diamond tools in China business development on Reflections

An industry, the industry's overall level of development ultimately depend on the level and growth of business. Of the diamond tool industry in order to achieve success from large to strong changes, the need for enterprise independent self-reliance, self-improvement, which will promote the  GUSHI concrete polishing pads development of the industry.
1. Clear corporate strategic positioning, enterprise synergies and improve the overall competitiveness of
Over the years, the domestic diamond tool business has experienced raw material prices, the export tax rebate rate, the RMB against the US dollar continues to appreciate, the world economy is slowing down, the domestic floods, earthquakes and other natural disasters and other adverse factors, to bring greater business all enterprises pressure.
How to enhance the competitiveness of enterprises to deal with complex business situation. First, enterprises should clear strategic positioning, according to their own reality, to develop viable development strategy, give full play to their strengths, to make their own fist specialty products. Avoid homogeneity, low-end, low-cost vicious competition. Secondly, we must play to the enterprise cluster synergies and improve the entire industry a competitive advantage, we must attach great importance to and give full play to the role of associations, give full play to association information platform, industry management and guidance, and guide enterprises in the industry gradually embarked orderly competition and healthy development track.
Around the tool industry, broaden and extend its product line, improve the product line; always adhere to the technical and management innovation; focus on the brand, sales channels and cultivate corporate  GUSHI concrete diamond blades culture construction, adhere to the balanced development of domestic and international marketing strategy , committed to continuing to build a business, fast growth and healthy development of international famous enterprises.
2. Strengthening scientific research and technology investment, improve the capability of independent innovation
Strengthen the independent innovation capacity to promote fundamental to long-term development, particularly in the context of economic globalization, growing international competition, lack of independent innovation ability will affect our survival and development of the diamond tool industry. At present China has built several national technical center, but so far, the diamond tool products companies in only a few provincial corporate research centers, and has more than 1,000 manufacturing enterprises, the annual income of nearly billion industry level is not commensurate. Therefore, China should realize the diamond tool industry from large to strong changes, you  GUSHI tct circular saw blades must also carry out all the work of independent innovation.
In recent years, some enterprises in independent innovation capacity-building to do some work in the technological development has also made some breakthroughs, but, objectively, in terms of research investment also studied the depth, product level, personnel structure, all there is a large shortage. Currently, companies are further increase investment in scientific research and technology, has "Enterprise Technology Center Project" included in the listing and financing projects to improve technology center hardware facilities, the construction set diamond tools, metal tools, power tools into one comprehensive state-level enterprise technical center.

In the selection of carbide saw blades which should be noted when

Contains tooth carbide saw blades, angle, number of teeth, blade thickness, blade diameter, carbide, etc. Most types of parameters that determine the processing capacity of the saw blade and cutting. When you select the correct selection of the blade to blade parameters based on need. Tooth, tooth commonly have flat teeth, Dou tooth, trapezoidal tooth, inverted  core bits for concrete trapezoidal tooth (Figure 1). Flat teeth the most widely used, mainly for ordinary wood sawing, this tooth is relatively simple, rough kerf, slotting process operating level during tooth formation can bottom. Dou teeth sawing kerf quality is better for cutting all kinds of wood-based panels, plywood. Trapezoidal tooth suitable sawing plywood, fire board, obtain higher cutting quality. Inverted trapezoidal tooth saw blade used in the bottom slot. Zigzag zigzag angle is in the cutting position. Serrated cutting angle affects the performance results. Greatest impact is on the cutting rake angle γ, the angle α, wedge angle β. Rake angle γ is serrated cutting edge angle, the greater the cutting rake angle more brisk, rake angle generally between 10-15 °.
After the angle is the angle between the machined  diamond polishing tools surface of the sawtooth between its role is to prevent the serrations machined friction surface, the smaller the angle the greater the friction, the more smooth the processing products. After the general value of carbide saw blade angle 15 °. Wedge angle is derived from the anterior horn and posterior horn out. But the wedge angle is not too small, it plays a role in keeping the teeth, according to strength, heat resistance, durability degrees. The rake angle γ, the angle α, the wedge angle β of the three equals 90 °. Jagged teeth, teeth more generally, the more the cutting edge per unit time, the better the cutting performance, but required more and more carbide cutting teeth number, the price of the blade is high, but too dense serrated , the chip between the teeth becomes smaller, the heat is easy to cause the blade; sawtooth excessive addition, when the feed amount of mismatch, then cut per tooth is small, the friction will increase with the workpiece edge, the life impact of  concrete diamond blades the blade . Typically tooth pitch 15-25mm, should be selected based on a reasonable number of teeth sawing material. The thickness of the blade from the saw blade in theory, we hope the thinner the better, is actually a kerf consumption. Materials and manufacturing processes carbide saw blade sawing board determines the thickness of the blade. To consider when selecting blade thickness from work and the stability of the blade sawing materials. Diameter and thickness of the blade used for cutting and sawing equipment related artifacts. Blade diameter is small, the cutting speed is relatively low; blade diameter saw blade and cutting equipment requirements will be higher, while cutting efficiency is high.

Diamond File mainly suitable for carbide

Diamond pen is a new wheel dressing tool, using powder metallurgy hot pressing process, the matrix alloy wear resistance, high strength, diamond alloy matrix is ​​firmly embedded, not falling, the diamond particles are arranged according to certain requirements in the alloy matrix, easy to use and do not need tough grind and back ...
2 diamond grinding wheel / diamond wheel cutter
Company specializing in the  concrete saw blades production of ceramics, resin, metal is bonded diamond or CBN grinding wheel, mainly used for carbide tools, ceramic materials, magnetic materials, PCD, PCBN cutting tools, funnels and grinding of ferrous and nonferrous metals processing . And according to customer ...
3 natural diamond dresser
Natural diamond dresser multi natural diamond particles sintered regularly arranged in the alloy matrix, and fixed to the cutter body. For fine grinding wheel dressing is an economical, practical and novel wheel dressing tool. It has the shape of round, square, etc., do not use ...
4 Diamond grinding / grinding
Electroplated diamond and CBN electroplated diamond and CBN grinding grinding for carbide, high carbon steel, bearing  circular blades steel miniature bearings, tools, and other precision parts machining holes of various shapes and a variety of special-shaped cavity molding grinding. And jade carving pondering other working ...
5 Diamond File
Diamond File mainly suitable for carbide, hardened steel trimming, cutting and filing and repair mode, also applies to the noble cutting and filing non-metallic materials, such as: silicon, crystal and other materials ......
6 diamond indenter
Diamond indenter are made of high-quality masonry drill bits  natural diamond processing, is a key fitting a variety of hardness. The company produces pressure head varieties, specifications, high precision, and long life, beautifully packaged.

conical wheel gear: wheel trimmed axial section of a toothed rack

 1 disc grinding machine: two twisted dish rack wheel is equivalent to two narrow tooth surface, the workpiece through the rounded plate and strip for the exhibition into activities, tasks Taiwan along the axial direction as to the workpiece his activities to grind the masonry blades   entire tooth width. Each finished grinding a tooth after the dividing head frame after dividing plate of teeth. This tool can also be applied additional installation grinding bevel. If using a grinding wheel into the internal gear, internal gear grinding can. This machine is a horizontal structure of ordinary, when machining diameters greater than 1 m vertical structure with an accuracy of up to four, together for grinding precision gears.
2 conical wheel gear: wheel trimmed axial section of a toothed rack, and a straight line along the tooth to come and activities. Workpiece through the worm gear, screw and communication gear and developed into a complete indexing activities, but also effective rounded plate and strip for developed into activity, the application of worm or indexing plate for indexing activities. Wheel rack rotated by an angle helix angle of  dry cut blades the workpiece when grinding helical gear. This machine adjustment convenience, versatility, and fit for single batch production, wider use.
3 worm wheel gear: truth and hobbing similar, large-diameter wheel as a single head worm shape, of a turn each wheel, the workpiece is rotated one tooth, and its transmission ratio accurately, some with mechanical transmission, some with synchronous motor idea identify drivers, some with raster and servo motor. For grinding the workpiece axially feeding activities in order to grind the entire tooth surface. Diamond tools for grinding wheel turning or rolling roll into worm-shaped. Machine tools for the vertical structure, the continuation of indexing, high grinding efficiency, co-processed for batch production medium modulus gear on gear teeth and more particularly  circular blades suitable, accuracy up to four.
4 large flat grinding machine: the wheel of a task plane is equivalent to a rack tooth surface, with involute master develop into activities occurred. Grinding wheel and the workpiece is not longing for the workpiece axis complex activities, grind the side of the tooth surface after the application of sub-dividing plate teeth (The company specializes in producing aluminum cutting machine), sequentially grind all tooth surfaces. Then turn around the workpiece, and then grind the other side of the tooth surface. Machine is a horizontal structure, simple structure, function the same, accuracy up to 3, first and foremost for grinding shaper cutters, shaving cutters and metering measuring gear.

Diamond tools for processing stone products, the impact of the main reasons

Stone processing mainly sawing, cutting , grinding, polishing . Means workability stone sawing, cutting , grinding, polishing and ease of processing .
Sawing, cutting the same , grinding, polishing , although different, but very similar. So the general workability dry core drill bits  usually refers to the stone can be cut and grindability . Affect the stone processing are the main factors :
( A ) Hardness
Generally , the greater the hardness of the stone , the more difficult the process , the greater the wear of the tool .
( 2 ) Mineral and chemical composition
The material components stone material components include mineral composition and chemical composition , different minerals and chemical composition , processing is different. Such as marble rock-forming minerals are calcite , dolomite , and its Mohs hardness is 3 and 3.5-4 , respectively , compared with granite low hardness, ease of processing . Granite is glass blades  the main rock-forming minerals quartz, orthoclase , plagioclase , and their Mohs hardness of 6.5-7 . Its workability depends largely on the content of quartz and feldspar , the higher the content , the granite blades  more difficult process . In the chemical composition , such as the higher SiO2 content , processing more difficult .
( 3 ) the structure of the rock structure
In general , uniform particles than the uneven stone easy processing , high quality polishing ratio tabular fine , dense stone gloss than the loose stone . Mineral good crystallinity and orientation , the optical axis direction will greatly enhance the gloss after polishing . Rock cleavage, grain boundary and initial crack on the workability is also very important factors.

Widely used for diamond tools

1 . The correct selection of varieties and grades blade blades of different varieties , because of its different components , cutting a big difference , and selection need to be careful. Currently carbide blade did not have a unified international classification , each has its own production plant varieties and grades should be used with reference to the manufacturers product samples to choose. Particle size can be divided  diamond saw blade  into three categories: the coarse grain ( average grain size of 20 ~ 50μm), the grains (10 ~ 20μm) and fine grain (2 ~ 10μm). The larger the grain size , the better the abrasion resistance , tool life , the higher the edge of poor quality, precision tool is made difficult . Instead, fine-grained tool cutting edge edge quality is good, good surface quality . Thus , the current grain polycrystalline continue to refine and already 1μm, 0.5μm or less even fine grain , to be based roughing and finishing processes , such as different requirements , use of different grain sizes . But our studies indicated that , in poly- crystal micro- cutting tool , it has a " multi-point cutting , forming  diamomd core drill bits a single point " feature, so long as the process to take certain measures , with coarse grains (70 ~ 30μm) polycrystalline tool also precision machining surplus can cut surfaces.
(2) select the appropriate cutting in recent years , with the occasion of the new materials, new technologies, new processes, new equipment innovations continue to emerge , such as superfine pre- alloy powder , laser processing , vacuum brazing technology , diamond plating technology, diamond uniform technology and other cutting-edge new technology, being highly Edge 2000 Pads  concerned with the key R & D , R & D results also gradually industrialized. As these research achievements in industry , diamond tool performance on continuous improvement , functionality continues to expand, currently has gradually extended its scope of application to the semiconductor , aerospace, information and many other fields, for diamond tools manufacturing enterprises to provide high profits and huge development space

Diamond saw blades range of applications

(A) the processing of non-ferrous materials difficult to machine
Processing of copper, zinc, aluminum and other nonferrous metals and

alloys, the material easy to adhere to the tool, processing

difficulties. Using diamond low coefficient of friction, and non-ferrous

metal affinity characteristics of  concrete ring saw small, diamond tool and the tool can

effectively prevent the occurrence of metal bonding. Further, the

elastic modulus of the diamond cutting edge portion is deformed when

small, the cutting non-ferrous metal extrusion deformation is small, the

cutting process can complete the small deformation, which can improve

the surface quality.
(2) the processing of non-metallic materials difficult to machine
Processing particle contains a lot of high hardness non-metallic

materials difficult to machine, such as glass fiber reinforced plastic,

filled silicone material, hard carbon fiber / epoxy composites, the

material of the hard particles so that diamond bandsaw blades  the tool wear serious, hard

carbide cutting tools processing, and diamond tools, high hardness, wear

resistance, and therefore processing efficiency.
(3) ultra-precision machining
With the advent of modern integrated technology, precision machining

direction to the development of the tool performance made some very high

demand. Because diamond friction coefficient, low coefficient of thermal

expansion, high thermal conductivity, can diamond tool manufacturer  cut very thin chips, chip

easily outflow affinity with other substances is small, easy to BUE,

heat a small, high thermal conductivity, heat can be avoided of a blade

and the workpiece, so the passivation edge, cutting deformation, the

surface of higher quality can be obtained.

Description of the advantages of diamond grinding wheel

 Diamond is the world have the hardest known material material , compared with the other abrasives , microhardness , respectively , boron carbide, silicon carbide and corundum double, triple and quadruple , so its grinding performance than several other abrasives is much higher. And its thermal conductivity is relatively high, sharp blade grinding , grinding ability, less diamond blade saws  congestion , better machined surface roughness , scratches and grinding burn and so small, but its deficiencies are prone to iron group elements react . Diamond grinding wheels and the products are mainly used in the manufacture of iron group metals
In order to place a variety of difficult circular blades to machine materials, such as stone, glass , cement products , refractories , ceramics, wood and carbide , silicon alloys and non-ferrous metal brittle ( casting ) and so on. Several physical properties of the abrasive :
As can be seen , compared with ordinary abrasives , diamond grinding wheel has the following excellent properties :
1 ) abrasive strength , high hardness , abrasive durability .
 2 ) high thermal conductivity, low grinding temperature .
3 ) thermal expansion drum wheels coefficient is small, long service life.
As shown by the excellent diamond can win , it is widely used in cutting , grinding, grinding its industry and sawing, drilling and other tools industries. Diamond products including diamond tools and diamond abrasive.
Diamond wheels are widely used in cemented carbide, cermet , cast iron , ceramics , stones, stone, ferrite, concrete, refractory materials, fiber reinforced plastics and many other materials, grinding, its scope and the amount is increasing . The varieties are wheel, Whetstone , grinding piece , street wear strips.

Alloy Saw Industry Analysis narrative

An alloy saw blade when grinding many factors can not be ignored
1, the matrix deformation, inconsistent thickness, bore tolerances big. Congenital defects of the base there is a problem, no matter the kind of graphics device, there is grinding errors. Matrix deformation on the two side angle bias; matrix inconsistent thickness right rear corner and edge front corner of bias, such as the existence of cumulative tolerance is too large, the quality and accuracy of the blade severely affected.
2, grinding teeth grinding effect on the core bits for concrete  structure. Alloy saw blade grinding machine structure and assembly is good or bad, about two types of models currently on the market: one is floating in Germany Seoul ink types. The type with vertical grinding off, all the advantages of hydraulic stepless movement, all of the feed system using V-shaped guide rail and ball screw work, grinding or big arm with slow feed forward, rewind retraction, Clips cylinder regulator heart, flexible and reliable support piece, pulling teeth accurate positioning, strong self-centering blade positioning heart, arbitrary angle adjustment, cooling flush reasonable, man-machine interface, high precision grinding off, pure grinder rational design; Type II, which is currently Horizontal such as Taiwan and Japan models, the presence of mechanical transmission gears and mechanical clearance dovetail slide accuracy, stable performance low clip, branched tablet core adjustment difficult, pulling teeth institution or poor reliability, flat two sides, left and right rear corner is not a heart-mill cut, resulting in large deviation angle difficult to control, mechanical wear disaster ensure accuracy.
3, welding factor. Welding alloys deviation and impact grinding precision, resulting in a large pressure while grinding, while pressure is small, the posterior horn of the same generation of the above factors, welding angle difference, human unavoidable factors, all of the grinding wheel and other factors generates unavoidable impact.
4, wheel width affect the quality and  cbn grinding wheel size. Optional wheel running gold films, note wheel size, granularity is too coarse grinding wheel produced traces wheel easy to plug the optional fine granularity grinding less easy to burn knife. Grinding wheel diameter and length width thickness is based alloy and alloy tooth width or different each face the situation, not a corner after corner or front wheel specifications are the same as any different from tooth grinding, must be targeted to choose a suitable Specifications Wheel.
5, grinding feed speed. Alloy saw blade grinding entirely good or bad decision grinding feed rate, generally alloy saw blade feed rate at from 0.5 to 6 mm / s can not exceed this value should be 20 per minute teeth, the ultra in every minute 20 tooth feed rate is too large, it will have serious knife tumors or burning alloy wheel impact generated convex and concave surface precision grinding wheel wasted.
6, grinding feed rate, the choice of wheel size on the amount of feed has an extremely important significance. General grinding wheel recommendation to use 180 # 240 # 240 # to use at most an opt 280 # 280 # to 320 #, or to adjust the feed rate.
7, grinding heart. All grinding the blade and the substrate for the heart, rather than with the blade of the heart, get it out of the heart surface grinding, horn, front corner with a machining center can not be sharpened a saw blade, saw blade grinding three processes Heart not be ignored. Side angle grinding alloy thickness is still careful observation, the thickness of different grinding heart changed, regardless of the thickness of the  granite polishing pads alloy to, the grinding surface grinding wheel center line of the welding position to be maintained in a straight line, or have a poor impact angle cutting.
8, pulling teeth institutions can not be ignored. Regardless of how the structure of any grinding, pulling teeth designed to coordinate accuracy sharpening design quality, machine adjustment pulling teeth acupressure reasonable position in the tooth surface, and not with the move is extremely critical, back teeth when pulling t

Grinding wheel is the most important one class of abrasive.

 Grinding wheel is the most important one class of abrasive. Added to the abrasive wheel is binding agent, the green compacts, drying and calcining a porous body made. As abrasives, binders and  tuck point blades manufacturing process is different, the wheel characteristics vary greatly, so the grinding machining quality, productivity and economy have a significant impact. Mainly by the grinding wheel abrasive characteristics, the intensity, binders, hardness, structure, shape and size and other factors. Wheel variety.
Can be divided according to the  polishing pads for granite ordinary abrasives abrasives (corundum and silicon carbide, etc.) and natural abrasive grinding wheels and superabrasive (diamond and cubic boron nitride) grinding wheel;
Shape can be divided according to level grinding wheels, bevel wheel, cylindrical grinding wheels, cup wheels, disc wheel, etc.; binding agents can be classified according to the ceramic grinding wheel, resin grinding wheel, rubber wheel, metal grinding wheel. The wheel parameters are abrasive, viscosity, hardness, binders, shape, size and so on.
Since wheel usually work at high wood saw blades  speed, thus turning test should be carried out before use (guaranteed wheel at the maximum operating speed, not break) and static balance test (to prevent machine vibrations caused by the work). Grindstone at work for some time, should be trimmed to restore grinding performance and correct geometry.

diamond in stone processing to the application

To further improve productivity, various studies have focused on improving the economics of stone processing technology, in addition to improving output and reducing material waste costs, diamond  wood drill bits manufacturers, machine manufacturers and machine tool manufacturers to increase production capacity and tools match for a lot of research. Where a study to find out the current production capacity of marble processing machine level achieved. Europe is currently the most efficient use of the production of granite sawing marble processing efficiency levels achieved only equivalent to the level of about 4. Generally speaking, when after more than 25mm depth of cut for the processing of granite is unlikely, because this would lead to a lot of heat and diamond tools overload.
Manufacturer of diamond, diamond tool manufacturers, machine manufacturers, blade manufacturers and a matrix consisting of the European Institute of partner international organizations, began to study to bring a new world of stone processing program. Focus on seeking solutions to the problem, as well as technical, economic and environmental evaluation, as well as approaching the problem. Goal of this program is to develop each subsystem processing systems, so as to meet the needs of deep under the conditions that the depth of cut range from 100 ~ 300mm. It includes a highly efficient diamond saw blades, as well as tool and workpiece interface provides improved lubrication system to ensure long stable work. Because this is a highly automated process is a basic requirement. Research work of two phases:
1, laboratory tests, in order to get some basic information (material properties, cutting force, temperature and vibration), as a  concrete ring saw machine and tool design should achieve basic data must be improved.
2, in the first stage on the basis of data tools and machine parts (blade caking, lubrication and trimming system) development. In the first phase, the project is one of the key design simulation using a small blade in order to investigate the processing power of the tool and the workpiece at the interface (grinding zone) temperature, and vibration characteristics. When using a small blade, the system characteristics and actual conditions of use in industrial applications characteristics must match, and this is crucial. To meet this requirement, many authors have proposed a variety of cutting model, the system has two main variables been recognized, namely cutting speed (Vc) and depth of cut (ae). Using these parameters and geometry information about tools, we can propose a saw blade when cutting a simplified model formula.
Using this formula for industrial applications can be reproduced under normal conditions similar to the conditions and forces.
Deep cutting conditions and the cutting force of the cutting temperature measurements.
Laboratory tests implemented with a small cutting depth so as to measure the heat generated in the cutting zone, and cutting forces. This information is for the determination of large-scale production saw lubrication equipment and diamond tools for forecasting may be exposed in the process of cutting force is necessary. Use of high-strength diamond particle size of 30/40, the number of particles per carat is 660 ± 30 tablets. First, the medium hardness Italian sawing granite, followed cutting the  tile cutting blades harder the Indian Red granite processing, which is one of the most difficult materials cut. In cutting tests, cutting depth remains 90mm, adjust the feeding speed to make it in the mildest cutting conditions 100cm2/min and among the harshest conditions 600cm2/min changed. This condition can be set to meet the industrial production of 380cm2/min to 1000cm2/min production efficiency. Temperature measurement results obtained. As expected, with the cutting efficiency of the cutting temperature is rising generation, but even at the highest speeds, the resulting cutting temperature remains below 200 ℃. Machining dynamometer using the normal force and tangential force to the saw tool design and maximum size to help development of specifications. Diamond cutting force analysis and examination of the wear process is to determine the scope of the process within that period should be working on. This is to maintain uniform diamond wear and adjustment of the cutting diamond material required to complete exposure of the height of the key.

diamond blade innovation and transformation Discussion

Make diamond segment in this industry for a long time, so now of what the diamond blade innovation and transformation. I personally think that diamond segments and industries associated with this diamond tool manufacturer  particular the rapid development in recent years, momentum and full of various manufacturers are vying to launch their new products.Said that the current good momentum of development, but as a vendor should have sense of urgency. Restructuring and adjustment measures is particularly important. But also for the industry to do more of the abyss development and lay a solid foundation.Cutting tool material has been entered in the development of the  cutting wheels times represnted by cemented carbide and high speed steel, carbide has better performance and higher cutting efficiency, which, together with the hard material, is to achieve efficient processing of modern cutting technology an important guarantee. At present, the proportion of carbide cutting tools up to 40%, far below the level of industrialized countries, has seriously hampered our tool to improve the overall level of product. Not a good tool material, any innovation and cutting tool technology advances are lack of necessary physical infrastructure. From the fundamental solution to this circular blades  problem will involve the adjustment of industrial structure, accelerate research and development with a capacity of carbide materials and tool production base building process, the rapid increase in carbide cutting tools in the proportion of all tools.

blade cutting what knowledge needs to pay attention to

1, idle: in particular, the first use of a new base, the need to idle for about 30 minutes, the summer hot season needs to bring water idling, which aims to further eliminate welding head when matrix effects and enhanced blade rotating at high speed state to maintain the  masonry drill bits intrinsic quality of memory.
2, blocks of not less than 0.5m3, and placed securely, the bottom should be well-wood pad, plug SUCOOT prison, blocks should be located in symmetrical positions workbench, workbench cars and blocks to ensure the stability, without shaking , shaking phenomenon.
3, according to the blocks of length, width, height adjusting limit switch, the blade lift and skip the trip in a reliable and effective range. Saw blade should leave before sawing blocks up to 10 ~ 20mm. After sawing, saw cut should be left away from the blocks at the bottom of 20-40mm, knife blade to go about running, you should exit all blocks Jukou the blade from not less than 150-200mm, to prevent the blade hit Shortage material.
4, the blade idling stable only after a trial cut blocks are not allowed contact with the blade starts cutting edge blade, cutting blade rotation are not allowed to stop, to withdraw Jukou before stalling.
5, cutting blocks are shaking if found should immediately stop cutting the blocks to be firmly fixed before it can continue working, cutting, are not allowed to move in any blocks.
6, the cutting blade and found a  diamond discs significant slowdown or even clip knife phenomenon, it may be belt slippage, compression nut loose or too large depth of cut, the cutting speed is too fast and other reasons, should be timely adjusted.
7, the line speed should be processed stone hardness and wear resistance to adapt, line speed table are recommended cutting different types of stone. Tip: line speed is not high, an increase in cutting efficiency, will reduce the life of the blade. 8, feed rate, depending on the processing of the material properties of each material when the cutting depth must have a certain range of the feed rate, if the speed is too high, will accelerate the wear of diamond or even fall off, causing the blade consumption too fast, if the speed is too low, then they will make the process of self-sharpening blades can not be normal, so "blunt, skid" lost cutting capacity. Under normal circumstances, the feed speed is slower when cutting, sawing should be in uniform for the common typical materials, when the cutting depth is 20mm, recommend the following feed rate table for your reference, when the thickness changes, the cutting speed can be Press the cutting area (cm2/min) to conversion. Tip: The first feed or each piece of board should be reduced by half for the first three walks.
9, the cutting depth for medium hard stone such as marble, limestone cut through at once, for hard stone and abrasive such as large granite, sandstone should step cutting, saw cutting granite monolithic, eating knife depth is generally 10-20mm , depth of cut marble cutting 50-100mm, more than double-sided cutting hard granite, depth of cut of each 3-5mm, should be based on the hardness of the stone, using a saw blade and the fixed performance, efficiency recommend the following table for your reference. Common materials cutting efficiency table Note: "1" indicates low power finishing; "2" indicates a high power roughing.
10, the blade rotation direction of the ring saw blades  same stone as the feed direction along the cutting, contrary to reverse cutting, and reverse cutting, due to an upward vertical force component, in the form of stone off potential, therefore, is a solid stone, under the same conditions Next, you should try using smooth cutting. When using reverse cutting, cutting depth to be reduced, generally reduced to shun cutting 1/3-1/2.
11 In summary, the basic requirements for selection cutting process are: low hardness, good stone cutting performance can be deeply walking, brisk walking contrary shallow cut, ie corresponding to the same stone and saw and saw blade should be cutting efficiency, cutting board, good quality, long life blade and matrix process parameters prevail, the four complementary and mutually dependent, must not generalize. For example, when the saw blade cutting speed can not be maintained, indicating a blunt blade, cutting depth should be reduced while increasing the cutting speed to sharpening blades.

saw blade with precautions

1, must be carefully read before using manual cutting machine and packaging items mentioned on the cover.
2, according to the wet diamond polishing pads  choice of materials to be cut blade varieties, and check blades for cracks, distortions, lost teeth, do not use if damaged blade.
3, be sure to use a good cutter blade casing mounted guard, and wear face masks or protective eye.
4, the blade cutting machine please check before installation whether spindle runout, when the blade mounting flange and nut set with tight after installation and people must be the center hole of the blade is firmly fixed on the flange, according to Taiwan, a gasket must be good washer buying gently pushed manually rotating blade confirm whether the eccentric shaking.
5, after installing alloy saw before use preroll one minute, until the machine into operation only when the cutting operation.
6, the non-automatic cutting operation, you must gently normal operation of the saw blade enters the  circular saw  material, Forced hard pushed hard prohibited. And to prohibit reverse prohibit suddenly saw parked in the middle of the cut material, or cause jagged off, saw body deformation, prone to danger.
7, the use of abnormal sound heard and saw abnormal shaking or section does not usually stop the job and find the reason for the exception, the dry cut blades  timely replacement blades.
8, after cutting please wipe rust oil to prevent blade rust due to long periods of use.
9, insert the blade perpendicular to the tool holder to hang in a dry, avoid wet areas. Do not place the blade flat on the ground, otherwise easily lead to blade deformation. Do not directly stacked multi-chip saw blade shall be spaced packaging to avoid jagged collision should gently.
10, when the blade is not sharp serrated grinding again, not easy to damage teeth grinding time original angle affect cutting accuracy and shorten the life of saw blade.

Drills introduce common

Configuration which substantially radial cutting edge portion having at least two main cutting edge portion, and arranged in the circumferential direction of said main cutting edge portion and between the main cutting edge portion, at least two sub cutting blade portion said main cutting edge portion includes a main cutting edge as the cutting blade, the cutting blade inner end of the main center of rotation, the outer end of the cutting edge portion in the outer periphery of the rotation locus.
A cutting edge portion of the Diamond tools  sub cutting blade as the sub cutting blade, the sub cutting blade inner end is located off the center of rotation to the outer side of the site, the outer end is located in the rotating cutting blade portion deviated from the center of rotation locus of the outer edge position.
A drill, with a drill tip disposed on the plurality of cutting blade portion, and provided on the base end side of the cutting blade portion and the base end portion of the shank portion is formed with a shaft-shaped drill main body;
Said cutting blade portion has a flank of the cutting surface and the engagement surface protruding toward the front end edge of the cutting edge formed by said center of rotation of the cutting blade from the drill side arranged substantially radially outer side;
The rotary axis of the direction of movement and the operation of the impact operation of cutting the composite, characterized in that said cutting blade portion has at least two main cutting edge portion, and disposed in the circumferential direction of the main cutting edge portion and the main cutting between the blade, at least two sub cutting blade portion;
The main cutting edge portion having a cutting edge as a main cutting edge, an inner end of said main cutting edge is located in the center of rotation, the outer end of the cutting edge portion in the outer periphery of the rotation locus, the sub cutting blade portion having as its the sub cutting blade cutting edge, the secondary cutting blade inner end is located radially outwardly from the rotation center deviate from the site, the outer end portion in the rotation from the cutting edge to the center of rotation locus of the outer side of the deviated position.
PDC bits
PDC bits [1] for short. Is commonly used in the oil drilling industry as a drilling tool.
PDC continuous improvement of product performance
In the past few years, PDC cutter quality and type have undergone tremendous changes. If the teeth of the 1980s to today's teeth for comparison, the difference is quite large. Because hybrid technology and manufacturing process changes, today's cutting teeth is much better quality and performance, so that the anti-erosion and impact drill capabilities are greatly improved.
Engineers also tungsten carbide substrate and the interface between the diamond has been optimized to improve the toughness of the cutting teeth. Process innovations in the diamond layer is also used to improve the abrasion resistance and thermal stability.
In addition to material and  drum wheels manufacturing process developments outside, PDC products in the tooth tooth design techniques and fabric also achieved a major breakthrough. Now, PDC products have been used previously can not be applied in areas such as stiffer, stronger and changing abrasive formations. This extension to new areas, the diamond (fixed cutter) cone drill bit and the balance between a great impact.
Initially, PDC drill bit can only be used for soft shale formations, the reason is hard mezzanine will damage the drill bit. However, due to the emergence of new technologies and changes in the structure, the current PDC drill bit for drilling hard interlayer has been able to and a long section of the hard rock formations. PDC bits are increasingly being used by people, especially with the continuous improvement of quality PDC teeth, in which case more and more prominent.
Since teeth bit design and improvement, PDC drill bit orientability also will increase, which further weakened the past in motor drilling cone bit advantage. Currently, PDC drill every day in many applications where the drilling supplant cone drill bit market.
Commonly used mechanical drills, twist drills with straight shank (ordinary type), you can drill: 45 # steel, stainless steel, diamond hardness using the weak point of the material. Alloy drill, you can drill Cr12 steel, the use of diamond hardness strong material. Use drill expertise can allow himself to lower profits.
PCB Drill Type
PCB drill drill drill control Type: PCB drilling with a drill with straight shank twist drill, fixed and fixed shank twist drill shank Spade (undercut) drill bit. Straight shank twist drill mostly for single head machines, PCB drilling relatively simple or single panel, now in a large circuit board manufacturing plant has been rarely seen in its drilling depth of up to 10 times the diameter of the drill. Laminated on the substrate is not high, the use of drill bit holder to avoid bias.
At present, most manufacturers use CNC drilling machine, CNC drilling using a carbide shank drill set, which is characterized to achieve automatic replacement drill. High positioning accuracy without the use of drill sets. Large helix angle, chip speed, suitable for high-speed cutting. In the range of the flute length, diameter of the drill is an inverted cone, when drilling with the hole wall friction is small, high quality drilling. Common drill shank diameter of 3.00mm and 3.175mm.
Drill material
PCB drilling with carbide drill bit is generally used as the epoxy glass cloth complex copper plate on the tool wear particularly fast. The so-called carbide drill gold is tungsten carbide powder as matrix, cobalt powder as a binder by pressurized sintering. Generally contain 94% tungsten carbide, 6% cobalt. Because of its high hardness, very wearable, a certain strength, suitable for high-speed cutting. But the toughness is poor, very brittle, in order to improve the performance of cemented carbide, and some use carbide substrate in a chemical vapor deposition on a 5-7 micron layer of special hard titanium carbide (TIC) or titanium nitride (TIN), to has a higher hardness. Some use ion implantation technology, titanium, nitrogen, and carbon injection the matrix certain depth, not only improves the hardness and strength and regrinding the drill can move into when they injected ingredients. There is a physical method to generate the bit at the top of a layer of diamond film, which greatly improves the hardness and wear resistance of the drill. Carbide hardness and strength, not only the ratio of cobalt and tungsten carbide, but also with the powder particles about. Carbide drill ultra fine particles, and its average grain size of tungsten carbide with 1 micron or less. This bit is not only high hardness and compressive strength and flexural strength are diamond bandsaw blades  improved. To save costs Many drill shank welded structure, the original as a whole are carbide drill, drill shank back now made of stainless, but significantly reduced the cost of the material due to different concentricity less than its dynamic rigid whole alloy drill, particularly in the small diameter side.
The use of drill
1, the drill should be packed in special packing boxes, to avoid vibrations collide.
2, when used, from packing boxes should immediately remove the drill bit attached to the spindle collet header or automatic replacement drill tool library. Spent immediately put back packing boxes.
3, use the drill diameter measurement tool microscope and other non-contact measurement equipment, to avoid the cutting edge in contact with the mechanical gauge was bruised.
4, some CNC drilling machine CNC drilling using some positioning ring retaining ring is not used, such as the use of its positioning ring installation depth positioning must be accurate, as it does not use retaining ring fitted to the drill spindle elongation to adjust consistent, multi-spindle drilling machine to pay attention to this point, to make each spindle drilling depth to be consistent. If not possible to make drill drill drill through the surface or not caused by circuit board scrap.
5, using 40 times the usual three-dimensional microscopy drill blade wear.
6, the spindle and to always check the concentricity of the collet and the collet chuck clamping force, will result in poor concentricity of small diameter drill bit off and pore size, etc., the clamping force will cause the actual speed is not good Set speed does not match between the chuck and the drill bit slipping.
7, fixed shank drill head clamping collet drill shank length of 4 to 5 times the diameter to clamp securely.
8, should always check the spindle presser foot. Presser foot contact surface perpendicular to the spindle is horizontal and not shaking, to prevent drilling off the drill and produce partial holes.
9, drilling better than vacuuming, vacuum air temperature can be reduced drill, colleagues away dust reduce friction generates heat.
10, the substrate stack comprises upper and lower plate to drill a hole workbench trough positioning system to locate a prison, lie flat. Use adhesive tape to prevent the drill bit to be on the tape so that a drill swarf adhesion, causing difficulties and chip off the diamond.
11, ordering manufacturers drill, the factory inspection when sampling the compliance of its 4%. And 100% of 10 to 15 times with a microscopic examination of the gaps, scratches and cracks.
12, drill timely re-grinding, increase the use and re-drill grinding times, extending bit life, reduce production costs and expenses. Microscope usually measured length of the two main cutting edges, the wear depth should be less than 0.2mm. Regrinding when rubbed 0.25mm. Plain shank drill can be reground three times, shovel-shaped head (undercut) of the drill can be reground two times. Excessive turning grinding quality and accuracy of its drilling will decline, will cause the finished circuit board scrap. Excessive turning mill backfired.
13, when the wear due to abrasion and diameter reduction of 2% compared to the original, then the bit scrapped.
14 bit parameter settings in general, manufacturers have to provide a drill bit plant production speed and lower speed parameter table, the parameter is a reference only, the actual craft workers through actual use but also draw a line with The actual speed and the speed of the drill parameters are usually the reference parameter actual parameters are different but the difference is not too much.
The concept of drill
Bit is used to drill out the solid material through holes or blind holes, and is able to have a hole reaming tools. Twist drills are commonly used, flat drill, center drill, deep hole drilling and core drill. Reamers and countersinks although not drill holes in solid material, but will also be used to drill them into a class.

The characteristics of the diamond

(1) The brightness of the green concrete blades  optical identification (Brilliance) because of the diamond has a very high reflectivity of the reflection critical angle is small, a wide range of total reflection, total reflection light is easily reflected light is large, resulting in high brightness.
(2) Flashing (Scintillation) is flashing diamond flash, that is, when the diamond or the light source, the  General purpose blade observer moves relative to the surface of the white light reflection and flash. Colorless, transparent, well-crystallized poly octahedral shaped diamond surface bodies or, if not Gache grinding can expose good flashing light.
(3) the dispersion or the fire (Dispersion or fire) planes of diamond pen as diverse as prism, can through refraction, reflection and total reflection into the interior of the  grinding cup wheel crystal composition of white light into white color - red, orange, yellow, green , blue, indigo, violet shade.
(4) Gloss (Luster) outstanding diamond-like hard, smooth and bright crystal face or cleavage face in white light reflection effect particularly strong, and this is very characteristic of the role of reflective called adamantine luster, make diamond tools also very good.

alloy blades

(2) The equipment shall be equipped with safety devices, such as: protective cover, power brakes, overload protection.
3 There are professional operators to sds drill bits   install and use, and wear work clothes, wearing goggles, earmuffs and so on.
4 operator can not wear gloves, long hair work to be placed inside the cap, and pay attention to ties and cuff, to avoid any danger.
5 away from the fire source and humid environments.
Installation Requirements
1, the equipment in good condition, spindle no distortion, no track jump, fixed solid, no vibration.
2, check the blade for damage, tooth is complete, sawn board is flat and smooth, and the presence of other anomalies, in order to ensure safe use.
3, the assembly, make sure the blade spindle rotation direction of the arrow with the device in the same direction.
4, the blade installed to keep the axis of the  circular saw  chuck and clean flange, flange diameter of the blade diameter, ensuring that the blade flange closely integrated, installed dowel pins, tighten the nut. Flange size should be appropriate, outside diameter shall be not less than the blade diameter of 1/3.
5, the device before starting, to ensure safety in the case, a single person to operate the equipment, jog idling, check the device rotation is correct, with or without vibration, blade installed idling after the first few minutes, without slipping, swing or normal after beating work.
Requirements
1, work, work should ensure that fixed profile positioning in line to eat cutting direction to avoid abnormal cut, do not exert side pressure or curve cutting, feed to a smooth, avoid contact with the stone drill bits  workpiece edge impact resistance, resulting in damage to the blade, or workpiece flying out of an accident.
2, the work, and found abnormal sound and vibration, cutting surface roughness, or odor, you must immediately terminate the job, timely inspection, troubleshooting to avoid accidents.
3, at the beginning and stop cutting cutting, do not feed too fast to avoid broken teeth and damaged.
4, if the cutting aluminum or other metal, to use special cooling and lubrication fluid, to prevent overheating of the blade, resulting in tooth paste, and other damage, affecting the cutting quality.
5, flutes and suction equipment to ensure smooth flow of slag device to prevent slag accumulation into blocks, affecting production and safety.
6, dry cutting, do not long continuous cutting, so as not to affect the life of the blade and the cutting effect; wet sheet cutting, water jet cutting should be added, to guard against leakage.