Point diamond tool

We know that the single crystal diamond is very hard, very difficult process , a single crystal diamond tool in the design of the time to simplify as much as possible to its shape . In addition to General purpose blade  this characteristic of single crystal diamond , there are many other features , this is not introduced .
Single-crystal diamond tool designed to consider when main factors: ① precision parts to be processed ; ② actual processing conditions ; ③ diamond material properties.
Design single crystal diamond tool , you should follow the following principles: ① Because single-crystal diamond high hardness, processing difficulties, so the shape of the tool should be as simple as possible ; ② According to single-crystal diamond brittle, poor impact resistance characteristics , should be combined with the actual processing conditions , through the tool geometry are optimized to improve the impact resistance head ; ③ precision machined parts according to the requirements of the design wiper length , taking into account the ability of the tool to cut thin .
Below are several commonly used tool , for example, discusses the design of single-crystal diamond tool .
Turning your computer's hard substrate
Computer hard disk substrate is used for information storage, the material is aluminum or aluminum alloy , the surface diamond tool manufacturer  roughness of the substrate , the lower storage density, thus reducing the surface roughness of the processing is critical . The same time as the substrate thickness is less than 0.9mm, in order to prevent deformation , should minimize the cutting forces and extrusion processing .
Cutting hard substrate with good rigidity and stability using ultra-precision lathe disk . Cutting depth of about 0.01 ~ 0.02mm, the feed is about 0.5mm. Rigid disk substrate of single crystal diamond tools shown in Figure 1 the shape of the tip . Head has two main cutting edges , the processing can influence the infeed . Longer wiper ensures two directions machining wiper flank wear will not interfere with each other . Two master in the feed direction of the rake face downtilt 5 °, to obtain about 2.5 ° negative rake angle , the chips flow surface to be processed , in order to avoid scratching the 9 inch saw blade  chip surface has been processed . Very sharp diamond tools , edge radius is smaller than 100nm, 5 ° after the angle of the flank face has been sufficiently reduced to the machined surface of the extrusion and friction.
The key quality requirements of the tool blade and the tip is observed under the microscope at 500 times the defect . The design principle is equally applicable to other ultra-precision mirror surface processing tool .