The key to the quality of pcd tool‘s edge in the choice of vitrified bond diamond grinding wheel particle size. The fin grit can processing fine cutting edge chipping but with the lower the grinding efficiency. So the PCD cutting tool sharpening process can be divided into three processing stages: coarse, fine, and super fine according to the accuracy, application, or failure degree of the cutting edge of the tool.
1. According to the accuracy and purpose of the cutting edge
|
No |
Cutting Edge Precision |
Grit |
Purpose |
|
A. Coarse |
0.05mm |
230/270#~320/400# |
Rough machining |
|
B. semi-finishing |
0.02mm |
M20~M40 |
semi-finishing |
|
C. finishing |
0.005mm |
M5~M10 |
finishing |
2.According to the degree of blade failure (re-grinding tools)
|
No |
Cutting Edge Precision |
Grit |
Purpose |
|
A. Coarse |
cutting blade damage 0.5mm |
230/270#~320/400# |
or electrical machining |
|
B. semi-finishing |
cutting edge collapse 0.3mm |
M20~M40 |
|
|
C. finishing |
cutting edge wear 0.1mm |
M5~M10 |
|
In order to ensure the quality of the cutting edge and improve the grinding efficiency, the clearance angle can be divided into large relief angle and small relief angle.
Use coarse-grit grinding wheel to first grind the large relief angle because the contact surface has a large grinding force and the grinding efficiency is high; then use fine-grit grinding wheel to sharpen the small relief angle and control the width of the small relief angle to about 0.1~0.3mm , Good quality of small sharpening of contact surface.
PDC cutters are widely used for gas,oli drilling,coal minning etc.Grinding procession will directly influence the quality od PCD cutter.Moresuperhard provide diamond grinding wheel for grinding different parts of pdc cutter like surface grinding,external grinding wheel ,double-sided grinding disc and centerless grinding wheel.
In the grinding industry, ceramic diamond double-end grinding discs have attracted much attention for their high efficiency and high precision. In order to help newcomers quickly master the core knowledge in this field, Moresuperhard specially invited Jim, a sales expert in double-end grinding discs, to conduct a systematic training. From basic concepts to practical applications, this training content is full of practical content. Of course, in order to test the learning results, Jim assigned homework to everyone. The students' answers are all very good, which are summarized as follows for everyone to learn and refer to.
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