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.
During the production process of ceramic diamond grinding wheels, raw materials such as diamonds and binders need to strictly control humidity and temperature. Excessive humidity may cause raw materials to absorb moisture, affecting the bonding strength and hardness of the grinding wheel; while excessive temperature may cause volatilization or unstable quality of certain materials, thus affecting the overall performance of the grinding wheel.
Single crystal diamond cutting tools are high-performance tools made from single crystal diamond, known for their exceptional hardness, wear resistance, and thermal conductivity.Effective grinding methods include using diamond grinding wheels, laser grinding, and mechanical grinding with cast iron or steel discs, each with its own advantages and requirements. Moresuperhard offers various solutions and consumables for grinding single crystal diamond tools, ensuring efficient production and high-quality results.
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