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PCD Tool Grinding Technology

2020-12-24

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.

vitrified diamond grinding wheel

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.

vitrified diamond grinding wheel vitrified diamond grinding wheel