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PCD Tool Grinding Technology

2020-12-24 09:50:47

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 bond 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.

 

 grinding wheel grinding wheel



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