One of the purposes of cutting tool sharpening is to obtain cost-effective cutting edge quality, and the key to quality is the choice of the size of the sharpening wheel.
The finer the grinding wheel particle size, the smaller the cutting edge chipping, and the lower the grinding efficiency. For this reason, the PCD cutting tool sharpening process can be divided into three processing stages: coarse, fine, and fine according to the accuracy of the cutting edge of the tool, its purpose (see Table 1) or its failure degree (see Table 2). Formulating a reasonable sharpening process according to specific conditions can greatly improve processing efficiency.
Serial number | Cutting edge accuracy | Grain size | Application |
A (rough) | 0.05mm | 230/270#~320/400# | Rough grinding |
B (medium) | 0.02mm | M20~M40 | Medium grinding |
C (finish) | 0.005mm | M5~M10 | Finish grinding |
Table1 Classified by cutting edge accuracy and usage
Serial number | Degree of failure | Grain size | Remarks |
A (rough) | Broken cutting edge 0.5mm | 230/270#~320/400# | Or electroprocessing |
B (medium) | Cutting edge burst 0.3mm | M20~M40 | |
C (finish) | Cutting edge wear 0.1mm | M5~M10 |
Table 2 Classification by the degree of blade failure
Rough machining does not require high cutting edge, and electrical machining or grinding can be selected. The electrical processing efficiency is high, and it is suitable for processing complex tools, such as drill bits for printed circuit boards, forming milling cutters for cutting laminate flooring, etc. Coarse-grained grinding wheel can be selected for grinding, with large contact area and high grinding force (300～400N) during sharpening, which can quickly remove excess machining allowance.
Semiconductor Industry Solutions
PCD & PCBN Tools Grinding Industry
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