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PCD tool design


2020-05-27


PCD granularity
The choice of PCD particle size is related to the machining conditions of the tool. For example, when designing the tool for finishing or superfinishing, PCD with high strength, good toughness, good impact resistance, and fine grain should be selected. Coarse grain PCD tools can be used for general rough machining. The particle size of PCD material has a significant effect on tool wear and breakage. The results show that the larger the particle size of PCD is, the stronger the wear resistance of the tool is.

The thickness of the blade
Generally, the thickness of the PCD composite sheet is about 0.3 ~ 1.0mm, and the total thickness after adding the cemented carbide layer is about 2 ~ 8mm. The thinner PCD layer thickness is beneficial to the edm of the blade. The thickness of the cemented carbide layer should not be too small when the PCD composite sheet is welded to the cutter body material, so as to avoid the layering caused by the stress difference between the two material bonding surfaces.


The structure design
The geometric parameters of PCD tools depend on the workpiece condition, tool material and structure, and other specific processing conditions. Because PCD tool is often used in the workpiece finishing machining, cutting thickness is small (sometimes even equal to the cutting tool’s cutting radius), belongs to the micro-cutting, so the rear Angle and the rear knife face processing quality has a significant impact, smaller rear Angle, higher quality of the rear knife surface can play an important role in improving the PCD tool processing quality.
The connection modes of PCD composite piece and cutter rod include mechanical clamping, welding, and indexable, etc.

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  • BEIJING DEMINA PRECISION MACHINERY CO., LTD.

    [JIANGXI GEQI GRINDING TECHNOLOGY CO., LTD.]

    Address:
    Room 1-6, Building 2, Hongfu Science Park, BeiQiJia Town, Changping District, Beijing, China
    Factory Address:
    Xiangtian Industrial Park, San Zhua Lun Street, Jingan County, Yichun City, Jiangxi Province 330600, China
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