The production process of PCD cutting tools generally includes polishing, cutting, bonding, grinding, and quality inspection. The diameter of PCD superhard material blanks is usually 1/2, 1, 2, 3, or 4 inches, and their surfaces are usually rough and cannot be directly used to make tools. They need to be ground and polished to achieve a mirror surface.
One of the key technologies for manufacturing PCD cutting tools is the grinding quality of the cutting edge. The lack of ideal grinding technology and techniques for quality cutting tool materials will result in resource waste. Using good grinding technology can improve product quality and reduce the cost of tool use.
Since PCD material has high hardness, the grinding machine must have high deformation resistance, especially the spindle system and tool clamping system. The grinding force of PCD cutting blade grinding is generally 100-500N. Therefore, the machine tool requires a large shaft diameter, and the axial rigidity and strength of the bearings must be high.
PCD grinding has a low ratio of cutting to abrasion. The main grinding mechanism of PCD material is a mechanical action of a mixture of microfracture, wear, shedding, and delamination caused by RVD tools constantly impacting PCD materials and a mixture of thermal-chemical actions such as oxidation and graphitization. Therefore, using a short stroke swing mechanism can improve grinding efficiency and improve the quality of the cutting edge of the tool.
Due to the hardness, brittleness, and wear-resistance of PCD cutting tools, their cutting tips are usually designed to be arc-shaped to reduce the amplitude of relative vibration between the tool and the workpiece.
To achieve the processing of the arc-shaped cutting edge, the tool clamp of the machine tool should have a high-precision rotary function and an online detection device for the size and quality of the arc radius of the cutting edge. This can avoid positioning errors caused by multiple clamping and greatly improve processing efficiency.
E-Grind Abrasives is a professional diamond and CBN product manufacturer with over 50 years of experience. Our goal is to meet 100% customer satisfaction. We pay attention to every detail in the production process, and every product we produce is traceable. We provide a full range of abrasive products for cutting, grinding, and polishing. With advanced manufacturing and inspection facilities, our products are highly consistent. Contact us for more information.
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