Based on the above grinding characteristics of PCD, the requirements for the extension bar of the grinding equipment when grinding PCD with a diamond grinding wheel are much higher than those of the general tool grinder. Mainly include:
2. The machine has a short-range swing mechanism with adjustable stroke and speed
The grinding ratio of PCD is extremely low, and the grinding mechanism of PCD is mainly the result of the mixing of micro-crushing, wear, peeling, cleavage and other mechanical effects, oxidation, and graphitization through the continuous impact of diamond grinding wheel on PCD materials. Therefore, the adoption of the short-swing mechanism is beneficial to improve grinding efficiency and cutting edge quality. Generally, the swing distance is 0 ~ 50mm, and the swing speed is 20 ~ 60 times/min.
3. The tool holder of the machine has a high-precision rotary function and online detection device
As everyone knows, because PCD materials are hard and fragile and wear-resistant, tooltips are usually designed to be curved to reduce the relative vibration amplitude of the tool and the workpiece to improve grinding efficiency. When the PCD tool is used, in order to achieve the processing of the tooltip, the tool holder of the machine tool should have a high-precision rotation function and an on-line detection device for the tooltip radius size and quality. In this way, positioning errors caused by multiple loadings can be avoided, and processing efficiency can be doubled.
