Polycrystalline diamond compact surface polishing machine with adaptive temperature and pressure

Abstract

The invention discloses a polycrystalline diamond compact surface polishing machine with adaptive temperature and pressure. The polishing machine comprises a grinding wheel device, a detection device,an execution device, a control device and at least one eccentric rotary polishing device corresponding to the grinding wheel device; and the grinding wheel device, the detection device, the executiondevice and each eccentric rotary polishing device are respectively connected with a control device. The polishing machine not only has the advantages of a double-rocker swing mechanism, but also canrealize the rotation of a polycrystalline diamond compact in the polishing process and continuously and stably eccentrically rotate on the end surface of the grinding wheel, the polished surface is prevented from being scratched; and moreover, the polishing machine realizes self-adaptive control of polishing pressure, temperature and load current of a grinding wheel driving motor, improves polishing efficiency and quality, reduces stress deformation and thermal deformation influence of a large-area (even super-large-area) of the polycrystalline diamond compact, and solves the problem of immediate dressing of a polishing and grinding wheel.

Description

technical field [0001] The invention relates to a surface polishing machine for a polycrystalline diamond composite sheet, in particular to a surface polishing machine for a polycrystalline diamond composite sheet self-adapting to temperature and pressure (hereinafter referred to as a polishing machine), which belongs to the field of mechanical polishing of surfaces of special materials. Background technique [0002] Polycrystalline diamond (Polycrystalline diamond, referred to as PCD) composite sheet is a composite material that is synthesized by placing artificial diamond powder and adhesive on a cemented carbide substrate through high temperature and high pressure. The polycrystalline diamond composite sheet combines the extremely high wear resistance of polycrystalline diamond and the high impact resistance of cemented carbide, so that it has excellent cutting performance. In order to ensure rapid chip removal during cutting and avoid scratches on the surface of the mach...

AI Technical Summary

Problems solved by technology

[0005] 1. The polishing pressure is applied manually based on experience, and the polishing pressure control is unstable

If the polishing pressure is small, it takes a long time for the polished surface to match the grinding wheel, and the processing efficiency is low; if the polishing pressure is too high, the grinding wheel wears quickly, and it is easy to burn the polished surface due to overheating

[0006] 2. The load of the grinding wheel drive motor is not monitored during the polishing process, and the timing of grinding wheel dressing is not accurately grasped

The traditional polishing process adopts regular dressing of the grinding wheel. When dressing the grinding wheel, either the grinding wheel has lost its sharpness and many useless man-hours have been consumed, or the grinding wheel can continue to be used, but excessive dressing causes waste.

[0007] 3. The temperature in the polishing area fluctuates greatly, often exceeding the allowable range, resulting in increased thermal deformation of the workpiece and increased polishing time

Images