Device and method for grinding cold-drawing die

Abstract

The invention discloses a device and method for grinding a cold-drawing die. The device comprises a rack, a floating platform and an elastic compression spring, wherein the rack comprises a base and a vertical column which is fixed on the base; an inner hole is formed in the middle of the vertical column; the floating platform comprises a working platform and a sleeve which is fixed on the working platform; the sleeve is in clearance fit with the vertical column; a positioning pin is fixed at the middle of the sleeve; the elastic compression spring is arranged inside the inner hole of the vertical column; and one end of the elastic compression spring is sleeved on the positioning pin. The device has the beneficial effects that as the die to be polished on the device can float on the water level when being put on the floating platform, and the axis of a working die hole can be automatically aligned and overlapped with the axis of a grinding head in the grinding process, thereby ensuring that the grinding force is uniformly distributed on a whole grinding plane; and moreover the grinding force can be judged according to the die material, the damage degree and the grinding material performance so as to be effectively adjusted and controlled, the grinding efficiency and the grinding quality are greatly improved with high grinding precision.

Description

technical field [0001] The invention belongs to the field of mold manufacturing and maintenance, and specifically relates to a cold-drawn mold grinding device and method, which is especially suitable for grinding high-precision and high-gloss steel pipe cold-drawn outer molds, such as polycrystalline high-precision steel pipe cold-drawn outer molds. Die grinding. Background technique [0002] The outer mold for high-precision steel pipe cold drawing, due to the high dimensional accuracy and surface quality requirements of the drawn product, when the mold is slightly hairy, worn, or adhered to fine granular debris, defective products will be generated and cannot be used normally , Serious ones can only be scrapped. Minor ones can be repaired by grinding. [0003] The traditional grinding method: fix the mold to be repaired in the three-jaw chuck of the lathe, install the grinding head on the tool holder, adjust the tool holder, extend the grinding head into the mold hole, a...

AI Technical Summary

Problems solved by technology

Since the relative position between the grinding head and the die hole is set manually by adjusting the tool holder, it is difficult to ensure the coaxiality between the grinding head and the die hole, resulting in uneven grinding force at each part of the die hole and poor repair effect

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