Novel quenching deformation control method for machine tool slide guide

Abstract

The invention discloses a novel quenching deformation control method for a machine tool slide guide. A slide guide that is made of an HT200 or HT300 cast iron material of a precision machine tool is subjected to surface high-frequency heating and quenching. The two ends of the slide guide (1) are fixed and a pressing force is applied on the middle part of a surface (5). The size of the pressing force is based on that the degree of deformation of the middle part of the guide is 1 mm. Then the slide guide is subjected to surface high-frequency induction quenching. By adjustment of process parameters, the pressing force and the stress are approximate and offset with each other so that an effect of micro-deformation or no deformation can be achieved, thus meeting technical requirements and production needs. The economic benefit of the method is significant.

Description

technical field [0001] The invention relates to a new method for controlling quenching deformation of machine tool guide rails. Background technique [0002] Usually, the middle part of the guide rail surface (2) is concave along the length direction, and the deformation is 0.2-3mm. Due to the large deformation of the workpiece, not only the amount of grinding is increased, but also the consumables are time-consuming, which increases the cost, and also reduces the accuracy and size of the guide rail. The stability is reduced, the service life is shortened, and the production efficiency is reduced. [0003] With the development of combined machine tools and precision machine tool industries, the requirements for machine tool guide rails, the main sliding parts of machine tools, are getting higher and higher. The guide rails are mostly made of cast iron HT200 or HT300 materials, and the surface is heated and quenched by high frequency to achieve high hardness, high wear resist...

AI Technical Summary

Problems solved by technology

[0002] Usually, the middle part of the guide rail surface (2) is concave along the length direction, and the deformation is 0.2-3mm. Due to the large deformation of the workpiece, not only the amount of grinding is increased, but also the consumables are time-consuming, which increases the cost, and also reduces the accuracy and size of the guide rail. Decreased stability, shortened service life, reduced production efficiency