Live axle tunneling/turning method and device

Abstract

The invention provides a live axle tunneling / turning method and device, which belong to the field of ultraprecise cutting and complicated curved surface cutting. The method comprises the following steps: clamping a workpiece at the front end of a main shaft of an ultraprecise numerically-controlled lathe; arranging a live axle tunneling / turning device on an X-axis slide carriage or Z-axis slide carriage; and carrying out active control on the drive signals of two live axles of the live axle tunneling / turning device, thus synchronously forming a rapid tool reciprocating motion required for theturning generation of free curved surfaces and a rapid tool tunneling / turning motion required for realizing the cutting of materials difficult to machine. Because of having multi-element varying-parameter cutting characteristics, the invention can efficiently realize the high-quality generation of complicated curved surfaces of materials difficult to machine.

Description

technical field [0001] The invention belongs to the technical fields of ultra-precision cutting and cutting of optical parts, and relates to a method and device for driving and turning of a live shaft, which is suitable for high-efficiency and high-precision cutting and creation of free-form surface parts of difficult-to-machine materials. Background technique [0002] Complex parts such as optical free-form surfaces and bionic microstructure surfaces have a wide range of application requirements in many important industrial fields. In most applications, these complex parts and their molds are often made of superhard steel, titanium alloys, silicon carbide and cermets, etc. Difficult-to-machine materials, high-quality processing of these complex parts and molds have become one of the keys to promote breakthroughs in these important industrial fields. Single-edge diamond turning is considered to be an ultra-precision machining method that can efficiently obtain complex surfac...

AI Technical Summary

Problems solved by technology

However, these vibration-assisted cutting methods, including the recently proposed 3D EVC, cannot yet achieve the reciprocating tool feed motion required for complex surface creation

So far, the Japanese scholar E. Shamoto and his collaborators have reported the creation of free-form surfaces of difficult-to-machine materials. In October 2010, they wrote an article in the international magazine "Precision Engineering" and proposed to change the elliptical motion in EVC. Amplitude can be used to realize the cutting of complex curved surfaces of difficult-to-machine materials, but the main defects of this method are: first, it is difficult to create a free-form surface with large "non-rotational symmetry" only by changing the major and minor axes of the ellipse; , changing the major and minor axes of the ellipse will lead to changes in the shape of the ellipse, which will definitely affect the geometric and physical characteristics of the processed surface; third, on the processed surface with different curvature changes, it is difficult for the ellipse to wrap the surface with the same residual height, and the surface quality of the processed surface unevenness, which is especially critical in precision and ultra-precision cutting

Images