An Online Prediction and Compensation Method for Mesoscale Elastic Thin-walled Parts Deformation

Abstract

The present invention relates to a mesoscale elastic thin-walled workpiece deformation on-line prediction and compensation method and belongs to the machining field. The mesoscale elastic thin-walled workpiece deformation on-line prediction and compensation method is realized by a machine turntable, a dynamometer, a driver, a controller, a cooler, a bracket, a fine milling cutter, an infrared thermal imaging instrument and an adjustment mechanism for compensating radial immersion. With the mesoscale elastic thin-walled workpiece deformation on-line prediction and compensation method of the invention adopted, the deformation condition of a processed thin-walled workpiece can be monitored online in real time; the adjustment mechanism controls a screw and a screw-nut pair to adjust a supporting table in real time, so that radial undercut caused by the deformation of the workpiece can be eliminated, and therefore, machining precision and quality can be improved; and the adjustment mechanism is independent of a machine tool control system and will not affect a tool path planned by an existing program, and therefore, programming efficiency can be greatly increased, and production efficiency can be improved.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to an online prediction and compensation method for the deformation of a mesoscale elastic thin-walled part. Background technique [0002] At present, thin-walled parts with weak stiffness are widely used in aerospace, plastic mold and microelectronics manufacturing and other fields. In the process of processing thin-walled parts, the deformation caused by milling force and temperature is an important reason. In order to reduce the error caused by deformation, the usual practice is to choose reasonable processing conditions, such as low feed, small radial or axial Cut depth and increase the number of tool teeth, but this increases the processing time and processing costs. Although the emergence of high-speed cutting has improved the ability to process thin-walled parts, the problem of machining deformation still occurs in the manufacture of MEMS and micro-milling. In order to ...

AI Technical Summary

Problems solved by technology

Off-line error compensation cannot control the real-time deformation in time. At the same time, the quantitative value of the error is mainly calculated by simulation and completed through the follow-up program compensation. , beating, etc.) to compensate for the deformation caused by it, which affects the processing accuracy and cannot effectively guarantee the processing quality

Images