Thermal load simulation and error detection system and method for machine tool cutting process

Abstract

The invention discloses a thermo-mechanical load simulation and error detection system and method for a machine tool cutting machining process. The machine tool thermo-mechanical load simulation and error detection system comprises a machine tool working table, a spindle core rod, a controller, a control system, a cutting thermal simulation device, a one-way cutting force simulation device and a machine tool feeding system heat source simulation device, wherein the cutting thermal simulation device and the one-way cutting force simulation device are arranged on the machine tool working table. According to the thermo-mechanical load simulation and error detection system and method for the machine tool cutting machining process, a mechanism of a machine tool does not need to be dismounted from the machine tool, so that an experimental situation more accords with the actual working condition; and meanwhile, an error value can be fed back to a compensation module in a machine tool control system, the machining error can be decreased, and the machining precision can be improved.

Description

technical field [0001] The invention relates to metal cutting machine tools in the field of mechanical technology, in particular to thermal loads, cutting thermal loads and cutting force loads at various heat sources under simulated real cutting conditions of machine tools, and a detection device for tool thermal errors and force errors. Background technique [0002] There are many factors that restrict the accuracy of machine tools. Typical organic machine tool thermal errors, geometric errors, and transmission chain errors. The identification methods, modeling methods, and compensation methods for the above errors have been relatively well studied. With the popularization and application of high-speed hard cutting, difficult-to-cut materials and high-speed dry cutting, the influence of cutting load error, which was seldom considered before, on the machining accuracy of machine tools has become more and more prominent, especially the machining error caused by thermal-mechani...

AI Technical Summary

Problems solved by technology

However, in machining where the cutting depth and cutting amount are gradually increased, the cutting force is undoubtedly increased a lot, and difficult-to-cut materials gradually occupy a place in machining. For these materials with poor cutting performance, a large cutting force will occur. force, resulting in machining errors

[0006] During machine tool cutting, affected by the rotation of the spindle, the movement of the feed mechanism and chips, geometric detection devices such as laser interferometers and laser displacement sensors cannot be installed on the machine tool, and the errors caused by various loads on the machine tool cannot be measured online. Through The method of simulating loading of various loads of the machine tool to simulate the actual working conditions of the machine tool and then performing error detection is generally only aimed at the force (moment) load of the machine tool. In the current research, no precedent for simulated loading of the thermal load of the machine tool has been found.

Images