Digital control machine tool positioning error real-time compensation device

Abstract

The invention relates to a position-error real time compensation device of numerical control machine. The position-error real time compensation device that is machine- outside-coordinate-bias-based comprises a compute and process module, an acquisition and transmitter module of a temperature sensor and a numerical control interface control module. A processing system of the compute and process module collects temperature signals of numerical control machine while receiving signals of machine coordinate location from the numerical control system, entering the signals into a mathematical model of positional error that is previously set up to obtain compensation value and delivering the compensation value to the numerical control machine by an inter face of the numerical control system to complete the whole compensation process. The invention completes the compensation operation by design of the interface and software, which does not affect previous numerical control system and processor. The hardware is relatively simple and the software is flexible to modify with good commonality.

Description

technical field [0001] The invention relates to a real-time compensation device for positioning error of a numerical control machine tool, which can real-time adjust the relative position of a cutter and a machined part, so that the numerical control machine tool can obtain higher machining accuracy. It belongs to the field of precision machine tool technology or precision machining. Background technique [0002] After years of development, my country's machine tool production has made great achievements and has become one of the major machine tool production countries. However, in terms of technical level and overall strength, it is only in the middle and front position of the second echelon in the world. At present, the CNC machine tools produced in my country account for about 31% of the domestic market share, and the rest are imported from abroad. At present, the vast majority of my country's mid-to-high-end CNC machine tool market is occupied by overseas products, and ...

AI Technical Summary

Problems solved by technology

At present, the real-time compensation technology of CNC machine tool errors and its real-time compensators are not widely used in foreign factories and enterprises, and have not yet reached the level of commercialization; in China, they are still mainly in the laboratory stage, although there are also literatures that mention the development Compensation device, but the application implementation is complex, the scope of application is narrow, it is not universal, and it is difficult to promote practical application

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