Digital control machine tool positioning error real-time compensation device

A technology of numerical control machine tools and positioning errors, applied in the direction of program control, computer control, general control systems, etc., can solve the problems of not reaching the level of commercialization, not universal, complex application and implementation, etc., and achieve flexible and universal software modification Strong, hardware-simple effects

Inactive Publication Date: 2008-02-13
SHANGHAI JIAO TONG UNIV
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  • Abstract
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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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  • Digital control machine tool positioning error real-time compensation device

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Embodiment Construction

[0016] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] The structure of the device of the present invention is shown in Figure 1, which is composed of a calculation processing module, a temperature sensor acquisition and transmission module, and a numerical control interface control module. The calculation processing module includes the calculation processing system and external I / O expansion sub-module; the temperature sensor acquisition and transmission module includes the A / D conversion sub-module, the temperature transmitter sub-module and several temperature sensors; the numerical control interface control module can include the compensator side interface and CNC machine side interface.

[0018] In the calculation processing module, the calculation processing system is connected to the A / D conversion sub-module in the temperature sensor acquisition and transmission module through the b...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/404
Inventor 杨建国沈金华张宏韬刘国良郭前建
Owner SHANGHAI JIAO TONG UNIV
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