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A Method of Temperature Compensation for CNC Machine Tool Based on Error Adaptation

A CNC machine tool and temperature compensation technology, applied in the field of machine tools, can solve problems such as difficult maintenance and replacement, affecting the work of machine tools, etc., to achieve the effects of ensuring machining accuracy, avoiding redundant work, and improving work efficiency

Inactive Publication Date: 2018-05-15
ANHUI PROVINCE JIEYONGDA INTELLIGENT MACHINE
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] At present, there are many technologies for pre-installing temperature sensors on machine tools to monitor temperature differences, but most of the installation positions are likely to interfere with the operation of the machine tool, affecting the work of the machine tool, and it is difficult to repair and replace if damaged

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  • A Method of Temperature Compensation for CNC Machine Tool Based on Error Adaptation

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Embodiment Construction

[0023] refer to figure 1 , a method for temperature compensation of a CNC machine tool based on error adaptation proposed by the present invention includes the following steps.

[0024] S1. Establish a temperature difference calculation model.

[0025] In this embodiment, the temperature difference calculation model can be obtained by pre-installing a temperature sensor on the machine tool of the same model, and then obtaining the temperature difference in various motion states through the temperature sensor, and calculating the temperature difference calculation model according to the corresponding relationship between the motion state and the temperature difference .

[0026] The temperature difference calculation model is: Among them, T i is the current temperature difference, T i-1 is the temperature difference at the latest speed change of the moving shaft, V i is the current movement speed of the movement axis, V i-1 is the movement speed of the movement axis befo...

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Abstract

The invention discloses a numerical control machine tool temperature compensating method based on error adaption. The numerical control machine tool temperature compensating method comprises the following steps of S1, establishing a temperature difference calculating model; S2, obtaining motion state of a target motion shaft of the machine tool, and computing a current temperature difference according to motion state and a temperature difference computing model; S3, computing the current deformation according to the current temperature difference; S4, obtaining an allowed error range; S5, determining whether the current deformation exceeds the allowed error range; and S6, performing error compensation on the target motion shaft according to a determining result. The numerical control machine tool temperature compensating method based on error adaption has advantages of ensuring high machining precision of the machine tool through error compensation, preventing a large amount of redundant work of error compensation through comparing with the allowed error range, and improving working efficiency of the machine tool.

Description

technical field [0001] The invention relates to the technical field of machine tools, in particular to an error adaptation-based temperature compensation method for a numerically controlled machine tool. Background technique [0002] As a semi-automatic mass production tool, CNC machine tools play a pivotal role in the manufacturing industry. However, when the machine tool is running, there is relative motion between the transmission parts, and the friction of the machine tool screw, nut seat, bearing, etc. generates heat, which leads to thermal expansion and contraction, resulting in changes in the three-axis displacement of the machine tool, resulting in errors in the processed workpiece. To solve the above problems, it is necessary to monitor the temperature change of each transmission part, and then calculate the error value of the machine tool displacement according to the relative relationship between the deformation of each transmission part and the temperature change...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/404
CPCG05B19/404G05B2219/37509
Inventor 毛益飞杨纪村葛峰王宇石云张帝
Owner ANHUI PROVINCE JIEYONGDA INTELLIGENT MACHINE
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