Novel system and method for compensating temperature of numerical control machine tool

Abstract

The invention discloses a novel system and method for compensating the temperature of a numerical control machine tool. The novel system comprises a plurality of temperature sensors arranged on the machine tool, and a transducer, a programmable logic control (PLC) module and an axis module which are connected with the temperature sensors sequentially, wherein one end of the axis module is connected with a numerical control unit for temperature compensation, and the other end of the axis module is connected with a driver. The novel method comprises the following steps of: acquiring, calculating a temperature compensation value, correcting and outputting. Actual temperature curves of different positions of the machine tool are acquired by the temperature sensors; a compensation amount is output to the driver through temperature compensation to drive a servo motor to perform position compensation; and therefore, the shortcoming that the numerical control machine tool can generate errors easily under the condition of a general workshop environment is overcome, and the machining precision and the positioning precision are improved.

Description

technical field [0001] The invention relates to a temperature compensation system and a compensation method, in particular to a new type numerical control machine tool temperature compensation system and a compensation method. Background technique [0002] Metal materials have the property of "expanding with heat and contracting with cold", which is usually described by the coefficient of thermal expansion in physics. At present, the basic parts of guide rails such as the bed, column, and carriage of CNC machine tools, and the transmission components such as ball screws are all made of metal materials. An additional error will be generated on the position of the movement axis of the machine tool, which will directly affect the positioning accuracy of the machine tool, thereby affecting the machining accuracy of the workpiece. [0003] For CNC machine tools used under ordinary workshop environmental conditions, especially large-scale machine tools with relatively long strok...

AI Technical Summary

Problems solved by technology

At present, the basic parts of guide rails such as the bed, column, and carriage of CNC machine tools, and the transmission components such as ball screws are all made of metal materials. Additional errors will be generated on the position of the movement axis of the machine tool, which will directly affect the positioning accuracy of the machine tool, thereby affecting the machining accuracy of the workpiece

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