Abbe error compensation method and system based on machine tool positioning precision measurement

Abstract

The invention discloses an abbe error compensation method and system based on machine tool positioning precision measurement. The method comprises the steps: arranging a laser interferometer of a measurement device on a machine tool, carrying out the optical debugging, and enabling the laser interferometer to be in a to-be-measured state; recording a measurement program of the numerical control system to enable the program of the numerical control system to be consistent with measurement parameters of the laser interferometer; measuring the positioning error of the machine tool, and generatingan error compensation parameter table; measuring the distance between the emitted light of the laser interferometer and the central axis of the corresponding transmission lead screw, and recording the data as Abbe arm length; and the numerical control system performs superposition operation according to the error compensation parameter table and the abbe error value to generate a compensated positioning error compensation value, and drives the servo motor to perform feeding movement according to the positioning error compensation value to perform error compensation. The method has the advantages that the Abbe error generated in the measurement process is considered, the Abbe error is superimposed on the compensation value to serve as the final positioning precision of the machine tool, and the compensation precision is greatly improved.

Description

technical field [0001] The invention relates to an Abbe error compensation method and system based on machine tool positioning accuracy measurement, and belongs to the technical field of machine tool precision control. Background technique [0002] When CNC machine tools process parts, the accuracy of the machine tool itself is particularly important. Generally speaking, there are many factors in the inaccuracy of CNC machine tools. In order to make the accuracy of the machined parts comparable to or even exceed the accuracy of the machine tool, the method adopted is the method of error compensation. [0003] The positioning error of the machine tool is a key parameter that affects the machining accuracy of machine tool parts. Generally, the method of compensating for this error is to measure the positioning error of the machine tool and then directly fill in the measurement results into the compensation module for compensation. This compensation method is used in actual eng...

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Problems solved by technology

[0003] The positioning error of the machine tool is a key parameter that affects the machining accuracy of the machine tool parts. Generally, the method of compensating for this error is to measure the positioning error of the machine tool and then directly fill in the measurement results into the compensation module for compensation. This compensation method is used in actual engineering applications. A certain effect can be achieved, but the compensation accuracy still has a lot of room for improvement

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