Calibration standard part and calibration method of a coordinate measuring machine

Abstract

The invention provides a calibration standard part and a calibration method of a coordinate measuring machine. The calibration standard part includes an installation shaft, a reference block, a simulated workpiece and a standard ball, and the reference block, simulated workpiece and standard ball are sequentially installed on the installation shaft superior. Before the calibration, the characteristic parameters of the simulated workpiece are calibrated, and the obtained characteristic parameter values ​​are used as the standard value of the characteristic parameters; when the calibration is performed, the coordinate measuring machine is started, and the stylus is calibrated with a standard ball; then the characteristic parameters of the simulated workpiece are measured, and the measured The obtained characteristic parameter value is used as the actual measured value; compare the actual measured value with the standard value of the characteristic parameter, if the error of the actual measured value relative to the standard value of the characteristic parameter is within the allowable range, it is determined that the state of the coordinate measuring machine is normal, otherwise, It is determined that the state of the coordinate measuring machine is abnormal. The invention can detect the state change of the coordinate measuring machine in time, so as to avoid the risk to the correctness of the detection result caused by the inaccuracy of the value caused by the state change.

Description

technical field [0001] The invention relates to the field of blade detection, in particular to a calibration standard part of a coordinate measuring machine and a calibration method. Background technique [0002] The state control of the coordinate measuring machine usually adopts the method required in the national calibration specification JJF1064 for periodic measurement. However, the coordinate measuring machine at the production site may be affected by factors such as temperature fluctuations, humidity, dust, vibration, etc., which may cause the state of the measuring machine to be within the validity period. Changes have brought greater risks to the detection work. [0003] Especially for the coordinate measuring machine used for blade detection, since the measured workpiece is an irregular surface, the measured parameters have related detection requirements such as leaf pot, blade back, leading edge, trailing edge, etc., so the requirements for the state of the coordi...

AI Technical Summary

Problems solved by technology

[0002] The state control of the coordinate measuring machine usually adopts the method required in the national calibration standard JJF1064 for periodic measurement. However, the coordinate measuring machine at the production site may be affected by factors such as temperature fluctuations, humidity, dust, and vibration, which may cause the state of the measuring machine to be within the validity period. Changes have brought greater risks to the detection work

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