Checking standard part and checking method of coordinate measuring machine

Abstract

The invention provides a checking standard component and a checking method of a coordinate measuring machine. The checking standard component comprises a mounting shaft, a reference block, a simulation workpiece and a standard ball, and the reference block, the simulation workpiece and the standard ball are sequentially arranged on the mounting shaft in a penetrating manner. Before checking, the characteristic parameters of the simulation workpiece are calibrated, and the obtained characteristic parameter values are taken as characteristic parameter standard values; during checking, a coordinate measuring machine is started, and probe calibration is carried out by using the standard ball; the characteristic parameters of the simulation workpiece are measured, and and measured characteristic parameter values are taken as actual measurement values; and the actual measurement values are compared with the characteristic parameter standard values, if the error of the actual measurement values relative to the characteristic parameter standard values is within an allowable range, it is judged that the state of the coordinate measuring machine is normal, and otherwise, it is judged that the state of the coordinate measuring machine is abnormal. According to the method, the state change of the coordinate measuring machine can be found in time, so that the risk of correctness of a detection result due to quantity misalignment caused by the state change is avoided.

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...

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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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