A Batch Detection Method for Spatial Dimensions of Small Pin Shaft Parts

Abstract

The invention discloses a batch detection method of small pin shaft part space sizes. The batch detection method of the small pin shaft part space sizes comprises the following steps: 1), analyzing space sizes to be measured; 2), determining detection method of a single part and setting part measurement coordinate systems; 3), designing and manufacturing positioning plates assisting part measurement; 4) placing parts on the positioning plate in a batch mode according to requirements for positions of the positioning plates, and then placing the positioning plates on an optical projector; and 5), setting the measurement coordinate systems of the positioning plates by utilizing standards of the positioning plates, then determining part coordinate systems on the basis of the measurement coordinate systems of the positioning plates, and thus repeatedly and circularly measuring other parts. The batch detection method of the small pin shaft part space sizes has the advantages that by designing the assistant positioning plates to be combined with the optical projector, measurement efficiency of small parts is improved, and meanwhile, man-made measurement errors are reduced, measurement accuracy is improved, labor is saved, part detection time is reduced, and part production cycles are shortened.

Description

technical field [0001] The invention relates to a batch detection method for the spatial dimensions of small pin shaft parts, belonging to the technical field of part size measurement. Background technique [0002] In the process of measuring some small pin shaft parts, some space dimensions are often measured. The existing measurement methods cannot directly measure the space dimensions, and the method of indirect measurement of a single piece is often used to calculate the measurement results. . Therefore, it is easy to accumulate errors in the measurement system, resulting in a decrease in measurement accuracy. For a space with a small tolerance zone, it is easy to misjudge qualified products as unqualified products. At the same time, due to the low measurement efficiency of indirect measurement methods , then in the process of mass production, the inspection of the parts cannot be completed in time, and the production cycle of the parts is longer. Contents of the inve...

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Problems solved by technology

[0002] In the process of measuring some small pin shaft parts, some space dimensions are often measured. The existing measurement methods cannot directly measure the space dimensions, and the method of indirect measurement of a single piece is often used to calculate the measurement results.

Therefore, it is easy to accumulate errors in the measurement system, resulting in a decrease in measurement accuracy. For a space with a small tolerance zone, it is easy to misjudge qualified products as unqualified products. At the same time, due to the low measurement efficiency of indirect measurement methods , in the process of mass production, the inspection of parts cannot be completed in time, and the production cycle of parts is longer

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