Detection tool for rapidly detecting pitch of threaded holes of part

Abstract

The invention relates to a testing fixture for rapidly detecting the pitch of threaded holes on a part, which is used for detecting the pitch of a plurality of detected threaded holes processed on the inner annular end face of the part, the detected threaded holes are positioned on the same circumference, and the testing fixture comprises a positioning disc, a contact type displacement measuring piece, a detection screw and a positioning screw, the positioning disc is provided with detection holes which are correspondingly consistent with the positions of detected threaded holes of a standard part, during detection, the positioning screws respectively and correspondingly penetrate through the detection holes and are fixedly connected to the detected threaded holes, the detection screws are fixed on the positioning disc, the contact type displacement measuring piece is fixedly suspended above the positioning disc, and the contact type displacement measuring piece is fixed on the positioning disc. And a measuring head of the contact type displacement measuring piece is always in contact with the detection screw. Compared with the prior art, the method has the advantages that three-coordinate assistance is not needed, rapid detection can be achieved only through a dial indicator and the like, and the method is simple, easy to implement and suitable for batch rapid detection.

Description

technical field [0001] The invention belongs to the technical field of hole distance detection, and relates to a checking tool for quickly detecting the hole distance of threaded holes of parts. Background technique [0002] At present, due to the inaccurate measurement data of the threaded hole distance, the long time wasted in detection, and the low detection efficiency, many products are repeatedly aligned during the assembly process, which seriously affects assembly efficiency and product quality. For such as Figure 5 The measured workpiece shown has a 6-M8 threaded hole processed on the inner ring end surface, and the hole distance cannot be directly measured. After measuring the data in two directions of each threaded hole of each piece, the actual hole distance and The standard is compared to determine whether it is qualified, so it takes a long time to inspect several pieces at a time, and the detection efficiency is very low. Moreover, every time when faced with su...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the inaccurate measurement data of the threaded hole distance, the long time wasted in detection, and the low detection efficiency, many products are repeatedly aligned during the assembly process, which seriously affects assembly efficiency and product quality.

For such as Figure 5 The measured workpiece shown has a 6-M8 threaded hole processed on the inner ring end surface, and the hole distance cannot be directly measured. After measuring the data in two directions of each threaded hole of each piece, the actual hole distance and The standard is compared to determine whether it is qualified, so it takes a long time to inspect a few pieces at a time, and the detection efficiency is very low. Moreover, every time when faced with such a problem, the inspector can only conduct random inspections, and cannot achieve complete and accurate inspections.

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