Positioning method and device for measuring internal teeth of long-axis part

Abstract

The invention discloses a positioning method for measuring the internal teeth of a long-axis part. The method comprises the following steps that S10, a fastening device is assembled on a mounting base, the part is inserted into the fastening device, and the end face of the part is attached to a first conical table on the mounting base; and S20, a nut on the fastening device is rotated, so that a clamping sleeve on the fastening device is folded to clamp the surface of the part. The invention further discloses an internal tooth measuring device which comprises a base, a measuring assembly is arranged on the base, and a measuring head extends out of the measuring assembly. A mounting base is further arranged on the base, and the mounting base comprises a first boss, a second boss arranged onthe first boss and a first conical table arranged on the second boss; and the fastening device is arranged on the mounting base. According to the positioning method and device for measuring the internal teeth of the long-axis part, the method of one-end positioning, middle clamping and common positioning is adopted, a detection head can conveniently stretch into the long-axis part from the otherend of the part, the positioning is firm, and the detection precision is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of measuring internal teeth of long-axis parts, and in particular relates to a positioning method for measuring internal teeth of long-axis parts. At the same time, the invention also designs a device for measuring internal teeth of long-axis parts. Background technique [0002] Shaft parts are one of the typical parts often encountered in hardware accessories. They are mainly used to support transmission parts, transmit torque, bear loads, etc. According to the different structural forms of shaft parts, they can generally be divided into optical shafts, stepped shafts and There are three types of special-shaped shafts; or divided into solid shafts and hollow shafts; or divided into long shafts and short shafts. [0003] Shaft parts need to be inspected on their surface or inner hole, such as surface texture inspection, runout inspection, etc. For the detection of the outer surface of the shaft parts, such ...

AI Technical Summary

Problems solved by technology

For some hollow shaft parts, the inner wall of the hollow structure is provided with an internal tooth structure, and the internal tooth structure also needs to be tested. During the test, since the detection head needs to be inserted from one end, the traditional clamping and fixing method at both ends It cannot be used. At present, this kind of inspection work needs only one end to be clamped and positioned, and then a special inspection tool is inserted from one end of the part for inspection. The operation is troublesome and the inspection accuracy is poor.

[0004] In addition, the applicant found that, especially for long-shaft hollow parts, the detection operation of the internal teeth is more inconvenient. The traditional fixing method has low coaxiality and poor stability, resulting in inconvenient detection and poor detection accuracy.

Images