Ring slot diameter testing fixture

Abstract

The invention discloses a ring slot diameter testing fixture. The ring slot diameter testing fixture includes a testing fixture body and a measuring device, wherein the testing fixture body is rectangular-strip shaped; two ends of the testing fixture body are each provided with a locating piece; the measuring device includes a fixing measuring head at the bottom surface of the testing fixture body, two floating measuring heads, and a scale on the upper part of the testing fixture body; the two floating measuring heads are arranged symmetrical with the testing fixture body, and are driven by a measuring point swing arm which is arranged on the testing fixture body in a rotary manner so as to be arranged on the bottom surface of the testing fixture body in the horizontal direction in the sliding way; and the measuring end of the scale keeps abutting against one side surface of the measuring point swing arm. For the ring slot diameter testing fixture, the fixing measuring head is put in an inner ring slot of a workpiece to be measured, and then the measuring point swing arm is operated through human hands, so that the two floating measuring heads at the other end enter the ring slot and the floating measuring heads keep contacting the inner wall of the ring slot. Therefore, the reading of the scale is the diameter of the ring slot. Compared with a general testing fixture, the ring slot diameter testing fixture has the advantages of being more convenient and quick in operation, being more stable and accurate in the measuring result, being not restricted by places, and being high in practicability.

Description

technical field [0001] The invention relates to a machining inspection tool, in particular to a ring groove diameter inspection tool. Background technique [0002] Various parts in machining need to meet the accuracy requirements before they can be used. Large diameter parts with ring grooves are not easy to measure because the ring grooves are set on the inner side. The existing measurement methods are as follows: [0003] (1) A conventional inner diameter gauge is used, but the measuring head cannot enter the measuring inner hole, and the measurement is very inconvenient; [0004] (2) Use the inner diameter micrometer to measure, but the inner diameter micrometer is often used for products with less strict requirements, and has a large error; [0005] (3) Using three-coordinate measurement, the measurement speed is slow and cannot be measured on the production site. [0006] It can be seen that the current ring groove measurement has the problem of low on-site measurem...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the current ring groove measurement has the problem of low on-site measurement accuracy

Images