Mechanical part hole inner ring groove width dimension quantitative measurement device

Abstract

The invention discloses a mechanical part hole inner ring groove width dimension quantitative measurement device, which comprises a screw plug, a spring, an inner pipe, a slide block, a measuring rod, an outer pipe, a meter seat and a dial indicator, wherein an annular radial groove is formed in the outer wall of one end, connected with the meter seat, of the inner pipe; the other end of the inner pipe is provided with two movable measuring heads arranged at intervals; a measuring rod arranged in the inner pipe axially penetrates through the slide block and is tightly locked; the spring arranged on the slide block is axially regulated by the screw plug. The outer pipe sleeves the outer wall of the inner pipe; one end positioned at the meter seat is matched with the radial groove formed in the outer all of the inner pipe through a stop head screw to form a position limiting rotating structure; a static measuring head opposite to the position of the stop head screw is arranged on the outer wall of the other end of the outer pipe; the slide block extending out from the rectangular radial through hole pre-installed in the outer wall of the inner pipe is axially linked with the outer pipe, so that the movable measuring head of the measuring rod moves relative to the static measuring head of the outer pipe. Therefore the measuring structure of directly measuring the workpiece hole inner ring groove width by the dial indicator is formed. The measurement device provided by the invention has the advantages that the structure is simple; the measurement is convenient and fast; the device is directly used for online measurement.

Description

technical field [0001] The invention relates to a measuring device for structural dimensions of mechanical parts, in particular, the invention relates to a quantitative measuring device for the width dimension of inner ring grooves in holes of mechanical parts. Background technique [0002] Gears and bushings are common mechanical parts, and the structural features of these mechanical parts are installed by holes. Ring grooves are usually arranged in the inner holes of gears and bushing parts that are matched with some precision machinery, and the supporting rings or retaining rings of the ring grooves are used to cooperate with the shaft to limit the axial direction. For example, a ring groove is provided in the inner hole of the side gear arranged in the differential of an automobile, and the ring groove is used for fitting a circlip as an axial limit. Because the inner holes of such parts are very small, usually less than 80mm, commercially available general-purpose leng...

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly aims at the problem that commercially available general-purpose length measuring instruments cannot be directly used for measuring the inner structure of the hole less than 80mm, and proposes a quantitative measuring device for the width dimension of the inner ring groove of mechanical parts with simple structure, easy operation and accurate measurement.

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