CN207764040U - Thin-wall bushing hardness measurement fixture - Google Patents

Abstract

The utility model relates to a fixture for measuring the hardness of a thin-walled bush, which comprises a measuring tool body, a positioning block, and a fixture handle. On the side of the measuring tool body; the upper end of the measuring tool body is set in an arc shape, and the arc shape is matched with the inner ring arc surface of the bush to be tested, and an arc-shaped supporting surface is also arranged on the measuring tool body. The support surface secures the bushing under test to the gage body. The thin-walled bush measuring fixture provided by the utility model has very simple clamping, true and accurate measurement results, and the whole measurement process is easy to operate. The detection efficiency is greatly improved.

Description

Thin-wall bushing hardness measurement fixture

technical field

The utility model relates to a fixture, in particular to a fixture for measuring the hardness of a thin-walled bush.

Background technique

Thin-walled bushings commonly used in machinery are sometimes carburized on the outer surface of the bushing in order to improve wear resistance. Before use, the hardness of the carburized surface needs to be measured. When directly measuring the thin-walled bushing, due to the thin wall of the bushing, pressure is applied during measurement, which easily deforms the bushing. At present, the commonly used method is to use pads to pad the measurement surface of the part, but the contact effect of the contact surface is not good. It needs multiple measurements to find the best measurement position, and it needs experienced measurers to operate to truly reflect the hardness value of the part. low efficiency.

Contents of the invention

The purpose of the utility model is to provide a thin-walled bush measuring fixture with simple structure, fast measurement and easy operation. The technical solution of the utility model is that the measuring fixture includes a measuring tool body, a positioning block, and a fixture handle, the positioning block is arranged at the lower end of the measuring tool body, and the measuring tool is positioned on the measuring device; The side of the body; the upper end of the measuring tool body is set in an arc shape, and the arc shape is matched with the inner ring arc surface of the bushing to be tested, and an arc-shaped support surface is also arranged on the measuring tool body, and the support surface can be Fix the bushing to be tested on the measuring tool body.

When the utility model is in use, the part to be tested is first installed on the fixture, and the arc support surface and the inner groove support surface are in close contact with the part, and the fixture is placed on the hardness measuring device by using the fixture handle. The base of the meter is fitted to position the part under test,

When the hardness tester is loaded with test force, the measurement speed is fast and the measurement results are stable because the parts are closely matched with the arc support surface of the fixture. The thin-wall bush measuring fixture provided by the utility model has very simple clamping, true and accurate measurement results, and the whole measurement process is easy to operate. The detection efficiency is greatly improved.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the application figure of the utility model.

Detailed ways

As shown in the figure, a jig for measuring the hardness of a thin-walled bush includes a measuring tool body 1, a positioning block 2, and a clamp handle 3. The positioning block 2 is arranged at the lower end of the measuring tool body 1, and the measuring tool is positioned at the measuring On the equipment; the fixture handle 3 is installed on the side of the measuring tool body 1; An arc-shaped support surface is provided, and the support surface can fix the tested bush on the measuring tool body 1 .

Claims (1)

1. A fixture for measuring the hardness of a thin-walled bush, characterized in that the fixture comprises a measuring fixture body (1), a positioning block (2), and a fixture handle (3), and the positioning block (2) is arranged on The lower end of the measuring tool body (1), and the measuring tool is positioned on the measuring device; the fixture handle (3) is installed on the side of the measuring tool body (1); the upper end of the measuring tool body (1) is set in an arc shape, and the The arc of the bushing to be tested is matched with the arc surface of the inner ring of the bush to be tested, and an arc-shaped support surface is also provided on the measuring tool body (1), which can fix the tested bushing on the measuring tool body (1) .