Stepped deep hole diameter and depth measurement device

Abstract

The invention particularly relates to a stepped deep hole diameter and depth measurement device. The device comprises a main ruler, a ruler frame, a support frame, a connection piece, a sliding rod, an elastic piece and two detection rods, wherein a bottom end of the main ruler and top ends of the two detection rods are all rotationally connected with the connection piece, rotation axes of the bottom end and the top ends are superposed with the axis of the connection piece, the ruler frame is provided with mutually communicated first sliding chute and second sliding chute along a length direction thereof, the main ruler is arranged in the first sliding chute in a sliding form, the connection piece is arranged in the second sliding chute in a sliding form, and two ends of the second slidingchute both has a limiting part in cooperation with the connection piece; the sliding rod is fixedly arranged at the bottom end of the ruler frame, the detection rods are provided with a third slidingchute axially, two ends of the sliding rod are respectively connected with the third sliding chutes of the two detection rods in a sliding form, the elastic piece is used for providing a pre-tightening force for sliding connection between the sliding rod and the third sliding chutes, and the axis of the sliding rod and the axes of the two connection rod are all located in the same plane; and thesupport frame is arranged in a sliding form along the length direction of the ruler frame, and the support frame and the ruler frame are arranged in the form of being perpendicular to each other.

Description

technical field [0001] The invention belongs to the technical field of machining measurement, in particular to a measuring device for the diameter and depth of a stepped deep hole. Background technique [0002] With the development of the machinery manufacturing industry, the size of the parts needs to be inspected during the processing of the parts. Due to the diversity of the sizes and shapes of different parts to be inspected, the required inspection tools are also different. In the field of aperture detection, vernier calipers are mostly used to detect the diameter of the detection hole, but for deep holes, the hole depth is relatively large, and the vernier caliper cannot accurately measure the hole depth and diameter, so the detection purpose cannot be achieved. [0003] The existing patent CN201510487115.2 discloses a measuring device for the inner diameter of a stepped hole. Although the diameter of the deep hole can be measured, the depth of the hole cannot be detec...

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Problems solved by technology

[0004] In order to solve the problem that the diameter and depth of the stepped deep hole are not easy to measure in the prior art, the present invention provides a measuring device for the diameter and depth of the stepped deep hole

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