D shape guide pin top and bottom positioning structure of hole position check tool

Abstract

The invention relates to a D shape guide pin top and bottom positioning structure of hole position check tool, comprising a detection pin, a rotating sleeve and a D shape guide pin sliding support; wherein the D shape guide pin sliding support is sheathed at the outer side of the detection pin, the lower end face thereof is provided with a larger-diameter step face with a bolt hole; the rotating sleeve is sheathed at the outer side of the D shape guide pin sliding support, the upper side of the rotating sleeve is provided with a limit press cake; the outer side of the rotating sleeve is fixed with a rotating handle pin, the wall of the rotating sleeve is provided with an inversed 'L' shape first through hole, the wall of the D shape guide pin sliding support is provided with a vertical second through hole, one end of an up-down shifting pin is respectively fixed on the detection pin by virtue of the through holes on the rotating sleeve and the D shape guide pin sliding support. In the invention, the rotating sleeve is sheathed at the outer side of the D shape guide pin sliding support, so that the previous detection pin which only can move up and down and can not be fixed at certain position can be fixed at one specific position, thus improving convenience of operation.

Description

technical field [0001] The invention relates to a checking tool in mechanical processing, in particular to a D-shaped guide pin upper and lower positioning structure of the hole position checking tool for detecting the position degree of a product square or special-shaped hole on the checking tool. Background technique [0002] There will be many holes on the products we process, and the position accuracy requirements are relatively high, especially for some high-precision products, the position accuracy requirements of the holes are higher. Therefore, after the product is produced and before leaving the factory, it is necessary to use the inspection tool to detect its position. In the process of designing and manufacturing product inspection tools, when the holes of the inspection products are square or special-shaped holes, in order to facilitate alignment, the detection pins are generally designed to prevent rotation. However, such inspection tools are not very convenient...

AI Technical Summary

Problems solved by technology

In the process of designing and manufacturing product inspection tools, when the holes of the inspection products are square or special-shaped holes, in order to facilitate alignment, the detection pins are generally designed to prevent rotation. However, such inspection tools are not very convenient to use in actual inspections. Sometimes The detection pin needs to be fixed at a certain position for easy operation, but the current inspection tool can only be moved up and down, and cannot stay at a certain height

When it is necessary to realize that the D-shaped guide pin can not only move up and down but also be fixed at a certain position, it is difficult for the previous structure to meet this requirement

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