Device and method for measuring inclined hole position dimensions

Abstract

The invention discloses a device and method for measuring inclined hole position dimensions. The device comprises a positioning support component and an elastic measuring shaft and is used for measuring the inclined hole position dimensions LX and LY of a part. The method includes: placing a to-be-measured part on a flat plate, mounting the elastic measuring shaft at the vertical hole phi D1k of the part, mounting the positioning support component at the inclined hole phi Dxk of the part, allowing the positioning support component to rotate around the center of the inclined hole phi Dxk, recording the minimum deflection position, away from a zero position, of a dial indicator pointer, taking the deflection quantity of the minimum deflection position as the deviation value of the inclined hole position dimensions, and adding the deflection quantity of the dial indicator to the basic dimensions of the inclined hole position dimensions or subtracting the deflection quantity of the dial indicator from the basic dimensions of the inclined hole position dimensions to obtain the actual inclined hole position dimensions of the part. The device has is suitable for being used by inspectors on a production site, capable of measuring the inclined hole position dimensions under precision level IT7, simple to operate, fast and convenient in measuring and capable of being widely popularized and used.

Description

technical field [0001] The invention belongs to the technical field of measurement, in particular to a method for directly measuring the distance between the center point of an inclined hole and the plane or the center of the hole, and is suitable for mass production. Background technique [0002] Such as figure 1 As shown, it is a part diagram of the part to be tested, which includes a vertical hole and an inclined hole, and the position size of the inclined hole is the position dimension from the intersection point of the center line of the inclined hole and the end face of the hole to other surfaces (or hole centers). The position and size of the oblique hole involved in the product generally requires the accuracy of the position and size to be below IT9 level, and some require IT7 level. At present, the measurement of the position and size of inclined holes mainly includes three-coordinate measuring machine measurement, tool microscope measurement, and cylindrical indir...

AI Technical Summary

Problems solved by technology

[0003] Three-coordinate measuring machine measurement and tool microscope measurement are mainly used for random inspection of parts. They have high measurement accuracy and require professionals to measure. The measurement efficiency is low and the measurement cost is high. They are not suitable for measurement on the production site.

This measurement method has low efficiency and large measurement error. It is mainly used in the case of low precision and single-piece production. This measurement method requires high skill of the measurement personnel.

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