Gauge used for measuring inner groove diameter of elongated hole

Abstract

The invention relates to a gauge used for measuring the inner groove diameter of an elongated hole, which comprises a caliper gauge, a dial indictor, an adjustment lever and a spring, wherein the caliper gauge is of a pincer-shaped structure and formed by hinging two measuring rods, one of the measuring rods of the caliper gauge is fixedly provided with the dial indicator, the other measuring rod is fixedly provided with the adjustment lever, the adjustment lever corresponds to the dial indicator in position, the length of the adjustment lever relative to the measuring rods can be adjusted, and measuring ends of the two measuring rods are connected through the spring. The gauge provided by the invention is simple in structure, convenient to use, convenient for measurement at any time in processing at the production field, can improve the processing quality and reduce the processing rejection rate, and has the characteristics of high detection efficiency and high universality.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a detection tool for measuring the diameter of an undercut in a slender hole. Background technique [0002] When processing the main shaft of a desktop drilling machine, it is necessary to process an undercut at the end of the inner taper hole of the main shaft. If the diameter is too small, the front end of the grinding wheel for grinding the inner taper hole may hit the bottom, affecting the machining accuracy of the inner taper hole, and prone to dangerous machining accidents. Since the inner taper hole of the main shaft is relatively slender and the minimum diameter of the small end is small, the size control of the turning undercut can only be controlled by the small tool rest and the tool of the lathe, so the actual size processed is not stable, and because the inner taper hole is smaller The smaller the inner dimension, the diameter of the undercut cannot be measured wi...

AI Technical Summary

Problems solved by technology

[0002] When processing the main shaft of a desktop drilling machine, it is necessary to process an undercut at the end of the inner taper hole of the main shaft. This undercut is mainly used for grinding the subsequent inner taper. If the diameter of the inner taper hole is too small, the front end of the grinding wheel for grinding the inner taper hole may hit the bottom, affecting the machining accuracy of the inner taper hole, and prone to dangerous machining accidents

Since the inner taper hole of the main shaft is relatively slender and the minimum diameter of the small end is small, the size control of the turning undercut can only be controlled by the small tool rest and the tool of the lathe, so the actual size processed is unstable, and because the inner taper hole is smaller The smaller the inner dimension, so the diameter of the undercut cannot be measured with ordinary inspection tools

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