Three-line value detection tool

Abstract

The invention discloses a three-line value detection tool. The three-line value detection tool comprises a common normal line micrometer, holders and roller pins, wherein the holders are respectively arranged at work surfaces of two measurement ends of the common normal line micrometer, the holders are provided with dovetail grooves identical to the common normal line micrometer, the holders are provided with openings, the roller pins are inserted into the holders from one ends, elastic U-shaped separation blades are utilized to block the openings to prevent the roller pins from shedding from the holders, during measurement, two roller pins are mounted on the holder arranged on a fixed work surface of the common normal line micrometer, the roller pins are made to slide into work grooves of a to-be-detected screw, one roller pin is mounted on the holder arranged at a moving work surface of the common normal line micrometer, the roller pin is further made to slide into a work groove of the to-be-detected screw, measurement is carried out according to work principles of a micrometer, and a three-line value of the screw can be measured. The three-line value detection tool is advantaged in that operation is simple and rapid, processing cost is reduced, the measurement time is reduced, work efficiency is improved, wide application is realized, and the roller pins do not shed from the holders.

Description

technical field [0001] The invention belongs to the technical field of detection tooling, in particular to a three-line value detection tool suitable for screw processing. Background technique [0002] When the ball screw pair is working, the steel ball contacts the working groove of the screw to form rolling friction. The contact mode is Gothic curve contact; during the screw processing, especially the rolling screw, due to the limitation of the processing technology, it is easy to The working grooves of the screw at different positions are inconsistent, which is commonly known as the size of the head. Therefore, in the processing and inspection of the screw, it is necessary to check whether the screw has a small or small end. At present, the usual method is to cooperate with the standard nut and the screw. Walk from one end to the other to test the smoothness of the nut, but for mass-produced ball screws, this test method is too complicated; in fact, in the actual test, it...

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Problems solved by technology

[0002] When the ball screw pair is working, the steel ball contacts the working groove of the screw to form rolling friction. The contact mode is Gothic curve contact; during the screw processing, especially the rolling screw, due to the limitation of the processing technology, it is easy to The working grooves of the screw at different positions are inconsistent, which is commonly known as the size of the head. Therefore, in the processing and inspection of the screw, it is necessary to check whether the screw has a small or small end. At present, the usual method is to cooperate with the standard nut and the screw. Walk from one end to the other to test the smoothness of the nut, but for mass-produced ball screws, this test method is too complicated; in fact, in the actual test, it is only necessary to measure the diameter of the center of the ball after the ball and the screw groove are matched, that is, the three-line value , can quickly and easily check whether the screw has a large or small head, but because the diameter of the steel ball is too small, it is inconvenient to measure, and the needle with the same diameter as the steel ball is used as the simulated steel ball, and if it is measured with a public normal line micrometer, the needle cannot be measured during the measurement. Fixed, it still causes great inconvenience to the measurement and reduces work efficiency

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