Automatic detection method and device for thread plug gauge

Abstract

The invention discloses an automatic detection method and device for a thread plug gage. A main control machine controls a thread plug gage clamping device to clamp and fix the thread plug gage and controls a three-needle placement device to insert and fix three needles meeting the standards into a groove in the thread plug gage; the main control machine controls an automatic measurement device to measure the maximum distance of the outlines of the three needles and displays the measurement result on the automatic measurement device. The automatic detection method and device for the thread plug gage is exquisite in design and easy to operate. Through effective matching of all the components, under the control of the control device, the test work can be automatically carried out, operators do not need to carry out specific measurement work, the requirements for the operators are largely lowered, the application range is wider, and the detection efficiency is largely improved. Meanwhile, it is guaranteed that the integrating degree of the three needles and the thread plug gage meets the requirement, errors possibly caused by manual measurement are avoided, and the test accuracy is improved to the maximum extent.

Description

technical field [0001] The invention relates to an automatic detection method and device, in particular to an automatic detection method and device for thread plug gauges. Background technique [0002] Thread plug gauge is a tool for measuring the correctness of internal thread size. The types of thread plug gauges can be divided into three types: ordinary coarse thread, fine thread and pipe thread, among which the pitch is 0.35mm or less and the precision is 2nd level or higher than 2nd level. The threaded plug gauges and the threaded plug gauges with a pitch of 0.8 mm or less have no end-stop probe, the threaded plug gauges below 100 mm are tapered shank threaded plug gauges, and the threaded plug gauges above 100 mm are double-handled threaded plugs regulation. [0003] The thread plug gauge simulates the largest solid profile of the measured thread, and is used to check whether the effective pitch diameter of the measured thread exceeds the pitch diameter of the largest...

AI Technical Summary

Problems solved by technology

[0005] When using the three-pin measurement method to test the threaded plug gauge, it is often necessary to hold the verified plug gauge with one hand and three needles at the same time, and the five fingers must be coordinated; the other hand holds the measuring device, which is very inconvenient for verification and measurement; During the verification process, because one hand needs to hold the plug gauge and three needles at the same time, the three contact points between the standard verification device and the threaded plug gauge mouth are poorly contacted, which makes the fit between the two poor. It will cause certain errors in the final test results, and the acquisition of the best fit often requires the operator to have skilled operating skills and experience, so it puts great demands on the operator, and even experienced operators cannot guarantee every time Measuring the accuracy of the fit between the selected three needles and the threaded plug gauge teeth can easily cause human error in the test. Therefore, there is an urgent need for a threaded plug gauge detection device that is easy to operate, does not rely on the operator's operating experience, and can ensure measurement accuracy. and method

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