Metal product thread detection device

Abstract

The invention relates to a metal product thread detection device, which comprises a locking protection mechanism, a mounting mechanism and a detection mechanism, the locking protection mechanism comprises a first locking protection part and a second locking protection part which can enter a combined or separated state, a first rotating shaft is formed on the first locking protection part, and the first rotating shaft is connected with a first bearing; the mounting mechanism comprises a thread gauge mounting sleeve, the thread gauge mounting sleeve comprises a sleeve main body, a second rotating shaft is formed on the sleeve main body, a second bearing is arranged on the second rotating shaft, and a first elastic reset piece is arranged between the second bearing and the second clamping protection part; and the detection mechanism comprises a thread gauge, and the thread gauge is connected with a sleeve body of the thread gauge installation sleeve. The device can detect the number of turns of threads, can also detect the size of the threads, and is diversified in function. And a clamping protection mechanism is arranged, so that two clamping protection parts can be separated to form protection when a product with the number of thread turns lacked is encountered.

Description

technical field [0001] The invention relates to a device for detecting the number of turns of internal threads on a metal product and detecting whether the thread is on or off, in particular to a device for detecting the thread of a metal product. Background technique [0002] In the 3C industry, it is often necessary to tap internal threads on metal products; the processing of internal threads on metal products involves cutting out internal threads in pre-processed round holes through taps; in this processing method, the following situations will occur: 1. The front end of the tap Because of wear and tear, the thread processed by the front end of the tap is not actually processed in place, and the number of internal threads processed at this time is relatively small; 2. The size of the tap is small due to wear or processing error of the tap, and it is processed at this time. 3. For metal materials with poor processing performance, in order to ensure the integrity of the int...

AI Technical Summary

Problems solved by technology

[0004] According to the illustration of the thread of the product under test, if the number of turns of the rotating thread is greater than the number of turns indicated in the illustration of the thread, it is judged to be qualified, and it cannot be rotated forcibly, otherwise it is a substandard product; After alignment, it is qualified if the screw-in thread length is stopped within 2 pitches, and it is not allowed to rotate forcibly, otherwise it will be judged as a substandard product. When there is an illustration of the product under test, it should be judged according to the illustration; The detection depends on the operator's method. For the same operator, the rotation force of the screw gauge or the product under test is different each time, and there are errors in the detection results; when using the general gauge to rotate, the operator needs to remember the number of turns. For long-term operations, it is easy to cause counting errors due to operator fatigue; in addition, due to changes in operators, the operator's operating methods need an adaptation period after training. During this period, there are errors in product testing.

[0005] The process of machine vision to detect the number of thread turns is to collect images→image preprocessing→contour matching→position correction→thread detection→data judgment→numerical display; Due to the detection principle and thread shape, it can only be used to detect whether the number of thread turns is correct or not, and cannot detect whether the thread size is correct.

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