Screw thread go/no-go detection device and detection method

A detection device and detection method technology, applied in measuring devices, optical devices, instruments, etc., can solve the problem of low thread detection efficiency, achieve automatic image detection, and avoid manual detection errors

Active Publication Date: 2019-12-31
JIANGSU UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem of low thread detection efficiency in the prior art, the pres

Method used

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  • Screw thread go/no-go detection device and detection method
  • Screw thread go/no-go detection device and detection method

Examples

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Embodiment Construction

[0018] Such as figure 1 , a thread detection device, comprising a workbench 1, the workbench 1 is provided with a clamping mechanism for clamping the screw 8 to be tested, the workbench 1 is also provided with an X-direction main camera 2, an X-direction main camera 2 A first backlight board 3 is arranged on the opposite side, and a Y-direction auxiliary camera 4 is also arranged on the workbench 1 , and a second backlight board 5 is arranged on the opposite side of the Y-direction auxiliary camera 4 .

[0019] The clamping mechanism includes V-shaped clamping cylinders 6 on both sides, and the V-shaped clamping cylinders 6 are clamped on the optical axis of the screw 8 .

[0020] A proximity switch 7 is arranged next to the V-shaped clamping cylinder 6 .

[0021] A detection method of the above-mentioned thread on-off detection device, comprising the following steps:

[0022] Step 1: First, place the screw 8 in the middle of the V-shaped block of the V-shaped clamping cylin...

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Abstract

The invention relates to a screw detection device, in particular, a screw thread go/no-go detection device and detection method. The device comprises a workbench; the workbench is provided with a clamping mechanism used for clamping a to-be-tested screw; the workbench is also provided with an X-direction main camera; a first backlight plate is opposite to the X-direction main camera; the workbenchis further provided with a Y-direction auxiliary camera; and a second backlight plate is opposite to the Y-direction auxiliary camera. According to the screw thread go/no-go detection device and detection method of the invention, the X-direction camera and the Y-direction camera are adopted for obtaining and correcting parameters such as screw tooth shapes under a backlight condition, and the automatic image detection of screw threads is achieved.

Description

technical field [0001] The invention relates to a screw detection device, in particular to a thread pass-through detection device and a detection method. Background technique [0002] Screws are one of the six simple machines invented by human beings. They play an important role in the field of connector products and are often used for the installation of connection accessories and the fixing of cables. Screws have the advantages of easy assembly and easy disassembly, making them used in various fields. If the screw has problems such as no thread, cracking, and size out of tolerance, it will seriously affect the installation and use of the connector product. The current comprehensive detection method is based on the Taylor inclusion principle, using the through-end thread gauge to detect the rotatability of the thread, and using the stop thread The single-item manufacturing deviation is used in gauge testing; however, the single-item detection method is mainly used to analy...

Claims

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Application Information

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IPC IPC(8): G01B11/08G01B11/12
CPCG01B11/08G01B11/12
Inventor 杨龙兴顾杰宁杨浩轩张陈
Owner JIANGSU UNIV OF TECH
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