Tensile strength test clamp of automatic positioning screw

A tensile strength, automatic positioning technology, applied in the mechanical field, can solve the problems of high thread tripping risk, inconvenient use and operation, inaccurate test results, etc., and achieve the effect of shortening the test period, convenient use and operation, and high test accuracy.

Active Publication Date: 2013-05-08
常州华厦建设工程质量检测有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above scheme still has defects such as inconvenient use and operation, the need to replace the fixture according to the size of the test piece, the risk of thread tripping, and inaccurate test results.

Method used

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  • Tensile strength test clamp of automatic positioning screw
  • Tensile strength test clamp of automatic positioning screw
  • Tensile strength test clamp of automatic positioning screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Such as Figure 1-3 As shown, the automatic positioning screw tensile strength test fixture includes a first connector 1 and a second connector 2, and the first connector 1 is provided with a mounting seat 4 for positioning the head of the screw 3 to be tested. Two connectors 2 are provided with a pull rod 5, and an adjustable clamping mechanism 6 for positioning the nail portion of the screw 3 to be tested is arranged between the mount 4 and the pull rod 5, and when the pull rod 5 moves axially away from the mount 4, the pull rod 5 can drive the adjustable clamping mechanism 6 to lock and position the nail portion of the screw 3 to be tested. The adjustable clamping mechanism 6 can be adjusted according to the size and specification of the screw 3 to be tested, and there is no need to replace the clamping mechanism, which shortens the test period and improves the test accuracy.

[0022] As a more optimized technical solution, in this embodiment, the adjustable clampin...

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PUM

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Abstract

The invention belongs to the technical field of machinery, relates to a test clamp, and particularly relates to a tensile strength test clamp of an automatic positioning screw. The problems that the existing test clamp is inconvenient to use and operate; the clamp needs to be replaced according to the size of a test specimen, and the test accuracy is low are solved. The tensile strength test clamp of the automatic positioning screw comprises a first connector and a second connector; a mounting seat for positioning the head part of a bolt to be tested is arranged on the first connector; a draw bar is arranged on the second connector; an adjustable clamping mechanism for positioning the nail part of the bolt to be tested is arranged between the mounting seat and the draw bar; and the adjustable clamping mechanism can be driven to lock and position the nail part of the bolt to be tested when the draw bar axially moves far away from the mounting seat. The tensile strength test clamp of the automatic positioning screw has the advantages of being reasonable in design, simple in structure, convenient to use and operate, high in test accuracy, and free of replacement of the clamping mechanism; the test cycle is shortened; and the thread stripping risk is also reduced.

Description

technical field [0001] The invention belongs to the technical field of machinery and relates to a test fixture, in particular to an automatic positioning screw tensile strength test fixture. Background technique [0002] With the continuous development of machinery in the direction of miniaturization, high speed, and heavy load, screws with threaded fasteners on the head, as key components in mechanical components, are also continuously developing in the direction of small size and high strength. However, frequent fractures also follow. How to accurately and quickly determine the mechanical properties of screws and the cause of fracture failure is particularly important for improving the service life and reliability of mechanical assemblies. In the analysis of screw fracture, how to obtain a clean and non-deformed fracture is the most basic and important link in the process of bolt fracture failure analysis. The national standard does not specify the special fixture for the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/04
Inventor 姚国平景国元刘晶韦华
Owner 常州华厦建设工程质量检测有限公司
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