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Cross point welding sample multidirectional fatigue loading fixture

A technology of fatigue loading and fixture device, applied in the fields of automobile manufacturing and machinery, can solve the problem of no occurrence, and achieve the effect of easy operation, small space occupation, and neutrality assurance.

Inactive Publication Date: 2009-07-29
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The necessary fixtures for fatigue testing of spot welded joints under multi-directional cyclic loading have not yet appeared in China

Method used

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  • Cross point welding sample multidirectional fatigue loading fixture
  • Cross point welding sample multidirectional fatigue loading fixture
  • Cross point welding sample multidirectional fatigue loading fixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Combine below Figure 1 to Figure 5 Examples of the present invention will be described in detail.

[0022] This embodiment mainly includes an upper clamp body 8 and a lower clamp body 9, and the upper clamp body 8 and the lower clamp body 9 are two independent similar structures. Wherein, the lower clamp body 9 mainly includes a base 1, a trapezoidal block 5, a wedge-shaped clamping block 2, and a lock plate 7, and an "H"-shaped groove is arranged on the upper surface of the base 1, and the groove is opposite to the upper surface. The centerline of the surface is symmetrical, the trapezoidal block 5 and the wedge-shaped clamping block 2 are arranged in the groove, the centerline of the trapezoidal block 5 coincides with the centerline of the upper surface of the base 1, and a dovetail groove is arranged on the bottom surface of the trapezoidal block 5 . On the side of the base 1, along the axial direction with the trapezoidal block 5, there is a threaded transmission ...

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Abstract

This invention provides one crossing weld specimen multi-fatigue loading clamper device in the mechanic, auto process technique filed, which comprises the following parts: down clamper part 9 and upper clamper 8, wherein, the clamper 9 and the basic socket upper surface is set with gradient block sliding along the surface; the gradient block both sides are set with wedge clamping block sliding along the slope of the gradient block; the other surface of the wedge clamping block to take weld specimen; the down clamper 9 above part is similar to the upper clamper 8 and their difference lies in the following: the down clamper 9 lock panel 7 is located on the basic socket down surface and the upper clamper 8 lock panel 7 is located on the upper surface with loading holes.

Description

technical field [0001] The invention relates to a multi-directional fatigue loading fixture device for a cross-shaped spot welding sample, which is used for positioning and clamping a spot welding fatigue sample in a cross-shaped tension-shear multi-directional fatigue loading test, and belongs to the machinery and automobile manufacturing technology field. technical background [0002] Resistance spot welding has the advantages of low cost, high efficiency, and simple operation. It is very suitable for mass production and has been widely used in modern industry, especially in the automobile industry. As modern automobiles increasingly adopt thinner high-strength steel plates in the direction of high strength and reliability, light weight, and fuel saving, the stiffness of spot welded joints decreases due to the thinning of the plates, making them fatigue Reduced strength. Therefore, technicians should regard the fatigue performance of solder joints as an important paramet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/04
Inventor 尚德广李力森王瑞杰孙国芹贾冠华邓静
Owner BEIJING UNIV OF TECH
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