Tool for detecting welding strength of projection welding nut
A technology of projection welding nuts and welding strength, which is applied in the direction of applying stable torsion to test the strength of materials, etc., which can solve the problems that the welding strength of projection welding nuts cannot meet the design requirements and make evaluations
Active Publication Date: 2017-04-05
CHERY AUTOMOBILE CO LTD
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Problems solved by technology
[0004] In order to solve the problem that there is no device in the prior art that can be used to detect the welding strength of projection welding nuts, resulting in the inability to evaluate whether the welding strength of projection welding nuts can meet the design requirements in automobile production, the embodiment of the present invention provides A welding strength testing tool for projection welding nuts
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[0038] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0039] Such as figure 1 As shown, the embodiment of the present invention provides a projection welding nut welding strength testing tool, the projection welding nut welding strength testing tool includes: a torque wrench 1, an adapter sleeve 2 and at least one first limiter 4;
[0040] Such as figure 2 As shown, the torque wrench 1 includes a torsion arm 11 and a connector 12, and one end of the torsion arm 11 is fixedly provided with a torque display part 13, and the torque display part 13 is used to display the magnitude of the torque received by the projection welding nut 3 to be tested. It is fixed at the other end of the torsion arm 11, forming an L-shaped structure with the torsion arm 11, and at least one first limiting groov...
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The invention discloses a tool for detecting welding strength of a projection welding nut and belongs to the technical field of vehicle body part detection. The tool for detecting welding strength of a projection welding nut to be detected comprises a torque wrench, an adapter sleeve and at least one first limiting body. A nut connection hole and a first wrench connection hole are respectively arranged at both ends of the adapter sleeve. The inner wall of the nut connection hole forms a plurality of bosses for clamping the projection welding nut to be detected. Any two adjacent bosses form a groove for containing a joint raised point formed from the outer part of the projection welding nut to be detected. The adapter sleeve sleeves the projection welding nut to be detected through the nut connection hole. The adapter sleeve is fixedly connected to the torque wrench through the first wrench connection hole so that when the torque wrench applies a torque to the projection welding nut to be detected through the torque wrench, a torque display part on a torque arm of the torque wrench displays the torque on the projection welding nut to be detected and thus it is evaluated whether the welding strength of the projection welding nut to be detected satisfies the design requirement.
Description
technical field [0001] The invention relates to the technical field of testing body parts, in particular to a welding strength testing tool for projection welding nuts. Background technique [0002] In the automobile welding process, the projection welding nut is formed by welding the nut on the vehicle body steel plate by a projection welding machine, which is used to assemble and fix the parts on the vehicle body. When the parts on the body assembled and fixed by projection welding nuts are parts that affect the safety of the body, it is necessary to investigate the welding strength of projection welding nuts to ensure that the torsional characteristics of the joint bumps formed outside the projection welding nuts can meet the requirements. The parts on the vehicle body will not cause the projection welding nut to fall off due to the torque generated by the parts on the vehicle body to the projection welding nut, thereby ensuring the safety of the vehicle body. [0003] D...
Claims
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Inventor 方友震李创陈光跃
Owner CHERY AUTOMOBILE CO LTD