Tooth wheel groove screw bolt pulling and twisting characteristic detection method and special-purpose wrench
A detection method, gear groove technology, applied in the direction of measuring torque/torsional force, measuring device, testing of mechanical parts, etc. during tightening, can solve problems such as gear groove bolt thread damage, to avoid wear, reliable clamping, and detection results reliable and accurate results
Inactive Publication Date: 2017-02-15
河南航天精工制造有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a method for detecting the screwing characteristics of gear groove bolts, so as to solve the problem in the prior art that the thread of the gear groove bolts is damaged when the loading torque has not reached the standard requirement; the purpose of the present invention is also to provide a A wrench dedicated to the implementation of the above-mentioned detection method for the wrenching characteristics of gear groove bolts
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[0025] An embodiment of a special wrench used to implement the detection method for the wrenching characteristics of gear groove bolts Figure 1~Figure 6 As shown, it includes a matching part at the front end for fit-fitting with the gear groove 13 on the gear groove bolt 1 and a wrench part 22 at the rear end integrally connected with the matching part. The body of the body has six matching teeth 21 for matching and inserting into the gear groove 13 evenly distributed on the outer peripheral surface of the body, and there are tooth grooves 25 between adjacent matching teeth 21 .
[0026] The matching part and the wrench part 22 are made of high-strength mold steel, and the inside is a solid structure. This arrangement ensures the strength of the special wrench 2, improves the deformation resistance of the special wrench 2, and makes the special wrench 2 fit the gear groove bolt. 1 After the embedded fit, it can withstand a large wrenching torque without deformation, which mee...
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The invention provides a tooth wheel groove screw bolt pulling and twisting characteristic detection method and a special-purpose wrench. The detection method comprises the following steps: (1) clamping faces are processed on a screw thread segment of a tooth wheel groove screw bolt; (2), the tooth wheel groove screw bolt and the special-purpose wrench are respectively clamped on a clamping end of a torsion test machine, and the tooth wheel groove screw bolt and the special-purpose wrench are enabled to cooperate with each other and prevented from relative torsion; (3), the torsion test machine is started, a clamping end of the special-purpose wrench is enabled to apply a torsion moment at a certain speed till a required standard value is reached, and whether the tooth wheel groove is deformed or damaged is observed. The beneficial effects of the tooth wheel groove screw bolt pulling and twisting characteristic detection method and the special-purpose wrench are that the clamping faces of the tooth wheel groove screw bolt are directly and tightly clamped, a high requirement test on pulling and twisting characteristics is no longer dependent on screw thread strength, reliable clamping can be realized, good clamping effects can be fulfilled, a large torsion moment can be born, clamping gaps can be prevented via direct clamping operation, and smooth operation of large-sized and high-torque product pulling and twisting characteristic detection and reliable and accurate detection results can be effectively ensured.
Description
technical field [0001] The invention relates to a method for detecting the wrenching characteristics of gear groove bolts and a special wrench. Background technique [0002] The gear groove bolt is a fastening connection that is widely used in the aviation and aerospace fields. It has the characteristics of large wrenching torque and strong anti-loosening ability. Therefore, the requirement for the wrenching torque of the gear groove is very high. The detection of screwing characteristics is the key to check whether the performance of gear groove bolts is qualified or not. [0003] At present, the common test and detection method is to assemble the hexagonal nut to the threaded part of the gear groove bolt, and then respectively clamp the hexagonal nut and the wrench tooling to the two ends of the microcomputer-controlled torsion testing machine with a sleeve. This kind of test method can be realized for products with small specifications and low torque, but it has higher r...
Claims
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IPC IPC(8): G01L5/24G01M13/00
CPCG01L5/24G01M13/00
Inventor 张晶胡庆宽石大鹏沈鹏李旭健张钦莹赵文龙
Owner 河南航天精工制造有限公司