Hydraulic torque converter bolt tightening mistake-proofing method

A technology for torque converters and bolts, applied in the directions of bolts, threaded fasteners, screws, etc., can solve the problems of human-machine damage, fatigue of arms, shoulders and knuckles, etc., to improve stability, facilitate torque and angle, The effect of easy and precise monitoring

Active Publication Date: 2021-03-09
SAIC-GM-WULING AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 3) The operator needs to manually rotate the crankshaft with bare hands through a wrench, and needs to continuously bend and extend the arm to rotate the crankshaft at high frequency, which will easily cause fatigue of the arms, shoulders and knuckles, resulting in cumulative human-machine damage

Method used

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  • Hydraulic torque converter bolt tightening mistake-proofing method
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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] The error-proofing method for torque converter bolt tightening provided by the invention is suitable for engines with hydraulic torque converter bolts, such as some CVT engines. The engine includes a flywheel and a crankshaft. The bolts of the torque converter are located on the flywheel. Turn the bolts on the flywheel into the positioning holes to tighten the bolts. Such as figure 1 In the schematic diagram shown, 1, 2, 3, and 4 are the torque...

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Abstract

The invention discloses a hydraulic torque converter bolt tightening mistake-proofing method, which comprises the steps that when a vehicle enters a station, a scanning gun on an electric gun is usedfor identifying a vehicle model and selecting a mistake-proofing program matched with the vehicle model; a flywheel is provided with a preset tooling in a sleeved mode, the preset tooling is used fordriving the flywheel to rotate, and the preset tooling can be driven by the electric gun to rotate; according to the mistake-proofing program, after the electric gun is used for applying preset torsion to a hydraulic torque converter bolt in a positioning hole, the preset tooling is rotated to a preset angle, and the flywheel is driven to rotate till the next hydraulic torque converter bolt is accurately rotated into the positioning hole; the preset tooling is rotated according to a diagonal direction sequence, all the hydraulic torque converter bolts are rotated into the positioning holes, and the preset torsion is applied; and if all the hydraulic torque converter bolts are tightened to be qualified, the next vehicle operation is started. According to the technical scheme, the mandatoryprocess requirement in the assembly process standard is met, the influence of an existing method on the service life of a CVT is reduced, and the quality output stability is improved.

Description

technical field [0001] The invention relates to the technical field of automobile assembly, in particular to a method for preventing mistakes in tightening bolts of a hydraulic torque converter. Background technique [0002] At present, some CVT (continuously variable speed) models on the assembly line are hydraulic torque converter bolts. The existing method of tightening the CVT hydraulic torque converter bolts is to use a wrench to manually rotate the crankshaft, and turn the 4 bolts into the process holes in turn. Disadvantages of the method include: [0003] 1) Rotate the crankshaft manually with a wrench, and visually judge the tightening sequence, there is a risk of disordered sequence, heavy tightening and missing tightening; [0004] 2) During the process of driving the flywheel to rotate by rotating the crankshaft, due to the blocking force and inertia, the flywheel will rebound or move forward; [0005] 3) The operator needs to manually rotate the crankshaft wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/00B23P19/06
CPCF16B39/00B23P19/06
Inventor 黄裕锟黄威高丰
Owner SAIC-GM-WULING AUTOMOBILE CO LTD
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