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Tightening and positioning tooling of crankshaft pulley of engine

A crankshaft pulley and positioning tooling technology, applied in the direction of workpiece clamping devices, manufacturing tools, etc., can solve the problems of large torque and difficult positioning, and achieve the effects of eliminating easy breakage, reducing costs, and improving the quality level of after-sales service

Inactive Publication Date: 2013-08-14
SAIC-GM-WULING AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical solution of the present invention is to provide an engine crankshaft pulley tightening and positioning tool for the deficiencies of the prior art, which effectively solves the difficult positioning problem caused by the large torque of the crankshaft pulley tightening

Method used

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  • Tightening and positioning tooling of crankshaft pulley of engine
  • Tightening and positioning tooling of crankshaft pulley of engine

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Embodiment Construction

[0022] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0023] The engine crankshaft pulley tightening and positioning frock according to the present invention comprises an L-shaped stop bracket 5, a free part of the frock, and a magnet installed on the L-shaped stop bracket 5 and the free part of the frock; the frock is free Part of the circular surface is provided with a magnet mounting hole 2, the edge of the circular surface is provided with a limiting edge 1 protruding to one side, this side is also provided with a positioning pin 3, and the other side of the circular surface is provided with a limiting horn 4; The vertical surface of the L-shaped limit bracket 5 is provided with a magnet mounting hole 2 and a horn-shaped limit hole for holding the limit horn 4, and the L-shaped limit bracket 5 A bolt hole 6 connected to the front end of the electric gun bracket is provided on the horizontal plane.

[0024] The l...

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Abstract

A tightening and positioning tooling of a crankshaft pulley of an engine comprises an L-shaped limiting support, a tooling free portion and magnets. The magnets are arranged on the L-shaped limiting support and the tooling free portion; a toroidal surface of the tooling free portion is provided with magnet installing holes; the edge of the toroidal surface is provided with limiting sides protruding towards one side which is provided with positioning pins; the other side of the toroidal surface is provided with limiting claws; a vertical surface of the L-shaped limiting support is provided with the magnet installing holes and claw-shaped limiting holes; the claw-shaped limiting holes are used for placing the limiting claws; a horizontal surface of the L-shaped limiting support is provided with a blot hole which is connected with the front end of an electric gun support; and the magnets are embedded in the magnet installing holes in an interference matching mode. The tightening and positioning tooling of the crankshaft pulley of the engine has the advantages of effectively solving the original problem that different degrees of damages are caused to a flywheel threaded hole due to the fact that the flywheel threaded hole of a large end face of a crankshaft is utilized to perform positioning, substantially reducing costs and stop-line time and improving the level of on-line quality control.

Description

technical field [0001] The invention relates to an engine crankshaft pulley tightening and positioning tool. Background technique [0002] The crankshaft pulley is a part of the engine, and it is fastened to the front end of the crankshaft by bolts. When the electric gun is tightened, the dynamic torque is 95N.M+ (55°±4), and the static torque even reaches 200N.M for the B15 model. [0003] During the assembly process, because the crankshaft pulley is connected to the crankshaft, the pulley is easy to "follow" when tightening. The torque of the B15 model is particularly large when tightening. The current assembly method is to tighten the bracket with an electric gun. The "locating pin" is inserted into the positioning threaded hole of the flywheel on the large end face of the crankshaft. When tightening, the copper "locating pin" is stuck to the limit; but the strong impact force at the end of tightening often causes damage to the threaded hole of the flywheel; Under the im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B11/02
Inventor 袁震
Owner SAIC-GM-WULING AUTOMOBILE CO LTD
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