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Assembling method for crank-connecting rod assembly

A technology of crank connecting rod and assembly method, which is applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problem of crank press-loading load detection that cannot be installed in place first, and achieves the effect of convenient operation and improving the pass rate of the factory.

Inactive Publication Date: 2015-11-18
重庆建设·雅马哈摩托车有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of monitoring method can only determine whether the press-fit load of the crank that is installed last among the left and right cranks is qualified or not, but cannot detect the press-fit load of the crank that is installed first.

Method used

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  • Assembling method for crank-connecting rod assembly

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the crank connecting rod assembly assembly device adopted in the present invention and the accompanying drawings.

[0023] During specific implementation: if figure 1As shown, a crank connecting rod assembly assembly device includes a hydraulic press 1. The hydraulic press 1 is equipped with a pressure head 2, and the pressure head 2 is equipped with a load sensor 3; one side of the hydraulic press 1 is vertically A linear displacement sensor 4 is installed, and the slider part 41 of the linear displacement sensor 4 is rigidly fixedly connected with the pressure head 2 and can go up and down with the pressure head 2; the load sensor 3 and the linear displacement sensor 4 are electrically connected to a PLC control system 5; the PLC control system 5 is provided with an alarm device 6; the upper die 7 is fixedly installed below the pressure head 2, and a lower surface of the upper die 7 is...

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Abstract

The invention discloses an assembling method for a crank-connecting rod assembly. According to the method, an oil press, a pressure head, an upper mould and a lower mould are included, wherein the upper mould and the lower mould are fixedly installed on the oil press, the upper mould is used for positioning a left crank and the lower mould is used for positioning a right crank; the pressure head is provided with a load sensor, and a linear displacement sensor is connected with and installed on the pressure head; two positioning rods capable of sliding in the axial direction are arranged at the positions, corresponding to pin holes of the cranks, of the upper mould and the lower mould respectively in the axial direction; the end, away from the corresponding pin hole, of each positioning rod is provided with a position sensor; the distance between the position sensors and the end face where a crank pin is designed and installed is equal to the length of the positioning rods when the moulds are combined. The assembling method has the advantages that operation is convenient, press-fitting loads generated when the two ends of the crank pin are installed in place can be detected, and the ex factory pass rate can be increased.

Description

technical field [0001] The invention relates to the field of engine crank assembly, in particular to an assembly method of a crank connecting rod assembly. Background technique [0002] The crank connecting rod assembly is an important part of the two-wheeled motorcycle engine. Its function is to convert the reciprocating linear motion of the piston into the rotary motion of the crank and output torque outward. It is composed of left crank, right crank, crank pin, connecting rod and connecting rod bearing, among which the crank pin connects the left and right cranks through interference fit, and the characteristics of its products affect the performance of the engine. Once the interference fit between the crank pin and the crank is insufficient, the press-fit load of the crank pin and the crank will decrease, which will affect the life of the engine, cause abnormal noise, cylinder knocking, and crank looseness. There is a fatal safety hazard of sudden stop when the engine i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/027
CPCB23P19/027
Inventor 黄利声张君利杨施王永园
Owner 重庆建设·雅马哈摩托车有限公司
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