Assembly component and assembly method for crankshaft timing gear

Abstract

The invention discloses an assembly component and an assembly method for a crankshaft timing gear. The assembly component comprises a guide shaft and a guide sleeve which is axially and glidingly sleeved on the guide shaft. The method comprises the following steps of: setting the assembly component consisting of the guide shaft and the guide sleeve, and setting a crankshaft and a timing gear according to the assembly component; arranging the timing gear on the guide sleeve of the assembly component; arranging the guide shaft on the small head of the crankshaft; and pressing the assembly component and the crankshaft timing gear into the small head of the crankshaft together by using a press so as to finish the assembly of the crankshaft timing gear. The assembly component and the assembly method can overcome the defects of high pressing difficulty, poor assembly stability, low precision and the like in the prior art to relieve the pressing difficulty and improve the assembly stability and the precision.

Description

technical field [0001] The invention relates to crankshaft timing gear assembly technology, in particular to a crankshaft timing gear assembly assembly and method. Background technique [0002] The assembly requirement between the crankshaft small end and the crankshaft timing gear of the earlier diesel engine is a transition fit, relying on the keyway on the crankshaft small end and the keyway on the crankshaft timing gear to transmit torque through the key. However, there are some defects in this structure, that is, processing a keyway on the relatively small crankshaft head will inevitably cause serious damage to the strength of the crankshaft head, so that the crankshaft head breaks and the like. [0003] At present, in order to overcome the above defects, the assembly between the crankshaft small end and the crankshaft timing gear is generally required to be an interference fit structure, thereby canceling the traditional method of key transmission torque, relying on th...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to propose a crankshaft timing gear assembly assembly for the defects of high difficulty in press-fitting, poor assembly stability and low precision in the prior art, so as to reduce the difficulty of press-fitting and improve the stability and precision of assembly

[0010] Further, another purpose of the present invention is to propose a crankshaft timing gear assembly method to reduce the difficulty of press-fitting and improve the assembly stability in view of the defects of high difficulty in press-fitting, poor assembly stability and low precision in the prior art sex and precision

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