Auxiliary positioning device for metallographic cutting of outer star wheel fairway

Abstract

The invention provides a besides-star wheel fairway metallographic cutting auxiliary positioning device which comprises a positioning seat connected with a cutting machine, a rotating disk and a wedge-shaped pressing block, wherein the positioning seat is a wedge-shaped block with different thicknesses on two sides; a rectangular gap is formed in the top of the positioning seat; the two inner side surfaces of the rectangular gap are used as reference surfaces for besides-star wheel fairway cutting; a supporting block for supporting a besides-star wheel is arranged at the bottom of the positioning seat; the rotating disk is arranged on the positioning seat in a rotatable manner and is positioned above the supporting block; the rotating center line of the rotating disk is overlapped with the center line of the positioned besides-star wheel; a trapezoid opening slot and two spherical positioning finger positioned on the same circumference are arranged on the rotating disk; the spherical positioning finger is inserted into a fairway of the besides-star wheel so as to position the besides-star wheel; the wedge-shaped pressing block is clamped on the cutting machine and is matched with the positioning seat so as to clamp the besides-star wheel; during positioning cutting of the besides-star wheel, the rotating disk is fixedly positioned, and the state is that one of the inner side surfaces of the trapezoid opening slot is parallel to the inner side surface of the rectangular gap, so that the center line of the fairway to be cut of the besides-star wheel is overlapped with one of the inner side surfaces of the rectangular gap. The besides-star wheel fairway metallographic cutting auxiliary positioning device is simple in structure and convenient for auxiliary besides-star wheel positioning and is high in positioning precision, and the cutting efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of production and manufacture of outer planetary wheels, in particular to an auxiliary positioning device for metallographic cutting of outer planetary wheel fairways. Background technique [0002] A constant velocity universal joint is a universal joint in which the rotating speed (angular velocity) of the driving shaft and the driven shaft are equal, that is, a mechanism that connects two shafts whose axes do not coincide and makes the two shafts transmit motion at the same angular velocity. The constant velocity universal joint is an important part in the transmission system of a car. On a front-wheel drive car, the front axle is equipped with a constant velocity universal joint drive shaft. The function of the constant velocity universal joint is to transmit the power of the engine from the transmission to the driving wheel of the car to meet the requirements of the outer end angle of the car transmissio...

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an auxiliary positioning device for metallographic cutting of the outer star wheel track, which is used to solve the problem that the outer star wheel cannot be accurately positioned in order to obtain metallographic analysis samples in the prior art. question

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