Adjustable simple clamping device and method for automobile connecting rod cracking groove machining

Abstract

The invention discloses an adjustable simple clamping device for automobile connecting rod cracking groove machining. The adjustable simple clamping device comprises a base, the top face of the base is connected with a guide rod seat and a connecting rod big-end hole positioning seat, and a connecting rod small-end hole positioning seat is arranged between the guide rod seat and the connecting rodbig-end hole positioning seat. The guide rod seat is connected with the connecting rod small-end hole positioning seat through a guide rod arranged horizontally, the middle of the guide rod is sleeved with a spring, one end of the spring props against the other side face of the guide rod seat, and the other end of the spring props against the side face of the connecting rod small-end hole positioning seat. The top face of the connecting rod small-end hole positioning seat is further connected with a connecting rod small-end hole positioning pin, the top face of the connecting rod big-end holepositioning seat is provided with a cambered surface positioning block with a cambered surface, the connecting rod small-end hole positioning pin is inserted into a connecting rod small-end hole, andthe cambered surface positioning block is inserted into a connecting rod big-end hole, and the outer hook face props against the inner wall face of the connecting rod big-end hole and clamps and positions a connecting rod. The invention further provides a method for using the adjustable simple clamping device for automobile connecting rod cracking groove machining, and the adjustable simple clamping device and method aim to improve the automobile connecting rod clamping precision and machining efficiency.

Description

technical field [0001] The invention relates to the technical field of clamping and positioning of connecting rod processing, in particular to a simple and adjustable clamping device and method for processing automobile connecting rod cracking grooves. Background technique [0002] The connecting rod is an important part of the engine, which connects the piston and the crankshaft, and transmits the force on the piston to the crankshaft, thereby converting the reciprocating motion of the piston into the rotational motion of the crankshaft. [0003] The connecting rod cracking processing technology is a manufacturing technology that breaks through the traditional processing concept with the development of the automobile industry in the past ten years. A cracking groove is processed at the predetermined split position of the connecting rod, and then a normal stress load perpendicular to the cracking groove is applied. , so that the connecting rod produces stress concentration a...

AI Technical Summary

Problems solved by technology

[0006] When EDM is used, the two-end positioning fixture is most commonly used. In the process of clamping the connecting rod, not only the workers are required to install the connecting rod to a fixed position skillfully and accurately, but also the relative diameter of the big end hole and the small end hole of the connecting rod is required. The position also has precision requirements. If the above-mentioned structural precision does not meet the predetermined requirements, it will be very difficult to clamp the connecting rod, or even impossible to clamp and process, which will reduce the processing efficiency.

In addition, every time a type of connecting rod is processed, the corresponding fixture needs to be replaced, which not only increases the time cost, but also doubles the cost of the fixture

After long-term use of the fixture, the clamping accuracy is reduced. If there is no corresponding adjustment device for error compensation, the clamping accuracy of the device will be reduced, affecting the positioning accuracy, and ultimately affecting the quality of cutting grooves and post-expansion breaking

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