Clamp special for eccentric crankshaft and method for using same

Abstract

The invention discloses a clamp special for an eccentric crankshaft and a method for using the same. The clamp comprises a claw disc fixed end, a shaft end fixing end, a shaft end fastening screw, a shaft end fixed sleeve, a sleeve fastening screw, a sleeve clamp nut, a positioning pin, an upper positioning plate, a lower positioning plate, a positioning slide block and a positioning plate fastening screw. The clamp is suitable for processing the eccentric shaft which has a plurality of eccentric shafts, an accordant eccentric distance, a circle center in a certain angle and low accuracy requirements. After a section of eccentric shaft is processed in a processing process, a workpiece needs to be detached and turned by a certain angle when another section of shaft with an opposite eccentric direction to that of the processed section of eccentric shaft so that the workpiece can be positioned through a shaft end fixing ring and the positioning pin. The clamp of the invention has the advantages of avoiding high technical level, along with simple processing, low cost, simple use and high processing efficiency on the premise of ensuring certain accuracy. The method for using the clamp is described by an example in which a central included angle is 180 degrees.

Description

Technical field [0001] The invention relates to a clamp, in particular to a special clamp for an eccentric crankshaft and a use method thereof. Background technique [0002] Three-jaw or four-jaw chucks are still commonly used in the existing machining of eccentric parts. Traditional machining methods are difficult to locate the eccentric shaft. Four-jaw chucks can be used for eccentric positioning, but the accuracy is difficult due to the need for two positioning. Guarantee. Special fixtures can be used, but the indexing head is prone to errors, so there are problems of high technical requirements, complicated operations, and low work efficiency. When machining multi-axis eccentric shafts, especially those with the same eccentricity, but the center of the circle is at a certain angle, the shaft needs to be turned over a certain angle to process another eccentric shaft. This requires positioning again, prolonging the processing time, reducing efficiency and accuracy It is diffi...

AI Technical Summary

Problems solved by technology

[0002] In the existing mechanical processing, three-jaw or four-jaw chucks are still commonly used when processing eccentric parts. The traditional processing method is difficult to locate the eccentric shaft. Four-jaw chucks can be used for eccentric positioning, but the accuracy is difficult due to the need for two positioning. ensure

Special fixtures can be used, but the indexing of the dividing head is prone to errors, so there are problems of high technical requirements, complicated operation and low work efficiency

When machining multi-axis eccentric shafts, especially those with the same eccentricity, but the center of the circle is at a certain angle, it is necessary to turn the shaft at a certain angle to process another section of eccentric shaft, which requires re-positioning, prolongs processing time, reduces efficiency, and improves accuracy. Difficult to guarantee

Although the traditional eccentric shaft fixture has strong versatility, the steps of use are complicated, the installation is complicated, and it is difficult to disassemble, which reduces the production efficiency and requires higher technical level of the operator.

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