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Piston rod clamping scheme determining factors
Jan 11, 2019

In the roughing process of the piston rod, the fixture used will affect the final processing quality. Therefore, when determining the clamping scheme, the design basis, the process benchmark and the programming calculation benchmark should be unified as much as possible. The process is concentrated to reduce the number of clamping operations, and as far as possible, all the surfaces to be processed can be processed after one clamping.

 

Since the machining accuracy at both ends of the piston rod must be taken into account at the same time, it is impossible to process all the surfaces to be processed at one time by clamping, and only one end can be completed before the other end can be made. Moreover, it is necessary to avoid the use of a clamping scheme with a long manual adjustment time, and a three-jaw chuck can be used for clamping. The point of application of the clamping force should fall on the part where the workpiece is rigid.

 

That is to say, in the rough processing stage of the piston rod, the clamp can be clamped to the place where the two ends are not entered, because the shape of the blank needs to be first obtained at this time, but when it comes to the finishing car, it is necessary to clamp the middle φ50. In the segment, the force is about the same. When grinding and rough grinding, the top clamp is needed. When the car is finished, it is still sandwiched in the middle to maintain the force. The final grinding is also based on the top clamp./www.xhychromerod.com