Most of the use of the chrome plated rod needs to bear the alternating load, and the device reciprocally rubs the surface thereof, so the surface must meet the requirements of high hardness and wear resistance. In selecting the positioning reference, in order to effectively ensure the coaxiality tolerance of the parts and the mutual positional accuracy of each part, all the machining processes can be positioned with two center holes, and the bucket elevator conforms to the principle of standardization.
In order to ensure the machining accuracy, the roughing and finishing vehicles should be separated when turning the piston rod. Moreover, the coarse and fine cars are always used with the tool holder to reduce the deformation of the workpiece during machining, and the center frame should be remembered when machining the threads at both ends. The center hole should be repaired during processing, to ensure the cleaning of the center hole and the center hole and tightness, and to ensure good lubrication.