How to operate the piston rod better?

How to run the piston rod better in daily production? This issue is something that operators should pay attention to, but it is useless to pursue it blindly. Instead, it must be introduced through the guidance of professionals. Below are several specific requirements for the piston rod that we have compiled from the information we collected from professionals. For your reference.
1. In normal use, the piston rod is subjected to alternating loads, and the device rubs its surface back and forth, so it requires high hardness and wear resistance.
2. The structure of the piston rod is relatively simple, but the length-to-diameter ratio is large. It is a slender shaft part with poor rigidity. In order to ensure the processing accuracy, rough turning and finishing turning must be separated during turning, and both rough turning and finishing turning should use the same Tool rest to reduce the deformation of the workpiece during processing. Use a center rest when processing threads at both ends.
3. When selecting the positioning datum, in order to ensure the coaxiality tolerance of the parts and the mutual position accuracy of each part, all processing procedures use two center holes for positioning, which is in line with the principle of unified datum.
4. When grinding the outer circular surface, the workpiece is prone to deflection and elastic deformation, which affects the accuracy of the piston rod. Therefore, during processing, the center hole should be repaired and kept clean. The tightness between the center hole and the tip should be appropriate and good lubrication should be ensured. The general selection of grinding wheels is: abrasive white corundum (WA), particle size 60#, medium hardness or medium or ceramic bond. In addition, the width of the grinding wheel should be narrower to reduce the radial grinding force. Pay attention to the selection of grinding amount during processing. In particular, the grinding depth should be small.
5. When grinding the outer circle and 1:20 taper, the two processes must be carried out separately. When grinding the 1:20 taper, the test piece must be ground first, and the workpiece can be officially ground only after checking that the test piece is qualified.
6. In order to ensure the stability of the piston rod processing accuracy, manual alignment is not allowed during the entire processing process.