General process code for turning:
1) in order to ensure the rigidity of turning, the diameter of the larger part and the smaller part of the rear diameter should be generally used to turn the step shaft.
2) the slot should be carried out before the finishing of the workpiece in order to prevent the deformation of the workpiece.
3) when turning the shaft with fine thread, the screw thread should be finished after the thread is machined.
4) the surface of the workpiece should be flat before drilling. Central holes should be used first if necessary.
5) when drilling a deep hole, the drill hole is usually drilled first.
6 (10) turning Phi Phi 20) mm hole, the cutter bar diameter should be 0.6 to 0.7 times the cutting diameter; diameter greater than 20 mm diameter machining hole, should generally be used knife rod clamping cutter head.
7) when turning multi thread or multi head worm, it is necessary to test the gear after adjusting the gear.
8) when using the automatic lathe, adjust the relative position of the tool and workpiece by adjusting the card of the machine. After adjusting, the machine should be tested and cut, the first piece can be processed, and the wear of the tool, the size of the workpiece and the roughness of the surface should be paid attention to at any time during the processing.
9) in the vertical lathe lathe, when the tool holder is adjusted, not move the beam freely.
10) when the surface of the workpiece has position tolerance requirements, as far as possible in the first clamping to complete the turning.
11) when turning cylindrical gear blank, the hole and datum end must be machined in one time clamping. When necessary, the marking line near the gear circle of the end face should be marked out.
