Non-standard machining after roughing and before finishing, low temperature annealing or aging process should also be organized to internal stress. Choose equipment wisely. Roughing is mainly to cut off most of the processing allowance, does not require a high processing accuracy, so roughing should be carried out on the machine tool with large power and not too high precision, and the finishing process requires a more high-precision machine tool processing. Rough and finish machining are processed on different machine tools, which can not only exert the equipment talent, but also extend the use of fine machine tools.

Easy to use, reduce walking back and forth, and prevent unnecessary bending and tiptoe movements. Accurate and reliable positioning, to prevent a slight vibration will produce misoperation. The direction of movement of the parts used in non-standard machining and the direction of movement of the parts used should comply with the regulations, and there are simple symbols. Install the necessary interlock organization to prevent the use of parts to produce uncoordinated action, and the use of multiple people when uncoordinated incidents. The structure and arrangement orientation of the handle, handwheel and button shall comply with the regulations. The starting button should be installed in the housing or equipped with a protection ring to prevent accidental touching.

The handwheel and handle installed on the shaft will rotate with the shaft and hurt people during the automatic feed, so the automatic ejection device should be installed. In each mechanical processing plant has its own technical points, that is, each has its own manual, machining refers to the use of traditional machining methods, according to the drawing pattern and scale, so that the shape, scale, relative orientation and nature of the blank become qualified parts of the whole process, processing is the workers need to do before processing operations, Prevent processing errors in the processing process, resulting in economic losses.

In the non-standard machining route, the heat treatment process is often organized. The organization of the orientation of the heat treatment process is as follows: In order to improve the cutting function of the metal, such as annealing, normalizing, tempering, etc., the general organization is carried out before mechanical processing. For internal stress, such as aging treatment, tempering treatment, etc., the general organization is carried out after roughing and before finishing. In order to improve the mechanical function of parts, such as carburizing, quenching, tempering, etc.

General organization is carried out after machining. If there is a large deformation after heat treatment, the processing process must be organized. In order to ensure machining accuracy, rough and finish machining are carried out separately. Because of rough machining, the cutting amount is large, the workpiece is subjected to cutting force, clamping force, heat, and the processing surface has a more significant work hardening phenomenon, there is a large internal stress inside the workpiece, if the rough and rough machining is carried out, the precision of the parts after finishing will be quickly lost because of the re-distribution of stress. For some parts requiring high machining accuracy.