The principle of determining the turning route of automobile parts processing is to ensure the machining quality, and the cutting route is short. During rough turning, the cutting route can be changed according to the cutting position. For example, when rough turning the outer circle, the cutting method of reducing the number of radial layers can be adopted, and the method of reducing the number of axial layers can be used when turning the end face; During finish turning, the machining accuracy of parts shall be ensured. The machining accuracy of parts is the accuracy after one-time machining.

The position of feed and withdrawal shall be considered clearly, and one-time processing shall be completed continuously at one time. The tool change position shall be outside the workpiece and fixture. When changing the tool, ensure to touch its components, and the tool change route shall be short. The tool withdrawal route shall be determined according to the machining position, and the oblique line tool withdrawal method can be used for the machining of the cylindrical surface; The cutting groove can be processed by radial axial tool withdrawal; The tool retraction of boring can adopt the axial radial tool retraction mode.

When threading in Dalian auto parts machining center, it is necessary to ensure that the feed along the pitch direction and the rotation of the machine tool spindle maintain a strict speed ratio, so avoid the acceleration or deceleration of the machine tool during machining. Turning is to change the shape and size of the blank on the lathe by using the rotary motion of the workpiece and the linear or curved motion of the tool, Process the to meet the requirements of the drawing.

Turning is a method of cutting the workpiece by using the rotation of the workpiece relative to the tool on the lathe. The cutting energy of turning is mainly provided by the workpiece rather than the tool. Turning is a basic and common cutting method, which plays a very important role in production. Turning is suitable for machining rotary surface. Most workpieces with rotary surface can be machined by turning method, such as inner and outer cylindrical surface, inner and outer conical surface, end face, groove, thread and rotary forming surface. The tools used are mainly turning tools.