When rough turning, it is necessary to choose tools with high strength and good durability to meet the requirements of large back cutting and large feed during rough turning.

When precision turning, it is necessary to choose tools with high accuracy and good durability to ensure the requirements of machining accuracy.

3. In order to reduce tool change time and facilitate tool alignment, machine clamp knives and machine clamp blades should be used as much as possible.

Reasonable selection of fixtures

1. Try to use universal fixtures to clamp the workpiece and avoid using specialized fixtures;

2. The positioning reference of the parts overlaps to reduce positioning errors.

Determine the processing route

The machining route refers to the trajectory and direction of the tool relative to the part during the machining process of a CNC machine tool.

1. It should be able to ensure machining accuracy and surface roughness requirements;

2. The processing route should be shortened as much as possible to reduce the tool idle travel time.

The Relationship between Processing Route and Processing Allowance

At present, when CNC lathes have not yet reached widespread use, it is generally necessary to arrange excessive allowances on the blank, especially those containing forged or cast hard skin layers, for processing on ordinary lathes. If it is necessary to use a CNC lathe for machining, it is necessary to pay attention to the flexible arrangement of the program.

Key points for fixture installation

At present, the connection between the hydraulic chuck and the hydraulic clamping cylinder is achieved by a pull rod. The key points for clamping the hydraulic chuck are as follows: first, use a handle to remove the nut on the hydraulic cylinder, remove the pull tube, and extract it from the rear end of the spindle. Then, use a handle to remove the chuck fixing screw to remove the chuck.