Six things to pay attention to when clamping a CNC lathe at once!

The machining process of a CNC lathe is similar to that of a regular lathe, but due to the fact that a CNC lathe is a one-time fixture and continuously and automatically processes all turning processes, attention should be paid to the following aspects:
1. Reasonably select cutting amount
The reasonable selection of cutting parameters (ap, f, v) plays an important role in fully tapping into the potential of machine tools and tool cutting performance, achieving high-quality, high-yield, low-cost, and safe operations.
When rough cutting, first consider selecting a maximum back cutting amount ap, then choose a larger feed rate f, and finally determine a suitable cutting speed v. Increasing the back cutting amount ap can reduce the number of tool passes, and increasing the feed rate f is beneficial for chip breakage. Therefore, selecting the rough cutting amount based on the above principles is beneficial for improving production efficiency, reducing tool consumption, and reducing processing costs.
When precision turning, high machining accuracy and surface roughness are required, and the machining allowance is not large and relatively uniform. Therefore, when selecting the cutting amount for precision turning, it is important to focus on how to ensure machining quality and improve productivity as much as possible on this basis. Therefore, when precision turning, a smaller (but not too small) back cutting amount ap and feed rate f should be selected, and tool materials with high cutting performance and reasonable geometric parameters should be selected to maximize the cutting speed v.
2. Reasonably select cutting tools
1) When rough turning, it is necessary to choose cutting tools with high strength and good durability to meet the requirements of large back cutting and large feed during rough turning;
2) When precision machining, it is necessary to choose cutting tools with high precision and good durability to ensure the required machining accuracy.;
3) To reduce tool changing time and facilitate tool alignment, machine clamped knives and machine clamped blades should be used as much as possible.
3. Reasonable selection of fixtures
1) Try to use universal fixtures to clamp workpieces and avoid using specialized fixtures;
2) The part positioning reference coincides to reduce positioning errors.
4. Determine the processing route
The machining route refers to the motion trajectory and direction of the tool relative to the part during the machining process of a CNC machine tool:
1) Should be able to ensure machining accuracy and surface roughness requirements;
2) Efforts should be made to shorten the processing route and reduce the tool idle travel time.
5. Connection between processing route and processing allowance
At present, before the widespread use of CNC lathes, it is generally necessary to allocate excessive allowances on the blank, especially those containing forged or cast hard skin layers, to be processed on ordinary lathes. If it is necessary to use a CNC lathe for machining, attention should be paid to the flexible arrangement of the program.
6. Key points for fixture installation
At present, the connection between the hydraulic chuck and the hydraulic clamping cylinder is achieved through 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 pull it out from the rear end of the spindle. Then, use a handle to remove the chuck fixing screw to remove the chuck.