The application of numerical control lathe to machining non-circular curve mother line
Introduction
Numerical control lathe is a machine tool with computer numerical control (CNC) technology. It is suitable for machining rotating parts with axes or irregular shapes. It can realize the processing of external cylindrical surface, internal cylindrical surface, cone surface and end surface of workpiece. This kind of processing includes turning, facing, chamfer and grooving. With the development of numerical control technology, numerical control lathe can also be used to process non-circular curve mother line.
Analysis of processing characteristics of non-circular curve mother line
Non-circular curve mother line belongs to non-circular curve machining. Its surface is more complex than circular shape. The selection of processing path, selection of cutting capacity, cutting amount and cutting tool are very important. The processing of non-circular curve mother line requires that the numerical control lathe has positioning accuracy, cutting accuracy, and high-speed cutting ability. Therefore, when processing non-circular curve mother line, the cutting tools used should have certain stiffness and strength.
Process flow of non-circular curve mother line
The processing of non-circular curve mother line on the numerical control lathe generally adopts a multi-stitch path processing method. The cutting amount of each feeding time is small to ensure the cutting accuracy. The process flow of non-circular curve mother line processing is as follows:
1. Set up machine tool: Install numerical control linkage chuck, turntable or four-jaw independent chuck, spindle speed and switch.
2. Initialize the numerical control system: Input work coordinates, workpiece coordinates, detection points, reference points, tool usage specifications and control instructions into the machine memory.
3. Detect the contour of the mother line: Measure the profile and contour of the mother line with a probe or touch detector.
4. Edit the data: Convert the measured data into a continuous line segmentation processing technology.
5. Programming: According to the requirements of the process, the correct minimum distance and line overlap size, set the parameters of the cutting tool and all programming instructions.
6. Machine tolerance setting: Cut the mother line with a CNC lathe and set the allowable tolerance of the machining part according to the processes.
7. Processing: Place the material at the required position of the machine, select the appropriate cutting tool, and install it on the machine tool for machining.
8. Detection: After machining, use a probe or detector to detect the machined mother line for dimensional accuracy.
Conclusion
The above is about the numerical control lathe accurate processing of non-circular curve mother line specific method. Non-circular curve mother line processing is a very complex process. It is difficult and requires a lot of data. Therefore, in the process, pay attention to the selection of path and cutter, reasonable cutting amount and so on, observe the running of the machine tool at any time, pay attention to the deviation of the cutting data and the operation of the machine tool, and stop the machine in time if there is any abnormality.
