Method of Determining Machining Program of Numerical Control Lathe
Introduction
Numerically controlled lathes are used for mechanizing various parts of curved surfaces, hole machining, various threads and other complex movements. The advantage of numerically controlled lathe is that manual intervention is less in machining process and production efficiency is higher. The numerical control lathe is suitable for various complex processing and batch processing. The machining program set for the numerical control lathe is a set of instructions processed by the numerical control language. It includes instructions such as advanced instruction code and instruction modifier, which can describe at least any processing movement used in the numerical control processing process.
Part 1 Preparation Prior to Programming
Before proceeding with the program installation itself, certain preparations must be made on the numerical control lathe.
1. Ensure that all parameters of the numerical control lathe are correct. In addition to the parameters of the numerical control system, the parameters of the machine tool itself, such as spindle speed parameters, feed parameters, etc., must be checked and confirmed.
2. Firmly fix the workpiece and the spindle center line to ensure its concentricity.
3. Choose the suitable tool for the machining and confirm its parameters.
4. Check the tool path to ensure that it is the same as the specified drawing.
5. Record all parameters that must be set for machining, such as tool number, spindle speed, processing speed, etc.
Part 2 Learn CNC Programming Approach
CNC programming can be divided into the following approaches:
1. Conversational programming: programming on the machine, which is simple and convenient.
2. Programming on a conventional machine tool, which is not easy for complex forms.
3. Program generation with CAM programming, which is suitable for complex process parts and batch automatic machining.
Part 3 Set Processing Program
The programming process of the numerical control lathe is divided into three steps: 1. Set the cutting conditions, 2. Set the motion, 3. select a cycle or subroutine and set the parameters.
1. Set cutting conditions: set speed, cutting force, and other data required for cutting.
2. Set motion: Set the program according to the size and shape of the part and the machine.
3. Select a cycle or subroutine: select the program cycle or subroutine to meet the production requirements.
4. Set parameters: Set the parameters of the cycle or subroutine to meet the production requirements.
Part 4 Computer Simulation of Program and Test Machine
When programming of one part is complete, the programmer should perform a program simulation on the computer. This helps to determine the correctness of the program and avoid many common programming errors.
In addition, it is necessary to perform a test on the machine to check the correctness of the machining conditions and the accuracy of the machining after the program is downloaded to the machine.
Conclusion
The numerical control lathe is an automated machine with high production efficiency and accuracy. In order to ensure the correctness and accuracy of the machining process, the determination of machining program is particularly important. In accordance with the above steps of preparation, programming, setting parameters and simulation verification, the machining program can be determined quickly and accurately.
