CNC programming is an indispensable technology, it plays a vital role in modern manufacturing. It adopts computer-assisted design and computer-aided manufacturing to achieve precise control of CNC machine tools, which not only improves machining efficiency, and reduces production costs, but also greatly improves manufacturing accuracy.
Basic steps of CNC programming:
1. Determine the machining process before programming, and the machining process needs to be determined according to the shape and processing requirements of the workpiece. This includes choosing appropriate knives, cutting speed, and feed rate.
2. Draw the machining trajectory During the programming process, the geometric shape and processing trajectory of the workpiece need to be drawn. This can be obtained through CAD software or manual measurement and then converted to the instructions of the digital programming language.
3. Write the CNC program based on the machining trajectory and process requirements, and use CNC programming language to write the CNC program. The program includes the combination of G code, M code, and T code, as well as related rhetoric, compensation, and cycle instructions.
4. Debugging and optimization
After writing the control program, debugging and optimization are required through the accuracy and feasibility of simulation or actual processing verification procedures, and the necessary modification and optimization to improve processing efficiency and quality.
In CNC machining, the G code and M code are very critical instructions. G code is instruction for machining trajectory and speed, which tells the machine how to move the tool to complete the machining task. The M code is instructions to control the movement of machine tools, such as switching spindles, coolant, etc.
G code in CNC programming
The G code is commonly used in CNC programming, which is used to control the machine tools to perform various actions and functions. It contains a series of instructions, and each instruction represents a specific action or function. The role of G code is to tell the machine how to process the machine, including mobile, positioning, cutting, and other operations.
Common G code instructions and their functions
G00: Quickly move and move at the fastest speed.
G01: Straight interpolation, straight-line cutting, or movement.
G02: Arc interpolation to cut clockwise arc cutting.
G03: Arc interpolation, carry out counterclockwise arc cutting.
G90: Absolute programming, positioning with absolute coordinates.
G91: Increased programming, positioning relative coordinates.
G code writing specifications and precautions
1: When writing G code, you should pay attention to the order and logic of the code to ensure that each instruction has a clear effect.
2: Use notes to explain the G code to facilitate reading and understanding others.
3: When writing the G code, pay attention to parameter settings such as motion speed and depth of processing of machine tools to ensure a safe and accurate machining process.
M code in CNC programming
M code is an instruction that controls the machine tool auxiliary function in CNC programming. It includes functions such as starting and stopping machine tools, switching the spindle speed, coolant switch, and workpiece fixed fixture control.
Common M code instructions and their functions
M00: Program suspension
M03: The main axis is rotating
M05: The main axis stops
M08: Cooling liquid opening
M09: Coolant off
In practical applications, the G code and M code are usually written in a program, and then compiled and executed through the control system of CNC machine tools. This program is stored in the memory of the CNC machine, or transmitted to the control system of the CNC machine tools through external equipment. During the machining process, the CNC machine tools will exercise and operate according to the instructions in the program to complete the processing of the workpiece.
The future development trend of CNC programming
1: More and more intelligent: With the development of artificial intelligence, big data, and other technologies, CNC programming will become more and more intelligent, which can better adapt to complex processing needs;
2: Cross-border fusion: CNC programming will integrate more in the fields of sensor technology, cloud computing, and other fields to achieve more efficient and accurate processing control;
3: Autonomous development: The development of domestic CNC programming systems will be more independent, reducing dependence on import technology, and enhancing the competitiveness of the domestic manufacturing industry.
As one of the core technologies of high-end manufacturing, CNC programming has continuously promoted the innovation and development of manufacturing. DMTC adopts the most advanced machine equipment and technologies to meet the different needs of the market. Our technicians have more than ten years of CNC programming technology and can precisely manufacture various products. Our products have been selling well in overseas. With the continuous progress of technology, CNC programming will continue to play an irreplaceable role in global manufacturing.
