What are the methods and processes for precision machining of CNC machining parts?
Publish Time: 2024-07-10
The way and process of precision machining of CNC machined parts is a complex and delicate process that combines computer-aided design (CAD) and computer-aided manufacturing (CAM) technology to achieve high-precision and high-efficiency part manufacturing. The following is a detailed analysis of the main ways and processes of precision machining of CNC machined parts:
Processing methods
There are many ways to precision machine CNC machined parts, and the common ones include CNC milling, CNC turning, CNC laser processing, etc.
CNC milling: CNC milling machines are able to rotate cutting tools while keeping the material workpiece stationary to produce various shapes, including plane milling and peripheral milling. This method is suitable for machining parts with square or rectangular shapes, as well as parts with complex features.
CNC turning: CNC lathes feed the cutting tool along the rotating bar in a linear motion to remove material around the circumference to achieve the desired diameter and features. CNC lathe machining can create internal and external features on parts, such as drilling, broaching, reaming, grooving, tapping, threading, etc. CNC Swiss lathes are particularly suitable for machining small diameter parts.
CNC laser machining: CNC laser machines use a highly focused laser beam to precisely cut, slice or engrave materials. The laser heats the material and melts or vaporizes it, creating a cut in the material. This method allows for a wider range of design freedoms and often produces cuts and edges that do not require additional finishing processes.
Processing process
The process of precision machining of CNC machined parts includes the following key steps:
Product design and process planning:
Designers use CAD software to design products and clarify the requirements for part geometry, dimensional accuracy, surface quality, etc.
Process engineers develop machining processes based on product shape, material and machining requirements, including selecting appropriate cutting tools, cutting parameters, cutting paths, etc.
Machining program writing:
Use CAM software to convert CAD design files into machining programs. During the writing process, parameters such as cutting paths, cutting speeds, and feed rates need to be set to ensure the efficiency and quality of the machining process.
Machine tool clamping and tool preparation:
Clamp the workpiece on the machine tool to ensure that the workpiece is stable and motionless during machining.
Select the appropriate tool type and specifications and install it correctly on the machine tool.
Processing operation:
Input the programmed processing program into the CNC machine controller.
The machine tool cuts according to the path and speed specified by the program. The operator needs to monitor the processing status and adjust the cutting parameters and tools in time to ensure the processing quality and efficiency.
Processing inspection and finishing:
Use measuring tools to inspect the dimensional accuracy, form and position tolerance of the processed parts to verify whether the processed parts meet the requirements.
Perform finishing, grinding or polishing on the processed parts to eliminate possible processing defects and improve the accuracy and surface quality of the processed parts.
Post-processing and quality management:
Depending on the use requirements of the parts, surface treatment such as polishing and spraying may be required to improve the surface quality and corrosion resistance of the parts.
Perform post-processing such as cleaning and rust prevention to ensure that the parts are not damaged during storage and transportation.
Establish a strict quality management system to monitor and record the processing process in order to find problems and make continuous improvements.
In summary, the precision processing methods of CNC machined parts are diverse and flexible, which can meet the manufacturing of parts with various complex shapes and high precision requirements. The machining process requires fine operation and expertise to ensure machining quality and efficiency. With the continuous development of technology, CNC machining will play an increasingly important role in various industries, promoting the progress and development of the manufacturing industry.
