Profiled thread is a kind of thread with special shape, whose shape and size are different from ordinary thread. Special CNC machining technology is required for the machining of profile threads to meet the special shape and size requirements. This paper will introduce the CNC machining technology of shaped threads, including its characteristics, classification and machining methods.
Characteristics and classification of shaped threads
Shaped thread is a kind of thread with special shape and size, and its characteristics mainly include the following aspects:
- The shape and size of shaped threads are different from ordinary threads, which need to be processed by special processing technology.
- Shaped threads are more difficult to process and require high precision CNC machining equipment and process.
- The machining accuracy of profiled threads is high, which requires the use of high-precision tools and machining processes.
According to its different shapes and sizes, shaped threads can be divided into many types, including:
- Conical shaped thread: its thread cross-section is conical, suitable for the connection of conical parts.
- Oval shaped threads: with oval thread cross section, suitable for connection of oval shaped parts.
- Variable-pitch shaped threads: the pitch changes with the change of thread length and is suitable for threaded connections of longer lengths.
- Variable diameter profile threads: the diameter of the thread varies with the length of the thread and is suitable for thread connections with larger diameters.
CNC machining of shaped threads
The CNC machining methods for shaped threads mainly include the following:
- Milling method: milling cutter is used for processing, suitable for shaped threads with short length.
- Segmented machining method: the screw is processed in segments to avoid the limitation of screw length, which is suitable for longer length of shaped threads.
- CNC Turning Center: Adopting CNC turning center and related power tools for processing, applicable to the processing of various shaped threads.
- CNC grinding machine: CNC grinding machine is used for processing, which is suitable for abnormal threads with rough thread surface and high matching precision.
Characteristics of CNC machining technology for shaped threads
Shaped thread CNC machining technology has the following characteristics:
- It can quickly transform the shape of parts and provide convenience for mass production of parts.
- Applicable to the processing of parts with complex surface shape.
- High machining accuracy and stable quality.
- Can choose different processing methods according to their own needs.
Programming mode of shaped thread CNC machining technology
The programming mode of shaped thread CNC machining technology mainly includes manual programming and computer-aided programming. Manual programming requires the programmer to analyze the part drawing and calculate the node coordinates manually, which is suitable for simple parts processing. Computer-aided programming requires the use of computer-aided software for programming, applicable to complex parts processing. The choice of programming method needs to be decided according to the specific situation.
Conclusion
Profiled thread CNC machining technology is a wider range of applications, more practical processing technology. In the actual operation process, it is necessary to effectively master its characteristics and processing methods, so as to better apply to the actual production. In the future, it is necessary to conduct more in-depth research on this technology to promote its development and make its application more fluent and efficient.