2. Hydraulic power chuck: sensitive action, fast and convenient clamping, which can realize large pressing force, improve productivity and reduce labor intensity. However, if the clamping range changes little and the size changes greatly, it is necessary to readjust the position of the jaw. CNC lathes with high degree of automation often use hydraulic self-centering chuck, which is especially suitable for batch processing.
3. Adjustable claw chuck: Compared with other types of chucks, it takes more time to clamp and align parts. Therefore, this kind of chuck is rarely used on CNC lathes, which is very important to improve productivity. Four-jaw chuck with adjustable jaws is generally used for positioning and clamping the surfaces of parts with different central or symmetrical structures. When using four-jaw chuck, panel and angle iron (bending plate) to clamp irregular and deviated workpieces, counterweight must be added.
4. High-speed power chuck: In order to improve the production efficiency of CNC lathe, higher and higher requirements are put forward for its spindle to realize high-speed or even ultra-high-speed cutting. Now some CNC lathes even reach 100000 rpm. For such high speed, the general chuck is no longer applicable, and high-speed power chuck must be used to ensure safe and reliable processing.
Get ready.
Determine the process requirements of typical parts and the batch number of the workpiece to be processed, and draw up the functions that CNC lathes should have, that is, make preparations early and choose CNC lathes reasonably on the premise of meeting the process requirements of typical parts.
The process requirements of typical parts are mainly the structural size, processing range and accuracy requirements of parts. According to the accuracy requirements, that is, the dimensional accuracy, positioning accuracy and surface roughness requirements of the workpiece, the control accuracy of the CNC lathe is selected. According to reliability, reliability is the guarantee to improve product quality and production efficiency.
The reliability of CNC machine tools refers to the long-term stable and trouble-free operation of machine tools when they perform their functions under specified conditions. That is, the average time between failures is long, and even if something goes wrong, it can be recovered and put into use again in a short time. Choose a machine tool with reasonable structure, excellent manufacturing and mass production. Generally speaking, the more users, the higher the reliability of CNC system.