The basic knowledge and control accuracy of CNC lathe processing

2023-12-13 10:28:56

1. repetitive production of parts using CNC grinding machine process preparation man-hours occupy a higher proportion. For example, process analysis preparation, programming, first piece adjustment and trial cutting of parts, etc. The sum of these comprehensive working hours is often tens to hundreds of times of the working hours of single piece processing of parts. However, the working contents of these numerical control lathes can be saved and used repeatedly. Therefore, when 1 kinds of parts are successfully trial-produced on numerical control grinding machines and put into production repeatedly, the production cycle is greatly reduced, the cost is also less, and better economic benefits can be achieved.

2. requirements focus on ensuring the processing quality and efficient production of medium and small batch key parts CNC grinding machine can achieve high precision, high quality, high efficiency grinding under computer control. It can save a lot of special technology and equipment than special grinding machine processing, has a strong flexible manufacturing capacity and obtain better economic benefits. Compared with ordinary grinding machine, it can eliminate many artificial interference factors in the long process of complex processing, and the precision consistency and interchangeability of processed parts are good, and the processing efficiency is high.

3. the balance of the comprehensive processing capacity of parts as a single CNC grinding machine, it is difficult to complete all the processing content of a part, CNC lathe processing needs to be transferred with other equipment processing procedures, so there are production rhythm and workshop production capacity balance requirements. Therefore, it is necessary to consider giving full play to the characteristics of CNC Lathe processing, and the CNC lathe should reasonably arrange the matching balance process on other processing equipment.

Understand the basic common sense, then how should we control the accuracy?

4. consideration for processing some special parts, although some parts are processed in small batches and common lathes, they have complex shapes, high quality and good interchangeability. This cannot meet the above requirements on non-numerical control grinding machines and can only be processed on numerical control grinding machines, such as parabola, cycloid cam and mirror surface of special profile.

The preliminary steps of CNC lathe processing first determine the process requirements of the parts and the batch of processed workpieces, draw up the functions that the CNC lathe should have and make preliminary preparations. The prerequisite for reasonable selection of CNC lathes meets the process requirements of typical parts. The process requirements of typical parts are mainly the structural size, processing range and precision requirements of the parts. According to the accuracy requirements, that is, the size of the workpiece accuracy, positioning accuracy and surface roughness requirements to select the control accuracy of CNC lathe processing.

According to the reliability to choose, reliability is to improve product quality and production efficiency guarantee. The reliability of CNC Machine Tools refers to the long-term stable operation without failure when the machine performs its functions under specified conditions. That is, the average failure-free time is long, even if there is a failure, it can be recovered in a short time and put into use again. Choose machine tools with reasonable structure, excellent manufacturing and mass production. In general, the more users, the higher the reliability of the CNC system. General imported systems include Japan's Sanling, Fanak, Germany's Siemens, domestic ones are Guangji, Kane Di, and the new generation is more commonly used.