What is the machining accuracy of the turn-mill combined lathe?

The turn-mill lathe is a machine tool that can perform turning and milling operations. It integrates the functions of a lathe and a milling machine and can complete the processing tasks of complex workpieces on the same equipment. The machining accuracy of a turning-milling composite lathe refers to its ability to achieve the size, geometric tolerance and other requirements during the machining process. The following will introduce in detail the structural characteristics of the machine tool, factors affecting the machining process, and common accuracy requirements. The machining accuracy of the turn-mill lathe.

First of all, the structural characteristics of the turning-milling composite lathe play an important impact on its machining accuracy. The bed structure of the turning-milling composite lathe generally adopts an integral cast iron bed, which has good rigidity and stability, which can effectively reduce the vibration and deformation of the machine tool and improve the machining accuracy. The slide rails on the bed are usually hardened using an ultrasonic frequency furnace, which further improves the wear resistance and deformation resistance of the machine tool. In addition, the spindle box part of the turning-milling composite lathe is also equipped with a pair of spindle support bearings, which effectively ensures the rigidity and accuracy of the spindle and plays a key role in improving the machining accuracy of the lathe.

Secondly, the influencing factors of the machining process also have a great impact on the machining accuracy of the turning-milling composite lathe. The machining accuracy of machine tools is affected by many factors, including the accuracy requirements of tools, fixtures, workpieces, and the performance of the machine tool itself. First of all, the choice of tool and the sharpening state of the tool have a direct impact on the machining accuracy. Choosing the appropriate tool material and shape, as well as keeping the tool in good sharpening condition, can ensure the cutting force and cutting temperature during the machining process, thus improving the machining accuracy. Secondly, the rigidity and accuracy of the fixture also have a great impact on the machining accuracy. The rigidity and stability of the fixture have an important impact on the position and shape of the workpiece. Therefore, appropriate fixtures must be used during processing to ensure the fixation and positional accuracy of the workpiece during processing. Finally, the accuracy requirements of the workpiece itself are also an important factor in determining the machining accuracy. For workpieces that require high precision, appropriate measures must be taken during the processing process to ensure their surface quality and dimensional accuracy.

In addition, the machining accuracy of the turn-milling composite lathe is also affected by the performance characteristics of the machine tool itself. For example, the spindle accuracy of the machine tool, the dynamic characteristics of the spindle and the accuracy of the transmission device, etc., will have a direct impact on the machining accuracy. The accuracy of the spindle determines the rotation accuracy and roundness of the workpiece, while the accuracy of the transmission device determines the movement accuracy and straightness of the workpiece. Therefore, when purchasing a turning-milling composite lathe, you must pay attention to the performance and accuracy requirements of the machine tool itself to ensure that it can meet the processing requirements of the workpiece.

For different processing accuracy requirements, turn-milling lathes usually have different processing capabilities. Generally speaking, the machining accuracy of turn-milling lathes can reach engineering accuracy levels. According to national standards, the precision of turn-milling lathes is divided into three levels: general precision, high precision and ultra-high precision. The machining accuracy of general precision turning and milling composite lathes can meet the first-level accuracy requirements of the GB/T18048-2008 standard, that is, the accuracy level is IT6-IT9. The processing accuracy of high-precision turning and milling composite lathes can meet the second-level accuracy requirements of the GB/T18048-2008 standard, that is, the accuracy level is IT4-IT6. The ultra-high-precision turn-milling lathe can meet the third-level accuracy requirements of the GB/T18048-2008 standard, that is, the accuracy level is IT2-IT3. According to different processing requirements and workpiece accuracy requirements, choosing an appropriate turning-milling compound lathe can meet different levels of processing accuracy.

In summary, the machining accuracy of a turn-milling composite lathe is mainly affected by the structural characteristics of the machine tool, factors affecting the machining process, and the performance characteristics of the machine tool itself. By selecting appropriate cutting tools, fixtures and processing techniques, and paying attention to the performance characteristics of the machine tool itself, the processing accuracy of the turn-milling composite lathe can be effectively improved. When purchasing a turning-milling compound lathe, you should choose the appropriate machine tool type and processing capabilities based on actual processing needs to ensure that the required processing accuracy requirements are achieved.