xiehe model

There are two main forms of turning-milling composite parts processing: contour processing when the workpiece is parallel to the tool axis; surface processing when the workpiece is perpendicular to the tool axis. Contour milling is similar to machining the inner and outer contours of a rotating workpiece by helical interpolation milling. Surface processing milling and turning can only process the outer surface. Although the turning-milling compound looks similar to turning, it is as simple as turning with a rotary milling cutter, but the processing methods of the two are fundamentally different. The cutting speed of turning and milling combined machining depends on the speed of the milling cutter. Cutting speed, unlike turning, is determined by the speed of the workpiece. In turning and milling, the workpiece speed is only related to the feed rate.

Turn-milling composite processing has its own application fields and advantages, mainly as follows.

First, the machining of discontinuous surfaces results in interrupted cuts, such as the machining of various grooves and root clearances. In classical turning, this operation generates shock loads that are not conducive to machining, resulting in poor surface quality and premature tool wear. In turn-mill machining, the tool used is a milling cutter, and the milling itself performs intermittent cuts under cyclically changing loads.

When the processing material is a long chip material. Chip formation is difficult to manage during turning. Finding the right chipbreaker for a turning tool is not easy. The milling cutters used in mill-turn machining produce short chips, significantly improving chip control.

Take the crankshaft s and the mainshaft with eccentric journals as examples. Eccentric mass shafts, journals and eccentric cams of workpieces such as cranks during turning can cause unbalanced forces that can adversely affect machining, avoid combinations of turning and milling that can have such negative effects due to low workpiece speeds.

Introduced in manufacturing, it not only solves the processing problem, but also greatly improves the output. With relatively new machining methods, when you have the right modern machine tools and the right cutting tools, you can greatly increase your productivity. Although CNC machine tools have been widely accepted and used, the development of metal cutting machine tools is still too traditional, and specific machine tools are developed according to their respective functions (such as turning, milling, and drilling).

If it is possible to integrate a machining center equipped with a rotating tool (such as a milling cutter or a drill) for CNC turning, it can reduce downtime and improve the efficiency of downtime machining by reducing the number of clamping and moving workpieces from this machine to another machine; The need to increase efficiency has led to a shift away from installing rotary power heads on traditional CNC lathes, enabling turn-milling operations. Today's modern multi-tasking machine tools have B-axis that allows tool rotation and movement, advanced control systems and advanced CAM software, so that the workpiece can perform the main machining task in a single setup.