Working principle of CNC milling center

Working principle of CNC milling center
NC Milling - The Milling function is an efficient machining method using a rotary multi blade cutter to cut workpieces. Tool rotation (background) When the workpiece moves (as feed motion) during work, the workpiece can also be fixed, but at present, the rotating tool must also move (complete the main motion and feed motion at the same time). Milling machines include horizontal or vertical milling machines, and large factory milling machines. These machine tools can be either ordinary machine tools or numerical control machine tools.
NC milling parts are cut with rotary milling cutter. Milling is generally carried out on the milling and boring machine, which is applicable to machining planes, grooves, various forming surfaces (such as flowers, gears) and thread milling keys) and mold surfaces with special shapes.
Milling characteristics:
The cutter teeth of the milling cutter periodically participate in discontinuous cutting;
The cutting thickness is different during cutting.
Per tooth α F (mm/tooth), representing the displacement of the workpiece relative to each rotation of the blade.
After CNC milling, the working principle of the workpiece in the machining center is clamped, and the digital control system can automatically select and replace the cutting tool according to different processing workflow, automatically change the spindle speed, feed speed, and cutting tool relative to the workpiece track and other auxiliary functions, so as to complete the surface processing of multiple workpieces. There are also many different kinds of tools or cutters to make production more efficient.
Because of the centralized and automatic tool change process, the CNC milling parts machining center reduces the time for workpiece clamping, measurement and machine adjustment, making the machine cutting time reach about 80% of the machine tool startup time (only 15-20% for ordinary machine tools); At the same time, it also reduces the turnover of workpieces. The transfer and storage process takes a long time, shortens the production cycle, and has a significant economic impact. The machining center is suitable for medium and small batch production, which is more complex, more accurate and more frequent.
Compared with the vertical machining center, the horizontal machining center has a complex structure, a large area, and a high price. In addition, the horizontal machining center is inconvenient to observe during processing, and it is inconvenient to clamp and measure parts during processing, but it is simple in processing and chip removal, which is suitable for processing.