Machining centers, milling machines, engraving machines, how to distinguish between the three

First, from the concept: 　　

Machining center: it can realize the workpiece after a clamping can be milling, drilling, boring, reaming and tapping and other processes of centralized processing, with special emphasis on the “milling” function.

Engraving and milling machine: as the name suggests can be carved, can also be milling, but also in the engraving machine on the basis of increasing the spindle, servo motor power, bed bearing, while maintaining the high speed of the spindle, and more importantly, high precision. Engraving and milling machine is also in the development of high-speed, also known as high-speed machine, cutting capacity is stronger, higher processing accuracy, but also can directly process the hardness of the material in the HRC60 or more, a molding.

Engraving machine: spindle speed is high, suitable for small tool processing, but the torque is relatively small, focusing on the “carving” function, such as wood (specializing in the processing of wood panels known as wood carving machine), two-color plate, acrylic panels and other hardness of the plate is not high, is not very suitable for strong cutting of large workpieces.

Second, from the appearance of the volume:

Machining center volume is the largest, the market, such as large 1690-type machine, volume in 4m * 3m, small 850-type machine volume is also in 2.5m * 2.5m Baoma company also designed the BVMC-650-type machine in 2.1m * 2.1m;

Carving and milling machine second, the market is relatively large like 750-type machine is generally in 2.2m * 2m.

Engraving machine is the smallest, probably in 1.8m or so.

Third, from the mechanical structure:

Vertical machining centers generally use cantilever, milling machines and engraving machines generally more gantry architecture, gantry is divided into building beam and fixed beam type, the current engraving and milling machine to fixed beam type mostly.

Fourth, from the index data: 　

Maximum spindle speed (r/min): machining center speed is generally 12000; engraving and milling machine most commonly 24000 rpm, engraving machine can reach a minimum of 30000; engraving machine is generally the same as the engraving and milling machine for high light processing engraving machine can reach 80000 rpm, but that is not a general use of the electric spindle but the air-floating spindle.

Spindle power: machining center power is the largest, from a few kilowatts to dozens of kilowatts have, the torque is also the largest; engraving and milling machine, generally within ten kilowatts; engraving machine is the smallest, the minimum amount of eating knife. 　　

Cutting: machining center is the largest, especially suitable for heavy cutting, open rough; engraving and milling machine is second, suitable for finishing; engraving machine is the smallest.

Moving speed: due to the milling machine and engraving machine are relatively lightweight, their moving speed and feed speed faster than the machining center, especially equipped with linear motors of the engraving machine moving speed up to 120m/min 　　

Processing accuracy: the accuracy of the three is almost the same. 　

Five, from the processing size:

Worktable area can be a better illustration of this point. Domestic machining centers (computer gong) the smallest table area (unit mm, the same below) in 850 * 520 (BMVC650 machine); carving and milling machine in the largest table area of 1050 * 1300 (BMDX120100 machine), the smallest is 420 * 600 (BMDX5040 machine); carving machine is generally not more than 450 * 450, common is 45 * 270 (250 machine). 270 (250 machine). 　　

Sixth, from the application object:

Machining centers are mainly used for larger milling volume of workpiece processing, large molds, hardness of the material is relatively high, but also suitable for ordinary mold roughing; engraving and milling machine is more suitable for completing smaller milling volume, small molds, finishing, suitable for copper, graphite, etc.; low-end engraving machine is biased towards wood, two-color plate, acrylic boards and other hardness of non-metallic plate processing, high-end suitable for wafers, metal casings etc. Polishing and grinding.