Computer gong engraving machine

Processing center: Hong Kong, Taiwan, Guangdong area known as the computer gong, is a highly automated multi-functional CNC machine tool with tool magazine and automatic tool change device. The first machining center appeared in the United States in 1958. High speed computer gong machining can realize the centralized processing of milling, drilling, boring, reaming, tapping and other processes after the workpiece is clamped once, with special emphasis on “milling”.

Engraving machine: its spindle speed is high, suitable for small cutting tools processing, torque is relatively small, focusing on the “carving” function, such as wood (wood carving machine for special processing of wood), dual color board, acrylic plate and other plates with low hardness, which are not suitable for large workpieces with strong cutting. Most of the products on the market with the banner of engraving machine are mainly for processing handicrafts with low cost. Due to the low precision, they are not suitable for mold development. However, there are also exceptions, such as wafer engraving machine.

Carving and milling machine: as the name implies. It can be carved or milled. On the basis of the engraving machine, the power of the spindle and servo motor is increased, and the bearing force of the lathe bed is maintained. At the same time, the high speed of the spindle is maintained. More importantly, the precision is very high. Engraving and milling machine also to high-speed development, commonly known as high-speed machine, cutting ability is stronger, processing accuracy is very high, but also can directly process hardness above HRC60 materials, one-time molding.

The highest spindle speed (R / min): Machining Center 8000; engraving and milling machine is the most common 240000, high-speed machine is the lowest 30000; engraving machine is generally the same as engraving and milling machine, the engraving machine used for high gloss processing can reach 80000, but the air bearing spindle is not used.

Spindle power: the machining center is the largest, ranging from several thousand watts to tens of kilowatts; carving and milling machines are the second, generally within ten kilowatts; engraving machines are the smallest.

Cutting capacity: high speed computer gong machining center is the largest, especially suitable for heavy cutting and rough cutting; engraving and milling machine is the second, suitable for finishing; engraving machine is the smallest.

Speed: because engraving and milling machines and engraving machines are light and light, their moving speed and feed speed are faster than the machining center, especially for high-speed machines equipped with linear motor, the maximum moving speed is 120m / min

Accuracy: the accuracy of the three is similar.

From the processing size: the worktable area can better reflect this. The smallest worktable area (unit mm, the same below) of domestic machining center (computer gong) is 830 * 500 (850 machines); the largest worktable area of engraving and milling machines is 700 * 620 (750 machines), and the smallest is 450 * 450 (400 machines); engraving machines generally do not exceed 450 * 450, and the common ones are 45 * 270 (250 machines).

In terms of application objects: the machining center is used to complete the processing equipment of large milling amount of workpieces, large molds and materials with hardness comparison, which are also suitable for the opening of common molds; the engraving and milling machine is used to finish the finishing of small molds with small milling amount, which is suitable for copper and graphite processing; the low-end engraving machines are inclined to those with low hardness such as wood, double color board and acrylic plate Plate processing, high-end suitable for wafer, metal shell polishing and polishing.

Generally speaking, machining center and engraving and milling machine can do both products and molds, while engraving machine can only do products.

Tool magazine: Machining Center, where there is a tool library, is a machining center; if there is no tool library, it is called computer gong or CNC milling; generally, engraving and milling machines do not have a tool library, even if the tool magazine is selected, it is umbrella type tool library with 12 knives or in-line tool library with 6 knives; carving has no tool library.

In foreign countries, there is no term for CNC Engineering and milling machine. Strictly speaking, carving is a part of milling, so there is only the concept of machining center in foreign countries, and the concept of small machining center is derived to replace engraving and milling machine. Purchase engraving machine or CNC milling machining center is often asked their own questions, to see the actual production needs. In addition, there is a popular high-speed cutting machine (hscmachine), which is called high-speed machine in China.

2、 Analysis from the angle of numerical control

— the CNC milling center requires a general speed for the CNC system, and the spindle speed is about 0 ~ 8000 rpm
– engraving and milling machine requires high-speed CNC system, high-speed computer gong processing spindle speed of 3000 ~ 30000 rpm
High speed cutting machine requires high-speed CNC system and excellent servo motor characteristics, spindle speed of 1500 ~ 30000 rpm

The highest spindle speed (R / min): Machining Center 8000; engraving and milling machine is the most common 24000, high-speed machine is the lowest 30000; engraving machine is generally the same as engraving and milling machine, engraving machine used for high gloss processing can reach 80000, but it uses air bearing spindle instead of ordinary motorized spindle.

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

Accuracy: the accuracy of the three is similar.

From the application object: the machining center is used to complete the processing equipment of large milling amount of workpieces

Computer gong engraving machine