The Difference between Carving Milling Machine and Carving M
time: 2018-11-27 09:24
Engraving and milling machines and engraving machines and processing centers (computer gongs) are very similar in appearance and structure. Here is a comparative analysis of the three:
Machining Center: Hong Kong, Taiwan and Guangdong are known as computer gongs. It is a highly automated multi-functional CNC machine tool with tool library and automatic tool changer. The first processing center appeared in the United States in 1958. It 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 for small tool processing, torque is relatively small, focusing on the "engraving" function, such as wood (specially processed wood called wood engraving machine), dichroic board, acrylic board and other low hardness plate, not suitable for strong cutting of large workpieces. At present, most of the products on the market under the banner of engraving machine are mainly for processing crafts, low cost, low precision, not suitable for die development; but there are exceptions such as chip engraving machine.
Carving and Milling Machine: As the name implies. It can be carved or milling. On the basis of the engraving machine, the power of the spindle and servo motor is increased, and the bearing capacity of the bed is maintained. At the same time, the speed of the spindle is maintained. More importantly, the accuracy is very high. The engraving and milling machine is also developing towards high speed, which is generally called high speed machine. It has stronger cutting ability and high processing precision. It can also directly process materials with hardness above HRC60, forming at one time.
From the aspect of appearance and volume
Machining center has the largest volume, the large 1690 type machine is 4 m*3 m, and the small 850 type machine is 2.5 m*2.5 m, followed by the engraving and milling machine, the larger 750 type machine is 2.2 m*2 m, and the engraving machine is the smallest.
From the point of view of mechanical structure
Machining centers generally use cantilever type, engraving and milling machines and engraving machines generally use gantry type structure, gantry type is divided into pillar type and fixed beam type, at present engraving and milling machines are mostly fixed beam type.
On Indicator Data
Maximum spindle speed (r/min): 8000 machining centers; 240000 engraving and milling machines are the most common, and 30000 high-speed machines are the lowest; engraving machines are generally the same as engraving and milling machines, engraving machines for high-light processing can reach 80000, but that is not the general electric spindle but the air-bearing spindle.
Spindle power: Machining center is the largest, from several kilowatt to tens of kilowatt; engraving and milling machine is next, generally within ten kilowatt; engraving machine is the smallest.
Cutting quantity: Machining center is the largest, especially suitable for heavy cutting and roughing; Carving and milling machine is the second, suitable for finishing; Carving machine is the smallest.
Speed: Because the engraving and milling machines and engraving machines are lightweight, they move faster and feed faster than the processing center, especially the high-speed machine equipped with linear motor can move up to 120 m/min.
Accuracy: The accuracy of the three is similar.
From the processing dimension: the worktable area can better reflect this. The smallest workbench area (unit mm, the same below) of domestic processing centers (computer gongs) is 830*500 (850 machines); the largest workbench 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, common is 45*270 (250 machines).
From the application object: Machining center is used to complete the processing equipment of workpiece with larger milling quantity, large mould and material with comparative hardness, which is also suitable for the roughening of common mould; Engraving and milling machine is used to finish the finishing of small milling quantity and small mould, which is suitable for copper and graphite processing; Low-end engraving machine is inclined to the processing of copper and graphite. Wood, dichroic board, acrylic board and other low hardness plate processing, high-end suitable for wafer, metal shell polishing and grinding.
people say that
Machining centers and engraving and milling machines can make both products and moulds, while engraving machines can only make products.
Tool library: Machining center, there is a tool library is the processing center, there is no tool library known as computer gong or CNC milling; carving and milling machines generally do not have tool library, even if the choice of tool library is 12 knives umbrella tool library, or 6 knives in-line tool library; carving without tool library.
There is no CNC engraving and milling machine in foreign countries. Strictly speaking, engraving is a part of milling, so there is only the concept of processing center in foreign countries, and the concept of small processing center is derived to replace engraving and milling machine. Whether to buy a engraving machine or a CNC milling machine center is often a question to ask oneself, depending on the actual production needs. In addition, there are currently popular high-speed cutting machine tools (HSCMACHINE), which is called high-speed machine in China.
2. Analysis from the Angle of NC
1. - - NC milling center requires general speed for NC system, and spindle speed is about 0-8000RPM.
2. - - Engraving and milling machine requires high-speed CNC system, spindle speed 3000-30000 RPM or so.
3. High-speed cutting machine tools require high-speed CNC system and excellent servo motor characteristics. The spindle speed is about 1500-30000 RPM.