What is the difference between machining center, milling machine and engraving machine? I believe that many friends who have just joined this circle will ask this question, and then they don't understand it when buying mechanical equipment. They don't know how to distinguish and what kind of equipment should they buy to meet their needs. Today, the editor will tell you the difference between the three.
Milling machine:
As the name suggests, it can be engraved and milled. On the basis of the engraving machine, the spindle and servo motor power are increased, the bed bearing capacity is increased, and the spindle speed is also maintained. The high speed of the engraving machine is also developing towards high speed, generally called a high-speed machine, with stronger cutting ability and very high processing accuracy. It can also directly process materials with a hardness of more than HRC60, and is formed in one time. It is widely used in the rough and fine processing of precision mold cores, mold copper electrodes, batch processing of aluminum products, shoe mold manufacturing, fixture processing, and watch industry. Due to its high cost performance, fast processing speed, and good finish of processed products, it occupies an increasingly important position in the machine tool processing industry. CNC machining center: It is also called computer gong in Hong Kong, Taiwan and Guangdong. The characteristics of machining parts on the machining center are: after the machined parts are clamped once, the CNC system can control the machine tool to automatically select and replace the tool according to different processes; automatically change the machine tool spindle speed, feed rate and the movement trajectory of the tool relative to the workpiece and other auxiliary functions, and continuously perform multiple processes such as drilling, countersinking, reaming, boring, tapping, milling, etc. on each machining surface of the workpiece. Since the machining center can complete multiple processes in a centralized and automatic manner, it avoids human operation errors, reduces the workpiece clamping, measurement and machine tool adjustment time, and the workpiece turnover, handling and storage time, greatly improves the machining efficiency and machining accuracy, so it has good economic benefits. Machining centers can be divided into vertical machining centers and horizontal machining centers according to the position of the spindle in space.
Engraving machine:
The torque is relatively small, the spindle speed is high, suitable for the processing of small tools, focusing on the "engraving" function, and is not suitable for large workpieces with strong cutting. At present, most of the products on the market that are under the banner of engraving machines are mainly for processing handicrafts, with low cost. Due to low precision, they are not suitable for mold development; engraving and milling machines, machining centers. Comparison of engraving machine indicators and data: the maximum spindle speed (r/min): 8000 for machining centers; 240,000 for engraving and milling machines, and 30,000 for high-speed machines; engraving machines are generally the same as engraving and milling machines. Engraving machines used for high-light processing can reach 80,000, but they do not use ordinary electric spindles but air-floating spindles. Spindle power: The machining center has the largest power, ranging from a few kilowatts to tens of kilowatts; engraving and milling machines are second, generally within ten kilowatts; engraving machines have the smallest power. Cutting volume: The machining center has the largest power, especially suitable for heavy cutting and roughing; engraving and milling machines are second, suitable for fine processing; engraving machines have the smallest power. Speed: Since engraving and milling machines and engraving machines are relatively light, their moving speed and feed speed are faster than those of machining centers, especially high-speed machines equipped with linear motors have a maximum moving speed of 120m/min. Accuracy: The accuracy of the three is similar. In terms of processing size: the workbench area can reflect this relatively well. The smallest workbench area (unit: mm, the same below) of domestic machining centers (computer gongs) is 830*500 (850 machine); the largest workbench area of engraving and milling machines is 700*620 (750 machine), and the smallest is 450*450 (400 machine); engraving machines generally do not exceed 450*450, and the most common is 45*270 (250 machine).
In terms of application objects:
Machining centers are used to complete processing equipment for workpieces with large milling volumes, large molds, and materials with relatively hard hardness, and are also suitable for roughing ordinary molds; engraving and milling machines are used to complete small milling volumes, fine processing of small molds, and are suitable for copper, graphite, etc. processing; low-end engraving machines tend to process wood, two-color boards, acrylic boards, and other boards with low hardness, while high-end ones are suitable for polishing and grinding of chips, metal shells, etc. There is no such thing as CNC engraving milling machine in foreign countries. Strictly speaking, engraving is part of milling, so foreign countries only have the concept of machining center, and the concept of small machining center is derived from it to replace engraving milling machine. Whether to buy an engraving machine or a CNC milling machining center is a question that you often ask yourself, depending on the actual production needs. In addition, there is the currently popular high-speed cutting machine (HSCMACHINE), which is called a high-speed machine in China. Let us first clarify the differences between the three models: 1. CNC milling and machining centers are used to complete the processing equipment of workpieces with a large amount of milling. 2. CNC engraving milling machines are used to complete small milling amounts or soft metal processing equipment. 3. High-speed cutting machine tools are used to complete medium milling amounts and reduce the amount of grinding after milling to the minimum. 4. In-depth analysis of the structure and data processing type of the above equipment can help us make the right choice. The article has already talked about the differences between engraving milling machines, machining centers and engraving machines in detail. I believe everyone should have a certain understanding of these three in their hearts.
