Differences Between Machining Center and Milling-Engraving Machine

What’s the difference between a machining center and a milling-engraving machine? I believe this sentence will be asked by many friends who have just joined the field of CNC, and then they don't understand when buying equipment, and even don't know how to distinguish between them. What kind of equipment should be bought to meet their needs. Let’s take a look at the difference between the two of them.

Engraving and milling machine

As the name suggests, it can be engraved and milled. On the basis of the engraving machine, the power of the spindle and the servo motor is increased, and the machine body can withstand the force while maintaining the high speed of the spindle. Engraving and milling machines are also developing at a high speed, generally called high-speed machines.

The cutting ability is stronger and the machining accuracy is very high. It can also directly process materials with a hardness above HRC60. It is formed at one time and is widely used in the rough and fine processing of precision mold cores, such as mold copper electrodes, aluminum product batch processing, shoe mold manufacturing, Metallurgical tool processing, clock, and watch industry. Due to the high-cost performance, fast processing speed, and good finish of processed products, engraving and milling machines are becoming more and more important in the machine tool processing industry.

CNC machining center

Also known as the computer gong, the characteristic of machining parts on the machining center is: after the part to be machined is clamped once, the CNC system can control the machine tool to automatically select and change tools according to different procedures; automatically change the spindle speed and advancement of the machine tool. Feeding and the motion path of the tool relative to the workpiece and other auxiliary functions can continuously perform multi-process processing such as drilling, countersinking, reaming, boring, tapping, and milling on each processing surface of the workpiece.

Since the machining center can complete a variety of processes intensively and automatically, it avoids man-made operating errors, reduces workpiece clamping, measurement and machine tool adjustment time, workpiece turnover, handling and storage time, and greatly improves processing efficiency and processing accuracy. So it has good economic benefits. The machining center can be divided into a vertical machining center and a horizontal machining center according to the position of the spindle in the space.

The difference between the two lies in the following points.

  • Spindle power: The machining center is relatively large, ranging from several kilowatts to tens of kilowatts; the engraving and milling machine is relatively small, generally within ten kilowatts.
  • Cutting capacity: The machining center is larger, which is especially suitable for heavy cutting and roughing; the engraving and milling machine is smaller, which is suitable for finishing.
  • Speed: Since engraving and milling machines are relatively light, their moving speed and feed speed are faster than machining centers, especially high-speed machines equipped with linear motors. The moving speed can reach up to 120m/min.
  • Accuracy: The accuracy of the two is similar.
  • In terms of processing size: The area of the workbench can better reflect this. The smallest worktable area (unit mm, the same below) of domestic machining centers (computer gongs) 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).
  • From the application object: the machining center is used to complete the processing equipment of the workpiece with larger milling amount, the large-scale mold, the material with comparative hardness is also suitable for roughing the ordinary mold; the engraving and milling machine is suitable for completing the small milling amount, the finishing of the small mold. It is suitable for the processing of copper and graphite.

An in-depth analysis of the structure of the above-mentioned equipment and data processing types can help us make the right choice. The article has already talked about the difference between engraving and milling machines and machining centers in detail. I believe everyone should have a certain understanding of both in their hearts. Of course, if you need to buy metal cutting tools for these two machines. Such as CNC carbide inserts, end mills, etc. just contact us freely.

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