The difference between CNC machining center, engraving and milling machine, and engraving machine

What is the difference between machining center, engraving and milling machine, and engraving machine? , I believe this sentence will be asked by many friends who have just joined the circle, and then they don’t understand when buying machinery and equipment, and don’t know how to distinguish between them. What kind of equipment should be bought in order to meet their needs. Today is a small CNC expert. The editor will show you the difference between the three 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. They are generally called high-speed machines. They have stronger cutting capabilities and very high machining accuracy. They can also directly process materials with a hardness above HRC60. They can be formed at one time and are widely used for rough and fine machining of precision molds. , Mold copper electrode, aluminum product batch processing, shoe mold manufacturing, fixture processing, watch eye environment industry. Due to high cost performance, fast processing speed, and good finish of processed products, it has become more and more important in the machine tool processing industry.

cnc machining center:

The areas of Hong Kong, Taiwan and Guangdong are also called computer gongs. The characteristics of machining parts on the machining center are: After the processed parts are clamped once, the CNC system can control the machine tool to automatically select and change tools according to different procedures; automatically change the machine tool spindle Rotation speed, feed rate, tool relative to the workpiece motion track and other auxiliary functions, continuous drilling, countersinking, reaming, boring, tapping, milling and other multi-process processing on each processing surface of the workpiece. Since the machining center can complete a variety of processes intensively and automatically, it avoids human operation errors, reduces workpiece clamping, measurement and machine tool adjustment time and workpiece turnover, handling and storage time, greatly improving 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.

Engraving machine:

The torque is relatively small, and the high spindle speed is suitable for the processing of small tools. It focuses on the "engraving" function and is not suitable for large workpieces with strong cutting. At present, most of the products on the market under the banner of engraving machines are mainly for processing handicrafts, with low cost. Due to the low precision, they are not suitable for mold development; engraving and milling machines and machining centers. The index data of the engraving machine is compared with the maximum speed of the spindle (r/min): machining center 8000; the most common engraving and milling machine is 240,000, and the lowest is 30,000; the engraving machine is generally the same as the engraving and milling machine, and the engraving machine used for highlight processing can reach 80,000 , But it is not a general electric spindle but an air-floating spindle. 　　

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

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

Speed: Since the engraving and milling machines and engraving machines are relatively light, their moving speed and feed speed are faster than machining centers, especially the high-speed machines equipped with linear motors have a moving speed of up to 120m/min 　　

Accuracy: The accuracy of the three 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); engraving machines generally do not exceed 450*450, and the common one is 45*270 (250 machines). 　　

From the application object:

Machining center is used to complete processing equipment for workpieces with larger milling volume, large molds and materials with comparable hardness are also suitable for roughing of ordinary molds; engraving and milling machines are used to complete small milling volume, fine processing of small molds, suitable for Processing of copper, graphite, etc.; low-end engraving machines tend to process low-hardness plates such as wood, two-color plates, and acrylic plates, and high-end ones are suitable for polishing and polishing wafers, metal casings, etc.

There is no term for engraving and milling machine (CNC engraving.milling machine) in foreign countries. Strictly speaking, engraving is a 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 and milling machine. . Buying an engraving machine or buying a CNC milling machining center is a question that you often have to ask yourself, 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.