What Is The Difference Between Engraving-milling machine, Engraving machine And CNC Machining Center?

What is the difference between CNC machining center, engraving-milling machine, and engraving machine? I believe this sentence will be asked by many friends who have just joined the industry. Then they don’t know how to distinguish the equipment, and don’t know what kind of equipment should be bought to meet their needs. Hopefully this article will be helpful to you.

Engraving-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. The engraving-milling machine is also called a high-speed machine. It has stronger cutting ability and very high machining accuracy. It can also directly process materials with a hardness above HRC60. It can be formed at one time. It is widely used for rough and fine processing of precision molds and batch processing of aluminum products. Jig processing, watch industry. Due to the 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 characteristics of the parts processed 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 spindle speed, feed rate and the motion path of the tool relative to the workpiece and other auxiliary functions. Continuously and automatically 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 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, and the cost is low. Because of the low precision, they are not suitable for mold development.

Comparison of indicator data:

Maximum spindle speed (r/min):

Machining center 8000; the most common engraving-milling machine is 240,000, and the minimum is 30,000 for high-speed machines; the engraving machine is generally the same as the engraving-milling machine, and the engraving machine used for highlight processing can reach 80,000, but the spindle is not ordinary electric spindle, it is an air-floating spindle.

Spindle power:

machining center is the largest, ranging from several kilowatts to tens of kilowatts; engraving-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-milling machine is second, suitable for finishing; engraving machine is the smallest.

Speed: Since the engraving-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. Machining centers and engraving-milling machines are higher than engraving machines relatively.

In terms of processing size:

The area of the workbench can better reflect this. The smallest worktable area of the machining center (in mm, the same below) is 830*500; the largest worktable area of the engraving-milling machine is 700*620, and the smallest is 450*450; The engraving machine generally does not exceed 450*450, and the common one is 45*270.

From the application object:

Machining center is used to complete processing equipment for workpieces with larger milling volume, large molds, harder materials, and also suitable for roughing of ordinary molds.

Engraving-milling machines are used for finishing small milling and small molds. Suitable for processing copper, graphite, etc.

Low-end engraving machines tend to process wood, two-color boards, acrylic boards and other low-hardness plates, and high-end ones are suitable for polishing wafers, metal shells, etc.