High-torque electric spindles play a crucial role in the field of last CNC milling machines. There are mainly two types: direct-drive and belt-driven. The direct-drive high-torque electric spindle has a simple structure. It directly connects the motor rotor to the spindle, eliminating the need for intermediate transmission components. This design allows it to achieve a high rotational speed range, typically from 8000 to 24000 RPM, with a torque value of up to 15 N·m. The belt-driven type, on the other hand, uses a belt to transfer power from the motor to the spindle. Although its structure is relatively complex, it can provide stable power transmission within a certain range. Generally, its rotational speed ranges from 6000 to 20000 RPM, and the torque can reach about 12 N·m.
When compared with ordinary electric spindles, high-torque electric spindles have significant advantages in anti-load capacity, thermal stability, and dynamic response. In terms of anti-load capacity, high-torque electric spindles can maintain stable operation under heavy load conditions. For example, when processing high-hardness materials in last manufacturing, the anti-load capacity of high-torque electric spindles can be 30% - 50% higher than that of ordinary electric spindles. In terms of thermal stability, high-torque electric spindles use advanced cooling systems, such as water-cooling or oil-cooling, which can effectively control the temperature rise during operation. The temperature rise of high-torque electric spindles is generally controlled within 15°C, while that of ordinary electric spindles may reach 25°C or even higher. In addition, the dynamic response of high-torque electric spindles is faster, which can quickly adjust the rotational speed and torque according to the processing requirements, improving the processing efficiency.
| Indicators | High-Torque Electric Spindles | Ordinary Electric Spindles |
|---|---|---|
| Anti-load Capacity | 30% - 50% higher | Lower |
| Thermal Stability (Temperature Rise) | Within 15°C | 25°C or higher |
| Dynamic Response | Faster | Slower |
In typical last manufacturing processes such as arc carving and deep groove milling, high-torque electric spindles show excellent suitability. During arc carving, the requirements for surface finish and dimensional accuracy are very high. The high rotational speed and stable torque of high-torque electric spindles can ensure smooth carving and accurate contour forming. In deep groove milling, high-torque electric spindles can provide sufficient cutting force to quickly remove materials, reducing processing time and improving production efficiency. For example, in a certain last manufacturing project, using a high-torque electric spindle can reduce the arc carving time by about 20% and the deep groove milling time by about 30%.
High-torque electric spindles have a positive impact on processing precision, surface finish, and tool life. In terms of processing precision, the stable torque output can effectively reduce the vibration during the processing, thereby improving the dimensional accuracy of the product. For surface finish, the high rotational speed and stable operation of high-torque electric spindles can make the cutting surface smoother, reducing surface roughness. In addition, the high-torque electric spindle can provide sufficient cutting force, which can make the cutting process more stable, reducing the wear of the tool and prolonging the tool life. According to statistics, using a high-torque electric spindle can improve the tool life by about 25% - 35%.
To ensure the normal operation and performance of high-torque electric spindles, some practical operation suggestions are provided. In terms of parameter setting, the rotational speed and torque should be reasonably adjusted according to the material and processing requirements. For daily maintenance, the working environment of the electric spindle should be kept clean, and the cooling system should be regularly checked to ensure normal operation. For common fault troubleshooting, when a fault occurs, first check the power supply and control system, and then gradually check other components. If necessary, professional technical support can be sought.
Are you ready to enhance your last manufacturing efficiency with high-torque electric spindles? Get the "High-Torque Electric Spindle Selection and Debugging Manual" PDF now!
