Technical bottlenecks in direct drives

The development of traditional mechanical transmission has been close to the limit today, encountering technical bottlenecks. Mainly embodied in the following three aspects:

Speed bottleneck: the traditional mechanical transmission speed has reached its limit, high speed brings problems, including high noise, high friction loss, energy loss and so on. Accuracy bottleneck: the traditional mechanical transmission in the accuracy of the gap, elastic deformation, and many other links affecting the accuracy. Many parts of the manufacturing error accumulated directly make the whole machine accuracy is reduced.

Accuracy bottleneck: in order to make progress in accuracy and speed, the traditional mechanical transmission device has to pay higher manufacturing costs, and cost increases and performance improvements are not proportional.

Direct drive technology as the world in the last decade, the emerging transmission technology, with traditional transmission can not be compared with the superiority. Direct drive technology breaks through these bottlenecks:

In terms of speed, in the manufacturing equipment, the traditional movement can be realized in 15 m/min linear motion speed and dozens to tens of revolutions per minute indexing speed. And after the application of direct-drive technology, the linear motion speed can be increased to more than 150 meters/minute, and the rotary table speed can reach several hundred revolutions per minute. This means that productivity can be increased by more than 10 times.

In terms of precision, direct drive technology can easily achieve a few thousandths of a millimeter or angular second sensitivity on the equipment, while most of the traditional mechanical drives can only achieve a few hundredths of a millimeter or angular classification of the spirit density. Direct drive can more than double the combined accuracy of the device.

In terms of equipment life, direct-drive technology reduces mechanical transmission parts, reduces wear and tear, improves equipment life, and saves energy.

In addition, direct-drive technology eliminates mechanical drives, which saves on the cost of the original supplemental materials and manufacturing costs of the parts, thus reducing the overall cost of the equipment.

In general, direct-drive technology can make the equipment processing efficiency increased by 3-5 times, accuracy increased by 3-5 times, so that the comprehensive value of the equipment increased by 3-5 times. To machine tools, for example, the ordinary use of mechanical transmission CNC machine tools priced at 30-50 million yuan, the use of direct-drive technology, high-precision CNC machine tools can be sold to 1-2 million yuan.

The use of direct-drive technology has become a symbol of foreign technology leaders in the field of CNC machine tools; will also become the focus of the domestic technology competition in the field of CNC machine tools. Direct-drive technology at home and abroad, the technical level of large differences, the international community began to apply in the early 1990s, and now enter the popularization stage; domestic research only began in the mid-1990s, and successful applications are still relatively small. Imported direct-drive parts and components are expensive, and suppliers use bundled sales strategy to consolidate its monopoly, and there is a risk of embargo, in fact, large, high-precision direct-drive CNC machine tools are embargoed.

Direct drive technology is used in machine tools and other precision equipment is also widely used in elevator control, logistics transmission and other fields.