The traditional motor, direct drive rotary motor selection principle

Closed and open frame type direct drive rotary motor, in a variety of applications have replaced the traditional, belt mechanical drive servo rotary joints motor system. And now a new, called modular (cartridge) DDR direct drive rotary (DDR) technology, will open frame type direct drive motor in performance advantages and all the advantages of easy installation frame motor combination, its price is better than the traditional direct drive technology much lower.

The traditional motor/drive system Today's most servo application using the traditional belt mechanical drive servo motor system. The traditional system of the initial cost attractive, and performance has been in various applications verified, these applications include: electronic assembly, packaging, aviation and defense. However, people often didn't notice that this kind of system in the design and integration of the additional costs, these additional expenses for pulley, gearbox and belts, and so on need to add the mechanical parts. These parts in the whole machine life continuously wear, it also increased the total cost of life. Positioning error and tuning difficulty is the common problem in the system, they are made of flexible transmission and invalid clearance cause.

Belt and pulley and transmission maintenance and these easy wear parts replacement all need to pay a high price: first of all, the user had to rotary union more parts inventory management; Secondly the additional components caused by system failure will increase system unplanned outage time, make the machine production decline. Direct drive rotary motor Can directly generate a driving role of rotating machine in essence but is a great moment of permanent magnet motor, it directly and load connection. This kind of design eliminates all mechanical transmission parts, such as gear transmission, belt and pulley and coupling.
Direct drive rotary system for designers and users has brought a lot of benefits. Because a mechanical transmission needs regular maintenance and will frequently causes unplanned outage, so, direct drive rotary motor technology fundamentally improve the reliability of the machine, reduce the maintenance time and cost. By eliminating mechanical transmission brings flexible, direct drive design to avoid the motor and load for inertial matching trouble, at the same time, position and velocity accuracy can also fiber optic rotary joint improve 50 times. Direct drive motor have brought another benefit: acoustic noise reduction as high as 20 db.