Direct-drive Motors

Direct drives eliminate the need of mechanical transmission elements and enable a direct coupling of the payload to the drive. This enables a drive with high dynamic response without hysteresis.

These direct drive systems can be used in: rotary or indexing tables, pick and place robots, grinding machines, wind/hydro generators, elevators, telescope or radar stations and many other applications.

High Torque Motors

A torque motor is a rotary brushless servomotor optimized for low speed operation. It has a high number of poles, output speed less than 1000 rpm. There is no need for mechanical transmission element such as a gearbox.

The most unique feature of a torque motor concerns the physical dimensions. They have a relatively large diameter to length ratio, and they also have a rather short axial length. Additionally, torque motor can simultaneously have both a very large outer diameter and inner diameter, resulting in a motor that is a thin ring.

One important outcome of this characteristic is that the mass is quite low as a function of the diameter. Also, the large diameter allows very high torque to be developed. more...

Linear motors

The linear motors have two parts: the primary and the secondary. There is no mechanical contact between them. They work as rotative motor. One armature, named “rail”, “tracker” or “ruler” is longer and it is fixed. The shorter armature is named “slider” or “forcer”.

 

 

The imaginative transformations of a rotary motor in a linear flat motor and in a tubular linear motor are presented bellow.

Transformation of a rotative motor in a flat linear motor

 

 

 

 

 

Transformation of a rotary motor in a tubular linear motor

 

 

With this design, the load is connected directly to the motor. Direct linear motion is achieved without any turn of the rotary into the linear one. more...

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