Tecnotion Adds to Automation Products with New High-Density Torque Motors

Tecnotion, a supplier of linear and direct drive motors for automation systems, has developed its most powerful series yet of torque motors for integration into industrial machinery. The compact new QTL series are the company’s largest torque motors to date and feature particularly high torque densities. The QTL family is shown above, left, without cooling ring and, right, with cooling ring. 

Permanent-magnet motors that rotate along an axis, torque motors typically are used where integrated rotary movement is required for OEM machinery and conventional servo motors are not cost effective and suitable. These are frameless, designed to be assembled into a machine structure and feature a spacious open inner diameter to have plenty of room for wire and cable feedthrough. Tecnotion will be introducing them at SPS Smart Production Solutions fair in November in Nuremberg. 

Exploded view from a QTL-A 310-85 

The low stack height of the brushless motors in combination with the diameter results in a high torque density suitable for applications such as tool changers, rotary indexing tables, printing, material handling, packaging and laser cutting. The series comes in four diameters from 210 to 310 mm and three heights from 65 to 105 mm. They are available with or without a cooling ring. The largest motor in the 310 series can reach an ultimate torque of up 779 Nm. The maximum speed for the smallest motor in the 210 series is 779 rpm at 680 Volt DC. 

TM3 coil unit on a curved magnet track 

A specialist in direct drive motor technology, Tecnotion is also the developer of an innovative curved magnet track system for automation markets that enables a linear motor to move over a closed-loop and highly customizable track. The tracks can accommodate complicated curve movements using a traditional iron core linear motor. 

Tecnotion developed the curved tracks to minimize force losses. Their electromagnetic design provides low cogging and, by using the right algorithms, very smooth motion can be achieved, says the company. Precisely placed magnets provide smooth movement through the entire curve which is a different situation than with systems that use regular straight magnet tracks to form a curve. Even though the motor will move in such systems, movement and vibration can become unpredictable and a lot of force can be lost because the magnets are not at defined or ‘set’ distances. 

The company has existing curved magnet designs at hand, specifying a radius and magnet track width. Large projects with curved magnet tracks are customizable by adapting the number of segments in conjunction with standard radius curved tracks. 

Formerly a part of Philips, Tecnotion specializes solely in direct drive technology. Based in Almelo, The Netherlands, it provides its linear and torque motors primarily to the semiconductor, electronics, display, machine tool, factory automation and robotics industries. It has production plants in The Netherlands and China. 

For more info, visit: www.tecnotion.com.