No backlash for servo actuators
A
Harmonic Drive UK product story
Edited by the Engineeringtalk editorial team
Feb 17, 2006
Miniature servo actuators with fully integrated construction comprise mini or super-mini harmonic drive gear box, DC servo motor and feedback device.
Harmonic Drive has launched a range of low cost miniature servo actuators with a fully integrated construction, comprising a mini or super-mini harmonic drive gear box, DC servo motor and feedback device.
This construction ensures that the PMA servo actuators let design and manufacturing engineers reduce the time and cost associated with system design, specification and construction.
The actuators also allow system performance, precision and reliability to be improved, while size and weight are reduced.
There are four gear sizes - 5, 8, 11 or 14 - and they are for use in demanding applications, where highly accurate motion control and high torque capacity are required, or where operating space or weight are restricted.
Applications include optical equipment, precision engineering equipment, measuring and testing machines, medical equipment, materials handling equipment, assembly automation and semiconductor production machines.
The incorporation of harmonic drive technology practically eliminates the effects of backlash, while the integrated DC servo motor provides smooth torque curves, with output speeds up to 200rev/min, and reduced rotor inertia as a result of ironless winding.
The built-in encoder means the actuators can interface directly with all standard servo controllers.
There is the option of optical or magnetic sensing with resolutions of 256, 512, 500 or 100ppr.
Available in various output torques and speeds, the actuators can be configured to withstand maximum rotor temperatures of up to 155C and can operate at temperatures between 0 and 40C.
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