Product category:
Gears, brakes, couplings and engines
News Release from: Micromech | Subject: TR range planetary gearheads
Edited by the Engineeringtalk Editorial
Team on 21 December 2001
Gearboxes save the need for extra design
work
Micromech has introduced the TR range of low cost BGT planetary gearheads offering repeatable positioning resolutions of between 0.1 degree and 15 arc/secs (0.004 degree) in motor half-step mode
Engineers that require to index a rotary axis in exact degree increments using a Stepper Motor meet the problem that the stepping resolution will need to be a sub-multiple of 360 or they experience a "remainder error" at the end of the revolution Micromech has now introduced the TR range of low cost BGT planetary gearheads offering ratio variants in 9:1, 18:1, 36:1, 72:1, 90:1, 144:1, 180:1, 216:1 and optional backlash
This article was originally published on Engineeringtalk on 26 Feb 2001 at 8.00am (UK)
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Specifications of 15 arcmin/0.25 degree (standard); 10 arcmin/0.17 degree; 5 arcmin/0.08 degree.
Repeatable positioning resolutions of between 0.1 degree and 15 arc/secs (0.004 degree) can be obtained in motor half-step mode (400 positions per rev) without needing expensive microstepping drives or feedback devices.
In addition to stepping motors many servo driven applications also experience difficulties where 'full circle' remainders have to be programmed out or compensated for in the software program to ensure the next revolution starts from datum.
These gearboxes will therefore save the need for the extra design work to achieve such corrections and therefore avoid further potential software complications.
In the range six size variants are available as well as right-angle drive versions.
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