Conic systems offers zero backlash harmonic gearing to replace planetary gear drives
Engineering360 News Desk | June 27, 2019Conic Systems has developed the new Lifetime (LT) Series precision zero-backlash harmonic gearboxes designed for high-performance direct replacement of traditional high-ratio planetary gearheads. The LT Series is available in metric sizes and NEMA 17, 23, 34 and 42 frames.
The LT Series is unique in that its zero backlash characteristic is maintained for life and high ratios of 50:1 to 200:1 are achieved in a single stage, thereby reducing the length and weight as compared to traditional planetary designs, which require multiple stages.
The proprietary harmonic cup design allows for a high number of teeth to be engaged, giving the LT Series higher torque and inertial loading capacity, along with zero backlash and repeatability better than 10 arc-sec.
An engineer can improve the accuracy of high-precision motion applications due to the unmatched repeatability and zero lost motion in the system, resolving problems such as overshoot, failure to maintain position, drive oscillation and velocity ripple.
The LT gearheads feature a precision double angular contact bearing on the output shaft, allowing for designs with high radial and axial loads. Mounting is accomplished with a quick connecting motor coupling. Adapter flanges can be modified to meet customer motor specifications.
Conic gear systems are used in precision automation, robotic and industrial applications and feature high precision, durability and long life.
These may be very good motors, but I would like an explanation of how they can have zero backlash (and for life!).
In reply to #1
My guess is it uses some some sort of spring-loaded tapered gear arrangement. If so, the gearbox may not be as efficient as a planetary drive because of the greater friction on the gear contact surfaces.
In reply to #1
Harmonic drives have a wave generator ellipsoid on the driving side that slowly push around a flexible geared spline against an inner gear (like the one in a planetary gear). So, there are no traditional set of gear teeth that directly drive another set of teeth, so there's no blacklash.
https://en.wikipedia .org/wiki/Harmonic_d rive