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Application Note: Torsional Stiffness in Gearheads

From Electromate
 

 
Gearhead stiffness refers to the torsional stability of a gearhead's output shaft and geartrain. Gearhead stiffness can affect servo system stability in several ways. First of all, the torsional displacement of the shafts and gears may cause the load to lag behind the position of the motor. The possibility exists
Product Announcements
Bayside Motion / Trilogy Motors - Brands of Parker Hannifin Electromechanical - Stealth ® Gearmotors & Gearheads
Parker Bayside's Stealth® Gearmotors represents the first time a brushless servo motor and a helical planetary gearhead have been integrated into a single product. Previously, engineers needing a gear... (read more)
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A new gearhead from Harmonic Drive LLC delivers less than 3 arc-min positional accuracy in a package size that is just 22mm (square) x 17mm long. Maximum torque is 24 in-lb. (read more)
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Harmonic Drive LLC has introduced a new planetary gearhead, which relies on technology borrowed from its line of harmonic drive gearing. This new gearhead, the Harmonic Planetary, utilizes a non-rigid... (read more)
Electromate - NEW High Precision Zero-Backlash Mini Gearhead
The CSF-XHF Size 11 gearhead from Harmonic Drive LLC delivers 1.5 arc-min positional accuracy in a package size that is just 43mm (square) x 38mm long. (read more)
Huco Dynatork - High Speed Stainless Steel Coupling
The characteristics of the bellows coupling can be modified by varying the number and spacing of convolutions. This type of coupling has high torsional stiffness and may be used in any drive system... (read more)
CGI, Inc. - New Planetary Servo Gearheads, Innovation & Value
New servo motion gearhead designs. CGI, Inc., announces its new Predator and Raptor line of precision gearheads. Both lines utilize optimized gear design and highest quality materials to meet even the... (read more)
Automation Group - Parker Hannifin Corporation - Gearheads and Gearmotors
Parker offers a range of Gearheads and Gearmotors with various configurations for motion control applications. (read more)
Parker Hannifin/Electromechanical Automation - MPJ High-Torque Servo Motor
Part of Parker's MaxPlusPlus (MPP) servo motor family, the MPJ is designed for the demanding applications found in today's high-performance servo systems. (read more)
Harmonic Drive LLC - New, Harmonic Planetary® Gearhead - Size 20
New, Harmonic Planetary® Gearhead - Size 20, Backlash less than 1 arc-min for Life... (read more)
Harmonic Drive LLC - New, Harmonic Planetary® Gearhead - Size 50
New, Harmonic Planetary® Gearhead - Size 50, Backlash less than 1 arc-min for Life... (read more)
Topics of Interest
Speed reducer is termed a gearhead if it is entirely and directly mounted onto a motor, not just the shaft. Therefore, other speed reducers (gearboxes) are typically coupled with the shaft and then... (Read More)
4.5.3 Suspension Systems and Position Control In the galvanometer and resonant scanners, the bearings and suspension systems are the principal determinants of detailed scan uniformity. A given radial... (Read More)
Servo systems more often than not require that mechanical components have a high torsional stiffness in order to perform properly in applications requiring rapid acceleration and deceleration of high... (Read More)
APPLICATIONS  The type of flexible coupling most suitable for a particular application depends upon a number of factors, including power, speed of rotation, shaft separation, amount of... (Read More)
3.1 INTRODUCTION The stability of rigid bodies is illustrated clearly by the well-known example of a ball on curved planes (Fig. 3.1). Resting on a concave surface it is stable [Fig. 3.1(a)]. (Read More)