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The following article looks at the latest news on servo motors, drives and motors. How do we differentiate between the definitions? What can design engineers find between a stepper and a servo motor? Also, a quick update this summer on the benefits of closed-loop motor control.
A quick search of the patents issued, as well as a review of recent articles, shows a wide range of what authors call “servo stepper motors,” “closed-loop step motors,” “hybrid servo motors” and the like. Although the names may sound similar, the performance can vary quite substantially. Most of the “closed-loop stepper motors” are not actually servo motors!
Effective April 1, 2022, Dr. Fritz Faulhaber GmbH integrates subsidiary PDT Präzisionsdrehteile GmbH from Nürtingen and thereby welcomes 34 new specialists to the Schönaich location. Thanks to this strategically planned step, Faulhaber can, with a machining center of its own, respond more quickly to individual requests and expands competencies in the area of machining production.
A new modular solution for driving AGVs and AMRs from Bonfiglioli is called BlueRoll. The system consisting of a gearbox and driving wheel in the so-called basic version or with servomotors in the advanced or compact version is perfectly tailored to all customers’ needs.
Kollmorgen will exhibit their next-generation TBM2G series of frameless servomotors at the 2022 Automate Show, June 6 - 9, in Detroit, MI. Kollmorgen will also speak on the topic of Improving Robot Efficiency Through Permanent Magnet Motor Design and Selection at the breakout session on the afternoon of June 8.
Voith Turbo will present its compact, variable speed pump drives DrivAx IQ4 and DrivAx RQ4 during Hannover Messe 2022. The new drives extend the broad portfolio of the DrivAx product family. Other highlights at the drive specialist’s exhibition stand will be the self-contained servo drive DrivAx CLDP, whose ten-year success story is set to continue in new sizes, and the DrivAx CLCP, which was specially developed for robotics applications and can be seen live in action at the Voith Turbo stand.
A flagship coupling in the Huco range, the Oldham solves the problem of side forces due to misalignment. Misalignment couplings that bend or flex do cause some side loading on bearings and shafts as the coupling tries to spring back. Of course, over prolonged use this can result in rapid deterioration of bearings, extra load on the motor, and eventual coupling fatigue.
One of the fun parts of the motion industry is involvement in popular movies! Motor specifications can be a bit rough: "I need to spin a 120-pound actor (and chair) 180 degrees in one-half second. He will be sitting up-right."