Optimal gear design for medical applications（最优医疗设备设计应用程序）.pdf

Optimal Gear Design for Medical Applications Alexander L. Kapelevich ■ AKGears, LLC, Thomas M. McNamara ■ Thermotech Co. ABSTRACT case, all possible gear solutions are inside the so- called block-contours [2]. In order to improve gear Modern achievements in Medical Design require performance beyond the block-contour limit, the engineers to consider using gear drives for non-standard basic rack or individual basic racks for numerous applications, such as a wide variety of the mating gears should be considered. Besides, pumps, surgical and dental instruments, hospital and there is a clear trend to gear customization. handicap equipment, disposable devices, data Practically all medical gears are designed acquisition and recording systems, etc. Medical specifically for a particular application. applications set specific performance priorities that Interchangeability of the traditionally designed are very different than the more traditional gear gears does not provide any benefits for medical applications like, for example, propulsion or gearing. Also, low tooling inventory is not that positioning gear transmissions. These performance important. Besides, the gear generating fabrication priorities may include: tight space limitations process (or hobbing), which uses the generating (miniature gear drives), extremely high RPM, low rack as a cutting edge of