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Characteristics of the AP and HP servo gears

Design of the servo gears

General The servo gears described here are available in two series as planetary gears orhybrid gears. With one-stage reduction from 4 : 1 to 10 : 1, two-stage up to100 : 1, and options like different output shafts they can be adapted to various applications. AP and HP servo gears can be used in combination with virtually allESR servo motors because of oblong holes in the motor mounting flange – each gear frame size is available with two flange designs. Design In the main units of the AP and HP servo gears evolvent gear wheels provide thereduction and the power transmission. Optimally arranged as planetary gears,partly with a preceding spur gear, achieve high power density and great reduction variety. With housings of five different sizes the gears can be optimally adapted to all drive applications. The unique design, consisting of modular units, allows the connection of angular or belt driven back gears. Planetary gears AP AP planetary gears are one-stage and two-stage planetary gears with torsionalbacklash ( 3 angular minutes). The compact axial design offers a variety ofreductions and smooth run.Excellent torsional rigidity is achieved by using very hard material in a compactdesign. This ensures low vibrations and high accuracy of the entire motion.The gear series comprises 5 frame sizes AP-010 to AP-050 with output torquesof 32 to 1500 Nm (peak). Hybrid gears HP HP hybrid gears combine the advantages of planetary gears with those of spurgears. The output unit of HP gears is a robust precision planetary gear with fixed reduction. This design offers high output torque at high power density and best overload ability. With a preceding spur gear, designed as built-in module, twelve different gear reductions can be realized in a housing of the same size.An extremely low moment of inertia at the input shaft in the spur gear or theplanetary gear provides for high dynamics.Even under large-volume production conditions a torsional backlash of 3 angular minutes is achieved by optimized evolvent gear wheels producedwith latest technology. This is required for high repeating accuracy in positioning mode.Reasonable priced HP gears with a torsional backlash of 15 angular minutesare available for standard applications.The gear series comprises 3 frame sizes HP-010 to HP-030 with output torquesof 15 to 360 Nm (peak).
ESR Pollmeier GmbH, D-64372 Ober-Ramstadt, tel. +49 6167 9306-0, fax +49 6167 9306-77, www.esr-pollmeier.de