Servo gear
As servo gear units are gear referred various designs that are characterized by a high torsional stiffness characterize and low backlash and therefore meet the requirements of highly dynamic applications. They have high positioning and speed accuracy and can withstand extreme angular accelerations and lateral forces . Today planetary or eccentric gears are mainly used as servo gears . On the other hand, angular gearboxes are often used in tight installation spaces. In its function as a converter of torque and speed , the gearbox is the central component of a servo geared motor.
Requirements for a servo gear
Due to the mostly short cycle times and the resulting high accelerations in today's servo applications, special requirements are placed on servo gear units :
- low mass moment of inertia ,
- low backlash,
- high torsional stiffness,
- high efficiency ,
- Transmission of very high torques due to high acceleration values,
- low vibration,
- ideally whole number translations,
- durable and low-maintenance,
- compact and light.
General gear overview
Depending on the direction of the power flow, a distinction is made between the following gear types:
- Coaxial gear
- Parallel shaft transmission
- Angular gear.
In the case of coaxial and parallel shaft gears, the input and output shaft lie in one plane. Thus the power flow is straight. With angular gears, the driving and the driven shaft are perpendicular to each other, the power flow is deflected at right angles. The types of gear most commonly used in servo technology are:
- Planetary servo gear
- Servo bevel gear units
- Spur gear
- Bevel gears
literature
- Frank Rieg, Manfred Kaczmarek (ed.): Pocket book of machine elements. Fachbuchverlag Leipzig in Carl Hanser Verlag Munich 2006, ISBN 978-3-446-40167-9
- Drive engineering practice - servo technology. Edition 09/2006. (PDF, 6.5 MB)