When a conventional planetary gearhead is mounted to a engine, the sun gear should be aligned to pay for runout error of the servomotor shaft. Without proper alignment, load can be unevenly distributed over the planetary gears and the drive train operates less efficiently. Also, gear life can be shortened. These alignment adjustments require skills that aren’t normally obtainable in the field.
Achieving a more substantial speed reduction ratio requires a smaller sun gear diameter (or an exceptionally large ring gear). This smaller sun gear is usually integral using its shaft, which should be smaller aswell, thereby reducing its strength and its own torque or load capability.
Several types of gear trains, including those with planetary gears, are commonly used to obtain this the best reduction ratio. Planetary gear trains offer high stiffness and low backlash (needed for accurate procedure), plus even load distribution (to obtain maximum torque). Some planetary versions combine external-tooth pinion-and-gear units with planetary gear sections to simplify set up and boost speed. These servo motor and gearbox hybrid gearheads are defined later.
A simple planetary gearhead has some limitations regarding ease of installation, load capacity, and speed, which are related to the sun gear.
As a rule, the designer usually obtains the ideal speed decrease ratio by matching the inertia of the electric motor and gearbox with the inertia of the driven load. This inertia matching minimizes power reduction in the motor, making it run more efficiently.
Servo motors deliver precise control of placement, velocity, and acceleration in the closed-loop systems of servomechanisms. Servo motors require a servo drive – this uses the feedback data to precisely control the position of the motors path and rotation distance.
Cone Drive’s stainless steel precision movement gearboxes are made for sterile manufacturing conditions. The product’s smooth surface and curved contour permits easy cleaning and bacteria-free surfaces, perfect for food processing and pharmaceutical applications. The product is designed and rated to IP69k offering maximum security against contaminant ingress in addition to leak free operation.
Servomotor selection usually begins with the designer seeking to reduce the engine size by utilizing a gearbox to lessen speed and increase torque. Speed reduction allows rapid acceleration and deceleration of large loads utilizing a small, less expensive motor.