Rotary Actuator
Contents
Overview
The assembly of the Rotary Actuator v2 consists of a concealed 10:1 flanged gearbox between two Vention compatible plates. The bottom mounting allows for any combination of Vention’s NEMA 34 stepper servo motors. With a 10:1 reduction present on the actuator, multiple levels of torque can be achieved. The bottom plate also features mounting holes that interface perfectly with Vention extrusions. The top plate features multiple countersunk and threaded holes for all your mounting purposes.
Applications
There are several application for 4th Axis Palletizer or a Rotary Inspection Station for Universal Robots.
Technical Specifications
Maximum Torque Combinations
| Max Torque - Motor and Actuator [Nm] | |
| MO-SM-011-0000 | 80.0 |
| MO-SM-012-0000 | 45.0 |
| MO-SM-013-0000 | 20.0 |
The below figure gives the performance of the rotary actuator torque vs speed with all of Vention’s stepper motor combinations driven by MachineMotion 2.
Specifications
| Nominal Backlash [arcmin] | ≤13.6 |
| Nominal Tilting Play [degrees] | ±0.113 |
| Maximum Rotational Velocity [RPM] | 225 (dictated by motor maximum) |
| Maximun Radial Load [N] | 1100 |
| Maximum Axial Load [N] | 1000 |
| Maximum Tilting Moment [Nm] | 275 |
| Motor Compatibility | NEMA 34, 14mm shaft MO-SM-011-0000, MO-SM-012-0000, MO-SM-013-0000 |
Assembly
Motor Mounting
The Rotary Actuator is compatible with all of Vention’s NEMA 34 Stepper Servo motors. The Rotary Actuator is not compatible with any gearboxes.
Notes:
- when installing motors, apply a small amount of grease to the motor shaft so that it is lightly coated. This will reduce the possibility of fretting corrosion occurring during operation, making future removal easier.
- Be sure to tighten the two clamping screws on the input collar behind the plastic covers.
Mounting Sensors
You can add home and end sensors to a rotary actuator, and they will work the same way as home and end sensors on a linear actuator.
A home position sensor enables repeatable motion: it provides a reference point to which the actuator can “zero.” Adding both home and end position sensors means that in addition to enabling repeatable motion, you can also limit the actuator’s travel.
The home and position sensors are both inductive proximity sensors (CE-SN-004-0003). They are each mounted to a block (MO-RM-002-0007), which is itself mounted to the rotary actuator with two M6 x 35-mm screws (HW-FN-005-1035).
The sensors are activated when they approach a trigger. Two triggers—one for each sensor—are typically mounted to the underside of the top plate. Each trigger is mounted through a slot, which allows its position to be fine-tuned, with two M4 x 8-mm screws (HW-FN-010-0008).
