Actuator
ROBOT Joint Module
Overview
The Robot Joint Module is a core component that drives robot joints and actuators, integrating motor, reducer, sensors, and controller into a high-performance unit.
Optimized for robot designs requiring precise control and high torque.
Features and Components
The Robot Module is a core system to drive robot joints or actuators, composed of the following integrated components.
Adapter
- Spline join for precise positioning.
- Custom adapters can be designed depending on the application.
Friction Brake
- Provides safety factor margin against robot load.
- Shortened brake on/off response time.
- Optimized for pad wear, temperature effects, and residual torque.
- Prevents heat damage during emergency stop (1–2 stops).
Gear Reducer
- High durability with minimal backlash (1–5 arc-min).
- High torsional rigidity suitable for precision control.
- Bearing preload and allowance for thermal expansion.
- Reduction ratio: 1:50 ~ 1:160
Absolute Encoder
- High-resolution detection of joint absolute position (angle).
- Maintains zero position even after power restart.
- Optical type
- Resolution: 17–22 bit
- EMI shielding and zero calibration
Casing
- Made of aluminum alloy.
- Includes bearing seats, stator fixing slots, and cable channels.
- IP65 rating ensured.
- Structural rigidity vs Balancing lightweight design.
- Integrated thermal path for motor heat dissipation.
Torque Sensor
- Measures actual torque transmitted to the reducer output shaft.
- Strain gauge type
- Magnetic induction type (non-contact)
- Ensures linearity within rated torque range.
- Zero-point adjustment and calibration.
BLDC Motor
- High pole design for high torque density.
- Incorporates cooling structure.
- Precision tolerance applied to rotor concentricity.
DC Inlet
- Integrated control of DC input, encoder signals, brake control, and torque sensor output.
- Ensures harness vibration durability and optimized fastening torque.
- Waterproof function (IP65)
Inquiries
Kisuk Ahn (kisuk.ahn@naraauto.com)