Application Of RV Robot Reducer

First, the working principle of the handling palletizer
Structural composition
Robotic arms: Usually multi-articular structures (4-6 axes), responsible for grasping and moving goods.
End effector: such as a suction cup, fixture, or gripper, used to adsorb or hold cargo.
Transmission system: including motor, reducer, gear, etc., drive the movement of the robot arm.
Control system: Through PLC or industrial computer programming, path planning and motion control.
Sensor: detects the position, weight and stacking status of the goods to ensure operation accuracy.
Work flow
Detection and positioning: The location of the cargo is determined by a vision system or sensor.
Grab cargo: End-effector adsorbs/grippers cargo.
Path planning: The robot arm moves the cargo to the target stack according to the preset trajectory.
Precise stacking: Ensure stacking stability and efficiency with high-precision reducers and servo systems.
Core requirement
High load capacity: need to bear the weight of the goods and the inertial force of the robot arm itself.
Repeated positioning accuracy: the error is usually less than ±0.1mm.
Long-term stability: Adapt to high-intensity, high-frequency working environment.
Second, RV reducer in the palletizer application
Because of its high rigidity, high torque and high precision, the Rotary Vector Reducer is often used in key positions such as the base joint and the big arm joint of the palletizer robot arm to support heavy loads and complex movements.
Key parameters of selection
Rated torque: According to the mechanical arm load calculation, need to leave a safety margin of 20%-30%.
Deceleration ratio: common range 80:1~120:1, matching servo motor speed and output torque.
Accuracy (return error) : Generally ≤1 arcmin (≤0.5 arcmin in high-precision scenarios).
Size and weight: need to fit the installation space of the arm joint.
Three, recommended RV deceleration model number
1. Imported brands
Nabtesco (Japanese Teijin)
RV-E series: Economical, suitable for small and medium-sized palletizers (such as RV-40E, RV-110E).
RV-C Series: Highly rigid design for heavy duty palletizing (e.g. RV-320C, rated torque 3200Nm).
Sumitomo (Japan)
Big RV Series: High-torque models (e.g. SHF-42-120, reduction ratio 120:1, torque 4200Nm).
2. Domestic brands
Qinchuan Machine tool (QY series)
QY-RV-110: Domestic alternative, performance close to the imported mid-range model.
Four, selection suggestions
Load matching:
Lightweight palletizer (load ≤50kg) : optional RV-40E or ZK-RV-40E.
Heavy duty palletizer (load ≥200kg) : RV-320C is recommended
Accuracy requirements:
High-precision stacking (e.g., electronics, pharmaceutical) : The Nabtesco RV-C series is preferred.
General scenario: Domestic double ring, Qinchuan can meet the demand, the cost is reduced by 30%-50%.
V. RV reducer vs. harmonic reducer
RV reducer advantages:
It is more suitable for the base and the arm joint of the palletizer because of its high rigidity and strong impact resistance.
Application scenario of harmonic reducer:
It is often used in the wrist joint of the robot arm, suitable for light load and high speed scenarios.