RCSD Cup-shaped Strain Wave Gear

Strain Wave Gear (also known as harmonic gearing) is a type of mechanical gear system that uses a flexible spline with external teeth, which is deformed by a rotating elliptical plug to engage with the internal gear teeth of an outer spline.

The composition of the harmonic gear transmission device
–Circular spline: rigid internal gear, generally 2 teeth more than the flexspline, usually fixed to the housing.
–Flexspline: a thin cup-shaped metal elastic part with a gear on the outer ring of the opening part, which deforms with the rotation of the wave generator and is usually coupled with the output shaft.
–Wave generator: consists of an elliptical cam and a flexible bearing, which is usually coupled to the input shaft. The inner ring of the flexible bearing is fixed on the cam, and the outer ring can be shaped into an ellipse by the elasticity of the ball implementation.

Product Detail

REACH RCSD Series

RCSD-ST Series

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Working Principle

As a reducer, the Strain Wave Gear are usually driven by a wave generator and output by a flex spline. When the wave generator is installed in the inner ring of the flexspline, the flexspline is forced to undergo elastic deformation and is elliptical; the teeth of the flexible spline of the long axis are inserted into the grooves of the circular spline and fully engaged; the two splines of the short axis The teeth do not touch at all, but disengage. Between engagement and disengagement, the gear teeth are engaged or disengaged. When the wave generator rotates continuously, the flexible spline is forced to deform continuously, and the teeth of the two gears change their working states repeatedly when they are engaged, or disengaged, resulting in the so-called staggered teeth motion, realizing the motion transmission between active wave generator and flexible spline.

Advantages

Harmonic gearing has some advantages over traditional gearing systems:
No backlash
Compactness and light weight
High gear ratios
Reconfigurable ratios within a standard housing
Good resolution and excellent repeatability (linear representation) when repositioning inertial loads
High torque capability
Coaxial input and output shafts
High gear reduction ratios are possible in a small volume

Applications

Strain wave gears are widely used in robots, humanoid robots, aerospace, semiconductor manufacturing equipment, laser equipment, medical equipment, metal processing machinery, drone servo motor, communication equipment, optical equipment, etc.

Multi-axis robots

humanoid robot

Non-standard automation equipment

Rehabilitation medical wearable equipment

Communication equipment

Medical equipment

Drone Servo motor

Optical equipment

Aviation and Aerospace

RCSD Strain Wave Gear

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REACH RCSD Series

RCSD series is a cup-shaped ultra-thin short cylinder structure, the whole machine adopts flat structure, with the advantages of small size and light weight. It is very suitable for robotics, aerospace, semiconductor manufacturing equipment and other space-constrained applications.
Product Features
–Super thin, compact
–Hollow structure
–High load capacity
–High position accuracies

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REACH RCSD

RCSD-ST Series

The RCSD-ST series is a cup-shaped short cylinder structure, which takes up less space than the RCSD series, and the advantages of small size and light weight are more obvious, making it ideal for applications requiring high space restrictions.
Product Features
–Ultra-flat structure
–Compact and simple design
–High static torque capacity
–Input and output coaxial
–Excellent positioning accuracy and rotation accuracy

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