SMD Gearbox | 31st August, 2023.

In the intricate landscape of motion control, servo gearboxes emerge as irreplaceable components, enabling precise movements and power transmissions across diverse industries. This comprehensive walkthrough delves into the world of servo gearboxes their varied types, and unique features by SMD Gearbox, a frontrunner in precision engineering.

Servo gearboxes represent the pinnacle of mechanical engineering, seamlessly integrating with servo motors to translate rotational motion into controlled and precise movements. Let's delve into the specifics of five types of servo gearboxes:

1). Inline Planetary Servo Gearbox: Inline planetary servo gearboxes feature a compact and efficient design, aligning input and output shafts. Utilizing a planetary gear system, they ensure high torque transmission, minimal backlash, and exceptional efficiency. The key components of an inline planetary servo gearbox include:

• Sun Gear: The central gear is driven by the servo motor.
• Planet Gears: Gears meshing with the sun gear and rotating around it.
• Ring Gear: The outer gear enclosing the planet gears.

Working Principle: The sun gear rotates the ring gear around it. The ring gear is fixed. So when it rotates. The velocity at one end of planet gear gets add up and on the other end, it gets cancelled out. This makes the gear spin and revolves around the ring gear. Due to this, we achieve a reduction ratio. This planet gear is attached to the carrier which turns the output shaft.

SMD Offers an inline planetary gearbox with (SP) Series. SMD Offers variants in planetary gearboxes like

1). SPE: - Planetary gearbox with square flange in output and shaft
2). SPRE: - Planetary gearbox with Round Flange in output and shaft
3). SPFE: - Planetary gearbox with flange as an output for greater load mounting.

Specification:

1) Accuracy of 1-12 Arc-min
2) Nominal Torque output of 17 to 2200 Nm
3) Reduction ratio from 1:3 to 1:100
4) Self-lubricating seal shut design. And easy to install.

2). Right Angle Gearbox: Right angle gearboxes transmit power between two intersecting shaft. This configuration allows for torque to be transmitted from one axis to a perpendicular axis- using rotation to transfer power. Right-angle gearboxes are used in numerous types of mechanical design, including automotive and industrial applications.
The key components are :

• Bevel Gears: Conical gears mounted on intersecting shafts.
• Spiral Bevel Gears: Helical teeth for smoother operation and higher load capacity.

Working Principle: The meshing of bevel or spiral bevel gears at right angles enables power transmission between non-parallel shafts. And the output is counter-clockwise while input is clockwise.
SMD Offers an inline planetary gearbox with (SRA) Series. SMD Offers variant in right-angle gearbox like :

1). SRAS: - Right angle gearbox with shaft end
2). SRAH: - Right angle gearbox with hollow shaft
3). SRAC: - Right angle gearbox with a collar on output for mounting

Specification:

1). Accuracy 3-15 Arc-min
2). Nominal torque 44 to 1390 Nm
3). Available reduction ratio 1:1 to 1:200
4). Self-lubricating seal shut design easy to install

3). Hollow Rotary Gearbox: : SMD Hollow rotary gearbox, ST Series resembles a hollow rotary table that offers optimized load capacity and torque. Depending on the application the client can choose between the motors as this is a very compact mechanism and can be mounted in any position.
This gearbox is mostly a combination of servo motor and turn table and is mostly used in indexing. This gearbox takes full advantage of the servo motor giving the mechanical team great scope for designing

Key Specification of ST series gearbox:

1). Accuracy 0.5 Arc-min
2). Torque capacity 1 to 400 Nm
3). Available reduction ratio 1:10 and 1:18
4). Large concentric hole provided for organized wiring
5). Excellent repeatability

4). Harmonic Gearbox: Harmonic gearboxes utilize an innovative wave generator mechanism to achieve high gear reduction ratios and exceptional precision. The key components of a harmonic gearbox include:

• Wave Generator: Flexible spline deforming under the influence of the wave generator.
• Flex spline: Thin-walled spline engaging with the circular spline.
• Circular Spline: Rigid outer ring with internal teeth.

Working Principle: The deformation of the flexible spline by the wave generator causes the flexspline to engage with the circular spline, resulting in controlled motion transmission. This unique mechanism offers zero backlash and high torsional stiffness, making harmonic gearboxes ideal for ultra-precision applications.

SMD Harmonic gearbox offers two variants SCSG series. This comes with flange output and SSHG series with hollow bore inside. The SSHG series is mostly used in conjunction with a belt and pulley for power transmission from a motor. In tight spaces like 5th or 2nd Axis of an industrial robot

Key Specification :

1). Accuracy less than 20 ARC-sec
2). Nominal Torque 5 to 382 Nm
3). Reduction ratio available 1:50, 1:80, 1:100, 1:120, 1:160
4). Short Axial dimension
5). Used in robotics industries

5). Cycloidal Gearbox: Cycloidal gearboxes leverage cycloidal motion principles to achieve high torque transmission and smooth operation. The key components of a cycloidal gearbox include:

• Eccentric Cycloidal Disks: Disks with off-center pin arrangements.
• Cycloidal Ring: Gear with a lobed profile engaging with the disks.

Working Principle: The rotation of the eccentric cycloidal disks causes the lobes to engage with pins on the cycloidal ring, resulting in a cycloidal motion profile characterized by high reduction ratios and shock-load resistance.

SMD SRV Series key features are

1). Suitable for robotic arm, palletatizer
2). Accuracy less than 1 Arc-min
3). Available reduction ratio 1:51 to 1:200
4). Nominal torque 110 Nm to 6135 Nm

• Good After Sales Service: SMD prioritizes customer support, providing comprehensive after-sales services such as maintenance, repairs, and technical assistance. Their responsive and knowledgeable support team ensures minimal downtime and optimal performance for customers' systems.

• Strong Technical Team: With a team of skilled engineers and technicians, SMD offers expert guidance and customization options to tailor gearbox solutions to each customer's unique requirements. From design consultation to product optimization, their technical expertise ensures that customers receive optimal performance and reliability from their servo gearboxes.

Conclusion:
In the dynamic landscape of precision engineering, servo gearboxes play a crucial role in driving efficiency, accuracy, and reliability across industries. With a diverse array of offerings and an unwavering commitment to customer satisfaction, SMD emerges as a trusted partner in delivering bespoke solutions tailored to meet the evolving needs of today's engineering challenges. Whether it's inline planetary gearboxes for robotic arms or cycloidal gearboxes for heavy-duty machinery, SMD's dedication to excellence ensures that every movement is executed with precision and finesse