Double Lead Worm Gear Hollow Rotary Tables

Double lead worm gear hollow rotary tables combine the features of a worm gear with a hollow design, allowing for efficient rotation and positioning of objects or tools while providing an open center that can accommodate other components, such as shafts or cables.

A double lead worm gear hollow rotary table rotates a load with zero backlash. The worm has two different lead angles on the same thread. One lead angle engages the gear teeth. The other lead angle eliminates clearance. You adjust the worm axially to set preload. The hollow center allows cables or lasers to pass through.

Here We introduce Double Lead Worm Gear Hollow Rotary Tables from TallMan Robotics

Key Features of Double Lead Worm Gear Hollow Rotary Platforms:  1 arc minute,adjustable backlash

Grinding gear design, can bear higher moment of inertia and impact force
Adopting a dual lead worm structure with adjustable backlash
High rigidity, high load, output integrated cross roller bearing

Model Selection code:

Technical Parameters:

What are the features?

A double lead worm gear has two starts, allowing for faster rotation and greater positional accuracy compared to single lead designs.
Hollow Design: The hollow feature provides an unobstructed passage through the center of the table, which is useful for applications where routing of other components (like coolants, sensors, or materials) is necessary. This design also helps in reducing the overall weight and can lead to simplified setup in automated systems.
Rotary Motion: These tables enable precise rotary motion, making them suitable for tasks like CNC machining, indexing, and assembly processes.
They are often used in applications needing high precision, such as aerospace, automotive, and medical device manufacturing.
Load Capacity: These rotary tables are engineered to support varying loads and can be designed to handle heavy components without compromising the precision of the movement.

FAQs about Double Lead Worm Gear Hollow Rotary Tables

• What is a double lead worm gear in a rotary table?

       Double Lead Worm Gear Hollow Tables have two different lead angles on one worm. One lead drives the gear. The other lead removes backlash. You adjust the worm axially to set zero clearance.

• What is the typical backlash for this rotary table?
  A double lead worm gives near zero backlash. You can achieve less than 1 arc minute. Some tables reach 3 arc seconds.
• Do I need a brake on a double lead worm rotary table?
  The worm gear self-locks in most cases. A brake is not necessary for static loads. For vertical mounting, add a brake for safety. Check the back driving torque first.
• Do I need an encoder on the rotary table?
  Yes, for closed loop control. Mount the encoder on the motor or table. A direct encoder on the table eliminates gear errors. The double lead worm has very low gear error.
• Can I pass coolant through the hollow center?
  Yes, you can pass coolant or air. Use rotary unions for rotating coolant. The hollow bore has no seals inside. Add your own seal for pressurized fluid.

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