Rotary Tables with Aperture

Rotary tables with aperture, also known as rotary indexing tables or rotary positioning tables, are specialized equipment used in various manufacturing and machining processes. Hollow Aperture Rotary Platforms provide a precise and controlled way to rotate a workpiece or a fixture around a central axis, allowing for accurate positioning and indexing during operations such as milling, drilling, grinding, or inspection.

A technical breakdown of the key features of TallMan Robotics Rotary Tables with Aperture

This rotary table with aperture features a through-hole along the rotation axis, enabling pass-through of cables, lasers, fluids, or workpieces. A crossed roller or angular contact bearing surrounds the central opening. Servo motor or gear reducer provides rotation. Integrated encoder mounts on the non-rotating stator.

The key features of Hollow Aperture Rotary Platforms include:

Aperture or Bore: The aperture or bore refers to the central opening or hole in the rotary table, which allows for the passage of tools, workpieces, or other components through the table. The size and diameter of the aperture can vary depending on the specific application and the size of the components being processed. 

Rotational Accuracy: Rotary tables with aperture are designed to provide high levels of rotational accuracy, typically measured in arc-seconds or microradians. This high accuracy is achieved through the use of precision bearings, encoders, and advanced control systems. Among precision devices, rotary tables with central aperture excel in accuracy and versatility.

Techncial data sheet of TMN280 serial Hollow apeture rotary table 

Production, test of hollow rotary platforms

Tailored shipping packaging uses plywood crates to protect carton loads.

               FAQs about Rotary Tables with Aperture

1. Can cables rotate continuously through the aperture?
   No, continuous rotation requires a separate slip ring assembly.
2. Does aperture size limit maximum rotation speed?
   Yes, large apertures reduce critical speed due to lower rotor stiffness.
3. What does aperture diameter specify?
   Aperture diameter measures the clear through hole at the table center.
4. How does aperture size affect bearing stiffness?
   Larger aperture reduces bearing race diameter and lowers moment stiffness.
5. Can liquid flow through the rotating aperture?
   Yes, install rotary unions on both stationary and rotating faces.
6. What encoder suits a hollow bore rotary table?
   Ring encoder with read head mounts around the aperture periphery.
7. Does the aperture need a separate cover?
   Yes, use a removable aluminum cover when not passing materials through.
8. How to clamp a hollow bore table at position?
   Pneumatic or hydraulic caliper clamps act on the internal rotor diameter.
9. Why use direct drive instead of worm gear for aperture tables?
   Direct drive eliminates gear backlash and provides smoother motion through the hole.
10. What seals protect the bearing from aperture debris?
    Lip seals with spring energizer on both sides of the crossed roller bearing.
11. Can I mount a collet chuck inside the aperture?
    Yes, but the chuck requires external actuation penetrating the hollow zone.

You are welcome to watch more projects or visit our website to check other series or load down e-catalogues for further technical data. 

Youtube: https://www.youtube.com/@tallmanrobotics

Facebook: https://www.facebook.com/tallmanrobotics

Linkedin: https://www.linkedin.com/in/tallman-robotics and we frequently post updates about rotary tables with aperture and related innovations.