CNC rotary table

A CNC rotary table is a precision work-positioning device used in metalworking and machining operations, particularly with CNC machines such as milling centers or drilling machines. It allows a workpiece to rotate accurately around a fixed axis, enabling complex machining tasks like cutting, drilling, or engraving at specific angular positions without the need to manually reposition the workpiece. This device often adds a fourth or fifth axis to CNC machines, significantly enhancing machining flexibility and precision for complex components. The rotary table can operate in indexing mode (rotating to fixed angles) or continuous rotation mode and may be manually, pneumatically, hydraulically, or motor-driven, with CNC rotary tables typically using motorized control for automated, highly accurate movement.

Key Features

  • Precision rotation of the workpiece for accurate machining.

  • Provides additional axes (4th or 5th) to CNC machines.

  • Used for milling complex shapes, drilling evenly spaced holes, engraving, and multi-axis machining.

  • Offers modes for indexing (fixed angular steps) or continuous rotation.

  • Enhances machining efficiency by reducing the need for multiple setups.

How it Works

  • Precision Rotation: The table rotates a workpiece around a single, fixed axis.
  • Computer Control: A CNC controller directs the precise movements of the table using programmed instructions.
  • Worm Gear Mechanism: Most CNC rotary tables use a worm gear and worm wheel mechanism, driven by a servo motor, to provide smooth and accurate motion.

Common Types of CNC Rotary Tables

Overall, the CNC rotary table is a vital accessory for precision machining, enabling highly accurate, automated, and versatile manufacturing processes in industries like aerospace, automotive, and medical device production.

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