Guide to Rotary Index Table:What Is a Rotary Indexing Table?

• What Is a Rotary Index Table
• How Rotary Indexing Table Work
• Types of Rotary Index Table
• Features of Rotary Index Table
• Advantages of Using Rotary Indexing Table
• Applications in Manufacturing of Rotary Indexing Table
• Drive Mechanisms of Rotary Indexing Table
• Rotary Indexer Table Installation Types
• How Do You Choose a Rotary Index Table
• Rotary Indexer Table Machine Components and Options
• what is the difference between rotary table and index table
• Use a Rotary Index Table
• Rotary Indexer Table Maintenance
• Cost Considerations of Rotary Indexer Table

What Is a Rotary Index Table

Rotary index table, also known as a indexing table, is a precision mechanical device that facilitates the rotational positioning of workpieces in machine tools and automated systems.These rotations enable precise positioning of the workpiece during successive tasks.They have a wide range of applications, including machining, positioning, inspection, and automation.

How Rotary Indexing Table Work

The working principle of a rotary indexing table is as follows:

1. Workpiece Loading: The operator places the workpieces on the workstation of the rotary table and ensures they are securely fastened in place.
2. Indexing: The table rotates to the correct position and aligns with other machines. This can be achieved manually, pneumatically, or using a motor.
3. Processing: At each workstation, the machine performs its assigned tasks, which may include inserting parts, assembling components, fastening, quality inspection, drilling, milling, or welding.
4. Repetitive Indexing: After completing the task at one station, the table rotates to the next position. This cycle continues until all stations have been used.
5. Unloading: Once all operations are complete, the operator removes the finished workpieces from the table.

Types of Rotary Index Table

Key types include:

1. Manual Rotary Tables: Handwheel-operated, ideal for simple tasks and low-volume production.
2. CNC Rotary Tables: Computer-controlled for high-precision, complex machining.
3. Motorized Rotary Tables: Powered by motors, used in automated production lines.
4. Cam-Driven Rotary Tables: High-speed, accurate positioning for assembly lines.
5. Hydraulic Rotary Tables: Hydraulic-powered for heavy-load operations.
6. Pneumatic Rotary Tables: Air-driven for lightweight and quick indexing tasks.
7. Gear-Driven Rotary Tables: Gear-powered, precise and durable for heavy-duty machining.
8. Direct-Drive Rotary Tables: Motor-driven without gears, offering high speed and precision.
9. Tilting Rotary Tables: Provides rotation and tilt for multi-axis machining.
10. Heavy-Duty Rotary Tables: Designed for large parts and industrial-scale operations.
    Each type caters to specific needs, balancing precision, load capacity, and automation requirements.

Features of Rotary Index Table

The main features of a rotary index table include having multiple workstations around it. It moves step-by-step to precisely align the workpiece at each station for efficient processing, facilitating various tasks such as drilling, milling, and assembly.
These tables are capable of indexing, meaning they move the workpiece in small, precise increments to expose different parts, areas, sides, and angles for cutting, shaping, or insertion processes.
These index tables are easily customizable to accommodate different production needs. You can conveniently adjust their size, number of stations, and configuration to meet specific manufacturing requirements.

Advantages of Using Rotary Indexing Table

Indexing tables are one of the most efficient ways to move and position workpieces in precision machining. The rotary indexing table can be used for small, medium or large workpieces.
The rotary indexing table delivers high precision, speed, and versatility. With programmable controls and consistent performance, it accelerates operations, enhances the efficiency of automation processes, and reduces costs.

Applications in Manufacturing of Rotary Indexing Table

Key applications include:

1. Automated Assembly Lines: Sequential movement for assembly, inspection, and packaging.
2. Machining and Tooling: Facilitating multiple operations on a single workpiece without re-clamping.
3. Welding: Ensuring accurate positioning for consistent weld quality.
4. Inspection and Testing: Precise positioning for quality control and testing.
5. Printing and Marking: High-speed printing, engraving, or labeling.
6. Robotics and Automation: Integration with robotic arms for synchronized operations.
7. Pharmaceuticals and Medical Devices: Handling delicate components for assembly and packaging.
8. Food and Beverage: Streamlining packaging and filling processes.
9. Aerospace and Defense: Precision assembly and inspection of critical components.
10. Renewable Energy: Manufacturing and inspection of energy-related equipment.

These applications highlight the efficiency and precision rotary indexing tables bring to various industries.

Drive Mechanisms of Rotary Indexing Table

The driving mechanism of a rotary indexing table typically includes the following key components:

1. Motor: Stepper motors, servo motors, or DC motors provide the rotational power.
2. Gearbox: Reduces motor speed and increases output torque.
3. Indexing Mechanism: Achieves precise indexing through components like indexing plates and pins.
4. Transmission System: Uses gears, belts, or couplings to transmit power from the motor to the indexing plate.
5. Control System: CNC or PLC control systems precisely regulate the rotation angle and speed.
6. Feedback System: Uses encoders or sensors to monitor position, ensuring accuracy.

These components work together to achieve precise and stable rotational indexing.

Rotary Indexer Table Installation Types

Vertical Mounting: The Vertical Rotary Table is mounted vertically on the machine table, with the rotation axis perpendicular to the workpiece. Suitable for vertical operations like milling or drilling.

Horizontal Mounting: The indexer table is installed horizontally, with the rotation axis parallel to the worktable. Ideal for larger or heavier parts.

Angled or Tilting Mounting: The indexer table can be tilted at specific angles for angled milling or drilling, often used in multi-axis machines.

Direct Drive Mounting: The indexer table is driven directly by a motor (e.g., servo or stepper). It provides high precision and fast response, often used in automated or high-precision applications.

Integrated Mounting: The indexer table is integrated with the machine’s worktable or other components, saving space and allowing for multi-axis operations.

Adjustable Mounting: The indexer table can be adjusted for angle, position, or height, making it versatile for different machining tasks.

How Do You Choose a Rotary Index Table

When selecting a rotary index table, several key factors should be considered:

1. Type of Operation: A manual rotary table is suitable for simple indexing operations, while complex automation or CNC operations require a CNC rotary table.
2. Load Capacity: Ensure the rotary table can support the weight of the workpiece.
3. Accuracy and Resolution: Choose a rotary table that meets the required accuracy, with common resolutions such as 1° or higher.
4. Table Size: Select a rotary table with a diameter that suits the size of the workpiece.
5. Drive Type: Manual drives are suitable for simple operations, while electric or pneumatic drives are ideal for CNC machines or tasks requiring high precision.
6. Precision and Repeatability: Ensure the rotary table’s repeatability meets the process requirements.
7. Mounting Type: Confirm compatibility with the machine tool for proper installation.
8. Speed: Choose a rotary table with the appropriate speed according to the process requirements.
9. Budget: Manual rotary tables are more affordable, while electric, pneumatic, and CNC rotary tables tend to be more expensive.

Rotary Indexer Table Machine Components and Options

The rotary indexer table main components and options are as follows:

Key Components:

1. Table/Platter: The rotating platform that holds the workpiece, usually made from steel or aluminum.
2. Indexing Mechanism: Controls the rotation of the table, commonly using cam-driven systems, servo motors, or pneumatic/hydraulic systems.
3. Indexing Locking Mechanism: Ensures the table locks in place at preset positions to prevent slippage.
4. Drive Motor: Powers the rotation, often a stepper motor or servo motor.
5. Rotary Encoder (Optional): Provides feedback on position for precise movement.
6. Bearing System: Supports the rotating table and reduces friction.
7. Control System: Coordinates the indexer with other machines like CNC machines.

Options:

1. Manual vs. Automatic Indexing:

   • Manual: Operator manually sets positions.
   • Automatic: Automatically moves the table for high-precision, high-efficiency production.

2. Rotational Angles:

   • Fixed Angles: The table rotates in fixed increments (e.g., 90° or 180°).
   • Continuous Rotation: Allows rotation to any angle.

3. Precision:

   • High Precision: For applications requiring exact positioning.
   • Standard Precision: For general machining needs.

4. Load Capacity: Depending on the workpiece weight and force requirements, indexers come in various load capacities.

5. Size and Configuration:

   • Small Single-Axis: Ideal for small parts.
   • Large Multi-Axis: Used for heavy-duty machining and large workpieces.

6. Additional Features:

   • Servo Control: Offers higher accuracy and flexibility.
   • Through-Hole Design: Allows tools to pass through for additional operations (e.g., drilling).
   • Position Feedback Systems: Ensures precise positioning using encoders.

what is the difference between rotary table and index table

rotary table allows continuous or incremental rotation for versatile operations like milling, grinding, and drilling, often used for circular or arc machining. In contrast, an index table rotates in precise, fixed increments, ideal for dividing circles into equal parts for operations like gear cutting or hole-pattern drilling. While the rotary table offers flexibility in movement, the index table excels in accuracy for repetitive, evenly spaced features.

Use a Rotary Index Table

The process is simplified as follows:

1. Setup: The part is clamped onto the rotary index table, with drilling and tapping tools positioned above.
2. Start: The operator or control system initiates the process.
3. Drilling and Tapping: The drill creates the hole, followed by the tapping tool to create threads.
4. Indexing: The index table rotates the part to the next position, ensuring precise alignment.
5. Repetition: The process repeats for each hole without manual repositioning, saving time and reducing errors.
6. Completion: After all holes are drilled and tapped, the part is inspected to ensure accuracy.

Rotary Indexer Table Maintenance

Lubrication: The rotary indexer table uses gears and bearings for precision, which must be properly lubricated to prevent wear and ensure smooth operation. Poor lubrication can lead to overheating or failure, so regular lubrication is recommended to avoid downtime.

Alignment Check: Over time, components may shift or wear, causing misalignment that affects performance. Technicians can ensure the indexing accuracy remains within acceptable tolerances, which is crucial for maintaining precision during operation.

Motor Inspection: Motor checks are vital for the rotary indexer. Wear on the motor can lead to failure or larger issues. Professionals can detect early signs of failure and assess the motor’s condition to prevent breakdowns, evaluating the motor, cam, and other components to address problems before they cause downtime.

Rotary Indexing Table Price

Basic Manual Rotary Tables: Starting at around $500 - $2,000.

Standard CNC Rotary Indexers: Between $5,000 - $15,000 depending on precision and features.

High-End Fully Automated Rotary Indexers: Can range from $20,000 to over $50,000 or more for large, precision systems with advanced controls.

If you are looking for the best CNC Rotary Table accessories for your manufacturing business, please contact YUNWU® or email us at shine@yunwuchuck.cc.