Rotary transfer machines – find manufacturers and suppliers

Rotary transfer machines are highly productive machine tools that are used for the mass production of workpieces.

They are characterized by a rotating rotary table on which several machining stations work in parallel.

Below you will find the operating principle, the main components, the mode of operation and the types of rotary transfer machines as well as a brief overview of their areas of application and their advantages:

How rotary transfer machines work:

Rotary transfer machines work according to the principle of parallel processing. Modern CNC-controlled rotary transfer machines offer high flexibility and precision.

Main components of a rotary transfer machine:

1. Rotary table: Rotates the workpiece from one processing station to the next.
2. Machining stations: Several tools work in parallel e.g. drilling, milling, turning, thread cutting.
3. Clamping devices: Hold the workpiece precisely in position during machining.
4. Control system (CNC or PLC): Controls the entire machining process.
5. Automatic workpiece feed: Increases efficiency by continuously feeding components.
6. Modern CNC-controlled rotary transfer machines offer high flexibility and precision.

How a rotary transfer machine works:

1. The workpiece is clamped → Automatic or manual loading.
2. The machining process starts → Simultaneous machining of the workpiece at several stations.
3. Rotary table continues to rotate → The workpiece moves to the next processing step.
4. Finished workpiece is removed → Continuous production flow.

Types of rotary transfer machines:

1. Mechanical rotary transfer machines:
   Simple design, high speed.
   Ideal for mass production of small, identical parts.
   Less flexibility, as retooling for new workpieces is time-consuming.
2. CNC-controlled rotary transfer machines:
   Can be flexibly programmed for different workpiece types.
   Higher precision and complex machining possible.
   More expensive, but suitable for varied production.
3. Special rotary transfer machines:
   Specially adapted machines for specific applications.
   Combine different processing techniques, e.g. laser processing or grinding.

Typical areas of application for rotary transfer machines:

1. Automotive industry:
Production of gears, valves, crankshafts and axle parts.

2. Medical technology:
Production of implants, surgical instruments and precision parts.

3. Electronics and electrical engineering:
Production of connectors, contacts and housings:

4. Mechanical engineering:
Production of small precision components for machine tools.

Advantages of rotary transfer machines:

Anyone producing large series can significantly reduce costs per workpiece with rotary transfer machines.

• High productivity due to simultaneous processing of workpieces.
• Short cycle times make them ideal for series production.
• High precision thanks to fixed workpiece positioning.
• Cost-efficient for high production volumes

Rotary transfer machines are essential production machines for the fast and precise mass production of components. They offer high productivity, precision and automation options, but are only economically viable for large quantities. With modern CNC controls and Industry 4.0 technologies, they are becoming increasingly flexible and efficient.

Below you will find an overview of the most important criteria to look out for when purchasing rotary transfer machines:

Rotary transfer machines are a major investment that requires careful analysis. The right choice has a significant impact on productivity, quality and costs.

• Before buying a rotary transfer machine, the following questions should be clarified:
• Which components are to be manufactured? Material, geometry, tolerances.
• Which machining processes are required? Drilling, milling, turning, grinding.
• What quantities are planned? Per day, month, year.
• What precision is required? Micrometer accuracy or standard tolerances?
• How flexible does the machine need to be? Suitability for different workpieces.
• Are there automation requirements? Robot integration, automatic workpiece feed.
• Selecting the right rotary transfer machine. There are different types, depending on the production requirements. Mechanical or CNC-controlled rotary transfer machines:
• Mechanical rotary transfer machines:
• Ideal for large series of identical components.
• Very fast cycle times of 1-10 seconds.
• Less flexibility, changeover can be time-consuming.
• CNC-controlled rotary transfer machines:
• Programmable for different workpieces.
• Greater flexibility for product changes.
• Number of processing stations. Depending on the workpiece and complexity, the machine must have enough stations:
• 4 to 8 stations: For simple machining operations.
• 10 to 12 stations: For more complex workpieces.
• Important parameters for the selection are the processing speed and cycle time as well as the precision and repeat accuracy.
• Short cycle times < 5 seconds for mass production.
• Tolerances of ±0.01 mm or better for precision production.
• High-quality clamping systems for maximum repeat accuracy.
• CNC control with adaptive process control.
• Linear measuring systems and temperature compensation further increase accuracy.
• Modern rotary transfer machines should be able to be seamlessly integrated into existing production lines.
• Automatic workpiece feeding such as robot-controlled loading for high autonomy makes sense.
• Vibratory conveyors or bulk material feed for small precision parts.
• Predictive maintenance to avoid downtimes.
• Connection to ERP/MES systems for efficient production management.
• Remote monitoring functions can reduce service calls.
• Machines with user-friendly controls reduce the amount of training required.
• A maintenance contract with the manufacturer can reduce operating costs.
• In addition to the purchase price, operating costs also play a major role.
• Sustainable machines can receive subsidies and reduce operating costs.
• Machine demonstrations or test productions at the manufacturer are recommended.

Purchasing a rotary transfer machine requires a detailed analysis of all technical, economic and safety-related aspects. The choice between mechanical or CNC-controlled models, automation options and sustainability criteria are decisive for a profitable long-term investment.

Rotary transfer machines can be purchased from various suppliers. Comprehensive information about manufacturers and suppliers of Rotary transfer machines from all over the world can be found on Exportpages.