Universal Robot: Machine Tending with Doosan Dual-Spindle CNC Lathe

June 27, 2024 by
Universal Robot: Machine Tending with Doosan Dual-Spindle CNC Lathe
Kurtin Robotics, Karan Khatter



In one of our latest projects, we used a  Universal Robot 10e Collaborative Robot to optimize the machine tending process for a Doosan CNC Lathe. This advanced solution aimed to streamline part handling, increase efficiency, and ensure throughput of this product. Here’s an in-depth look at the system, the hardware used, and the automation process.

System Overview

Our automation solution features the UR10e, equipped with a dual pneumatic gripper setup to handle part loading and unloading with enhanced efficiency. This setup integrates seamlessly with a Doosan CNC Dual-Spindle Lathe, facilitating a smooth and automated workflow.

Hardware Components

  • Universal Robot 10e Collaborative Robot: The core of our automation system, providing flexibility and precision.
  • Dual Pneumatic Gripper: Two Schunk centric grippers with custom fingers designed for specific part handling needs.
  • Pneumatic Blow Off: Ensures parts are clean of any lingering coolant post-machining.
  • Static Infeed Peg System: Designed with a vertical footprint to minimize space requirements.
  • Regrip Station: Allows the robot to regrip parts between machining operations.
  • Integrated UR Cap HMI Screen: Loaded onto the teach pendant for operator interaction and controls.
  • PLC System: Facilitates communication between the robot and CNC, ensuring real-time status updates and control.
  • KRC Autodoor System: Automates the opening and closing of the CNC door via external pneumatic components.

Automation Process

The operation of our automated cell follows a structured and efficient workflow showed simplified:

  1. Part Loading:
    • The robot iterates through the infeed, selecting the next available raw material.
    • It moves towards the CNC machine, awaiting a completed status before activating the Autodoor system to open the CNC door.
  2. Operation 1:
    • The robot enters the CNC, cleans off the part from Operation 1 (Main Spindle), and verifies the removal of coolant and chips.
    • The part from Operation 1 is unloaded, and a new raw piece is loaded into the CNC.
  3. Regripping:
    • The robot takes the unloaded part from Operation 1 to the regrip station outside the CNC.
    • The part is regripped and prepared for Operation 2.
  4. Operation 2:
    • The robot enters the CNC to remove the completed part from Operation 2 (Secondary Spindle).
    • The regripped part is loaded into Operation 2, and the CNC machine is started.
  5. Part Unloading:
    • The completed part is taken back to the infeed and placed in its original spot.
    • This process repeats until all parts in the infeed are processed.

By leveraging the dual gripper solution on the robot, our solution allows for simultaneous part-handling for both machining ops, significantly increasing throughput and reducing cycle times. The integration of a separate PLC system ensures seamless communication and coordination between the robot and CNC, enhancing overall system reliability and efficiency.

Our advanced robotic cell not only optimizes the machining process but also exemplifies the potential of collaborative robotics in modern manufacturing. 

Conclusion

Integrating the Universal Robot 10e with the Doosan CNC Lathe, along with the custom Teach Pendant HMI, has resulted in a highly reliable and robust cell. This advanced setup has more than doubled our customers production throughput and enabled operators to significantly enhance their capabilities on their shop floor.  

Interested in a similar automation solution? 

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