Random bin picking

With the automated bin picking solution, Liebherr sets new standards in the handling of unmachined parts that are fed into a modern production system. Process reliability and increased productivity are important factors for a modern production site.

Reaching the target together with our customers

The Liebherr automated bin picking solution offers an optimally adapted process to meet the requirements of our industrial customers:

  • Increased productivity / higher output thanks to faster cycle times and extended machine service life (unmanned shifts)
  • Less physical exertion for staff (lifting of heavy parts - ergonomics)
  • Avoidance of occupational accidents (risk of crushing, falling workpieces)
  • Fast retooling to new workpieces
  • Additional integration of special tasks (measurement, DMC marking, orientation, etc.)

Liebherr robot system for bin picking

Unloading work pieces out of the transport bin is a complex interaction between a vision system, software and robot. Based on the parts matrix, we harmonise all steps of the process to each other, this guarantees an optimum picking and positioning result.

Process description

  • Requirement
    Randomly arranged parts need to be removed from the bin.

    Requirement

    Randomly arranged parts need to be removed from the bin.

  • Optical data detection and assessment
    A reliable, sturdy 3D object recognition system detects the data optically and evaluates it.

    Optical data detection and assessment

    A reliable, sturdy 3D object recognition system detects the data optically and evaluates it.

  • Object identification and selection
    Specially-designed software segments, identifies and selects the information about the workpieces as well as the technical framework conditions.

    Object identification and selection

    Specially-designed software segments, identifies and selects the information about the workpieces as well as the technical framework conditions.

  • Collision-free withdrawal of parts
    The intelligent picker has additional axes and enables collision-free withdrawal of parts from the bin.

    Collision-free withdrawal of parts

    The intelligent picker has additional axes and enables collision-free withdrawal of parts from the bin.

  • Object positioning
    Finally, the tools are precisely positioned at the defined location or on a machine.

    Object positioning

    Finally, the tools are precisely positioned at the defined location or on a machine.

  • Flexible module

    The modular structure of the robot cell comprises two base modules: supply module and handling module. These can be combined with a customer-specific option and output module.

    The hook-ready supply module serves to provide workpieces for the handling module. As a basic version, it is available with two or three areas. On request, we can supplement the module with a moving vision system with operator protection. This enables loading and unloading of the bins while main operation is active. The basic modules can be joined together and enhanced flexibly.

  • Two and three place version

    Two and three place version

  • Provisioning area

    Provisioning area

  • Operator protection

    Operator protection

  • Vision system

    Vision system

  • The Liebherr robot cell is underpinned by the standardised hook-ready handling module.

    This module forms the connecting element between supply and output module. Various loading systems, including control system and user interface, can be integrated in the handling module.

    The handling and supply modules are coupled together via a mechanical and electrical connecting system. Positioning and setting-up of the individual components are made much easier for the customer because of this. Depending on the task, a flexible picker unit is available in sizes ranging from 0 to 5 kg, 5 to 20 kg and 20 to 40 kg. In combination with suitable compensation elements a high availability of the system is guaranteed. If required, the picker units can be supplemented with a 7/8 axis increasing flexibility during picking of the workpieces within the bin. The degree to which the bin is emptied is also optimised.

  • Basic module

    Basic module

  • Robot system

    Robot system

  • Surface portal system

    Surface portal system

  • Picker with compensator unit

    Picker with compensator unit

  • Picker with 7/8 axis

    Picker with 7/8 axis

  • User interface with control system

    User interface with control system

  • To optimise the unloading process from the bin, the workpieces are picked at different positions. These picking positions are not always suitable for final positioning of the workpieces. If necessary, Liebherr can offer suitable options such as intermediate storage areas, repicking stations, positioning devices or detection stations.

  • Intermediate storage

    Intermediate storage

  • Repicking station

    Repicking station

  • The workpieces withdrawn from the bins can be transferred to a wide range of different customer-specific systems. Examples of this are direct loading of a machine tool, handover to a transport system or organised storage in bins further down the line.

  • Direct loading of machine tool

    Direct loading of machine tool

  • Loading transport system

    Loading transport system

  • Loading caged pallet

    Loading caged pallet

  • Convenient control panel for easy operation

    The control panel makes it possible to enter all of the necessary information quickly in easy steps:

    • Teach-in of workpieces and definition of potential picking points
    • Configuration of bins (by entering dimensions or integrating existing data)
    • Configuration or adaptation of pickers
    • Selection of employed robots to check working area
    • Input of obstacles present in robot's working area
    • Calibration of system
    • Definition of boundary conditions for collision-free withdrawal of parts
    • Rail scheduling

    Operability

  • Control panel - definition of new workpieces

    Control panel - definition of new workpieces

  • Control panel - definition of new bins

    Control panel - definition of new bins

  • Examples and different layouts

    The Liebherr robot cell is available with different layouts.

  • Conveyor loading

    Conveyor loading

  • Machine tool loading

    Machine tool loading

  • Wired basket loading

    Wired basket loading

  • Commissioning handling

    Commissioning handling

  • Video

    Video bin picking Access video
    Video bin picking
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