Mechanical EOAT design

Adjustable VacuumRobot EOAT

An eight cup vacuum tool with adjustable aluminium profile arms and a central wrist interface, engineered to handle several compatible workpiece formats with one configurable pickup architecture.

Adjustable Vacuum Robot EOAT
Sector
Robotic material handling
Service
Mechanical EOAT design
Focus
Adjustable pickup footprint
ObjectiveHandle related formats with one configurable tool
MethodAdjustable profile arms with eight distributed suction points
Key issueMove contact points without compromising balance
OutcomeRequired 4 to 6 s pick to place duty achieved
01 Engineering brief

Adjust the footprint, retain the architecture

The EOAT was developed for robotic material handling where one tool had to accommodate more than one workpiece format without requiring a new gripper frame for each size.

Four radial profile arms and four carrier plates support eight vacuum contact points around the central wrist interface. Adjustment changes the pickup footprint while the primary load path and overall tool architecture remain consistent.

Underside plan of the vacuum tool showing eight suction cups on four carriers
Plan view used to review cup spacing, symmetry and the adjustable pickup footprint.
Lower isometric view of the EOAT showing suction cups and carrier plates
Cup side view showing distributed contact points and the adjustable support structure.
02 Contact architecture

Spread suction across usable surfaces

Distributed suction suits workpieces where suitable sealing areas are spread across the top surface. Local compliance at the cup assemblies absorbs small height differences, softens first contact and helps multiple cups establish a reliable seal.

Adjustment
T slot profile arms provide an adjustable X and Y support arrangement for the cup carriers.
Load path
The circular central hub transfers loads between the robot wrist and the adjustable profile structure.
Vacuum services
Local routing keeps the vacuum distribution close to the cup positions and accessible for maintenance.
03 Handling sequence

Confirm vacuum before the lift

The operating sequence separates contact and vacuum confirmation from robot motion. This ensures the workpiece is retained before the tool begins the transfer path.

  1. 01

    Approach

    Bring the adjusted pickup footprint over the selected workpiece.

  2. 02

    Contact

    Seat the cups on the available sealing areas.

  3. 03

    Confirm

    Confirm the required vacuum condition before lifting.

  4. 04

    Lift and transfer

    Move the retained workpiece through the planned robot path.

  5. 05

    Release

    Complete a controlled release at the destination.

  6. 06

    Return

    Clear the placement area and return for the next cycle.

04 Achieved performance

The project achieved the required robotic handling duty

The completed tool achieved the specified pick to place duty in the successful application. Cycle time was governed by robot travel, payload and the time needed to confirm vacuum before lifting.

Pick to place4 to 6 s

Required project cycle achieved.

Equivalent rate≈10 to 15 picks/min

Corresponding handling rate for the successful application.

Contact points8 cups

Distributed across four adjustable carrier plates.

Suitable applications
Cartons, cases, trays, boards and other broad workpieces with a suitable vacuum contact surface.
Application checks
Final vacuum sensing, payload verification, robot path and safe release remain part of the complete robot application.
Interface context
The robot system sits within the wider ISO 10218 framework, with the mechanical wrist interface aligned to ISO 9409-1 conventions where applicable.
05 Key finding

Format flexibility worked because only the contact geometry had to move

The central robot interface and primary load path stayed fixed while the profile arms repositioned the suction points. That separated workpiece adjustment from the core EOAT architecture.

06 Engineering outcome

One configurable EOAT for related product formats

The completed EOAT combined an adjustable support structure, distributed suction contact and a compact central robot interface. It successfully handled the intended product family while achieving the required cycle duty for the project application.

Performance
The successful application achieved the required 4 to 6 s pick to place duty.
Format flexibility
The cup footprint could be repositioned within the adjustable support structure.
Mechanical balance
Pickup points remained distributed around the central wrist interface.
Project result
One EOAT architecture supported the compatible formats defined for the application.

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