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Sign inRobot sourcing for material handling
Map the transfer from pickup to placement, including any intermediate inspection or orientation step. Describe whether parts are separated, stacked or mixed. A handling shortlist must be reviewed with the actual gripping method and workspace.
Application-specific questions
- What are the part mass, dimensions and acceptable gripping surfaces?
- How variable is the incoming position or orientation?
- Which obstructions and fixtures lie on the transfer path?
- What placement tolerance and unsuccessful-pick response are required?
Prepare the supplier comparison
Provide a layout, representative samples and the sequence of positions. Ask for a gripper proposal and a demonstration under the expected presentation conditions.
Define cell acceptance
Agree what will be demonstrated, how the cycle will be measured and which interfaces are included. Record the configuration used in the trial and the conditions that would require another review. Published robot specifications alone do not validate a complete application.
For system safety context, see the OSHA industrial robot system overview. Arrange an application assessment with a competent integrator; this procurement checklist is not a safety approval.
Buyer decision notes
Follow the workpiece from presentation to accepted placement
Material handling is a sequence of presentation, acquisition, transfer and placement. Define the incoming part condition and the acceptable contact surfaces before selecting a gripper or robot. Include any inspection or reorientation step, and distinguish moving an individual workpiece from transporting a pallet across a warehouse.
Prepared by RobotLineup Editorial · Analysis updated . Platform analysis, not an independent equipment test.
Compare proposals on the same basis
Ask each bidder to answer these items against the same drawings, parts and operating sequence. An unanswered item is a comparison gap, not a passed requirement.
| Decision | Evidence to request | Avoid this assumption |
|---|---|---|
| Incoming presentation | Drawings or samples showing position, orientation, stacking and variation. | One repeatable pickup point covers a mixed presentation. |
| Gripping constraints | Permitted contact, part mass and geometry, surface condition and the proposed pickup method. | A gripper demonstration on one part covers all surfaces. |
| Transfer clearance | The full tool and part envelope through obstructions and required orientation changes. | Robot-centre reach proves carried-part clearance. |
| Placement result | Location and orientation acceptance plus the response to a missed or dropped part. | Reaching the destination means placement succeeded. |
Separate fixed-cell handling from warehouse transport
A fixed arm proposal normally needs detailed pickup and placement poses. A warehouse vehicle proposal needs load-at-height, pallet and route information. Do not force both into one generic reach or payload comparison. Use the directory categories to identify which equipment is actually being discussed.
For the proposed gripper, ask what conditions can prevent a successful pickup and how those conditions are detected. Record which part variants have been demonstrated. The cell proposal should include where unsuccessful parts go and who is responsible for replenishment and recovery.
Worked sourcing brief
Illustrative procurement exercise. Assumptions below are invented for explanation; this is not a customer case, trial result or quotation.
Assume a transfer handles both dry and oily components with the same outer dimensions. A trial on dry parts does not cover the second presentation condition. Prepare separate sample sets and request accepted pickups and placements under the agreed conditions. If the task instead moves pallets to racks, switch to a warehouse brief rather than extending the arm comparison.
What to record before acceptance
Agree the test method, responsibilities and pass conditions before ordering. The items below are records to request, not a completed validation.
- Record each demonstrated part variant and its incoming presentation and surface condition.
- Measure accepted placement against the stated position and orientation criteria.
- Document the tool configuration and the agreed handling of unsuccessful picks or interrupted transfers.
Common buyer questions
Should gripping be selected after the robot?
Develop the concepts together. The tool and carried part affect load, access and process behaviour.
Does the same mass mean the same handling task?
No. Geometry, surfaces, orientation and presentation can create different tooling and layout requirements.