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Sign inRobot sourcing for machine tending
Specify what happens before and after a part is loaded. Include opening the machine, unloading, cleaning, orientation checks and placing the finished part. The machine interface and recovery sequence can be as important as the robot movement.
Application-specific questions
- Which machine, door and workholding signals are available?
- How are raw and finished parts presented and distinguished?
- Does the process require washing, blowing off or gauging?
- What happens after a dropped part, machine alarm or stopped cycle?
Prepare the supplier comparison
Provide machine interface information, part drawings and the complete timing sequence. Ask the integrator to identify responsibilities for machine access, tooling and interlocks.
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
Write the complete machine handoff and recovery sequence
A machine-tending cycle includes more than moving a part into a machine. The proposal must explain how the door, workholding, cleaning, part identification and alarms interact with the robot. Establish who can supply the machine-interface information and which changes are included before comparing automation bids.
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 |
|---|---|---|
| Machine handshake | A signal list and sequence for permission to access, clamp state, cycle start and completed machining. | A spare I/O connection proves the interface is supported. |
| Part state | A method for separating raw and finished parts and confirming the required orientation. | The robot can infer part state from tray location alone. |
| Ancillary operations | Cleaning, gauging, regripping and part-disposal steps included in the timing. | A load/unload demonstration covers all production operations. |
| Stopped-cycle recovery | Responsibility and documented response to alarms, missed parts and interrupted handoffs. | Resetting the robot also resets the machine safely. |
Assign responsibility at every interface
Ask the integrator and machine supplier to agree the handoff rather than leaving each quotation to assume the other party will provide it. Mark hardware changes, software work, fixtures and approval responsibilities explicitly. An unresolved machine-interface dependency is a project risk even if the robot path is already simulated.
Time the full sequence using the production part and the required cleaning or gauging operations. State whether robot loading overlaps machine processing and what happens when that overlap is interrupted. A bid should describe the boundary of any throughput claim.
Worked sourcing brief
Illustrative procurement exercise. Assumptions below are invented for explanation; this is not a customer case, trial result or quotation.
Assume the proposed cycle unloads a finished part, blows off a fixture and inserts a raw part. A short robot transfer shown without cleaning and clamp confirmation does not represent that sequence. Request an interface review and a demonstration including the agreed signals. The exercise organises responsibilities; it does not prescribe a safety circuit or machine modification.
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.
- Save the approved signal and sequence revision with named machine and integration responsibilities.
- Demonstrate representative raw and finished part handling, including the agreed cleaning and inspection steps.
- Request documented alarm and interruption recovery and the appropriate installation assessment.
Common buyer questions
Can any CNC machine be connected to a robot?
The page establishes no universal compatibility. Ask the machine supplier about the exact interface, permissions and required modifications.
Is robot cycle time the same as machine-tending output?
No. Assess machine processing, access, handling and any overlapping operations within a defined full cycle.