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Application 7 of 8

Inspection Stop, look, move on

With a camera at the wrist, the robot stops at each check point in turn. Same angle, same distance, every time, so the judgment stays consistent.

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Title
Inspection · Process path plate
Drawing no.
HG-DWG-207
Scale
NTS
Unit
mm
Inspection process path plate: the tool path traced many times over (stop, look, move on). The open circle marks the start, the filled dot the end.

Process sequence

One path, four steps.

Scroll down and each step lights up in copper on the plate.

Title
Inspection · Sequence, plan view
Drawing no.
HG-DWG-217
Scale
NTS
Unit
mm
Inspection sequence, plan view: the same cell seen from above. The numbers match the steps.

  1. 1. Arrive

    The part arrives and stops at the inspection station.

  2. 2. Capture

    The robot stops at each set pose and takes an image.

  3. 3. Judge

    Each image is compared against the criteria for pass or fail.

  4. 4. Record and sort

    Results are stored with the serial number, and rejects are set aside.

Design points

Designing the cell: three things first.

  1. 1. Bring the light along

    Mount the light next to the camera, and changes in ceiling lights or daylight no longer shift the image.

  2. 2. Stop, then shoot

    Shooting on the move is faster but blurrier. Stop for precision checks, and shoot on the fly only for presence checks.

  3. 3. Reference samples

    Agree on good and bad reference samples together, then tune the judgment against them during commissioning.

Recommended robots

Our first pick for this job.

Products

Manual visual inspection drifts with fatigue and lighting. A robot brings the camera to the programmed pose every time, so images stay consistent and pass/fail criteria can be set in numbers.

For small parts, an HG-C5-09 cobot or an HG-S6-50 SCARA carries the camera. In a fastening cell, the robot that drove the bolts checks them too.

The HGC-7 sends the results to the line PLC, and rejects never reach the next process.

  • Collaborative robots

    HG-C5-09

    Our smallest cobot: 5 kg and 900 mm, sized for benchtop assembly, inspection, and dispensing

    Payload
    5kg
    11 lb
    Reach
    900mm
    35.4 in
    Repeatability
    ±0.03mm

  • Collaborative robots

    HG-C10-13

    Our flagship cobot: 10 kg and 1,300 mm, from machine tending to welding

    Payload
    10kg
    22 lb
    Reach
    1,300mm
    51.2 in
    Repeatability
    ±0.03mm

  • SCARA

    HG-S6-50

    A 500 mm SCARA with a 0.32 s standard cycle for fast small-part work on boards

    Payload (rated)
    3kg
    6.6 lb · max 6 kg
    Arm length
    500mm
    19.7 in
    XY repeatability
    ±0.01mm

Other models that fit

Cases

Already running this process.

All cases for this process

Industries that use this process most

Send drawings. We draw the path.

Share part drawings or a video of the current process. An application engineer will work through the cell layout and cycle time with you.

Quote for HG-C5-09Cases for this process
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