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Application 1 of 8

Welding A tight zigzag

The torch weaves along the joint as it travels. The tighter the repeatability, the more even the bead and the less rework.

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Title
Welding · Process path plate
Drawing no.
HG-DWG-201
Scale
NTS
Unit
mm
Welding process path plate: the tool path traced many times over (a tight zigzag). The open circle marks the start, the filled dot the end.

Process sequence

One path, five steps.

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

Title
Welding · Sequence, plan view
Drawing no.
HG-DWG-211
Scale
NTS
Unit
mm
Welding sequence, plan view: the same cell seen from above. The numbers match the steps.

  1. 1. Load

    An operator loads parts into the fixture and closes the clamps.

  2. 2. Index

    The rotary table turns 180° and presents the parts to the robots.

  3. 3. Find the seam

    The torch tip touches off the part to find where the seam actually is.

  4. 4. Weld

    The robot weaves along the seam at the set angle and speed.

  5. 5. Clean the torch

    It clears spatter from the nozzle and trims the wire before the next part.

Design points

Designing the cell: three things first.

  1. 1. Accuracy starts at the fixture

    A robot that repeats to ±0.02 mm cannot help if the part shifts in the fixture. We place the clamps with the weld heat in mind.

  2. 2. Absorb part variation

    Stamped parts vary from piece to piece. Touch sensing finds the seam and shifts the program to match.

  3. 3. Keep fumes and sparks in the cell

    We enclose the cell with fencing and welding screens and add fume extraction. A light curtain guards the loading side.

Recommended robots

Our first pick for this job.

Products

Arc welding suits parts with many joints: seat frames, brackets, and structures. The robot drags the torch at the same angle and speed every time, which takes out most of the bead-width variation of manual welding.

A typical cell pairs a rotary fixture table with two robots. While the robots weld on one side, an operator loads parts on the other. For spot welding on body parts, a gun goes on the HG-R210-27.

The HG-C10-13 cobot fits high-mix, low-volume welding. You teach weld points by guiding the arm by hand, so changeovers are quick.

  • Industrial 6-axis

    HG-R12-14

    A 12 kg, 1,400 mm mid-size arm for arc welding and small-part handling

    Payload
    12kg
    26 lb
    Reach
    1,400mm
    55.1 in
    Repeatability
    ±0.02mm

  • Industrial 6-axis

    HG-R25-18

    A 25 kg, 1,800 mm arm for heavier torches, grippers, and wider work areas

    Payload
    25kg
    55 lb
    Reach
    1,800mm
    70.9 in
    Repeatability
    ±0.02mm

  • 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

Other models that fit

Cases

Already running this process.

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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-R12-14Cases for this process
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