Case Studies / Arc Welding / Motorcycle Frames


Motoman Robots Arc WeldingMotoman's solution resulted in consistent welds, uniformity from frame to frame, increased production capacity, and less reliance on skilled welders for high volume production.

Project Challenges

  • Increase manufacturing capacity to 50-60 frames per day.
  • Reduce dependency on a small number of skilled manual welders.
  • Make 56 cosmetically perfect welds per frame on 3.175 mm (.125") mild steel.
  • Achieve cycle time of 15-20 minutes per weld cycle.

Motoman Robotics Solution

  • Motoman Robotics provided two identical ArcWorld 6016HD solutions. Each system includes:
  • Motoman SK16 robot with MRC controller
  • MRM-500 heavy-duty headstock/tailstock (HS/TS) positioner with 3 m (118") between HS/TS and weight capacity of 113.4 kg (250 lbs) per side (226.8 kg / 500 lbs total)
  • Kobelco LS350 power source with welding interface
  • Tregaskiss Torch 400-amp, air-cooled with shock sensor
  • Standard start-up kit with .035" wire
  • Motoman 200-V High-Speed Touch Sensing
  • Operator station
  • Motoman XTC Torch cleaner with anti-splatter on 1,829 mm (72") stand
  • Motoman wire cutter
  • Programming platform 3.24 m L x .62 m W x .61 m H (127.6" x 24.4" x 24") with two sets of steps
  • Common base for MRC and welding power source
  • Motoman Toolsight® (torch alignment program)
  • Integrated work cell protection, including safety fence, mats, and one dual-interlocked gate

Fixtures/Tooling Details

The customer provided simple mechanical fixtures that were integrated into the robot system at Motoman. Frames are tack-welded together prior to being manually loaded onto the positioner fixtures by an operator. Safety features inherent to the ArcWorld 6016-HD system allows the operator to unload/load one side of the positioner while the SK16 robot is welding on the other. Touch-sensing is used to compensate for minor variances in part fit-up. Customer is making ongoing upstream enhancements to improve fit-up and reduce the amount of touch-sensing required.

Ref: ACS-028

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