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Difficulty: EasyIrregular Edge Matching

During industrial fabrication, specific metal plates must be welded together to form solid, continuous surfaces without gaps. Match each left-side metal plate, characterized by its specialized right-side welding seam, with the appropriate right-side plate that possesses the exact complementary left-side seam.

  • Protruding dovetail jointInward dovetail socket
  • Inward semi-cylindrical channelProtruding semi-cylindrical rod
  • Protruding jagged sawtooth profileInward jagged sawtooth recess
  • Inward square-cut keywayProtruding square-cut key

Answer

The protruding dovetail joint matches the inward dovetail socket; the inward semi-cylindrical channel matches the protruding semi-cylindrical rod; the protruding sawtooth profile matches the inward sawtooth recess; and the inward square-cut keyway matches the protruding square-cut key.
A flawless weld between two plates requires that every extending structural feature (positive space) on one plate is exactly accommodated by a corresponding cut-out (negative space) of the identical geometry on the adjoining plate, allowing them to slide together without rotation.

Step-by-Step Solution

1
Examine the right-edge welding seam of each left-side plate to determine if it is a protrusion (positive space) or a recess (negative space).
Identified two protrusions (dovetail, sawtooth) and two recesses (channel, keyway).
Understanding the physical geometry is the first step to finding a complementary fit.
2
Search the right-side plates for the exact inverse geometric shape for each specific profile.
Paired the dovetail protrusion with the dovetail socket, and the sawtooth protrusion with the sawtooth recess.
A protrusion requires an identical recess to form a flush surface.
3
Match the remaining recessed left-side plates with their corresponding protruding right-side plates.
Paired the semi-cylindrical channel with the rod, and the square-cut keyway with the key.
A recess must be filled by an identical protrusion to eliminate gaps.

Key Concept

Identifying complementary positive and negative spatial geometries (protrusions and recesses) to seamlessly interlock irregular edges.
Estimated Time:45s
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Topics

Irregular Edge Matching

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