Requirements

req_001: The part shall be a single linkage body with three collinear through holes whose center-to-center spacings are 60 mm and 80 mm, and whose diameters are 12 mm.
req_002: The linkage shall have an overall thickness of 10 mm.
req_003: Each hole shall be surrounded by a 32 mm outer circular profile, and the outer contour between neighboring regions shall be smoothly blended.
- Assumption: Smooth blending between the three outer lobes is validated visually because the declared evaluation-only capability gap prevents a fully deterministic geometric substitute.