[family] minifix_cam_housing: Häfele Minifix 15 connector housing

[qiwei-lai-2007]

Family

• Family: minifix_cam_housing — cat:furniture-hardware
• Closes [family] minifix_cam_housing #25

Reference (issue #25 — Häfele Minifix 15)

Datasheet drawing	Part photo

Generated — benchmark views (what the model sees)

Generated — easy / medium / hard samples

Extremes — smallest and largest sampled instances

How it's parameterized

• One variant selects one of seven exact Häfele catalogue rows, coupling minimum panel thickness, Ø15 bore, optional Ø16.5 × 1 mm rim, bolt-axis height A, and drilling depth X.
• The Ø7/Ø8 edge-bolt choice adjusts the open capture clearance.
• Manufacturer CAD for item 262.25.035 anchors the 19 mm baseline: measured casting envelope, eccentric intersecting-circle cam, open capture slot, C-shaped terminal plate, direction arrows, and the combined PZ2 / flat / SW4 socket.
• A moves the bolt window, X extends the axial cage, and the web rule is 0.22 × (X − A). Cross-SKU internal deformation is honestly labelled proportion because only one OEM SKU was available as CAD.

Verification

Check	Result
Build/spec interface	8 build parameters; 10 complete PARAM_SPEC entries
Sampling	easy, medium, hard: 4/4 seeds each
Catalogue coverage	all 7 catalogue rows; both Ø7 and Ø8 bolt holes reachable
Geometry novelty	8/12 unique sampled shapes
Solid integrity	every sampled instance is one non-degenerate solid
Local validation	full bench2 validate: PASS
Code quality	ruff check, ruff format --check, and git diff --check: PASS
Visual review	all three regenerated preview images inspected locally

Accuracy scope

The code reconstructs readable, valid CadQuery topology; it does not import the manufacturer's STEP into build(). Small casting draft, local blends, ejector marks, and some transitions are simplified. Only item 262.25.035 directly calibrates the 19 mm row; the other catalogue lengths are parametric extrapolations and are not production CAD. Detailed measurements and limitations are recorded in designs/minifix_cam_housing/NOTES.md.

Checklist

• Full bench2 validate passes locally
• preview.png, preview_views.png, and preview_extremes.png regenerated and committed
• One family only: designs/minifix_cam_housing/
• PR body contains Closes [family] minifix_cam_housing #25
• DCO-signed commits
• Every range and constraint cites the Häfele catalogue, OEM CAD, or the honest label proportion
• Two reviewers requested; merge waits for human approval

Sources used

• Häfele UK catalogues 14CFC294.pdf and 14CFC295.pdf, pp. 294–295.
• Häfele US product P-00861332, downloadable STEP AP214 for item 262.25.035 (retrieved 2026-07-23).

[github-actions]

bench2 validate

minifix_cam_housing

  ✓ family.json: keys + base_plane valid
  ✓ pieces: build(7 params) + PARAM_SPEC + check present
  ✓ PARAM_SPEC: 9 params, all entries complete
  ✓ easy: 4/4 seeds sample+check+build+execute clean
  ✓ medium: 4/4 seeds sample+check+build+execute clean
  ✓ hard: 4/4 seeds sample+check+build+execute clean
  ✓ coverage: variant reaches all 7 declared values (standard table fully covered)
  ✓ coverage: body_diameter reaches all 1 declared values (standard table fully covered)
  ✓ coverage: min_wood_thickness reaches all 7 declared values (standard table fully covered)
  ✓ coverage: has_rim reaches all 2 declared values (standard table fully covered)
  ✓ coverage: bolt_axis_height reaches all 7 declared values (standard table fully covered)
  ✓ coverage: housing_height reaches all 7 declared values (standard table fully covered)
  ✓ coverage: bolt_hole_diameter reaches all 2 declared values (standard table fully covered)
  ✓ difficulty separation: difficulties produce distinct programs
  ✓ geometry novelty: 7/12 unique shapes (42% duplicate)
  ✓ solids: every instance non-degenerate, 1 solid(s) each
PASS — designs/minifix_cam_housing

Previews: the previews artifact on this run.

[JiusongZhou7]

looks good

[JiusongZhou7]

模型似乎太复杂了，预览看上去和参考的不太一样

[BenchCAD]

Maintainer note: I edited only the image urls in your description — they were pinned to your branch name, which gets deleted when this PR merges (taking every preview with it), so they now point at the same files pinned to 9648895; no code changed and the images show exactly what they did before. / 【维护者说明】只改了描述里的图片链接:原先钉在分支名上,本 PR 合并后该分支会被删除、预览图会随之永久失效,现已改钉到 9648895,指向的仍是同样的文件;代码没有任何改动,图片内容也完全一致。