Xem Studiomeasured geometry

Library › Hardware › Mechanism parts ·

Yoke 42 × 72 with a 30 mm wide opening and two 8 × 8 rods

What does the triangular eccentric drive? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: cam yoke, slotted frame, yugo, Rahmen (Kulisse)

Exact dimensions. True size, with no printing tolerance added.

length
122.0 mm
width
72.0 mm
height
8.0 mm

Notes

  • Frame whose two inner faces are exactly 30 mm apart (the triangle's width), so the cam touches both at every angle; 8 × 8 rods 40 mm long at each end carry the motion.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Yoke 42 × 72 with a 30 mm wide opening and two 8 × 8 rods size chart

dimensionvalue
opening30 × 60 mm
rods2 × 8 × 8 × 40

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Henry T. Brown (1868, public domain)Five Hundred and Seven Mechanical Movements — scan on archive.orgwebPublisher's page; dimensions are facts
507movements.comBrown's movement No. 91: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

triangular-eccentric-yoke-w30as drawn in the mechanism's own frameSTEP · STL
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=triangular-eccentric-yoke-w30

Yoke 42 × 72 with a 30 mm wide opening and two 8 × 8 rods, isometric render of a generated part
Render of triangular-eccentric-yoke-w30 from the free STEP; not to scale.

Fits with

Triangular eccentric: curved triangle turning in a yoke (motion with dwells), isometric render of a generated part
Triangular eccentric: curved triangle turning in a yoke (motion with dwells)4 sizes★ 1 file

Questions

What does the triangular eccentric drive?

Frame whose two inner faces are exactly 30 mm apart (the triangle's width), so the cam touches both at every angle; 8 × 8 rods 40 mm long at each end carry the motion.