Enclosures and housings
Mechanical Photo Frame Assembly
- Bounding box
- 82.0 × 155.0 × 200.0 mm
- Engine
- Precision B-rep
- Parameters
- 69
- Published
- October 20, 2026
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The prompt
Design a mechanical photo frame as an assembly. Units: millimetres. Coordinate system: X = depth, 0 at the inner face of the front glass and increasing toward the back. Y = vertical, 0 at the top surface of the floor, increasing upward. Z = width, 0 at the centre of the frame. Main idea: a stack of 10 rigid photo cards stands on edge between the glass and a spring-loaded follower. The frame has an open top. In use, the front card lifts straight up out of the top, slides backward over the stack and drops into a slot at the rear. A box behind the stack holds the crank, cams, spring barrel and clock. The frame at rest is about 195 wide, 120 tall and 22 deep. The rear box adds about 55 depth. Parts at rest: 1. Front glass: 170 x 106 x 2 mm, plane at X = -2 to 0, Y = 0 to 106. 2. Photo cards: 10 identical flat rigid cards, each 152 (Z) x 100 (Y) x 0.8 (X), standing on the floor and touching each other. Card k occupies X = 0.8k to 0.8k+0.8. Each has two small foot lugs, 3 mm wide, at the bottom corners. 3. Floor: 3 mm thick slab, X = -2 to 19, Z = -97 to 97. Two through-slots under the card bottom corners, each 5 (Z) x 21 (X), centred at Z = +/-74. 4. Side walls: left and right, 14 thick, 106 tall, X = -2 to 19. Each has a vertical channel 156 apart that guides the card edges and a 5 mm wide vertical slot for the lift struts. 5. Follower plate: 154 (Z) x 94 (Y) x 3 (X) at X = 8 to 11, pressing on the last card. A compression spring, 8 mm long, 12 mm diameter, sits between the follower and the back wall. 6. Back wall: 3 thick at X = 19 to 22. 7. Open top: no cover between the side walls above Y = 103. A hinged lid, 200 x 24 x 3, lies along the top edge. 8. Lift yoke: a U-shaped frame. Two vertical struts, 4 x 6 x 130, run in the side-wall slots. Each ends in a thin horizontal blade, 4 (Z) x 1.6 (X) x 0.5 (Y), under a card's bottom corner. A horizontal bar joins them behind the back wall, with a slot 20 long (Z) x 8 wide. 9. Rear box: X = 22 to 80, Z = -97 to 97, Y = -20 to 135. It holds a camshaft along X at Y = 67, Z = 0, with a crank disc, a spring barrel and a clock movement.
Parameters
| Name | Value | Range |
|---|---|---|
| Front glass depth (X) | 2 mm | 0.5 – 6 |
| Front glass height (Y) | 106 mm | 50 – 200 |
| Front glass width (Z) | 170 mm | 50 – 300 |
| Number of photo cards | 10 mm | 1 – 20 |
| Card thickness (X) | 0.8 mm | 0.2 – 3 |
| Card width (Z) | 152 mm | 50 – 200 |
| Card height (Y) | 100 mm | 50 – 200 |
| Card foot lug width (Z) | 3 mm | 1 – 10 |
| Card foot lug height (Y) | 3 mm | 1 – 10 |
| Floor depth (X) | 21 mm | 5 – 40 |
| Floor thickness (Y) | 3 mm | 1 – 10 |
| Floor width (Z) | 194 mm | 50 – 300 |
| Floor slot length (X) | 21 mm | 10 – 30 |
| Floor slot width (Z) | 5 mm | 3 – 10 |
| Floor slot centre (Z) | 74 mm | 20 – 90 |
| Side wall depth (X) | 21 mm | 5 – 40 |
| Side wall height (Y) | 106 mm | 50 – 200 |
| Side wall thickness (Z) | 14 mm | 5 – 30 |
| Left wall centre (Z) | -90 mm | -120 – -60 |
| Right wall centre (Z) | 90 mm | 60 – 120 |
| Guide channel centre (X) | 4 mm | -2 – 19 |
| Guide channel depth (X) | 4 mm | 1 – 10 |
| Guide channel depth (Z) | 5 mm | 1 – 10 |
| Lift strut slot depth (X) | 6 mm | 2 – 12 |
| Lift strut slot depth (Z) | 5 mm | 2 – 10 |
| Follower plate start (X) | 8 mm | 0 – 15 |
| Follower plate thickness (X) | 3 mm | 1 – 8 |
| Follower plate height (Y) | 94 mm | 60 – 106 |
| Follower plate width (Z) | 154 mm | 50 – 180 |
| Compression spring diameter | 12 mm | 6 – 20 |
| Compression spring length | 8 mm | 5 – 20 |
| Spring centre height (Y) | 50 mm | 20 – 80 |
| Back wall thickness (X) | 3 mm | 1 – 10 |
| Back wall height (Y) | 106 mm | 50 – 200 |
| Back wall width (Z) | 194 mm | 50 – 300 |
| Back wall start (X) | 19 mm | 0 – 25 |
| Lid depth (X) | 24 mm | 10 – 40 |
| Lid thickness (Y) | 3 mm | 1 – 10 |
| Lid width (Z) | 200 mm | 100 – 300 |
| Lid bottom height (Y) | 103 mm | 80 – 110 |
| Vertical strut centre (X) | 9.5 mm | -2 – 19 |
| Vertical strut depth (X) | 4 mm | 2 – 10 |
| Vertical strut height (Y) | 130 mm | 80 – 160 |
| Vertical strut width (Z) | 6 mm | 2 – 10 |
| Strut centre distance (Z) | 78 mm | 60 – 90 |
| Lift blade centre (X) | 8.5 mm | 0 – 19 |
| Lift blade centre distance (Z) | 74 mm | 60 – 80 |
| Lift blade depth (X) | 1.6 mm | 0.5 – 5 |
| Lift blade thickness (Y) | 0.5 mm | 0.2 – 3 |
| Lift blade width (Z) | 4 mm | 1 – 8 |
| Rear crossbar centre (X) | 24 mm | 22 – 30 |
| Rear crossbar height (Y) | 50 mm | 20 – 80 |
| Rear crossbar depth (X) | 4 mm | 2 – 10 |
| Rear crossbar height (Y) | 8 mm | 4 – 15 |
| Rear crossbar width (Z) | 160 mm | 120 – 200 |
| Crossbar slot width (Y) | 8 mm | 4 – 15 |
| Crossbar slot length (Z) | 20 mm | 10 – 40 |
| Rear box depth (X) | 58 mm | 40 – 100 |
| Rear box height (Y) | 155 mm | 100 – 200 |
| Rear box width (Z) | 194 mm | 100 – 300 |
| Rear box wall thickness | 3 mm | 2 – 8 |
| Camshaft diameter | 8 mm | 4 – 15 |
| Crank disc diameter | 30 mm | 15 – 50 |
| Crank disc thickness | 5 mm | 2 – 12 |
| Spring barrel diameter | 24 mm | 10 – 40 |
| Spring barrel length | 20 mm | 10 – 40 |
| Clock movement depth (X) | 20 mm | 10 – 40 |
| Clock movement height (Y) | 30 mm | 10 – 60 |
| Clock movement width (Z) | 50 mm | 20 – 100 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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