Crank (lever)
Component kindcrank(categorymech, DSL namecrank, API v1)
Rigid arm that rotates around a pivot. The pivot sits at the component origin; the arm extends along the local +X axis for length mm. Same single rotational port as a shaft, different visual footprint.
Parameters
- `length` — Arm length from pivot to tip along the local X axis (mm).
- `width` — Arm width along the local Y axis (mm).
- `thickness` — Arm thickness along the local Z axis (mm).
- `pivotDiameter` — Diameter of the pivot boss at the component origin (mm).
Parameters schema
| Parameter | Type | Default | Constraints |
|---|---|---|---|
length | Number | 60 | |
width | Number | 12 | |
thickness | Number | 6 | |
pivotDiameter | Number | 8 |
Ports
| Port | Type | Description |
|---|---|---|
axis | rotational | Rotational port at the pivot. Spin axis is local Z. |
Kinematics
Passive — no propagation rule of its own. The connection at the pivot (typically mech.couple to a shaft) drives the arm's rotation; the tip traces a circle of radius length.
Example
crank "C1" {
length: 60
width: 12
thickness: 6
}
engine apiVersion · 1
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