CadQuery Centrifugal Fan Builder

Fully parametric centrifugal fan builder in CadQuery

Quick run

docker run -ti cadquery/cadquery \
bash -c 'pip install cq_centrifugal_fan; python -m cq_centrifugal_fan.use_cases.default'

    ...
    7/ 13 Face (1x Wire), Wire (4x Edges) length: ...
        1/  4 Line: (  10.055, -1.78,  100) -> (  ...
        2/  4 Line: (  11.858, -1.78,  100) -> (  ...
        3/  4 Line: (  10.055, -1.78,  100) -> (  ...
        4/  4 Line: (  10.055, -1.78,  94.66) ->  ...

    8/ 13 Face (1x Wire), Wire (4x Edges) length: ...
        1/  4 Line: (  11.858, -1.78,  100) -> (  ...
        2/  4 Line: (  14.654, -1.78,  100) -> (  ...
        3/  4 Line: (  11.858, -1.78,  100) -> (  ...
        4/  4 Line: (  11.858, -1.78,  101.78) -> ...
    ...

Make sure you include --platform=linux/amd64 on arm macs.

Installation and Usage

Install using pip install cq_centrifugal_fan. Then run the default use case which provides an example parametrization.

python -m cq_centrifugal_fan.use_case.default

...
class PenMeasurements:
    OUTER_RADIUS = np.median([7.10, 7.10, 7.06, 7.12, 7.11])
    THICKNESS = np.median([0.85, 0.89, 0.93])

...

phb = cf_shapes.PenHolderBuilder(
    PM.THICKNESS * 2, PM.OUTER_RADIUS / 2, PM.OUTER_RADIUS * 3 / 4
)
obj = phb.build()

Development

Refer to cq_centrifugal_fan/use_case/default.py to find visualization calls. Install cq_centrifugal_fan[dev] and use either a notebook or vscode for live visualization.

Notes

Assemblies are not used and various corners are cut since everything is done in a rush. All improvements are welcome.