[Plugin] Hypocycloid Cam Profile Generator v1.0.0

Dan Rathbun

[Plugin] Hypocycloid Cam Profile Generator v1.0.0

Generate 2D profiles of hypocycloid cams for cycloid drives.

SEE wikipedia: Cycloidal Drive
This has nothing to do with curves made with the Spirograph toy !

Translated into SketchUp Ruby, from Alex Lait's Python script

Aal_Hypocycloid_1_0_0.rbz
Git repository : Issues & Feature Requests

Notes:

Does not currently do ANY checking for sane input values and it
is possible to create un-machinable cams, use at your own risk.

Suggestions:

Eccentricity should not be more than the pin radius.
Has not been tested with negative values, may have interesting results!

renderiza

Time to google what hypocycloid means...sounds good!

pilou

Please post image on the first post of a plugin!

Does it this

or this ?

pilou

Ah that is something like this!

renderiza

When I was a kid I remember having that toy!

Dan Rathbun

@unknownuser said:

Please post image on the first post of a plugin!

I will ... and there are reference links in the file headers.

pilou

I don't see thickness like your image result on the first post
I miss something ? (just tested in v7)

Dan Rathbun

@dan rathbun said:

[Plugin] Hypocycloid Cam Profile Generator v1.0.0

Generate 2D profiles of hypocycloid cams for cycloid drives.

I push-pulled the face up manually.

This plugin is for creating profiles for CNC routing machines that will cut the cam.

Dan Rathbun

@dan rathbun said:

@dan rathbun said:

[Plugin] Hypocycloid Cam Profile Generator v1.0.0

Generate 2D profiles of hypocycloid cams for cycloid drives.

I push-pulled the face up manually.

This plugin is for creating profiles for CNC routing machines that will cut the cam.

OK driven and I are planning to 3D-ize this plugin.
The old CNC dxf way is out of style. John wants to use SketchUp to have cams 3D Printed.

So we'll be making new 3D features. (But we'll leave the 2D layers with the 2D profiles.)

Rich O Brien

added to store

gullfo

http://en.wikipedia.org/wiki/Epitrochoid
http://en.wikipedia.org/wiki/Hypocycloid

looks more like the former than the latter...

and then there's:
http://en.wikipedia.org/wiki/Hypotrochoid

Dan Rathbun

@gullfo said:

looks more like the former than the latter...

SEE wikipedia: Cycloidal Drive

This has nothing to do with curves made with the Spirograph toy !