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Gear contoure

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eslavko

Gear contoure

Hello...

How to make gear (involute) with librecad?

Thanks.

dxli

Re: Gear contoure

There's currently no native support for involute in LC.

I'm thinking about using the new interpolation spline to create a new type of entity.

Before the implementation is done for LC. You may try the equation plot plugin, as a workaround.

eslavko wrote

Hello...

How to make gear (involute) with librecad?

Thanks.

eslavko

Re: Gear contoure

There is python script for FreeCad to create involute gear that can be maybe converted. But as I see in LibreCad there is no such features as plugin or other external modules.

On 09. 09. 2014 19:48, dxli [via LibreCAD] wrote:

There's currently no native support for involute in LC.

I'm thinking about using the new interpolation spline to create a new type of entity.

Before the implementation is done for LC. You may try the equation plot plugin, as a workaround.

eslavko wrote

Hello...

How to make gear (involute) with librecad?

Thanks.

dxli

Re: Gear contoure

there's a plugin interface, and severalplugins are included in official releases.

actually, two official plugins can be helpful here:

plot math equation, since 2.0.4

read in ascii points

eslavko wrote

There is python script for FreeCad to create involute gear that can be
maybe converted. But as I see in LibreCad there is no such features as
plugin or other external modules.

On 09. 09. 2014 19:48, dxli [via LibreCAD] wrote:
> There's currently no native support for involute in LC.
>
> I'm thinking about using the new interpolation spline to create a new
> type of entity.
>
> Before the implementation is done for LC. You may try the equation
> plot plugin, as a workaround.
>
> eslavko wrote
> Hello...
>
> How to make gear (involute) with librecad?
>
> Thanks.
>
>

dxli

Re: Gear contoure

In reply to this post by eslavko

One more question:

What would be desirable ways to draw an involute?

For example, to draw a circle, we can have many ways:

1, center and radius;
2, center and a point on the circle;
3, 3 points on the circle;
4, tangential to 3 existing circles;

etc.

eslavko

Re: Gear contoure

On 10. 09. 2014 16:27, dxli [via LibreCAD] wrote:

> One more question:
>
> What would be desirable ways to draw an involute?
>
> For example, to draw a circle, we can have many ways:
>
> 1, center and radius;
> 2, center and a point on the circle;
> 3, 3 points on the circle;
> 4, tangential to 3 existing circles;
>
> etc.

I was interestig to draw involute gear.
There should be more question. Position (probably center), number of
teeth, modulo (or diametral pitch & co) ...

Slavko.

eslavko

Re: Gear contoure

In reply to this post by dxli

On 10. 09. 2014 14:52, dxli [via LibreCAD] wrote:
> there's a plugin interface, and severalplugins are included in
> official releases.
>
> actually, two official plugins can be helpful here:
>
> plot math equation, since 2.0.4
>
> read in ascii points
>

Ok I find that. But seems that for plugin I need to recompile LibreCAD.
It's not some scripting language...

Slavko.

gaganjyot

Re: Gear contoure

In reply to this post by eslavko

eslavko wrote

On 10. 09. 2014 16:27, dxli [via LibreCAD] wrote:
> One more question:
>
> What would be desirable ways to draw an involute?
>
> For example, to draw a circle, we can have many ways:
>
> 1, center and radius;
> 2, center and a point on the circle;
> 3, 3 points on the circle;
> 4, tangential to 3 existing circles;
>
> etc.

I was interestig to draw involute gear.
There should be more question. Position (probably center), number of
teeth, modulo (or diametral pitch & co) ...

Slavko.

Right now LibreCAD 2 doesn't supports scripting. We are in process of making a newer version of LibreCAD from scratch and has support for scripting using lua. Ries has ported the python script to Lua for LibreCAD.

You may see the demo here,

http://skitch.rvantwisk.nl/~rvt/bmk/tmp/LibreCAD_-20140409-162814.jpg

But since LibreCAD 3 is under heavy developement and read/write support for files is yet to be implemented, So at the moment if wont be available.

You can even check the code for Gear at

http://pastebin.com/ts3XCXqa

--
Thanks
Gaganjyot

James_S

Re: Gear contoure

In reply to this post by dxli

dxli wrote

there's a plugin interface, and severalplugins are included in official releases.

actually, two official plugins can be helpful here:

plot math equation, since 2.0.4

read in ascii points

I was about to suggest the same thing but you were first. I think this is the best way .