Non-circular boring. (Linuxcnc fun)

Brilliant work

alkabal wrote:

Really cool stuff, for now my mill is only 10% finished so i can't play with your component but i'm really impatient.

Actually i try to include (difficult to understand) to my lathe config something similar done by andypugh for excentric turning (oval + polygon).

I'm waiting for other reply lol

Br

On a version of Linuxcnc 2.8 and above, there will be a number of sims installed on your system you can play with using external offsets. Pretty sure that is what Andy used here to offset the axis based on the spindle position.

I also output actual position offsets for using the 'offset' component and limit3. I tested it and it seems to work very much the same.

rodw wrote:

alkabal wrote:

Really cool stuff, for now my mill is only 10% finished so i can't play with your component but i'm really impatient.

Actually i try to include (difficult to understand) to my lathe config something similar done by andypugh for excentric turning (oval + polygon).

I'm waiting for other reply lol

Br

On a version of Linuxcnc 2.8 and above, there will be a number of sims installed on your system you can play with using external offsets. Pretty sure that is what Andy used here to offset the axis based on the spindle position.

More fun.. Aluminum!





You can see the spindle encoder resolution.

It does an amazing jog in the corners.
Linuxcnc is pretty damn cool.
What the next challenge...

Isn't it? I would like to add a bit more functionality to the comp.. I would like to make it cut outside polygons. (not that you really need to on a mill - but on the lathe it would be cool.) I would also like to add a rotation per z movement. A coworker mentioned it - You should be able to create a twisted polygon. (I think it would be cool to make a 'nut and bolt' that was a twisted hex..)

Don't know why... Because?

cmorley wrote:

It does an amazing jog in the corners.
Linuxcnc is pretty damn cool.
What the next challenge...

outside polys could be interesting for building a driving square inside a bore - rare but interesting.
So no gcode for this right?
If that is the case a M code to turn it on and off would be handy.

Chris

oh outside poly for making molds too .. opens up possibilities

I think packaged up in a nice re-map would be good. But currently I am just setting hal pins from gcode (m64/65 and such for enabling/diabling and so on). if you are slaving the x axis to the radius of the polygon - then yes - gcode 'modifies' the motion.

cmorley wrote:

oh outside poly for making molds too .. opens up possibilities

Hi

I see you speak about lathe, did you think your actual .comp can work with lathe ? Can you think about including oval/eccentric ?

I will like to do a gladevcp panel like Andy lathe-macro for polygon/oval/eccentric but for now this is less than a beta. (started without your comp)

Br