Messages

271

General Mach Discussion / Re: CONTOUR PROBLEM! Machine takes shortcuts on corners !

« on: December 08, 2006, 04:54:38 PM »

And english is not my mother tongue! 

Thanks 
Fernando

272

General Mach Discussion / Re: CONTOUR PROBLEM! Machine takes shortcuts on corners !

« on: December 08, 2006, 11:34:54 AM »

Is this a router? plasma? laser?
Dont always go with what you see in the toolpath window it may not be true to what it will actually cut, Specially if you are simulating the toolpath, instead of a cylce start.
another thing. the setting you are using on CV stop angle wont do anything to 90º corners, if you want it to stop on 90º corners the setting would have to be 89.
My suggestion.
1. Leave settings as they were (CV on, CV dist and angle turned off) and cut a part.
2 Put a G61 in the begining of yout g-code and cut a part.
3. Put a G64 in the gcode, and turn on the CV dist and angle, put something like 89 in the angle, and 0.5 in the distance, and cut a part.

Compare the 3 and see which one is better.
My guess is that the part in suggestion 1 will have the most roundness but will cut faster, and with less shaking of your machine. Part 2 should cut without rounding but slower and with more machine shaking. Part 3 should be the lesser of two evils.
Regards
Fernando

273

Tangent Corner / Re: CNC telescope mirror grinder.

« on: December 06, 2006, 12:22:24 PM »

Benny,
About 5 or 6 months ago, there was a discussion in one of the yahoo groups about a guy trying to do this. Cant remember if it was in the DIY-CNC, CAD_CAM_EDM_DRO, or the mach group. I think he was talking about bigger than 12 inches, and tolerances that scared me.
Regards
Fernando

274

VB and the development of wizards / Re: Coordinate system rotation

« on: December 01, 2006, 04:28:13 PM »

Brian,
Could you elaborate on this?
Regards
Fernando

275

Feature Requests / Re: 5-Axis Kinematics.

« on: December 01, 2006, 04:23:17 PM »

I second that too,
What I would like more than that would be the proper aplication of kinematic formulas, so that axis moves are not made based on ends of moves but by the actual toolpath.
Regards
Fernando

276

Feature Requests / Re: Stock and work probing

« on: December 01, 2006, 01:01:44 AM »

i think this would be a good thing, even better would be being able to touch off both sides of the stock, in a couple of places in each side, and if the stock is not perfectly square, have mach calculate the skew and transform the toolpath to compensate for that out of squareness.
I find it hard to do though.
Regards
Fernando

277

Tangent Corner / Re: Making of a spindle

« on: November 26, 2006, 07:43:16 PM »

Just a little bit.
lets see if it works well
cuz cutting aluminum with a makita router just didnt work that well

278

Tangent Corner / Re: Making of a spindle

« on: November 26, 2006, 07:26:23 PM »

Hood,
Thanks for the offer, I live in Mexico!
I talked to littlemachineshop.com and he told me his unit would handle a 2HP motor @5,000 RPM.

279

VB and the development of wizards / Re: Mach Feature - is this available?

« on: November 26, 2006, 03:56:07 PM »

You could make a wizard,
Have the first page have a button for each type of thread, then have each button take you to a second page that has buttons for the next options, and so on and so forth. On the last page you can have DRO's where you can set parameters for your threading.

280

Tangent Corner / Re: Making of a spindle

« on: November 22, 2006, 11:19:53 AM »

thanks for the reply Graham,
I thought it was too good to be that easy.
Ill look into a used bridgeport spindle, and Ill ask www.littlemachineshop.com to see if their spindle assembly can take a bigger motor.
Regards
Fernando