Messages

1031

G-Code, CAD, and CAM discussions / Re: Mach3 not Doing what GCode says?

« on: December 08, 2011, 11:44:11 AM »

You need to tune the velocity to the maximum reliable speed it will move along with the fastest acceleration with out skipping steps,  then the cutting speed is controlled with the F command in the g-code.

This way you have maximum rapid moves with the smoothest feed moves as the acceleration is not ramping up and down between moves.

Graham

1032

G-Code, CAD, and CAM discussions / Re: Mach3 not Doing what GCode says?

« on: December 07, 2011, 06:23:41 AM »

Is that the fastest your machine will go, 6.7"/min is very slow looking, I would have expected figures 10 times that for the velocity or have you limited it to this for a reason?

Graham

1033

G-Code, CAD, and CAM discussions / Re: Mach3 not Doing what GCode says?

« on: December 06, 2011, 06:28:04 AM »

It sounds as if the g-code is in small line segments, turn on the constant velocity mode and see if that helps.

Graham

1034

VB and the development of wizards / Re: User Label

« on: October 28, 2011, 03:37:44 AM »

You could hard code it into the Macropump

1035

G-Code, CAD, and CAM discussions / Re: First Project on mill .. so far not so good :(

« on: October 07, 2011, 06:01:57 AM »

Is the z axis actually moving .125"?

If yes then the steps per are correct.

If no then reset them so it will move .125".  this in no way affects the problem you have though, even if the steps/per are wrong the axis should still repeat.

Is the start position moving closer to the table?

If yes then its loosing steps when trying to lift the weight of the head, slow things down, reduce acceleration and velocity by half, and/or counter balance the head.

If no more like a breakout board problem or electrical interference, is the router spindle power cable next to the z axis motor wires.

1036

General Mach Discussion / Re: Keeping track of machine and tool use

« on: October 03, 2011, 08:32:38 AM »

Sorry there is no tool life management built into mach3.

1037

General Mach Discussion / Re: Ramping into a pocket

« on: September 29, 2011, 04:22:22 PM »

Ok, post a sketch/picture of the oval, depth of pocket, size of cutter, max plunge depth etc.

Graham

1038

General Mach Discussion / Re: Ramping into a pocket

« on: September 29, 2011, 03:26:45 PM »

We need more detail to answer this one

Graham

1039

General Mach Discussion / Re: Changing Offset With G-code

« on: September 27, 2011, 10:21:36 PM »

normally the finished face of the part is Z0 and any stock is allowed for in the set up of the Z datum. E.g. touch on with datum tool zero out Z then adjust Z datum by the stock amount to be removed.  This way any following tools can be set from the top face.  Or if working with standard tools with known tool lengths they can just be put in and used without needing to set new offsets.

Graham

1040

General Mach Discussion / Re: Rapids not reaching max speed

« on: September 27, 2011, 11:42:32 AM »

what do you get if you enter G91 G00 X-20. into the MDI and press enter?

This will do a -20" move from wherever the x axis is stood so make sure you have the room to do it.

Graham