Topics

1

General Mach Discussion / 4th Axis help

« on: June 24, 2009, 12:40:34 PM »

 
Ok I looked and I cant find an answer,

I have a router table converted to do cylindrical engrraving.

My problem is feed rates are all screwed up.

When A is combined with X everything goes slow. When X is the only axis movining it is too fast.

I know angular feedrate is used when turnnig A and linear when moving X or Z.

How do I get A to feed in a linear fassion so it works with X?

I am using Artcam Pro and outputing Y2A on a post that was included with it.

I outputs A in degreees. and feed rate in the code does not change.

Please help I have a customer waiting for some parts

2

General Mach Discussion / MDI and DRO not Matching????

« on: February 23, 2009, 08:49:50 AM »

Ok I need a little help.
I have Mach3, I  use it for my lathe and my mill with no issues. steps per are calculated and are acruate with out using the calibration utillity.

I just built a 4 x 4 plasma table using 20 pitch rack, meshing pinion is 30 tooth, pinion pulley is L timing belt 24 tooth. stepper pulley is 16 tooth.

Now because the rack and pinion are spring loaded there is no clearance, so calculations will not be accruate.

Now I have used the Calibration utillty and I get something like 637.************ for steps per. I used a linear scale attached to the axis and calibrated it to 4" and read it to .### 3 desimal places.

Now when I enter G0 X1 in the MDI the dro will go to something like .9995, or some other irrational number.

Is this normal?

None of my other profiles do this. Did I miss something?

Please Help