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Topics - Bjorn Toulouse

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1
*****VIDEOS***** / Dyna Myte DM2400 "Cutting Air"
« on: September 22, 2011, 12:59:52 AM »
Some vids of my DM2400. (which is listed on Ebay)

http://youtu.be/ynH07k56rEw
http://youtu.be/2GMxcDqTzCQ
http://youtu.be/ceSf5ZgQV74


Rex

2
General Mach Discussion / Repeating Wizard At Different Work Offset?
« on: September 03, 2011, 07:13:25 AM »
Is it possible to have a wizard (circular pocket, for example) repeat from one offset to another without starting from scratch?
I would like to create an identical feature in multiple locations on the work piece.

I am using the wizards found in the demo version of R3.043.022.

Thanx,


Rex

3
G-Code, CAD, and CAM discussions / I Wish There Was A Wizard For This!
« on: April 14, 2011, 05:03:01 PM »
What I'm trying to do is machine a convex segment of a hemisphere.
Yes, I know it would be a slam dunk with a lathe, but I'd like to do it on the mill (no manually cranking handles, thank you).

The dimensions of the hemisphere:   R1- base radius - .3935"
                                                    R2- top radius -  .1625"  If you look closely at the setup pics you can see there is a .325" hole in the center of the stock.

Tool: 3/8" ball end mill (tip radius .1875") 

If my math is correct the finished height (H) of the segment will be .231" ( R1 - R2 = H )
The formula seems too simple, am I missing something??

I figure that the program will be a series of circular cuts beginning at the edge of the center hole with each successive cut being .001" larger in diameter as the tool
progresses downward .001" from Z-0.
What I'm having trouble wrapping my head around is the relationship between the radius of the segment and the radius of the tool.

At Z-0.001 the tip of the tool will be engaged on the top of the stock. As the cut progresses the the engagement point will steadily move away from the tool center (zero radius)  towards the side of the tool and full radius at a cut depth of .1875".
Can Mach do this, or do I have to program the X-Y circular moves to compensate for the increasing cutter radius? 

Here's a couple of pics of the setup, any constructive comments will be greatly appreciated.

Thanx,


Rex




4
So, I got a nice new .125" ball nose end mill and set about running the Circular Pocket Wizard.
After making a few dimensional alterations to fit my stock and machine, I hit the "GO" button.
Things were progressing nicely on the initial pass until it reached approximately 3/4", and then things started getting weird.
You can see what happened in the pic.

Changes I made in the Wizard were: setting the tool diameter and stepover percentage, reducing the overall diameter of the pocket to 1.5", reducing the overall depth to .500", as well as feed rate.

I removed the end mill, homed the axes and hit the "GO" button again with essentially the same result cutting air.
The machine is a Dyna Myte 2400 using the OEM steppers and drivers through a SmoothStepper and a Probotix breakout board.

Anyone have any ideas on where to start trouble shooting?


Rex



5
General Mach Discussion / Homing Issues..Assistance Appreciated
« on: September 23, 2010, 12:51:17 PM »
I am having a seriously "NO FUN" time trying to get my DynaMyte 2400 to home.
I am using the OEM home switches which are NO, along with the OEM steppers and drivers, under the influencel of a SmoothStepper and a Probotix PBX-RF break out board.

Axis movement with the Mach jog pendant is functional and accurate.
The system seems (to myself) to be properly configured according to both the manual and the video tutorial,
but the dammmm axes just won't cooperate!

I have tried changing back to the flash screen from the "steel blue", (as I saw Hood mention possible screen set issues in another post), I have tried just about every config I can think of, "Home Sw Safety" enabled and disabled, etc., with no joy.  

.xml file is attached, and I'm ready to give myself a dope slap if someone spots a self induced anomaly!

Thanx,

Rex

6
General Mach Discussion / Save Fixture??
« on: September 19, 2010, 12:13:24 PM »
Yesterday I got my DynaMyte2400 up and running with Mach.
BIG THANX to Jeff Birt at Soigeneris and to Jeremy at Probotix for their assistance with retrofitting the mill and getting me some baseline config data!!
I'm using a SmoothStepper and a Probotix PBX-RF break out board to run the OEM stepper drivers and stepper motors.

To this point I have been using the pendant to jog the axes, measuring travels relative to the Mach DRO output.

When I shut down Mach the last few times I get a prompt asking if I want to "Save Fixture".
What is it asking to save??


Rex

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