Messages

61

General Mach Discussion / Re: Radius to end of arc differs from raduius to start line ...

« on: April 23, 2010, 11:15:31 AM »

Heres a snapshot of your code loaded in my machine. the file loads and runs fine

62

General Mach Discussion / Re: Radius to end of arc differs from raduius to start line ...

« on: April 23, 2010, 11:11:22 AM »

Your code works fine on my machine. My mach is 3.042.020

By the way, cab I ask what are you cutting at F3? is it an EDM?

Regards

63

General Mach Discussion / Re: Radius to end of arc differs from raduius to start line ...

« on: April 23, 2010, 12:05:26 AM »

According to your example and the numbers you wrote I testedthis code

G0 X1.1682 Y1.9091
G2 X0.125 Y1.9622 I0.5713 J0.4561


And it works fine, it does not show radius error
Please check if the example is ok

Regards

64

Flash Screens / Re: My flash screenset with touch and wizards

« on: April 22, 2010, 08:18:01 PM »

Thanks for your comments

Im doing some modifications so anyone can use it by customizing an external configuration.
I will make it available as soon as I this it is safe to use it

Regards

65

General Mach Discussion / Re: Aluminium Cutting

« on: April 21, 2010, 09:35:49 PM »

Using onsrud or amana carbide single O flute 1/4" diameter you can cut at 15000 rpm and 0.003 to 0.006 per tooth (45 to 90IPM) full diameter (eventhough i never cutted more than 3mm aluminum in a single pass)
I use a cool air gun and lub myst.

66

Show"N"Tell ( Your Machines) / Re: 2nd Build - Steel Tube, Gantry Style, Mill / Router

« on: April 21, 2010, 08:54:06 PM »

My router has a gantry made from cast aluminum. On each side of the gantry, there are 20mm amt linear guides, with two blocks each, 300mm from block to block.
Check at the figure (by the way I took it from http://www.superiorbearing.com/images/amtbrochure.pdf, very useful doccument)



For what I know, the bigger the guides, the bigger the force they can sustain.
But also by sepparating the blocks along Y you reduce the gantry twist in the MY and MP direction but loose some Y travel.

If I had to mill steel I would think of making the gantry sides as rigid as possible and putting two guides on each side at different heights to reduce twist in the MR direction. And maybe the screw or rack between both guides

67

General Mach Discussion / Re: X Axis Mill vs Gantry

« on: April 21, 2010, 04:26:22 PM »

The method should be:

1) Set the pin active low setting according to driver requirements in the pin setup
2) Adjust the axis direction using the reversed checkbox in the homing setup.
3) Now that the axis move in the right direction, deppending on where you have the home switches, set the home negative checkbox for each axis

Now you should have the axis direction properly configured

Regards

68

General Mach Discussion / Re: X Axis Mill vs Gantry

« on: April 21, 2010, 03:36:10 PM »

Maybe you can combine what Hood suggested with the "Home Negative" checkbox to invert your homing direction

69

General Mach Discussion / Re: X Axis Mill vs Gantry

« on: April 20, 2010, 11:40:05 PM »

You can reverse the axis direction by changing the X direction pin "active low" state

70

Show"N"Tell ( Your Machines) / Re: 2nd Build - Steel Tube, Gantry Style, Mill / Router

« on: April 20, 2010, 11:37:24 PM »

Very interesting project.

I think the most challenging part will be choosing the right guides and transmission.
I have a router with casting aluminum gantry I reinforced both gantry sides by making them 1" thick and added two UPN profiles to each.
Still the problem is at the linear guides.