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Messages - RICH

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6721
General Mach Discussion / Re: My X-Axis is losing steps!
« on: December 22, 2008, 05:33:55 PM »
Don,
When you get home, the testing of the stepper awaits you.
Till then.......pay,pay,pay or no play! ;D
RICH

6722
General Mach Discussion / Re: My X-Axis is losing steps!
« on: December 22, 2008, 01:51:45 PM »
I see what you seeing Hood and if it's a cap it dosen't belong there.
RICH

6723
General Mach Discussion / Re: Lazycam Turn
« on: December 22, 2008, 01:38:36 PM »
Mike,
Attachment showing effect of tool settings and passes.
RICH

6724
General Mach Discussion / Re: Lazycam Turn
« on: December 22, 2008, 01:12:12 PM »
Attached file is a combination of the tutorials posted in #10 & #12 which alllow printing.
RICH

6725
General Mach Discussion / Re: My X-Axis is losing steps!
« on: December 22, 2008, 11:06:34 AM »
Hood,
In reply to your post #18 and my post #17 info from the Gecko site.

"If the cable run from the power supply to the drive exceeds 18” or if a fuse is used, place a 470uF
100 VDC capacitor across each drive’s power terminals 1 and 2. Make sure the capacitor’s “+”
lead goes to terminal 2 and that its “-“ lead goes to terminal 1. The capacitor is necessary
because the drive draws power supply current in 20 kHz pulses and needs “flywheel” to work
properly."

RICH

6726
General Mach Discussion / Re: My X-Axis is losing steps!
« on: December 22, 2008, 07:22:05 AM »
Hood,
You should have caps on the 201 drives as noted in the liiterature from Geco.
That cap can save you from blowing a drive.
Rich

6727
General Mach Discussion / Re: Lazycam Turn
« on: December 22, 2008, 07:13:35 AM »
I don't use turbocad so can't comment it other than all dxf's are not created equaly out of different cad
programs. I have seen this for years and continues even today and just don't even deal with it anymore.
Professioinaly, if the vendor provided dxf is not 100% importable, equivalent money is withheld to redraw the drawing
until submitted version works, that's in my specifications and must be met. Some just don't work.

LazyTurn will not gnerate profile / finishing cuts yet. It only generates rough cuts and they are basicaly
numereous horizontal paths. The paths do follow the profile within the clearance you select and dependant
on tool definition  You can't expect a 1/32 radius tool to go into a < 1/64" radiused corner. You will
get a different following of the rough cuts to the profile dependiing on how the tool is defined.

You can edit out any gcode you wish from the text / tap file with a word processor such as notepad.

Optimnize is defined or commented on in the video tutorials down loadable or viewable from this site.
It basicaly cleans up the file and optimizes the order  for use by Lazycam.

Sorry, I protected the PDF's, but will repost them so they print later today.

Suggest you follow postings in the LazyTurn thread for first hand info about it.


RICH


6728
General Mach Discussion / Re: My X-Axis is losing steps!
« on: December 21, 2008, 09:42:51 PM »
Don,
Just so you know, i am are trying to help and understand frustration. So bear with me on information requests.
As i said before, it could be any part of the system or combination of the components. Sometimes easy to fiind
and sometimes just elusive as a fox. Little things can be additive and as you go deaper into the each and every
item it can even become un-nerving.

What kind / accuracy grade of ball screws are you using?
Are the results the same along the axis? (say try three different points along the screw travel, if 10 inches of screw travel,
 then say at the 2-3"  /  5-6"  / 8-9")
Can you check or verify the steps / unit over a longer distance of travel? ( say 10", 5" movements )
But before you aggrevate yourself, or we drive you crazy, try the following as it is easy to do.

The only way I know of isolating / checking the steps sent to a stepper without electronic gismos would be to
to put a index mark  ( fine line) on the motor pulley ( can increase the size via paper circle), send a G0 move for  say  1 rev of motor, set the pointer on the index mark,
do the same move,when it completes the move the indexed point should be right a pointer. Over and over again. if you do the same move for 15  or 50 times does it come off the mark? The system has been isolated down to software + sending devices+motor. Thus it eliminates the rest of mechanical items in checkout.  You can work your way down the mechanical train and look for changes in movement. You can also choose to not microstep.
Poor mans encoder readout.  ;)
RICH
 

6729
General Mach Discussion / Re: Lazycam Turn
« on: December 21, 2008, 04:51:35 PM »
MIKE,
Here is another little tutorial for you for getting the profile out of LazyCam Turn.
Now make note of the code lazyCam Turn generates on the profile.
My code changes in the txt or tap file are in ( ) but dry run the code and see if you pick
up on the quirky thing out of the profile generated code.
RICH

6730
General Mach Discussion / Re: Lazycam Turn
« on: December 21, 2008, 12:41:55 PM »
Mike,
Please bear with me.
How are you generating your dxf file?
What version of dxf are you saving it as?
What program is generating the dxf file?
see my comment

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