Messages

6881

G-Code, CAD, and CAM discussions / Re: ViaCad

« on: November 16, 2008, 04:08:30 PM »

One option would be to use the USB port using a Smooth Stepper ( SS ) or find a tower but suggest not one with on-board graphics because you "may" end up needing a SS.
RICH

6882

General Mach Discussion / Re: Lathe Screwcutting problem

« on: November 16, 2008, 10:37:23 AM »

Thanks Hood,
Will modify and see what happens.

Threading works in the latest version of Mach and also SS plug in. To get good threads there should be no backlash in your
lathe. ( i know, i know.....get off my duff and fix the punny lathe already!) That is not going to be the case for a lot of users and they will need to have backlash compensation anad we know that may not give the desired result . The SS still dosn't provide for it as of today. So about only chance for the user to get a thread will be using G32 and having the Gcode produced will be desired. That leaves one with with few options:
1.Write the code
2.Have a program which generates it
3.Modify Brian's Wizard ( generates G76) output by changing "test=false" to  test=true in m1076.m1s as shown in previous post
   using the vscript editor.
4.Use papabears Quick Threading ( don't remember the code output, but, will refresh my memory)
5.Change the macro ( see 3 above )
May be others but that's what comes to mind.
RICH

MODIFIED: ADDED TO 3. ABOVE


 

6883

General Mach Discussion / Re: Lathe Screwcutting problem

« on: November 16, 2008, 08:18:01 AM »

Hood,
Which file needs to be modified. Is it  M1076.m1s located in MACH DIRECTORY as shown or one of the files located
in Mach3\macros\Mach3Turn
Macros are uncharted territory for me. I may be lost in the ocean!

RICH

6884

General Mach Discussion / Re: Lathe Screwcutting problem

« on: November 15, 2008, 09:55:34 PM »

Hi All,
MACH V 3.042.18 using PP / NEC LAPTOP with PP.
Just DRY ran a number of thread cut tests and don't seem to have any problems.
The backlash compensation works during threading, no index problems.
Feedrate changes on the rapids to what it should be, feedrate and rpm DRO change accordingly to slow down of and speed up of the spindle ( speed up only after a spindle slowdown ) ( response seems to be rather quick ), G94 & G95 change correctly.

I like the new diagnostics.

So looks good on my end. BTW my spindle rpm is set manualy. I quess the only bummer is if you don't have a program
which generates the G32 threading code.
Will try some actual cutting tomorrow and see what happens.
RICH

6885

General Mach Discussion / Re: Lathe Screwcutting problem

« on: November 15, 2008, 07:57:04 PM »

Well i quess it's time to find out.
Will post here after i install the latest version on the turtle but solid laptop with a PP.
Never used the G32 for threading but can generate the turning code reguired.
Another case of ADD CNC in the shop! 
RICH
 

6886

General Mach Discussion / Re: Lathe Screwcutting problem

« on: November 15, 2008, 07:16:01 PM »

Hood,
Does backlash compensation work with the G32 when using the PP & V.018?
RICH

6887

LazyTurn / Re: LazyTurn

« on: November 15, 2008, 05:28:40 PM »

Hi All,
In case you want to look at the profile differently.
DOUBLE CLICK RIGHT MOUSE BUTTON TO BRING BACK TO REGULAR VIEW
ART gets another atta-boy.
RICH

6888

LazyTurn / Re: LazyTurn

« on: November 15, 2008, 08:53:23 AM »

Chip,
Are you positing code out of LazyTurn?
RICH

6889

General Mach Discussion / Re: Can someone explain the current draw of these stepper motors, please.

« on: November 15, 2008, 08:42:38 AM »

It takes time to get a good ball screw running just so such that there is no binding.
I had to play with my retrofited Atlas mill a far amount. Adjust gibs for best movement across complete
travel ( all things considered ) with the screw mounting not restricting it. Then adjust the ball screw such that there is no binding at table extremes. Just need to spend time to find the best comprimised position.
RICH

6890

General Mach Discussion / Re: switching from cnc to manual

« on: November 15, 2008, 08:20:51 AM »

If no schematic is available maybe you can trace out the switch wiring and find out what it is doing.
I run my mill in both CNC and manual. It's not a Wabeco. Can disable each axis if so desired but instead just turn off the controller.
Remember that a stepper will generate a current / voltage  when it's turned manualy and thus throws that back into
the drive or what ever it's connnected to.
RICH