Messages

51

General Mach Discussion / help with step/direction vfd lathe spindle

« on: February 23, 2012, 12:07:33 PM »

machine is a converted 12x36 lathe 2axis (xz)
mach turn
C11-G bob
2hp 3phase motor  3500rpm
hy series vfd   =  http://www.ebay.com/itm/120705048710?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

my mach mill will run the motor fine with the same vfd.
the lathe vfd is set up 100% the same settings and seems to work fine.

i punch in the same motor tuning in turn and it is nothing like the mill.
i tryed this guys method and it kinda helped me tune it some.
http://www.machsupport.com/forum/index.php/topic,18580.0.html

the problem is i can get the top speed right on but it is not linear or correct at say half speed.
i am not sure on how to adjust the motor tuning to get the speed right or close thru out its range.
all of the spindle tuning parameters are very confusing to me.

i check the bob for 10v on full powert and it says 5v ish?
it seems i need some way to tune the pot on the bob and then start the spindle tuning.
i have a rpm tach on the spindle so i can see real rpm no problem.
any help is welcome. thanks

52

G-Code, CAD, and CAM discussions / Re: serious dolphin turn issues

« on: February 17, 2012, 10:31:52 AM »

so i found out that for some reason i have to start in my cad and go thru that to the cam. once i do this is makes good code.
if i just open up a file in the cam then is makes crap code. lol
whatever!
at least now i know its tricks.
thanks for the help

53

G-Code, CAD, and CAM discussions / Re: using dolphin turn to make trochoidal milling code?

« on: February 16, 2012, 10:59:55 PM »

it seem to me you would just have to attack each side indavidually but it is pretty simple. just change the tool profile in the cam.

54

G-Code, CAD, and CAM discussions / Re: using dolphin turn to make trochoidal milling code?

« on: February 16, 2012, 10:52:20 PM »

final cam set up

55

G-Code, CAD, and CAM discussions / Re: using dolphin turn to make trochoidal milling code?

« on: February 16, 2012, 10:49:59 PM »

i just cleaned up the scraps on the code conversion and it seems air tight.



now how do we get a post processor or something to do this quick and easy?
i can do this now in about 5 minutes

56

G-Code, CAD, and CAM discussions / Re: using dolphin turn to make trochoidal milling code?

« on: February 16, 2012, 10:41:27 PM »

ok, simpler code
i took the DT g code and pasted it into a milling folder with the right goods.
converted the IJK's and the XYZ"s in wordpad reall quick.
the only strange thing is i had to set DT tool profile to rear instead of front.
it seems to work flawless.

57

G-Code, CAD, and CAM discussions / Re: using dolphin turn to make trochoidal milling code?

« on: February 16, 2012, 09:52:32 PM »

code from the lathe cam

58

G-Code, CAD, and CAM discussions / Re: using dolphin turn to make trochoidal milling code?

« on: February 16, 2012, 09:51:33 PM »

cad drawing


cam

59

G-Code, CAD, and CAM discussions / using dolphin turn to make trochoidal milling code?

« on: February 16, 2012, 08:40:11 PM »

it seem to work to just change the code from xz to xy in wordpad.
change the g18 to g17 and such.
anyone ever try this?

60

G-Code, CAD, and CAM discussions / Re: serious dolphin turn issues

« on: February 02, 2012, 09:36:58 PM »

thats what i thought.
i think i am not getting the right combination of mach and dolphin.