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Topics - Machellar

Pages: 1
1
hello all!!

trying to finish the retro on my 96 Arrow 500 and we're a little stuck on the ATC.
during normal operation of the spindle, the spindle runs with the speed command (M3/M4 S***)
when changing a tool the spindle needs to run as a axis - "C" to allow the spindle to orient to a position that allows the alignment lobe to fit in the tool holder.
The C axis reads in degrees 0-360+ and the tool change needs to be done at approx. -90 degrees

our problem is - once the "C" DRO reads +/-185,000 degrees, or over, it will home the spindle but will not reset the DRO to 0, so the spindle can move to -90 degrees for the tool change to complete. it will change a tool if the C reads +180000 or -180000 degrees. since it is set to degrees it only takes about 8 seconds at 4000 RPM to reach this 180000 reading.
i have changed the Rotational DRO to roll over so it only ever goes to 360 degrees thinking that might fix it but the encoder keeps piling on the degrees in the "C" axis reading window

has anyone run into this before?
are we looking at the orient feature the wrong way?

thanks for any input

Mac

2
Brains Development / safety door interlock brain
« on: October 31, 2012, 02:31:01 PM »
good day all

would anyone have an example of a door interlock brain... my machine can be run either as manual or CNC. i would like to be able to run the lathe with the door open for manual operation then only closed for CNC operation. i'm using a 24VDC coil operated interlock.
I've been trying to develop a brain (with no success) to do this. i think i need one that sees the input is met (key in interlock) then output opens/closes when "cycle start" is engaged. i don't know enough about brains to figure this out just yet or if that's even how it needs to happen. ???

thanks for any suggestions
Mac

3
good day all

would anyone one know why an M6 command will not change the number in the TOOL# DRO to anything but a 0
I suspect it is in the macro but i'm not sure what should be changed.
i don't have a tool changer on my lathe but my tool post will hold up to 4 tools and with an M6 command, the saddle, rapids to a tool change position, set in the diagnostics screen and the TOOL # DRO sets itself at 0 - if i forget entering the tool number in the DRO before hitting the cycle start... the machine rapids to the limit switches  :o NOT GOOD!
I have "stop spindle and wait for cycle start" turned on in the Mach3 general config window

I've attached the macro if anyone has time to look and see where my problem might be

thanks all

Mac

4
General Mach Discussion / Turn Drill Wizard
« on: February 22, 2012, 09:05:32 AM »
good day all

just downloaded and installed the drill wizard for Turn and i can't get the "Cycle Type" to toggle through the different cycles
any idea what i'm doing wrong? ???

this is the wizard i'm using
http://www.machsupport.com/forum/index.php?action=dlattach;topic=16533.0;attach=23364

everything else in the wizard is working

thanks folks
Mark

5
General Mach Discussion / tool change position
« on: February 02, 2012, 11:14:52 AM »
good day all

anyone out there know if there is a plug in or something for MachTurn to set the tool change position. Maybe even an add-on screen that would have that option. I can see it in MachMill but not MachTurn.
I don't have a ATC on my lathe but when i preform a M6T*, it rapids the Z all the way back to the home/limit switch. Almost **** myself when it made it's first tool change after the retrofit.
Scared the livin' bejezzers out of me.  :o
Good thing only cutting air without a tool.

OR does someone out there have a trick up there sleeve for this without adding new switches and such

thanks
Mark

6
General Mach Discussion / Arrow 500 retrofit
« on: December 20, 2011, 03:29:52 PM »
good day all

just finishing up the retrofit on our Romi/Bridgeport lathe - new Mach3 controller - new Kollmorgen drives and motors with a Hitachi VFD - it's been a challenge but, we're just about there - need the spindle speed tweaked and i can start cutting again...

next is our Arrow 500 - same thing, new Kollmorgen drives and motors. we've decided to go 480v on all motors and drives meaning we had to have the original spindle motor rewound from 230v to 480v since, they say, there is no such thing as a 12000 rpm motor that runs 480v. There will be an REFU drive controlling the spindle motor (REFU is a German company). By the way - the guys that did the rewind on the motor did a sweet job!  :P

What we have learned from the Romi refit will make this one quite a bit easier and faster... until we get to the 21 tool ATC - how the heck is this going to work?  ???
I've been reading through some of the "tool changer" posts and have some idea but, not really.
I know we'll be using a PLC (Allen/Bradley) that we carry in our central stores but i'm not sure were to start

any advice/direction would be appreciated

thanks

Mark



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