Messages

141

General Mach Discussion / Re: Bridgeport Quill Feed Mechanism

« on: September 17, 2008, 06:44:06 PM »

Yes mine was originaly 3/8x24 (NF) also

142

General Mach Discussion / Re: Bridgeport Quill Feed Mechanism

« on: September 17, 2008, 12:57:21 PM »

All of our work is 2.5 axis stuff. I would not want this system if I were doing 3 axis jobs. I just don't think the single 1/4-28 "bread and butter" bolt would survive through the long haul of repetitive up/down motion.

The bolt in mine that holds the ball nut mount in place on the quill is 3/8x24 tpi cap head allen screw , Mine has run aprox 30 hours a week for over 4 years with no problem

143

General Mach Discussion / Re: problems after g76 in turn

« on: September 16, 2008, 09:37:17 PM »

I just double checked, 2.61 on one machine, 2.57 on the second and the latest development version on the third and all three seem to be having the problem . The one with the latest version .008 I havent run a full program with after the g76 on this paticular machine but when I type in g1 z** f1. in the MDI line the z axis moves at 600IPM , which is quite an eye opener since the saddle and tool changer wieght somewhere over 500 lbs

144

General Mach Discussion / Re: Problems threading on the lathe

« on: September 16, 2008, 09:28:50 PM »

I havent gotten it to work 100% but I read your post on your threading tolerances increasing drasticly with the upgrade to .008 , loaded the latest development version and its doing much better. I decided to thread the 400+ tubes I need on the other lathe and get back to this one when I can get another smooth stepper.   I really need to get this one threading as it has a 3" hole thru the spindle, 30hp spindle motor , 12 station tool changer etc etc.

I sent the fellow at warp 9 an email this past weekend but havent heard anything back. I was hoping to get one in hand before the week ends , plenty of other stuff to do in the meantime.

145

General Mach Discussion / Re: Bridgeport Quill Feed Mechanism

« on: September 16, 2008, 09:24:01 PM »

Mine has a 3hp 3phase motor , I am using a teco 100 vfd and leave the belt on the pulley one down from the top . Allows the spindle to run between 800 and  3000 rpm , it also has a slow speed set of windings that run the motor at half those speeds, can also  switch into back gear for slower speeds which I have only done maybe twice .

also has a pretty big flange on the motor, aprox 10" in diam ,  I have seen a website where the fellow makes an adaptor plate and fits a 90vdc spindle motor

146

General Mach Discussion / Re: Bridgeport Quill Feed Mechanism

« on: September 16, 2008, 08:36:54 PM »

That looks nice Hood, I wish I had made mine a little narrower, I had visions of optical limits dancing in my head when I  made mine . Mine stands off the front of the machine far enough its easy to get a wrench on all the bolts with no problem

147

General Mach Discussion / Re: problems after g76 in turn

« on: September 16, 2008, 08:07:58 PM »

so g94 after g76 should bring me back to IPM

148

General Mach Discussion / Re: problems after g76 in turn

« on: September 16, 2008, 07:50:31 PM »

Other than the position before tool change this is the code straight out of the  wizard in Mach ,  It runs fine but in all the machines I cant seem to call out the speed in anything run after a g76 without rebooting mach . I can run the same code as above hundreds of times a day with no problem , but if I type in a G01 F** after a g76 it runs everything at rapid transit speeds , which gets quite exciting on the machine that will run 600IPM . Any programs run after a g76 all operate at rapid speeds regardless of the speeds called out in the program.

The following is the first line of the code I need to run after the g76 and I thought it had the proper gcode to cancell the canned cycle

G18 G40 G49 G90 G94 G80

After the g76 I am just running a basic turn cycle generated in the turn wizard

149

General Mach Discussion / Re: problems after g76 in turn

« on: September 16, 2008, 07:40:35 PM »

Here is the basic code I use to cut 20 tpi internal thread in 1.5 ID 4130 tubing.


G0 G40 G18 G80 G50 G90
G00 z4
x4
T1010M6
G00  X0.77
G00 Z0.1
G00 X0.745
M03 S200
M08
g4p2
G76 X0.778 Z-1.05 Q2 P0.05 J0.003 L45 H0.002 I29 C0.025 B0.0001 T0
M9
M5
M30

150

General Mach Discussion / Re: Bridgeport Quill Feed Mechanism

« on: September 16, 2008, 02:29:00 PM »

good guesses , I was walking buy the machine with it in my hand one day and dropped it on there , been about 4 years now . If I take it off Ill need it the next day for something and wont be able to find it