Messages

151

General Mach Discussion / Re: problems after g76 in turn

« on: September 16, 2008, 12:37:04 PM »

I have the following at the begining

G18 G40 G49 G90 G94 G80

152

General Mach Discussion / Re: problems after g76 in turn

« on: September 16, 2008, 10:00:30 AM »

Its happening on all three of my lathes , two of which are running 2.64 and 2.57

153

General Mach Discussion / problems after g76 in turn

« on: September 16, 2008, 09:45:01 AM »

After I run the thread cycle, g76 , on the lathe in mach turn the machine will no longer make any moves at any speeds other than the rapid traverse speed.  All g1 inputs run at full rapid traverse speed (200IPM) . Not sure how to reset/clear the condition other than rebooting mach .  I thought the g80 at the beginning of the next program should clear it but no luck . I am sure I am missing something simple. Thanks

154

General Mach Discussion / Re: Problems threading on the lathe

« on: September 16, 2008, 09:34:18 AM »

Hi Alex , we sold everything inland , my wife decided we would keep the house on the river. Havent been there in over a year . Hopefully the real estate market will come around and we will put it back on the market. Havent had much time for trail riding in the past year , busy in the shop .

155

General Mach Discussion / Re: Bridgeport Quill Feed Mechanism

« on: September 16, 2008, 09:27:00 AM »

Here are the pics of my setup, not as stealthy as some of the others but works very well .

156

General Mach Discussion / Re: Bridgeport Quill Feed Mechanism

« on: September 15, 2008, 08:55:04 PM »

What I did on mine was to mount a 5/8 ball screw right in front of the quill. For the ballnut I made up a block that is tapped for the ball nut on the top and has a bolt thru the center.  Same method used in the conversion Centroid sells.

The block attaches to the front of the quill in place of the ring that fits over the threaded rod for the quill stop.  I made up a bottom plate to hold the bearing for the bottom that is held in place by a bolt that runs thru the hole the threaded rod went thru .  The top plate contains the bearing for the top end of the ball screw, there isnt really any thing to attach it to so I came off the left side of the head with a simple plate  that supports the top plate.
I then have two sides that along with the top plate make up a box.
Maybe a pic will describe it alot better than words, Ill snap a few pics and post in the morning

157

General Mach Discussion / Re: Machine loosing position when estop

« on: September 13, 2008, 09:21:04 AM »

Thanks Rich , its def a  software bug , I will check it out

Jimpinder whats happening is when I hit the estop button the machine and DRO both stop moving instantly just as they always have and then the DRO jumps by .276 on the x axis and .600 on the z .   The table doesnt coast tp this position and the DRO isnt ramping down. 

 Just as its always done the table and DRO stop instantly , but now the dro on those two axis changes by exactly the value above after estop  .

158

General Mach Discussion / Re: Problems threading on the lathe

« on: September 12, 2008, 08:55:32 PM »

I have tried threading in 50 rpm increments from 50 rpm to 1000, same problem

159

General Mach Discussion / Re: Machine loosing position when estop

« on: September 12, 2008, 07:39:53 PM »

Odd part is I have hit estop thousands of times over the past four years on this very machine  and never lost zero or had the machine coast more than .0005"  but now (post ss instal) if I am moving in the x axis at speeds as slow as .5 IPM and hit the estop it will throw the DRO off .276" everytime , regardless of speed", I am running huge DC servos and their is no way the table is moving anymore than .001 after the estop is hit , and surely not over 1/4" . Its not a high speed or inertia related problem its something software related , If I estop while the z axis is moving , even as slow as 1 IPM it will be off .600" everytime . I am familiar with coasting/inertia after hitting the estop and thats not the problem in this case.

160

General Mach Discussion / Re: Problems threading on the lathe

« on: September 12, 2008, 07:34:06 PM »

I was just hoping to use the original encoder as its already mounted , the disk I need to make would have to be 11" in diam to , may still do it in the morning as I need to thread a part that just wont eaisly fit in my other lathes