Bridgeport Ez Path Software Download
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My shop has an opportunity to procure, at a seemingly reasonable cost, one of these Bridgeport/Romi machhines. It is reportedly/supposedly in very good mechanical shape but has a board that comes loose and shuts the machine off while in cycle. They have decided to just replace the machine. It is on the order of ten years old.
My questions are: How accurate and repeatable are these machines? How rugged are they? How user friendly is the control? How sophisticated is the control? Parts and service availability? Any other first hand user experience or input would be much appreciated. The long and short with the decision to acquire comes down to this.
We do not have a NC/CNC lathe at this point. Would getting this machine be 'a mediocre NC lathe is better than none at all' or are they relatively good machines for.005 or better work. We had one at work. Good iron, pretty rugged and accurate, plenty good for.005 or better, should be able to hold.001 minimum.
Control, hmmm, I didn't like it but that's probably just me, I like g-code. Screen is to small, monochrome gray scale, I used to set a 14 in color monitor on top of the cabinet, worked pretty good. You should be able to fix the board that 'comes loose', zip tie it in, use foam on the cover blah, blah, blah, be creative. They're not the fastest on the block though. Using it in manual mode takes some getting used to as there is no 'feel' when turning the handwheel, you are just turning the encoder afterall. We had a Dorian manual tool changer, I think it had 6 stations, don't recomend it, it sounds good at first but man, is it hard in your hand and wrist. I wouldn't pay a lot for it unless it's pristine.
Just my.02 Dave. Accuracy no prob for.005-wouldn't promise better than +/-.0005, though Sturdy and rugged Conversational control and very learnable-get the manuals Not a sophisticated control Unsure about parts and service-Hardinge owns Bridgeport, I think Romi is out of Brazil (I think) Fast enough and easy enough for a starter-type CNC lathe. The chuck is a lead screw chuck, but interchangeable with many types, 2-jaw, 3-jaw, 4-jaw, etc.
Large enough memory to hold lots of programs and it has a floppy drive. ENDORSEMENT: I would love to have one in my garage. Good luck and have fun!
We had one where I used to work, 1998 or so model. Worked OK but I absolutely hated the control. Made me want to pull all of my hair out. Maybe not bad for production but for onesy twosey prototype work it was awful. The tailstock was a nightmare.
If it was ever fully extended a key would drop inside the assembly and take 2 hours to disassemble and replace.(happened at least 4 or 5 times that I can recall) A terrible design in my opinion and as mentioned before a non-adjustable tailstock isn't such a good thing. No major mechanical probs but the controller PC (a standard 486) crapped out with about 600 hours on it.
Fixed it ourselves for not a lot of money but come on, 600 hours? It's certainly better than nothing but a pretty limited machine in my opinion. I wouldn't go for it unless the price was very low. See if this link works. It's a link to two similar machines listed on machinetools.com If you have the operating/programming manual, programming can be learned relatively quickly.
You can program regular rapid/feed moves or use the canned cycles. Once you figure out the canned cycles, it's easy to throw together a program. Much easier than G-code, but somewhat more limited. The newer machines have variable frequency drives instead of a gear box. These also seem to be the machines with a single piece tailstock. They are definitely junky, but again, I'd like one in my garage too. Alright - got it powered up and found and fixed my first problem.
The motherboard was loose in its socket so we sorted that with a block of phenolic and some double back tape between the power supply and the loose board. So the machine fires up and I get the 'Home Axes' message. The keyboard on the console does not seem to work but the computer keyboard works just fine so I entered 3 then + to start the homing cycle. Nothing happens. The error message that comes up is'following Error Limit Exceeded'. I think I know what that means but am not sure.
In addition if I am correct and it is a encoder/parameter problem what is the best fix? This machine has not run in quite a while so maybe it is grumpy. Alright - got it powered up and found and fixed my first problem. The motherboard was loose in its socket so we sorted that with a block of phenolic and some double back tape between the power supply and the loose board.
Bridgeport Ez Path Software
So the machine fires up and I get the 'Home Axes' message. The keyboard on the console does not seem to work but the computer keyboard works just fine so I entered 3 then + to start the homing cycle. Nothing happens. The error message that comes up is'following Error Limit Exceeded'.
I think I know what that means but am not sure. In addition if I am correct and it is a encoder/parameter problem what is the best fix? This machine has not run in quite a while so maybe it is grumpy. TIAWhat happened 'tween 2-5 and 8-27 this year?
Long time no do? I picked up 3 machines all within the same time frame.
I actually picked this one up from GSA Excess in December. The other agency took their sweet time boxing it up and shipping.
Bridgeport Ez Path Lathe Software
In the meantime I had to move all the machines around - well my partner and I - during the times we weren't turning handles. Finally all the pieces cam into place but then we had to wait to get them wired in as they are all 460 v machines. All that wiring was completed Monday this week. The DMU is up and running and the next effort will be towards this lathe. Apestate - I know the Z axis is free and will double check the x.
Todays update. On a hunch I figured that since this lathe has sat for so long that sticktion might be part of this problem. I refreshed the BiJur central oiling system and gave it a few good shots. Sure as God made green apples the X axis homed. Unfortunately the Z did not. I removed the panel from the tailstock end and was able to turn the Z axis ballscrew with just a set of vise grips - and no I did not leave any marks. Fired her back up again and the X is homing but the Z refuses - same error and all.
I tried to override the home (like you would have to do if you were in a bore when the machine shut down) and the same lag error pops up. The main problem - other than I am not getting any real work done - is that the access to the Z axis servo and the business end of the ballscrew is behind all of the headstock sheetmetal - a real pain in the tukus. You think they would have put an access panel or the like so this one may have to wait until I have more time or money to bring in a pro. Its been a long time but I have nothing but good to report. I had to throw up my arms and get some help getting this thing sorted. I used a guy named Gary Martin of Innovative Solutions - near Pleasanton CA. The trouble was the BMDC board - as Greg L mentioned.
The problem was that the back plane was old and the mother board would pull out of it ever so slightly and blamo the machine would error. Part of the problem is that the BMDC card which attaches to the bottom of the Mother board pulls down on it causing it to lose contact. Had this set up been used like it would have in a PC of its time there would be no problem. However, the Back plane is VERTICAL and all the weight just wants to pull it out.
Bridgeport Ez Path Software Download
I initially tried making some G 10 spacers that went between the cover and the M board. That worked for a few hours and then it worked for 30 seconds. Thats when Gary Martin came in and did some relocation of components, made up some new cables - runs great all the time. We do have a tad of a knock in the spindle but I'll wait to sort that if and when it becomes worse. After a long wait this has turned out to be a great find.