Machsupport Forum
General CNC Chat => Show"N"Tell ( Your Machines) => Topic started by: BluePinnacle on December 26, 2008, 08:03:44 PM
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Height - 7 feet, spindle - 4hp, 415v 3ph, 4200 RPM max expanding sheave drive and automatic airbrake, 3x 10 amp stepper drives, routout stepper driver, microstepping to 32,000 steps per inch. Maximum X,Y speed - 1200 mm/minute and of course Mach3 running on an old 950MHz PC with two parallel cards.
(http://)Note to self - more pictures required! it's quite a big beast. The first two pictures are of the twin-jet travelling coolant system I made up. I'm cutting large parts on two fixtures with a significant variation in Z offsets, and the static feed was either missing the tool or getting spun off the chuck and vapourising all over the floor.
(http://i222.photobucket.com/albums/dd319/CableHoag/Pinnacle1sml.jpg)
(http://i222.photobucket.com/albums/dd319/CableHoag/pinnacle2sml.jpg)
It works a treat, I'd like a lot more pressure but that'll mean making a new coolant pump as the old one gets tired, bless it. 10-15PSI at the nozzle would be good! The clamp is a giant 85mm hose clamp, and the jets are now angled at 45 and 225 degrees to X so that on normal X or Y oriented cuts the coolant flow is approximately the same.
More photos when I remember! :D
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Looks like a nice machine, whats the travels? Whats the taper?
Hood
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Hi. X around 750mm, Y around 400mm, Z around 180mm (set a bit low so i don't knock the coolant pipe off).
More pictures:
(http://i222.photobucket.com/albums/dd319/CableHoag/2sml.jpg)
Front - with TFT display and hardware control panel. The guards are less than wonderful, really they just prevent coolant going absolutely everywhere ( they constrain it to "nearly everywhere :( ")
(http://i222.photobucket.com/albums/dd319/CableHoag/4sml.jpg)
Backside - the white boxes are for contactors, LPT interface boards and other trickery. The RoutOut stepper driver and PC are on the steel framed shelf to the right.
(http://i222.photobucket.com/albums/dd319/CableHoag/3sml.jpg)
Front hardware control panel for locking out the brake and running the pneumatic drawbar. The spindle can also be disabled and safely reenabled from here, all done with relay logic. The whole thing is completely fail-safe.
(http://i222.photobucket.com/albums/dd319/CableHoag/1sml.jpg)
Current 2-jig setup making WG5Q flanges for coupling waveguide sections. The twin fixtures enable angles flanges to be made by tilting the first fixture, then finishing off on the second jig.
(http://i222.photobucket.com/albums/dd319/CableHoag/5sml.jpg)
My lovely twin-jet coolant feed doing its thing. it's such an improvement over the old "gooseneck" feed!
(http://i222.photobucket.com/albums/dd319/CableHoag/6sml.jpg)
Product! A complete WG5Q flange from 15mm thick 6082 alloy. Complete cycle time is 20 minutes dead, no tool changes.
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Looks like it makes some beautiful chips, there.
A very productive looking setup and I'm envious - :)
Dave
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bluepinnacle,
Looks like my Yamazen Mill.
Ed
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bluepinnacle,
Looks like my Yamazen Mill.
Ed
I also have a Yamazen that I converted and they are very similar. Even the limit switches are the same, but the Yamazen came with servos.
Vince
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N4NV,
My Yamazen has dc 4 brush Baldor servos. Good rigid machine. Got mine really cheap. :D
Was going to be scrapped. works great (now)
Ed
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Hi. Could be that the Yamazen mill is based on the same castings, and the electrical & control systems fitted by different companies. It's fairly common with machine tools, I believe. Does the Yamezen have plastic slide surfaces?
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My Yamzen came with an Allen Bradley control with Servo Dynamics drives and 4 brush servo motors. Mine did not have plastic (Teflon) on the sliding surfaces. I wrote up the Mach conversion here:
http://www.cnczone.com/forums/showthread.php?t=31601
Vince
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that's a VERY sexy conversion and I'm in considerable envy of the travel speed. I must see if I can snag a faster computer for my rig, mine seems rather limited in terms of the speed of the pulse train it can generate. Well done, great job there :)
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N4NV,
On your link you stated your model no. as "5VBK"
mine is "5BVK". 1989. also was Allan Bradley 8400 Bandit control.
I have mine totaly enclosed. Check out the Yamazen folder on my photobucket link.
Nice machines.
Ed
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that's a VERY sexy conversion and I'm in considerable envy of the travel speed. I must see if I can snag a faster computer for my rig, mine seems rather limited in terms of the speed of the pulse train it can generate. Well done, great job there :)
I've been told it would go faster is I installed a SmoothStepper card.
Vince
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look like very nice mills, definitely a leap up from a Bridgeport series 1. What is the taper on them?
Hood
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look like very nice mills, definitely a leap up from a Bridgeport series 1. What is the taper on them?
Hood
Mine is an NMTB40.
Vince
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mine too. NMBT40 W/ Power draw bar
Ed
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Looks to be very similar in size to the Beaver NC5 mill I am doing at the moment, same taper and travels are just slightly smaller than the NC5. I am really looking forward to getting it running as the Bridgeports tiny travels and lack of rigidity are a PITA.
Hood
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Hood,
Yes , Bridgeport has a good name, but rigidity not. Those tilting heads are easily knocked out of wack.
Poor design with those long studs holding the head position. Only good for light duty.
When's that Beaver going to be done? I want to see some Beaver pictures. ;D
Ed
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Hood,
Yes , Bridgeport has a good name, but rigidity not. Those tilting heads are easily knocked out of wack.
Poor design with those long studs holding the head position. Only good for light duty.
The Bridgeport I have is a rigid ram type so no tilting head but it is only very slightly more rigid that the vee ram Bridgeports and the puny 3 1/8 quill doesnt help much.
When's that Beaver going to be done? I want to see some Beaver pictures. ;D
Ed
LOL I am sure you are much too old for that ;D
Hood
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H :D :D D,
Neeeever to old to look, but thats all I can do.
Britt would kill me. :D
Ed
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LOL
I should really start a thread with info on the NC5 retrofit I suppose.
Notice I missed out the actual name of the mill and just used the model number, cant have you old guys getting heart attacks ;D
Hood
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Hood,
Yes, a Beaver thread would be great. with lots of pics.
BTW, Yes, I'm old, but I'm not dead. :D
Ed
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;D
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mine too. NMBT40 W/ Power draw bar
Ed
A little off topic, but is there a way to get a cat 40 or bt 40 collet to fit a nmtb 40 spindle?
Vince
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Not sure what NMTB40 is Vince, dont think we have such a beast here, or maybe we just call it something different. My mill can accept any 40 taper tooling as far as I know, the two things I would have to do is for CAT/DIN is either remove one of the dogs or mill a bit off to make it fit in the shallow notch on the holder. The other thing is I needed to make longer pullstuds as the Int40 taper has an extended shaft. Below is a pic of the original pullstud (right) the extended one I made (left) and also one I made for a friends mill.
Hood
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An NMTB40 does not have a pull stud. The spindle has a draw bar like a bridgeport j head. The draw bar screws into the top of the collet. If all the 40 tapers are the same then I guess I could make a collar that screwed into the CAT 40 and then the draw bar could screw into that. I was wondering if someone had ever done that. NMTB tooling is very scarce but CAT 40 and BT 40 are much more readily available. I'm in York right now for the Mach seminar. When I get back I will post a picture of a NMTB 40 collet.
Vince
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N4NV,
NMTB 40 holders do not have the groove in the flange which is used for a tool changer.
it is just an older style for use with a 5/8-11 draw bar
all 40 tapers are the same. you may need a longer drawbars.
Check out the specs on this site.
http://www.tools-n-gizmos.com/specs/Tapers.html#CAT
Ed
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Ah ok thats just like what I know as Int40 except most of mine have M16 threads although I do have some with 5/8".
I have been buying DIN69871/A which is the same as CAT but with a metric thread as I plan to make a toolchanger for the mill at some point in time.
Hood
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Thanks for the information Ed. i think I will try to make an adapter collar what will fit into a Cat 40 so I do not have to change my draw bar. It looks like a good project to test out threading on my lathe.
Vince
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Also,
NMTB 40 HOLDERS are still made. Bison of Poland makes a good quality holder, and the price ain't bad.
Some 40 taper machines spindles are threaded and use a big nut to hold the holder in, and some must have the holder flange machined narrower to work. a Spanner wrench is required to tighten the nut. BUT, eliminating the nut , you can use any 40 taper holder , if the spindle has a hole through for a draw bar. (some machines don't ) >:(
Ed
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More on 40 taper.
CNC Milling machines will nearly always use SK (or ISO), CAT, BT or HSK tooling. SK tooling is the most common in Europe, while CAT tooling, sometimes called V-Flange Tooling, is the oldest variation and is probably still the most common in the USA. CAT tooling was invented by Caterpillar Inc. of Peoria, Illinois in order to standardize the tooling used on their machinery. CAT tooling comes in a range of sizes designated as CAT-30, CAT-40, CAT-50, etc. The number refers to the Association for Manufacturing Technology (formerly the National Machine Tool Builders Association (NMTB)) Taper size of the tool.
CAT-40 Toolholder
An improvement on CAT Tooling is BT Tooling, which looks very similar and can easily be confused with CAT tooling. Like CAT Tooling, BT Tooling comes in a range of sizes and uses the same NMTB body taper. However, BT tooling is symmetrical about the spindle axis, which CAT tooling is not. This gives BT tooling greater stability and balance at high speeds. One other subtle difference between these two toolholders is the thread used to hold the pull stud. CAT Tooling is all Imperial thread and BT Tooling is all Metric thread. Note that this affects the pull stud only, it does not affect the tool that they can hold, both types of tooling are sold to accept both Imperial and metric sized tools.
SK and HSK tooling, sometimes called "Hollow Shank Tooling", is much more common in Europe where it was invented than it is in the United States. It is claimed that HSK tooling is even better than BT Tooling at high speeds. The holding mechanism for HSK tooling is placed within the (hollow) body of the tool and, as spindle speed increases, it expands, gripping the tool more tightly with increasing spindle speed. There is no pull stud with this type of tooling.
The situation is quite different for manual milling machines — there is little standardization. Newer and larger manual machines usually use NMTB tooling. This tooling is somewhat similar to CAT tooling but requires a drawbar within the milling machine. Furthermore, there are a number of variations with NMTB tooling that make interchangeability troublesome.
Boring head on Morse Taper Shank
Two other tool holding systems for manual machines are worthy of note: They are the R8 collet and the Morse Taper #2 collet. Bridgeport Machines of Bridgeport, Connecticut so dominated the milling machine market for such a long time that their machine "The Bridgeport" is virtually synonymous with "Manual milling machine." The bulk of the machines that Bridgeport made from about 1965 onward used an R8 collet system. Prior to that, the bulk of the machines used a Morse Taper #2 collet system.
AND , Some used a #9 or #10 brown and sharpe taper.
Ed
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Vince you can get a NMTB40 threaded adaptor that screws into cat and BT 40 holders. It looks just like the NMTB end but has an M16 stud on one end to screw into the BT/Cat holder where the pull stud would normally be.
I'm in the UK but i'm sure you could get one in the US..
John.