is there anyway to speed up the spindle speed on the bridgemill? and is it adviceable?

i guess my best bet would be to change out the stock motor to a 2hp with 3450 rmp verse the stock motor being 1hp with 1750 rpm. that should give me more speed then i need.

this a 3phase motor? if you get a vfd you can push it some more.

i'm running single phase. my setup is in a house and getting 3 phase is almost in possible.

maybe you could put a dc motor on it.

http://www.surpluscenter.com/item.asp?UID=2005010208473670&item=10-1907&catname=electric


http://www.surpluscenter.com/item.asp?UID=2005010208473670&item=11-2434&catname=electric

that would be nice. but it would probably be cheaper to go 110/220v the motor i was looking at was arround $90 for an unsealed motor with Ballbearings and 168 for a sealed motor w/ bb

adjustable speed controller would make it nice :)

heres a guy with a nice setup for $60.

http://www.cnczone.com/forums/showthread.php?t=7099

i'm running single phase. my setup is in a house and getting 3 phase is almost in possible.


Do you have 220 1phase? if so most vfd input 1phase power and put out 3phase. then you can get any 3 phase motor on surpluscenter or surplus store around you. some vfd will even input 120 for lower hp but they cost alot unless you find a sale :P
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=42895&item=3851689826&rd=1&ssPageName=WD1V

goodluck on the setup.

Sendkeys has the right idea. Its also good to know that most VFD's are derated when running off single phase. That means, you'd need a 3hp rated VFD to run a 2hp 3phase motor.

i thought of that but the cost of it is the issues on that.

to an who have interest
I converted my mill to VFD

from www.dealerselectric.com I got
fm100-100-202-n1
2hp 1800rmp G585 motor (240/460 in(SF 1.15)

other things needed
new Pulley mine 5.3" / new 20amp circuit / service dissconnect 30a with 15a fuses

at least #12 form the service disconnect, at least #14 from controller to motor (these are only as a reference--- see an electrictican

sheiled wire form the controller to your old pushbuttons

the biggest killers of VFD's are oil and dust build up

the FM100 does not derate the motor

Henry at dealers can help with base settings and help you pick out the right motor and controller combo

Steve and Bill from teco are VERY helpfull

after a bunch of settings I can now put in the RPM I want and the spindle spins to the correct RPM about 200-3250

It will go higher but shoptask says 4k max

software for this unit comes with the rs-232 kit (dos)

there is a 7200 model that had windows real time sotware rS485 only

I opted to the remote panel kit (3 meter) this lets you relocate the op panel from the controller

be ready to drill a couple of new holes for the motor
I put the motor in about the same place
I ran 1 belt from motor to Idler to drive pulley

the shoptaks Is Very quite with the 3 Phase motor,
running 3250 is still more quite the the stock motor setup at any speed

next will be a external emergency stop

hope this will be of interest to some

prices motor and controller $425.00 remote kit $80.00, steel pulley $50.00


TJ :wee:

Can you reverse the motor for tapping like real 3 phase ?

yes forward and reverse, the fm100 has transister breaking, I'm gussing thata external breaking resister would be needed to shorten the location #2 (decal time) I can get down to about 3 sec. with the build in transister.
TJ

I have a freak drive on my Shoptask and use it to engrave all the time at around 6k rpm. I also tap with it. My drive is a 1hp unit from Automation Direct. If I keep the rpms below 90 I can flip the reverse switch and back out of a hole just like on a B'port. I am in the process of modifying the tapping cycle in Mach3 to let me do semi-rigid tapping.
William

Them drives look like a really good way to go.If i burn out my dc treadmill motor I would go that route next time. :D I have around $40.00 into the dc drive and motor 2.25 hp 260 volts 8000 rpm and it gets hot (flame2)

Mitch

Wish me luck. I'm ordering some of the same unit's tj did from dealers. My biggest concern with the unit is getting all the addtional power to the spindle. Right now I get sliping with a single belt. Would it be wise to convert to a idler / spring tension system with a dual groove pulleys?

I'm very excited for some more power. I feel the system is lacking a little bit. I've wrecked more than a few bits because of not enough power or slipping on the belts.

Here is what I'm proposing, and need an opinion or two on the validity of such:

Replacing mill motor with 2 hp, 1800rpm w/ vfd. Using a 7.118" Gates sprocket on the shaft, pulling the pulley of the spindle and replacing it with a 3.509" Gates sprocket. (this would of course have to be machined to fit the spindle column) Running a smooth idler in the center that pushes on the belt for tension. The cost of the sprockets are around $300.00 retail and belt is $35.00. You would probably NEVER have to replace the belt, and would never have a belt slipping issue. Can this be done?

Max speed would be about 3600 rpm.

to an who have interest
I converted my mill to VFD

from www.dealerselectric.com I got
fm100-100-202-n1
2hp 1800rmp G585 motor (240/460 in(SF 1.15)

other things needed
new Pulley mine 5.3" / new 20amp circuit / service dissconnect 30a with 15a fuses

at least #12 form the service disconnect, at least #14 from controller to motor (these are only as a reference--- see an electrictican

sheiled wire form the controller to your old pushbuttons

the biggest killers of VFD's are oil and dust build up

the FM100 does not derate the motor

Henry at dealers can help with base settings and help you pick out the right motor and controller combo

Steve and Bill from teco are VERY helpfull

after a bunch of settings I can now put in the RPM I want and the spindle spins to the correct RPM about 200-3250

It will go higher but shoptask says 4k max

software for this unit comes with the rs-232 kit (dos)

there is a 7200 model that had windows real time sotware rS485 only

I opted to the remote panel kit (3 meter) this lets you relocate the op panel from the controller

be ready to drill a couple of new holes for the motor
I put the motor in about the same place
I ran 1 belt from motor to Idler to drive pulley

the shoptaks Is Very quite with the 3 Phase motor,
running 3250 is still more quite the the stock motor setup at any speed

next will be a external emergency stop

hope this will be of interest to some

prices motor and controller $425.00 remote kit $80.00, steel pulley $50.00


TJ :wee:

You've Got to post pictures somewhere!!! Please?

Bloy

I am in the process of upgrading my older quadra lift as we speak. I have a servo on my quadralift and use it as my z for my cnc system. It currently runs about at 50ish ipm with about 14" of travel. I use the quill for power tapping and various drilling where I dont feel like editing my program. I am putting a ballscrew on the lift to reduce torque, as my servo faults out if I run it faster (I have the overload amperage set almost to zero btw.) When I install the ballscrew I am moving the motor off the millhead. I am going to mount it to the top of the quadralift and used a splined shaft to get power to the spindle. I will have two belt settings and have a cad model of an air operated belt changer. The two belt settings will give 3k and about 5k factoring in cutting load. Removing the mass of the motor combined with the more efficient ballscrew should get rapids in the 100-130 ipm range, dont really need to run it faster.
William
William

This is a 3D image of what I'm doing to my shoptask mill and lathe setups. VFD control. 1.3:1 ratio. 1725 RPM on the motor = 1-1950 on both mill and lathe. Of course you can overspeed the motors and get more out of it, but might reduce the bearing life.

So what do you think?

You've Got to post pictures somewhere!!! Please?

Bloy:idea:
I decided to flip the motor, it is hidden behind the 6061, now in a single belt all the clutter removed, just a belt guard at some time in the near future, TJ