Re: glass scales for atlas 12" lathe #3986
??? ?? ? Accuracy +/- .002” per 6"
or .02 mm per 150 mm, ?+/- .004” per 12" or
300 mm and?+/- .013” per 36" or 900 mm?
? don't seem to accurate to me
??? ??? animal
On 2/14/2019 5:19 PM, Eric Chilton via
Groups.Io wrote:
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i have converted
the measurements over before i posted this thread .....the
seller offers 100mm to like 1000mm .im thinking a 45 inch long
one for the bed its the easy one but at the carriage the scale
would have to sit on the two horns i guess that's what you would
call them .....and the scales with the sliding part that does
the measuring is 53mm or just a little over 2" tall .....that
part of the carriage is roughly that thick......these lathes
weren't designed for new technology lol ......i could geta short
scale for the carriage and put it in between but i just wanna
make sure im gonna have enough travel ......in the future im
gonna machine my mla tee cross slide and have two tool post on
it ........looking at cdco scales for a 12x36 lathe? they sell
13 inch and 45 inch in there kit ...ive looked at the igauging
ones and they look nice and usable .....dto they plug into the
wall ac ? they would probably be easier to mount ...but do you
get bolt pattern and all the fancy stuff with them as you do
with the regular type of dro .....ive welded for the last 25
years and my eyes are about shot ......i need to upgrade bad
.................eric.....
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Re: glass scales for atlas 12" lathe #3986
i have converted the measurements over before i posted this thread .....the seller offers 100mm to like 1000mm .im thinking a 45 inch long one for the bed its the easy one but at the carriage the scale would have to sit on the two horns i guess that's what you would call them .....and the scales with the sliding part that does the measuring is 53mm or just a little over 2" tall .....that part of the carriage is roughly that thick......these lathes weren't designed for new technology lol ......i could geta short scale for the carriage and put it in between but i just wanna make sure im gonna have enough travel ......in the future im gonna machine my mla tee cross slide and have two tool post on it ........looking at cdco scales for a 12x36 lathe? they sell 13 inch and 45 inch in there kit ...ive looked at the igauging ones and they look nice and usable .....dto they plug into the wall ac ? they would probably be easier to mount ...but do you get bolt pattern and all the fancy stuff with them as you do with the regular type of dro .....ive welded for the last 25 years and my eyes are about shot ......i need to upgrade bad .................eric.....
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Re: glass scales for atlas 12" lathe #3986
Everybody recommends magnetic scales because they can be cut to size. They come in aluminum and stainless steel. Steel is more expensive.
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I've thought about a DRO on my 12x36 and on my South Bend 9A. Where I really want one is on my South Bend 16 but there is one small, maybe not so small issue.? The bed length is 144"? with 120" of carriage travel.? I imagine
a glass scale for that lathe is going to cost out the wazoo.
James
On Thu, Feb 14, 2019 at 6:45 PM Dave Matticks < dpm100@...> wrote:
X axis is cross slide, Z is carriage.?
Atlas cross slides don't give much room for a side mounted scale.?
Dave?
Sent from my T-Mobile 4G LTE Device
-------- Original message --------
Date: 2/14/19 16:41 (GMT-06:00)
Subject: Re: [atlas-craftsman IO] glass scales for atlas 12" lathe #3986
??? ??? ??? google " 50.5 inches to mm" there's a cazillion conversions online
??? ??? animal
On 2/14/2019 2:27 PM, Eric Chilton via Groups.Io wrote:
hi im in a position where i can purchase a 2 axes dro for my lathe..........its on ebay for less than 200.00.....the person selling it has good feedback so im not worried about that......i just need to know what length of scales i need
for the bed and the cross slide ......they are listed in mm and im not sure how long i should get ......i measured the cross slide its 10" long and the bed roughly is 50 1/2 ...i know i wouldn't need them all the way end to end....im also considering if i
want to put a taper attachment on my lathe if that would cause a problem ? the x axes im assuming is the travel down the bed length ways and the cross slide being x .....on the cross slide whether to mount it to the front or to the rear of the cross slide
.....any help with this would be much appreciated .............tia ............Eric
|
Re: glass scales for atlas 12" lathe #3986
I've thought about a DRO on my 12x36 and on my South Bend 9A. Where I really want one is on my South Bend 16 but there is one small, maybe not so small issue.? The bed length is 144"? with 120" of carriage travel.? I imagine a glass scale for that lathe is going to cost out the wazoo.
James
On Thu, Feb 14, 2019 at 6:45 PM Dave Matticks < dpm100@...> wrote: X axis is cross slide, Z is carriage.? Atlas cross slides don't give much room for a side mounted scale.? Dave?
Sent from my T-Mobile 4G LTE Device
-------- Original message -------- Date: 2/14/19 16:41 (GMT-06:00) Subject: Re: [atlas-craftsman IO] glass scales for atlas 12" lathe #3986
??? ??? ??? google " 50.5 inches to mm" there's a cazillion
conversions online
??? ??? animal
On 2/14/2019 2:27 PM, Eric Chilton via
Groups.Io wrote:
hi im in a position where i can purchase a 2 axes dro for my
lathe..........its on ebay for less than 200.00.....the person
selling it has good feedback so im not worried about that......i
just need to know what length of scales i need for the bed and the
cross slide ......they are listed in mm and im not sure how long i
should get ......i measured the cross slide its 10" long and the
bed roughly is 50 1/2 ...i know i wouldn't need them all the way
end to end....im also considering if i want to put a taper
attachment on my lathe if that would cause a problem ? the x axes
im assuming is the travel down the bed length ways and the cross
slide being x .....on the cross slide whether to mount it to the
front or to the rear of the cross slide .....any help with this
would be much appreciated .............tia ............Eric
|
Re: glass scales for atlas 12" lathe #3986
25.4 mm is an exact conversion to 1 inch. .03937" is really close to one millimeter unless you go very long! Dave?
Sent from my T-Mobile 4G LTE Device
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-------- Original message -------- From: mike allen <animal@...> Date: 2/14/19 16:41 (GMT-06:00) Subject: Re: [atlas-craftsman IO] glass scales for atlas 12" lathe #3986
??? ??? ??? google " 50.5 inches to mm" there's a cazillion
conversions online
??? ??? animal
On 2/14/2019 2:27 PM, Eric Chilton via
Groups.Io wrote:
hi im in a position where i can purchase a 2 axes dro for my
lathe..........its on ebay for less than 200.00.....the person
selling it has good feedback so im not worried about that......i
just need to know what length of scales i need for the bed and the
cross slide ......they are listed in mm and im not sure how long i
should get ......i measured the cross slide its 10" long and the
bed roughly is 50 1/2 ...i know i wouldn't need them all the way
end to end....im also considering if i want to put a taper
attachment on my lathe if that would cause a problem ? the x axes
im assuming is the travel down the bed length ways and the cross
slide being x .....on the cross slide whether to mount it to the
front or to the rear of the cross slide .....any help with this
would be much appreciated .............tia ............Eric
|
Re: glass scales for atlas 12" lathe #3986
X axis is cross slide, Z is carriage.? Atlas cross slides don't give much room for a side mounted scale.? Dave?
Sent from my T-Mobile 4G LTE Device
toggle quoted message
Show quoted text
-------- Original message -------- From: mike allen <animal@...> Date: 2/14/19 16:41 (GMT-06:00) Subject: Re: [atlas-craftsman IO] glass scales for atlas 12" lathe #3986
??? ??? ??? google " 50.5 inches to mm" there's a cazillion
conversions online
??? ??? animal
On 2/14/2019 2:27 PM, Eric Chilton via
Groups.Io wrote:
hi im in a position where i can purchase a 2 axes dro for my
lathe..........its on ebay for less than 200.00.....the person
selling it has good feedback so im not worried about that......i
just need to know what length of scales i need for the bed and the
cross slide ......they are listed in mm and im not sure how long i
should get ......i measured the cross slide its 10" long and the
bed roughly is 50 1/2 ...i know i wouldn't need them all the way
end to end....im also considering if i want to put a taper
attachment on my lathe if that would cause a problem ? the x axes
im assuming is the travel down the bed length ways and the cross
slide being x .....on the cross slide whether to mount it to the
front or to the rear of the cross slide .....any help with this
would be much appreciated .............tia ............Eric
|
Re: glass scales for atlas 12" lathe #3986
I turn these , and dro’s come in real handy.
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Re: glass scales for atlas 12" lathe #3986
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Re: glass scales for atlas 12" lathe #3986
I have a 12” Craftsman Commercial. I have IGaging dro , used a 12” and a 36” on mine. I have the Aluminum rails that are actually 6” longer than the given size to compensate for the 3” pickup. 12” is 18”, 36” is 42” . Nice thing with the Alum. Is you cut to fit. On my 3rd set of these ( 2 lathes and 1 mini mill ) and have no problems. Very accurate and work well. Bought on EBay Taylor Tools in Columbia,Mo.
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Over 600 Metalworking Accessories Up to 65% Off!
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Re: glass scales for atlas 12" lathe #3986
??? ??? ??? google " 50.5 inches to mm" there's a cazillion
conversions online
??? ??? animal
On 2/14/2019 2:27 PM, Eric Chilton via
Groups.Io wrote:
toggle quoted message
Show quoted text
hi im in a position where i can purchase a 2 axes dro for my
lathe..........its on ebay for less than 200.00.....the person
selling it has good feedback so im not worried about that......i
just need to know what length of scales i need for the bed and the
cross slide ......they are listed in mm and im not sure how long i
should get ......i measured the cross slide its 10" long and the
bed roughly is 50 1/2 ...i know i wouldn't need them all the way
end to end....im also considering if i want to put a taper
attachment on my lathe if that would cause a problem ? the x axes
im assuming is the travel down the bed length ways and the cross
slide being x .....on the cross slide whether to mount it to the
front or to the rear of the cross slide .....any help with this
would be much appreciated .............tia ............Eric
|
Attached are photos for the tachometer install on my Atlas 12” underdrive model 3996 lathe. I have a similar install on my 10F Atlas lathe. Both lathes are equipped with a new VFD rated three phase motor and Teco VFD for variable speed capability and to provide the three phase motor power from 120 volt single phase input power. The tachometer is a “Tachulator” unit you can purchase from www.littlemachineshop.com for $110 plus shipping. The tachulator uses a photoelectric sensor that must be approx 1/10” away from the item being sensed. I use a 1/4” square piece of reflective tape attached to the LH spindle collar as shown in the photo. The VFD in the first photo reads 31.2 Hz and the tachulator reads 684 rpm spindle speed. Changing the spindle speed is as easy as turning the knob on the front of the VFD.
An alternative would be to use a hand held photoelectric tachometer with a piece of reflective tape attached to the body of your chuck to take rpm readings.
Steve Haskell
Troy, MI
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glass scales for atlas 12" lathe #3986
hi im in a position where i can purchase a 2 axes dro for my lathe..........its on ebay for less than 200.00.....the person selling it has good feedback so im not worried about that......i just need to know what length of scales i need for the bed and the cross slide ......they are listed in mm and im not sure how long i should get ......i measured the cross slide its 10" long and the bed roughly is 50 1/2 ...i know i wouldn't need them all the way end to end....im also considering if i want to put a taper attachment on my lathe if that would cause a problem ? the x axes im assuming is the travel down the bed length ways and the cross slide being x .....on the cross slide whether to mount it to the front or to the rear of the cross slide .....any help with this would be much appreciated .............tia ............Eric
|
Re: Tachometer for 12" Atlas
And your machines are much happier, too. ?The Atlas was designed for less than 1 HP, and there are lots of parts - the back gears, the bull gear lock pin, etc. - that could easily be broken by too much power.
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-----Original Message-----
From: Andrei <calciu1@...>
To: [email protected] < [email protected]>
Sent: Thu, Feb 14, 2019 4:50 pm
Subject: Re: [atlas-craftsman IO] Tachometer for 12" Atlas
He mentioned 3hp. I am happy with 1hp for my machines
Why 3hp? Besides that is what treadmill motors are.
I doubt these lathes and mills need much more hp than what they were designed?for.
One might be throwing money at things that don't really need it.
I will also do my 12x36 Craftsman lathe.
Ralph
On Thu, Feb 14, 2019 at 3:26 PM Andrei < calciu1@...> wrote:
do you mind doing a show and tell on the 3Hp motor conversion? I have been thinking of getting a DC motor for my lathe and for the horizontal milling machine i have.?
Just had a look at the ELS link and saw this >>
Spindle Optical Sensor.
Would that not do what you need if you go with the ELS?
If you are going that route, ELS, why not also upgrade to a larger DC motor? I have converted my Bridgeport mill and my craftsman 12" lathe to 3 HP DC motors using ether LEESON & Pacific scientific motors from treadmills. These are full on commercial treadmill
motors not the usual plastic junk treadmill motors.
For speed control I am using KB electronics units. These can be wired into a control unit that can output PWM style signal and thus might be controlled by a ELS style control unit.
I have had my lathe re-powered with the 3 hp pacific scientific motor and KB controller for about 6 months and it is the single best mod you can ever do to your atlas/craftsman lathe. I simply love love love it.
If I were to do that now though, I would look into a 3 phase motor and VFD control instead of the DC. I think if you could score a good used 3 phase motor and use a new VFD it would be affordable.
~
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Re: Tachometer for 12" Atlas
Man a lot of members here like gadgets if you want to control the speed on your lathe i would use a in line ( power line ) control.? ? I think it may be cheaper and easy to install?
GP
On Thursday, February 14, 2019, 4:51:01 PM EST, Andrei <calciu1@...> wrote:
He mentioned 3hp. I am happy with 1hp for my machines
Why 3hp? Besides that is what treadmill motors are.
I doubt these lathes and mills need much more hp than what they were designed?for.
One might be throwing money at things that don't really need it.
Of course I upgrade both my mill and my 14" Delta bandsaw with a .
I will also do my 12x36 Craftsman lathe.
Ralph
On Thu, Feb 14, 2019 at 3:26 PM Andrei < calciu1@...> wrote:
do you mind doing a show and tell on the 3Hp motor conversion? I have been thinking of getting a DC motor for my lathe and for the horizontal milling machine i have.?
Just had a look at the ELS link and saw this >>
Would that not do what you need if you go with the ELS?
If you are going that route, ELS, why not also upgrade to a larger DC motor? I have converted my Bridgeport mill and my craftsman 12" lathe to 3 HP DC motors using ether LEESON & Pacific scientific motors from treadmills. These are full on commercial treadmill
motors not the usual plastic junk treadmill motors.
For speed control I am using KB electronics units. These can be wired into a control unit that can output PWM style signal and thus might be controlled by a ELS style control unit.
I have had my lathe re-powered with the 3 hp pacific scientific motor and KB controller for about 6 months and it is the single best mod you can ever do to your atlas/craftsman lathe. I simply love love love it.
If I were to do that now though, I would look into a 3 phase motor and VFD control instead of the DC. I think if you could score a good used 3 phase motor and use a new VFD it would be affordable.
~
|
Re: Tachometer for 12" Atlas
If you do not need a continuous speed reading, one solution would one of those relatively inexpensive, hand held, laser units with digital readout.? I believe the counter within is crystal controlled, so the accuracy should be in the 0.01% region.? These meters come with a supply of reflective tape.? You just place a narrow strip on a chuck or the like and point the laser beam while the machine is running.? An advantage is that you can use it on any number of machines and for such things as setting the idle speed of your automobile engine.?
I bought mine to measure the chuck speed of a micro drill press I was making and wanted to be able to read up to 25,000 RPM.? It worked fine.? This was about ten years ago.? I do not know what these units currently cost, but I think I paid about $28.
Bruce
|
Re: Tachometer for 12" Atlas
He mentioned 3hp. I am happy with 1hp for my machines
toggle quoted message
Show quoted text
Why 3hp? Besides that is what treadmill motors are.
I doubt these lathes and mills need much more hp than what they were designed?for.
One might be throwing money at things that don't really need it.
Of course I upgrade both my mill and my 14" Delta bandsaw with a .
I will also do my 12x36 Craftsman lathe.
Ralph
On Thu, Feb 14, 2019 at 3:26 PM Andrei < calciu1@...> wrote:
do you mind doing a show and tell on the 3Hp motor conversion? I have been thinking of getting a DC motor for my lathe and for the horizontal milling machine i have.?
Just had a look at the ELS link and saw this >>
Would that not do what you need if you go with the ELS?
If you are going that route, ELS, why not also upgrade to a larger DC motor? I have converted my Bridgeport mill and my craftsman 12" lathe to 3 HP DC motors using ether LEESON & Pacific scientific motors from treadmills. These are full on commercial treadmill
motors not the usual plastic junk treadmill motors.
For speed control I am using KB electronics units. These can be wired into a control unit that can output PWM style signal and thus might be controlled by a ELS style control unit.
I have had my lathe re-powered with the 3 hp pacific scientific motor and KB controller for about 6 months and it is the single best mod you can ever do to your atlas/craftsman lathe. I simply love love love it.
If I were to do that now though, I would look into a 3 phase motor and VFD control instead of the DC. I think if you could score a good used 3 phase motor and use a new VFD it would be affordable.
~
|
Re: Tachometer for 12" Atlas
Why 3hp? Besides that is what treadmill motors are.
I doubt these lathes and mills need much more hp than what they were designed?for.
One might be throwing money at things that don't really need it.
Of course I upgrade both my mill and my 14" Delta bandsaw with a .
I will also do my 12x36 Craftsman lathe.
Ralph
On Thu, Feb 14, 2019 at 3:26 PM Andrei < calciu1@...> wrote:
do you mind doing a show and tell on the 3Hp motor conversion? I have been thinking of getting a DC motor for my lathe and for the horizontal milling machine i have.?
Just had a look at the ELS link and saw this >>
Would that not do what you need if you go with the ELS?
If you are going that route, ELS, why not also upgrade to a larger DC motor? I have converted my Bridgeport mill and my craftsman 12" lathe to 3 HP DC motors using ether LEESON & Pacific scientific motors from treadmills. These are full on commercial treadmill
motors not the usual plastic junk treadmill motors.
For speed control I am using KB electronics units. These can be wired into a control unit that can output PWM style signal and thus might be controlled by a ELS style control unit.
I have had my lathe re-powered with the 3 hp pacific scientific motor and KB controller for about 6 months and it is the single best mod you can ever do to your atlas/craftsman lathe. I simply love love love it.
If I were to do that now though, I would look into a 3 phase motor and VFD control instead of the DC. I think if you could score a good used 3 phase motor and use a new VFD it would be affordable.
~
|
Re: Tachometer for 12" Atlas
do you mind doing a show and tell on the 3Hp motor conversion? I have been thinking of getting a DC motor for my lathe and for the horizontal milling machine i have.?
toggle quoted message
Show quoted text
Just had a look at the ELS link and saw this >>
Would that not do what you need if you go with the ELS?
If you are going that route, ELS, why not also upgrade to a larger DC motor? I have converted my Bridgeport mill and my craftsman 12" lathe to 3 HP DC motors using ether LEESON & Pacific scientific motors from treadmills. These are full on commercial treadmill
motors not the usual plastic junk treadmill motors.
For speed control I am using KB electronics units. These can be wired into a control unit that can output PWM style signal and thus might be controlled by a ELS style control unit.
I have had my lathe re-powered with the 3 hp pacific scientific motor and KB controller for about 6 months and it is the single best mod you can ever do to your atlas/craftsman lathe. I simply love love love it.
If I were to do that now though, I would look into a 3 phase motor and VFD control instead of the DC. I think if you could score a good used 3 phase motor and use a new VFD it would be affordable.
~
|
Re: Tachometer for 12" Atlas
Just had a look at the ELS link and saw this >>
Would that not do what you need if you go with the ELS?
If you are going that route, ELS, why not also upgrade to a larger DC motor? I have converted my Bridgeport mill and my craftsman 12" lathe to 3 HP DC motors using ether LEESON & Pacific scientific motors from treadmills. These are full on commercial treadmill motors not the usual plastic junk treadmill motors.
For speed control I am using KB electronics units. These can be wired into a control unit that can output PWM style signal and thus might be controlled by a ELS style control unit.
I have had my lathe re-powered with the 3 hp pacific scientific motor and KB controller for about 6 months and it is the single best mod you can ever do to your atlas/craftsman lathe. I simply love love love it.
If I were to do that now though, I would look into a 3 phase motor and VFD control instead of the DC. I think if you could score a good used 3 phase motor and use a new VFD it would be affordable.
~
|
Steven H
ebrucehunter
Robert