Re: [CAD_CAM_EDM_DRO] Re: Taig mill (ballscrews)

Better an email since I can't use the phone

Thank's

Smoke
-----Original Message-----
From: Mike <mnels@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Monday, November 13, 2000 1:40 PM
Subject: [CAD_CAM_EDM_DRO] Re: Taig mill (ballscrews)

>At 01:31 PM 11/13/2000 -0700, you wrote:
>>Any idea how well these would work on a bigger (Bridgeport size) mill?
>
>If you look at the specs on BSA's website, the torque ratings are not all
>that high. The nuts themselves are made out of a self lubricating plastic
>and I'm not sure they could handle the stresses on a full sized mill, but a
>phone call to BSA would probably be a good idea.
>
>
>
>>Smoke
>>-----Original Message-----
>>From: Mike <mnels@...>
>>To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
>>Date: Monday, November 13, 2000 1:17 PM
>>Subject: [CAD_CAM_EDM_DRO] Re: Taig mill (ballscrews)
>>
>>
>> > >When you saw this mill did you look at the amount of space avalable
>> > >for ball screws?
>> >
>> >For what it's worth, the BSA zero backlash screws used by MaxNC seem to
>> >work very well for mini-mill CNC. Mine don't have any backlash that I

can

>> >yet detect. They're supposed to be self compensating for the life of

the

>> >assembly. The nuts on the 1/4" MaxNC screws are 0.64" in diameter and
>> >1.18" long. The drive friction is similar to a standard acme nut. The
>> >screws appear to be the "XC" series made by BSA at:
>> >
>> > http://www.ballscrews.com/html/2/2_index.html
>> >
>> >While the Taig uses 3/8" screws, the BSA XC screws might be an easier

(and

>> >cheaper) retrofit than ball screws.
>> >
>> >Also FYI... I looked at the Taig mill and liked the beefier 3/8" screws
>> >and spindle motor assembly. But their CNC motor mounts are awkward and,
>> >despite their claims, I'm not sure their design is any more rigid than

the

>> >MaxNC 10. The MaxNC was designed as a CNC mill from the outset while

the

>> >Taig is clearly a retrofit. The MaxNC 15 is very likely more rigid than
>> >the Taig and offers much greater throat, travel and table size (but it's
>> >also more expensive). The big downside to MaxNC is their slow and phase
>> >based CNC hardware and software but you can get the mills without the
>> >motors, controller or software if you want.
>> >
>> >
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>> >
>> >
>> >
>>
>>
>>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
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>>Addresses:
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>>bill,
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>>
>>
>
>
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

discussion of shop built systems, for CAD, CAM, EDM, and DRO.

>
>Addresses:
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>bill,
>List Manager
>
>
>