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Uisng A Chucking Reamer

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Bob La Londe

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Jan 17, 2014, 1:53:22 PM1/17/14
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After calculating the speed and feed for an application do you rapid back
out, or do you retract at the same feed rate as you plunge?




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jon_banquer

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Jan 17, 2014, 2:02:47 PM1/17/14
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Rapid out.

Lloyd E. Sponenburgh

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Jan 17, 2014, 2:44:57 PM1/17/14
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jon_banquer <jonba...@yahoo.com> fired this volley in news:15e12c16-1f5b-
4377-9a3d-6...@googlegroups.com:

> Rapid out.

Yeah. If the reamer is sharp and you dawdle in the hole, any tiny bit of
misalignment between tailstock and headstock will translate to the reamer's
taking more cuts as it exits. You can't completely eliminate that, but you
can minimize it by getting out of the hole as fast as possible.

If everything were perfect, it wouldn't do any cutting on the way out,
anyway, so the speed wouldn't matter. But it does.

Lloyd

jon_banquer

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Jan 17, 2014, 3:42:31 PM1/17/14
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Use a G86 boring cycle: Feedrate, Stop, Dwell Time, Rapid out.










jon_banquer

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Jan 17, 2014, 3:54:17 PM1/17/14
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On Friday, January 17, 2014 11:44:57 AM UTC-8, Lloyd E. Sponenburgh wrote:
Suggest looking into floating reamer holders.


Bob La Londe

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Jan 17, 2014, 4:20:26 PM1/17/14
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"Lloyd E. Sponenburgh" <lloydspinsidemindspring.com> wrote in message
news:XnsA2B8962A2DE0Dll...@216.168.3.70...
> Yeah. If the reamer is sharp and you dawdle in the hole, any tiny bit of
> misalignment between tailstock and headstock will translate to the
> reamer's
> taking more cuts as it exits. You can't completely eliminate that, but
> you
> can minimize it by getting out of the hole as fast as possible.
>
> If everything were perfect, it wouldn't do any cutting on the way out,
> anyway, so the speed wouldn't matter. But it does.
>
> Lloyd

Don't you run the risk of a deep spiral score mark that way?

jon_banquer

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Jan 17, 2014, 4:32:03 PM1/17/14
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Are these thru holes?

You want no risk use an M00 so you can check and if necessary clean the reamer by hand before you retract it from the hole.


Lloyd E. Sponenburgh

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Jan 17, 2014, 5:44:38 PM1/17/14
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"Bob La Londe" <no...@none.com99> fired this volley in news:lbc6r1$8ou$1
@dont-email.me:

>
> Don't you run the risk of a deep spiral score mark that way?

Spiral, yes. Deep, no. It's better to have a steep spiral than one that
eats out more i.d.

Lloyd
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