On Thu, 15 Aug 2013 06:13:15 -0500, you wrote:
>What does the next paragraph mean?
>> For softer or harder materials you just use the appropriate
>> diameter/pitch faster.
A fastener only needs to do the job it's designed to do and/or support
the load it's designed to support.
For softer mater
On Thu, 2013-08-15 at 09:35 -0400, Dave wrote:
> >>Would it be better to just drop the 50% part of the G code calculator
> and let the savvy look up their hole sizes in MH and just focus on the G
> code?
>
> <<
>
> No! I'm not that savvy... :-)
>
> Besides that takes more time..
>
> Dave
>>Would it be better to just drop the 50% part of the G code calculator
and let the savvy look up their hole sizes in MH and just focus on the G
code?
<<
No! I'm not that savvy... :-)
Besides that takes more time..
Dave
On 8/15/2013 7:44 AM, John Thornton wrote:
> According to the M
According to the MH holes for tapping have a range depending on depth of
thread engagement.
For Class 1A and 2A they are: up to 1/3D, 1/3D to 2/3D, 2/3D to 1 1/2D,
1 1/2D to 3D. The range covers about 60% to 80% thread depth.
Would it be better to just drop the 50% part of the G code calculator
It looks like from further reading in the MH the "standard" only goes as
low as 60%
JT
On 8/15/2013 4:17 AM, andy pugh wrote:
> On 15 August 2013 06:25, Marius Liebenberg wrote:
>
>>> nominal thread diameter - pitch.
>> Now would that be a 50% or 75% thread.
> 75%. (50% threads are a deviation
g here. And
> if I have learned nothing I can teach nothing. :)
>
> On 2013/08/15 03:02 AM, Gregg Eshelman wrote:
>> On Wed, 8/14/13, Marius Liebenberg wrote:
>>
>> Subject: Re: [Emc-users] Tapping G code
>>To: emc-users@lists.sourceforge.net
>>
On 8/15/2013 1:57 AM, Steve Blackmore wrote:
> On Thu, 15 Aug 2013 07:25:44 +0200, you wrote:
>
>> Now would that be a 50% or 75% thread. JT's tables needs both. One for
>> softer metals and the other for the harder stuff.
> Metric threads are usually specified as .65H
In the Machinery's Handbook
On 15 August 2013 10:17, andy pugh wrote:
> On 15 August 2013 06:25, Marius Liebenberg wrote:
>
>>> nominal thread diameter - pitch.
>
>> Now would that be a 50% or 75% thread.
>
> 75%. (50% threads are a deviation from the standard)
By the way, as the ISO metric and ASME / UN thread forms are
if I have learned nothing I can teach nothing. :)
>
> On 2013/08/15 03:02 AM, Gregg Eshelman wrote:
>> On Wed, 8/14/13, Marius Liebenberg wrote:
>>
>> Subject: Re: [Emc-users] Tapping G code
>>To: emc-users@lists.sourceforge.net
>>Date: Wednesday, August
On 15 August 2013 06:25, Marius Liebenberg wrote:
>> nominal thread diameter - pitch.
> Now would that be a 50% or 75% thread.
75%. (50% threads are a deviation from the standard)
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
--
On Thu, 15 Aug 2013 07:25:44 +0200, you wrote:
>Now would that be a 50% or 75% thread. JT's tables needs both. One for
>softer metals and the other for the harder stuff.
Metric threads are usually specified as .65H
I've never seen any deviation in percentage diameter specified for
softer or har
Now would that be a 50% or 75% thread. JT's tables needs both. One for
softer metals and the other for the harder stuff.
On 2013/08/15 03:19 AM, andy pugh wrote:
> On 15 August 2013 02:02, Gregg Eshelman wrote:
>
>> How about just going to Google and searching for a metric tap drill chart?
> It'
@ Greg
I need to know how to do it. Otherwise I have learned nothing here. And
if I have learned nothing I can teach nothing. :)
On 2013/08/15 03:02 AM, Gregg Eshelman wrote:
> On Wed, 8/14/13, Marius Liebenberg wrote:
>
> Subject: Re: [Emc-users] Tapping G code
> T
On 15 August 2013 02:02, Gregg Eshelman wrote:
> How about just going to Google and searching for a metric tap drill chart?
It's actually very easy. For a metric thread the tapping drill is the
nominal thread diameter - pitch.
M6 x 1 ? 5mm tapping drill.
M10 x 1.75? 8.2mm tapping drill.
--
a
On Wed, 8/14/13, Marius Liebenberg wrote:
Subject: Re: [Emc-users] Tapping G code
To: emc-users@lists.sourceforge.net
Date: Wednesday, August 14, 2013, 4:34 AM
JT
What is the correct way to calculate the drill sizes please.
I will do the metric table but I just need to know what is the
Ok, good. I will help with checking once you are done.
On 2013/08/14 12:47 PM, John Thornton wrote:
> Thanks, but Rob did the conversion last night and now I'm adding metric
> fine and metric coarse to it.
>
> The metric side will need to be checked for accuracy as soon as I'm done.
>
> JT
>
> On
Thanks, but Rob did the conversion last night and now I'm adding metric
fine and metric coarse to it.
The metric side will need to be checked for accuracy as soon as I'm done.
JT
On 8/14/2013 5:34 AM, Marius Liebenberg wrote:
> JT
> What is the correct way to calculate the drill sizes please. I
JT
What is the correct way to calculate the drill sizes please. I will do
the metric table but I just need to know what is the right way.
On 2013/08/13 04:30 PM, John Thornton wrote:
> Oh I forgot to mention I converted the first line of each type of tap as
> an example.
>
> JT
>
> On 8/13/2013 9
On Tuesday 13 August 2013 13:52:32 John Thornton did opine:
> Your having way too much fun Gene.
>
Love it John, but tell that to the aching calf muscle from a charley horse
I woke up with Sunday morning that is still making me do a pretty good
imitation of a limp.
Getting to be my age is NOT
Your having way too much fun Gene.
On 8/13/2013 9:50 AM, Gene Heskett wrote:
> On Tuesday 13 August 2013 10:15:50 John Thornton did opine:
>
>> I know most of you guys on the mailing list don't visit the forum so
>> here is a link to a G code generator for drilling and tapping holes on a
>> mill.
On 8/13/2013 12:00 PM, Viesturs Lācis wrote:
> increasing the initial drill size so that height of actual thread profile
> is 50% / 75% of the standard (theoretical) thread profile height?
>
That is it..
Dave
--
Get
On 08/13/2013 09:00 AM, Viesturs Lācis wrote:
> 2013/8/13 John Thornton
>
>> When tapping in steel it is only necessary to have %50 thread depth and
>> %75 thread depth in soft materials.
>
>
> Do you mean it to have tapped 50% / 75% of hole's depth or do you mean
> increasing the initial drill
2013/8/13 John Thornton
> When tapping in steel it is only necessary to have %50 thread depth and
> %75 thread depth in soft materials.
Do you mean it to have tapped 50% / 75% of hole's depth or do you mean
increasing the initial drill size so that height of actual thread profile
is 50% / 75%
When tapping in steel it is only necessary to have %50 thread depth and
%75 thread depth in soft materials.
JT
On 8/13/2013 10:09 AM, Viesturs Lācis wrote:
> 2013/8/13 John Thornton
>
>> This is the metric dictionary if anyone wants to convert the pitch and
>> drill sizes to mm
>>
>> # Metric Dr
That would be complicated to sort out what common metric drill sizes are
for each tap and much easier to just update the dictionary with a few
entries. I'm just not motivated to do either as I don't use metric drills.
JT
On 8/13/2013 9:42 AM, Dave Caroline wrote:
> erm...maths in the code :)
>
2013/8/13 John Thornton
> This is the metric dictionary if anyone wants to convert the pitch and
> drill sizes to mm
>
> # Metric Drills change inch drills to metric and your set
># tap size, pitch, 75% drill, 75% drill diameter, 50% drill for
> steel, 50% dia
>
John, could you, please,
On Tuesday 13 August 2013 10:15:50 John Thornton did opine:
> I know most of you guys on the mailing list don't visit the forum so
> here is a link to a G code generator for drilling and tapping holes on a
> mill. I wrote this mainly because we don't have a tapping cycle and if I
> forgot the pre-
erm...maths in the code :)
Dave Caroline
--
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Get down to code-level detail for bottlenecks, with <2%
Thanks, just don't use the metric option as the data for metric is still
in inch... I have no motivation to convert the few pitch entries in the
metric dictionary so if anyone does let me know.
JT
On 8/13/2013 9:03 AM, Dave wrote:
> Very nice John..
>
> Dave Cole
>
> On 8/13/2013 9:32 AM, John
Oh I forgot to mention I converted the first line of each type of tap as
an example.
JT
On 8/13/2013 9:03 AM, Dave wrote:
> Very nice John..
>
> Dave Cole
>
> On 8/13/2013 9:32 AM, John Thornton wrote:
>> I know most of you guys on the mailing list don't visit the forum so
>> here is a link to a
This is the metric dictionary if anyone wants to convert the pitch and
drill sizes to mm
# Metric Drills change inch drills to metric and your set
# tap size, pitch, 75% drill, 75% drill diameter, 50% drill for
steel, 50% dia
self.NF_TapM = {1:'#6-40,0.6350,M2.9,2.9,M3,3.0',
Very nice John..
Dave Cole
On 8/13/2013 9:32 AM, John Thornton wrote:
> I know most of you guys on the mailing list don't visit the forum so
> here is a link to a G code generator for drilling and tapping holes on a
> mill. I wrote this mainly because we don't have a tapping cycle and if I
> forg
I know most of you guys on the mailing list don't visit the forum so
here is a link to a G code generator for drilling and tapping holes on a
mill. I wrote this mainly because we don't have a tapping cycle and if I
forgot the pre-position move then you get a really neat show as your tap
travers
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