[modeleng] Re: Tapers
- From: "Ron Head" <ron.head@xxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Sat, 10 Jan 2009 18:29:50 -0000
Hi Hubert
Easy enough to do, using the Windows calculator. Set the view to 'scientific'.
Divide the increase in radius by the length. Tick the 'inverse' box. Click on
'tan' and that is your answer in degrees.
As Rich says, be careful because you now have the angle of one side of the
taper, not the included angle.
Cheers
Ron
----- Original Message -----
From: Shep
To: modeleng@xxxxxxxxxxxxx
Sent: Saturday, January 10, 2009 4:48 PM
Subject: [modeleng] Re: Tapers
Thanks Rich
I have found tables giving specific equivalents, online (ie x inches per
foot = y degrees, minutes, seconds) but thus far not the formula, (which
must include using sines).
I have also found similar confusions and take everything with a pinch of
salt!
The reason I require this information, is that I have an inexpensive digital
bevel gauge, which gives degrees, and decimals thereof, with nice BIG
figures - a super tool for enabling an old chap to accurately set a
top-slide, and perhaps a taper-turning attachment..
Cheers! Hubert
----- Original Message -----
From: "R.L. Roebuck" <rlr20@xxxxxxxxxxxxxxxx>
To: "Modeleng" <modeleng@xxxxxxxxxxxxx>
Sent: Saturday, January 10, 2009 3:59 PM
Subject: [modeleng] Re: Tapers
> Hi there Hubert,
>
> I don't know the formula off-hand - but I would say be careful if you look
> online for conversion factors...
>
> I recently had a confusion between an engineering designer and a company
> making bits for us at work, where one specified:-
>
> * Inches of taper of the diameter per foot
>
> * Inches of taper of the radius per foot
>
> ...with one giving you twice the taper of the other!
>
> Needless to say the tapered fittings and the holes didn't fit and it took
> six weeks for the parts to be remachined (only to find the same two had
> mixed up metric fine and course threads for the large diameter bolts
> holding the tapered fittings in place!).
>
> Such is life!
>
> Yours,
>
>
> Rich.
>
> On Sat, 10 Jan 2009, Shep wrote:
>
>> Hello everyone What is the formula needed to convert to degrees, the
>> taper given in inches per foot?
>>
>> Thanks, all of you mathematical gurus!
>>
>> Cheers! Hubert
>>
MODEL ENGINEERING DISCUSSION LIST.
To UNSUBSCRIBE from this list, send a blank email to,
modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject
line.
MODEL ENGINEERING DISCUSSION LIST.
To UNSUBSCRIBE from this list, send a blank email to,
modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.
Other related posts:
