Re: [CAD_CAM_EDM_DRO] Re: AutoCad help. How to draw a smooth curved line between a small and large circle

Yes, indeed the correct way to draw a smooth curved
line is using tan-tan-radius option in the circle
command. I would like to add one or two points here
Peter.
You have mentioned that the cursor was automatically
picking the quadrant of circle and causing the
unwanted bump or sharp edge. This was due to OSNAP
settings already set. You can override object snap
settings by calling in object snap pop up menu any
time within any command by shift+right mouse click and
then selecting tangent option from that menu. Then you
will not have cursor picking un-necesary snaps.

The second point is that in most such applications
using arc command (start,end,radius) and picking two
tangents for start and end will not work. The best way
is to use circle command and then trimthe unwanted
portions.

Thanks

Haider
--- Peter Megan Isabella <apalais@...>
wrote:

> Jarret,
>
> I think that this might have been they way I was
> shown how to do it at class
> a few years ago.
> I will give it a go and see how it turns out.
>
> Peter
> Australia
>
>
> ----- Original Message -----
> From: "jerryflyguy" <hjjohnson@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Tuesday, March 07, 2006 1:12 AM
> Subject: [CAD_CAM_EDM_DRO] Re: AutoCad help. How to
> draw a smooth curved
> line between a small and large circle
>
>
> > The best way I've found is to use The circle
> function w/
> > tan/tan/rad. You select the 'draw circle' icon,
> then type TTR
> > [enter], then select the first circle [ or radius]
> that you'd like
> > to be tangent to, and then the second one, then
> input the radius
> > you'd like on the connecting arc/circle and it'll
> input a circle
> > that is tangent to both other cirlces [ or arc's]
> and at the radius
> > that you desire. If you only want an arc between
> the circles and not
> > another circle then just trim off what parts you
> don't want, using
> > the two original circle as cutting edges.
> >
> > Hope that help's
> > Jarrett Johnson
> >
> >
> >>
> >> AutoCad help. How to draw a smooth curved line
> between a small
> > and
> >> large circle.
> >>
> >> Hi all,
> >>
> >> I can't remember how to draw a curved line that
> joins two circles
> >> together. Imagine a circle 100mm and another
> circle 50mm, the
> >> centre distance apart will be say 300mm. Lets
> draw a straight
> > line
> >> from the top of each circle and join them
> together.
> >>
> >> On the bottom, instead of having a straight line,
> I want to make a
> >> curved line that will be concave. That is, the
> centre of the line
> >> has been lifted upwards closer to the top line.
> Like the opposite
> >> of a smiley face.
> >>
> >> What will happen is I can make a curve to join
> both circles but
> >> where they join the circles will be at the
> quadrants. So there
> > will
> >> not be a smooth blended transition onto the
> curved line. But
> > rather
> >> as soon as the curved line joins the quadrant at
> the bottom of the
> >> circle, it will have a bump/step there as it
> becomes the curved
> > line.
> >>
> >> It is like it needs to be joined further along
> the circumference
> > of
> >> the circle so that it blends in nice and smooth.
> >>
> >> I used to be able to do it, but I can not
> remember now.
> >>
> >> Any ideas?
> >>
> >> Peter
> >> Australia
> >>
> >
> >
> >
> >
> >
> >
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> http://groups.yahoo.com/group/jobshophomeshop I
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> subjects, that are not allowed on the CCED list.
>
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