logo
NOTICE:  This is the new PunchCAD forum. You should have received an email with your new password around August 27, 2014. If you did not, or would like it reset, simply use the Lost Password feature, and enter Answer as the security answer.
Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error
arc between two circles
Options
Go to last post Go to first unread
Previous Topic Next Topic
clarkwr1  
#1 Posted : Thursday, July 20, 2017 7:20:13 AM(UTC)
clarkwr1

Rank: Guest

Joined: 7/19/2017(UTC)
Posts: 3
How do you draw this arc.
File Attachment(s):
arc 1.vcp (286kb) downloaded 21 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
jdi000  
#2 Posted : Thursday, July 20, 2017 7:38:12 AM(UTC)
jdi000

Rank: Administration

Joined: 7/29/2007(UTC)
Posts: 1,862
United States

Thanks: 1 times
Was thanked: 87 time(s) in 81 post(s)
Hello

Are you tracing this from a picture or do you have dimensions available?

Regards

Jason
Windows 11, 10
Back to top
clarkwr1  
#3 Posted : Thursday, July 20, 2017 8:09:05 AM(UTC)
clarkwr1

Rank: Guest

Joined: 7/19/2017(UTC)
Posts: 3
the dimensions don't really matter. Just draw two circles and try to get the tangent arc to go to the outside as depicted.
Back to top
L. Banasky  
#4 Posted : Thursday, July 20, 2017 12:39:49 PM(UTC)
L. Banasky

Rank: Senior Member

Joined: 2/16/2007(UTC)
Posts: 602

Thanks: 153 times
Was thanked: 149 time(s) in 102 post(s)
I don't really know an easy way in ViaCad. We need to add tan,tan,radius to the circle menu
for our Wish List. AutoCAD has had it for decades.
For your drawing I would trace and scale a known dimension.
I know this video won't help, but shows tan,tan, radius.

http://www.screencast.com/t/UqK0rJWTCYx

Here's a link to a traced arc.

http://www.screencast.com/t/N6Sg6Fpqp8


Larry

Edited by user Thursday, July 20, 2017 1:14:32 PM(UTC)  | Reason: Not specified
Back to top
rokoko  
#5 Posted : Thursday, July 20, 2017 1:30:44 PM(UTC)
rokoko

Rank: Senior Member

Joined: 9/28/2013(UTC)
Posts: 345

Thanks: 4 times
Was thanked: 57 time(s) in 45 post(s)
you can try a solution with one guide line and the three tangent circle tool

finally you can trim the resulting circle

Edited by user Thursday, July 20, 2017 1:38:25 PM(UTC)  | Reason: Not specified

File Attachment(s):
threetangentcircle.vcp (278kb) downloaded 12 time(s).

You cannot view/download attachments. Try to login or register.
viacad pro 10 powerpackpro, viacad pro 9 german, mac
Back to top
24c  
#6 Posted : Friday, July 21, 2017 7:04:35 AM(UTC)
24c

Rank: Senior Member

Joined: 7/27/2015(UTC)
Posts: 265
United Kingdom

Thanks: 34 times
Was thanked: 50 time(s) in 37 post(s)
..or you can use the Tangents Points Arc tool, twice over to do the same.

1. Draw two circles
2. Draw line, at a tangent off one of the circles, or either perpendicular from a radius
3. Use the Tangent arc tool and create an arc that meets virtually at a tangent on the second circle (I'm sure I can set this to snap by altering something in the preferences)

If you're not happy with this, then create a tangent line off the second circle and use the Tangent Points Arc tool to work back to the first one, and it'll be a little closer to a tangential curve.
Admittedly a fudge, and probably not quite precise enough, but it works OK for me.

24c attached the following image(s):
Screen Shot 2017-07-21 at 13.58.42.png (29kb) downloaded 4 time(s).

You cannot view/download attachments. Try to login or register.
macOS 14.3.1 (Sonoma) - MacBook M1 Max 64GB 2TB SSD & external display - SharkCAD Pro v14.1.0 build 1654
Back to top
Users browsing this topic
Guest (2)
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF.NET 2.1.2 | YAF.NET © 2003-2024, Yet Another Forum.NET