serrated tube ends---see image, who can tell me why?
serrated tube ends---see image, who can tell me why?
(OP)
Following is a link to the image I made to show my problem.
http://graysony.nease.net/sw/serrate.jpg
I am doing a serrated tube end (with triangle shape teeth).
I have two ways to do that but the results are:
If I go method A, circulat pattern does not work at all.
If I go method B, circular pattern does work, but there must be space between copies
----But what I need is the patterned copied to be connect each other around the cirle.
Who knows why I fail? Could you play on you computer to see whether you get same result as I did?
http://graysony.nease.net/sw/serrate.jpg
I am doing a serrated tube end (with triangle shape teeth).
I have two ways to do that but the results are:
If I go method A, circulat pattern does not work at all.
If I go method B, circular pattern does work, but there must be space between copies
----But what I need is the patterned copied to be connect each other around the cirle.
Who knows why I fail? Could you play on you computer to see whether you get same result as I did?






RE: serrated tube ends---see image, who can tell me why?
•Copy one of the cylinder surfaces using "Insert --> surface --> offset" with an offset of zero (inner or outer)
•extend the surface edge beyond the solid cylinder body so there is enough extra to work with
•Put triangular cuts on offset surface using "Insert --> Surface --> Trim"
•Use the surface as a cutting tool by using "Insert --> Cut --> Thicken"
http://www.EsoxRepublic.com
RE: serrated tube ends---see image, who can tell me why?
RE: serrated tube ends---see image, who can tell me why?
RE: serrated tube ends---see image, who can tell me why?
Neither of the methods you show will work because 15 circular patterned lofts will create joining edges of zero thickness when "in space" (ie. in the bore of your part). This is a limitation in SW, unless you create multibodies (ie. do not merge the result). A workaround might be to create your bore after the circular pattern.
In this case (in fact in most cases) however, I agree with with aamoroso, the best way to create your part is to simulate what actually happens in the machine shop. You do not need to create a sweep or loft, a simple V-cut is all that is required. The "overlapping" cuts will create the "tapered" shape of the serrations that you show. I have seen many great looking solid model parts, but, like Escher drawings, they cannot physically be made using standard machine shop practices.
RE: serrated tube ends---see image, who can tell me why?
I found a lady from Taiwan did an example using my intended method but it works, I don't know why she could pattern with zero space/thickness while my software says no.
Another way I found by someone else, he build 3D sketches --- 2 triangles on the inner and outer cylinder wall them 'loft' --- I knew nothing about 3D sketch at this moment. I will learn it soon.
An upside-down triangle-cut could make SIMILAR tri-angle teeth around. but as someone here already be aware that the top line of the triangle tooth is parrallel to the top surface --- The one I showed in image, the tooth top-line is not parallel to the top surface.
Anyway, I do very appreciate for your kindly help....I am not quite understand the words wrote by 'TheTick'---he is talking how to cut, but my prolem is on the circular pattern. I will try all the methods with your valuable suggestion.
Thanks you all again for your help!
Grayson
RE: serrated tube ends---see image, who can tell me why?
RE: serrated tube ends---see image, who can tell me why?
RE: serrated tube ends---see image, who can tell me why?
I am guessing your Taiwanese lady cut the bore after doing the serrations, or used multibodies, or used some other software which allows zero thickness contacts.
RE: serrated tube ends---see image, who can tell me why?
As earlier posts state, I too believe you will have better luck cutting the teeth than adding them.
http://www.EsoxRepublic.com
RE: serrated tube ends---see image, who can tell me why?
RE: serrated tube ends---see image, who can tell me why?
I really can't see what you are talking about from my computer. Can you name one specifically? Perhaps its a spamware infection on your computer.
RE: serrated tube ends---see image, who can tell me why?
RE: serrated tube ends---see image, who can tell me why?
CBL - Glad to see your back!! Haven't seen you in awhile! Where have you been hiding
To answer your question on the double green words
From: Dave
FYI -- we now run keyword advertising on the site. In the forums if key words match, you will see a double green underline.
Regards,
Scott Baugh, CSWP
http://www.3dvisiontech.com
http://www.scottjbaugh.com
If you are in the SW Forum Check out the FAQ section
To make the Best of Eng-Tips Forums FAQ731-376
RE: serrated tube ends---see image, who can tell me why?
TheTick
It seems to be erratic or changing ... before I logged in your last post had one on "infection", and graysony's original post had one on "computer" in the last line. After logging in I only see one in your second post at "state".
I had the similar at home last night.
RE: serrated tube ends---see image, who can tell me why?
Not hiding ... I have been doing some extra-curricular work for a friends company, which involved learning the ways of the "Dark Side"
I have been following the threads all the time, just haven't allowed myself the time to particpate.