Shape design in NX8
Shape design in NX8
(OP)
Hi,
I need to design a shape similar to the one in the attached file.
The ID is 14 and ED is 18 mm. Total number of the teeth is 20.
The other dimension do not matter, I am interested in applying the right design (the shape of the teeth on a circular area)
Thanks
I need to design a shape similar to the one in the attached file.
The ID is 14 and ED is 18 mm. Total number of the teeth is 20.
The other dimension do not matter, I am interested in applying the right design (the shape of the teeth on a circular area)
Thanks
MZ7DYJ





RE: Shape design in NX8
Are the teeth cross sections all the same similar to a normal gear? Do they twist from OD to ID at all? If they don't twist, create the hollow cylinder and then extrude a triangle on a plane parallel to the cylinder axis to cut out the teeth and then array the extrusion and any blends. If the teeth cross sections twist at all, the extrusion won't work.
Tim Flater
NX Designer
NX 8.0.3.4
Win7 Pro x64 SP1
Intel Xeon 2.53 GHz 6GB RAM
NVIDIA Quadro 4000 2GB
RE: Shape design in NX8
I'll try to send a better picture.
I am more interested in learning the procedure of designing the teeth than in accuracy of the shape....
MZ7DYJ
RE: Shape design in NX8
Another approach would be to shorten the length of the Tube and rather than create a cutter, create a positive body to Unite with the top of the Tube to create the teeth.
Be careful adding Edge Blends to Patterns - Unsuppress Edge Blend(5) and watch the Pattern Feature fail miserably. You can get around this by modeling the Tube in a section and model a single tooth (or 2 half teeth) and one of the final steps being rather than use Pattern Feature or Pattern Face, use Instance Geometry.
IMO, the best thing you can do with copying something around in a circular manner if the part proves to be a bit complex - model a "pie section" of the part and use Instance Geometry with a final Unite at the end. This method removes any errors resulting from an Instance or Pattern misinterpreting which Edges to which they are supposed to be applied more often than not. I've had Pattern Face suggested as a workaround, but it too usually fails (with my examples, at least).
You will gain experience and be able to break things like this down quite easily the more you encounter them. I designed wheels for over 10 years and found myself frustrated more than once.
teeth_nx8.prt
Tim Flater
NX Designer
NX 8.0.3.4
Win7 Pro x64 SP1
Intel Xeon 2.53 GHz 6GB RAM
NVIDIA Quadro 4000 2GB
RE: Shape design in NX8
So, reinventing the wheel, eh?
www.nxjournaling.com
RE: Shape design in NX8
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.
RE: Shape design in NX8
N2 2 seems to be more appropriate.
Thanks
MZ7DYJ
RE: Shape design in NX8
LOL - I wish. The surfaces and using blending tools could be a bear, but the workflows never really changed much.
Tim Flater
NX Designer
NX 8.0.3.4
Win7 Pro x64 SP1
Intel Xeon 2.53 GHz 6GB RAM
NVIDIA Quadro 4000 2GB
RE: Shape design in NX8
First off, apologies for changing subjects, but it's somewhat appropriate for this topic.
Any response regarding why the Blend feature gets messed up in the Pattern Feature? This isn't the first time I've ran into Edge Blend not Patterning correctly. Is it working any better in NX8.5 and newer? If not, are there any whispers of shelving or changing Instance Geometry in the future? If there are, I think you have a good case for putting that on hold until Pattern Feature is behaving as expected (if it isn't in NX8.5 or newer versions).
Thanks!
Tim Flater
NX Designer
NX 8.0.3.4
Win7 Pro x64 SP1
Intel Xeon 2.53 GHz 6GB RAM
NVIDIA Quadro 4000 2GB
RE: Shape design in NX8
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.
RE: Shape design in NX8
Thanks for the quick reply. I'm going to make a new thread, as I've got a few more questions related to this.
Tim Flater
NX Designer
NX 8.0.3.4
Win7 Pro x64 SP1
Intel Xeon 2.53 GHz 6GB RAM
NVIDIA Quadro 4000 2GB