Formula to define the radius of a helix
Formula to define the radius of a helix
(OP)
Hi,
I'm trying to define a helix using an equation to define the radius.
Siemens online help isn't spectacular and I haven't found the menus very intuitive.
Can anyone offer any guidance?
Thanks
Chris
I'm trying to define a helix using an equation to define the radius.
Siemens online help isn't spectacular and I haven't found the menus very intuitive.
Can anyone offer any guidance?
Thanks
Chris





RE: Formula to define the radius of a helix
Best regards,
Michaël.
NX7.5.4.4 + TC Unified 8.3
Win 7 64 bit
RE: Formula to define the radius of a helix
How do I enter that into a law curve? I keep getting 'Expression does not exist for law'
Thanks
RE: Formula to define the radius of a helix
Which NX Version are you using ?
Regards
Didier Psaltopoulos
http://www.psi-cad.com
RE: Formula to define the radius of a helix
Thanks
RE: Formula to define the radius of a helix
- Type: Number, constant
- Name: t
- Formula: 0 (zero)
Since you have worked out other values in terms of the angle, you may want to enter a few helper expressions:- Type: Number, constant
- Name: turns
- Formula: 7
- Type: Number, angle, degrees
- Name: angle
- Formula: turns * 360 * t
When NX evaluates your law curve, it will automatically vary the parameter t from 0 to 1. Your other expressions will be evaluated accordingly (angle will range from 0 to [turns * 360]). You can now write your x, y, and z expressions in terms of the angle.www.nxjournaling.com
RE: Formula to define the radius of a helix
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: Formula to define the radius of a helix
Have a look at attachment...
Helix - conical shape created using expressions in NX 7.5
Best Regards