Screw or thread constraint.
Screw or thread constraint.
(OP)
Hello.
Is there any constraint, at the assembly application, to constraint a male thread to a female thread, or a screw to its bolt, or a vise screw to the screwed hole, in such a way that when you turn it it automatically suffer an advance in the direction of the axis of the thread?
I don't mean at the motion simulation but just at the assembly application.
Is there any constraint, at the assembly application, to constraint a male thread to a female thread, or a screw to its bolt, or a vise screw to the screwed hole, in such a way that when you turn it it automatically suffer an advance in the direction of the axis of the thread?
I don't mean at the motion simulation but just at the assembly application.





RE: Screw or thread constraint.
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: Screw or thread constraint.
RE: Screw or thread constraint.
Perhaps you should look into the motion simulation module...
www.nxjournaling.com
RE: Screw or thread constraint.
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: Screw or thread constraint.
RE: Screw or thread constraint.
Then I will define the distance as a numeric value, and the angle as a function of the distance but I don't know if the assembly is going to respond properly when I rotate the escrew.
RE: Screw or thread constraint.
RE: Screw or thread constraint.
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: Screw or thread constraint.
RE: Screw or thread constraint.
Attached is a video showing the playback of the Assembly Sequence. Note that this was NOT done using the Animation function but rather using ONLY Assembly modeling. This is a real Assembly with real constraints. If anyone wishes, I can also upload the Assembly (it's modeled in NX 8.5).
So skanskan, take a look at the movie and see if this is what you were looking for.
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: Screw or thread constraint.
Could you please upload the assembly, please?
I'll study it.
RE: Screw or thread constraint.
Assemblies -> Sequence...
...and when the Sequence task starts, press the 'Enter' button to play the Sequence.
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: Screw or thread constraint.
I've also tried making a point (on the screw) follow an helix while the axis is always aligned with one direction and it doesn't work well.
But if just create a sphere and force its center to follow a line it works well, I don't know why.
RE: Screw or thread constraint.
I tried to recreate in squencing - no success , can you offer a avi how you had created it?
thanks in advance
RE: Screw or thread constraint.
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: Screw or thread constraint.
I have tried to recreate with no success, how do you create, set up the rotation, that it looks so nice?
TIA
RE: Screw or thread constraint.
Assemblies -> Component Position -> Move Component...
...function and it would 'articulate', honoring the Assembly Constraints. If you can do that, then you can use Assembly Sequencing to 'drive' your assembly as if it were a mechanism.
So start Assembly Sequencing and create a new sequence. Then select the first icon on the toolbar below titled 'Insert Motion' and when the dialog bar comes up, select the Component that you want to 'drive' and then select the next icon, titled 'Move Object' and when the 'drag handles' appear select the one that represents the motion that you wish to apply (note that you can only apply a motion that can actually be performed meaning that even if all the handles are displayed, only one or two might actually be applicable so you really should experiment ahead of time, as I suggested above, using the Move Component function to get a feel for what works and what doesn't). When you select a handle an entry widget will appear where you can enter the amount of movement that you wish to apply. For example, in my threaded-rod case, I select the handle that would rotate the threaded-rod about its axis and then entered the number of degrees that I want it to move, in this case it was 12,000° which gave me approximately 33 rotations. Note that you can enter positive or negative values, just that you can't enter any value which would cause a motion that would exceed the degree-of-freedom. In this case, anything much over 33 rotations would have exceeded how far the threaded-rod could move before it ran out of the nut.
Once you see the preview and if it was OK, then select the 'green' checkmark to accept the motion and you can play it back using the 'VCR' buttons in the toolbar. Note that you can also enter 'camera' postions by rotating the image before or after any motion and hitting the 'Camera' icon in the 'Insert Motion' toolbar dialog, to save that 'point of view'. This way you can get the sequence to zoom in or out, or move around during the sequence playback. To remove individual motions or cameras, open the Sequence Navigator 'tab' on the 'Resource Bar'. You can delete motions and cameras by selecting them and press MB3 and selecting 'Delete'.
Anyway, play with it a bit and you should get the hang of it.
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: Screw or thread constraint.
PS i learned from one of your past knurl files to great success.
Thanks for all you do!
RE: Screw or thread constraint.
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.