internal tooth lock washer

Hi, Any one have suggestion how to created internal tooth lock washer (twist) Thanks!!!

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I'd just model it in it's flat state.
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I model mostly in surfaces, so that's how I'd do it, but you could do it in solids too.
You can built one section of the rim. Then add a VSS with a trajpar to create the twisted tooth, or sketch both sections, separate them and do a SBB, or a blend. Bunch of different approaches.
The idea is, do just one section. You can then group your features together and pattern the group around an axis (not my favorite). Or copy the surface around an axis and pattern the copy, then merge the surfaces.
Should only take a few minutes.
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model mostly in surfaces, so that's how I'd do it, but you could do<BR>it in solids too.<BR><BR>You can built one section of the rim. Then add a VSS with a trajpar to<BR>create the twisted tooth, or sketch both sections, separate them and<BR>do a SBB, or a blend. Bunch of different approaches.<BR><BR>The idea is, do just one section. You can then group your features<BR>together and pattern the group around an axis (not my favorite). Or<BR>copy the surface around an axis and pattern the copy, then merge the<BR>surfaces.<BR><BR>Should only take a few minutes.</BLOCKQUOTE> <DIV>Agreed on doing a section and patterning. But, for the tooth, how about a spinal bend (sketched bending axis, geometry to be bent, start and end planes normal to bend axis). Not too difficult when you have the tooth in geometry already. Or how about a simple blend between sections. Skinning cats!</DIV> <DIV>&nbsp;</DIV> <DIV>David Janes</DIV></BODY></HTML>
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model mostly in surfaces, so that's how I'd do it, but you could do<BR>it in solids too.<BR><BR>You can built one section of the rim. Then add a VSS with a trajpar to<BR>create the twisted tooth, or sketch both sections, separate them and<BR>do a SBB, or a blend. Bunch of different approaches.<BR><BR>The idea is, do just one section. You can then group your features<BR>together and pattern the group around an axis (not my favorite). Or<BR>copy the surface around an axis and pattern the copy, then merge the<BR>surfaces.<BR><BR>Should only take a few minutes.</BLOCKQUOTE> <DIV>Agreed on doing a section and patterning. But, for the tooth, how about a spinal bend (sketched bending axis, geometry to be bent, start and end planes normal to bend axis). Not too difficult when you have the tooth in geometry already. Or how about a simple blend between sections. Skinning cats!</DIV> <DIV>&nbsp;</DIV> <DIV>David Janes</DIV></BLOCKQUOTE> <DIV>Uhhmmmhumm, and the idea is worthwhile geometry: is is worthwhile to create helical swept thread? or this type of super accrucate washer geometry? I think we need some ver/val data for justification. You need to answer the question: what does this design gain by this design fidelity? IOW,&nbsp;what difference does it make and who cares.</DIV> <DIV>&nbsp;</DIV> <DIV>David Janes</DIV></BODY></HTML>
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spinal bend (sketched bending axis, geometry to be bent, start and end planes normal to bend axis). Not too difficult when you have the tooth in geometry already. Or how about a simple blend between sections. Skinning cats!

helical swept thread? or this type of super accrucate washer geometry? I think we need some ver/val data for justification. You need to answer the question: what does this design gain by this design fidelity? IOW, what difference does it make and who cares.

Hi Janes, I just want to learn how to do it, for myself. at work we just model them plat, it good to known that you can do it! thanks you to all.
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If you model them flat, they are whole lot easier to work with. Doing "Point-On-Surface" mates is a pain in the butt when your lock washers are modeled "true"
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The other point for modleing them flat is that that is how they will be when in the assembled condition. If they are in a family table, then you may have 1 instance showing them in the normal state, if you need it for a drawing.
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