creating threads in solids

[thedoctor]

Secondary school teacher looking around to see if anyone knows how to create threads in solids? Have tried felix chook but program keeps crashing. Any help would be appreciated.

[Brad Eyben]

I'm not familiar with the felix.dll but I use thelix.dll to create the path for the outside of the thread, then create section geometry of the thread. Using solid,sweep takes a long time but works for me.

[Webby]

Brad's method is correct. Swept solids are fairly taxing on the system. Many solid modellers actually have options to suppress threads in assembly views to lessen the heavy load on the system memory.

[BOATDUDEGUY]

stumbled on this by accident but

is there a way to put threads on the solids created in mastercam?

[Scott Lundin Shopware Inc.]

Create a triangle (60 degree V thread) in the top plane. Create a helix in the right plane. Solid sweep the triangle along the helix.

[BOATDUDEGUY]

Create a triangle (60 degree V thread) in the top plane. Create a helix in the right plane. Solid sweep the triangle along the helix.

 

Alright thanks

 

Can you also give me some advice on how to create impeller or prop blades im totally in the dark with that stuff

[Rotary Ninja]

I have tried to get solid sweep to work to cut threads I don't know how many times. Every time I try that I get the Parasolid® Kernal Interface Error: PK Error Code:999 - Geometry fails to pass checks. I have tried this at work and at home and I always get the same results. It doesn't work in the top of the front view now matter what I try.

[Rotary Ninja]

Ok. Wow, I think I finally figured out why. I was looking at Scott's example and saw that his triangle was closer to the size of the actual thread cut. I think I was drawing my triangle too big and it was overlapping on the OD face of the thread. Does that make sense? I figured this out by creating a swept surface and saw that my threads were fine on the ID, but the OD face was overlapping itself. I offset the outer face of my triangle in to be a diameter .02" larger than the OD of the bolt I was making and voilà!

[Scott Lundin Shopware Inc.]

^ Yes.

[Chris Rizzo]

^^ If you make your triangle (60deg lathe tool) tool large, it "intersects" itself with each revolution, thus erroring out.

 

If you throw a big chamfer on the nose of the bolt first, then sweep the threads it looks very nice.

 

Sidebar- Try bringing in sw file with history tree and look how hole wizard threaded holes are created. Very cool. Basically a positive bolt is in there, then a boolean remove to make the id threads.