How do I model the inside of a socket head cap screw?

Forum|Forum|14 years ago
July 22, 2011
3 replies
6973 views

The socket head cap screw that I have here is a 1/4-20 UNC and measures .45 inches long, there are threads the full length. The inside of the hexagon, at the bottom, there is a conical cut that ends at a point and it blends with the hexagon. How do they manufacture this?

Regards,

John

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General

C

ChristianSmith

1-Visitor

Go on Mcmastercarr.com and download the model, then just modify the length to whatever you need. Much easier.

D

DavidButz

1-Visitor

John,

It's true, as Christian says, that you don't have to model socket head cap screws if you don't want to; they're available in webspace. However, your question wasn't answered, and maybe you have good reason to create such a detailed model. (Frankly, most folks just sink a hex cut with a flat bottom, and don't worry about that conical surface which is created by a heading operation.) Anyway, here you go. Create a hex Surface going deeper than it will end up and a revolved conical surface going well beyond the hex. Now Merge the 2 Surfaces and Edit/Solidify to cut out the material. Good luck!

David

J

JohnMF.

Author

1-Visitor

David,

When you created the revolved conical cut, did you create it at the bottom surface of the extruded hex?

Regards,

John

D

DavidButz

1-Visitor

John,

No, the advantage of using intersecting (and crossing!) surfaces is that they can be completely independent of each other when individually created, then merged afterwards. In other words, the revolved conical suface goes beyond the hex extruded surface and vice versa.

David

D

DavorGranic

16-Pearl

Socket head cap screws are pressed.

But there is a way to dril square/hexagon holes even.

http://www.youtube.com/watch?v=PMSbdhQM9GU&feature=related

Modeling this is with a few steps first u cut conical inside material then u cut hexagonal hole with extrude from surface to circular surface of conical cut.You make sure your hex sketch is inscribed in conus. And then to complete hex conus transition you use same hex sketch but this time you add material outside of hex cut. kinda hard to put in words so here are few pics.