Inventor General Discussion

Inventor General Discussion

20 Posts
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Registered: ‎10-23-2012
Post 1 of 6

slotting a cap screw

310 Views, 5 Replies
11-16-2012 04:31 PM

Mr Mather,

Experiencing some difficulty slotting the cap screw shown. The problem is this: an additional sketch is created using a rectangle .313 * .094 centered .2815 * .047 from the center of the screwhead. The sketch gets finished the extrusion is created but does not show up. The extrusion is not visible even though a new sketch was created.

20 Posts
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Registered: ‎10-23-2012
Post 2 of 6

Re: slotting a cap screw

11-16-2012 04:47 PM in reply to: wmd2

Here is the drawing with the extrusion. However, when the screw is rotated from the isometric view to a front view the extrusion is no longer visible. What needs to be corrected?

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Post 3 of 6

Re: slotting a cap screw

11-16-2012 08:38 PM in reply to: wmd2

You need to close the profile as the centreline is not recognised as part of the profile.  Attached is the closed profile for the screw body.

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Registered: ‎10-23-2012
Post 4 of 6

Re: slotting a cap screw

11-18-2012 12:05 PM in reply to: luiww

Ok I see what you did. However, the caphead is supposed to be round on the top. So, how is that design feature accomodated with the slotting?

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Post 5 of 6

Re: slotting a cap screw

11-18-2012 02:14 PM in reply to: wmd2

Have you had any training?  Worked through any tutorials?


You have produced two disconnected surfaces and then extruded a third one through those two, producing a third surface.  I think that you want a single solid, correct?


I don't have 2012 installed at home, so I can't produce a model for you.  But you want to fix your first sketch first- it's not fully constrained (constrain it to the origin point), and the center line is actually two lines which are construction type.  Change it to one normal (non-construction) centerline type line.  With a centerline-type line, dimensions to other features are taken as diameters rather than radii.


Now your second sketch needs to be incorporated into the first one-- I don't see any benefit to making it a separate feature.  When you revolve that sketch you should get a solid model rather than a surface model.


Now for the slot-- again, the profile needs to be closed, and it should cut the slot exactly as you wish.


JD Mather has a very good basic skills white paper available.  I don't have the link saved at home, but a quick browse through his responses to various problems should turn up the link.

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Post 6 of 6

Re: slotting a cap screw

11-18-2012 03:42 PM in reply to: wmd2

Start a new part file.

Create the sketch shown below.  One sketch!

Attach the file here.


You might also read this documnent.



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