Trouble drawing a connecting rod

[CMorehead]

I start off with a sketch that contains the OD of the big and and the OD of the little end. I extrude. I then create a sketch for the material between the big end and the little end. I use the previous sketch for reference to create the arcs that go halfway around the big end and halfway around the little end. I extrude the connecting portion from mid-plane. The big end and the connecting portion become one solid body but the little end is a separate body and is not attached. I would like to end up with one solid body. Not sure what I am doing wrong but I can see a large gap between the connecting portion and the little end.

 

[ctopher]

Try create a sketch on the front plane of the complete profile, then revolve.

Chris
SolidWorks 07 4.0/PDMWorks 07
AutoCAD 06
ctopher's home (updated 04-21-07)

 

[SnowCrash]

If you extrude the big end and the little end from the same sketch then they are restricted to be the same extrusion dimension (thickness?). This may not reflect reality. The connecting web definitely should not be the same thickness as the ends.
Perhaps you should start with a sketch of the three elements and create new sketches projected from that for each of the three elements.
I would extrude symmetrically from the sketch plane.

--
Hardie "Crashj" Johnson
SW 2005 SP 4.0 (reluctant to change)
Nvidia Quadro FX 1000
AMD Athalon 1.8 GHz 2 Gig RAM

 

[CMorehead]

"Perhaps you should start with a sketch of the three elements and create new sketches projected from that for each of the three elements."

I tried this and now have 3 separate sketches for the big end, the little end and the bridging section that connects the two. Unfortunately I'm not able to extrude the bridging section sketch that connects the big end and the little end of the connecting rod. I get a message that says I have self-intersecting geometry. I'm using two lines and two 2-point arcs for the bridging section sketch. Perhaps I am not sketching the bridging section correctly?

 

[CMorehead]

Figured out what the problem was. I forget to add the tangent constraints.