square shaft

[Philippe Guglielmetti]

The bad thing is that my dimensions are hidden in the extrude definitions.

why is it bad ? what's the problem ? I see no reason why you would have all
dimension in sketches...
But if you really want this, draw a construction sketch with all those
dimensions, then use "extrude to vertex" or equations to have the extrusions
driven by the dimensions in your sketch.

Philippe Guglielmetti - www.dynabits.com

[Joan]

makes sense.

But I have trouble making the revolved cut. The diameter equals the sides of
the square part. What kind of sketch do I draw?

it's always good to draw it the way they'll make it...
extrude a square shaft, then make a revolved cut for the round parts

I have a square shaft with 3 bearings - one at each end and one in the
middle. The "square" is machined round at the bearings.
How do I draw that in the best way?
1. Draw a circle, extrude. Ad square at end, extrude. Draw circle at

end,

extrude etc... The bad thing is that my dimensions are hidden in the

extrude

definitions.
2. Create the round part by revolving the shaft geometry. Insert planes

and

draw squares, extrude.... Again - some of my major dimensions are hidden

in

the extrude definition...
Any suggestions?

[Bruce Wirkkala]

Make you square shaft section being sure to locate the square sketch
centered about the origin. (the best way to do this is to add a construction
line from vertex to vertex and then relate the midpoint of this line to the
origin)
Open a sketch on one of the planes that bisect the longitudinal axis.
Sketch your cut profiles using rectangles and relate the appropriate, inner
sketch lines to the edge of the square profile.
Revolve, Cut.