On Wed, 31 Mar 2021 at 02:36, Chris Albertson <[email protected]> wrote: > > In fusion I'd make the bearing racers by first making the solid donut parts > then placing a slightly uoversize disk inside the metal....
I model bearings in Fusion pretty regularly. 1) Create a sketch 2) "L" for line, click on "centreline" in the floating window, draw a line from the origin vertically upwards. 3) Draw a rectangle to the right of the line. 4) Dimension the inner and outer edges from the centreline. Fusion now automatically makes that a diameter measurement. 5) Dimension the bearing width. 6) "L" for line, draw a vertical line from the midpoint of the top horizontal to the midpoint of the bottom one. Add a sketch point at the midpoint of this line. 7) Hover over the bearing width to find what it is called (d33 or similar). 8) "C" for circle, draw a circle centred on the middle point created in (6). Enter "d33 * 0.7" as the diameter. (or whatever the dimension in (7) was called. 9) Draw two vertical lines from top to bottom of the rectangle, clipping the circle. 10) "T" for trim the portion of those lines inside the circle. 11) Put an "=" constraint between all 4 line segments. Dimension the gap between them to some proportion of the circle diameter that looks right. We now have the basic geometry of all the parts of the bearing other than the cage. I haven't modelled a cage yet... 12) Revolve tool, revolve the inner and outer race profiles around the bearing axis line. 13) Revolve tool, revolve _half_ of the centre circle around the vertical line through the circle. We now have a bearing with two races and one ball. 14) Circular array tool, make an array of balls around the bearing axis, adjusting the quantity until it looks right. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
