2012 IDEA ASSEMBLY “HINT” PACK

ARM: draw in 2D

• Copy / paste this view into Inventor

Whole object takes two extrusions… 1st Extrusion- take full thickness = 9/16”

2nd Extrusion will require a sketch like this…

Yoke in three Inventor steps…

Yoke:I chose 2D for the sketch; you could make this directly in 3D.Note I did not bother with the hole; do as point center in Inventor.

After extruding the sketch to full height, sketch on top plane and locate the point center. Finish sketch and use 3D Model Hole command to add a ½-13 UNC threaded hole. Be sure to select the thread option (circled in green).

Threaded Holes:To cover the vernacular: ½-13UNC-2ATranslates to:: Diameter – Threads Per Inch – Class of Fit=½” Dia bolt –with- 13 threads per inch in the Unified National Course family –with- internal fit (i.e. hole is tapped)

Add two additional holes and yoke is completed.

Spreader Nut

Two steps in Inventor

Sketch the half section of the nut (minus the hole completely)

Revolve the sketch. When completed, sketch on the top plane and locate center with a point. Add a 3D Model Hole feature using same ½-13UNC-2A specs. Done!

Screw

Sketch the full profile and then cut in half.

Revolve

3D Solids Menu:Look for “Thread” under the Modify tab.Select the face to cut and total length of 3.125.

Need a work plane…Create a sketch on top of the object; need a line from center to quadrant.Create a work plane at the end point of the new line.

Sketch on work plane. Share geometry to get center axis. Locate a 11/32” dia circle and extrude through all.

Done!*Well almost… Got fancy and added a .0625 chamfer on the bottom edge to help “start” the threads.

Pin (Spring Pin)

*Catch specs given on bottom of page 3.

Spring Pin

Sphere’s“Knobs are 9/16” diameter spheres, with ¼” deep holes for press fit.”-Bottom left of page #3.

Step 1: Sketch a 9/16” circle and bisect it with a line down the middle. Trim off half.

Revolve the semi circle into a full sphere.

Share the sketch for Revolution 1 and create a work plane at the endpoint of the center line. Next, create a sketch on the new work plane.

Project Geometry of the center line onto the work plane and use that point as the center of the 5/16” hole, ¼” deep.

Handle:5/16”x4” long.

Sketch a 5/16” circle and extrude to 4” length.