Totem

Objective:

Design a totem a totem that would mate with other totems created by colleagues. Totem must be 2 inches tall and contain base diameter of 1.50 inches with at least two lathe operation cuts, two mill operations, one drilled hole and one width-mating feature with precise tolerance of .005 and .002 allowance. All other dimensions contain +/- 02 tolerance.

The North End would be manufactured using manual machine and the South End of the totem was to be finished with CNC.

Process:

Created two lathe operations cuts first . I first would use turning to decrease diameter of Totem to 1.25 inches with a depth of .55 inches in the Z-direction. Second lathe operation I created a parting operation where I reduced the diameter to 1.13 inches at depth of .80-.95 from top of part.

One of the required mill cuts would remove material from the middle on outward. The area of removal would be .70 inches across the middle with an endmill. Last mill operation would cut through the left over material at the top across diagonally on one side.

Lastly the hole was punctured in from the new depth of .55 inches and extended to .70 inches. A chamfer was also created on the top of the totem of .10 x 45 degrees.

I would then design the South End to mate with the totem of a colleague. In this case it would just be a hole with diameter of 1.002 inches and depth of .25 inches.

After creating the CAD model I defined all of my operation on a SolidWorks drawing using GD&T principles. We would then create a CNC toolpath on Fusion 360 to create the NC Code required for a CNC machine to manufacture our South End.



Results:

A totem with the required specifications to meet project design requirements. Learned how to correctly communicate through my drawing the various cutouts of my design. Further expanded my CAD and CAM skills.