CAD Portfolio

The pump housing was made using a sweep, extrudes, revolves, and holes. First, a curve was created to make the path for the main outer surface. A half of a circle was swept along the line to make the outer surface and maintain a hollow interior. Extrudes were used to make the input and output ports of the pump.

The base support was created using a combination of extrudes, revolves, holes, ribs, rounds, and mirrors. The lower section of the part was created using an extrude. The two pillars were created using by revolving a profile about an axis. The corner holes and ledges were created using extrudes. Rib functions were used to create the supports on the pillars seen at the bottom, top, and center of the part. Hole functions were used to create the holes through the top and sides of the pillars. Mirror functions were used throughout the process to simplify symmetrical parts.

The chain loop was created by using a pattern of a chain link along a 2D reference outline. Points were assigned on the loop which allowed an axis on the link to be constrained to it. A constraint was placed to make the right plane of the link and the assembly be parallel. These constraints were used to pattern the link at each point, completing the loop. The link was created using two sub assemblies. The first sub assembly included a set of link plates, bushings, and rollers. The second sub assembly included another plate and two pins which connect each of the bushing/roller assemblies to each other.

The valve cam assembly is made up of six parts; the base, cam, rocker arm, rocker shaft, valve, and valve guide. The parts in this assembly were constrained using the Creo Mechanism feature. The cam was constrained to the bottom right side of the rocker arm. The valve was constrained to the bottom left of the rocker arm. A spring was simulated to be placed at the bottom of the valve guide and end at the top of the valve. A servo motor was placed on the shaft of the cam. This allows the assembly to simulate the motion of how each part will react during a rotation of the cam.

The brake rotor was created using a base model with a family table. The base model was a 10 inch diameter rotor created using extrudes, revolves, holes, rounds, chamfers, and patterns. The family table adjusted the dimensions for the diameter, angle of drill holes, and distance of the drill holes. This allows for a 10, 11, 12, and 13 inch rotor to be created using the base model family table.

The spur gear is a flexible model that utilizes the parameters table to create a desired gear. The dimensions that can be modified in the parameters table include the diametric pitch, number of gear teeth, face width, key size, hole diameter, pressure angle, and fillets on the teeth.

The guide block was used to perform a structural analysis. A force was applied on the left face of the center bracket around the hole to simulate a bolt through the hole. Constrains were set on the base, back, and in the holes on the them. This gave an ideal of where the stress concentrations are highest and lowest in the part. This information can be used to adjust the part to add more material to certain areas and remove some in areas where it is not required.