Radial Engine Assembly : Week 4 Challenge

Piston

• The primary piston body shape was obtained by sketching one side of the picture shown in section view A-A, then rotating the figure around the vertical axis.
• After that, a plane was constructed at a distance of 25 mm, and two circles were drawn on it before it was extruded by 21.5 mm.
• Finally, following the diagrams, a pocket was carved out of the new cylindrical form.
• Using the extract command in the generative form design workbench, the common edge between the main body and this new hollow cylinder was extracted.
• I then used the thick surface command in component design workbench to extrude this edge into a new body and thicken it to the desired thickness.
• The boolean remove command was then used to delete this body from the main body.
• Made an identical effort on the other side.
• Drawing the schematic and adding padding allowed for the creation of the upper bush, lower bush, master rod bearing, piston ring, piston pin plug, and link pin.

Master Rod

• The 28 mm distance between the sketch and the large hollow hole was used to extrude the sketch.
• Then, the entire section was flipped with respect to the plane it rested on.
• Sketch as shown in Section view B-B was drawn and padded.
• Then created the hollow cylinder present on the other side
• Then rectangular slot was created
• Finally attained the draught angle for the connecting rod by making a triangular sketch and then pocketing it.

Articulate Rod

• Inserted padding, and cut slots on both ends of the rectangle.
• Then hollow cylinders were made at both ends, with the necessary fillet dimensions and placements specified.

Assembly

• To simplify the final assembly, a subassembly was first created with the piston, piston ring, upper bush, piston pin, rod bush lower, articulating rod, and piston pin plug.
• To make the final assembly less cumbersome, we made the piston and piston ring subassembly next. We used these parts to put together the radial engine.