Final Design Model

 

 

By the final week of the first semester, the folding bicycle had been fully designed and tested in ANSYS and so a full assembly model was created in PTC Creo. The model to the right demonstrates a partially folded model where the upper steering column has been lowered across the front wheel. This model is lacking the top tube hinge fold, due to difficulties in estimating the size of cranks and pedals within the CAD software which would have allowed correct placement to be specified. This was the first time that the group developed a perception of the final product and how it was intended to look after construction.

 

Once the complete assembly was finalised and the Lead Design Engineer and Chief Executive had signed off their approval, the technical drawings then had to be created for each part. These were drawn to assist with the maufacturing phase and provide a set of clear instructions for the lab technicians when submitting component parts to the workshop. These covered the dimensions and sizes of all of the tubes and mounts, but importantly, a number of tracing drawings were also produced of the end profiles of tubes to allow the ends to be correctly shaped before welding.