MCEN90054 Design and Manufacturing Practice
Summarize into a report the assembly results for the selected Prusa printer parts using alternative higher volume production processes. This report will include:
1. Proof of Operation
A. Create a video of the printer in operation, including showing it printing and the printed result.
B. In the report include images of the final printer fully assembled and an image of a printed part.
C. Comment on the printed part quality.
D. Note that all all machines must be properly disassembled and returned to the blue boxes by Thursday night of your build week.
2. System Build with New Parts. For each of the 11 new parts: consider the performance of the assembly that contains the new part. Note that teams will lose marks for broken or poorly fabricated parts that affect assembly or operation. Team members are expected to step in if they see issues during the build.
A. Does the part have any installation difficulties?
B. Does the part perform. as well as the original?
3. Redesign Sub-Assembly Performance.
A. Record the time needed to complete the steps to assemble the y-axis assembly with the new joint design with the new y-rod holders. Compare with the time predicted for the previous design from your DFA analysis.
B. Provide images of the new y-rod holder joint. Comment on its functional performance. What works best about it, what further improvements could you make?
C. The new y-rod holder had two holes where you placed screw inserts. What is the hole-hole spacing required, complete with a tolerance? How precisely does that tolerance mean for your screw insert placement?
4. Assembly Production Line Design.
A. Define and justify a takt time for production of the machine, following the provided assembly guide (not the original Prusa assembly guide).
B. For the machine, define an assembly process: number of workcells and workers, what assembly steps done at each workcell.
C. Draw a preliminary assembly line layout floorplan for assembly process, to scale.