Q Individual Plastic Part Design Project The purpose of the project is to develop your plastic part design skills and 3D modeling skills. You have a complete freedom to either design a new plastic part or modify an existing plastic part around you (no size limitation). The project will take 5% of your total final grade. Three deliverables will be submitted via Sakai: (1) one Word file describing the part; (2) one original 3D file for your part; (you can use any 3D modeling software such as Autodesk Inventor, Solidworks, Pro/E Creo, etc.); (3) one 2D drawing file (*.pdf). 1. One Word file including the following items (1%): • What is the designed plastic part used for? • List the functional requirements of the designed part (e.g., bearing the load of 10 lbs, coloring, as a housing component, etc.) • Why do you select a plastic, instead of other engineering materials (metal, ceramic, etc.), to meet those functional requirements listed above? • Why do you select the injection molding process to make the parts? • Use the software to calculate the volume and weight of your part based on the selected plastic. • Based on the calculation above, what type of injection molding machine you should choose in terms of clamping and injection shot capacity? If you would like to make a multi-cavity mold to improve productivity, how many cavities would be Ok based on your selected injection molding machine? 2. One original 3D file (3%): If you use Autodesk Inventor to create the part, you simply submit your ****.ipt file (**** is your last name). If you use other 3D modeling software, then you submit both the original file and ****.stp file for your part. Check you design considering the following items: • Have you considered stress concentration (i.e., corner radius)? • If you have ribs, do they meet the typical rib design guidelines? • Do you have proper draft angles to allow part ejection from the mold? • Do you have uniform wall thickness to enhance moldabiliity? • For thick sections, do you consider “core out” to make uniform wall thickness? • Do you consider DFA (design for assembly)? • And so on…. 3. One 2D drawing file ****.pdf (1%): includes the following items • Title block: your name, part description • Specify the material and drawing unit • Complete dimensions and tolerances • Does your part require the surface roughness? • Any other specifications…