Hey, everyone!
So this was an interesting week in the world of ME 250--we spent lots of time together working on our MCM project (hooray for Thursday nights at the Ugli!). After hours of toil and trouble (see pictures below), we came up with what we thought were final designs for our cart, axles, and pillow blocks.
As may or may not be visible in the CAD drawing below (Figure 2), there are 36 separate screw holes to anchor the three types of pillow blocks on to the cart base--a lot of dimensions to include on a small type-A mechanical drawing! After we re-dimension our cart base (as well as the pillow blocks and one type of axle), we'll be ready to start machining this week. We've created a bill of materials and a manufacturing plan for this module, and we'll hopefully have a firm grasp on the manufacturing before exam week comes next week (time flies, eh?).
Before we start manufacturing, however, we'll have to buy some additional materials, most notably a 1/4 aluminum rod with more precise tolerances to better fit in the supplied wheels. Characterizing and measuring the motors is also a major goal for this week--we want to make sure that all alignments will work before any parts are manufactured.
If you have any questions, comments, or concerns about our progress, feel free to email us at me250group42@umich.edu. We welcome suggestions!
Thanks all for now, folks... see you in a week!
-Team 42
Figure 1: Team member Dan Cox prepares some calculations.
Figure 2: CAD of full cart Most Critical Module (MCM) without wheels or driving mechanisms.
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