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EML2322L-Assigned Parts - EML2322L MAE Design and...

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EML2322L – MAE Design and Manufacturing Laboratory Assigned Parts Outlines (DETAILED VERSIONS) This document outlines the sequence to manufacture the assigned parts (wheel hub and shaft clamp bracket) using the equipment in the laboratory. The TAs will guide you through the process and explain why the parts are made in this manner. These outlines are provided so you can review what was done during each session on the parts. Your knowledge of the processes and nomenclature outlined on the final page will be evaluated on semi-weekly lab quizzes and the final exam, so make sure you understand how these parts are manufactured. Milling Machine Part: 1. Cut a piece of 1/2” x 2” rectangular bar stock roughly 4-1/8” long in the bandsaw 2. Face ½” x 4” sides (don’t need parallels; file edges after cutting each side) 3. Face 2” x 4” sides (use parallels; file edges after cutting each side) 4. Square off the ½” x 2” ends so you can make a proper measurement (use parallels & overhang left side of the vise); perform light finish cuts at full ½” depth of cut (DOC) axially and .020” DOC radially; zero DRO on final pass on second side (don’t take the part out of the vice) 5. Finish machining 4” length; “plunge” 0.050” in X per pass at full ½” DOC; cut slowly; leave 0.020” material in X direction for finish pass; zero DRO on final pass 6. Cut ¼” slot in plate; zero the Z-axis; take 0.050” depth cuts; leave 0.020” material in X & Z directions for finish pass at full ¼” DOC 7. Use edge finder to locate hole datums; rotate edge finder approx 1000 rpm; stop spindle before resetting edge finder with your finger; offset 0.1” for the radius of the edge finder 8. Drill all 9 holes using center drill (1600 rpm); understand purpose of center drill 9. Drill all 9 holes thru using 1/8” drill (1600 rpm); understand purpose of peck drilling 10. Drill 4 tapped holes thru using 0.157” tap drill (1400 rpm);
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