Design Graphics Mech 289

Nabil Shalabi 1 st Feb 2008

Clarifications

GCA 1

due Friday, 8 th Feb

CAD 1

due Friday, 8 th Feb check the schedule for other assignments

CAD clarifications In ProE don’t worry about putting dimensions on 3D model For GCA 1 you will need Reference planes

Tutorial Tuesday, Thursday fill FDA 1 Lab (seat 52 students) Then MC 10 lab (seats 20 students)

Questions about Assignments

Lecture Outline • • • • • Manufacturing considerations Review of machine tool lab Creating models using drill charts Examples of parts and how to make them Discussion of specific models

Manufacturing considerations • • • • • Making sure that the Technician has no questions about how to make your model Tolerance (because machining is never 100% accurate) Machining process used Stock you will use (standard dimensions) Tools you will use

Lathe http://www.iimc-india.com/images/lathe-machine/lathe-machine-1a.jpg

Milling machine http://www.americanmachinetools.com/images/cnc_milling_machine.jpg

Drill Press http://www.jayceetools.co.uk/images/Jet/jet-jdp-10-lge.jpg

Band saw Other Machines Grinder CNC http://www.poolewood.co.uk/aca talog/Basato-1.jpg

http://www.powermaster india.com/images/img67.jpg

http://www.me.unlv.edu/News/MEG News/CNC%20in%20place.JPG

Drill VS End mill End mills Drill bit http://www.efunda.com/processes/machining/images/mill/ end_mill_types_1.gif

http://www.comparestoreprices.co.uk/images/ce/ceka-drill bit-set-multi-use-t3063.jpg

Counter bore VS countersink http://www.topline.com.my/images/bild114.jpg

Tapping Make hole longer to account for the tip of the tapping bit Specify the taping depth on drawing

stock • • • • http://www.mcmaster.com/ Every single standard stock imaginable Every single mechanical component imaginable Use it when you design

Examples

Hardest piece I have ever machined

My Design Graphics Project • Come up with design • 40 different pieces • 4 iterations to get perfect • 120 hours of work

Sweeping a path