1. ME 317 Day 2 Economics of Process Selection –Cost Factors –Fixed vs. Variable costs –Direct vs. Indirect costs Characterization of Part Geometry –Metrology –Tolerances –Surface Finish

2. Cost Factor Comparison (From Bralla)

4. Costs (21 st Century Manufacturing, Wright)

6. Product Design and Development, Ulrich and Eppinger

11. Dial Caliper www.tpub.com/ engine2/en2-29.htm www.tpub.com/ engine2/en2-29.htm

12. Micrometer

14. http://www.mfg.mtu.edu/cyberman/quality/sfinish/

15. The Ra parameter measures average roughness. It is not sensitive to occasional spikes and gouges. On the other hand, the Rmax parameter is designed to detect these anomalies. The two surfaces shown here have nearly identical Ra values but very different Rmax values. http://www.mmsonline.com/articles/039903.html http://www.mmsonline.com/articles/039903.html Surface Finish

17. http://www.predev.com/smg/index.html

18. Instructions for “wringing” gage blocks http://www.deterco.com/tech_info/han d_tools/gage_blocks.htm Gage Blocks http://www.chicagobrand.com/OTHPAGE2.HTM

19. Good info (including prices) on small inspection gages http://www.auto-met.com/vermontgage/default.htm Ring Gages

20. Coordinate Measuring Machine