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Adrian Allen Steven Lona Nicholas Tracy

This text provides information on the changes made to the clock base and background design, along with the process summary and required tools for fabrication. It also includes a cost analysis and Gantt chart.

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Adrian Allen Steven Lona Nicholas Tracy

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  1. Ideas-Unlimited Adrian Allen Steven Lona Nicholas Tracy

  2. Changes since last time… • New logo was added to repertoire. • Material change from ¾” to ½” acrylic. • New through hole design for clock insert. • New base design. (no adhesive) • Inscription added to clock base.

  3. Set Up Number Operation Description Machine Tool Description 10 Cut-off 0.50 in. x 2.25 in. cross sections of cast sheet acrylic stock to a length of 5.25  .015 in. Cut-off Saw 20 Fabricate background housing on the planar surface opposite datum feature A 3 axis vertical machining center 30 Polish all surfaces of the base Propane torch PROCESS SUMMARY FOR BASE

  4. 0.125 +/- 0.01 0.50 A 0.125+/- 0.01 0.4375 +/- 0.01 2.25 +/- 0.015 B 5.25 +/- 0.015 Set Up 20 Sketch Scale: 1:1 Units: Inches

  5. Set Up 20 Descriptionfor Clock Base REQUIRED TOOLS • MACHINE TOOLS: Vertical Machining Center, VF-OE • FIXTURE: Kurt Vise with 1 ¼” parallels • CUTTING TOOLS: 7/16 inch Double Flute End Mill • MISCELLANEOUS TOOLS: Edge Finder, Dial Indicator

  6. Process 20 Description for Base Operation Number Operation Description Tool Number Tool Description Important Process Parameters 1 Slot mill opposite datum feature A in one pass 1 7/16 inch end mill d = .125 in. w = 5.25 in. V = 314 fpm F = 0.0042 in/th

  7. Set Up Number Operation Description Machine Tool Description 10 Cut-off a 0.50 in. x 5.25 in. cross section of cast sheet acrylic stock to a length of 8  .015 in. Cut-off Saw 20 Fabricate clock housing, PSU logo, and circular contours on the planar surface opposite datum feature A. 3 axis vertical machining center 30 Polish all surfaces of the background Propane torch PROCESS SUMMARY FOR BACKGROUND

  8. Hole Diameter = 2.3125 +/-0.005 in. Diameter = 3.75 +/- 0.005in. Logo goes here 8.00 +/- 0.015in. 5.2500 +/- 0.015 in.

  9. Set up 20 Description for Clock Background REQUIRED TOOLS • MACHINE TOOLS: Vertical Machining Center • FIXTURE: Kurt Vise with 1 ¼” parallels • CUTTING TOOLS: 1/2”, 1/4”, 1/8”, and 1/32” Double Flute End Mills • MISCELLANEOUS TOOLS: Edge Finder, Dial Indicator

  10. Process 20 Description Clock Background

  11. Assembly for Acrylic Clock • Join the base and the background by press fitting • Insert battery into clock insert • Place clock insert into clock housing

  12. Bill of Materials Acrylic Sheet (48 x 96)inch = $215 Clock Insert = $5.90 (30 count) = $177 Batteries = $0.55 (30 count) = $16.50

  13. Cost Analysis • Break even point – 22 clocks • Selling Price of $50 • Want to produce 8 extra for the 3 group members and 5 professors.

  14. Gantt Chart

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