1. Swingline Heavy Duty Tacker #800 Caitlin Boone, Nate Duxbury, Hamed AlGendy MECHENG 5680 – April 2015

2. Overall Assembly More Complicated than it Looks! ◦28 Unique Parts – No Generic Stock Components ◦Almost All Sheet Metal ◦Multiple Springs ◦Springs ◦Alternate Modeling Method to Animate ◦3D Sketches ◦Most Parts Mate with Multiple Parts

3. Overall Assembly

4. Animation https://www.youtube.com/watch?v=J2xj54bTnL8&feature=youtu.be Musical Credit: Production MAJ “How It’s Made” 2001

5. Advanced Mates Springs ◦New Modeling Method for Springs ◦Animations ◦Physical Assembly Handle Mechanism ◦Tangent Mate ◦Surface to Line Mate

6. Complicated Geometry Sheet Metal Parts ◦Uneven Wall Thickness ◦Flat Patterns ◦Forming Tools Many Mating Features Springs ◦Modeling: Loaded vs. Unloaded

7. Analysis – Static Simulation All results were within accepted limits: Highest Stress: 6.424 psi Yield Strength: 3.199e+4 psi Highest Deformity: 2.589e-7 in

8. Drawings – GD&T Flatness ◦Mating Face ◦Moving Parts ◦Datum Plane Perpendicularity ◦Ensures Teeth Align with Striker ◦Too Acute – Won’t Mate ◦Too Obtuse – Won’t Hold Securely Parallelism - Tangency Specification ◦Mating Faces ◦Bent Sheet Metal ◦Only Highest 3 Points Make Contact

9. Questions?