Swingline Heavy Duty Tacker 800 Caitlin Boone Nate

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

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

Overall Assembly

Animation https: //www. youtube. com/watch? v=J 2 xj 54 b. Tn. L 8&feature=youtu. be Musical Credit: Production MAJ “How It’s Made” 2001

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

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

Analysis – Static Simulation All results were within accepted limits: Highest Stress: 6. 424 psi Yield Strength: 3. 199 e+4 psi Highest Deformity: 2. 589 e-7 in

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

Questions?