ITW Paslode Senior Design Team Electrically Powered Nailer

ITW Paslode Senior Design Team Electrically Powered Nailer 1

Speaker: S Carrington Overview • • Introduction to Project Goals and Objectives Previous Work Proposed Changes Testing Deliverables, Schedule, and Budget Summary 2

Speaker: S Carrington Introduction to the Team • Two Semester Project – 470: Stephen Carrington, Rob Southerland, Kenton Wyckoff – 497: Nick Froggatt, Sean Raines, Lucas Johnston, Sherry Guo • Faculty Advisor: Professor Downing • Teaching Assistant: Jun Hwan Kim 3

Speaker: S Carrington Introduction to ITW Paslode • Leading manufacturer of cordless nailers • Two classes: Trim (smaller) and Framing (larger) • Created first cordless nailer 25 years ago, dominant company since • Currently utilizes combustion technology, similar to automobile Cordless Framing Nailer Source: http: //www. paslode. com/Cordless-Nailers/CF 325/ Picture source: http: //www. paslode. com/ 4

Speaker: S Carrington Goal and Objectives • Goal: Create an all electric handheld trim nailer (competitive to existing handheld nailers) • Objectives – Research new materials and designs to reduce weight and size – Implement new design and create prototype – Test and deliver results to ITW-Paslode 5

Speaker: S Carrington Previous Semester’s Work and Expectations • Used spring to store energy • Pulley acted as displacement multiplier (requires 4 x force) • Steel driver located in Aluminum tube • Large belt slip and stretch, multiple ropes • Heavy and not small 6

Speaker: S Carrington Proposed Design Changes • Die spring instead of compression, much smaller and lighter • ¼ circle pulley design • Steel reinforced belt to reduce stretch and improve strength • Hand held impact driver with open frame motor • Potentially much smaller framework 7

Speaker: R Southerland The Prototype • Gates Mectrol supplied sample of rubber belt – Very limited stretch – Grooves in bottom help avoid slip • New pulley design incorporates valleys – Only ¼ of circle, reduce size Photo Source: http: //www. google. com/patents/EP 0439093 A 1? cl=en 8

Speaker: R Southerland The Prototype Continued • Impact driver with open frame motor that works! – 18 Volt Li-ion battery – Matches desired specs • New dies spring(s) – As stiff as previous, substantially lighter and smaller • New clamp for spring-rope attachment Photo Source: https: //www. google. com/shopping/product/48616692 80984860069? q=hitachi%20 impact%20 driver&hl=en&sqi=2&bav=on. 2, o r. r_qf. &bvm=bv. 45645796, d. b 2 I&biw=1600&bih=1119&wrapid=tlif 13671 1880198310&sa=X&ei=4 JN 8 Ufqf. Hab. R 2 QXoh 4 B 4&ved=0 CH 8 Q 8 w. Iw. AA 9

Speaker: R Southerland Problems • Belt with grooves functioned different than rope – Needed to adjust the attachment method – Slip on pulley becoming a problem • Added machined piece to driver • Included “clamp” to pulley, increased friction and aligned grooves • Flat belt versus round rope 10

Speaker: K Wyckoff Testing Setup 11

Speaker: K Wyckoff Testing Results 12

Speaker: K Wyckoff Testing 13

Speaker: K Wyckoff Additional Research • Torsion Spring – Deemed plausible, never machined – ¼ circle pulley and spring seem adequate • Looking into clutches for Displacement Plot motor disengagement for Torsion Spring • Motor control system developed but EE team never implemented 14

Speaker: K Wyckoff Schedule 15

Speaker: K Wyckoff Deliverables 16

Speaker: R Southerland Budget 17

Speaker: R Southerland Summary 18

Speaker: R Southerland Possible Next Steps 19

Speaker: R Southerland Acknowledgements • • • Sponsor: ITW-Paslode Mr. Marc Largo: Advanced Research Manager, ITW-Paslode Mr. Murray Weinger: Senior Design Engineer, ITW-Paslode Mr. Todd Henry: Business Unit Manager, ITW-Paslode Prof. Stephen Downing: Faculty Advisor Mr. Jun Hwan Kim: Teaching Assistant Prof. Platt and Prof. Jassim, course administrators Mr. Keith Parrish, and all of the machine shop staff Dr. Keng Hsu, Research Engineer, RP Lab Supervisor Dr. Farrow, MTIL Lab Manager 20

ITW Paslode Senior Design Team Electrically Powered Nailer 21