Cequent Group “The Development Of A Tie Down Ratchet Group 2 Stephen Smith Otto Gerdeman Adam Schmitz

2 The Team Members  Steve Smith- Group Leader  Ensures that all deadlines are met  Keeps the team organized and focused  Adam Schmitz- Purchasing Agent  Obtains and orders equipment & material  Controls/upkeeps the budget  Otto Gerdeman- Technical Liaison  Coordinates business with the University machine shop  Controls drawings and maintains communication throughout the manufacturing stages

3 Project Background Market is saturated with tie-downs nearly identical in appearance and function –Product differentiation is essential to our client Our objective is to design and create features that provide this differentiation –Quality/Price –Functionality/Ease of Use –Appearance/Packaging Adam Schmitz

4 Steps Taken to Identify Solution Re-examined the objective through a marketer’s perspective Appearance and packaging were first characteristics observed Buying tie-downs is a low involvement purchase The perceived value of the customer is not always the actual value

5 House of Quality

6 Strap Storage Design Final Design:

7 Crank-Winder Otto Gerdeman

8 Crank-Winder Normal Operating Force How to Determine Sudden Spike in Forces Two Options –Experimentally Use Force Measuring Equipment –Theoretically Mass of arm moving at a speed To Many Assumption with Theoretical Calculation Otto Gerdeman

9 Crank-Winder Experiment Otto Gerdeman

10 Crank-Winder Experiment Experimental Data: Calculated Forces at Crank Normal: Worst Case: Otto Gerdeman

11 Crank-Winder FEA Factor of Safety: 3.49 Nylon 6/6 was used as material Otto Gerdeman

12 Snaps for Hook Storage Holds hooks in place –Prevents straps from unwinding in storage Simple and easy to use Cheap to Manufacture Fatigue Analysis –Subject to repeated loading and unloading

13 Fatigue Analysis for Hook Snaps Modeled as a straight beam Givens: Unknowns: δ

14 Stress Amplitude vs. Cycles to Failure Approx. 0.70ksi

15 Final Dimensions D=0.40 in d=0.32 in L=0.40 in b=0.25 in h=0.04 in Fatigue Analysis for Hook Snaps

16 Storage Compartments/Pockets Houses straps while not in use Dimensions acquired from crude prototypes Tight fit increases ease of winding

17 Overall Design - Appearance Cequent desired a more modern look with smoother edges Must compromise size and functionality

18 Overall Design - Size Size is an issue to major retailers like Wal-Mart –Major customer to Cequent Overall size has increased by about 45% –165 in^3 to 240 in^3 –Increase depth at pockets –Smoother edges and curves

19Budget Otto Gerdeman Items purchased:Quantity:Price: Chalk box2$3.97 Dowel Rods5$0.91 Hot glue gun1$9.95 Total:$22.94 Item to be purchased: $65/hour4$260 Nylon shaft5 ft.$3.55 Rapid Prototype1$200 Total:$463.55

20 Timeline Otto Gerdeman

21 Summary Tasks Completed –Rough Prototypes Built –Stress Analysis –Drawings Finalized and Approved Tasks Remaining –Finish Exact Prototype Test –Create Labeling Marketing Research Otto Gerdeman

22 Project Deliverables Provide a new and fresh perspective on Cequent’s products and the overall tie-down market Produce a working replica of the redesigned packaging –A wind-up and storage feature that improves functionality and adds value to consumer –Create a more sleek and modern look –Calculations that prove reliability, safety, and functionality New packaging label that is informative and appealing –Using Marketing concepts

23 Questions?