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Guitar Neck Duplicator

Guitar Neck Duplicator. By Eric Hall. Background. Difficult to Replicate Time Consuming Generally done by hand. What’s Available. Expensive ($2,000 – $4,000) Manually Operated. Problem. The customer wants a more time efficient way to duplicate guitar necks. Requirements.

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Guitar Neck Duplicator

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  1. Guitar Neck Duplicator By Eric Hall

  2. Background • Difficult to Replicate • Time Consuming • Generally done by hand

  3. What’s Available • Expensive ($2,000 – $4,000) • Manually Operated

  4. Problem The customer wants a more time efficient way to duplicate guitar necks.

  5. Requirements • The process must perform high enough quality work so that only sanding is required to finish the product. • It must be able to duplicate a variety of different length necks (about 10"- 18" long). • Wear items must be easy to replace. • It must be autonomous.

  6. Solution The device is based on the key maker concept. (The cutting tool follows a path that is dictated by a previously fabricated pattern part.) The key maker is explicitly two dimensional, while the Guitar Neck Duplicator will be three axis (The third being rotational).

  7. System Overview PLC

  8. Mechanical Concept

  9. Traverse Motor Force Calculation Torque = .2 x Diameter(Thread) x Force(axial) 45 LB*Inches = .2(.25 inches) x F F = (45 LB*Inches) / (.2 x .25 inches) F = 900 LB T F D

  10. Electrical Concept Overview Front Limit Switch Traverse Motor Programmable Logic Controller Inductive Current Sensor Router Rear Limit Switch Rotation Motor

  11. Electrical Failsafe Concept Overview Front Safety Limit Switch Programmable Logic Controller Rear Safety Limit Switch Traverse Motor

  12. Software Concept Overview Button == Pressed Switch 1 == Pressed Button == Released Button == Pressed Turned On Setting Set Ready Start 0 0 0 0 2 0 0 0 0 0 0 0 0 0 1 Wait == 2 Seconds Button == Pressed Traverse Direction 1 Wait == 1 Sec X 1 1 Switch 2 == Pressed Stepper == 100% Stop Direction 2 Stop Stop Direction 1 +1 0 1 100 0 0 +1 0 1 State Traverse Direction 2 Wait == 1 Sec Switch 1 == Pressed 0 0 0 X 0 1 Router (0,1; off,on) Traverse Motor (0,1,2; stop,fwd,rev) Stepper (0 – 100%) Stepper == 100%

  13. Budget

  14. Work Breakdown

  15. Timeline

  16. Resource Management • Have a working agreement with another group • I am gaining machining assistance in return for software and electrical help.

  17. Questions

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