Airbag Automaton John Bailey Hattie Hiatt Chun Hau Low Jason Harwood Wayne Gallup Jason Canaday
Presentation Outline § § § § § Problem Definition Customer Needs Summary Project Breakdown ME Subteam Designs ECE Subteam Designs How They Fit Together Deliverables Budget Work Plan
Problem Definition Problem Statement § Autoliv uses a variety of machines to fold and package their airbag. These machines take up space, capital, and require a new machine design for each new folding process.
Project Breakdown Customer Needs Plug and play machine that supports airbag folding processes 1) SMED tool interface 2) Move interface and tooling 3) Central Hub that supports all operations of folding process
Tool Interface Concepts § Decision Criteria § § § Ease of use In-house manufacturability Cheaper alternative to existing robotic interfaces § Important Design Aspects Design Inspiration § Auto connect/disconnect pneumatic connection § Rocking docking § Lock down mechanism Applied Robotics in Use at Autoliv Top to Bottom: Switch Step in Snowboard Bindings Walther Tool Master Robotic Tool Changer Techno-Sommer Robotic Tool Changer Robotic Accessories Robotic Tool Changer
Tool Interface Concepts § Functional Requirements Docks tool to machine § § § User Locks/Unlocks tool manually Hands-free connection of utilities Senses secure connection § Design Criteria § § Usability Cost SMED Two Step Connection Procedure § Put on § Lock in
Slider Support Concept § Alternatives for Slider Support § § Slider support using open cylindrical bushings on precision ground shafts Roller/Ball Bearings Dovetail ways Triangular ways Closed cylindrical bushings
Hub Conceptual Design -Actuator attached to 12 O’clock arm -Pivot connection depends on arm design -Tilt connection mounted to Bobcat (base)
ME Budget Item Cost Linear Bushings 200 Precision Shafts 500 Aluminum for brackets 50 Manufacturing Materials 150 Power/Data/Pneumatic Connections (Male/Female) 500 Stainless Steel Rods 50 Pivot bushings 150 Steel for Pivot Axles 50 Various Fasteners 150 TOTAL COST $1800 Linear Guides Tool Interface Hub
Tool Positioning System Requirements: Control position of tool within 1/8 th inch resolution Move tool to minimize cycle time but stay within hardware specifications
Hardware Components • Drive • Position Sensor • Controllers
Drive Stepper DC servo AC servo Company Oriental Motors Mavilor Kollmorgen Model # AS 911 AA MSS-6 MT 306 B 1 Continuous stall Torque N/A 1. 83 Nm 3. 32 Nm Max Holding torque 4. 0 Nm N/A Peak Torque N/A 11 Nm 11. 3 Nm Max speed 3000 RPM 6000 RPM 4000 RPM Rated current 6. 5 A 10. 7 A 5. 35 A Rated voltage 100 -115 VAC single phase 0. 000271 kgm 2 67. 8 VDC. 00040 kgm 2 230 VAC single phase. 000111 kgm 2 Motor weight 6. 6 lb 12. 79 lb 8. 4 lb Frame size 3. 35 in 3. 54 in Cost $1, 180. 00 $1, 116. 00 $930. 00 Rotor inertia
Position Sensor Requirements: • Minimum velocity of 15 in/s (0. 4 m/s) • Maximum 1/8 th inch (3 mm) resolution • Measurement range of 600 mm Sensor Options
Controller Currently researching: -Programmable Logic Controller -Microcontrollers
Tool Controller • Controls tool movements • Tool identification • Computer requests tool ID or • Tool sends ID at interface connect
ECE Budget Drive $1200 Motor $1000 Controllers $150 Position Sensor $500 Cables $300 Other Discrete Electronics $100___ Total $3250
Putting it all Together
Team Design Deliverables § § § SMED tool interface Single arm assembly Hub System § Accommodates 3 arms, Linak tilt system and routes utility cables § Tool identification system § Proof Of Concept tool recognition and automatic program download § Tool positioning control
Team Documentation Deliverables § Complete set of engineering drawings of custom parts and product information for manufactured parts § Repeatability testing § Failure and Fatigue analysis with predicted machine lifetime § Electrical circuit diagrams control models
AIRBAG AU • TOM • A • TON Design Schedule
AIRBAG AU • TOM • A • TON Overall Budget ME Budget $1800 ECE Budget $3250 Miscellaneous Costs $400 Total Cost $5450
Скачать презентацию Airbag Automaton John Bailey Hattie Hiatt Chun Hau
c05100f3118cf94ddeddd8d96efbdb40.ppt