1 / 24

Mechanical Fasteners

Mechanical Fasteners. BY DAVID HAFFEY IAN KARLE JACOB KENT. OBJECTIVE. EXPLAIN THE USE OF: RIVETS NUTS & BOLTS EXPLAIN COMBINATION OF FASTENERS METAL AND PLASTIC. OUTLINE. INTRODUCTION OF FASTENERS TYPES OF FASTENERS RIVETS METAL & PLASTIC FASTENERS

kirsi
Download Presentation

Mechanical Fasteners

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Mechanical Fasteners BY DAVID HAFFEY IAN KARLE JACOB KENT

  2. OBJECTIVE • EXPLAIN THE USE OF: • RIVETS • NUTS & BOLTS • EXPLAIN COMBINATION OF FASTENERS • METAL AND PLASTIC

  3. OUTLINE • INTRODUCTION OF FASTENERS • TYPES OF FASTENERS • RIVETS • METAL & PLASTIC FASTENERS • RECYCLING & DESIGN CONSIDERATIONS • CONCLUSION

  4. INTRODUCTION • PURPOSE OF RIVETS & SCREWS • PURPOSE OF GENERAL MECHANICAL FASTENERS

  5. TYPES OF FASTENERS • RIVETS • SCREWS, BOLTS AND NUTS • PLASTIC AND METAL • ADHESIVES • GLUE • TAPES • WELDING

  6. APPLICATIONS OF RIVETS • INDUSTRAL • BUILDING CONSTRICTION • PRODUCTION • TOYS

  7. TYPES OF RIVETS • SOLID • TUBULAR • FULL, SEMI, SELF PIERCING, COMPRESSION • SNAP, PUSH & BARB

  8. ADVANTAGES OF RIVETS • COST • CHEAPER THAN MOST THREADED FASTENERS • LITTLE TRAINING REQUIRED FOR USE • JOIN DISSIMILAR MATERIALS • ASTHETICALLY PLEASING • VARIETY OF SHAPES

  9. DISADVANTAGES OF RIVETS • LOWER STRENGTH THAN BOLTS & SCREWS • TENSILE • FATIGUE • NOT WATER OR AIR TIGHT • DIFFICULT TO DISASSEMBLE • LOOSENS UNDER HIGH LOADS

  10. TYPES OF METAL FASTENERS • SCREWS • OVAL, ROUND HEAD, SHEET METAL, LAG BOLTS • BOLTS & NUTS • MACHINE, CARRIAGE, STOVE • NAILS • COMMON, WIRE, DRYWALL, FINISH

  11. ADVANTAGES OF METAL FASTENERS • HIGHER STRENGTH • THAN RIVETS OR GLUE • LOW COST • EASE OF DISASSEMBLY

  12. DISADVANTAGES OF METAL FASTENERS • HIGHER WEIGHT THAN RIVETS OR PLASTIC • MOST ARE NOT CORROSION RESISTANT • VULNERABLE TO CYCLIC LOADINGS • DIFFICULT ASSEMBLY IN TIGHT PLACES • HOLES CAN WEAKEN PART

  13. TYPES OF PLASTIC FASTENERS • SCREWS • NUTS & BOLTS • CABLE TIES • PANEL FASTENERS

  14. APPLICATIONS OF PLASTIC FASTENERS • AUTOMOTIVE • WIRE HARNESS RETAINERS • PANEL & MOLDING CLIPS • GAS & BRAKE LINE CLIPS • TOYS • APPLIANCES • COMMERICAL

  15. MATERIAL TYPES AND PRODUCTION • NYLON • ACRYLIC • HDPE • PC • PP • INJECTION MOLDED

  16. ADVANTAGES • LOW COST • LIGHT WEIGHT • CHEMICAL RESISTANT • LOW THERMAL & ELECTRICAL CONDUCTIVITY • DESIGN FLEXIBILITY

  17. DISADVANTAGES • POOR UV RESISTANCE • STRESS RELAXATION • CREEP • DYNAMIC LOADING FAILURES • MORE INTRICATE MOLD DESIGNS • LOWER MECHANICAL PROPERTIES THAN METAL

  18. COMBINATIONS OF METAL AND PLASTIC FASTENERS • METAL INSERTS IN INJECTION MOLDING • THUMB SCREWS • STUDS WITH PLASTIC ATTACHMENTS (AUTOMOTIVE)

  19. REASONS FOR COMBINATIONS • ASTHETICALLY PLEASING • COMBINATION OF PROPERTIES

  20. RECYCLING CONSIDERATIONS • METAL AND PLASTIC MUST BE SEPERATED • MATERIAL SEPERATION OF PLASTICS • PROPERTIES DEGRADE MUILPILE USE

  21. DESIGN CONSIDERATIONS • HOLD STRENGTH • RECYCLING ABILITIES • PRODUCT LIFE • APPLICATION • MOLD INSERTS • PROPER DIAMETERS AND WALL THICKNESS • TORQUE AND TENSILE STRENGH

  22. CONCLUSION • APPLICAIONS • TYPES • OTHER CONSIDERATIONS

  23. QUESTIONS

  24. FIN

More Related