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Machine Element Design

Machine Element Design. Design of Belts and Chains. Design of Classical V-belts. Classical V belts cross sections. Design of V-belts. Calculation of design horse power Design horse power= trainsmitted horse power(given)*S.F Selection of belt type

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Machine Element Design

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Presentation Transcript

  1. Machine Element Design Design of Belts and Chains

  2. Design of Classical V-belts Classical V belts cross sections

  3. Design of V-belts • Calculation of design horse power • Design horse power=trainsmitted horse power(given)*S.F • Selection of belt type • Calculation of pulleys dimensions and center distance • Calculation of horse power rating according to belt type • Correcting the horse power rating • Calculating the number of required belt rows

  4. Table of Service factor for V-belts

  5. Table of Service factor for V-belts(continued)

  6. Selection of Classical V-belts cross section

  7. Classical V-belt sheave and groove dimensions

  8. Classical V-belt horse power rating formulas

  9. Speed Ratio Correction Factor(Ksr)

  10. Classical V-belts datum Length

  11. Length Correction Factor

  12. Arc of contact Correction Factor

  13. Design of chains and Sprockets Roller chain Parts

  14. Sprocket Dimensions • A Sprocket has three diameters: • Inner diameter • Outer diameter • Pitch diameter=P/sin(180/N) • Sprocket Parameters: • Pitch(P) • Number of Teeth(N) • chain parameter • Chain pitch(P)

  15. Types of Sprockets

  16. Selection of Service factor • Design horse power=trainsmitted horse power(given)*S.F

  17. Selection of Sprocket Type and Pitch based on horse power and speed of small sprocket

  18. Roller Chain Dimensions(according to selected pitch)

  19. Calculation of Center Distance and number of chain links • C: center distance • P: chain Pitch • L:chain length • N1: Number of small sprocket Teeth • N2: Number of largesprocket Teeth • dp: Pitch diameter of small sprocket • Dp: Pitch diameter of large sprocket

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