[魚羊] GS
1. Describe the uses and configuration of power screws assembly.
2. (a) Explain the critical conditions of self-locking and
overhauling for power screws assembly; (b) Describe the
efficiency of a power screw assembly.
3. Figure out the three critical points in the thread engagement
zone of a power screw.
4. Describe the use and characteristics of joints in machine
assemblies including (a) geometrical discontinuities,
(b) bulbous geometry, and (c) damage misalignments.
5. (a) Explain the potential fastening methods, and
(b) the selection of fastening methods used in machine design.
6. Illustrate various threaded fastening arrangements.
7. Describe the UNS and ISO standards for threads.
8. Figure out and explain in details about the tolerance range for threads.
9. (a) How to properly select the thread fastener materials, and
(b) avoid stripping of external threads.
10. What are the preloading effects on the consequence
of the tightening process for a bolted joint?
11. List and describe two more practical approaches
for considering the spring rates of members.
12. If design conditions required a pressure-sealed
bolted joint, how does a gasket must usually be installed?
13. As general rule, how should be the thickness of the gaskets?
14. (a) Describe the proof load and proof strength in the
specification standards for bolts. (b) Define the meanings
of the load factor and the factor of safety guarding
against joint separation?
15. Describe the uses and characteristics of brakes and clutches.
16. How to select the brake and clutch materials.
17. Describe the self-locking and self-energizing for designing
brakes or clutches.
18. Describe the uniform pressure and uniform wear assumptions
for designing brakes or clutches.
19. Describe the characteristics of flexible power transmission elements.
20. Describe the tensile loading in a loading belt.
21. How the effective coefficient of friction to be modified
used for V-belts for flat belts does?
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06/12 12:54, , 1F
06/12 12:54, 1F