The engineer is using a materials testing maxchine to bend a metal bar between two supports. The computer controls the experiment and records the force and deflection data.
Photo Courtesy of MTS Systems Corporation.
After completer chapitre 3, you should answer these questions:
Explain the differences between ball, straight roller, tapered roller, and thrust bearings. Give examples of real situations in which you would select one to be used instead of another.
What is the purpose of a bearing's separator?
Make a cross-sectional drawing of a tapered roller bearing.
Why are flexible coupling sometimes used when connecting shafts in a drivetrain?
Make an accurate sketch for the shape of a spur gear's teeth.
What is the fundamental property of gearsets?
Define the terms diametral pitch and module.
What are a rack and pinion?
What are the characteristics of helical gears, and how do they differ from spur gears?
Make a sketch to show the difference in a shaft orientations when bevel gears and crossed helical gears are used.
Under what circumstances would you select a v-belt to be used instead of a timing belt in a machine and vice versa?
Briefly describe the operation of a dirll press, band saw, lathe, and mill.
What is a lead screw?
