Gears have two basic properties; they transfer motion from one axle to the other, and two axles turn in opposite directions. Torque is a new quite c omplicated(at least to me) concept that first appeared in this chapter. Torque is the product of force and distance, which can be increased by either increasing the applied force, or increasing the distance from the center of rotation.
Gears are originally used to make changes in velocity of rotations. For example, when two gears which are 8t and 24t are connected, the gear ratio i
s 3:1 and 8t spins three times than 24t. When two gears are meshing together, if the velocity increases while the torque is reduced, it is called "gearing up". On the other hand, it is called "gearing down" when the velocity is ruduced whereas the torque increases.
The geartrain is a way to convey energy with the same direction of rotation with changes in speed which can be modified easily. However, for more smooth running of the robot, less process is needed because of the friction caused between gears. There are many types of gears such as worm gears and bevel gears that change direction of transferred energy, clutch gears that limit the applied strength and knob wheels which are
actually not gears but have same roles as the bevel gears. Except gears, there are other efficient devices. Pulleys and Belts transfer energy to the romote place keeping the direction of energy.(clockwise or anticlockwise) Chains have same properties as the pulleys and belts but they don't have any likelihood of any slippage and accurate calculations are available. By using several types of gears in a complex form, another type, the differential gear is created.
6 comments:
I like the part that you explained about torque and velocity. Good examples to understand easily.
Clear and detailed summary of the chapter...I may have to look to this to help finish my own summary...
I wonder if, when creating our geared robots today, we could create a massive gear train with multiple 40t gears to try to set some speed records...
Interesting Information about the Gear Ratios, just asking, are those gears from the Lego Pieces?
I think your summary is well organized with deatils~!
nice blog post
i like the amount of detail that you have put on this blog.
and nice photo of the gear!
Very nice, complete and helpful summery about Gears! I also found the examples that you used to explain the main concept of gears very useful.
Post a Comment