I was given this problem as my final output/project. I want to ask if they can give me a tutorial on how to make this figure. I think the values are not given so I think it's safe to assume to make your own value. And how to solve the speed of D?
(I'm not good at this)
It's something like that.
I dont understand it sir...
Look here: Levai's Epicyclic Planetaries "B" Type
There is a file named "Planetaries_B_(scheme).JPG"
The answer is there, look at the renderings, there is one with the solution (general equation), you just have to use the teeth numbers you have.
I saw the file here, they look similar sir :D Thank you...
Can I add a follow up question, how do you get the solution or answer of it?
I saw the video sir, they look similar, I think but the gear on the right looks big from the problem... Still thank you sir :D
How do you come up with the answer sir?
The answer is 29.107 CCW.
About your questions:
One speed is CW, one is CCW. One must be positive, other negative. You choose which, but usually we use "right-hand rule";
GR is the gear-ratio between first and last gears, as shown on the picture;
M is the module of the gear, in metric system we use module, so the primitive diameter is the number of teeth multiplied by the module;
To make gears I always use this http://www.thingiverse.com/thing:8077, there is a table, just edit the module and number of teeth;
The answer is negative because it was assumed -20 and +40, so it means the output has the same direction of -20 (CCW). Using right-hand, it would be +20 and -40, and the answer would be positive, again indicating same direction (CCW).
The model that you sent to me has a fixed internal gear but in my case...
Since the internal gear has a speed of 29.107 CCW, does it mean it also rotate too?
Sir, the variable "z" that you use in this photo in the # of teeth in gear, right? (In our class, we use "N")
To solve the gear ratio, you need to ratio from the start up to the last gear, so the formula is:
GR or e (w/c is Gear Train) = (- N1 / N4)*(N5 / N2)
N5/N2 is (-) because it is an internal gear, right?
So my e = (-17/28)*(15/60) = - 0.1518 :D
Sorry if I asked too many questions but:
- What Module/Diametral Pitch should I put in my gear since the given is only ? or can I put any value like P = 12?
- What is profile shift (w/c is shown in the excel file?) and
- Going back to my problem, how to solve the efficiency if E0 = 0.98? (What is E0? :O )