Calculating duel idler gear centres
Calculating duel idler gear centres
(OP)
thread406-347690: Dual Idler Gears
Hello everyone
I am stuck with the same problem that 61Lat (thread406-347690: Dual Idler Gears) had calculating the centre distance between the input and output gears in a duel idler gear train. Does anyone have the formulas to calculate them? mfgengear and gearguru said they had the answer, not sure what I’m missing but I can’t seem to find them in the thread. I understand that the belt length (red line) must be divisible by the pitch but cant see how I can use that to calculate the centres. Any help?
Hello everyone
I am stuck with the same problem that 61Lat (thread406-347690: Dual Idler Gears) had calculating the centre distance between the input and output gears in a duel idler gear train. Does anyone have the formulas to calculate them? mfgengear and gearguru said they had the answer, not sure what I’m missing but I can’t seem to find them in the thread. I understand that the belt length (red line) must be divisible by the pitch but cant see how I can use that to calculate the centres. Any help?





RE: Calculating duel idler gear centres
RE: Calculating duel idler gear centres
RE: Calculating duel idler gear centres
RE: Calculating duel idler gear centres
RE: Calculating duel idler gear centres
b.) When you do e.g. angle = asin(x/y) in Mathcad, the result is in radians. So I convert it into degrees to use in the formula below.
RE: Calculating duel idler gear centres
The arrangement you describe is a "torque split" gear mesh. Here is a short tech paper that provides an analytical solution for your case in section 3.3 .
As I noted above, obtaining satisfactory load sharing between the idlers can be quite difficult, so I'd highly recommend reading section 4 of the paper.
Regards,
Terry
RE: Calculating duel idler gear centres
Thanks for the tech paper Terry I have been worried about the load sharing and this will be a great help in resolving that.
Regards
Peter
RE: Calculating duel idler gear centres
RE: Calculating duel idler gear centres
RE: Calculating duel idler gear centres
RE: Calculating duel idler gear centres
Out of curiosity, what approach will you use to establish the operating torque split between the two idler gears? Will you strain gauge the gears?
RE: Calculating duel idler gear centres