In order to repair the damaged involute external gear, the diameter Da = 200.84mm, the gear z = 65, the full tooth height h = 6.60mm, the main parameters m, D, Da, DF and DB of the gear are determined

"Mechanical design manual" Chapter 13 gear, which has the corresponding gear parameters, if you are learning mechanical design, I suggest you check it yourself, only you can learn things by yourself, I can help you work out, but you know the answer, do not know what the process is useful!

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1. How to understand the gear involute equation of proe r = 36 theta = t * 45 x = R * cos (theta) + R * sin (theta) * theta * pi / 180 y = R * sin (th)
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11. Function of involute equation parameters of gears The two equations are as follows: Fang Chengyi angle=t*45 x=r*cos(angle)+pi*r*angle*sin(angle)/180 y=r*sin(angle)-pi*r*angle*cos(angle)/180 z=0 Fang Chenger afa=60*t x=r*cos(afa)+pi*r*afa/180 * sin(afa) y=r*sin(afa)-pi*r*afa/180 * cos(afa) z=0 In the two equations, angle = t * 45 and AFA = 60 * t are used to adjust the length of the involute, but the shape of the involute, that is, the shape of the gear, is unchanged, only the extension length of the involute is changed: if the value is set smaller, it may appear that the involute can not intersect the addendum circle, but the shape of the involute remains unchanged after changing the value?
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14. The standard equation of parabola with focus f (0, - 4) is?
15. The distance from the focus to the collimator is 5, and the parabolic standard equation is solved RT.
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