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written 5.4 years ago by
yashbeer
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The table shows the constructional details recommended for gear blanks. It depends on the pitch circle diameter (PCD) of pinion or gear.
| Type | Diagram | PCD Range | Design |
|---|---|---|---|
| Integral Type |  |
upto 100mm | .1. similar material as that of pinion or gear 2. $[\tau]=\left[\sigma_{b}\right] / 2$ 3. Torque $=T=\pi \tau d_{s}^{3} / 16$ 4. $d_{s^{-}}$ shaft diameter 5. simple construction 6. suitable for low loads |
| Disc Type |  |
101 to 200mm | .1. may have similar material as that of pinion or gear 2. $[\tau]=\left[\sigma_{b}\right] / 2$ 3. Torque $=T=\pi \tau d_{s}^{3} / 16$ 4. $d_{s}$ - shaft diameter 5. shaft and key to be designed 6. suitable for moderate loads |
| Arm type |  |
400mm | .1. May have similar material as that of pinion or gear 2. $[\tau]=\left[\sigma_{b}\right] / 2$ 3. Torque $=T=\pi \tau d_{s}^{3} / 16$ 4. elliptical arm selected $(b=2 a)$ 5. M $=T=\pi \sigma_{b} a^{3} n / 32$ $\quad$ n-no. of arms $\quad$n-no. of arms 6. shaft, key, arm to design 7. suitable for heavy loads |
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