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Design 4 - Bevel Gear
written 5.4 years ago by gravatar for yashbeer yashbeer ★ 11k
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written 5.4 years ago by gravatar for yashbeer yashbeer ★ 11k

A pair of bevel gear is required to transmit 8 kW power from a pinion shaft rotating at 400 $\mathrm{rpm}$ with reduction ratio $3.5 .$ The shaft angle is $90^{\circ}$ and drive is subjected to moderate shock and operates at 12 hrs/day. Design stresses for pinion are 380 $\mathrm{MPa}$ and 1100 $\mathrm{MPa}$. Design and check pair in strength and wear and also perform arm design.

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Step 1 Given data single stage bevel gear box, Power $(\mathrm{Pm})=8 \mathrm{k} \mathrm{W}, \mathrm{N}_{1}= 400 \mathrm{rpm}, \mathrm{i}=3.5, \theta=90^{\circ},$ design criteria- Bending strength, checking criteria- wear, moderate shock and operates at 12 hrs / day $\left[\sigma_{b}\right]=380 \mathrm{MPa},\left[\sigma_{c}\right]=1100 \mathrm{MPa}$
Step 2 Assumptions '1' or 'p'-driver (pinion) and '2' or 'g'-driven (gear), external meshing, closed structure, commercially cut gears, using load and duty factor=1.5, module-m, face width (b)=10m, FDI profile

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