Worm Gear with Worm Bottom Arrangement - Drawings

Contents

1. Motor selection and kinematic calculation

2. Gearbox calculation

3. Predesign of waves of a reducer and designing of a worm and worm wheel

4. Gearbox housing structural dimensions

5. Bearing durability check

6. Calculation of chain transmission parameters

7. Heat calculation of reduction gear box

8. Test of key joints strength

9. Refined Shaft Calculation

10. Selection of gearbox part fits

11. Choice of oil grade

List of literature

10 Fitting of gear box parts.

Install worm wheel on H7/p6 shaft.

Landing of chain drive sprocket on H7/h6 reduction gear shaft.

Journals of shafts for bearings are made with deviation of shaft k6. Deviations of openings in the case under external rings on H7.

Landing of the bronze crown on the steel center H7/p6.

11 Choice of oil grade.

Lubrication of engagement and bearings is performed by spraying of liquid oil. According to the tables, we establish the viscosity of the oil. At contact stresses Ϭn = 149 MPa and sliding speed Vs = 6.4 m/s, the recommended oil viscosity should be approximately 15· 106 m2/s. We take aviation oil MS22.

Bearing chambers are filled with plastic lubricant UT1, periodically replenish it with a syringe through press-lubricants.