GEAR DESIGN Part VI HAUSING DESIGN Prof Dr

GEAR DESIGN Part VI (HAUSING DESIGN) Prof. Dr. Mohamed Omar Mousa El-Minia University Prod. & Mech. Design Dept. Prof. Dr. Mohamed Omar Mousa April 2006

Gear box housing have many functions which can be drawn from the figure and summarized as follows: 1. Lubricant carrier. 2. Bearings mounting. 3. Fixation to base. 4. Oil level indication. Prof. Dr. Mohamed Omar Mousa April 2006

Design of gear box housing means determine the following parameters: b 1. Thickness of housing wall ( ). 2. Thickness of housing cover wall ( 1). 1 b 1 3. Thickness of housing upper flange (b). 4. Thickness of housing cover flange (b 1). Prof. Dr. Mohamed Omar Mousa April 2006

5. Thickness of housing lower flange (P). 6. Thickness of ribs of housing and cover (m) 7. Diameter of foundation bolts (df). 8. Diameter of bolts near bearings (d 1). df P m m d 1 d 2 9. Diameter of bolts connecting cover to base (d 2). Prof. Dr. Mohamed Omar Mousa April 2006

10. Diameter of bearing cover bolts (d 3). 11. Distance from housing wall to foundation bolt axis (C ). 12. Width of lower flange (K). K d 3 13. Width of upper flange (K 1). Prof. Dr. Mohamed Omar Mousa K 1 C April 2006

Dimensions of housing parameters can be taken from empirical formula. The housing parameters can be classified into the following main groups: 1. Wall thicknesses. 2. Bolt diameters. 3. Safety distances. The wall thicknesses include: - Base housing wall thickness. - Cover housing wall thickness. - Ribs thicknesses. The bolt diameters include: - Diameter of foundation bolt. - Diameter of bolts near the bearings. - Diameter of cover connecting bolts. Prof. Dr. Mohamed Omar Mousa April 2006

DIMENSIONS OF THE WALL THICKNESSES 1. Thickness of housing base walls ( ) A Where, ‘A’ is the maximum shafts center line distance. Prof. Dr. Mohamed Omar Mousa April 2006

2. Thickness of housing cover wall ( 1). 1 A Where, ‘A’ is the maximum shafts center line distance. > 1 Prof. Dr. Mohamed Omar Mousa April 2006

3. Thickness of housing upper & cover flange (b). b b 1 Where, ‘ ’ is the base wall thickness. Prof. Dr. Mohamed Omar Mousa April 2006

4. Thickness of housing lower flange (base) (p). p Where, ‘ ’ is the base wall thickness. Prof. Dr. Mohamed Omar Mousa April 2006

5. Thickness of ribs (m). m Where, ‘ ’ is the base wall thickness. Prof. Dr. Mohamed Omar Mousa April 2006

BOLTS DIAMETERS 1. Diameter of foundation bolts (df) df A Where, ‘A’ is the maximum shafts center line distance. Prof. Dr. Mohamed Omar Mousa April 2006

2. Diameter of bolts near bearings (d 1) d 1 Prof. Dr. Mohamed Omar Mousa April 2006

3. Diameter of bolts connecting base & cover (d 2) d 2 Prof. Dr. Mohamed Omar Mousa April 2006

4. Diameter of bearing cover bolts (d 3) d 3 Prof. Dr. Mohamed Omar Mousa April 2006

DISTANCES 1. Distance from housing wall to foundation bolt C Prof. Dr. Mohamed Omar Mousa April 2006

2. Distance from housing wall to axis of bolts near bearing (e 1) 2. Distance from housing wall to axis of bolts connecting base & cover (C 1) e 1 C 1 Prof. Dr. Mohamed Omar Mousa April 2006

Width of lower flange (K) K K Where, Prof. Dr. Mohamed Omar Mousa April 2006

Width of upper flange (K 1) K 1 Where, Prof. Dr. Mohamed Omar Mousa April 2006

EN D Prof. Dr. Mohamed Omar Mousa April 2006