Chap 5.1 Introduction(4) Gears for connecting intersecting shafts 1. Straight bevel gears 2. Spiral bevel gears
Gears for connecting intersecting shafts 1. Straight bevel gears 2. Spiral bevel gears Chap.5.1 Introduction(4)
Chap 5.1 Introduction(5) Neither parallel nor intersecting shafts 1. Crossed-helical gears 4 2. Hypoid gears 3. Worm and worm gear
Neither parallel nor intersecting shafts 1. Crossed-helical gears 2. Hypoid gears 3. Worm and worm gear Chap.5.1 Introduction(5)
Chap. 5.2 The fundamental law of gearing 1. The Fundamental Law of Gearing 2. The involute tooth form 3. Pressure angle 4. Changing center Distance 5. Backlash
Chap.5.2 The fundamental law of gearing 1. The Fundamental Law of Gearing 2. The Involute Tooth Form 3. Pressure Angle 4. Changing Center Distance 5. Backlash
Chap, 5.2 The fundamental law of gearing(1) 1. The Fundamental Law of Gearing Tooth profile 1 drives tooth profile 2 by acting at the instantaneous contact point K. N,N, is the common normal of the two profiles velocities V, and v, at point K, along N, n, are equal in both magnitude and direction otherwise the two tooth profiles would separate from each other. ON O=O2N2 O2
Chap.5.2 The fundamental law of gearing(1) ▪ Tooth profile 1 drives tooth profile 2 by acting at the instantaneous contact point K. ▪ N1N2 is the common normal of the two profiles. ▪ velocities V1 and V2 at point K, along N1N2 are equal in both magnitude and direction. Otherwise the two tooth profiles would separate from each other. 1. The Fundamental Law of Gearing 1 1 1 2 2 2 O N = O N