Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
4 Basic principles
4.1 Application
4.1.1 Scuffing
4.1.2 Wear
4.1.3 Micropitting
4.1.4 Plastic yielding
4.1.5 Particular categories
4.1.6 Specific applications
4.1.7 Safety factors
4.1.8 Testing
4.1.9 Manufacturing tolerances
4.1.10 Implied accuracy
4.1.11 Other considerations
4.1.12 Influence factors
4.1.13 Numerical equations
4.1.14 Succession of factors in course of calculation
4.1.15 Determination of allowable values of gear deviations
4.2 Tangential load, torque and power
4.2.1 Nominal tangential load, nominal torque and nominal
power
4.2.2 Equivalent tangential load, equivalent torque and
equivalent power
4.2.3 Maximum tangential load, maximum torque and maximum
power
5 Application factor K[A]
5.1 Method A - Factor K[A-A]
5.2 Method B - Factor K[A-B]
6 Internal dynamic factor K[v]
6.1 Parameters affecting internal dynamic load and calculations
6.1.1 Design
6.1.2 Manufacturing
6.1.3 Transmission perturbance
6.1.4 Dynamic response
6.1.5 Resonance
6.2 Principles and assumptions
6.3 Methods for determination of dynamic factor
6.3.1 Method A - Factor K[v-A]
6.3.2 Method B - Factor K[v-B]
6.3.3 Method C - Factor K[v-C]
6.4 Determination of dynamic factor using Method B: K[v-B]
6.4.1 Running speed ranges
6.4.2 Determination of resonance running speed (main
resonance) of a gear pair
6.4.3 Dynamic factor in subcritical range (N <= N[S])
6.4.4 Dynamic factor in main resonance range
(N[S] < <= 1,15)
6.4.5 Dynamic factor in supercritical range (N >= 1,5)
6.4.6 Dynamic factor in intermediate range (1,15 < N < 1,5)
6.4.7 Resonance speed determination for less common
gear designs
6.4.8 Calculation of reduced mass of gear pair with
external teeth
6.5 Determination of dynamic factor using Method C: K[v-C]
6.5.1 Graphical values of dynamic factor using Method C
6.5.2 Determination by calculation of dynamic factor
using Method C
7 Face load factors K[H beta] and K[F beta]
7.1 Gear tooth load distribution
7.2 General principles for determination of face load
factors K[H beta] and K[F beta]
7.2.1 Face load factor for contact stress K[H beta]
7.2.2 Face load factor for tooth root stress K [F beta]
7.3 Methods for determination of face load factor - Principles,
assumptions
7.3.1 Method A - Factors K[H beta-A] and K[F beta-A]
7.3.2 Method B - Factors K[H beta-B] and K[F beta-B]
7.3.3 Method C - Factors K[H beta-C] and K[F beta-C]
7.4 Determination of face load factor using Method B:
K[H beta-B]
7.4.1 Number of calculation points
7.4.2 Definition of K[H beta]
7.4.3 Stiffness and elastic deformations
7.4.4 Static displacements
7.4.5 Assumptions
7.4.6 Computer program output
7.5 Determination of face load factor using Method C:
K[H beta-C]
7.5.1 Effective equivalent misalignment F[beta y]
7.5.2 Running-in allowance y[beta] and running-in
factor chi[beta]
7.5.3 Mesh misalignment, f[ma]
7.5.4 Component of mesh misalignment caused by case
deformation, f[ca]
7.5.5 Component of mesh misalignment caused by shaft
displacement, f[be]
7.6 Determination of face load factor for tooth root stress
using Method B or C: K[F beta]
8 Transverse load factors K[H alpha] and K[F alpha]
8.1 Transverse load distribution
8.2 Determination methods for transverse load
factors - Principles and assumptions
8.2.1 Method A - Factors K[H alpha-A] and K[F alpha-A]
8.2.2 Method B - Factors K[H alpha-B] and K[F alpha-B]
8.3 Determination of transverse load factors using Method
B - K[H alpha-B] and K[F alpha-B]
8.3.1 Determination of transverse load factor by
calculation
8.3.2 Transverse load factors from graphs
8.3.3 Limiting conditions for K[H alpha]
8.3.4 Limiting conditions for K[F alpha]
8.3.5 Running-in allowance y[alpha]
9 Tooth stiffness parameters c' and c[gamma]
9.1 Stiffness influences
9.2 Determination methods for tooth stiffness
parameters - Principles and assumptions
9.2.1 Method A - Tooth stiffness parameters c'[A]
and c[gamma-A]
9.2.2 Method B - Tooth stiffness parameters c'[B]
and c[gamma-B]
9.3 Determination of tooth stiffness parameters c' and
c[gamma] according to Method B
9.3.1 Single stiffness, c'
9.3.2 Mesh stiffness, c[gamma]
Annex A (normative) Additional methods for determination
of f[sh] and f[ma]
Annex B (informative) Guide values for crowning and end
relief of teeth of cylindrical gears
Annex C (informative) Guide values for K[H beta-C] for
crowned teeth of cylindrical gears
Annex D (informative) Derivations and explanatory notes
Annex E (informative) Analytical determination of load
distribution
Bibliography