ANSI AGMA 2008-C01:2001(R2008).Assembling Bevel Gears.
ANSI AGMA 2008-C01 applies to the assembly of all bevel gears.
The term bevel gears is used to mean straight. spiral. and hypoid gear designs. If data pertain to one or more but not all, the specific forms are identified.
The standard provides the following:
(1) A better understanding of the need for correct
positioning of bevel gears.
(2) Information necessary for correct assembly and positioning of bevel gears in their respective housings.
(3) Information for methods personnel in establishing detailed assembly procedures for specific applications.
(4) Information for Tooling personnel responsible for equipping an assembly department with the tools and gages necessary for proper assembly.
(5) Instruction to Assembly personnel for obtaining tooth contact patterns, for interpreting the tooth contact patterns, and for adjusting the position of the members to change the tooth contact patterns.
This Manual applies to the assembly of all bevel gears. While certain design considerations and development techniques are mentioned to clarify different aspects, this Manual is not intended as a design guide. It is prepared on the assumption that gears and mountings are designed in accordance with Standard AGMA 2005— 88. Design ManualforBe’ve! Gears.
2. Terms and Definitions
The terms defined in this section are used in subsequent sections of this Manual. The definitions are provided for the assembly or service personnel as an aid in the assembly and visual inspection of the parts. Therefore, they may differ somewhat from the gear engineering definitions which appear in Standard AGMA 112.04, Nomenclature (Geometry) Ternis, Definitions, Symbols, and Abbreviations.
Bevel gear nomenclature used throughout the standard is illustrated in Figs 2—1, 2—2, 2—3, and2—4.
Back Angle is the angle between the back COflC element and a perpendicular to the gear axis. See Fig 2—1.
Backlash, in an assembled gear set, is the clearance or play between the teeth of the meshing gears. Backlash may he determined by holding the shaft of one member fixed and rotating the shaft of the mate in each direction. This is usually measured at the pitch diameter as a linear distance.
Backlash, Normal is backlash measured along a line perpendicular to the tooth surface.
Backlash, Transverse is backlash measured in the direction of the rotation of the tooth.
Bevel Gear Testing Machine is a machine used to check the tooth contact pattern of a pair of bevel gears while operating at light load at any specific mounting position. If necessary, the gears can he displaced in the machine from their mounting position, the amount of displacement can he measured, and the effect of the displacement Ofl the contact can he evaluated.ANSI AGMA 2008-C01 pdf download.