Accession Number : ADA309566

Title :   Computerized Design and Analysis of Face-Milled, Uniform Tooth Height, Low-Noise Spiral Bevel Gear Drives.

Descriptive Note : Final contractor rept.,

Corporate Author : CHICAGO UNIV IL

Personal Author(s) : Litvin, F. L. ; Zhao, X.

PDF Url : ADA309566

Report Date : JAN 1996

Pagination or Media Count : 82

Abstract : A new method for design and generation of spiral bevel gears of uniform tooth depth with localized bearing contact and low level of transmission errors is considered. The main features of the proposed approach are as follows: (1) The localization of the bearing contact is achieved by the mismatch of the generating surfaces. The bearing contact may be provided in the longitudinal direction, or in the direction across the surface; and (2) The low level of transmission errors is achieved due to application of nonlinear relations between the motions of the gear and the gear head-cutter. Such relations may be provided by application of a CNC machine. The generation of the pinion is based on application of linear relations between the motions of the tool and the pinion being generated. The relations described above permit a parabolic function of transmission errors to be obtained that is able to absorb almost linear functions caused by errors of gear alignment. A computer code has been written for the meshing and contact of the spiral bevel gears with the proposed geometry. The effect of misalignment on the proposed geometry has also been determined. Numerical examples for illustration of the proposed theory have been provided.

Descriptors :   *COMPUTER PROGRAMS, *COMPUTER AIDED DESIGN, *COMPUTER AIDED DIAGNOSIS, *GEARS, *GEAR TEETH, TOOLS, MOTION, DEPTH, ALIGNMENT, MESH, TRANSMITTANCE, SURFACES, LINEARITY, ERRORS, PARABOLAS, COMPUTER APPLICATIONS, MISALIGNMENT, HEIGHT, LOW NOISE.

Subject Categories : Computer Programming and Software
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE