Browsing by Author "FONG, ZH"

Now showing 1 - 6 of 6

A MATHEMATICAL-MODEL FOR THE TOOTH GEOMETRY OF CIRCULAR-CUT SPIRAL BEVEL GEARS
(1991-06-01)
FONG, ZH
;
TSAY, CB
;
交大名義發表
;
機械工程學系
;
National Chiao Tung University
A complete tooth geometry of the circular-cut spiral bevel gears has been mathematically modeled. The mathematical model has been divided into several independent modules, each representing an individual kinematic relation or tool-setting, with examples included. A comparison with the spiraloid model has also been made in this paper. The mathematical model can be applied to simulate and calculate the tooth profiles for the Duplex Method, Helical Duplex Method, Formate Method, and Modified Roll Method for circular-cut spiral bevel gears. It can also be applied to the computer numerical controlled (CNC) machining, computer-aided finite element stress analysis, and tooth contact analysis (TCA) for the spiral bevel gear.
A STUDY ON THE TOOTH GEOMETRY AND CUTTING MACHINE MECHANISMS OF SPIRAL BEVEL GEARS
(1991-09-01)
FONG, ZH
;
TSAY, BCB
;
交大名義發表
;
機械工程學系
;
National Chiao Tung University
The tooth geometry and cutting machine mechanisms of spiral bevel gears are investigated. Based on the kinematics of tilted head cutter, machine cradle, sliding base and work head, the matrix presentation of spiral bevel gear's tooth geometry are developed. The relations between the parameters of the proposed mathematical model and the machine settings of existing spiral bevel gear cutting machines are also investigated. The tilt of head cutter axis, motion of generation, helical motion of sliding base, and nongenerating cutting of spiral bevel gears are taken into consideration. An example is given to illustrate the application of the proposed mathematical model.
COMPUTER-SIMULATION AND STRESS-ANALYSIS OF HELICAL GEARS WITH PINION CIRCULAR ARC TEETH AND GEAR INVOLUTE TEETH
(1991)
TSAY, CB
;
FONG, ZH
;
交大名義發表
;
機械工程學系
;
National Chiao Tung University
THE MATHEMATICAL-MODEL OF WILDHABER-NOVIKOV GEARS APPLICABLE TO FINITE-ELEMENT STRESS-ANALYSIS
(1989)
TSAY, CB
;
FONG, ZH
;
TAO, S
;
機械工程學系
;
Department of Mechanical Engineering
THE UNDERCUTTING OF CIRCULAR-CUT SPIRAL BEVEL GEARS
(1992-06-01)
FONG, ZH
;
TSAY, CB
;
交大名義發表
;
機械工程學系
;
National Chiao Tung University
Undercutting is a serious problem in designing spiral bevel gears with small numbers of teeth. Conditions of undercutting for spiral bevel gears vary with the manufacturing methods. Based on the theory of gearing [1], the tooth geometry of the Gleason type circular-cut spiral bevel gear is mathematically modeled. The sufficient and necessary conditions for the existence and regularity of the generated gear tooth surfaces are investigated. The conditions of undercutting for a circular-cut spiral bevel gear are defined by the sufficient conditions of the regular gear tooth surface. The derived undercutting equations can be applicable for checking the undercutting conditions of spiral bevel gears manufactured by the Gleason Duplex Method, Helical Duplex Method, Fixed Setting Method, and Modified Roll Method. An example is included to illustrate the application of the proposed undercut checking equations.
TOOTH CONTACT ANALYSIS FOR HELICAL GEARS WITH PINION CIRCULAR ARC TEETH AND GEAR INVOLUTE SHAPED TEETH
(1989-06-01)
TSAY, CB
;
FONG, ZH
;
交大名義發表
;
機械工程學系
;
National Chiao Tung University