scholarly journals Application of Computer Aided Process Design in CNC Machining of Spiral Bevel Gears

2016 ◽  
Vol 9 (9) ◽  
pp. 171-180
Author(s):  
Zhu Xiurong ◽  
Liu Yang ◽  
Ding Dapeng ◽  
Sun Zhijie
Keyword(s):  
Process Design ◽  
Cnc Machining ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Computer Aided ◽  
Spiral Bevel

Designing and Manufacturing Spiral Bevel Gears Using 5-Axis Computer Numerical Control (CNC) Milling Machines

2013 ◽  
Vol 135 (2) ◽  
Author(s):  
Joël Teixeira Alves ◽  
Michèle Guingand ◽  
Jean-Pierre de Vaujany
Keyword(s):  
Manufacturing Process ◽  
Computer Aided Design ◽  
Bevel Gear ◽  
Numerical Control ◽  
Spiral Bevel Gear ◽  
Milling Machine ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Computer Aided ◽  
Spiral Bevel

The design of spiral bevel gears remains complex since tooth geometry and the resulting kinematic performance stem directly from the manufacturing process. Spiral bevel gear cutting up to now has relied on the works of several manufacturers. Recent advances in milling machine technology and computer aided manufacturing (CAM) now make it possible to manufacture good quality spiral bevel gears on a standard 5-axis milling machine. This paper describes the computer aided design (CAD) definition and manufacturing of spiral bevel gear tooth surfaces. Process performance is assessed by comparing the resulting surfaces after machining with the predefined CAD surfaces. This manufacturing process makes it possible to obtain geometry analytically, making design easier than with standard spiral bevel gears.

A Mathematical Model for the Tooth Geometry of Circular-Cut Spiral Bevel Gears

1991 ◽  
Vol 113 (2) ◽  
pp. 174-181 ◽  
Author(s):  
Z. H. Fong ◽  
Chung-Biau Tsay
Keyword(s):  
Mathematical Model ◽  
Cnc Machining ◽  
Tooth Contact Analysis ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Finite Element Stress Analysis ◽  
Tool Setting ◽  
Spiral Bevel ◽  
The Mathematical Model ◽  
Made In

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.

Comparison of Simulations and Experiments of Loaded Spiral Bevel Gears Behavior

2015 ◽  
Author(s):  
Joël Teixeira Alves ◽  
J. P. de Vaujany ◽  
M. Guingand
Keyword(s):  
Numerical Model ◽  
Computer Aided Design ◽  
Test Bench ◽  
Logarithmic Spiral ◽  
Transmission Error ◽  
Milling Machine ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Computer Aided ◽  
Spiral Bevel

The design of spiral bevel gears is still very complex because tooth geometry and thus kinematics performance depend on the manufacturing process of this type of gear. The cutting process is dominated by two major manufacturers: Gleason and Klingelnberg. The shape of the teeth surfaces are governed by a large number of programmed machine settings, so they cannot be optimized intuitively. Due to the progress made during the last decade by CNC machines and CAM (Computer Aided Manufacturing) softwares, it is now possible to manufacture spiral bevel gears with quite good quality on a 5-axis milling machine. In a previous study, the authors presented a numerical model for calculating the quasi-static load sharing of spiral bevel gears. Two kinds of geometries were developed: a simplified Gleason type, and a geometry based on classical spherical involutes combined with a logarithmic spiral. After being generated using a CAD (Computer-Aided Design) software, these two geometries were manufactured with a 5-axis milling machine controlled by CAM software. A metrological study showed that manufacturing by a 5-axis milling machine can be an alternative to conventional cutting methods. The aim of the present paper is to validate the numerical model. To reach this goal, a test bench was designed to measure the loaded transmission error and visualize the contact patterns. The test bench is integrated inside a numerical 3-axis milling machine: the pinion is mounted on the spindle, while the base of the bench is clamped on its plate. Thus assembly errors can be imposed easily and accurately. Measured and simulated transmission errors are then compared for different axis misalignments cases.

Polishing of Large-Sized Spiral Bevel Gears Using Radial Bristle Brush

2017 ◽  
Vol 873 ◽  
pp. 48-53
Author(s):  
Kazumasa Kawasaki ◽  
Isamu Tsuji
Keyword(s):  
Surface Roughness ◽  
Cnc Machining ◽  
Numerical Control ◽  
Tooth Surface ◽  
Poly Vinyl Alcohol ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Tool Mark ◽  
Tooth Surfaces ◽  
Spiral Bevel

A machining method of large-sized spiral bevel gears in cyclo-palloid system has been developed using a computer numerical control (CNC) machining center. As a result of trial machining, the tooth surfaces were rough and leprous tool mark occurred. Therefore, the tooth surfaces were polished using a poly-vinyl alcohol (PVA) elastic grindstone after machining in order to improve the surface roughness and the occurrence of leprous tool mark. However, the wear and clogging of the elastic grindstone occurred after polishing. In this paper, the tooth surfaces of the large-sized spiral bevel gears are polished using a radial bristle brush instead of a PVA elastic grindstone. The swarf cutting that was machined by the side of a tool was carried out in polishing in order to make the life of the radial bristle brush. After polishing, the tooth surface was observed and the surface roughness was measured. Afterwards, the surface roughness and the occurrence of leprous tool mark before and after polishing were compared. As a result, the surface roughness and the occurrence of leprous tool mark were improved.

scholarly journals 5-axis double-flank CNC machining of spiral bevel gears via custom-shaped milling tools — Part I: Modeling and simulation

2020 ◽  
Vol 62 ◽  
pp. 204-212 ◽  
Author(s):  
Pengbo Bo ◽  
Haizea González ◽  
Amaia Calleja ◽  
Luis Norberto López de Lacalle ◽  
Michael Bartoň
Keyword(s):  
Modeling And Simulation ◽  
Cnc Machining ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Spiral Bevel ◽  
Milling Tools

Generation of Noncircular Spiral Bevel Gears by Face-Milling Method

2016 ◽  
Vol 138 (8) ◽  
Author(s):  
Fangyan Zheng ◽  
Lin Hua ◽  
Dingfang Chen ◽  
Xinghui Han
Keyword(s):  
Face Milling ◽  
Cnc Machining ◽  
Tooth Surface ◽  
Free Form ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Tooth Surfaces ◽  
Milling Method ◽  
Spiral Bevel ◽  
Crown Gear

Noncircular bevel gears are applied in variable-speed transmissions with intersecting axes. Since dedicated machines for manufacturing noncircular bevel gears are not available, noncircular bevel gears are normally manufactured using universal computer numerically controlled (CNC) machining centers, resulting in poor productivity. This paper describes a face-milling method for generation of noncircular spiral bevel gears, which is analogous to the generation of spiral bevel and hypoid gears using CNC hypoid gear generators, such as Gleason free-form hypoid generators. As a result, the productivity is significantly improved. Based on the theory of gearing, this paper first describes the basic concept of generation of conjugate noncircular spiral bevel gears. Generation of the tooth surfaces using crown-gear generation concept is analytically discussed with association to the face-milling process of generation of the proposed noncircular spiral bevel gears. The tooth surface geometries are represented by the position vectors and normals. The kinematical model of free-form machines is developed. The machine motion parameters are determined based on the theoretically defined tooth surfaces using the crown-gear generation concept. The developed method is verified by manufacturing a real pair of noncircular spiral bevel gears with satisfactory contact patterns which agree well with those modeled using a commercial cae software program.

Research on the NC Machining and Simulation for Spiral Bevel Gears of Half-Spread-Out Helix Modified Roll

2018 ◽  
Vol 939 ◽  
pp. 63-72
Author(s):  
Xi Ning Jiang ◽  
Yue Hai Sun ◽  
Xiao Hu Xie
Keyword(s):  
Cnc Machining ◽  
Numerical Control ◽  
Tooth Surface ◽  
Numerical Control Machining ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Machining Center ◽  
New Type ◽  
Spiral Bevel ◽  
Five Axis

A new type of machining method called half-spread-out helix modified roll is used to carry out numerical control machining and simulation of spiral bevel gears in this paper. The transformation from traditional machine tool adjustment parameters into processing input parameters of five-axis CNC machining center was realized. The simulated gear model of this machining method is obtained, and the coordinates of its tooth surface points are compared with points coordinates of theoretical tooth surface which are generated according to the traditional machining method. From the comparison, the correctness of this numerical control machining model is verified.

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