A semi-analytical model for cutting force prediction in face-milling of spiral bevel gears

2021 ◽  
Vol 156 ◽  
pp. 104165 ◽  
Author(s):  
Fangyan Zheng ◽  
Xinghui Han ◽  
Lin Hua ◽  
Rulong Tan ◽  
Weiqing Zhang
Keyword(s):  
Cutting Force ◽  
Analytical Model ◽  
Face Milling ◽  
Cutting Force Prediction ◽  
Spiral Bevel Gears ◽  
Force Prediction ◽  
Bevel Gears ◽  
Spiral Bevel

Spiral Bevel Gears CNC Milled by Disc Cutter with Concave End

2013 ◽  
Vol 415 ◽  
pp. 636-641
Author(s):  
Xiao Zhong Deng ◽  
Geng Geng Li ◽  
Bing Yang Wei
Keyword(s):  
Face Milling ◽  
Strip Width ◽  
Disc Cutter ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Tooth Surfaces ◽  
Cutter Orientation ◽  
End Mills ◽  
Spiral Bevel ◽  
Yaw Angle

In order to solve the small cutting strip width and poor surface quality problems when spiral bevel gears are CNC machined by ball-end mills£¬a machining method of face milling spiral bevel gears by using a disc cutter with a concave end is presented. Based on the researches of spiral bevel gears geometry structure, through a bigger diameter disc cutter with a concave end selected, the setting order of cutter orientation angles changed, and the functions of cutter tilt and yaw angle separated, tooth surfaces machined with big cutting strip width and no bottom land gouge can be expected. Finally, taking a spiral bevel gear pair as an example, through machining and measurement experiments, the method feasibility and correctness are verified

The fundamental roughness model for face-milling spiral bevel gears considering run-outs

2019 ◽  
Vol 156 ◽  
pp. 272-282 ◽  
Author(s):  
Fangyan Zheng ◽  
Mingde Zhang ◽  
Weiqing Zhang ◽  
Rulong Tan ◽  
Xiaodong Guo
Keyword(s):  
Face Milling ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Roughness Model ◽  
Spiral Bevel

An Investigation on the Design of Formate and Generate Face Milled Hypoid Gears

2020 ◽  
Author(s):  
Tufan Gürkan Yılmaz ◽  
Onur Can Kalay ◽  
Fatih Karpat ◽  
Mert Doğanlı ◽  
Elif Altıntaş
Keyword(s):  
Power Transmission ◽  
Face Milling ◽  
Tool Geometry ◽  
Hypoid Gear ◽  
Mathematical Equation ◽  
Spiral Bevel Gears ◽  
Hypoid Gears ◽  
Bevel Gears ◽  
Milling Method ◽  
Spiral Bevel

Abstract Hypoid gears are transmission elements that transfer power and moment between shafts whose axes do not intersect. They are similar in structure to spiral bevel gears. However, there are many advantages compared to spiral bevel gears in terms of load carrying capacity and rigidity. Hypoid gear pairs are mostly used as powertrain on the rear axles of cars and trucks. Hypoid gears are manufactured by two essential methods called face-milling and face-hobbing, and there are mainly two relative kinematic movements (Formate® and Generate). In this study, the gears produced with the Face-milling method are discussed. Face milled hypoid gears can be manufactured with both Formate® and Generate, while pinions can only be manufactured with the Generate method. The most crucial factor that determines the performance of hypoid gears is the geometry of hypoid gears. The gear and pinion geometry is directly dependent on the tool geometry, machine parameters, and relative motion between the cradle and the workpiece. The gear geometry determines the contact shape and pressure during power transmission. In this study, the mathematical equation of the cutting tool is set. After that, using differential geometry, coordinate transformation, and the gearing theory, the mathematical equation of hypoid gear is obtained.

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.

The Research on Milling Forces of Dry Cutting Spiral Bevel Gears

2011 ◽  
Vol 697-698 ◽  
pp. 213-217
Author(s):  
Qing Li ◽  
C.J. Liao ◽  
Run Wang
Keyword(s):  
Mathematical Models ◽  
Cutting Force ◽  
High Speed ◽  
Dry Milling ◽  
Dry Cutting ◽  
Spiral Bevel Gears ◽  
High Speed Cutting ◽  
Bevel Gears ◽  
Spiral Bevel ◽  
Milling Forces

Based on the high-speed cutting theory, high-speed dry milling processes of spiral bevel gears are studied and mathematical models of milling forces are established in this paper. This paper analyzes variation trend of high-speed cutting force and puts forward the notion of non-constant feed cutting according to specific cutting process, so that the purpose of lowing the maximum main cutting force and reducing the fluctuation of cutting force can be achieved.

Research on the cutting dynamics for face-milling of spiral bevel gears

2021 ◽  
Vol 153 ◽  
pp. 107488
Author(s):  
Fangyan Zheng ◽  
Xinghui Han ◽  
Hua Lin ◽  
Wanhua Zhao
Keyword(s):  
Face Milling ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Spiral Bevel
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