Gear Flank Modification Using a Variable Lead Grinding Worm Method on a Computer Numerical Control Gear Grinding Machine

被引:32
作者
Fong, Zhang-Hua [1 ,2 ]
Chen, Gwan-Hon [3 ]
机构
[1] Natl Chung Cheng Univ, Mech Engn, 168 Univ Rd, Min Hsiung 621, Chia Yi, Taiwan
[2] Natl Chung Cheng Univ, 168 Univ Rd, Min Hsiung 621, Chia Yi, Taiwan
[3] Natl Chung Cheng Univ, Dept Mech Engn, 168 Univ Rd, Min Hsiung 621, Chia Yi, Taiwan
关键词
TOOTH CONTACT ANALYSIS; HELICAL GEAR; SPUR; HOB;
D O I
10.1115/1.4033919
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Tooth crowning of a ground helical gear is usually done by adjusting the radial feed with respect to the axial feed of the grinding worm on the modern CNC gear grinding machine. However, when the amount of crowning and the helical angle of the gear are large, this method always results in a twisted tooth flank. Hence, in this paper, we propose a tooth flank crowning method for helical gears, which uses a diagonal (combined tangential and axial) feed on a grinding machine with a variable lead grinding worm (VLGW) obtained by adjusting the axial feed of the dressing disk with respect to the rotation angle of the grinding worm. Since all the required corrective motions for the proposed VLGW method are existing CNC controlled axes on modern gear grinding machines, it can easily be implemented without extra cost to modify the grinder hardware. Three numerical examples are presented to show the validation of the proposed method and its ability to reduce tooth flank twist even in the case of a large helical angle, with a particularly significant reduction on a crowned helical gear.
引用
收藏
页数:10
相关论文
共 20 条
[1]  
Chen K.-H., 2009, CHIN SOC MECH MACH T, P154
[2]  
Dudley D. W., 2011, DUDLEYS GEAR HDB DES, V2nd
[3]   Tooth contact analysis for helical gear pairs generated by a modified hob with variable tooth thickness [J].
Hsu, Ruei-Hung ;
Su, Hsien-Hsiu .
MECHANISM AND MACHINE THEORY, 2014, 71 :40-51
[4]  
Iwase Y., 1996, JSAE REV, V17, P191
[5]   High-order tooth flank correction for a helical gear on a six-axis CNC hob machine [J].
Jiang, Jinke ;
Fang, Zongde .
MECHANISM AND MACHINE THEORY, 2015, 91 :227-237
[6]  
Lange, 2009, AGMA FALL TECHN M, P47
[7]  
Liebherr, 2015, CNC GEN PROF GRIND M, P3
[8]  
Litvin F.L, 2001, U.S. Patent, Patent No. [US6205879B1, 6205879]
[9]  
Litvin Faydor L., 2004, Gear Geometry and Applied Theory, V2nd
[10]   CROWNED SPUR GEARS - METHODS FOR GENERATION AND TOOTH CONTACT ANALYSIS .2. GENERATION OF THE PINION TOOTH SURFACE BY A SURFACE OF REVOLUTION [J].
LITVIN, FL ;
ZHANG, J ;
HANDSCHUH, RF .
JOURNAL OF MECHANISMS TRANSMISSIONS AND AUTOMATION IN DESIGN-TRANSACTIONS OF THE ASME, 1988, 110 (03) :343-347