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Mesh theory of angle modified dual tori double-enveloping toroidal worm drive 被引量:4
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作者 ZHAO YaPing1, SU DaiZhong2, ZHANG Zhao1, WEI WenJun3 & DONG XueZhu3 1 College of Machinery and Automation, Wuhan University of Science and Technology, Wuhan 430081, China 2 Advanced Design and Manufacturing Engineering Center, Nottingham Trent University, Nottingham NG1 4BU, UK 3 College of Engineering, China Agricultural University, Beijing 100083, China 《Science China(Technological Sciences)》 SCIE EI CAS 2010年第7期1913-1927,共15页
In this paper, the meshing theory of the angle modified hourglass worm drive is enriched and developed. The ordinary condition of the angle modification is derived and the physical significance of the modification is ... In this paper, the meshing theory of the angle modified hourglass worm drive is enriched and developed. The ordinary condition of the angle modification is derived and the physical significance of the modification is interpreted. A normal section methodology is proposed for meshing analysis, which can be used to compute the normal distance near a singular meshing point of a conjugate surface couple. By means of the method and after analyzing the normal transversals, it is specified that the worm helicoid, the nominal former contact zone and the new contact zone intersect each other along the locus of singular points of the instantaneous contact lines of an angle-modified worm pair. As a result, it is explained clearly that those three osculate each other but the osculations are different in degree. Moreover, the mechanism of removing the twice-contacted zone from the worm gear tooth surface is clarified and the reason of shortening the worm working length is also elucidated. With the help of the theory described in the present paper and the thorough and systematic research on the relevant meshing characteristics, the angle modified dual tori double-enveloping toroidal worm drive has been shown to be an excellent new-fashioned hourglass worm set. 展开更多
关键词 HOURGLASS WORM ANGLE modification double-enveloping osculation normal TRANSVERSAL
原文传递
Contact analysis and load distribution of double-envelop hourglass worm gearing affected by errors and load
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作者 徐戊矫 《Journal of Chongqing University》 CAS 2003年第2期1-5,共5页
An approach for the contact analysis and load distribution of double-envelop hourglass worm gearing is presented, which is based on a 3-D elastic contact finite element method (FEM) model that accommodates the influen... An approach for the contact analysis and load distribution of double-envelop hourglass worm gearing is presented, which is based on a 3-D elastic contact finite element method (FEM) model that accommodates the influence of errors and load. As compared with existing tooth contact analysis model that assumes rigidity for the contacting surfaces, the proposed model provides a more realistic analysis on the contact patterns, the distribution of contact load and transmission errors. It is also capable of exploring the influence of different errors on meshing performances, the contact deformation, the shift of the contact zone and load share among the meshing tooth-pairs under different load. 展开更多
关键词 double-envelop hourglass worm gearing tooth contact analysis ERRORS LOAD
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