A novel arc-tooth-trace cycloid cylindrical gear. (December 2017)

• Record Type: Journal Article
• Authors: Peng, Yun; Song, Aiping; Shen, Yuhan; Lin, Xiaochuan
• Is Part Of: Mechanism and machine theory. Volume 118(2017:Dec.)
• Page Start: 180
• Page End: 193
• Publication Date: 2017-12
• Subjects: Cylindrical gear -- Arc-tooth-trace -- Tooth profile -- Meshing theory -- Mathematical model; Machine theory -- Periodicals; Machinery -- Periodicals; Machines -- Périodiques; Génie mécanique -- Périodiques; Machine theory; Machinery; Periodicals; 621.81
• DOI: 10.1016/j.mechmachtheory.2017.08.009
• Languages: English
• ISSNs: 0094-114X

Abstract

Highlights: A novel arc-tooth-trace cycloid cylindrical gear with good meshing characteristics. The determination of geometric parameters of the arc-tooth-trace cycloid cylindrical gear, and design of arc-tooth-trace cycloid cylindrical gear profiles. A pair of physical model of the gears are made by using 3D printing technology to demonstrate its feasibility and its contact conditions. The preliminary results show that the arc-tooth-trace cycloid cylindrical gear is feasible and could have a promising future in application in the field of gear pump. Abstract: A novel arc-tooth-trace cycloid cylindrical gear is presented in this paper. According to the principles of gear meshing and the analysis of the basic gear geometric parameters, the profile equations of the gear tooth are deduced. The tooth trace of the gear is a segment of a circular arc, and the tooth profile is divided into two parts by the pitch circle, the first part of the tooth profile outside pitch circle is a standard arc segment; the other part, which is inside of the pitch circle, is a segment of cycloid. Two parts of the tooth profile are connected at the pitch circle with C 1 continuity. An example drive in 3D model is presented and its computerized simulation is carried out. Some meshing characteristics, such as the contact ratio, instantaneous transmission ratio, and the contact and bending stresses are analyzed. The results confirm that the arc-tooth-trace cycloid cylindrical gear has constant instantaneous transmission ratio and the contact and bending stresses are reduced in comparison with the involute gear.