Tooth contact analysis of crown gear coupling with misalignment

An experimental investigation of contact characteristics of crown gear coupling with angular misalignment

“…Therefore, three-or five-tooth finite element model is often used to conduct loaded tooth contact analysis for general gear transmission. However, the motion law of crown gear coupling is quite different from that of general gear transmission (Guan et al, 2018). Under the condition of angular misalignment, all the teeth of crown gear coupling can participate into contact at the same time, and the contact condition of the engaging tooth is different from each other.…”

“…To obtain a larger contact area and a smaller clearance related to the backlash-hit noise between teeth, Hakozaki and Shimachi (2004) adjusted the radius of curvature along the hub tooth width direction to modify the contact area of the crown gear coupling with angular misalignment. Based on the theories of differential geometry and gear mesh, Guan et al (2018) accomplished geometrical mathematical models, proposed a tooth contact analysis technique, and discussed the effects of misalignment angle and crowning on the minimum circumferential clearance, and contact path for this special device. Based on the proposed tooth contact analysis technique above, Guan et al (2019a) compared three geometric models for the crown gear coupling on tooth contact analysis, and found that when the coupling is misaligned, a serious load concentration occurs at the hub or sleeve tooth tip edge.…”

Investigation on the wear of spur gears generated by modified cutter

“…To calculate the wear for all the points on the tooth profile, it is important that for any point on the tooth profile of the drive gear, there is a corresponding contact point on the driven gear. Though several methods have been proposed earlier for gear tooth contact analysis [43,44], this study employs an analytical method. Figure 3 shows the coordinate systems for the calculation of contact points.…”

Computerized generation and simulation of meshing of a novel crown gear coupling avoiding edge contact

“…2. The sleeve surface of the novel crown gear coupling can be manufactured by a shaper cutter (Guan et al, 2018) and the process of the derivation is omitted here. The hub surface of the novel crown gear coupling can be determined by the following processes: (I) in the meshing of the hub workpiece with an imaginary rack cutter with parabolic modification, when the initial profile crowned tooth surface Σ w is generated and the form grinding wheel surface can be determined because the axial section of the form grinding wheel is the same as the cross-section of surface Σ w , (II) in the process of generation by the form grinding wheel, when the intermediate profile and longitudinally crowned hub tooth surface Σ h is obtained, (III) in the process of generation by a mill cutter, when the final, profile and longitudinally crowned hub tooth surface with a spherical tip is obtained.…”

“…Guan, Yang and Fang, Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol.13, No.3 (2019) θ is the angular misalignment error between the hub axis and sleeve axis. TCA for the crown gear coupling (Guan et al, 2018) can be applied to simulate the meshing condition, and the main goal is to determine contact path. The first step is to represent the two mating tooth surfaces in the same coordinate system, whose coordinates and unit normal should be the same at the point of contact.…”