Tooth Profile Modification and Simulation Analysis of Involute Spur Gear

Abstract

The spur gear mechanism with the standard involute profile may generate noise and shock because of tooth structure and transmission principle, resulting in substantial transmission errors. These limitations can be effectively resolved through tooth profile modification. To address the defects and deficiencies of existing tooth profile modification methods in terms of the modification principle and effect assessment, this study proposes an adaptive method of tooth profile modification with alterable tooth profile for spur gear mechanism. A corresponding simulation method for evaluating the modification performance of the gear transmission was introduced in detail. The final shape parameters of the modification profile were determined by orthogonal experiments. Simulation results show that tooth profile modification for involute spur gear does not affect bending and contact stresses. The process can also effectively improve the stability of transmission. The impact and noise of gear pair with tooth profile modification significantly decreased during meshing. The proposed method exhibits stronger adaptability compared with other existing methods of tooth profile modification. Moreover, the proposed method can adaptively determine the optimal modification parameters based on different conditions and obtain the ideal modification effect.

Meshing Simulation and Strength Calculation of a Carburized Gear Pair

“…Table I lists the basic parameters of the gear pair, where the import power P is 10 kW, the driving gear rotate speed n 1 is 960 r/min, and the load factor K a is 1.526. 4 When the finite element model of the gear pair is established and transient analysis is performed, the stress distribution of the carburized gear pair in any position can be obtained at any moment [26,27]. The time-history (time-hist) curve of the maximum stress can be obtained by reading the maximum contact stress on the surface and the maximum equivalent stress on the tooth root of the carburized gear.…”

Comprehensive Modification Technology of Involute Spur Gear Based on Optimal Transmission Performance

“…As mentioned above, the shape of the tooth surface is controlled by two modification curves, and it can be changed by controlling parameters which influence these two modification curves. Referring to the previous study [21], ideal modification way is optimized through the orthogonal experiment. In addition, parameters that control modification effects and transmission performance are influence factors, and they are λ, c, β, ω, η, and φ.…”

Teaching Mode of Mechanical Design Course based on Simulation Analysis Technology

“…Then, students will recheck the strength of the designed gear transmission. Performing transient meshing analysis for gear pair using finite element analysis technology, three worst meshing positions can be found with weak tooth contact and root bending fatigue strength [11]. Then, fatigue analyses can be conducted at these three meshing positions, and gear strength can be checked in a computer.…”