Approximation model for longitudinal-crowned involute helical gears with flank twist in continuous generating grinding

Yu, Bo; Kou, Hanlin; Zhao, Baoya; Shi, Zhaoyao; Sun, Yanqiang; Wu, Guoqing

doi:10.1007/s00170-021-07099-y

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…In the longitudinal modification processing of the helical cylindrical gear, when the conventional worm grinding wheel is used, the tooth flank twist will happen. An approximate model of the tooth flank twist of the involute helical spur gear during continuous grinding is proposed in recent research [2]. When the tooth flank is twisted during the machining process, the high point of each modification curve on the tooth flank moves along the normal contact profile according to the meshing principle.…”

Section: Factors Affecting the Twist Of The Tooth Flank In The Grindi...mentioning

confidence: 99%

“…However, the theoretical geometric error when processing the longitudinal modification of the gears with the hobbing, grinding and other gear processes, will lead to the tooth flank twist, as shown in Figure 1. The twist will become more and more serious with the increase of the amount of the crowning and the gear helix angle [2]. The twist of the tooth flank will cause problems such as larger backlash, larger vibration and shock, and will reduce transmission accuracy, resulting in poor gear meshing performance and increased meshing noise [3].…”

Section: Introductionmentioning

confidence: 99%

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Research on Tooth Flank Twist Based on Orthogonal Polynomials Characterization

Zhao

Shi

et al. 2022

Machines

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Tooth flank twist is a common phenomenon in the helical crowning modification of helical cylindrical gear, which reduces the performance of the gear. At present, the measurement of tooth flank twist is still in the stage of replacing surface with line. The development of 3-D measurement technology makes the acquisition of gear information more comprehensive and complete. By processing the 3-D point cloud data, the twist deviation on the tooth flank can be found, which is particularly important for improving the quality of the tooth flank. In this paper, a characterization method of tooth flank twist based on orthogonal polynomials was proposed, which can effectively separate the twist deviations existing on the tooth flank. The correctness of the method was verified by measurement experiments. Taking worm grinding wheel grinding to process helical crowning modification as an example, the model of various parameters of the gear and the amount of twist was established and the twist deviation in processing was predicted. This provides a new method for eliminating the twist deviation of the tooth flank.

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Section: Factors Affecting the Twist Of The Tooth Flank In The Grindi...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Tooth Flank Twist Based on Orthogonal Polynomials Characterization

Zhao

Shi

et al. 2022

Machines

Self Cite

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“…Zhou WH [12] proposed a new approach to modeling the tooth surface topology in continuous generating grinding by replicating the surface topography of the grinding worm, obtaining the tooth surface topography by the Boolean operation, and obtaining the gear surface topology by comparing this surface with the surface of an ideal gear. Yan and Yu [13][14] proposed a gear meshing line calculation method in a simple mathematical form, and the optimization method is proposed to reduce gear flank twist based on the model. The research on modeling and predicting the gear flank twist considering the lead modification, profile modifications and position errors of CNC machine tools has not been touched yet.…”

Section: Introductionmentioning

confidence: 99%

Modeling and prediction of gear flank twist for generating gear grinding

Zhang

Zhao

Pan

et al. 2022

Int J Adv Manuf Technol

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Gear flank twist has a significant effect on the load-carrying capacity. However, most prediction models of gear flank twist can't be applicable for gears with profile modification. A new method for predicting gear flank twist for the generating grinding process is developed in this paper, taking into consideration the effect of lead modifications, profile modifications and position errors of CNC machine tools on gear flank twist. And the influences of four gear parameters on gear flank twist were studied using orthogonal experiments, which proves that the change of module has the greatest effect on gear flank twist. And the maximal profile modification value has minimal effect on gear flank twist. The experimental results proved that the model can accurately predict the gear flank twist. Besides, this paper described an gear parameters optimization study to reduce gear flank twist based on nine well-planned orthogonal experiments.

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