Manufacturing helical gears with double-crowning and twist-free tooth flanks using a variable pressure angle shaving cutter

Hsu, Ruei‐Hung; Wu, Yuh-Renn; Tran, Van-The

doi:10.1177/0954405417718590

Cited by 12 publications

(6 citation statements)

References 17 publications

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“…Hsu R. H. proposed a shaving method for double crowning that has no natural twist in the tooth flanks on the work gear surfaces. It uses a variable pressure angle shaving cutter in a parallel gear shaving process [4]. Sohn J. proposed an improved worm gear hobbing method.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

Research on Tooth Flank Twist Based on Orthogonal Polynomials Characterization

Zhao

Shi

et al. 2022

Machines

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“…For example, Calleja et al 1,2 provided new views in free form milling and flank form design of gears. Hsu et al 3 posed a shaving method for double-crowning by using variable pressure angle shaving cutter. In the gear manufacturing method, hobbing is the most widely used because it has high production efficiency and machining accuracy, and is easier for machine adjustment and tool manufacture.…”

Section: Introductionmentioning

confidence: 99%

Modelling and experiment of gear hob tooth profile error for relief grinding

Yang

Chen

Wang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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Gear hob is an important tool that is most used in gear processing. Hob accuracy directly exerts an overwhelming influence on the quality of the processed gear. Generally, the hob tooth profile accuracy is mainly determined by relief grinding process. Studies on tooth profile errors of gear hobs caused by severe friction and cutting with the high-speed rotation of the wheel during the form grinding machining of hobs are limited. Thus, a theoretical model of the tooth profile error prediction under different machining parameters was established based on the analysis of coupling influence of high temperature and high strain rate on gear hobs in the relief grinding process. The model was completed on the basis of the dynamic explicit integral finite element method of thermo-mechanical coupling. Through the prediction model, the influence of the grinding depth ap, feed speed Vw and grinding speed Vs on the tooth profile error can be analysed. In addition, an algorithm for accurately calculate the grinding wheel axial profile by combining instantaneous envelope theory and hob normal tooth profile was proposed. The hob relief grinding experiments were carried out using the proposed grinding wheel profile algorithm. The relative error of the prediction obtained by comparing the calculation results of the prediction model with the experimental results is within 10%. Results prove the validity of the prediction model. This finding is greatly important for optimising the accuracy of hob relief grinding.

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“…Han et al 32 proposed a tooth surface contour error modeling method and an adaptive electronic gearbox cross-coupling controller for internal gearing power honing. A new shaving method for double crowning that has no natural twist in the tooth flanks on the work gear surfaces is proposed by Hsu et al, 33 using a variable pressure angle shaving cutter in a parallel gear shaving process. Gonzalez-Perez and Fuentes-Aznar 34 proposed an analytical method for derivation of basic machine-tool settings that allows the conjugated action in face-hobbed spiral bevel and hypoid gear drives wherein the gear is not generated.…”

Section: Introductionmentioning

confidence: 99%

“…In numerous papers, the machine tool-settings for pinion generation are determined in order to satisfy the prescribed tooth blank offset. 1,10,12,29,33,34…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of the manufacture of face-milled hypoid gears on numerical controlled machine tool

Simon

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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A new method is presented for advanced manufacture of hypoid gears on numerical controlled machine tool. The tool geometry and machine tool settings are determined to introduce the optimal tooth modifications into the teeth of hypoid gears. The goal is to reduce the maximum tooth contact stresses, angular displacement error of the driven gear, and energy losses in the oil film existing between tooth surfaces. The calculation is based on the optimal variation of machine tool settings on the classical machine tool for hypoid gear manufacture. The novelty of the method is that during the machining process of teeth surfaces, the variation of machine tool settings on the cradle-type hypoid generator is conducted by polynomial functions of fifth-order. By an algorithm, this variation of machine tool settings is transferred to the numerical controlled machine tool for hypoid gear manufacture (hypoid generator). The obtained results have shown that by applying the optimal manufacture process, considerable reductions in tooth contact stresses and angular displacement errors of the driven gear, and a moderate reduction in energy losses were obtained. Therefore, by applying this new method in practice, advanced manufacture of hypoid gears on CNC hypoid generator is made possible, resulting improved operating characteristics of the hypoid gear pair.

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Manufacturing helical gears with double-crowning and twist-free tooth flanks using a variable pressure angle shaving cutter

Cited by 12 publications

References 17 publications

Research on Tooth Flank Twist Based on Orthogonal Polynomials Characterization

Research on Tooth Flank Twist Based on Orthogonal Polynomials Characterization

Modelling and experiment of gear hob tooth profile error for relief grinding

Multi-objective optimization of the manufacture of face-milled hypoid gears on numerical controlled machine tool

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