Modeling and experiment of grinding wheel axial profiles based on gear hobs

Yang, Shuying; Chen, Weifang

doi:10.1016/j.cja.2020.06.030

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…The correct profile of the grinding wheel was achieved by sharpening it with a single-point diamond sharpener using templates. Currently, modern numerically controlled diamond sharpeners are used instead of traditional templates, which are described by Yoshimo and Ohishima [43], Shuying and Weifang [44], and Nieszporek and Piotrowski [24,37,45]. This allows for virtually any optimisation of the grinding wheel profile.…”

Section: Geometric Analysis Of the Rake Surfacementioning

confidence: 99%

Profile Optimisation of a Solid Modular Hob in the Machining of Gears Made of Classic and Unusual, Innovative Materials

Piotrowski,

Tyliszczak

2024

Materials

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Modular hobs are tools with very complex geometry. Regardless of the material of the gear wheels, they determine the accuracy of the gears made in the hobbing machining process. Gears are made of various, often innovative materials depending on the requirements. Sometimes, the materials are characterised by very high hardness (over 65 HRC). The mathematical basis for describing the faces of a hob presented in the article allows for modifying the rack profile shaping the gear wheel’s teeth. The model’s universality makes it possible to perform numerical simulations of the influence of individual parameters of the hob creation process (geometry of the grinding wheels and their setting in the shaping process) on the profile of the rake and flank surfaces. The cutting edge (rack edge) is the locus of points belonging to both of these surfaces and thus directly impacts the accuracy of the gear wheel that is shaped in the hobbing process. The article summarises the authors’ long-term cooperation with the industry, resulting in a series of articles devoted to hobs. The issues presented in the article are significant to the machinery industry and hob manufacturers.

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Section: Geometric Analysis Of the Rake Surfacementioning

confidence: 99%

Profile Optimisation of a Solid Modular Hob in the Machining of Gears Made of Classic and Unusual, Innovative Materials

Piotrowski,

Tyliszczak

2024

Materials

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“…The hob and the gear wheel are rotated in spatial according to the strict transmission ratio to form the gear tooth profile. At the same time, the axial feed of the hob relative to FS forms a full tooth width [16,17]. Similar to the hobbing process, in the CM process, the FS rotation is the main movement (autorotation around the Z axis), which rotates continuously around the axis at a constant speed.…”

Section: Principle Of Circumferential Modificationmentioning

confidence: 99%

Circumferential spatial tooth profile modification of flexspline for harmonic drive: A novel method and a case study

Huang

Qian

et al. 2022

Preprint

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Harmonic drive is widely used in the industrial robotics field due to the excellent deceleration performance. The tooth modification of the flexspline in the harmonic drive faces a great challenge. In this paper, a novel spatial tooth profile modification method along the circumferential direction of flexspline for a harmonic drive is proposed. Through the hob circumferential offset, the tooth profile rotates and the tooth thickness of interference part is reduced, then the spatial meshing is realized. The circumferential modification method has a small change of meshing point position and small pressure angle, which is beneficial to maintain the trans-mission accuracy and improve the service life of the harmonic drive. In addition, the relation model of spatial motion between hob and flexspline, and the relation between tooth profile and modification quantity are studied. Two main factors, circumferential modification quantity and radius of flexspline indexing circle on circumferential modification are analyzed. Afterward, the novel stepwise modification of the circumferential spatial tooth profile of flexspline is introduced. Finally, a case study of circumferential spatial tooth profile modification of flexspline for harmonic drive is conducted to show the advantages of the proposed modification method.

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“…A large number of papers deal with different profile modifications, the sharp differentiation of roughing, semifinishing and finishing gear-hobs and their profiles [1], [2]. Here it must be remarked that interests are focused on profile modifications targeting the improvement of the tooth dedendum stiffness, extending to the study of the realization, involving the profile of the gear hob tooth relief face grinding wheel, its axial profile and also its dressing methods [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of the Grinding Process of a Gear Hob Helical Rake Face

Hodgyai

Máté

Tolvaly-Roșca

et al. 2021

Acta Universitatis Sapientiae, Electrical and Mechanical Engineering

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This paper presents a study regarding the gear hob’s rake face grinding possibilities and its consequences. A simple theoretical lined surface is considered. The mathematical model of the reciprocate meshing of surfaces was applied. It was proven that the proposed form of the rake face cannot be obtained because an undercut of inacceptable extent occurs. It is also proven and sustained by CAD modeling that using a simplified, flat grinding disk, the undercut is avoided, but the phenomenon of transection appears.

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Modeling and experiment of grinding wheel axial profiles based on gear hobs

Cited by 9 publications

References 16 publications

Profile Optimisation of a Solid Modular Hob in the Machining of Gears Made of Classic and Unusual, Innovative Materials

Profile Optimisation of a Solid Modular Hob in the Machining of Gears Made of Classic and Unusual, Innovative Materials

Circumferential spatial tooth profile modification of flexspline for harmonic drive: A novel method and a case study

Peculiarities of the Grinding Process of a Gear Hob Helical Rake Face

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