Gear finish hobbing: potentials of several cutting materials

Sari, Deniz; Klocke, Fritz; Löpenhaus, Christoph

doi:10.1007/s11740-015-0626-7

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…Again the softening effect would be an acceptable explanation, as rising cutting speeds lead to rising temperatures and therefore, to decreasing cutting forces [12]. In this way, local tool life optima in dry gear hobbing have been explained [13]. Since tool life does not significantly differ at cutting speeds of vc = 100 m/min and vc = 140 m/min in case of workpieces with higher strength, the question arises, which other variables influence the softening effect.…”

Section: Resultsmentioning

confidence: 99%

Tool wear development in gear skiving process of quenched and tempered internal gears

Arndt

Klose

Gerstenmeyer

et al. 2021

Forsch Ingenieurwes

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Gear skiving is a highly productive machining process, especially for manufacturing of high strength internal gears as required for high performance electric drive trains. However, the complex process kinematics cause intense variations of the effective cutting parameters during tool engagement. Thus, particularly the tool must meet high requirements to achieve long tool life at required workpiece quality. These requirements are amplified even more when machining quenched and tempered materials from the massive blank.In the presented study, the influence of various key factors on the tool wear development in gear skiving process are quantified. In several tests, the cutting speed, workpiece tensile strength, cooling lubricant strategy, as well as the cutting strategy are varied in order to optimize tool life. Therefore, single-tooth tests on quenched and tempered internal gears from 31CrMoV9 (AISI 4340) steel are conducted and wear flank land width evolution of the tools is examined. In addition, the workpiece is evaluated with regard to surface quality. Results reveal that different factor level combinations can have various effects on tool wear characteristics and therefore on tool life. The correlations presented provide recommendations for practical application and contribute to deeper process understanding.

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Section: Resultsmentioning

confidence: 99%

Tool wear development in gear skiving process of quenched and tempered internal gears

Arndt

Klose

Gerstenmeyer

et al. 2021

Forsch Ingenieurwes

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“…The trials were performed using the y-cutting process as analogy process to gear hobbing. Fly-cutting trials have already been used in several investigations [4,15,23]. The tool data are shown in Table 3.…”

Section: Tool Geometry and Preparationmentioning

confidence: 99%

Experimental analysis on the influence of the tool micro geometry on the wear behavior in gear hobbing

Hendricks

Kühn²,

Troß³

et al. 2022

Preprint

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Gear hobbing is a well-established manufacturing process for cylindrical spur gears. The cutting edge of a hobbing tool is, among others, characterized by the cutting edge radius and the form-factor K. The magnitude of these parameters is ideally chosen based on the machining conditions given by the workpiece and cutting material, the cutting parameters as well as the gear and tool geometry. However, the influence of the cutting edge geometry on tool life and wear behavior is hardly known, which complicates an optimized tool design. Furthermore, the preparation process regarding the coating thickness distribution on the wear behavior is equally relevant. Therefore, the objective was to identify the influence of the cutting edge radius, the form-factor K and the preparation process on the wear behavior of gear hobbing tools made of powder metallurgical high speed steel (PM-HSS). Fly-cutting trials were performed as an analogy process for gear hobbing in order to study the wear behavior and identify the respective tool lives. The trials indicated that the form-factor K influences the wear behavior, while a variation of the cutting edge radius did not have a significant effect. A homogenous coating thickness could extend the tool life significantly.

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Integrated optimization method for helical gear hobbing parameters considering machining efficiency, cost and precision

Yan

Guo

et al. 2021

Int J Adv Manuf Technol

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Gear finish hobbing: potentials of several cutting materials

Cited by 8 publications

References 7 publications

Tool wear development in gear skiving process of quenched and tempered internal gears

Tool wear development in gear skiving process of quenched and tempered internal gears

Experimental analysis on the influence of the tool micro geometry on the wear behavior in gear hobbing

Integrated optimization method for helical gear hobbing parameters considering machining efficiency, cost and precision

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