Gear Hobbing: a Contribution to Analogy Testing and its Wear Mechanisms

Stein, Sebastian; Lechthaler, Markus; Krassnitzer, S.; Albrecht, Katharina; Schindler, Andreas; Arndt, M.

doi:10.1016/j.procir.2012.04.039

Cited by 15 publications

(7 citation statements)

References 5 publications

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“…4). Usage of this pattern will allow to reduce wear and tear of the cutting tool [8][9][10][11] by means of segmentation of chip cut by razor edges. Due to this, the chip changes into a simple one, that allows to reduce surface stresses which influence on a cutting edge of the tool.…”

Section: Fig 3 Division Of Machining Stock By Means Of Tangential Pmentioning

confidence: 99%

An interlocking side mill with retrofittable carbide blades for processing of coarse-pitch tooth wheels

2018

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Nowadays Russian manufacturers of metal-cutting tools for machine-building industry do not offer structures of prefabricated cutting hobs with retrofittable carbide blades for processing of tooth wheels, though usage of retrofittable carbide blades allows to increase significantly working capacity and productivity of the processing. As of today creation of an assembly cutting tool for processing of tooth wheels with the retrofittable carbide blades is a big step forward for machine-building industry. A high quality tool allows warranting for a new equipment and making work of operators more productive. This paper offers a new technical solution providing increase of efficiency of processing by assembly tools with the retrofittable carbide blades made of a hard alloy. Due to usage of progressive cutting patterns division of a margin for straight-line segments and curved sections is performed. This division has a positive impact on cutting hard-alloy inserts and also reduces their wear and tear.

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Section: Fig 3 Division Of Machining Stock By Means Of Tangential Pmentioning

confidence: 99%

An interlocking side mill with retrofittable carbide blades for processing of coarse-pitch tooth wheels

2018

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“…Only the vicinity of the cutting zone is considered in the numerical model. For the tool-workpiece couple, the solution corresponding to the thermomechanical problem should satisfy simultaneously and at any time the following mechanical and thermal balance equations (4)(5): (5) is the Cauchy stress tensor, v f the body force density, u the acceleration, T the temperature, the material density, the thermal conductivity, p c the specific heat capacity, and v q the volumetric heat generation.…”

Section: Numerical Calculationsmentioning

confidence: 99%

“…Some authors have been investigated the hob geometry, cutting forces measurements, the chip formation process during machining and the tool wear prediction [4][5][6]. Moreover, several authors developed various simulations codes of the gear hobbing process, such as SPARTApro and HOB3D software, [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Numerical models have been developed using Computer-Aided Design (CAD) [1,2,9], Finite Element Analysis (FEA) [3,10] or analytical based approaches, [11,12]. Using these models, the prediction of the machining parameters such as chip geometry, chip flow, tool wear, cutting forces, etc… become possible considering the real workpiece, tool and production data, [1,5,6,[13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of the Cutting Forces Generated During the Gear Hobbing Process: Spur Gear

Sabkhi¹,

Pelaingre²,

Barlier³

et al. 2015

Procedia CIRP

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The main goal of the current study is to propose a model for determining the cutting forces taking into account the complex kinematics of the hobbing process. This model is based on one hand on the CAD geometrical simulations of undeformed chip generated by hobbing process and on the other hand on a mechanistic model. In this mechanistic approach, the specific force coefficients have been obtained from a 2D numerical model. As a result of this investigation, the evolution of cutting forces was used to analyze the effect of the cutting parameters on the machinability of the machined material.

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“…One of the most important elements of equipment is the metal-cutting tool [2]. Replacement of the tool from HSS of steel on the cutting tool with use of WC-Co [3][4][5][6][7][8] sintered hard alloys gives increase in productivity and overall effectiveness of processing [9][10][11][12]. Comprehensive research approach which considers design of the tool the used WC-Co hard alloy that is rational the condition has to be considered that the cutting ability of material of the tool increases, the universality of its application decreases.…”

mentioning

confidence: 99%

Modeling of process of gear milling for definition of the intense deformed state in replaceable many-sided plates of a worm mill

2019

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The tool equipment plays an important role in work of machine-building enterprises. One of the most important elements of equipment is the metal-cutting tool [1]. Replacement of the tool from HSS of steel on the cutting tool with use of WC-Co [2-7] sintered hard alloys gives increase in productivity and overall effectiveness of processing [8-11]. When the cutting ability of material of the tool increases, the universality of its application decreases therefore the most rational is comprehensive research approach which considers design of the tool the used WC-Co hard alloy. Design, production and testing of the toothed cutting tools, working off of the modes of cutting have to be carried out concerning a specific work piece and its material. When developing this kind of the tool it is necessary to consider features of WC-Co alloy as the cutting material, the cutting modes, destruction of the tool and other moments connected with its use. Influence of an initial contour on distribution of tension in the replaceable cutting many-sided plate. Results of calculation of the intense deformed state in a replaceable plate from the material WC-Co. Zones of stretching and compression are observed on the main cutting edge. Concentration of the dangerous stretching tension is located in a transitional zone between the direct side cutting edge to top as in this zone there is the greatest constraint of cutting. Respectively, the greatest destruction will happen in this zone. Important, the fact that in this part of the cutting edge there will be the biggest wear on a back surface. The analysis of isolines of distribution of tension showed that the stretching tension along a front surface of the replaceable cutting plate decreases because each replaceable cutting plate cuts off the part of material. First, work is entered by the made narrower cutting plate which cuts off metal an upper part of the cutting plate, and then the underestimated cutting plate which works with the side cutting edges works. As a result of the conducted researches it was established that with the progressive scheme of cutting in comparison with the standard scheme of cutting at which the initial profile of the making rail is made on DIN3972 at gear milling, dangerous tensile stresses in the cutting hard-alloy plates significantly decrease.

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Gear Hobbing: a Contribution to Analogy Testing and its Wear Mechanisms

Cited by 15 publications

References 5 publications

An interlocking side mill with retrofittable carbide blades for processing of coarse-pitch tooth wheels

An interlocking side mill with retrofittable carbide blades for processing of coarse-pitch tooth wheels

Characterization of the Cutting Forces Generated During the Gear Hobbing Process: Spur Gear

Modeling of process of gear milling for definition of the intense deformed state in replaceable many-sided plates of a worm mill

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