Improving the efficiency of hobbing mills

Артамонов, Е. В.; Kireev, V. V.; Zyryanov, V. A.

doi:10.3103/s1068798x17050057

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…A lot of research are devoted to questions of improving the process of processing gears with worm mills [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

New design of the evolvent worm mill with carbide turning rack

Boriskin¹,

Astapova²

2021

cisisr

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For high-speed cutting of teeth of cylindrical wheels made of structural and difficult-to-machine steels and alloys, cast iron, non-ferrous metals and various non-metallic materials with increased abrasive ability in conditions of mass and large-scale production, carbide hob cutters are used. A promising direction for hob cutters is the use of rotary racks as cutting elements. However, when they are rotated by 180°, errors in the tool profile are transferred to the workpiece. Therefore, the existing designs of such cutters are used only for roughing or semi-finishing, reaching accuracy classes B, C and D according to GOST 9324-2015. In order to improve their accuracy, the article proposes a new design of the assembled hob cutter with carbide rails, which allows maintaining the required tooth profile after turning the cutting elements. Milling cutters with flat front surfaces and back surfaces are adopted, the generatrix of which is perpendicular to the cutting edge. From the point of view of the working conditions of the cutting tool, studies of the kinematic angles were carried out. The calculation was carried out according to the formulas derived according to the scheme for the general option of cutting the wheel with a worm cutter. In this case, the working angles were calculated at points on the tooth profile at different moments of rotation of the cutter and along the entire length of the cutter. The analysis of the influence of the main parameters of the cutter on the cutting angles is presented. The possibility of using the design of a prefabricated worm cutter with flat front surfaces and back surfaces, the generatrix of which is perpendicular to the cutting edge, has been confirmed. Recommendations for achieving optimal working angles in the process of gear hobbing for milling cutters of the adopted design are proposed.

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“…A lot of research are devoted to questions of improving the process of processing gears with worm mills [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

New design of the evolvent worm mill with carbide turning rack

Boriskin¹,

Astapova²

2021

cisisr

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“…Nowadays creation of the assembly cutting tool for processing of the tooth wheels with the retrofittable carbide blades is a big step forward for the machine-building industry. As opposed to the cutting hobs with a relieved tooth, the tool with RCB allows: multiple usage of a case, exclusion of necessity of braze and rounding of blades, shortening of time required for a change of the tool, increase processing modes, lack of correction in adjustment of equipment during change of RCB [1][2].…”

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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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Resource management of a cutting tool in case of its reuse

Пасько

Antsev

2021

Materials Today: Proceedings

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Improving the efficiency of hobbing mills

Cited by 5 publications

References 2 publications

New design of the evolvent worm mill with carbide turning rack

New design of the evolvent worm mill with carbide turning rack

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

Resource management of a cutting tool in case of its reuse

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