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

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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Improving Gear Milling Efficiency by Creating Prefabricated Cutters with Replaceable Cutting Carbide Plates

Proceedings of Southwest State University ◽

10.21869/2223-1560-2020-24-1-35-51 ◽

2020 ◽

Vol 24 (1) ◽

pp. 35-51

Author(s):

E. V. Artamonov ◽

V. V. Kireev ◽

V. A. Zyryanov

Keyword(s):

Metal Cutting ◽

Cutting Tools ◽

Machine Building ◽

Initial Contour ◽

Technical Solution ◽

Processing Efficiency ◽

Milling Cutter ◽

Cutting Insert ◽

Metal Cutting Tool ◽

Building Enterprises

Today, when machining domestic-made worm milling cutter according to GOST 9324-80, a problem arises in their durability at the roughing stage. Russian tool companies engaged in the manufacture of metal cutting tools do not currently offer prefabricated worm tools with cutting elements made of hard alloy tools for machining large-modular gears.Purpose of research. Creation of prefabricated structures for machine-building enterprises with replaceable cutting carbide plates (RCHAP). Due to this, the productivity of equipment already available at the enterprise is increased several times, the economic efficiency of introducing high-quality metal-cutting tools makes it possible to purchase modern equipment and make the work of machine operators at machine-building enterprises more efficient and less time-consuming. In this paper, we propose a fundamentally new technical solution, which makes it possible to increase the efficiency of machining gears with a metal-cutting tool, with the arrangement of replaceable carbide cutting plates in the prefabricated initial contour of the manufacturing rail in worm milling cutters.Methods. The research method is the use of graphic simulation, which allows you to determine the size of the crosssectional area of the cut layer for the cutting elements of the worm tool.Results. Improving the processing efficiency will be achieved by implementing a group cutting scheme in a prefabricated worm milling cutter by using a larger number of main and side carbide cutting inserts on an Archimedean tool worm, which allow sequentially cutting the machining allowance and reducing the feed rate to the cutting insert, to ensure milling uniformity throughout the processing stage, and also reduce the magnitude of shock loads on cutting carbide elements of a precast tool.Conclusion. The use of replaceable carbide plates in a group cutting scheme increases the durability and reliability of a precast worm cutter.

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Increase of Firmness of the Metall-Cutting Tool on the Basis of Removal of Internal Tension in Replaceable Cutting Insert

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.682.510 ◽

2014 ◽

Vol 682 ◽

pp. 510-514 ◽

Cited By ~ 4

Author(s):

R.S. Chuykov ◽

A.A. Mokhovikov ◽

S.S. Chuykov

Keyword(s):

Hard Alloy ◽

Metal Cutting ◽

Cutting Tool ◽

Cutting Process ◽

Technical Solution ◽

Special Design ◽

Preliminary Heating ◽

Cutting Insert ◽

Metal Cutting Tool

Results of research of types of the destruction caused by existence of internal tension in a tool firm alloy at production of the replaceable many-sided plates (RMSP) which can be removed by preliminary heating of cutting plates prior to cutting process are given in work. The new technical solution on realization of a method of preliminary heating of SMP is developed for removal of internal tension in the tool firm alloys (TFA), and also the special design of the metal-cutting tool is developed for increase of operability of hard-alloy SMP with preliminary heating.

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Study on Technology Parameters for Coated Carbide Cutting Tools

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.556-562.498 ◽

2014 ◽

Vol 556-562 ◽

pp. 498-501

Author(s):

Xiao Jing Li ◽

Yan Hui Hu ◽

Di Wang ◽

Dong Man Yu

Keyword(s):

Hard Alloy ◽

Cutting Force ◽

Metal Cutting ◽

Cutting Tools ◽

High Hardness ◽

Machining Process ◽

High Wear Resistance ◽

Workpiece Material ◽

Ticn Coating ◽

Coated Carbide

Metal cutting processing is the most fundamental, most widely and the most important processing in industrial production. Because the development of mechanical manufacturing level plays a very important role in the coating technology material machining process. A coated carbide cutting tool with its high hardness and high wear resistance, good chemical stability and extensive compatibility characteristics, is widely applied in the metal cutting processing field. The author mainly studies the cutting force contrast between coated carbide cutting tools and not coated ones. Cutting tests have testified that if PVD technology applied on cutting, the cutting force of hard alloy cutter will alter with the change of feeds (f), depth of cutting (ap) and cutting velocity (v). The experiment suggests that the size of three-way cutting force of either the brand ZP25 hard alloy cutter or the carbide cutter by employing matrix ZP25 hard alloy cutter to respectively using PVD technology coat TiN or TiCN coating is successively FZP25>FTiCN>FTiN. The main reason for this is that the difference of frictional factor of the three kinds of cutter material and the workpiece material.

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METHODS FOR FORMING MULTI-LAYER WEAR-RESISTANT COATINGS ON THE CUTTING SURFACE OF A METAL WORKING TOOL

Spravochnik Inzhenernyi zhurnal ◽

10.14489/hb.2020.10.pp.027-032 ◽

2020 ◽

pp. 27-32

Author(s):

Yu. M. Zubarev ◽

M. A. Afanasenkov

Keyword(s):

Wear Resistance ◽

Metal Cutting ◽

Cutting Tool ◽

Effective Means ◽

Cutting Tools ◽

Tool Material ◽

Machine Building ◽

Stage Of Development ◽

Cutting Surface ◽

Wide Range

Improving the performance of metal-cutting tools, i.e. their wear resistance in a wide range of technological cutting modes, when processing various hard-to-process steels and alloys is an urgent task of modern machine-building production. The efficiency of blade processing at the present stage of development of mechanical engineering depends to a large extent on the performance of the cutting tool, which is primarily determined by the combination of physical and mechanical properties of the tool material-hardness, strength wear resistance, etc. however, obtaining the optimal combination of these properties in the volume of the cutting tool material presents significant difficulties. When solving the complex task of improving the quality and reliability of the cutting tool, it is of great importance to widely use various types of coatings on its cutting surface, which allow saving scarce materials and prolonging its service life, significantlyincreasing the performance of the tool. Improving the performance of tools is one of the main ways to improve the resource reliability of their operation. The main and most important performance indicators of tools are largely determined by the quality of their surface layers. Therefore, the formation of a high-quality surface layer on the surface of the cutting part of the tool and increasing wear resistance is the most effective means of improving its performance. This article discusses the main methods for improving the wear resistance of carbide cutting tools currently used, their evaluation and efficiency of use. The method of ionvacuum modification is proposed as the main method for improving the efficiency of the cutting tool.

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Constriction-resistance concept applied to wear measurement of metal-cutting tools

Proceedings of the Institution of Electrical Engineers ◽

10.1049/piee.1971.0069 ◽

1971 ◽

Vol 118 (2) ◽

pp. 381 ◽

Cited By ~ 9

Author(s):

A.J. Wilkinson

Keyword(s):

Metal Cutting ◽

Cutting Tools ◽

Constriction Resistance ◽

Wear Measurement

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Comparative tests of the metal cutting tools performance in the processing of stainless steels

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/441/1/012052 ◽

2018 ◽

Vol 441 ◽

pp. 012052

Author(s):

I V Shvetsov ◽

B Ya Mokritskij ◽

O A Malukhina ◽

A H Rahmonov ◽

V N Belyakov

Keyword(s):

Stainless Steels ◽

Metal Cutting ◽

Cutting Tools ◽

Comparative Tests

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Steady-State Thermal Stresses in Wedge-Shaped Cutting Tools

Journal of Engineering for Industry ◽

10.1115/1.3438656 ◽

1975 ◽

Vol 97 (3) ◽

pp. 1060-1066

Author(s):

P. F. Thomason

Keyword(s):

Thermal Stress ◽

Steady State ◽

Metal Cutting ◽

Thermal Stresses ◽

Heat Conduction Problem ◽

Equivalent Stress ◽

Cutting Tools ◽

Thermoelastic Stress ◽

Plastic State ◽

Steady State Heat

Closed form expressions for the steady-state thermal stresses in a π/2 wedge, subject to constant-temperature heat sources on the rake and flank contact segments, are obtained from a conformal mapping solution to the steady-state heat conduction problem. It is shown, following a theorem of Muskhelishvili, that the only nonzero thermal stress in the plane-strain wedge is that acting normal to the wedge plane. The thermal stress solutions are superimposed on a previously published isothermal cutting-load solution, to give the complete thermoelastic stress distribution at the wedge surfaces. The thermoelastic stresses are then used to determine the distribution of the equivalent stress, and this gives an indication of the regions on a cutting tool which are likely to be in the plastic state. The results are discussed in relation to the problems of flank wear and rakeface crater wear in metal cutting tools.

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Hard Nano-Crystalline Coatings for Cutting Tools

Materials Science Forum ◽

10.4028/www.scientific.net/msf.567-568.185 ◽

2007 ◽

Vol 567-568 ◽

pp. 185-188 ◽

Cited By ~ 1

Author(s):

Miroslav Piska

Keyword(s):

High Speed ◽

Metal Cutting ◽

Cutting Tool ◽

Cutting Tools ◽

Dry Cutting ◽

Nano Crystalline ◽

The Right ◽

Machining Productivity ◽

Hard Cutting ◽

Cutting Tool Materials

Modern trends in metal cutting, high speed/feed machining, dry cutting and hard cutting set more demanding characteristics for cutting tool materials. The exposed parts of the cutting edges must be protected against the severe loading conditions and wear. The most significant coatings methods for cutting tools are PVD and CVD/MTCVD today. The choice of the right substrate or the right protective coating in the specific machining operation can have serious impact on machining productivity and economy. In many cases the deposition of the cutting tool with a hard coating increases considerably its cutting performance and tool life. The coating protects the tool against abrasion, adhesion, diffusion, formation of comb cracks and other wear phenomena.

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