Milling Cutters for Processing Highly Hard Materials

Blade machining of workpiece surfaces for parts made of high hardness material is a complex process. Solid-carbide end mills are mainly used, the range of which is wide.
However, it is difficult to choose a rational milling cutter, since there are no recommendations for choosing it. The article presents the methodology and recommendations developed for selecting a cutter for workpieces, the surface layer material of which has a hardness of HRC 65. The results obtained do not solve the problem as a whole, but allow a reasoned choice of an efficient cutter of a small diameter. As a comparison criterion, the period of cutter life under equal operating conditions was adopted.

References

[1] Kirichek A.V., Solov’yev D.L., Lazutkin A.G. Tekhnologiya i oborudovanie statiko-impul’snoy obrabotki poverkhnostnym plasticheskim deformirovaniem [Technology and equipment of static-pulse processing by surface plastic deformation]. Moscow, Mashinostroenie Publ., 2004. 288 p. (In Russ.).

[2] Lazutkin A.G., Kirichek A.V., Stepanov Yu.S., Solov’yev D.L. Mekhanika nagruzheniya poverkhnosti volnoy deformatsii [Mechanics of surface loading by a deformation wave]. Moscow, Mashinostroenie Publ., 2005. 150 p. (In Russ.).

[3] Fedonina S.O., Kirichek A.V., Mokritskiy B.Ya. et al. Mechanical machining of deformation-strengthened deposited high alloys. Uprochnyayushchie tekhnologii i pokrytiya [Strengthening Technologies and Coatings], 2019, vol. 15, no. 10, pp. 448–450. (In Russ.).

[4] Mokritskiy B.Ya., Shelkovnikov V.Yu. Blade machining of workpieces of the details, that have strengthening by high-hardness surfacing. Metalloobrabotka, 2021, no. 2, pp. 3–7, doi: https://doi.org/10.25960/mo.2021.2.3 (in Russ.).

[5] Vereshchaka A.A. Povyshenie iznosostoykosti tverdosplavnykh rezhushchikh instrumentov putem upravleniya parametrami funktsional’nykh sloev nanostrukturirovannykh pokrytiy. Avtoref. diss. dok. tekh. nauk [Raising wearability of carbide cutting tools by means of control on functional layers parameters of nanostructured coatings. Kand. tech. sci. diss.]. Moscow, STANKIN Publ., 2021. 36 p. (In Russ.).

[6] Vereshchaka A.S., Dachaeva A.V., Anikeev A.I. Working capacity enhancement of cutting tools in terms of machining of difficult-to-cut materials by complex application of wear-resistant coating and hard alloy. Izvestiya MGTU MAMI, 2010, no. 1, pp. 99–106. (In Russ.).

[7] Grigor’yev S.N. Metody povysheniya stoykosti rezhushchego instrumenta [Methods for improving durability of a cutting tool]. Moscow, Mashinostroenie Publ., 2011. 368 p. (In Russ.).

[8] Evdokimov D.E., Skuratov D.L., Fedorov D.G. Influence of tool wear on the heat-flux distribution and temperature at the contact surfaces in the end milling of OT4 titanium alloy. STIN, 2015, no. 9, pp. 26–29. (In Russ.). (Eng. version: Russ. Engin. Res., 2016, vol. 36, no. 4, pp. 324–327, doi: https://doi.org/10.3103/S1068798X16040043)

[9] Elkin M.S. Issledovanie vliyaniya iznosostoykikh pokrytiy rezhushchego instrumenta na parametry kachestva obrabotannoy poverkhnosti pri frezerovanii kontsevymi frezami lopatok i monokoles. Diss. kand. tekh. nauk [Study on effect of wear-resistance coatings of cutting instrument on quality parameters of a processed surface at shaping by endmills of blades and blisks. Kand. tech. sci. diss.]. Rybinsk, RGATU Publ., 2015. 205 p. (In Russ.).

[10] Kurochkin A.V. Povyshenie rabotosposobnosti monolitnykh tverdosplavnykh kontsevykh frez putem optimizatsii arkhitektury mnogosloynykh nanostrukturirovannykh iznosostoykikh pokrytiy. Atoref. diss. … kand. tekh. nauk [Raising efficiency of monolithic carbide endmills by architecture optimization of multilayer nanostructured wear-resistance coatings. Kand. tech. sci. diss.]. Rybinsk, RGATU Publ., 2012. 16 p. (In Russ.).

[11] Tabakov V.P., Chikhranov A.V. Raising working efficiency of carbide tools using directed choice of rational parameters for a wear-resistance coating composition. STIN, 2016, no. 3, pp. 14–18. (In Russ.).

[12] Tabakov V.P., Smirnov M.Yu., Tsirkin A.V. et al. The mathematical description of cracking processes in wearproof coatings of the cutting tool. Uprochnyayushchie tekhnologii i pokrytiya [Strengthening Technologies and Coatings], 2007, no. 6, pp. 48–51. (In Russ.).

[13] Dzieyk B. Fortschritte in der Zerspanungstechnik durch mehrlagige Hrtmetallbeschichtung. Technisches Zentralblatt fur praktische Metallbeschichtung, 1994, vol. 68, no. 2–6, pp. 199–202.

[14] Horlin H.A. TiC coated cemented carbides — their introduction and impact on metal cutting. Prod. Eng., 1971, vol. 50, no. 45, pp. 153–159.

[15] Odinokov V.I., Dmitriev E.A., Evstigneev A.I. Simulation of molten metal pouring into the continuous casting machine mold. Mater. Today: Proc., 2019, vol. 19, no. 5, pp. 2274–2277, doi: https://doi.org/10.1016/j.matpr.2019.07.596