student
employee
Minsk, Belarus
Voronezh, Voronezh, Russian Federation
UDK 674 Деревообрабатывающая промышленность
The interaction of a circular knife with wood is a simple but interesting topic. The article will analyze the interaction of a knife with wood. A program is described that allows determining the preliminary deformation force for various disk shapes: rings, prisms, spheres, according to a given penetration area. Two periods of pressing are considered, both continuous and hollow, with sharply different pressure changes. Talk about the process of deformation of wood during compression along the fibers. Conclusions are drawn to reduce the cutting force. To establish the relationship between the degree of pressing and the axial stress (division force), a series of experiments were carried out on a testing machine using standard samples of pine and poplar wood. An experimental curve is constructed in a system of rectangular coordinates. With the help of a mechanical dynamometer, the total force of the division of softwood was determined. Theoretical substantiation of the obtained force of cutting with a disk knife is carried out. It has been established that the total effort of cutting soft wood is on average less than when sawing with round saws by 20-30%. It was also found that the smallest contact spot of the cutting disc with wood up to a contact angle with wood of 90 ° changes insignificantly and the total cutting force decreases with a decrease in the contact angle.
chip-free cutting, knife, wood, division, interaction
1. Patent No. 2726557 RF, IPC B27B 33/02. Cutting disc for softwood: no.2019107993: app. 20.03.2019: publ. 07/14/2020 / Ivanovsky Vladimir Pavlovich, Platonov Alexey Dmitrievich, Volgankin Alexander Mikhailovich, Nedikov Roman Anatolyevich; Patent holder (s): Voronezh State Forestry University named after G.F. Morozov. - 2020. - eLIBRARY. - Bul. No. 20;
2. Lulu X, Ye X, Baokang D, Zhangning Ye, Chunde J, Qingfeng S and Xiaohong Yu 2019 In-situ anchoring of Fe3O4 / ZIF-67 dodecahedrons in highly compressible wood aerogel with excellent microwave absorption properties. Materials & Design, Volume 182, 2019, 108006, ISSN 0264-1275, https://doi.org/10.1016/j.matdes.2019.108006;
3. Zhe Q, Zefang X, Likun G, Jian Li, Haigang W, Yonggui Wa and Yanjun X 2019 Transparent wood bearing a shielding effect to infrared heat and ultraviolet via incorporation of modified antimony-doped tin oxide nanoparticles. Composites Science and Technology, Volume 172, 2019, Pages 43-48, ISSN 0266-3538, https://doi.org/10.1016/j.compscitech.2019.01.005;
4. Christian Brischke and Lone Ross Gobakken 2020 Protecting wood infrastructure and mass timber buildings. Wood Material Science & Engineering, 15: 6, 325, DOI: 10.1080 / 17480272.2020.1799242;
5. Rahayu, Istie & Darmawan, Wayan & Zaini, Lukmanul & Prihatini, Esti. 2019 Characteristics of fast-growing wood impregnated with nanoparticles. Journal of Forestry Research. 31.1-9. 10.1007 / s11676-019-00902-3;
6. Sadrtdinov A.R., Safin R.G., Timerbaev N.F., Ziatdinova D.F. and Saprykina N.A. 2016 The development of equipment for the disposal of solid organic waste and optimization of its operation IOP Conference Series: Materials Science and Engineering 142 (1), 012095. DOI: 10.1088 / 1757-899X / 142/1/012095;
7. Shamaev V.A., Parinov D.A. and Polilov, A. 2018 Investigation of sliding bearings made of modified wood for highly loaded friction units. Journal of Mechanical Engineering and Reliability. 47.168-172. 10.3103 / S1052618818020115;
8. Shamaev V, Parinov D and Medvedev I 2018 Wood Modification by Pressing. Engineering Studies, Issue 3 (2), Volume 10. Taylor & Francis, 2018.708-718 pp.;
9. Shamaev V, Parinov D and Medvedev I 2018 Study Of Modified Wood As A Bearing Material For Machine-Building. International Conference on Aviamechanical Engineering and Transport (AviaENT 2018), Advances in Engineering Research, volume 158, 478-482 pp.;
10. Shamaev V, Medvedev I, Parinov D, Shakirova O and Anisimov M 2018 Investigation of modified wood as a material power transmission pole produced by self-pressing method. Acta Facultatis Xylologiae Zvolen, volume 60, No. 2, 2018, 25-32 pp. DOI: 10.17423 / afx.2018.60.2.02;
11. James A. Brient, Mark J. Manning and Mike H. Freeman 2020 Copper naphthenate - protecting America's infrastructure for over 100 years and its potential for expanded use in Canada and Europe, Wood Material Science & Engineering, 15: 6, 368- 376, DOI: 10.1080 / 17480272.2020.1837948;
12. Li B., Ma H., Yu X., Zeng J., Guo X., Wen B. (2019). Nonlinear vibration and dynamic stability analysis of rotor-blade system with nonlinear supports. Archive of Applied Mechanics. doi:10.1007/s00419-019-01509-0
13. Yu K., Ma H., Han H. (et al.) (2019). Second order multi-synchrosqueezing transform for rub-impact detection of rotor systems. Mechanism and Machine Theory, 140, 321– 349. doi:10.1016/j.mechmachtheory.2019.06.007
14. Yu K., Fu Q., Ma H., Lin T. R., Li X. (2020). Simulation data driven weakly supervised adversarial domain adaptation approach for intelligent cross-machine fault diagnosis. Structural Health Monitoring, 147592172098071. doi:10.1177/1475921720980718
15. Li Y., Luo Z., Wang J., Ma H., Yang D. (2021). Numerical and experimental analysis of the effect of eccentric phase difference in a rotor-bearing system with bolted-disk joint. Nonlinear Dynamics, 105(3), 2105– 2132. doi:10.1007/s11071-021-06698-4
16. Liu Y., Zhao Y., Li J., Lu H., Ma H. (2019). Feature extraction method based on NOFRFs and its application in faulty rotor system with slight misalignment. Nonlinear Dynamics. doi:10.1007/s11071-019-05340-8
17. Ma X., Ma H., Qin H., Guo X., ZhaoC., Yu M. (2021). Nonlinear vibration response characteristics of a dual-rotor-bearing system with squeeze film damper. Chinese Journal of Aeronautics, 34(10), 128–147. doi:10.1016/j.cja.2021.01.013
18. Aghayari J., Bab S., Safarpour P., Rahi A. (2021). A novel modal vibration reduction of a disk-blades of a turbine using nonlinear energy sinks on the disk. Mechanism and Machine Theory, 155, 104048. doi:10.1016/j.mechmachtheory.2020.104048
19. Xiong C., Huang Z., Shi H., Yang R., Dai X., He W. (2021). 3D Cutting Force Model of a Stinger PDC Cutter: Considering Confining Pressure and the Thermal Stress. Rock Mechanics and Rock Engineering, 54(9), 5001– 5022. doi:10.1007/s00603-021-02494-z
20. Farrokh E. (2021). Cutter change time and cutter consumption for rock TBMs. Tunnelling and Underground Space Technology, 114, 104000. doi:10.1016/j.tust.2021.104000
21. Liu Y., Han J., Zhao S. (et al.) (2019). Study on the Dynamic Problems of Double-Disk Rotor System Supported by Deep Groove Ball Bearing. Shock and Vibration, 2019, 1–12. doi:10.1155/2019/8120569.
