Nghiên cứu công suất cắt và chế độ cắt tối ưu khi phay gỗ

OPTIMIZATION OF CUTTING POWER AND PARAMETERS IN WOOD MILLING Chuyên ngành : K 8520103 : HCM 2021 PGS 21/09/2020 02/08/2021 L L i Tóm t t lu TĨM T T LU ii Tóm t t lu ABSTRACT With the current needs of both investors and customers, they want that the wooden products produced must be both fast, with good quality and reasonable price The thing to create that comes from the control in the woodworking and processing process The more this process is optimized and perfected in the production process, the higher the machining productivity will be while ensuring the output quality From there will achieve the purpose of increasing profits and reasonable prices This thesis is conducted to study the basic theory of wood milling process and methods to solve optimization problems From there, set up and solve the optimal problem to give the best machine parameter results to improve the production process to meet reality or can serve as a basis for the design of wood milling machines The content of this thesis is divided into chapters and a conclusion, each chapter includes the following contents: Chapter 1: Including the problem, the urgency, giving the reasons why we should carry out this topic and collecting some typical data from relevant studies at home and abroad Chapter 2: This chapter will introduce the theoretical foundations from which it is feasible to implement the topic, the theory consists of main parts: the basis of shaping wood milling and the optimal problem solving methods Chapter 3: This chapter will provide a theoretical overview of the main objectives and key constraints that will be relevant in Chapter as we develop the problem Chapter 4: This chapter will collect the necessary data from the input to conduct the planning to give the relevant regression equations in the optimization problem Then proceed to set up the optimization problems and give the solution equations and give the results to satisfy the established problems Applying those results to create databases that can be applied in practice Chapter 5: Conduct an evaluation of the obtained results, and analyze the advantages and disadvantages of the research in this thesis iii L L Tp.HCM, ngày tháng iv M cl c M CL C Contents L i TÓM T T LU ii ABSTRACT iii L ii M C L C v DANH SÁCH B NG BI U vii DANH SÁCH HÌNH NH viii NG QUAN .1 tv 1.2 T ng quan tài li u 1.3 Lý ch tài m c tiêu nghiên c u 1.4 Nhi m v lu K t lu LÍ THUY T .9 phay g nh hình 2.1.1 Gi i thi u chung v q trình gia cơng g phay g 2.2 K t lu nh hình 13 18 23 U V TÍNH TỐN CƠNG SU T C NHÁM B M T .24 v M cl c 3.1 Công su t c t 24 nhám b m t 29 36 K t lu 42 T L P VÀ QUY TRÌNH GI I CÁC BÀI TOÁN T PHAY G 43 4.1 D li u vào .43 4.2 L p toán t 51 4.3 Quy trình gi i toán t t qu 54 4.3.1 Bài toán 54 4.3.2 Bài toán 56 4.3.3 Bài toán 60 4.4 ng d ng k t qu 63 T QU 73 K T LU N .75 DANH M C CÁC CƠNG TRÌNH KHOA H C 76 TÀI LI U THAM KH O 77 PH L C 81 vi Danh sách b ng bi u DANH SÁCH B NG BI U B ng 1.1 Các thơng s ch gia cơng h p lí theo ch ng gia công máy CNC Sherline Model 2010 [6] B ng 3.1 Các giá tr c a h s m [9] 28 B B ng 3.3 c tính c u trúc c a m t s loài g [4] 33 ng c B t nhám b m t Rz [8] 40 c c a g Chukrasia 43 B ng 4.2 B ng gi a t tr c n, t c t v công su t c t P 44 B ng 4.3 B ng quy ho ch nhân t th c nghi m h s mi n t o phoi k [10,30] 45 B ng 4.4 B ng k t qu th c nghi m h s mi n t o phoi k [30] 45 B ng 4.5 B ng quy ho ch nhân t c B ng 4.6 B ng k t qu th c nghi nhám b m t Rz 46 nhám b m t Rz 47 B ng 4.7 B ng nghi m sau gi i toán b ng Kuhn Tucker .54 B ng 4.8 B ng nghi m sau gi i toán b ng Kuhn Tucker .56 B ng 4.9 B thông s t B ng 4.10 B ng s li u quy ho h gia công k t h p công su t c t 63 ng cong b thông s 66 B ng 4.11 B thông s t B ng 4.12 B ng s li u quy ho th t c t 68 ng cong b thông s 71 vii t l p quy trình gi i tốn t 22 1,53 20037,297 9,095 23 1,53 22721,989 10,313 24 1,53 25600,704 11,620 25 1,53 28676,711 13,016 26 1,53 31953,171 14,503 27 1,53 35433,143 16,083 28 1,53 39119,594 17,756 29 1,53 43015,406 19,524 30 1,53 47123,381 21,389 31 1,53 51446,246 23,351 32 1,5201 55986,658 25,425 33 1,4995 63210,829 28,771 34 1,4786 65730,428 29,954 35 1,4573 70938,788 32,436 36 1,4356 76374,704 35,065 37 1,4134 82040,542 37,849 38 1,3907 87938,617 40,794 39 1,3673 94071,197 43,909 40 1,3433 100440,506 47,202 41 1,3184 107048,727 50,683 42 1,2927 113897,999 54,362 43 1,2659 120990,425 58,253 phút z 69 = 1,53mm t l p quy trình gi i tốn t z z z Hình 4.14 z z z z) 70 t l p quy trình gi i toán t B ng 4.12 B ng s li u quy ho ng cong b thông s Sz (mm) 23,351 1,53 25,425 1,5201 28,771 1,4995 29,954 1,4786 32,436 1,4573 35,065 1,4356 37,849 1,4134 40,794 1,3907 43,909 1,3673 47,202 1,3433 50,683 1,3184 54,362 1,2927 58,253 1,2659 Hình 4.15 71 t l p quy trình gi i toán t Sz 1.758 0.01021T 0.00003T -Sq 99.8% nên hoàn toàn ph z 72 t qu T QU cho n 73 t qu p lí 74 K t lu n K T LU N n dao z z 75 Danh m c công trình khoa h c DANH M C CÁC CƠNG TRÌNH KHOA H C Ngu Materials Science Forum vol 1047, pp 74-81, October 2021 ©2021 Trans Tech Publications Ltd, Switzerland 76 Tài li u tham kh o TÀI LI U THAM KH O [1] https://moit.gov.vn/tintuc/phat-trien-cong-nghiep/cach-mang-cong-nghiep-4.0-giup-nganh-congnghiep-go-nang-cao.html [2] www.bnews.vn/dot-pha-tang-truong-nganh-go-bai-1-du-dia-lon/148557.html, [3] of the influence of cutting parameters on surface roughness of milled wood Forestry and Wood Technology vol 84, pp 321-325, 2013 [4] Acta Silvatica et Lignaria Hungarica vol 4, pp 81-93, 2008 [5] J Wilkowski, P Czarniak, J Górski, M Jablonski, P Pacek, P Podziewski, K Forestry and Wood Technology vol 92, pp 473-476, 2015 [6] vol 2, pp 96-104, 2015 [7] E Csanády and E Magoss Mechanics of Wood Machining Switzerland: Springer International Publishing, 2013, pp 5-9 and 192-216 [8] Materials Science vol 13, pp 47-51, 2007 [9] 2010, pp 68-69 and 76-80 77 Tài li u tham kh o [10] Ph.D thesis, Belarusian National Technical University, Minsk, 1992 [11] of Tool Wear when Milling Tropical Wood Key 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polynomials: An application for solving delay fractional optimal control Transactions of the Institute of Measurement and Control vol 41, pp 2997-3010, January 2019 [23] Tucker Model Marine Resource Economics vol 18, pp 1-14, 2003 [24] Tucker Theorem and Its Applied Mathematics vol 3, pp 1334-1350, 2012 [25] Climbing Algorithm for Application Proceedings of the 13th international conference on World Wide Web, USA, May 2004, pp 287296 [26] Photovoltaic generation systems based on Hill Climbing algor Proceedings of the 2008 International Conference on Electrical Machines, Portugal, September 2008, pp 1-5 [27] Conceptual Rainfall- Water Resources Research vol 27, pp 2467-2471, September 1991 79 Tài li u tham kh o [28] Engineering Applications of Artificial Intelligence vol 13, pp 635-644, December 2000 [29] Thi -102 [30] Materials Science Forum vol 1047, pp 74-81, October 2021 [31] N T Bình -47 80 Ph l c PH L C Sz (mm) u1 u2 u3 0,5942 0,0505 0,0485 2,0118 -0,0333 0,0744 7,0621 43 0 -0,4858 3,1792 -22,6 0 4,7536 0,197 31,5953 -3673,2 -45,3189 0 1,0008 49,9 -0,7289 0 2,2913 -14,5 -0,0141 0 0,6036 -5 0,0403 0 10 0,6965 43 0,1924 -0,3027 11 1,2659 43 -0,1752 -0,1866 81 Ph l c Sz (mm) u1 u2 u3 u4 4,0784 1,4253 43 -10,3817 0 1,8128 + 0,9563i 43 5,1909 + 2,1038i 0 1,8128 0,9563i 43 5,1909 2,1038i 0 0,6965 43 1,2169 -0,2623 1,2659 43 -1,2169 0,6583 1,223 44,5 2,6571 -1,8931 0 2,3552 -18,9 -0.5613 -0,218 0 0,88 -94,5 -0,2407 0,2198 0 0,8674 50,1 -2,0675 1,9176 0 68,1 128,2i 0,1062 0,2434i 0 68,1 + 128,2i 0,1062 + 0,2434i 0 16,5 -1,6136 0 -50,2 + 44,5i 0,8068 1,2095i 0 -50,2 44,5i 0,8068 + 1,2095i 0 10 11 12 13 14 -0,0262 + 0,1709i -0,0262 0,1709i 2,7207 -0,4383 + 2,1072i -0,4383 2,1072i -0,0131 0,0737i -0,0131 + 0,0737i -2,6363 1,2875i -2,6363 + 1,2875i 15 2,0118 -0,4887 -0,379 16 0,5942 0,4887 -0,017 17 31,972 -3634,4 -0,5326 0 18 0,5914 11,4 0,5326 0 19 2,6613 -1,3585 0,2082 20 0,2246 + 1,483i 0,6792 1,116i 0,493 0,134i 21 0,2246 1,483i 0,6792 + 1,116i 0,493 + 0,134i 82 Lí l ch trích ngang 8/2014 5/2016 8/2016 1/2019 10, Tp.HCM 8/2019 10, Tp.HCM Q TRÌNH CƠNG TÁC 83 ... dày phoi di n tích m t c t ngang phoi phay g v i dao [10] .16 l c phay d c g (a l c phay; b s bi i c a l c sau m i phay) [9] 25 Hì l c phay ngang g [9] 27 nhám b m t... v M cl c 3.1 Công su t c t 24 nhám b m t 29 36 K t lu 42 T L P VÀ QUY TRÌNH GI I CÁC BÀI TỐN T PHAY G 43 4.1 D li u vào ... gia cơng g [7] công ngh phay g d c th [8] 10 a dao phay g [7] 12 Hình 2.4 Các c nh c a d ng c dao bán kính làm trịn c nh dao [7] 12 Hình 2.5 Quá trình t o phoi phay g v .15 nh