Luận văn thạc sĩ Kỹ thuật cơ khí: Nghiên cứu công suất cắt và chế độ cắt tối ưu khi phay gỗ

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OPTIMIZATION OF CUTTING POWER AND PARAMETERS IN WOOD MILLING

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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 5 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 2 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 4 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

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1.2 Tәng quan tài liӋu 1

1.3 Lý do chӑQÿӅ tài và mөc tiêu nghiên cӭu 6

DANH MӨC CÁC CÔNG TRÌNH KHOA HӐC 76

TÀI LIӊU THAM KHҦO 77

PHӨ LӨC 81

B̫ng 4.7 B̫ng nghi͏m sau khi gi̫i bài toán 1 b̹ng Kuhn ± Tucker 54

B̫ng 4.8 B̫ng nghi͏m sau khi gi̫i bài toán 2 b̹ng Kuhn ± Tucker 56

B̫ng 4.9 B͡ thông s͙ t͙L˱XJLiWKjQh gia công k͇t hͫp công sṷt c̷t 63

B̫ng 4.10 B̫ng s͙ li͏u quy ho̩FKÿ˱ͥng cong b͡ thông s͙ 1 66

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B̫ng 4.12 B̫ng s͙ li͏u quy ho̩FKÿ˱ͥng cong b͡ thông s͙ 2 71

DANH SÁCH HÌNH ҦNH

Hình 1.1 K͇t qu̫ th͹c nghi͏PYjÿiQKJLiFiFQKkQW͙ ̫QKK˱ͧQJÿ͇n ch̭WO˱ͫng

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Hình 1.4 Giá tr͓ ÿ͡ nhám Rk WKD\ÿ͝i cho 4 lo̩i g͟ NKLEiQNtQKPNJLWKD\ÿ͝i [4] 4

Hình 1.5 Biên d̩ng b͉ m̿t cͯa g͟ s͛i Oak khi s͵ dͭng dao nh͕n ho̿c cùn [4] 5

Hình 1.6 ̪QKK˱ͧng cͯDO˱ͫng ti͇QGDRUăQJÿ͇Qÿ͡ nhám b͉ m̿t [5] 5

Hình 2.1 Các lo̩LJLDF{QJF˯NKtÿL͋n hình trong gia công g͟ [7] 9

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Hình 2.4 Các c̩nh cͯa dͭng cͭ dao và bán kính làm tròn c̩nh dao [7] 12

Hình 2.5 Quá trình t̩o phoi khi phay g͟ vͣLJyFQJKLrQJO˱ͩLGDRȥ>@ 15

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Hình 3.4 ̪nh hi͋n vi cͯa loài thông (a) và loài g͟ cͱng (b) [7] 31

Hình 3.5 M̿t c̷t ngang cͯa thͣ g͟ [4] 33

Hình 3.6 Quá trình nén tác dͭng lên mép c̩nh khi gia công g͟ [7] 35

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Hình 4.5 Mi͉n công sṷt t͙L˱XEjLWRiQ 55

Hình 4.6 Phân b͙ FiFÿL͋m nghi͏m cͯa bài toán 2 57

Hình 4.7 Mi͉n t͙L˱XEjLWRiQ 58

Hình 4.8 Mi͉n t͙L˱XEjLWRiQYͣi thêm ràng bu͡c PÿF = 9,581kW 59

Hình 4.9 Mi͉n t͙L˱XEjLWRiQYͣi thêm ràng bu͡c PÿF = 12,58kW 59

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Hình 4.13 K͇t qu̫ quy ho̩ch phi tuy͇Qÿ˱ͥng cong b͡ thông s͙ 1 67

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Hình 4.15 K͇t qu̫ quy ho̩ch tuy͇QWtQKÿ˱ͥng cong b͡ thông s͙ 2 71

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