TỐI ƯU MỘT SỐ THÔNG SỐ CỦA ĐÁ MÀI VÀ CHẾ ĐỘ CẮT KHI MÀI HỚT LƯNG RĂNG DAO PHAY BÁNH RĂNG CÔN CONG THEO CHỈ TIÊU NHÁM BỀ MẶT

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Tác giả: Huy Kiên Nguyễn, Văn Đông Phạm, Vệ Quốc Trần

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học & Công nghệ - Trường Đại học Công nghiệp Hà Nội, 2023

Mô tả vật lý: tr.59

Bộ sưu tập: Metadata

ID: 337833

Thêm vào giỏ Liên kết toàn văn

Nhám bề mặt là một trong những chỉ tiêu đánh giá chất lượng bề mặt chi tiết sau khi gia công, đặc biệt nhám bề mặt hớt lưng Acsimet ảnh hưởng trực tiếp đếnchất lượng lưỡi cắt, tính cắt của răng dao dụng cụ cắt và chất lượng sườn răng của bánh răng côn cong hệ Gleason sau khi gia công.Việc tối ưu hóa, lựa chọn đá mài Hải Dương, thông số độ hạt đá mài (G = 80
100
120), độ cứng đá mài (Hđ) gồm ba mức MV2, MV1, TB2
Vận tốc đá màiVđ = 16m/s, 20m/s, 24m/s và bước tiến S = 2,08m/ph
3,12m/ph
4,16m/ph là giải pháp đảm bảo hài hòa giữa các thông số đầu vào (G, Hđ, Vđ, S), đáp ứng yêu cầuchất lượng bề mặt acsimet theo chỉ tiêu nhám bề mặt hớt lưng của răng dao sau khi gia công.Sử dụng phương pháp Taguchi xây dựng ma trận thực nghiệm L27, kết quả tính toán được bộ thông số tối ưu G = 120, Vđ = 24m/s, S = 2,08m/ph và Hđ = MV2 vớigiá trị nhám tối ưu Ra = 0,188µm
Thực nghiệm kiểm chứng với các giá trị thông số đầu vào tối ưu, kết quả Ra = 0,197µm, sai số giữa kết quả tính toán và kết quả thựcnghiệm kiểm chứng là 4,56%.Kết quả nghiên cứu thực nghiệm, cho phép lựa chọn bộ thông số tối ưu G = 120, Vđ = 24m/s, S = 2,08m/ph và Hđ = MV2 để gia công mặt hớt lưng acsimet răngdao phay bánh răng côn cong hệ Gleason đảm bảo yêu cầu nhám bề mặt và độ tin cậySurface roughness is one of the criteria to evaluate the quality of the part's surface after machining, especially the Archimedean surface roughness directly affectson the quality of the cutting teeth, the cutting properties of the cutting teeth and the quality of the cutting teeth tooth rib of the Gleason bevel gear after machining.In this study, Hai Duong grinding wheel was selected with the graininess grinding wheel of (G = 80, 100, 120) and the grinding wheel hardness of (Hđ = MV2,MV1, TB2) to machine the bevel gear milling teeth. The cutting parameters were selected including the grinding wheel velocity of (Vđ = 16m/s, 20m/s, 24m/s) andfeedrate of (S = 2.08m/min, 3.12m/min, 4.16m/min). The optimization process is carried out to find a solution to ensure a harmonious relationship between the inputparameters (G, Hđ, Vđ, S) and to meet the requirement of Acsimet surface quality according to the surface roughness criteria of the milling teeth after machining.Taguchi method is used to design the experimental matrix L27 with 27 experiments. The results showed that the optimal set of parameters is G = 120, Vđ = 24m/s,S = 2.08m/min, and Hđ = MV2. The optimum roughness value of surface roughness (Ra) was determined to be 0.188 µm. The verification experiments were conductedwith the optimal input parameter values, the average value of measured results of surface roughness was Ra = 0.197µm. The difference between the optimalcalculated value and experimental value is 4.56%.The experimental results show that the optimal set of parameters including G = 120, Vđ = 24m/s, S = 2.08m/min, and Hđ = MV2 can be applied when relievinggrinding the Archimedean surface of curved bevel teeth of Gleason system gears to ensure the required surface roughness and reliability.

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