SO SÁNH VÀ LỰA CHỌN CẤU TRÚC HỖ TRỢ MỞ RỘNG KHẢ NĂNG CÔNG NGHỆ CỦA MÁY PHAY KIỂU ROBOT SONG SONG A3 VÀ Z3=COMPARISON AND SELECTION OF A3 AND Z3 PARALLEL ROBOT STYLE SUPPORT STRUCTURES TO EXPAND THE TECHNOLOGICAL CAPABILITIES OF MILLING MACHINE

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Tác giả: Thị Trang Nhung Nguyễn, Thành Long Phạm

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2024

Mô tả vật lý: tr.80 - 86

Bộ sưu tập: Báo, Tạp chí

ID: 484518

Thêm vào giỏ

Các máy công cụ điều khiển số CNC ba trục thường bị giới hạn khả năng công tác khi gia công các bề mặt không gian ba chiều. Trong trường hợp này người ta thường mở rộng chuỗi động học của chúng bằng cách sử dụng một đồ gá có cấu trúc của một robot song song, được gọi là máy công cụ lai. Trên thực tế khi lựa chọn đồ gá mở rộng này có thể có nhiều hơn một lựa chọn và việc so sánh sự phù hợp giữa các ứng viên theo một loạt các chỉ tiêu khác nhau để chọn được phương án tối ưu thường không đơn giản. Với việc nghiên cứu và so sánh hai cấu trúc được sử dụng phổ biến trong ngành công nghiệp là A3 và Z3, bài báo này đề xuất một giải pháp so sánh các chỉ tiêu liên quan tới góc áp lực truyền. Trên cơ sở đó đưa ra được lựa chọn cấu trúc hỗ trợ mở rộng khả năng công nghệ của máy phay phù hợp nhất. Qua nghiên cứu thấy rằng trong cùng một không gian đối chứng, cấu trúc A3 vượt trội hơn cấu trúc Z3 thông thường, là lựa chọn tốt hơn trong trường hợp này. Phương pháp mà chúng tôi đề xuất ở đây là công cụ phù hợp hỗ trợ cho ra quyết định trong những trường hợp tương tự.Three-axis CNC numerical control machine tools often have limited capabilities when machining three-dimensional surfaces. In this case, the kinematic chain is often extended using a fixture that has the structure of a parallel robot, called hybrid machine tools. In fact, when choosing this extension fixture, there may be more than one choice and comparing the suitability between candidates according to a series of different criteria to choose the optimal solution is often not simple. By researching and comparing two commonly used structures in industry, A3 and Z3, this paper proposes a solution to compare criteria related to pressure transmission angle. On that basis, the most suitable support structure to expand the technological capabilities of the milling machine can be selected. Through research, it was found that in the same control space, the A3 head outperforms the common Sprint Z3 head, being the better choice in this case. The proposed method is a suitable tool to support decision making in similar cases.

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