Influence of cutting edge geometry and cutting edge radius on the stability of micromilling processes

Biermann, Dirk; Baschin, Alexander

doi:10.1007/s11740-009-0188-7

Cited by 46 publications

(17 citation statements)

References 13 publications

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“…The authors hypothesize that the reason for this trend is that of positional error damping caused by increased ploughing forces and vibrational error damping caused by viscoelastic shear-damping behavior, as depicted below in Figure 12. A roughness-reducing effect similar to this has also been noted in milling [36]. Inspection of the difference between short and long evaluation length roughness values reveals that MTE (over a given evaluation length) causes a constant offset value of roughness deviation for a given tool/machine combination, as shown in [9].…”

Section: Machine Tool Error Incorporationsupporting

confidence: 56%

“…However, chatter is deemed outside the scope of this work, as it is generally not acceptable in finish machining. Recently, observations were made by Biermann and Baschin [36] in micromilling surfaces regarding improved roughness due to process damping related to tool edge radius. Yusoff et al [37] remarked that the role of edge geometry was significant in the damping of 'macroscopic' milling.…”

Section: Introductionmentioning

confidence: 99%

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An Iterative Size Effect Model of Surface Generation in Finish Machining

Brown

Schoop

2020

JMMP

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In this work, a geometric model for surface generation of finish machining was developed in MATLAB, and subsequently verified by experimental surface roughness data gathered from turning tests in Ti-6Al4V. The present model predicts the behavior of surface roughness at multiple length scales, depending on feed, nose radius, tool edge radius, machine tool error, and material-dependent parameters—in particular, the minimum effective rake angle. Experimental tests were conducted on a commercial lathe with slightly modified conventional tooling to provide relevant results. Additionally, the model-predicted roughness was compared against pedigreed surface roughness data from previous efforts that included materials 51CrV4 and AL 1075. Previously obscure machine tool error effects have been identified and can be modeled within the proposed framework. Preliminary findings of the model’s relevance to subsurface properties have also been presented. The proposed model has been shown to accurately predict roughness values for both long and short surface roughness evaluation lengths, which implies its utility not only as a surface roughness prediction tool, but as a basis for understanding three-dimensional surface generation in ductile-machining materials, and the properties derived therefrom.

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Section: Machine Tool Error Incorporationsupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

An Iterative Size Effect Model of Surface Generation in Finish Machining

Brown

Schoop

2020

JMMP

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“…Nhiều kỹ thuật khác nhau để xác định các đặc tính động học của kết cấu Nâng cao đặc tính động lực học của kết cấu máy tốc độ cao Nguyễn Hữu Lộc, Trần Văn Thùy M máy đã được trình bày. Các phương pháp đặc trưng tiêu biểu để phân tích động học kết cấu máy là phương pháp phân tích phần tử hữu hạn (FEM) [10][11][12][13] và phân tích thực nghiệm [14,15]. Nghiên cứu này trình bày việc thiết kế và phân tích máy CNC có kết cấu dạng giàn với tốc độ quay lớn nhất của trục chính đạt trong khoảng (6.000÷24.000) vòng/phút và tương ứng với tần số dao động riêng của kết cấu máy lớn hơn (100÷400) Hz nhằm nâng cao độ cứng cho kết cấu máy, tăng khả năng chống rung động khi máy làm việc ở tốc độ cao và tránh hiện tượng cộng hưởng để đạt được chất lượng bề mặt gia công tốt nhất.…”

Section: Từ Khóa-phân Tích Kết Cấu Phân Tích Dao độNg Tần Số Dao độunclassified

Advances in the dynamic characteristics of high -speed machine structure

Nguyen

Tran

2017

Sci. Tech. Dev. J.

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The quality of machining is dependent on the machine’s dynamic behavior throughout the operating process. Because of the loads or vibration during operation, the rigidity of the machine structure can be reduced. Therefore, the study of advances in the dynamic characteristics has great significance for the development of machine tools, especially for high-speed machines. This paper presents the design and analysis of a rigid gantry structure with a spindle speed in the range of (6.000 ÷ 24.000)rpm, corresponding to the natural frequency of the machine structure more than (100 ÷ 400)Hz. Use CAE (computer-aided engineering) analysis software to analyze the natural frequency of machine structure. The research results show that the machine structure will have good stiffness, high vibration resistance and avoid resonance to achieve the best machining surface. In addition, it is the basis for selection of cutting mode suitable for the machining process in order to improve the reliability and efficiency of work of the machine structure and the accuracy of the processed products.

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“…However, the limiting factor is that the bandwidth of most force transducers and dynamometers is lower than the tooth-passing frequency at higher rotational speeds [8,33,56,93]. However, an AE sensor bandwidth of 100 kHz-1 MHz provides an operating region well above the tooth-passing frequencies, and signal quality is not affected by the milling process dynamics [33,56,93,94]. 8.21) in micro-end-milling.…”

Section: Dynamics Of Micro-end-millingmentioning

confidence: 99%