Determination of Optimum Tilting Angle of Ball-End Mill in 5-Axis Control Machining. In the Case of Spherical Surface Machining Based on Finished Surface Roughness.

Zhao, Xiaoming; Tsutsumi, Masaomi; Koreta, Noriyuki; Ge, Dongfang

doi:10.2493/jjspe.63.992

Cited by 7 publications

(2 citation statements)

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“…The geometrical scallop profiles have also been considered for the determination of efficient and accurate path intervals between successive tool paths [10][11][12][13][14][15]. More recently, Zhao et al [16][17][18] analysed the effect of cutter tilting angle on finished surface roughness and texture in multi-axis milling using a Z-map simulation. Furthermore, the concepts of optimum and critical tilting angles for unidirectional and bidirectional feed machining were proposed in their works.…”

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confidence: 99%

A new approach to analysing machined surfaces by ball-end milling, part II:

Jung

Yang

Lee

2004

Int J Adv Manuf Technol

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This paper presents a procedure for the evaluation of maximum surface roughness using the ridges analysed in part 1 of this paper. Maximum surface roughness is predicted for the plane cutting mode of ball-end milling. Two types of cutting modes, i.e., unidirectional mode and bidirectional mode, are investigated. The various cutting conditions in plane cutting are simplified employing the concept of the path interval ratio, f p / f t . In addition, mathematical expressions for calculating maximum surface roughness have been described for each case. The predicted results show that the geometrical surface roughness of the bidirectional mode is usually larger than that of the unidirectional mode differing from the results of the conventional roughness model. Maximum roughness and the shapes of the cut remainder are affected by path interval, feedrate and cutting mode. Experiments are carried out at various cutting conditions for both cutting modes. A high level of agreement between the expected surface roughness and measured value confirms the validity of the proposed method.

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A new approach to analysing machined surfaces by ball-end milling, part II:

Jung

Yang

Lee

2004

Int J Adv Manuf Technol

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“…In spite of the difficult cutting mechanism with a ball end mill, many papers reported and they are grouped as follows. (1) cutting force measurement and prediction (3) - (9) , (2) generation of machined surface (10) - (16) , (3) cutting performance by a special tools (17) - (19) , (4) regenerative cutter vibration (20), (21) , (5) tool life and machining accuracy (22) - (25) , (6) fabrica-tion of tools and cutting characteristics (26), (27) and (7) surface roughness and optimum cutting condition (28), (29) . The above studies indicate much useful knowledge, but it is not clear as to chip area accurately during cutting.…”

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confidence: 99%

Analysis of Cutting Mechanism by Ball End Mill Using 3D-CAD (Chip Area by Inclined Surface Machining and Cutting Performance Based on Evaluation Value)

Iwabe

Shimizu²,

Sasaki³

2006

JSME Int. J., Ser. C

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This paper deals with an analysis of the chip area by ball end milling of an inclined surface using a contour path method. At first, the modeling of a cutter, an edge, a rake surface and a workpiece with an inclined surface are carried out using 3D-CAD. Secondly, the chip area is calculated by the interference of the rake surface and the chip volume. The influence of the cutting method and the direction of pick feed on the behavior of the chip area and the influence of the inclination angle of the machined surface on the maximum chip area are shown. And, the evaluation value E d for cutting performance with the multiple by the chip area and the distance from the spindle axis to the center of gravity of the chip area is proposed. The evaluation value of the condition by stepping up pick feed and the inclination angle α = 20• shows minimum, so a good cutting performance would be expected for these cutting conditions.

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