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Hiroyasu Iwabe - One of the best experts on this subject based on the ideXlab platform.
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analysis of cutting mechanism by Ball End Mill using 3d cad
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing, 2006Co-Authors: Hiroyasu Iwabe, Keisuke Shimizu, Mitunori SasakiAbstract: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 Ed 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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analysis of cutting mechanism of Ball End Mill using 3d cad chip area by inclined surface machining and cutting performance based on evaluation value
Transactions of the Japan Society of Mechanical Engineers. C, 2006Co-Authors: Hiroyasu Iwabe, Keisuke Shimizu, Minoru SasakiAbstract:In this paper, the chip area by a Ball End Milling for an inclined surface with a contour path method is analyzed. The cutting process of a Ball End Mill is very complex due to the existence of a cutting edge on the hemisphere surface which is the End part of the cutter. Then, in this study, at first the modeling of a cutter, an edge, a rake surface and a workpiece with inclined surface are carried out using 3 D-CAD. Secondly, the chip body which will be removed is defined by the interference of the tool and the workpiece models and the chip area which is changed during machining process is calculated by the interference of the rake surface and the chip body. The influence of the cutting method and the direction of pick feed on the behavior of chip area and the influence of the inclination angle of machined surface on the maximum chip area are shown. And, the evaluation value Ed 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 and compared each calculated value. The evaluation value of the condition by step down pick feed, the workpiece inclination angle α=20° shows minimum, so a good cutting performance would be expected for these cutting conditions.
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effect of tool stiffness upon tool wear in high spindle speed Milling using small Ball End Mill
Precision Engineering-journal of The International Societies for Precision Engineering and Nanotechnology, 2001Co-Authors: Takashi Miyaguchi, Etsuo Takeoka, Masami Masuda, Hiroyasu IwabeAbstract:Longer tool life can be tentatively achieved at a higher feed rate using a small Ball End Mill in high spindle speed Milling (over several tens of thousands of revolutions per minute), although the mechanism by which tool life is improved has not yet been clarified. In the present paper, the mechanism of tool wear is investigated with respect to the deviation in cutting force and the deflection of a Ball End Mill with two cutting edges. The vector loci of the cutting forces are shown to correlate strongly with wear on both cutting edges of Ball End Mills having various tool stiffnesses related to the tool length. The results clarified that tool life can be prolonged by reducing tool stiffness, because the cutting forces are balanced, resulting in even tool wear on both cutting edges as tool stiffness is lowered to almost the breakage limit of the End Mill. A Ball End Mill with an optimal tool length showed significant improvement in tool life in the Milling of forging die models.
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Effect of tool stiffness upon tool wear in high spindle speed Milling using small Ball End Mill
Precision Engineering, 2001Co-Authors: Takashi Miyaguchi, Etsuo Takeoka, Masami Masuda, Hiroyasu IwabeAbstract:Longer tool life can be tentatively achieved at a higher feed rate using a small Ball End Mill in high spindle speed Milling (over several tens of thousands of revolutions per minute), although the mechanism by which tool life is improved has not yet been clarified. In the present paper, the mechanism of tool wear is investigated with respect to the deviation in cutting force and the deflection of a Ball End Mill with two cutting edges. The vector loci of the cutting forces are shown to correlate strongly with wear on both cutting edges of Ball End Mills having various tool stiffnesses related to the tool length. The results clarified that tool life can be prolonged by reducing tool stiffness, because the cutting forces are balanced, resulting in even tool wear on both cutting edges as tool stiffness is lowered to almost the breakage limit of the End Mill. A Ball End Mill with an optimal tool length showed significant improvement in tool life in the Milling of forging die models. © 2001 Elsevier Science Inc.
Takashi Matsumura - One of the best experts on this subject based on the ideXlab platform.
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influence of tool inclination on brittle fracture in glass cutting with Ball End Mills
Journal of Materials Processing Technology, 2008Co-Authors: Takashi MatsumuraAbstract:Glass Milling is discussed with influences of tool inclination on brittle fracture. Cutting tests are performed to observe surfaces in the up-cut and the down-cut processes with a Ball End Mill inclined in the feed direction of the cutter. Brittle fracture occurs in the down-cut process at high feed rates. Then the machined surfaces in cutting with the Ball End Mills tilted in the vertical plane with respect to the feed direction are associated with those of the up-cut and the down-cut processes. The cutting forces are also measured to discuss brittle fracture with the change of the undeformed chip thickness. The scratches on the surface finished with the tilted Ball End Mill are shown in an analytical model with a notched edge shape. The maximum feed rates at which brittle fracture does not occur are shown with the tool inclination in the cutting tests.
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cutting process of glass with inclined Ball End Mill
Journal of Materials Processing Technology, 2008Co-Authors: Takashi MatsumuraAbstract:Abstract Cutting processes with Ball End Mills are discussed for machining microgrooves on glasses. A surface is finished in undeformed chip thickness less than 1 μm at the beginning and at the End of the cut during the cutter rotation. The Milling process is applied to glass machining. A crack-free surface can be finished in a large axial depth of cut more than 10 μm. Because glass undergoes almost no elastic deformation, roughness on a cutting edge in glass machining has a larger influence on surface finish than that of metal machining. The rotational axis of the tool is inclined to improve the surface finish. The cutting processes are modeled to show the effect of the tool inclination on the machined surface with considering the edge roughness. The tool inclination compensates for deterioration of the surface finish induced by the edge roughness in the presented model. The improvement of the surface finish is verified in the cutting experiments with the tool inclination. The orthogonal grooves 15–20 μm deep and 150–175 μm wide, then, are machined with the crack-free surfaces to prove efficiency and surface quality in the Milling process.
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Cutting process of glass with inclined Ball End Mill
Journal of Materials Processing Technology, 2008Co-Authors: Takashi Matsumura, Takenori OnoAbstract:Cutting processes with Ball End Mills are discussed for machining microgrooves on glasses. A surface is finished in undeformed chip thickness less than 1 μm at the beginning and at the End of the cut during the cutter rotation. The Milling process is applied to glass machining. A crack-free surface can be finished in a large axial depth of cut more than 10 μm. Because glass undergoes almost no elastic deformation, roughness on a cutting edge in glass machining has a larger influence on surface finish than that of metal machining. The rotational axis of the tool is inclined to improve the surface finish. The cutting processes are modeled to show the effect of the tool inclination on the machined surface with considering the edge roughness. The tool inclination compensates for deterioration of the surface finish induced by the edge roughness in the presented model. The improvement of the surface finish is verified in the cutting experiments with the tool inclination. The orthogonal grooves 15-20 μm deep and 150-175 μm wide, then, are machined with the crack-free surfaces to prove efficiency and surface quality in the Milling process. © 2007 Elsevier B.V. All rights reserved.
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Influence of tool inclination on brittle fracture in glass cutting with Ball End Mills
Journal of Materials Processing Technology, 2008Co-Authors: Takenori Ono, Takashi MatsumuraAbstract:Glass Milling is discussed with influences of tool inclination on brittle fracture. Cutting tests are performed to observe surfaces in the up-cut and the down-cut processes with a Ball End Mill inclined in the feed direction of the cutter. Brittle fracture occurs in the down-cut process at high feed rates. Then the machined surfaces in cutting with the Ball End Mills tilted in the vertical plane with respect to the feed direction are associated with those of the up-cut and the down-cut processes. The cutting forces are also measured to discuss brittle fracture with the change of the undeformed chip thickness. The scratches on the surface finished with the tilted Ball End Mill are shown in an analytical model with a notched edge shape. The maximum feed rates at which brittle fracture does not occur are shown with the tool inclination in the cutting tests. © 2007 Elsevier B.V. All rights reserved.
Takashi Miyaguchi - One of the best experts on this subject based on the ideXlab platform.
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effect of tool stiffness upon tool wear in high spindle speed Milling using small Ball End Mill
Precision Engineering-journal of The International Societies for Precision Engineering and Nanotechnology, 2001Co-Authors: Takashi Miyaguchi, Etsuo Takeoka, Masami Masuda, Hiroyasu IwabeAbstract:Longer tool life can be tentatively achieved at a higher feed rate using a small Ball End Mill in high spindle speed Milling (over several tens of thousands of revolutions per minute), although the mechanism by which tool life is improved has not yet been clarified. In the present paper, the mechanism of tool wear is investigated with respect to the deviation in cutting force and the deflection of a Ball End Mill with two cutting edges. The vector loci of the cutting forces are shown to correlate strongly with wear on both cutting edges of Ball End Mills having various tool stiffnesses related to the tool length. The results clarified that tool life can be prolonged by reducing tool stiffness, because the cutting forces are balanced, resulting in even tool wear on both cutting edges as tool stiffness is lowered to almost the breakage limit of the End Mill. A Ball End Mill with an optimal tool length showed significant improvement in tool life in the Milling of forging die models.
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Effect of tool stiffness upon tool wear in high spindle speed Milling using small Ball End Mill
Precision Engineering, 2001Co-Authors: Takashi Miyaguchi, Etsuo Takeoka, Masami Masuda, Hiroyasu IwabeAbstract:Longer tool life can be tentatively achieved at a higher feed rate using a small Ball End Mill in high spindle speed Milling (over several tens of thousands of revolutions per minute), although the mechanism by which tool life is improved has not yet been clarified. In the present paper, the mechanism of tool wear is investigated with respect to the deviation in cutting force and the deflection of a Ball End Mill with two cutting edges. The vector loci of the cutting forces are shown to correlate strongly with wear on both cutting edges of Ball End Mills having various tool stiffnesses related to the tool length. The results clarified that tool life can be prolonged by reducing tool stiffness, because the cutting forces are balanced, resulting in even tool wear on both cutting edges as tool stiffness is lowered to almost the breakage limit of the End Mill. A Ball End Mill with an optimal tool length showed significant improvement in tool life in the Milling of forging die models. © 2001 Elsevier Science Inc.
Etsuo Takeoka - One of the best experts on this subject based on the ideXlab platform.
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effect of tool stiffness upon tool wear in high spindle speed Milling using small Ball End Mill
Precision Engineering-journal of The International Societies for Precision Engineering and Nanotechnology, 2001Co-Authors: Takashi Miyaguchi, Etsuo Takeoka, Masami Masuda, Hiroyasu IwabeAbstract:Longer tool life can be tentatively achieved at a higher feed rate using a small Ball End Mill in high spindle speed Milling (over several tens of thousands of revolutions per minute), although the mechanism by which tool life is improved has not yet been clarified. In the present paper, the mechanism of tool wear is investigated with respect to the deviation in cutting force and the deflection of a Ball End Mill with two cutting edges. The vector loci of the cutting forces are shown to correlate strongly with wear on both cutting edges of Ball End Mills having various tool stiffnesses related to the tool length. The results clarified that tool life can be prolonged by reducing tool stiffness, because the cutting forces are balanced, resulting in even tool wear on both cutting edges as tool stiffness is lowered to almost the breakage limit of the End Mill. A Ball End Mill with an optimal tool length showed significant improvement in tool life in the Milling of forging die models.
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Effect of tool stiffness upon tool wear in high spindle speed Milling using small Ball End Mill
Precision Engineering, 2001Co-Authors: Takashi Miyaguchi, Etsuo Takeoka, Masami Masuda, Hiroyasu IwabeAbstract:Longer tool life can be tentatively achieved at a higher feed rate using a small Ball End Mill in high spindle speed Milling (over several tens of thousands of revolutions per minute), although the mechanism by which tool life is improved has not yet been clarified. In the present paper, the mechanism of tool wear is investigated with respect to the deviation in cutting force and the deflection of a Ball End Mill with two cutting edges. The vector loci of the cutting forces are shown to correlate strongly with wear on both cutting edges of Ball End Mills having various tool stiffnesses related to the tool length. The results clarified that tool life can be prolonged by reducing tool stiffness, because the cutting forces are balanced, resulting in even tool wear on both cutting edges as tool stiffness is lowered to almost the breakage limit of the End Mill. A Ball End Mill with an optimal tool length showed significant improvement in tool life in the Milling of forging die models. © 2001 Elsevier Science Inc.
Masami Masuda - One of the best experts on this subject based on the ideXlab platform.
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effect of tool stiffness upon tool wear in high spindle speed Milling using small Ball End Mill
Precision Engineering-journal of The International Societies for Precision Engineering and Nanotechnology, 2001Co-Authors: Takashi Miyaguchi, Etsuo Takeoka, Masami Masuda, Hiroyasu IwabeAbstract:Longer tool life can be tentatively achieved at a higher feed rate using a small Ball End Mill in high spindle speed Milling (over several tens of thousands of revolutions per minute), although the mechanism by which tool life is improved has not yet been clarified. In the present paper, the mechanism of tool wear is investigated with respect to the deviation in cutting force and the deflection of a Ball End Mill with two cutting edges. The vector loci of the cutting forces are shown to correlate strongly with wear on both cutting edges of Ball End Mills having various tool stiffnesses related to the tool length. The results clarified that tool life can be prolonged by reducing tool stiffness, because the cutting forces are balanced, resulting in even tool wear on both cutting edges as tool stiffness is lowered to almost the breakage limit of the End Mill. A Ball End Mill with an optimal tool length showed significant improvement in tool life in the Milling of forging die models.
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Effect of tool stiffness upon tool wear in high spindle speed Milling using small Ball End Mill
Precision Engineering, 2001Co-Authors: Takashi Miyaguchi, Etsuo Takeoka, Masami Masuda, Hiroyasu IwabeAbstract:Longer tool life can be tentatively achieved at a higher feed rate using a small Ball End Mill in high spindle speed Milling (over several tens of thousands of revolutions per minute), although the mechanism by which tool life is improved has not yet been clarified. In the present paper, the mechanism of tool wear is investigated with respect to the deviation in cutting force and the deflection of a Ball End Mill with two cutting edges. The vector loci of the cutting forces are shown to correlate strongly with wear on both cutting edges of Ball End Mills having various tool stiffnesses related to the tool length. The results clarified that tool life can be prolonged by reducing tool stiffness, because the cutting forces are balanced, resulting in even tool wear on both cutting edges as tool stiffness is lowered to almost the breakage limit of the End Mill. A Ball End Mill with an optimal tool length showed significant improvement in tool life in the Milling of forging die models. © 2001 Elsevier Science Inc.
