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1589 条记录 (耗时 0.023 秒)

    A TANGENTIAL CUTTING INSERT AND A MILLING TOOL
    74.
    发明公开
    A TANGENTIAL CUTTING INSERT AND A MILLING TOOL 审中-公开

    公开(公告)号：EP3593928A1

    公开(公告)日：2020-01-15

    申请号：EP18182674.4

    申请日：2018-07-10

    申请人： AB Sandvik Coromant

    发明人： SCHMITT, Jeremy ,  SARTON, Yannick ,  UZENOT, Hervé

    IPC分类号： B23C5/22 ,  B23C5/10 ,  B23C5/20

    摘要： The present invention relates to a tangential cutting insert (1) for a milling tool, the tangential cutting insert (1) comprising two opposing main surfaces (2, 3) having a triangular shape and three identical side surfaces (4) extending between the main surfaces (2, 3), wherein the tangential cutting insert (1) includes at least three identical and indexable major cutting edges (5) formed at the intersection of at least one of the main surfaces (2, 3) and the three identical side surfaces (4). Each side surface (4) includes three flat support surfaces (6, 7, 8) being recessed in relation to the major cutting edge (5) and arranged one after another in a longitudinal direction (9) of each side surface (4), wherein a first flat support surface (6) is disposed at a centre of each side surface (4) and is forming the lowermost recessed support surface (6) in relation to the major cutting edge (5), wherein second and third flat support surfaces (7, 8) are located on opposite sides of the first flat support surface (6) and extend at an obtuse angle (β) with the first flat support surface (6). In addition, the invention relates to a milling tool (11) having a plurality of insert seats (13) configured to receive the tangential cutting insert (1).

    ENDMILL
    78.
    发明公开
    ENDMILL 审中-公开

    公开(公告)号：EP3560645A1

    公开(公告)日：2019-10-30

    申请号：EP17889346.7

    申请日：2017-11-30

    申请人： Mitsubishi Hitachi Tool Engineering, Ltd.

    发明人： SAI Takafumi ,  BABA Makoto ,  TOKUYAMA Akira

    IPC分类号： B23C5/10

    摘要： The present invention provides an end mill including: a shaft-shaped end mill main body (2); a chip discharge groove (4) extending from a leading end to a trailing end in an axial direction of the end mill main body; a bottom blade (9) which is provided at a leading end portion in the axial direction of the end mill main body and has a spherical shape in which a rotation locus around the axis has a center on the axis; and an outer peripheral blade (5) which is provided along the chip discharge groove, and in which a rotation locus around the axis is convex outward, in which a curvature radius of the rotation locus of the outer peripheral blade is larger than a curvature radius of the rotation locus of the bottom blade, a twist angle of the outer peripheral blade is 20° or more, and a rake angle in a radial direction of the outer peripheral blade in a cross section orthogonal to the axis is -20° or more and 0° or less.

    CUTTING INSERT AND REPLACEABLE CUTTING EDGE ROTARY CUTTING TOOL
    79.
    发明公开
    CUTTING INSERT AND REPLACEABLE CUTTING EDGE ROTARY CUTTING TOOL 审中-公开

    公开(公告)号：EP3552742A1

    公开(公告)日：2019-10-16

    申请号：EP17878034.2

    申请日：2017-12-11

    申请人： Mitsubishi Hitachi Tool Engineering, Ltd.

    发明人： TOUMA Syoujirou

    IPC分类号： B23C5/20 ,  B23C5/10

    摘要： A cutting insert includes a main surface formed in a substantially parallelogram shape in a plan view and having a pair of acute angle corner portions and a pair of obtuse angle corner portions, a seating surface that faces a side opposite to the main surface, a side surface that connects the main surface and the seating surface to each other, a corner cutting edge disposed in the acute angle corner portion, and a main cutting edge and a subsidiary cutting edge which are respectively disposed in a pair of side ridge portions of the main surface located each other across the acute angle corner portion. A mounting hole into which the fixing member is inserted penetrates the main surface and the seating surface. The main cutting edge is inclined at an inclination angle equal to or larger than 8° with reference to a plane perpendicular to an axial direction of the mounting hole so as to be closer to the seating surface side, as the main cutting edge is oriented from the acute angle corner portion toward the obtuse angle corner portion. The main surface has a region inclined in a direction away from the seating surface, as the main surface is oriented from the obtuse angle corner portion toward an edge portion of the mounting hole along a diagonal line connecting the pair of obtuse angle corner portion to each other.