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    DRILL BIT TIP AND DRILL WITH DRILL BIT TIP, MOLD AND METHOD FOR MANUFACTURING DRILL BIT TIP
    4.
    发明公开
    DRILL BIT TIP AND DRILL WITH DRILL BIT TIP, MOLD AND METHOD FOR MANUFACTURING DRILL BIT TIP 审中-公开

    公开(公告)号：EP4212266A1

    公开(公告)日：2023-07-19

    申请号：EP22151509.1

    申请日：2022-01-14

    申请人： Drill Holding ApS

    发明人： Bauer, Bent ,  Bauer, Kim

    IPC分类号： B22F3/03 ,  B22F3/14 ,  C22C29/10 ,  E21B10/46 ,  B23B51/02 ,  B23P15/32 ,  B22F5/00

    摘要： A method and mold for manufacturing a drill-bit tip plate (40) for forming the tip of a twist drill bit (100), and atrial-bit tip plate (40) manufactured by the method. the method comprises by providing a sintering mold (1) comprising a first punch (20), a second punch (30) and a sintering die (10), the sintering die (10) having a channel (13) with a cross-sectional shape that corresponds to the cross sectional shape of the first punch (20) and second punch (30), the second punch (30) having a distal end (35) corresponding to a negative shape of the tip front end (47) and the first punch (20) having a distal end that corresponds to the negative shape of the tip rear end (48); providing an amount of sintering powder (60) to be compacted in the channel (13) and applying a force to the first punch (20) and the second punch (30) to sinter the sintering powder (60) into the tip (40), and ejecting the tip (40) from said sintering die (10) by pushing the second punch (30) into the channel (13) at least until the tip (40) is ejected from said channel (13). A drill-bit tip plate (40) with a first and a second apex (45,46) distanced from an axis of rotation (X) and having inner and outer cutting edges (42,43,65,66) with the first-and second apex (45,46) being distanced from the broad sides (58,59) of the geo-bit tip plate (40).
    It is suggested that Fig. 5 is published with the abstract.

    TOOLING ASSEMBLY FOR POWDER COMPACTING PRESS MACHINE
    5.
    发明公开
    TOOLING ASSEMBLY FOR POWDER COMPACTING PRESS MACHINE 审中-公开

    公开(公告)号：EP4124402A1

    公开(公告)日：2023-02-01

    申请号：EP21187867.3

    申请日：2021-07-27

    申请人： System 3R International AB

    发明人： Rosengren, Jonas

    IPC分类号： B23B31/107 ,  B22F3/03 ,  B30B11/02

    摘要： A tooling assembly for a powder compacting press machine including a lower punch chuck and a core rod chuck comprising:
    a lower punch having a lower punch drawbar for holding the lower punch in the lower punch chuck in the machine and a core rod having a core rod drawbar for holding the core rod in the core rod chuck,
    characterized in that, a coupling mechanism is provided to enable an operative connection of the lower punch and the core rod, the coupling mechanism comprises a male coupling element arranged on the outer surface of the core rod and a female coupling element arranged on the inner surface of the lower punch drawbar, wherein the male coupling element is an elastic element.

    PRESS TOOL AND METHOD FOR FORMING A CUTTING INSERT GREEN BODY HAVING A THROUGH HOLE
    8.
    发明公开
    PRESS TOOL AND METHOD FOR FORMING A CUTTING INSERT GREEN BODY HAVING A THROUGH HOLE 审中-公开

    公开(公告)号：EP3892401A1

    公开(公告)日：2021-10-13

    申请号：EP20168742.3

    申请日：2020-04-08

    申请人： WALTER AG

    发明人： PRESNITZ, Manuel

    IPC分类号： B22F3/03 ,  B22F5/10 ,  B30B11/00 ,  B30B11/02 ,  B30B15/02 ,  B22F5/00

    摘要： The present invention relates to a press tool and to a method for forming, by compressing a powder, a cutting insert green body (5) having a through hole (6) of length (L). The press tool comprises a cavity (4) operable to define a compression space, a first core rod (7) and second core rod (8) for together forming the through hole (6), which each have a contact surface (9) at the front end. The core rods (7, 8) both are movably arranged in both directions along a core axis (10). When both core rod (7, 8) are in a respective press position, their respective contact surfaces (9) contact each other inside the compression space, and when both the first core rod (7) and the second core rod (8) are in a respective release position, their respective contact surfaces (9) are separated by a distance that is larger than the length (L). The first core rod (7) comprises a base body (11), which comprises a forwardly facing abutment surface (17), and a piston (12), which has a a shaft (13) and a front portion in form of a head (14). The contact surface (9) of the first core rod (7) is a front end surface of the head (14). The head (14) comprises a rearwardly facing abutment surface (17). The piston (12) is movable to a plurality of extended positions and to a retracted position, in which retracted position the abutment surface (17) of the head (14) abuts against the abutment surface (17) of the base body (11). When both the first core rod (7) and the second core rod (8) are in their respective press positions, the piston (12) is in the retracted position.