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    • 3. 发明申请
    • EXPANSION TOOL FOR COLD EXPANSION OF HOLES
    • 膨胀剂用于冷胀膨胀
    • WO2007121932A1
    • 2007-11-01
    • PCT/EP2007/003464
    • 2007-04-20
    • EADS DEUTSCHLAND GMBHWÖLCKEN, PietREESE, Eggert, DJONES, Thomthy, G., B.
    • WÖLCKEN, PietREESE, Eggert, DJONES, Thomthy, G., B.
    • B23P9/02
    • B23P9/025Y10T29/4994
    • A tool (10) for cold expansion of holes comprises a body (14) which has at least a cylindrically shaped part (16) having an inner hole (24) in axial direction of the body (14). The body (14) comprises along the circumferential direction a plurality of members (18, 18a, 18b, 18c) which are movable in radial direction of the body (14), such that the outer diameter of the cylindrically shaped part (16) of the body (14) can be changed. Furthermore a core (26, 26c) is provided which is insertable into the inner hole (24), wherein at least one of the core (26, 26c) and the inner hole (24) comprises a portion (28) of changing diameter and the inner hole (24) and the core (26, 26c) get into contact with each other upon insertion of the core, such that in dependency of the depth of the insertion of the core (26, 26c) into the inner hole (24) in axial direction the members (18, 18a, 18b, 18c) move radially outwardly and the outer diameter of the cylindrically shaped part (16) of the body (14) increases.
    • 用于冷膨胀孔的工具(10)包括:主体(14),其至少具有在主体(14)的轴向方向上具有内孔(24)的圆柱形部分(16)。 主体(14)沿圆周方向包括可在主体(14)的径向方向上移动的多个构件(18,18a,18b,18c),使得圆柱形部分(16)的外径 主体(14)可以改变。 此外,提供了可插入到内孔(24)中的芯(26,26c),其中芯(26,26c)和内孔(24)中的至少一个包括改变直径的部分(28)和 当插入芯时,内孔(24)和芯(26,26c)彼此接触,使得根据芯(26,26c)插入内孔(24)的深度 )在轴向方向上,构件(18,18a,18b,18c)径向向外移动,并且主体(14)的圆柱形部分(16)的外径增加。