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    • 10. 发明公开
    • VORRICHTUNG UND VERFAHREN ZUM HERSTELLEN EINES LEICHT-METALLRADES
    • 设备的组合和生产光金属轮的空白方法
    • EP2771137A1
    • 2014-09-03
    • EP12818482.7
    • 2012-10-24
    • Ronal AG
    • MUFFATTO, Giorgio
    • B21D53/30B21D22/14
    • B21B41/00B21D5/002B21D5/004B21D5/04B21D22/14B21D22/16B21D53/30
    • The invention relates to a device for producing a metal wheel (1) from a preform, with stretching rollers (3) which act on the rim region of the preform and by means of which a rim (1.1) is brought into its final form, which device is further characterized by freely rotatable rollers (4) that are arranged underneath the stretching rollers (3) and interact with them, for the forming of a rim flange (1.7). The invention further proposes for this purpose a method for producing a metal wheel (1) from a preform, wherein the preform of the metal wheel (1) to be produced is fitted onto a clamping mandrel (2) and set in rotation, stretching rollers (3) act on the preform and exert radial pressure on it in the upper region of a rotationally symmetrical shell thereof and move along the shell wall of the preform, while compressing and stretching the shell wall to form a rim (1.1), with a main movement component parallel to the axis of rotation (2.1) of the preform, wherein the method is characterized in that the preform is engaged from below by freely rotating rollers (4), which are arranged around the circumference of the preform at the same circumferential angles as the stretching rollers (3), and so the stretching rollers form a rim flange (1.7) by stretching preform material against the freely rotating rollers engaging from underneath.
    • 通过用于从预成形件制造金属轮(1)中,用拉伸辊(3)接合在所述预成型件的边缘区域的设备哪个辊轮辋(1.1)是最终形成其中,对于 形成轮辋凸缘(1.7)。 可自由旋转的轧辊基体(4)被布置在拉伸辊(3)的下方并与它们合作。 一种用于从预成形件制造金属轮(1)的方法,该金属轮(1)将被制造的预成型件放置在夹持心轴(2)并使其旋转时,拉伸辊(3) 接合在预成型带的径向压力的施加的旋转对称的护套的轴向外侧,并且沿着预成型带压缩的套壁移动和套壁的拉伸,以形成轮辋(1.1)与 主运动分量平行于所述预成形件的转动(2.1)的轴线。