公开(公告)号：US4589177A

公开(公告)日：1986-05-20

申请号：US735820

申请日：1985-05-17

Applicant: Nunzio Secolo ,  Elio Gualchi

Inventor： Nunzio Secolo ,  Elio Gualchi

IPC: B21D53/26 ,  B21K1/38

CPC classification number: B21D53/26 ,  Y10T29/49531

Abstract: A method of manufacturing a wheel rim for a motor vehicle, including cutting off a section of an extruded cylindrical tube to produce a hollow cylindrical rim blank, and subjecting the blank to two successive deformation steps. During the first step, only the central section of the blank is deformed radially inwardly, the diameter of the end sections remaining substantially unchanged. In the second step, only the edge portions of each end section are deformed radially outwardly, so that the region between each edge portion and the central section is unchanged in diameter. Also, the outermost part of each edge of the blank is bent into a U-shape. The rim is then gauged to finish it. The first deformation step is performed by a pair of cooperating rollers having central sections shaped to deform the central section of the blank. The end sections of the rollers are spaced apart to accommodate the end sections of the blank, the spaces being open at the sides of the rollers to permit free endwise flow of the rim blank outwardly from between the rollers.

Abstract translation: 一种制造用于机动车辆的轮辋的方法，包括切割挤压的圆柱形管的一部分以产生中空的圆柱形边缘坯料，以及对坯件进行两个连续的变形步骤。 在第一步骤中，只有坯料的中心部分径向向内变形，端部部分的直径基本上保持不变。 在第二步骤中，只有每个端部的边缘部分径向向外变形，使得每个边缘部分和中心部分之间的区域直径不变。 此外，坯料的每个边缘的最外部分弯曲成U形。 然后测量边缘以完成它。 第一变形步骤由具有中心部分的一对配合的辊执行成形，以使坯件的中心部分变形。 辊的端部间隔开以容纳坯件的端部，空间在辊的侧面是敞开的，以允许边缘坯料自由地从辊之间向外流动。