公开(公告)号：US3914970A

公开(公告)日：1975-10-28

申请号：US50503574

申请日：1974-09-11

Applicant: FERRO MFG CORP

Inventor： PICKLES JOSEPH ,  JENKINS NEIL J

IPC: B21D5/08

CPC classification number: B21D5/08

Abstract: Flat strip stock is formed in a progressive rolling setup by a series of sets of dies to a channel form in which the sides of the channels are of arcuate inwardly concave configuration terminating in parallel inwardly spaced flat flanges. The stock is completely shaped by a series of dies to the required configuration but of slightly undersize internal dimensions. The stock is then drawn over a mandrel shaped and dimensioned to produce a slight expansion of the channel form to produce inside dimensions suitable for cooperation with a supporting track on which the channel form is slidable.

Abstract translation: 扁平条坯料通过一系列模具形成为渐进式轧制设备，其形式为通道形式，其中通道的侧面为弧形向内凹形配置，终止于平行向内间隔的平坦凸缘。 该坯料通过一系列模具完全成形为所需的结构，但尺寸略小的内部尺寸。 然后将坯料拉成一个形状和尺寸的心轴，以产生通道形式的轻微膨胀，以产生适于与通道形式可滑动的支撑轨道配合的内部尺寸。