公开(公告)号：US5176021A

公开(公告)日：1993-01-05

申请号：US867286

申请日：1992-04-09

Applicant: Niels D. Jensen ,  Soren Simonsen

Inventor： Niels D. Jensen ,  Soren Simonsen

IPC: B21D22/22 ,  B21D51/12

CPC classification number: B21D51/12 ,  B21D22/22 ,  Y10T279/11

Abstract: In the method proposed a peripheral wall with at least one axial section of high shaping and fitting accuracy is made by forming an initial blank. This accuracy is achieved, in that before the peripheral wall is formed, sheet material which has been put into a plastic state is swaged in places round the periphery, then the swaged locations are sized, and/or in that during or after the formation of the peripheral wall, the wall is shaped by stamping in a plurality of places along its periphery, whereby the said zone providing shaping and fitting accuracy is formed from fitting areas at at least one side of the peripheral wall in the region of the swaged and/or stamped locations. An apparatus for carrying out such a method is generally in the form of a drawing machine, wherein the holder and/or the bottom die contain radial apertures, which open into the inner edge of the holder and/or into the shaping cavity of the die, and which are arranged at intervals round the periphery. The wall surfaces of the upper die and/or of the shaping cavity act as sizing surfaces to form fitting areas in swaged locations on the peripheral wall of the shaped part, the swaged locations being formed by said apertures.

Abstract translation: 在所提出的方法中，通过形成初始坯料来形成具有高成形和配合精度的至少一个轴向截面的周壁。 实现这一精度，因为在形成周壁之前，已经进入塑料状态的片材在围绕周边的地方锻造，然后模锻位置的尺寸和/或在形成之后或之后 周壁，壁通过沿着其周边的多个位置进行冲压而成形，由此所述提供成形和配合精度的区域由在外周壁的至少一侧的配合区域形成， 或印章位置。 用于执行这种方法的装置通常是拉丝机的形式，其中保持器和/或底模包含径向孔，该径向开口进入保持器的内边缘和/或进入模具的成形腔 ，并且围绕周边间隔排列。 上模和/或成形腔的壁表面用作定径表面，以在成形零件的周壁上的模锻位置形成配合区域，所述模锻位置由所述孔形成。

公开(公告)号：US4842480A

公开(公告)日：1989-06-27

申请号：US89211

申请日：1987-08-25

Applicant: Niels D. Jensen ,  Soren Simonsen

Inventor： Niels D. Jensen ,  Soren Simonsen

IPC: F04D29/08 ,  F04D13/06 ,  F04D29/42

CPC classification number: F04D29/426 ,  F04D29/4266

Abstract: A multistage in-line rotary pump which comprises a closed pump body, a base element provided with suction and delivery connectors, and a head element. The pump body is surrounded by a cylindrical jacket or casing spaced from the pump body to form an annular return space, which casing is clamped between the base and head elements by means of stay bolts. Flat joints are provided between the base and head elements and the respective axial ends of the casing. To prevent high areal compression stresses in the area of the flat joints, the two extremities of the casing are plastically deformed to obtain a wall thickness which is greater than the wall thickness of the rest of the casing tube.

Abstract translation: 一种多级在线旋转泵，其包括封闭的泵体，设置有抽吸和输送连接器的基座元件以及头部元件。 泵体由与泵体间隔开的圆柱形夹套或壳体包围以形成环形返回空间，该壳体通过拉杆螺栓夹在基部和头部元件之间。 扁平接头设置在基座和头部元件之间以及壳体的相应的轴向端部。 为了防止扁平接头区域中的高面压缩应力，壳体的两端被塑性变形以获得大于套管的其余部分壁厚的壁厚。