公开(公告)号：US20040170401A1

公开(公告)日：2004-09-02

申请号：US10798175

申请日：2004-03-11

Applicant: NSK LTD.

Inventor： Akira Tsubouchi ,  Kiyoshi Okubo ,  Yasushi Watanabe

IPC: H04N005/781 ,  B21D022/00 ,  B21D022/21

CPC classification number: B21K1/767 ,  B21C37/155 ,  B21K1/063 ,  B62D3/126 ,  Y10S72/702 ,  Y10T29/49467 ,  Y10T29/49474 ,  Y10T29/49476 ,  Y10T74/1967 ,  Y10T74/19949

Abstract: A hollow rack shaft is manufactured through a first step, a second step and a third step. At the first step, the plate-like workpiece of substantial rectangular shape is press formed into a gutter-like shape. The first die set used at this step is provided with slant die surfaces for canceling elastic recovering generated at the workpiece when the workpiece is removed from the first die set. At the second step, a row of rack teeth is press-formed on the flat bottom portion of the workpiece formed in the first step. The die set used at the second step is provided with a recess for releasing surplus workpiece material within the die clearance at a stroke end of the pressworking. At the third step, each of a pair of legs of the workpiece is bent in a semi-circular shape so as to be butted to each other. At this time, a mandrel is inserted between the legs of the workpiece.

公开(公告)号：US20040083786A1

公开(公告)日：2004-05-06

申请号：US10288948

申请日：2002-11-06

Inventor： Mark D. Garnett ,  William A. Marttila ,  Zhicong Yao

IPC: B21D022/21

CPC classification number: B21D22/02 ,  B21D22/26

Abstract: An improved stamping die assembly is provided for controlling the flow of sheet metal during the draw forming process. The die assembly includes a textured die surface on the one or both sides of the binder mating surfaces that replaces conventional draw and lock beads. The textured die surface can be formed using direct metal deposition of a hard material, harder than the existing die surfaces, on the existing die base material to achieve an engineered textured surface. The textured die surface optimizes the performance of the die by enabling longer die life, higher coefficients of friction between the mating binder surfaces and reduction of wrinkles and stringers typically caused by draw and lock beads in the draw forming process.

公开(公告)号：US20030056563A1

公开(公告)日：2003-03-27

申请号：US10171266

申请日：2002-06-12

Inventor： James A. McClung

IPC: B21D022/21

CPC classification number: B21D51/38

Abstract: Method and apparatus for forming end shells for containers with a peripheral curl and an annular reinforcing rib in a single stroke cycle of a press which includes a punch core, a punch shell, and a pressure sleeve carried by an inner ram of the press. A cut edge is carried by an outer ram for forming a flat disc-shaped blank at a first level from a strip of sheet material. A die core is mounted on the base at a second level and is surrounded by concentric inner and outer die core rings. A cup-shaped blank is formed from the flat blank by movement of the punch core, pressure sleeve, and punch shell through a blank and draw die. The cup is clamped at the second level between the die core and punch core and formed into an end shell by movement of the punch core, pressure sleeve, and punch shell into clamping engagement with the die core, and inner and outer die core rings. Reverse movement of the outer die core ring and punch shell draws a peripheral edge of the end shell about a curl groove formed in the outer die core ring to form the peripheral curl. The end shell then is ejected form the press at the second level by pressurized air.

公开(公告)号：US20020095969A1

公开(公告)日：2002-07-25

申请号：US10010126

申请日：2001-12-06

Applicant: Kabushiki Kaisha Toyota Jidoshokki

Inventor： Tokuhiro Matsunaga

IPC: B21D022/21

CPC classification number: B21D22/02 ,  B21D37/12

Abstract: A press die comprises an upper die and a lower die each including a molding surface and a die main body; at least one first guide post attached to at least one of the die main bodies of the upper die and the lower die from its molding surface side; and at least one product pressing member mounted to the die main body to which the first guide post is attached so as to be slidable along the first guide post, at least one first guide hole into which the first guide post is to be inserted being formed in the product pressing member from its molding surface side. The die main body and the product pressing member mounted to the die main body undergo an alignment for each other through the first guide post.

Abstract translation: 压模包括上模和下模，每个模具包括模制表面和模具主体; 至少一个第一引导柱，从其成型表面侧附接到上模和下模的至少一个模具主体; 以及至少一个产品按压构件，其安装到所述模具主体上，所述第一引导件安装到所述模具主体上，以便沿着所述第一引导柱滑动;形成有要插入所述第一引导柱的至少一个第一引导孔 在成型面侧的产品按压部件。 安装在模具主体上的模具主体和产品按压部件经由第一导向柱进行相互对准。

公开(公告)号：US20020083755A1

公开(公告)日：2002-07-04

申请号：US09961489

申请日：2001-09-25

Inventor： Kunio Miyauchi ,  Takayuki Aoki ,  Ichiro Takahashi

IPC: B21D022/21

CPC classification number: B21D22/30 ,  B21C45/00

Abstract: In press forming including ironing, an elastically deformable material is used for a part of ironing die contacting to the work material under a higher pressure than designed, for taking the formed product out from the die easily in a case that the ironing die and the formed product are very close in size to each other, and thereby improving the efficiency of production.

Abstract translation: 在包括熨烫的压制成型中，可弹性变形的材料用于在比设计的更高的压力下与工件接触的一部分熨烫模具，用于在熨烫模具和形成的模具的情况下容易地将模制产品从模具中取出 产品的尺寸非常接近，从而提高了生产效率。

公开(公告)号：US20020083754A1

公开(公告)日：2002-07-04

申请号：US09961166

申请日：2001-09-24

Inventor： Kunio Miyauchi ,  Takayuki Aoki ,  Ichiro Takahashi

IPC: B21D022/21

CPC classification number: B21D22/30 ,  B21D51/26 ,  Y10S72/71

Abstract: For providing a simultaneous both-sided ironing-deep drawing process, producing vessels like metallic cans which strong enough in their use and, after having been used, can easily be squashed by hand or foot, the height difference between the inner die and outer die and the profile radii of the inner die and outer die have been changed to changed the longitudinal wall strength of tubular structures in the simultaneous both-sided ironing-deep drawing process, holding a work material between the inner die and outer die, and simultaneously ironing both-sides of the work wall, and thereby obtaining tubular structures.

Abstract translation: 为了提供同时双面熨烫 - 深拉伸工艺，生产容器如在使用中足够强的金属罐，并且在使用之后可以容易地用手或脚挤压，内模和外模之间的高度差 并且改变了内模和外模的轮廓半径以改变同时双面熨烫深拉伸过程中的管状结构的纵向壁强度，在内模和外模之间保持加工材料，同时熨烫 工作壁的两侧，从而获得管状结构。

公开(公告)号：US20020023474A1

公开(公告)日：2002-02-28

申请号：US09894955

申请日：2001-06-28

Inventor： James A. McClung

IPC: B21D022/21

CPC classification number: B21D51/38 ,  B21D22/24 ,  B21D51/26

Abstract: A method and apparatus for forming a container component has a fixed stock plate and cut edge mounted on a base at a first level for forming a disk-shaped blank from a strip of sheet material. A blank and draw die is mounted at a second level which forms the disk-shaped blank into a shallow cup upon advancement of a punch assembly through the die. A profile pad is mounted at a third level on the base and imparts a profile on the bottom wall of the shallow cup as the punch assembly continues a downward stroke. An air stream ejects the profiled container component from the press at the third level.

Abstract translation: 用于形成容器部件的方法和装置具有固定的板材和切割边缘，该固定板材和切割边缘安装在第一层的基座上，用于从片材条形成盘形坯料。 一个空白和拉伸模具安装在第二层上，当冲头组件通过冲模推进时，该模具将盘状坯料形成浅杯状。 轮廓垫安装在基座上的第三层上，并且当冲头组件继续向下冲程时，将轮廓放置在浅杯的底壁上。 空气流在第三级从压机中排出成型容器部件。