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1. 发明申请

US20050252263A1 Methods of and apparatus for forming hollow metal articles 有权
标题翻译：中空金属制品成型方法及装置
公开(公告)号：US20050252263A1
公开(公告)日：2005-11-17
申请号：US11125565
申请日：2005-05-09
申请人： Stuart MacEwen , Peter Hamstra , Robert Mallory , Yihai Shi , James Moulton
发明人： Stuart MacEwen , Peter Hamstra , Robert Mallory , Yihai Shi , James Moulton
IPC分类号： B21D22/00 , B21D26/047 , B21D26/049 , B21D51/24
CPC分类号： B21D26/047 , B21D26/033 , B21D26/041 , B21D26/049 , B21D51/26
摘要： In hydroforming of hollow metal articles in a die, such as pressure-ram-forming procedures, a method of decreasing cycle time of the forming process, while ensuring acceptable product properties and avoiding failures, by modeling the process using finite element analysis to establish a pressure-time history that optimizes the forming operation and applies failure limits to selected variables such as minimum wall thickness or maximum strain rate, and transferring this pressure-time history to a computer controlling the forming process. Thermocouple and/or continuity sensors are incorporated into the die wall and connected to the computer so as to provide active feedback from the die to the control of the process.
摘要翻译：在模具中的中空金属制品的液压成型中，例如压力冲击成形步骤，通过使用有限元分析建模方法，通过对该方法进行建模，同时确保成型过程的循环时间，同时确保可接受的产品性质和避免故障，压力时间历史，优化成形操作，并将故障限制应用于选定的变量，如最小壁厚或最大应变速率，并将该压力时间历史传送到控制成型过程的计算机。热电偶和/或连续传感器被并入模具壁并连接到计算机，以便提供来自模具的主动反馈到过程的控制。

2. 发明授权

US06802196B2 Methods of and apparatus for pressure-ram-forming metal containers and the like 有权
标题翻译：压力冲击成形金属容器等的方法和装置
公开(公告)号：US06802196B2
公开(公告)日：2004-10-12
申请号：US10284912
申请日：2002-10-31
申请人： Kevin Gong , Peter Hamstra , Stuart MacEwen , Robert Mallory , James D. Moulton
发明人： Kevin Gong , Peter Hamstra , Stuart MacEwen , Robert Mallory , James D. Moulton
IPC分类号： B21D2602
CPC分类号： B21D26/049 , B21D22/16 , B21D26/033 , B21D26/041 , B21D26/047 , B21D51/16 , Y10T29/49805
摘要： A method of forming a bottle-shaped or other contoured metal container by subjecting a hollow metal preform having a closed end to internal fluid pressure to cause the preform to expand against the wall of a die cavity defining the desired shape, and advancing a punch by means of a backing ram into the die cavity to displace and deform the closed end of the preform either before or after expansion begins but before it is complete. The pressure-subjecting step is performed by simultaneously subjecting the preform in the die cavity to independently controllable internal and external positive fluid pressures and varying the difference between them to control strain rate. Apparatus for performing the method includes a split die with plural split inserts disposed in tandem to define the die cavity wall and heaters respectively inserted within the preform and arranged to heat the backing ram.
摘要翻译：通过对具有封闭端的中空金属预制件进行内部流体压力来形成瓶形或其它成形金属容器的方法，以使预成型件相对于限定所需形状的模腔的壁膨胀，并且将冲头推进在模腔中的支撑柱塞的装置，用于在膨胀开始之前或之后但在其完成之前使预成型件的封闭端部移位和变形。通过对模腔中的预成型体同时进行压力处理步骤，以独立地控制内部和外部正的流体压力，并且改变它们之间的差异以控制应变速率。用于执行该方法的装置包括具有多个分离插入件的分开模具，所述多个分离插入件串联布置以限定模腔壁和分别插入在预成型件内并且布置成加热背衬柱塞的加热器。

3. 发明授权

US07107804B2 Methods of and apparatus for pressure-ram-forming metal containers and the like 有权
公开(公告)号：US07107804B2
公开(公告)日：2006-09-19
申请号：US10788636
申请日：2004-02-26
申请人： Kevin Gong , Peter Hamstra , Stuart MacEwen , Robert Mallory , James D. Moulton
发明人： Kevin Gong , Peter Hamstra , Stuart MacEwen , Robert Mallory , James D. Moulton
IPC分类号： B21D26/02
CPC分类号： B21D26/049 , B21D22/16 , B21D26/033 , B21D26/041 , B21D26/047 , B21D51/16 , Y10T29/49805
摘要： A method of forming a bottle-shaped or other contoured metal container by subjecting a hollow metal preform having a closed end to internal fluid pressure to cause the preform to expand against the wall of a die cavity defining the desired shape, and advancing a punch by means of a backing ram into the die cavity to displace and deform the closed end of the preform either before or after expansion begins but before it is complete. The pressure-subjecting step is performed by simultaneously subjecting the preform in the die cavity to independently controllable internal and external positive fluid pressures and varying the difference between them to control strain rate. Apparatus for performing the method includes a split die with plural split inserts disposed in tandem to define the die cavity wall and heaters respectively inserted within the preform and arranged to heat the backing ram.

4. 发明授权

US06442988B1 Methods of spin forming initially cylindrical containers and the like 失效
标题翻译：旋转成型初始圆柱形容器等的方法
公开(公告)号：US06442988B1
公开(公告)日：2002-09-03
申请号：US09846169
申请日：2001-05-01
申请人： Peter Hamstra , Stuart MacEwen
发明人： Peter Hamstra , Stuart MacEwen
IPC分类号： B21B1908
CPC分类号： B21D22/16
摘要： A method of spin forming an open-ended container or other cylindrical metal workpiece by inserting a conically tapering mandrel coaxially therein and pressing the side wall of the workpiece against the inserted mandrel with plural symmetrically arranged forming discs while unidirectionally translating the workpiece, and independently translating the mandrel, relative to the forming discs.
摘要翻译：一种旋转形成开口容器或其它圆柱形金属工件的方法，通过将锥形锥形芯轴同轴地插入其中并将工件的侧壁压靠在具有多个对称布置的成形盘的插入心轴上，同时单向平移工件，并且独立地平移心轴相对于成形盘。

5. 发明授权

US06640149B1 System and method of developing a can bottom profile and a can with a domed bottom structure 失效
标题翻译：开发罐底型材的系统和方法以及具有圆顶底部结构的罐体
公开(公告)号：US06640149B1
公开(公告)日：2003-10-28
申请号：US09532167
申请日：2000-03-21
申请人： Dubravko Nardini , Yi Gao , Stuart MacEwen
发明人： Dubravko Nardini , Yi Gao , Stuart MacEwen
IPC分类号： G06F1750
CPC分类号： B21D51/26 , G06F17/50
摘要： A method of developing a can (e.g. beverage) bottom profile is presented. More specifically, finite element analysis on a parametric representation of a beverage can is used for developing an improved beverage can design. By specifying performance parameters that the beverage can must meet and providing specific geometric limitations on the design an improved beverage can design is obtained. The resulting improved beverage can design is independent of the gauge of the material used in construction thereof. The improved beverage can provides a concave dome on the bottom of the can connected to a bottom stand which in turn is connected to a cylindrical side wall of the can via a slanted connecting wall.
摘要翻译：提出了一种开发罐（例如饮料）底部轮廓的方法。更具体地说，使用饮料罐参数表示的有限元分析来开发改进的饮料罐设计。通过指定饮料必须满足的性能参数并在设计上提供具体的几何限制，可以获得改进的饮料罐设计。所得到的改进的饮料罐设计与其在构造中使用的材料的规格无关。改进的饮料可以在连接到底架上的罐的底部上提供凹入的圆顶，底座又通过倾斜的连接壁连接到罐的圆柱形侧壁。

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