Die and method for reducing controlling the formation of flash on parts
    1.
    发明授权
    Die and method for reducing controlling the formation of flash on parts 失效
    用于减少控制部件上闪光形成的模具和方法

    公开(公告)号:US06370933B1

    公开(公告)日:2002-04-16

    申请号:US09511449

    申请日:2000-02-23

    IPC分类号: B21C2502

    CPC分类号: B21J5/02

    摘要: A die for reducing the formation of flash on parts includes a first die section and a second die section defining therein a cavity. The first die section includes a pair of first surfaces and the second die section includes a pair of second surfaces which together define a pair of parting lines which extend from opposite sides of the cavity. Desirably, the first die section includes a pair of lands, each extending along the length of one of the parting lines. Each land defines a first surface portion of the first surface and is sized and configured so that the land is elastically loaded, e.g., substantially equal to and less than the elastic limit of the material forming land when forming a part. In another embodiment, a die for reducing the formation of flash includes a land sized and configured so that when a first die section and a second die section are clamped together for forming the part, a second surface portion of the first surface of the first die section engages a second surface of the second die and the stress on the first surface portion is substantially equal to and less than an elastic limit of the land. In a third embodiment, a die includes a first die section and a second die section having a first surface and a second surface, respectively, which together define a parting line having at least one bend for controlling the formation of flash. Methods for forming such dies and methods for forming parts having reduced or controlled formation of flash are also disclosed.

    摘要翻译: 用于减少部件上闪光形成的模具包括第一模具部分和在其中限定空腔的第二模具部分。 第一模具部分包括一对第一表面,并且第二模具部分包括一对第二表面,这些第二表面共同限定了从空腔的相对侧延伸的一对分型线。 期望地,第一模具部分包括一对沿着分离线之一的长度延伸的平台。 每个平台限定第一表面的第一表面部分并且其尺寸和构造使得当形成部件时,焊盘被弹性地加载,例如基本上等于并且小于材料形成焊盘的弹性极限。 在另一个实施例中,用于减少闪光形成的模具包括尺寸和构造使得当第一模具部分和第二模具部分被夹紧在一起以形成部件时,第一模具的第一表面的第二表面部分 所述第二模具的第二表面接合,并且所述第一表面部分上的应力基本上等于并小于所述焊盘的弹性极限。 在第三实施例中,模具包括分别具有第一表面和第二表面的第一模具部分和第二模具部分,所述第一模具部分和第二模具部分共同限定具有用于控制闪光形成的至少一个弯曲部的分型线。 还公开了用于形成这种模具的方法和用于形成具有减少或控制的闪光形成的部件的方法。