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    • 4. 发明授权
    • Apparatus for making a tri-metallic composite electrical contact
    • 用于制造三金属复合电接触的装置
    • US4232812A
    • 1980-11-11
    • US926874
    • 1978-07-24
    • Akira Shibata
    • Akira Shibata
    • B21K1/62H01H11/04B23K20/02
    • H01H11/041Y10T29/49204Y10T29/49208Y10T29/49218
    • A tri-metallic electrical contact consisting of a head wire piece and a base wire piece which abut to an intermediate piece at its opposite ends, is produced by cold press operations performed by first and second die and punch sets. The first die and punch set causes plastic deformation of approximately only a half part of the aligned wire pieces, while keeping another half part of these pieces not deformed. The second die and punch set imparts, subsequent to, and independently from, the cold press operation performed by the first die and punch set, plastic deformation to the other half part of the pieces, whereby the abutting surfaces of the three wires are prevented from sliding movements laterally relative to each other during the cold press operations, and whereby irregular or insufficient deformation of the wires due to the differences of yield points of the wires is prevented.
    • 通过由第一和第二模具和冲头组执行的冷压操作来制造由头部线片和与其相对端部的中间件抵接的基部线材构成的三金属电接触。 第一模具和冲头组件引起大约仅对准的线材件的一半的塑性变形,同时保持这些部件的另一半部分不变形。 第二模具和冲头装置在第一模具和冲头组件执行的冷压操作之后并独立于第二模具和冲头组件,塑料变形到另一半部件,由此防止三根导线的邻接表面 在冷压操作期间相对于彼此横向滑动运动,并且由于电线的屈服点的差异而防止了电线的不规则或不足的变形。
    • 6. 发明授权
    • Machine for producing resistance welded trimetallic contacts
    • 生产电阻焊接三角接头的机器
    • US3612812A
    • 1971-10-12
    • US3612812D
    • 1970-07-27
    • KETTENFABRIK RENZ WACKER & CO
    • WACKER HANSWOLFINGER ERWIN
    • B23K11/02B21K1/62B23K11/00B21J5/08
    • B21K1/62B23K11/0013Y10T29/49211
    • A machine for making trimetal contacts having a body of relatively low cost metal, such as copper, and contact surfaces of an expensive metal such as silver, the machine including a plate rotatable in a vertical plane carrying a plurality of matrices spaced equally about its circumference, and means to position each matrix successively to a plurality of work stations, a first work station to receive the end of a copper wire to a predetermined depth in the matrix at that work station, the matrix cooperating with a first stationary guide-forming countershear means through which the copper wire is fed, to shear the end of the copper wire to form the body of a workpiece, and to carry the severed piece to a second work station when the rotatable plate is indexed to the next station where the end of the short workpiece body is contacted by the end of a silver wire in a first welding chamber where an electric welding current is passed through the contacting surfaces to weld the silver wire to the copper workpiece. The silver wire is then advanced until the weld, and a predetermined length of silver wire enters the matrix which cooperates with a second stationary guide-forming countershear means to shear the silver wire adjacent the weld as the matrix is moved to carry the workpiece to the next successive work station where the second end of the copper body of the now bimetal workpiece is contacted by a second silver wire in a welding chamber positioned on the other side of the rotatable plate from said first welding chamber and the silver wire is welded to the copper of the workpiece, the second silver wire is then advanced into the matrix a predetermined distance and the matrix, in cooperation with a third fixed guide, shears the second silver wire as the plate carries the workpiece forward to a final station where the now trimetal workpiece is simultaneously shaped by upsetting, and ejected from the matrix.
    • 8. 发明授权
    • Method of forming a metal part having an annular flange
    • 形成具有环形凸缘的金属部件的方法
    • US4607514A
    • 1986-08-26
    • US607856
    • 1984-05-07
    • Russell A. Nippert
    • Russell A. Nippert
    • B21J5/08B21J5/02B21K1/62B21K23/04H01L21/48B21D22/00
    • B21K23/04B21J5/02H01L21/48
    • A pill-shaped billet which is tapered in thickness toward an outer, relatively thin rim, extending circumferentially therearound, is cold formed into a metal part having an annular flange. Upper and lower die elements define cavities, and shoulders extending circumferentially therearound, and are positioned in a sleeve with the shoulders being directly opposed, thereby defining an annular space. The billet is placed between the upper and lower die elements in the sleeve with the rim of the billet in the annular space. The upper and lower die elements contact the billet only along the edges between their respective shoulders and cavities. When the upper and lower die elements are moved toward each other, the annular flange is formed by extruding radially outward the part of the billet between the shoulders, while simultaneously cold forming the billet into the first and second cavities.
    • 朝向朝向周向周向延伸的外部相对薄的边缘的厚度呈锥形的丸状坯料被冷成型为具有环形凸缘的金属部件。 上和下模具元件限定空腔和肩部沿其周向延伸,并且定位在套筒中,肩部直接相对,从而限定环形空间。 坯料被放置在套筒中的上模和下模元件之间,其中坯料的边缘在环形空间中。 上下模具元件仅沿着它们各自的肩部和空腔之间的边缘接触坯料。 当上下模具元件彼此相对移动时,环形凸缘通过径向向外挤压坯料之间的坯料而形成,同时将坯料冷成型为第一和第二空腔。