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    • 4. 发明授权
    • Method of producing thrust washers
    • 生产止推垫圈的方法
    • US4151733A
    • 1979-05-01
    • US793349
    • 1977-05-03
    • Yoshio Iijima
    • Yoshio Iijima
    • B21D53/16B21D7/08B21D11/20B21D53/20
    • B21D7/08
    • A method of producing thrust washers in which a blank material in the form of a flat bar is forced to pass between an upper and a lower forming rolls arranged as a pair. The blank material is pressed onto one of the forming rolls to be bent in the breadthwise direction to become a thrust washer. The upper and the lower rolls cooperate with each other in defining therebetween a groove having a configuration corresponding to the cross section of the article to be obtained, through which the blank is made to pass. This method ensures an economical production of ring-shaped or arcuately shaped articles having accurate dimensions.
    • 一种制造推力垫圈的方法,其中扁平形式的坯料被迫在布置成一对的上下成形辊之间通过。 将坯料按压到其中一个成形辊上以在宽度方向上弯曲成为止推垫圈。 上辊和下辊彼此配合,在其间限定具有与要获得的制品的横截面相对应的构造的凹槽,坯料通过该凹槽。 该方法确保经济地生产具有精确尺寸的环形或弧形成形制品。
    • 5. 发明授权
    • Method of producing semicircular washers having a projection to prevent
rotation
    • 制造具有防止旋转的突起的半圆形垫圈的方法
    • US4310939A
    • 1982-01-19
    • US82184
    • 1979-10-05
    • Yoshio Iijima
    • Yoshio Iijima
    • F16B43/00B21D28/00B21D53/22B21D53/20
    • B21D53/22
    • In producing a semicircular washer having a projection to prevent rotation formed thereon, a blank material in the form of a flat bar is forced to pass a roll caliber between upper and lower forming rolls arranged in a pair and bent on and along one of the forming rolls while being pressed in the breadthwise direction to become a semicircular washer. The semicircular washer then has its outer marginal portion punched out by means of a punch and a die to form thereon a projection for preventing rotation. The method ensures an increase in the yield of semicircular washers having a projection for preventing rotation and enables the projection to be formed in any position on the washer as desired.
    • 在制造具有防止其上形成的旋转的突起的半圆形垫圈时,扁平条形式的坯料被迫通过上下成形辊之间的辊口径,并成对地沿着成形 在沿宽度方向按压的同时卷成半圆形洗衣机。 然后半圆形垫圈的外边缘部分通过冲头和模具冲压出来,以形成用于防止旋转的突起。 该方法确保了具有用于防止旋转的突起的半圆形垫圈的产量的增加,并且使得能够根据需要将突起形成在垫圈上的任何位置。
    • 9. 发明授权
    • Method and apparatus for producing flanged bush
    • 制造法兰衬套的方法和装置
    • US4796457A
    • 1989-01-10
    • US63716
    • 1987-06-15
    • Yoshio Iijima
    • Yoshio Iijima
    • B21D19/08B21K21/12B21K23/04F16C17/10F16C33/14B21D22/00
    • F16C33/14B21D19/08B21K21/12B21K23/04F16C17/10
    • A method of producing a flanged bush comprising the steps of: preparing a die having a through bore of a configuration conforming with the outer configuration of the flanged bush to be produced, and a flange-forming punch having a large-diameter portion of a diameter equal to the outside diameter of the flanged bush and a small-diameter portion of a diameter equal to the inside diameter of the bore in the flanged bush to be produced; inserting, by a coining punch, a cylindrical stock axially into the bore in the die from one axial end of the latter; and driving the flange-forming punch into the bore in the die from the other axial end of the latter so as to press the inner end of the stock, thereby to form the flange.
    • 一种制造法兰衬套的方法,包括以下步骤:制备具有与要生产的带凸缘衬套的外部构造相符的构造的通孔的模具和具有直径大的直径的法兰形成冲头 等于带凸缘衬套的外径和直径等于要生产的带凸缘衬套中的孔的内径的小直径部分; 通过压印冲头将圆柱形坯料从模具的孔中的一个轴向端部轴向插入模具中的孔中; 并且将凸缘成形冲头从模具的另一个轴向端部驱动到模具中的孔中,以压紧坯料的内端,从而形成凸缘。