| 摘要 |
934,056. Making universal joints. METALASTIK Ltd. April 13, 1961 [June 2, 1960], No. 19577/60. Class 83 (2). [Also in Groups XXIV and XXXII] In a method of manufacturing a ball point an inner ball-like part 13 is located in the required position within a sleeve 15, 16 which constitutes a housing but is larger than finally required, unvulcanised rubber 14 is forced into, to fill, the space between the sleeve part and the ball-like part and then cured so that it becomes bonded to the sleeve 15, 16 and the ball-like part 13 the sleeve 15, 16 being finally reduced in size, e.g. by swaging, to compress the rubber 14. As shown, a universal coupling comprises an annular disc 10 having two pairs of uniformly spaced ball joints on a common pitch circle each joint including a hollow rod 12 having a part-spherical protruberance 13. The disc 10 is formed of two annular metal discs secured together by swaging, bolting, riveting, or welding, the cup-like portions 15, 16 being formed as oversize pressings as shown in chain dotted lines. The swaging operation displaces inwardly only the non-spherical parts of the cups 15, 16. Alternatively the cup-like parts may be partspherical throughout but oversize in which case they are uniformly reduced in size. Only one of the cup-like portions of each pair may be oversize. In a modification the annular disc 10 is a one-piece die-casting, or forging, having integral sleeve parts which may be cylindrical, or shaped like a pair of cup-like portions in their initial form, and which extend at right angles from each side of the disc. After the moulding operation the sleeve parts are swaged to form spherical housings for the ball joints. Alternatively the complementary cup-like portions may be initially of cylindrical form. Where a sleeve part is in one piece one end may be cylindrical and the other cup-like which may be in its final form. The method described may also be used to manufacture tangential coupling links for universal couplings. Specification 931,860 is referred to. |
