| 摘要 |
An universal joint has two auxiliary balls and two blocks, and in the head two diametrically opposite grooves are made in the form of a half-tore outlined from the joint centre. In the holder auxiliary opposite grooves for positioning the blocks are made, on the internal surface of each of which a spherical hole is made for positioning in it of auxiliary ball. The grooves of the head in the form of a half-tore are located in the plane perpendicular to the plane of arrangement of its spherical holes, and auxiliary grooves for positioning the blocks of holder are made in the plane perpendicular to the plane of the arrangement of grooves for inserts.
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