Means for forming at least one groove with kurvenfoermiger axis and circular cross-section

摘要

To form at least one curved groove has a circular section in a roughing 1, a device 7 is articulated quadrilateral 27 in which the side 22 of the quadrilateral opposed to the support 8 of the roughing is provided with a door - ball 23 associated with a pusher 31. / p & & p & application to the embodiment of the rolling tracks of the transmission joints of the tripod type.