Eccentric 6 rotates about fixed axis A and is connected by a turning pair to connecting rod 10 which, in turn, is connected by turning pair B to rocker arm 2. Rocker arm 2 turns about fixed axis C. Gear 1 is rigidly attached to eccentric 6 and transmits rotation through a train of gears 7, 8 and 9 (the last two being rigidly attached together) to gear 4 which rotates about axis D of rocker arm 2. Blank 3 which is to be machined to a complex contour is rigidly clamped on gear 4 and participates with it in its complex motion about axes C and D. The blank is machined with a single-point tool 5 (or a milling cutter may be employed) clamped to the base. The contour obtained depends upon the dimensions of the links and the transmission ratios of the gearing. The contour shown is given as an example.
$2575$LrG,FD$