Face cam 1 rotates about fixed axis A and has two profiled grooves a and b. Follower 4 reciprocates in fixed guides B-B along axis x-x and carries roller 6 which rolls and slides along groove a. Follower 2 reciprocates in fixed guides C-C along axis y-y and carries roller 5 which rolls and slides along groove b. Followers 2 and 4 have slots c and d. Tool 3, mounted at the intersection of slots c and d, traces the required figure, for example, letter K, as shown. The profiles of grooves a and b are constructed according to the corresponding projections of the required figure on axes x and y.
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