Our factory processing outer spherical surface (face 1) uses connecting rod turning tooling. The tooling structure (Fig. 2) is composed of a reference plate 1, cylindrical pins 2 and 6, a cutter 4, a connecting rod 5, and the like. The working principle is shown in Figure 3. Let OA be the center line of the connecting rod, DB be the center line of the main shaft, and point D is the cutting edge. Point D is limited by the link OA for circular path motion. ∵DD_1=BB_1 ie R=R_1 if SRI000
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