Link 1 turns about axis x-x and is connected by turning pair A to link 4 and by screw pair B to link 5. Links 6 and 7 are connected by turning pairs C, D, E and F to link 4 and to links 2 and 3. Links 3 and 2 are connected by turning pairs K and M with link 5 and have swivel jaws 8 and 9 which are pivoted at points N and L. Workpiece a is clamped by jaws 8 and 9 when link 1 is turned (screwed in).
$217$SL,GC$