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Simple introduction for the Planar four mechanism of cam and groove coupling
Planar four mechanism of cam and groove coupling motion rotating mechanism can be through the fixed gear of the replicated dynamic instantaneous center line. Space four kinematic, cam and groove coupling can be copied instantaneous axis moving mechanism moves the surface in its fixed in a spiral motion - Combination simultaneous rotation and translation.
The spatial four bar mechanism of cam and groove coupling being able to accept motion screw rotation and translation of a virtual axis is called the instantaneous screw axis (ISA) [2,3]. A rotating shaft rotation has a strip of space called axode. As the cam and groove coupling motion can be fixed and mobile center link in the planar four bar mechanism, coupled motion spatial four bar mechanism can be copied from the fixed and mobile shaft rotation surface and / or translation mechanism moving axode in its fixed in a particular way, the movement of the connecting rod can be reproduced in a limited range.
from：http://www.bauercoupling.com/newsd-nid-60.html