Tuesday, December 2, 2008

Offset Planar Hinge


Offset planar hinge mechanism is a Watt I type mechanism with two straight brackets, two bent brackets, and two leaves. This mechanism allows the two leaves to rotate with respect to one another about a fixed centre of rotation in the plane. Credit goes to Hamlin and Sanderson, whom first introduced this unique mechanism (later patented in US, patent no: 5,657,584).

A Professor in Japan, Prof Yamamoto from Tokai University later used this mechanism in his research related to Micro-Manipulation System. It is proven from the designed prototype that this mechanism can contribute well in this micro-manipulation related problems.

Professor Yamomoto's invention

I'm now trying to also implement this special mechanism in my research. Aiming for micro-surgical application, this offset planar hinge will be designed and implemented on a prototype that is intended to contribute in that kind of surgery.
Combining this mechanism with suitable motor unit to control the motion of the hinge as well as the combined movement, will result in a precise and accurate movement of the hinge.