Four Bar Mechanism
Introduction
The aim of this exercise was to assemble the given 3 bars and 2 bearings into a 4 bar linkage. The mates created in Solidworks were also modified to make sure that the assembly had exactly one degree of freedom.
Process
The given parts were imported into Solidworks assembly. The bearings were fixed in place by mating faces of the bearing with the planes in Solidworks. Then, two bars were linked to the bearings to create hinges and then the third bar was used to join the other end of the two bars together. All the components were assigned plain carbon steel as the material.Â
A motor was added at one of the hinges and a motion analysis was done. Gravity was included into the motion study to get plots of torque. Trace points of certain points on the top (third) bar were also traced and plots of velocity and vertical force on bearing were plotted.
Results
The angle with the lowest requirement of torque during motion at 600 RPM was about 26 degrees.
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The meaning of negative torque is that the motion is providing resistance to motion.
