Design,modeling and simulation of six degree of freedom machining bed

Machining is a process in which a raw material is cut into desired shape and size after various material removal processes. as application becomes more complex and size shrinks,machines need to be designed to meet the desired precision and accuracy. to date researchers and practitioners generate 6 degree of freedom for the tool which affects the accuracy and precision of machining. in this paper it is proposed to produce the desired degrees of freedom from the bed replacing a machine bed with a parallel manipulator having six legs of variable lengths. this will give work piece a 6 dof motion. the paper presents design for the proposed machine bed,kinematic model for the machine bed and dynamics model of the linear actuator. the linear actuator is used to change the lengths of legs. each leg will consist of a linear actuator. the physical model of the proposed bed is generated in solid works,software used to model the engineering systems. six degree of freedom motion for the proposed machining bed is simulated in the solid works. results which verify that the proposed design is capable to produce motion in six directions in space are presented. results in tabular form are presented which verify kinematic modelling of the platform while the dynamics model of linear actuator is verified through matlab® simulations. all simulation results support the hypothesis that 6 dof may be produced by a machining bed. © pakistan academy of sciences.