The utility model discloses an open and shut the hinge mechanism's VTM machine of wide-angle, the wide-angle open and shut the hinge mechanism and include two pivot components, a hinge pin axle, two pivot components are first pivot component, second pivot component respectively, in the through-hole that second pivot component seted up along self axis is then arranged in to the one end of hinge pin axle and first pivot component connection, the other end, in the through-hole inner wall of said second pivot component, one end is through the wall connection of self-lubricating cover and hinge pin axle, and the other end then is connected with the screw fastening tie member with screw thread fit connection's mode accordingly, the utility model discloses can be through clearance fine setting between the two pivot components that constitute the hinge mechanism, realize the mounting of connecting through the hinge mechanism and open and shut gomphosis between the piece, avoid opening and shutting and the mounting between the contact friction.