A medical device has been disclosed. The medical device includes a parallel manipulator. The parallel manipulator having an end platform coupled to a surgical tool and a base platform coupled to machine module. The machine module is coupled to the surgical tool through a transmission shaft disposed between the end platform and the base platform.

The disclosure relates to a machine comprising; a fixed lower platform having a first connecting area; a movable upper platform having an operating area and a second connecting area; at least three limbs, each limb comprising a lower section, an upper section and an intermediate section between said lower section and said upper section; wherein each limb interconnects said fixed lower platform and said movable upper platform by joining said first connecting area and said second connecting area, wherein said lower section of each limb comprises a first part of a first prismatic joint, wherein, the first connecting area comprises a cooperating second part of said first prismatic joint; wherein said lower section of each limb further comprises a first revolute joint; wherein said intermediate section of each limb comprises a second prismatic joint, wherein said upper section of each limb comprises a second revolute joint; wherein each limb is pivotably movable relative to said movable upper platform; wherein each of said limbs comprise an actuation arrangement for moving the movable upper platform relative to the fixed lower platform.

A semi-automatic precision positioning robot apparatus and method for use of the same to hold, position, orient and/or move a workpiece are provided. The positioning apparatus utilizes an actuator system of a given configuration to manipulate a workpiece holding unit with multiple degrees of freedom to achieve various positions and orientations. An associated tool may further be provided to interact with the workpiece in various positions and orientations. The positioning apparatus enables an operator to obtain high degrees of maneuverability while maintaining precision and consistency in the manufacture and production of various products and components.

A medical device is provided. The medical device includes a parallel manipulator. The parallel manipulator has an end platform coupled to a surgical tool and a base platform coupled to a machine module. The machine module is coupled to the surgical tool through a transmission shaft disposed between the end platform and the base platform. The transmission shaft has a transmission yoke, a runner, a first rod coupled to the transmission yoke, a second rod coupled to the runner, and a universal joint coupled between the first rod and the second rod.

The present invention provides a four-chain six-degree-of-freedom hybrid mechanism. The four-chain six-degree-of-freedom hybrid mechanism comprises a fixed platform, a sliding rail mounted on the fixed platform, two sliding blocks, a mobile platform and four linear actuator chains connecting the mobile platform with a first sliding block and a second sliding block. The mobile platform is square-shaped. In the four linear actuator chains, the first linear actuator chain and the third linear actuator chain have the same structure while the second linear actuator chain and the fourth linear actuator chain have the same structure. The mobile platform can achieve six degrees of freedom. The four linear actuator chains coordinate to drive so as to achieve two translational degrees of freedom and two rotational degrees of freedom; the first sliding block and the second sliding block coordinate to drive so as to achieve the other translational and rotational degrees of freedom.

A driving mechanism including a first rod (103a), a second rod (104a), a first planar motor (106) moving on a plane, a center planar motor (105) moving on the plane and a moving portion (101), in which one end of the first rod is rotatably connected to the moving portion by a first rotation fulcrum (125a), the other end of the first rod is rotatably connected to the first planar motor by a second rotation fulcrum (126a), one end of the second rod is rotatably connected by a third rotation fulcrum (128a) provided on the first rod. The other end of the second rod is rotatably connected to the center planar motor by a fourth rotation fulcrum (127a), and the moving portion is moved so as to recede from the center planar motor when the first planar motor is moved near to the center planar motor.

A medical device has been disclosed. The medical device includes a parallel manipulator. The parallel manipulator having an end platform coupled to a surgical tool and a base platform coupled to machine module. The machine module is coupled to the surgical tool through a transmission shaft disposed between the end platform and the base platform.

A carriage with two hexapod platforms, each having a base, a plate, and a set of six cylinders associated in pairs. Each cylinder is articulatedly mounted with the plate. For each pair, a slider is able to move in translation on the base. For a first pair, the two cylinders of the first pair are mounted in an articulated manner on the slider. The articulation of one of the two cylinders of the first pair with the plate is adjacent to the articulation of one of the two cylinders of a second pair with the plate. The articulation of the other of the two cylinders of the first pair with the plate is adjacent to the articulation of one of the two cylinders of a third pair with the plate. For each slider, a movement system moves the slider. A control unit controls each cylinder and the movement system.

A medical device is provided. The medical device includes an adaptor, a parallel manipulator, a shaft motor, a transmission shaft and a force transducer. The force transducer is disposed between the adaptor and an end platform of the parallel manipulator, and the force transducer has a through hole. The receiving shaft of the adaptor meets the transmission shaft in the through hole to receive the mechanical force from the transmission shaft to manipulate movement of the surgical tool.

Disclosed is a two-layer three-rail planar robot with a parallelogram, including a fixed platform, a moving platform, and three branched chains. Three planar curved rails I are provided on the fixed platform. Three planar curved rails II are fixedly connected to the moving platform. Each planar curved rail I is connected to a planar curved rail II corresponding to the planar curved rail I by one of the branched chains. Each of the branched chains includes a slider I, two connecting rods provided in parallel, a slider II. The slider I is slidably connected to the planar curved rail I. The slider I is rotatably connected to one end of each connecting rod by a revolute pair I, the other end of the connecting rod is rotatably connected to the slider II by a revolute pair II. The slider II is slidably connected to the planar curved rail II.