Abstract: A triaxial driving device for electrodischarge machine tools having a three-liners-axes mechanism and an electrode tool and has a connecting mount, a first axial rotator, a base, a supporting arm, a second axial rotator, a third axial rotator and an electrode holder. The connecting mount is connected securely to the three-liners-axes mechanism. The first axial rotator is mounted in the connecting mount and has a rotating head. The base is connected securely to the rotating head of the first axial rotator and has a space. The supporting arm is rotatably mounted in the space of the base and has a connecting frame. The second axial rotator is securely connected to the base and the supporting arm and has a rotating head. The third axial rotator is connected to the supporting arm and has a rotating head. The electrode holder is connected to the third axial rotator and the electrode tool.

Abstract: A triaxial driving device for electrodischarge machine tools having a three-liners-axes mechanism and an electrode tool and has a connecting mount, a first axial rotator, a base, a supporting arm, a second axial rotator, a third axial rotator and an electrode holder. The connecting mount is connected securely to the three-liners-axes mechanism. The first axial rotator is mounted in the connecting mount and has a rotating head. The base is connected securely to the rotating head of the first axial rotator and has a space. The supporting arm is rotatably mounted in the space of the base and has a connecting frame. The second axial rotator is securely connected to the base and the supporting arm and has a rotating head. The third axial rotator is connected to the supporting arm and has a rotating head. The electrode holder is connected to the third axial rotator and the electrode tool.

Abstract: An apparatus for electrode charge machining includes a T-shaped quill movable in the vertical direction, at least two linear motor yokes attached to the quill symmetrical about the fixed point of the piston rod of a counter balance device and moving in parallel, at least two linear motor permanent magnets facing the yokes, an electrode mounting device fixed at the lower end of the quill, the counter balance device for balancing a gravitational force acting on the quill and the tool electrode. The gravity balance device consists of an air cylinder with the piston rod. And the air cylinder is fixed with a support frame, with the piston rod extending down into the quill and fixed with a level plate in the quill in the coaxially with the quill.