A portable computer numerical control (CNC) machine is described. The CNC machine has an X-axis, a Y-axis, and a Z-axis, and comprises: a machine head, a base comprising a pair of X-axis guiding rails; a connecting beam and at least one Y-axis guide rail; a sub-assembly having a platform and at least one Z-axis guide rail on the platform; and a tool assembly secured to the platform of the sub-assembly, as well as corresponding X-Axis, Y-Axis and Z-axis clamps to allow the machine head to move along the X, Y, Z axes. The tool assembly of the CNC machine further allows the machine head to rotate about an axis that is perpendicular to the Z-axis.

A portable computer numerical control (CNC) machine is described. The CNC machine has an X-axis, a Y-axis, and a Z-axis, and comprises: a machine head, a base comprising a pair of X-axis guiding rails; a connecting beam and at least one Y-axis guide rail; a sub-assembly having a platform and at least one Z-axis guide rail on the platform; and a tool assembly secured to the platform of the sub-assembly, as well as corresponding X-Axis, Y-Axis and Z-axis clamps to allow the machine head to move along the X, Y, Z axes. The tool assembly of the CNC machine further allows the machine head to rotate about an axis that is perpendicular to the Z-axis.

A symmetrical tri-axial parallel spindle head capable of multi-directional fixed-point rotation, comprising three branch chains (2), a moving base (5), and a fixed base (1). A machining spindle (6) is fixedly connected onto the moving base (5). Each of the branch chains (2) comprises a servo motor (22), a branch chain rod (21), a lead screw (23), and a guide nut (25). The lead screw (23) and a linear guide rail (24) are provided in an inner cavity on one end of the branch chain rod (21). One end of the lead screw (23) is connected to the servo motor (22), the lead screw (23) passes through the guide nut (25), and the other end of the lead screw (22) is connected to the branch chain rod (21) by means a rotating pair. The guide nut (25) is mounted on the linear guide rail (24) and is rotatably connected to the fixed base (1) through a first support disc (26). The other end of the branch chain rod (21) is rotatably connected to the moving base (5) through a second support disc (28). The symmetrical three-axial parallel spindle head not only can enable the tool to achieve multi-directional fixed-point rotation around any point within a certain range of the internal space of the moving and fixed platforms merely by the parallel spindle head structure itself, but also can achieve multi-directional fixed-point rotation around the tool tip point; and the spindle head structure is symmetrical, and the motion characteristic is also symmetrical.

A symmetrical tri-axial parallel spindle head capable of multi-directional fixed-point rotation, comprising three branch chains (2), a moving base (5), and a fixed base (1). A machining spindle (6) is fixedly connected onto the moving base (5). Each of the branch chains (2) comprises a servo motor (22), a branch chain rod (21), a lead screw (23), and a guide nut (25). The lead screw (23) and a linear guide rail (24) are provided in an inner cavity on one end of the branch chain rod (21). One end of the lead screw (23) is connected to the servo motor (22), the lead screw (23) passes through the guide nut (25), and the other end of the lead screw (22) is connected to the branch chain rod (21) by means a rotating pair. The guide nut (25) is mounted on the linear guide rail (24) and is rotatably connected to the fixed base (1) through a first support disc (26). The other end of the branch chain rod (21) is rotatably connected to the moving base (5) through a second support disc (28). The symmetrical three-axial parallel spindle head not only can enable the tool to achieve multi-directional fixed-point rotation around any point within a certain range of the internal space of the moving and fixed platforms merely by the parallel spindle head structure itself, but also can achieve multi-directional fixed-point rotation around the tool tip point; and the spindle head structure is symmetrical, and the motion characteristic is also symmetrical.

A CNC machining centre is disclosed, with an additive unit that forms an unmachined workpiece by additive production and that comprises an operating member with a rotation axis, and with a subtractive unit that removes material from the unmachined workpiece formed by the additive unit and that comprises a tool-holding spindle with a motorized spindle axis, with a subtractive configuration, in which the spindle axis of the subtractive unit carries a tool for removing material, and with an additive configuration, in which the spindle axis of the subtractive unit is connected to the rotation axis to drive the operating member of the additive unit and in which a prevalent part of the tool-holding spindle is situated next to at least one part of the operating member, where “next to” means in a horizontal direction.

A CNC machining centre is disclosed, with an additive unit that forms an unmachined workpiece by additive production and that comprises an operating member with a rotation axis, and with a subtractive unit that removes material from the unmachined workpiece formed by the additive unit and that comprises a tool-holding spindle with a motorized spindle axis, with a subtractive configuration, in which the spindle axis of the subtractive unit carries a tool for removing material, and with an additive configuration, in which the spindle axis of the subtractive unit is connected to the rotation axis to drive the operating member of the additive unit and in which a prevalent part of the tool-holding spindle is situated next to at least one part of the operating member, where “next to” means in a horizontal direction.

A machine tool has: a main shaft head that supports the main shaft; a main shaft head support part which supports the main shaft head such that the main shaft head can rotate around a first axis that extends perpendicular to the main shaft axis of rotation; a first rotary feed shaft device which is provided in the main shaft head support part, and rotates and feeds the main shaft head around the first axis; a saddle which supports the main shaft head support part such that the main shaft head support part can rotate around a second axis that is perpendicular to the first axis and inclined with respect to the vertical direction; and a second rotary feed shaft device which is provided in the saddle, and rotates and feeds the main shaft head support part around a second axis of rotation.

A machine tool has: a main shaft head that supports the main shaft; a main shaft head support part which supports the main shaft head such that the main shaft head can rotate around a first axis that extends perpendicular to the main shaft axis of rotation; a first rotary feed shaft device which is provided in the main shaft head support part, and rotates and feeds the main shaft head around the first axis; a saddle which supports the main shaft head support part such that the main shaft head support part can rotate around a second axis that is perpendicular to the first axis and inclined with respect to the vertical direction; and a second rotary feed shaft device which is provided in the saddle, and rotates and feeds the main shaft head support part around a second axis of rotation.

A toothed workpiece chamfering device having a chamfering head (2) which includes a first axis of rotation (B) for rotation of a first chamfering tool (6) and a second axis of rotation (T) for rotation of a second chamfering tool (8) wherein the first and second chamfering tools are of different types and their respective material removal methods are also different from one another. Preferably, the first and second axes of rotation are not coincident with one another and in a more preferred arrangement, the first tool axis and the second tool axis are arranged perpendicularly to one another.

A symmetrical tri-axial parallel spindle head capable of multi-directional fixed-point rotation, comprising three branch chains (2), a moving base (5), and a fixed base (1). A machining spindle (6) is fixedly connected onto the moving base (5). Each of the branch chains (2) comprises a servo motor (22), a branch chain rod (21), a lead screw (23), and a guide nut (25). The lead screw (23) and a linear guide rail (24) are provided in an inner cavity on one end of the branch chain rod (21). One end of the lead screw (23) is connected to the servo motor (22), the lead screw (23) passes through the guide nut (25), and the other end of the lead screw (22) is connected to the branch chain rod (21) by means a rotating pair. The guide nut (25) is mounted on the linear guide rail (24) and is rotatably connected to the fixed base (1) through a first support disc (26). The other end of the branch chain rod (21) is rotatably connected to the moving base (5) through a second support disc (28). The symmetrical three-axial parallel spindle head not only can enable the tool to achieve multi-directional fixed-point rotation around any point within a certain range of the internal space of the moving and fixed platforms merely by the parallel spindle head structure itself, but also can achieve multi-directional fixed-point rotation around the tool tip point; and the spindle head structure is symmetrical, and the motion characteristic is also symmetrical.