Mobile device for machining a workpiece
A mobile device for machining a workpiece, the mobile device including a shaft rotatable about a rotation axis; a carriage rotatable with the shaft about the rotation axis and axially, or radially displaceable relative to the rotation axis; a tool support for a cutting tool, the tool support connected to the carriage and displaceable along a carriage axis and in a direction perpendicular to the carriage axis; and a transmission that couples the shaft to the tool support and the carriage so that the tool support is displaceable along a path that includes an axial and a radial movement component relative to the shaft.
1 . A mobile device for machining a workpiece, the mobile device comprising:
a shaft rotatable about a rotation axis corresponding to an axis of the workpiece;
a carriage supported on the shaft and axially guided in an axial groove of the shaft, the carriage is rotatably fixed to the shaft and axially displaceable along the rotation axis;
a tool support for a cutting tool, the tool support connected to the carriage by a linear support, the linear support includes a first support rod arranged on one radial side of the shaft and a second support rod arranged on an opposite radial side of the shaft, each of the first and second support rods is supported within a respective through hole in the carriage, the tool support is attached to a respective first end of the first and second support rods, an opposing respective second end of each of the first and second support rods is attached to a support plate, and the tool support is displaceable relative to the carriage in a direction perpendicular to the rotation axis;
a mechanical continuous transmission includes the linear support, a first transmission arm arranged on the one radial side of the shaft and mounted on the first support rod, a second transmission arm arranged on the opposite radial side of the shaft and mounted on the second support rod, a first connection lever, and a second connection lever; and
a support block rotatably fixed to the shaft, the carriage is movable axially along the shaft relative to the support block,
wherein each of the first connection lever and the second connection lever is pivotably connected at a respective first end to the support block, the first connection lever is pivotably connected at a second end to the first transmission arm, and the second connection lever is pivotably connected at a second end to the second transmission arm, and
wherein any axial movement of the carriage along the shaft causes a radial movement of the tool support perpendicular to the shaft via the linear support such that the cutting tool is moved in a curved path.
2 . The device according to claim 1 , further comprising:
a spindle that cooperates with a nut that is connected to the carriage,
wherein the spindle runs parallel to the shaft and is rotatable about a longitudinal axis of the spindle so that a movement of the carriage relative to the shaft is generatable in an axial direction of the shaft from a rotation of the spindle that axially displaces the nut.
3 . The device according to claim 1 , wherein the carriage comprises two half shells that respectively envelop half of the shaft and that are connected with each other by fastening elements in a disengageable manner.
4 . The device according to claim 1 , wherein the support block comprises two half shells that respectively envelop half of the shaft and that are connected with each other by fastening elements in a disengageable manner.