Portable device for machining a workpiece
The invention relates to a portable digitally controlled device for machining a workpiece ( 10 ) comprising a machining module ( 200 ) which comprises: at least one machining head bearing a machining tool; means for moving the machining head along at least two axes perpendicular to each other; a digital control unit configured to be able to control the means for moving the machining head, characterized in that the machining device further comprises a module ( 100 ) for clamping the machining module to the workpiece, the clamping module ( 100 ) comprising: means for removably attaching ( 106, 108; 130 ) the clamping module ( 100 ) to the workpiece ( 10 ); means for removably mounting ( 142, 144 ) the machining module ( 200 ) to the clamping module ( 100 ).
1 . A portable digitally controlled device for machining a workpiece, comprising
a machining module;
a clamping module for clamping the machining module to the workpiece, the clamping module comprising:
means for removably attaching the clamping module to the workpiece,
means for removably mounting the machining module to the clamping module;
a flat frame adapted to be able to come at least partially to bear against an edge of the workpiece,
wherein the means for removably attaching the clamping module to the workpiece comprise tightening means formed by means for positioning and pre-tightening the clamping module onto the workpiece and means for final tightening of the clamping module onto the workpiece,
wherein the means for positioning and pre-tightening the clamping module onto the workpiece comprise a jaw formed by two tables extending parallel to each other, respectively fixed and mobile relative to the frame of the clamping module, the mobile table being slidably mounted on the frame and connected to means for actuating the mobile table to allow movement of the mobile table towards the fixed table while clamping the workpiece between them, wherein the means for actuating the mobile table comprises:
a first lateral groove extending on one side of the frame of the clamping module and a second lateral groove extending on the other side of the frame of the clamping module,
a first linear guide shoe carried by one lateral end of the mobile table and slidably housed in the first lateral groove and a second linear guide shoe carried by the other lateral end of the mobile table and slidably housed in the second lateral groove,
a belt connecting each of the first and second guide shoes to an operating handle carried by the frame and configured to be movable from a first position wherein the belt extends so as to hold the mobile table at a predetermined distance from the fixed table to at least a second position wherein the belt exerts on the mobile table an action pulling the mobile table towards the fixed table so as to be able to clamp the workpiece between the fixed and mobile tables.
2 . The machining device according to claim 1 , wherein:
the operating handle is rotatably mounted on the frame along an axis perpendicular to the frame,
the belt is an elastic belt that connects each guide shoe and the operating handle, passing through a return pulley integral with the frame and having an axis parallel to and distant from the axis of rotation of the operating handle.
3 . The machining device according to claim 2 , further comprising friction pieces housed on the perimeter of the frame which enclose the elastic belt.
4 . The machining device according to claim 1 , wherein the means for final tightening of the clamping module onto the workpiece comprises at least one clamp configured to be able to extend on either side of the workpiece, once the clamping module has been fixed to the workpiece, by exerting opposing forces on the fixed and mobile tables of the means for positioning and pre-tightening the clamping module onto the workpiece.
5 . The machining device according to claim 1 , wherein the device further comprises means for referencing the machining device with respect to the workpiece.
6 . The machining device according to claim 5 , wherein the means for referencing the machining deice comprises a viewing window equipped with a marker intended to be positioned by an operator opposite a visual marker on the workpiece.
7 . The machining device according to claim 6 , wherein the viewing window is carried by the fixed table of the pre-tightening means.
8 . The machining device according to claim 1 , wherein the means for removably mounting the machining module to the clamping module comprises:
a peripheral shoulder provided on the clamping module shaped around the perimeter of the machining module so as to form a housing for receiving the machining module,
pivoting locking tabs mounted on the clamping module and configured to be movable from a first position wherein the machining module is freely insertable into the receiving housing formed by the peripheral shoulder to a second position wherein the pivoting locking tabs are pivoted and provide for the clamping of the machining module against the clamping module and prevent the machining module from becoming dislodged.
9 . The machining device according to claim 1 , wherein the workpiece is a wooden workpiece.