Method of directing the movement of a tool as part of a process to remove material from a block of material
AssigneeOpen Mind Software Technologies GmbH
InventorJosef Koch
Life of this patent
Estimating the term…
Abstract
A method of guiding a tool for machining a work piece of a material block, the material-removing work portion of the tool being guided to move along a first guide path while a further point on the axis of the tool, which is located at a distance from the work portion, is guided along a prescribed second guide path, whereby the five kinematic coordinates of the movement of the tool are fully determined.
Claims14
A method of guiding a tool having a working portion, to machine a work piece of a prescribed shape from a material block, comprising the steps of:
- moving the working portion of the tool along a first guide path extending along an essentially planar guide surface of said block;
- intersecting said first guide path at a first point on an axis of the tool during said moving step, such that said axis is at an orientation with respect to said guide surface;
- and
- moving a second point on said axis of said tool, which is located at a predetermined distance from said first guide path, along a prescribed second guide path;
- and wherein said first point is moved along said first guide path at a uniform speed, and wherein said second guide path is represented by an assembly of approximation curves that approximate a portion of the prescribed shape such that the third derivative of said second guide path with respect to time is defined.
A method of guiding a tool having a working portion, to machine a work piece of a prescribed shape from a material block, comprising the steps of
- moving the working portion of the tool along a first guide path extending along an essentially planar guide surface of said block;
- intersecting said first guide path at a first point on an axis of the tool during said moving step, such that said axis is at an orientation with respect to said guide surface;
- moving a second point on said axis of said tool, which is located at a predetermined distance from said first guide path, along a prescribed second guide path;
- wherein said first point is moved along said first guide path at a uniform speed, and wherein said second guide path is represented by an assembly of approximation curves that approximate a portion of the prescribed shape such that the third derivative of said second guide path with respect to time is defined;
- and
- calculating in advance for each position of said first point on the first guide path and the associated orientation of said axis of said tool, to determine when a geometrical envelope of said tool will have an interference with a surface topography of said work piece, and when an interference is found in a place other than the working portion of said tool, predicting a collision between said tool and said work piece.
Dependencies are inferred from the claim text.