A comprehensive method for calibration of volumetric positioning accuracy of CNC-machines

Tool path accuracy enhancement through geometrical error compensation

“…This vector is the spatial deviation between the nominal and real position of tool and is named as volumetric error vector. Some specifications of an appropriate model for the post processing software are: Many researchers have suggested a wide range of error modeling methods [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. In the present work, a revised version of kinematic modeling method has been used.…”

“…Young and Lee [9] developed an on-machine measuring instrument combined with a neural network based model and investigated the accuracy of work piece through machine tool thermal and geometrical errors. Lee et al [10] modeled a 3-axis vertical CNC machine tool by homogenous transformation matrix and developed a compensation algorithm to eliminate the volumetric error at the target point of tool transferring position. Kyoung et al [11] considered machine tool error concepts and focused on the backlash phenomena in geometrical errors.…”

“…Machine tool kinematic and geometric errors [1][2][3][4][5][6][7][8][9][10][11][12][13]17,18] Thermally induced errors [9], [14] Errors due to machine structure rigidity weakness [15][16][17]19] Machining process dependent errors mainly rise from tool deflection and instability of cutting processes. Optimization of cutting parameters (depth of cut, cutting speed, feed rate, etc.)…”

Analysis–synthesis of dimensional deviation of the machining feature for discrete-part manufacturing processes

“…(31) and (32) into Eqs. (5) and (9) Table 4), the workpiece displacement owing to datum errors is larger than the displacement of workpiece due to the local contact compliance. In particular, the stiffness of the workpiece is relatively high.…”

“…All kinds of error models have been established and corresponding measures to compensate local deviation have been utilized. A substantial body of literature can be found on the modeling and compensation of geometric errors [4][5][6][7][8][9], thermal errors [10][11][12][13], fixture-induced errors [14][15][16][17], and force-induced errors [18][19][20]. These techniques address the links between product dimensional quality and local process error sources in a single machining operation.…”