摘要:
A numerical controller controlling a 5-axis machine tool compensates setting error that arises when a workpiece is set on the table. Error in the three linear axes and the two rotation axes are compensated using preset error amounts to keep the calculated tool position and tool direction in a command coordinate system. If a trigonometric function used for error compensation has a plurality of solution sets, the solution set closest to the tool direction in the command coordinate system is selected from the plurality of solution sets and used as the positions of the two rotation axes compensated in the above error compensation.
摘要:
A numerical controller controlling a 5-axis machine tool compensates setting error that arises when a workpiece is set on the table. Error in the three linear axes and the two rotation axes are compensated using preset error amounts to keep the calculated tool position and tool direction in a command coordinate system. If a trigonometric function used for error compensation has a plurality of solution sets, the solution set closest to the tool direction in the command coordinate system is selected from the plurality of solution sets and used as the positions of the two rotation axes compensated in the above error compensation.
摘要:
A work is installed on a table of a machine tool, and the coordinate system on the work is (X′, Y′, Z′). Each three points on respective three faces of the work, which are orthogonal to one another, A, B, C, D, E, F, G, H and I, are detected with a touch probe. From three points on the same plane, each of three formulas of planes which lies on the three points, respectively, are obtained. A position O′ (XO, YO, ZO) of a point where the three plane intersect with one another is obtained. This position is a parallel translation error. From these three plane formulas, points on the X′, Y′ and Z′ axes each being distant from the position O′ by the length L are obtained. Rotation matrices are obtained from the respective points, position O′ (XO, YO, ZO), and L. Rotary direction errors are obtained using the rotation matrices. In this manner, a work location error which is composed of the three-dimensional parallel translation error and three-dimensional rotary direction errors is obtained.
摘要翻译:工件安装在机床的工作台上,工件上的坐标系为(X',Y',Z')。 A,B,C,D,E,F,G,H和I彼此正交的工件的相应三个面上的每个三个点都用探针检测。 从同一平面上的三个点,分别得到位于三个点上的三个平面的三个公式。 获得三个平面彼此相交的点的位置O'(X O,O,Y O,Z O O)。 这个位置是平行翻译错误。 通过这三个平面公式,可以得到X',Y',Z'各自远离位置O'长度L的点。 旋转矩阵从相应的位置获得,位置O'(X O,O,O,Z O O)和L.旋转方向误差 使用旋转矩阵获得。 以这种方式,获得由三维平行平移平移误差和三维旋转方向误差构成的作业位置误差。
摘要:
A numerical controller for controlling a multi-axis machine calculates an axis-dependent translation error amount and an axis-dependent rotation error amount based on a command axis position. Translation and rotation compensation amounts are calculated based on the axis dependent translation and rotation error amounts, respectively. The translation and rotation compensation amounts are added to command linear and rotary axis positions, respectively. Three linear axes and three rotary axes are driven to the added positions, individually. Thus, there is provided a numerical controller that enables even machining with a side face of a tool or boring to be in commanded tool position and posture (orientation) in the multi-axis machine.
摘要:
A numerical controller controls a three-axis machine tool that machines a workpiece, mounted on a table, with at least three linear axes. The numerical controller includes a workpiece mounting error compensation unit that compensates a mounting error caused when the workpiece is mounted. The workpiece mounting error compensation unit performs an error compensation with respect to an instructed linear-axis position with amounting error which is set beforehand, in order to keep a position with respect to the workpiece at a tool center point position, based on the instructed linear-axis position of the three linear axes to obtain a compensated linear-axis position. The three linear axes are driven based on the obtained compensated linear-axis position.
摘要:
The shapes of machine parts for which the possibility of interference exists are defined as rectangular parallelepipeds and it is judged whether or not there is interference between a first rectangular parallelepiped of a first machine part and a second rectangular parallelepiped of a second machine part. The method involves rotating the first rectangular parallelepiped and second rectangular parallelepiped so that each side of the first rectangular parallelepiped lies parallel to each axis of the reference coordinate system. Interference is thus judged based on whether any vertex of the second rectangular parallelepiped exists within the first rectangular parallelepiped. Likewise, interference is judged depending on whether any vertex of the first rectangular parallelepiped exists within the second rectangular parallelepiped. Further, interference between the respective sides of the first rectangular parallelepiped and second rectangular parallelepiped is judged through division into the planes X-Y, Y-Z, and Z-X. When it is judged that interference exists in all planes, it is judged that there will be interference between the first rectangular parallelepiped and second rectangular parallelepiped.
摘要:
A numerical controller for controlling a multi-axis machine calculates an axis-dependent translation error amount and an axis-dependent rotation error amount based on a command axis position. Translation and rotation compensation amounts are calculated based on the axis dependent translation and rotation error amounts, respectively. The translation and rotation compensation amounts are added to command linear and rotary axis positions, respectively. Three linear axes and three rotary axes are driven to the added positions, individually. Thus, there is provided a numerical controller that enables even machining with a side face of a tool or boring to be in commanded tool position and posture (orientation) in the multi-axis machine.
摘要:
A numerical controller for controlling a multi-axis machine tool having three linear axes and three rotating axes obtains an interpolated tool direction vector by interpolating a tool direction command and computes multiple solutions for three rotating axes from the vector. The three rotating axis positions are computed by synthesizing these multiple solutions. The three linear axis positions on a machine coordinate system are computed by adding to the interpolated tool center point position the product of the interpolated tool direction vector, or a verified tool direction vector based on the three rotating axis positions determined by the rotating axis position computing means, and a tool length compensation amount. The three rotating axes are moved to the positions computed above and the three linear axes are moved to the positions computed above.
摘要:
A work is installed on a table of a machine tool, and the coordinate system on the work is (X′, Y′, Z′). Each three points on respective three faces of the work, which are orthogonal to one another, A, B, C, D, E, F, G, H and I, are detected with a touch probe. From three points on the same plane, each of three formulas of planes which lies on the three points, respectively, are obtained. A position O′ (XO, YO, ZO) of a point where the three plane intersect with one another is obtained. This position is a parallel translation error. From these three plane formulas, points on the X′, Y′ and Z′ axes each being distant from the position O′ by the length L are obtained. Rotation matrices are obtained from the respective points, position O′ (XO, YO, ZO), and L. Rotary direction errors are obtained using the rotation matrices. In this manner, a work location error which is composed of the three-dimensional parallel translation error and three-dimensional rotary direction errors is obtained.
摘要翻译:工件安装在机床的工作台上,工件上的坐标系为(X',Y',Z')。 A,B,C,D,E,F,G,H和I彼此正交的工件的相应三个面上的每个三个点都用探针检测。 从同一平面上的三个点,分别得到位于三个点上的三个平面的三个公式。 获得三个平面彼此相交的点的位置O'(X O,O,Y O,Z O O)。 这个位置是平行翻译错误。 通过这三个平面公式,可以得到X',Y',Z'各自远离位置O'长度L的点。 旋转矩阵从相应的位置获得,位置O'(X O,O,O,Z O O)和L.旋转方向误差 使用旋转矩阵获得。 以这种方式,获得由三维平行平移平移误差和三维旋转方向误差构成的作业位置误差。
摘要:
The shapes of machine parts for which the possibility of interference exists are defined as rectangular parallelepipeds and it is judged whether or not there is interference between a first rectangular parallelepiped of a first machine part and a second rectangular parallelepiped of a second machine part. The method involves rotating the first rectangular parallelepiped and second rectangular parallelepiped so that each side of the first rectangular parallelepiped lies parallel to each axis of the reference coordinate system. Interference is thus judged based on whether any vertex of the second rectangular parallelepiped exists within the first rectangular parallelepiped. Likewise, interference is judged depending on whether any vertex of the first rectangular parallelepiped exists within the second rectangular parallelepiped. Further, interference between the respective sides of the first rectangular parallelepiped and second rectangular parallelepiped is judged through division into the planes X-Y, Y-Z, and Z-X. When it is judged that interference exists in all planes, it is judged that there will be interference between the first rectangular parallelepiped and second rectangular parallelepiped.