The method can include measuring the tridimensional positions of a reference feature for a first at least three different angular positions of the reference feature around the first rotation axis and a same first reference angular position around the second rotation axis, the reference feature being fixed relative to the component; and measuring the tridimensional positions of the reference feature for a second at least three different angular positions of the reference feature around the first rotation axis and a same second reference angular position around the second rotation axis.

A method for ascertaining and correcting the defective machine state and/or at least one defective component state of a machine tool includes ascertaining the state using imaging and analysis of a cut edge produced and comparing with selected machine parameters and making the correction by way of a maintenance instruction based on the machine state for maintaining the machine tool.

Disclosed is a position controller for a tilting head in a machining center. The position controller includes an offset attachment having a body combined to the tilting head and a spherical contact secured to the body, an offset detector built in the machining center such that the offset detector move out into a process area of the machining center and automatically detects a tool offset from a contact point with the spherical contact, a storing unit individually storing first and second tool offsets by respective rotation positions of the tilting head, and an operator generating a transform offset of the first tool offset by a rotational transform and a center error vector from the transform offset and the second tool offset. Accordingly, the center error of the tilting head is automatically detected and corrected in the machining center.

To provide a motor control device, motor control method, and non-transitory computer readable medium recording a motor control program, which add a backlash correction amount to a position command for a motor at the appropriate timing. Included are a first position detection part that detects a first position which is a position of a movable part; a second position detection part that detects a second position which is a position of a driven part; a positional error calculation part that calculates positional error, which is deviation between a converted first position detected value and a second position detected value; and a backlash correction part that adds a backlash correction amount when the absolute value for the variation of the positional error since reversal of a position command was detected exceeds the predetermined reference value.

An industrial machinery includes: a drive mechanism driving a control target that moves work or a tool; a motor; a first sensor detecting a position of the control target; a second sensor detecting a position of the motor; a current controller controlling a supply current to the motor; a servo controller outputting a torque instruction to the current controller; and a numerical controller calculating a processing force of the control target to the work based on position information on the control target acquired from the first sensor, position information on the motor acquired from the second sensor, and the torque instruction, the numerical controller determining that the tool is in failure if an absolute value of a first component of the processing force becomes equal to or larger than a first threshold value while processing the work, the first component having a frequency lower than a predetermined frequency.

Some embodiments facilitate creation of an industrial asset item via an additive manufacturing process wherein motion is provided between a build plate and a print arm. A correction engine may receive, from an industrial asset item definition data store containing at least one electronic record defining the industrial asset item, the data defining the industrial asset item. A correction engine computer processor may then correct the motion provided between the build plate and the print arm such that the motion deviates from a path indicated by the data defining the industrial asset item. The three-dimension printer may be a rotary printer such that the build plate rotates about a vertical axis and moves along the vertical axis during printing. In these cases, a pre-compensation algorithm may be applied to correct the motion provided between the build plate and the print arm before transmitting data to the three-dimensional additive manufacturing printer.

An error compensation method includes outputting at least one of a plurality of calibration-master conditions including a type of a calibration master that includes targets, obtaining measurement values of positions of the targets by detecting the positions of the plurality of targets under the calibration-master condition using a sensor mounted to the main spindle, and calculating an error value using the measurement value and a calibration value of the position of the target. The error compensation method further includes approximating a relation between the measurement values and the error values by a curve and a straight line, calculating a compensation parameter of a positioning error of a translational axis based on an approximate curve in a partial range of a stroke of the translational axis, and calculating the compensation parameter of the positioning error based on an approximate straight line in another range of the stroke of the translational axis.

A numerical controller controlling punching performs punching according to a machining program, detects a phenomenon that the punching is not normally completed, collects and stores information required for re-execution of a block in which the phenomenon is generated, and restores a machining state at the time of occurrence of the phenomenon and further re-executes the punching by using the information.

The method can include measuring the tridimensional positions of a reference feature for a first at least three different angular positions of the reference feature around the first rotation axis and a same first reference angular position around the second rotation axis, the reference feature being fixed relative to the component; and measuring the tridimensional positions of the reference feature for a second at least three different angular positions of the reference feature around the first rotation axis and a same second reference angular position around the second rotation axis.

An evaluation work piece which is machined with a multi-axis machine tool that includes three linear axes and one or more rotary axes includes: at least one of a curved surface portion in which the inclination of a tool is changed, a boundary portion of two regions of a flat surface which is machined at different angles of the tool and which includes the two adjacent regions and a corner portion in which the amount of movement of the rotary axis is larger than the amount of movement of a tool tip point. The curved surface portion is preferably formed to be a free curved surface. Preferably, the evaluation work piece includes: a stage-shaped machined portion; and a twisted machined portion which is formed on the stage-shaped machined portion, the boundary portion is formed in the front surface of the stage-shaped machined portion and the curved surface portion and the corner portion are formed in the twisted machined portion.