A method for controlling a level of screwing quality of a screwdriver relative to a predetermined screwing objective. The method includes: obtaining, at a predetermined angular frequency, a series of doublets representative of a rise in screwing torque for at least one screw, constituting a first table of values, each doublet including an angle value and a torque value; determining, from the first table, a second table of values presenting the torque as a function of the angle and being representative of the true characteristic of the at least one screw; determining a third table of values, presenting the torque as a function of the angle and being representative of disturbances induced by the screwdriver during the rise in torque, from the first and second tables; analysis of the third table, delivering information representative of a dispersion and/or a deviation relative to the screwing objective, resulting from the screwdriver-induced disturbances.

A method for producing a tooth geometry includes selecting a root-side starting contour configured as an ellipse segment and a head-side partial contour of a tooth; selecting an adaptation region for at least a part of the root-side starting contour; determining for the adaptation region a correction specification determined using a correction function configured as an at least third-order polynomial having at least one adjustable function parameter comprising adjustable coefficients; modifying the root-side starting contour using the correction specification to form a root-side final contour, and producing the tooth geometry by chip-removing machining based on the head-side partial contour and the root-side final contour. Also disclosed are a computer program product for carrying out the method, a tool for manufacturing the tooth geometry based on the method, and a machine component having the tooth geometry.

A machine tool includes a workpiece holder, a tool holder holding working tools that includes a hob cutter used in a rough machining and a skiving cutter used in a finish machining, a tool magazine, a tool replacing device replacing one of the working tools mounted on the tool holder with the other of working tools housed in the tool magazine, a rough machining controlling section performing the rough machining on the workpiece, a tool measuring device measuring a position of a blade in a rotation direction of the skiving cutter, an angle correcting section correcting a rotation angle of the skiving cutter based on a result measured by the tool measuring device, and placing a tooth space formed in the workpiece and an edge tip of the blade in a position corresponding to each other, and a finish machining controlling section by which workpiece is finish machined.

It is possible to suppress core misalignment from occurring due to relative vibration between a cutting tool and a workpiece, to improve accuracy of a finished shape, and to suppress a tip of the cutting tool from being influenced. A numerical controller that causes a machine tool to perform an operation for performing thread cutting through which a cutting tool and a machining target are allowed to move relative to each other to perform cutting-in processes a plurality of times on the machining target to form a thread on the machining target, including: a driver that controls a spindle that rotates the machining target, and drive axes having three axes; a vibration superimposing unit that superimposes vibration to be applied to two axes or more among the three axes on the relative movement between the cutting tool and the machining target so that the cutting tool and the machining target vibrate relative to each other along a thread groove; and a thread cutting vibration adjusting unit that shifts, by a vibration phase shift amount set beforehand, a phase of the vibration relative to a phase of the spindle per each of the cutting-in processes to be performed the plurality of times.

Method for hard machining of a precut and heat-treated gearwheel workpiece using a tool in a gear processing machine, having sensors and/or detectors, comprising: providing target data of the workpiece, determining a first relative movement of the tool relative to the workpiece based on the target data, executing the first relative movement, wherein an NC-controller brings the tool into contact with the workpiece in a controlled manner by the execution of the first relative movement, providing real-time measured values and movement data by means of the sensors and/or detectors during the execution of the first relative movement, performing an analysis of the real-time measured values together with the movement data and determining adapted, workpiece-specific relative movements, hard machining at least one region of a tooth of the workpiece, wherein the NC-controller executes the adapted, workpiece-specific relative movements of the tool relative to the workpiece.

A method for the chip-producing machining of a gear wheel workpiece in a machine uses a cutting tool having at least two geometrically defined cutting edges, which produce material in chip form on the gear wheel workpiece during chip-producing machining. The chip-producing machining is defined by method parameters. The method includes computer-assisted analysis of the production of chips on the multiple cutting edges of the cutting tool and computer-assisted ascertainment of relative forces which will occur on the multiple cutting edges of the cutting tool during the production of chips. The method further includes optimizing the chip-producing machining to prevent the relative forces from exceeding a predetermined limiting value or reaching a limiting range. The optimization step includes providing adapted method parameters by modifying at least one of the method parameters. Chip-producing machining of the gear wheel workpiece is performed using the adapted method parameter(s).

A control device adapted to control a robot including a robot arm provided with a force detector includes a processor that is configured to execute computer-executable instructions so as to control the robot, wherein the processor is configured to: operate the robot arm to move a screw gauge which is disposed on a tip side of the force detector of the robot arm, used for an inspection of a screw hole, and provided with an external thread, to make the external thread have contact with the screw hole; then detect force applied to the screw gauge using the force detector to perform force control in a direction perpendicular to a direction of an axis of the screw hole based on detection information of the force detector; and operate the robot arm to move the screw gauge based on the force control.

The invention relates to a method for machining toothings, which method uses a disk-shaped, toothed tool that is rotationally driven about its axis of rotation and has a geometrically defined cutting edge. The tool teeth are produced from a base material, are provided, at least on the tooth flanks, with a coating that improves wear resistance, and have machining surfaces facing an end face of the tool, said machining surfaces being re-ground from time to time when the tool is reconditioned, wherein after at least one regrinding, use of the tool is resumed and continued with regions of the machining surfaces formed along the cutting edges from the base material.

A machine learning device includes: a state information acquisition unit configured to cause the control device to execute a tapping program to acquire from the control device, state information including a torque command value with respect to the spindle motor, a drive state including deceleration, a ratio of a movement distance in acceleration and a movement distance in deceleration; an action information output unit configured to output action information including adjustment information of the ratio of the movement distance in acceleration and the movement distance in deceleration, to the control device; a reward output unit configured to output a reward value in reinforcement learning based on a torque command value in deceleration, and a target torque command value in deceleration; and a value function update unit configured to update an action value function based on the reward value, the state information, and the action information.

An impeller manufacturing apparatus includes an end mill driving unit having an end mill mounted thereon, a material driving unit configured to move a material, and a control device configured to control the end driving unit and the material driving unit to enable a side surface portion of the end mill to machine the material.