A method for detecting a phase on a gear includes obtaining a first determination result indicating whether the gear has been detected at a first detection position. A second determination result indicating whether the gear has been detected at a second detection position is obtained. A third angle between the first and second angles is obtained. A third determination result indicating whether the gear has been detected at a third detection position is obtained. The first angle is replaced with the third angle when the third and first determination results are same, or the second angle is replaced with the third angle when the third and first determination results are different. The phase on the gear is detected based on an angle that is between the first angle and the second angle.

The invention relates to a method for machining a toothing of a workpiece held in a clamping, in which method a toothing tool that rotates about its rotational axis and comprises cutting edges is brought into in particular rolling chip-removing machining engagement with the toothing that in particular rotates about its rotational axis, in order to produce a predetermined tooth flank end geometry in one or more machining passes, wherein during the machining pass which produces the tooth flank end geometry, monitoring responsive to the event of a removed chip being pressed into a machined tooth flank of the toothing by means of the in particular rolling machining process is carried out and, if the monitoring responds, an additional toothing machining process that removes the material protrusion on top of the tooth flank end geometry formed by the chip that was pressed in during the event which occurred is implemented in particular automatically, which process is carried out in particular in the same clamping of the workpiece and in particular by means of the toothing tool itself.

A method of configuring a machine (201) for production of a thread, having a pitch (227), on a workpiece (310), the machine (201) comprising: a tool (220) having a thread (223) centred on a first axis (250) and comprising one or more thread-producing peaks (225) for producing the thread having the pitch (227); and a tool holder (210) holding the tool (220), the method comprising: determining a first distance (441), in a first direction (260) parallel to the first axis (250), from a reference position (412) of the tool holder (210) to a first thread-producing peak (226) on the tool (220) when said tool (220) is held in the tool holder (210); and setting a first configuration (401) of the machine (201) wherein the reference position (412) of the tool holder (210) has a displacement (440) parallel to the first axis (250) from a reference position (411) of the workpiece (310) depending only upon: the determined first distance (441); a translation (443) parallel to the first axis (250) to account for an angular offset (340) between the first thread-producing peak (226) and a desired thread start position (311) on the workpiece (310); and an integer multiple (444) of the pitch (227).

Disclosed are threading device and threading method, including a turning step for threading a rotating workpiece with a predetermined cutting depth, by relatively moving a tool in the axial direction of the workpiece and then rounding-up the workpiece obliquely by relatively moving the tool in the axial direction and radially outward. The workpiece is subjected to the threading process by repeatedly carrying out the turning step while sequentially shifting the axial position for starting the rounding-up of the workpiece relative to an axial position where the rounding-up of the workpiece has been started in a previous turning step.

A method of operating a thread milling machine includes securing a product in a securing mount proximate to the thread milling machine, the thread milling machine having a spindle; securing a combination tool to the spindle, the combination tool having a body and an insert, the body having a first end and a second end, the body defining a securing pocket, the insert secured proximate to the second end at a first side of the securing pocket, the second end attached to the spindle; and rotating the spindle.

An automatic screw tightening module includes a plate assembly, an input module, a screwdriver module, a transmission module, a movable module, an elastic element and a position sensor. The screwdriver module includes a screwdriver and a screwdriver sleeve. The transmission module is connected with an input terminal of the input module and the screwdriver sleeve for allowing the input terminal, the transmission module and the screwdriver sleeve to be rotated synchronously. The movable module is movably disposed on a base plate of the plate assembly. The movable module includes a bearing, and portion of the screwdriver sleeve is accommodated in the bearing, so that the screwdriver module and the movable module are moved relative to the base plate. The elastic element is disposed on the base plate and connected with the movable module. The position sensor is disposed on the base plate for sensing a displacement of the movable module.

A numerical control apparatus includes: a thread-whirling motor controller controlling, based on a thread lead representing a movement amount of a thread whirling tool per rotation of a workpiece, a reference differential speed representing a difference between a predetermined reference rotational speed of the thread whirling tool and a rotational speed of the workpiece, the number of tool blades of the thread whirling tool, and a workpiece spindle speed representing the rotational speed of the workpiece, a first motor moving the thread whirling tool, a second motor rotating the thread whirling tool, and a third motor rotating the workpiece. The thread-whirling motor controller controls: the first motor based on the thread lead and the reference differential speed; the second motor based on the thread lead, the reference differential speed, the number of tool blades, and the workpiece spindle speed; and the third motor based on the workpiece spindle speed.

The invention relates to a method for creating or machining toothings on workpieces in rolling machining engagement, in particular by gear shaping, in which an NC control of the rotary spindle drives of workpiece and tool comprises regulation of the rotation angle position of each particular spindle to setpoints depending on the process parameters associated with the process design underlying the method, wherein data containing information relating to a deflection, caused by the process forces that arise during machining and resulting in profile shape deviations on the workpiece, of the position of the tool flanks of tool and workpiece out of their position intended as per the process design, are used to determine a correction, taking the deflection into account, of the rotation angle position of workpiece spindle and/or tool spindle and thus to modify the setpoints of the regulation.

Method for the chip-producing machining of a gear wheel workpiece in a machine using 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, wherein the chip-producing machining is defined by method parameters, the method including computer-assisted analysis of the production of chips on the multiple cutting edges of the cutting tool; computer-assisted ascertainment of relative forces which will occur on the multiple cutting edges of the cutting tool during the production of chips; optimizing the chip-producing machining to prevent the relative forces from exceeding a predetermined limiting value or reaching a limiting range, wherein adapted method parameters are provided in the scope of the optimization by an adaptation of at least one of the method parameters, and carrying out the chip-producing machining of the gear wheel workpiece using the adapted method parameter(s).

A method of preparing a machining process of a toothed workpiece rotatably drivable around its rotation axis, the machining process to be executed by a tool rotatably drivable around its rotation axis, wherein, for establishing a synchronized matching engagement of the tool with the workpiece toothing, a contact with the workpiece can be or is generated by performing a movement via a positioning axis, and, by means of a surveillance of a movement dedicated to an axis of motion, a contact to the workpiece is used for establishing information about a relative rotary position of the workpiece, whereby the contact is made by a portion of the tool and the dedicated axis of motion is an axis capable to move or rotate the workpiece or the tool but which is not the positioning axis.