A method for making a screw hole in a workpiece including a plate-shaped portion includes: preparing an auxiliary member having a flat plate shape; forming, in the plate-shaped portion, a first pilot hole having a minor diameter smaller than a major diameter of the screw hole; forming, in the auxiliary member, a second pilot hole having a minor diameter smaller than the major diameter of the screw hole; fixing the auxiliary member to the plate-shaped portion so that the first pilot hole is concentric with the second pilot hole; and making the screw hole in the plate-shaped portion and the auxiliary member by inserting a tap in the first pilot hole and the second pilot hole.

A method for making a screw hole in a workpiece including a plate-shaped portion includes: preparing an auxiliary member having a flat plate shape; forming, in the plate-shaped portion, a first pilot hole having a minor diameter smaller than a major diameter of the screw hole; forming, in the auxiliary member, a second pilot hole having a minor diameter smaller than the major diameter of the screw hole; fixing the auxiliary member to the plate-shaped portion so that the first pilot hole is concentric with the second pilot hole; and making the screw hole in the plate-shaped portion and the auxiliary member by inserting a tap in the first pilot hole and the second pilot hole.

A control device for a machine tool in which a tool used to machine a workpiece is mounted to a main spindle that is relatively movable with respect to the workpiece. The control device includes: a parameter preparing unit that stores a predetermined parameter regarding a control in advance; an evacuation unit that causes the tool to perform an evacuation operation from the workpiece; and a chip discharging unit that causes the tool to perform a chip discharging operation. The evacuation operation of the tool by the evacuation unit and the chip discharging operation by the chip discharging unit are performable at respective predetermined timings.

A control device for a machine tool in which a tool used to machine a workpiece is mounted to a main spindle that is relatively movable with respect to the workpiece. The control device includes: a parameter preparing unit that stores a predetermined parameter regarding a control in advance; an evacuation unit that causes the tool to perform an evacuation operation from the workpiece; and a chip discharging unit that causes the tool to perform a chip discharging operation. The evacuation operation of the tool by the evacuation unit and the chip discharging operation by the chip discharging unit are performable at respective predetermined timings.

Tap guide assembly devices, systems, and methods are disclosed herein. A tap guide assembly can have a body assembly, a tension pin assembly, a tension spring, and a setscrew. The body assembly can have an elongate body and a drill bushing. The drill bushing can have a diameter that is less than the diameter of the elongate body and can be positioned within a portion of the elongate body. The tension pin assembly can have a pin and a collar and can be configured to be received within the body assembly. The tension spring can be positioned proximate to the collar. The setscrew can be securely positioned proximate to the tension spring and within the second opening of the elongate body.

A tool diagnostic device includes a data acquisition unit configured to acquire, as waveform data, a state quantity of a motor for driving a tool before and after rotation of the tool stops in tapping, a reference waveform generation unit configured to generate reference waveform data, a difference waveform calculation unit configured to calculate, as difference waveform data, a difference between waveform data and the reference waveform data, a waveform feature calculation unit configured to calculate waveform feature data indicating a feature of a waveform from the difference waveform data, a learning result storage unit configured to store a learning result of learning a correlation between waveform feature data and a tool life, and a state diagnostic unit configured to diagnose a state of the tool based on the waveform feature data using a learning result.

A tool diagnostic device includes a data acquisition unit configured to acquire, as waveform data, a state quantity of a motor for driving a tool before and after rotation of the tool stops in tapping, a reference waveform generation unit configured to generate reference waveform data, a difference waveform calculation unit configured to calculate, as difference waveform data, a difference between waveform data and the reference waveform data, a waveform feature calculation unit configured to calculate waveform feature data indicating a feature of a waveform from the difference waveform data, a learning result storage unit configured to store a learning result of learning a correlation between waveform feature data and a tool life, and a state diagnostic unit configured to diagnose a state of the tool based on the waveform feature data using a learning result.

A processing system for a workpiece, with a thread formation device (44) for forming a thread in a workpiece, comprising a housing and one or more tool take-ups for a thread forming tool, rotatably and displaceably mounted in or on the housing, a linear drive and a rotational drive for the tool take-up(s) and a take-up device with one or more take-ups (19) for integrating the thread formation device (44), is characterised in that the thread formation device (44) can be integrated into the take-up device by means of a disconnectable plug connection.

A processing system for a workpiece, with a thread formation device (44) for forming a thread in a workpiece, comprising a housing and one or more tool take-ups for a thread forming tool, rotatably and displaceably mounted in or on the housing, a linear drive and a rotational drive for the tool take-up(s) and a take-up device with one or more take-ups (19) for integrating the thread formation device (44), is characterised in that the thread formation device (44) can be integrated into the take-up device by means of a disconnectable plug connection.

The whirling device comprises a retaining ring extending around a ring axis and a central opening and having at least one receiving area for a machining element for machining rod-shaped material in the area of the central opening. A coolant supply comprises a supply sleeve which is arranged on the retaining ring via a rotary bearing and comprises a coolant connection and a supply area adjoining a connection area of the retaining ring. Starting from at least one inlet opening in the connection area of the retaining ring, at least one passage leads through the retaining ring to at least one outlet opening which faces the central opening of the retaining ring and is designed for a machining element in a receiving area. No space is required for the coolant supply between the retaining ring and an assigned lathe.