A tool for installing or removing a wire thread insert. This tool includes a spindle body having an actuator which can be moved axially therein. The actuator interacts with an entraining blade. By the axial movement of the actuator, the entraining blade can be extended out of the axial recess and retracted back into it.

An automatic installation machine, which is connectable to a tool so as to install a wire thread insert in a thread bore, includes a drive unit providing movement between a first and a second rotation direction, a setting spindle in rotation coupling with the drive unit so that during a transmission of a rotation movement from the drive unit, the setting spindle is displaceable in longitudinal direction independent of the rotation movement. A first pneumatic cylinder has a movable piston oriented parallel to the longitudinal direction of the setting spindle and coupled with an offset with the setting spindle so that the setting spindle is axially displaceable by the pneumatic cylinder. An actuating mandrel is arranged within the setting spindle and is driven rotation free, and the installation machine includes a tool chuck via which the tool for installing the insert is connectable with the setting spindle.

The installation tool for a wire thread insert includes: a drive unit which provides a switchable rotation movement between a first and a second direction, a mandrel body with a drive section for rotating the mandrel body and with a drive section for rotating the mandrel body and with a thread section onto which the wire thread insert can be screwed or rotated on, an installation blade as well as a torque clutch consisting of a form-fit and force-fit clutch upper and lower parts engaging each other, of which the upper part is connected with the drive unit in a torque-proof manner and the lower part is connected with the mandrel body in a torque-proof manner. With a decoupled relative rotation between the clutch parts, caused by exceeding a limit torque between the clutch parts, relative movement between the mandrel body and the installation blade can be generated.

A hollow-cylindrical preloading cartridge of an installation tool of a wire thread insert has a mandrel channel extending within the preloading cartridge, in which an assembly mandrel with an installation end and a drive end is guided in an inner mandrel guiding thread. The cartridge has an outer wall which encompasses the mandrel channel at least partly with a radial positioning window adjacent to a first axial end of the preloading cartridge facing away from the drive end of the assembly mandrel, through which a wire thread insert is positionable on the assembly mandrel. At least one first tactile detection unit projects beyond a ring-like front side of the cartridge on the first axial end and is offsetable parallel to a longitudinal axis of the cartridge, wherein an axial offset of the at least one tactile detection unit can be detected with a first detection sensor of the cartridge.

The inventive installation tools are adapted to a wire thread insert comprising a cylindrical coil with a plurality of helically wound windings of a wire and a driving tang with a moving notch protruding into an interior of the coil via a bending portion. The installation tool has the following features: a rotatable mounting spindle with a driving end for rotating the installation spindle and a functional end for installing the wire thread insert, wherein the functional end comprises at least one turn that is length-reduced in the circumferential direction and that has, at a first end, a driving edge for engagement into a moving notch of the wire thread insert and, at a second end, a bend-up-shoulder for bending the driving tang of the wire thread insert radially outwardly.

A wire thread insert comprises besides a cylindrical helix consisting of a plurality of coils a moving tang projecting into the interior of the helix for installing the wire thread insert into a receiving thread. The wire thread insert is connected to the cylindrical helix via a bending portion such that the moving tang can be redressed into the receiving thread after installation of the wire thread insert. The wire thread insert is installed by means of an installation tool with a mounting spindle, which installs the wire thread insert in the receiving thread via a moving shoulder and the moving tang. A compression blade provided at the mounting spindle bends the moving tang back into the receiving thread while the mounting spindle is removed from the installed wire thread insert.

A drive element is described for transmitting a torque to a threaded insert sleeve. A holder has a drive profile in which along a longitudinal axis of the drive element a drive tool for transmitting a torque from the drive tool to the drive element can be received. The longitudinal axis passes through the center of the drive profile and corresponds to a rotation axis of the drive element about which the drive element rotates when transmitting the torque from the drive tool to the drive element. An axial connecting section has an outer surface for forming a connection to the threaded insert sleeve that is one or more of a materially bonded, form-fitting and force-fitting connection. Via the outer surface, when a connection to a threaded insert sleeve is formed, a torque can be transmitted from the drive element to the threaded insert sleeve.

A tool for inserting or removing a tang-free wire thread insert is described, the entraining blade of which is manually fastenable and replaceable within the axial recess of the spindle body by means of a latching connection. In addition to the secure removal of wire thread inserts, this tool construction also ensures a quick replacement of worn entraining blades of the tool. Furthermore, a production method for such a tool is described.

The disclosure relates to a tool for inserting or removing a wire thread insert. The spindle body inserted in the tool has a radial recess, through which an engaging end of the installation blade engages a wire thread insert. The radial recess has a curvilinear circumferential contour or at least one relief notch, which serve for mechanical tension relief in the spindle body.

A hollow-cylindrical preloading cartridge of an installation tool of a wire thread insert has a mandrel channel extending within the preloading cartridge, in which an assembly mandrel with an installation end and a drive end is guided in an inner mandrel guiding thread. The cartridge has an outer wall which encompasses the mandrel channel at least partly with a radial positioning window adjacent to a first axial end of the preloading cartridge facing away from the drive end of the assembly mandrel, through which a wire thread insert is positionable on the assembly mandrel. At least one first tactile detection unit projects beyond a ring-like front side of the cartridge on the first axial end and is offsetable parallel to a longitudinal axis of the cartridge, wherein an axial offset of the at least one tactile detection unit can be detected with a first detection sensor of the cartridge.