A connecting method includes: measuring at least one of control dimensions that influence a dimension of a member obtained by connection of a first member and a second member to each other, the second member including a connection insertion portion where the first member is inserted; determining, according to the at least one of the control dimensions, a relative position for positioning the first member and the second member by insertion of the first member in the connection insertion portion; heating the second member to a first temperature; inserting the first member in the connection insertion portion to place the first member and the second member in the relative position; and stopping the heating of the second member and maintaining the first member and the second member in the relative position.

A device for heating adapters for mounting tools for use in machine tools. The device comprises a base part in which an adapter for inserting or removing a tool is arranged such that the insertion direction of the tool extends towards the base part. The device also comprises a heating part designed for heating the adapter arranged in the base part, the base part and the heating part being displaceable relative to one another in the insertion direction of the tool. The base part comprises a mounting device for retaining the adapter in a fixed manner on the base part during heating. The adapter and the mounting device are provided with elements for interlocking interaction for retaining the adapter on the base part.

A clamping chuck for clamping tools having a tool shank includes a sleeve portion which is open at its free end, is preferably composed of electrically conductive material and forms a tool-holding fixture for frictionally locking fixing of the tool shank in a press fit by shrink-fitting. The sleeve portion, preferably over an entire axial length of the tool-holding fixture, includes an inner sleeve and an outer sleeve. The outer sleeve receives the inner sleeve in an operationally ready state, is joined thereto without play, and is preferably also composed of an electrically conductive material.

An apparatus for provisioning, in particular automatically, a complete tool having a toolholder and a tool, in particular a drilling and/or milling tool. The apparatus has a spindle that can be driven in rotation by a driving device. The spindle has a holding device for holding a toolholder. A measuring device, in particular an optical measuring device, measures a complete tool, held on the spindle. A heating device in the region of the spindle heats a shrink-fit chuck of the toolholder held on the spindle. A cooling device, in particular a cooling device associated with the spindle, enables the spindle and/or the complete tool held on the spindle, to be cooled.

Fixtures and methods for induction heating of bored parts are described. The fixtures and methods may be used to counter the effects of convective heat transfer and thereby promote a more uniform temperature distribution around a bore of a bored part being heated. The fixture includes a base including one or more locators engaged with the part and locating the base relative to the part, and an induction heating coil supported by the base. The induction heating coil is disposed inside the bore of the part and is inductively coupled to the part. The induction heating coil is wound about a coil axis which is non-coaxial with a bore axis of the bore of the part during heating of the part.

The induction coil unit for heating a component that is rotationally symmetrical relative to an axis (7), in particular a tool holder (5), comprises a plurality of coils (19) arranged about the axis (7) of the tool holder (5) with pole elements, which are movable radially with respect to the axis (7), which are connected to one another by a common yoke ring (17). Upon excitation of the coils (19) with alternating current, the latter produce a magnetic flux running in the peripheral direction in the tool holder (5) for the inductive heating of the tool holder (5). The induction coil unit (1) can be moved in an oscillating manner by means of a drive (87) in the direction of the axis (7), the pole elements (21) moving in an oscillating manner along the tool holder (5). An induction coil unit of this type is in a position to heat a comparatively large region of the tool holder (5) despite a comparatively small energy requirement and comparatively small dimensions.

A tool holder bearing locking device has a stand and a locking collar mounted on a top of the stand. The locking collar has a main body, a retainer, multiple rollers, and an end cover. The main body has a chamber and multiple concave recesses annularly arranged around the chamber, communicating with the chamber, and connected with each other to form a multi-lobed groove. The retainer is mounted in the chamber and has multiple separating rods and multiple roller containing spaces formed between the separating rods. The rollers are respectively mounted in the roller containing spaces. The end cover is fastened on the top of the main body. The tool holder bearing locking device fastens a tool holder by the rollers.

The invention relates to a method for monitoring the temperature of the sleeve part of a tool holder, which sleeve part is inserted into the induction coil of a contraction device, wherein the instantaneous inductance of the induction coil is measured during the inductive heating and the current supply to the induction coil is influenced if the instantaneous inductance approaches, reaches, or exceeds a specified value.

A shrink-clamping and/or unshrink-unclamping station for tools, for an at least largely automated shrink-clamping and/or unshrink-unclamping of tools into and/or from tool holders includes an induction heating unit and a cooling unit. The cooling unit can in an automated manner be brought into a heat-conductive contact with a tool holder previously heated by the induction heating unit.

A connecting method includes: measuring at least one of control dimensions that influence a dimension of a member obtained by connection of a first member and a second member to each other, the second member including a connection insertion portion where the first member is inserted; determining, according to the at least one of the control dimensions, a relative position for positioning the first member and the second member by insertion of the first member in the connection insertion portion; heating the second member to a first temperature; inserting the first member in the connection insertion portion to place the first member and the second member in the relative position; and stopping the heating of the second member and maintaining the first member and the second member in the relative position.