A portable meter (1) for measuring a force generated by a magnetic apparatus (2), comprising a mobile probe (3) configured to be coupled to the magnetic apparatus (2) whose force needs to be measured, the probe (3) comprising at least one active ferromagnetic element (4) which has a configuration corresponding to that of a pole (N, S) on the magnetic apparatus whose force needs to be measured, the probe being equipped with alignment means (5, 6) configured to align the at least one active ferromagnetic element (4) with at least one magnetic pole (N, S) on the magnetic apparatus (2), the at least one active ferromagnetic element (4) having at least one turn (B)—made of an electrically conductive material—wound around it, and a detection unit (7) interfaced with the at least one turn (B) in order to detect a magnetic flux flowing through the coil at least during a transient of activation/deactivation of the magnetic apparatus.

The invention relates to a device for monitoring the contact of a workpiece (1) or tool on a spindle (2) of a machine tool, which device has a contact surface (3) for the workpiece (1) or tool. At least one measurement nozzle (4) is arranged in the region of the contact surface in order to produce a fluid flow directed away from the contact surface (3). Upstream of the measurement nozzle, the fluid flow is conducted through a vacuum nozzle, which can comprise a jet nozzle (7c) and a collector nozzle (7b). When the fluid medium flows through the vacuum nozzle, the vacuum nozzle produces a negative pressure in a negative pressure chamber (9c). A pressure sensor (6) or pressure switch senses a measurement pressure (p3) in the negative pressure chamber.

An automated tool clamping device, in particular a fully automated tool clamping device is configured for a clamping-in of at least one tool in a tool chuck by a tightening of a union nut of the tool chuck and/or for a declamping of the tool out of the tool chuck by a release of the union nut, and comprises a clamp element, which is at least configured to generate a connection, in particular a clamp connection, with the union nut of the tool chuck, and comprises a torque receiving element, which is at least configured to receive at least a large portion of a torque occurring during a tool clamping process, in particular during a tool clamping-in process and/or a tool declamping process.

A process for operating a virtual sensor for determining the condition of a tool holder on a tool machine, such as a spindle, and the condition of a tool machine which has at least one tool holder and at least one tool, attached or attachable to the tool holder, which allows a workpiece to be processed by running a machine program, and which has at least one control unit comprising at least one sensor.

A multi-station turning tool includes a lower bottom plate mechanism. A first hydraulic pipeline arranged in hydraulic fluid to an upper and an end face clamping hydraulic cylinders; a supporting plate mechanism internally provided with an air-detection pipeline; a positioning mechanism includes a substrate and a plurality of supporting blocks; an upper clamping mechanism includes a V-shaped clamping block connected to an upper clamping big arm that's connected to the upper clamping hydraulic cylinder; an end face clamping mechanism includes an end face clamping block that's connected to an end face clamping big arm that's connected to the end face clamping hydraulic cylinder through a piston ejector rod; an end face clamping air-detection mechanism includes an air pressure detection component, connected to a controller, and is capable of detecting a pressure of the air-detection pipeline to identify working states of the positioning mechanism and the upper clamping mechanisms.

A gripping device is provided in a turret-type tool magazine of a machine tool and grips a tool or a tool holder that holds the tool. The gripping device includes: a pair of arms configured to grip the tool or the tool holder by pinching the tool or the tool holder between the arms, a main body part configured to support the pair of arms so that each of the paired arms swings in the pinching directions to pinch the tool or the tool holder between the arms; and an angle detector configured to detect a physical quantity indicating a swing angle of the arm.

System for measuring misalignment of a tool (2) in a press device (1), the tool (2) comprises at least a first part (3) and a second part (4), which are movable relative to another in a guided manner by means of guide means comprising at least a guide pillar (10) provided in the first part (3) which is led in a guide bush (12) provided in the second part (4), wherein the system comprises measuring means (20) provided to detect misalignment of the tool (2). According to the invention, the measuring means (20) are mounted directly at the guide means.

A rotating tool is held in a tool holder. The tool holder includes a male tapered portion. The tool holder is rotated by a rotating-tool main shaft. The rotating-tool main shaft includes a hollow main shaft. The hollow main shaft includes a circular conical hole formed in a tip and corresponding to the male tapered portion. The hollow main shaft includes a fluid passage to detect that the male tapered portion is properly attached to the circular conical hole, and an opening to blow out a fluid. The opening is provided in a portion offset from the circular conical hole.

There is proposed a method for examining the clamping state of a tool holder or tool which is clamped in a tool clamping device of a rotor unit of a motor-driven machine tool unit, with the spacing of the sensor head from a component of the rotor unit being measured, with a recording of at least one time and/or position-related sequence of the spacing values measured with the sensor head, wherein for improved integration of the method the recording of a first and a second time and/or position-related sequence is carried out during an acceleration of the rotation of the rotor unit with respect to the stator unit, in particular when the rotor unit is started up, wherein the time and/or position-related information of the sequence vectors of the first and/or second sequence is scaled using the respective associated current speed (v.sub.0).

A high-precision tensioning device is provided. The high-precision tensioning device is composed of a stepping motor, an encoder, a harmonic reducer, a rotary table, connecting rods, contacts, force sensors, a rotary table connecting piece, a gasket, a nut, bolts, a set screw, a shell and an end cover. The tensioning device provided by the disclosure can achieve closed-loop control on a tensioning force in order to improve the tensioning precision of the tensioning device; and as long as machining and assembling errors meet design requirements, stable synchronous tensioning of three contacts can be ensured, and the location precision of a hub is improved.