In a steady rest (1) for centring a rotationally symmetrical workpiece (2) in relation to a longitudinal axis of a processing machine, consisting of, two housing shells (4, 5) arranged at a distance from one another and firmly connected together, an actuating piston (7) mounted in an axially moving arrangement in the housing shells (4, 5) for generating a clamping force (3) which acts on the workpiece (2), with three steady rest arms (8, 9, 10) in a driving connection with the actuating piston (7) mounted in the two housing shells (4, 5), by means of which the workpiece (2) is clamped at three positions spaced apart, in which case the two outer steady rest arms (8, 9) are held in a swiveling arrangement on the housing shells (4, 5) about a bearing pin (11),
the clamping forces actually occurring on the steady rest arms (8, 9, 10) should be registered reliably.

This is achieved in that a force measuring device (21) is provided on at least one of the two outer steady rest arms (8, 9), by means of which the clamping force (3) of the particular outer steady rest arm (8, 9) is registered during the clamped condition and passed onto an evaluation device (22).

A method of monitoring a tool clamping device mounted on a machine spindle, the clamping force of which tool clamping device is generated by a spring assembly which exerts a force in the direction of the clamping position on an actuating element actuating the clamping or the release of a tool or tool holder. In the method, the spring force and the displacement of the actuating element are continuously measured during the release and/or clamping of a tool or tool holder and recorded as functions of the time. These recorded functions are used to identify at least one parameter characteristic for the status of the tool clamping device. Based on the spring force and the displacement over time, a spring characteristic curve is plotted in the form of the spring force as a function of displacement, the analysis of which spring characteristic curve provides information about a number of characteristic parameters.

An intelligent production line for turning tool bit cavities and an application method are provided, which solve the problem that a production line in the prior art has low working efficiency. The intelligent production line has the beneficial effects of a compact arrangement structure, higher safety and improved working efficiency. The intelligent production line for turning tool bit cavities includes a robot. Material tables and at least one machining center are arranged around the robot. A transfer station used for transferring materials is arranged between the machining center and the robot. A protective fence is arranged between a position above the material tables and the robot, and between the transfer station and the robot. The robot is provided with a mechanical arm including a base plate. The base plate is provided with at least one clamping jaw and fixed with a laser detecting unit for detecting the materials.

A clamping chuck is provided for clamping palettes having a clamping spigot. The clamping chuck includes a receiving opening for the clamping spigot and a clamping device that includes an actuating piston displaceable between an initial position and a locking position for actuating clamping members for clamping the clamping spigot in the receiving opening. The clamping chuck includes a monitoring line that is acted upon pneumatically and leads from an inlet to an outlet. The receiving opening includes a conical insertion region, into which at least one control hole connected to the monitoring line emerges, the control hole being closed by the clamping spigot. A valve device is arranged between the inlet and the outlet of the monitoring line to vary the flow of a fluid through the monitoring line depending on the position of the actuating piston.

A main spindle device includes: a main spindle; a rod accommodated in the main spindle, the rod being capable of moving to an unclamp position in a direction toward the first end, and when the main spindle is holding a tool, being capable of moving to a clamp position in a direction toward a second end; a biasing unit that biases the rod in the direction toward the second end with respect to the main spindle and that biases the rod to the clamp position when a collet is holding the tool; and a biasing force detector that detects a biasing force of the biasing unit which biases the rod in the direction toward the second end after the rod is moved in the direction toward the first end with respect to the main spindle to the unclamp position by force larger than the biasing force of the biasing unit.

A precision locating fastening device for securing a part. The device includes a drive screw, a base member, and a stop member. The drive screw has a gripping surface. The base member houses the drive screw and has a precision locating surface. The part is retained and located adjacent the precision locating surface relative to a fixture plate. The drive screw has one or more keyed ends. The stop member is replaceable to maintain precision and accuracy while locating and retaining the part. The device is incorporated in a system where a first keyed end of a first fastening device, a second key of the first fastening device, or the keyed end of a drive screw of a second fastening device is adjusted from either the first side of the fixture plate, the second side of fixture plate, or both to retain and locate the part on the fixture plate.

A manufacturing fixture process, and associated device for practicing the disclosed process, includes supporting a component during manufacturing by at least one rest pad, and sensing and transmitting a force signal exerted on the rest pad by the component during manufacturing by at least one sensor associated with the at least one rest pad. The process further includes clamping the component onto the rest pad by a clamping component configured to rigidly hold the component, receiving and monitoring the force exerted on the rest pad by a force monitoring system configured to receive and monitor the signal indicating the force exerted on the rest pad, as well as determine whether the force exerted on the rest pad is within a predetermined range, exceeds the predetermined range, and/or is below the predetermined range, and outputting the force exerted on the rest pad with an output device.

The invention relates to a monitoring arrangement (12) for monitoring the clamping quality of a workpiece carrier clamped in a clamping device (3, 40, 49) as well as a clamping system with clamping device (3, 40, 49) and such a monitoring arrangement (12). The monitoring arrangement comprises at least two sensors (A1-A4) for the independent detection of the clamping quality of a clamped workpiece carrier or workpiece. The monitoring arrangement also comprises a transmitting device (14) and a receiving device (21), wherein the transmitting device (14) is constituted such that it transmits the determined or calculated parameter or parameters redundantly to the receiving device (21).

A method for adjusting an inlet guide of a peeling machine controls a peeling material using the inlet guide in relation to a peeling head carrying peeling tools in such a way that the volume per unit length of the peeling material, which volume is to be machined by the peeling machine, is minimized while producing a bright steel having excellent surface quality. Furthermore, a peeling machine provides appropriate measuring equipment in order to be able to carry out the method described above.

A method for determining the clamping force of a force-actuated, rotationally drivable clamping device of a machine tool. An object is clamped with an actuation force F. Model-based calculation of the clamping force F.sub.calc to be expected is performed based on the actuation force F and the operating parameters of the machine tool in a control unit of the machine tool. Performing clocked measurement of the clamping force F.sub.real acting upon the object in the clamping device within the time span of a measurement interval I. Wireless transming the measured value F.sub.real to the control unit of the machine tool, and comparison of the measured value F.sub.real with the calculated clamping force F.sub.calc. The measurement interval is adapted if the comparison reveals a deviation which reaches a threshold value.