Abstract: A steady rest for clamping of rod-shaped workpieces, the steady rest including three holding elements, including two outer holding elements adapted to be swivelled about a pin mounted in a housing and a middle holding element adapted to be adjusted axially, and in which coolant or lubricant can be carried to a workpiece by means of ducts in the housing and the middle holding element. The ducts provided in the housing and in the middle holding element, being connected to a cavity and the ducts being connected together by a deformable flexible high-pressure hose. The ducts being connected together by means of the elastically deformable element.

Abstract: A diaphragm chuck (1) with clamping jaws (3) inserted in its chuck body (2) in a driven connection with a diaphragm (4) that can be deformed by an axially adjustable actuator (5) and is provided with clamping jaws (3) with contact pieces (22), in which counterweights (8) assigned to the clamping jaws (3) are inserted into recesses (7) of the chuck body (2) and the clamping jaws (3) can be clamped against the diaphragm (4) by means of quick-clamping devices (31) engaging in the contact pieces. The contact pieces (22) are each provided with an intermediate element (101) in the area between the clamping jaws (3) and the quick-clamping devices (31) by means of which the flexural moments and/or rotational torques created by the quick-clamping device (31) can be eliminated and it is possible to transmit exclusively axially vectored tensile forces onto the clamping jaws (3).

Abstract: A diaphragm chuck assembly having clamping jaws disposed in a chuck body and in driven connection with a diaphragm deformable by an axially adjustable actuator, the clamping jaws having contact pieces, in which counterweights are disposed in recesses of the chuck body and the clamping jaws are clamped against the diaphragm by means of quick-clamping devices engaging in the contact pieces, the contact pieces being arranged in the diaphragm and in the counterweights with radial play. The clamping jaws are supported against a first surface extending axially in parallel to the chuck body in the clamping position and against a second reference surface extending at right angles to the first reference surface and into the diaphragm. The clamping jaws can be changed in a short time and the clamping jaws can be replaced without having to be reground.

Abstract: In a steady rest (1) with three holding elements (5, 6, 7), of which the two outer holding elements (6, 7) can be swivelled about articulated pins (8, 9) mounted in a housing (2) and the middle holding element (5) can be adjusted in a straight line, with one chip protection cap (11, 12) each provided with outlet ducts attached to one or both outer holding elements (6, 7) and with the possibility of supplying cooling or rinsing agent in a controlled fashion via ducts (13, 15) worked into the holding elements (6, 7) for application to the workpiece (10), each of the ducts (13, 15) provided in the outer holding elements (6, 7) is directly connected to a duct (27) running in the housing (2) of the steady rest (1) via kidney-shaped openings (21, 22) running concentrically to the articulated pins (8, 9).

Abstract: In a steady rest (1) with three holding elements (5, 6, 7), of which the two outer holding elements (6, 7) can be swiveled about articulated pins (8, 9) mounted in a housing (2) and the middle holding element (5) can be adjusted in a straight line, with one chip protection cap (11, 12) each provided with outlet ducts attached to one or both outer holding elements (6, 7) and with the possibility of supplying cooling or rinsing agent in a controlled fashion via ducts (13, 15) worked into the holding elements (6, 7) for application to the workpiece (10), each of the ducts (13, 15) provided in the outer holding elements (6, 7) is directly connected to a duct (27) running in the housing (2) of the steady rest (1) via kidney-shaped openings (21, 22) running concentrically to the articulated pins (8, 9). This embodiment makes it possible to carry the coolant or lubricant into the outer holding elements (6, 7) without difficulties.

Abstract: In a steady rest (1) for central clamping of rod-shaped workpieces (20) by means of three holding elements (4 or 7), of which the outer holding elements (7) can be swivelled about an articulated pin (8) mounted in a housing (2) and the middle holding element (4) can be adjusted in a straight line, in which coolant or lubricant can be carried to the workpiece (20) by means of ducts (23) worked into the housing (2) and the holding elements, supply of the coolant or lubricant to the middle holding element (4) without leaks is made possible by having a cavity (21) worked into the housing (2) and/or a housing cover (3). In addition, the ducts (22, 23) provided in the housing (2) and/or the housing cover (3) as well as in the middle holding element (4) are connected to the cavity (21) and these ducts (22, 23) are connected together by means of an elastically deformable element (31) that can be configured as a flexible high-pressure hose (32).

Abstract: In an diaphragm chuck (1) with clamping jaws (3) inserted in its chuck body (2) that are in a driven connection with a diaphragm (4) that can be deformed by an axially adjustable actuator (5) and is provided with clamping jaws (3) with contact pieces (22), in which counterweights (8) assigned to the clamping jaws (3) are inserted into recesses (7) of the chuck body (2) and the clamping jaws (3) can be clamped against the diaphragm (4) by means of quick-clamping devices (31) engaging in the contact pieces (22), the clamping jaws (3) being supported directly against a first reference surface (23) running axially in parallel to the chuck body (2) in the clamping position and against a second reference surface (24) running at right angles to the first reference surface (23) and worked onto the diaphragm (4), the contact pieces (22) are each provided with an intermediate element (101), for example in the form of a ball joint (102), in the area between the clamping jaws (3) and the quick-clamping devices (31) by me

Abstract: A diaphragm chuck assembly having clamping jaws disposed in a chuck body and in driven connection with a diaphragm deformable by an axially adjustable actuator, the clamping jaws having contact pieces, in which counterweights are disposed in recesses of the chuck body and the clamping jaws are clamped against the diaphragm by means of quick-clamping devices engaging the contact pieces, the contact pieces being arranged in the diaphragm and in the counterweights with radial play. The clamping jaws are supported against a first surface extending axially in parallel to the chuck body in the clamping position and against a second reference surface extending at right angles to the first reference surface and into the diaphragm. The clamping jaws can be changed in a short time and the clamping jaws can be replaced without having to be reground.

Abstract: In a clamping insert (11) for clamping jaws (4) comprising a base element (12) that can be inserted in a recess (6) worked into the clamping jaw (4) and that can be connected with a releasable connection, with clamping teeth (14) formed onto the clamping insert (11), the base element (12) is supported in the recess (6) so that it cannot rotate and has a contact surface on the end surface facing the workpiece (10) to be clamped that is provided with one or more clamping teeth (14), the contact surface being offset in relation to the clamping teeth (14) and formed as a stop (15). By means of this embodiment, it is possible not only to make the clamping insert (11) easy to assemble and to achieve a long service life for the clamping teeth (14), but also above all to make the penetration depth of the clamping teeth (14) into the workpiece (10) predefined and adapted to the particular application.

Abstract: In a power-operated chuck (1) with clamping jaws (3) that are guided so they can move radially within a chuck body (2) and are in a drivable connection via intermediate elements with a clamping piston (4) upon which a hydraulic fluid can act in one or both directions and which is inserted in the chuck body (2) in such a way that it can move axially, a pressure sensor (41) installed in the chuck body (2) is provided in order to monitor the hydraulic fluid pressure existing in the pressure chambers (7 and 8) assigned to the clamping piston (4), the pressure sensor (41) being connected to one or both pressure chambers (7, 8) via hydraulic fluid channels (42, 43). Furthermore, the pressure sensor (41) has a receiver assigned to it which is connected to a unit (45) for evaluating the signals received from the pressure sensor (41).

Abstract: In a chuck (1) with moveable base jaws (11) inserted in radial grooves (3) in a chuck body (2) with each base jaw (11) having a releasable top jaw (21) attached to it, a joining piece (12) protruding towards the top jaw (21) is formed onto each base jaw (11) and engages in an accommodation opening (22) in the top jaw (21). Furthermore, the top jaws (21) can be clamped onto the base jaws by means of quick clamping devices (31) arranged in the top jaws (21) and the joining pieces (12). This embodiment means that the top jaws (21) of the chuck (1) can be replaced very quickly and in a simple operation, whilst a secure attachment of the top jaws (21) onto the base jaws (11) is guaranteed at all times.

Abstract: In a diaphragm chuck (3) with clamping jaws (3) which are in a drivable connection with a deformable diaphragm (4) by means of jaw carriers (6) and in which counterweights (8) allocated to the clamping jaws (3) are inserted in the chuck body (2), the clamping jaws (3) are provided with axially aligned joining pieces (23) which are held in the counterweights (8). The clamping jaws (3) can be clamped together with the jaw carriers (4) and the diaphragm as well as with the counterweights (8) by means of quick clamping devices (31) which engage in the joining pieces (23).This embodiment achieves a situation in which the clamping jaws (3) can be changed rapidly and in a straightforward procedure by releasing the quick clamping devices (31) by means of a tool which can be inserted radially from the outside into the chuck body (2).