A complex machine tool for cylindrical workpieces has a bed, a headstock assembly, at least one supporting assembly, and at least one machining assembly. The bed has three tracks being respectively a first track, a second track, a third track arranged in order. Each one of the three tracks defines a respective guiding direction, and the three guiding directions of the three tracks are mutually parallel. The headstock assembly is connected to the bed, and is located near one of two ends of the second track. The at least one supporting assembly is mounted on one of the three tracks and is used for supporting the cylindrical workpiece. The at least one machining assembly is mounted on one of the three tracks, is slidable along the track, and is located on a position at a spaced interval from the at least one supporting assembly.

A complex machine tool for cylindrical workpieces has a bed, a headstock assembly, at least one supporting assembly, and at least one machining assembly. The bed has three tracks being respectively a first track, a second track, a third track arranged in order. Each one of the three tracks defines a respective guiding direction, and the three guiding directions of the three tracks are mutually parallel. The headstock assembly is connected to the bed, and is located near one of two ends of the second track. The at least one supporting assembly is mounted on one of the three tracks and is used for supporting the cylindrical workpiece. The at least one machining assembly is mounted on one of the three tracks, is slidable along the track, and is located on a position at a spaced interval from the at least one supporting assembly.

Centering apparatuses and methods for precision placement of a product or component, such as a ceramic honeycomb body, prior to a post-production processing steps are provided. In particular, after extrusion of a component or ware, the component or ware oftentimes requires one or more post-production processing steps in order to obtain a final product. The centering apparatuses and methods described herein provide for the precise and accurate centering of the product (or component) prior to performing these post-production processing steps, thereby obtaining repeatable, consistent, high-quality final products.

Apparatus (101) for supporting a workpiece (201), comprising a frame structure (102) for holding a workpiece (201), a base element (103) for supporting the frame structure (102), and a tool support element (110) for holding a tool. The frame structure (102) comprises lower and upper frame elements (107, 108) between which a workpiece (201) is receivable, and the upper frame element (108) is movable with respect to the lower frame element (107) in a Z-axis direction (106), for clamping a workpiece (102) therebetween. The tool support element (110) is movable with respect to the upper frame element (108) in an X-axis direction (104). The frame structure (102) is movable with respect to the base element (103), and with respect to a workpiece held between the lower and upper frame elements (107, 108), in a Y-axis direction (105). A CNC machine comprising the apparatus (101).

The present invention relates to a measuring steady rest which has a device for supporting central workpiece regions, in particular, bearing points on shaft parts, in particular crankshafts, and a measurement device integrated therein for directly adjusting the measurement of the workpiece regions before and/or during machining of the shaft parts. The measuring steady rest is preferably designed in the form of a prism, the measurement device being arranged on the bottom of the prism between the lateral flanks of the prism. The present invention further relates to a grinding machine comprising such a measuring steady rest, and to a method for supporting and measuring central workpiece regions on such a grinding machine comprising such a measuring steady rest.

The present invention relates to a measuring steady rest which has a device for supporting central workpiece regions, in particular, bearing points on shaft parts, in particular crankshafts, and a measurement device integrated therein for directly adjusting the measurement of the workpiece regions before and/or during machining of the shaft parts. The measuring steady rest is preferably designed in the form of a prism, the measurement device being arranged on the bottom of the prism between the lateral flanks of the prism. The present invention further relates to a grinding machine comprising such a measuring steady rest, and to a method for supporting and measuring central workpiece regions on such a grinding machine comprising such a measuring steady rest.

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).

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 machine tool that machines a workpiece by a tool includes a workpiece spindle device that holds the workpiece in a rotatable manner with a predefined workpiece rotational axis Rw as a center, one or more in-machine robots, and a connecting mechanism that attaches the one or more robots on the machine tool so that the one or more robots move independently from the workpiece, with the workpiece rotational axis Rw serving as a center.

A spindle phase indexing device for a machine tool is equipped with a guide rail detachably or fixedly attached to a table, a phase indexing jig configured to travel on the guide rail and which includes a first fitting part, a cutting tool including a second fitting part configured to be fitted with the first fitting part, and a controller configured to store therein a phase of a spindle at a point in time when the first fitting part and the second fitting part are fitted together. The first fitting part and the second fitting part are formed such that rotation of the cutting tool is constrained when the first fitting part and the second fitting part are fitted together.