Abstract: A double-spindle machine tool comprises two tool-holder spindles and two work holding fixtures allocated thereto. A work holding fixture comprises a work carrier plate which supports itself on an adjustable abutment. This abutment is adjusted by means of an adjusting device in dependence on changes in the distance of the axes of rotation of the tool-holder spindles.

Abstract: A work treatment installation comprises several side-by-side machine tools and at least one work supply and discharge device. It further comprises a work transport device which bridges both of them and comprises a displaceable and vertically sliding lifting skid with a work grab. The work transport device comprises lowering stops for the lifting skid. They are fixed between charge and discharge positions of the machine tools and designed for engagement and disengagement in the charge and discharge positions.

Abstract: A manufacturing plant comprises at least one conveyor for conveying works and at least one processing machine. In front of a processing machine, provision is made for a delivery device which comprises a rotary table on which at least one pivoted work grab is disposed. A pivoting drive is disposed on the rotary table, acting of the work grab for pivoting the work grab between a downward position of delivery and removal and an upward conveying position.

Abstract: A production installation comprises a loading transport means with a transport rail connecting processing machines. It also comprises workpiece grippers for supplying the processing machines with workpieces to be processed and for removing processed workpieces from the processing machines. The workpiece grippers can be pivoted about only one pivot axis between a lowered transfer position and a pivoted-up transport position. The processing machines also comprise a workpiece carriage which can be displaced transversely with respect to the direction of the transport rail for transport between the workpiece gripper and processing position on the processing machine.

Abstract: In the method, a tool is tested for an aligning fit or an imbalance in a tool spindle. The tool spindle is set into rotation. A light beam is used to check whether the tool wobbles. The tool spindle and the light beam are moved relative to one another until the light beam impinges on the area covered by the wobbling movement and a received signal generated from the light beam has an intermittent signal path for the first time. The then prevailing relative position between the tool spindle and the light beam is evaluated in respect of a non-aligning fit of the tool or in respect of a tool imbalance.

Abstract: A transfer line for transporting workpieces from a first workstation to an adjacent second workstation comprises a frame with a depositing place for at least one workpiece. It further comprises a transporting beam, each end area of which having respective work supports. The transporting beam is supported for height adjustment between two positions of lifting such that the work supports are located above or below the depositing place. The transporting beam is further designed for longitudinal displacement between positions of transfer for the work supports to coincide horizontally with the depositing place.

Abstract: A loading device for transporting workpieces (3) from a readiness position, preferably a workpiece transport means, to a machining unit (1) and vice versa, or between machining units, is provided with a loading portal arranged above the machining site, on which linear robots (5, 6), bent-arm robots or similar means are arranged displaceably for transporting and releasing or picking up the workpieces (3) at or from the machining unit (1). One or more tray-like catching means (7) arranged under the workpieces (3) are also arranged displaceably at the loading portal (4, 10) with the displaceable means (5, 6).

Abstract: A machine tool for at least triaxially machining work pieces (15) comprises a work spindle (10) and a working area (14) before the work spindle (10). A z skid (23), which is displaceable in the direction of the spindle (10), is disposed above the working area (14), with a work holding fixture (29) being joined to, and suspended downwards from, the z skid (23).

Abstract: An installation for machining work pieces (15) comprises at least a machine tool (36). It is provided with a supply and take-down equipment (41), which is disposed before the machine tool (36) on a side of the working area (14) that faces away from the work spindle (10).