A machining fixture, comprising a base, an air cylinder, an air cylinder piston and connecting rod, a supporting guide sleeve, a sliding supporting seat, a thrust ball bearing holder and spherical bead, a floating platform, a first connecting screw, a compression block, a pin shaft, a push rod pin, a second connecting screw, a center positioning shaft, a third connecting screw, a guide sleeve, a supporting plate, an oil cylinder piston and connecting rod and a one-way oil cylinder. The floating centering self-clamping machining fixture is for machining flange-type, which improves positioning accuracy and machining precision. The fixture has an automatic returning floating platform, achieving the automatic alignment of the parts; after the alignment, a floating support moves down and is changed to a rigid support, improving stability; and a positioning rod continues to move down, such that a workpiece is automatically clamped by an ejector rod oscillating arm mechanism.

A device for holding tools for machine tools, includes at least one interchangeable holder and one base holder. Each interchangeable holder includes two interchangeable-holder guiding elements which are engaged with base-holder guiding elements of the base holder. Furthermore, each interchangeable holder comprises an interchangeable-holder coolant channel comprising an interchangeable-holder coolant-channel opening in one of the interchangeable-holder guiding elements, which comes into contact with a base-holder coolant-channel opening of a base-holder coolant channel, which is arranged on a base-holder guiding element. First guiding elementseither the interchangeable-holder guiding elements or the base-holder guiding elementshave a convex semicircular cross-section. The cross-section has a flat area containing the vertex of the semicircle, or it has two widened areas which are arranged in mirror symmetry on the semicircle. The guiding elements that engage with the first guiding elements have a concave circular-sector-type cross-section with a central angle of less than 180.

A machine tool is equipped with a second supply pipe having elasticity and having one end side fixed to a spindle head and the other end side fixed to an arm portion, a cover provided within a machining area, and rollers. When the spindle head is moved in a direction to come close to the arm portion, the second supply pipe is bent and then a portion of the second supply pipe is brought into abutment against the cover. The rollers are provided at a portion of the cover against which the second supply pipe is brought into abutment, and are configured to reduce friction between the cover and the second supply pipe when the second supply pipe moves relative to the cover in an abutment state against the cover.

A machining tool for chip-removing machining includes a tool body and a generator assembly for harvesting electric energy to be used in the tool. At least one first component is secured to the tool body and a second component is movably connected to the tool body so as to, by moving with respect to the first component through interaction therewith, generate electric energy in the first component. The generator assembly includes an arrangement for conducting a medium flow to hit and act upon the second component for moving it with respect to the first component.

The invention relates to a motor spindle comprising at least one spindle drive which can be supplied with energy and/or operating supplies via at least one feed line. This motor spindle has a fixedly installed first coupling element of a multi-coupling, to the ports of which the feed lines for transmitting energy and/or operating supplies are connected. The invention also relates to a machine tool comprising such a motor spindle, wherein the machine tool has a second coupling element of the multi-coupling. On this second coupling element, the respective complementary ports for transmitting energy and/or operating supplies are arranged.

A machining fixture, comprising a base, an air cylinder, an air cylinder piston and connecting rod, a supporting guide sleeve, a sliding supporting seat, a thrust ball bearing holder and spherical bead, a floating platform, a first connecting screw, a compression block, a pin shaft, a push rod pin, a second connecting screw, a center positioning shaft, a third connecting screw, a guide sleeve, a supporting plate, an oil cylinder piston and connecting rod and a one-way oil cylinder. The floating centering self-clamping machining fixture is for machining flange-type, which improves positioning accuracy and machining precision. The fixture has an automatic returning floating platform, achieving the automatic alignment of the parts; after the alignment, a floating support moves down and is changed to a rigid support, improving stability; and a positioning rod continues to move down, such that a workpiece is automatically clamped by an ejector rod oscillating arm mechanism.

A clamping device includes a zero-point clamping system, which can be actuated by a working medium; a machine vice, which can be coupled to the system; and a gripping and positioning device for transporting and positioning the machine vice on the zero-point clamping system. The zero-point clamping system contains at least one coupling element and the gripping and positioning device contains a docking device having at least one docking element, which can be coupled to the coupling element, for supplying the working medium to the system. To facilitate coupling, the at least one coupling element of the system is offset parallel to a receiving opening for a clamping element on the machine vice, and the at least one docking element is positioned in such a way that it is coupled to the coupling element by retraction of the clamping element located on the machine vice into the receiving opening.

This cutting machine is provided with an air supply mechanism. The air supply mechanism feeds air into the interior of a jig from a support block. The air supply mechanism comprises: an air supply flow passage provided to the support block; an air flow passage provided to the jig; and a switching valve provided to the air flow passage. Before the switching valve is opened during a process of an operation for connecting the jig and the support block, a discharge passage is brought into communication with a space enclosed by a first reference seat of the jig, a connection part of the support block, and the switching valve.

A system for supporting workpieces during machining. The system comprises one or more adjustable workpiece support assemblies and a robotic unit. Each workpiece support assembly comprises a pedestal and a rotatable fixture element. The robotic assembly comprises a hydraulic means of mobilizing and immobilizing each support assembly, so that the workpiece may be supported by an array of workpiece supports in a particular orientation. The robotic unit moves along a frame, and manipulates and fixes the position of the fixture elements to match the contour of a workpiece. An umbilical contains hydraulic lines which pair with hydraulic lines within the workpiece support, and hydraulic pressure to particular lines allows the release of clamps within the workpiece support.

Utilities supplied through a first utility path of a turning tool holder via a docking device is supplied to a second utility path of an adjacent rotating tool holder through a communication arrangement, there is no need to provide a complex hydraulic line, a pneumatic line and a coupler for receiving the utilities from the docking device at a rearward side of the rotating tool holder. A rearward size of the rotating tool holder may be minimized, so that even when the rotating tool holder is mounted on the turret, no interference occurs with the docking device in the rearward direction when the turret rotates. As a result, it is possible to use the rotating tool holder, to which utilities supply is necessary, even in the turret which is provide with the docking device.