A machine tool for processing workpieces comprises a stroke drive device with a pressing tool, with a motorized drive including two motorized drive units which are controlled independently and wedge gear elements between the motorized drive and the pressing tool. The wedge gear elements comprise two drive-side wedge gear elements, each one being associated with a motorized drive unit, and two output-side wedge gear elements attached to the pressing tool, with each output-side wedge gear element opposite to an associated respective drive-side wedge gear element and forming a gear element pair. The wedge gear elements of each gear element pair are opposite each other inclined at a wedge angle with respect to a positioning axis and inclined in opposing directions with respect to the positioning axis. The motorized drive is configured to move the pressing tool along a stroke axis and position the stroke drive device along the positioning axis.

A machine tool for processing workpieces comprises a stroke drive device with a pressing tool, with a motorized drive including two motorized drive units which are controlled independently and wedge gear elements between the motorized drive and the pressing tool. The wedge gear elements comprise two drive-side wedge gear elements, each one being associated with a motorized drive unit, and two output-side wedge gear elements attached to the pressing tool, with each output-side wedge gear element opposite to an associated respective drive-side wedge gear element and forming a gear element pair. The wedge gear elements of each gear element pair are opposite each other inclined at a wedge angle with respect to a positioning axis and inclined in opposing directions with respect to the positioning axis. The motorized drive is configured to move the pressing tool along a stroke axis and position the stroke drive device along the positioning axis.

The invention relates to an apparatus and method for stripping away/pushing out a punched grid/internally formed part and ejecting a blanked part in a precision blanking press.

The object of the invention is to provide an apparatus and a method for stripping/pushing out a punched grid and for ejecting a blanked part from a die in a precision blanking press, wherein the force of stripping/pushing out and ejection can be adjusted independent of the knife-edged ring force and the counterstay force while reducing the mass of the knife-edged ring and counterstay pistons, increasing the stripping/pushing and ejection speeds, and at the same time simplifying the hydraulic circuit.

This is achieved by providing that the knife-edged ring piston (38) and a stripping/pushing piston (30) form a separate constructive unit and that the counterstay piston (64) and an ejecting piston (65) form a separate constructive unit in the top and the base (16, 53), respectively, with pressure chambers (31a, 31b; 68) that are independent of one another for the stripping/pushing piston (30) on the one hand and for the ejecting piston (65) on the other, wherein the pressure chambers (31a, 31b; 68) of the stripping/pushing piston (30) and the ejecting piston (65) are in mutual connection by way of a first controllable hydraulic circuit (92) of the hydraulic system (34), and wherein the pressure chambers (40; 69) of the knife-edged ring piston (38) and the counterstay piston (64) are in mutual connection by way of a second controllable hydraulic circuit (93).

A drive system for a machine tool comprises two, at least equally long drive spindles, extending parallel to each other and being structurally identical with regard to their torsional rigidity and their axial rigidity, which are each supported to rotate about a spindle axis, and which can be driven about the spindle axis concerned. Each of the drive spindles has a fixed bearing at one end, acting in its longitudinal direction. Spindle nuts, which are seated on the drive spindles can be moved simultaneously with longitudinal movements in the longitudinal direction of the drive spindles.

Provided is an electrode notching mold for a secondary battery having an auto-balance unit. The electrode notching mold for the secondary battery having the auto-balance unit includes a cover portion including an upper plate and a lower plate, a mold portion having a film, a plurality of ascending-descending portions, a plurality of guide portions, and a pressing portion, and also, a plurality of auto-balance units connected to a spherical bearing on the central axis is coupled to an upper body and a lower body and performs a function of alleviating vibration.