Method and Apparatus for fabricating a spacer frame for use in an insulating glass unit. One of a multiple number of possible spacer frame materials is chosen for the spacer frame. An elongated strip of the material is moved to a notching station where notches are formed at corner locations. The character of the notches is adjusted based on the selection of the metal strip material and more particularly to achieve bending of the material in an repeatable, straightforward manner. Downstream from the notching station the metal strip is bent into a channel shaped elongated frame member having side walls. Further downstream a leading strip of channel shaped material is severed or separated from succeeding material still passing through the notching and bending station.

A radial press has at least six main jaws arranged concentrically and uniformly about a press axis to be moved radially in the direction of and away from the press axis by a drive unit. Each main jaw has a contact surface radially inwards and mechanical holding means for press jaws that can be attached in an exchangeable manner. A cutting tool is received in a tool installation area delimited outwardly by the main jaws. The cutting tool has multiple cutting attachments, each of which is attached to a main jaw and has a base structure. At least one of the cutting attachments has a cutting structure. Each base structure has a support surface which rests against the contact surface of the paired main jaw and at least one engagement element. The cutting structure protrudes from the paired base structure in the direction of the press axis.

A method for material forming, by means of a movable impact head and tool combination and a drive unit, the method including moving the drive unit to provide kinetic energy to the impact head and tool combination, for the impact head and tool combination to strike a work material, so as to form the work material. A return movement of the movable impact head and tool combination, away from the work material, after the strike of the work material by the impact head and tool combination, is dampened.

A press machine includes at least one actuator and at least one linkage to open and close a ram. Another aspect employs a sheet metal-working punch mounted to the ram. A fluid-powered piston drives a carriage coupled to a linkage in another aspect of the present machine. In still another aspect, at least a majority of an actuator is located externally to an outside surface of a stationary structure within which a ram is located. Yet a further aspect both opens and closes a ram with a unidirection movement of an actuator.

This disclosure relates to methods and apparatuses for punching workpieces. A punching tool is configured to move during a punching stroke along a stroke axis towards a workpiece to be punched. The punching tool is configured to move away from the punched workpiece during a return stroke. The punching tool includes first and second components configured to be coupled hydraulically for concurrent movement along the stroke axis. The punching tool includes a punching drive for moving the first component along the stroke axis. The punching apparatus is configured to move the second component relative to the first component at a first transmission ratio during the punching stroke. The punching apparatus is configured to move the second component relative to the first component at a second transmission ratio in response to a reaction force of the workpiece exceeding a threshold value of the punching drive during the punching stroke.

A hand-held knockout driver includes a main housing having a handle portion, a motor positioned within the main housing, a pump assembly driven by the motor, and a secondary housing coupled to the main housing and defining a bore therein. The hand-held knockout driver also includes a working piston moveable within the bore from a rest position to an actuated position to define a piston throw distance therebetween. The hand-held knockout driver also includes a draw stud coupled to the working piston, a die coupled to the secondary housing, and a punch coupled to the draw stud opposite the working piston for movement therewith relative to the die. The die has a depth greater than the piston throw distance.

A method and apparatus for producing clutch bodies, which are suitable for synchronizer systems and provided with teeth or tooth sections, from a blank uses and includes at least one embossing stage, composed of embossing segments and an anvil, for embossing roofs and troughs between root and tip circles into an upper face of the blank, and transfer means for transporting the blanks, First embossing segments form a first section and second embossing segments form a second section for sequential embossing within the at least one embossing stage, wherein the first embossing segments first emboss a first section, then return in relation to the second embossing segments, and thereafter the second embossing segments emboss the second section, wherein the second embossing segments are disposed next to each other in an annular arrangement, and the second embossing segments are designed to be axially movable relative to the first embossing segments of the first section.

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 a precision blanking press comprising a top, a base and tie rods and columns that connect the top and the base non-positively.

The object of the invention is to provide a precision blanking press characterized by a press frame with a high stiffness, low mass and simple design, the press allowing the transfer of higher cutting forces during fine blanking while safely eliminating the axial play between the adjustment elements and at the same time improving the operational safety.

This object is achieved by providing that the knife-edged ring cylinder (32) is designed as a one-piece core member (16), a separate stripping/pushing cylinder (31) with stripping/pushing piston (35) in line with the stroke axis (HU) being disposed on the core member, and that an ejector piston (76) is associated with the counterstay piston (75) in the main piston (2), wherein the stripping/pushing piston (35) and the ejector piston (76) each have associated working chambers (36a, 36b; 79) that are independent of one another and are mutually connected hydraulically, and at least two diametrically opposite pre-loading pistons (59) and piston rods (60) disposed at the top (4) are associated with the stripping/pushing cylinder/core member (31/16), each of said pre-loading pistons being guided in a pre-loading cylinder chamber (58a, 58b) in the top (4) perpendicular to, and in line with, an adjusting nut (25), the cylinder being pressurized with fluid from the hydraulic system (39), wherein the piston rods (60) are connected together by way of an adjusting cross member (62) such that an adjustment motion of the pre-loading piston and the piston rods (59, 60) applies an external vertical adjusting force (F) to the stripping/pushing cylinder/core member (31/16), locking or releasing the internal threading (24) of the adjusting nut (25) at the external threading (23) of the core member (16) axially, and the main piston (2) comprises protruding discus-shaped working surfaces (68a, 68b) that subdivide working chambers (69a, 69b) disposed one atop the other vertically with minimal travel (H) in the cylinder chamber (65) of the base (5).

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.