Abstract: A device is described for cutting soft, flexible sheet-like workpieces (1) which has a work support (2), a cutter head (3) which can be positioned against the work support (2) and has at least one cutter (4), and a device for holding down the workpiece (1) to operate in conjunction with the cutter head (3), whereby provision is made for said device to be located laterally adjacent to the cutter (4) and whereby said device can be adjusted in relation to said cutter perpendicular to the work support (2). In order to achieve advantageous construction conditions it is proposed that the hold-down device consists of at least one pressure roller (5) which forms a conical roller surface (18) and which has a trunnion (6) extending transversely in relation to the direction of cut and inclined at an angle to the work support (2).

Abstract: A forging machine (1) comprises eccentric-driven connecting rods (6), which are vertically movably guided in a forging box (3) radial to the eccentric shaft axis (E), and for a drive connection have a connecting rod small end (12) with a sliding surface at their end facing the eccentric for a non-rotating sliding cooperation with a bearing body (13) rotatably seated at the eccentric (11). To achieve a rugged and nevertheless simple adjustment of the vertical position, the sliding surface (20) of the connecting rod small end (12) forms a sliding path (G) normal to the axial plane defined by the eccentric shaft axis (E) and the connecting rod axis (P) and inclined with respect to the eccentric shaft axis (E), and via an actuator (22) the bearing body (13) forming a corresponding inclined surface (21) is movably arranged relative to the connecting rod (6) firmly supported in the direction of the eccentric shaft axis.

Abstract: To produce a chamfer or a keyway on a workpiece, the workpiece is machined with a longitudinal feed following the course of the chamfer or groove. To obtain a clean chamfer or groove in an economic way, machining is effected by a peeling operation by means of a peeling knife, whose broadside forming a cutting edge is aligned transverse to the feed direction during the longitudinal feed, and which is guided parallel to the workpiece surface with a certain cutting depth.

Abstract: A swaging machine (1) for swaging rod-shaped or tubular workpieces is comprised of an annular forging box (3) mounted in a machine frame (2) so as to be rotated and driven about the axis of movement (A) of the workpiece, where in radial recesses (4) of said forging box forging punches (5) are accommodated, which are acting against each other and are vertically movable via a lifting drive (7) while the forging box rotates at the same time.

Abstract: A swaging machine (1) comprises hammering units (5) vertically movably guided in radial recesses (4) of a forging box (3) rotatably and drivably mounted about the axis of movement (A) and pressure members supported on a coaxial supporting ring (8) surrounding the forging box (3), where the forging box (3) and/or the supporting ring (8) can be driven so as to rotate relative to each other, and during the respective passage the pressure members act on the hammering units (5) whose head portions protrude into the path of rotation of the pressure members, in the sense of an inwardly directed pressure pulse.

Abstract: A forging machine (1) comprises at least two forging punches (3) acting against each other and longitudinally guided in a forging box (1), which forging punches each have separate mechanical lifting drives and preferably vertical position adjusting means. To achieve a rugged lifting drive with high machine rigidities and a simplified construction, the lifting drives are comprised of a wobble plate drive (5) including a wobble plate (6) rotatably and drivably, but immovably mounted in the forging box (1) about a wobble axis (T) offset in parallel to the respective forging punch axis (S), and a pressure plate (9) associated to the wobble plate (6) and supported in the manner of a ball-and-socket joint on the end face of the associated forging punch (3) facing the wobble plate, where preferably the forging punches (3) can be pressurized via pressure springs (11) in the sense of a frictional connectoin of wobble plates (6) and pressure plates (9).

Abstract: For making a nest of cuts (N) for cutting blanks out of flat, irregular workpieces (W), the contour (U) and the flaws (F) of the spread workpieces (W) together with a workpiece characteristic are detected by means of a digitizing unit (3), and the corresponding data are read into a computer (5), which on the basis of these data and the data stored in the computer (5) concerning number, shape and quality requirements of the blanks calculates and stores a nest of cuts and utilizes the detected workpiece characteristics of the workpieces (W) as a workpiece code for allocating the nests of cuts (N) to the respective workpieces (W).

Abstract: A swaging machine (1) for swaging rod-shaped workpieces (W) has a ring-shaped forging box (3) supported in a machine frame (2) so as to be driven and rotated about the travel axis (A) of the workpiece (W), where in radial recesses (4) of the forging box forging punches (5) are accommodated which act against each other and can be lifted via a lifting drive (7) while the forging box rotates at the same time.

Abstract: For producing metallic bar stock there is first of all fabricated a primary product of substantially regularly round or angular cross-section, and this primary product is then deformed in cross-section to the final dimension corresponding to the bar stock by means of shaping. To provide for an efficient production of high-quality bar stock also in a minor quantity, the completely solidified primary product is subjected to a forging operation for a structural improvement before shaping it to the final dimension, during which forging off in one processing plane a spreading-restricted reduction of the cross-section in the range from (1.5 to 5):1 is effected.

Abstract: A method of cutting out blanks from workpieces of a sheet material comprises the steps of spreading the workpieces on a supporting surface of an imaging apparatus, manually marking the characteristic features of the workpieces to obtain markings, assigning a workpiece identifier to each spread workpiece, photographing the contour of the workpieces, the markings and the workpiece identifiers to obtain corresponding data, entering the obtained data into a computer having a memory having stored therein data as to number, contour and quality requirements of the blanks, the computer computing a pattern on the basis of the entered and stored data, storing the computed pattern and allocating the stored pattern to the workpieces identified by the workpiece identifiers, placing a respective workpiece on a working surface of a cutting apparatus in a determined position, photographing the one workpiece and the determined position thereof to obtain corresponding data, entering the obtained data into the computer, the com

Abstract: A method and apparatus for supporting and retaining a workpiece on a work-supporting deck for machining. The work-supporting deck includes vacuum aspirators each having a lifting ram formed with an axial suction bore and a suction cup carried on top of the lifting ram and communicating with the suction bore. An actuator is connected to each lifting ram and individually operable to move the associated lifting ram along a vertical axis. A clamping device releasably clamps onto each of the lifting rams. The actuator moves the clamped clamping device and lifting ram along a displacement path parallel to the vertical or any other axis.

Abstract: For rationally preparing and laying tape material strips, an exchangeable cassette is provided which is selectively insertable in a cutting station and a laying head. The cassette comprises two rotatable roll holders for a delivery roll from which tape material carried on a support layer is unreeled in the cutting station until the delivery roll is empty and a storage roll on which the support layer carrying cut tape material pieces is wound. The rotatable roll holders in the cutting station and the laying head and holders for the delivery and storage rolls are arranged to form a plug connection.

Abstract: A work-supporting deck for use in machine tools for processing flat material comprises vacuum aspirators, which serve to support and retain a workpiece and carry suction cups, which are adjustable in height by actuators.To provide economical means for reliably retaining the workpieces substantially independently of its shape and size, a multiplicity of vacuum aspirators are provided, which are arranged in rows and columns and are connected each to an individually operable actuator for moving the suction cup between an inactive lower position and an active upper position.

Abstract: The invention relates to an apparatus for cutting a workpiece made of a polymer. The apparatus combines a cutting tool operable to perform a feed movement along a desired line of cut relative to a portion of the workpiece to be cut, the cutting tool includes a cutter blade subjected to ultrasonic vibration as it cuts the portion of the workpiece, with a thermal control arranged to maintain the portion of the workpiece at a pre-selected temperature.

Abstract: Method of cutting a three-dimensional shaped piece of a material having large pores out of a block by trimming the block with adjacent cuts of a predetermined width guided along planes extending tangentially to the surface of the shaped piece whereby scrap of the material is produced, and cutting kerfs into the scrap no later than the trimming along planes extending radially relative to the shaped piece surface and longitudinally substantially parallel to each other, the cutting planes being spaced from each other at the shaped piece surface a maximum distance corresponding to the predetermined width of the adjacent cuts. For this purpose, an ultrasound assembly may be used, which comprises a knife which has a shaft portion extending in the direction of vibration of the knife and a cutting portion attached to the shaft portion and extending transversely to the direction of vibration, the shaft portion and the cutting portion having cutting edges.

Abstract: A machine tool for processing flat stock comprises a work table having a processing surface, which can preferably be subjected to a vacuum, and a tool carriage, which is movable along the processing surface. A feeder is associated with the work table at one end thereof. In order to provide such a machine tool which involves a relatively small structural expenditure and distinguishes by an economical mode of operation, the work table is supplemented toward the feeder by a receiving table having a receiving surface of the work table, and the machine table composed of the work table and the receiving table supports two pallets, which are reciprocable between positions on the work table and the receiving table and in alternation constitute the processing surface of the work table and the receiving surface of the receiving table.

Abstract: An apparatus for trimming three-dimensional workpieces made, e.g., of plastic comprises a bottom platen for supporting the workpieces and a cutter, which is movable relative to the bottom platen along a line of cut. To permit an automatic trimming by means of an inserted-tooth cutter, the bottom platen extends across the line of cut to support also that portion of the workpiece which is to be trimmed off. The bottom platen has a top surface for supporting the workpiece and is formed with a groove extending along the line of cut.

Abstract: An apparatus for processing workpieces, comprises a fixing deck, which has a supporting surface and is provided with fixing device, and a numerically controlled tool unit, which is movable over the supporting surface. In order to effect a reliable fixing of the workpieces by a simple and effective method, the fixing device comprises at least one holding-down unit, which includes a holding-down carriage, which is movable over the supporting surface, and a power-operable holding-down finger, which is operable at selectable locations, and that the carriage moving device and finger actuating device are adapted to be controlled in dependence on the control of the tool unit.

Abstract: A cutting installation for cutting out blanks from a sheet material band comprises a cutting table comprising a conveyor band forming a working surface and operable to move in a conveying direction, and a source of low pressure applicable thereto, a cutting head movable over the working surface of the conveyor band, the cutting head comprising a cutting tool, a sheet material band supply station arranged upstream of the conveyor band in the conveying direction, and a sheet material band receiving station arranged downstream of the conveyor band in the conveying direction. To rationalize the cutting operation and enable the waste to be separated automatically, the installation has a waste collector received on the cutting table, the waste collector comprising a carriage reciprocably movable along the conveyor band and including a guide roller extending transversely to the conveying direction and placeable upon the sheet material band, and a driven, rotatable storage roller arranged above the guide roller.

Abstract: A cutting plant for cutting blanks out of a starting strip comprises a cutting deck, which has a top surface to which a vacuum is applied, a cutting carriage, which is movable over the top surface and is provided with a cutting tool that is adjustable to cut to a defined depth. The plant also comprises a dispenser rotatably mounting a supply roll of the starting strip to be dispensed onto the top surface and a take-up device rotatably mounting a take-up roll. To permit an efficient cutting operation, the dispenser comprises a brake for braking the starting strip between the supply roll and the cutting deck and the take-up device has a drive for intermittently driving the take-up roll under the control of a measuring device for measuring the length of processed material which is to be taken up.