Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Rundum-Bearbeitung eines Rohlings (38) mit einer Bearbeitungsmaschine wie beispielsweise einer Fräsmaschine, wobei die Rundurn-Bearbeitung nach Massgabe einer dreidimensionalen Vorlage (28) geschieht. Das Verfahren lässt sich präziser schneller und kostengünstiger durchführen, wenn in einem ersten Schritt die Raumform und gegebenenfalls zudem die Oberflächenbeschaffung der dreidimensionalen Vorlage (28) automatisch vermessen wird, und die zugehörigen Daten abgespeichert werden, in einem zweiten Schritt ein Rohling (38) von wenigstens einem Spannadapter (10,27, 35, 36) gehalten wird und von der Bearbeitungsmaschine respektive der Fräsmaschine unter Verwendung der genannten Daten zur numerischen Steuerung ein erster Bereich in seine endgültige, der bestimmungsgemässen Verwendung entsprechende Teilform gebracht wird, und in einem dritten Schritt der teilbearbeitete Rohling von wenigstens einem Spannadapter (27, 35) im ersten, endgültig bearbeiteten Bereich gehalten wird und der übrige Bereich von derselben Bearbeitungsmaschine respektive Fräsmaschine unter Verwendung der genannten Daten zur numerischen Steuerung in seine endgültige, der bestimmungsgemässen Verwendung entsprechende Gesamtform gebracht wird.
Abstract:
The present invention relates to a tool head for a chip metal working tool having a cutting insert (3), comprising a basic holder (1) and an integral insert holder (4), the forward portion of which is provided with an insert pocket between a lower support portion (6) and an upper clamp portion (5) wherein the upper clamp portion (5) is actuatable by a press device. The characteristics is that the press diveice is in the shape of a clamp screw (19) with a conical head (18) that is received in a recess in the basic holder (1) and arranged to be subjected to displacement in its axial direction such that its conical head (18) upon insertion in a slit (20) spaced from the insert pocket achieves such bending outwardly of the upper portion of the basic holder such that thanks to its movement a clamping of the insert occurs.
Abstract:
The invention relates to a method for a rotary machining of a blank (38) by means of a machine tool like a milling machine. Said rotary machining is carried out according to a three-dimensional model (28). The aim of said invention is to carry out the inventive method in a more accurate, fast and cost-effective manner. For this purpose at the first stage, the spatial shape and possibly surface structure of the three-dimensional model (28) are automatically measured and corresponding data are recorded. At a second stage, the blank (38) is maintained by at least one clamping adapter (10, 27, 35, 36) and the first section of the blank is machined by the machine tool or the milling machine with the aid of said data for digital control in such a way that said area is definitely shaped according to the intended use thereof. At a third stage, said partially machined blank is maintained at the level of the first machined area thereof by means of at least one clamping adapter (27, 35), thereby exposing the remaining area to the action of the machine tool or the milling machine with the aid of data for digital control, in such a way that the entire blank is definitely shaped according to the intended use thereof.
Abstract:
The invention relates to a method for engraving printing cylinders used for rotogravure in an electronic engraving machine. According to this said method, at least two engraving sections (A, B) of a given width (SB) are fitted next to each other, in the acial direct ion of the printing cylinder (1). These sections (AB) are engraved with their respective engraving element (3). Before engraving, an axial reference position is pre-set for each engraving element (3). The axial spacing between these reference positions corresponds to the pre-set widths (SB) of the engraving sections (A, B). The engraving elements (3) are placed approximately in their reference positions (RP). The differences in the axial spacing between the reference positions of the engraving elements (3) and the actual positions occupied as a result of the approximate positioning are then measured. During engraving, the engraving elements (3) are moved along the printing cylinder (1), still incorrectly spaced as a result of the approximate positioning. The spacing errors are compensated by displaced engraving of the engraving sections (A, b) on the printing cylinder (1), so that the engraving sections (A, B) have the pre-set widths (SB) despite the incorrect spacing between the graving elements (3).
Abstract:
An engraving system and method for engraving a pattern (Figure 1) using a plurality of engraving devices (34 and 36). The apparatus and method are for sequencing and engraving of the plurality of engraving devices (34 and 36) such that the areas engraved by those heads (34 and 36) meet to provide a continuous engraved pattern (Figure 4b). The system and method (Figure 1) also include an imaging system (22) for imaging the engraved areas associated with each engraving head (34 or 36) so that the heads (34 and 36) or signals (from head driver 62) driving the heads (34 and 36) may be adjusted to further facilitate providing engraved areas which appear as if they had been engraved by a single engraving head when, for example, the engraved area of one head (34 or 36) meets the engraved area of another head (34 or 36). Also disclosed is a method for sequencing and transmitting image data associated with an image to be engraved in order to accomodate any cylindrical offset or the angular displacement between, for example, two engraving heads (34 and 36) that are positioned in a generally opposed relationship.
Abstract:
This invention is a system for locating a plurality of engraving heads (68, 68') on an engraver (10) and automatically positioning such heads into a predetermined configuration. A mechanism for positioning the heads (68, 68') includes a lead screw (36) and a drive nut (38) which is rotatable relative to the lead screw (36). Each of the heads (68, 68') includes a rotatable drive nut (38) with a respective motor (40) for rotating the nut (38) whereby the heads (68, 68') are selectively positioned into a predetermined configuration. The heads (68, 68') are mounted on a carriage (26) movable in an axial direction relative to a cylinder (20) to be engraved. The heads (68, 68') are selectively positionable on the carriage (26) and the carriage (26) includes a nut (38) threadably engaged with a lead screw (36) whereby the carriage (26) is driven in an axial direction relative to the cylinder (20) to be engraved. A method for engraving a cylinder (20) includes automatically adjusting a plurality of engraving heads (68, 68') into a predetermined configuration, and engraving a plurality of images onto the cylinder (20).