摘要:
Bei einer Schneidmaschine (10) für die Herstellung von Zuschnitten vorgegebener Kontur aus einer großflächigen Bahn (17) eines flexiblen Materials, insbesondere einer Textilstoffbahn (17) ist als Schneidkopf ein Fräskopf (11) vorgesehen, der mittels eines Koordinaten-Wagens entlang der vorgesehenen Schneidkontur selbsttätig steuerbar verfahrbar ist. Als Fräser ist ein Fingerfräser (18) verwendet, der im Schneidbetrieb die Materialbahn (17) anhebt. Der Fräser tritt durch eine Bohrung (31) einer Platte (29) hindurch, deren unterer Rand (36) als Scherkante ausgebildet ist, welche die Erzielung sauberer Schnittkonturen unterstützt. Bei Verwendung von Fräsern (18) mit einem Nenndurchmesser um 2 mm und einem Antrieb derselben mit Drehzahlen um 150 000 U/min können Vorschub-Geschwindigkeiten von 8 m/min und mehr erreicht werden.
摘要:
Die Erfindung betrifft einen Kühlkörper aus Metall, vorzugsweise aus einem massiven Metallblock, insbesondere aus Aluminium, sowie ein Verfahren und ein Werkzeug zur Herstellung desselben. Der Kühlkörper weist eine Mehrzahl von durch zwischen ihnen angeordnete Kühlkörperrippen (26) voneinander getrennten, nebeneinander angeordneten sowie parallel verlaufenden Fluidleitungen (32) zum Durchleiten von Kühlfluid auf. Er ist dadurch gekennzeichnet, dass die Fluidleitungen (32) durch Nuten (24) gebildet sind, die in das Metall eingefräst sind.
摘要:
A method for machining a plurality of slots in a disk-shaped metallic alloy part (101) secured in a part holder (111) using a plurality of cutting inserts (104) on a cutter body (102) of a slotting cutter (100). Each of the cutting inserts (104) includes a cutting edge and a backwall opposite the cutting edge, the backwall of each cutting insert (104) being supported by a support portion (120) of the cutter body (102), each of the cutting inserts (104) being retained on a periphery of the cutter body (102) between a wedge-like fastener (106) and a retaining slot in the cutter body (102), and each of the cutting inserts (104) and its corresponding retaining slot in the cutter body (102) comprising corresponding dovetail surfaces.
摘要:
The present invention discloses an angle clearance-free welding method for uPVC doors and windows, which is used for welding a welding angle formed by assembly of a left side welding unit and a right side welding unit, wherein opposite assembly inner side faces of the left side welding unit and the right side welding unit are cut surfaces; before the left side welding unit and the right side welding unit are welded, the outer surface of the outer contour of each of the cut surfaces needs to be milled off inward by using a cutting saw for a width of 1-4mm and a depth of 1.5-3mm to form a groove on the outer surface of the outer contour, so that a material fused by welding of the cut surfaces in a welding process does not overflow to the surface and is retained in the groove, no angle clearance is necessary after welding, a seamless splicing effect is achieved, and seamless butt joint of the patterns is achieved particularly for the welding of section bars with natural wood grains and patterns on the surfaces. Meanwhile, the present invention further discloses a double-head cutting saw used for cutting an end face and an end face contour in the above process.
摘要:
The method for welding profiled elements made of a plastic material, in particular PVC, comprises the steps of: preparing two profiled elements (3) made of a plastic material, arranged with respective zones to be welded (4) facing one another; heating the zones to be welded (4); before the heating step, the step of making a groove (19) in correspondence to a peripheral edge of each of the zones to be welded (4); coupling the zones to be welded (4) to one another, by pressing the profiled elements (3) against one another to keep the zones to be welded (4) in reciprocal contact, the step of coupling the zones to be welded (4) defining a sub-step of melting the zones to be welded (4) into one another to define a welding bead and comprising the sub-steps of: arranging pressing means (27, 28) in correspondence to the grooves (19) to define, in collaboration with the grooves (19), a containing compartment (19a) of the welding bead, the pressing means (27, 28) comprising: - a first work surface (62) having a protruding portion (63); and a second work surface (64) of final finishing; and displacing the pressing means (27, 28) alternately between: an idle position moved away from the profiled elements (3); a first work position wherein the first work surface (62) is abutted on the grooves (19) with the protruding portion (63) located inside the containing compartment (19a) to deviate the welding bead towards the side walls (61) of the containing compartment (19a); and a second work position wherein the second work surface (64) is abutted on the grooves (19) so as to obtain a finished welding bead.