摘要:
Abstract: An object of the invention is to provide a manufacturing method and an apparatus for a twisted flat bar which can prevent the pitch from becoming inconsistent and makes it possible to process a long flat bar into a twisted flat bar. The manufacturing method for a twisted flat bar is characterized in that a flat bar (5) is sandwiched between two round bars (7), which are positioned so as to be inclined at the same angle in different directions relative to the longitudinal direction of the flat bar from the two sides, and the above described two round bars are rotated relative to the flat bar around the rotational axis in the longitudinal direction of the flat bar, and at the same time, the flat bar is moved in the longitudinal direction of the flat bar relative to the round bars.
摘要:
A method of making a so called pine-cone spiral decorative element of metal, which is formed from a plurality of bars (1), generally four or eight in number, having circular or polygonal cross-section, cut in desired length, comprises steps of bending each bar (1), whose end sections (3,3) remain straight; welding at both their ends (5,5) the end sections (3,3) of the bars (1), which are placed side by side and angularly spaced so that the bars look like meridians of an unfinished product (4) formed according to a rotation body; and mutual rotation of the one welded ends (5) of the bars to the other ends (5) thereof by a desired angle. Further, a machine for embodying the method of the invention is disclosed.
摘要:
The present invention relates to a method and apparatus (1, 31) for forming a three-dimensional object and in particular to a method and apparatus (1, 31) for forming a three-dimensional beam (5). It is desirable to form three-dimensional beams (5) having complex forms by using an efficient forming process for the beams which may be incorporated into existing high volume production techniques. The apparatus (1, 31) for forming three-dimensional beams (5) comprises a support means and an actuation means. Support members (2, 32, 41, 51, 61) spaced about the longitudinal axis of the support means locally define an opening (4, 35, 43, 53, 63) for supporting a section of the beam (5). The position of adjacent openings (4, 35, 43, 53, 63) relative to one another defines the overall form of the beam (5) and the actuation means defines the position of each opening (4, 35, 43, 53, 63).
摘要:
The invention concerns a machine for bending and twisting flat metal wire for producing a motor vehicle wiper arm. It comprises means (3) feeding and maintaining the wire (2), and at least means (51) capable of gripping and releasing the wire (2) in output of the feeding and maintaining means (3), and which is, under the action of driving means associated with transmission means, mobile in several directions, rotating (V) about the axis (X) moving the wire (2), and moving, in one direction or another, in a direction (P) perpendicular to the surfaces (20) of the wire (2).
摘要:
There is provided a plastic working machine for plastically working a tube (33) by employing tube holding and spinning means for holding and spinning the plastically workable tube (33) around the axis of the tube (33) and first and second plastic working tools (57,58) which face to each other so as to pinch the tube (33) in the radial direction of the tube (33) and which are movable along the radial and axial directions of the tube (33) while being pressed against the tube (33). The plastic working machine executes a step of plastically working the tube (33) by the first and second plastic working tools (57,58) by continuously spinning the tube (33) around the axis thereof and by applying compressive load or tensile load along the axial direction of the tube to the tube (33).
摘要:
The apparatus which is the subject of this application allows a metal blank which, in one embodiment, comprises a plurality of bars held in parallel relationship, to be formed into a twisted and bowed shaped object (4) which is referred to in the art as a basket. The forming can be achieved without the need for heating of the metal blank or high powered drive means and so, in one embodiment, can be formed by cold forming and the apparatus can be manually driven. The apparatus can also be adapted to form metal blanks into other forms by the fitting of appropriate forming tools.
摘要:
The apparatus which is the subject of this application allows a metal blank which, in one embodiment, comprises a plurality of bars held in parallel relationship, to be formed into a twisted and bowed shaped object (4) which is referred to in the art as a basket. The forming can be achieved without the need for heating of the metal blank or high powered drive means and so, in one embodiment, can be formed by cold forming and the apparatus can be manually driven. The apparatus can also be adapted to form metal blanks into other forms by the fitting of appropriate forming tools.
摘要:
Es wird ein Verfahren zur Herstellung von gekrümmten Werkstükken, insbesondere von Voll- und Hohlprofilen mit komplexen Querschnitten, durch eine Kombination von Strangpressen und Biegen beschrieben, wobei das Werkstück (6), gleichzeitig mit oder unmittelbar nach dem formgebenden Strangpreßvorgang durch eine quer zur Strangpreßrichtung auf das Werkstück einwirkende Kraft gebogen wird. Zur Durchführung wird eine Vorrichtung vorgeschlagen, bestehend aus einer Blockerwärmungsanlage, einer Strangpreßeinrichtung mit Matrize (4), die am Austritt des Stranges eine Austrittsebene aufweist, sowie Einrichtungen zur Blockhandhabung, Scher- bzw. Fördereinrichtungen und einer Abkühlstrecke. Bei der neuen Vorrichtung ist nach der Matrize (4) in Strangpreßrichtung gesehen, eine Querkraft erzeugende Vorrichtung (7) angeordnet, die gegen den austretenden Strang (6), anpreßbar ist, wobei in den Raum zwischen Strangpreßfläche und Austrittsebene eine von Anlageflächen freie Biegezone vorhanden ist.