Abstract:
An embroidering and laser processing machine including at least one sewing head, one laser head and one laser generator, a work holder mounted on a machine table capable of movement in an X-axis and Y-axis direction according to predetermined movement data, the laser generator being on-off controlled according to laser cut codes which are included in the predetermined movement data.
Abstract:
Sheet metal edges to be welded are preheated prior to welding. At a given welding speed, this results in a smaller temperature gradient in the material to be welded. Consequently the welding speed can be increased, or material which would otherwise provide poor weld quality can be welded at a high temperature gradient. The preheating is carried out for example by high-frequency excitation of the material to be welded.
Abstract:
In order to join a first plate element such as a rear quarter panel of an automobile and a second plate element such as a roof panel together, an edge portion of the first plate element is provided with a joggled portion. The joggled portion is formed integrally with a general portion of the first plate element by way of a shoulder. The joggled portion includes an offset reinforcing portion having a band-shaped recess along the shoulder. A major portion lying closer to the terminal edge of the joggled portion than the reinforcing portion includes a joining surface to which an edge portion of the second plate element is joined in a face-to-face contact in such a manner that a gap is defined between an terminal edge of the edge portion and the shoulder. A welding material is built up into the recess of the reinforcing portion through the gap to thereby join the first and second plate elements together. The welding material within the recess reaches the back side of the second plate element so that the welding area is increased by the welding material and that the rigidity and strength of the joined structure is increased due to the cooperation of the reinforcing portion and the welding material. The structure prevents a local heating, suppresses thermal strains and concave thermal deformation of the two plate elements after cooling, and hence omits the hammering after the welding.
Abstract:
The invention relates to a process for cutting and/or welding preferably geometrically differently shaped metal sheets (10a, 10b), preferably sheet-metal panels, of the same or different gauges and straight and/or irregular weld seams, especially for motor vehicle coachwork, with jet tools, in which: a) the metal sheet(s) to be cut and/or at least two sheets to be butt-welded together are fitted and secured on a support (3) in the position to be cut and/or welded together; b) the sheets secured on the support are taken at irregular distances and/or discontinuously in front of the cutting or welding device (15) (machining device), on which c) for cutting and/or welding processes the machining device is moved at least transversely to the direction of transport of the sheets in accordance with the course of the irregular cutting line or weld seam, and in which d) the sheets (10a, 10b) secured to the support (3) are continuously and/or with an optimum spacing moved along beneath the machining device (15) at a speed depending on the cutting or welding rate and/or the course of the cutting line or weld seam, and an appropriately designed processing installation for implementing said process.
Abstract:
In an apparatus for connecting two workpieces together by welding, the workpieces lie on supporting surfaces and are butted together at their edges to form a butt joint. The workpieces are subjected to pressure on the side opposite to the supporting surfaces. At least one supporting surface is capable of yielding under pressure, and, in so doing, changes its position in relation to the butt joint, so as to reduce any gap between the workpieces.
Abstract:
A post continuous hot rolling method where a rear end portion of a preced metal block and a fore end portion of a succeeding metal block are cut and the metal blocks joined to each other by heating and pressing followed by a finish rolling, wherein a poorly joined portion is removed by shaving the defective portion through application of rotating cutters prior to a final finish rolling of the joined blocks.
Abstract:
An orthodontic assembly that includes a band and an attachment has one or more spot welds to secure the band to the attachment. The spot welds are characterized by the lack of any outer surface weld deformation that is circular in shape, or that is visible to the naked eye when viewed at a distance of twenty-four inches. Apparatus for welding the attachment to the band includes a subframe that is swingable in an arc to follow the inner contour of the band in order to provide automated welding on mesial and distal sides of the attachment.
Abstract:
A method of joining a first electroconductive plate member made of metal to a second electroconductive plate member made of metal dissimilar to the metal for the first plate member by the use of at least one anchor peg made of the same metal as the second plate member. The first and second plate members are initially overlapped one above the other to provide a plate assembly which is subsequently clamped under pressure between welding electrodes with the anchor peg positioned between one of the welding electrodes and the first plate member. Thereafter, an electric current is supplied to the welding electrodes to initially cause a portion of the first plate member held in contact with the anchor peg to melt by resistance-heating of the anchor peg to thereby allow the anchor peg to be pierced through the first plate member and then to cause the anchor peg extending completely across a thickness of the first plate member to be welded to the second plate member.
Abstract:
A method and system for cutting a web, such as a patterned fabric, displays a nested template pattern for the fabric along with a superimposed image of the fabric on a display screen, to allow the nested template pattern to be moved relative to the fabric image, under operator control. The nested template pattern may be moved as a whole, and individual templates may be moved, rotated or warped, so that a new template pattern is produced which is aligned to the fabric image, notwithstanding defects such as skew, bow or uneven repeat in the fabric. Once produced, the new template pattern is converted into customized cutting instructions for the fabric. The customized instructions are used to control a cutting station, for example a laser cutting station, to cut each section of fabric according to its customized cutting instructions.High speed cutting of patterned fabric may be provided by simultaneously capturing the image of a first section of fabric, generating a customized template pattern for a second section of fabric, the image of which has already been captured, and cutting a third section of fabric, the customized cutting instructions for which have already been generated.
Abstract:
Apparatus for and method of joining the trailing and leading ends of a pair of metal sheet or strip sections, preferably in a continuous strip processing line, comprising a shear for trimming the ends of the sections, clamps for clamping the trimmed ends and holding them in narrow overlapped relation, planishing means to mash down the overlapped ends and welding means to weld the mashed-down ends, the clamps holding the overlapped ends against movement in a longitudinal direction away from each other after trimming and during planishing and welding operations.