Abstract:
A method of manufacturing a tank suitable for storing very cold cryogenic liquids, such as liquefied ethylene (LEG) or natural gas (LNG) or a corresponding medium, the basic form of the tank corresponding to a rectangular prism and being manufactured from aluminium or the like material. The tank is produced at least mainly from prefabricated construction elements of few different types so that plane elements (2) to be used as shell panels of the tank, the elements being produced by mechanically extruding aluminium profile elements (1) or the like, are produced, the elements including a plane part (1 a) and a stiffening part (lb) and which are welded by their plane parts (l a) to each other using friction welding. The plane elements (2) produced thus are provided with longitudinal and/or transverse stiffeners (4) being produced by mechanically extruding aluminium profile elements (3) or the like, which are welded to each other by using friction welding. The plane elements (2) having stiffeners (4) produced thus are attached to each other and/or to separately produced edge (5) and/or corner elements (6) into self-supporting volume units (7) having at least four sides.
Abstract:
The invention relates to a method of cutting a sheet-like piece into one or several smaller pieces by using camera means and a controllable cutting apparatus, the directions and values of the coordinate systems of which are calibrated to correspond to each other. In the method following measures are taken: the piece to be cut is placed on a cutting surface located within the recording area of the camera means, the piece is photographed by the camera means and on the basis thereof the outlines of the piece are determined and the information on the outlines of the piece is input into the positioning system, where the cutting paths are established and input into the control system of the cutting device, which determines necessary parameters for the cutting and on the basis of these, controls the cutting of the piece into parts according to given instructions.
Abstract:
A method and an arrangement for finishing a number of different pre-treated profile blanks, such as T-bars or the like, at a finishing station provided with a transport means for transporting the profile blanks, positioning means for profile blanks, imaging means, at least one finishing robot and a computer-based control system. The method includes the following operations accomplished at the finishing station: each profile blank is introduced into the finishing station by means of the transport means and positioned into a certain preknown position; a selected field of view of the profile blank is photographed by means of the imaging means; the basic form and essential dimensions of the profile blank are detected from the picture; certain forms, taught to the control system and deviating from a regular profile blank, especially lead-through openings, lightening holes and yield cuts, are searched and identified from the picture, on the basis of which a classification of the profile blank is achieved, the control system determining the further operations to be carried out in each case on the basis of the classification; the control system controls the finishing robot to accomplish one or more of the following operations: milling, grinding and/or cutting the profile blank, or the profile blank is moved directly to the next step; the profile blank is moved one field of view forward in the finishing station.
Abstract:
A method and an arrangement for finishing a number of different pre-treated profile blanks, such as T-bars or the like, at a finishing station provided with a transport means for transporting the profile blanks, positioning means for profile blanks, imaging means, at least one finishing robot and a computer-based control system. The method includes the following operations accomplished at the finishing station: each profile blank is introduced into the finishing station by means of the transport means and positioned into a certain preknown position; a selected field of view of the profile blank is photographed by means of the imaging means; the basic form and essential dimensions of the profile blank are detected from the picture; certain forms, taught to the control system and deviating from a regular profile blank, especially lead-through openings, lightening holes and yield cuts, are searched and identified from the picture, on the basis of which a classification of the profile blank is achieved, the control system determining the further operations to be carried out in each case on the basis of the classification; the control system controls the finishing robot to accomplish one or more of the following operations: milling, grinding and/or cutting the profile blank, or the profile blank is moved directly to the next step; the profile blank is moved one field of view forward in the finishing station.