Methods for the cold extrusion of metallic elements with dead or through holes and plant for carrying out said methods
AssigneeAmafa Service S.R.L.
InventorAlessandro Vescovini
Life of this patent
Estimating the term…
Abstract
Cold extrusion procedures for obtaining metal elements such as for example bushings, nuts or other elements with dead or through holes, screws, standard and special shape extruded or pressed products, etc. on a machining center comprising a series of hydraulic presses connected to each other with an automatic movement system. The final drilling or shearing of the elements is advantageously carried out by a dedicated drilling or shearing unit, working at high speed, which can consist of a vertical mechanical press. The use of the plant comprising several hydraulic presses together with the rapid drilling or shearing unit makes it possible to achieve a high level of productivity.
Claims30
A procedure for the cold processing of tubular metal elements or other elements with dead or through holes, nuts, comprising the following machining steps:
- (a) preparing a blank of full metal material from rolls;
- (b) straightening the full metal material after unrolling from the skein;
- (c) cutting the metal material into pieces of a determined length;
- (d) passing each piece sequentially through a plurality of work stations of a work centre comprising several cold hydraulic presses in order to obtain a blank element presenting one or two longitudinally opposite dead holes separated by a central transverse section, wherein each piece is first cold machined by a hydraulic press, then extracted from said hydraulic press by means of a suitable manipulator robot and conveyed to an adjacent hydraulic press for a subsequent cold machining operation;
- and
- (e) through drilling the blank to remove the central traverse section;
- wherein the metal elements have a diameter greater than 30 mm.
A procedure for the cold processing of metal elements, comprising the following machining steps:
- (a) preparing a blank of full metal material in the form of bars, which bars are loaded in bundles in a bar sectioning plant;
- (b) cutting the metal bars into pieces of a determined length after being presented from the bar sectioning plant;
- and
- (c) passing each piece sequentially through a plurality of work station of a cold multi-hydraulic-press plant in order to obtain a finished element with or without swarf or waste, wherein each piece if first cold machined by a hydraulic press, then extracted from said hydraulic press by means of a suitable manipulator robot and conveyed to an adjacent hydraulic press for a subsequent cold machining operation;
- wherein the metal elements have a diameter greater than 30 mm.
A procedure for the cold processing of tubular metal elements or other elements with dead or through holes, nuts, comprising the following machining steps:
- (a) preparing a blank of full metal material from rolls, wherein setting up and preparation of the full blank differs according to the metal material used;
- (b) straightening the full metal material after the material is unrolled from the skein;
- (c) cutting the metal material into pieces of a determined length;
- (d) passing each piece sequentially through a plurality of work stations of a work centre comprising several cold hydraulic in order to obtain a blank element presenting one or two longitudinally opposite dead holes separated by a central transverse section, whereby each piece is first cold machined by a hydraulic press, then extracted from said hydraulic press by means of a suitable manipulator robot and conveyed to an adjacent hydraulic press for subsequent cold machining operation;
- and
- (e) through drilling the blank to remove the central traverse section;
- wherein the metal elements have a diameter greater than 30 mm.
A plant for the implementation of a procedure for the cold processing of tubular metal elements or other elements with dead or through holes, nuts, comprising the following machining steps:
- (a) preparing a blank of full metal material from rolls;
- (b) straightening the full metal material the material is unrolled from the skein;
- (c) cutting the metal material into pieces of a determined length;
- (d) passing the pieces sequentially through a plurality of work stations of a work centre comprising several presses in order to obtain a blank element presenting one of two longitudinally opposite dead holes separated by a central transverse section;
- and
- (e) through drilling the blank by removal of this central traverse section;
- wherein the metal elements having a diameter greater than 30 mm,
- wherein the plant comprises a series of cold hydraulic presses adjacent to each other, designed to carry out a successive series of pressing operation on pieces to be machined wherein each piece is first cold machined by a hydraulic press, then extracted from said hydraulic press by means of a suitable manipulator robot and conveyed to and adjacent hydraulic press for a subsequent cold machining operation.
A procedure for the cold processing of metal elements, comprising the following machining steps:
- (a) preparing a blank of full metal material in the form of bars, which bars are loaded in bundles in a bar sectioning plant, in which the setting up and preparation of the full blank differs according to the metal material used;
- (b) cutting the metal bars into pieces of a determined length;
- and
- (c) passing each piece sequentially through a plurality of work station of a cold multi-hydraulic-press plant in order to obtain a finished element with or without swarf or waste, wherein each piece is first cold machined by a hydraulic press, then extracted from said hydraulic press by means of a suitable manipulator robot and conveyed to an adjacent hydraulic press for a subsequent cold machining operation;
- wherein the metal elements have a diameter greater than 30 mm.
A plant for the implementation of a procedure for the cold processing of metal elements comprising the following machining steps:
- (a) preparing a blank of full metal material in the form of bars, which bars are loaded in bundles in a bar sectioning plant;
- (b) cutting the metal bars into pieces of a determined length;
- and
- (c) passing the pieces sequentially through a plurality of work station of a multi-hydraulic-press plant in order to obtain a finished element with or without swarf or waste;
- wherein the metal elements have a diameter greater than 30 mm,
- wherein the plant comprises a series of cold hydraulic presses adjacent to each other, designed to carry out a successive series of cold pressing operations on pieces to be machined wherein each piece is first cold machined by a hydraulic press, then extracted from said hydraulic press by means of a suitable manipulator robot and conveyed to an adjacent hydraulic press for a subsequent cold machining operation.
Dependencies are inferred from the claim text.