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WO2003041888A1 - Procede et agencement pour l'usinage d'un objet - Google Patents

Procede et agencement pour l'usinage d'un objet Download PDF

Info

Publication number
WO2003041888A1
WO2003041888A1 PCT/SE2002/002068 SE0202068W WO03041888A1 WO 2003041888 A1 WO2003041888 A1 WO 2003041888A1 SE 0202068 W SE0202068 W SE 0202068W WO 03041888 A1 WO03041888 A1 WO 03041888A1
Authority
WO
WIPO (PCT)
Prior art keywords
tools
machining
ramp
stay
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE2002/002068
Other languages
English (en)
Inventor
Lars EKLÖF
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balcus AB
Original Assignee
Balcus AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Balcus AB filed Critical Balcus AB
Priority to DK02789056T priority Critical patent/DK1444060T3/da
Priority to DE60221882T priority patent/DE60221882T2/de
Priority to EP02789056A priority patent/EP1444060B1/fr
Publication of WO2003041888A1 publication Critical patent/WO2003041888A1/fr
Priority to NO20041943A priority patent/NO330974B1/no
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
    • B21D31/046—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal making use of rotating cutters

Definitions

  • the present invention relates on the one hand to a method for machining an object, according to the preamble of patent claim 1, and on the other hand to an arrangement for machining an object, according to the preamble of patent claim 8.
  • the invention is aimed in particular at a method and arrangement, for manufacturing expanded metal.
  • a metal piece is supported by means of a stay from one side and is machined from the opposite side by means of a tool provided with teeth, which produces slits in the metal piece at the side of the stay and stretches the slit metal to form openings or meshes.
  • a toothed cutter which is pressed against the metal piece which is moved stepwise in the lateral direction relative to the cutter. This method is relatively slow and is difficult to use in the case of narrow, strip-shaped metal pieces.
  • One object of the invention is to produce an improved solution for machining objects, in particular in connection with the manufacture of expanded metal. Another object is to achieve a solution which is easy to adapt to different requirements.
  • the objects of the invention are achieved on the one hand by using a method for machining objects, with features according to patent claim 1, and on the other hand by using an arrangement for machining objects, with features according to patent claim 8.
  • a straight portion of the chain between two chain wheels can be positioned at a predetermined angle in relation to the longitudinal direction of the object and in this way bring about the desired smooth machining movement as the teeth gradually approach the object.
  • the chain can in this connection, by means of a suitable guide, change the running angle so that the teeth can leave the machined object without coming into further contact with it.
  • a strip can advantageously be machined by slitting and stretching along both edges, with a stay positioned between the edges.
  • a number of machining stations can be arranged one after another, with the width of the stay decreasing gradually in the various machining stations so that new mesh rows can be positioned increasingly closer to one another and a large number of mesh rows can be produced rapidly with a rapid feed movement of the object.
  • larger meshes can be obtained than previously without the material breaking or being deformed.
  • the solution according to the invention can also be used in connections other than the manufacture of expanded metal, for example for stamping an object, punching or other types of machining.
  • Figs 1-3 show various stages of the manufacture of expanded metal, each figure showing on the one hand a side view and on the other hand a section marked in the side view;
  • Fig. 4 shows a side view of a solution according to the invention
  • Fig. 5 shows a view of a part for a chain link
  • Fig. 6 shows a perspective view of the part in Fig. 5
  • Fig. 7 shows a diagrammatic view of the part in Fig. 5;
  • Fig. 8 shows an end view of a chain link
  • Fig. 9 shows a diagrammatic side view of a machining station according to the invention.
  • Fig. 10 shows a section X-X in Fig. 9.
  • Figs 1-3 show how a flat object 1, here in the form of a metal strip, is converted by stepwise machining into an object of expanded-metal type.
  • the strip is slit locally from below a little way inside the edge and is stretched at the slit locations so that raised, stretched portions 2 are created and form a wave-like pattern.
  • the machining then continues according to Fig. 2 with slitting and stretching further in, with a displacement as shown in the longitudinal direction of the strip, so that openings 3 are formed.
  • Fig. 3 slitting and stretching take place in a location in the longitudinal direction of the strip corresponding to that in Fig.
  • FIG. 4 A suitable method and a suitable arrangement for carrying out the machining shown in Figs 1-3 is shown in principle in Fig. 4.
  • the object 1 is fed in horizontally from the left in the drawing and is moved to the right under a stay 4, an edge portion of the object 1 intended for slitting and stretching projecting laterally beyond the stay 4 so as to be capable of being brought into contact with machining tools 5 arranged below the object 1, here in the form of cutting teeth on chain links 6 which together form a chain 7, of which only a portion is shown.
  • An upper part of the chain 7 is, together with the object 1, moved to the right in the drawing and is in this connection supported on a support 8 which has a first ramp 9 which is inclined upward at an angle ° from the horizontal plane.
  • the chain links 6 are raised gradually in the direction toward the object 1 and the stay 4, so that the tools 5 meet and penetrate the object 1 and in doing so slit and stretch portions 2.
  • the chain link 6 concerned which has brought about this stretching is located at the top of the first ramp 9 which, at a ridge 11, meets a second ramp 12 which is inclined downward at an angle ⁇ ° relative to the horizontal plane, the inclination of the second ramp 12 being greater than the inclination of the first ramp 9.
  • Each chain link 6 is supported against the support 8 via two support rollers 13, namely a front support roller and a rear support roller, the front support roller forming the rear support roller for the chain link in front, and the rear support roller forming the front support roller for the chain link behind.
  • each tool 5 will therefore be pivoted about a pivoting center located at a spacing from the object and at right angles to the direction of movement, so that it is pivoted out of contact with the machining location without striking against it.
  • a body 14 is provided, at the top, with a tool 5 in the form of a cutter 15 which is mounted in a suitable recess and is suitably replaceably and reversibly mounted, for example by means of a fixing device 16 in the form of a screw.
  • the cutter 15 is advantageously of the hard-metal type but can of course also be made in another suitable way and with a shape suitable for the purpose.
  • the cutter 15 is upwardly pointed and has a top 17 which, in the longitudinal direction of the chain link, is located between two holes arranged in the body 14, namely a front hole 18 and a rear hole 19. These holes are intended for spindles which interconnect adjacent chain links. Extending in the downward direction below the holes 18 and 19 is a plate-shaped guide tongue 20, the function of which is to guide the chain link 6 during its movement.
  • the chain link 6 is intended to be moved vertically upward, with its tool 5, at right angles to the horizontally positioned object 1.
  • the centers of the holes 18, 19 are, according to Fig. 5, located on a line 21 which forms an angle ⁇ ° with a horizontal line 22 which in turn forms a right angle with a vertical line 23 through the point 17 of the cutter 15.
  • a chain link 6 In order to achieve the desired pivoting movement of a chain link 6 as it passes the ridge 11 on the first ramp 9, it is necessary for the chain link 6 to be designed with such a geometry that this is possible. It is therefore necessary for the top 17 of the cutter 15 to be positioned correctly in relation to the holes 18 and 19, the size of the top angle ⁇ of the cutter 15 also having an effect.
  • a dimensional definition of the body 14 for a chain link 6 is shown in Fig. 7. At a given pitch of the chain 7, there is a predetermined spacing d between the holes 18 and 19, the vertical spacing h between the rear hole 19 and the top 17 and also the spacing b in the longitudinal direction of the chain between the rear hole 19 and the top 17 therefore having to be adapted to one another and to the size of the spacing d.
  • a chain link is shown in greater detail in Fig. 8 which shows, seen from the rear in the running direction of the chain 7 (from the left in Figs 4 and 5), a chain link 6 with two interconnected bodies 14 which have a mirror-inverted design in relation to one another and have their sides provided with cutters 15 facing one another.
  • a spindle 24 which is here passed through the front holes 18 in the bodies, and also through the rear holes 19 in bodies 14 (not visible here) in front, a spacer means 25 in the form of a sleeve is mounted between the bodies 14 in order to keep the bodies 14 at a predetermined mutual spacing, which can be changed by selecting a different size of spacer means 25 and a different length of the spindle 24.
  • each body 14 mounteded on the spindle 24 outside each body 14 is a support roller 13 which, according to Fig. 4, is intended to be supported against the support 8. These support rollers are axially locked on the spindle 24 in a conventional manner in order to maintain a predetermined spacing between the bodies 14 and their cutters 15.
  • the support rollers 13 are also intended, for driving and guiding the chain 7, to be capable of being brought into engagement with suitable toothed wheels or equivalent at suitable locations along the chain.
  • Fig. 9 shows diagrammatically a machining station 26 which is intended for machining an object 1 and, together with a number of similar machining stations arranged one after another, can form a machining installation (not shown in greater detail here), for example for manufacturing expanded- metal products.
  • a chain 7 of the type described above runs via a front toothed wheel 27, which is driving, and a rear toothed wheel 28, which is free-running and is suitably (in a manner not shown in greater detail here) adjustable in its spacing relative to the front toothed wheel 27 in order to keep the chain suitably tensioned in the case of, for example, different designs of the support 8 which is mounted between the two toothed wheels 27, 28, at the upper strand of the chain 7, in which way the chain 7 runs over the ramps 9 and 12 there as it passes the ridge 11 on the support 8 and therefore does not run in an entirely straight manner between the toothed wheels.
  • the two toothed wheels 27, 28 are double, for engagement with respective support rollers 13 at the ends of the spindles 24, and are mounted on shafts mounted in a stand 29.
  • the stay 4 here in the form of a chain 30, which, at the object 1, is supported upwardly via its lower strand against a support 31 and then runs via a toothed wheel 32 which, like the toothed wheels 27, 28, is of the double type and is suitably synchronized with the driving toothed wheel 27 so as to ensure that the links in the chain 30, each with its stay portion 33, form a completely continuous stay 4 when these links are, during the machining process, located above the support 8 and the stay 4 is in this connection loaded by the object 1.
  • Both the support 31 and the shaft for the toothed wheel 32 are mounted in the stand 29 and are thus appropriately fixed.
  • the object 1 is conveyed by means of the lower chain 7, the upper chain 30 running at the same speed.
  • Fig. 10 shows in greater detail in a section X-X in Fig. 9 how a machining station 26 is designed at the location where the machining of an object 1 takes place.
  • the support 8 includes two outer straight guides 34, on which the support rollers 13 of the chain 7 roll. Between the two outer straight guides 34, there are two inner straight guides 35 which, each together with its outer straight guide 34, guide the guide tongues 20 on the links of the chain so as to keep the cutters 15 on the links in the correct position relative to the stay 4.
  • a suitable mutual spacing between the outer straight guide 34 and the inner straight guide 35 is obtained by means of spacer elements 36.
  • each stay portion 33 is guided by means of a guide tongue 39 joined to it, which runs in a groove in the underside of the support 31.
  • a number of machining stages have already been performed here, with the result that the edges of the object 1 have been raised from their original position.
  • some form of deflection arrangement for the edge portions of the object 1 may be necessary in order to ensure good functioning.
  • the metal strip which in this case forms the object 1 should not have too great a width, suitably roughly 400 mm at the most.
  • the angle ⁇ can in principle have a value in the range 0-45°, but should suitably lie in the range of roughly 1-12°, and should preferably lie in the range of roughly 3-8° in order to allow flexible machining.
  • the design of the cutter 15 and the size of its top angle ⁇ of course also have an effect on how machining can be carried out.
  • This top angle is suitably selected to be obtuse so as not to generate excessive stresses in the material of the object being machined.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Punching Or Piercing (AREA)
  • Turning (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

Dans un agencement destiné à l'usinage d'un objet allongé (1), des outils disposés en série (5) exercent tout à tour une pression contre l'objet et usinent ce dernier pendant son déplacement dans le sens longitudinal, l'objet étant supporté par une entretoise (4). Dans ce cas, les outils (5) se déplacent d'abord le long d'une première rampe montante (9) jusqu'à une arête (11), puis ils amorcent une descente le long d'une seconde rampe descendante (12) et pivotent alors autour d'un centre pivot situé à l'écart de l'objet de sorte qu'ils pivotent sans être en contact avec le point d'usinage. L'objet en forme de bande peut être fendu et étiré le long de la bande à l'extérieur d'au moins un bord de l'entretoise de façon à former des ouvertures dans l'objet dans des rangées à déplacement latéral le long d'au moins un côté longitudinal. Les outils (5) sont chacun disposés sur leur propre maillon de chaîne (6) formant une partie d'une chaîne (7).
PCT/SE2002/002068 2001-11-13 2002-11-13 Procede et agencement pour l'usinage d'un objet Ceased WO2003041888A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK02789056T DK1444060T3 (da) 2001-11-13 2002-11-13 Fremgangsmåde og indretning til at maskinforarbejde en genstand
DE60221882T DE60221882T2 (de) 2001-11-13 2002-11-13 Verfahren und anordnung zur maschinellen bearbeitung eines objekts
EP02789056A EP1444060B1 (fr) 2001-11-13 2002-11-13 Procede et agencement pour l'usinage d'un objet
NO20041943A NO330974B1 (no) 2001-11-13 2004-05-12 Fremgangsmate og arrangement for bearbeiding av en gjenstand

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0103760-5 2001-11-13
SE0103760A SE518334C2 (sv) 2001-11-13 2001-11-13 Sätt och anordning för bearbetning av ett föremål

Publications (1)

Publication Number Publication Date
WO2003041888A1 true WO2003041888A1 (fr) 2003-05-22

Family

ID=20285951

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2002/002068 Ceased WO2003041888A1 (fr) 2001-11-13 2002-11-13 Procede et agencement pour l'usinage d'un objet

Country Status (7)

Country Link
EP (1) EP1444060B1 (fr)
AT (1) ATE369925T1 (fr)
DE (1) DE60221882T2 (fr)
DK (1) DK1444060T3 (fr)
NO (1) NO330974B1 (fr)
SE (1) SE518334C2 (fr)
WO (1) WO2003041888A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4621397A (en) * 1985-07-12 1986-11-11 Hannes Schrenk Method of and apparatus for producing expanded metal
EP0340619A1 (fr) * 1988-04-28 1989-11-08 Max Michael Dr. Späth Dispositif de fabrication de métal étiré
DE19720229A1 (de) * 1997-05-14 1998-11-19 Spaeth Michael Dr Verfahren zur kontinuierlichen Herstellung von Streckmetall aus einer Folie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4621397A (en) * 1985-07-12 1986-11-11 Hannes Schrenk Method of and apparatus for producing expanded metal
EP0340619A1 (fr) * 1988-04-28 1989-11-08 Max Michael Dr. Späth Dispositif de fabrication de métal étiré
DE19720229A1 (de) * 1997-05-14 1998-11-19 Spaeth Michael Dr Verfahren zur kontinuierlichen Herstellung von Streckmetall aus einer Folie

Also Published As

Publication number Publication date
DE60221882D1 (de) 2007-09-27
SE0103760D0 (sv) 2001-11-13
EP1444060B1 (fr) 2007-08-15
NO330974B1 (no) 2011-08-29
NO20041943L (no) 2004-07-12
EP1444060A1 (fr) 2004-08-11
SE0103760L (sv) 2002-09-24
ATE369925T1 (de) 2007-09-15
DK1444060T3 (da) 2007-12-17
SE518334C2 (sv) 2002-09-24
DE60221882T2 (de) 2008-05-08
NO20041943D0 (no) 2004-05-12

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