US20120227547A1 - Method for producing reversible blades - Google Patents

Method for producing reversible blades Download PDF

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Publication number
US20120227547A1
US20120227547A1 US13/511,206 US201013511206A US2012227547A1 US 20120227547 A1 US20120227547 A1 US 20120227547A1 US 201013511206 A US201013511206 A US 201013511206A US 2012227547 A1 US2012227547 A1 US 2012227547A1
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US
United States
Prior art keywords
support part
chipping
regions
cutting
distal
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.)
Abandoned
Application number
US13/511,206
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English (en)
Inventor
Helmut Maisser
Helmut Ponemayr
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.)
Voestalpine Boehler Profil GmbH
Original Assignee
Voestalpine Boehler Profil GmbH
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 Voestalpine Boehler Profil GmbH filed Critical Voestalpine Boehler Profil GmbH
Assigned to BOEHLER YBBSTAL PROFIL GMBH reassignment BOEHLER YBBSTAL PROFIL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MAISSER, HELMUT, PONEMAYR, HELMUT
Publication of US20120227547A1 publication Critical patent/US20120227547A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B23P15/40—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/10—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons knives; sickles; scythes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/005—Tools therefor

Definitions

  • the invention relates to a method for producing reversible knives with profiled cross section, in particular for a use in chopping machines for wood chipping, composed in cross section of a proximal support part with at least one fitting means for fastening the knife in a detachable and displacement-proof manner and on both sides on the support part a distal chipping region containing the cutting edges, wherein a preliminary material with large longitudinal extension is subjected to a surface processing and a support profile is formed therefrom by rolling.
  • the prior art includes reversible knives of the type described above in different embodiments.
  • the embodiments mainly represent advantageous economical and/or technical innovations with respect to a special property profile of the knives.
  • EP 0 271 481 A discloses a method for producing in particular machine blades of hot-rolled flat steel, wherein a roll tab with homogeneous material structure in the cutting edge region is formed essentially on the side surface by overfilling the last groove.
  • a reversible knife that can be used in a knife carrier in a predetermined position by projections or recesses interacting in terms of fit, and two welded-on working parts distal in cross section with blades of high-alloy tool steel, is disclosed by document AT 398 401 B.
  • Reversible knives of the referenced type have economical disadvantages due to a complex production method and/or disadvantages of inadequate product quality or a lack of individual desired use qualities.
  • the object of the invention is now to disclose a generic method for producing reversible knives, by means of which the property profile thereof is optimized economically even with harsh stresses in use.
  • proximal fitting means and distal regions of the support part are simultaneously formed from the preliminary material by rolling in an overfilled groove, which distal parts far towards the longitudinal axis have a cold-worked, essentially unoriented structure and consequently a preferred strengthening of the material.
  • These distal hardened parts, partially pressed out of the groove, are removed essentially at room temperature and a flat surface is formed, wherein it is ensured that the strength of the material achieved by cold working is retained in the flat region.
  • Attachment parts of tool steel are metallically connected to the surfaces of the support part formed in this manner, wherein the connection or welding is carried out in a high-energy manner, that is, without disadvantageous depth action. In this manner only an unimportant reduction in strength of the material of the support part hardened by cold working is achieved in the connection region, which produces a desired high mechanical stability of a fixing of the attachment part.
  • a forming of a chipping region with a cutting edge takes place respectively on the attachment part by means of cutting, optionally in combination with partial cold working, wherein a high-strength connection to the support part is maintained.
  • a thermal material hardening and tempering of the edge region is thereby provided such that no heat affecting of the zone with the metallic bond or welding without any additional materials takes place on the attachment part.
  • a final sharpening of the blade and a cutting to length of the knives can now take place in a simple manner.
  • the preliminary material with large longitudinal extension after a dimensionally exact processing of the surface thereof and before a rolling to form a support part, is heated by a rapid heating in a period of less than 50 sec., in particular of less than 15 sec., preferably by means of induction heating, in passage to a temperature of less than 900° C. with the proviso that the structure of the material remains in a cubic body-centered atomic structure.
  • the preliminary material to provide a rapid heating in a period of less than 50 sec., which heating is preferably carried out by induction in passage.
  • a maximum temperature for shaping the preliminary material is determined by the chemical composition or by the carbon content of the material. For a work hardening of the material during the shaping, at most a temperature is necessary at which a recrystallization of the structure is avoided and thus a forming of the part takes place in the temperature range with cubic body-centered atomic structure.
  • this is metallically fixed with attached parts of tool steel with a thickness of more than 0.9 mm but less than 2.9 mm and a width of 1.0 mm to 4 mm by fusion without any additional material, in particular by means of laser welding.
  • the carbon content of the usually low-alloy support part is to be oriented to the carbon activity of the attached parts established by alloying technology, in order to keep low or inactive a carbon diffusion to the high-alloy tool steel and thus a danger of a formation of a brittle region in the welding zone.
  • the attached parts on the support part are further developed by cutting and/or by non-cutting shaping to form chipping regions essentially triangular in cross section with cutting edges, the mechanical stresses in the region of the connection zone can be minimized in a favorable manner and the material strength therein can be increased.
  • the blade regions with the cutting edges on the chipping part after a final machining to the axially symmetrical precise representation of the cutting edges in passage are subjected to a thermal material quenching and tempering by hardening and quenching the blade region of tool steel.
  • desired properties and hardness values of the blade regions with respect to the field of use of the knives can be adjusted.
  • a support part with great longitudinal extension after shaping of the distal chipping and blade regions and a thermal quenching and tempering of the regions with the dressed cutting edges is cut to length and finally formed to produce reversible knives ready for use.
  • FIG. 1 Preliminary material
  • FIG. 2 Shaped support part
  • FIG. 3 Processed support part
  • FIG. 4 Support part with attached part
  • FIG. 5 Support part with chipping region
  • FIG. 6 Reversible knife
  • FIG. 1 shows a cylindrical preliminary material 1 with a processed surface 11 with a rough depth R y , (R z ISO) of less than 45 ⁇ m.
  • FIG. 2 shows a support profile 2 shaped by means of rolling with an overfilled groove, which support profile in the distal regions respectively has a roll tab 23 .
  • rolling fitting means 21 , 22 with a concave shape 21 and a convex 22 shape have been worked proximally at the same time into the carrier body 2 .
  • FIG. 3 shows diagrammatically a support profile body produced by separation 3 from the distal roll tabs 23 and provided with processed surfaces 3 .
  • FIG. 4 shows in a schematic illustration respectively one attached part 4 fixed to the support part 2 , wherein a metallic bonding 41 of the parts 2 , 4 was carried out by fusing without any additional material, in particular by means of laser welding.
  • FIG. 5 shows respectively a chipping part 5 formed by processing an attached part 4 , with a blade region 51 distanced from a bond or a weld seam 41 .
  • FIG. 6 shows diagrammatically a knife W cut to measured length comprising a support part 2 with proximally positioned fitting means 21 , 22 comprising a concave indentation 21 shaped in the knife axial longitudinal direction and a convex projection 22 lying opposite with attached parts 4 permanently attached to the support part 2 distally by metallic bonding 41 , which attached parts are further developed to form chipping parts 5 and have thermally hardened blade regions 51 with cutting edges 52 .
  • Test results showed that, above a certain carbon content of the support part 2 material, a carbon diffusion towards the tool steel part in the connection region 41 can take place depending on temperature and time, whereby brittle regions formed in the weld seam can cause the chipping parts 5 to break loose.
  • Support parts 2 of carbon steels with a low C concentration of less than 0.35% by weight showed this danger to a much lower extent, wherein a prior strengthening of the material caused by cold working at a temperature in the alpha range of the alloy provides sufficient toughness and strength properties for extreme stresses of the knives even after an attachment by welding of an attached part 4 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
US13/511,206 2009-11-27 2010-10-13 Method for producing reversible blades Abandoned US20120227547A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0189209A AT507892B1 (de) 2009-11-27 2009-11-27 Verfahren zur herstellung von wendemessern
ATA1892/2009 2009-11-27
PCT/AT2010/000392 WO2011063435A1 (de) 2009-11-27 2010-10-13 Verfahren zur herstellung von wendemessern

Publications (1)

Publication Number Publication Date
US20120227547A1 true US20120227547A1 (en) 2012-09-13

Family

ID=42676627

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/511,206 Abandoned US20120227547A1 (en) 2009-11-27 2010-10-13 Method for producing reversible blades

Country Status (8)

Country Link
US (1) US20120227547A1 (ru)
EP (1) EP2504123B1 (ru)
AT (1) AT507892B1 (ru)
CA (1) CA2779503C (ru)
ES (1) ES2446348T3 (ru)
PL (1) PL2504123T3 (ru)
RU (1) RU2503530C1 (ru)
WO (1) WO2011063435A1 (ru)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140166797A1 (en) * 2012-12-17 2014-06-19 Nolan Den Boer Processor disk and method of making
US20150122103A1 (en) * 2013-11-05 2015-05-07 Boehler Profil Gmbh Method for producing cutting blades
US20160230238A1 (en) * 2014-10-16 2016-08-11 L. Ronnie Nettles Leather Lace Beveling Apparatus and Method
CN113305524A (zh) * 2021-06-22 2021-08-27 锐胜精机（深圳）有限公司 刀具及其制作方法

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928086A (en) * 1974-12-02 1975-12-23 Gen Motors Corp High strength ductile steel
DE2612153A1 (de) * 1975-04-03 1976-10-14 Uddeholms Ab Vorrichtung zum kontinuierlichen erhitzen bewegter metallbahnen oder -baender, insbesondere von bandstahl
US4222799A (en) * 1978-11-14 1980-09-16 Neturen Company, Ltd. High-strength spring steel and its manufacturing process
US4784033A (en) * 1986-01-22 1988-11-15 Milford Products Corporation Triple chip ground carbide tip bandsaw blade with ductile filler
US5058410A (en) * 1989-03-14 1991-10-22 Boehler Gesellschaft M.B.H. Method and apparatus fo producing thin wire, rod, tube, and profiles, from steels and alloys with low deformability, particularly hardenable steels
JPH05237534A (ja) * 1992-02-26 1993-09-17 Mitsubishi Electric Corp 加熱圧延装置
US5360495A (en) * 1989-07-25 1994-11-01 Albert Schuler Process for hardening cutting edges with an oval shaped plasma beam
US5660218A (en) * 1993-07-08 1997-08-26 Sunds Defibrator Woodhandling Oy Blade system to be used in wood chipping, a blade; a guide member and a filler member as well as a method for changing blades
JPH09225505A (ja) * 1996-02-20 1997-09-02 Nkk Corp 熱延鋼帯の圧延方法
EP1359230A1 (en) * 2000-12-18 2003-11-05 JFE Steel Corporation Production method for steel plate and equipment therefor
US6755919B2 (en) * 2000-07-27 2004-06-29 Jfe Steel Corporation Stainless steel tube for automobile structure
US20120067100A1 (en) * 2010-09-20 2012-03-22 Ati Properties, Inc. Elevated Temperature Forming Methods for Metallic Materials

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT3984B (ru) 1900-02-05 1901-04-25 Albert Silbermann
DE2533471A1 (de) * 1975-07-25 1977-02-10 Greiner Gmbh & Co Wendeschneidplatte
DE2704999A1 (de) 1977-02-07 1978-08-10 Ver Edelstahlwerke Ag Verfahren und anlage zur herstellung von bandstahlmessern
AT390221B (de) * 1986-12-12 1990-04-10 Boehler Gmbh Verfahren zur herstellung von schneidwerkzeugen
SU1673358A1 (ru) * 1989-06-14 1991-08-30 С.М.Кочкин Способ изготовлени лезвийного режущего инструмента
AT398401B (de) * 1992-08-26 1994-12-27 Boehler Ybbstalwerke Wendemesser, insbesondere wendehobelmesser
RU2062304C1 (ru) * 1993-12-08 1996-06-20 Российский материаловедческий центр Режущий инструмент
US20090250139A1 (en) * 2006-04-13 2009-10-08 Hiroshi Nakamura Plate-like cutting tool and fixing jig
AT504450B1 (de) * 2006-11-13 2010-09-15 Boehler Ybbstal Profil Gmbh Einweg-schneidmesser zum zerspanen von natur- oder kunststoffen und verfahren zu deren herstellung
US7938155B2 (en) * 2008-02-29 2011-05-10 Simonds International Corporation Ring strander knife assembly and method of use

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928086A (en) * 1974-12-02 1975-12-23 Gen Motors Corp High strength ductile steel
DE2612153A1 (de) * 1975-04-03 1976-10-14 Uddeholms Ab Vorrichtung zum kontinuierlichen erhitzen bewegter metallbahnen oder -baender, insbesondere von bandstahl
US4222799A (en) * 1978-11-14 1980-09-16 Neturen Company, Ltd. High-strength spring steel and its manufacturing process
US4784033A (en) * 1986-01-22 1988-11-15 Milford Products Corporation Triple chip ground carbide tip bandsaw blade with ductile filler
US5058410A (en) * 1989-03-14 1991-10-22 Boehler Gesellschaft M.B.H. Method and apparatus fo producing thin wire, rod, tube, and profiles, from steels and alloys with low deformability, particularly hardenable steels
US5360495A (en) * 1989-07-25 1994-11-01 Albert Schuler Process for hardening cutting edges with an oval shaped plasma beam
JPH05237534A (ja) * 1992-02-26 1993-09-17 Mitsubishi Electric Corp 加熱圧延装置
US5660218A (en) * 1993-07-08 1997-08-26 Sunds Defibrator Woodhandling Oy Blade system to be used in wood chipping, a blade; a guide member and a filler member as well as a method for changing blades
JPH09225505A (ja) * 1996-02-20 1997-09-02 Nkk Corp 熱延鋼帯の圧延方法
US6755919B2 (en) * 2000-07-27 2004-06-29 Jfe Steel Corporation Stainless steel tube for automobile structure
EP1359230A1 (en) * 2000-12-18 2003-11-05 JFE Steel Corporation Production method for steel plate and equipment therefor
US20120067100A1 (en) * 2010-09-20 2012-03-22 Ati Properties, Inc. Elevated Temperature Forming Methods for Metallic Materials

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
English Translation of AT 398401 *
Filipovic, Mirjana. Evolution of artifical defections during shape rolling (Stockholm 2007), pp 1, 9-10. *
Rudnex, V. et al. Handbook of Induction Heating, 2003, pp 12-21 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140166797A1 (en) * 2012-12-17 2014-06-19 Nolan Den Boer Processor disk and method of making
US9833785B2 (en) * 2012-12-17 2017-12-05 Kooima Company Method of making a processor disk
US20150122103A1 (en) * 2013-11-05 2015-05-07 Boehler Profil Gmbh Method for producing cutting blades
US10532486B2 (en) * 2013-11-05 2020-01-14 Boehler Profil Gmbh Method for producing cutting blades
US20160230238A1 (en) * 2014-10-16 2016-08-11 L. Ronnie Nettles Leather Lace Beveling Apparatus and Method
CN113305524A (zh) * 2021-06-22 2021-08-27 锐胜精机（深圳）有限公司 刀具及其制作方法

Also Published As

Publication number Publication date
EP2504123B1 (de) 2013-12-04
AT507892B1 (de) 2010-09-15
AT507892A4 (de) 2010-09-15
CA2779503C (en) 2015-04-07
CA2779503A1 (en) 2011-06-03
ES2446348T3 (es) 2014-03-07
RU2503530C1 (ru) 2014-01-10
WO2011063435A1 (de) 2011-06-03
PL2504123T3 (pl) 2014-05-30
EP2504123A1 (de) 2012-10-03

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BOEHLER YBBSTAL PROFIL GMBH, AUSTRIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MAISSER, HELMUT;PONEMAYR, HELMUT;REEL/FRAME:028248/0581

Effective date: 20120302

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION