EP0310693A1 - Verfahren zum Herstellen von Wendemessern - Google Patents

Verfahren zum Herstellen von Wendemessern Download PDF

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Publication number
EP0310693A1
EP0310693A1 EP87114627A EP87114627A EP0310693A1 EP 0310693 A1 EP0310693 A1 EP 0310693A1 EP 87114627 A EP87114627 A EP 87114627A EP 87114627 A EP87114627 A EP 87114627A EP 0310693 A1 EP0310693 A1 EP 0310693A1
Authority
EP
European Patent Office
Prior art keywords
cutting
pressing
knives
turning
cutting edge
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.)
Withdrawn
Application number
EP87114627A
Other languages
German (de)
English (en)
French (fr)
Inventor
Heiner Barke
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.)
Barke-Maschinenmesser GmbH
Original Assignee
Barke-Maschinenmesser 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 Barke-Maschinenmesser GmbH filed Critical Barke-Maschinenmesser GmbH
Publication of EP0310693A1 publication Critical patent/EP0310693A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G17/00—Manually-operated tools
    • B27G17/02—Hand planes
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/60—Making other particular articles cutlery wares; garden tools or the like
    • B21D53/64—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades

Definitions

  • the invention relates to a method for producing reversible knives, in particular for use in hand planers and / or planing machines, in which an endless strip steel is hardened and, after hardening, a cutting edge is ground on at least one of its two longitudinal sides before the individual reversible knives are cut to length.
  • the object of the invention is therefore to provide a method for producing reversible knives of the type mentioned by which the rounded corners of the reversible knives are easier to manufacture and thus the manufacture of the reversible knife is considerably cheaper.
  • the V-shaped embossments run in an arc. So that the corners of the turning knife are already round, so that a corresponding reworking of the corners is no longer necessary.
  • the cutting edges of the turning knives are provided by one or more pressing and / or Squeezing in a crowning area spaced from the cutting edges is a slightly convex Get shape. So far, the curves were made by hand or by means of a grinding machine, with each knife having to be inserted and sharpened individually, which is very complex and causes high costs for a mass-produced article, of which hundreds of thousands are manufactured.
  • the manufacturing process according to the invention can be integrated into the general manufacturing process without great effort, the pressing and / or squeezing process being able to be carried out, for example, together with punching processes with which, for example, the holes for the locating pins are punched into the turning knives.
  • the convex design of a cutting edge of a reversible knife can in principle also be applied by means of a straightening machine.
  • this has the disadvantage that, in the case of double-sided reversible knives, the other cutting edge is then not convex but rather concave.
  • the manufacturing method according to the invention can be carried out particularly simply in such a way that the pressing and / or squeezing processes take place by means of one or more punches.
  • the curvature of the cutting edges is determined by the shape and the pressing force of the punches.
  • the shape of the corner areas is also influenced by the crowning process.
  • the slightly convex shape of the cutting edges can be achieved in a further development of this inventive idea by the fact that the crowning areas do not reach the cutting lines.
  • the pressing and / or squeezing process takes place only in the middle part of the turning knife. This somewhat "softer" area is only a few millimeters away from the fully hardened cutting edge.
  • the crowning process can be carried out according to the invention both on the front and on the back of the turning knives.
  • V-shaped embossments 7, 8, 9, 10 are made at regular intervals in the region of the cutting lines 5, which diverge outwards.
  • V-shaped embossing areas 7, 8 and 9, 10 are somewhat rounded towards the respective turning knives 2, 3, 4, so that they continuously merge into the longitudinal sides 11, 12 of the steel strip 1.
  • the turning knives are then hardened, and a method known from DE 33 00 106 A1 can be used to produce such steel band knives. According to this method, only the narrow edge area of the actual cutting edges is fully hardened using high frequency. The intermediate middle part 15 is only slightly hardened. The edge regions indicated by dashed lines in FIG. 1 are somewhat wider than the later cutting edges 13 and 14.
  • the cutting edges 13 and 14 are ground on either only one or on both longitudinal sides 11, 12 of the steel strip 1.
  • the protruding V-shaped embossed areas 7, 8 and 9, 10 are completely ground away, so that a corresponding recess is created.
  • the individual turning knives 2, 3, 4 are cut to length from the endless strip steel 1.
  • the turning knives that are almost finished are now provided in the unhardened middle part 9 with fitting holes 16 and 17, 18 and 19. Instead of the round fitting holes shown in the figures, any other fitting openings can also be used.
  • a crowning process provided according to the invention can be carried out, through which the cutting edges 13, 14 acquire a slightly convex shape.
  • the turning knives 2, 3, 4, which adjoin the narrow edge areas of the cutting edges 13 and 14, are carried out pressing and / or squeezing operations by means of a stamp (not shown).
  • the cutting edges 13, 14 of the reversible knives are shaped slightly convex (belly-shaped).
  • the degree of deformation depends on the shape, the pressing force and the point or points of attack of the stamp or stamps.
  • the crowning regions 20 and 21 shown in the drawing can be completely different both in terms of their shape and their extent. However, they should not extend to the cutting lines 5, 6.
  • stamps which are preferably hard metal stamps
  • inventive method can also be used to produce reversible knives that have a slightly convex cutting edge on only one side, since the inventive method is only used in the area of one cutting edge in these reversible knives.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Shearing Machines (AREA)
EP87114627A 1986-06-24 1987-10-07 Verfahren zum Herstellen von Wendemessern Withdrawn EP0310693A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863620807 DE3620807A1 (de) 1986-06-24 1986-06-24 Verfahren zur herstellung von wendemessern

Publications (1)

Publication Number Publication Date
EP0310693A1 true EP0310693A1 (de) 1989-04-12

Family

ID=6303405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87114627A Withdrawn EP0310693A1 (de) 1986-06-24 1987-10-07 Verfahren zum Herstellen von Wendemessern

Country Status (4)

Country Link
EP (1) EP0310693A1 (pt)
AT (1) AT386973B (pt)
CH (1) CH673104A5 (pt)
DE (1) DE3620807A1 (pt)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406560B (de) * 1997-04-24 2000-06-26 Payer Lux Elektroprod Verfahren zum herstellen von klingenblöcken bzw. lamellenschneidköpfen für rasierapparate
EP1479784B1 (de) * 2003-05-21 2008-12-31 Thyssenkrupp Automotive AG Verfahren zum Herstellen von Formbauteilen
CN103386433A (zh) * 2012-05-11 2013-11-13 陆学中 碎纸刀片冲压成型加工方法
CN111349760A (zh) * 2020-04-30 2020-06-30 重庆派斯克刀具制造股份有限公司 快换式刨刀热处理加工工艺方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620807A1 (de) * 1986-06-24 1988-02-04 Barke Maschinenmesser Gmbh Verfahren zur herstellung von wendemessern

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258142A (en) * 1926-01-08 1926-09-16 Roland Davy Improvements in or relating to the manufacture of safety razor and similar blades
DE581776C (de) * 1933-08-02 Tonsor Ab Verfahren zur Herstellung der Schneidkanten von duennen Rasierklingen
DE649557C (de) * 1937-08-27 Franz Rodeck Holzhobel mit auswechselbaren, mit gerader Schneide versehenen ebenen, biegsamen Messerklingen
US2365581A (en) * 1943-12-16 1944-12-19 Gillette Safety Razor Co Safety razor blade and process of manufacturing the same
DE3300105A1 (de) * 1983-01-04 1984-07-12 Barke GmbH, 6384 Schmitten Verfahren zur herstellung von ritz- oder trennmessern, insbesondere fuer die holzwolle-herstellung
DE3316822A1 (de) * 1983-05-07 1984-11-08 Maschinenfabrik Bezner Gmbh & Co Kg, 7980 Ravensburg Schneideinsatz, insbesondere bei holzzerspanungsmaschinen
DE3620807A1 (de) * 1986-06-24 1988-02-04 Barke Maschinenmesser Gmbh Verfahren zur herstellung von wendemessern

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE581776C (de) * 1933-08-02 Tonsor Ab Verfahren zur Herstellung der Schneidkanten von duennen Rasierklingen
DE649557C (de) * 1937-08-27 Franz Rodeck Holzhobel mit auswechselbaren, mit gerader Schneide versehenen ebenen, biegsamen Messerklingen
GB258142A (en) * 1926-01-08 1926-09-16 Roland Davy Improvements in or relating to the manufacture of safety razor and similar blades
US2365581A (en) * 1943-12-16 1944-12-19 Gillette Safety Razor Co Safety razor blade and process of manufacturing the same
DE3300105A1 (de) * 1983-01-04 1984-07-12 Barke GmbH, 6384 Schmitten Verfahren zur herstellung von ritz- oder trennmessern, insbesondere fuer die holzwolle-herstellung
DE3316822A1 (de) * 1983-05-07 1984-11-08 Maschinenfabrik Bezner Gmbh & Co Kg, 7980 Ravensburg Schneideinsatz, insbesondere bei holzzerspanungsmaschinen
DE3620807A1 (de) * 1986-06-24 1988-02-04 Barke Maschinenmesser Gmbh Verfahren zur herstellung von wendemessern

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406560B (de) * 1997-04-24 2000-06-26 Payer Lux Elektroprod Verfahren zum herstellen von klingenblöcken bzw. lamellenschneidköpfen für rasierapparate
EP1479784B1 (de) * 2003-05-21 2008-12-31 Thyssenkrupp Automotive AG Verfahren zum Herstellen von Formbauteilen
CN103386433A (zh) * 2012-05-11 2013-11-13 陆学中 碎纸刀片冲压成型加工方法
CN103386433B (zh) * 2012-05-11 2016-06-29 陆学中 碎纸刀片冲压成型加工方法
CN111349760A (zh) * 2020-04-30 2020-06-30 重庆派斯克刀具制造股份有限公司 快换式刨刀热处理加工工艺方法

Also Published As

Publication number Publication date
DE3620807C2 (pt) 1989-02-09
AT386973B (de) 1988-11-10
CH673104A5 (pt) 1990-02-15
DE3620807A1 (de) 1988-02-04
ATA206687A (de) 1988-04-15

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Inventor name: BARKE, HEINER