EP2159013A1 - Outil pour couper et entailler et son procédé de fabrication - Google Patents

Outil pour couper et entailler et son procédé de fabrication Download PDF

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Publication number
EP2159013A1
EP2159013A1 EP08162881A EP08162881A EP2159013A1 EP 2159013 A1 EP2159013 A1 EP 2159013A1 EP 08162881 A EP08162881 A EP 08162881A EP 08162881 A EP08162881 A EP 08162881A EP 2159013 A1 EP2159013 A1 EP 2159013A1
Authority
EP
European Patent Office
Prior art keywords
cutting
scoring tool
tool according
blade
bevel
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Withdrawn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
EP08162881A
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German (de)
English (en)
Inventor
Horst Peter Kämmerling-Essmann
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.)
ESSMANN AND SCHAEFER GmbH and Co KG
Original Assignee
ESSMANN AND SCHAEFER GmbH and Co KG
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 ESSMANN AND SCHAEFER GmbH and Co KG filed Critical ESSMANN AND SCHAEFER GmbH and Co KG
Priority to EP08162881A priority Critical patent/EP2159013A1/fr
Priority to DE202009009301U priority patent/DE202009009301U1/de
Publication of EP2159013A1 publication Critical patent/EP2159013A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/002—Materials or surface treatments therefor, e.g. composite materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section

Definitions

  • the invention relates to a cutting and scoring tool, preferably for a pressure cut, consisting of a band-shaped blade with a cutting edge and at least one cutting chamfer formed on a blade longitudinal side, starting from the cutting edge. Furthermore, the invention relates to a method for producing such a tool.
  • Such a tool is used in the paper processing and cartonboard industry to produce blanks for cartons or cartons from a paperboard, paperboard or even plastic material. This is usually done by punching devices that record the blade-shaped tools with at least the cutting process perpendicular to the material plane blade so that the present on a blade longitudinal cutting edge penetrates perpendicular to the material plane by lifting or rotational movement in the material.
  • the blanks can be cut out on the one hand and on the other hand also scored to form fold lines by only partial cutting, embossed, grooved or grooved, wherein the fold lines a folding of the blank, z. B. allow for a box.
  • ground chamfer can have a minimal hollow ground, resulting in excellent sharpness, so that a low punching pressure is required.
  • the dimensional accuracy of such a chamfer is not satisfactory for all purposes.
  • scraping is meant a machining, in which the workpiece to be machined relative to a stationary tool, for. B. a carbide tipped or the like is moved, d. H.
  • the steel strip is pulled longitudinally through at least one drawing station to form the chamfer.
  • Shaved chamfers have a very good dimensional stability due to their preparation in the drawing process, so that they are used for high demands on the dimensional accuracy.
  • the chamfer is weakly convex, the sharpness of this chamfer is small, and it does not act cutting, but pressing on the material, so that higher punching pressures are required.
  • the EP 0 234 009 B2 a cutting and scribe line consisting of a steel blade with a beveled chamfer formed on a blade longitudinal side, the blade being hardened in the area of the chamfer and the chamfer having a finish in the hardened area starting from the tip of the chisel.
  • the hardened area is about 3/10 to 5/10 mm - measured from the tip of the tip - and the degree of hardness is about 66 HRc and that the chamfer in the hardened area, in particular to a final hardness in the range of 50 to 64 HRc, preferably in the range of 57 to 59 HRc, is tempered.
  • Such tools have proven themselves in practice.
  • the tool has a comparatively increased service life, and the formation of cutting dust is largely avoided.
  • the cutting and scoring tool has a schabriefenfill from the tip of the claw-free honed surface.
  • the bevel angle of the fine grinding is in an advantageous embodiment about 45 ° to 60 °.
  • the DE 20 2007 013 402 U1 describes a cutting line for cutting sheet materials comprising a steel strip having a cutting edge, two side surfaces and a spine, further comprising first planar facets on both sides of the steel strip, a first rounded transition between the side surfaces and the first facets, and a second rounded transition between the first facets and the cutting edge.
  • the point angle at the cutting edge is greater than the angle between the first facets.
  • second facets may be introduced on both sides of the steel strip between the first facets and the cutting edge.
  • the first and the second rounded transition, the first facets and / or the second facets are polished.
  • the high demands on the tools used for cutting and scoring are derived from the fact that the cut material must have a high quality of cut or quality. This includes adherence to a geometrically accurate cut surface, the absence of banding and undulating lobes in the cutting direction, the absence of cracks in front of the cutting edge, low roughness of the cut surface, and a minimal amount of cutting dust.
  • the invention has for its object to further improve a cutting and scoring tool of the type mentioned in such a way that it better satisfies the said complex requirements, and to provide a method for its production.
  • the cutting bevel has an average roughness depth R Z of not more than 0.8 ⁇ m and an arithmetic mean roughness R a of not more than 0.20 ⁇ m according to DIN EN ISO 4287 (or earlier standard DIN 4768).
  • the average roughness depth R Z is the mean value of the single roughness depths of successive individual measuring sections, with individual roughness being the vertical distance of the highest from the deepest profile point in a measuring section understand is.
  • the average roughness R a is the arithmetic mean of the amounts of all profile values of the roughness profile.
  • the object is achieved in that by a stepped, wet and / or dry running finish micromachining on the cutting bevel values of the average roughness R z of not more than 0.8 microns and of an arithmetic mean roughness R a of not more than 0.20 ⁇ m in accordance with DIN EN ISO 4287.
  • the cutting bevel has an average roughness depth R Z of not more than 0.7 ⁇ m, preferably not more than 0.5 ⁇ m, and an arithmetic mean roughness R a of not more than 0.10 ⁇ m , preferably not more than 0.07 microns, according to DIN EN ISO 4287 has.
  • the invention is based on the finding that the surface quality of the cutting bevel corresponding to the averaged surface roughness R Z and the arithmetic mean roughness R a are in direct causal relationship with the cutting action of the cutting and scoring tool according to the invention. For example, under otherwise unchanged conditions, a punching force reduction can be achieved by 30 to 50 percent. In case of extreme straightness, a height tolerance of the cutting edge in the range of 0.002 mm to +/- 0.02 mm per running meter can be achieved, whereby the dressing time can be significantly reduced.
  • the inventive values of the average roughness R z and the arithmetic mean roughness R a can be achieved by means of a special finish micromachining step-wet and / or dry-using grinding wheels having a Mohs hardness of more than 9 or a Knoop hardness of over 4500 and also includes the use of leather, felt and fleece to treat the chamfer surface.
  • it may preferably be cubic boron nitride or diamond, z. B. in granulation of 150 to 240 US mesh or 280 to 600 US mesh according to ASTM E 11 or in resin bond as B64-46 or D54-15, the concentration of Abrasive is tuned to the process and can be in particular at 1 to 4 carats per cm 3 .
  • the cutting bevel Prior to finish micromachining, the cutting bevel may be scraped, ground, etched and / or eroded.
  • a preferred technological variant consists in that the phase is ground and / or scraped in a manner known per se, then hardened, tempered and ground.
  • the hardening can be realized inductively, by means of laser, plasma or electron beam, preferably with air cooling and optionally under protective gas. Hardening can be done before and / or after the finish micromachining.
  • round grain grinding wheels - grain size distributions according to the standard of FEPA (Fédération Europeene des Fabricants de Produits Abrasifs) for abrasive grains - are used, in particular no grinding along the cutting and scoring tool according to the invention but the discs with respect to their direction of rotation transversely to the longitudinal axis of the cutting and scoring tool according to the invention are placed standing on the chamfer surface.
  • FEPA Franceration Europeene des Fabricants de Produits Abrasifs
  • FIG. 1 shows, there is a cutting and scoring tool according to the invention, which is preferably used for a pressure cut, from a band-shaped blade 1 with a cutting edge 2 and at least one formed from the cutting edge 2 Schneidfase 3 on a blade longitudinal side 4.
  • a between cutting chamfer and a center plane XX formed by the blade 1 tip angle ⁇ at the cutting edge 2 may be in a range of 20 ° to 90 °, preferably in the range of 30 ° to 54 °.
  • the cutting bevel 3 has an average roughness depth R Z of not more than 0.8 ⁇ m and an arithmetic mean roughness R a of not more than 0.20 ⁇ m according to DIN EN ISO 4287.
  • R Z average roughness depth
  • R a arithmetic mean roughness
  • the chamfer 3 may have an average roughness R z of not more than 0.7 ⁇ m, in particular not more than 0.6 ⁇ m, and an arithmetic mean roughness R a of not more than 0.10 ⁇ m, preferably not more than 0 , 07 ⁇ m, according to DIN EN ISO 4287.
  • the blade longitudinal sides 4 are each formed symmetrically to the center plane XX by the blade 1 and have two similar cutting chamfers 3.
  • the blade longitudinal sides 4 are formed asymmetrically with respect to a longitudinal plane YY by the cutting edge 2 and have two dissimilar, especially unequal large cutting chamfers 3. It could also be present only a cutting chamfer 3.
  • a known technological treatment can be carried out by pulling a flat material made of spring band steel for the blade 1 with a thickness of 0.4 to 2 mm in a hard metal drawing block, so that one or both sides Cutting chamfer 3 is generated. This is called a so-called scraped bevel.
  • the chamfer 3 is made with a certain excess, in particular with an oversize 2/100 to 4/100 mm.
  • the cutting bevel 3 is now - at least in a tip region 5 - hardened, preferably induction hardened with a depth of insertion of 3/10 to 5/10 mm measured from the cutting edge 2 of.
  • the curing is preferably carried out to a hardness of 66 HRc.
  • the chamfer 3 can receive a fine grinding, which is carried out such that the existing after scraping oversize is removed. As a result, the softer outer skin of the hardened and tempered Schneidfase 3 is taken away at the same time.
  • this fine grinding which can be advantageously carried out with an added grinding wheel, the dimensional accuracy of the scraped Schneidfase 3 is not impaired, but is prevented by the fine ship that grooves occur in the chamfer surface.
  • U. a For example, in the course of the finish micromachining of the chamfer 3, a lapping process with the abovementioned abrasives may be used, the abrasives being distributed in a liquid or paste.
  • the cutting chamfer 3 is provided with a Lapping disc processed, with a lapping mixture is between this and the cutting bevel 3, which is a suspension of carrier medium (Läpp supplementkeit), possibly lubricant and Läppkorn (abrasive).
  • carrier medium Läpp
  • abrasive bodies In the abrasive bodies, it may preferably be cubic boron nitride or diamond, z. B. in granulation of 150 to 240 US mesh or 280 to 600 US mesh according to ASTM E 11 or on a disc in resin bond as B64-46 or D54-15 act. (B is boron nitride, D is diamond, data 64-46 and 54-15 refer to grain sizes according to FEPA).
  • punching force reductions can be achieved by 30 to 50 percent and a height tolerance of the cutting edge of not more than +/- 0.02 mm per meter, so that the dressing time can be significantly reduced.
  • FIG. 1 While at the in Fig. 1
  • the first and second embodiments, which are formed on both sides and symmetrically formed, are each directly adjacent to a wall section 6 whose surface runs parallel to the center plane XX of the blade 1
  • Fig. 2 illustrated second cutting embodiment of a cutting and scoring tool according to the invention that each Schneidfase 3 each adjacent to a standing at a smaller angle to the center plane XX Anschlußfase 7, which then connects to the wall section 6, the surface parallel to the mid-plane XX of the blade. 1 runs.
  • the not cutting acting Anschlußfase 7 requires no special finish micromachining. It can - as usual for the production of chamfers and also, as already mentioned, for the first method section for the production of the chamfer 3 applicable be prepared by processes or process steps such as scraping, grinding, fine grinding, etching and / or erosion.
  • an average roughness R z and an arithmetic mean roughness R a according to DIN EN ISO 4287 are characteristic, which are significantly greater than the respective inventively provided values.
  • Such surface quality values for the terminal bevel 7 are indicated by the profile image P7 in FIG Fig. 2 indicated, which a section of the in Fig. 3 represented profilogram with known on cutting chamfers existing surface quality.
  • the average roughness Ra on the surface of the present invention formed bevel ( Fig. 4 ) is 0.07 .mu.m and the average roughness R z is 0.43 .mu.m, while the corresponding values of the non-inventively designed surface of the terminal bevel 7 at 0.12 .mu.m and 0.88 .mu.m.
  • the stylus method was used, using the surface roughness tester "Surftest 301" Mitutoyo was used.
  • the stylus method is a method for the metrological description of surfaces, wherein for roughness measurement a probe tip made of diamond is moved at a constant speed over the surface of the sample.
  • the roughness measurement is based on the DIN 4762, 4768, 4772, 4775 and ISO 4288 standards.
  • the measuring profile results from the vertical positional shift of the probe tip, which is usually detected by an inductive distance measuring system.
  • the standardized roughness parameters such as the average roughness depth R Z and the arithmetic mean roughness R a , are obtained from the measurement profile.
  • DIN EN ISO 4287 is binding.
  • FIGS. 3 and 4 The details of the filter used, the evaluation length, the cut-off wavelength ⁇ C and the feed are to be taken.
  • M-Gesch twice the feed rate
  • the average roughness Rq contained at 0.16 ( Fig. 3 ) or 0.08 ⁇ m ( Fig. 4 ) lies.
  • the average roughness value Rq is the root mean square value of all profile values of the roughness profile.
  • FIG. 5 to 8 shown further embodiments of a cutting and scoring tool according to the invention show that this can be produced in a variety of forms.
  • the blade longitudinal sides 4 are formed asymmetrically and have two non-uniform cutting chamfers 3.
  • a cutting chamfer 3 which is curved over its entire length with a first radius of curvature R1 and passes over a second radius of curvature R2 in the wall portion 6, whose surface is parallel to the center plane XX of the blade 1.
  • Fig. 8 shows a cutting and scoring tool according to the invention, in which the cutting bevel 3 at least two continuously merging areas 3a, 3b, and that at least a first, arranged in the vicinity of the cutting edge 2 region 3a with - seen in cross section - convex curvature and at least one at the convex portion 3a subsequent second region 3b with - seen in cross-section - concave curvature.
  • the latter is located in the vicinity of the transition point of the cutting bevel 3 to the wall portion 6, whose surface is parallel to the center plane XX of the blade 1.
  • the cutting bevel 3 has - seen in cross section - at least partially an approximately S-shaped or inverted S-shaped contour.
  • the invention has hitherto not been limited to the feature combination defined in claim 1, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every individual feature of claim 1 can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claim 1 is to be understood only as a first formulation attempt for an invention.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP08162881A 2008-08-25 2008-08-25 Outil pour couper et entailler et son procédé de fabrication Withdrawn EP2159013A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08162881A EP2159013A1 (fr) 2008-08-25 2008-08-25 Outil pour couper et entailler et son procédé de fabrication
DE202009009301U DE202009009301U1 (de) 2008-08-25 2009-07-07 Schneid- und Ritzwerkzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08162881A EP2159013A1 (fr) 2008-08-25 2008-08-25 Outil pour couper et entailler et son procédé de fabrication

Publications (1)

Publication Number Publication Date
EP2159013A1 true EP2159013A1 (fr) 2010-03-03

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ID=39941814

Family Applications (1)

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EP08162881A Withdrawn EP2159013A1 (fr) 2008-08-25 2008-08-25 Outil pour couper et entailler et son procédé de fabrication

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EP (1) EP2159013A1 (fr)
DE (1) DE202009009301U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014050884A1 (fr) * 2012-09-28 2014-04-03 株式会社アライドマテリアル Lame coupante du type lame plate et lame coupante pour feuille crue
AT520930B1 (de) * 2018-06-29 2019-09-15 Voestalpine Prec Strip Gmbh Verfahren zur Herstellung eines Bandstahlmessers und Bandstahlmesser für Werkzeuge
DE102020120576A1 (de) * 2020-08-04 2022-02-10 Hauni Maschinenbau Gmbh Hartmetallmesser für Strangschnitt und Messerhalter

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2351762A1 (fr) * 1976-05-21 1977-12-16 Bueche Jean Louis Lame de massicot et son procede d'affutage
WO1983000112A1 (fr) * 1981-07-10 1983-01-20 Gebuhr, Mogens Appareil de poinçonnage, en particulier pour poinçonner des etiquettes et autres articles imprimes
EP0110685B1 (fr) 1982-11-30 1987-08-12 Beta Phase Inc. Dispositif à régulation de débit intraveineux employant un élément à mémoire de forme pour le contrôle de l'écoulement
EP0234009A1 (fr) * 1986-02-27 1987-09-02 Essmann & Schaefer GmbH & Co. KG Procédé pour la fabrication d'un outil de coupe et de rentrage
DE29616585U1 (de) * 1996-09-24 1998-01-29 Essmann & Schaefer GmbH & Co. KG, 42369 Wuppertal Schneid- und Ritzwerkzeug
JP2000117699A (ja) * 1998-10-09 2000-04-25 Mitsubishi Materials Corp ロータリーダイカッター
DE202007013402U1 (de) 2007-09-25 2007-12-06 Böhler-Uddeholm Precision Strip GmbH & Co. KG Schneidlinie
DE102007031904A1 (de) 2006-08-15 2008-02-21 Essmann & Schaefer Gmbh & Co. Kg Schneid- und/oder Ritzwerkzeug

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2351762A1 (fr) * 1976-05-21 1977-12-16 Bueche Jean Louis Lame de massicot et son procede d'affutage
WO1983000112A1 (fr) * 1981-07-10 1983-01-20 Gebuhr, Mogens Appareil de poinçonnage, en particulier pour poinçonner des etiquettes et autres articles imprimes
EP0110685B1 (fr) 1982-11-30 1987-08-12 Beta Phase Inc. Dispositif à régulation de débit intraveineux employant un élément à mémoire de forme pour le contrôle de l'écoulement
EP0234009A1 (fr) * 1986-02-27 1987-09-02 Essmann & Schaefer GmbH & Co. KG Procédé pour la fabrication d'un outil de coupe et de rentrage
EP0234009B2 (fr) 1986-02-27 1994-08-24 Essmann & Schaefer GmbH & Co. KG Procédé pour la fabrication d'un outil de coupe et de rentrage
DE29616585U1 (de) * 1996-09-24 1998-01-29 Essmann & Schaefer GmbH & Co. KG, 42369 Wuppertal Schneid- und Ritzwerkzeug
DE19741089A1 (de) 1996-09-24 1998-04-02 Essmann & Schaefer Schneid- und Ritzwerkzeug
JP2000117699A (ja) * 1998-10-09 2000-04-25 Mitsubishi Materials Corp ロータリーダイカッター
DE102007031904A1 (de) 2006-08-15 2008-02-21 Essmann & Schaefer Gmbh & Co. Kg Schneid- und/oder Ritzwerkzeug
DE202007013402U1 (de) 2007-09-25 2007-12-06 Böhler-Uddeholm Precision Strip GmbH & Co. KG Schneidlinie

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Publication number Publication date
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