EP0288024B1 - Lame pour cutter - Google Patents

Lame pour cutter Download PDF

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Publication number
EP0288024B1
EP0288024B1 EP88106287A EP88106287A EP0288024B1 EP 0288024 B1 EP0288024 B1 EP 0288024B1 EP 88106287 A EP88106287 A EP 88106287A EP 88106287 A EP88106287 A EP 88106287A EP 0288024 B1 EP0288024 B1 EP 0288024B1
Authority
EP
European Patent Office
Prior art keywords
radius
cutter
knife
cutting edge
cutting
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.)
Expired - Lifetime
Application number
EP88106287A
Other languages
German (de)
English (en)
Other versions
EP0288024A2 (fr
EP0288024A3 (en
Inventor
Hans Wälchli
Walter Schmidt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88106287T priority Critical patent/ATE87505T1/de
Publication of EP0288024A2 publication Critical patent/EP0288024A2/fr
Publication of EP0288024A3 publication Critical patent/EP0288024A3/de
Application granted granted Critical
Publication of EP0288024B1 publication Critical patent/EP0288024B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C18/20—Sickle-shaped knives

Definitions

  • the invention relates to a cutter according to the preamble of claim 1. Furthermore, the invention relates to a cutter knife for such a cutter.
  • a cutter knife and its attachment to a cutter is known.
  • This cutter knife is provided with pressed-in retaining bolts.
  • Holding disks are provided on the cutter shaft of the cutter, which have bores for receiving these retaining bolts. This means that all holes in the holding disks must be made with high precision to accommodate the bolts in order to hold the knife securely in all positions.
  • a cutter knife is also known from DE-A-1 132 823. With this knife, the cutting edge has a decreasing radius of curvature towards the outside.
  • cutter knives in which the cutting edge is either involute (e.g. DE-U-74 13 355) so that the cutting angle is constant over the cutting radius, or in which the cutting edge forms a rounded polygon (e.g. DE-U -73 42 583) and the cutting angle increases gradually with increasing cutting radius. All these knives have the disadvantage that they have to be sharpened by hand.
  • the present invention has for its object to develop a cutter according to the preamble of claim 1 such that the disadvantages mentioned are avoided and that the cutter knife can be ground.
  • This object is achieved by the characterizing features of claim 1. Due to the circular arc The cutting edge can be sharpened or re-sharpened on an automatic grinding machine, which considerably reduces the grinding costs.
  • the cutter knife for the cutter according to claim 1 is defined according to claim 2.
  • the embodiment of the cutter knife according to claim 3 is primarily for the use of the knife in the production of cooked sausage meat, e.g. suitable for Viennese.
  • Small cutting angles are generally used in this application in order to increase the emulsifying effect of the knife in the meat.
  • tests have shown that sufficient angles of emulsification can still be achieved with cutting angles between 50 ° and 60 °.
  • the main advantage of the enlarged cutting angle is that the cutting edge is longer and therefore the service life is longer.
  • the enlargement of the blade width to the values specified in claim 4 has proven to be favorable.
  • the embodiment of the cutter knife according to claim 5 is primarily for the production of raw sausage meat, e.g. suitable for salami. With this application, especially in the area of large cutting radii, a large cutting angle, i.e. a strong pulling cut, is desirable.
  • the two knives clamped in the knife head in the same knife plane form a gap of just a few tenths of a millimeter between them, so that the risk of contamination is low.
  • a crescent-shaped knife blade 5 projects from the clamping section 1 with an arcuate cutting edge 6.
  • the outer circumference with the knife radius R of the blade 5 is ground to form a relatively blunt emulsifying edge 7.
  • the emulsifying edge 7 is not reground.
  • the embodiment according to FIG. 1 is suitable for the production of sausage meat for cooked sausages.
  • the ratio of the radius of curvature A of the cutting edge 6 to the knife radius R is 0.79 and the ratio of the distance B of the center of curvature M of the cutting edge 6 from the knife axis 8 to the knife radius R is approximately 0.51.
  • the cutting angle ⁇ of the tangent 9 of the cutting edge 6 with the radial direction 10 is little dependent on the cutting radius r.
  • this dependence is shown in curve D as a function of the radius ratio r / R.
  • the cutting angle ⁇ fluctuates between 49 ° and 59 ° over the radius r.
  • the course of the ratio of the blade width C to the knife radius R over the cutting radius r is shown in FIG. 4. As the cutting radius r increases, it decreases continuously from a maximum value of approximately 0.45 for the minimum radius to a value of approximately 0.29 for the radius ratio from 0.8 to approximately 0.17 for the maximum radius R.
  • the embodiment according to FIG. 2 is suitable for the production of raw sausage meat.
  • the ratio of radius of curvature A 'to knife radius R is 0.565 and the ratio of the center of curvature distance B' to knife radius R is 0.48.
  • the course of the cutting angle ⁇ over the cutting radius r is shown in FIG. 3 as curve E.
  • the cutting angle ⁇ grows with increasing cutting radius r from approximately 35 ° for the minimum radius to approximately 75 ° for the maximum radius.
  • the knives shown are particularly suitable for use in a knife head with plastic spacer rings.
  • the centering bolts inserted into the rings in contrast to known spacer rings, are inserted approximately in the middle of the radial ring width in order to prevent the bolts from tearing out during operation.
  • the pitch circle radius 11 of the centering bores 3 and through bores 4 corresponds approximately to the mean value in the knife Inner radius 12 and outer radius 13 of the clamping section 1.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Knives (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing Of Meat And Fish (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Nonmetal Cutting Devices (AREA)

Claims (6)

  1. Hachoir contenant des couteaux qui présentent chacun une partie de serrage (1) configurée sous la forme d'un segment annulaire semi-circulaire avec une découpe centrale (2) en forme de demi-cercle et dotée de moyens de centrage disposés sur un arc de cercle commun, et qui présentent chacun une lame (5) en forme de faux raccordée sur la partie de serrage (1), le dispositif de coupe contenant également des disques de maintien des couteaux, pouvant être fixés à rotation entraînée sur l'arbre porte-lame du broyeur, caractérisé en ce que des boutons disposés à intervalles réguliers sur un arc de cercle commun sont fixés au disque de retenue, et en ce que deux alésages de centrage (3) sont prévus sur chaque couteau pour servir de moyen de centrage, le diamètre de ces alésages de centrage (3) correspondant en substance au diamètre des boutons, et en ce que plusieurs alésages de passage (4) de diamètre supérieur à celui des boutons sont disposés à écartement mutuel et à même distance des alésages de centrage (3) sur l'arc de cercle, et en ce que la lame (5) présente un tranchant (6) affûté en forme d'arc de cercle.
  2. Couteau pour broyeur, convenant à un broyeur selon la revendication 1, qui présente, fixé à rotation entraînée sur l'arbre porte-couteau du dispositif de coupe des disques de maintien des couteaux, des boutons disposés à intervalles réguliers sur un arc de cercle commun étant fixés au disque de retenue, chacun de ces couteaux présentant une partie de serrage (1) configurée sous la forme d'un segment annulaire semi-circulaire avec une découpe centrale (2) en forme de demi-cercle et dotée de moyens de centrage disposés sur un arc de cercle commun, chacun de ces couteaux présentant une lame (5) en forme de faux raccordée sur la partie de serrage (1), caractérisé en ce que deux alésages de centrage (3) sont prévus sur chaque couteau pour servir de moyen de centrage, le diamètre de ces alésages de centrage (3) correspondant en substance au diamètre des boutons, et en ce que plusieurs alésages de passage (4) de diamètre supérieur à celui des boutons sont disposés à écartement mutuel et à même distance des alésages de centrage (3) sur l'arc de cercle, et en ce que la lame (5) présente un tranchant (6) affûté en forme d'arc de cercle.
  3. Couteau pour broyeur selon la revendication 2, caractérisé en ce que les rapports au rayon (R) du couteau du rayon de courbure (A) du tranchant (6) et de la distance (B) séparant le centre de courbure (M) du tranchant (6) et l'axe (8) du couteau sont choisis de telle sorte que l'angle de courbe (α) vaut environ 55° tout au long du tranchant (6).
  4. Broyeur selon la revendication 3, caractérisé en ce que lorsque le rayon (r) de coupe augmente, le rapport de la largeur (C) de la lame au rayon (R) du couteau diminue de manière permanente depuis une valeur maximale d'environ 0,45, lorsque le rayon est minimum, à une valeur d'environ 0,17, lorsque le rayon vaut le rayon maximum (R), en passant par une valeur d'environ 0,29 lorsque le rapport des rayons (r/R) est de 0,8.
  5. Broyeur selon la revendication 2, caractérisé en ce que les rapports au rayon (r) du couteau du rayon de courbure (A') du tranchant (6') et de la distance (B') du centre de courbure (M') du tranchant (6') à l'axe (8) du couteau sont choisis de telle sorte que lorsque le rayon de coupe augmente, l'angle de coupe (α) passe d'environ 35° lorsque le rayon est minimum à environ 75° lorsque le rayon est maximum.
  6. Broyeur selon l'une des revendications 2 à 5, caractérisé en ce que le rayon (11) de l'arc de cercle des alésages de centrage (3) vaut approximativement la valeur moyenne du rayon intérieur (12) et du rayon extérieur (13) de la partie de serrage.
EP88106287A 1987-04-24 1988-04-20 Lame pour cutter Expired - Lifetime EP0288024B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88106287T ATE87505T1 (de) 1987-04-24 1988-04-20 Kuttermesser.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1588/87 1987-04-24
CH1588/87A CH673236A5 (fr) 1987-04-24 1987-04-24

Publications (3)

Publication Number Publication Date
EP0288024A2 EP0288024A2 (fr) 1988-10-26
EP0288024A3 EP0288024A3 (en) 1989-03-22
EP0288024B1 true EP0288024B1 (fr) 1993-03-31

Family

ID=4213923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106287A Expired - Lifetime EP0288024B1 (fr) 1987-04-24 1988-04-20 Lame pour cutter

Country Status (4)

Country Link
EP (1) EP0288024B1 (fr)
AT (1) ATE87505T1 (fr)
CH (1) CH673236A5 (fr)
DE (1) DE3879743D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015843A1 (de) * 1990-05-17 1991-11-21 Knecht Gmbh Maschbau Kuttermesser
GB2346116A (en) 1999-01-30 2000-08-02 John Robert French Rotary cutter for mine clearance
GB2355907A (en) * 1999-11-02 2001-05-09 J R French Ltd A blade for digging assembly, and related apparatuses
EP2062646A3 (fr) 2007-11-21 2017-07-12 GW Steffens GmbH Couteau de découpe et tête porte-lame en étant pourvue
DE102007056124A1 (de) 2007-11-21 2009-05-28 G. Walter Steffens Gmbh & Co. Kg Kuttermesser und damit versehener Messerkopf

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH319208A (de) * 1954-01-19 1957-02-15 Meier Otto Fleischkutter
CH357997A (de) * 1957-05-13 1961-10-31 Giesser Walter Kuttermesser
CH565592A5 (fr) * 1972-08-31 1975-08-29 Tecmed Ag
DE3044632C2 (de) * 1980-11-27 1982-11-11 Fritz 7981 Vogt Knecht Messerkopf für Fleischkutter

Also Published As

Publication number Publication date
ATE87505T1 (de) 1993-04-15
EP0288024A2 (fr) 1988-10-26
CH673236A5 (fr) 1990-02-28
DE3879743D1 (de) 1993-05-06
EP0288024A3 (en) 1989-03-22

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