EP0288024A2 - Lame pour cutter - Google Patents
Lame pour cutter Download PDFInfo
- Publication number
- EP0288024A2 EP0288024A2 EP88106287A EP88106287A EP0288024A2 EP 0288024 A2 EP0288024 A2 EP 0288024A2 EP 88106287 A EP88106287 A EP 88106287A EP 88106287 A EP88106287 A EP 88106287A EP 0288024 A2 EP0288024 A2 EP 0288024A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- radius
- cutting
- cutting edge
- knife
- approximately
- 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.)
- Granted
Links
Images
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
- a cutter knife according to the preamble of claim 1 is known from DE-AS 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-GM 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-GM 73 42 583) and the cutting angle gradually increases 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 knife according to the preamble of claim 1 such that it can be ground by machine. This object is achieved by the characterizing features of claim 1. Due to the circular arc-shaped cutting edge, the knife can be sharpened or re-sharpened on an automatic grinding machine, which considerably reduces the cost of the sleep.
- the embodiment according to claim 2 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 3 has proven to be favorable.
- the embodiment according to claim 4 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 exemplary embodiments according to FIGS. 1 and 2 have the same semicircular clamping section 1 with a central bore 2 and two centering bores 3 for plugging onto centering bolts which are pressed into a spacer ring which is non-rotatably fitted on a knife shaft.
- a total of twelve regularly spaced bolts are pressed into the spacer ring on a common pitch circle, so that the knife can be placed on the spacer ring offset in steps of 30 °.
- through bores 4 with a somewhat larger diameter are arranged in the clamping section 1 of the knife on the same pitch circle diameter.
- the two knives clamped in the same knife plane in the knife head 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 Mess 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 district 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.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Knives (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Processing Of Meat And Fish (AREA)
- Nonmetal Cutting Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
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 |
---|---|---|---|
CH1588/87A CH673236A5 (fr) | 1987-04-24 | 1987-04-24 | |
CH1588/87 | 1987-04-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0288024A2 true EP0288024A2 (fr) | 1988-10-26 |
EP0288024A3 EP0288024A3 (en) | 1989-03-22 |
EP0288024B1 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) |
Cited By (3)
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 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Citations (4)
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 |
FR2197655A1 (fr) * | 1972-08-31 | 1974-03-29 | Tecned Ag | |
DE3044632A1 (de) * | 1980-11-27 | 1982-06-03 | Fritz 7981 Vogt Knecht | Messerkopf fuer fleischkutter |
-
1987
- 1987-04-24 CH CH1588/87A patent/CH673236A5/de not_active IP Right Cessation
-
1988
- 1988-04-20 EP EP88106287A patent/EP0288024B1/fr not_active Expired - Lifetime
- 1988-04-20 AT AT88106287T patent/ATE87505T1/de not_active IP Right Cessation
- 1988-04-20 DE DE8888106287T patent/DE3879743D1/de not_active Expired - Fee Related
Patent Citations (4)
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 |
FR2197655A1 (fr) * | 1972-08-31 | 1974-03-29 | Tecned Ag | |
DE3044632A1 (de) * | 1980-11-27 | 1982-06-03 | Fritz 7981 Vogt Knecht | Messerkopf fuer fleischkutter |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4015843A1 (de) * | 1990-05-17 | 1991-11-21 | Knecht Gmbh Maschbau | Kuttermesser |
US5345848A (en) * | 1990-05-17 | 1994-09-13 | Knecht Maschinenbau Gmbh | Cutter |
GB2346116A (en) * | 1999-01-30 | 2000-08-02 | John Robert French | Rotary cutter for mine clearance |
US6481326B2 (en) | 1999-01-30 | 2002-11-19 | J R French Limited | Cutting assembly and related apparatuses |
GB2355907A (en) * | 1999-11-02 | 2001-05-09 | J R French Ltd | A blade for digging assembly, and related apparatuses |
WO2001033158A2 (fr) * | 1999-11-02 | 2001-05-10 | J R French Limited | Lame pour ensemble d'excavation et appareils correspondants |
WO2001033158A3 (fr) * | 1999-11-02 | 2001-09-20 | J R French Ltd | Lame pour ensemble d'excavation et appareils correspondants |
AU768900B2 (en) * | 1999-11-02 | 2004-01-08 | Jr French Limited | Blades for digging assemblies, related apparatuses and methods for use thereof |
Also Published As
Publication number | Publication date |
---|---|
EP0288024A3 (en) | 1989-03-22 |
ATE87505T1 (de) | 1993-04-15 |
DE3879743D1 (de) | 1993-05-06 |
EP0288024B1 (fr) | 1993-03-31 |
CH673236A5 (fr) | 1990-02-28 |
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