EP0413322B1 - Kreis-oder bogenförmiges Maschinenmesser - Google Patents

Kreis-oder bogenförmiges Maschinenmesser Download PDF

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Publication number
EP0413322B1
EP0413322B1 EP90115618A EP90115618A EP0413322B1 EP 0413322 B1 EP0413322 B1 EP 0413322B1 EP 90115618 A EP90115618 A EP 90115618A EP 90115618 A EP90115618 A EP 90115618A EP 0413322 B1 EP0413322 B1 EP 0413322B1
Authority
EP
European Patent Office
Prior art keywords
cutting
tooth
obliquely
cutting edge
machine blade
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
EP90115618A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0413322A1 (de
Inventor
Karl Heinz Balke
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.)
BALKE, AXEL
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 AT90115618T priority Critical patent/ATE86908T1/de
Publication of EP0413322A1 publication Critical patent/EP0413322A1/de
Application granted granted Critical
Publication of EP0413322B1 publication Critical patent/EP0413322B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B26D2001/0046—Cutting members therefor rotating continuously about an axis perpendicular to the edge
    • 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
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations

Definitions

  • the invention relates to a circular or arc-shaped machine knife which has a plurality of cutting teeth with concave cutting edges and tooth gaps therebetween, each tooth gap bottom ending in opposite tooth flanks.
  • Such a machine knife is used in particular for cutting bread with a firm rind. It depends on a smooth cut of the material to be cut and a long service life, within which the machine knife does not need to be reground.
  • a machine knife of the type mentioned is known from DE-C-23 31 806.
  • the tooth flanks of each cutting tooth are of different lengths, so that the tooth flank of each cutting tooth, which is at the front in the cutting direction, is shorter than the other tooth flank. Due to this construction, when the machine knife rotates, the part of the concave cutting edge of the cutting tooth lying in front of the rear tooth flank contributes to cutting the material to be cut. As a result, the sharpness of the cutting teeth is retained for a relatively long time.
  • the cutting quality of the known machine knife is adversely affected by the fact that the radially protruding tips of the knife, which are formed by the tooth flanks of the cutting teeth located at the back, are at a large distance from one another.
  • the invention has for its object to provide a machine knife of the type mentioned with an improved cutting quality.
  • the object is achieved in that the tooth flanks of each cutting tooth are approximately the same length and the tooth flank of the front of each cutting tooth is sharpened obliquely.
  • the radially protruding tips of the cutting teeth are relatively close together, which increases the cutting quality.
  • a rapid dulling of the tooth flank lying at the front in the cutting direction is avoided in that it is sharpened at an angle.
  • the obliquely sharpened area of the tooth flank forms a cutting edge, which contributes to cutting the material to be cut. In this way, even with a high contact pressure, as e.g. penetration of the cutting teeth into the firm rind of a bread is required, a relatively long service life and optimal cutting quality.
  • the obliquely sharpened area of the tooth flank can vary depending on Be trained appropriately.
  • it can have a straight cutting edge.
  • the angle between the straight cutting edge and the radial direction is preferably chosen between 45 ° and 60 °.
  • the cutting edge In order to make better use of the cutting edge, in particular for cutting a solid material to be cut, it can also be made concave. In the concave design, the lengths of the cutting edges are increased, which improves the smooth cut even more. The teeth formed at the ends of the cutting edge are more pronounced, so that the cutting teeth can penetrate even better into a solid material to be cut.
  • the obliquely sharpened area of the tooth flank can also have a toothed cutting edge.
  • the toothing is particularly advantageous when a high contact pressure is required for cutting.
  • the machine knife shown in FIG. 1 is designed in an arc shape and has a large number of cutting teeth 1 with concave cutting edges 2 and tooth gaps 3 lying between them.
  • the cutting edges 2, as indicated in FIG. 1, are toothed.
  • the tooth gaps 3 are concave.
  • Each tooth space base 4 ends in opposite tooth flanks 5 and 6.
  • the tooth flanks 5 and 6 of each cutting tooth 1 are approximately of the same length, the tooth flank 5 of each cutting tooth 1 lying at the front in the cutting direction being sharpened obliquely.
  • the obliquely sharpened area of the tooth flank 5 has a straight cutting edge 7.
  • the cutting edge 7 is made by grinding on one side.
  • the angle between the straight cutting edge 7 and the radial direction is approximately 50 °.
  • Fig. 2 shows on an enlarged scale another embodiment of a cutting tooth 1 'of the cutting knife.
  • the obliquely sharpened area of the tooth flank 5 'of this embodiment has a concave cutting edge 7'.
  • the cutting edge 7 ' is, as indicated in Fig. 2, toothed.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Knives (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Surgical Instruments (AREA)
EP90115618A 1989-08-18 1990-08-16 Kreis-oder bogenförmiges Maschinenmesser Expired - Lifetime EP0413322B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90115618T ATE86908T1 (de) 1989-08-18 1990-08-16 Kreis-oder bogenfoermiges maschinenmesser.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3927262A DE3927262A1 (de) 1989-08-18 1989-08-18 Kreis- oder bogenfoermiges maschinenmesser
DE3927262 1989-08-18

Publications (2)

Publication Number Publication Date
EP0413322A1 EP0413322A1 (de) 1991-02-20
EP0413322B1 true EP0413322B1 (de) 1993-03-17

Family

ID=6387352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90115618A Expired - Lifetime EP0413322B1 (de) 1989-08-18 1990-08-16 Kreis-oder bogenförmiges Maschinenmesser

Country Status (4)

Country Link
EP (1) EP0413322B1 (enrdf_load_stackoverflow)
AT (1) ATE86908T1 (enrdf_load_stackoverflow)
DE (2) DE3927262A1 (enrdf_load_stackoverflow)
DK (1) DK0413322T3 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4117229C2 (de) * 1991-05-27 1994-06-09 Axel Balke Gerät zum Zerlegen und Zerwirken von Schlachtgut
DE4341398C1 (de) * 1993-12-04 1995-03-30 Axel Balke Messer zum Zerlegen und Zerwirken insbesondere von Schlachtgut
CN103624856A (zh) * 2013-12-18 2014-03-12 蓝帜（南京）工具有限公司 用于木质、塑料板材内凹廓型加工的刮刀
DE102019201519A1 (de) * 2019-02-06 2020-08-06 Hagedorn Spiralmesser GmbH Verzahntes Schneidmesser

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2260134C2 (de) * 1972-12-08 1984-05-10 Karl Heinz 5650 Solingen Balke Kreis- oder bogenförmig gestaltetes Maschinenmesser zum Schneiden insbesondere von Brot mit fester Rinde
FI56636C (fi) * 1977-06-21 1980-03-10 Paraisten Kalkki Oy Dammfri skaerning av en roerlig mineralullsbana

Also Published As

Publication number Publication date
DE59001038D1 (de) 1993-04-22
DK0413322T3 (da) 1993-07-26
DE3927262A1 (de) 1991-02-21
EP0413322A1 (de) 1991-02-20
DE3927262C2 (enrdf_load_stackoverflow) 1992-12-17
ATE86908T1 (de) 1993-04-15

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