DE2740981B2 - Punching knife - Google Patents
Punching knifeInfo
- Publication number
- DE2740981B2 DE2740981B2 DE19772740981 DE2740981A DE2740981B2 DE 2740981 B2 DE2740981 B2 DE 2740981B2 DE 19772740981 DE19772740981 DE 19772740981 DE 2740981 A DE2740981 A DE 2740981A DE 2740981 B2 DE2740981 B2 DE 2740981B2
- Authority
- DE
- Germany
- Prior art keywords
- body part
- knife body
- knife
- cutting part
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B5/00—Clicking, perforating, or cutting leather
- C14B5/02—Stamps or dies for leather articles
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D8/00—Machines for cutting, ornamenting, marking or otherwise working up shoe part blanks
- A43D8/02—Cutting-out
- A43D8/04—Stamping-out
- A43D8/06—Dies therefor
-
- 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
- B26F1/46—Loose press knives
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Knives (AREA)
Description
Die Erfindung betrifft ein Stanzmesser, insbesondere zum Herausstanzen von Schuhsohlen, mit zylindrischen Seitenflächen und aus einem Schneidenteil und einem denselben umgebenden Messerkörperteil zusammengesetzt ist, wobei der Schneidenteil in einer Richtung mit seiner Schneide gegenüber dem Messerkörperteil hervorragt sowie ein Verfahren zur Herstellung des ersteren.The invention relates to a punching knife, in particular for punching out shoe soles, with cylindrical Side surfaces and composed of a cutting part and a knife body part surrounding the same is, wherein the cutting part in one direction with its cutting edge opposite the knife body part and a method for producing the former.
Es sind aus warmgewalztem Profilstahl durch Schmieden oder Kaltbiegen hergestellte Stanzmesser bekannt. Bei der Herstellung solcher Stanzmesser ist es nach dem Schmiede- bzw. Kaltbiegevorgang nötig, diese einer spanabhebenden Bearbeitung zu unterziehen, um die Messerschneide zu erhalten und die gewünschte Messerhöhe zu erzielen. Danach müssen die betreffenden Stanzmesser einer Wärmebehandlung unterzogen werden. Sodann ist meistens ein sehr aufwendiger Richtvorgang notwendig, damit die durch eine Schablone festgelegte Messerform erhalten wird. Arbeitszeit — und Kostenaufwand für die Herstellung eines Stanzmessers der eben beschriebenen Art sind daher beträchtlich.They are punching knives made from hot-rolled profile steel by forging or cold bending known. In the manufacture of such punching knives, after the forging or cold bending process, it is necessary to to subject this to a machining process in order to obtain the knife edge and the to achieve the desired knife height. After that, the punching knives concerned have to undergo a heat treatment be subjected. Then a very complex straightening process is usually necessary so that the through a template specified knife shape is obtained. Labor time - and cost of manufacturing a punch knife of the type just described are therefore considerable.
Der Erfindung liegt die Aufgabe zugrunde, die vorstehend angeführten Nachteile zu vermeiden und ein besonders leicht herstellbares, sich selbst entleerendes Stanzmesser zu schaffen, bei dem nach einem Kaltbiegevorgang weder eine Wärmebehandlung, nochThe invention is based on the object of avoiding the above-mentioned disadvantages and a to create a self-emptying punch knife that is particularly easy to manufacture, in which, after a Cold bending process neither a heat treatment nor
ίο ein Richtvorgang erforderlich istίο a straightening process is required
Erfindungsgemäß wird dies bei einem Stanzmesser der eingangs genannten Art dadurch erreicht, daß der Messerkörperteil in der anderen Richtung gegenüber dem Schneidenteil vorsteht und daß der Messerkörperteil und der Schneidenteil in dessen neutralen Faser durch punktförmige Außenschweißungen jeweils im Abstand von etwa 20 bis 40 mm miteinander verbunden und zwischen denselben punktförmige Innenschweißungen angebracht sind.According to the invention this is achieved in a punching knife of the type mentioned in that the Knife body part protrudes in the other direction with respect to the cutting part and that the knife body part and the cutting part in its neutral fiber by punctiform external welds in each case Distance of about 20 to 40 mm connected to each other and between the same punctiform internal welds are attached.
Im folgenden wird die Erfindung im einzelnen in einem Ausführungsbeispiel erläutert, das durch die Zeichnung in schematischer Darstellung veranschaulicht ist. Die Zeichnung zeigt einen Querschnitt eines sich selbst entleerenden Stanzmessers zum Herausstanzen von Schuhsohlen. Dieses Stanzmesser ist aus einem Schneidenteil 1 und einem denselben umgebenden Messerkörperteil 2 zusammengesetzt. Der Schneidenteil 1 ragt in einer Richtung mit seiner Schneide 1' gegenüber dem Messerkörperteil 2 hervor. In derIn the following the invention will be explained in detail in an embodiment that is characterized by the Drawing is illustrated in a schematic representation. The drawing shows a cross section of a self-emptying punch knife for punching out shoe soles. This punch knife is made of one Cutting part 1 and a knife body part 2 surrounding the same assembled. The cutting part 1 protrudes in one direction with its cutting edge 1 ′ in relation to the knife body part 2. In the
)<) anderen Richtung steht jedoch der Messerkörperteil' 2 gegenüber dem Schneidenteil 1 vor. Der Messerkörperteil 2 besteht aus einem Stahl mit einer Festigkeit zwischen 30 und 90 kp/mm2 und wurde aus Stabstahl mit einer normalen Kaltbiegemaschine auf die gewünschte) <) in the other direction, however, the knife body part '2 is in front of the cutting part 1. The knife body part 2 consists of a steel with a strength between 30 and 90 kp / mm 2 and was made of bar steel with a normal cold bending machine to the desired
f> Form gebogen. Der Schneidenteil 1 besteht aus einem Stahl mit einer Körperhärte zwischen 40 und 50 HRc und wurde ebenfalls aus Stabstahl mit einer normalen Kaltbiegemaschine, und zwar im harten Zustand auf die betreffende Form gebogen. Der Schneidenteil 1 und derf> curved shape. The cutting part 1 consists of one Steel with a body hardness between 40 and 50 HRc and was also made from steel bars with a normal Cold bending machine, bent to the relevant shape in the hard state. The cutting part 1 and the
■»<> Messerkörperteil 2 wurden nach dem Biegen auf die gewünschte Form mittels einer Schweißvorrichtung so zusammengehalten, daß die verlangte Messerhöhe exakt erzielt werden konnte. Sodann wurde der Messerkörperteil 2 mit dem Schneidenteil 1 in dessen neutraler Faser durch punktförmige Außenschweißungen 3 jeweils im Abstand von etwa 20 bis 40 mm miteinander verbunden. (Diese Schweißungen erfolgten genau in der neutralen Faser des Schneidenteiles 1, um jeden Verzug desselben zu vermeiden.) Die Wärmeein-■ »<> Knife body part 2 were after bending on the desired shape held together by means of a welding device so that the required knife height could be achieved exactly. Then the knife body part 2 with the cutting part 1 in its neutral fiber through punctiform external welds 3, each at a distance of about 20 to 40 mm connected with each other. (These welds were made exactly in the neutral fiber of the cutting part 1, um to avoid any distortion of the same.) The heat input
^0 wirkung durch das Schweißen veränderte den Schneidenteil 1 nur geringfügig, da der Hauptteil der beim punktförmigen Verschweißen entstandenen Wärme sehr rasch in den verhältnismäßig starken Messerkörperteil 2 abfloß. Gleichzeitig mit den punktförmigen^ 0 effectively by welding changed the cutting part 1 only slightly, since the major part of the heat produced during the point-shaped welding flowed very rapidly in the relatively strong knife blade body portion. 2 Simultaneously with the punctiform
v' Außenschweißungen 3 wurden zwischen deren Stellen punktförmige Innenschweißungen 4 in der von dem Messerkörperteil 2 und dem Schneidenteil 1 gebildeten Ecke durchgeführt. Das in der eben beschriebenen Weise erzeugte Stanzmesser ist somit ohne spanabhebender Bearbeitung und ohne Wärmebehandlung hergestellt. v ' External welds 3 were carried out between their points in the form of punctiform internal welds 4 in the corner formed by the knife body part 2 and the cutting edge part 1. The punch knife produced in the manner just described is thus produced without machining and without heat treatment.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772740981 DE2740981B2 (en) | 1977-09-12 | 1977-09-12 | Punching knife |
AT643278A AT370300B (en) | 1977-09-12 | 1978-09-06 | PUNCHING KNIFE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772740981 DE2740981B2 (en) | 1977-09-12 | 1977-09-12 | Punching knife |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2740981A1 DE2740981A1 (en) | 1979-03-15 |
DE2740981B2 true DE2740981B2 (en) | 1980-08-07 |
Family
ID=6018723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772740981 Ceased DE2740981B2 (en) | 1977-09-12 | 1977-09-12 | Punching knife |
Country Status (2)
Country | Link |
---|---|
AT (1) | AT370300B (en) |
DE (1) | DE2740981B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0207071A1 (en) * | 1985-06-27 | 1986-12-30 | BÖHLER Gesellschaft m.b.H. | Machine knife and process for its manufacture |
DE4110039A1 (en) * | 1991-03-27 | 1992-10-01 | Wilhelm Aichele | Cut=off knife for stacks of paper, plastics, metal sheets, etc. - has blade of parallelogram section provided with two cutting edges that can be transposed by turning blade over |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0099004B1 (en) * | 1982-07-02 | 1986-05-28 | Stanzmesserfabrik Küsnacht AG | Cutting die, in particular for contour-cutting, and a method of manufacturing it |
FR2611572B1 (en) * | 1987-02-25 | 1995-04-28 | Septi Sarl | STEEL PROFILE THAT CAN BE LAMINATED OR CONTINUOUS PRESS FOR PRODUCING INDUSTRIAL PUNCHES |
AT409494B (en) * | 1996-08-30 | 2002-08-26 | Boehler Ybbstal Band Gmbh & Co | Stamping-out tool for e.g. leather soles, comprises carrier strip recessed to accommodate cutter strip held at spaced weld points, and bodily bend to shape |
CN112296618A (en) * | 2020-09-16 | 2021-02-02 | 南通西土瓦工贸有限公司 | Manufacturing process of cutting die |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB803761A (en) * | 1956-04-06 | 1958-10-29 | British United Shoe Machinery | Improvements in or relating to press knives suitable for cutting leather or similar sheet materials |
DE1989425U (en) * | 1968-02-08 | 1968-07-18 | Chrobok Hoffmann K G | PUNCH KNIFE WITH A CLOSED EDGE. |
DE1778700A1 (en) * | 1968-05-24 | 1971-08-19 | Wilhelm Weller Moebelfabrik | Device for attaching shelves in closets and the like. |
DE2142234A1 (en) * | 1971-08-24 | 1973-03-22 | Fauth Fa Emil | PUNCHING TOOL |
DE7132214U (en) * | 1971-08-24 | 1971-12-09 | Fauth E | PUNCHING TOOL |
DE2318384A1 (en) * | 1973-03-20 | 1974-10-03 | Boehler & Co Ag Geb | PROFILE STEEL FOR THE MANUFACTURE OF CUTTING AND PUNCHING TOOLS |
-
1977
- 1977-09-12 DE DE19772740981 patent/DE2740981B2/en not_active Ceased
-
1978
- 1978-09-06 AT AT643278A patent/AT370300B/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0207071A1 (en) * | 1985-06-27 | 1986-12-30 | BÖHLER Gesellschaft m.b.H. | Machine knife and process for its manufacture |
DE4110039A1 (en) * | 1991-03-27 | 1992-10-01 | Wilhelm Aichele | Cut=off knife for stacks of paper, plastics, metal sheets, etc. - has blade of parallelogram section provided with two cutting edges that can be transposed by turning blade over |
Also Published As
Publication number | Publication date |
---|---|
DE2740981A1 (en) | 1979-03-15 |
AT370300B (en) | 1983-03-10 |
ATA643278A (en) | 1982-08-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAP | Request for examination filed | ||
OD | Request for examination | ||
8235 | Patent refused |