AT116349B - Process for the production of bell knives for leather sharpening machines. - Google Patents

Process for the production of bell knives for leather sharpening machines.

Info

Publication number
AT116349B
AT116349B AT116349DA AT116349B AT 116349 B AT116349 B AT 116349B AT 116349D A AT116349D A AT 116349DA AT 116349 B AT116349 B AT 116349B
Authority
AT
Austria
Prior art keywords
knife
bell
knives
production
sharpening machines
Prior art date
Application number
Other languages
German (de)
Original Assignee
Fortuna Werke Spezialmaschinen
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 Fortuna Werke Spezialmaschinen filed Critical Fortuna Werke Spezialmaschinen
Application granted granted Critical
Publication of AT116349B publication Critical patent/AT116349B/en

Links

Landscapes

  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von Glockenmessern für Lederschärfmaschinen. 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 tretenden Spannungen in der gewünschten Weise verringert. 



   Als besonders günstige Neigung der Kegelstumpfmantelfläche gegen die Messerdrehachse haben sich Winkel zwischen 40 und   60 ,   je nach den Eigenschaften des verwendeten Messerstahles, ergeben. 



   Die Ausbildung des Messerbodens in der erläuterten Weise bringt noch eine wesentliche Erhöhung der Starrheit des Messers mit sich, ferner weitere Materialersparnis dadurch, dass sieh das Messer mehr als bei der bisher begräuchlichen Form dem Profil der Vorschubwalze in der Schärfmaschine anpasst, was für spine restlose Ausnutzung von Wichtigkeit ist. 



   Fig. 2 der Zeichnung lässt die charakteristische Form des Messers gemäss den vorstehenden Er-   läuterungen deutlich erkennen   ; insbesondere ist auch durch Einzeichnung der Umrisse einer Vorschubwalze in ihrer Arbeitsstellung innerhalb eines stark abgenutzten Messers der zuletzt erwähnte Vorteil der neuen   Messerform   erkennbar gemacht. 
 EMI2.2 
 



   2. Verfahren zur Herstellung von Glockenmessern nach Anspruc 1, dadurch gekennzeichnet, dass die zur Bildung des zylindrischen Messermantels dienenden Teile der Scheiben in Anpassung an die endglltige Messerform auf eine geringe Stärke ausgezogen und die zur Bildung des   Messerbodens dienenden   Teile   der-Spheiben unter Belassung   ihrer   ursprünglichen   Dicke und einer zur Messerdrehachse senkrechten ebenen Fläche, mit der das Messer auf der Messerwelle der Schärfmaschine befestigt wird, in die Form einer   Eegelstumpfmantelfläche gebracht werden,   mittels welcher der zwischen Boden und   Mantelfläche   des Messers zu bildende Winkel von 90  durch Bildung zweier Biegestellen erzeugt wird. 
 EMI2.3 




   <Desc / Clms Page number 1>
 



  Process for the production of bell knives for leather sharpening machines.
 EMI1.1
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 occurring tensions are reduced in the desired way.



   An angle between 40 and 60, depending on the properties of the knife steel used, has been found to be a particularly favorable inclination of the truncated cone surface against the axis of rotation of the knife.



   The formation of the knife base in the manner described brings with it a significant increase in the rigidity of the knife, furthermore material savings because the knife adapts to the profile of the feed roller in the sharpening machine more than in the previously common shape, which means complete utilization of spine is of importance.



   FIG. 2 of the drawing clearly shows the characteristic shape of the knife according to the above explanations; in particular, by drawing the outlines of a feed roller in its working position within a heavily worn knife, the last-mentioned advantage of the new knife shape is made recognizable.
 EMI2.2
 



   2. A method for the production of bell knives according to claim 1, characterized in that the parts of the discs serving to form the cylindrical knife jacket are pulled out to a small thickness in adaptation to the final knife shape and the parts of the discs serving to form the knife base are left with their original thickness and a flat surface perpendicular to the knife axis of rotation, with which the knife is attached to the knife shaft of the sharpening machine, can be brought into the shape of a truncated cone surface, by means of which the angle of 90 to be formed between the bottom and the surface of the knife is created by forming two bending points .
 EMI2.3


 

Claims (1)

EMI2.4 EMI2.4
AT116349D 1928-12-21 1928-12-21 Process for the production of bell knives for leather sharpening machines. AT116349B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT116349T 1928-12-21

Publications (1)

Publication Number Publication Date
AT116349B true AT116349B (en) 1930-02-10

Family

ID=3629825

Family Applications (1)

Application Number Title Priority Date Filing Date
AT116349D AT116349B (en) 1928-12-21 1928-12-21 Process for the production of bell knives for leather sharpening machines.

Country Status (1)

Country Link
AT (1) AT116349B (en)

Similar Documents

Publication Publication Date Title
AT116349B (en) Process for the production of bell knives for leather sharpening machines.
DE2152622A1 (en) PUNCH KNIFE WITH SERRATED CUTTING EDGE
DE69201465T2 (en) Process and stamp for deep drawing containers with regular walls.
DE501716C (en) Process for the production of bell knives for leather sharpening machines
AT112468B (en) Conical press roller, especially for stacks of green forage.
AT149972B (en) Process for the production of wires u. Like. By cold deformation of iron or steel alloys.
AT93447B (en) Process for the manufacture of turbine blades.
DE736517C (en) Method of pressing patternless knife blades
AT110238B (en) Method and device for the production of single-walled or multi-walled hollow metal bodies provided with bottoms.
AT225497B (en) Process for the production of twisted reinforcing steel
AT60629B (en) Process for rolling out I and U iron with parallel flanges in universal rolling mills with bending of the flanges.
DE498776C (en) Process for producing the free cut of taps
AT108250B (en) Process for the production of wire nails, bolts, rivets and the like like
AT120000B (en) Machine for skimming bacon.
AT98046B (en) Process for the production of very hard, but ductile and break-resistant tools.
AT80244B (en) Method and device for pressing crankshaftsMethod and device for pressing crankshafts. ll.
DE606854C (en) Process for processing aluminum sheet into decorative and useful objects
DE28845C (en) Fixing the Dutch knife
AT209472B (en) Process for producing profiled leather straps and profiling sleeve for carrying out the same
AT54827B (en) Punching knife made of strip steel for presses with sideways moving press link.
AT200891B (en) Process for the production of high-speed steel composite tools
AT135824B (en) Method and pressing tool for bending sheet metal strips in arches and troughs, in particular for the production of manure protection sheets, spare wheel covers and the like. Like. For motor vehicles.
AT67804B (en) Device for forming the sewing lip on soles and the like. And for producing welts.
DE540528C (en) Use of nitrogen-hardened steel for extrusion
US2113142A (en) Method for the production of grinding rings and grinding cylinders from emery and a binding medium of raw rubber