SE528625C2 - town Knife - Google Patents

town Knife

Info

Publication number
SE528625C2
SE528625C2 SE0401143A SE0401143A SE528625C2 SE 528625 C2 SE528625 C2 SE 528625C2 SE 0401143 A SE0401143 A SE 0401143A SE 0401143 A SE0401143 A SE 0401143A SE 528625 C2 SE528625 C2 SE 528625C2
Authority
SE
Sweden
Prior art keywords
knife
hardness
punching
width
edge
Prior art date
Application number
SE0401143A
Other languages
Swedish (sv)
Other versions
SE0401143D0 (en
SE0401143L (en
Inventor
Peter Marbach
Original Assignee
Marbach Karl Gmbh & Co Kg
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 Marbach Karl Gmbh & Co Kg filed Critical Marbach Karl Gmbh & Co Kg
Publication of SE0401143D0 publication Critical patent/SE0401143D0/en
Publication of SE0401143L publication Critical patent/SE0401143L/en
Publication of SE528625C2 publication Critical patent/SE528625C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
    • 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
    • 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
    • B26D2001/002—Materials or surface treatments therefor, e.g. composite materials
    • 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
    • B26F2001/4472—Cutting edge section features

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Knives (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Scissors And Nippers (AREA)

Abstract

The blade (10) is made of band-steel and has a pointed cutting edge (14) with a rounded tip (16) at its lower end and is also tapered at the opposite end (18) which is provided with a straight cutting edge (20). The rounded tip (16) is made of the hardest material, while the main body (12) is softer. The level of the hardness of the straight end (20) is located between the hardness of the rounded tip (16) and the body (12). The proportions of the areas (12, 16, 20) and their particular hardness protect the blade (10) from getting permanently deformed.

Description

528 625 2 vens skärkant uppnås en optimal snittkvalitet från stansnirxgsstarten. Dessutom kan stanskniven vid bearbetning och stansning utsättas för hög belastning utan att den under stanstrycket vid anslag mot en stansplatta av stål deformeras plastiskt på ett skadligt sätt. Den utj ämnbara höj ddifferensen är förvisso begränsad. 528 625 2 vein cutting edge achieves an optimal cut quality from the punch start. In addition, the punching knife can be subjected to a high load during machining and punching without it being plastically deformed in a harmful manner during the punching pressure when abutting against a steel punching plate. The compensable height difference is certainly limited.

Uppgiften som ligger till grund för den nya uppfinningen är att åstadkomma en stanskniv som kan utsättas för kraftig belastning och som har utmärkta bearbetningsegenskaper.The task on which the new invention is based is to provide a punching knife which can be subjected to heavy loads and which has excellent machining properties.

Denna uppgift löses genom en stanskrliv som har de kännetecknande särdragen enligt patentkrav 1. I En fördelaktig vidareutveckling av stanskniven enligt uppfinningen är föremål för patentkrav 2.This object is solved by a punching blade having the characteristic features according to claim 1. In an advantageous further development of the punching knife according to the invention is the subject of claim 2.

Genom kombinationen enligt uppfinningen av skärkanten och knivryggen uppnås de båda fördelarna, att dels höjddifferenser kan utj änmas och dels att eggen kan uppta högre belastningar. Dessutom har det även överraskande visat sig att detär möjligt att utforma knivryggen bredare, än vad som är möjligt hos den enligt DE-Cl- 31 35 980 kända knivryggen. Vid en bredd hos knivkroppen mellan 0,5 till 1,05 kan bredden hos ändsidan av knivryggen uppgå till mellan 0,03 och 0,3 mm.Through the combination according to the invention of the cutting edge and the knife back, the two advantages are achieved, that on the one hand height differences can be equalized and on the other hand that the edge can absorb higher loads. In addition, it has also surprisingly been found that it is possible to design the knife back wider than is possible with the knife back known according to DE-C1-39 980. With a width of the knife body between 0.5 and 1.05, the width of the end side of the knife back can amount to between 0.03 and 0.3 mm.

Genom att ryggen kan utformas bredare, minskar risken att vid en tillverkningsmäs- sig avvikelse hos eggen och vid ryggen från knivkroppens mittlirije knivkroppen ändå inte blir plastiskt deformerad utan böjer sig.Because the back can be designed wider, the risk decreases that in the event of a manufacturing deviation of the edge and at the back from the central body of the knife body, the knife body still does not become plastically deformed but bends.

Ett uttöringsexempel av uppfinningen förklaras närmare i det följande med hjälp av ritningen, som visar ett tvärsnitt av en stanskniv. 10 15 528 625 3 Stanskniven 10 uppvisar en knivkropp 12 av stål, på vars enligt ritningen övre ände en egganordning 14 är anordnad, som utznynnar i en eggkant 16, som uppvisar en avrundning med en radie R på 0,014 till 0,022 mm. Knivkroppen 12 har en Vickers- hårdhet på 380 till 400 HV, medan eggen uppvisar en hårdhet på 580 till 620 HV.An exemplary embodiment of the invention is explained in more detail below with the aid of the drawing, which shows a cross section of a punching knife. 528 625 3 The punching knife 10 has a knife body 12 of steel, on the upper end of which according to the drawing an edge device 14 is arranged, which cuts into an edge edge 16, which has a rounding with a radius R of 0.014 to 0.022 mm. The knife body 12 has a Vickers hardness of 380 to 400 HV, while the edge has a hardness of 580 to 620 HV.

I den andra änden av knivkroppen 12 med en bredd b på 0,5 till 1,05 mm är en lcnivrygg 18 utformad, som på båda sidor avsmalnar symmetriskt med en avsmal- ningsvinkel på 30 till 60° och avslutas i en ändsida 20, vars bredd s upptar 0,03 till 0,3 mm. Knivryggen 18 är mjukglödgad och har en hårdhet på 250 till 360 HV.At the other end of the knife body 12 with a width b of 0.5 to 1.05 mm a blade ridge 18 is formed, which tapers symmetrically on both sides with a taper angle of 30 to 60 ° and terminates in an end side 20, the width s occupies 0.03 to 0.3 mm. The knife back 18 is soft annealed and has a hardness of 250 to 360 HV.

En särskilt lämplig stanskniv uppvisar följande parametrar: Avrundningar av skärspetsen: 0,02 mm Skärvinkel: 52° Skärhårdhet: 550 HV Knivkroppens bredd: 0,7 mm Knivkroppens hårdhet: 400 HV Knivryggens avsmalningsvinkel: 45° Bredd hos ändsidan av knivryggen: 0,05 mm Knivryggens hårdhet: 300 HV.A particularly suitable punching knife has the following parameters: Roundings of the cutting tip: 0.02 mm Cutting angle: 52 ° Cutting hardness: 550 HV Width of the knife body: 0.7 mm Hardness of the knife body: 400 HV Narrowing angle of the knife back: 45 ° Width of the end of the knife back: 0.05 mm Knife back hardness: 300 HV.

Claims (2)

528 625 Patentkrav528,625 Claims 1. Stanskniv för ett bandstålsstansverktyg, med en knivkropp (12) med en Vickers- l hårdhet på 380 till 400 HV, vilken knivlcropp i sin ena ände omfattar en 5 egganordning (14) och i sin andra ände omfattar en knivrygg (18), kännetecknad av att - egganordningen (14) har en skärvinkel (a) mellan 30° och 60°, en Vickers- hårdhet på 580 till 620 HV och avslutas i en egg (16), som uppvisar en avrundning med en radie (R) på 0,014 till 0,022 mm, och att 10 - knivryggen (18) har en Vickers-hàrdhet pà 250 till 360 HV, avsmalnar likformigt på båda sidor och avslutas i en ändsida (20), varvid avsmalningsvinkeln (ß) upptar 30° till 60°.A punching knife for a strip steel punching tool, having a knife body (12) having a Vickers hardness of 380 to 400 HV, which knife body comprises at one end a edge device (14) and at its other end comprises a knife back (18), characterized in that - the edge device (14) has a cutting angle (a) between 30 ° and 60 °, a Vickers hardness of 580 to 620 HV and terminates in an edge (16), which has a rounding with a radius (R) of 0.014 to 0.022 mm, and that the knife back (18) has a Vickers hardness of 250 to 360 HV, tapers uniformly on both sides and terminates in one end side (20), the taper angle (ß) occupying 30 ° to 60 °. 2. Stanskniv enligt lcrav 1, kännetecknad av att knivkroppen (12) uppvisar en bredd 15 (b) på mellan 0,5 :in 1,05 mm een ändsiden en bredd (s) på 0,03 :in 0,3 mm.Punching knife according to claim 1, characterized in that the knife body (12) has a width (b) of between 0.5 and 1.05 mm and an end side has a width (s) of 0.03 and 0.3 mm.
SE0401143A 2003-05-12 2004-05-03 town Knife SE528625C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20307384U DE20307384U1 (en) 2003-05-12 2003-05-12 Blade for punching and stenciling tool, comprising rounded cutting edge of specific hardness and softer ridge

Publications (3)

Publication Number Publication Date
SE0401143D0 SE0401143D0 (en) 2004-05-03
SE0401143L SE0401143L (en) 2004-11-13
SE528625C2 true SE528625C2 (en) 2007-01-09

Family

ID=27588931

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0401143A SE528625C2 (en) 2003-05-12 2004-05-03 town Knife

Country Status (2)

Country Link
DE (1) DE20307384U1 (en)
SE (1) SE528625C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050155478A1 (en) * 2004-01-21 2005-07-21 Ab Sandvik Materials Technology, Nicked cutting rule
AT508551B1 (en) * 2010-01-26 2011-02-15 Boehler Uddeholm Prec Strip Gmbh PUNCHING TOOL
CN106003245A (en) * 2016-07-04 2016-10-12 江苏广博罗纳斯科技有限公司 Die-cutting rule

Also Published As

Publication number Publication date
SE0401143D0 (en) 2004-05-03
DE20307384U1 (en) 2003-07-10
SE0401143L (en) 2004-11-13

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