DE930744C - Process for producing cutting edges with non-straight contours - Google Patents

Process for producing cutting edges with non-straight contours

Info

Publication number
DE930744C
DE930744C DEW9041A DEW0009041A DE930744C DE 930744 C DE930744 C DE 930744C DE W9041 A DEW9041 A DE W9041A DE W0009041 A DEW0009041 A DE W0009041A DE 930744 C DE930744 C DE 930744C
Authority
DE
Germany
Prior art keywords
cutting edges
flat
cutting
producing cutting
straight
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
Application number
DEW9041A
Other languages
German (de)
Inventor
Paul Blecker
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.)
Wolf Geraete GmbH
Original Assignee
Wolf Geraete GmbH
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 Wolf Geraete GmbH filed Critical Wolf Geraete GmbH
Priority to DEW9041A priority Critical patent/DE930744C/en
Application granted granted Critical
Publication of DE930744C publication Critical patent/DE930744C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/60Making other particular articles cutlery wares; garden tools or the like
    • B21D53/64Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Food-Manufacturing Devices (AREA)
  • Knives (AREA)

Description

Sohnendgeräte für Spezialzweck ie haben oft Schneiden, d@eren Konturen Winkel oder Bogen mit kleinen Radgin enthalten. Derartige Schneiden treten z. B. bei Geräten auf, die .in der Landwnmtschaft oder beim Garten@baw benutzt weiden. Dias: Schleifen @derartiger Sahneiden :,st umständlich und erfomdbrt oft Schleifsteine mixt -schwierig herzustellendem und .in dieser Farm zu erhaltendem Profil, so :d@aß die Kosten für,die Herstellung von Geräten mit -solchen Schneiden unverhältnismäßig hoch werden.Son end devices for special purposes they often have cutting edges, their contours Angle or arch with small radgin included. Such cutting occur z. B. on devices that are used in the countryside or in the garden @ baw. Slides: Grinding @ such cream silk:, is cumbersome and often takes place in grindstones mixes -difficult to manufacture and profile to be maintained in this farm, so: d @ aß the cost of producing devices with such cutting edges is disproportionate get high.

Erfindungsgemäß wird demgegenüber ein Verfahren vorgeschlagen, bei dem der Schlaifvorgang auf einer einfachen Flächenschleifmaschine durch Stirn- oder Perip!herieschlüff ausgeführt werden kann. Das Verfahren liegt :darin, daß die entsprechend,der Schnendenform Kante des flachen Blechroöhlingsentlang einer der Zusrhni!tblinie, parakelen Linie unter einem flachen Winkel abgebogen und daß im Anschlußdaran die Seite des Werkstückes, nach der die Abbiegung erfolgt isst, plan geschliffen: wird.In contrast, according to the invention, a method is proposed in which the grinding process on a simple surface grinding machine by face or Perip! Herieschlüff can be executed. The procedure lies in the fact that the corresponding, the Cut the edge of the flat sheet metal blank along one of the joining line, parallel line bent at a flat angle and that following this the The side of the workpiece after which the bend takes place is sanded flat: is.

Ein ähnliches Verfahren ist für die Herstellung von Reißfedern bekannt, bei denen es darauf ankommt, eine schneidenartige gleichmäßige Kante mit einer abgerundeten Spitze zu erhalten. Dabei glaubte man aber, von einem Stab mit etwa halbmondföormi!gem Profil ausgehen zu müssen, der nach der flachen Seite abgebogen und plan geschliffen die gewünschte Spitze ergab. Abgesehen davon, daß bei Schneidgeräten oft eine mehrfach geschwungene Schneidenkontur erforderlich ist, die nach dem bekannten Verfahren nicht herstellbar wäre, muß schon Zwecks Maternalersparnis von flachen Blechrohlingen ausgegangen !werden. Dies zu ermöglichen, iis.t,deir Inhalt Ader Erfindung.A similar process is known for the production of drawing springs, where it is important to have a blade-like, even edge with a rounded one To get tip. It was believed, however, that a stick with an approximately half-moon shape according to Profile to have to go out, bent after the flat side and sanded flat gave the desired peak. Apart from the fact that with cutting devices often a multiple curved cutting contour is required according to the known method would not be producible, must for the sake of maternal savings of flat sheet metal blanks to be assumed! To enable this, iis.t, the content of the invention.

Das Verfahren so!11 an Hand einiger durch die Zeichnung :dargestellter Ausführungsbeispiele, von Schneiden beschrieben werden. Es zeigt Fig. r eine Schneide mit gebogener Kontur, Fi!g. 2 eine Schneide mit gezackter Kontur, Fig. 3 den Querschnitt durch das Werkstück an einer beiNebi!gen Stelle nach dem ersten Arbeitsgang und Eig. 4 den Querschnitt der fertigen Schneide. Nach Fig. z und 2 ist das Blech bzw. Band r, das die Klinge bilden soll, in der erforderlichen Form zugeschnitten. Wie die gestrichelte Linie 2 neben der Schnittllcantc 3 bei diesen Figuren und wie die Fig.3, die, .den Querschnitt wiedergibt, zeigt, ist der an die Kante 3 grenzende, Teil 4 des B!lerabes.längs der- Linie 2 abgebogen, und zwar durch eine Art Prägevorgang, der entweder gleichzeitig mit dem Zuschneiden der Kontur oder als zweiter Arbeitsgang ausgeführt werden kann. In diesem Zustand wird die Klinge auf der Seite, noach der die Abbiegung erfolgt ist, plan geschliffen; und zwar nach der gestrichelten Linie 5 der Fig. 4. Es entsteht .dann bei 6 die scharfe Schneide. Der Schleifvorgang als solcher .erfordert demnach k!ainerlei SpeziaWerkzeuge,sondern lediglich eine ebene Schleiffläche, die für sämtliche Konturen verwendbar ist.The procedure like this! 11 on the basis of some of the drawings: illustrated Embodiments are described by cutting. It shows Fig. R a cutting edge with a curved contour, fig. 2 shows a cutting edge with a serrated contour, FIG. 3 shows the cross section through the workpiece at an adjacent point after the first work step and Prop. 4 the cross-section of the finished cutting edge. According to Fig. Z and 2, the sheet or Ribbon r, which is to form the blade, cut to the required shape. As the dashed line 2 next to the Schnittllcantc 3 in these figures and like the 3, which shows the cross-section, is the one adjacent to the edge 3, Part 4 of the B! Lerabes. Bent along line 2, through a kind of embossing process, either at the same time as cutting the contour or as a second operation can be executed. In this state, the blade is on its side, after which the bend has taken place, ground flat; namely after the dashed line 5 of FIG. 4. Then at 6 the sharp cutting edge arises. The grinding process as Such. therefore does not require any special tools, but only one plane Sanding surface that can be used for all contours.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Schneiden mit nicht geraden, vorzugsweise :solchen Konturen, @dieWi@nkel oder scharfeYurven enthalten, an flachen Klingen, dadurch gekennzeichnet, .daß die entsprechend der Sohneidenform zugeschnittene Kante (3) das K.ldn!genrohli:ngs entlang einer @dbr Zuschnittlinie parallelen Linie (2) unter einem flachen Winkel :abgebogen wird: und im Ansdhluß daran die Seite! des Werkstückes, nach der die Abbiegung erfolgt ist, plan geschliffen wird. Angezogene, Druckschriften: Französische Patentschrift Nr. 541 365.PATENT CLAIM: Process for the production of cutting edges with not straight, preferably: those contours that contain angles or sharp curves, on flat blades, characterized .that the corresponding to the Sohneidenform trimmed edge (3) the raw material along a @dbr cutting line parallel line (2) at a flat angle: is bent: and in the connection on the side! of the workpiece after which the bend has taken place, ground flat will. Attached, publications: French patent specification No. 541 365.
DEW9041A 1952-07-16 1952-07-16 Process for producing cutting edges with non-straight contours Expired DE930744C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW9041A DE930744C (en) 1952-07-16 1952-07-16 Process for producing cutting edges with non-straight contours

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW9041A DE930744C (en) 1952-07-16 1952-07-16 Process for producing cutting edges with non-straight contours

Publications (1)

Publication Number Publication Date
DE930744C true DE930744C (en) 1955-07-25

Family

ID=7593988

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW9041A Expired DE930744C (en) 1952-07-16 1952-07-16 Process for producing cutting edges with non-straight contours

Country Status (1)

Country Link
DE (1) DE930744C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR541365A (en) * 1921-09-21 1922-07-26 Manufacturing process of a line puller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR541365A (en) * 1921-09-21 1922-07-26 Manufacturing process of a line puller

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