DE568706C - Precutter for safety rebate head - Google Patents

Precutter for safety rebate head

Info

Publication number
DE568706C
DE568706C DEE42495D DEE0042495D DE568706C DE 568706 C DE568706 C DE 568706C DE E42495 D DEE42495 D DE E42495D DE E0042495 D DEE0042495 D DE E0042495D DE 568706 C DE568706 C DE 568706C
Authority
DE
Germany
Prior art keywords
safety
cutting knife
head
precutter
rebate
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
DEE42495D
Other languages
German (de)
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.)
IMANUEL EISELE
Original Assignee
IMANUEL EISELE
Publication date
Priority to DEE42495D priority Critical patent/DE568706C/en
Application granted granted Critical
Publication of DE568706C publication Critical patent/DE568706C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/12—Cutter blocks; Other rotary cutting tools for profile cutting
    • B27G13/14—Cutter blocks; Other rotary cutting tools for profile cutting for cutting grooves or tenons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/10—Measures preventing splintering of sawn portions of wood

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)

Description

Vorschneider für Sicherheitsfalzkopf Die bisher bekannten Vorsclmeidmesser für Sicherheitsfalzköpfe haben den Nachteil, daß dieselben immer vorwärts schneidend angeordnet sind, also die Spitze des Vorschneidmessers immer zuerst das Holz verläßt und daher beim Austritt aus diesem die äußersten Fasern vom Inneren des Holzes heraus abhebt, worauf das lästige Fransen und Splittern zurückzuführen ist, das besonders nachteilig bei aufgeleimtem, dünnem Sperrholz sich zeigt. Die Folgeei sind viel Nacharbeit und Ausschuß.Pre-cutter for safety hemming head The previously known pre-cutting knife for safety hemming heads have the disadvantage that they always cut forward are arranged, so the tip of the precutting knife always leaves the wood first and therefore the outermost fibers from the inside of the wood on exiting it stands out, which is the reason for the annoying fringes and splinters, especially that disadvantageous with glued, thin plywood. The consequences are a lot Rework and scrap.

Diesem Übelstand hilft die in den Anlagen beschriebene Erfindung in der denkbar einfachsten Weise dadurch ab, daß die Vorschneidmesser rückwärts schneidend angeordnet sind, deren Spitze also zuletzt das Holz verläßt, so daß dieselben beim Austritt aus dem Holz die äußersten Fasern nach dem Innern des Holzes drücken und dabei diese in ziehender Weise abschneiden, ohne die lästigen Fransen zu hinterlassen bzw. ohne zu splittern. Um möglichst kurze Späne zu erhalten, also lange Splitterbildung zu verhindern, können die Vorschneidmesser auch doppelschneidig ausgeführt werden.The invention described in the annexes in FIG the simplest conceivable way in that the pre-cutting knives cut backwards are arranged, the tip of which leaves the wood last, so that the same when Leaving the wood the outermost fibers push towards the inside of the wood and cut them off in a pulling manner without leaving the annoying fringes behind or without splintering. In order to keep the chips as short as possible, i.e. long splinters To prevent this, the pre-cutting knives can also be double-edged.

Auf der Zeichnung ist die Erfindung in verschiedenen Ausführungsbeispielen dargestellt, es bedeutet Abb. i die Aufsicht auf den Fräskopf in der Stellung, wo eines der Vorschneidmesser aus dem Holz austritt, Abb.2 die Seitenansicht einer Vorschneidmesserausführung, Abb.3 die Seiten- und Stirnansicht einer anderen Vorschneidmesserausführung.The invention is shown in various exemplary embodiments in the drawing shown, it means Fig. i the plan view of the milling head in the position where one of the pre-cutting knives emerges from the wood, Fig. 2 is a side view of a Pre-cutting knife version, Fig. 3 the side and front view of another pre-cutting knife version.

Aus dem Arbeitsstück a tritt das in dem Fräskopf b eingesetzte Vorschneidmesser c bei der Stelle d aus, und dabei schneidet die scharfe Seitenkante e des Vorschneidmessers c die .äußere Holzfaser nach innen drückend ab. Die parallel zur Seitenkantee angeordnete Seitenkante l teilt den vom Messer abzuhebemden Span und verhindert dadurch lange Splitterbildung. Nachgeschärft wird dieses Vorschneidmesser durch Zurückschleifen der geraden Stirnkante g. Das Vorschneidm@esser lt dagegen wird auf der schrägen Fläche i geschliffen.The pre-cutting knife inserted in the milling head b emerges from the workpiece a c at point d, and the sharp side edge e of the precutting knife cuts c pushing the outer wood fiber inwards. The one arranged parallel to the side edge Side edge l divides the chip to be lifted off the knife and thus prevents a long time Splintering. This pre-cutting knife is re-sharpened by grinding back the straight front edge g. The pre-cutting knife, on the other hand, is on the inclined Surface i ground.

Claims (1)

PATENTANspRÜcHE: i. Vorschneidmesser für Sicherheitsfalzkopf, dadurch gekennzeichnet, daß die Vorschneidmesser mit rückwärts verlaufender Schneidkante (e) versehen sind, also mit der am weitesten vorstehenden Spitze zuletzt aus dem Holz austreten. z. Vorschneidmesser für Sicherheitsheitsfalzkopf nach Anspruch i; dadurch gekennzeichnet, daß die Vorschneidmesser zur Verhinderung langer Splitterbildung mit einer zweiten Schneidkante (f) versehen sind.PATENT CLAIMS: i. Pre-cutting knife for safety hemming head, thereby characterized in that the pre-cutting knife with a cutting edge extending backwards (e) are provided, i.e. with the point that protrudes furthest from the last Wood leak. z. Pre-cutting knife for safety hemming head according to claim i; characterized in that the pre-cutting knife to prevent long splinters are provided with a second cutting edge (f).
DEE42495D Precutter for safety rebate head Expired DE568706C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE42495D DE568706C (en) Precutter for safety rebate head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE42495D DE568706C (en) Precutter for safety rebate head

Publications (1)

Publication Number Publication Date
DE568706C true DE568706C (en) 1933-01-23

Family

ID=7079330

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE42495D Expired DE568706C (en) Precutter for safety rebate head

Country Status (1)

Country Link
DE (1) DE568706C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0590408A1 (en) * 1992-09-29 1994-04-06 Ledermann GmbH Tool for milling mortises and slots

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0590408A1 (en) * 1992-09-29 1994-04-06 Ledermann GmbH Tool for milling mortises and slots

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