EP0707925B1 - Knife with exchangeable blade such as a deburring knife for plastic components or the like - Google Patents

Knife with exchangeable blade such as a deburring knife for plastic components or the like Download PDF

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Publication number
EP0707925B1
EP0707925B1 EP95112339A EP95112339A EP0707925B1 EP 0707925 B1 EP0707925 B1 EP 0707925B1 EP 95112339 A EP95112339 A EP 95112339A EP 95112339 A EP95112339 A EP 95112339A EP 0707925 B1 EP0707925 B1 EP 0707925B1
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EP
European Patent Office
Prior art keywords
clamping
slide
clamping groove
knife
extension
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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 - Lifetime
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EP95112339A
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German (de)
French (fr)
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EP0707925A1 (en
Inventor
Harald Prof. Dipl.-Ing. Berns
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Martor KG
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Martor Argentax EH Beermann KG
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Publication of EP0707925A1 publication Critical patent/EP0707925A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00—Hand knives with one or more detachable blades

Definitions

  • the invention relates to a knife with an interchangeable blade, like deburring knives for plastic parts or the like, according to the preamble of the claim 1.
  • a knife is known from DE-A1-37 40 036 known.
  • the well-known knife with interchangeable blade which mainly as a deburring knife for plastic parts used, has a handle body, whose front grip area is an undercut Has clamping groove with a trapezoidal cross section. The edges of the clamping groove pointing outwards parallel to each other. The clamping groove bottom rises from forward free end of the front grip area towards the back, so that wedge-shaped clamping groove side surfaces available. From the front into this clamping groove a slide with parallel longitudinal edges inserted, which over its axial length each other has identical trapezoidal cross sections. Here the knife blade between the clamping groove base and the slider base facing the latter added. By further movement of the slide the interchangeable blade moves backwards due to friction dragged backwards as a result the continuously decreasing clamping groove height jammed.
  • this object in that the front grip area a freely protruding clamping extension with trapezoidal Cross section forms on which with its rear
  • the slider is attached at the end, which is one undercut clamping groove with trapezoidal cross-section sits, with clamping groove base and the latter facing clamping extension base between form the clamping gap, with clamping groove base and clamping extension base on the one hand as well as both clamping groove side surfaces and both corresponding ones Clamping extension side surfaces on the other hand run parallel to each other and where there is a clamping extension and clamping groove to their front free ends taper continuously, so that the width of the clamping groove and, correspondingly, the width of the Clamping process, to the front free ends of the Remove the slide and the clamping extension continuously.
  • a very large clamping force can, according to the invention be applied in that there is a clamping extension and clamping groove towards their front free ends continuously taper such that the width of the clamping groove and, correspondingly, the width of the Clamping process, to the front free ends of the Remove the slide and the clamping extension continuously.
  • Another peculiarity of the knife according to the invention is that both the groove height and also the height of the clamping extension from the back to decrease at the front. In this way, a clear, almost pointed, construction of the blade holder achieved.
  • An essential embodiment of the invention exists in that the slide at least in its Axial area is closed in a ring.
  • the slide by means of one in its rear Area arranged, bridging the clamping groove, Cohesively connected web in a ring closed, which according to further features of the invention protrudes away from the clamping groove and as Slider handle is formed.
  • the slide at least one of its rear end protruding backwards and in the front Grip area can be snapped into place with axial movement space Has locking arm.
  • This arrangement is the Slider held captive on the front grip area. The assembly is done in a simple manner Snap assembly. At the same time, the locking arm receives an axial one Movement space, so that the clamp and release function of the slide despite its captivity is guaranteed.
  • the deburring knife 10 has an elongated Handle 11 with a front grip area 12 on which protrudes forward from a clamping extension 13. On the clamping extension 13 is a clamping groove 14 Slider 15 attached.
  • Clamping extension 13 and slide 15 serve together the clamp of an interchangeable blade 16.
  • the front grip area 12 (see FIG. 5) one continuously towards its free end 17 tapering, freely projecting clamping extension 13 with a trapezoidal cross-section.
  • the slider 15 On the clamping extension 13, with its rear end 18 ahead, the slider 15 is attached.
  • the slide 15 has one towards its free front end 20 continuously tapering Clamping groove 14 with a trapezoidal cross section.
  • clamping groove base 19 and the latter facing Terminal extension base 21 on the one hand and both clamping groove side surfaces 22 and both clamping extension side surfaces 23 on the other hand extend parallel to each other.
  • Clamping groove width BN and clamping groove height HN and corresponding the width BF and the height HF of the clamping extension 13, take to the free ends 20, 17 of the Slider 15 and the clamping extension 13 out continuously from (see also Fig. 8).
  • clamping groove 14 and slide 15 there is a secure parallel delivery of the Clamping gap SP. This ensures a very secure clamping lock the delivery position in that the clamping groove width BN and the clamping extension width BF Decrease continuously towards the free ends 20 and 17. This is exemplified by the bottom view 7 of the clamping extension 13 according to FIG shown wedge angle ⁇ shown.
  • the wedge angle ⁇ are dimensioned so that self-locking in the clamping position is guaranteed.
  • angles ⁇ according to FIGS. 5 and 6 represent that clamping groove height HN and clamping extension height HF too remove the free ends 20, 17 (see FIG. 8), in order to create an almost pointed, clear overview To achieve the design of the blade holder.
  • the slide 15 is by means of one in its arranged rear area, the clamping groove 14th cross-bridging, cohesively connected Bridge 25 closed in a ring.
  • the web 25 protrudes transversely away from the clamping groove 14 and forms at the same time handling surfaces 26, 27 for actuation the slide 15.
  • the clamping groove base 19 and the clamping extension base 21 compared to the axial length the interchangeable blade 16 is formed axially overlong.
  • the slide 15 has a locking arm 28 has the top with a clamping groove base 19 flush interchangeable blade guide surfaces 29 forms. This is the way created that the interchangeable blade 16 within the Clamping gap SP in an axially pushed back Protective position can be completely picked up and clamped is.
  • the slide 15 has a slide wall 30 breaking through in the area of the clamping groove base area 19 Viewing opening 31 on.
  • the locking arm 28 is transverse to the longitudinal central axis x of the knife 10 deflectable and has a hammer head Detent 32 on which with axial movement space 35 in one in their front end axial stops 33 having locking groove 34 can be locked.
  • point Clamping groove base 19 and clamping extension base 21 each have a centrally arranged, axially extending groove-like incision 36 each with approximately semicircular Cross section for receiving the cross section in FIG. 9 shown round shaft 37 of a round shaft deburring blade 38 on.
  • round shaft deburring blades 38 are for example by DE-U1-86 18 646 known.
  • the insertion end of the round shaft 37 has one Ring groove 39 on.
  • the plate-shaped adapter 40 has in the middle Arrangement one with the two groove-like incisions 36 aligned, open to the front, in Axial direction undercut by centering projections 41 Adapter slot 42 on.
  • the centering projections 41 engage laterally in the annular groove 39.
  • the rear end face 50 of the platelet-shaped Adapter 40 abuts the rear stop 49 at the axial end of the locking groove base surface 48.
  • the front end face 51 of the adapter 40 is with the front free end 17 of the clamping extension 13 flush.
  • the assembly of the arrangement shown in FIGS. 9 and 10 proceeds as follows: The round shaft 37 is inserted into the adapter slot 42 from above, see above that the centering projections 41 engage in the annular groove 39 can. This arrangement is then from the beginning inserted into the open clamping gap SP, after which the Infeed displacement of the slide 15 in the sliding direction z is done.

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  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)

Description

Die Erfindung betrifft ein Messer mit Wechselklinge, wie Entgratemesser für Kunststoffteile od.dgl., entsprechend dem Oberbegriff des Anspruchs 1. Ein solches Messer ist durch die DE-A1-37 40 036 bekanntgeworden.The invention relates to a knife with an interchangeable blade, like deburring knives for plastic parts or the like, according to the preamble of the claim 1. Such a knife is known from DE-A1-37 40 036 known.

Das bekannte Messer mit Wechselklinge, welches hauptsächlich als Entgratemesser für Kunststoffteile zum Einsatz gelangt, weist einen Griffkörper auf, dessen vorderer Griffbereich eine hinterschnittene Klemmnut mit trapezförmigem Querschnitt aufweist. Die nach außen weisenden Kanten der Klemmnut verlaufen parallel zueinander. Der Klemmnutboden steigt vom vorderen freien Ende des vorderen Griffbereichs nach hinten hin an, so daß keilförmige Klemmnut-Seitenflächen vorhanden sind. In diese Klemmnut wird von vorn ein Schieber mit einander parallelen Längskanten eingeschoben, welcher über seine axiale Länge einander identische trapezförmige Querschnitte aufweist. Dabei wird die Messerklinge zwischen der Klemmnutgrundfläche und der letzterer zugewandten Schiebergrundfläche aufgenommen. Durch weitere Bewegung des Schiebers nach hinten wird die Wechselklinge durch Reibungsschluß nach hinten mitgeschleppt und hierbei infolge der kontinuierlich nach hinten abnehmenden Klemmnuthöhe verklemmt.The well-known knife with interchangeable blade, which mainly as a deburring knife for plastic parts used, has a handle body, whose front grip area is an undercut Has clamping groove with a trapezoidal cross section. The edges of the clamping groove pointing outwards parallel to each other. The clamping groove bottom rises from forward free end of the front grip area towards the back, so that wedge-shaped clamping groove side surfaces available. From the front into this clamping groove a slide with parallel longitudinal edges inserted, which over its axial length each other has identical trapezoidal cross sections. Here the knife blade between the clamping groove base and the slider base facing the latter added. By further movement of the slide the interchangeable blade moves backwards due to friction dragged backwards as a result the continuously decreasing clamping groove height jammed.

Obwohl das durch die DE-A1-37 40 036 bekannte Entgratemesser einen vorteilhaften werkzeuglosen Klingenwechsel gestattet, ist das Bedürfnis entstanden, bei noch einfacherem und besonders handhabungssicherem Klingenwechsel hinreichend große Klemmkräfte in dem die Wechselklinge haltenden Klemmspalt zu erzeugen.Although that known from DE-A1-37 40 036 Deburring knife an advantageous tool-free Blade changes allowed, the need arose, with an even simpler and particularly safe to use Blade change sufficiently large clamping forces in the clamping gap holding the interchangeable blade.

Entsprechend der Erfindung wird diese Aufgabe dadurch gelost, daß der vordere Griffbereich einen frei vorragenden Klemmfortsatz mit trapezförmigem Querschnitt bildet, auf welchen mit seinem hinteren Ende voran der Schieber aufgesteckt ist, welcher eine hinterschnittene Klemmnut mit trapezförmigem Querschnitt sitzt, wobei Klemmnutgrundfläche und die letzterer zugewandte Klemmfortsatzgrundfläche zwischen sich den Klemmspalt bilden, wobei Klemmnutgrundfläche und Klemmfortsatzgrundfläche einerseits sowie beide Klemmnutseitenflächen und beide korrespondierenden Klemmfortsatzseitenflächen andererseits parallel zueinander verlaufen und wobei sich Klemmfortsatz und Klemmnut zu ihren vorderen freien Enden hin kontinuierlich verjüngen, derart, daß die Klemmnutbreite und, korrespondierend auch die Breite des Klemmfortsatzes, zu den vorderen freien Enden des Schiebers und des Klemmfortsatzes kontinuierlich abnehmen.According to the invention, this object in that the front grip area a freely protruding clamping extension with trapezoidal Cross section forms on which with its rear The slider is attached at the end, which is one undercut clamping groove with trapezoidal cross-section sits, with clamping groove base and the the latter facing clamping extension base between form the clamping gap, with clamping groove base and clamping extension base on the one hand as well as both clamping groove side surfaces and both corresponding ones Clamping extension side surfaces on the other hand run parallel to each other and where there is a clamping extension and clamping groove to their front free ends taper continuously, so that the width of the clamping groove and, correspondingly, the width of the Clamping process, to the front free ends of the Remove the slide and the clamping extension continuously.

Im Vergleich zum bekannten Messer gemäß der DE-A1-37 40 036 wird der Schieber unter Bildung eines Klemmspaltes auf den Klemmfortsatz zunächst locker aufgeschoben, so daß das rückwärtige Ende der Wechselklinge von vorn in den Klemmspalt eingeschoben werden kann, worauf der Schieber gegen den vorderen Griffbereich nach hinten geschoben und hiermit die Klemmaufnahme der Wechselklinge vollendet wird. Aus Vorstehendem wird deutlich, daß der Klingenwechsel einfacher, rascher und unproblematischer vonstatten geht, zumal die Wechselklinge vom Schieber nahezu gänzlich umfaßt ist, so daß bei der Handhabung des Schiebers eine Verletzungsgefahr nahezu ausgeschlossen ist.Compared to the known knife according to the DE-A1-37 40 036 the slide is forming a Clamping gap on the clamping extension is initially loose slipped on so that the rear end of the interchangeable blade pushed into the clamping gap from the front can be what the slider against the front Handle area pushed back and thus the Clamping of the interchangeable blade is completed. Out The above makes it clear that the blade change easier, faster and less problematic goes, especially since the interchangeable blade from the slide almost is entirely included, so that when handling the Slider almost eliminates the risk of injury is.

Eine sehr große Klemmkraft kann erfindungsgemäß dadurch aufgebracht werden, daß sich Klemmfortsatz und Klemmnut zu ihren vorderen freien Enden hin kontinuierlich verjüngen, derart, daß die Klemmnutbreite und, korrespondierend auch die Breite des Klemmfortsatzes, zu den vorderen freien Enden des Schiebers und des Klemmfortsatzes kontinuierlich abnehmen.A very large clamping force can, according to the invention be applied in that there is a clamping extension and clamping groove towards their front free ends continuously taper such that the width of the clamping groove and, correspondingly, the width of the Clamping process, to the front free ends of the Remove the slide and the clamping extension continuously.

Durch entsprechende Wahl der die Verjüngung von Klemmnut und Klemmfortsatz bestimmenden Winkel ist zudem die Klemmung durch Selbsthemmung gesichert.By appropriate choice of the rejuvenation of Clamping groove and clamping extension is the defining angle the clamping is also secured by self-locking.

Eine weitere Eigenart des erfindungsgemäßen Messers besteht darin, daß sich sowohl die Nuthöhe als auch die Höhe des Klemmfortsatzes von hinten nach vorn verringern. Auf diese Weise wird eine übersichtliche, nahezu spitz zulaufende, Bauweise der Klingenaufnahme erzielt.Another peculiarity of the knife according to the invention is that both the groove height and also the height of the clamping extension from the back to decrease at the front. In this way, a clear, almost pointed, construction of the blade holder achieved.

Eine wesentliche Ausgestaltung der Erfindung besteht darin, daß der Schieber zumindest in seinem Axialbereich ringförmig geschlossen ist. Zweckmäßig ist dabei der Schieber mittels eines in seinem hinteren Bereich angeordneten, die Klemmnut überbrückenden, stoffschlüssig angebundenen Steges ringförmig geschlossen, welcher entsprechend weiteren Erfindungsmerkmalen von der Klemmnut weg aufragt und als Schieber-Handhabe ausgebildet ist. Dadurch, daß der Schieber ringförmig geschlossen ist, bietet dieser durch einen ringförmig geschlossenen Kraftfluß die Gewähr dafür, daß die seitlichen Bereiche des Schiebers mit den Nutseitenflächen nicht nach außen hin nachgeben können.An essential embodiment of the invention exists in that the slide at least in its Axial area is closed in a ring. Appropriately is the slide by means of one in its rear Area arranged, bridging the clamping groove, Cohesively connected web in a ring closed, which according to further features of the invention protrudes away from the clamping groove and as Slider handle is formed. The fact that the Slider is closed in a ring, this offers through an annular closed flow of power Ensure that the side areas of the slide with the groove side surfaces not to the outside can give in.

In weiterer Ausgestaltung der Erfindung sind Klemmnutgrundfläche und Klemmfortsatzgrundfläche im Vergleich zur axialen Länge der Wechselklinge überlang ausgebildet, derart, daß die Wechselklinge innerhalb des Klemmspaltes in einer axial zurückgeschobenen Position gänzlich aufnehm- und verklemmbar ist. Das erfindungsgemäße Entgratemesser gestattet daher in einfacher Weise eine Sicherungsposition der Wechselklinge innerhalb eines vom Klemmspalt gebildeten Schutzraumes, so daß Handverletzungen für den Fall vermieden werden können, daß das Messer bei Nichtgebrauch in der Arbeitskleidung mitgeführt wird.In a further embodiment of the invention Clamping groove base area and clamping extension base area in Long compared to the axial length of the interchangeable blade trained such that the interchangeable blade within of the clamping gap in an axially pushed back Position is completely receivable and jammed. The deburring knife according to the invention therefore allows a locking position of the interchangeable blade in a simple manner within one formed by the nip Shelter so that hand injuries in case can be avoided that the knife when not in use is carried in work clothes.

Dadurch, daß der Schieber eine die Schieberwandung im Bereich der Klemmnutgrundfläche durchbrechende Sichtöffnung aufweist, kann mit einem Blick festgestellt werden, ob eine Wechselklinge im Klemmspalt verborgen ist.The fact that the slide a the slide wall breaking through in the area of the clamping groove base Has a view opening can be seen at a glance determine whether there is an interchangeable blade in the clamping gap is hidden.

Besonders wesentliche Erfindungsmerkmale bestehen darin, daß der Schieber mindestens einen von seinem hinteren Ende nach hinten ragenden und im vorderen Griffbereich mit axialem Bewegungsraum einrastbaren Rastarm aufweist. Durch diese Anordnung ist der Schieber unverlierbar am vorderen Griffbereich gehalten. Der Zusammenbau erfolgt in einfacher Weise durch Rastmontage. Zugleich erhält der Rastarm einen axialen Bewegungsraum, so daß die Klemm- und Lösefunktion des Schiebers trotz dessen Unverlierbarkeitsicherung gewährleistet ist.Particularly important features of the invention exist in that the slide at least one of its rear end protruding backwards and in the front Grip area can be snapped into place with axial movement space Has locking arm. This arrangement is the Slider held captive on the front grip area. The assembly is done in a simple manner Snap assembly. At the same time, the locking arm receives an axial one Movement space, so that the clamp and release function of the slide despite its captivity is guaranteed.

Weitere Erfindungsmerkmale ergeben sich aus zusätzlichen Unteransprüchen.Further features of the invention result from additional ones Subclaims.

In den Zeichnungen ist die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher dargestellt, es zeigt,

  • Fig. 1 eine Ansicht eines Entgratemessers,
  • Fig. 2 das Messer gemäß Fig. 1 nach einer Drehung um 180° um die mit x bezeichnete Längsmittelachse,
  • Fig. 3 das Messer entsprechend dem mit III bezeichneten Ansichtspfeil in Fig. 1, größtenteils geschnitten,
  • Fig. 4 das Messer gemäß Fig. 3 mit nach vorn geschobenem, sich in seiner Lösestellung befindlichem Klemmschieber,
  • Fig. 5 in vergrößerter Darstellung einen Teil des vorderen Griffsbereichs mit von letzterem vorragenden Klemmfortsatz, zum Teil im Längsschnitt,
  • Fig. 6 in demselben Maßstab gemäß Fig. 5 den Klemmschieber, teilweise im Längsschnitt,
  • Fig. 7 eine Untersicht der Anordnung entsprechend dem in Fig. 5 mit VII mit Ansichtspfeil,
  • Fig. 8 eine vergrößerte Stirnansicht des Messers entsprechend dem in Fig. 1 mit VIII bezeichneten Ansichtspfeil,
  • Fig. 9 in Anlehnung an Fig. 8, jedoch in einem demgegenüber kleineren Maßstab, eine Stirnansicht (teilweise geschnitten) mit einer Rundschaft-Entgrateklinge und
  • Fig. 10 unter Weglassung von Schieber und Klemmfortsatz eine Draufsicht auf die Rundschaft-Entgrateklinge mit Adapterplättchen entsprechend dem Ansichtspfeil X in Fig. 9.
    • The invention is illustrated in more detail in the drawings with the aid of a preferred exemplary embodiment.
  • 1 is a view of a deburring knife,
  • 2 the knife according to FIG. 1 after a rotation through 180 ° about the longitudinal central axis designated x,
  • 3 shows the knife in accordance with the view arrow labeled III in FIG. 1, largely cut,
  • 4 shows the knife according to FIG. 3 with the clamping slide pushed forward and in its release position,
  • 5 is an enlarged view of part of the front grip area with the protruding projection of the latter, partly in longitudinal section,
  • 6 on the same scale of FIG. 5, the clamping slide, partially in longitudinal section,
  • 7 is a bottom view of the arrangement corresponding to that in Fig. 5 with VII with arrow,
  • 8 is an enlarged end view of the knife according to the view arrow designated VIII in FIG. 1,
  • Fig. 9 based on Fig. 8, but on a smaller scale, an end view (partially cut) with a round-shaft deburring blade and
  • 10, omitting the slide and clamping extension, a top view of the round-shaft deburring blade with adapter plate corresponding to the arrow X in FIG. 9.

    • In den Zeichnungen ist ein Entgratemesser insgesamt mit der Bezugsziffer 10 bezeichnet.In the drawings there is a total deburring knife designated by the reference number 10.

    Das Entgratemesser 10 weist einen länglichen Griff 11 mit einem vorderen Griffbereich 12 auf, von welchem aus ein Klemmfortsatz 13 nach vorn ragt. Auf den Klemmfortsatz 13 ist ein eine Klemmnut 14 aufweisender Schieber 15 aufgesteckt.The deburring knife 10 has an elongated Handle 11 with a front grip area 12 on which protrudes forward from a clamping extension 13. On the clamping extension 13 is a clamping groove 14 Slider 15 attached.

    Klemmfortsatz 13 und Schieber 15 dienen gemeinsam der Klemmhalterung einer Wechselklinge 16. Clamping extension 13 and slide 15 serve together the clamp of an interchangeable blade 16.

    Wie insbesondere aus den Fig. 5-7 im Gesamtzusammenhang mit den übrigen Zeichnungen zu ersehen ist, weist der vordere Griffbereich 12 (vgl. Fig. 5) einen sich zu seinem freien Ende 17 hin kontinuierlich verjüngenden, frei vorkragenden Klemmfortsatz 13 mit trapezförmigem Querschnitt auf. Auf den Klemmfortsatz 13 ist, mit seinem hinteren Ende 18 voran, der Schieber 15 aufgesteckt.As in particular from FIGS. 5-7 in the overall context can be seen with the other drawings the front grip area 12 (see FIG. 5) one continuously towards its free end 17 tapering, freely projecting clamping extension 13 with a trapezoidal cross-section. On the clamping extension 13, with its rear end 18 ahead, the slider 15 is attached.

    Der Schieber 15 weist eine sich zu seinem freien vorderen Ende 20 hin kontinuierlich verjüngende Klemmnut 14 mit trapezförmigem Querschnitt auf.The slide 15 has one towards its free front end 20 continuously tapering Clamping groove 14 with a trapezoidal cross section.

    Die Klemmnutgrundfläche 19 und die letzterer zugewandte Klemmfortsatzgrundfläche 21 einerseits sowie beide Klemmnutseitenflächen 22 und beide Klemmfortsatzseitenflächen 23 andererseits erstrecken sich parallel zueinander.The clamping groove base 19 and the latter facing Terminal extension base 21 on the one hand and both clamping groove side surfaces 22 and both clamping extension side surfaces 23 on the other hand extend parallel to each other.

    Klemmnutbreite BN und Klemmnuthöhe HN und korrespondierend die Breite BF und die Höhe HF des Klemmfortsatzes 13, nehmen zu den freien Enden 20, 17 des Schiebers 15 und des Klemmfortsatzes 13 hin kontinuierlich ab (s.a.Fig. 8).Clamping groove width BN and clamping groove height HN and corresponding the width BF and the height HF of the clamping extension 13, take to the free ends 20, 17 of the Slider 15 and the clamping extension 13 out continuously from (see also Fig. 8).

    Durch die vorbeschriebene Gesamtkonzeption der geometrischen Verhältnisse von Klemmnut 14 und Schieber 15 erfolgt eine sichere Parallelzustellung des Klemmspaltes SP. Dabei wird eine sehr sichere Klemmarretierung der Zustellposition dadurch bewirkt, daß die Klemmnutbreite BN und die Klemmfortsatzbreite BF zu den freien Enden 20 und 17 hin kontinuierlich abnehmen. Dies ist exemplarisch durch die Untersicht des Klemmfortsatzes 13 gemäß Fig. 7 anhand der dort angegebenen Keilwinkel α gezeigt. Die Keilwinkel α sind so bemessen, daß Selbsthemmung in der Klemmlage gewährleistet ist.Due to the overall concept of geometrical relationships of clamping groove 14 and slide 15 there is a secure parallel delivery of the Clamping gap SP. This ensures a very secure clamping lock the delivery position in that the clamping groove width BN and the clamping extension width BF Decrease continuously towards the free ends 20 and 17. This is exemplified by the bottom view 7 of the clamping extension 13 according to FIG shown wedge angle α shown. The wedge angle α are dimensioned so that self-locking in the clamping position is guaranteed.

    Die Winkel β gemäß den Fig. 5 und 6 geben wieder, daß Klemmnuthöhe HN und Klemmfortsatzhöhe HF zu den freien Enden 20, 17 hin abnehmen (vgl. Fig. 8), um auf diese Weise eine nahezu spitze, übersichtliche Bauform der Klingenaufnahme zu erzielen.The angles β according to FIGS. 5 and 6 represent that clamping groove height HN and clamping extension height HF too remove the free ends 20, 17 (see FIG. 8), in order to create an almost pointed, clear overview To achieve the design of the blade holder.

    Damit ein kraftvolles Aufschieben des Schiebers 15 und zugleich ein Aufklaffen der die Klemmnutseitenflächen 22 bildenden Schieber-Seitenwände 24 vermieden ist, ist der Schieber 15 mittels eines in seinem hinteren Bereich angeordneten, die Klemmnut 14 quer überbrückenden, stoffschlüssig angebundenen Steges 25 ringförmig geschlossen. Der Steg 25 ragt quer von der Klemmnut 14 weg nach oben und bildet zugleich Handhabungsflächen 26, 27 für die Betätigung des Schiebers 15.This means that the slide is pushed open forcefully 15 and at the same time a gaping of the clamping groove side surfaces 22 forming slide side walls 24 avoided is, the slide 15 is by means of one in its arranged rear area, the clamping groove 14th cross-bridging, cohesively connected Bridge 25 closed in a ring. The web 25 protrudes transversely away from the clamping groove 14 and forms at the same time handling surfaces 26, 27 for actuation the slide 15.

    Wie im Zusammenhang der Figuren, insbesondere unter Berücksichtigung der Fig. 3 und 4, ersichtlich ist, sind die Klemmnutgrundfläche 19 und die Klemmfortsatzgrundfläche 21 im Vergleich zur axialen Länge der Wechselklinge 16 axial überlang ausgebildet. Hinzu kommt, daß der Schieber 15 einen Rastarm 28 aufweist, der oberseitig eine mit der Klemmnutgrundfläche 19 flächenbündige Wechselklingen-Führungsfläche 29 bildet. Auf diese Weise ist die Möglichkeit geschaffen, daß die Wechselklinge 16 innerhalb des Klemmspaltes SP in einer axial zurückgeschobenen Schutzposition gänzlich aufnehmbar und verklemmbar ist. Um auf einen Blick festzustellen, ob sich innerhalb des Klemmspaltes SP eine Wechselklinge 16 befindet, weist der Schieber 15 eine die Schieberwandung 30 im Bereich der Klemmnutgrundfläche 19 durchbrechende Sichtöffnung 31 auf.As in the context of the figures, in particular taking into account FIGS. 3 and 4, can be seen is the clamping groove base 19 and the clamping extension base 21 compared to the axial length the interchangeable blade 16 is formed axially overlong. In addition, the slide 15 has a locking arm 28 has the top with a clamping groove base 19 flush interchangeable blade guide surfaces 29 forms. This is the way created that the interchangeable blade 16 within the Clamping gap SP in an axially pushed back Protective position can be completely picked up and clamped is. To see at a glance whether there is any of the clamping gap SP there is an interchangeable blade 16, the slide 15 has a slide wall 30 breaking through in the area of the clamping groove base area 19 Viewing opening 31 on.

    Der Rastarm 28 ist quer zur Längsmittelachse x des Messers 10 einfederbar und weist ein hammerkopfförmiges Rastende 32 auf, welches mit axialem Bewegungsraum 35 in eine in ihrem vorderen Ende Axialanschläge 33 aufweisende Rastnut 34 einrastbar ist.The locking arm 28 is transverse to the longitudinal central axis x of the knife 10 deflectable and has a hammer head Detent 32 on which with axial movement space 35 in one in their front end axial stops 33 having locking groove 34 can be locked.

    Aus der vorstehenden Schilderung wird deutlich, daß der Schieber 15 dank seines Rastarmes 28 in Verbindung mit der Rastnut 34 in einfacher Weise durch Aufsteckmontage montierbar und unverlierbar gehalten ist.From the above description it is clear that the slider 15 thanks to its locking arm 28 in connection with the locking groove 34 in a simple manner Push-on assembly mountable and held captive is.

    Wie aus den Fig. 8 und 9 zu ersehen ist, weisen Klemmnutgrundfläche 19 und Klemmfortsatzgrundfläche 21 je einen mittig angeordneten, axial verlaufenden nutartigen Einschnitt 36 mit je etwa halbkreisförmigem Querschnitt zur Aufnahme des in Fig. 9 im Querschnitt dargestellten Rundschaftes 37 einer Rundschaftentgrateklinge 38 auf. Derartige Rundschaftentgrateklingen 38 sind beispielsweise durch das DE-U1-86 18 646 bekannt.As can be seen from FIGS. 8 and 9, point Clamping groove base 19 and clamping extension base 21 each have a centrally arranged, axially extending groove-like incision 36 each with approximately semicircular Cross section for receiving the cross section in FIG. 9 shown round shaft 37 of a round shaft deburring blade 38 on. Such round shaft deburring blades 38 are for example by DE-U1-86 18 646 known.

    Das Einsteckende des Rundschaftes 37 weist eine Ringnut 39 auf. The insertion end of the round shaft 37 has one Ring groove 39 on.

    Damit sich der Rundschaft 37 um seine Drehachse y drehen kann, ist zwischen Klemmnutgrundfläche 19 und Klemmfortsatzgrundfläche 21 anstelle einer Wechselklinge 16 (s.Fig. 8) mit rechteckigem Querschnitt ein plättchenförmiger Adapter 40 mit demselben Querschnitt der Wechselklinge 16 in den Klemmspalt SP eingesetzt.So that the round shaft 37 about its axis of rotation y can rotate is between the clamping groove base surface 19 and clamping extension base 21 instead of an interchangeable blade 16 (see Fig. 8) with a rectangular cross-section a plate-shaped adapter 40 with the same cross section the interchangeable blade 16 in the clamping gap SP used.

    Der plättchenförmige Adapter 40 weist in mittiger Anordnung einen mit den beiden nutartigen Einschnitten 36 fluchtenden, nach vorn offenen, in Axialrichtung durch Zentriervorsprünge 41 hinterschnittenen Adapterschlitz 42 auf. Die Zentriervorsprünge 41 greifen seitlich in die Ringnut 39 ein.The plate-shaped adapter 40 has in the middle Arrangement one with the two groove-like incisions 36 aligned, open to the front, in Axial direction undercut by centering projections 41 Adapter slot 42 on. The centering projections 41 engage laterally in the annular groove 39.

    Die rückwärtige Stirnfläche 50 des plättchenförmigen Adapters 40 stößt gegen den rückwärtigen Anschlag 49 am axialen Ende der Rastnutgrundfläche 48. Die vordere Stirnfläche 51 des Adapters 40 ist mit dem vorderen freien Ende 17 des Klemmfortsatzes 13 bündig.The rear end face 50 of the platelet-shaped Adapter 40 abuts the rear stop 49 at the axial end of the locking groove base surface 48. The front end face 51 of the adapter 40 is with the front free end 17 of the clamping extension 13 flush.

    Die Montage der in Fig. 9 und 10 gezeigten Anordnung verläuft wie folgt: Der Rundschaft 37 wird von oben her in den Adapterschlitz 42 eingelegt, so daß die Zentriervorsprünge 41 in die Ringnut 39 eingreifen können. Diese Anordnung wird sodann von vorn in den offenen Klemmspalt SP eingeschoben, wonach die Zustellverschiebung des Schiebers 15 in Schieberichtung z erfolgt.The assembly of the arrangement shown in FIGS. 9 and 10 proceeds as follows: The round shaft 37 is inserted into the adapter slot 42 from above, see above that the centering projections 41 engage in the annular groove 39 can. This arrangement is then from the beginning inserted into the open clamping gap SP, after which the Infeed displacement of the slide 15 in the sliding direction z is done.

    Bezüglich der Fig. 1-4 sei noch ergänzt, daß beim Öffnen des Klemmspaltes SP durch eine Öffnungsbewegung des Schiebers 15 samt Rastarm 28 mit Rastende 32 in Richtung w das Riegelende 43 einer Magazinklappe 44 freigegeben wird, die daraufhin um einen Rastlagerzapfen 45 herum in ihre Offenstellung gemäß Fig. 4 schwenkbar ist. Der Magazinhohlraum 46, dessen Entnahmeöffnung 47 gemäß Fig. 3 mittels der Klappe 44 verschlossen ist, dient der Aufnahme von Ersatzklingen 16.With regard to FIGS. 1-4, it should be added that when opening the clamping gap SP by an opening movement the slide 15 together with the locking arm 28 Locking end 32 in the direction w the bolt end 43 of a magazine flap 44 is released, which then a stop pin 45 around in its open position 4 is pivotable. The magazine cavity 46, the removal opening 47 of FIG. 3 by means of the Flap 44 is closed, is used to accommodate Replacement blades 16.

    Alle Bauteile des Griffs 11, auch der Schieber 15, bilden Spritzgußteile aus einem geeigneten Kunststoff.All components of the handle 11, including the slide 15, form injection molded parts from a suitable plastic.

    Claims (15)

    1. Knife (10) with an interchangeable blade (16), such as a burr removing knife for plastic parts or the like, having a handle body (11), the front handle region (12) of which together with a slide (15) forms a clamping gap (SP) with adjustable feed by means of wedge surfaces (22, 23) for receiving the interchangeable blade (16), characterized in that the front handle region (12) forms a freely projecting clamping extension (13) with a trapezoidal cross section, onto which is mounted, rear end (18) first, the slide (15) which has an undercut clamping groove (14) with a trapezoidal cross section, wherein clamping groove bottom surface (19) and the clamping extension bottom surface (21) directed towards the latter form the clamping gap (SP) between them, wherein clamping groove bottom surface (19) and clamping extension bottom surface (21), on the one hand, and both clamping groove side surfaces (22) and both corresponding clamping extension side surfaces (23), on the other hand, extend parallel to one another and wherein clamping extension (13) and clamping groove (14) taper continuously towards their front free ends (17, 20) in such a way that the clamping groove width (BN) and, correspondingly, also the width (BF) of the clamping extension (13) continuously decrease towards the front free ends (20; 17) of the slide (15) and the clamping extension (13).
    2. Knife according to claim 1, characterized in that the clamping groove height (HN) and, correspondingly, the height (HF) of the clamping extension (13) continuously decrease towards the front free ends (20; 17) of the slide (15) and the clamping extension (13).
    3. Knife according to claim 1 or according to claim 2, characterized in that the slide (15) is closed in an annular manner at least in an axial region.
    4. Knife according to claim 3, characterized in that the slide (15) is closed in an annular manner by means of a cohesively connected web (25) disposed in its rear region (at 18) and bridging the clamping groove (14).
    5. Knife according to claim 4, characterized in that the web (25) projects upwards transversely away from the clamping groove (14) and takes the form of a slide handle.
    6. Knife according to one of claims 1 to 5, characterized in that clamping groove bottom surface (19) and clamping extension bottom surface (21) have an overlength compared to the axial length of the interchangeable blade (16) such that the interchangeable blade (16) may be entirely received and clamped in an axially retracted position inside the clamping gap (SP).
    7. Knife according to claim 6, characterized in that the slide (15) has an inspection opening (31) penetrating the slide wall (30) in the region of the clamping groove bottom surface (19).
    8. Knife according to one of claims 1 to 7, characterized in that the slide (15) has at least one detent arm (28) projecting backwards from its rear end (18) and latchable with axial play (35) in the front handle region (12).
    9. Knife according to claim 8, characterized in that the slide (15) has only one detent arm (28), which extends substantially parallel to the clamping extension (13), may spring in at right angles to the knife longitudinal axis (x) and has a detent end (32) in the shape of a hammer head, which is latchable with axial play (35) into a detent groove (34) having axial stops (33) in its front end.
    10. Knife according to one of claims 1 to 9, characterized in that adjoining the rear end (at 18) of the clamping groove bottom surface (19) in a flush manner is an interchangeable blade guide surface (29), which is formed by the broad surface of the detent arm (28) directed towards the clamping extension bottom surface (21).
    11. Knife according to claim 9 or according to claim 10, characterized in that the detent groove bottom surface (48) is connected in a flush manner to the clamping extension bottom surface (21) and terminates at a rear stop (49).
    12. Knife according to one of claims 1 to 11, characterized in that clamping groove bottom surface (19) and clamping extension bottom surface (21) each have a centrally disposed, axially extending, groove-like recess (36) with a substantially semicircular cross section for receiving the round shank (37) of a round-shank burr removing blade (38).
    13. Knife according to claim 12, characterized in that between clamping groove bottom surface (19) and clamping extension bottom surface (21), instead of an interchangeable blade (16) with a rectangular cross section, a plate-shaped adapter (40) of the same cross section is insertable for supporting the round shaft (37).
    14. Knife according to claim 13, characterized in that the plate-shaped adapter (40) has a centrally arranged adapter slot (42), which is aligned with the two groove-like recesses (36), open towards the front and undercut in an axial direction.
    15. Knife according to one of claims 11 to 14, characterized in that the rear end face (50) of the plate-shaped adapter (40) abuts the rear stop (49) at the axial end of the detent groove bottom surface (48), while the front end face (51) of the plate-shaped adapter (40) is aligned with the front free end (17) of the clamping extension (13).
    EP95112339A 1994-10-07 1995-08-05 Knife with exchangeable blade such as a deburring knife for plastic components or the like Expired - Lifetime EP0707925B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE4435807A DE4435807C1 (en) 1994-10-07 1994-10-07 Knife with removable blade
    DE4435807 1994-10-07

    Publications (2)

    Publication Number Publication Date
    EP0707925A1 EP0707925A1 (en) 1996-04-24
    EP0707925B1 true EP0707925B1 (en) 1998-04-22

    Family

    ID=6530151

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP95112339A Expired - Lifetime EP0707925B1 (en) 1994-10-07 1995-08-05 Knife with exchangeable blade such as a deburring knife for plastic components or the like

    Country Status (4)

    Country Link
    US (1) US5647132A (en)
    EP (1) EP0707925B1 (en)
    DE (1) DE4435807C1 (en)
    ES (1) ES2117336T3 (en)

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    DE10325214A1 (en) * 2003-06-04 2004-12-30 Martor Kg knife

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    DE4435807C1 (en) * 1994-10-07 1995-05-24 Beermann Kg Martor Argentax Knife with removable blade
    WO2001051135A1 (en) * 2000-01-14 2001-07-19 Stx Llc. Golf club having replaceable striking surface attachments and method for replacing same
    US6543140B1 (en) * 2000-07-05 2003-04-08 Adco Industries Utility knife having improved blade carrier structure and method of manufacture thereof
    US20060118998A1 (en) * 2004-12-07 2006-06-08 Kenneth Meacham Putter-type club head with an insert and method of manufacturing
    US20080153619A1 (en) * 2006-11-21 2008-06-26 Tucker Richard B C Golf Club Having A Cam-Locked Insert
    ATE514533T1 (en) 2007-04-16 2011-07-15 Adco Ind A Subsidiary Of Dallco Marketing Inc CUTTING RIGID AND SEMI-RIGID MATERIAL
    US8201336B2 (en) 2008-05-02 2012-06-19 Olympia Tools International, Inc. Retractable utility knife
    US8793881B2 (en) 2008-08-15 2014-08-05 Stanley Black & Decker, Inc. Utility knife with blade lock
    US8695221B2 (en) 2008-08-21 2014-04-15 Wen Hao Utility knife with extended travel carriage
    US8056241B2 (en) * 2008-10-13 2011-11-15 ADCO Industries—Technologies, L.P. Utility cutter
    US8307556B2 (en) * 2009-06-19 2012-11-13 ADCO Industries—Technologies, L.P. Utility cutter
    US8782909B1 (en) 2013-02-12 2014-07-22 ADCO Industries—Technologies, L.P. Utility cutter
    US9630328B2 (en) * 2014-06-25 2017-04-25 Benchmade Knife Co., Inc. Folding tool adapted for simple assembly and disassembly
    USD941653S1 (en) * 2020-05-15 2022-01-25 Slice, Inc. Deburring tool

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    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10325214A1 (en) * 2003-06-04 2004-12-30 Martor Kg knife

    Also Published As

    Publication number Publication date
    EP0707925A1 (en) 1996-04-24
    DE4435807C1 (en) 1995-05-24
    US5647132A (en) 1997-07-15
    ES2117336T3 (en) 1998-08-01

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