DE10109990B4 - Method for easily producing holes, v.a. for long-chipping materials and large recess depths - Google Patents

Method for easily producing holes, v.a. for long-chipping materials and large recess depths Download PDF

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Publication number
DE10109990B4
DE10109990B4 DE10109990A DE10109990A DE10109990B4 DE 10109990 B4 DE10109990 B4 DE 10109990B4 DE 10109990 A DE10109990 A DE 10109990A DE 10109990 A DE10109990 A DE 10109990A DE 10109990 B4 DE10109990 B4 DE 10109990B4
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feed
tool
long
recess depths
large recess
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Expired - Fee Related
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DE10109990A
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German (de)
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DE10109990A1 (en
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Felix Leeb
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
    • B23B47/34—Arrangements for removing chips out of the holes made; Chip- breaking arrangements attached to the tool

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

Verfahren zur Herstellung von Bohrungen insbesondere bei langspanenden Materialien und großen Ausnehmungstiefen mittels eines drehangetriebenen Bohrwerkzeuges auf CNC gesteuerten Maschinen dadurch gekennzeichnet, dass der Werkzeugvorschub beim Bohrvorgang in abwechselnder Wiederholung unterbrochen wird, wobei dieser Vorgang bis zu der zu erstellenden Ausnehmungstiefe wiederholt wird.method for the production of bores, in particular for long-chipping materials and big ones Recess depths by means of a rotary driven drilling tool On CNC machines characterized in that the tool feed interrupted during the drilling process in alternating repetition, this process being up to the recess depth to be created is repeated.

Description

Die Erfindung bezieht sich auf ein Verfahren zur problemlosen Herstellung von Bohrungen, v.a. bei langspanenden Materialien und großen Ausnehmungstiefen. Bei der Erstellung von Bohrungen in langspanende Materialien besteht derzeit das Problem, dass die Bohrspäne nicht brechen, wodurch sich dann diese um das Bohrwerkzeug wickeln. Dies führt zu einem Spänestau. Um dies zu verhindern, wird derzeit beim Bohrvorgang dieser ca. alle 5 mm Bohrtiefe unterbrochen. Dabei wird das Bohrwerkzeug jeweils auf den Startpunkt (gleich Ausgangspunkt) zurückgefahren um somit die Späne aus der Bohrung zu entfernen und v.a. auch die Späne vom Bohrwerkzeug zu entfernen. Dabei gelingt dies nicht immer, womit dies dann zusätzlich von einem Bedienungsmann durch einen Spänehacken unterstützt werden muss. Dieses Entspänungsverfahren wird auch derzeit bei der Erstellung von tiefen Bohrungen in fast allen Materialien angewendet.The The invention relates to a method for easy production of holes, v.a. for long-chipping materials and large recess depths. When creating holes in long-chipping materials exists currently the problem is that the drill chips do not break, resulting in then wrap these around the drill tool. This leads to a chip accumulation. In order to prevent this, currently during the drilling process this approx. interrupted every 5 mm drilling depth. This is the drilling tool respectively back to the starting point (equal to the starting point) so that the chips from the hole to remove and v.a. also to remove the chips from the drilling tool. This does not always succeed, which then in addition of an operator be supported by a chips hacking got to. This relaxation process is also currently in the creation of deep holes in almost applied to all materials.

Aus der Offenlegungsschrift DE 19904117 A1 ist ein Bohrverfahren zur Herstellung insbesondere von kleiner Bohrungsausnehmungen im Bereich 0,5 mm und kleiner von drehangetriebenen Bohrwerkzeugen auf CNC Maschinen bekannt. Dabei wird das hier zum Zwecke der Entspanung nach einigen Bohrvorgangsumdrehungen das Werkzeug auf die Ausgangsstellung (Startpunkt) zurückgezogen, womit dieses Verfahren keinerlei Hinweise auf Bohrverfahren (gleich intervalles Bohrverfahren) zum Zweck der Erzeugung von nur sehr kurzen Bohrspänen erbringt.From the publication DE 19904117 A1 For example, a drilling method is known for making small bore recesses in the range of 0.5 mm and smaller of rotary drilling tools on CNC machines. Here, the tool is hereby withdrawn to the initial position (starting point) for the purpose of relaxation after a few drilling revolutions, so this method provides no evidence of drilling method (equal intervals Bohrverfahren) for the purpose of generating only very short drill shavings.

Der Erfindung liegt die Aufgabe zugrunde, ein Bohrverfahren zu entwickeln, mit dem all diese Probleme gelöst werden können. Diese Aufgabe wird erfindungsgemäß im wesentlichen mit dem Verfahrensanspruch 1 gelöst. Weitere Verbesserungen in den Ansprüchen 2 und 3.Of the Invention has for its object to develop a drilling method with all these problems solved can be. This object is achieved according to the invention substantially solved with the method claim 1. Further improvements in claims 2 and 3.

In erfindungsmäßiger Weise wird vorgeschlagen, ausgehend von einer Unterbrechung des Bohrvorganges diesen ca. alle zwei Umdrehungen zu wiederholen, wobei die Unterbrechung nur ca. 1 Werkzeugumdrehung beträgt. Dadurch werden nur kurze Späne erzeugt mit dem Vorteil, dass sich keine Späne um das Bohrwerkzeug wickeln können und auch diese durch innere Kühlmittelzufuhr (Emission oder auch nur Pressluft) dann prozesssicher vom jeweiligen Bohrungsgrund nach außen befördert werden. Dieses Verhältnis 2:1 ist auch abhängig vom zu bearbeitenden Material. D.h. es könnte auch das Verhältnis 1:0,5 – 1:1 – 2:1,5 – 2,5:1 – 3:1 – 4:1 usw. zur Anwendung kommen. Dabei kann dieses Verhältnis auch noch auf die jeweilige zu bearbeitende Einsatztiefe abgestellt sein, d.h. im oberen Bereich der Bohrung z.B. ca. 3:1 im mittleren Bereich ca. 2:1 und im unteren Bereich ca. 1:1 (jeweilige Erfahrungswerte einsetzen). Dabei kann der Übergang zu diesen Werten auch fast stufenlos erfolgen (gleich immer der fortschreitenden Ausnehmungstiefe angepasst).In inventive way is proposed, starting from an interruption of the drilling process repeat this approximately every two turns, with the interruption only approx. 1 tool revolution. This will only short chips produced with the advantage that no chips wrap around the drill can and these also by internal coolant supply (Emission or even compressed air) then process reliable from the respective Bore ground to the outside promoted become. This ratio 2: 1 is also dependent of the material to be processed. That it could also be the ratio 1: 0.5 - 1: 1 - 2: 1.5 - 2.5: 1 - 3: 1 - 4: 1 etc. come into use. This relationship can also on the respective used depth to be processed, i. in the upper area the bore e.g. about 3: 1 in the middle area about 2: 1 and in the lower one Range approx. 1: 1 (use respective empirical values). It can the transition These values are also almost infinitely variable (always the same Recess depth adjusted).

Diese Erfindung wird anhand einer Beispielbeschreibung vorgestellt:
Werkstoff St. 37
Werkzeug dreischneidige M-Schneide
Durchmesser 25mm Schnittgeschwindigkeit 157m/min
Drehzahl 2000U/min
Vorschub pro Umdrehung 0,36mm → Vorschub/min von 0,36 × 2000 = 720mm abzüglich 1/3 wg. Vorschubabschaltung im Verhältnis 2:1 → 480 mm Vorschub/minThis invention is presented by way of example description:
Material St. 37
Tool three-edged M-edge
Diameter 25mm cutting speed 157m / min
Speed 2000rpm
Feed per revolution 0.36 mm → feed / min of 0.36 × 2000 = 720 mm less 1/3 wg. Feed cutoff in the ratio 2: 1 → 480 mm feed / min

Diese Werte, zeitlich übertragen, können mit dem Auge nicht wahrgenommen werden, da die Zeit der Vorschubabschaltung bei diesem Beispiel nur 0,03 sec beträgt.These Values, timed, can can not be perceived by the eye, because the time of the feed shutdown in this example is only 0.03 sec.

Claims (3)

Verfahren zur Herstellung von Bohrungen insbesondere bei langspanenden Materialien und großen Ausnehmungstiefen mittels eines drehangetriebenen Bohrwerkzeuges auf CNC gesteuerten Maschinen dadurch gekennzeichnet, dass der Werkzeugvorschub beim Bohrvorgang in abwechselnder Wiederholung unterbrochen wird, wobei dieser Vorgang bis zu der zu erstellenden Ausnehmungstiefe wiederholt wird.Method for producing bores, in particular in the case of long-chipping materials and large recess depths, by means of a rotary-driven boring tool on CNC-controlled machines, characterized in that the tool feed is interrupted during the drilling process in an alternating repetition, this process being repeated up to the recess depth to be created. Verfahren zur Herstellung von Bohrungen nach Anspruch 1 dadurch gekennzeichnet, dass der Werkzeugvorschub zur Vorschubunterbrechung im Verhältnis von ca. 2:1 abläuft, d.h. zwei Werkzeugumdrehungen mit Vorschub und anschl. ca. eine Werkzeugumdrehung ohne Vorschub.Method for producing bores according to claim 1, characterized in that the tool feed to the feed interruption in relation to 2: 1 expires, i.e. Two tool revolutions with feed and then approx. one tool revolution without feed. Verfahren zur Herstellung von Bohrungen nach Anspruch 1–2 dadurch gekennzeichnet, dass das Verhältnis Werkzeugvorschub zu Vorschubunterbrechung auf die jeweilige Einsatztiefe als auch auf das zu bearbeitenden Material angepasst ist.Method for producing bores according to claim 1-2 by characterized in that the ratio Tool feed to feed interruption to the respective depth of use as well as adapted to the material to be processed.
DE10109990A 2001-03-02 2001-03-02 Method for easily producing holes, v.a. for long-chipping materials and large recess depths Expired - Fee Related DE10109990B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10109990A DE10109990B4 (en) 2001-03-02 2001-03-02 Method for easily producing holes, v.a. for long-chipping materials and large recess depths

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Application Number Priority Date Filing Date Title
DE10109990A DE10109990B4 (en) 2001-03-02 2001-03-02 Method for easily producing holes, v.a. for long-chipping materials and large recess depths

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DE10109990A1 DE10109990A1 (en) 2002-09-19
DE10109990B4 true DE10109990B4 (en) 2005-01-13

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10236802C1 (en) * 2002-08-10 2003-10-09 Felix Leeb Bore thread cutter, suitable for steel, has end cutting region with centering tip at around 140 degrees bounding cutting region at 160 degrees, cutting region at 45 degrees and chamfering region
DE10334454B3 (en) * 2002-08-10 2005-05-12 Felix Leeb Bohrgewindefräser which is also suitable for use in steel
DE10335020A1 (en) * 2003-07-24 2005-03-24 Topf, Ernst, Ing. Spindelpulsator
FR2890581B1 (en) * 2005-09-14 2009-03-06 Airbus France Sas DRILLING DEVICE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904117A1 (en) * 1998-02-02 1999-08-05 Toshiba Machine Co Ltd Process for boring holes in workpiece

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904117A1 (en) * 1998-02-02 1999-08-05 Toshiba Machine Co Ltd Process for boring holes in workpiece

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