DE684469C - Drill head adjustable by means of an eccentric movement - Google Patents
Drill head adjustable by means of an eccentric movementInfo
- Publication number
- DE684469C DE684469C DEH154650D DEH0154650D DE684469C DE 684469 C DE684469 C DE 684469C DE H154650 D DEH154650 D DE H154650D DE H0154650 D DEH0154650 D DE H0154650D DE 684469 C DE684469 C DE 684469C
- Authority
- DE
- Germany
- Prior art keywords
- drill head
- eccentric movement
- tool holder
- head adjustable
- boring bar
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/03—Boring heads
- B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
- B23B29/03403—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing
- B23B29/03428—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing by means of an eccentric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/088—Indication scales
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Description
Es sind Bohrstangen bekannt, die einenBoring bars are known to have one
ringförmigen, auf einem außermittigen Kegel sitzenden Werkzeughalter haben, durch dessen Verdrehen der Schneidstahl verstellt werden kann.have annular, seated on an eccentric cone tool holder, through its Twisting the cutting steel can be adjusted.
Die hier beschriebene Anordnung zeigt eine Verbesserung derartiger Bohrstangen, durch welche die Handhabung vereinfacht und die Genauigkeit der Arbeit erhöht wird. Durch Festziehen nur einer einzigen Mutter wird nämlich nicht hut der Werkzeughalter mit dem Schneidstahl unverrückbar auf seinem kegeligen Sockel festgesetzt, sondern der letztere auch auf der Bohrstange. Kleine! Ungenauigkeiten im Durchmesser der Bohrstange werden damit unschädlich gemacht. Die Bohrstange darf also etwas dünner gehalten werden, so daß sie sich leicht aus dem Bohrkopf herausziehen läßt. Dadurch wird das Auswechseln des Bohrkopfes erleichtert.The arrangement described here shows an improvement of such drill rods, by which the handling is simplified and the accuracy of the work is increased. Tightening just a single nut does not break the tool holder fixed immovably on its conical base with the cutting steel, but rather the latter also on the boring bar. Small! Inaccuracies in the diameter of the boring bar are thus rendered harmless. The boring bar can therefore be kept a little thinner so that it can be easily pulled out of the drill head. This will making it easier to change the drill head.
Ein Ausführungsbeispiel des neuen Bohrkopfes ist auf der Zeichnung dargestellt. An embodiment of the new drill head is shown in the drawing.
Abb. ι zeigt einen Bohrkopf im Längsschnitt;
Abb. 2 ist eine äußere Ansicht undFig. Ι shows a drill head in longitudinal section;
Fig. 2 is an external view and
Abb. 3. die obere Ansicht.Fig. 3. the top view.
Der Sockel 1 wird mit seiner Bohrung auf die Bohrstange geschoben und mittels des durchgehenden Bolzens 2 befestigt. Der Sockel ι trägt einen vorzugsweise kegeligen Zapfen 3, der um das geringe Maß e gegenüber der Mitte der Bohrung versetzt ist. Diese Versetzung ist der Deutlichkeit halber übertrieben gezeichnet. In Wirklichkeit beträgt sie je nach dem gewünschten Verstellbereich 0,25 bis 0,5 mm.The base 1 is pushed with its bore onto the drill rod and fastened by means of the through bolt 2. The base ι carries a preferably conical pin 3, which is offset by the small amount e relative to the center of the bore. This offset is shown exaggerated for the sake of clarity. In reality, it is 0.25 to 0.5 mm, depending on the desired adjustment range.
Auf dem Kegelzapfen 3 sitzt drehbar der kegelig ausgebohrte Ring oder Werkzeughalter 4. In ihm ist der Schneidstahl 5 in bekannter Weise, beispielsweise durch eine Stellschraube 6 befestigt. Das freie Ende des Kegelzapfens 3 ist mit einem Gewinde versehen, auf dem die Mutter 7 sitzt. Diese Mutter preßt die kegeligen Flächen zusammen und hält den Werkzeughalter 4 auf dem Kegelzapfen 3 unverrückbar fest.The conically bored ring or tool holder is rotatably seated on the taper pin 3 4. In it, the cutting steel 5 is in a known manner, for example by a Adjusting screw 6 fastened. The free end of the taper 3 is threaded, on which the mother 7 sits. This nut presses the conical surfaces together and holds the tool holder 4 immovably on the taper pin 3.
Der Kegelzapfen 3 ist mit mehreren Schlitzen 8 versehen. Er biegt sich beim Festziehen der Mutter 7 unter dem Druck des Werkzeughalters 4 etwas durch und verbürgt so spielfreien Sitz auf der Bohrstange.The taper 3 is provided with several slots 8. It bends when tightened the nut 7 under the pressure of the tool holder 4 through something and guarantees backlash-free Seat on the boring bar.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH154650D DE684469C (en) | 1938-02-08 | 1938-02-08 | Drill head adjustable by means of an eccentric movement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH154650D DE684469C (en) | 1938-02-08 | 1938-02-08 | Drill head adjustable by means of an eccentric movement |
Publications (1)
Publication Number | Publication Date |
---|---|
DE684469C true DE684469C (en) | 1939-11-29 |
Family
ID=7181955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH154650D Expired DE684469C (en) | 1938-02-08 | 1938-02-08 | Drill head adjustable by means of an eccentric movement |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE684469C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE835544C (en) * | 1949-10-25 | 1952-04-03 | Ernst Denzel | Eccentrically adjustable boring tool for smooth boring bars |
DE1109982B (en) * | 1955-10-03 | 1961-06-29 | Neher Maschf A | Reinforcement ring for boring bars |
-
1938
- 1938-02-08 DE DEH154650D patent/DE684469C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE835544C (en) * | 1949-10-25 | 1952-04-03 | Ernst Denzel | Eccentrically adjustable boring tool for smooth boring bars |
DE1109982B (en) * | 1955-10-03 | 1961-06-29 | Neher Maschf A | Reinforcement ring for boring bars |
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