DE2937603C2 - Chucks for machine tools, in particular drilling machines - Google Patents
Chucks for machine tools, in particular drilling machinesInfo
- Publication number
- DE2937603C2 DE2937603C2 DE19792937603 DE2937603A DE2937603C2 DE 2937603 C2 DE2937603 C2 DE 2937603C2 DE 19792937603 DE19792937603 DE 19792937603 DE 2937603 A DE2937603 A DE 2937603A DE 2937603 C2 DE2937603 C2 DE 2937603C2
- Authority
- DE
- Germany
- Prior art keywords
- clamping sleeve
- sheet metal
- metal part
- chuck
- sleeve
- 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
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
- B23B31/1238—Jaws movement actuated by a nut with conical screw-thread
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Jigs For Machine Tools (AREA)
Description
Die Erfindung geht aus von einem Spannfutter nach der Gattung des Hauptanspruchs. Ein solches Spannfutter ist bekannt aus der De-AS 23 35 865. Die Spannhülse dieses Spannfutters ist durch spanabhebende Bearbeitung eines Rohrabschnittes hergestellt. Das ist verhältnismäßig aufwendig und auch wegen des entstehenden Abfalles teuer.The invention is based on a chuck according to the preamble of the main claim. Such a chuck is known from DE-AS 23 35 865. The clamping sleeve of this chuck is made by machining a pipe section produced. This is relatively complex and also because of the resulting Waste expensive.
Der Erfindung liegt die Aufgabe zugrunde, ein Spannfutter mit einer Spannhülse zu schaffen, die spanlos und mit geringem Fertigungsaufwand herstellbar ist und dabei eine hohe Festigkeit hat. Das erfindungsgemäße Spannfutter mit den kennzeichnenden Merkmalen des Hauptanspruchs löst diese Aufgabe. Die durch das Walzen des Blechs verdichtete Materialstruktur wird durch das Rollen weiter verdichtet und damit fester als die eines Drehteils. Dabei ist die spanlose Fertigung weit billiger. Eine eventuell erforderliche Profilierung der Spannhülse kann in weiterer Ausbildung des Erfindungsgegenstandes durch Prägen vor dem Rollen erfolgen. The invention is based on the object of creating a chuck with a clamping sleeve that is chipless and Can be produced with little manufacturing effort and at the same time has a high level of strength. The inventive Chuck with the characterizing features of the main claim solves this problem. The one through the rolling The compacted material structure of the sheet is further compacted by rolling and thus more solid than the of a turned part. Non-cutting production is much cheaper. Any necessary profiling of the In a further development of the subject matter of the invention, clamping sleeve can be made by embossing before rolling.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Es zeigtAn embodiment of the invention is shown in the drawing. It shows
F i g. 1 das Bohrfutter einer Bohrmaschine im Längsschnitt, F i g. 1 the chuck of a drilling machine in longitudinal section,
F i g. 2 ein zur Bildung der Spannhülse des Bohrfutters nach F i g. 1 dienendes Blechteil undF i g. 2 to form the clamping sleeve of the drill chuck according to FIG. 1 serving sheet metal part and
F i g. 3 einen Schnitt durch das Blechteil nach F i g. 2 entlang der Linie IH-III.F i g. 3 shows a section through the sheet metal part according to FIG. 2 along the line IH-III.
Das Bohrfutter besteht aus einem etwa zylindrischen Grundkörper 10 mit einer zentralen Bohrung 11 zur Aufnahme eines Werkzeugs, z. B. eines Bohrers. Zum Festspannen des Werkstücks dienen nicht dargestellte Backen, die in mehreren schrägen Bohrungen 12 des Grundkörpers 10 gleitend angeordnet sind. Zum Verschieben der Backen ist ein radial geteilter Gewindering 13 vorgesehen, der ein Innengewinde 14 hat, welches in ein Außengewinde der Backen greift. Der Gewindering 13 ist mit einer Spannhülse 15 z. B. durch radiales Stauchen mittels elektromagnetischer oder mechanischer Umformung oder durch Aufpressen fest verbunden. Die Spannhülse 15 greift ein stückweit über den Gewindering 13, der an seiner Stirnseite einen Zahnkranz 16 hat, in den ein handbetätigtes Ritzel zum Spannen des Werkzeugs einzugreifen vermag. Die Spannhülse 15 reicht über den ganzen hinteren Teil des Grundkörpers 10 und schließt diesen samt der Verstelleinrichtung für die Backen dicht ab.The chuck consists of an approximately cylindrical base body 10 with a central bore 11 for Pick-up of a tool, e.g. B. a drill. Not shown are used to clamp the workpiece Jaws which are slidably arranged in several inclined bores 12 of the base body 10. To move the jaw a radially split threaded ring 13 is provided, which has an internal thread 14, which in an external thread of the jaw engages. The threaded ring 13 is provided with a clamping sleeve 15 z. B. by radial upsetting firmly connected by means of electromagnetic or mechanical deformation or by pressing. the Clamping sleeve 15 engages a little over the threaded ring 13, which has a toothed ring 16 on its end face, into which a hand-operated pinion can engage to clamp the tool. The adapter sleeve 15 extends over the entire rear part of the base body 10 and closes this together with the adjustment device for the cheeks tightly.
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792937603 DE2937603C2 (en) | 1979-09-18 | 1979-09-18 | Chucks for machine tools, in particular drilling machines |
GB8026980A GB2059309B (en) | 1979-09-18 | 1980-08-19 | Chucks for machine tools |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792937603 DE2937603C2 (en) | 1979-09-18 | 1979-09-18 | Chucks for machine tools, in particular drilling machines |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2937603A1 DE2937603A1 (en) | 1981-04-02 |
DE2937603C2 true DE2937603C2 (en) | 1986-09-25 |
Family
ID=6081109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19792937603 Expired DE2937603C2 (en) | 1979-09-18 | 1979-09-18 | Chucks for machine tools, in particular drilling machines |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2937603C2 (en) |
GB (1) | GB2059309B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7073992B2 (en) | 2003-06-24 | 2006-07-11 | Irwin Industrial Tool Company | Arbor for hole cutter and related method of use |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2335865C3 (en) * | 1973-07-14 | 1975-12-18 | Metabowerke Kg, Closs, Rauch & Schnizler, 7440 Nuertingen | Chuck for impact drills or hammer drills |
-
1979
- 1979-09-18 DE DE19792937603 patent/DE2937603C2/en not_active Expired
-
1980
- 1980-08-19 GB GB8026980A patent/GB2059309B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB2059309B (en) | 1983-03-02 |
DE2937603A1 (en) | 1981-04-02 |
GB2059309A (en) | 1981-04-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8120 | Willingness to grant licences paragraph 23 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |