CH130735A - Drill especially for two and three-jaw chucks. - Google Patents
Drill especially for two and three-jaw chucks.Info
- Publication number
- CH130735A CH130735A CH130735DA CH130735A CH 130735 A CH130735 A CH 130735A CH 130735D A CH130735D A CH 130735DA CH 130735 A CH130735 A CH 130735A
- Authority
- CH
- Switzerland
- Prior art keywords
- drill
- shaft
- chucks
- jaw
- shank
- Prior art date
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
- B23B31/005—Cylindrical shanks of tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2231/00—Details of chucks, toolholder shanks or tool shanks
- B23B2231/02—Features of shanks of tools not relating to the operation performed by the tool
- B23B2231/0216—Overall cross sectional shape of the shank
- B23B2231/0232—Hexagonal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Description
Bohrer insbesondere fur zwei-und dreibackige Spannfutter.
Die Schäfte der bisherigen Bohrer sind in der Regel rund gestaltet, was jedoch nicht immer ein gutes Festhalten in einfachen
Spannfuttern gewährleistet.
Gegenstand der vorliegenden Erfindung ist nun ein Bohrer, insbesondere für zwei und dreibackige Spannfutter, durch welchen diese Nachteile vermieden werden sollen.
Gemäss der Erfiridung ist der obere Teil des
Schaftes mit in bezug auf die Oberflacbe des Schaftes zurückstehenden Angriffsflächen versehen.
Auf der beiliegenden Zeichnung ist der
Erfindungsgegenstand in einer beispielsweisen
Ausführungsform zur Darstellung gebracht, und es zeigt :
Fig. 1 eine Seitenansicht,
Fig. 2 einen Querschnitt und
Fig. 3 einen ebensolchen.
Nach der Zeichnung ist 1 der Schaft des Bohrers, dessen oberer Teil sechskantig ist und im Querschnitt gesehen die Form eines regelmässigen Sechseckes aufweist. Die An griffsBäehen 2 stehen in bezug auf die Ober fâche des Schaftes zurück. Dadurch ist ein gutes Angreifen der Klemmbacken möglich, was ein sicheres Festhalten in zwei-und dreibackigen Spannfuttern garantiert. Eine
Abnützung der Eckkanten hat auf das sichere
Festklemmen infolge der tief innen liegenden Angriffsflichen keinen nachteiligen EinfluB.
Fig. 2 und 3 zeigen Auwendungsbeispiele bei einem zweibackigen beziehungsweise drei backigen Spannfutter. 3 beziehungsweise 4 sind die Klemmbacken, welche teilsweise je an zwei aneinander zugekehrten Angriffs- flächen des Schaftes anliegen.
Der beschriebene Bohrer kann selbstver ständlich aber auch für Spannfutter verwendet werden, welche mehr als drei Klemmbacken aufweisen.
PATENTANSPRUCH :
Bohrer insbesondere für zwei-und dreibackige Spannfutter, dadurch gekennzeichnet, dass der obere Teil des Schaftes mit in bezug auf die Oberfläche des Schaftes zurückstehenden Angriffsflachen versehen ist.
**WARNUNG** Ende DESC Feld konnte Anfang CLMS uberlappen**.
Drills especially for two and three-jaw chucks.
The shanks of previous drills are usually round, which is not always easy to hold on to
Chucks guaranteed.
The present invention now relates to a drill, in particular for two and three-jaw chucks, by means of which these disadvantages are to be avoided.
According to the invention, the upper part of the
Shank provided with with respect to the upper surface of the shaft receding attack surfaces.
On the accompanying drawing is the
Subject matter of the invention in an exemplary manner
Embodiment shown, and it shows:
Fig. 1 is a side view,
Fig. 2 is a cross section and
3 shows a similar one.
According to the drawing, 1 is the shank of the drill, the upper part of which is hexagonal and, viewed in cross section, has the shape of a regular hexagon. The attack blades 2 are set back with respect to the surface of the shaft. This enables a good grip on the clamping jaws, which guarantees a secure hold in two- and three-jaw chucks. A
Wear of the corner edges has to be safe
Clamping as a result of the deep inside attack areas no disadvantageous influence.
2 and 3 show application examples with a two-jaw and three-jaw chuck, respectively. 3 and 4, respectively, are the clamping jaws, some of which each bear on two mutually facing engagement surfaces of the shaft.
The drill described can of course also be used for chucks which have more than three jaws.
PATENT CLAIM:
Drill, in particular for two- and three-jaw chucks, characterized in that the upper part of the shank is provided with engagement surfaces which are recessed with respect to the surface of the shank.
** WARNING ** End of DESC field could overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH130735T | 1928-02-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH130735A true CH130735A (en) | 1928-12-31 |
Family
ID=4389058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH130735D CH130735A (en) | 1928-02-28 | 1928-02-28 | Drill especially for two and three-jaw chucks. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH130735A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2504601A (en) * | 1947-12-30 | 1950-04-18 | Earl M Spry | Auger drill |
US3136347A (en) * | 1962-10-15 | 1964-06-09 | Greenlee Bros & Co | Drill bit shank |
FR2497713A1 (en) * | 1981-01-09 | 1982-07-16 | Stahl Sa Fils J | Universal wood bit fitting - has square and cylindrical sections on tail end for fitting hand braces or electric drill chucks |
EP1234628A3 (en) * | 2001-02-16 | 2004-06-23 | Robert Schröder GmbH & Co. KG | Clamping jaw |
-
1928
- 1928-02-28 CH CH130735D patent/CH130735A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2504601A (en) * | 1947-12-30 | 1950-04-18 | Earl M Spry | Auger drill |
US3136347A (en) * | 1962-10-15 | 1964-06-09 | Greenlee Bros & Co | Drill bit shank |
FR2497713A1 (en) * | 1981-01-09 | 1982-07-16 | Stahl Sa Fils J | Universal wood bit fitting - has square and cylindrical sections on tail end for fitting hand braces or electric drill chucks |
EP1234628A3 (en) * | 2001-02-16 | 2004-06-23 | Robert Schröder GmbH & Co. KG | Clamping jaw |
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