DE41741C - Drill chuck for twist drills with cutting edges on both ends - Google Patents
Drill chuck for twist drills with cutting edges on both endsInfo
- Publication number
- DE41741C DE41741C DENDAT41741D DE41741DA DE41741C DE 41741 C DE41741 C DE 41741C DE NDAT41741 D DENDAT41741 D DE NDAT41741D DE 41741D A DE41741D A DE 41741DA DE 41741 C DE41741 C DE 41741C
- Authority
- DE
- Germany
- Prior art keywords
- drill
- cutting edges
- drill chuck
- twist drills
- twist
- 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.)
- Active
Links
- 210000003128 Head Anatomy 0.000 claims description 6
- 210000001847 Jaw Anatomy 0.000 claims description 3
- 239000007779 soft material Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000000284 resting Effects 0.000 description 1
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
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
- B23B31/16158—Jaws movement actuated by coaxial conical surfaces
- B23B31/16162—Details of the jaws
- B23B31/16166—Form of the jaws
-
- 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
- B23B31/008—Chucks; Expansion mandrels; Adaptations thereof for remote control with arrangements for transmitting torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/24—Overall form of drilling tools
- B23B2251/247—Drilling tools having a working portion at both ends of the shank
Description
KAISERLICHESIMPERIAL
PATENTAMTPATENT OFFICE
Diese Erfindung bezieht sich auf Verbesserungen in der Construction und Herstellung von Haltern oder Futtern für Spiralbohrer mit Schneidkanten an beiden Enden. Bohrer dieser Art erlangten bisher eine allgemeinere Verwendung nicht, weil es sehr schwierig war, zweckmäfsige Halter oder Futter für dieselben zu rinden; denn bei den bisher gebräuchlichen Haltern war man der Gefahr ausgesetzt, dafs die obere Schneide beschädigt wurde, oder dafs der Bohrer sich während der Arbeit drehte. Die vorliegende Erfindung besteht nun darin, diese Halter in solcher Weise zu construiren, dafs die obere Schneide nicht beschädigt wird, wenn sie aufser Gebrauch steht, und gleichzeitig der Bohrer während der Arbeit festgehalten wird.This invention relates to improvements in construction and manufacture of holders or chucks for twist drills with cutting edges on both ends. Drill this one Art have not yet achieved a more general use because it was very difficult to find appropriate ones To bark keepers or fodder for them; because with the previously used ones Holders were exposed to the risk of damaging the upper cutting edge, or that the drill turned while working. The present invention now exists in constructing these holders in such a way that the upper edge is not damaged when it is in use, and at the same time the drill during work is being held.
In der beiliegenden Zeichnung stellt Fig. 1 einen Spiralbohrer mit zwei Schneidenden dar.In the accompanying drawing, Fig. 1 shows a twist drill with two cutting ends.
Die Fig. 2 und 3 sind bezw. ein Aufrifs und ein Grundrifs des neuen Bohrfutters.Figs. 2 and 3 are respectively. a profile and a basic profile of the new drill chuck.
Fig. 4 ist ein Schnitt nach der Linie A-B in der Fig. 2 undFig. 4 is a section along the line AB in Fig. 2 and
Fig. 5 ein Schnitt entlang C-D der Fig. 4.FIG. 5 shows a section along CD in FIG. 4.
Fig. 6 und 7 sind Schnitte nach den Linien E-F und G-H der Fig. 5 bezw. 6.6 and 7 are sections along the lines EF and GH of FIG. 6th
In den Fig. 5, 6 und 7 ist der Bohrer in seinem Futter zur Verwendung bereit dargestellt. In Figures 5, 6 and 7 the drill is shown in its chuck ready for use.
Die gleichen Buchstaben bezeichnen dieselben Theile in allen Figuren.The same letters denote the same parts in all the figures.
Der in Fig. 1 dargestellte Bohrer hat die gewöhnliche Form der Spiral- oder Drehbohrer mit parallelen oder nahezu parallelen Seiten, jedoch hat er an beiden Enden je eine Schneidkante.The drill shown in Fig. 1 has the usual shape of the twist or rotary drill with parallel or nearly parallel sides, but it has one at each end Cutting edge.
Um den doppelendigen Drehbohrer festzuhalten, wenn derselbe im Gebrauche ist und die Schneide (welche nicht in Benutzung steht) nicht zu beschädigen, hat Erfinder den in Fig. 2 bis 7 dargestellten Halter construirt, welcher wesentlich aus einem Bohrkopf J besteht, der die Oese für die Spindeldocke trägt, in welche ein Ende des Drehbohrers eingesetzt ist.To retain the double ended rotary drill bit when the same is in the use and the cutting edge (not which in use is) not to damage inventor has constructed the holder shown in Fig. 2 to 7, which consists essentially of a drilling head J, of the eye for carries the spindle dock, in which one end of the rotary drill is inserted.
Der Bohrkopf centrirt sich selbst mittelst gleitender Backen K K, die durch eine äufsere, mit Gewinden versehene Hülse L bewegt werden, die eine kegelförmige Mündung hat, um sich den verschiedenen Gröfsen der Bohrer anzupassen.The drill head centers itself by means of sliding jaws KK, which are moved by an outer, threaded sleeve L , which has a conical mouth, in order to adapt to the different sizes of the drill.
Die Gleitbacken KK können einfach den Umfang des Bohrers umfassen und festhalten; Erfinder zieht es aber vor, sie mit einem oder mehreren Vorsprüngen AfM herzustellen, welche bestimmt sind, in eine oder beide Rinnen oder Nuthen des Bohrers einzugreifen, um ein Drehen desselben im Bohrkopfe während des Bohrens zu verhindern, während sie gleichzeitig seine Schneiden von dem metallenen Halter frei halten. Die Vorsprünge MM an den Backen K K drücken entweder selbst an die Seiten der Bohrernuthen, oder- es sind eine oder mehrere cylindrische oder kugelförmige Rollen dazwischen gelagert, wie durch N in den Fig. 6 und 7 angedeutet ist.The sliding blocks KK can simply encompass and hold the circumference of the drill; However, the inventor prefers to manufacture them with one or more projections AfM, which are intended to engage in one or both grooves or flutes of the drill in order to prevent the same from turning in the drill head during drilling, while at the same time removing its cutting from the metal Keep holder free. The projections MM on the jaws KK either press themselves against the sides of the drill flutes, or one or more cylindrical or spherical rollers are supported between them, as indicated by N in FIGS. 6 and 7.
Das obere schneidende Ende des Bohrers, welches in dem Werkzeughalter gehalten wird, ruht in einem Loche von entsprechender Tiefe und Kegelform am Boden des Bohrkopfes und ist vorzugsweise in ein Stück O aus Kupfer oder anderem weichen Material am Boden des Bohrkopfes eingebettet.The upper cutting end of the drill which is held in the tool holder, resting in a hole of appropriate depth and cone shape at the bottom of the drill head and is preferably embedded in a piece O of copper or other soft material at the bottom of the drill head.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE41741C true DE41741C (en) |
Family
ID=317195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT41741D Active DE41741C (en) | Drill chuck for twist drills with cutting edges on both ends |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE41741C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2543044A1 (en) * | 1983-03-21 | 1984-09-28 | Hilti Ag | CORE FOR DRILLING WITH PERCUSSION |
-
0
- DE DENDAT41741D patent/DE41741C/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2543044A1 (en) * | 1983-03-21 | 1984-09-28 | Hilti Ag | CORE FOR DRILLING WITH PERCUSSION |
DE3310146A1 (en) * | 1983-03-21 | 1984-10-04 | Hilti Ag, Schaan | DRILL CHUCK FOR PERFORMANCE |
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