EP0462257B1 - Die chuck for multiple-cornered ends of tool spindles - Google Patents
Die chuck for multiple-cornered ends of tool spindles Download PDFInfo
- Publication number
- EP0462257B1 EP0462257B1 EP91902176A EP91902176A EP0462257B1 EP 0462257 B1 EP0462257 B1 EP 0462257B1 EP 91902176 A EP91902176 A EP 91902176A EP 91902176 A EP91902176 A EP 91902176A EP 0462257 B1 EP0462257 B1 EP 0462257B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ball
- aperture
- chuck
- tool
- shank
- 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 - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
- B25D17/084—Rotating chucks or sockets
- B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0035—Connection means between socket or screwdriver bit and tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0003—Details of shafts of percussive tool bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/003—Details relating to chucks with radially movable locking elements
- B25D2217/0038—Locking members of special shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/003—Details relating to chucks with radially movable locking elements
- B25D2217/0038—Locking members of special shape
- B25D2217/0042—Ball-shaped locking members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S279/00—Chucks or sockets
- Y10S279/904—Quick change socket
- Y10S279/905—Quick change socket with ball detent
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17128—Self-grasping
- Y10T279/17136—Yielding grasping jaws
- Y10T279/17145—Ball or roller
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17666—Radially reciprocating jaws
- Y10T279/17692—Moving-cam actuator
- Y10T279/17743—Reciprocating cam sleeve
- Y10T279/17752—Ball or roller jaws
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17761—Side detent
- Y10T279/17811—Reciprocating sleeve
Definitions
- the invention relates to a chuck according to the preamble of claim 1.
- Such a chuck is shown in US-A-2 518 139.
- This chuck has a bush with a window-shaped opening. A ball sits in this opening, which presses on the tool shank.
- a displaceable actuating sleeve is arranged at the rear of the ball. With its sloping clamping surface, the wall of the sleeve moves onto the ball, which has a larger diameter than the thickness of the sleeve wall. With this actuating sleeve, the angle of the wedge-shaped falling clamping surface does not run in the area of the self-locking. When the tool is inserted, the ball lies in pockets with an arcuate groove base.
- a chuck is known from DE-A-29 34 428.
- a window-shaped opening in the bush which receives the ball, opens in the area of one of the hexagonal surfaces of the cavity.
- the opening is designed as a longitudinal slot running in the direction of insertion of the tool.
- the inner wall is equipped with support shoulders in such a way that two rectilinear support shoulders are connected to one another by arch-shaped support shoulders. Since the longitudinal slot is to be made by means of a end mill, there is an identical cross-sectional design of the support shoulders.
- the longitudinal slot-like opening is provided so that there is insufficient displacement of the actuating sleeve the ball can still move in the direction of insertion.
- the object of the invention is based on the object of designing a generic chuck in a technically simple manner such that, in addition to easy insertion and release of the tool, a large holding force acts on the inserted tool when the tensile load acts on it in the direction of extraction.
- the dependent claim 2 represents an advantageous development of the solution according to the invention.
- the triggering of the tool must be intentional, by moving the actuating sleeve against spring action, the clamping surface moving away from the ball, releasing it in the radial direction. After release, the tool is also easily removable. If the actuating sleeve is not displaced in the release direction, one can open the ball acting force not to move the actuating sleeve, since the clamping surface has such an angle to the longitudinal axis of the chuck, so that this creates a self-locking effect.
- such a dimensional coordination is chosen that the diameter of the ball is less than half the shaft end corner dimension and more than twice as large as the width of the corner recess lying in the axial direction of the shaft. It can therefore z.
- the strength of the support shoulders decreases in relation to the areas of the cavity diametrically opposite in the insertion direction, the rolling behavior of the ball in the withdrawal direction of the tool is less favorable than in the transverse direction, which also contributes to an improved fit of the tool.
- the strength of the support shoulders can be reduced to zero. Nevertheless, there is sufficient support through the transverse shoulders.
- the arrangement of the opening forming the support shoulders at the level of one of the polygonal edges allows the wall thickness of the bushing to be kept low in comparison with the previously known configuration, combined with the smaller one Spatial shape without this resulting from a reduction in the ball diameter.
- the chuck designated as a whole by the number 1, has a clamping pin 2, which is continued in a stepped threaded bolt 3. The latter engages in a central threaded bore of a bush 5.
- a lock nut 6 arranged thereon, which is braced against the facing end edge 7 of the sleeve 5.
- the threaded bore 4 opens into a cavity 8 hexagonal cross section extending in the longitudinal direction of the sleeve 5.
- the length of the cavity 8 is greater than that of the threaded bore 4.
- the sleeve 5 can be screwed onto the threaded bolt 3 so that it also projects into the interior of the cavity 8.
- the front end of the threaded bolt 3 ends with the bottom 9 of the cavity 8.
- the sleeve 5 is provided with an outwardly directed collar 10, which also serves to guide an actuating sleeve 11 overlapping the sleeve 5. It has a cylindrical and a conical section 12, 13. The cylindrical section 12 is guided by the collar 10 of the sleeve 5. At the free end of the cylindrical section 12 there is a guide ring 14 with a bevel 15 on the end face, which is overlaid by an inward flanging 16 of the cylindrical section 12. One end of a compression spring 17 which surrounds the bush 5 is supported on the guide ring 14. The other end thereof is supported on the collar 10. This actuates the actuating sleeve 11 in the insertion direction x of the tool.
- the actuating sleeve 11 is provided with a limit stop by an inner one located in the transition area between the two sections 12, 13 Ring step 18, with which the actuating sleeve 11 abuts the collar 10, cf. Fig. 2.
- the conical section 13 has a wedge-shaped falling clamping surface 19 on the inside of the sleeve. This runs at an angle alpha of 85 ° to the longitudinal direction of the chuck and is therefore in the area of self-locking.
- the smallest diameter of the clamping surface 19 corresponds to the outer diameter of the sleeve 5. From FIG. 2 it can also be seen that when the tool is not inserted, the lower end edge 20 of the sleeve 5 is approximately aligned with the free end edge 21 of the actuating sleeve 11.
- the clamping surface 19 acts together with a ball 22 which represents a pressure piece and has a diameter d of approximately 3 mm.
- the same is accommodated in a radial opening 23 of the bush 5 such that the longitudinal axis of the opening 23 designed as a bore intersects the associated polygonal edge 24 and also the polygonal edge 25 running diametrically thereto.
- the opening 23 is produced by drilling such that support shoulders 26, 27 remain in the region of the inner edge of the opening. As can be clearly seen from FIGS. 4-7, the support shoulders 26, 27 have a different thickness such that the thickness of the support shoulders 27 decreases in relation to the regions of the cavity 8 diametrically opposite in the insertion direction.
- the support shoulders 26 lying in the area of the polygonal edge 24 have a smaller thickness than the support shoulders 27 running transversely thereto.
- the latter are dimensioned so large that they give the ball good support.
- the opening 23 could be drilled in such a way that the strength of the support shoulders 26 could be brought to zero. Still, they would bring the remaining, transversely oriented support shoulders 27 still sufficient support for the ball 22.
- the opening 23 opens into an approximately oval opening 28 in the facing polygonal edge 24 while realizing the support shoulders 26, 27, which are of different sizes and dimensions.
- the exemplary embodiment is a screwdriver bit 29 having a hexagonal cross-sectional shape which is adapted to that of the cavity 8.
- the screwdriver bit 29 has a working end 30 and forms the corresponding blade there.
- Corner cutouts 31 lying on the same cross-sectional plane are provided in the opposite shaft end 32.
- the outlet angle beta of the same can be between 60-120 ° according to existing standards.
- the width w lying in the axial direction, depending on the size of the outlet angle, is approximately 0.9 mm in the exemplary embodiment.
- the diameter d of the ball 22 of 3 mm is smaller than half of the shaft end dimension E of 7.2 mm and more than twice as large as the width w lying in the axial direction of the shaft.
- the corner recesses 31 lie at the same height with the center of the opening 23 or with the ball 22.
- the insertion of the screwdriver bit 29 requires a displacement of the actuating sleeve 11 against the insertion direction x, specifically in the position shown in broken lines in FIG. 3.
- the clamping surface 19 of the actuating sleeve 11 thus gives the ball 22 the corresponding free space so that it can be inserted of the screwdriver bit 29 can move outwards in the radial direction.
- the insertion movement is limited when the screwdriver bit 29 acts on the bottom 9 of the cavity.
- the actuating sleeve 11 can now be released, whereupon the compression spring 17 causes the same to be displaced in the insertion direction x.
- the clamping surface 19 acts on the ball 22 and presses it into contact with the screwdriver bit 29, with the projecting portion of the ball dipping into the facing corner recess 31 of the screwdriver bit 29 while simultaneously realizing a two-point system for the prism-like surfaces 31 'of the corner recess in question 31 at the level of their outlet-side corner points 31 ''.
- Each of these two corner points 31 '' is the interface of three intersecting edges, as can be seen particularly well from FIG. 8. In this way, an extremely stable, tight fit of the screwdriver bit used is produced by means of a lock. Forces acting in the pull-off direction of the screwdriver bit further reinforce the seat of the screwdriver bit in the cavity 8 of the bushing 5.
- the roof-shaped region of the screwdriver bit 29 opposite the ball is inserted into the associated gusset formed by the two corresponding hexagonal surfaces squeezed accordingly centered in the cavity 8. Even if larger tolerances should occur in the manufacture of the screwdriver bits, the sufficiently tight fit of the screwdriver bits in the cavity 8 is always ensured due to the large displacement path of the ball in the opening 23, so that a slot-like opening can be dispensed with connected with it resulting advantages, such as a simplified manufacture of the opening.
- the ball 22 can be supported on the carrying shoulders 26, 27 when the screwdriver bit is inserted. Since the support shoulders 26 are less strong than the support shoulders 27, there is also a different rolling behavior of the ball 22 in such a way that the rolling behavior in the direction of insertion or withdrawal of the tool is less favorable, as a result of which an additional braking effect is generated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Spannfutter gemäß Gattungsbegriff des Anspruchs 1.The invention relates to a chuck according to the preamble of
Ein derartiges Spannfutter zeigt die US-A-2 518 139. Dieses Spannfutter besitzt eine Büchse mit einer fensterförmigen Durchbrechung. In dieser Durchbrechung sitzt eine Kugel, welche auf den Werkzeugschaft drückt. Rückwärtig der Kugel ist eine verschiebbare Betätigungshülse angeordnet. Mit ihrer abfallenden Spannfläche rückt die Wandung der Hülse auf die Kugel, welche einen größeren Durchmesser aufweist als die Dicke der Büchsenwandung. Bei dieser Betätigungshülse verläuft der Winkel der keilförmig abfallenden Spannfläche nicht im Bereich der Selbsthemmung. Die Kugel liegt beim eingesteckten Werkzeug in Taschen mit einem bogenförmigen Nutgrund.Such a chuck is shown in US-A-2 518 139. This chuck has a bush with a window-shaped opening. A ball sits in this opening, which presses on the tool shank. A displaceable actuating sleeve is arranged at the rear of the ball. With its sloping clamping surface, the wall of the sleeve moves onto the ball, which has a larger diameter than the thickness of the sleeve wall. With this actuating sleeve, the angle of the wedge-shaped falling clamping surface does not run in the area of the self-locking. When the tool is inserted, the ball lies in pockets with an arcuate groove base.
Weiterhin ist ein Spannfutter aus der DE-A-29 34 428 bekannt. Dabei mündet eine die Kugel aufnehmende, fensterförmige Durchbrechung der Büchse im Bereich einer der Sechskantflächen der Höhlung. Die Durchbrechung ist als in Einsteckrichtung des Werkzeugs verlaufender Längsschlitz gestaltet. Im Bereich ihrer innenliegenden Randkante ist die Innenwandung mit Tragschultern ausgestattet derart, daß zwei geradlinig verlaufenerde Tragschultern durch bogenförmig gestaltete Tragschultern untereinander verbunden sind. Da der Längsschlitz mittels eines Fingerfräsers herzustellen ist, liegt eine identische Querschnittsgestaltung der Tragschultern vor.Furthermore, a chuck is known from DE-A-29 34 428. A window-shaped opening in the bush, which receives the ball, opens in the area of one of the hexagonal surfaces of the cavity. The opening is designed as a longitudinal slot running in the direction of insertion of the tool. In the area of its inner peripheral edge, the inner wall is equipped with support shoulders in such a way that two rectilinear support shoulders are connected to one another by arch-shaped support shoulders. Since the longitudinal slot is to be made by means of a end mill, there is an identical cross-sectional design of the support shoulders.
Die längsschlitzartige Durchbrechung wird vorgesehen, damit bei unzureichender Verlagerung der Betätigungshülse die Kugel noch eine Bewegung in Einsteckrichtung auszuführen vermag.The longitudinal slot-like opening is provided so that there is insufficient displacement of the actuating sleeve the ball can still move in the direction of insertion.
Dem Gegenstand der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Spannfutter in herstellungstechnisch einfacher Weise so auszugestalten, daß neben einem leichten Einsetzen und Auslösen des Werkzeuges eine große Haltekraft auf das eingesteckte Werkzeug bei an diesem angreifender Zugbelastung in Richtung eine's Herausziehens einwirkt.The object of the invention is based on the object of designing a generic chuck in a technically simple manner such that, in addition to easy insertion and release of the tool, a large holding force acts on the inserted tool when the tensile load acts on it in the direction of extraction.
Gelöst wird diese Aufgabe bei einem Spannfutter der in Rede stehenden Art durch die im Kennzeichen des Anspruchs 1 angegebene Erfindung.This object is achieved in a chuck of the type in question by the invention specified in the characterizing part of
Der Unteranspruch 2 stellt eine vorteilhafte Weiterbildung der erfindungsgemäßen Lösung dar.The
Zufolge derartiger Ausgestaltung ist der Gebrauchswert eines gattungsgemäßen Spannfutters erhöht. Es läßt sich selbst bei kleiner Raumform ein straffer Sitz des eingesteckten Werkzeugs in der Höhlung der Büchse erzielen. Zum Einsetzen des Werkzeugs ist durch dieses nicht die Kugel zurückzudrängen. Es ist lediglich die Betätigungshülse entgegen Federbelastung zu verlagern, so daß das Werkzeug behinderungsfrei in die Höhlung einsteckbar ist. Bei eingesetztem Werkzeug fluchtet eine der Eckaussparungen mit der Kugel, welche durch die freigegebene Betätigungshülse in Zweipunkt-Anlage tritt zu den prismenartig zueinanderstehenden Flächen der Eckaussparung am Schaftende des Werkzeugs. In Verbindung mit der abfallend verlaufenden Spannfläche der Betätigungshülse und dieser Zweipunkt-Anlage wird eine echte Verriegelung erzeugt, die besonders große Zugbelastungen aufzunehmen vermag. Daher können durchaus Zugkräfte in der Höhe von 150-200 Newton auf das Werkzeug ausgeübt werden, ohne daß dieses die Höhlung verläßt. Zur Erzielung der vorgenannten hohen Haltekraft trägt die Tatsache bei, daß für das Werkzeug sowie für die Kugel Materialien hoher Festigkeit gewählt sind. Dies trifft im wesentlichen auch auf die Betätigungshülse zu, so daß die Zweipunkt-Anlage der Kugel in Verbindung mit einem geringfügigen Eintritt in die Eckaussparung den festen Sitz schafft. Sieht man von einer Verformung ab, muß das Auslösen des Werkzeugs willensbetont geschehen, und zwar durch Verlagerung der Betätigungshülse entgegen Federwirkung, wobei sich die Spannfläche von der Kugel entfernt unter Freigabe derselben in radialer Richtung. Nach Freigabe ist auch das Werkzeug wiederum leicht entnehmbar, Bei nicht in Freigaberichtung verlagerter Betätigungshülse vermag eine auf die Kugel einwirkende Kraft die Betätigungshülse nicht zu verschieben, da die Spannfläche einen solchen Winkel zur Längsachse des Spannfutters aufweist, so daß dadurch ein Selbsthemmeffekt entsteht. Im Detail ist eine solche maßliche Abstimmung gewählt, daß der Durchmesser der Kugel kleiner als die Hälfte des Schaftenden-Eckmaßes und mehr als doppelt so groß ist wie die in Achsrichtung des Schaftes liegende Weite der Eckaussparung. Es läßt sich daher z. B. bei Kugeldurchmessern, die bei 2-3 mm liegen, die vorgenannte große Haltekraft erzeugen. Weiterhin ist es von Vorteil, wenn die Tragschultern der eine der Mehrkantkanten durchdringenden Höhlung, in Umfangsrichtung gesehen, eine unterschiedliche Stärke besitzen. Es können auch mit größeren Toleranzen hergestellte bitförmige Werkzeuge ausreichend fest gehaltert werden. Es trifft insbesondere auf solche Werkzeuge zu, die durch Kaltverformung hergestellt werden. Werden Werkzeuge mit großem Untermaß verwendet, kann die Kugel unmittelbar bis zu den Tragschultern vordringen und sich dort abstützen. Bedingt durch die unterschiedlich groß gestalteten Tragschultern liegt auch ein unterschiedliches Rollverhalten der Kugel innerhalb der Durchbrechung vor. Da die Stärke der Tragschultern zu den sich in Einsteckrichtung diametral gegenüberliegenden Bereichen der Höhlung abnimmt, ist das Rollverhalten der Kugel in Abzugsrichtung des Werkzeuges ungünstiger als in Querrichtung dazu, was ebenfalls zu einem verbesserten Sitz des Werkzeuges beiträgt. Praktisch kann die Stärke der Tragschultern bis auf Null gebracht werden. Dennoch ist eine genügende Abstützung durch die quer dazu verlaufen- den Tragschultern vorhanden. Die Anordnung der die Tragschultern ausbildenden Durchbrechung auf Höhe einer der Mehrkantkanten gestattet es, daß die Wandungsstärke der Büchse im Vergleich zu der vorbekannten Ausgestaltung gering gehalten werden kann verbunden mit der verkleinerten Raumform, ohne daß dies aus einer Verringerung des Kugeldurchmessers resultiert.As a result of such a configuration, the utility value of a generic chuck is increased. Even with a small spatial shape, a tight fit of the inserted tool can be achieved in the cavity of the sleeve. The ball must not be pushed back through to insert the tool. It is only necessary to displace the actuating sleeve against spring loading so that the tool can be inserted into the cavity without hindrance. When the tool is inserted, one of the corner recesses is aligned with the ball, which enters through the released actuating sleeve in two-point contact to the prismatic surfaces of the corner recess at the shaft end of the tool. In conjunction with the sloping clamping surface of the actuating sleeve and this two-point system, a real locking system is created that can absorb particularly high tensile loads. Therefore, tensile forces in the amount of 150-200 Newton can be exerted on the tool without it leaving the cavity. To achieve the above-mentioned high holding force, the fact that high strength materials are selected for the tool and for the ball contributes. This essentially also applies to the actuating sleeve, so that the two-point system of the ball in conjunction with a slight entry into the corner recess creates a firm fit. Apart from a deformation, the triggering of the tool must be intentional, by moving the actuating sleeve against spring action, the clamping surface moving away from the ball, releasing it in the radial direction. After release, the tool is also easily removable. If the actuating sleeve is not displaced in the release direction, one can open the ball acting force not to move the actuating sleeve, since the clamping surface has such an angle to the longitudinal axis of the chuck, so that this creates a self-locking effect. In detail, such a dimensional coordination is chosen that the diameter of the ball is less than half the shaft end corner dimension and more than twice as large as the width of the corner recess lying in the axial direction of the shaft. It can therefore z. B. with ball diameters that are 2-3 mm, generate the aforementioned large holding force. Furthermore, it is advantageous if the support shoulders of the hollow penetrating one of the polygonal edges, as seen in the circumferential direction, have a different thickness. Bit-shaped tools manufactured with larger tolerances can also be held sufficiently firmly. It applies in particular to tools that are produced by cold working. If tools with a large undersize are used, the ball can penetrate right up to the support shoulders and be supported there. Due to the differently sized support shoulders, there is also a different rolling behavior of the ball within the opening. Since the strength of the support shoulders decreases in relation to the areas of the cavity diametrically opposite in the insertion direction, the rolling behavior of the ball in the withdrawal direction of the tool is less favorable than in the transverse direction, which also contributes to an improved fit of the tool. In practice, the strength of the support shoulders can be reduced to zero. Nevertheless, there is sufficient support through the transverse shoulders. The arrangement of the opening forming the support shoulders at the level of one of the polygonal edges allows the wall thickness of the bushing to be kept low in comparison with the previously known configuration, combined with the smaller one Spatial shape without this resulting from a reduction in the ball diameter.
Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Figuren 1-9 erläutert. Es zeigt
- Fig. 1
- in etwa fünffach vergrößerter Darstellung ein erfindungsgemäß gestaltetes Spannfutter mit strichpunktiertem, als Schraubendreherbit gestaltetem Werkzeug,
- Fig. 2
- einen Längsschnitt durch das Spannfutter ohne Werkzeug,
- Fig. 3
- ebenfalls einen Längsschnitt durch das Spannfutter, und zwar bei eingestecktem Werkzeug,
- Fig. 4
- in etwa fünfzehnfacher Vergrößerung im Längsschnitt einen Ausschnitt des Spannfutters im Bereich der Kugel, und zwar ohne eingesetztes Werkzeug,
- Fig. 5
- den zugehörigen Schnitt nach der Linie V-V in Fig. 4,
- Fig. 6
- die Ansicht in Pfeilrichtung VI in Fig. 5,
- Fig. 7
- die Ansicht in Pfeilrichtung VII in Fig. 4,
- Fig. 8
- einen der Fig. 4 entsprechenden ausschnittsweisen Längsschnitt bei eingestecktem Werkzeug und
- Fig. 9
- den Schnitt nach der Linie IX-IX in Fig. 8.
- Fig. 1
- approximately five times enlarged representation of a chuck designed according to the invention with dash-dotted tool designed as a screwdriver bit,
- Fig. 2
- a longitudinal section through the chuck without tools,
- Fig. 3
- also a longitudinal section through the chuck, with the tool inserted,
- Fig. 4
- in a fifteen-fold enlargement in longitudinal section a section of the chuck in the area of the ball, without any tools used,
- Fig. 5
- the associated section along the line VV in Fig. 4,
- Fig. 6
- the view in the direction of arrow VI in Fig. 5,
- Fig. 7
- the view in the direction of arrow VII in Fig. 4,
- Fig. 8
- one of FIG. 4 corresponding longitudinal section with the tool inserted and
- Fig. 9
- the section along the line IX-IX in Fig. 8.
Das als Ganzes mit der Ziffer 1 bezeichnete Spannfutter besitzt einen Einspannzapfen 2, der sich in einen stufenförmig abgesetzten Gewindebolzen 3 fortsetzt. Letzterer greift in eine zentrale Gewindebohrung einer Büchse 5 ein. Zur Fixierung der eingeschraubten Lage des Gewindebolzens 3 dient eine auf diesem angeordnete Kontermutter 6, welche gegen den zugekehrten Stirnrand 7 der Büchse 5 verspannt ist.The chuck, designated as a whole by the
Die Gewindebohrung 4 mündet in eine in Längsrichtung der Büchse 5 verlaufende Höhlung 8 sechseckigen Querschnitts. Die Länge der Höhlung 8 ist größer als diejenige der Gewindebohrung 4. Die Büchse 5 kann so auf den Gewindebolzen 3 aufgedreht werden, daß dieser auch in den Innenraum der Höhlung 8 hineinragt. Beim Ausführungsbeispiel schließt das Stirnende des Gewindebolzens 3 mit dem Boden 9 der Höhlung 8 ab.The threaded
Im mittleren Bereich ist die Büchse 5 mit einem auswärts gerichteten Kragen 10 versehen, der mit zur Führung einer die Büchse 5 überfangenden Betätigungshülse 11 dient. Dieselbe besitzt einen zylindrischen und einen konischen Abschnitt 12, 13. Der zylindrische Abschnitt 12 wird vom Kragen 10 der Büchse 5 geführt. Am freien Ende des zylindrischen Abschnitts 12 befindet sich ein Führungsring 14 mit einer stirnseitigen Abschrägung 15, welche von einer einwärts gerichteten Umbördelung 16 des zylindrischen Abschnitts 12 überfangen ist. An dem Führungsring 14 stützt sich das eine Ende einer die Büchse 5 umgreifenden Druckfeder 17 ab. Das andere Ende derselben findet Abstützung an dem Kragen 10. Hierdurch wird die Betätigungshülse 11 in Einsteckrichtung x des Werkzeugs beaufschlagt. Eine Anschlagbegrenzung erhält die Betätigungshülse 11 durch eine im Übergangsbereich zwischen den beiden Abschnitten 12, 13 befindliche innere Ringstufe 18, mit welcher die Betätigungshülse 11 gegen den Kragen 10 stößt, vgl. Fig. 2.In the central area, the
Der konische Abschnitt 13 weist büchseninnenseitig eine keilförmig abfallende Spannfläche 19 auf. Diese verläuft unter einem Winkel Alpha von 85° zur Spannfutter-Längsrichtung und liegt damit im Bereich der Selbsthemmung. Der kleinste Durchmesser der Spannfläche 19 entspricht dem Außendurchmesser der Büchse 5. Aus Fig. 2 geht ferner hervor, daß bei nicht eingesetztem Werkzeug der untere Stirnrand 20 der Büchse 5 etwa mit dem freien Stirnrand 21 der Betätigungshülse 11 fluchtet.The
Die Spannfläche 19 wirkt zusammen mit einer ein Druckstück darstellenden Kugel 22 mit einem Durchmesser d von ca. 3mm. Dieselbe ist in einer radialen Durchbrechung 23 der Büchse 5 untergebracht derart, daß die Längsachse der als Bohrung gestalteten Durchbrechung 23 die zugehörige Mehrkantkante 24 und auch die diametral dazu verlaufende Mehrkantkante 25 schneidet. Die Durchbrechung 23 wird durch Bohren erzeugt derart, daß im Bereich der innenliegenden Randkante der Durchbrechung Tragschultern 26, 27 verbleiben. Wie eindeutig aus den Figuren 4-7 hervorgeht, besitzen die Tragschultern 26, 27 eine unterschiedliche Stärke derart, daß die Stärke der Tragschultern 27 zu den sich in Einsteckrichtung diametral gegenüberliegenden Bereichen der Höhlung 8 abnimmt. Demzufolge weisen die im Bereich der Mehrkantkante 24 liegenden Tragschultern 26 eine geringere Stärke auf als die quer dazu verlaufenden Tragschultern 27. Letztere sind so groß dimensioniert, daß sie der Kugel eine gute Abstützung geben. Das Bohren der Durchbrechung 23 könnte so erfolgen, daß die Stärke der Tragschultern 26 bis auf den Wert Null gebracht werden könnte. Dennoch würden die verbleibenden, quer dazu gerichteten Tragschultern 27 noch die genügende Abstützung für die Kugel 22 bringen.The clamping
Aus den Figuren 6 und 7 geht hervor, daß die Durchbrechung 23 in einer etwa ovalen Öffnung 28 in die zugekehrte Mehrkantkante 24 mündet unter Verwirklichung der unterschiedlich stark und flächenmäßig groß bemessenen Tragschultern 26, 27.It can be seen from FIGS. 6 and 7 that the
Bezüglich des Werkzeugs handelt es sich beim Ausführungsbeispiel um einen Schraubendreherbit 29 sechseckiger Querschnittsform, die derjenigen der Höhlung 8 angepaßt ist. Es liegt eine Schlüsselweite von 6,3mm vor, und das Eckmaß E beträgt ca. 7,2mm. Der Schraubendreherbit 29 besitzt ein Arbeitsende 30 und formt dort die entsprechende Klinge. In dem gegenüberliegenden Schaftende 32 sind auf gleicher Querschnittsebene liegende Eckaussparungen 31 vorgesehen. Der Auslaufwinkel Beta derselben kann gemäß bestehender Normen zwischen 60-120° liegen. Die in Achsrichtung liegende Weite w, abhängig von der Größe des Auslaufwinkels, beträgt beim Ausführungsbeispiel ca. 0,9 mm. Demgemäß ist der Durchmesser d der Kugel 22 von 3mm kleiner als die Hälfte des Schaftenden-Eckmaßes E von 7,2mm und mehr als doppelt so groß wie die in Achsrichtung des Schaftes liegende Weite w. In eingesetztem Zustand des Schraubendreherbits 29 liegen die Eckaussparungen 31 auf gleicher Höhe zur Achsmitte der Durchbrechung 23 bzw. zur Kugel 22.With regard to the tool, the exemplary embodiment is a
Das Einsetzen des Schraubendreherbits 29 verlangt eine Verschiebung der Betätigungshülse 11 entgegen der Einsteckrichtung x, und zwar in die Fig. 3 veranschaulichte, strichpunktiert dargestellte Position. Die Spannfläche 19 der Betätigungshülse 11 gibt damit der Kugel 22 den entsprechenden Freiraum, damit sie beim Einsetzen des Schraubendreherbits 29 in radialer Richtung nach auswärts ausweichen kann. Begrenzt ist die Einsteckbewegung, wenn der Schraubendreherbit 29 den Boden 9 der Höhlung beaufschlagt. Es kann nun die Betätigungshülse 11 losgelassen werden, woraufhin die Druckfeder 17 eine Verlagerung derselben in Einsteckrichtung x veranlaßt. Dabei beaufschlagt die Spannfläche 19 die Kugel 22 und drückt diese in Anlage zum Schraubendreherbit 29, wobei die Kugel mit ihrem vorstehenden Abschnitt in die zugekehrte Eckaussparung 31 des Schraubendreherbits 29 eintaucht unter gleichzeitiger Verwirklichung einer Zweipunkt-Anlage zu den prismenartig zueinanderstehenden Flächen 31′ der betreffenden Eckaussparung 31 auf Höhe deren auslaufseitigen Eckpunkte 31′′. Jeder dieser beiden Eckpunkte 31′′ ist die Schnittstelle dreier sich treffender Kanten, wie dies aus Fig. 8 besonders gut hervorgeht. Es wird hierdurch im Wege einer Verriegelung ein äußerst stabiler, straffer Sitz des eingesetzten Schraubendreherbits erzeugt. In Abzugsrichtung des Schraubendreherbits wirkende Kräfte verstärken noch den Sitz des Schraubendreherbits in der Höhlung 8 der Büchse 5. Über die Spannfläche 19 und Kugel 22 wird im übrigen der der Kugel gegenüberliegende dachförmige Bereich des Schraubendreherbits 29 in den zugehörigen, von den beiden entsprechenden Sechskantflächen gebildeten Zwickel hineingezwängt demgemäß sich in der Höhlung 8 zentriert. Auch wenn größere Toleranzen bei der Herstellung der Schraubendreherbits auftreten sollten, ist stets der genügend straffe Sitz der Schraubendreherbits in der Höhlung 8 gewährleistet zufolge des großen Verlagerungsweges der Kugel in der Durchbrechung 23, so daß auf eine längsschlitzartige Durchbrechung verzichtet werden kann verbunden mit den sich hieraus ergebenden Vorteilen, wie z.B. eine vereinfachte Herstellung der Durchbrechung.The insertion of the
Liegen die Toleranzen des Schraubendreherbits an der unteren Grenze, so kann die Kugel 22 sich bei eingesetztem Schraubendreherbit an den Tragschultern 26, 27 abstützen. Da die Tragschultern 26 geringer stark als die Tragschultern 27 sind, liegt auch ein unterschiedliches Rollverhalten der Kugel 22 vor derart, daß das in Einsteckrichtung bzw. Abzugsrichtung des Werkzeugs vorliegende Rollverhalten ungünstiger ist, wodurch ein zusätzlicher Bremseffekt erzeugt wird.If the tolerances of the screwdriver bit are at the lower limit, the
Das Herauslösen des Schraubendreherbits 29 aus der Höhlung 8 verlangt eine willensbetonte Verlagerung der Betätigungshülse 11 in Werkzeug-Einsteckrichtung x, so daß bei anschließendem Zug an dem Werkzeug entgegen Einsteckrichtung x die Kugel 22 in radialer Auswärtsrichtung ausweichen kann unter Freigabe des Schraubendreherbits. Sowohl beim Einstecken als auch Auslösen desselben braucht dieser keine Federkräfte zu überwinden, so daß dies einen nicht unerheblichen Gebrauchsvorteil darstellt.The removal of the screwdriver bit 29 from the
Claims (2)
- Chuck for polygonal shank ends of tools, with a bush (5) which transmits the driving force and in its cavity (8) corresponds to the polygon cross-section of the shank end (32) and which has a window-like aperture in which is arranged a ball (22) as a thrust member acting on the shank, to the rear of which is arranged a slidable operating sleeve (11), the diameter of the ball (22) being greater than the thickness of the bush wall and smaller than half the width across corners (E) at the shank end, wherein the operating sleeve (11) at its sloping clamping surface (19) presses on the ball which is located in front of supporting shoulders in the region of the interior edge of the aperture, and wherein the ball (22) is arranged in an aperture (23) passing through the polygon edge (24), and when the shank end is inserted the ball is in two-point contact with the surfaces (31′) of a corner recess (31) which are in prismatic relationship to each other, characterised in that- the operating sleeve is displaceable against spring action along the longitudinal axis of the chuck,- the two-point contact is at the level of the corner points (31′) on the taper side of the surfaces which are in prismatic relationship to each other at an angle of 60° to 120°, and- the diameter (d) of the ball (22) is more than twice as great as the width (w) of a corner recess (31) in the axial direction of the shank.
- Chuck according to claim 1, characterised in that the supporting shoulders (26, 27) of the aperture (23) passing through one of the polygon edges as seen in the circumferential direction have different thicknesses, wherein the thickness of the supporting shoulder (26) decreases if occasion arises to almost zero towards the regions of the aperture (23) which are diametrically opposed in the direction of insertion.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9000245U DE9000245U1 (en) | 1990-01-11 | 1990-01-11 | Chuck for multi-edged shank ends of tools |
DE9000245U | 1990-01-11 | ||
PCT/EP1991/000033 WO1991010541A1 (en) | 1990-01-11 | 1991-01-11 | Die chuck for multiple-cornered ends of tool spindles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0462257A1 EP0462257A1 (en) | 1991-12-27 |
EP0462257B1 true EP0462257B1 (en) | 1994-06-08 |
Family
ID=6849931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91902176A Expired - Lifetime EP0462257B1 (en) | 1990-01-11 | 1991-01-11 | Die chuck for multiple-cornered ends of tool spindles |
Country Status (7)
Country | Link |
---|---|
US (1) | US5188378A (en) |
EP (1) | EP0462257B1 (en) |
JP (1) | JPH04504825A (en) |
DE (3) | DE9000245U1 (en) |
DK (1) | DK0462257T3 (en) |
ES (1) | ES2054489T3 (en) |
WO (1) | WO1991010541A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8381830B2 (en) | 2009-05-05 | 2013-02-26 | Black & Decker Inc. | Power tool with integrated bit retention device |
US8800999B2 (en) | 2009-02-27 | 2014-08-12 | Black & Decker Inc. | Bit retention device |
Families Citing this family (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4313580A1 (en) * | 1993-04-26 | 1994-10-27 | Hilti Ag | Tool clamping |
US5678961A (en) * | 1995-05-11 | 1997-10-21 | Fleege; Dennis W. | Quick change adapter |
US5752424A (en) * | 1995-06-06 | 1998-05-19 | Wilson Tool International, Inc. | Releasable tool piece punch assembly |
US5664634A (en) * | 1995-10-23 | 1997-09-09 | Waxing Corporation Of America, Inc. | Power tool |
USD380069S (en) * | 1995-10-23 | 1997-06-17 | Waxing Corporation Of America, Inc. | Detailing polisher |
WO1998055268A1 (en) * | 1997-06-02 | 1998-12-10 | Wera Werk Hermann Werner Gmbh & Co. | Clamping chuck for bits or the like |
DE19804081B4 (en) * | 1997-06-02 | 2014-01-02 | Wera-Werk Hermann Werner Gmbh & Co. Kg | Chuck for bits or the like |
US6132577A (en) * | 1998-04-23 | 2000-10-17 | Sandia Corporation | Method and apparatus for monitoring plasma processing operations |
USD429262S (en) * | 1998-06-26 | 2000-08-08 | Black & Decker Inc. | Tool bit holder |
USD424075S (en) * | 1998-06-26 | 2000-05-02 | Black & Decker Inc. | Collar for tool bit holder |
US6126370A (en) | 1998-07-22 | 2000-10-03 | Black & Decker Inc. | Removable tool holder |
US5988957A (en) * | 1998-12-21 | 1999-11-23 | Black & Decker Inc. | Quick clamp |
DE29916588U1 (en) * | 1999-09-21 | 2001-02-08 | Werner Hermann Wera Werke | Hand tool with pliers function |
US6394715B1 (en) * | 2000-03-09 | 2002-05-28 | Black & Decker Inc. | Rotary tool holder |
US6347914B1 (en) | 2000-03-09 | 2002-02-19 | Black & Decker Inc. | Rotary tool holder |
US6688610B2 (en) | 2000-05-12 | 2004-02-10 | Power Tool Holders Incorporated | Chuck with quick change |
US6533291B2 (en) | 2001-02-14 | 2003-03-18 | Power Tool Holders Incorporated | Chuck having quick change mechanism |
DE10141668A1 (en) | 2001-08-25 | 2003-03-06 | Werner Hermann Wera Werke | Chuck for tools, especially screwdriver bits |
DE10151894A1 (en) * | 2001-10-24 | 2003-05-08 | Schmidt Ulrich Ush Schraubwerk | Chuck for simplified insertion of a tool shank |
US6834864B2 (en) * | 2001-10-24 | 2004-12-28 | Power Tool Holders Incorporated | Chuck having quick change mechanism |
US6616149B1 (en) * | 2002-03-19 | 2003-09-09 | S-B Power Tool Corporation | Quick-release chuck having compact collar |
US6637755B2 (en) * | 2002-03-22 | 2003-10-28 | Tsai-Ching Chen | Chuck device for miniature tool bits |
US20040026878A1 (en) * | 2002-03-22 | 2004-02-12 | Tsai-Ching Chen | Chuck device for miniature tool bits |
DE10219418B4 (en) * | 2002-05-02 | 2014-11-27 | Wera-Werk Hermann Werner Gmbh & Co. Kg | Free-running sleeve |
US6929266B2 (en) * | 2002-06-18 | 2005-08-16 | Black & Decker Inc. | Bit holder |
DE10233866B4 (en) | 2002-07-25 | 2018-01-25 | Wera Werk Hermann Werner Gmbh & Co. Kg | Screwing tool with exchangeable shaft |
DE10337203A1 (en) * | 2003-08-13 | 2005-03-31 | Kennametal Inc. | drilling |
DE102004003778B4 (en) * | 2004-01-23 | 2008-01-31 | Robert Schröder GmbH & Co. KG | chuck |
US20050254912A1 (en) * | 2004-05-17 | 2005-11-17 | Skrzynski Edward J | Double ended cutting tool |
DE202006003096U1 (en) * | 2006-02-23 | 2006-07-27 | Robert Schröder GmbH & Co. KG | chuck |
US7387054B2 (en) * | 2006-03-01 | 2008-06-17 | Jacques Rajotte | Screw driving device |
US7823890B2 (en) * | 2006-11-01 | 2010-11-02 | Tsai-Ching Chen | Chuck |
US20080111323A1 (en) * | 2006-11-09 | 2008-05-15 | Westport Medical, Inc. | Bit holders |
TW200950938A (en) * | 2008-06-11 | 2009-12-16 | Hou-Fei Hu | Chuck for bit |
US8622401B2 (en) * | 2009-02-27 | 2014-01-07 | Black & Decker Inc. | Bit retention device |
WO2010102062A1 (en) * | 2009-03-03 | 2010-09-10 | Westport Medical, Inc. | Bit holders |
DE202009014717U1 (en) | 2009-10-30 | 2010-01-14 | Jakob Schmid Gmbh + Co. Kg | Quick-change clamping tool for drilling tools with clamping surface |
DE102010003842A1 (en) | 2010-04-10 | 2011-10-13 | Swg Schraubenwerk Gaisbach Gmbh | Arrangement for mounting a drill |
WO2013113849A1 (en) | 2012-01-31 | 2013-08-08 | Quantifoil Instruments Gmbh | Mechanism for generating an orbital motion or a rotation motion by inversing a drive direction of a drive unit |
WO2013113847A1 (en) | 2012-01-31 | 2013-08-08 | Quantifoil Instruments Gmbh | Cog-based mechanism for generating an orbital shaking motion |
US10265756B2 (en) | 2012-02-06 | 2019-04-23 | Mate Precision Tooling, Inc. | Punch assembly with steel punch point insert removably secured therein |
US9505108B2 (en) | 2012-02-15 | 2016-11-29 | Black & Decker Inc. | Bit holder with floating magnet sleeve |
US9943946B2 (en) | 2012-02-15 | 2018-04-17 | Black & Decker Inc. | Tool bits with floating magnet sleeves |
US9156147B2 (en) | 2012-02-15 | 2015-10-13 | Black & Decker Inc. | Quick change bit holder with ring magnet |
US10150205B2 (en) | 2012-02-15 | 2018-12-11 | Black & Decker Inc. | Fastening tools with floating magnet sleeves |
US9227309B2 (en) | 2012-02-15 | 2016-01-05 | Black & Decker Inc. | Quick change bit holder with ring magnet |
JP6250175B2 (en) | 2014-04-30 | 2017-12-20 | ジャイラス・エイシーエムアイ・インコーポレイテッド | Rotating tool with improved coupling assembly |
US9707626B2 (en) * | 2014-10-22 | 2017-07-18 | Rote Mate Industry Co., Ltd. | Hole saw assembly |
USD806493S1 (en) | 2015-07-22 | 2018-01-02 | Tti (Macao Commercial Offshore) Limited | Tool adapter |
USD780548S1 (en) | 2015-07-22 | 2017-03-07 | Ac (Macao Commercial Offshore) Limited | Power tool |
USD789761S1 (en) | 2015-11-02 | 2017-06-20 | Black & Decker Inc. | Torsion bit |
US20170298728A1 (en) * | 2016-04-18 | 2017-10-19 | Jian-Shiou Liaw | Chisel Holder |
US10821579B2 (en) * | 2016-11-07 | 2020-11-03 | Jacques Rajotte | Screw driving device for use with an impact driver |
CN107363774A (en) * | 2017-08-30 | 2017-11-21 | 厦门南旗佰特精密工具制造有限公司 | A kind of Quick universal bindiny mechanism and Quick universal type screwdriver |
CN110732888B (en) | 2018-07-20 | 2022-07-26 | 米沃奇电动工具公司 | Tool bit holder |
US10974374B2 (en) | 2018-12-19 | 2021-04-13 | Jacques Rajotte | Impact driver screw driving device with depth adjustment |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1642490A (en) * | 1926-10-09 | 1927-09-13 | Black & Decker Mfg Co | Portable power-driven screw driver and wrench-clutch cup |
US2518139A (en) * | 1946-03-06 | 1950-08-08 | Standard Pressed Steel Co | Magazine tool |
US2518134A (en) * | 1946-12-18 | 1950-08-08 | Detachable cover and service bar | |
DE1254549B (en) * | 1955-02-07 | 1967-11-16 | Licentia Gmbh | Power tool with an axially displaceable sleeve for loosening insert tools and a slip clutch with spring |
US3251605A (en) * | 1963-09-26 | 1966-05-17 | Supreme Products Corp | Quick release chuck |
US3428327A (en) * | 1966-09-19 | 1969-02-18 | Black & Decker Mfg Co | Quick release rotary tool chuck |
US4209182A (en) * | 1978-10-05 | 1980-06-24 | Cooper Industries, Inc. | Bit retainer for screwdriver |
DE2843684C3 (en) * | 1978-10-06 | 1981-06-11 | Feinwerkbau Helfer & Co KG, 3261 Möllenbeck | Screw head |
DE2934428A1 (en) * | 1979-08-25 | 1981-03-26 | Wera-Werk Hermann Werner Gmbh & Co, 42349 Wuppertal | Screw-driver with interchangeable bits - has hexagonal shanks locked by ball in spring loaded taper sleeve |
DE3324756A1 (en) * | 1983-07-08 | 1985-01-17 | Hilti Ag, Schaan | Powered screwdriver |
DE3330486A1 (en) * | 1983-08-24 | 1985-03-07 | Wera Werk Hermann Werner Gmbh & Co, 5600 Wuppertal | CHUCK FOR TOOL PIECES, IN PARTICULAR SCREWDRIVER BITS |
US4629073A (en) * | 1985-05-08 | 1986-12-16 | Belden Walter R | Belt buckle rack |
US4900202A (en) * | 1988-09-08 | 1990-02-13 | Wienhold James L | Chuck assembly for tool bits |
DE8901367U1 (en) * | 1989-02-07 | 1989-06-15 | Siegler, Gustav, 7317 Wendlingen | Quick-change chuck for electric hand drills |
-
1990
- 1990-01-11 DE DE9000245U patent/DE9000245U1/en not_active Expired - Lifetime
- 1990-01-11 US US07/752,660 patent/US5188378A/en not_active Expired - Lifetime
-
1991
- 1991-01-11 DE DE9116606U patent/DE9116606U1/en not_active Expired - Lifetime
- 1991-01-11 DK DK91902176.6T patent/DK0462257T3/en active
- 1991-01-11 DE DE59101830T patent/DE59101830D1/en not_active Expired - Fee Related
- 1991-01-11 EP EP91902176A patent/EP0462257B1/en not_active Expired - Lifetime
- 1991-01-11 JP JP3502429A patent/JPH04504825A/en active Pending
- 1991-01-11 WO PCT/EP1991/000033 patent/WO1991010541A1/en active IP Right Grant
- 1991-01-11 ES ES91902176T patent/ES2054489T3/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8800999B2 (en) | 2009-02-27 | 2014-08-12 | Black & Decker Inc. | Bit retention device |
US8381830B2 (en) | 2009-05-05 | 2013-02-26 | Black & Decker Inc. | Power tool with integrated bit retention device |
Also Published As
Publication number | Publication date |
---|---|
EP0462257A1 (en) | 1991-12-27 |
DE59101830D1 (en) | 1994-07-14 |
DK0462257T3 (en) | 1994-11-07 |
JPH04504825A (en) | 1992-08-27 |
DE9000245U1 (en) | 1991-05-16 |
US5188378A (en) | 1993-02-23 |
WO1991010541A1 (en) | 1991-07-25 |
ES2054489T3 (en) | 1994-08-01 |
DE9116606U1 (en) | 1993-04-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0462257B1 (en) | Die chuck for multiple-cornered ends of tool spindles | |
DE2934428C2 (en) | ||
DE10261748B4 (en) | punching tool | |
DE1400846C3 (en) | Socket | |
DE69301896T2 (en) | Tool chuck | |
DE19521993A1 (en) | Tool holder and tool for a drilling and / or impact machine | |
EP0002654A1 (en) | Fastening device with a dowel positively locking in a undercut bore | |
DE10313170B3 (en) | Insertion bolt with axial lock to put through hole in machine component has locking elements forming virtual free running turning axis in their connection region | |
EP1420919B1 (en) | Chuck for tools, especially for screwdriver bits | |
EP0752068A1 (en) | Drill, especially drilling screw | |
DE3538675C2 (en) | ||
EP0969944B1 (en) | Adjustable stop | |
DE1085721B (en) | Clamp connection | |
CH675221A5 (en) | ||
DE3102211A1 (en) | Device for the releasable connection of two hollow-profile bodies | |
EP0275441A1 (en) | Clamping device | |
EP0615478A1 (en) | Tool coupling with a radially elastically expandable coupling sleeve and a shaft with a clamping body. | |
DE2043634C3 (en) | Central belt buckle, in particular for parachutist body harnesses | |
DE19923006C2 (en) | Chuck for interchangeable tool inserts | |
DE29505752U1 (en) | Device for connecting plates by means of screwing | |
DE1258664B (en) | Detachable fastening device for connecting two components | |
DE10042282B4 (en) | Door retention | |
DE19610213A1 (en) | Clamping chuck for shaft ends of tool insertion piece, e.g. hexagonal screw driver bit | |
DE10138330A1 (en) | Clamping ring for clamping workpieces has two or more clamping segments connected by elastic spacers with expanding mandrel inserted in undercut section of segments to produce force locking connection | |
DE2321346C3 (en) | Articulated fitting for foldable ladders |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19911024 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE DK ES FR GB IT LI SE |
|
17Q | First examination report despatched |
Effective date: 19930218 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE DK ES FR GB IT LI SE |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19940610 |
|
REF | Corresponds to: |
Ref document number: 59101830 Country of ref document: DE Date of ref document: 19940714 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2054489 Country of ref document: ES Kind code of ref document: T3 |
|
ET | Fr: translation filed | ||
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
EAL | Se: european patent in force in sweden |
Ref document number: 91902176.6 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20001221 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20001228 Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020111 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020131 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020131 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20020111 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050111 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20071227 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20071221 Year of fee payment: 18 Ref country code: FR Payment date: 20071220 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20071227 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20080904 Year of fee payment: 19 |
|
EUG | Se: european patent has lapsed | ||
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20091030 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20090112 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090202 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090112 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100803 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090112 |