WO1999024200A1 - Raccord rapide pour outils de foreuse a pointes de diamants, en particulier pour outils de foreuse a carottage (raccord rapide de couronne de forage) - Google Patents

Raccord rapide pour outils de foreuse a pointes de diamants, en particulier pour outils de foreuse a carottage (raccord rapide de couronne de forage) Download PDF

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Publication number
WO1999024200A1
WO1999024200A1 PCT/EP1998/006967 EP9806967W WO9924200A1 WO 1999024200 A1 WO1999024200 A1 WO 1999024200A1 EP 9806967 W EP9806967 W EP 9806967W WO 9924200 A1 WO9924200 A1 WO 9924200A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool holder
connecting pin
quick
tool
sliding ring
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.)
Ceased
Application number
PCT/EP1998/006967
Other languages
German (de)
English (en)
Inventor
Ulrich Verweyen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO1999024200A1 publication Critical patent/WO1999024200A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B23B31/107—Retention by laterally-acting detents, e.g. pins, screws, wedges; Retention by loose elements, e.g. balls
    • B23B31/1071—Retention by balls

Definitions

  • the invention relates to a quick-change connection for diamond drilling machine tools, in particular for core drilling machine tools, which are also called drill bits.
  • This also includes tools that are suitable for wet drilling and dry drilling with dust suction.
  • the quick-change connection consists of a connecting pin which can be connected to the tool, in particular a drill, with a cylindrical outer surface, with axially extending teeth molded therein and with a cone at the machine end, and a tubular tool holder with axially extending grooves into which the teeth of the connecting pin are inserted can be intervened.
  • the tool holder has locking elements, e.g. B. balls or locking bolts, which can be engaged in corresponding recesses of the connecting pin.
  • the tool is connected to the drilling machine as follows.
  • a sleeve screwed onto the outside of the tool holder is unscrewed until the locking elements loaded by a compression spring arranged inside the sleeve are released so that the connecting pin of the tool can be pushed into the tool holder.
  • the sleeve is then screwed on again, and the spring mentioned presses the locking elements into the corresponding recesses in the connecting pin, so that the tool is secured against falling out of the tool holder.
  • the screwing of the sleeve is necessary to ensure a high level of locking Applying radial force to support the centering of the boring tool ⁇ .
  • the invention is therefore based on the object of developing a quick-change connection of the type mentioned at the outset, which allows good centering even when the drilling machine is subjected to high loads and nevertheless allows the tools to be replaced much more quickly even with a drill bit length of up to 2 m .
  • the cylindrical outer surface of the connecting pin consists of two annular zones and that at least the tool-side zone is worked to fit with the corresponding hollow cylindrical zone of the tool holder.
  • the tool-side zone of the cylindrical outer surface of the connecting pin have a manufacturing tolerance of at most 0.05 mm, in particular of at most 0.03 mm. The same applies to the zone on the tool side of the corresponding cylindrical inner surface of the tool holder.
  • the other zone of the cylindrical outer surface of the connecting pin adjacent to the cone is machined for play relative to the corresponding hollow cylindrical zone of the tool holder, the play being in particular 0.5 to 1.5 mm.
  • dirt particles present in this area which is more difficult to access, do not interfere.
  • any dirt particles that may still be present are pushed out of the zones machined to fit into the inner area of the tool holder, where they also do not interfere due to the play between the tool holder and the connecting pin.
  • Another advantage is that it is easier for the user to insert the connecting pin into the tool holder.
  • a circumferential groove for receiving an elastic sealing ring is provided on the cone of the connecting pin.
  • the sealing ring serves to seal the case a central, axially running water supply from the drill through the quick-change connection to the tool.
  • Another, also very important advantage of such a sealing ring is the support of the centering of the tool, because any tolerances that may exist are compensated for by the elastic ring. Such a sealing ring is therefore also advantageous in a dry mode of operation.
  • the tapering end of the cone of the connecting pin be cylindrical and, in particular, to fit with a corresponding cylindrical section of the inner cone of the tool holder.
  • a sliding ring is provided on the tool holder, which can be moved in a spring-loaded manner in the axial direction on the tool holder. In its first position, the sliding ring holds the locking elements in their locking position and when they move against the spring force into the second position, the sliding ring releases the locking elements.
  • the slide ring does not have to be held manually in the unlocking second position when the drill or the connecting pin connected to the drill is changed, it is proposed in a particularly advantageous embodiment of the invention that the slide ring can be locked in its second position on the tool holder is.
  • the locking and securing of the sliding ring can be carried out in different ways. It is advantageous if at least one projection, in particular a pin, is arranged on the outside of the tool holder and if at least one contact surface for the projection is provided on the sliding ring for locking or securing the sliding ring. In particular, 3 such pins and contact surfaces can be present in the quick-change connection according to the invention.
  • Another advantage of the invention is that the connecting pins (drill bit fittings), which are screwed into the drill bit, even after the wear of the connecting pins (drill bit fittings), which are screwed into the drill bit, even after the wear of the connecting pins (drill bit fittings), which are screwed into the drill bit, even after the wear of the connecting pins (drill bit fittings), which are screwed into the drill bit, even after the wear of the connecting pins (drill bit fittings), which are screwed into the drill bit, even after the wear of the connecting pins (drill bit fittings), which are screwed into the drill bit, even after the wear of the connecting pins (drill bit fittings), which are screwed into the drill bit, even after the wear of the connecting pins (drill bit fittings), which are screwed into the drill bit, even after the wear of the connecting pins (drill bit fittings), which are screwed into the drill bit, even after the wear of the connecting pins
  • the output side of the drive shaft of the drill motor gear is designed as a tool holder according to the invention.
  • the advantage is the shorter design and the lower manufacturing costs.
  • FIG. 1 shows a longitudinal section through a tool holder according to a first exemplary embodiment according to the invention
  • FIG. 2 shows a side view of a connecting pin provided for use with the tool holder according to FIG. 1
  • FIG. 3 shows a plan view of the connecting pin according to FIG. 1 in the direction of arrow 1 in FIG. 2
  • FIG. 4 shows a longitudinal section through a tool holder according to a second exemplary embodiment of the invention
  • FIG. 5 shows a plan view of a connection piece for the tool holder according to FIG. 4 for dust extraction
  • FIG. 6 shows a longitudinal section through a connection piece for the tool holder according to FIG. 4 for water supply
  • FIG. 7 shows a tubular main part in longitudinal section according to a further exemplary embodiment of the invention
  • FIG. 8 shows a section along the line VIII-VIII in FIG. 7,
  • FIG. 9 shows a view of the sliding ring shown in FIG. 10, in the direction of arrow IX-IX in FIG. 10,
  • Figure 10 is a section along the line X-X in Figure 9 and
  • FIG. 11 shows a schematic illustration of part of the inner wall of the sliding ring according to FIG. 10, corresponding to the arrow XI in FIG. 10.
  • the tool holder shown in longitudinal section in FIG. 1 essentially consists of a tubular main part 2 and an outer, sleeve-shaped sliding ring 3.
  • An internal thread 4 enables the tool holder to be screwed onto a corresponding external thread of the motor or transmission shaft, not shown, of the drilling machine.
  • the inside of the tubular main part 2 faces the tool side End, a cone 5 and teeth 6 arranged between the teeth 6 of the grooves 7 for transmitting torque from the drilling machine ⁇ on to the tool.
  • the cone 5 merges into a cylindrical section 21 at its tapering end.
  • the sliding ring 3 serves to lock and unlock the locking elements, which in this case are designed as balls 8.
  • the locking elements which in this case are designed as balls 8.
  • three balls 8 are provided, of which only one is shown in FIG. 1.
  • the balls each lie within a bore in the tubular main part 2 and can be moved in a manner known per se for unlocking by axially displacing the sliding ring 3 against the force of a compression spring 9 in the direction of arrow 10, so that the one shown in FIG shown connecting pin can be inserted.
  • the inside 11 of the sliding ring 3 has an inner cross section which increases radially in the direction of the tool.
  • the compression spring is supported by a stop ring 12.
  • the connecting pin shown in Figure 2 is non-detachable with its tool-side end 13 with the tool, not shown, for. B. connected to a drill.
  • the outer cone 14 provided at the opposite end and its cylindrical end 22 are adapted to bear against the inner cone 5 or the cylindrical section 21 of the tool holder.
  • recesses 15 in the form of spherical segments, in which the balls 8 can partially lie for locking, and grooves 16 shown in dashed lines and teeth arranged between them are also provided.
  • the quick-change connection shown in FIGS. 1 to 3 enables the supply of cooling water from the drilling machine to the tool.
  • the connecting pin therefore contains a central bore 17, and a seal 18 can be provided in the tool holder between the likewise hollow gear shaft and the tubular main part 2.
  • the central hole 17 can also be used to extract drilling dust.
  • the details of the invention realized in this exemplary embodiment are explained below.
  • the essentially cylindrical outer surface of the connecting pin consists of two annular zones A and B.
  • the tool-side zone B of the connecting pin is machined to fit the corresponding hollow cylindrical zone C of the tool holder, the manufacturing tolerance in this exemplary embodiment being 0.01 mm.
  • the outer diameter of the other zone A of the connecting pin is 1 mm below the inner diameter of the corresponding hollow cylindrical zone D of the tool holder, so that an easy insertion of the connecting pin into the tool holder is ensured.
  • the tool holder shown in longitudinal section in FIG. 4 is fastened to the gear shaft of the drilling machine with an external thread 23.
  • a handle 25 attached via a ball bearing 24 and, on the opposite side of the handle 25, a connecting piece 26 for the connecting pieces 27, 28 (FIGS. 5 and 6) are provided.
  • the handle 25 and the connecting piece 26 are attached to a sleeve 29, on the inside of which the ball bearing 24 is attached, so that the handle 25 and the connecting piece 26 remain stationary even when the tool holder is rotating.
  • Via channel 30 of the A connection piece 26 can be vacuumed for dry drilling and water can be supplied for wet drilling.
  • the connecting pieces 27 and 28 are connected to the connecting piece 26.
  • a suction hose (not shown) or a water hose (not shown) is attached to the connecting pieces 27 and 28 during the drilling process.
  • FIGS. 7 to 11 A further, particularly preferred exemplary embodiment of the invention is shown in FIGS. 7 to 11.
  • three protruding pins 31 are provided on the outside of the tubular main part 2 (FIGS. 7 and 8).
  • the sliding ring 3 (FIGS. 9 and 10) carries two contact surfaces 32 at its end facing the drill. If the pins 31 bear against these first contact surfaces 32, the sliding ring is locked in its second position, in which the locking elements 8 are released are so that the connecting pin or the drill can be replaced.
  • the sliding ring 3 For the axial displacement of the sliding ring 3, it must first be turned until the pins 31 lie in an axial groove 33 in each case.
  • the position of the sliding ring relative to the pins 31 is shown schematically in FIG. 11, in which part of the inner wall of the sliding ring is shown in the region of the contact surfaces 32.
  • the different positions of the same pin are designated by the reference numerals 31a to 31d.
  • the pin 31a rests on the first contact surface 32 of the sliding ring 3, so that the sliding ring 3 is locked against the spring force in this position releasing the locking elements without the sliding ring having to be held manually in this position.
  • the sliding ring is rotated so that the pin 31b reaches the area of the groove 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Abstract

L'invention concerne un raccord rapide constitué d'un tenon de raccordement pouvant être relié à un outil, en particulier un foret, comportant une surface extérieure cylindrique, dans lequel sont formées des dents s'étendant axialement et présentant un cône (14) à son extrémité côté machine, ainsi que d'un porte-outil tubulaire comportant des rainures (7) s'étendant axialement, dans lesquelles peuvent s'engager les dents du tenon de raccordement. Le porte-outil présente des éléments de verrouillage (8) qui peuvent s'engager dans des évidements (15) correspondants du tenon de raccordement. Un changement d'outil rapide avec un bon centrage est obtenu par le fait que la surface extérieure du tenon de raccordement est constituée de deux zones annulaires (A, B) et qu'au moins la zone (B) située côté outil est façonnée de façon à être ajustée par rapport à la zone (C) cylindrique creuse correspondante du porte-outil.
PCT/EP1998/006967 1997-11-11 1998-11-04 Raccord rapide pour outils de foreuse a pointes de diamants, en particulier pour outils de foreuse a carottage (raccord rapide de couronne de forage) Ceased WO1999024200A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19749835.3 1997-11-11
DE1997149835 DE19749835A1 (de) 1997-11-11 1997-11-11 Schnellwechselanschluß für Bohrmaschinenwerkzeuge, insbesondere für Kernbohrmaschinenwerkzeuge (Bohrkronenschnellverschluß)

Publications (1)

Publication Number Publication Date
WO1999024200A1 true WO1999024200A1 (fr) 1999-05-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/006967 Ceased WO1999024200A1 (fr) 1997-11-11 1998-11-04 Raccord rapide pour outils de foreuse a pointes de diamants, en particulier pour outils de foreuse a carottage (raccord rapide de couronne de forage)

Country Status (2)

Country Link
DE (1) DE19749835A1 (fr)
WO (1) WO1999024200A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7810817B1 (en) * 2006-11-20 2010-10-12 Bradshaw Medical, Inc. Holder for replaceable tools
CN116117501A (zh) * 2023-04-17 2023-05-16 潍柴动力股份有限公司 一种套筒结构、套筒自动更换装置以及螺栓安装设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013006690U1 (de) * 2013-07-19 2013-08-07 EasyWork UG (haftungsbeschrängt) Aufnahme für eine Lochsäge und Werkzeuganordnung
CN104625714B (zh) * 2015-03-04 2017-05-31 安徽江淮汽车集团股份有限公司 一种螺栓自动拧紧机及其套筒转接组件

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290617A (en) * 1979-06-11 1981-09-22 The Boeing Company Motor quick-change chuck system for tool having cylindrically shaped adapter portion wherein relative longitudinal movement between chuck and tool being driven is eliminated
US5429457A (en) * 1993-06-30 1995-07-04 Nitto Kohki Co., Ltd. Annular cutter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9408297U1 (de) * 1994-05-20 1994-08-04 Geißler und Kuper GmbH Diamantwerkzeuge, Maschinen, 29223 Celle Kupplung für eine Bohreinrichtung
DE29711064U1 (de) * 1997-06-25 1998-02-12 Dürr, Wolfgang, 73734 Esslingen Schnelle formschlüssige Werkzeugwechseleinrichtung für rotierende Maschinen, um Rüstzeiten bei Folgewerkzeugen zu minimieren

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290617A (en) * 1979-06-11 1981-09-22 The Boeing Company Motor quick-change chuck system for tool having cylindrically shaped adapter portion wherein relative longitudinal movement between chuck and tool being driven is eliminated
US5429457A (en) * 1993-06-30 1995-07-04 Nitto Kohki Co., Ltd. Annular cutter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7810817B1 (en) * 2006-11-20 2010-10-12 Bradshaw Medical, Inc. Holder for replaceable tools
CN116117501A (zh) * 2023-04-17 2023-05-16 潍柴动力股份有限公司 一种套筒结构、套筒自动更换装置以及螺栓安装设备

Also Published As

Publication number Publication date
DE19749835A1 (de) 1999-05-20

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