EP0974428A3 - Handheld drilling machine with compressed-air-operated percussion mechanism - Google Patents

Handheld drilling machine with compressed-air-operated percussion mechanism Download PDF

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Publication number
EP0974428A3
EP0974428A3 EP99810527A EP99810527A EP0974428A3 EP 0974428 A3 EP0974428 A3 EP 0974428A3 EP 99810527 A EP99810527 A EP 99810527A EP 99810527 A EP99810527 A EP 99810527A EP 0974428 A3 EP0974428 A3 EP 0974428A3
Authority
EP
European Patent Office
Prior art keywords
pneumatic cylinder
air
ventilation
compressed
drilling
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.)
Withdrawn
Application number
EP99810527A
Other languages
German (de)
French (fr)
Other versions
EP0974428A2 (en
Inventor
Matthias Blessing
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP0974428A2 publication Critical patent/EP0974428A2/en
Publication of EP0974428A3 publication Critical patent/EP0974428A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • 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
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/04—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles
    • 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
    • B25D2217/0011—Details of anvils, guide-sleeves or pistons
    • B25D2217/0023—Pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/341—Use of external compressors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)

Abstract

Ein Handbohrgerät weist ein drucklufterregtes Schlagwerk zur Erzeugung von axialen Schlägen auf, das über ein Schaltventil mit einer Druckluftquelle verbunden ist. Das Schlagwerk (21) umfasst einen Pneumatikzylinder (22), der wenigstens eine Belüftungs-und wenigstens eine Entlüftungsbohrung (23, 24) aufweist. Innerhalb des Pneumatikzylinders (22) ist ein Schlagkolben (30) geführt, der mit Druckluft beaufschlagbar und periodisch gegen ein Döpperelement (15) beschleunigbar ist. Das Döpperelement (15) durchsetzt eine vordere Begrenzungswand (25) des Pneumatikzylinders (22) axial und dient der Übertragung von axialen Schlägen an ein in eine Werkzeugaufnahme eingespanntes Bohr- oder Meisselwerkzeug. Ein im Gehäuse angeordneter Drehantrieb erlaubt eine Rotation des in die Werkzeugaufnahme eingespannten Bohr- oder Meisselwerkzeugs um seine Achse. Das Schaltventil ist im Schlagkolben integriert und weist Aussparungen und Bohrungen (46 - 52) auf, die abwechselnd mit der Be- bzw. der Entlüftungsbohrung (23, 24) im Pneumatikzylinder (22) in Wirkverbindung bringbar sind.

Figure 00000001
A hand drill has an air-powered hammer mechanism for generating axial impacts, which is connected to a compressed air source via a switching valve. The striking mechanism (21) comprises a pneumatic cylinder (22) which has at least one ventilation and at least one ventilation hole (23, 24). A percussion piston (30) is guided within the pneumatic cylinder (22) and can be pressurized with compressed air and periodically accelerated against a striking element (15). The striking element (15) passes axially through a front boundary wall (25) of the pneumatic cylinder (22) and is used to transmit axial impacts to a drilling or chiseling tool clamped in a tool holder. A rotary drive arranged in the housing allows the drilling or chisel tool clamped in the tool holder to rotate about its axis. The switching valve is integrated in the percussion piston and has cutouts and bores (46 - 52), which can alternately be brought into operative connection with the ventilation bore (23, 24) in the pneumatic cylinder (22).
Figure 00000001
EP99810527A 1998-07-22 1999-06-14 Handheld drilling machine with compressed-air-operated percussion mechanism Withdrawn EP0974428A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19832946A DE19832946A1 (en) 1998-07-22 1998-07-22 Hand drill with air-powered hammer mechanism
DE19832946 1998-07-22

Publications (2)

Publication Number Publication Date
EP0974428A2 EP0974428A2 (en) 2000-01-26
EP0974428A3 true EP0974428A3 (en) 2003-02-12

Family

ID=7874904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810527A Withdrawn EP0974428A3 (en) 1998-07-22 1999-06-14 Handheld drilling machine with compressed-air-operated percussion mechanism

Country Status (5)

Country Link
US (1) US6209659B1 (en)
EP (1) EP0974428A3 (en)
JP (1) JP2000071117A (en)
CN (1) CN1251794A (en)
DE (1) DE19832946A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10033362A1 (en) * 2000-07-08 2002-01-17 Hilti Ag Electric hand tool with empty stroke shutdown
DE10117123A1 (en) * 2001-04-06 2002-10-17 Bosch Gmbh Robert Hand tool
DE10145464C2 (en) * 2001-09-14 2003-08-28 Wacker Construction Equipment Drill and / or impact hammer with idle control depending on the contact pressure
DE10259566A1 (en) * 2002-12-19 2004-07-01 Hilti Ag Hitting electric hand machine tool
US6715562B1 (en) * 2003-05-08 2004-04-06 Power Network Industry, Co., Ltd. Output shaft locking device
EP1514518A1 (en) * 2003-09-11 2005-03-16 SDGI Holdings, Inc. Impulsive percussion instruments for endplate preparation
JP4200918B2 (en) 2004-02-09 2008-12-24 日立工機株式会社 Drilling machine
DE102005028918A1 (en) * 2005-06-22 2006-12-28 Wacker Construction Equipment Ag Drilling and/or percussive hammer for making holes has delay device controlling valve during closing
SE529615C2 (en) * 2006-02-20 2007-10-09 Atlas Copco Rock Drills Ab Percussion and rock drill and method for controlling the stroke of the piston
DE102006000253A1 (en) * 2006-05-30 2007-12-06 Hilti Ag Striking hand tool with axially movable percussion
DE102006054288A1 (en) * 2006-11-17 2008-05-21 A & M Electric Tools Gmbh Rotary Hammer
US7926690B1 (en) * 2007-06-13 2011-04-19 Tippmann Sr Dennis J Combustion powered driver
DE102007050307A1 (en) * 2007-10-22 2009-04-23 Robert Bosch Gmbh Hand tool
US7868750B2 (en) 2008-02-06 2011-01-11 Ford Global Technologies, Llc System and method for controlling a safety restraint status based on driver status
US8280580B2 (en) 2008-02-06 2012-10-02 Ford Global Technologies, Llc System and method for controlling electronic stability control based on driver status
US8306728B2 (en) 2008-02-06 2012-11-06 Ford Global Technologies, Llc System and method for controlling object detection based on driver status
US8258939B2 (en) 2008-02-06 2012-09-04 Ford Global Technologies, Llc System and method for controlling one or more vehicle features based on driver status
US8106759B2 (en) 2008-02-06 2012-01-31 Ford Global Technologies, Llc System and method for controlling early low fuel warning based on driver status
US8240394B2 (en) * 2008-12-09 2012-08-14 Sp Air Kabushiki Kaisha Hammer with vibration reduction mechanism
US10052747B2 (en) * 2012-09-03 2018-08-21 Makita Corporation Hammer tool
AT513849B1 (en) * 2013-03-04 2014-08-15 Tmt Bbg Res And Dev Gmbh Control of the working frequency of a striking mechanism
US10189173B1 (en) * 2017-11-16 2019-01-29 Storm Pneumatic Tool Co., Ltd. Pneumatic tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506742A (en) * 1983-04-29 1985-03-26 M Group Corporation Vibrationless percussion tool
GB2188270A (en) * 1986-03-25 1987-09-30 Bergwerksverband Gmbh Hammer drill for percussion drilling

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US450782A (en) * 1891-04-21 Pneumatic tool holding and operating device
US682492A (en) * 1901-04-29 1901-09-10 Walter Payton Fluid-pressure hammer.
US2210020A (en) * 1939-01-23 1940-08-06 Anderson Norman Power hammer
US2748751A (en) * 1953-10-16 1956-06-05 Raymond Concrete Pile Co Fluid actuated power hammers
US3010439A (en) * 1960-05-27 1961-11-28 Havilland Aircraft Of Canada D Vibrator motor
US4286929A (en) * 1977-03-23 1981-09-01 Rodney T. Heath Dual pressure gas motor, and method of operation
US4846634A (en) * 1987-12-14 1989-07-11 Ingersoll-Rand Company Water to emulsion transformer
US5269382A (en) * 1992-05-08 1993-12-14 Esco Corporation Impact device
JP3292969B2 (en) * 1995-08-18 2002-06-17 株式会社マキタ Hammer drill
GB9524180D0 (en) * 1995-11-27 1996-01-31 Black & Decker Inc Hammer mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506742A (en) * 1983-04-29 1985-03-26 M Group Corporation Vibrationless percussion tool
GB2188270A (en) * 1986-03-25 1987-09-30 Bergwerksverband Gmbh Hammer drill for percussion drilling

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BOILLAT P ET AL: "LES DIFFERENTES TECHNIQUES DE FORATION", INDUSTRIE MINERALE - MINES ET CARRIERES, EDITIONS GEDIM. ST ETIENNE, FR, vol. 75, no. SUPPLEMENT, 1 April 1993 (1993-04-01), pages 36 - 70, XP000383297, ISSN: 0994-2556 *

Also Published As

Publication number Publication date
US6209659B1 (en) 2001-04-03
EP0974428A2 (en) 2000-01-26
JP2000071117A (en) 2000-03-07
CN1251794A (en) 2000-05-03
DE19832946A1 (en) 2000-01-27

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