EP0925881B1 - Werkzeug - Google Patents

Werkzeug Download PDF

Info

Publication number
EP0925881B1
EP0925881B1 EP98811050A EP98811050A EP0925881B1 EP 0925881 B1 EP0925881 B1 EP 0925881B1 EP 98811050 A EP98811050 A EP 98811050A EP 98811050 A EP98811050 A EP 98811050A EP 0925881 B1 EP0925881 B1 EP 0925881B1
Authority
EP
European Patent Office
Prior art keywords
zone
tool
shank
hardness
tool according
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
Application number
EP98811050A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0925881A1 (de
Inventor
Udo Hauptmann
Manfred Buchacher
Rainer Batliner
Vilmos Halasi
Erwin Waldmann
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 EP0925881A1 publication Critical patent/EP0925881A1/de
Application granted granted Critical
Publication of EP0925881B1 publication Critical patent/EP0925881B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B25D17/02—Percussive tool bits

Definitions

  • the invention relates to a tool, in particular a chisel tool for machining hard surfaces, especially of rock, concrete or the like according to the Preamble of claim 1.
  • tools in particular chisel tools
  • Tool holders of a drilling and / or chiseling device can be used.
  • Bending moments and tensile forces associated with a high number of load cycles require high fracture toughness. This zone also requires high wear resistance against surface injuries
  • high wear resistance with the Tool holder of the drilling and / or chiseling device is in frictional contact Areas necessary.
  • a chisel tool is known from WO 97/15421, which is inserted into a drilling and / or Chisel tool can be used.
  • This well-known tool consists of one Machining zone, a shaft zone, an insertion zone and an impact zone.
  • the shank zone and the insertion zone have very hard core areas, that of one softer edge area are surrounded. These hard core areas give the tool brittle properties, so that those that occur when working on a substrate high demands in the form of bending moments and tensile forces cause the tool to break quickly in the shank or insertion zone can. Due to the lower hardness of the edge area, the known tool is also susceptible to surface damage.
  • the invention has for its object an economically producible tool, in particular to create chisel tools, the overall, especially in the Shank zone and the insertion zone a high fracture toughness and a high wear resistance having.
  • the necessary high Wear resistance ensured in the shaft zone and the insertion zone.
  • a fracture toughness and wear resistance in the shaft zone and the insertion zone is advantageously achieved in that the Hardness of the core area of the shaft zone and / or the hardness of the core area of the Insertion zone at most 35 HRc and the hardness of the edge area of the shaft zone and / or the hardness of the edge region of the insertion zone is at least 50 HRc.
  • the hardness of the processing zone and / or the hardness is preferably the service zone at least 50 HRc.
  • the processing zone is advantageously off one opposite the service zone, the insertion zone and the shaft zone different material formed and by friction welding with the shaft zone connected.
  • the processing zone is made of, for example, an air-hardening steel a carbon content of at least 0.45%.
  • the impact zone, the The insertion zone and the shaft zone are made of, for example, tempered steel formed, the carbon content of which is at least 0.40%.
  • the tool can be hardened by induction hardening with different Feed speeds at constant AC frequency with, for example 10 KHz.
  • the feed rate when hardening the edge areas of the Shank zone and the insertion zone is, for example, 15-30 mm / sec. In the Machining zone and the impact zone, the feed rate becomes very strong decreased or the tool stopped for a certain amount of time in these zones curing takes place.
  • the tools are used in induction hardening, for example by means of a cooling medium quenched, which is composed of a polymeric quenching agent and water. With the help of the polymeric quenching agent, the quenching rate of the Water can be reduced.
  • the cooling medium is applied to the tool for example by means of a shower which is arranged parallel to an induction coil. In this way, the tool is immediately after leaving the induction coil deterred.
  • the tools 1, 10 shown in FIGS. 1 and 2 are composed of one Machining zone B, a shank zone adjoining the machining zone B. S, an insertion zone E adjoining the shaft zone S and an adjoining the Insertion zone E adjoining service zone A.
  • the processing zone B and the Hitting ends A are through-hardened and in the shaft zone S and the insertion zone E only the edge areas are hardened.
  • the core area of the shaft zone S and the insertion zone E has a hardness that is at most 35 HRc.
  • the hardness of the edge area the shaft zone S and the insertion zone E is 57 ⁇ 3 HRc and the hardness of the Processing zone B and the hardness of impact zone A are 57 ⁇ 3 HRc.
  • the depth D2 corresponds to the hardened edge areas of the shaft zone S and the insertion zone E. 0.10 to 0.15 times the diameter D1 of the shaft zone S.
  • the diameter D1 corresponds to the corner dimension for polygonal cross sections.
  • the polygonal Cross section in the shaft zone S and the insertion zone E shown in FIGS. 1 and 2 Tools has six corners.
  • the processing zone B of the tool shown in FIG. 1 in the form of a pointed chisel 1 tapers to a point in the machining direction.
  • the shaft zone S and the Insertion zone E have a perpendicular to the longitudinal axis of the tool Cross section with a hexagonal outer contour.
  • the insertion zone E is in one of the Area near the shaft zone S with a circumferential recess 2 provided the inclusion of locking elements of a tool holder serve in which the tool according to the invention can be used.
  • This cylindrical region 3 and the circumferential one Well 2 have, for example, a diameter that is at most the distance corresponds to two surfaces of the shaft zone S running parallel to one another.
  • Die Shank zone S and the insertion zone E have a perpendicular to the longitudinal axis of the Tool cross-section with a hexagonal outer contour.
  • the Insertion zone E has a number of oblong holes arranged uniformly distributed over the circumference Provided recesses 11, the receiving locking elements serve a tool holder in which the tool according to the invention can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP98811050A 1997-12-22 1998-10-21 Werkzeug Expired - Lifetime EP0925881B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19757271A DE19757271A1 (de) 1997-12-22 1997-12-22 Werkzeug
DE19757271 1997-12-22

Publications (2)

Publication Number Publication Date
EP0925881A1 EP0925881A1 (de) 1999-06-30
EP0925881B1 true EP0925881B1 (de) 2001-12-12

Family

ID=7853018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98811050A Expired - Lifetime EP0925881B1 (de) 1997-12-22 1998-10-21 Werkzeug

Country Status (5)

Country Link
EP (1) EP0925881B1 (zh)
JP (1) JPH11245222A (zh)
CN (1) CN1124918C (zh)
DE (2) DE19757271A1 (zh)
HU (1) HU221837B1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD734792S1 (en) 2013-03-15 2015-07-21 Black & Decker Inc. Drill bit
US9085074B2 (en) 2011-03-22 2015-07-21 Black & Decker Inc. Chisels
USD737875S1 (en) 2013-03-15 2015-09-01 Black & Decker Inc. Drill bit

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10133946B4 (de) 2001-07-17 2011-01-20 Robert Bosch Gmbh Flachmeißel
KR100475631B1 (ko) * 2002-06-14 2005-03-10 이두찬 내마모성 및 파쇄능이 향상된 브레이커 치즐과, 이를제조하기 위한 제조장치 및 제조방법과 고망간 합금강
DE102004031600B4 (de) * 2004-06-30 2006-04-20 Hilti Ag Werkzeug zur Bearbeitung eines mineralischen Untergrundes mit einem Ultraschall-Werkzeuggerät
CN100423906C (zh) * 2006-08-22 2008-10-08 朱清明 电锤用冲击凿
DE102010031313A1 (de) * 2010-07-14 2012-01-19 Hilti Aktiengesellschaft Meisselwerkzeug, Verfahren zur Herstellung eines Meisselwerkzeugsystems und Handwerkzeugmaschine
CN103009344A (zh) * 2012-11-14 2013-04-03 涂志强 六角钢凿
USD752937S1 (en) 2013-06-18 2016-04-05 Hilti Aktiengesellschaft Chisel
KR101692494B1 (ko) * 2016-02-25 2017-01-03 장철길 치즐 및 그의 제조방법
JP7139033B2 (ja) * 2018-02-27 2022-09-20 株式会社小松製作所 リッパシャンクおよびリッパ装置
EP3939748A1 (en) * 2020-07-17 2022-01-19 Hilti Aktiengesellschaft Tool with protruding structure
EP4155031A1 (en) * 2021-09-23 2023-03-29 Sandvik Mining and Construction Oy Breaking tool, breaking hammer and method of maintaining shape of breaking tool
EP4275856A1 (de) * 2022-05-10 2023-11-15 Hilti Aktiengesellschaft Meissel mit langer standzeit und verfahren zur herstellung eines solchen meissels

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE592580C (de) * 1934-02-10 Walter Huelsbruch Dr Ing Spitzeisen oder Meissel, vornehmlich fuer den Bergbau
AT377207B (de) * 1981-05-22 1985-02-25 Schobesberger Ernst Ing Verfahren zur herstellung von schaftmeisseln
GB9107147D0 (en) * 1991-04-05 1991-05-22 Philips Electronic Associated Frequency tracking arrangement,corresponding method of frequency tracking and a radio receiver embodying such a method
DE4228985A1 (de) * 1992-08-31 1994-03-03 Hilti Ag Meisselwerkzeug
JPH06297164A (ja) * 1993-04-13 1994-10-25 Mitsubishi Steel Mfg Co Ltd ブレーカー用チゼルの製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9085074B2 (en) 2011-03-22 2015-07-21 Black & Decker Inc. Chisels
USD734792S1 (en) 2013-03-15 2015-07-21 Black & Decker Inc. Drill bit
USD737875S1 (en) 2013-03-15 2015-09-01 Black & Decker Inc. Drill bit

Also Published As

Publication number Publication date
DE59802425D1 (de) 2002-01-24
JPH11245222A (ja) 1999-09-14
CN1220935A (zh) 1999-06-30
DE19757271A1 (de) 1999-06-24
CN1124918C (zh) 2003-10-22
HUP9802993A3 (en) 2000-04-28
HU221837B1 (hu) 2003-01-28
EP0925881A1 (de) 1999-06-30
HU9802993D0 (en) 1999-02-01
HUP9802993A2 (hu) 1999-06-28

Similar Documents

Publication Publication Date Title
EP0925881B1 (de) Werkzeug
EP0820530B1 (de) Schraubendreher oder Schraubendrehereinsatz
EP0657617B1 (de) Gesteinsbohrer
EP1466990B1 (de) Schraube mit einer partiell gehärteten Funktionsspitze und Verfahren zu ihrer Herstellung
EP0799387B1 (de) Loch- und gewindeformende schraube sowie verfahren zum eindrehen derselben
EP0433876B1 (de) Werkzeug zum Schlagbohren und Werkzeugaufnahme für schlagbohrende Werkzeuge
DE2619210A1 (de) Stabilisiervorrichtung fuer einen bohrstrang
DE2636494A1 (de) Selbstbohrende und reibende schraube
DE102004053803B4 (de) Gewindefurchende Schraube
EP0171358A2 (de) Bohrwerkzeug für Handbohrmaschinen
EP1237682A1 (de) Handwerkzeug, insbesondere schraubwerkzeug
DE19528512A1 (de) Verschleißteile und Verfahren zu deren Herstellung
EP0542683A1 (de) Werkzeug zum Schlagbohren und Werkzeugaufnahme für schlagbohrende Werkzeuge
DE2807353A1 (de) Gesteins-bohrspitze
EP1630428B1 (de) Befestigungsbolzen mit zunehmender Gewindeprofilierung
DE102007000607A1 (de) Gewindefurchende Schraube
DE202004012846U1 (de) Brechwerkzeug mit Nuten zur verbesserten Spaltwirkung
EP1125662A2 (de) Bohrer zum Bohren von Gestein
EP0361189A1 (de) Bohrwerkzeug mit schraubenförmigem Schaft
DE29521489U1 (de) Verschleißteile
EP2832868B1 (de) Presswerkzeug sowie Verfahren zur Herstellung eines Presswerkzeuges
CH669557A5 (zh)
DE3443636C2 (de) Schriftlochbohrer zur Verwendung in einer Hammer- oder Schlagbohrmaschine
EP0748668A2 (de) Verfahren zur Herstellung von Drehbohrwerkzeugen
DE2656795B2 (de) Schlagwerkzeug zum Einsetzen in einen Abbau- bzw. Aufbruchhammer

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19991230

AKX Designation fees paid

Free format text: CH DE FR GB IT LI SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 20010404

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REF Corresponds to:

Ref document number: 59802425

Country of ref document: DE

Date of ref document: 20020124

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20020226

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: CH

Payment date: 20081031

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20081029

Year of fee payment: 11

Ref country code: SE

Payment date: 20081022

Year of fee payment: 11

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091031

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

Effective date: 20091021

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: 20091022

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20171024

Year of fee payment: 20

Ref country code: DE

Payment date: 20171019

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20171019

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59802425

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20181020

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 EXPIRATION OF PROTECTION

Effective date: 20181020