WO2013068152A1 - Trépan de roche et procédé destiné à fabriquer un trépan de roche - Google Patents

Trépan de roche et procédé destiné à fabriquer un trépan de roche Download PDF

Info

Publication number
WO2013068152A1
WO2013068152A1 PCT/EP2012/067602 EP2012067602W WO2013068152A1 WO 2013068152 A1 WO2013068152 A1 WO 2013068152A1 EP 2012067602 W EP2012067602 W EP 2012067602W WO 2013068152 A1 WO2013068152 A1 WO 2013068152A1
Authority
WO
WIPO (PCT)
Prior art keywords
armor
core
rock bit
head
rock
Prior art date
Application number
PCT/EP2012/067602
Other languages
German (de)
English (en)
Inventor
Rainer Widmann
Hans-Peter Fuessl
Alexander Volz
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2013068152A1 publication Critical patent/WO2013068152A1/fr

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/04—Welding for other purposes than joining, e.g. built-up welding
    • B23K9/042—Built-up welding on planar surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/124—Circuits or methods for feeding welding wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/26—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by impact tools, e.g. by chisels or other tools having a cutting edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/20—Tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/21—Metals
    • B25D2222/51—Hard metals, e.g. tungsten carbide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/72—Stone, rock or concrete

Definitions

  • the invention relates to a rock bit according to the preamble of
  • Claim 1 and a method for producing a rock bit according to claim 8.
  • the object of the invention is to propose a rock bit and a method for the production of a rock bit, which has a thickness in the tenth mm range to mm
  • the rock bit according to the invention has a coating, which is formed as armor, which consists of at least two layers, wherein the individual layers each of a plurality of juxtaposed
  • the rock bit has a wear protection, which In particular, its thickness guarantees a long service life of the rock bit and which, due to its thickness, also allows the relevance of the quality of the core material for the properties of the bit to take a back seat, so that the core can be produced from comparatively inexpensive material with a low production cost without thereby the quality of the rock chisel is negatively influenced.
  • the core of the invention is thus a rock bit, in which by the thickness of its executed as an armor coating the properties of the
  • Rock Chisel are determined essentially by its armor, so that required for the core of the rock bit material costs and
  • the armor by their layer structure between their layers no weaknesses, since the individual layers are formed of individual welds and are optimally connected together by a variety of individual welds.
  • the invention further provides to form the second material, from which the armor is formed, with a hardness of at least 60 HRC. As a result, an optimally designed for the stone machining chisel is given.
  • the invention provides an education in the core of the head
  • the invention also provides, by the armor at the core of the head, at least one striking plate adjacent to the cutting edge or cutting tip forming a striking surface. By such a continuation of the cutting edge or the cutting tip, the armor protects the head yet
  • the armoring is intended to carry out the armoring with a thickness of 0.5 mm to 1.5 mm and in particular to form at least three layers. With such a dimensioning of the armor this is still fully effective even after a considerable wear of over 80%, so that there is a long service life of the rock bit.
  • the armor has a hardness, which is in particular in a range of HRC 60 to HRC 80, wherein the armor comprises in particular a steel alloy or in particular comprises a noble metal alloy or In particular hard material comprises or in particular comprises hard metal components.
  • the genanten materials are optimally suitable for the production of an armor in such a hardness range above 60 HRC.
  • the invention provides to let the number of welds per layer of a lowermost, in connection with the main body of the working head layer to a topmost layer in particular remain the same or in particular steadily decrease or in particular decrease in at least one section and in at least to remain the same in another section.
  • the cutting edge or the cutting tip and in particular the cutting plate in layers by a plurality of successive welding operations from a welding wire, wherein the first, lowest Layer is welded onto a surface portion of the core of the body and wherein each subsequent, higher-lying layer on each
  • Explosive bodies can be produced.
  • a cold metal transfer method is used as the welding method. This allows spot welds of the same size to be set accurately.
  • welding is carried out with a welding wire which in particular comprises a steel alloy or in particular comprises a noble metal alloy or in particular comprises hard material or in particular comprises hard metal components, wherein the armor formed from the welding wire after the welding process has a hardness of at least 60 HRC. If in the process such Welding wires find use, the desired hardness can be without
  • the invention provides for hardening the shank and the core of the head prior to welding the armor in at least one thermal hardening operation. This makes it possible to avoid a too large difference in hardness between the armor and the body and to ensure optimum cohesion between the body and armor.
  • a striking plate is understood as an armoring which adjoins a cutting edge or cutting surface directly.
  • the striking plate is called
  • Figure 1 and 2 two views of a main body of an inventive
  • Rock chisel which is designed as a flat chisel
  • Figures 3 and 4 two views of a first embodiment of a
  • Figure 5 and 6 two views of a second embodiment of a
  • Figure 7 and 8 two views of a third embodiment of a
  • Figure 1 1 and 12 two views of a fifth embodiment of a
  • Figures 13 and 14 two views of a sixth embodiment of a
  • rock bit according to the invention which is designed as a chisel
  • FIG. 15 a sectional view of a seventh embodiment variant of a
  • rock bit according to the invention which is designed as a pointed chisel
  • Figure 16 a section through an armor of a club face of the in
  • FIG. 7 shows a rock bit
  • 17 shows a section through an armor formed by an armor
  • FIG. 18 shows a section through the rock bit shown in FIG. 11.
  • FIG 1 is a main body 1 of one shown in Figures 3 and 4
  • the main body 1 is formed in one piece and comprises a shaft 3 shown cut off and a core 4 of a head 5 (see FIG. 3).
  • the main body 1 is formed from a first material W1.
  • the shaft 3 is designed in particular as a system insertion end, which is designed, for example, as an SDSplus clamping shaft or SDSmax clamping shaft for commercially available rotary hammers.
  • the main body 1 is formed as a base body for a flat chisel 6 (see FIG. 3). In the figure 2, the base body 1 is shown from a direction indicated in the figure 1 arrow II. From the synopsis of FIGS.
  • an end face 7 of the main body 1 oriented perpendicular to a direction of impact x is formed as a rectangular surface 8.
  • an armor 9 is applied to the end face 7 of the core 4, through which a
  • the armor 9 is formed of a second material W2 and is - as shown in the schematic sectional view shown in Figure 17 according to the section line XVII-XVII - from three layers 1 1 a, 1 1 b and 1 1 c formed, the number the welding points 12, from which the individual layers 1 1 a, 1 1 b and 1 1 c are formed, from the lowermost layer 1 1 a, which is applied directly to the end face 7 of the core 4, to the uppermost layer 1 1 c decreases from layer to layer.
  • the material W2 far greater hardness than the material W1.
  • FIG. 4 shows the rock bit 2 from an arrow direction IV shown in FIG.
  • the individual layers 1 1 1 a, 1 1 b and 1 1 c each have a layer thickness d1 1 a, d1 1 b and d1 1 c of about 0.3 mm. This results in a measured in the direction of impact x along a longitudinal axis L2 of the rock bit 2 thickness D9 of the armor 9 of about 0.9 mm.
  • FIG. 17 shows the spot welds 12 for the sake of clarity without
  • FIGS. 5 and 6 show a second embodiment variant of a rock bit 13 according to the invention in two side views.
  • the rock bit 13 is as
  • FIGS. 7 and 8 show a third embodiment variant of a rock bit 22 according to the invention in two side views.
  • the rock bit 22 is as
  • Plates 23, 24 form impact plates P23, P24.
  • the armor 23, which forms the striking surface 17 in regions is made up of three layers 25a, 25b and 25c.
  • the three layers 25a, 25b and 25c consist of individual spot welds 12, the number of spot welds 12 decreasing from the bottommost layer 25a to the topmost layer 25c to ensure a wedge-shaped transition into the cutting edge 10 and the core 4 of the head 5 ( see FIG. 8).
  • the striking surface 17 is partially formed by the armor 23 and partly by the core 4 of the head 5.
  • the head 5 of the rock bit 22 at a transition of the armor 23 and 24 on the core 4 of the head 5 each have a shoulder 26 and 27, whereby the rock bit 22 against the direction of impact x behind the cutting edge 10th rejuvenated.
  • FIGS. 9 and 10 show a fourth embodiment of a rock bit 28 according to the invention in two side views.
  • the rock bit 28 is designed as a flat chisel 6 and is based as well as the first to third
  • FIGS. 11 and 12 show a fifth embodiment of a rock bit 30 according to the invention in two side views.
  • the rock bit 30 is as
  • armor 31, 32 which Partial impact surfaces 17, 18 form, not formed as a planar armor, but as armor 31 and 32 formed, which are composed of individual, spaced apart explosive devices 33.
  • the explosive devices 33 are designed as local, drop-shaped hard points, which locally prove an increased explosive effect.
  • the explosive devices 33 are positioned and dimensioned in position on the core 4 of the head 5 according to individual requirements.
  • the rock bit 30 thus comprises, in addition to an armoring 9 forming a cutting edge 10, two further armours 31, 32 which are each formed by explosive devices 33 and form a special type of impact plates P31, P32.
  • FIG 18 is a schematic sectional view through one of
  • Explosive device 33 according to the section line XVI I l-XVI 11 shown.
  • the explosive device 33 is constructed in three layers with layers 34a, 34b and 34c and has a front side 35 which is aligned in the direction of impact x on an unillustrated material to be processed and which has an angle a35 to the core 4. Contrary to the direction of impact x, the explosive device 33 runs out with a rear side 36, which leads to the
  • Core 4 has an angle a36, where ⁇ 35 ⁇ a36.
  • the rock bit 37 is designed as a chisel 38, in which one in a view against a direction of impact x U-shaped
  • Trained cutting edge 39 is formed as armor 40.
  • FIG. 15 shows a sectional side view of a seventh embodiment variant of a rock bit 41 according to the invention.
  • the rock bit 41 is as
  • Pointed chisel 42 executed.
  • a core 4 of a head 5 of the rock bit 41 is completed by a first armor 43, which forms a cutting tip 44 and a chisel tip, and a second armor 45, which forms a cone-shaped jacket 46.
  • the armor 43 is formed by five layers 47a to 47e and the armor 45 by two circumferential layers 48a, 48b, wherein the individual
  • Layers 47a to 47e and 48a, 48b are formed from individual spot welds.
  • the armor 43 goes on its outer surface in the armor 45 on.
  • the armor 43 is welded, which forms the bit tip 44, and then the armor 45 welded, which forms a cone-shaped striking surface 49 and a curved impact plate P49.
  • Armor 45 is here welded to the armor 43.
  • the rock bit 41 also comprises a shaft 3, wherein the shaft 3 and the core 4 without the armours 43 and 45 form a base body 1.
  • the invention is not limited to illustrated or described embodiments. Rather, it includes developments of the invention within the scope of the patent claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mining & Mineral Resources (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

L'invention concerne un trépan de roche (2) et un procédé destiné à fabriquer un trépan de roche (2), le trépan de roche (2) comprenant une tige (3) et une tête (5), le tête (5) comprenant un noyau (4) et un revêtement, la tige (3) et le noyau (4) étant réalisés d'une seule pièce en un premier matériau (W1) pour ainsi former un corps de base (1), ledit revêtement étant réalisé en un deuxième matériau (W2) qui est différent du premier matériau (W1). Selon l'invention, ledit revêtement est réalisé sous forme d'un blindage (9) constitué d'au moins deux couches, chacune desdites couches étant formée à partir de plusieurs points de soudage juxtaposés et présentant une épaisseur de couche d'au moins 0,3 mm.
PCT/EP2012/067602 2011-11-07 2012-09-10 Trépan de roche et procédé destiné à fabriquer un trépan de roche WO2013068152A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011085818A DE102011085818A1 (de) 2011-11-07 2011-11-07 Gesteinsmeißel und Verfahren zur Herstellung eines Gesteinsmeißels
DE102011085818.0 2011-11-07

Publications (1)

Publication Number Publication Date
WO2013068152A1 true WO2013068152A1 (fr) 2013-05-16

Family

ID=46832389

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/067602 WO2013068152A1 (fr) 2011-11-07 2012-09-10 Trépan de roche et procédé destiné à fabriquer un trépan de roche

Country Status (2)

Country Link
DE (1) DE102011085818A1 (fr)
WO (1) WO2013068152A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109290661A (zh) * 2017-07-25 2019-02-01 唐山瑞格特机械设备制造有限公司 一种新型高炉开口钎头的焊接方法
DE102019200776A1 (de) * 2019-01-23 2020-07-23 Robert Bosch Gmbh Einsatzwerkzeug und Verfahren zur Herstellung eines Einsatzwerkzeugs

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1082136A (en) * 1963-12-10 1967-09-06 Johann Hinrich Lerbs Wear resisting, non-magnetizable tools
US4864094A (en) * 1988-01-13 1989-09-05 Metallurgical Industries, Inc. Process of fabricating a cutting edge on a tool and a cutting tool made thereby
US4944559A (en) * 1988-06-02 1990-07-31 Societe Industrielle De Combustible Nucleaire Tool for a mine working machine comprising a diamond-charged abrasive component
DE9016655U1 (de) * 1990-12-08 1991-02-28 Jacobs, Willi, 5202 Hennef Rundschaftmeißel
JPH091988A (ja) 1995-06-20 1997-01-07 Showa Kiyouzai Kk 彫刻刀の製造方法
US20020139778A1 (en) * 2001-03-27 2002-10-03 Rolls-Royce Plc Method and apparatus for forming a workpiece
EP1384546A2 (fr) 2002-07-23 2004-01-28 Illinois Tool Works Inc. Procédé de commande d' un poste de soudage à l'arc avec court-circuits
WO2006125234A1 (fr) 2005-05-24 2006-11-30 Fronius International Gmbh Procede de soudage par transfert de metal a froid et dispositif de soudage
JP2007098532A (ja) * 2005-10-06 2007-04-19 Konyo:Kk 手持ち工具及びその製造方法
US20080054707A1 (en) * 2006-09-01 2008-03-06 Hall David R Formation Breaking Assembly
US20100175926A1 (en) * 2009-01-15 2010-07-15 Baker Hughes Incorporated Roller cones having non-integral cutting structures, drill bits including such cones, and methods of forming same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806128A1 (de) * 1988-02-26 1989-09-07 Ischebeck Friedrich Gmbh Bohr-injektionsanker
US5643531A (en) * 1989-12-12 1997-07-01 Samsung Heavy Industry Co., Ltd. Ferrous alloy composition and manufacture and coating methods of mechanical products using the same

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1082136A (en) * 1963-12-10 1967-09-06 Johann Hinrich Lerbs Wear resisting, non-magnetizable tools
US4864094A (en) * 1988-01-13 1989-09-05 Metallurgical Industries, Inc. Process of fabricating a cutting edge on a tool and a cutting tool made thereby
US4944559A (en) * 1988-06-02 1990-07-31 Societe Industrielle De Combustible Nucleaire Tool for a mine working machine comprising a diamond-charged abrasive component
DE9016655U1 (de) * 1990-12-08 1991-02-28 Jacobs, Willi, 5202 Hennef Rundschaftmeißel
JPH091988A (ja) 1995-06-20 1997-01-07 Showa Kiyouzai Kk 彫刻刀の製造方法
US20020139778A1 (en) * 2001-03-27 2002-10-03 Rolls-Royce Plc Method and apparatus for forming a workpiece
EP1384546A2 (fr) 2002-07-23 2004-01-28 Illinois Tool Works Inc. Procédé de commande d' un poste de soudage à l'arc avec court-circuits
WO2006125234A1 (fr) 2005-05-24 2006-11-30 Fronius International Gmbh Procede de soudage par transfert de metal a froid et dispositif de soudage
JP2007098532A (ja) * 2005-10-06 2007-04-19 Konyo:Kk 手持ち工具及びその製造方法
US20080054707A1 (en) * 2006-09-01 2008-03-06 Hall David R Formation Breaking Assembly
US20100175926A1 (en) * 2009-01-15 2010-07-15 Baker Hughes Incorporated Roller cones having non-integral cutting structures, drill bits including such cones, and methods of forming same

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Publication number Publication date
DE102011085818A1 (de) 2013-05-08

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