Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B51/00—Tools for drilling machines
  • B23B51/04—Drills for trepanning
  • B23B51/0473—Details about the connection between the driven shaft and the tubular cutting part; Arbors
• • 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
  • B23B31/005—Cylindrical shanks of tools
• • 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
  • B23B31/003—Work or tool ejection means
• • 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
  • B23B31/008—Chucks; Expansion mandrels; Adaptations thereof for remote control with arrangements for transmitting torque
• • 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
  • B23B31/113—Retention by bayonet connection
• • 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
  • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
  • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
  • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2226/00—Materials of tools or workpieces not comprising a metal
  • B23B2226/31—Diamond
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2226/00—Materials of tools or workpieces not comprising a metal
  • B23B2226/75—Stone, rock or concrete
• • 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
  • Y10T279/17411—Spring biased jaws
  • Y10T279/17461—Nonresilient member biased by a resilient member
• • 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
  • Y10T279/17888—Tang offset within socket
• • 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
  • Y10T408/00—Cutting by use of rotating axially moving tool
  • Y10T408/89—Tool or Tool with support
  • Y10T408/895—Having axial, core-receiving central portion
• • 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
  • Y10T408/00—Cutting by use of rotating axially moving tool
  • Y10T408/89—Tool or Tool with support
  • Y10T408/907—Tool or Tool with support including detailed shank

Definitions

• the present invention relates to a drilling tool according to the preamble of claim 1 and a tool holder according to the preamble of claim 6.
• Drilling tools in particular core drilling tools are used for incorporating holes in different materials, eg. As concrete, reinforced concrete, steel or rock used.
• the drilling tool is detachably mounted or received on a tool holder, so that by means of an electric or internal combustion engine on the tool holder, the drilling tool is displaceable in a rotational movement about a longitudinal axis of the drilling tool.
• the tool holder is required to be able to work with different diameters bores with different diameter drill bits. In addition, an exchange of drilling tools due to wear is required.
• a receiving part or a carrier body of the tool holder has at a rear end on a recesses with a first and second counter-contact surface, which are inclined at an angle about 30 ° to 45 ° to a longitudinal axis of the drilling tool and the tool holder.
• the drilling tool has at a rear locking surface bulges with a first and second Contact surface and the contact surfaces are inclined at an angle of approximately 30 ° to 45 ° to a longitudinal axis of the drilling tool and the tool holder.
• the bulges are arranged on the drilling tool in the recesses of the receiving part and the first bearing surface is located on the first counter-contact surface for transmitting a force from the receiving part to the drilling tool. Due to the inclination of the first abutment and counter-contact surface, this results in a pressing force on the drilling tool, which is directed to the drilling tool to throw out of the tool holder, so that thereby a receiving spring on the receiving part is to be sized large. As a result, occur in a disadvantageous manner greater pressure forces on the drilling tool and the tool holder.
• the contact with the first contact and counter contact surfaces results in point contact with high force peaks and thus abrasive wear.
• DE 198 10 91 1 A1 shows a drilling tool having a plug-in end, the plug-in end having a substantially cylindrical guide region with at least one guide surface and a locking region radially projecting beyond the guide region, wherein the locking region substantially perpendicular to the longitudinal axis of the drilling tool extending locking surfaces and perpendicular to Longitudinal axis of the drilling tool has a deviating from a circular cross-section.
• the object of the present invention is therefore to provide a drilling tool and a tool holder in which substantially no drilling tool is transferred from the tool holder ejecting axial compressive forces to the drilling tool in a transfer of torque from the tool holder to the drilling tool.
• a drilling tool comprising a drill neck, a cutting element attached to the drill neck, a Fastening portion for attachment to a tool holder, wherein the fastening portion is divided into at least one guide portion and in a locking portion, wherein at the locking portion at least one in the axial direction of the remaining locking portion superior positive locking geometry, in particular a bulge is formed for transmitting a torque from the tool holder the drilling tool and the at least one interlocking geometry in the tangential direction each have two contact surfaces, wherein at least a first of the two contact surfaces is formed substantially parallel to a longitudinal axis of the drilling tool and the at least one first contact surface is used to transmit the torque.
• the at least one first of the two abutment surfaces is substantially, ie with a deviation of less than 30 °, 20 ° or 10 °, formed or aligned parallel to the longitudinal axis of the drilling tool.
• the at least one first contact surface has a greater extent in the axial direction than the at least one second of the two contact surfaces and / or the at least one first contact surface is divided in the axial direction into an outer and inner contact part surface and the at least one inner contact part surface ,
• all the inner abutment surfaces is or are formed substantially parallel to the longitudinal axis of the drilling tool and / or all first abutment surfaces are formed substantially parallel to a longitudinal axis of the drilling tool.
• the at least one outer bearing part surface is formed at an acute angle to the longitudinal axis and / or at least two or three positive locking geometries are formed on the drilling tool and / or the at least one positive locking geometry, in particular bulge, has between the two contact surfaces in the axial direction a substantially constant extent.
• the at least one interlocking geometry, in particular bulge or recess, is formed between the two contact surfaces as a flat or planar surface.
• the planar or plane surface is preferably aligned at the form-fitting geometry and / or at the counter-form-closure geometry essentially perpendicular to the longitudinal axis.
• At least one, preferably at least two or three, locking lugs or locking lugs are or are formed on the locking area and on the at least one locking lug is the positive locking geometry, in particular on a rear end of the drilling tool facing rear locking surface formed.
• the drilling tool is a core drilling tool with a hollow pipe socket as a Bohrstutzen and a cutting ring as a cutting element and preferably the cutting ring is equipped with diamonds. Core drilling tools are used in particular for drilling holes in concrete or reinforced concrete.
• Inventive tool holder for receiving a drilling tool, in particular a drilling tool described in this patent application, comprising a receiving part with at least one Jacobform gleichgeometrie, in particular a recess for the positive transmission of torque from the at least one Gegenform gleichgeometrie on a form fit geometry on the drilling tool and the at least one Gegenform gleichgeometrie in tangential Direction each having two counter-bearing surfaces, preferably an ejector for raising the drilling tool from the tool holder, a receiving part and the ejector enclosing sleeve, wherein at least a first of the two counter-bearing surfaces is formed substantially parallel to a longitudinal axis of the drilling tool and the at least one first counter-contact surface Transmission of the torque is used.
• the at least one first counter-contact surface in the axial direction has a greater extent than a second of the two counter-contact surfaces and / or the at least one first counter-contact surface is divided in the axial direction in an outer and inner Jacobstromteil constitutional and the at least one outer Jacobstromteil constitutional, in particular all outer Jacobisteil vom , Is or are formed substantially parallel to a longitudinal axis of the drilling tool and / or tool holder and / or all first counter-bearing surfaces are formed substantially parallel to a longitudinal axis of the drilling tool.
• the at least one inner counter-abutment part surface is formed at an acute angle to the longitudinal axis and / or formed on the tool holder at least two or three symbolsformschlußgeometrien and / or the at least one Gegenform gleichgeometrie, in particular recess, between the two counter-contact surfaces in the axial direction has substantially constant extension.
• the ejector is annular and / or the ejector is urged by an ejector spring for ejecting the drilling tool from the tool holder and / or the receiving part is acted upon by a receiving spring with compressive force, so that the receiving part under a compressive force on a rear locking surface of the drilling tool can be placed and / or the tool holder has a bayonet connection for attachment of the drilling tool in the tool holder.
• the bayonet connection comprises the sleeve, the receiving part and the receiving spring.
• the positive locking geometry is formed on the drilling tool, in particular the locking region, as a recess and the counter-form-locking geometry on the tool holder, in particular on the receiving part, formed as a bulge.
• the counter-form-closure geometry is formed substantially geometrically complementary to the positive-fit geometry.
• the drilling tool and / or the tool holder consists at least partially, in particular completely, of metal, in particular steel.
• a drilling system comprises a drilling tool described in this patent application and a tool holder described in this patent application and a drive motor, in particular an electric motor, and preferably a stand frame.
• the drilling tool is attached to the tool holder on the drilling system.
• 1 is a longitudinal section of a drilling tool
• Fig. 2 is a tangential section of a recess on a
• Fig. 4 is a perspective view of the invention
• Fig. 5 is another perspective view of the drilling tool and the
• Tool holder according to FIG. 4, 6 is a front view of the tool holder of FIG. 4,
• FIG. 7 shows a longitudinal section X-X of the tool holder according to FIG. 6 and FIG. 8 shows a side view of a drilling system.
• a drilling system 5 shown in FIG. 8 comprises a drilling tool 1 embodied as a core drilling tool 2, a tool holder 3 and a drive motor designed as an electric motor 52, as well as a stand frame 51.
• the drive motor can also be designed as an internal combustion engine.
• a core hole can be incorporated into a wall, a floor or a ceiling of a building made of reinforced concrete, not shown.
• the stand frame 51 stands immovably on a ground and by means of a propulsion device, the electric motor 52 can be moved with the tool holder 3 and the core drilling tool 2 in the direction of a longitudinal axis 4 to the ground.
• the drilling tool 1 (FIG. 1) comprises a drill neck 6 designed as a hollow pipe socket 7 and a fastening part 10.
• the drilling tool 1 thus has a front end 15 and a rear end 16.
• At the Bohrstutzen 6 designed as a cutting ring 9 cutting element 8 is fixed and the cutting ring 9 is equipped with diamonds, not shown.
• the cutting ring 9 thus forms the front end 15 of the drilling tool 1 and by means of the cutting ring 9, a core hole is incorporated in the bottom of a building.
• the fastening part 10 comprises a fastening section 11 with a guide region 12 and a locking region 53 (FIG. 1).
• the guide region 12 is subdivided into a first guide region 13 and into a second guide region 14, wherein the first guide region 13 has a smaller outer radius or outer diameter than the second guide region 14.
• On the locking region 53 three locking lugs 23 (FIGS. 1, 4 and 5 ) with a rear one Locking surface 24 and a front locking surface 25 is formed.
• At the rear locking surface 24 designed as a bulge 18 form fit geometry 17 is present.
• the bulge 18 has a first contact surface 19 and a second contact surface 20 (FIG. 3) in the tangential direction.
• the first contact surface 19 is subdivided into an inner contact part surface 21 and into an outer contact part surface 22.
• the inner bearing part surface 21 is aligned substantially parallel to a longitudinal axis 4 and the outer bearing part surface 22 is aligned at an acute angle of substantially 45 ° to the longitudinal axis 4.
• the drill pipe 6 and the guide portion 12 of the fastening part 10 are annular in cross section.
• the tool holder 3 (FIGS. 4 to 7) comprises a sleeve 28 designed as a clamping sleeve 29, a receiving part 26 and a carrier body 26 and an annular ejector 27 and a ring 27.
• the ejector 27 and the receiving part 26 are made of steel the sleeve 28 made of steel.
• the annular ejector 27 is arranged coaxially or concentrically within the sleeve 28 and within the ejector 27, the receiving part 26 is arranged coaxially or concentrically.
• the receiving part 26 which has a substantially annular cross-section, has a small-diameter through-opening 30 at the rear end, and the receiving part 26 pierces the sleeve 28 at this rear end region of the receiving part 26 (FIGS. 5 and 7). Subsequent to the passage opening 30 in the direction of a front end 54 of the receiving part 26, this has a guide opening 31, which is divided into a first and second guide opening 32, 33.
• the second guide opening 33 at the front end 54 of the receiving part 26 in this case has a larger inner radius or inner diameter than the first guide opening 32.
• An ejector spring 41 designed as a spiral spring 42 brings about a pressure force on the ejector 27 in the direction of a front end of the ejector 27 A, designed as a plate spring 44 receiving spring 43 brings on the receiving part 26 a compressive force in the direction of the front end 54 of the receiving part 26 on, ie towards a connection shoulder 34 of the ejector.
• the recesses 36 are limited in the tangential direction by a first counter abutment surface 37 and a second counter abutment surface 38.
• the first counter abutment surface 37 is subdivided in the direction of the longitudinal axis 4 in an analogous manner as the first abutment surface 19 into an outer opposing abutment surface 39 and into an inner opposing abutment surface 40.
• the inner opposing abutment surface 40 is aligned at an acute angle of approximately 45 ° to the longitudinal axis 4 and the outer opposing abutment surface 39 is aligned substantially parallel to the longitudinal axis 4.
• the stop shoulder 34 is positioned as a front axial end of the ejector 27 in the axial direction at a smaller distance to three retaining arms 46 on the sleeve 28 as the front axial end of the receiving part 26.
• the three support arms 46 are formed in a tangential direction at only three sections, so that between the three support arms 46 three portions of the clamping sleeve 29 without the holding arms 26 form.
• the three locking lugs 23 are inserted into the sections between the three retaining arms 46.
• the radial outer extent or the outer diameter of the three locking lugs 23 is slightly smaller than the inner diameter of the sleeve 28, so that the three locking lugs 23 can be inserted within the clamping sleeve 29 and due to the positioning of the three stop shoulders 34 on the ejector 27 are first the bulges 18th with the stop shoulders 34 of the ejector 27 in contact. Subsequently, the ejector 27 by applying a compressive force on the stop shoulders 34 in the axial direction toward a rear end of the receiving part 26 against the pressure applied by the ejector spring 41 on the ejector 27 to move.
• the fastening part 10 is to be rotated by about 60 °, so that the front locking surfaces 25 rest on the support arms 46 and the rear locking surfaces 24 rest on the front end of the receiving part 26.
• the bulges 18 are arranged on the fastening part 10 within the recesses 36 of the receiving part 26 in this rotational angle position.
• locking cam 47 are disposed within axial locking holes 48 on the locking lugs 23.
• an axial compressive force is to be applied to the drilling tool 1 in the direction of a rear end of the receiving part 26, so that the fastening part 10 against the abutment shoulder 34 on the ejector 27 and the rear end of the ejector 27 the fastening part 10 applied pressure force is moved towards a rear end of the ejector 27 and thereby the receiving part 26 and the ejector 27 are moved in the axial direction to the rear, so that thereby the locking cam 47 can be moved out of the locking holes 48 and then a rotary motion
• the fastening part 10 is possible by about 60 °, so that thereby the locking lugs 23 can be moved out of the sleeve 28 from the spaces between the support arms 46 again.
• the rear end of the receiving part 26 is connected to the drilling system 5 with the electric motor 52.
• a compressive force is applied to the inner abutment part surfaces 21 on the bulges 18 of the outer opposite contact surfaces 39 at the recesses 36. Due to the geometry of the bulges 18 and the recesses 36, this compressive force is transmitted essentially exclusively by the inner abutment surfaces 21 and the outer opposing abutment surfaces 39, since contact between the inner abutment surfaces 21 and the outer opposing abutment surfaces 39 substantially eliminates contact between the inner opposing abutment surfaces 40 and the outer bearing part surfaces 22 consists.
• the distance between the first and second opposing abutment surfaces 37, 38 is greater than the distance between the first and second abutment surfaces 19, 20.
• the transmission of torque from the outer abutment surfaces 39 as compressive force on the inner abutment surfaces 21 is thus on the fastening part 10 and thus applied to the drilling tool 1 substantially no axial compressive force, thereby acting on the receiving part 26 no resulting compressive force and thereby the receiving spring 43 has essentially only apply sufficient pressure force on the mounting member 10, so that the locking cam 47 within the locking holes 48 are securely arranged during operation.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Mining & Mineral Resources (AREA)
• Processing Of Stones Or Stones Resemblance Materials (AREA)
• Earth Drilling (AREA)
• Jigs For Machine Tools (AREA)
• Gripping On Spindles (AREA)
• Drilling Tools (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47998403

Family Applications (1)

Country Status (7)

Families Citing this family (8)

Family Cites Families (20)

• 2012
  • 2012-03-21 DE DE201210204491 patent/DE102012204491A1/de not_active Withdrawn
• 2013
  • 2013-03-14 US US14/385,933 patent/US20150104264A1/en not_active Abandoned
  • 2013-03-14 CN CN201380014165.8A patent/CN104203465A/zh active Pending
  • 2013-03-14 JP JP2015500847A patent/JP2015512813A/ja active Pending
  • 2013-03-14 KR KR1020147029319A patent/KR20140139008A/ko not_active Application Discontinuation
  • 2013-03-14 WO PCT/EP2013/055190 patent/WO2013139668A1/de active Application Filing
  • 2013-03-14 EP EP13712505.0A patent/EP2828022A1/de not_active Withdrawn

Non-Patent Citations (1)

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