US20060157284A1 - Method and device for the production of bores - Google Patents

Method and device for the production of bores Download PDF

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Publication number
US20060157284A1
US20060157284A1 US11/314,326 US31432605A US2006157284A1 US 20060157284 A1 US20060157284 A1 US 20060157284A1 US 31432605 A US31432605 A US 31432605A US 2006157284 A1 US2006157284 A1 US 2006157284A1
Authority
US
United States
Prior art keywords
tool
cutting means
bore
shank
cutting
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.)
Abandoned
Application number
US11/314,326
Other languages
English (en)
Inventor
Rainer Warnicki
Andreas Peisert
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.)
C&E Fein GmbH and Co
Original Assignee
C&E Fein GmbH and Co
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 C&E Fein GmbH and Co filed Critical C&E Fein GmbH and Co
Assigned to C. & E. FEIN GMBH reassignment C. & E. FEIN GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PEISERT, ANDREAS, WARNICKI, RAINER
Publication of US20060157284A1 publication Critical patent/US20060157284A1/en
Priority to US12/987,634 priority Critical patent/US8100197B2/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/0018—Drills for enlarging a hole
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/0072—Drills for making non-circular holes
    • 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
    • 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
    • Y10T408/03—Processes

Definitions

  • the invention relates to a tool for the production of specially shaped bores, such as non-round bores and bores with an undercut, furthermore to a tool kit for the production of such bores, to a method for the production of bores and to a device the production of bores.
  • Drilling typically involves working into solid material or else making a core-hole bore by means of a drill bit.
  • the bore made has an approximately cylindrical shape.
  • first bore portion Production of a first bore portion by means of an oscillatingly driven tool, the first bore portion having a shape deviating from a cylinder and having at least one projection projecting from the wall surface of the first bore portion towards the bore centre.
  • step (a) with the aid of an oscillatingly driven tool a first bore portion is produced, which has a shape deviating from a cylinder and has projections projecting from the wall face of the first bore portion towards the bore centre.
  • step (a) is followed by a second step (b), in which an at least partial rotation of the tool about its longitudinal axis takes place, in order to produce a second bore portion which has a larger cross section than the first bore portion.
  • an enlarged bore portion is then produced in the bore region adjoining the first bore portion and has a larger cross section than the first bore portion.
  • the second bore portion has, as a rule, an approximately cylindrical shape. This gives rise, at the transition between the first and the second bore portion, to one or more undercuts, the shape of which is dependent on the shape of the tool used.
  • step (b) the tool is rotated by hand or is driven in rotation or intermittently with a preferred direction.
  • the desired enlargement of the drillhole in the region of the second bore portion can gradually be produced in a simple way.
  • a pre-bore is first made before step (a).
  • a pre-bore is made during step (a).
  • the object of the invention is achieved by means of a tool with a shank which has a first end and a second end, the first end being designed for chucking on an oscillatory drive, and there being provided at the second end a cutting head with at least one projection which projects with respect to the shank in the radial direction and is provided with cutting means.
  • a first bore portion can be produced in the way described above, which has a shape deviating from a cylinder and possesses at least one projection projecting from the wall face of the first bore portion towards the bore centre.
  • the tool in a second work step, when the first bore portion has reached a sufficient depth, the tool can be rotated about its longitudinal axis in order to produce the second bore portion which has a larger cross section than the first bore portion.
  • the cutting head of the tool has at least two, preferably three, projections which are preferably arranged at equal angular intervals in relation to one another, depressions being formed between adjacent projections.
  • abrasive cutting means and/or cutting teeth are provided on at least one projection of the cutting head.
  • cutting means may also be provided on at least one end face.
  • the cutting means may comprise diamond cutting means, boron carbide cutting means, corundum cutting means or the like.
  • At least one outer surface of a projection has a design approximately in the form of an arc of a circle.
  • the tool has a drill attachment.
  • This is preferably aligned with a longitudinal axis of the shank.
  • both a pre-bore for guiding the tool can be made and at the same time the oscillating cut-drilling operation can be carried out by means of the cutting head.
  • At least the cutting means or the drilling attachment are designed for rock drilling or for drilling into wood.
  • a suitable binding of the cutting means by means of a metallic layer or a plastic layer may be provided.
  • kits for the production of a bore with an undercut comprising a tool of the type described above and a drill adapted to this.
  • a pre-bore can be made and subsequently, in a further work step, the bore with an undercut can be made.
  • the object of the invention is achieved, furthermore, by means of an oscillatory drive with an oscillatory device, by means of which a drive shaft can be oscillationly driven to-and-fro about its longitudinal axis, furthermore a tool of the type described above being coupled to the drive shaft.
  • the oscillatory drive comprises means for the generation of angular momentums.
  • an improved propulsion can be achieved both during the production of the first bore portion and during the production of the second bore portion.
  • the oscillatory device can be changed over between a to-and-fro oscillation about a longitudinal axis of the drive shaft and an oscillation with angular momentums in a preferred direction of rotation.
  • both the first bore portion and the second bore portion having the enlarged bore cross section can be produced in an especially simple and advantageous way.
  • FIG. 1 shows a first version of a tool according to the invention in a perspective illustration
  • FIG. 2 shows a diagrammatic illustration of a bore shape produced according to the invention
  • FIG. 3 shows a side view of a further embodiment of a tool according to the invention.
  • FIG. 4 shows a partially sectional side view of an oscillatory drive which can be used advantageously with the tool according to the invention.
  • a tool according to the invention is designated as a whole by the numeral 10 in FIG. 1 .
  • the tool 10 comprises a cylindrical shank 12 with a first end 14 and with a second end 16 .
  • the tool 10 can be chucked with its first end 14 into a clamping chuck of an oscillatory drive (cf. FIG. 4 ).
  • a cutting head 13 which has three outwardly projecting projections 22 , 24 , 26 which are offset at uniform angular intervals of 120° in relation to one another.
  • a depression 28 , 30 , 32 which has a concave shape, is formed in each case between adjacent projections 22 , 24 , 26 .
  • the projections 22 , 24 , 26 have a design approximately in the form of an arc of a circle on their surfaces 34 , 36 , 38 facing away from the shank 12 and are provided with cutting means in the form of abrasive diamond grains which are held in a suitable way, preferably by means of a metallic layer, on the surface curved in each case.
  • that end face 47 of the cutting head 13 which faces away from the shank 12 is also provided with suitable cutting means.
  • These, too, may again be, for example, abrasive diamond grains which are bound in a suitable way.
  • any other desired cutting means may also be provided, and that even cutting teeth or otherwise shaped cutting elements may be attached to the cutting head.
  • the tool when fastened with its first end 14 to an oscillatory drive, can be driven to and fro in oscillation about its longitudinal axis 18 .
  • the oscillating movement takes place preferably at a high frequency of between about 5,000 and 25,000 oscillations per minute and with a small pivot angle of between about 0.5 and 5°.
  • a first bore portion for example in brickwork, can be produced, the shape of which corresponds essentially to the shape of the cutting head 13 as a result of the oscillations having a small pivot angle.
  • a first bore portion 42 can be produced, which has a surface deviating from a cylindrical shape, and, between cylindrical part-faces, the shape of which corresponds approximately to the shape of the projections 22 , 24 , 26 of the tool 10 , again corresponding projections are produced which correspond approximately to the negative shape of the depressions 28 , 30 , 32 of the tool 10 .
  • the entire machine can be rotated gradually about the longitudinal axis 18 .
  • the negative shape, predetermined by the preceding oscillation step, of the cutting head 13 is gradually enlarged into a cylindrical bore portion which is indicated in FIG. 2 by dashes as the second bore portion 44 .
  • This results, in the second bore portion 44 in an enlargement of the cross section of the bore to a fully cylindrical shape, in so far as a rotation of at least 360° is implemented.
  • a bore 40 is produced which has a first bore portion 42 and a second bore portion 44 , undercuts 46 being obtained at the transition between the first bore portion 42 and the second bore portion 44 .
  • FIG. 3 an alternative version of a tool according to the invention is illustrated in a side view and is designated as a whole by the numeral 10 ′.
  • the tool 10 ′ has a shank 12 and a cutting head 13 at its second end.
  • a drill attachment 48 is provided, which is aligned with the longitudinal axis 18 of the shank 12 .
  • the drill attachment 48 which may be designed, for example, as a rock drill, makes it possible, in one operation with the tool 10 ′, first to make a pre-bore and simultaneously, after a specific depth is reached, to carry out the oscillation operation in order to produce the first bore portion.
  • the tool 1 ′ is centred at the bore produced by the drill attachment 48 and therefore cannot creep out sideways.
  • a centring attachment will be provided preferably on that side of the cutting head 13 which faces away from the shank 12 , so that the tool can be guided by means of the centring attachment at the bore which was previously made.
  • the cutting head must have at least one projection which projects radially outwards with respect to the shank, so that, when the first bore portion is being produced, a bore shape deviating from a cylinder is produced by means of oscillation assistance.
  • FIG. 4 An oscillatory drive, which may advantageously be used in conjunction with the tool according to the invention, is illustrated in FIG. 4 and is designated as a whole by the numeral 50 .
  • a drive the output shaft of which executes an intermittent rotational movement, can be coupled to a drive shaft for a tool via an overrunning clutch.
  • the intermittent rotational movement is thereby converted into a momentum-like rotational movement with a preferred direction of rotation.
  • the overrunning clutch may be set up so that the oscillatory drive 50 has two operating modes, to be precise a first operating mode, in which the tool chucked in it is set in a to-and-fro rotational oscillation movement about its longitudinal axis, and a second operating mode, in which the tool is driven with angular momentums in a preferred direction of rotation.
  • the oscillatory drive 50 illustrated in FIG. 4 has a housing 52 which receives an electric motor 54 .
  • the motor shaft 56 of the electric motor 54 drives an oscillatory device 58 which, for example, has a pivoting fork cooperating with an eccentric.
  • the oscillatory device 58 By means of the oscillatory device 58 , the rotational movement of the motor shaft 56 is converted into a rotational pivoting movement of a shaft 60 .
  • the shaft 60 drives a freewheel 62 .
  • the latter is connected on the output side to a drive shaft 66 , on which is provided a tool-holding fixture 64 , for example a clamping chuck, for receiving a tool 10 or 10 ′.
  • the freewheel 62 can be changed over between rigid punching drive and overrun action.
  • the oscillating movement of the shaft 60 is transmitted directly to the drive shaft 66 .
  • This operating mode makes it possible to produce the first bore portion 42 by means of the rotational movement oscillating to and fro.
  • the freewheel 62 is changed over, so that the oscillating movement of the shaft 60 is converted into angular momentums with a preferred direction (right-handed rotation or left-handed rotation).
  • the second bore portion can thus be produced in an especially simple way with the aid of the oscillatory drive 50 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US11/314,326 2004-12-21 2005-12-21 Method and device for the production of bores Abandoned US20060157284A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/987,634 US8100197B2 (en) 2004-12-21 2011-01-10 Method and device for the production of bores

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004062858A DE102004062858A1 (de) 2004-12-21 2004-12-21 Verfahren und Vorrichtung zur Herstellung von Bohrungen
DE102004062858.0 2004-12-21

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/987,634 Division US8100197B2 (en) 2004-12-21 2011-01-10 Method and device for the production of bores

Publications (1)

Publication Number Publication Date
US20060157284A1 true US20060157284A1 (en) 2006-07-20

Family

ID=35659023

Family Applications (2)

Application Number Title Priority Date Filing Date
US11/314,326 Abandoned US20060157284A1 (en) 2004-12-21 2005-12-21 Method and device for the production of bores
US12/987,634 Active US8100197B2 (en) 2004-12-21 2011-01-10 Method and device for the production of bores

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/987,634 Active US8100197B2 (en) 2004-12-21 2011-01-10 Method and device for the production of bores

Country Status (8)

Country Link
US (2) US20060157284A1 (zh)
EP (1) EP1674181B1 (zh)
JP (1) JP4602239B2 (zh)
CN (1) CN1792530B (zh)
AT (1) ATE418411T1 (zh)
DE (2) DE102004062858A1 (zh)
ES (1) ES2317131T3 (zh)
PL (1) PL1674181T3 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110072946A1 (en) * 2009-09-29 2011-03-31 Credo Technology Corporation Accessory attachment system for an oscillating power tool

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008061271A1 (de) * 2008-12-10 2010-06-24 Emag Holding Gmbh Vorrichtung zum Schleifen von Nocken einer Nockenwelle
US9217287B2 (en) * 2011-08-02 2015-12-22 Halliburton Energy Services, Inc. Systems and methods for drilling boreholes with noncircular or variable cross-sections
DE102014101827A1 (de) 2014-02-13 2015-08-13 C. & E. Fein Gmbh Bohrmaschine und Bohrwerkzeug hierfür
EP3085311B1 (en) * 2015-04-21 2018-12-26 Oticon Medical A/S Indicator for installing a medical device

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* Cited by examiner, † Cited by third party
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US1425402A (en) * 1920-06-30 1922-08-08 Mackenzie Philip Combined drill and valve grinder
US4083351A (en) * 1977-01-21 1978-04-11 Harold Jack Greenspan Fluted diamond drill
US5441450A (en) * 1993-05-05 1995-08-15 C.&E. Fein Gmbh & Co. Power tool having means to switch from oscillatory movement to rotary movement
US5747953A (en) * 1996-03-29 1998-05-05 Stryker Corporation Cordless, battery operated surical tool
US5868208A (en) * 1993-12-29 1999-02-09 Peisert; Andreas Power tool
US20040156689A1 (en) * 2003-02-07 2004-08-12 Shen Shui Liang Drill bit
US20090050343A1 (en) * 2007-08-22 2009-02-26 Smith Ronald D Process and apparatus for drilling holes in soft materials.

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1425402A (en) * 1920-06-30 1922-08-08 Mackenzie Philip Combined drill and valve grinder
US4083351A (en) * 1977-01-21 1978-04-11 Harold Jack Greenspan Fluted diamond drill
US5441450A (en) * 1993-05-05 1995-08-15 C.&E. Fein Gmbh & Co. Power tool having means to switch from oscillatory movement to rotary movement
US5868208A (en) * 1993-12-29 1999-02-09 Peisert; Andreas Power tool
US5747953A (en) * 1996-03-29 1998-05-05 Stryker Corporation Cordless, battery operated surical tool
US20040156689A1 (en) * 2003-02-07 2004-08-12 Shen Shui Liang Drill bit
US20090050343A1 (en) * 2007-08-22 2009-02-26 Smith Ronald D Process and apparatus for drilling holes in soft materials.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110072946A1 (en) * 2009-09-29 2011-03-31 Credo Technology Corporation Accessory attachment system for an oscillating power tool
US8365419B2 (en) * 2009-09-29 2013-02-05 Robert Bosch Gmbh Accessory attachment system for an oscillating power tool
US9248562B2 (en) 2009-09-29 2016-02-02 Robert Bosch Gmbh Accessory attachment system for an oscillating power tool

Also Published As

Publication number Publication date
CN1792530B (zh) 2011-11-09
US20110110738A1 (en) 2011-05-12
PL1674181T3 (pl) 2009-06-30
EP1674181B1 (de) 2008-12-24
DE502005006316D1 (de) 2009-02-05
JP2006175593A (ja) 2006-07-06
US8100197B2 (en) 2012-01-24
JP4602239B2 (ja) 2010-12-22
EP1674181A2 (de) 2006-06-28
DE102004062858A1 (de) 2006-08-10
EP1674181A3 (de) 2006-08-09
ATE418411T1 (de) 2009-01-15
CN1792530A (zh) 2006-06-28
ES2317131T3 (es) 2009-04-16

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Legal Events

Date Code Title Description
AS Assignment

Owner name: C. & E. FEIN GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WARNICKI, RAINER;PEISERT, ANDREAS;REEL/FRAME:017389/0070

Effective date: 20060120

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION