WO2002043907A1 - Machine permettant de percer de longs trous dans des pieces - Google Patents

Machine permettant de percer de longs trous dans des pieces Download PDF

Info

Publication number
WO2002043907A1
WO2002043907A1 PCT/SE2001/002115 SE0102115W WO0243907A1 WO 2002043907 A1 WO2002043907 A1 WO 2002043907A1 SE 0102115 W SE0102115 W SE 0102115W WO 0243907 A1 WO0243907 A1 WO 0243907A1
Authority
WO
WIPO (PCT)
Prior art keywords
machine
bore
spindle
support frame
boring
Prior art date
Application number
PCT/SE2001/002115
Other languages
English (en)
Inventor
Lars Kallio
Original Assignee
Euromation Ab
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 Euromation Ab filed Critical Euromation Ab
Priority to AU2001292491A priority Critical patent/AU2001292491A1/en
Priority to EP01972853A priority patent/EP1347855A1/fr
Publication of WO2002043907A1 publication Critical patent/WO2002043907A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0053—Devices for removing chips using the gravity force

Definitions

  • the present invention relates to a machine for boring elongate holes in work pieces, comprising a support frame with at least one bore spindle, which is rotatable by means of drive members, and a feed device which can move substantially parallel to the longitudinal axis of the bore spindle.
  • BACKGROUND TO THE INVENTION Machines in accordance with the above are used, for example, to bore channels and bearing points in engine blocks and/or cylinder heads in the manufacture of internal combustion engines.
  • the tolerance demands are high, and it is desirable to reduce the numbers rejected because said work pieces are labor-intensive and are expensive to produce.
  • Machines of this type are used, for example, to bore camshaft bearings in the cylinder heads of automobile diesel engines.
  • the production rate in these situations is relatively high with a cycle time of ca. 1 to 2 minutes and a bore length of ca. 800 to 1000 millimeters .
  • the guide track can be adjusted and oriented in relation to the bore spindle when the machine is shut off, i.e. cold.
  • the bore spindle working in a reciprocating movement along the guide track conveys the heat farther outward in the guide track. This results in an uneven deformation of the machine, which has a negative influence of the quality of the machining.
  • Normal clearances in the guide track and in the bearing of the bore spindle also have a negative influence on the quality of the machining, and the effect of a directional error is amplified by the lever arm created in the case of a long bore spindle.
  • the cabling which runs between the machine support frame and the drive motor of the bore spindle forms an antenna whose radiation characteristics vary depending on the movement of the bore spindle along the guide track.
  • the object of the present invention is to make available a machine for boring elongate holes in work pieces, which machine avoids the problems described above.
  • the invention is characterized in that the feed device is designed to receive the work piece, and in that the bore spindle is mounted securely in the support frame.
  • Fig. 1 is a perspective view which shows, in schematic representation, a machine configured according to a first illustrative embodiment of the invention.
  • Fig. 2 is a perspective view showing a machine configured according to a second illustrative embodiment of the invention.
  • the machine shown in Fig. 1 is used for horizontal boring of elongate holes, for example for boring oil channels in a cylinder head, and comprises a support 10 which bears a first electric motor 11 used for driving a feed screw 12.
  • the thread of the screw engages with a nut element 13 which is connected to a holder 14 for a work piece 15.
  • the holder 14 forms a feed device which rests on, and is guided on, guide track rails 16.
  • the work piece 15 is held securely on the holder 14 by means of coupling members 17 of the quick-coupling type, for example pneumatically controlled.
  • the working pressure to these coupling members is conveyed via supply cables 18.
  • the support 10 also bears a second electric motor 19 which is connected via a transmission 20 to a bore head which has a pair of bore spindles 21, the free end of which receives a boring bit 22.
  • the longitudinal axis of the bore spindle is parallel to the guide track rails 16.
  • the length of the bore spindle and the feed movement of the holder 14 are adapted to the desired feed depth.
  • a steady rest 23 on the holder 14 is used as a support bearing for the free end of the bore spindle before boring is started.
  • Fig. 2 shows a second illustrative embodiment of the invention in which the boring is carried out vertically, i.e. the spindle with cutting head is vertically suspended and the work piece is moved vertically.
  • the intrinsic weight affords advantageous freedom from clearance in feeding.
  • the steady rest 23 is not loaded by the weight in this embodiment of the invention.
  • chips from the machining work can fall downward and be washed away. Since the bearings of the bore spindle can be dimensioned for lesser stresses, two parallel bore spindles can also be placed nearer each other, i.e. with a smaller center-to-center distance than in conventional machines. The reduced clearance makes it possible to bore elongate holes with very high precision.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

L'invention concerne une machine permettant de percer de longs trous dans des pièces (15). La machine comprend un cadre-support (10) avec au moins un arbre de perçage (21) qui est entraîné en rotation à l'aide d'un organe de commande (19), et un dispositif d'alimentation (12-14, 16) conçu pour recevoir les pièces (15) et mobile sensiblement parallèlement à l'axe longitudinal de l'arbre de perçage. L'arbre de perçage (21) est monté solidement dans le cadre-support (10).
PCT/SE2001/002115 2000-11-29 2001-09-28 Machine permettant de percer de longs trous dans des pieces WO2002043907A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001292491A AU2001292491A1 (en) 2000-11-29 2001-09-28 Machine for boring elongated holes in work pieces
EP01972853A EP1347855A1 (fr) 2000-11-29 2001-09-28 Machine permettant de percer de longs trous dans des pieces

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0004407A SE516158C2 (sv) 2000-11-29 2000-11-29 Maskin för borrning av långsträckta hål i arbetsstycken
SE0004407-3 2000-11-29

Publications (1)

Publication Number Publication Date
WO2002043907A1 true WO2002043907A1 (fr) 2002-06-06

Family

ID=20282034

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/002115 WO2002043907A1 (fr) 2000-11-29 2001-09-28 Machine permettant de percer de longs trous dans des pieces

Country Status (4)

Country Link
EP (1) EP1347855A1 (fr)
AU (1) AU2001292491A1 (fr)
SE (1) SE516158C2 (fr)
WO (1) WO2002043907A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405266A (en) * 1979-09-05 1983-09-20 Wilhelm Hegenscheidt Gesellshaft Mbh Deep drilling machine
EP0301226A1 (fr) * 1987-07-29 1989-02-01 H. Wohlenberg KG GmbH & Co. Outil pour l'usinage intérieur abaissé de pièces à usiner creuses
JPH08168908A (ja) * 1994-12-16 1996-07-02 Hosoi Kosakusho:Kk 深穴加工のための切削液供給装置および方法
DE19705240A1 (de) * 1997-02-12 1998-09-10 Nagel Masch Werkzeug Tiefbohreinrichtung, Verfahren zu ihrem Betrieb und Verwendung eines Reitstockes bei einer Tiefbohreinrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405266A (en) * 1979-09-05 1983-09-20 Wilhelm Hegenscheidt Gesellshaft Mbh Deep drilling machine
EP0301226A1 (fr) * 1987-07-29 1989-02-01 H. Wohlenberg KG GmbH & Co. Outil pour l'usinage intérieur abaissé de pièces à usiner creuses
JPH08168908A (ja) * 1994-12-16 1996-07-02 Hosoi Kosakusho:Kk 深穴加工のための切削液供給装置および方法
DE19705240A1 (de) * 1997-02-12 1998-09-10 Nagel Masch Werkzeug Tiefbohreinrichtung, Verfahren zu ihrem Betrieb und Verwendung eines Reitstockes bei einer Tiefbohreinrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199636, Derwent World Patents Index; AN 1996-357677, XP002966232 *

Also Published As

Publication number Publication date
SE0004407L (sv) 2001-11-26
SE516158C2 (sv) 2001-11-26
EP1347855A1 (fr) 2003-10-01
SE0004407D0 (sv) 2000-11-29
AU2001292491A1 (en) 2002-06-11

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