EP0549821A1 - Procédé pour opérer le pierrage de forages et tête de pierrage pour la mise en oeuvre du procédé - Google Patents

Procédé pour opérer le pierrage de forages et tête de pierrage pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0549821A1
EP0549821A1 EP91122092A EP91122092A EP0549821A1 EP 0549821 A1 EP0549821 A1 EP 0549821A1 EP 91122092 A EP91122092 A EP 91122092A EP 91122092 A EP91122092 A EP 91122092A EP 0549821 A1 EP0549821 A1 EP 0549821A1
Authority
EP
European Patent Office
Prior art keywords
honing
bore
bores
tool
honing tool
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.)
Granted
Application number
EP91122092A
Other languages
German (de)
English (en)
Other versions
EP0549821B1 (fr
Inventor
Joachim Wiederhold
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.)
Maschinenfabrik Gehring GmbH and Co KG
Original Assignee
Maschinenfabrik Gehring GmbH and Co KG
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 Maschinenfabrik Gehring GmbH and Co KG filed Critical Maschinenfabrik Gehring GmbH and Co KG
Priority to EP19910122092 priority Critical patent/EP0549821B1/fr
Priority to DE59105942T priority patent/DE59105942D1/de
Publication of EP0549821A1 publication Critical patent/EP0549821A1/fr
Application granted granted Critical
Publication of EP0549821B1 publication Critical patent/EP0549821B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes

Definitions

  • the invention relates to a method for honing two or more aligned and connected bores within the workpiece according to the preamble of claim 1 and a honing tool for performing the method according to the preamble of claim 8.
  • Aligned holes within a workpiece in particular double holes, which are connected, for example, by a cavity within the workpiece, can be machined in a known manner with a honing tool that has one or more very long honing stones, whereby both holes are honed at the same time, as is the case with single holes is common.
  • a honing tool that has one or more very long honing stones, whereby both holes are honed at the same time, as is the case with single holes is common.
  • the invention has for its object to design the method and the honing tool for machining two or more aligned bores in such a way that very close tolerances with regard to the dimensions and shape can be maintained on all finished bores.
  • the successive machining of the individual bores of double or multiple bores makes it possible to individually adapt the honing process to each of the bores, the simultaneous guidance of the honing tool in another bore providing additional support with an axial distance from the working part of the honing tool, which increases the accuracy of the Gauges of the machined bore contribute significantly.
  • the hole in which the honing tool slides during machining can create a cavity in the workpiece be that connects two successive holes and is designed for example as a hole with a larger width than the holes to be machined.
  • the honing tool is expediently guided during the machining of the one bore in the bore to be machined in the next work step, and in the next work step the finished bore can serve as a guide bore for the honing tool.
  • the same honing tool can be used for this, the stroke position of which is changed after the end of the first working step in accordance with the axial distance between the successive bores.
  • the use of two or - depending on the number of holes - several honing tools is recommended, the respective honing tool intended for one of the holes being machined in another hole, in particular in another honing tool to be machined hole.
  • the honing tool according to the invention has at least one honing stone and at least one guide section on the circumference, which are axially spaced from one another.
  • the guide section is expediently longer than the honing stone. It can be a guide part formed by the tool body, which is provided with a wear-resistant sliding coating; However, a guide bar, which is arranged on the tool body and is made of wear-resistant material, can also be provided as the guide section and is preferably radially adjustable.
  • Fig. 1 shows in the middle part of the drawing schematically in axial section a workpiece 1, which contains aligned bores 2 and 3, have the same diameter and are connected by a cavity 4, which is designed, for example, as a bore which has a larger diameter than that both holes 2 and 3.
  • a single honing tool 5 is provided, which is shown in the left part of the drawing in an upper stroke position and in the right part of the drawing in a lower stroke position - in each case in partial axial section.
  • a honing stone 6 is suitably inserted into a longitudinal slot of the tool body and can be advanced radially outwards against the wall of the bore to be machined by means of a feed rod 7.
  • the delivery bar is for this purpose axially displaceable in a central bore of the honing tool 5 and lies with a wedge surface 8 on a complementary wedge surface of the honing stone 6.
  • the honing stone 6 is arranged about half the length of the honing tool 5. Above and below the honing stone 6 and at an axial distance from it, one of two guide sections 9 and 10 is provided, which are guide parts formed by the tool body 11 and each have a wear-resistant sliding coating 12.
  • the guide sections 9 and 10 each have a greater length than the honing stone 6 and from it an axial distance which is somewhat smaller than the axial distance between the bores 2 and 3 of the workpiece 1.
  • the honing stone 6 is approximately the same length as each of the two Holes 2 and 3.
  • a plurality of honing stones 6 can be arranged in a known manner distributed over the circumference of the tool body 11, wherein a guide bar can also be arranged between two honing stones.
  • a plurality of guide sections 9 and 10 are also expediently distributed over the circumference of the tool body 11.
  • separate guide strips can also be provided, which consist of wear-resistant material, for example of hard metal, hard chrome, plastic or similar materials.
  • Such guide strips like the honing stone 6, can be inserted appropriately in the longitudinal slots of the tool body and can be fed radially outwards, for which purpose an additional feed rod with corresponding wedge surfaces can be provided in a known manner or the feed rod 7 can be designed accordingly.
  • the two holes 2 and 3 are honed in two steps according to the inventive method.
  • the bore 2 is first machined, the honing tool 5 having the stroke position shown in the left part of the drawing.
  • the honing tool is driven as usual with a predetermined stroke alternating up and down and at the same time rotating about its longitudinal axis.
  • the honing tool with its lower guide section 10 or with a plurality of such guide sections, which are arranged distributed over the circumference of the tool body, is slidably guided in the lower bore 3. Since the guide section 10 is longer than the honing stone 6, it is constantly in the bore 3, i.e.
  • the honing stone 6 with the usual overflow namely up to about a third of its length, from the bore 2 extends above and below.
  • the honing tool is therefore constantly supported at an axial distance from its working part, which is formed by the honing stone 6 or more honing stones, during processing. This guidance and support contributes significantly to the shape accuracy of the machined hole. Since the length of the honing stone 6 or more of these honing stones is adapted to the length of the bore 2 to be machined, known correction methods can also be used which counteract shape errors of the machined bore, for example by changing the stroke position.
  • the stroke position of the honing tool 5 is adjusted downward, so that the working part of the honing tool with the honing stone (s) 6 now lies in the lower bore 3, as can be seen from the right part of FIG. 1.
  • the honing process proceeds in the same way as in the first step, the honing tool 5 now being guided and supported with its upper guide section 9 in the finished bore 2.
  • FIG. 2 shows in the left and right part of the drawing two different honing tools 5A and 5B, which are provided for the successive machining of the bores 2 and 3.
  • the workpiece 1 to be machined is shown in the same embodiment as in FIG. 1, that is to say has two bores 2 and 3 of the same diameter connected by a cavity 4.
  • machining with two tools 5A and 5B is intended in particular for honing stepped bores in which the aligned bores therefore have different diameters.
  • the honing tool 5A has one or more honing stones 6a, the length of which corresponds approximately to the length of the bore 2.
  • the honing tool 5B is provided in the same way with one or more honing stones 6b, the length of which is adapted to the length of the bore 3.
  • the honing stones 6a and 6b are each radially adjustable by means of a feed rod 7a or 7b.
  • a guide section 10a below the honing stone 6a which is designed as a guide part formed by the tool body 11a and is provided with a sliding coating 12.
  • a guide section 9a is provided above the honing stone 6b. Both guide sections 9a and 10a are longer than the associated honing stone 6b or 6a. With these honing tools, too, several honing stones and / or several guide sections can be used be distributed over the circumference of the tool body.
  • the guide sections 9a and 10a can, as explained for the exemplary embodiment according to FIG. 1, also be designed as guide strips, which are expediently radially adjustable. The radial feedability in the direction of the associated bore wall enables the respective honing tool to be guided without play, independent of the diameter tolerances of the bores 2 and 3.
  • the double bore 2, 3 is also honed in successive work steps.
  • the honing tool 5A can be used to machine the upper bore 2, so that the guide section 10a is guided in the lower bore 3.
  • the honing tool 5A is exchanged for the honing tool 5B, which now processes the lower bore 3 with the honing stone (s) 6b at approximately the same stroke position, while it is guided in the upper bore 2 and by means of the guide section (s) 9a is supported.
  • the guide sections 9a and 10a are in the working position constantly in the bore 2 and 3, respectively, since they are longer than the associated honing stones.
  • a honing tool can be used which has one or more honing stones of particularly great length, so that, for example in the case of a double hole, the two individual holes can be pre-honed simultaneously.

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP19910122092 1991-12-22 1991-12-22 Procédé pour opérer le pierrage de forages et tête de pierrage pour la mise en oeuvre du procédé Expired - Lifetime EP0549821B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19910122092 EP0549821B1 (fr) 1991-12-22 1991-12-22 Procédé pour opérer le pierrage de forages et tête de pierrage pour la mise en oeuvre du procédé
DE59105942T DE59105942D1 (de) 1991-12-22 1991-12-22 Verfahren zum Honen von Bohrungen und Honwerkzeug zur Durchführung des Verfahrens.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19910122092 EP0549821B1 (fr) 1991-12-22 1991-12-22 Procédé pour opérer le pierrage de forages et tête de pierrage pour la mise en oeuvre du procédé

Publications (2)

Publication Number Publication Date
EP0549821A1 true EP0549821A1 (fr) 1993-07-07
EP0549821B1 EP0549821B1 (fr) 1995-07-05

Family

ID=8207469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910122092 Expired - Lifetime EP0549821B1 (fr) 1991-12-22 1991-12-22 Procédé pour opérer le pierrage de forages et tête de pierrage pour la mise en oeuvre du procédé

Country Status (2)

Country Link
EP (1) EP0549821B1 (fr)
DE (1) DE59105942D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439381A1 (de) * 1994-11-04 1996-05-09 Nagel Masch Werkzeug Honwerkzeug
WO2019068462A1 (fr) * 2017-10-02 2019-04-11 Gehring Technologies Gmbh Procédé permettant le rodage d'un stator et machine pour mettre en œuvre le procédé

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7621327B2 (en) 2007-10-31 2009-11-24 Baker Hughes Incorporated Downhole seal bore repair device
DE102011087074B4 (de) * 2011-11-25 2024-05-08 Bayerische Motoren Werke Aktiengesellschaft Honwerkzeug und Verfahren zum Honen mit dem Honwerkzeug
DE102013223293A1 (de) 2013-11-15 2015-05-21 Gehring Technologies Gmbh Honwerkzeug und Verfahren zum Bearbeiten mehrerer koaxialer Bohrungen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2627886A1 (de) * 1976-06-22 1978-01-05 Volkswagenwerk Ag Verfahren zum herstellen von bohrungen hoher oberflaechenguete

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2627886A1 (de) * 1976-06-22 1978-01-05 Volkswagenwerk Ag Verfahren zum herstellen von bohrungen hoher oberflaechenguete

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 5, no. 39 (M-59)(711) 14. März 1981 & JP-A-55 164 471 ( TOKYO SHIBAURA DENKI K. K. ) 22. Dezember 1980 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439381A1 (de) * 1994-11-04 1996-05-09 Nagel Masch Werkzeug Honwerkzeug
WO2019068462A1 (fr) * 2017-10-02 2019-04-11 Gehring Technologies Gmbh Procédé permettant le rodage d'un stator et machine pour mettre en œuvre le procédé

Also Published As

Publication number Publication date
EP0549821B1 (fr) 1995-07-05
DE59105942D1 (de) 1995-08-10

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