EP0237790B1 - Honeinrichtung - Google Patents

Honeinrichtung Download PDF

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Publication number
EP0237790B1
EP0237790B1 EP87101972A EP87101972A EP0237790B1 EP 0237790 B1 EP0237790 B1 EP 0237790B1 EP 87101972 A EP87101972 A EP 87101972A EP 87101972 A EP87101972 A EP 87101972A EP 0237790 B1 EP0237790 B1 EP 0237790B1
Authority
EP
European Patent Office
Prior art keywords
coolant
guide part
honing
bores
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.)
Expired - Lifetime
Application number
EP87101972A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0237790A1 (de
Inventor
Walter Dipl.-Ing. Lang (Fh)
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
Publication of EP0237790A1 publication Critical patent/EP0237790A1/de
Application granted granted Critical
Publication of EP0237790B1 publication Critical patent/EP0237790B1/de
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
    • B24B33/10—Accessories
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant

Definitions

  • the invention relates to a honing device according to the preamble of claim 1.
  • coolant is specifically supplied to the working area of the honing tool via an axially extending coolant channel.
  • a coolant chamber is arranged above a guide part of the tool shank, from which coolant flows into the coolant channel via bores arranged in the shank.
  • the invention has for its object to provide a honing device for precision machining with which relatively small bores, in particular blind holes, can be machined with avoidance of misalignments and vibrations of the honing tool with exceptionally high accuracy and a long service life of the tool.
  • the floating mounting of the tool shank enables precise alignment between the honing tool and the workpiece while avoiding misalignment.
  • pressurized coolant flows into the coolant chamber and acts on the flange-like section of the guide part and an arranged sealing part, which are then pressed against corresponding sealing surfaces fixed to the housing and axially seal the coolant chamber.
  • the guide part like the sealing part, is also fixed to the housing, so that the honing tool is supported in the guide part until just above the working area, as a result of which vibrations during machining are largely excluded.
  • Blind holes can also be machined with high precision using the honing device according to the invention, which is particularly important when machining bores on injection pump parts.
  • the axial coolant channel opens out at the end of the honing tool facing the workpiece, and at least one return channel is provided for returning the coolant in the outer circumference of the honing tool, especially in blind holes, due to the high coolant pressure, the abrasion quickly emerges from the working zone Honing stones washed away, which further increases the machining accuracy.
  • a workpiece 1 is shown with a blind hole 2, which is processed by a honing tool 3 of a honing device.
  • the workpiece 1 is received and held (which is not shown in more detail) in a known cardanic workpiece holder 4.
  • a coolant supply device 5 is arranged on a device plate 6 which is fixed on the machine side such that it is penetrated centrally by a shaft 35 (FIG. 2) of the honing tool 3.
  • a clamping end 8 of the honing tool 3 opposite the workpiece receptacle 4 of the honing tool 3 and arranged on the other side of the coolant supply device 5 can be secured by known means, e.g. a (not shown) collet, firmly connected to a machine spindle 9.
  • the housing part 10 coaxially receives in a cylinder bore 13 a guide part 14 with an outer diameter and an annular sealing part 15 adjoining the guide part in the axial direction.
  • the guide part 14 has a flange-like widened central section 16, the outer diameter of which is slightly smaller than the diameter of the cylinder bore 13 of the housing part 10.
  • the guide part 14 lies with a lower end face 17 against a bottom 18 of the housing part 10 formed by a step-like shoulder.
  • a section 19 with a reduced diameter adjoins the center section 16 and projects through a bottom-side bore 20 of the housing part 10 to the outside.
  • the bore 20 has a smaller internal width than the adjoining cylinder bore 13.
  • the tapered section 19 of the guide part 14 projects through the bore 20 with greater play.
  • An end section 21 adjoins the central section 16 at the top. Its outer diameter is substantially smaller than the inside width of the cylinder bore 13, but slightly larger than the outer diameter of the end section 19. Between the wall of the cylinder bore 13 and the outside of the end section 21, an annular chamber 22 for receiving coolant is formed.
  • the annular chamber 22 is bounded in the direction of the machine spindle 9 by the sealing part 15, which rests with a flange-like, widened section 23 without play against the end face 21 a of the end section 21.
  • the outside diameter of the section 23 is somewhat smaller than the inside diameter of the cylinder bore 13. It is closed in the direction of the machine spindle 9 with a cover 24 which is fastened to a shoulder 10a of an enlarged bore section 25 of the housing part 10 which adjoins the cylinder bore 13 .
  • the conditions are such that the guide part 14 and the sealing part 15 are axially immovable, but are kept floating in the radial direction within the cylinder bore 13.
  • the cover 24 has a through bore 47 which runs coaxially to the cylinder bore 13 and through which an end portion 26 of the sealing part 15 which is tapered in diameter is penetrated with greater play.
  • the guide part 14 and the sealing part 15 have concentric through bores 27 and 28, respectively, which are penetrated by the tool shank 35 with little play and have a guiding and sealing function, as will be explained below.
  • the bore 27 widens in the area of the end section 21 of the guide part 14 and forms a distributor chamber 29 which surrounds the honing tool shaft 35 in this area and serves for the coolant supply in conductive connection.
  • three sets of bores 30 are provided, each having the same axial distance from one another.
  • the bores 30 of a set preferably have the same circumferential distance from one another.
  • the annular chamber 22 is connected via a connection bore 31 and a line 32 to a coolant pressure source (not shown).
  • a coolant pressure source not shown
  • diametrically opposite radial bores 33 are provided on the honing tool shaft 35, which lead to coolant channels 34 in the interior of the honing tool.
  • the bores 33 are preferably arranged at the same circumferential distance from one another in accordance with the bores 30.
  • the tool shaft 35 is provided with an axial through bore 36 in which a spreader rod 37 is guided.
  • a spreader rod 37 In the work area 7 of the tool shank 35, four slot-like slots 38 are preferably provided, each receiving a honing stone 39 with an abrasive coating.
  • the honing stones 39 are dimensioned and shaped such that they can be moved radially in the slots 38 with very little play.
  • the honing stones have an inner wedge surface 40 which runs in the longitudinal direction and which interacts with the conical section 41 of the expansion rod 37.
  • the spreader rod 37 also has grooves 34 which begin slightly above the bores 33 of the tool shank 35 and extend to the section 41 46 of the tool shank 35 flows.
  • the grooves 34 as shown in FIG. 3, are preferably rounded in the form of a part circle.
  • a plurality of flattened portions 42 which are arranged with the same circumferential spacing and are axially extending, are preferably provided.
  • axially extending grooves 43 are also preferably provided with the same circumferential spacing from one another and are used to discharge the coolant from the working area.
  • the grooves 43 are so long that they extend in the lower stroke end position of the honing tool from the lower end 46 of the honing tool 3 to slightly above a workpiece upper edge 1 a (FIG. 1).
  • the flats 42 and the grooves 43 form return channels and are arranged such that guide webs 44 are provided between them, which are formed by outer surface portions of the tool shank 35.
  • the grooves 43 are rounded in the shape of a partial circle in cross section (FIG. 3).
  • the honing tool 3 is at least partially made of a particularly wear-resistant material. It is preferably made of solid carbide.
  • the machine spindle 9 Before the honing process begins, the machine spindle 9 is in its upper end position, the honing tool 3 with its honing stones 39 being located completely within the bore 27 of the guide part 14 (not shown).
  • the coolant supply device 5 is also held in its upper end position with its housing part 10 by a known lifting device, not shown, within the guide bushing 11 (see dash-dotted lines in FIG. 1). In this position, the workpiece holder 4 with the workpiece 1 can be freely moved in the horizontal direction below the coolant supply device 5, for example to enable the workpieces 1 to be fed in and out by means of a rotary indexing table.
  • the coolant supply device 5 is lowered to such an extent that the end section 19 of the guide part 14 reaches close to the upper edge of the workpiece 1 a and the honing tool 3 is then with its honing stones 39 from the machine spindle 9 into the blind hole 2 retracted.
  • the gimbaled workpiece 1 is aligned with the honing tool 3 rigidly clamped in the machine spindle 9 (FIG. 1).
  • the honing stone feed and the rotating and lifting movement of the honing tool are then switched on and at the same time coolant is supplied via the line 32.
  • the coolant preferably under a pressure of approximately 20 to 30 bar, enters the annular chamber 22 and presses the guide part 14 with its end face 17 against the bottom 18 of the cylinder bore 13.
  • the sealing part 15 is pressed with its flange section 23 against the cover 24 .
  • the coolant passes through the bores 30 into the distribution chamber 29 and flows around the tool shank 35, the tight play between the tool shank and the bore 28 of the sealing part 15 and the bore 27 of the guide part 14, in conjunction with the high coolant pressure, a hydrostatic guiding and sealing effect on the moving honing tool 3.
  • the coolant passes through the further radial bores 33 into the interior of the honing tool 3 and flows within the bore 36 in the axially extending grooves 34 of the spreader rod 37 to the end 46 of the honing tool 3 .
  • the coolant then flows out of the blind hole 2 via the flats 42 machined on the outer circumference of the honing tool 3 and the grooves 43.
  • the entire working area of the blind hole 2 is flushed through and good cooling and a reliable removal of the abrasion particles are ensured.
  • the high coolant pressure in connection with the special storage and arrangement of the coolant supply device leads to a vibration-damping stiffening of the system of honing tool and workpiece, which contributes to exceptional machining accuracy and a considerable increase in tool life.
  • the honing stones 39 are immediately taken up again by the bore 27 of the guide part 14 and held captively.
  • the mouth of the bore 27 facing the workpiece 1 has a funnel-shaped extension 45, which facilitates the insertion of the honing stones 39.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP87101972A 1986-03-07 1987-02-12 Honeinrichtung Expired - Lifetime EP0237790B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863607580 DE3607580A1 (de) 1986-03-07 1986-03-07 Honeinrichtung
DE3607580 1986-03-07

Publications (2)

Publication Number Publication Date
EP0237790A1 EP0237790A1 (de) 1987-09-23
EP0237790B1 true EP0237790B1 (de) 1990-08-08

Family

ID=6295783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101972A Expired - Lifetime EP0237790B1 (de) 1986-03-07 1987-02-12 Honeinrichtung

Country Status (4)

Country Link
US (1) US4765096A (es)
EP (1) EP0237790B1 (es)
DE (2) DE3607580A1 (es)
ES (1) ES2016287B3 (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8806552U1 (es) * 1988-05-19 1988-08-11 Kadia Maschinenbau Kopp Gmbh & Co, 7440 Nuertingen, De
DE4214505A1 (de) * 1992-05-01 1993-11-04 Nagel Masch Werkzeug Verfahren und vorrichtung zur honbearbeitung von werkstuecken
DE4303526C2 (de) * 1993-02-06 1997-04-17 Nagel Masch Werkzeug Verfahren und Vorrichtung zur Honbearbeitung von Werkstücken
EP0794036B1 (de) * 1996-03-07 2000-05-10 Messer Griesheim Gmbh Maschine zum Polieren und/oder Schleifen
JP3192396B2 (ja) * 1997-11-07 2001-07-23 日本ピラー工業株式会社 流体用ロータリジョイント
US6142858A (en) 1997-11-10 2000-11-07 3M Innovative Properties Company Backup pad for abrasive articles
US6095910A (en) * 1997-11-10 2000-08-01 3M Innovative Properties Company Surface treatment article having a quick release fastener
US6527620B1 (en) * 1999-06-21 2003-03-04 Sunnen Products Company Honing tool used to finish blind bores in workpieces and the method of using such tool
US6973367B2 (en) * 2001-12-20 2005-12-06 Maschinenfabrik Gehring Gmbh & Co. Kg Method for producing a bore
EP1321229B1 (de) * 2001-12-20 2009-04-08 Gehring GmbH & Co. KG Verfahren zur Herstellung einer Bohrung
ITPD20040232A1 (it) * 2004-09-22 2004-12-22 Adi Spa Utensile perfezionato, particolarmente per lavorazioni di fresatura
GB0500824D0 (en) * 2005-01-15 2005-02-23 Brown Thomas Improvements relating to honing mandrels
CN114770362B (zh) * 2022-06-21 2022-09-20 常州凯瑞莱精密工具有限公司 具有压力冷却圈的立式珩磨机

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733562A (en) * 1956-02-07 Wheel spindle for grinding machines
GB493949A (en) * 1936-12-19 1938-10-18 Micromatic Hone Corp Improvements in or relating to the grinding or honing of internal cylindrical surfaces
US3153885A (en) * 1961-10-09 1964-10-27 Chauncey A R Keller Cyclindrical cutter device
US3229427A (en) * 1963-07-29 1966-01-18 Diagrit Electrometallics Ltd Apparatus for performing a drilling operation on a workpiece
DE6802096U (de) * 1968-10-11 1969-03-13 Tiefbohr Technik Gmbh U Co Kg Tiefbohrwerkzeug
US3605348A (en) * 1969-09-17 1971-09-20 Charles W Mcclure Honing tool
DE2521149A1 (de) * 1975-05-13 1976-11-25 Gehring Kg Maschf Verfahren zur herstellung feingeschlichteter oberflaechen
GB2038203A (en) * 1978-12-13 1980-07-23 Voith Gmbh J M Wood pulp grinding apparatus
US4423567A (en) * 1981-09-16 1984-01-03 Raven Iii Alfred J Power stroking honing machine and control apparatus
DE3307555C2 (de) * 1983-03-03 1985-07-11 Gühring, Gottlieb, 7470 Albstadt Bohrungs-Nachbearbeitungswerkzeug
DE8325104U1 (de) * 1983-09-01 1984-01-12 KADIA-Diamant Maschinen- und Werkzeugfabrik O. Kopp GmbH & Co, 7440 Nürtingen Werkzeug zum laeppen der wandung von sacklochbohrungen
DE3336626A1 (de) * 1983-10-08 1985-04-25 Peter 7442 Neuffen Nagel Honwerkzeug

Also Published As

Publication number Publication date
DE3764123D1 (de) 1990-09-13
EP0237790A1 (de) 1987-09-23
US4765096A (en) 1988-08-23
ES2016287B3 (es) 1990-11-01
DE3607580A1 (de) 1987-09-10

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