EP0802018B1 - Dispositif pour la rectification d'une face d'extrémité, particulièrement d'une face frontale, au bord d'un alésage d'une pièce - Google Patents

Dispositif pour la rectification d'une face d'extrémité, particulièrement d'une face frontale, au bord d'un alésage d'une pièce Download PDF

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Publication number
EP0802018B1
EP0802018B1 EP97106045A EP97106045A EP0802018B1 EP 0802018 B1 EP0802018 B1 EP 0802018B1 EP 97106045 A EP97106045 A EP 97106045A EP 97106045 A EP97106045 A EP 97106045A EP 0802018 B1 EP0802018 B1 EP 0802018B1
Authority
EP
European Patent Office
Prior art keywords
shaft
accordance
grinding
guide pin
grinding 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
EP97106045A
Other languages
German (de)
English (en)
Other versions
EP0802018A1 (fr
Inventor
Ulrich Dipl.-Ing. Klink (Fh)
Richard Dipl.-Ing. Stampfer (Fh)
Hermann Dipl.-Ing. Schmidt
Dieter Aulich
Jörg Wolfgramm
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.)
Robert Bosch GmbH
Maschinenfabrik Gehring GmbH and Co KG
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH, Maschinenfabrik Gehring GmbH and Co KG filed Critical Robert Bosch GmbH
Publication of EP0802018A1 publication Critical patent/EP0802018A1/fr
Application granted granted Critical
Publication of EP0802018B1 publication Critical patent/EP0802018B1/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
    • B24B33/055—Honing machines or devices; Accessories therefor designed for working plane surfaces
    • 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
    • B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
    • B24B15/02—Machines or devices designed for grinding seat surfaces; Accessories therefor in valve housings
    • 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
    • B24B33/025—Internal surface of conical shape

Definitions

  • the invention relates to a grinding device according to the Preamble of claim 1.
  • a known device of this type (DE 44 41 623 A1) is used for fine machining one at the edge of the workpiece bore ground bevel, used as a sealing seat for a valve needle serves.
  • Such valve bores are, for example provided in injection pumps for internal combustion engines. she have a very small diameter of only a few millimeters and must be processed with high precision.
  • the edge the end face of the hole forming or surrounding it Workpiece must also be machined precisely; when sanding or when machining a chamfer care must also be taken that the frustoconical Surface is exactly concentric to the axis of the hole.
  • the well-known Device for surface processing of the chamfer a conical grinding surface on the rotating around the axis of the hole driven grinding tool.
  • a lapping machine is described in EP 0 399 088 A2.
  • This machine has an eccentric shaft that based on the longitudinal axis of the main shaft is arranged. This axis offset results in a Eccentricity of the lower shaft, so that when the disc arranged at the lower end of the shaft an eccentric path in relation to the axis of rotation, executes.
  • Planhon devices are also known in which the Honing tool with its abrasive coating on the one to be machined Surface is moved. These devices are but because of their relatively large dimensions in confined spaces Space cannot be used.
  • the invention has for its object the device with the smallest possible space requirement so that also small end faces, especially ring faces on the edge of one Drilled or machined hole with very high accuracy can be.
  • the periodic shifting of the grinding tool across The axis of the guide pin enables surface processing the face of the workpiece and also the Create a chamfer on the edge of the hole with a flat Grinding surface, so its shape through wear and dressing is not changed, so that in series production a very high accuracy and quality of the finished surface can be achieved.
  • the shifting movement can be narrow Space can be realized, resulting in a small size of the entire device.
  • the grinding tool expediently driven in rotation via a drive shaft, for example at 2000 to 6000 rpm
  • the periodic shift generated by an eccentric can be, which is preferably part of a driven Hollow shaft with an eccentric bore.
  • the hollow shaft in the opposite direction to the drive shaft with a Speed driven from 500 to 2000 rpm.
  • the way of The transverse displacement is dimensioned such that the grinding surface has the end face to be machined completely, whereby the distance when processing the surrounding area very thin bores is, for example, 0.5 to 3 mm.
  • the device according to FIGS. 1 to 3 has a grinding tool 1, which is designed as a honing stone 3 with an abrasive coating 23 and is attached to a bracket 22.
  • the bracket 22 is a cylindrical slide in which parallel to its axis the honing stone 3 is inserted, and in a through opening 21 of a shaft 17 slidably is arranged.
  • the shaft 17 is in one piece with a guide pin 7 executed in the finished honed hole 5 of a workpiece 6 is immersed.
  • the workpiece 6 is known Way in a holder 8 with gimbal Suspension of the workpiece clamping device arranged, see above that it is on the axis by means of the guide pin 7 2 is aligned, which coincides with the axis of the shaft 17.
  • the shaft 17 forms the inner link of a telescopic drive shaft, whose outer tube 10 in a hollow shaft 9 is supported by bearings 11 and 12.
  • the shaft 17 is with the outer tube 10 in the direction of rotation of the drive shaft 10, 17 positively connected via a cross bolt 19, which penetrates the shaft 17 and with its ends in one Longitudinal slot 18 of the outer tube 10 is located.
  • One inside of the outer tube compression spring 20 loads the Shaft 17 in the direction of the workpiece 6; their bias is adjustable by means of an adjusting screw 30, which in the upper end of the outer tube 10 is inserted.
  • the shaft 17 is in the outer tube 10 under load of the compression spring 20th axially displaceable, the displacement path through the Length of the longitudinal slot 18 is limited.
  • the drive shaft 10, 17 and the hollow shaft 9 are in opposite directions driven.
  • the outer tube 10 of the drive shaft for this purpose at the upper end an external toothing 15, and this upper end lies within a cup-shaped section 13 of the hollow shaft 9, which has an internal toothing there 14 has.
  • a drive pinion engages in both toothings 14 and 15 16 a.
  • the hollow shaft 9 has a to the common axis 2 of the Shafts and the guide pin eccentric bore 24 inside of its lower section 9a, which is an eccentric forms. 2 and 3 show, the cylindrical Slider 22 in the through hole 21 of the shaft 17 arranged so that it with its two convex End faces 25 flat on the wall 26 of the eccentric bore 24 rests and is thus supported there slidingly.
  • the through opening 21 is through one into the guide pin 7 reaching slot 21a keyhole-shaped designed, the slider 22 on the cylindrical wall the passage opening 21 slidably abuts the Honing stone 3 lies within the slot 21a (Fig. 2).
  • the Area of the guide pin 7 protrudes the honing stone 3 with the Grinding pad 23 at both ends of the slot 21a after outside (Fig. 1).
  • the abrasive coating 23 can therefore with his Grinding surface 23a, the end face 4 to be machined Paint over workpiece 6 completely.
  • the hollow shaft 9 is dash-dotted by means of bearings 27 indicated device carrier 28 stored, the on - not shown - guides axially in the direction of the workpiece 6 is deliverable.
  • the carrier 28 and the Holding device 8 aligned so that the guide pin 7 is coaxial to the workpiece bore 5.
  • the Carrier 28 is then advanced in the direction of workpiece 6, the guide pin 7 in the workpiece bore 5 dips, which are pre-processed by honing or finished is.
  • the gimbal is aimed Workpiece 6 exactly on axis 2, which then with the bore axis coincides.
  • the guide pin 7 can be coated with a wear-resistant covering or also Have guide strips 29, which are made of wear-resistant Material, such as hard metal.
  • the delivery can depend on the route and in a known manner can also be controlled depending on the force, one gradual or continuous delivery is possible. Shortly before the abrasive coating 23 of the honing stone 3 with the ring surface 4 of the workpiece comes into contact, the opposite Rotational movements of the drive shaft 10, 17 and Hollow shaft 9 initiated via the drive pinion 16. Therefor the delivery movement can be slowed down or briefly interrupted become. With further delivery, the Grinding surface 23a of the abrasive coating 23 on the workpiece surface 4, which then by rotating movement and at the same time about radial, periodic movements of the Tool 1 is processed.
  • the rotation is from the drive shaft 10, 17 generated and the displacement movement of the eccentric 9a of the hollow shaft 9, the slide 22 with its end faces 25 on the wall 26 of the eccentric bore 24 slides and together with the honing stone 3 in the Through opening 21, 21a periodically in opposite directions radially to the axis 2 is moved.
  • the grinding surface 23a sweeps over the entire workpiece ring surface 4th
  • the delivery movement is stopped as soon as the Grinding surface 23 of the honing stone 3 under the pressure of the spring 20 with a predetermined machining force on the workpiece surface 4 is present.
  • the machining force to be specified can be set by specifying the delivery route, or - at continuous infeed - by adjusting the spring force by means of the set screw 30. To switch off the infeed when the specified gauge block is reached known ones Path and / or force measuring devices are provided his.
  • a grinding tool 1 ' is provided with which at the edge of the workpiece bore 5, a chamfer in the form of a conical ring surface 4 'is ground.
  • the chamfer 4 ' can by means of the grinding tool 1 'by removing the edge of the bore be generated; but it can also be the surface of an existing, previously created chamfer Finished dimensionally and precisely concentric to axis 2 become.
  • the grinding tool 1 ' consists of one with an abrasive coating 23 'provided honing stone 3', which corresponds to the 2 is inserted into a slide 22 '.
  • a through opening 21 'of the shaft 17 extends also up to the guide pin 7, but runs with its central axis 21A of the upper region obliquely to the axis 2 of the guide pin 7.
  • the cylindrical slide 22 ' is accordingly arranged obliquely in the shaft 17 so that its convex end faces 25 'in axial section accordingly are beveled.
  • the central axis of the slider 22 ' coincides with the axis 21A of the through opening, and the grinding surface 23a 'of the grinding pad 23' lies parallel to this axis 21A.
  • the angle between the Grinding surface 23a 'and axis 2 correspond to the target angle the bevel 4 '.
  • the honing stone 3 ' is dimensioned in this way and arranged on the slide 22 'that they are partially up extends into the workpiece bore 5 and during the and sliding movements of the tool 1 'the conical ring surface or chamfer 4 'completely swept.
  • the turning and Sliding movements are as described using the drive shaft and the outer hollow shaft 9 generated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Claims (15)

  1. Dispositif pour la rectification d'une face d'extrémité, particulièrement d'une face frontale, au bord d'un alésage d'une pièce, avec un outil de rectification (1) entraíné, dont la face de rectification est orientée en angle par rapport à l'axe (2) d'un tourillon de guidage (7), qui est dimensionné pour une plongée ajustée dans l'alésage usiné, par exemple rodé à la pierre, et qui est assemblé avec l'outil de rectification (1), caractérisé en ce que l'outil de rectification (1) est formé par au moins une barre de pierrage (3), qui est disposée dans une ouverture de passage (21) de la tige (17) et qui peut se déplacer périodiquement, au moyen d'un excentrique (9a), transversalement à l'axe (2) du tourillon de guidage (7).
  2. Dispositif suivant la revendication 1, caractérisé en ce que le tourillon de guidage (7) est aligné sur un arbre moteur (10, 17), par l'intermédiaire duquel l'outil de rectification (1) est entraíné en rotation.
  3. Dispositif suivant l'une des revendications 1 et 2, caractérisé en ce que l'excentrique (9a) fait partie intégrante d'un arbre creux (9) entraíné avec un alésage excentré (24), dans lequel est logée une fixation (22) de l'outil de rectification (1) avec une possibilité de déplacement transversal par rapport à l'axe de l'arbre creux (9).
  4. Dispositif suivant l'une des revendications 2 et 3, caractérisé en ce que la tige (17) est l'organe interne de l'arbre moteur (10, 17) réalisé sous forme d'arbre télescopique, dont le tube externe (10) est entraíné, la tige (17) ayant une possibilité de déplacement axial limité dans le tube externe (10) de l'arbre moteur (10, 17).
  5. Dispositif suivant la revendication 4, caractérisé en ce que la tige (17) est guidée dans une fente longitudinale (18) du tube externe (10) de l'arbre moteur (10, 17) au moyen d'un axe transversal (19), qui traverse la tige (17) et crée l'assemblage mécanique entre la tige (17) et le tube externe (10) dans le sens de rotation de l'arbre moteur (10, 17).
  6. Dispositif suivant l'une des revendications 1 à 5, caractérisé en ce que l'outil de rectification (1) peut être avancé en direction de la pièce (6).
  7. Dispositif suivant l'une des revendications 1 à 6, caractérisé en ce que la tige (17) est chargée par ressort en direction de la pièce (6), de préférence par l'intermédiaire d'un ressort de pression (20), dont la tension initiale est réglable au moyen d'une vis de réglage (30).
  8. Dispositif suivant l'une des revendications 1 à 7, caractérisé en ce que la tige (17) et le tourillon de guidage (7) sont réalisés d'une seule pièce.
  9. Dispositif suivant l'une des revendications 3 à 8, caractérisé en ce que la fixation (22) de l'outil de rectification (1) est un coulisseau de préférence cylindrique, dont les faces d'extrémité (25) ont une réalisation convexe et sont supportées en glissant sur la paroi (26) de l'alésage excentré (24).
  10. Dispositif suivant l'une des revendications 1 à 9, caractérisé en ce que l'outil de rectification (1), comportant la barre de pierrage (3) au moins, est un outil de pierrage de surfaces planes, la barre de pierrage (3) présentant une garniture d'abrasifs (23) formant la face de rectification (23a).
  11. Dispositif suivant la revendication 10, caractérisé en ce que l'ouverture de passage (21) de la tige (17), pour recevoir la barre de pierrage (3) et sa fixation (22), est réalisée à peu près en forme de trou de serrure avec une fente (21a) qui s'étend jusque dans le tourillon de guidage (7), et dont dépasse la barre de pierrage (3) avec sa garniture d'abrasifs (23) sur au moins une extrémité de fente latérale.
  12. Dispositif suivant l'une des revendications 2 à 10, caractérisé en ce que l'arbre moteur (10, 17) est logé dans l'arbre creux (9) présentant l'alésage excentré (24) et est entraíné en sens contraire de ce dernier, l'arbre moteur (10, 17) présentant de préférence une section avec une denture extérieure (15), qui se situe à l'intérieur d'une section (13) de l'arbre creux (9) avec une denture intérieure (14), et en ce qu'un pignon d'attaque (16) s'engage dans les deux dentures (14 et 15).
  13. Dispositif suivant l'une des revendications 1 à 12, caractérisé en ce qu'un dispositif de fixation (8), avec un dispositif de serrage suspendu à la cardan pour la pièce (6), est associé au dispositif de rectification.
  14. Dispositif suivant l'une des revendications 1 à 13, caractérisé en ce que le tourillon de guidage (7) présente au moins une barre de guidage (29) pour le supportage sur la paroi de l'alésage de la pièce.
  15. Dispositif suivant l'une des revendications 1 à 14, caractérisé en ce que l'outil de rectification (1), avec sa face de rectification plane (23a), peut se déplacer perpendiculairement à l'axe (2) du tourillon de guidage (7), ou l'outil de rectification (1), avec sa face de rectification plane (23a), peut se déplacer par rapport à l'axe (2) du tourillon de guidage (7) sous un angle qui correspond à l'angle de consigne d'un chanfrein sur le bord de l'alésage d'une pièce.
EP97106045A 1996-04-20 1997-04-12 Dispositif pour la rectification d'une face d'extrémité, particulièrement d'une face frontale, au bord d'un alésage d'une pièce Expired - Lifetime EP0802018B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29607203U DE29607203U1 (de) 1996-04-20 1996-04-20 Vorrichtung zum Schleifen einer Stirnfläche, insbesondere einer Ringfläche, am Rand einer Werkstück-Bohrung
DE29607203U 1996-04-20

Publications (2)

Publication Number Publication Date
EP0802018A1 EP0802018A1 (fr) 1997-10-22
EP0802018B1 true EP0802018B1 (fr) 2000-07-19

Family

ID=8022876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106045A Expired - Lifetime EP0802018B1 (fr) 1996-04-20 1997-04-12 Dispositif pour la rectification d'une face d'extrémité, particulièrement d'une face frontale, au bord d'un alésage d'une pièce

Country Status (4)

Country Link
US (1) US6267653B1 (fr)
EP (1) EP0802018B1 (fr)
JP (1) JP3749777B2 (fr)
DE (2) DE29607203U1 (fr)

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
SE512250C2 (sv) * 1998-07-10 2000-02-21 Lidkoeping Machine Tools Ab Abraderande maskin för bearbetning av ändytan på ett arbetsstycke
PL192478B1 (pl) * 1999-07-29 2006-10-31 Prochniewicz Zbigniew Głowica nożowa, zwłaszcza do obróbki gniazd zaworowych w głowicach silników spalinowych
DE20311716U1 (de) 2003-07-30 2003-10-30 Hans Joachim Sauer (GmbH & Co), 22339 Hamburg Vorrichtung zum Schleifen der Dichtfläche eines Dichtsitzes
DE102006012516A1 (de) * 2006-03-18 2007-09-20 Bayerische Motoren Werke Ag Werkzeug zur Bearbeitung einer Dichtfase
JP4990643B2 (ja) * 2007-02-13 2012-08-01 トーヨーエイテック株式会社 ホーニング加工装置
US7861738B2 (en) * 2008-03-04 2011-01-04 Caterpillar Inc. Remanufactured machine component and remanufacturing process
ES2332568B1 (es) * 2008-07-23 2011-04-18 Airbus Operations, S.L. Sistema de repasado orbital post-afeitado de remaches.
JP5078971B2 (ja) * 2009-11-13 2012-11-21 株式会社フジエ 表面加工作業工具ユニット
CN102601730B (zh) * 2012-03-28 2016-08-17 常州博瑞油泵油嘴有限公司 高压共轨喷油器针阀体精准定位夹紧装置
CN102601729B (zh) * 2012-03-28 2016-08-17 常州博瑞油泵油嘴有限公司 针阀体类零件轴向弹性精准定位夹紧装置
CN115256211A (zh) * 2022-08-17 2022-11-01 江苏威马悦达智能装备有限公司 一种阀体类零件专用珩磨刀具及其组装方法

Family Cites Families (11)

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US2226207A (en) * 1938-07-22 1940-12-24 Nomar Louis Nolan Magazine rifle
US2443489A (en) * 1946-05-06 1948-06-15 Weynand Paul Grinding tool
US2525119A (en) * 1947-04-09 1950-10-10 S & D Engineering Company Valve-seat grinding means
US2754642A (en) * 1952-05-14 1956-07-17 Soulet Armand Carrier for grindwheels for the truing of valve seats
US2809482A (en) * 1953-04-10 1957-10-15 Soulet Armand Valve seat grinder
US2769287A (en) * 1955-08-31 1956-11-06 Tobin Arp Mfg Company Valve seat grinder
US4467566A (en) * 1982-01-29 1984-08-28 Sunnen Products Company Valve seat grinding device and tool for using same
JPS59182055A (ja) * 1983-03-31 1984-10-16 Japan Electronic Control Syst Co Ltd バルブシ−ト面の研削方法
DE3627541A1 (de) * 1986-08-13 1988-02-18 Gehring Gmbh Maschf Schleifvorrichtung
ES2017547A6 (es) * 1989-05-24 1991-02-16 Suarez Menendez Alfredo Maquina de lapear.
DE4441623C2 (de) * 1993-12-15 1997-08-28 Kopp Kadia Maschinenbau Verfahren und Werkzeug zum Schleifen einer Fase am Anfang einer Bohrung

Also Published As

Publication number Publication date
JP3749777B2 (ja) 2006-03-01
DE29607203U1 (de) 1997-08-14
JPH1044010A (ja) 1998-02-17
DE59702039D1 (de) 2000-08-24
US6267653B1 (en) 2001-07-31
EP0802018A1 (fr) 1997-10-22

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