EP0338224B1 - Device for finishing pins of crankshafts - Google Patents
Device for finishing pins of crankshafts Download PDFInfo
- Publication number
- EP0338224B1 EP0338224B1 EP89103836A EP89103836A EP0338224B1 EP 0338224 B1 EP0338224 B1 EP 0338224B1 EP 89103836 A EP89103836 A EP 89103836A EP 89103836 A EP89103836 A EP 89103836A EP 0338224 B1 EP0338224 B1 EP 0338224B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- half shell
- crank pin
- tool
- workpiece
- honing
- 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
Links
Images
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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
-
- 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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
- B24B21/06—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving members with limited contact area pressing the belt against the work, e.g. shoes sweeping across the whole area to be ground
- B24B21/08—Pressure shoes; Pressure members, e.g. backing belts
Definitions
- the invention relates to a device for fine machining of the crank pin of crankshafts of the type specified by the preamble of claim 1.
- tools which comprise a bearing part which is designed to be dimensionally stable as a half-shell and which is connected to the respectively associated actuating cylinder in a rotationally movable manner and on which a plurality of support and guide shoes spaced apart from one another in the circumferential direction of the shell surface are preferably arranged made of plastic for a honing band.
- the honing band is used to fine-tune the respectively assigned crank pin of a workpiece in order to increase the load-bearing component for the respective crankshaft bearing and also to round off the edges of lubricating oil holes already formed in pre-machined crank pins.
- the object is achieved to design a device of the type specified in such a way that a further increase in the load share for the individual crankshaft bearings is obtained and thus the out-of-roundness that can still be determined in the previous fine machining in the microscopic range is eliminated as far as possible .
- the advantages that can be achieved with the device according to the invention are primarily recognizable in its simple possibility of incorporation into the previous machining process of crankshafts as one of the previous output stage either upstream or downstream of the processing stage. Because the tools as a result of the resilient design or support of their bearing part have a "breathing" arrangement with respect to the associated crank pin of the workpieces, the guide of the tools, translated with the guide arms, is used by the two master shafts of the device for an optimally true-to-shape machining , with which all processing errors can be optimally eliminated by this device, which still had to be determined after the final stage of the previous fine processing for the microscopic area of surface quality.
- a device for fine machining the crank pins of crankshafts by means of non-rotating tools is formed according to a previously used embodiment with two master shafts, which are arranged axially parallel to the workpiece to be machined and one synchronized with the workpiece
- the master shafts copy a number of tools that match the crank pins of the workpieces, whereby the tool guide is translated using guide arms, which are also carriers of actuating cylinders pressurized with pressure medium, with which the respectively assigned tool is one with respect to the assigned crank pin experienced radially adjustable storage. Finishing of the crank pins is conventionally carried out either with honing stones or with honing bands, which are thus pressed against the crank pins during processing by the actuating cylinders.
- the drawing shows a cross section through a crank pin 1 of a crankshaft which is to be driven as a workpiece to be machined in accordance with the arrow 2 drawn in a clockwise direction in synchronism with the two master shafts (not shown) of the device.
- a copy-guided guide arm 3 is connected to the two master shafts, on which an actuating cylinder 4 pressurized with pressure medium is arranged, with which a tool 5 provided for fine machining of the crank pin 1 can be pressed in the radial direction against the surface of the crank pin.
- the pressure medium supply to the actuating cylinder 4 is conveyed via a functional part 6, flanged to the guide arm 3, of a hydraulic or pneumatic control device, the design of which is of interest only to the extent that an actuating force acting in the direction of arrow 8 is provided by supplying the pressure medium to a filling chamber 7 of the functional part 6 is provided for the actuating cylinder 4.
- This actuating force acting in the direction of the arrow 8 is thus translated to the tool 5, which thus experiences one-sided contact with the guide arm 3 by the two master shafts on the crank pin 1.
- the tool 5 has a half-shell 9 which is designed to be resilient in relation to the actuating force of the actuating cylinder 4 and a base body connected in one piece therewith 10 formed from spring steel.
- the resilient design of the half-shell 9 is obtained by means of individual annular gaps 11 which, with a mutually overlapping design in the circumferential direction, run concentrically with the axis 12 of the half-shell 9 practically coinciding with the crank pin 1.
- the otherwise solid base body 10 is divided into a corresponding plurality of mutually resiliently connected segments 13, which thus at three different radial distances from the axis of the half-shell, which are shown in the drawing for the individual annular gaps 11 effective radial spring direction for the tool 5 result.
- the tool 5 is screwed by means of screws 14 to a tool holder 15 which is rotatably connected to the actuating cylinder 4 by means of a pin 16.
- a stop pin 16 'engaging in a guide curve 15' cooperates in order to obtain a thus limited and relatively rotatable arrangement on the guide arm 3 for the tool 5.
- This relative mobility is also provided with respect to a honing belt 17 which is guided past the half-shell 9 for the fine machining of the crank pin 1 and is pressed against the crank pin 1 with the actuating force of the actuating cylinder 4 effective in the direction of arrow 8.
- two ball guides 18 are also arranged on the guide arm 3, which favor the curvature, which is intended with the tool 5 for enclosing the crank pin 1 with an angle of approximately 150 °, for the honing belt 17 for the entire duration of a respective fine machining.
- the pressing surface of the half-shell 9 which is relevant for the honing band should be finely ground.
- the finishing is not carried out with a honing belt, but directly with the tool 5. This then for a direct investment in the assigned The crank pin 1 provided surface of the half-shell 9 would then only have to be coated with a hard material working as a honing tool, such as diamond, borazon or a ceramic material.
- the "breathing" design of the tool 5, which is achieved with the resiliently connected segments 13, also favors machining of the respective associated crank pin, which is transferred to the master shafts in an optimally true-to-shape manner, so that a correspondingly optimal load share for the individual crankshaft bearings is obtained for the entirety of the workpiece.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
Die Erfindung bezieht sich auf eine Vorrichtung zur Feinbearbeitung der Hubzapfen von Kurbelwellen der durch den Oberbegriff des Patentanspruches 1 angegebenen Gattung.The invention relates to a device for fine machining of the crank pin of crankshafts of the type specified by the preamble of
Bei einer vorbenutzten Vorrichtung dieser Art werden Werkzeuge verwendet, die ein als Halbschale formstabil ausgebildetes und mit dem jeweils zugeordneten Stellzylinder drehbeweglich verbundenes Lagerteil umfassen, an welchem mehrere in Umfangsrichtung der Schalenoberfläche voneinander beabstandete Stütz- und Führungsschuhe bevorzugt aus Kunststoff für ein Honband angeordnet sind. Mit dem Honband wird eine Feinbearbeitung des jeweils zugeordneten Hubzapfens eines Werkstückes zur Erhöhung des Traganteils für das jeweilige Kurbelwellenlager sowie auch für eine Abrundung der Kanten von in vorbearbeiteten Hubzapfen bereits ausgebildeten Schmierölbohrungen vorgenommen. Für diese vorbenutzte Vorrichtung ist dabei auch die alternative Verwendung von Werkzeugen bekannt, bei denen anstelle des Arbeitens mit einem Honband die Feinbearbeitung der Hubzapfen mit einem oder mit mehreren Honsteinen vorgenommen wird, die dabei ähnlich wie bei der Vorrichtung gemäß der DE-PS 30 08 606 eine ebenfalls durch besondere Stütz- und Führungsschuhe an dem jeweils zugeordneten Hubzapfen angedrückte Anordnung an entsprechend halbschalenförmig ausgebildeten Lagerteilen aufweisen.In the case of a previously used device of this type, tools are used which comprise a bearing part which is designed to be dimensionally stable as a half-shell and which is connected to the respectively associated actuating cylinder in a rotationally movable manner and on which a plurality of support and guide shoes spaced apart from one another in the circumferential direction of the shell surface are preferably arranged made of plastic for a honing band. The honing band is used to fine-tune the respectively assigned crank pin of a workpiece in order to increase the load-bearing component for the respective crankshaft bearing and also to round off the edges of lubricating oil holes already formed in pre-machined crank pins. For this previously used device, the alternative use of tools is also known, in which instead of working with a honing band, the fine machining of the crank pins is carried out with one or more honing stones, which is similar to the device according to DE-PS 30 08 606 have an arrangement on correspondingly half-shell-shaped bearing parts, also pressed by special support and guide shoes on the respectively assigned crank pin.
Aus der DE-OS 34 40 350 ist daneben noch die Verwendung von Stütz- und Führungsschuhen bekannt, die an in bezug auf die Hubzapfen eines jeweiligen Werkzeuges zangenartig angeordneten Führungsarmen für Honsteine federelastisch abgestützt sind. Die Honsteine werden gegen den jeweiligen Hubzapfen durch Stellzylinder angedrückt , die zusätzlich zu einem die Führungsarme in bezug auf das Werkstück zangenartig schließenden Arbeitszylinder vorgesehen sind.From DE-OS 34 40 350 the use of support and guide shoes is also known, which are supported on spring-loaded guide arms for honing stones in relation to the crank pin of a respective tool. The honing stones are pressed against the respective crank pin by actuating cylinders which are provided in addition to a working cylinder which closes the guide arms with respect to the workpiece in the manner of pliers.
Aus der US-A-2 270 552, insbesondere Figur 5 ist die elastische Abstützung eines Werkzeuges zu entnehmen, das von einer festen Halbschale gebildet wird.From US-A-2 270 552, in particular Figure 5, the elastic support of a tool can be seen, which is formed by a fixed half-shell.
Mit der durch die Patentansprüche gekennzeichneten Erfindung wird die Aufgabe gelöst, eine Vorrichtung der angegebenen Gattung derart auszubilden, daß damit eine weitere Erhöhung des Traganteils für die einzelnen Kurbelwellenlager erhalten wird und somit die bei der bisherigen Feinbearbeitung im mikroskopischen Bereich noch feststellbaren Unrundheiten möglichst weitgehend beseitigt werden.With the invention characterized by the claims, the object is achieved to design a device of the type specified in such a way that a further increase in the load share for the individual crankshaft bearings is obtained and thus the out-of-roundness that can still be determined in the previous fine machining in the microscopic range is eliminated as far as possible .
Die mit der erfindungsgemäßen Vorrichtung erzielbaren Vorteile sind vorrangig in deren einfacher Eingliederungsmöglichkeit in den bisherigen Bearbeitungsprozeß von Kurbelwellen als eine der bisherigen Endstufe entweder vorgeschaltete oder nachgeschaltete Bearbeitungsstufe erkennbar. Weil die Werkzeuge als Folge der federelastischen Ausbildung oder Abstützung ihres Lagerteils eine in bezug auf den zugeordneten Hubzapfen der Werkstücke "atmende" Anordnung aufweisen, wird dadurch die mit den Führungsarmen übersetzte Führung der Werkzeuge durch die beiden Meisterwellen der Vorrichtung für eine damit optimal formgetreue Bearbeitung genutzt, womit durch diese Vorrichtung sämtliche Bearbeitungsfehler entsprechend optimal beseitigt werden können, die nach der Endstufe der bisherigen Feinbearbeitung für den mikroskopischen Bereich der Oberflächengüte noch festgestellt werden mußten.The advantages that can be achieved with the device according to the invention are primarily recognizable in its simple possibility of incorporation into the previous machining process of crankshafts as one of the previous output stage either upstream or downstream of the processing stage. Because the tools as a result of the resilient design or support of their bearing part have a "breathing" arrangement with respect to the associated crank pin of the workpieces, the guide of the tools, translated with the guide arms, is used by the two master shafts of the device for an optimally true-to-shape machining , with which all processing errors can be optimally eliminated by this device, which still had to be determined after the final stage of the previous fine processing for the microscopic area of surface quality.
Ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung ist in der Zeichnung mit einer Schnittansicht nur eines Teils eines Führungsarmes für ein Werkzeug der erfindungsgemäßen Ausbildung dargestellt.An embodiment of the device according to the invention is shown in the drawing with a sectional view of only part of a guide arm for a tool of the design according to the invention.
Eine Vorrichtung zur Feinbarbeitung der Hubzapfen von Kurbelwellen mittels nicht umlaufender Werkzeuge ist gemäß einer vorbenutzten Ausführungsform mit zwei Meisterwellen gebildet, die zu dem zu bearbeitenden Werkstück achsparallel angeordnet sind und einen mit dem Werkstück synchronen Antrieb erfahren.Durch die Meisterwellen wird eine mit den Hubzapfen der Werkstücke übereinstimmende Vielzahl von Werkzeugen kopiergeführt, wobei die Führung der Werkzeuge mit Führungsarmen übersetzt wird, die auch Träger von druckmittelbeaufschlagten Stellzylindern sind, mit denen das jeweils zugeordnete Werkzeug eine in bezug auf den zugeordneten Hubzapfen radial verstellbare Lagerung erfährt. Eine Feinbearbeitung der Hubzapfen wird herkömmlich entweder mit Honsteinen oder mit Honbändern durchgeführt, die somit bei der Bearbeitung durch die Stellzylinder gegen die Hubzapfen angedrückt werden.A device for fine machining the crank pins of crankshafts by means of non-rotating tools is formed according to a previously used embodiment with two master shafts, which are arranged axially parallel to the workpiece to be machined and one synchronized with the workpiece The master shafts copy a number of tools that match the crank pins of the workpieces, whereby the tool guide is translated using guide arms, which are also carriers of actuating cylinders pressurized with pressure medium, with which the respectively assigned tool is one with respect to the assigned crank pin experienced radially adjustable storage. Finishing of the crank pins is conventionally carried out either with honing stones or with honing bands, which are thus pressed against the crank pins during processing by the actuating cylinders.
Die Zeichnung zeigt einen Querschnitt durch einen Hubzapfen 1 einer Kurbelwelle, die als zu bearbeitendes Werkstück gemäß dem eingezeichneten Pfeil 2 im Uhrzeigergegensinn synchron zu den beiden Meisterwellen (nicht dargestellt) der Vorrichtung angetrieben sein soll. Mit den beiden Meisterwellen ist ein kopiergeführter Führungsarm 3 verbunden, an welchem ein druckmittelbeaufschlagter Stellzylinder 4 angeordnet ist, mit dem ein zur Feinbearbeitung des Hubzapfens 1 vorgesehenes Werkzeug 5 in radialer Richtung gegen die Oberfläche des Hubzapfens angedrückt werden kann. Die Druckmittelversorgung des Stellzylinders 4 wird über ein an den Führungsarm 3 angeflanschtes Funktionsteil 6 einer hydraulischen oder pneumatischen Steuervorrichtung vermittelt, deren Ausbildung nur insoweit interessiert, als damit durch eine Zuleitung des Druckmittels in einen Füllraum 7 des Funktionsteils 6 eine in Richtung des Pfeils 8 wirkende Stellkraft für den Stellzylinder 4 bereitgestellt wird. Diese in Richtung des Pfeils 8 wirkende Stellkraft wird also auf das Werkzeug 5 übersetzt, das somit eine mit dem Führungsarm 3 durch die beiden Meisterwellen kopiergeführte einseitige Anlage an dem Hubzapfen 1 erfährt.The drawing shows a cross section through a
Das Werkzeug 5 ist mit einer in bezug auf die Stellkraft des Stellzylinders 4 federelastisch ausgebildeten Halbschale 9 und einem damit einstückig verbundenen Grundkörper 10 aus Federstahl gebildet. Die federelastische Ausbildung der Halbschale 9 wird durch einzelne Ringspalte 11 erhalten, die mit einer sich in Umfangsrichtung wechselseitig überlappenden Ausbildung konzentrisch zu der mit dem Hubzapfen 1 praktisch zusammenfallenden Achse 12 der Halbschale 9 verlaufen. Durch die Ringspalte 11 wird der im übrigen massiv ausgebildete Grundkörper 10 in eine entsprechende Vielzahl von untereinander federelastisch verbundene Segmente 13 unterteilt, die somit bei den drei verschiedenen Radialabständen zur Achse der Halbschale, die in der Zeichnung für die einzelnen Ringspalte 11 gezeigt sind, ein in radialer Richtung wirksames, federelastisches Verhalten für das Werkzeug 5 ergeben. Das Werkzeug 5 ist mittels Schrauben 14 mit einem Werkzeughalter 15 verschraubt, der mittels eines Stiftes 16 mit dem Stellzylinder 4 drehbeweglich verbunden ist. Mit dem Werkzeughalter wirkt ein in eine Führungskurve 15′einfassender Anschlagstift 16′ zusammen, um damit für das Werkzeug 5 eine somit wegbegrenzte und relativ drehbewegliche Anordnung an dem Führungsarm 3 zu erhalten. Diese relative Beweglichkeit wird auch bezüglich eines Honbandes 17 bereitgestellt, das für die Feinbearbeitung des Hubzapfens 1 an der Halbschale 9 vorbeigeführt und mit der in Richtung des Pfeils 8 wirksamen Stellkraft des Stellzylinders 4 gegen den Hubzapfen 1 angedrückt wird. Zur Führung des Honbandes 17 sind an dem Führungsarm 3 noch zwei Kugelführungen 18 angeordnet, welche die mit dem Werkzeug 5 für eine Umfassung des Hubzapfens 1 mit einem Winkel von etwa 150 ° bezweckte Wölbung den Honbandes 17 für die gesamte Dauer einer jeweiligen Feinbearbeitung begünstigen.The
Wenn die Feinbearbeitung mit einem Honband durchgeführt wird, dann sollte dafür die für das Honband maßgebliche Andrückfläche der Halbschale 9 feingeschliffen sein. Alternativ kann auch daran gedacht werden, die Feinbearbeitung nicht mit einem Honband, sondern direkt mit dem Werkzeug 5 durchzuführen. Die dabei dann für eine direkte Anlage an dem zugeordneten Hubzapfen 1 vorgesehene Oberfläche der Halbschale 9 müßte dann lediglich mit einem als Honwerkzeug arbeitenden Hartstoff, wie Diamant, Borazon oder einem Keramikstoff, beschichtet werden. Die mit den untereinander federelastisch verbundenen Segmenten 13 erreichte "atmende" Ausbildung des Werzeuges 5 begünstigt auch dabei eine zu den Meisterwellen optimal formgetreu übertragene Bearbeitung des jeweils zugeordneten Hubzapfens, so daß für die Gesamtheit des Werkstückes ein entsprechend optimaler Traganteil für die einzelnen Kurbelwellenlager erhalten wird.If the fine machining is carried out with a honing band, then the pressing surface of the half-
Claims (5)
- An apparatus for precision-machining the crank pins (1) of crankshafts by means of non-rotating tools (5) which for contact on one side during the machining of the crank pins of a respective workpiece are mounted - so as to be displaceable in each case radially to the associated crank pin (1) by means of a displacement cylinder (4) acted upon by pressure medium - on a guide arm (3) which is guided in a duplicated manner by two master shafts of the apparatus which are arranged axially parallel to the workpiece and are driven synchronously, one resiliently supported bearing part of each tool (5) being constructed as a half shell (9) which embraces the associated crank pin (1) at an angle of from approximately 135° to a maximum of 180°, characterised in that the half shell (9) is constructed integrally with a dimensionally rigid base member (10) of spring steel and is divided by at least one annular gap (11) extending concentrically to the axis of the half shell into two segments (13) or a corresponding plurality of segments (13) respectively connected resiliently to each other, the base member (10) being provided for a connection, in particular a rotationally movable connection, of the half shell (9) to the displacement cylinder (4).
- An apparatus according to Claim 1, characterised in that the half shell (9) is divided into a corresponding number of segments (13) by a plurality of annular gaps (11) which extend in up to three different radial distances from the axis of the half shell.
- An apparatus according to Claim 2, characterised in that the annular gaps (11) are made mutually overlapping in the peripheral direction.
- An apparatus according to any one of Claims 2 to 3 [sic], characterised in that the or each annular gap (11) is wire-eroded with a radial width of approximately 0.5 mm.
- An apparatus according to any one of Claims 1 to 4, characterised in that the half shell (9) is coated with a mechanically resistant material, such as diamond, borazon or a ceramic material, which acts as a honing tool, on its surface provided for contact with the crank pin (1) of a workpiece, or is ground as a contact surface for a honing belt (17) guided past the half shell.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3813484A DE3813484A1 (en) | 1988-04-21 | 1988-04-21 | DEVICE FOR FINISHING THE CRANKSHAFT PINS |
| DE3813484 | 1988-04-21 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0338224A2 EP0338224A2 (en) | 1989-10-25 |
| EP0338224A3 EP0338224A3 (en) | 1990-08-22 |
| EP0338224B1 true EP0338224B1 (en) | 1993-05-19 |
Family
ID=6352581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89103836A Expired - Lifetime EP0338224B1 (en) | 1988-04-21 | 1989-03-04 | Device for finishing pins of crankshafts |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4979335A (en) |
| EP (1) | EP0338224B1 (en) |
| DE (2) | DE3813484A1 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2702693B1 (en) * | 1993-03-18 | 1995-05-24 | Procedes Machines Speciales | Tools for applying abrasive cloth on a machining machine by grinding cylindrical surfaces on parts. |
| CA2182953C (en) * | 1994-02-09 | 2000-12-12 | Rolf O. Bochsler | Method and apparatus for correcting diametrical taper on a workpiece |
| FR2719516B1 (en) * | 1994-05-04 | 1996-07-26 | Procedes Machines Speciales | Tools for the grooming of cylindrical spans with diameter control of spans. |
| DE4444239C3 (en) * | 1994-12-13 | 2003-05-08 | Supfina Grieshaber Gmbh & Co | finishing machine |
| DE59508072D1 (en) * | 1995-12-28 | 2000-04-27 | Supfina Grieshaber Gmbh & Co | Microfinishing machine |
| DE19607821A1 (en) * | 1996-03-01 | 1997-09-04 | Nagel Masch Werkzeug | Finisher for outer periphery of crankshafts or camshafts |
| DE19619825A1 (en) * | 1996-05-16 | 1997-11-20 | Naxos Union Schleifmittel | Device for microfinishing crankshafts or similar workpieces |
| DE19714677C5 (en) | 1997-04-09 | 2010-12-02 | Boehringer Werkzeugmaschinen Gmbh | Process for the ready-to-use finishing of rotating parts, in particular the bearing points of crankshafts |
| DE29819442U1 (en) | 1998-10-31 | 1999-01-14 | Nagel Maschinen- und Werkzeugfabrik GmbH, 72622 Nürtingen | Device for fine machining an essentially cylindrical workpiece surface |
| DE19850216A1 (en) * | 1998-10-31 | 2000-05-04 | Nagel Masch Werkzeug | Method and device for fine machining of essentially cylindrical workpiece surfaces |
| US6363609B1 (en) | 2000-10-20 | 2002-04-02 | Short Block Technologies, Inc. | Method and apparatus for aligning crankshaft sections |
| US6408663B1 (en) | 2001-02-23 | 2002-06-25 | Short Block Technologies, Inc. | Method and apparatus for truing crankshafts |
| DE10332605B4 (en) * | 2003-07-17 | 2005-09-15 | Ibz Gmbh | Pressing device for a surface treatment device |
| DE102007051047B4 (en) * | 2007-10-16 | 2023-03-23 | Nagel Maschinen- Und Werkzeugfabrik Gmbh | Press-on device for finishing belt and device and method for finishing peripheral surfaces on cylindrical workpiece sections |
| EP2327510B1 (en) | 2009-11-25 | 2011-07-06 | Supfina Grieshaber GmbH & Co. KG | Finishing device |
| EP2399706B9 (en) | 2010-06-22 | 2013-10-02 | Supfina Grieshaber GmbH & Co. KG | Finishing device for finishing the surfaces of workpieces |
| DE102012019814B4 (en) | 2012-10-10 | 2014-11-06 | Hochschule Magdeburg-Stendal | Device for fine machining of convex workpiece surfaces |
| DE102015221939B4 (en) * | 2015-11-09 | 2018-10-31 | Supfina Grieshaber Gmbh & Co. Kg | Finishing belt device and method for finish machining a workpiece |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2060266A (en) * | 1935-05-04 | 1936-11-10 | Thompson Anders | Body and fender finishing machine |
| US2083685A (en) * | 1936-07-27 | 1937-06-15 | Ray Edgar Falkinburg | Grinding or polishing device |
| US2270522A (en) * | 1940-01-27 | 1942-01-20 | Gen Motors Corp | Crankshaft bearing polishing machine |
| DE1158864B (en) * | 1955-01-03 | 1963-12-05 | Daimler Benz Ag | Device for fine drawing of shafts |
| US3537215A (en) * | 1967-12-04 | 1970-11-03 | Litton Industries Inc | Precision rotary location of a crankshaft in an automatic crankpin grinding machine |
| JPS5226097A (en) * | 1975-08-21 | 1977-02-26 | Nisshin Daiyamondo Kk | Supersonic dies grinder |
| DE2739257A1 (en) * | 1977-08-31 | 1979-03-22 | Wacker Chemitronic | DEVICE AND METHOD FOR REMOVING WORKPIECES |
| DE3440350A1 (en) * | 1984-11-05 | 1986-05-15 | Maschinenbau Grieshaber GmbH, 7620 Wolfach | Apparatus for fine machining the bearings of a crankshaft |
| DE8616462U1 (en) * | 1986-06-20 | 1987-10-22 | Maschinenbau Grieshaber Gmbh & Co, 7620 Wolfach | Device for fine machining of crankshaft journals |
-
1988
- 1988-04-21 DE DE3813484A patent/DE3813484A1/en active Granted
-
1989
- 1989-03-04 EP EP89103836A patent/EP0338224B1/en not_active Expired - Lifetime
- 1989-03-04 DE DE8989103836T patent/DE58904389D1/en not_active Expired - Fee Related
- 1989-04-20 US US07/340,972 patent/US4979335A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4979335A (en) | 1990-12-25 |
| DE3813484A1 (en) | 1989-11-02 |
| EP0338224A2 (en) | 1989-10-25 |
| EP0338224A3 (en) | 1990-08-22 |
| DE3813484C2 (en) | 1991-08-01 |
| DE58904389D1 (en) | 1993-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0338224B1 (en) | Device for finishing pins of crankshafts | |
| DE3686801T3 (en) | Microfinishing device and method. | |
| DE60126707T2 (en) | Device for machining cylindrical running surfaces by means of an abrasive belt | |
| WO1996003257A1 (en) | Process and device for grinding cams with concave flanks | |
| DE69512956T2 (en) | Belt grinding tool for cylindrical bearing surfaces with diameter control of the bearings | |
| DE19634839A1 (en) | Fine machining with vibrating head | |
| DE2718339A1 (en) | DEVICE AND METHOD FOR GRINDING WHEEL DRESSING | |
| EP3135433A2 (en) | Surface processing unit, machine tool and method of operating | |
| EP0913232B1 (en) | Apparatus for machining cylindrical surfaces | |
| EP0802017B1 (en) | Device for honing shafts, particularly crankshafts | |
| DE1933575B2 (en) | Device for grinding outer or inner surfaces of workpieces | |
| EP0955128A2 (en) | Sealing arrangement, especially for injectors of an internal combustion engine and method for manufacturing such a sealing seat | |
| EP0997229B1 (en) | Method and apparatus for finishing cylindrical workpieces | |
| DE3249858C2 (en) | ||
| DE3618315C1 (en) | Process and tool for machining the surfaces of workpieces | |
| DE3841976C1 (en) | Machine for the two-stage finish-machining of camshafts | |
| EP4015145A2 (en) | Finishing system | |
| CH668212A5 (en) | DEVICE FOR COPY GRINDING CYLINDRICAL AND spherical surfaces. | |
| WO2012025072A2 (en) | Method for producing honed surfaces | |
| DE29819443U1 (en) | Device for fine machining of essentially cylindrical workpiece surfaces | |
| EP0906173B1 (en) | Device for grinding-in crankshafts or the like | |
| DD289733A5 (en) | GRINDING TOOL FOR GRINDING AND POLISHING INTERIOR FINISHES | |
| EP1506838B1 (en) | Tool for the machining of shaft surfaces for bearings | |
| DE2856623C2 (en) | Device for honing the outer surface of cylindrical workpieces | |
| DE29718547U1 (en) | Device for the fine grinding of shafts, in particular crankshafts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB |
|
| 17P | Request for examination filed |
Effective date: 19900714 |
|
| 17Q | First examination report despatched |
Effective date: 19911004 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
| ET | Fr: translation filed | ||
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19930514 |
|
| REF | Corresponds to: |
Ref document number: 58904389 Country of ref document: DE Date of ref document: 19930624 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19940225 Year of fee payment: 6 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19941130 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19950304 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: RN |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: FC |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19950304 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19970417 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19990521 Year of fee payment: 11 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010103 |