DE4330800A1 - Centreless grinding equipment esp. for nozzle needles etc. - has workpiece held in V-notch of supporting block by spring loaded finger and rotated by belt bearing against side of workpiece opposite to grinding wheel - Google Patents

Centreless grinding equipment esp. for nozzle needles etc. - has workpiece held in V-notch of supporting block by spring loaded finger and rotated by belt bearing against side of workpiece opposite to grinding wheel

Info

Publication number
DE4330800A1
DE4330800A1 DE19934330800 DE4330800A DE4330800A1 DE 4330800 A1 DE4330800 A1 DE 4330800A1 DE 19934330800 DE19934330800 DE 19934330800 DE 4330800 A DE4330800 A DE 4330800A DE 4330800 A1 DE4330800 A1 DE 4330800A1
Authority
DE
Germany
Prior art keywords
workpiece
grinding
grinding wheel
notch
supporting block
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.)
Ceased
Application number
DE19934330800
Other languages
German (de)
Inventor
Guenther Hofmann
Wolfgang Dr Ing Schnedler
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.)
NOMOCO MASCHINENBAU Gebr
Original Assignee
NOMOCO MASCHINENBAU Gebr
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 NOMOCO MASCHINENBAU Gebr filed Critical NOMOCO MASCHINENBAU Gebr
Priority to DE19934330800 priority Critical patent/DE4330800A1/en
Publication of DE4330800A1 publication Critical patent/DE4330800A1/en
Ceased legal-status Critical Current

Links

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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/10—Devices or means for dressing or conditioning abrasive surfaces of travelling flexible backings coated with abrasives; Cleaning of abrasive belts
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/16—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding sharp-pointed workpieces, e.g. needles, pens, fish hooks, tweezers or record player styli
    • 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
    • B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

The round cylindrical workpiece (1) is held in the V-notch of a supporting block (1) by a spring loaded finger (3). The endless belt (4) bears against the surface of the workpiece on the side opposite to that of the grinding wheel and drives the workpiece round. An alternative arrangement uses an abrasive belt instead of a grinding wheel. USE/ADVANTAGE - Centreless grinding equipment is esp. applicable to slender workpieces or where drive onto end face is not feasible. Eliminates roundness errors. Economical, high precision grinding method.

Description

Es ist bekannt, daß beim spitzenlosen Schleifen eine Regelscheibe , eine Schleifscheibe und eine Werkstückaufnahme Verwendung finden. Die rotatorische Regelscheibe treibt das Werkstück an und bestimmt im Zusammenwirken mit der Werkstückaufnahme die Position des Werkstücks zur Schleifscheibe.It is known that with centerless grinding, a regulating wheel, a grinding wheel and a workpiece holder are used. The rotary control disc drives and determines the workpiece the position of the Workpiece to the grinding wheel.

Die Mantelfläche der Regelscheibe, die das Werkstück berührt, hat den Nachteil, daß sie nicht rundlauffehler­ frei ist, da die Regelscheibe drehgelagert ist.The outer surface of the regulating wheel that holds the workpiece touched has the disadvantage that it does not run out is free because the regulating wheel is pivoted.

Bekannt ist ein Verfahren bei dem das Werkstück in Schuhen aufge­ nommen und an den Stirnflächen durch Mitnahme in Rotation versetzt wird. Dies geschieht zum Beispiel mittels Magnettreiber.A method is known in which the workpiece is put on in shoes taken and rotated on the end faces by entrainment becomes. This is done, for example, using a magnetic driver.

Nachteil dieses Verfahrens ist, daß ein Stirnseitenantrieb nur bei großen Werkstückdurchmessern und bei geeigneten Werkstückstirnflächen möglich ist.Disadvantage of this method is that an end face drive only large workpiece diameters and with suitable workpiece faces is possible.

Bekannt ist ein weiteres Verfahren, bei dem die Werkstücke in umlaufenden Käfigen geführt und angetrieben werden.Another method is known in which the workpieces in circulating cages are guided and driven.

Der hohe Fertigungsaufwand der vielen Werksstückaufnahmen im Käfig stellt einen Nachteil dar.The high manufacturing effort of the many workpiece holders in the cage poses is a disadvantage.

Die notwendige Lagerung des rotierenden Käfigs verursacht einen Rund­ lauffehler des Systems, der zur Einschränkungen der Werkstückgenauig­ keit führt.The necessary storage of the rotating cage causes a round Running errors of the system, which restrict the workpiece precisely leads.

Die im Patentanspruch 1 angegebene Erfindung ist insbesondere geeignet für dünne Werkstücke, zum Beispiel Nadeln mit Spitzen oder kleinen Stirnflächen, oder für größere Werkstücke deren Stirnflächen nicht für die Antriebsmitnahme geeignet sind.The invention specified in claim 1 is particularly suitable for thin workpieces, for example needles with tips or small ones End faces, or for larger workpieces whose end faces are not for the drive entrainment are suitable.

Die Werkstücke werden gemäß Patentanspruch 1 durch ein Antriebsband angetrieben,welches direkt an der zu schleifenden Mantelfläche mit dem Werkstück in Kontakt ist. The workpieces are according to claim 1 by a drive belt driven, which directly on the surface to be ground with is in contact with the workpiece.  

Die Aufnahme des Werkstücks erfolgt in einem einzigen feststehenden Prisma, nämlich der Werkstückaufnahme, welche das Werkstück vollkommen rundlauffehlerfrei positioniert. Da jedes Folgewerkstück im gleichen feststehenden Prisma zur Auflage kommt, ist eine sehr gleichbleibende Schleifgenauigkeit gegeben.The workpiece is held in a single fixed position Prism, namely the workpiece holder, which the workpiece positioned completely free of concentricity. Because every follow-up workpiece in the same fixed prism is a very constant grinding accuracy.

Die wirtschaftlich aufwendige Herstellung möglichst gleicher Werkstückaufnahmen für den rotierenden Käfig entfällt.The economically complex production, if possible, the same Workpiece holders for the rotating cage are not required.

Nur die Aufnahme des Werkstücks in einem festen Prisma, der Werkstück­ aufnahme, und das Antriebsband gewährleisten eine präzise Position und den hochgenauen Rundlauf des Werkstücks.Only the workpiece is held in a fixed prism, the workpiece recording, and the drive belt ensure a precise position and the high-precision concentricity of the workpiece.

Rundlauffehler von drehgelagerten Werkzeugen, die direkt mit dem zu schleifenden Werkstück in Kontakt sind, entfallen.Concentricity errors of rotatably mounted tools that directly with the workpiece to be ground are eliminated.

Zur Erzielung einer höchstgenauen Werkstückqualität sind die gleichen Anforderungen an die Kontaktzone zwischen dem Werkstück und dem Schleifwerkzeug hinsichtlich der Laufruhe zu stellen.The same are the same to achieve the most precise workpiece quality Requirements for the contact zone between the workpiece and the To provide grinding tools with regard to smooth running.

Dies wird durch eine weitere vorteilhafte Ausbildung des Verfahrens und der Vorrichtung erreicht.This is made possible by a further advantageous embodiment of the method and reached the device.

Gemäß Patentanspruch 2 wird anstelle der Schleifscheibe das Schleifband verwendet.According to claim 2, the grinding belt instead of the grinding wheel used.

Dadurch sind Rundlauffehler und die hohe Massenunwucht einer Schleif­ scheibe ausgeschlossen, da das Schleifband zum Einsatz kommt.This causes runout errors and the high mass imbalance of a grinding disc excluded because the grinding belt is used.

Verfahren und Vorrichtung gemäß Patentanspruch 1 und Patentanspruch 2 stellen ein wirtschaftliches und hochpräzises spitzenloses Schleifsystem dar, bei dem weder in der Werkstückaufnahme, im Werkstückantrieb noch beim Schleifwerkzeug negative Rundlauffehler und hohe Massenunwuchten vorhanden sind.Method and device according to claim 1 and claim 2 represent an economical and highly precise centerless Grinding system, in which neither in the workpiece holder, in Workpiece drive still negative runout errors with the grinding tool and high mass unbalances are present.

Im Gegensatz zu den bekannten Werkzeugen Schleifscheibe, Regelscheibe und Käfig sind die Werkzeuge Werkstückaufnahme, Antriebsband und Schleifband von vergleichbar geringem Gewicht und geringer Masse. Das Ein- und Umrichten der Maschine wird dadurch erheblich erleichtert. In contrast to the known tools grinding wheel, regulating wheel and cage are the tools workpiece holder, drive belt and Sanding belt of comparably low weight and low mass. This makes setting up and converting the machine considerably easier.  

Ein Ausführungsbeispiel der Erfindung ist in den 3 Zeichnungen (Fig. 1-3) dargestellt und im folgenden näher beschrieben. Es zeigt Fig. 1 das Werkstück (1) in der Werkstückaufnahme (2). Das Antriebsband (4) treibt das Werkstück (1) an.An embodiment of the invention is shown in the 3 drawings ( Fig. 1-3) and described in more detail below. It shows Fig. 1, the workpiece (1) in the workpiece holder (2). The drive belt ( 4 ) drives the workpiece ( 1 ).

Der Finger (3) drückt das Werkstück (1) in die Werkstückaufnahme (2). Die Schleifscheibe (5) ist gegenüber dem Antriebsband (4) angeordnet.The finger ( 3 ) presses the workpiece ( 1 ) into the workpiece holder ( 2 ). The grinding wheel ( 5 ) is arranged opposite the drive belt ( 4 ).

In Fig. 2 ist beispielhaft eine Düsennadel dargestellt, welche an der zu schleifenden Mantelfläche aufgenommen und angetrieben wird. Das Antriebsband (4) ist hier als Rechteckband dargestellt, jedoch sind auch runde (Rundbänder), dreieckige und andere Bandquerschnitte ein­ setzbar.In FIG. 2, a nozzle needle is exemplified, which is incorporated in the jacket surface to be ground and driven. The drive belt ( 4 ) is shown here as a rectangular belt, but round (round belts), triangular and other belt cross sections can also be used.

In Fig. 3 ist das Antriebsband (4) und die Werkstückaufnahme (2) gemäß Fig. 1 und Fig. 2 dargestellt und gemäß Patentanspruch 2 das Schleifband (6).In Fig. 3, the drive belt ( 4 ) and the workpiece holder ( 2 ) according to Fig. 1 and Fig. 2 is shown and according to claim 2, the grinding belt ( 6 ).

Das Schleifband (6) wird über die Diamant-Abrichtrolle (9) abgerichtet.The grinding belt ( 6 ) is dressed using the diamond dressing roller ( 9 ).

Der Schleifschuh (7) stellt das Schleifband (6) zum Werkstück (1) zu.The grinding shoe ( 7 ) feeds the grinding belt ( 6 ) to the workpiece ( 1 ).

Claims (2)

1. Verfahren und Vorrichtung zum spitzenlosen Schleifen von runden, zylinderförmigen Werkstücken, dadurch gekennzeichnet, daß die Werkstücke außen in einem einzigen feststehenden Prisma, der Werkstückaufnahme, aufgenommen werden und von einem Antriebs­ band direkt gegenüber der Schleifzone in Rotation versetzt werden. Zum Schleifen wird eine Schleifscheibe verwendet.1. The method and device for centerless grinding of round, cylindrical workpieces, characterized in that the workpieces are received outside in a single fixed prism, the workpiece holder, and are set in rotation by a drive belt directly opposite the grinding zone. A grinding wheel is used for grinding. 2. Verfahren und Vorrichtung zum spitzenlosen Schleifen von runden, zylinderförmigen Werkstücken nach Anspruch 1, dadurch gekennzeichnet, daß zum Schleifen ein Schleifband verwendet wird.2. Method and device for centerless grinding of round, cylindrical workpieces according to claim 1, characterized, that a grinding belt is used for grinding.
DE19934330800 1993-09-10 1993-09-10 Centreless grinding equipment esp. for nozzle needles etc. - has workpiece held in V-notch of supporting block by spring loaded finger and rotated by belt bearing against side of workpiece opposite to grinding wheel Ceased DE4330800A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934330800 DE4330800A1 (en) 1993-09-10 1993-09-10 Centreless grinding equipment esp. for nozzle needles etc. - has workpiece held in V-notch of supporting block by spring loaded finger and rotated by belt bearing against side of workpiece opposite to grinding wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934330800 DE4330800A1 (en) 1993-09-10 1993-09-10 Centreless grinding equipment esp. for nozzle needles etc. - has workpiece held in V-notch of supporting block by spring loaded finger and rotated by belt bearing against side of workpiece opposite to grinding wheel

Publications (1)

Publication Number Publication Date
DE4330800A1 true DE4330800A1 (en) 1994-02-17

Family

ID=6497422

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19934330800 Ceased DE4330800A1 (en) 1993-09-10 1993-09-10 Centreless grinding equipment esp. for nozzle needles etc. - has workpiece held in V-notch of supporting block by spring loaded finger and rotated by belt bearing against side of workpiece opposite to grinding wheel

Country Status (1)

Country Link
DE (1) DE4330800A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2747332A1 (en) * 1996-04-12 1997-10-17 Emmanuel Maurin Device for sharpening welding electrodes, e.g. for TIG welding
EP1514642A2 (en) * 2003-09-12 2005-03-16 Thielenhaus Technologies GmbH Apparatus and method for finishing shafts, especially crank- and camshafts
DE102012223276A1 (en) 2012-12-14 2014-06-18 Erwin Junker Grinding Technology A.S. METHOD AND CIRCULAR GRINDING MACHINE FOR TIP-FREE CIRCULAR GRINDING
CN105563247A (en) * 2016-03-03 2016-05-11 翁文彬 Bracket of centerless grinding machine
CN105710739A (en) * 2016-03-17 2016-06-29 许月进 Damping connecting piece for workpiece support of centerless grinding machine
CN107186592A (en) * 2017-06-14 2017-09-22 嘉兴学院 A kind of cylindrical roller grinding attachment and method
DE102019119610A1 (en) * 2019-07-19 2020-08-27 Schaeffler Technologies AG & Co. KG Apparatus and method for shoe grinding

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE889718C (en) * 1951-08-11 1953-09-14 Ernst Fischer Process for the machining of tenons on precisely round ground cylindrical workpieces
DE1009525B (en) * 1952-08-25 1957-05-29 Gotthold Pahlitzsch Dr Ing Centerless grinding machine for cylindrical grinding of workpieces
DE2331068A1 (en) * 1973-06-19 1975-01-16 Greif Werk Gmbh Fuer Schleif U Centreless grinding using belt grinding machine or polisher - has cork or plastic counter pressure or drive roller with belt tensioning arm

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE889718C (en) * 1951-08-11 1953-09-14 Ernst Fischer Process for the machining of tenons on precisely round ground cylindrical workpieces
DE1009525B (en) * 1952-08-25 1957-05-29 Gotthold Pahlitzsch Dr Ing Centerless grinding machine for cylindrical grinding of workpieces
DE2331068A1 (en) * 1973-06-19 1975-01-16 Greif Werk Gmbh Fuer Schleif U Centreless grinding using belt grinding machine or polisher - has cork or plastic counter pressure or drive roller with belt tensioning arm

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2747332A1 (en) * 1996-04-12 1997-10-17 Emmanuel Maurin Device for sharpening welding electrodes, e.g. for TIG welding
EP1514642A2 (en) * 2003-09-12 2005-03-16 Thielenhaus Technologies GmbH Apparatus and method for finishing shafts, especially crank- and camshafts
DE10342137A1 (en) * 2003-09-12 2005-04-07 Thielenhaus Technologies Gmbh Apparatus and method for finish machining of shafts, in particular crankshafts and camshafts
EP1514642A3 (en) * 2003-09-12 2006-01-18 Thielenhaus Technologies GmbH Apparatus and method for finishing shafts, especially crank- and camshafts
DE10342137B4 (en) * 2003-09-12 2010-07-29 Thielenhaus Technologies Gmbh Apparatus and method for finish machining of shafts, in particular crankshafts and camshafts
WO2014090678A1 (en) * 2012-12-14 2014-06-19 Erwin Junker Grinding Technology A.S. Method and cylindrical grinding machine for centerless cylindrical grinding
DE102012223276A1 (en) 2012-12-14 2014-06-18 Erwin Junker Grinding Technology A.S. METHOD AND CIRCULAR GRINDING MACHINE FOR TIP-FREE CIRCULAR GRINDING
CN104870144A (en) * 2012-12-14 2015-08-26 埃尔温容克尔研磨技术股份公司 Method and cylindrical grinding machine for centerless cylindrical grinding
DE102012223276B4 (en) * 2012-12-14 2015-09-03 Erwin Junker Grinding Technology A.S. METHOD AND CIRCULAR GRINDING MACHINE FOR TIP-FREE CIRCULAR GRINDING
RU2638478C2 (en) * 2012-12-14 2017-12-13 Эрвин Юнкер Грайндинг Текнолоджи А.С. Method and cylindrical grinding machine for centerless cylindrical grinding
US11383342B2 (en) 2012-12-14 2022-07-12 Erwin Junker Grinding Technology A.S. Method and cylindrical grinding machine for centerless cylindrical grinding
CN105563247A (en) * 2016-03-03 2016-05-11 翁文彬 Bracket of centerless grinding machine
CN105710739A (en) * 2016-03-17 2016-06-29 许月进 Damping connecting piece for workpiece support of centerless grinding machine
CN107186592A (en) * 2017-06-14 2017-09-22 嘉兴学院 A kind of cylindrical roller grinding attachment and method
DE102019119610A1 (en) * 2019-07-19 2020-08-27 Schaeffler Technologies AG & Co. KG Apparatus and method for shoe grinding

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