EP0457016B1 - Grinding machine involving a grinding unit comprising one or more spindles disposed on a machine bed - Google Patents

Grinding machine involving a grinding unit comprising one or more spindles disposed on a machine bed Download PDF

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Publication number
EP0457016B1
EP0457016B1 EP91105464A EP91105464A EP0457016B1 EP 0457016 B1 EP0457016 B1 EP 0457016B1 EP 91105464 A EP91105464 A EP 91105464A EP 91105464 A EP91105464 A EP 91105464A EP 0457016 B1 EP0457016 B1 EP 0457016B1
Authority
EP
European Patent Office
Prior art keywords
grinding
workpiece
machine
unit
spindles
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
EP91105464A
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German (de)
French (fr)
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EP0457016A1 (en
Inventor
Manfred Leidecker
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.)
Buderus Schleiftechnik GmbH
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Buderus Schleiftechnik GmbH
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Application filed by Buderus Schleiftechnik GmbH filed Critical Buderus Schleiftechnik GmbH
Publication of EP0457016A1 publication Critical patent/EP0457016A1/en
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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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/002—Grinding heads
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0061—Other grinding machines or devices having several tools on a revolving tools box
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/005—Feeding or manipulating devices specially adapted to grinding machines

Definitions

  • the invention relates to a grinding machine with a grinding unit arranged on the machine bed, the position of which can be changed by turning and / or moving such that the grinding spindle required in each case can be effective for various grinding operations.
  • a wide variety of grinding units having grinding spindles are known. A complicated construction is described for example in DE-PS 31 33 488.
  • the grinding unit is rotatable about a first vertical axis and adjustable about a second horizontal axis. Three different grinding wheels can be brought into engagement with the workpiece.
  • DE-A-820 519 describes a turret lathe which has a turret head on which both a plurality of machining tools and loading and unloading devices are arranged.
  • the loading and unloading devices consist of two separate stations, which are stationary next to each other over the circumference of the turret, like the processing stations. Because of this arrangement and the necessary movement of the relatively large mass of the entire turret, the movement sequences allow a minimum time for one working cycle.
  • the invention has for its object to provide a simply constructed workpiece feed and removal device and to design such that the movement of machine elements in the machining area of the machine tool, which is required anyway, and thus also the drive means already present, can be used directly and in a very short cycle time for the workpiece change .
  • a workpiece feed and removal device is mounted on the grinding head, which consists of a turntable with several (at least two) workpiece receivers distributed over the circumference.
  • FIG. 1 and 2 is a grinding unit which has the four grinding spindles 2, 3, 4 and 5 mounted in the four corners of a square base plate 1 rotatable about the axis A in such a way that a rotation of the Base plate is brought to the workpiece by 90 o each time a different grinding wheel 6, 7, 8 or 9 in the basic grinding position.
  • the grinding process takes place in the usual way and therefore does not have to be described in more detail.
  • the principle of the present invention is illustrated in FIG. 2.
  • the workpiece loading unit 10 is mounted on the base plate 1. It is also rotatable and has the two expanding mandrels 11a and 11b, which run at right angles to one another and can be inserted into the bore of a workpiece 12 and accommodate it.
  • Base plate 1 and workpiece loading device 10 can be coordinated with one another in such a way that automatic workpiece feeding and removal as well as grinding of the clamped workpiece can take place.
  • the machine and control means available for the grinding unit with several grinding spindles can also be used for the workpiece loading device with little effort.
  • Figures 3 and 4 show another embodiment.
  • the base plate 14 with the two grinding spindles 15 and 16 is linearly displaceable, as the arrows indicate.
  • the grinding spindle 16 is replaced by the workpiece loading device 17, which has two mutually opposite expanding mandrels 18 and 19 and can be pivoted about the point B, so that an assembly position and a transfer position can be assumed.
  • Base plate 14 and workpiece loading device 17 are coordinated so that the grinding process and the workpiece feed and removal can be carried out automatically.
  • the transfer position is indicated by the workpiece 20 shown in broken lines.
  • the grinding unit is sensibly combined with a workpiece loading device in such a way that the existing control elements are optimally used for both functions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Crushing And Grinding (AREA)
  • Machine Tool Units (AREA)

Abstract

Several grinding spindles (2, 3, 5) and a work-loading and work-unloading attachment (10) are provided on a movable base plate (1). <IMAGE>

Description

Die Erfindung betrifft eine Schleifmaschine mit einer auf dem Maschinenbett angeordneten Schleifeinheit, deren Position durch Drehen und/oder Verschieben so geändert werden kann, daß für verschiedene Schleifoperationen die jeweils benötigte Schleifspindel wirksam werden kann.
Mehrere Schleifspindeln aufweisende Schleifeinheiten sind in den unterschiedlichsten Ausführungen bekannt. Eine komplizierte Konstruktion ist beispielsweise in der DE-PS 31 33 488 beschrieben. Die Schleifeinheit ist um eine erste vertikale Achse drehbar sowie um eine zweite horizontale Achse verstellbar. Es können drei verschiedene Schleifscheiben mit dem Werkstück in Eingriff gebracht werden.The invention relates to a grinding machine with a grinding unit arranged on the machine bed, the position of which can be changed by turning and / or moving such that the grinding spindle required in each case can be effective for various grinding operations.
A wide variety of grinding units having grinding spindles are known. A complicated construction is described for example in DE-PS 31 33 488. The grinding unit is rotatable about a first vertical axis and adjustable about a second horizontal axis. Three different grinding wheels can be brought into engagement with the workpiece.

Um alle Schleifvorgänge in einer Werkstückeinspannung programmgesteuert selbsttätig durchführen zu können, werden solche Schleifeinheiten mit mehreren Schleifscheiben eingesetzt. Für einen selbsttätigen programmgesteuerten Fertigungsablauf ist aber auch die Werkstückzu- und -abführung von Bedeutung. Es sind schon Einrichtungen hierfür bekannt, welche einen Drehtisch aufweisen, welcher in einer Drehstellung das rohe Werkstück aufnimmt, in der nächsten Drehstellung das Werkstück in Schleifpositionen bringt und in einer weiteren Drehstellung das fertig geschliffene Werkstück wieder abführt.
In der DE-PS 2907 282 ist das Prinzip einer solchen Werkstückzu- und -abführungsvorrichtung beschrieben. Wenn man eine Schleifmaschine sowohl mit einer Schleifeinheit als auch mit einer Werkstückzu- und -abführung ausstatten soll, ist hierfür ein erheblicher Aufwand notwendig. Es ist auch schwierig, alle hierfür notwendigen Maschinenteile mit den dazugehörigen Steuerelementen räumlich sinnvoll unterzubringen. In der DE-A-820 519 wird zwar eine Revolverdrehbank beschrieben, welche einen Revolverkopf aufweist, auf welchem sowohl mehrere Bearbeitungswerkzeuge als auch Be- und Entladeeinrichtungen angeordnet sind. Die Be- und Entladeeinrichtungen bestehen aus zwei getrennten Stationen, welche über den Umfang des Revolverkopfes stationär nebeneinander, wie die Bearbeitungsstationen, liegen. Die Bewegungsabläufe erlauben wegen dieser Anordnung und notwendigen Bewegung der relativ großen Masse des gesamten Revolverkopfes eine Mindestzeit für einen Arbeitszyklus.In order to be able to carry out all grinding processes automatically in a workpiece clamping under program control, such grinding units with several grinding wheels are used. For an automatic program-controlled production process, the workpiece feed and removal is also important. Devices for this purpose are already known which have a rotary table which receives the raw workpiece in one rotary position, brings the workpiece into grinding positions in the next rotary position and removes the finished ground workpiece in a further rotary position.
The principle of such a workpiece feed and removal device is described in DE-PS 2907 282. If you want to equip a grinding machine with a grinding unit as well as with a workpiece feed and removal, this requires considerable effort. It is also difficult to place all the necessary machine parts with the associated control elements in a spatially sensible manner. DE-A-820 519 describes a turret lathe which has a turret head on which both a plurality of machining tools and loading and unloading devices are arranged. The loading and unloading devices consist of two separate stations, which are stationary next to each other over the circumference of the turret, like the processing stations. Because of this arrangement and the necessary movement of the relatively large mass of the entire turret, the movement sequences allow a minimum time for one working cycle.

Der Erfindung liegt die Aufgabe zugrunde, eine einfach aufgebaute Werkstückzu- und -abführeinrichtung zu schaffen und so auszubilden, daß die ohnehin erforderliche Bewegung von Maschinenelementen im Bearbeitungsbereich der Werkzeugmaschine und damit auch die schon vorhanden Antriebsmittel unmittelbar auch in kürzester Taktzeit für den Werkstückwechsel eingesetzt werden können.The invention has for its object to provide a simply constructed workpiece feed and removal device and to design such that the movement of machine elements in the machining area of the machine tool, which is required anyway, and thus also the drive means already present, can be used directly and in a very short cycle time for the workpiece change .

Zur Lösung dieser Aufgabe werden die in Patentanspruch 1 angegebenen Merkmale vorgeschlagen.
Anstelle einer der Schleifspindeln ist auf dem Schleifkopf eine Werkstückzu- und abführeinrichtung montiert, welche aus einem Drehtisch mit mehreren (mindestens zwei) über den Umfang verteilten Werkstückaufnehmern besteht.To achieve this object, the features specified in claim 1 are proposed.
Instead of one of the grinding spindles, a workpiece feed and removal device is mounted on the grinding head, which consists of a turntable with several (at least two) workpiece receivers distributed over the circumference.

In der Zeichnung ist die Erfindung an Ausführungsbeispielen schematisch dargestellt.In the drawing, the invention is shown schematically using exemplary embodiments.

Es zeigen:

Fig. 1
eine drehbare SChleifeinheit mit vier verschiedenen Schleifspindeln.
Fig. 2
eine Schleifeinheit gemäß Fig. 1, bei welchem eine Schleifspindel durch eine Werkstückladeeinheit ersetzt ist.
Fig. 3
eine verschiebbare Schleifeinheit mit zwei Schleifspindeln, wobei gemäß
Fig. 4
eine Schleifspindel durch eine Werkstückladeeinheit ersetzt ist.
Show it:
Fig. 1
a rotatable grinding unit with four different grinding spindles.
Fig. 2
1, in which a grinding spindle is replaced by a workpiece loading unit.
Fig. 3
a sliding grinding unit with two grinding spindles, according to
Fig. 4
a grinding spindle is replaced by a workpiece loading unit.

Bei dem Ausführungsbeispiel gemäß den Fig. 1 und 2 handelt es sich um eine Schleifeinheit, welche in den vier Ecken einer quadratischen, um die Achse A drehbaren Grundplatte 1 die vier Schleifspindeln 2, 3, 4 und 5 so montiert hat, daß einer Drehung der Grundplatte jeweils um 90o jedesmal eine andere Schleifscheibe 6, 7, 8 oder 9 in der Schleifgrundposition zu dem Werkstück gebracht ist.
Der Schleifvorgang erfolgt in der üblichen Weise und muß deshalb nicht näher beschrieben werden. In der Fig. 2 ist das Prinzip vorliegender Erfindung veranschaulicht. Anstelle der Schleifspindel 4 ist auf der Grundplatte 1 die Werkstuckladeeinheit 10 montiert. Sie ist ebenfalls drehbar und weist rechtwinklig zueinander verlaufend die beiden Spreizdorne 11a und 11 b auf, welche in die Bohrung eines Werkstückes 12 einführbar sind und dieses aufnehmen. Während die SChleifeinheit 5 in Schleifposition zu dem eingespannten und zu schleifenden Werkstück 12 b steht, kann mit der Werkstückladeeinrichtung ein fertig geschliffenes, vorher in 90o Drehstellung der Grundplatte 1 aus dem Spannfutter 13 mit dem Spreizdorn 11 b entnommenes Werkstück 12 c abgeführt und mit dem anderen Spreizdorn 11 a das neue Werkstück 12 a aufgenommen werden. Grundplatte 1 und Werkstückladevorrichtung 10 können so aufeinander abgestimmt werden, daß eine automatische Werkstückzu- und -abführung sowie das Schleifen des jeweils eingespannten Werkstückes erfolgen kann. Die für die Schleifeinheit mit mehreren Schleifspindeln vorhandenen Maschinen- und Steuerungsmittel können mit wenig Aufwand auch für die Werkstückladeeinrichtung mit verwendet werden.
Die Figuren 3 und 4 zeigen ein anderes Ausführungsbeispiel.1 and 2 is a grinding unit which has the four grinding spindles 2, 3, 4 and 5 mounted in the four corners of a square base plate 1 rotatable about the axis A in such a way that a rotation of the Base plate is brought to the workpiece by 90 o each time a different grinding wheel 6, 7, 8 or 9 in the basic grinding position.
The grinding process takes place in the usual way and therefore does not have to be described in more detail. The principle of the present invention is illustrated in FIG. 2. Instead of the grinding spindle 4, the workpiece loading unit 10 is mounted on the base plate 1. It is also rotatable and has the two expanding mandrels 11a and 11b, which run at right angles to one another and can be inserted into the bore of a workpiece 12 and accommodate it. During the milling unit is in grinding position to the clamped and to be ground workpiece 12 b 5, can with the workpiece loading means a finished ground, b before in 90 ° rotational position of the base plate 1 from the chuck 13 with the expanding mandrel 11 taken from workpiece 12 c discharged, and with the other expanding mandrel 11 a, the new workpiece 12 a are added. Base plate 1 and workpiece loading device 10 can be coordinated with one another in such a way that automatic workpiece feeding and removal as well as grinding of the clamped workpiece can take place. The machine and control means available for the grinding unit with several grinding spindles can also be used for the workpiece loading device with little effort.
Figures 3 and 4 show another embodiment.

Die Grundplatte 14 mit den beiden Schleifspindeln 15 und 16 ist linear verschiebbar, wie die Pfeile andeuten. Die Schleifspindel 16 ist durch die Werkstückladevorrichtung 17 ersetzt, welche zwei einander gegenüberliegende Spreizdorne 18 und 19 aufweist und um den Punkt B geschwenkt werden kann, sodaß eine Bestückungsstellung sowie eine übergabestellung eingenommen werden kann.
Grundplatte 14 und Werkstückladevorrichtung 17 werden aufeinander abgestimmt so gesteuert, daß der Schleifvorgang sowie die Werkstückzu- und -abführung automatisch vorgenommen werden kann. Die Übergabestellung ist durch das strichpunktiert dargestellte Werkstück 20 angedeutet.
Auch hier ist die Schleifeinheit sinnvoll mit einer Werkstückladevorrichtung so kombiniert, daß die vorhandenen Steuerelemente optimat für beide Funktionen ausgenutzt werden.The base plate 14 with the two grinding spindles 15 and 16 is linearly displaceable, as the arrows indicate. The grinding spindle 16 is replaced by the workpiece loading device 17, which has two mutually opposite expanding mandrels 18 and 19 and can be pivoted about the point B, so that an assembly position and a transfer position can be assumed.
Base plate 14 and workpiece loading device 17 are coordinated so that the grinding process and the workpiece feed and removal can be carried out automatically. The transfer position is indicated by the workpiece 20 shown in broken lines.
Here, too, the grinding unit is sensibly combined with a workpiece loading device in such a way that the existing control elements are optimally used for both functions.

Claims (3)

  1. A grinding machine comprising a grinding unit disposed on the machine bed and having grinding spindles (2-5, 15, 16), the position of the machine bed being capable to be changed by rotation and/or displacement such that for different grinding operations, the respectively required grinding spindle can become effective at the workpiece (12, 20) to be ground, characterized by that the grinding unit comprises, in addition to at least one grinding spindle, a workpiece charge and discharge device (10, 17), said charge and discharge device being composed of a rotary table having several workpiece receiving devices distributed over the periphery.
  2. A grinding machine according to claim 1, characterized by that the workpiece receiving devices are composed of split mandrels (11a, 11b, 18, 19) or collets and chucks to be introduced into a borehole of the workpiece (12) to be ground.
  3. A grinding machine according to claim 1 and/or claim 2, characterized by that the workpiece receiving devices are composed of collets and chucks clamping the workpiece to be ground on the outer diameter thereof.
EP91105464A 1990-05-15 1991-04-06 Grinding machine involving a grinding unit comprising one or more spindles disposed on a machine bed Expired - Lifetime EP0457016B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015554 1990-05-15
DE4015554A DE4015554A1 (en) 1990-05-15 1990-05-15 GRINDING MACHINE WITH A GRINDING UNIT ON THE MACHINE BED FOR ONE OR MULTIPLE GRINDING SPINDLES

Publications (2)

Publication Number Publication Date
EP0457016A1 EP0457016A1 (en) 1991-11-21
EP0457016B1 true EP0457016B1 (en) 1994-08-24

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EP91105464A Expired - Lifetime EP0457016B1 (en) 1990-05-15 1991-04-06 Grinding machine involving a grinding unit comprising one or more spindles disposed on a machine bed

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EP (1) EP0457016B1 (en)
AT (1) ATE110315T1 (en)
DE (2) DE4015554A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2114778B1 (en) * 1994-10-18 1999-01-16 Danobat IMPROVEMENTS IN HIGH SPEED GRINDERS FOR REACTION MOTOR ROTOR WINGS AND THE LIKE.
DE19800034C2 (en) * 1998-01-02 2001-03-22 Elb Schliff Werkzeugmaschinen Machine tool for processing tools from the group of grinding tools and milling cutters
DE19921785B4 (en) * 1999-05-11 2005-11-24 Erwin Junker Maschinenfabrik Gmbh Method for grinding convex running surfaces and outer diameters on shafts with at least one disk-shaped shaft section and grinding machine for carrying out the method
DE10009075C2 (en) 2000-02-25 2002-01-17 Walter Ag Grinding head and saw blade grinding machine with HF spindle
DE10235808B4 (en) * 2002-08-05 2009-08-20 Erwin Junker Maschinenfabrik Gmbh Method and device for grinding a rotationally symmetrical machine component provided with a longitudinal bore
ES2385652T3 (en) * 2005-02-14 2012-07-27 Klingelnberg Gmbh Device and procedure of soft machining of conical sprockets
CN103350386A (en) * 2013-07-30 2013-10-16 新乡亿威数控设备有限公司 Thrust bearing ring grinding machine
CN105773405A (en) * 2016-05-10 2016-07-20 苏州道众机械制造有限公司 Abrasive tool for changing machining precision
CN112247819B (en) * 2020-10-09 2022-08-19 无锡贝来钢管有限公司 Large-diameter thick-wall seamless steel pipe processing device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE820519C (en) * 1948-10-02 1951-11-12 Lorenz A G C Workpiece change on the turret arms using a special holder in the turret head
US3924355A (en) * 1973-01-19 1975-12-09 Youji Tatsumi Internal grinder
FR2275281A2 (en) * 1974-06-18 1976-01-16 Gerinte Noelle Programmed multi-head internal grinding machine - rotary indexed table carries set of different dia. grinding heads
DE2907282C2 (en) * 1979-02-24 1981-04-30 Reichmann & Sohn, Elektromaschinenfabrik, 7912 Weissenhorn Workpiece infeed and unloading device on machines for surface grinding
DE2907292A1 (en) * 1979-02-24 1980-08-28 Ruediger Paulmann Base in electric lamp packing - allows lamp to be tested without unpacking and has plastic transparent upper casing with top closure flap
DE3133488C3 (en) * 1981-08-25 1994-07-28 Walter Ag Program-controlled tool grinding machine

Also Published As

Publication number Publication date
ATE110315T1 (en) 1994-09-15
DE59102607D1 (en) 1994-09-29
EP0457016A1 (en) 1991-11-21
DE4015554A1 (en) 1991-11-21

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