DE1074442B - Balancing device for rotating and wearing NX produces, for example, sliding disks - Google Patents

Balancing device for rotating and wearing NX produces, for example, sliding disks

Info

Publication number
DE1074442B
DE1074442B DE1958H0033393 DEH0033393A DE1074442B DE 1074442 B DE1074442 B DE 1074442B DE 1958H0033393 DE1958H0033393 DE 1958H0033393 DE H0033393 A DEH0033393 A DE H0033393A DE 1074442 B DE1074442 B DE 1074442B
Authority
DE
Germany
Prior art keywords
annular groove
smaller
imbalance
section
compensate
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.)
Pending
Application number
DE1958H0033393
Other languages
German (de)
Inventor
Hofmann Sees haupt Dionys
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE1958H0033393 priority Critical patent/DE1074442B/en
Priority to US813893A priority patent/US2958165A/en
Priority to GB16970/59A priority patent/GB856476A/en
Priority to FR795270A priority patent/FR1237153A/en
Priority to CH8149159A priority patent/CH378068A/en
Publication of DE1074442B publication Critical patent/DE1074442B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/16Bushings; Mountings
    • B24D5/165Balancing means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0032Arrangements for preventing or isolating vibrations in parts of the machine
    • B23Q11/0035Arrangements for preventing or isolating vibrations in parts of the machine by adding or adjusting a mass, e.g. counterweights
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/32Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
    • F16F15/34Fastening arrangements therefor
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00Testing static or dynamic balance of machines or structures
    • G01M1/30Compensating imbalance
    • G01M1/36Compensating imbalance by adjusting position of masses built-in the body to be tested
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/21Elements
    • Y10T74/211Eccentric
    • Y10T74/2114Adjustable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Testing Of Balance (AREA)

Description

DEUTSCHESGERMAN

Es ist bekannt, daß die Laufruhe von scheibenförmigen rotierenden Werkzeugen, z. B. von Schleifscheiben, Polierscheiben, Schmirgelscheiben od. dgl., und damit die Belastung der Lager sowie die Qualität der mit diesen Scheiben durchzuführenden Arbeiten von dem exakten Auswuchten der Werkzeuge abhängig ist. Aus diesem Grund werden z. B. Schleifscheiben vom Herstellerwerk ausgewuchtet, d. h., die Lieferunwucht wird beseitigt. Durch die Abnutzung der Werkzeuge treten jedoch neue Unwuchten, d. h. die Betriebsunwuchten, auf, die bei den hohen Drehzahlen _zu einer erheblichen Belastung und Abnutzung der Hauptlager der Schleifmaschine, verbunden mit einem nicht unerheblichen Energieverschleiß, führen. Wenn an einer Schleifscheibe beim Umlauf Unwuchtkräftepaare auftreten, zeigt diese im Rahmen ihres Lagerspieles ein Flattern, welches das Arbeiten mit der Schleifscheibe beeinträchtigt.It is known that the smoothness of disc-shaped rotating tools, e.g. B. of grinding wheels, Polishing discs, emery discs or the like, and thus the load on the bearings and the quality the work to be carried out with these disks depends on the exact balancing of the tools is. For this reason z. B. grinding wheels balanced by the manufacturer, d. h., the Delivery imbalance is eliminated. However, as the tools wear out, new imbalances occur, i. H. the operational imbalances, which at the high speeds cause considerable stress and wear the main bearings of the grinding machine, combined with a not inconsiderable amount of energy wear. If pairs of imbalance forces occur on a grinding wheel during rotation, this shows within the scope of its Bearing play a flutter, which affects working with the grinding wheel.

Zum Einspannen der Schleifscheiben werden unter anderem auf den beiden Stirnseiten derselben angeordnete Flansche verwendet, in denen eine Ringnut vorgesehen ist. Diese Ringnut dient zur Aufnahme von Ausgleichsgewichten, welche der Behebung der vor der Inbetriebnahme der Schleifscheibe bereits festgestellten Unwucht dienen. Die während des Betriebes durch Abnutzung der Schleifscheibe erneut auftretende Betriebsunwucht ist bisher durch Verschieben der ursprünglich eingesetzten Gewichte beseitigt worden. Dies ist jedoch ziemlich schwierig, da die zum Beheben der Lieferunwucht dienenden verhältnismäßig großen Ausgleichsgewichte zum Ausgleich der nachträglich sich ergebenden sogenannten Betriebsunwucht zu grob sind. Vor allem aber führt das Verschieben eines Gewichtes an die neue Ausgleichsstelle dazu, daß es an der Stelle, an der es sich bisher befand, an Gewicht fehlt. Dies hat zwangläufig zur Folge, daß längere Zeit herumprobiert werden muß, bis das Gewicht an der richtigen Stelle sitzt.To clamp the grinding wheels, among other things, they are arranged on the two end faces Flanges used in which an annular groove is provided. This ring groove is used to accommodate Balancing weights, which the remedy of the already determined before the grinding wheel was put into operation Serve imbalance. The one that occurs again during operation due to wear and tear on the grinding wheel Operational imbalance has so far been eliminated by shifting the weights originally used been. However, this is quite difficult because the ones used to correct the delivery imbalance are relatively difficult large counterweights are too coarse to compensate for the so-called operational imbalance that subsequently occurs. Above all, however, the shifting leads a weight to the new compensation point so that it is at the point where it was previously, lacks weight. This inevitably means that you have to try things out for a long time, until the weight is in the right place.

Es wurde auch bereits vorgeschlagen, Hohlringe mit Kammern zu verwenden, in die insbesondere auch zum Ausgleich der Betriebsunwucht Bleikugeln eingelegt werden. Derartige Hohlringe sind jedoch in der Herstellung verhältnismäßig kompliziert und kostspielig. Außerdem dürften die eingelegten Bleikugeln sich während des Betriebes verhältnismäßig rasch abreiben. Aus diesen Gründen haben diese Anordnungen bisher in der Praxis keine weitere Verbreitung gefunden. Es wäre denkbar — und dies wird mit Rücksicht auf die vorstehenden Ausführungen zum Stand der Technik als potentieller Stand der Technik erachtet —, die Betriebsunwucht durch Einsetzen kleiner Zusatzgewichte in die übliche Flanschnut zu beseitigen. Dann wäre allerdings deren Feineinstellung durch die großen Gewichte behindert.It has also already been proposed to use hollow rings with chambers in which in particular lead balls are inserted to compensate for the operational imbalance. Such hollow rings are, however, in the Relatively complex and expensive to manufacture. In addition, the inserted lead balls should wear off relatively quickly during operation. For these reasons, these arrangements so far found no further distribution in practice. It would be conceivable - and this will come with Consideration of the above statements on the state of the art as potential state of the art considers - to reduce the operational imbalance by inserting small additional weights in the usual flange groove remove. Then, however, their fine adjustment would be hindered by the large weights.

Auswuchteinrichtung für rotierendeBalancing device for rotating

und sich abnutzende Werkzeuge,and wearing tools

z.B. Schleifscheibene.g. grinding wheels

Anmelder:Applicant:

Dionys Hofmann,Dionys Hofmann,

Seeshaupt, Bahnhofstr. 56Seeshaupt, Bahnhofstr. 56

Dionys Hofmann, Seeshaupt,
ist als Erfinder genannt worden
Dionys Hofmann, Seeshaupt,
has been named as the inventor

Gemäß der Erfindung wird nun eine Auswuchteinrichtung der in Rede stehenden Art vorgeschlagen, bei der mindestens einer der beiden Flansche neben der üblichen Ringnut eine zweite konzentrische sowie hinsichtlich Durchmesser und Querschnitt kleinere Ringnut aufweist, in der mindestens zwei zum Ausgleich der periodisch entstehenden Betriebsunwucht bestimmte Zusatzgewichte verschiebbar befestigt sind.According to the invention, a balancing device of the type in question is now proposed at the at least one of the two flanges in addition to the usual annular groove a second concentric and with respect to Has diameter and cross-section smaller annular groove, in which at least two to compensate the periodically occurring operational unbalance certain additional weights are attached to be displaceable.

Gemäß einer bevorzugten Ausführungsform des Gegenstandes der Erfindung verhält sich der Querschnitt der kleineren Ringnut zu dem der größeren Ringnut wie 1 :2 bis 1 :10, vorzugsweise wie 1 :3 bis 1 :5.
Bei der Auswuchteinrichtung gemäß der Erfindung wird also die Lieferunwucht der Schleifscheibe wie bisher durch entsprechende Anordnung größerer Ausgleichsgewichte in der äußeren, breiteren Ringnut beseitigt. Die Betriebsunwuchten werden periodisch durch Verschieben der kleineren Ausgleichsgewichte in der erfindungsgemäßen inneren Ringnut, die einen kleineren Querschnitt aufweist, ausgeglichen. Es ist nicht mehr erforderlich, daß die größeren Ausgleichsgewichte bei jedem Nachwuchten verschoben werden. Die kleineren Ausgleichsgewichte können unabhängig von den größeren Ausgleichsgewichten über, den gesamten Umfang der inneren Ringnut herum verschoben werden, ohne daß sie dabei von den größeren Ausgleichsgewichten behindert werden.
According to a preferred embodiment of the subject matter of the invention, the ratio of the cross section of the smaller annular groove to that of the larger annular groove is from 1: 2 to 1:10, preferably from 1: 3 to 1: 5.
In the balancing device according to the invention, the delivery unbalance of the grinding wheel is thus eliminated, as before, by a corresponding arrangement of larger counterweights in the outer, wider annular groove. The operational imbalances are periodically compensated for by moving the smaller counterweights in the inner annular groove according to the invention, which has a smaller cross section. It is no longer necessary for the larger counterweights to be shifted with each rebalancing. The smaller counterweights can be moved independently of the larger counterweights over the entire circumference of the inner ring groove without being hindered by the larger counterweights.

In den Zeichnungen sind bevorzugte Ausführungsformen des Gegenstandes der Erfindung dargestellt. Es zeigtPreferred embodiments of the subject matter of the invention are shown in the drawings. It shows

Fig. 1 eine Stirnansicht einer Schleifscheibe mit Aufspannflansch gemäß der Erfindung,Fig. 1 is an end view of a grinding wheel with a mounting flange according to the invention,

Fig. 2 einen Schnitt der Schleifscheibe gemäß Fig. 1,FIG. 2 shows a section of the grinding wheel according to FIG. 1,

Fig. 3 einen Schnitt einer abgewandelten Ausführungsform. 3 shows a section of a modified embodiment.

In die Mittelbohrung einer Schleifscheibe 1 ist, wie Fig. 2 und 3 zeigen, ein Aufspannflansch 2 mit einerIn the central bore of a grinding wheel 1, as shown in FIGS. 2 and 3, a mounting flange 2 with a

909 727/60909 727/60

zylindrischen Hülse 3 eingesteckt. Die Schleifscheibe 1 ist von einer auf die Hülse 3 aufgeschraubten Mutter 4 gesichert. In die Stirnseite des Flansches 2 ist eine schwalbenschwanzförmige Ringnut 5 mit größerem Querschnitt und eine schwalbenschwanzförmige Ringnut 6 mit kleinerem Querschnitt eingearbeitet. In der kleineren Ringnut befinden sich, wie Fig. 1 zeigt, zwei kleinere Ausgleichsgewichte 8, die mittels einer Schraube in der Ringnut festgeklemmt werden können. In der größeren Ringnut 5 sind zwei größere Ausgleichsgewichte 7 und 9, die ebenfalls mit einer Schraube in dieser Ringnut festgeklemmt werden können.cylindrical sleeve 3 inserted. The grinding wheel 1 is secured by a nut 4 screwed onto the sleeve 3 secured. In the end face of the flange 2 there is a dovetail-shaped annular groove 5 with a larger size Cross-section and a dovetail-shaped annular groove 6 incorporated with a smaller cross-section. In the smaller annular groove are, as Fig. 1 shows, two smaller counterweights 8, which by means of a Screw can be clamped in the ring groove. In the larger ring groove 5 there are two larger counterweights 7 and 9, which can also be clamped with a screw in this ring groove.

Die Lieferunwucht der Schleifscheibe wird beseitigt, indem die Ausgleichsgewichte 7 und 9 in der RingnutS verschoben werden. Zum Ausgleich der durch das Aufspannen und die Abnutzung der Schleifscheibe neu auftretenden Betriebsunwucht werden periodisch die kleineren Ausgleichsgewichte 8 in der kleineren Ringnut 6 verschoben.The delivery imbalance of the grinding wheel is eliminated by placing the counterweights 7 and 9 in the annular groove S. be moved. To compensate for the clamping and wear of the grinding wheel If there is a new operating unbalance, the smaller counterweights 8 are periodically in the smaller one Ring groove 6 moved.

Gemäß der Darstellung in Fig. 3 enthält die die Schleifscheibe 1 sichernde Mutter 4' ebenfalls mindestens eine Ringnut 5, in der sich ebenfalls Ausgleichsgewichte 7 und 9 befinden. Auf diese Weise wird ein dynamisches sowie momentenfreies Auswuchten der Schleifscheibe ermöglicht. Wenn den Benutzern der Schleifscheiben dynamische Auswuchtmaschinen zur Verfügung stehen, so daß die Schleifscheiben laufend nachgewuchtet werden können, enthält die Mutter 4' neben der größeren Ringnut 5 noch eine kleinere Ringnut 6.According to the illustration in FIG. 3, the nut 4 'securing the grinding wheel 1 also contains at least one an annular groove 5, in which there are also counterweights 7 and 9 are located. In this way, dynamic and torque-free balancing is achieved the grinding wheel allows. If the users of the grinding wheels use dynamic wheel balancers are available so that the grinding wheels can be continuously rebalanced contains the nut 4 'has a smaller annular groove 6 in addition to the larger annular groove 5.

Claims (2)

PatentANSPBücHE:PATENT APPLICATIONS: 1. Auswuchteinrichtung für rotierende und sich abnutzende Werkzeuge, z. B. Schleifscheiben, mit insbesondere beidseits des Werkzeuges und in den Stirnseiten der Flansche angeordneter ring- sowie schwalbenschwanzförmiger Nut zur Aufnahme zum Ausgleich der Lieferunwucht dienender Verstellgewichte, wobei die durch die Abnutzung der Scheibe periodisch von neuem entstehende Betriebsunwucht durch kleinere sowie gleichfalls mittels Ringnut am Flansch verschiebbar befestigte Zusatzgewichte ausgleichbar ist, dadurch gekennzeichnet, daß mindestens einer der beiden Flansche (2, 4') neben der üblichen (5) eine zweite konzentrische sowie hinsichtlich Durchmesser und Querschnitt kleinere Ringnut (6) aufweist, in der zwei zum Ausgleich der periodisch entstehenden Betriebsunwucht bestimmte Zusatzgewichte (8) verschiebbar befestigt sind.1. Balancing device for rotating and wearing tools, e.g. B. grinding wheels with in particular on both sides of the tool and in the end faces of the flanges arranged ring and dovetail groove to accommodate adjustment weights used to compensate for the delivery imbalance, the operating imbalance that occurs periodically anew as a result of the wear and tear of the disc Slidably attached to the flange by smaller ones as well as by means of an annular groove Additional weights can be compensated, characterized in that at least one of the two Flanges (2, 4 ') in addition to the usual (5) a second concentric as well as diameter and Cross-section has smaller annular groove (6) in which two to compensate for the periodically arising Operating unbalance certain additional weights (8) are slidably attached. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sich der Querschnitt der kleineren (6) zu dem der größeren (5) Ringnut wie 1:2 bis 1:10, vorzugsweise wie 1:3 bis 1:5, verhält. 2. Device according to claim 1, characterized in that the cross section of the the smaller (6) to that of the larger (5) annular groove as 1: 2 to 1:10, preferably as 1: 3 to 1: 5. In Betracht gezogene Druckschriften:
Französische Patentschrift Nr. 492 133;
USA.-Patentschriften Nr. 2 097 894, 817 462;
Zeitschrift »Werkstattstechnik und Maschinenbau«, 1957, S. 69 bis 73 und 182 bis 184.
Considered publications:
French Patent No. 492 133;
U.S. Patent Nos. 2,097,894, 817,462;
Journal "Werkstattstechnik und Maschinenbau", 1957, pp. 69 to 73 and 182 to 184.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings I 909727/60 1.60I 909727/60 1.60
DE1958H0033393 1958-05-24 1958-05-24 Balancing device for rotating and wearing NX produces, for example, sliding disks Pending DE1074442B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE1958H0033393 DE1074442B (en) 1958-05-24 1958-05-24 Balancing device for rotating and wearing NX produces, for example, sliding disks
US813893A US2958165A (en) 1958-05-24 1959-05-18 Balancing device
GB16970/59A GB856476A (en) 1958-05-24 1959-05-19 Balancing device for rotary tools subject to wear
FR795270A FR1237153A (en) 1958-05-24 1959-05-22 Balancing device for rotating tools subject to wear
CH8149159A CH378068A (en) 1958-05-24 1959-12-04 Method and mounting flange for balancing disc-shaped tools

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1958H0033393 DE1074442B (en) 1958-05-24 1958-05-24 Balancing device for rotating and wearing NX produces, for example, sliding disks
CH8149159A CH378068A (en) 1958-05-24 1959-12-04 Method and mounting flange for balancing disc-shaped tools

Publications (1)

Publication Number Publication Date
DE1074442B true DE1074442B (en) 1960-01-28

Family

ID=25738549

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1958H0033393 Pending DE1074442B (en) 1958-05-24 1958-05-24 Balancing device for rotating and wearing NX produces, for example, sliding disks

Country Status (5)

Country Link
US (1) US2958165A (en)
CH (1) CH378068A (en)
DE (1) DE1074442B (en)
FR (1) FR1237153A (en)
GB (1) GB856476A (en)

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DE3930299A1 (en) * 1989-09-11 1991-03-14 Hofmann Gmbh & Co Kg Maschinen METHOD AND DEVICE FOR BALANCING ON A GRINDING WHEEL
DE4334244A1 (en) * 1993-10-07 1995-04-13 Schenck Ag Carl Method and device for balancing different system unbalances in the balancing of rotors having asymmetrical mass distribution
US6640704B2 (en) 2000-08-10 2003-11-04 Heidelberger Druckmaschinen Ag Method and device for balancing rotating bodies
DE10305714A1 (en) * 2003-02-12 2004-08-26 Bayerische Motoren Werke Ag Impact chuck for dynamic balancing of components, especially motor vehicle drive shafts, has a projection that extends from a base body into a carrier for the component to be balanced
DE102007013899A1 (en) * 2007-03-20 2008-09-25 Oc Oerlikon Balzers Ag Color wheel with individual balancing masses along a guide
US8228626B2 (en) 2007-03-20 2012-07-24 Oerlikon Trading Ag, Trubbach Color wheel with individual balancing masses along a guide

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US5613408A (en) * 1992-05-21 1997-03-25 Eti Technologies Inc. Weight compensating method and apparatus
US5592858A (en) * 1992-05-21 1997-01-14 Eti Technologies Inc. Weight compensating method and apparatus
US5605078A (en) * 1992-05-21 1997-02-25 Eti Technologies Inc. Weight compensating method and apparatus
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US5746647A (en) * 1996-11-12 1998-05-05 China Grinding Wheel Corporation Sleeve flange type mounting device for mounting a grinding wheel on a spindle of a grinding machine
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DE102007044523A1 (en) * 2007-09-18 2009-03-19 Man Diesel Se High rotation speed axial-bearing arrangement, has axial-bearing band exhibiting mass distribution in radial direction with respect to bearing surface of band, where bending moment works against deformation of bearing surface
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3930299A1 (en) * 1989-09-11 1991-03-14 Hofmann Gmbh & Co Kg Maschinen METHOD AND DEVICE FOR BALANCING ON A GRINDING WHEEL
DE4334244A1 (en) * 1993-10-07 1995-04-13 Schenck Ag Carl Method and device for balancing different system unbalances in the balancing of rotors having asymmetrical mass distribution
US6640704B2 (en) 2000-08-10 2003-11-04 Heidelberger Druckmaschinen Ag Method and device for balancing rotating bodies
DE10305714A1 (en) * 2003-02-12 2004-08-26 Bayerische Motoren Werke Ag Impact chuck for dynamic balancing of components, especially motor vehicle drive shafts, has a projection that extends from a base body into a carrier for the component to be balanced
DE10305714B4 (en) * 2003-02-12 2014-04-30 Bayerische Motoren Werke Aktiengesellschaft force feed
DE102007013899A1 (en) * 2007-03-20 2008-09-25 Oc Oerlikon Balzers Ag Color wheel with individual balancing masses along a guide
US8228626B2 (en) 2007-03-20 2012-07-24 Oerlikon Trading Ag, Trubbach Color wheel with individual balancing masses along a guide
DE102007013899B4 (en) 2007-03-20 2024-07-11 Oerlikon Trading Ag, Trübbach Method for balancing a color wheel with individual balancing masses along a guide

Also Published As

Publication number Publication date
FR1237153A (en) 1960-11-23
CH378068A (en) 1964-05-31
US2958165A (en) 1960-11-01
GB856476A (en) 1960-12-14

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