DE2615482A1 - Two speed angle grinding machine tool - has one tapping from field winding of drive motor providing wide range of speed change - Google Patents
Two speed angle grinding machine tool - has one tapping from field winding of drive motor providing wide range of speed changeInfo
- Publication number
- DE2615482A1 DE2615482A1 DE19762615482 DE2615482A DE2615482A1 DE 2615482 A1 DE2615482 A1 DE 2615482A1 DE 19762615482 DE19762615482 DE 19762615482 DE 2615482 A DE2615482 A DE 2615482A DE 2615482 A1 DE2615482 A1 DE 2615482A1
- Authority
- DE
- Germany
- Prior art keywords
- tapping
- speed
- field winding
- machine tool
- drive motor
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/10—Commutator motors, e.g. repulsion motors
- H02P25/14—Universal motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
Für zwei Drehzahlbereiche ausgelegter Winkelschleifer Angle grinder designed for two speed ranges
Die Erfindung bezieht sich auf einen für zwei Drehzahlen ausgelegten Winkelschleifer.The invention relates to one designed for two speeds Angle grinder.
Es ist bekannt, daß Winkelschleifer beim Arbeitsvorgang Schleifen mit hohen Drehzahlen und damit mit entsprechend hohen Leistungen betrieben werden müssen, wogegen zum Polieren und Bürsten vergleichsweise eine niedrige Drehzahl und damit auch eine entsprechend geringere Leistung genügt.It is known that angle grinders grind in the work process be operated at high speeds and thus with correspondingly high performance must, whereas for polishing and brushing a comparatively low speed and thus a correspondingly lower performance is sufficient.
Um diesen Anforderungen gerecht zu werden, ist es bekannt, Winkelschleifer mit einem geeigneten Umschaltgetriebe für zwei Grunddrehzahlen auszurüsten. Ein derartiges Umschaltgetriebe ist jedoch verhalellismäßig aufwendig und ermöglicht im allgemeinen nicht ohne weiteres den den beiden Arbeitsvorgängen gerecht werdenden Drehzahlsprung, Es ist daher Aufgabe der Erfindung, bei Mehrgang-Elektrowerkzeugen mit wirtschaftlichen Mitteln einen möglichst großen Drehzahlsprung zu erzielen.In order to meet these requirements, it is known to use angle grinders equipped with a suitable gearbox for two basic speeds. A such a gearbox however, it is relatively expensive and generally does not readily allow the two operations It is therefore an object of the invention, in multi-speed power tools to achieve as large a speed jump as possible with economic means.
Die Aufgabe ist dadurch gelöst, daß erfindungsgemäß die Feldwicklung des Antriebsmotors wenigstens eine Anzapfung enthalt und in die unmittelbare Zuleitung zur Feldwicklung mindestens eine Diode einschaltbar ist.The object is achieved in that, according to the invention, the field winding of the drive motor contains at least one tap and into the immediate supply line at least one diode can be switched on for the field winding.
Die Erfindung wird im nachstehenden anhand eines Schaltungsbeispiels näher erläutert.The invention is illustrated below with the aid of a circuit example explained in more detail.
Wie dem Schaltbild zu entnehmen ist, besitzt die in zwei 7!weite aufgeteilte, in je einer Zuleitung 1,2 Zum Anker 3 des Antriebsmotors, z.B. eines Winkelschleifers, liegende Feldwicklung 4,5 je Wicklungszweig eine Anzapfung 6,7.As can be seen in the circuit diagram, the divided into two 7! in one feed line 1,2 to armature 3 of the drive motor, e.g. an angle grinder, lying field winding 4.5 one tap 6.7 per winding branch.
Die zuleitungen 8,9 zu den Wicklungsanzapfungen sind zu einem Umschalter 10 gefiihrt, desgleichen die Wicklungsanschlüsse 11,12. In die unmittelbare Zuleitung 11 zur Feldwicklung 4 ist beim Ausführungsbeispiel eine Diode 13 geschaltet.The leads 8,9 to the winding taps are to a changeover switch 10, as well as the winding connections 11, 12. In the immediate supply line 11 to the field winding 4, a diode 13 is connected in the embodiment.
Der Umschalter 10 ist an einen Rauptschalter 14 für den Anschluß des Elektrowerkzeugs an das speisende Netz angeschlossen, zwischen dessen Pole eine Entstörkondensator 15 gelegt ist. Erforderlichenfalls kann der Diode 13 eine weitere Diode in Serie geschaltet sein.The switch 10 is connected to a main switch 14 for the connection of the Power tool connected to the supply network, between its poles a Suppression capacitor 15 is placed. If necessary, the diode 13 can have another Diode be connected in series.
Befindet sich der TTmschalter 10-in der gezeichneten Stellung, dann liegt die Diode 13 in Reihe mit dem Wicklungszweig 4 der Feldwicklung. Das bedeutet die Elimination einer Halbwelle der speisenden Wechselspannung und damit eine entsprechende Drehzahl- und Leistungsverringerung des Motors.If the TTm switch 10- is in the position shown, then the diode 13 is in series with the winding branch 4 of the field winding. That means the elimination of a half-wave of the feeding AC voltage and thus a corresponding one Speed and power reduction of the engine.
Dieser läuft daher mit seiner unteren Drehzahl, wie dies für die Arbeitsgänge Polieren und Bürsten erforderlich bzw.This therefore runs at its lower speed, as is the case for the operations Polishing and brushing required or
vorgesehen ist.is provided.
Für den Arbeitsvorgang-Schleifen wird der Umschalter 10 in die gestrichelt gezeichnete Lage gebracht. Dadurch werden einmal die Anzapfungen 6,7 der Erregerwicklung 4,5 wirksam und die Diode 13 unwirksam. Die Folge ist eine entsprechende Drehzahl- und Leistungserhöhung des Motors.The changeover switch 10 is shown in dashed lines for the work process loops drawn situation brought. As a result, the taps 6.7 of the field winding are once 4.5 effective and the diode 13 ineffective. The result is a corresponding speed and power increase of the engine.
Die Maßnahmen, durch Feldanzapfung eine Erhöhung der Drehzahl zu erzielen sowie mittels einer Diode zwecks Drehzahlverringerung eine Halbwelle der speisenden Wechselspannung auszusieben, sind jeweils für sich dem Fachmann geläufig.The measures to achieve an increase in speed by tapping the field as well as a half-wave of the feeding one by means of a diode for the purpose of speed reduction The person skilled in the art is familiar with filtering out alternating voltage.
Patentansprüche: Patent claims:
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762615482 DE2615482A1 (en) | 1976-04-09 | 1976-04-09 | Two speed angle grinding machine tool - has one tapping from field winding of drive motor providing wide range of speed change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762615482 DE2615482A1 (en) | 1976-04-09 | 1976-04-09 | Two speed angle grinding machine tool - has one tapping from field winding of drive motor providing wide range of speed change |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2615482A1 true DE2615482A1 (en) | 1977-10-20 |
Family
ID=5974920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19762615482 Ceased DE2615482A1 (en) | 1976-04-09 | 1976-04-09 | Two speed angle grinding machine tool - has one tapping from field winding of drive motor providing wide range of speed change |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2615482A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2779586A1 (en) * | 1998-06-05 | 1999-12-10 | Fhp Motors Gmbh | DEVICE FOR ADJUSTING THE ROTATION SPEED OF A SWITCHING MOTOR WITH SERIAL EXCITATION OR SHUNT EXCITATION |
| DE102013202953A1 (en) * | 2013-02-22 | 2014-09-11 | Robert Bosch Gmbh | Hand tool |
-
1976
- 1976-04-09 DE DE19762615482 patent/DE2615482A1/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2779586A1 (en) * | 1998-06-05 | 1999-12-10 | Fhp Motors Gmbh | DEVICE FOR ADJUSTING THE ROTATION SPEED OF A SWITCHING MOTOR WITH SERIAL EXCITATION OR SHUNT EXCITATION |
| DE102013202953A1 (en) * | 2013-02-22 | 2014-09-11 | Robert Bosch Gmbh | Hand tool |
| US9259831B2 (en) | 2013-02-22 | 2016-02-16 | Robert Bosch Gmbh | Hand power tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE4333064A1 (en) | Brake circuit for a universal motor | |
| DE3710619C2 (en) | ||
| DE3802419A1 (en) | BRAKE CONTROL FOR UNIVERSAL MOTORS | |
| DE2615482A1 (en) | Two speed angle grinding machine tool - has one tapping from field winding of drive motor providing wide range of speed change | |
| DE4128803A1 (en) | Static frequency changer with rectifier connected to AC mains - has DC voltage intermediate circuit connected to rectifier and inverters mounted on cooler | |
| DE2635749A1 (en) | TURNING HEAD MACHINING DEVICE | |
| DE656481C (en) | Electromotive direct current drive for machine tools | |
| DE721908C (en) | Universal motor that can be connected to various voltages | |
| DE675259C (en) | Device for transmission, in particular remote transmission of movements by means of alternating currents of variable frequency | |
| DE2211077A1 (en) | HAND GRINDER | |
| DE2847549A1 (en) | Electrical tool with dust-removing fan - has fan motor switched by both triac and by tools main switch | |
| DE1802917A1 (en) | Electric drive motor for washing machines | |
| DE758668C (en) | Excitation from self-excited alternators | |
| DE712808C (en) | Method for speed control of at least two electric motors to drive fans | |
| DE899053C (en) | Call and signal machine for telephone systems | |
| AT111489B (en) | Device for the automatic control of switching processes or the like. | |
| DE871920C (en) | Adjustable electric drive | |
| DE571658C (en) | Control device for asynchronous motors for calender drives | |
| DE102004025231A1 (en) | Hand tool, which receives its operating voltage from a power supply unit | |
| DE903248C (en) | Mechanical converter, especially for small powers | |
| DE10048083C1 (en) | Control method for universal electric motor uses 2 equal groups of half-waves with phase angle of one group shifted beyond voltage maximum and phase angle of other group corresponding reduced or increased | |
| DE588227C (en) | Arrangement with mechanically independent three-phase motors, the rotors of which are electrically connected | |
| DE3014530A1 (en) | Pre-switching device for aquarium pump motor - incorporates capacitor or coil in series with stator winding | |
| DE691083C (en) | Starting circuit for Leonard units | |
| DE367963C (en) | Method for operating machine tools, e.g. B. punching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OF | Willingness to grant licences before publication of examined application | ||
| OD | Request for examination | ||
| 8131 | Rejection |