EP0218187B1 - Process and arrangement for the drive control of various successively operating grinding wheels - Google Patents
Process and arrangement for the drive control of various successively operating grinding wheels Download PDFInfo
- Publication number
- EP0218187B1 EP0218187B1 EP86113530A EP86113530A EP0218187B1 EP 0218187 B1 EP0218187 B1 EP 0218187B1 EP 86113530 A EP86113530 A EP 86113530A EP 86113530 A EP86113530 A EP 86113530A EP 0218187 B1 EP0218187 B1 EP 0218187B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- grinding wheels
- grinding wheel
- drive control
- wheels
- 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
- 238000000034 method Methods 0.000 title claims description 7
- 230000002093 peripheral effect Effects 0.000 description 13
- 229910052582 BN Inorganic materials 0.000 description 10
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 10
- 239000010432 diamond Substances 0.000 description 6
- 229910003460 diamond Inorganic materials 0.000 description 6
- 239000000945 filler Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920001342 Bakelite® Polymers 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
-
- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/10—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving electrical means
-
- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
Definitions
- the invention relates to a method and an arrangement for controlling the drive of grinding wheels, which are provided with a marking for a signal transmitter.
- grinding wheels In grinding technology, different types of grinding wheels are used on the same machine. These grinding wheels are either so-called conventional grinding wheels with corundum or silicon carbide in a ceramic or Bakelite bond or grinding wheels with diamond or cubic-crystalline boron nitride. Grinding wheels with diamond or cubic-crystalline boron nitride are fundamentally different from conventional grinding wheels, because with conventional grinding wheels the entire body of the grinding wheel consists of abrasive and bond, while with grinding wheels with diamond or cubic-crystalline boron nitride a distinction must be made between the grinding surface the abrasive, the bond and optionally filler materials and on the other hand the base body on which this abrasive coating is applied.
- the base body generally consists of metal, in particular steel, aluminum or bronze, or of a metal powder-phenolic resin molding compound or of a phenolic resin with non-metallic fillers.
- a safety device for monitoring the peripheral speed of a grinding wheel which has control mechanisms for stopping the drive, for example when the grinding wheel diameter has decreased to a predetermined value due to a displacement or the peripheral speed of the grinding wheel has a predetermined limit value exceeds.
- the individual grinding wheels are provided with a signal transmitter, which emits pulses to a digital counter, which converts these individual pulses in relation to the speed into a voltage and thus acts on a relay of the motor.
- the invention is directed to the further development of machine tools with which grinding wheels of differing nature are successively used on a drive shaft, for example in order to machine different sections of a workpiece which consist of different metals.
- the object of the invention is to provide a method and an arrangement by which the drive of a grinding spindle is automatically controlled depending on the nature of the grinding wheel used in each case. To solve this, it is provided that the different properties of different types of grinding wheels used one after the other are scanned and sent via a signal transmitter into a data memory which controls the feed and / or feed speed of the grinding wheel via the drive.
- the optimal data for the quality of the grinding wheel are called up from a data block available in a numerical memory of the drive machine and entered into the machine control. This is made possible by the fact that the washer, which is provided with a marking, is placed on its material by a sensor after or before reaching its working position texture is scanned and the result of the scan is used as a decision aid for the retrieval of the grinding parameters from the machine processor.
- the scanning can be done optically.
- two grinding wheels 2 and 3 for machining a workpiece 12 are mounted on a grinding spindle 1, namely a conventional grinding wheel 2 consisting of corundum in a ceramic bond with non-metallic fillers and a grinding wheel 3 with cubic-crystalline boron nitride in a phenolic resin bond with non-metallic fillers , wherein the grinding surface of the grinding wheel 3 is applied to a base body 4 made of aluminum.
- Different optimal grinding conditions apply to both grinding wheels 2 and 3.
- disc 3 with cubic-crystalline boron nitride a peripheral speed of 80 m / s has been found to be optimal; when using the conventional grinding wheel 2, a peripheral speed of 45 m / s.
- a signal transmitter 5 scans the respective grinding wheel with a sensor 5 'or a sensing element 5' in order to determine whether the base body contains metallic components. This is done by an inductive signal transmitter 5. If this is the case, that is to say if a grinding wheel 3 with cubic-crystalline boron nitride is used, the grinding lining of which is arranged on a metallic base body, the drive machine 7 switches on the corresponding peripheral speed by means of a control the data memory 6, that is to say to a circumferential speed corresponding to the arrow 11 in the size of 80 m / s and, if appropriate, additionally the optimal feed and feed speed of the grinding wheel 3 with respect to the tool 12.
- the peripheral speed is switched to 45 m / s.
- the control provided can be implemented by using a signal transmitter 5 with an optical sensor 5 '.
- a pane 2 is provided with a marking 8 or a reflective layer 8, which can be designed, for example, in the manner of a staniol section, which, via the optical sensor 5 ', produces a corresponding signal in the data memory 6 for data provision.
- a special geometry of the grinding wheel in the area of the sensor 5 ' can be designed such that different signals are emitted.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
Die Erfindung betrifft ein Verfahren und eine Anordnung zur Steuerung des Antriebes von Schleifscheiben, die mit einer Markierung versehen sind für einen Signalgeber.The invention relates to a method and an arrangement for controlling the drive of grinding wheels, which are provided with a marking for a signal transmitter.
In der Schleiftechnik werden auf ein und derselben Maschine Schleifscheiben verschiedener Art eingesetzt. Bei diesen Schleifscheiben handelt es sich entweder um sogenannte konventionelle Schleifscheiben mit Korund oder Siliziumkarbid in keramischer oder bakelitischer Bindung oder um Schleifscheiben mit Diamant oder kubisch-kristallinem Bornitrid. Schleifscheiben mit Diamant oder kubisch-kristallinem Bornitrid sind grundsätzlich anders aufgebaut als die konventionellen Schleifscheiben, denn bei den konventionellen Schleifscheiben besteht der gesamte Schleifscheibenkörper aus Schleifmittel und Bindung, während bei Schleifscheiben mit Diamant oder kubisch-kristallinem Bornitrid zu unterscheiden ist zwischen dem Schleifbelag einerseits der aus dem Schleifmittel, der Bindung und gegebenenfalls Füllermaterialien besteht und andererseits dem Grundkörper, auf dem dieser Schleifbelag aufgebracht ist. Der Grundkörper besteht bei dieser Art von Schleifscheiben in der Regel aus Metall und zwar insbesondere aus Stahl, Aluminium oder Bronze, oder aus einer Metallpulver-Phenolharz-Preßmasse oder aus einem Phenolharz mit nichtmetallischen Füllstoffen.In grinding technology, different types of grinding wheels are used on the same machine. These grinding wheels are either so-called conventional grinding wheels with corundum or silicon carbide in a ceramic or Bakelite bond or grinding wheels with diamond or cubic-crystalline boron nitride. Grinding wheels with diamond or cubic-crystalline boron nitride are fundamentally different from conventional grinding wheels, because with conventional grinding wheels the entire body of the grinding wheel consists of abrasive and bond, while with grinding wheels with diamond or cubic-crystalline boron nitride a distinction must be made between the grinding surface the abrasive, the bond and optionally filler materials and on the other hand the base body on which this abrasive coating is applied. In this type of grinding wheel, the base body generally consists of metal, in particular steel, aluminum or bronze, or of a metal powder-phenolic resin molding compound or of a phenolic resin with non-metallic fillers.
Für konventionelle Schleifkörper bestehen Richtlinien über die maximal zulässige Umfangsgeschwindigkeit beim Schleifen. Für Schleifscheiben mit Diamant und kubisch-kristallinem Bornitrid gibt es solche Richtlinien bisher nicht. Es ist aber bekannt, daß bei Schleifscheiben mit Diamant oder kubisch-kristallinem Bornitrid die Sprenggeschwindigkeit und damit die maximal zu verwirklichende Umfangsgeschwindigkeit im Schleifprozeß von der Festigkeit des Grundkörpers abhängt. Diese Art von Schleifscheiben werden in der Praxis bereits mit Umfangsgeschwindigkeiten bis zu 150 m/s eingesetzt und die Tendenz geht zu noch höheren Umfangsgeschwindigkeiten. Bei konventionellen Schleifscheiben, insbesondere bei solchen mit keramischer Bindung, sind derartige Umfangsgeschwindigkeiten aufgrund ihres Bruchverhaltens nicht zu verwirklichen. Diese Schleifscheiben explodieren bei Umfangsgeschwindigkeiten, die für Schleifscheiben mit Diamant oder kubisch-kristallinem Bornitrid möglich sind.There are guidelines for conventional grinding wheels on the maximum permissible peripheral speed during grinding. Such guidelines have not yet existed for grinding wheels with diamond and cubic-crystalline boron nitride. However, it is known that in the case of grinding wheels with diamond or cubic-crystalline boron nitride, the blasting speed and thus the maximum circumferential speed to be achieved in the grinding process depends on the strength of the base body. In practice, this type of grinding wheel is already used at peripheral speeds of up to 150 m / s and the tendency is towards even higher peripheral speeds. In conventional grinding wheels, in particular those with a ceramic bond, such peripheral speeds cannot be achieved due to their breaking behavior. These grinding wheels explode at peripheral speeds that are possible for grinding wheels with diamond or cubic-crystalline boron nitride.
Für beide genannten Schleifscheibenarten, nämlich konventionelle Schleifscheiben und solche mit kubisch-kristallinem Bornitrid bestehen somit unterschiedliche Einsatzforderungen bzw. Einsatzmöglichkeiten der Schleifscheiben. Darüber hinaus bestehen aufgrund der unterschiedlichen Schleifeigenschaften der Schleifmittel unterschiedliche Forderungen und Möglichkeiten hinsichtlich anderer Schleifbedingungen nämlich insbesondere der Vorschubgeschwindigkeit und der Zustellgeschwindigkeit der Schleifscheiben.For both types of grinding wheels mentioned, namely conventional grinding wheels and those with cubic-crystalline boron nitride, there are therefore different application requirements and possible uses of the grinding wheels. In addition, due to the different grinding properties of the abrasives, there are different requirements and possibilities with regard to other grinding conditions, in particular the feed speed and the feed speed of the grinding wheels.
Bei Verwendung unterschiedlicher Schleifscheiben und insbesondere Schleifscheiben unterschiedlicher Schleifscheibenart auf ein und derselben Maschine müssen demzufolge unterschiedliche Einstellbedingungen berücksichtigt werden. Dies ist insbesondere dann gegeben, wenn Schleifscheiben unterschiedlicher Art auf der gleichen Schleifspindel montiert sind und durch ein Verfahren der Schleifspindel in bezug auf die Position des Werkstückes nacheinander zum Eingriff kommen oder wenn mehrere Schleifspindeln mit unterschiedlichen Schleifscheiben nacheinander zum Eingriff kommen, wie z.B. bei mehrspindeligen Schleifmaschinen, wobei die Schleifspindeln revolverkopfförmig im Arbeitsraum der Maschine angeordnet sein können.When using different grinding wheels and in particular grinding wheels of different grinding wheel types on the same machine, different setting conditions must therefore be taken into account. This is particularly the case when grinding wheels of different types are mounted on the same grinding spindle and are successively engaged by moving the grinding spindle in relation to the position of the workpiece, or when several grinding spindles with different grinding wheels come into engagement one after the other, e.g. in multi-spindle grinding machines, where the grinding spindles can be arranged in the shape of a turret in the working area of the machine.
Nach der US-PS 3 423 883 ist eine Sicherheitseinrichtung für die Überwachung der Umfangsgeschwindigkeit einer Schleifscheibe bekannt, die Kontrollmechanismen aufweist zum Stillsetzen des Antriebes beispielsweise wenn der Schleifscheibendurchmesser aufgrund eines Verschiebes bis auf einen vorher bestimmten Wert abgenommen hat oder die Umfangsgeschwindigkeit der Schleifscheibe einen vorgegebenen Grenzwert überschreitet. Dafür sind die einzelnen Schleifscheiben mit einem Signalgeber versehen, der Impulse abgibt auf einen Digitalzähler, welcher diese einzelnen Impulse im Verhältnis zu der Geschwindigkeit in eine Spannung umwandelt und dadurch auf ein Relais des Motors einwirkt.According to US Pat. No. 3,423,883, a safety device for monitoring the peripheral speed of a grinding wheel is known, which has control mechanisms for stopping the drive, for example when the grinding wheel diameter has decreased to a predetermined value due to a displacement or the peripheral speed of the grinding wheel has a predetermined limit value exceeds. For this purpose, the individual grinding wheels are provided with a signal transmitter, which emits pulses to a digital counter, which converts these individual pulses in relation to the speed into a voltage and thus acts on a relay of the motor.
Dadurch soll sichergestellt sein, daß ausschließlich solche Schleifscheiben auf Hochgeschwindigkeitsmaschinen zum Einsatz kommen, die Aufgrund ihrer Beschaffenheit auch tatsächlich für hohe Umfangsgeschwindigkeiten geeignet sind. Dafür sind bei der bekannten Anordnung aus Sicherheitsgründen nur diejenigen Scheiben mit einer Markierung versehen, die tatsächlich eine erhöhte Umfangsgeschwindigkeit erlauben, um sicherzustellen, daß bei einer fehlerhaften Bedienung der Antrieb ausgeschaltet bleibt oder auf einen geringeren Wert eingestellt bleibt.This is to ensure that only grinding wheels are used on high-speed machines that, due to their nature, are actually suitable for high peripheral speeds. For safety reasons, only those disks are provided with a marking in the known arrangement that actually allow an increased peripheral speed to ensure that the drive remains switched off or is set to a lower value in the event of incorrect operation.
Die Erfindung richtet sich auf die Weiterentwicklung von Werkzeugmaschinen mit denen zeitlich aufeinanderfolgend Schleifscheiben unterschiedlicher Beschaffenheit auf einer Antriebswelle nachfolgend zum Einsatz kommen, beispielsweise um verschiedene Abschnitte eines Werkstückes, die aus unterschiedlichen Metallen bestehen, zu bearbeiten.The invention is directed to the further development of machine tools with which grinding wheels of differing nature are successively used on a drive shaft, for example in order to machine different sections of a workpiece which consist of different metals.
Aufgabe der Erfindung ist es, ein Verfahren und eine Anordnung zu schaffen, durch die automatisch der Antrieb einer Schleifspindel gesteuert wird in Abhängigkeit von der Beschaffenheit der jeweils zum Einsatz kommenden Schleifscheibe. Zur Lösung dafür ist vorgesehen, daß die unterschiedlichen Beschaffenheiten verschiedenartiger nacheinander zum Einsatz kommender Schleifscheiben abgetastet und über einen Signalgeber in einen Datenspeicher gegeben werden, der über den Antrieb die Vorschub-und/oder Zustellgeschwindigkeit der Schleifscheibe steuert.The object of the invention is to provide a method and an arrangement by which the drive of a grinding spindle is automatically controlled depending on the nature of the grinding wheel used in each case. To solve this, it is provided that the different properties of different types of grinding wheels used one after the other are scanned and sent via a signal transmitter into a data memory which controls the feed and / or feed speed of the grinding wheel via the drive.
Dabei werden aus einem zur Verfügung stehenden Datenblock in einem numerischen Speicher der Antriebsmaschine die für die Beschaffenheit der Schleifscheibe optimalen Daten abgerufen und der Maschinensteuerung eingegeben. Dies wird dadurch ermöglicht, daß die mit einer Markierung versehene Schleibscheibe nach oder vor einem Erreichen ihrer Arbeitsposition von einem Sensor auf ihre Materialbeschaffenheit abgetastet wird und das Ergebnis der Abtastung als eine Entscheidungshilfe für den Abruf der Schleifparameter aus dem Maschinenprozessor genutzt wird.The optimal data for the quality of the grinding wheel are called up from a data block available in a numerical memory of the drive machine and entered into the machine control. This is made possible by the fact that the washer, which is provided with a marking, is placed on its material by a sensor after or before reaching its working position texture is scanned and the result of the scan is used as a decision aid for the retrieval of the grinding parameters from the machine processor.
Das Abtasten kann dabei optisch erfolgen. Bei einem Ausführungsbeispiel sind auf einer Schleifspindel 1 zwei Schleifscheiben 2 und 3 für die Bearbeitung eines Werkstückes 12 montiert, und zwar eine konventionelle Schleifscheibe 2 bestehend aus Korund in keramischer Bindung mit nichtmetallischen Füllstoffen sowie eine Schleifscheibe 3 mit kubisch-kristallinem Bornitrid in Phenolharzbindung mit nichtmetallischen Füllstoffen, wobei der Schleifbelag der Schleifscheibe 3 auf einem Grundkörper 4 aus Aluminium aufgebracht ist. Für beide Schleifscheiben 2 und 3 gelten unterschiedliche optimale Schleifbedingungen. Bei Verwendung der Scheibe 3 mit kubisch-kristallinem Bornitrid hat sich eine Umfangsgeschwindigkeit von 80 m/s als optimal herausgestellt; bei Verwendung der konventionellen Schleifscheibe 2 eine Umfangsgeschwindigkeit von 45 m/s.The scanning can be done optically. In one embodiment, two
Vor oder nach dem Einfahren der Schleifscheibe 3 - wie auch später der Schleifscheibe 2 - in ihre Arbeitsposition tastet ein Signalgeber 5 mit einem Sensor 5' bzw. einem Abtastorgan 5' die jeweilige Schleifscheibe ab, um festzustellen, ob der Grundkörper metallische Bestandteile enthält. Dies erfolgt durch einen induktiven Signalgeber 5. Wenn entsprechendes der Fall ist, das heißt wenn eine Schleifscheibe 3 mit kubisch-kristallinem Bornitrid zum Einsatz kommt, dessen Schleifbelag auf einem metallischen Grundkörper angeordnet ist, so schaltet die Antriebsmaschine 7 die entsprechende Umfangsgeschwindigkeit ein durch Steuerung über den Datenspeicher 6, das heißt auf eine Umfangsgeschwindigkeit entsprechend dem Pfeil 11 in der Größe von 80 m/s und gegebenenfalls zusätzlich die optimale Vorschub- und Zustellgeschwindigkeit der Schleifscheibe 3 gegenüber dem Werkzeug 12. Wird bei Abtasten festgestellt, daß der Grundkörper keine metallischen Bestandteile enthält, wird die Umfangsgeschwindigkeit auf 45 m/s geschaltet. Enthält eine Schleifscheibe keine metallischen Anteile, so läßt sich die vorgesehene Steuerung verwirklichen durch die Anwendung eines Signalgebers 5 mit optischem Sensor 5'. Dazu wird eine Scheibe 2 mit einer Markierung 8 bzw. einer reflektierenden Schicht 8 versehen, die beispielsweise in der Art eines Staniolabschnittes ausgebildet sein kann, der über den optischen Sensor 5' ein entsprechendes Signal in den Datenspeicher 6 zur Datenbereitstellung hervorruft. Stattdessen aber kann auch eine besondere Geometrie der Schleifscheibe im Bereich des Sensors 5' so gestaltet sein, daß unterschiedliche Signale abgegeben werden.Before or after the grinding wheel 3 is moved into its working position, as later also the
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853536129 DE3536129A1 (en) | 1985-10-10 | 1985-10-10 | METHOD AND ARRANGEMENT FOR CONTROLLING THE DRIVE OF VARIOUS DIFFERENT TYPE OF GRINDING WHEELS TO BE USED |
| DE3536129 | 1985-10-10 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0218187A2 EP0218187A2 (en) | 1987-04-15 |
| EP0218187A3 EP0218187A3 (en) | 1987-09-09 |
| EP0218187B1 true EP0218187B1 (en) | 1990-01-31 |
Family
ID=6283229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86113530A Expired - Lifetime EP0218187B1 (en) | 1985-10-10 | 1986-10-01 | Process and arrangement for the drive control of various successively operating grinding wheels |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4750298A (en) |
| EP (1) | EP0218187B1 (en) |
| DE (2) | DE3536129A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9106474U1 (en) * | 1991-05-25 | 1991-09-05 | Friedrich Busse Diamantwerkzeuge GmbH + Co., 8540 Schwabach | Tool for processing concrete or similar. |
| DE4230926A1 (en) * | 1992-09-16 | 1994-03-17 | Bosch Gmbh Robert | Process for optimizing the work process of an electric hand tool |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2287449A (en) * | 1940-11-08 | 1942-06-23 | Landis Tool Co | Wheel speed control |
| US2641875A (en) * | 1951-09-26 | 1953-06-16 | Cincinnati Milling Machine Co | Grinding wheel speed regulator |
| US2994994A (en) * | 1960-03-23 | 1961-08-08 | Scan O Matic Company | Grinding apparatus and the like |
| US3250043A (en) * | 1963-08-27 | 1966-05-10 | Finkl & Sons Co | Fail-safe speed control system for abrasive wheels |
| DE1502521B2 (en) * | 1965-03-22 | 1974-03-07 | Mso Maschinen- Und Schleifmittelwerke Gmbh, 6050 Offenbach | Safety device for monitoring the peripheral speed of grinding wheels |
| JPS48101151A (en) * | 1972-04-04 | 1973-12-20 | ||
| CS160721B1 (en) * | 1973-05-29 | 1975-05-04 | ||
| SE395844B (en) * | 1975-06-17 | 1977-08-29 | Asea Ab | PERIOD SPEED CONTROL DEVICE FOR ROTARY OBJECT |
| JPS5255093A (en) * | 1975-10-31 | 1977-05-06 | Seiko Seiki Kk | Method of controlling cuts in inner surface grinding machine |
| US4530148A (en) * | 1981-07-02 | 1985-07-23 | L. Schuler Gmbh | Tool changing mechanism |
| JPS59122209U (en) * | 1983-02-07 | 1984-08-17 | 株式会社デイスコ | Cutting machine |
| DE3315197A1 (en) * | 1983-04-27 | 1984-10-31 | Schaudt Maschinenbau Gmbh, 7000 Stuttgart | METHOD FOR DRESSING GRINDING WHEELS |
| JPS59219139A (en) * | 1983-05-27 | 1984-12-10 | Toyoda Mach Works Ltd | Center height control device in centerless grinder |
| JPS6090656A (en) * | 1983-10-20 | 1985-05-21 | Citizen Watch Co Ltd | Spindle-position correcting appratus for machine tool |
-
1985
- 1985-10-10 DE DE19853536129 patent/DE3536129A1/en not_active Withdrawn
-
1986
- 1986-10-01 EP EP86113530A patent/EP0218187B1/en not_active Expired - Lifetime
- 1986-10-01 DE DE8686113530T patent/DE3668571D1/en not_active Expired - Lifetime
- 1986-10-09 US US06/917,001 patent/US4750298A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4750298A (en) | 1988-06-14 |
| DE3536129A1 (en) | 1987-04-16 |
| EP0218187A3 (en) | 1987-09-09 |
| DE3668571D1 (en) | 1990-03-08 |
| EP0218187A2 (en) | 1987-04-15 |
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