EP0389871B1 - Apparatus for controlling an automatic grinding machine for cleaning castings - Google Patents
Apparatus for controlling an automatic grinding machine for cleaning castings Download PDFInfo
- Publication number
- EP0389871B1 EP0389871B1 EP19900104858 EP90104858A EP0389871B1 EP 0389871 B1 EP0389871 B1 EP 0389871B1 EP 19900104858 EP19900104858 EP 19900104858 EP 90104858 A EP90104858 A EP 90104858A EP 0389871 B1 EP0389871 B1 EP 0389871B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- cutting
- disk
- casting
- machine
- 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
- 238000005266 casting Methods 0.000 title claims abstract description 13
- 238000004140 cleaning Methods 0.000 title claims abstract description 9
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 17
- 238000011156 evaluation Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 241001295925 Gegenes Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241001136792 Alle Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010041953 Staring Diseases 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011505 plaster 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
- 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
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/16—Cutting by use of rotating axially moving tool with control means energized in response to activator stimulated by condition sensor
- Y10T408/17—Cutting by use of rotating axially moving tool with control means energized in response to activator stimulated by condition sensor to control infeed
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/306664—Milling including means to infeed rotary cutter toward work
- Y10T409/307224—Milling including means to infeed rotary cutter toward work with infeed control means energized in response to activator stimulated by condition sensor
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/849—With signal, scale, or indicator
- Y10T83/853—Indicates tool position
- Y10T83/855—Relative to another element
Definitions
- the present invention relates to an automatic cast cleaning machine with a mutually and jointly adjustable clamping means for a machine base to be machined to carry a machine stand and with a tool holder carrying a grinding and / or cutting disc, which is supported on a machine stand by means of slides on the cast workpiece, wherein at least the working feed of the grinding or cutting disc is program-controlled by means of workpiece-dependent control data.
- Such a cast cleaning machine is known from DE-A-2204159.
- the rotational speeds of the motor that change when the workpiece is ground by the grinding tool determine the relative infeed speed between the grinding wheel and the workpiece.
- DE-A-310 55 78 discloses position detection relative to the workpiece, but part of the program control of the tool movement also starts at the point of contact between the tool and the grinding wheel, which leads to large deviations depending on the different clamping of the tool.
- the cast cleaning machines of the known type show an unstable behavior of all parts in motion, which increases the susceptibility to fibrillation and thus imprecise control.
- the object of the present invention is therefore to create a cast-iron grinding machine of the aforementioned type which starts at a flexible starting point for a precise introduction of the programmed machining process, namely directly in front of the workpiece, and in which the unstable behavior of all parts in motion is eliminated.
- a control signal can be generated, which takes effect before a contact between the grinding or cutting disc and the cast workpiece and thus initiates a precise program-controlled machining of the cast workpiece, independently and unaffected by fibrations. It is also irrelevant what material the workpiece is made of and, in addition, that now only the grinding or cutting wheel receives a linear feed during the machining process, but all other actuators are brought into a rigid connection state, any vibrations transferred to actuators can occur no longer have a negative impact.
- the automatic cast plaster grinding machine for processing a cast workpiece 1 comprises a machine stand 10 on which can be moved vertically, horizontally and against one another Tensioning means 5 and 6 are supported for the cast workpiece 1.
- the actuating means here are preferably hydraulic cylinders 42, 42 '. 43 and 44, which are operatively connected to a controllable hydraulic control 50 via corresponding feed lines.
- a tool holder 3 which carries a grinding and / or cutting disc 2, is supported on a machine frame 11 by means of slides 4 on the casting workpiece 1.
- a motor or, as shown, a hydraulic cylinder 40 can effect the feed.
- the tool holder 3 can additionally be arranged on the slide means 4 for a transverse feed, which then, as indicated, is effected by a further hydraulic cylinder 45.
- hydraulic or electric servomotors are also conceivable.
- the actuating means on the machine frame 11 are also operatively connected to the hydraulic control 50 mentioned. This can also be provided for the drive motor 41 of the grinding or cutting disc 2.
- the cast workpiece 1 clamped between them is connected in series with a controllable high-voltage generator 20 and an ignition current evaluation circuit 21 which supplies the control signal 22.
- This circuit also includes a control stage 26 connected to the high-voltage generator 20.
- the output signal 22 then passes to a CNC control system or the like, which in turn controls the hydraulic control 50 by means of control signals 25 and is also fed back by means of a release signal 24.
- the output voltage at the high-voltage generator 20 can be 1,000 to 20,000 volts, whereas the limited ignition current should not exceed 0.1 mA.
- the output signal 22 of the ignition current evaluation circuit 21 has approximately 24 volts.
- a controllable high-voltage potential is thus built up between the grinding or cutting disc 2 and the cast workpiece 1, the level of the voltage and the size of the air gap 30 forming the flashover gap between the disc and the workpiece being a precise measure of the ignition voltage causing the electrical control signal 22.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine automatische Gussputzschleifmaschine mit einem, gegeneinander und gemeinsam verstellbare Festspannmittel für ein zu bearbeitendes Gusswerkstück tragenden Maschinenständer und mit einem, eine Schleif- und/oder Trennscheibe tragenden Werkzeughalter, der über Schlittenmittel an das Gusswerkstück anstellbar auf einem Maschinenbock abgestützt ist, wobei mindestens der Arbeitsvorschub der Schleif- oder Trennscheibe mittels werkstückabhängigen Steuerdaten programmgesteuert ist.The present invention relates to an automatic cast cleaning machine with a mutually and jointly adjustable clamping means for a machine base to be machined to carry a machine stand and with a tool holder carrying a grinding and / or cutting disc, which is supported on a machine stand by means of slides on the cast workpiece, wherein at least the working feed of the grinding or cutting disc is program-controlled by means of workpiece-dependent control data.
Eine solche Gussputzschleifmaschine ist aus der DE-A-2204159 bekannt. Bei dieser Maschine bestimmen die beim Schleifen des Werkstückes durch das Schleifwerkzeug ändernden Drehzahlen des Motors die relative Zustellgeschwindigkeit zwischen Schleifscheibe und Werkstück.Such a cast cleaning machine is known from DE-A-2204159. In this machine, the rotational speeds of the motor that change when the workpiece is ground by the grinding tool determine the relative infeed speed between the grinding wheel and the workpiece.
Die Signalgewinnung setzt hierbei aber immer ein Berühren zwischen Schleifscheibe und Gusswerkstück voraus, was einer präzisen Steuerung durch ein Vorab-Signal entgegensteht.However, signal acquisition always requires touching between the grinding wheel and the cast workpiece, which one Precise control is precluded by a pre-signal.
Zwar ist durch die DE-A-310 55 78 eine zum Werkstück relative Positionserkennung bekannt, wobei aber ein Teil der Programmsteuerung der Werkzeugbewegung ebenfalls am Berührungspunkt zwischen Werkzeug und Schleifscheibe startet, was zu grossen Abweichungen führt, je nach unterschiedlicher Einspannung des Werkzeuges.DE-A-310 55 78 discloses position detection relative to the workpiece, but part of the program control of the tool movement also starts at the point of contact between the tool and the grinding wheel, which leads to large deviations depending on the different clamping of the tool.
Zudem zeigen die Gussputzschleifmaschinen der bekannten Art ein instabiles Verhalten aller in Bewegungsverbindung stehenden Teile, was die Fibrationsanfälligkeit und damit eine unpräzise Steuerung erhöht.In addition, the cast cleaning machines of the known type show an unstable behavior of all parts in motion, which increases the susceptibility to fibrillation and thus imprecise control.
Aufgabe der vorliegenden Erfindung ist deshalb die Schaffung einer Gussputzschleifmaschine der vorgenannten Art, die für eine präzise Einleitung des programmierten Bearbeitungsvorganges an einem flexiblen Ausgangspunkt, nämlich unmittelbar vor dem Werkstück startet und bei der das instabile Verhalten aller in Bewegungsverbindung stehenden Teile aufgehoben wird.The object of the present invention is therefore to create a cast-iron grinding machine of the aforementioned type which starts at a flexible starting point for a precise introduction of the programmed machining process, namely directly in front of the workpiece, and in which the unstable behavior of all parts in motion is eliminated.
Dies wird erfindungsgemäss dadurch erreicht, dass
- a) die Festspannmittel gegen den Maschinenständer über Isolationsmittel und die Schleif-und/oder Trennscheibe gegen den Werkzeughalter über Isolationsmittel elektrisch isoliert sind;
- b) die Schleif- und/oder Trennscheibe (2) elektrisch leitend ausgebildet ist;
- c) die Schleif- und/oder Trennscheibe und die Festspannmittel resp. das zwischen diesen eingespannte Gusswerkstück mit einem regelbaren Hochspannungsgenerator und einer, ein Steuersignal liefernden Zündstrom-Auswertschaltung in Serie geschaltet sind; und
- d) die Zündspannung des zwischen der Schleif- oder Trennscheibe und dem Gusswerkstück aufbaubaren regelbaren Hochspannungspotentials ein Steuersignal bewirkt, das einen programmgesteuerten linearen Arbeitsvorschub der Schleif- oder Trennscheibe einleitet und gleichzeitig alle anderen Stellmittel der Gussputzschleifmaschine in starren Verbindungszustand bringt; wobei
- e) die Stellmittel für die Schlittenmittel resp. Festspannmittel zentral ansteuerbare und feststellbare Stellmotoren resp. Hydraulikzylinder sind.
- a) the clamping means are electrically insulated from the machine stand by means of insulating means and the grinding and / or cutting disc are electrically insulated from the tool holder by means of insulating means;
- b) the grinding and / or cutting disc (2) is electrically conductive;
- c) the grinding and / or cutting disc and the clamping means, respectively. the cast workpiece clamped between these are connected in series with a controllable high-voltage generator and an ignition current evaluation circuit which supplies a control signal; and
- d) the ignition voltage of the adjustable high-voltage potential that can be built up between the grinding or cutting disc and the cast workpiece produces a control signal which initiates a program-controlled linear working feed of the grinding or cutting disc and at the same time brings all other actuating means of the cast cleaning machine into a rigid connection state; in which
- e) the adjusting means for the sled means, respectively. Locking devices can be controlled and locked centrally Actuators resp. Hydraulic cylinders are.
Durch diese Massnahmen kann ein Steuersignal erzeugt werden, welches vor einer Berührung zwischen Schleif- oder Trennscheibe und Gusswerkstück wirksam wird und so unabhängig und unbeeinflusst von Fibrationen eine präzise programmgesteuerte Bearbeitung des Gusswerkstückes einleitet. Hierbei ist es zudem gleichgültig, aus welchem Material das Werkstück besteht, und zudem dadurch, dass nunmehr nur noch die Schleif- oder Trennscheibe beim Bearbeitungsvorgang einen linearen Vorschub erhält, alle anderen Stellglieder aber in starren Verbindungszustand gebracht werden, können sich allfällig auf Stellglieder übertragenen Fibrationen nicht mehr negativ auswirken.Through these measures, a control signal can be generated, which takes effect before a contact between the grinding or cutting disc and the cast workpiece and thus initiates a precise program-controlled machining of the cast workpiece, independently and unaffected by fibrations. It is also irrelevant what material the workpiece is made of and, in addition, that now only the grinding or cutting wheel receives a linear feed during the machining process, but all other actuators are brought into a rigid connection state, any vibrations transferred to actuators can occur no longer have a negative impact.
Eine beispielsweise Ausführungsform des Erfindungsgegenstandes ist nachfolgend anhand der Zeichnung, welche in schematischer Darstellung eine automatische Gussputzschleifmaschine zur Durchführung des erfindungsgemässen Verfahrens zeigt, näher erläutert.An exemplary embodiment of the subject matter of the invention is explained in more detail below with reference to the drawing, which shows a schematic representation of an automatic cast cleaning machine for carrying out the method according to the invention.
Die automatische Gussputzschleifmaschine zur Bearbeitung eines Gusswerkstückes 1 umfasst einen Maschinenständer 10, an dem vertikal, horizontal und gegeneinander bewegbare Festspannmittel 5 und 6 für das Gusswerkstück 1 abgestützt sind. Die Stellmittel sind hier vorzugsweise Hydraulikzylinder 42, 42'. 43 und 44, welche über entsprechende Zuleitungen mit einer ansteuerbaren Hydrauliksteuerung 50 in Wirkungsverbindung stehen.The automatic cast plaster grinding machine for processing a
Gegenüber dem Gusswerkstückbereich ist weiter ein, eine Schleif- und/oder Trennscheibe 2 tragender Werkzeughalter 3 über Schlittenmittel 4 an das Gusswerkstück 1 anstellbar auf einem Maschinenbock 11 abgestützt. Hierbei kann ein Motor, oder wie gezeigt, ein Hydraulikzylinder 40 den Anstellvorschub bewirken. Weiter kann der Werkzeughalter 3 zusätzlich für einen Quervorschub an den Schlittenmitteln 4 angeordnet sein, den dann, wie angedeutet, ein weiterer Hydraulikzylinder 45 bewirkt.Compared to the casting workpiece area, a tool holder 3, which carries a grinding and / or cutting disc 2, is supported on a
Anstelle der Hydraulikzylinder sind auch hydraulische oder elektrische Stellmotoren denkbar.Instead of the hydraulic cylinders, hydraulic or electric servomotors are also conceivable.
Die Stellmittel am Maschinenbock 11 sind ebenfalls mit der genannten Hydrauliksteuerung 50 in Wirkungsverbindung. Dies kann auch für den Antriebsmotor 41 der Schleif- oder Trennscheibe 2 vorgesehen sein.The actuating means on the
Um nun in Abhängigkeit des Näherungsabstandes 30 zwischen der Schleif- oder Trennscheibe 2 und dem Gusswerkstück 1 ein Steuersignal zu gewinnen, das beispielsweise den Schnellvorschub zum Anstellen des Werkzeuges an das Werkstück unterbricht, das ferner evtl. gleichzeitig alle hydraulischen Stellmittel zum Einrichten und Voreinstellen in starren Verbindungszustand bringt und das die beispielsweise werkstückabhängige Programmsteuertung einleitet, ist die Schleif- oder Trennscheibe 2 sowie die Festspannmittel 5 und 6 resp. das zwischen diesen eingespannte Gusswerkstück 1 mit einem regelbaren Hochspannungsgenerator 20 und einer, das Steuersignal 22 liefernden Zündstrom- Auswertschaltung 21 in Serie geschaltet. Dieser Schaltkreis umfasst zudem eine dem Hochspannungsgenerator 20 zugeschaltete Regelstufe 26. Das Ausgangssignal 22 gelangt dann zu einer CNC-Steueranlage oder dgl., welche ihrerseits die Hydrauliksteuerung 50 mittels Steuersignale 25 ansteuert und zudem mittels Freigabesignal 24 rückgekoppelt ist. Die Ausgangsspannung am Hochspannungsgenerator 20 kann dabei 1'000 bis 20'000 Volt betragen, wogegen der begrenzte Zündstrom 0,1 mA nicht überschreiten sollte. Das Ausgangssignal 22 der Zündstrom-Auswertschaltung 21 weist ca. 24 Volt auf.In order to obtain a control signal as a function of the proximity distance 30 between the grinding or cutting disc 2 and the
Solche Schaltungen sind ansich bekannt und bedürfen so keiner näheren Erläuterung. Die trifft auch für die hier anwendbaren numerischen Steuerungen, wie CNC-Steuerung, zu.Such circuits are known per se and therefore require no further explanation. This also applies to the numerical controls that can be used here, such as CNC controls.
Wesentlich ist, dass die Festspannmittel 5 und 6 gegen den Maschinenständer 10 über Isolationsmittel 12 und die Schleif- oder Trennscheibe 2 gegen den Werkzeughalter 3 resp. die Schlittenmittel 4 über Isolationsmittel 13 elektrisch isoliert sind.It is essential that the clamping means 5 and 6 against the machine stand 10 via insulation means 12 and the grinding or cutting disc 2 against the tool holder 3 and. the slide means 4 are electrically insulated via insulation means 13.
Zudem muss die Schleif- oder Trennscheibe 2 über ihre ganze Ausdehnung eine elektrisch leitende Ausbildung aufweisen, etwa durch Einschluss von Graphit in den Schleifkörper oder durch Einbringung oder Aufbringung von Kupfergewebe oder -geflecht.In addition, the grinding or cutting disc 2 over its whole Expansion have an electrically conductive design, for example by inclusion of graphite in the grinding wheel or by introducing or applying copper mesh or braid.
Eine solche Schleif- oder Trennscheibe ist Gegenstand einer gleichzeitig eingereichten Patentanmeldung des gleichen Anmelders.Such a grinding or cutting disc is the subject of a simultaneously filed patent application by the same applicant.
Somit wird zwischen der Schleif- oder Trennscheibe 2 und dem Gusswerkstück 1 ein regelbares Hochspannungspotential aufgebaut, wobei die Höhe der Spannung und die Grösse des den Ueberschlagsspalt bildenden Luftspaltes 30 zwischen Scheibe und Werkstück ein präzises Mass für die das elektrische Steuersignal 22 bewirkende Zündspannung sind.A controllable high-voltage potential is thus built up between the grinding or cutting disc 2 and the
Claims (1)
- Apparatus for controlling an automatic grinding machine for cleaning castings, with supporting clamping or holding devices (5,6), which are adjustable mutually towards each other, for processing a casting (1) on a machine stand (18), and comprising a tool holder (3), on which a grinding and/or cutting-off disk (2) is adjustable on the casting (1) via sliding means (4), supported on a machine support (11), whereby at least the operating advance of the grinding or cutting-off disk is program controlled by means of control data dependent on the workpiece, characterized in thata) the clamping devices (5,6) are electrically insulated on insulating means (12) against the machine stand (10), and the grinding and/or cutting-off disk (2) is electrically insulated on insulating means (13) against the tool holder (3);b) the grinding and/or cutting-off disk (2) is contructed electrically-conductive;c) the grinding and/or cutting-off disk (2) and the clamping devices (5,6) and the casting (1) held therebetween are series-connected to a regulable high-tension generator (20) and an ignition current evaluating switching (21), which supplies a control signal (22), andd) the ignition tension of the regulable high-tension potential is built up across an air gap between the grinding and/or cutting-off disk and the casting, brings an electric control signal, the control signal causing a program-controlled, lineal operating advance of the grinding and/or cutting-off disk and simultaneously brings all other adjusting devices of the grinding machine for cleaning castings to a state of rigid junction, whereine) adjusting devices for the slide means (4) or clamping devices (5,6) are hydraulic servomotors or hydraulic cylinders (40,45,42,42',43,44) which can be centrally controlled and immobilized.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1129/89A CH678292A5 (en) | 1989-03-29 | 1989-03-29 | |
| CH1129/89 | 1989-03-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0389871A2 EP0389871A2 (en) | 1990-10-03 |
| EP0389871A3 EP0389871A3 (en) | 1991-02-06 |
| EP0389871B1 true EP0389871B1 (en) | 1994-09-14 |
Family
ID=4203170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19900104858 Expired - Lifetime EP0389871B1 (en) | 1989-03-29 | 1990-03-15 | Apparatus for controlling an automatic grinding machine for cleaning castings |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5079874A (en) |
| EP (1) | EP0389871B1 (en) |
| AT (1) | ATE111389T1 (en) |
| CH (1) | CH678292A5 (en) |
| DE (1) | DE59007098D1 (en) |
| ES (1) | ES2060837T3 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055884C (en) * | 1993-12-16 | 2000-08-30 | 太原市恒山机械厂 | Method and equipment for grinding the surface of billet controlled by microcomputer |
| JP3022387B2 (en) * | 1997-03-27 | 2000-03-21 | 三ツ星ベルト株式会社 | Belt sleeve width cutting device |
| US20030196528A1 (en) * | 2002-04-19 | 2003-10-23 | Cooper Christopher W. | Compliant cutoff saw assembly |
| CN105290937A (en) * | 2015-11-09 | 2016-02-03 | 芜湖天金机械有限公司 | Online derusting, polishing and waxing device and technical method of universal joint driving shaft |
| CN105382668A (en) * | 2015-12-18 | 2016-03-09 | 国家电网公司 | Steel pipe rust removal device |
| CN107971881B (en) * | 2017-12-06 | 2019-06-28 | 日照中兴汽车有限公司 | A polishing device for automobile parts used in automobile manufacturing |
| CN108436716A (en) * | 2018-03-16 | 2018-08-24 | 郭考香 | A kind of buried type garbage compression box environmental protection treatment machine |
| CN108326704B (en) * | 2018-04-09 | 2020-01-31 | 烟台世德装备股份有限公司 | Cylindrical casting surface polishing device |
| CN109719625B (en) * | 2019-02-27 | 2021-07-06 | 库卡机器人制造（上海）有限公司 | Force control device and robot |
| CN111823066B (en) * | 2020-07-24 | 2021-05-18 | 江西晖旭实业有限公司 | A surface finishing processing system and processing technology of a casting after casting |
| CN113427346B (en) * | 2021-07-15 | 2022-02-18 | 安徽新境界自动化技术有限公司 | A grinding process for iron castings |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3667165A (en) * | 1971-02-16 | 1972-06-06 | G & B Automated Equipment Ltd | Conditioning grinder |
| JPS5216837B2 (en) * | 1973-07-17 | 1977-05-11 | ||
| CH571931A5 (en) * | 1974-06-08 | 1976-01-30 | Movomatic Sa | |
| CH651491A5 (en) * | 1980-12-23 | 1985-09-30 | Maag Zahnraeder & Maschinen Ag | DEVICE FOR POSITIONING A GRINDING WHEEL. |
| DE3717568A1 (en) * | 1987-05-25 | 1988-12-08 | Lach Spezial Werkzeuge Gmbh | METHOD AND DEVICE FOR MECHANICAL GRINDING OF WORKPIECES BY MEANS OF ELECTRICALLY CONDUCTIVE GRINDING TOOLS |
-
1989
- 1989-03-29 CH CH1129/89A patent/CH678292A5/de not_active IP Right Cessation
-
1990
- 1990-03-09 US US07/491,076 patent/US5079874A/en not_active Expired - Fee Related
- 1990-03-15 DE DE59007098T patent/DE59007098D1/en not_active Expired - Fee Related
- 1990-03-15 EP EP19900104858 patent/EP0389871B1/en not_active Expired - Lifetime
- 1990-03-15 AT AT90104858T patent/ATE111389T1/en active
- 1990-03-15 ES ES90104858T patent/ES2060837T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ES2060837T3 (en) | 1994-12-01 |
| DE59007098D1 (en) | 1994-10-20 |
| EP0389871A2 (en) | 1990-10-03 |
| EP0389871A3 (en) | 1991-02-06 |
| CH678292A5 (en) | 1991-08-30 |
| ATE111389T1 (en) | 1994-09-15 |
| US5079874A (en) | 1992-01-14 |
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