EP0411345A2 - Feeding and dosing equipment for the lapping mixture in polishing machines for lapping, grinding or polishing - Google Patents

Feeding and dosing equipment for the lapping mixture in polishing machines for lapping, grinding or polishing Download PDF

Info

Publication number
EP0411345A2
EP0411345A2 EP90113032A EP90113032A EP0411345A2 EP 0411345 A2 EP0411345 A2 EP 0411345A2 EP 90113032 A EP90113032 A EP 90113032A EP 90113032 A EP90113032 A EP 90113032A EP 0411345 A2 EP0411345 A2 EP 0411345A2
Authority
EP
European Patent Office
Prior art keywords
feeding
lapping
upper working
dosing device
mixture
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.)
Granted
Application number
EP90113032A
Other languages
German (de)
French (fr)
Other versions
EP0411345A3 (en
EP0411345B1 (en
Inventor
Klaus Biebesheimer
Alexander Dipl.-Ing. Hofsess
Dieter Dr. Simpfendörfer
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.)
Diskus Werke Frankfurt am Main AG
Original Assignee
Diskus Werke Frankfurt am Main AG
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
Priority claimed from DE19893925274 external-priority patent/DE3925274A1/en
Priority claimed from DE19904016335 external-priority patent/DE4016335A1/en
Application filed by Diskus Werke Frankfurt am Main AG filed Critical Diskus Werke Frankfurt am Main AG
Publication of EP0411345A2 publication Critical patent/EP0411345A2/en
Publication of EP0411345A3 publication Critical patent/EP0411345A3/en
Application granted granted Critical
Publication of EP0411345B1 publication Critical patent/EP0411345B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
    • B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
    • 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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces

Definitions

  • the invention relates to a feed and metering device for the lapping mixture in finishing machines for lapping, fine grinding or polishing with a vertical-axis arrangement of two working disks.
  • the feed and metering device according to the invention for the lapping mixture is characterized in fine processing machines according to the preamble of claim 1, characterized in that the lapping mixture is distributed in one or more ring channels on the back of the upper working disk with the aid of a stripping device rotating relative to the upper working disk and can be fed to the effective space via bores, the stripping device consisting of several centrically to the axis
  • the stripper arranged on the upper working disc has its own drive which, when the speed falls below the predetermined speed limit of the upper working disc, sets this device into a rotation that is preferably opposite to that of the disc.
  • the lapping mixture is fed to the wipers via a vertical flow tube with free exit of the lapping mixture, to which, on the one hand, a drip tube is arranged in parallel with a receiving funnel pointing sideways to the end of the flow tube, on which, on the other hand, a jet nozzle is directed , which can be loaded with a pulsating air flow which is controllable in its strength and / or pulsation frequency.
  • the lapping mixture A is supplied via a vertical flow tube 1 with a free outlet at the beveled end 2.
  • a drip tube 3 is arranged in parallel with a receiving funnel 4 pointing sideways towards the end of the flow tube, on which a jet nozzle 5 is directed, which deflects the lapping mixture A partially in the direction C into the funnel 4, depending on its strength and / or pulsation frequency, by means of the air flow B, while the remaining amount reaches the receiving container 7 in the direction D via the outlet connection 6 and from here is returned via line 8 to flow tube 1.
  • the deflected lapping mixture portion then reaches one or more ring channels 10 on the rear of the upper working disk 11 and from there via bores 12 into the active space 13 between the upper and lower working disk 11, 14 as can be seen in FIG becomes.
  • the lapping mixture is evenly distributed according to FIG. 2 with the aid of a stripping device 15 which rotates relatively to the upper working disk 11, by means of scrapers 16 in one or more ring channels 10 with bores 12 to the active space 13.
  • the stripping device 15 consists of several perpendicular to the axis X of the upper working disk 11 arranged wipers 16 with their own drive 17, which sets this device 15 when the speed falls below a predetermined speed limit of the upper working disc 11 in a preferably opposite rotation to the disc rotation.
  • the drive 17 of the stripping device 15 is secured here against rotation by the guide rod 20 on the machine structure 21; on the other hand, it makes the pendulum movement of the upper working disk 11 as can be seen via the joint bearing 18.
  • the stripping device is fastened by means of the bearing 22 and the holder of the drive 17 by means of the bearing 23 to the carrier 24 of the upper working disk 11, the stripping device being e.g. can be set in rotation via a belt drive 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention relates to a feeding and dosing attachment for the lapping mixture in finishing machines for lapping, grinding or polishing, having a vertical-axis arrangement of two working wheels, the intention being for the feeding and dosing of the lapping mixture to be controllable as a function of the specification of the part to be machined in each case and of the selected cutting conditions. Furthermore, by means of a wiper device rotating relative to the top working wheel, the lapping mixture can be distributed in one or more annular channels on the back of the top working wheel and can be fed to the operating space via bores. …<IMAGE>…

Description

Die Erfindung bezieht sich auf eine Zuführ- und Dosierein­richtung für das Läppgemisch bei Feinbearbeitungsmaschinen zum Läppen, Feinschleifen oder Polieren mit vertikal-ach­siger Anordnung zweier Arbeitsscheiben.The invention relates to a feed and metering device for the lapping mixture in finishing machines for lapping, fine grinding or polishing with a vertical-axis arrangement of two working disks.

Aufgrund der universellen Verwendbarkeit derartiger Fein­bearbeitungsmaschinen ist es von Vorteil, die Zufuhr des Läppgemisches in den Wirkraum mit einer der Bearbeitungs­aufgabe angepaßten Menge und Gleichmäßigkeit sicherzustel­len. Es ist die Aufgabe der Zuführ- und Dosiereinrichtung, dies in Abhängigkeit der jeweils zu bearbeitenden Teile­spezifikation und der gewählten Zerspanungsbedingungen steuerbar zu ermöglichen, was mit der Erfindung erreicht wird.Due to the universal applicability of such fine processing machines, it is advantageous to ensure the supply of the lapping mixture into the effective space with a quantity and uniformity adapted to the processing task. It is the task of the feed and metering device to enable this to be controlled in a manner dependent on the part specification to be processed in each case and the selected machining conditions, which is achieved with the invention.

Zur Lösung dieser Aufgabe kennzeichnet sich die erfindungs­gemäße Zuführ- und Dosiereinrichtung für das Läppgemisch bei Feinbearbeitungsmaschinen nach dem Oberbegriff von An­spruch 1 dadurch, daß das Läppgemisch mit Hilfe einer zur oberen Arbeitsscheibe relativ drehenden Abstreifeinrich­tung in einem oder mehreren Ringkanälen an der Rückseite der oberen Arbeitsscheibe verteilt und dem Wirkraum über Bohrungen zuführbar ist, wobei die Abstreifeinrichtung aus mehreren zentrisch zur Achse der oberen Arbeitsscheibe an­geordneten Abstreifern besteht mit eigenem Antrieb, der diese Einrichtung beim Unterschreiten einer vorgegebenen Drehzahlgrenze der oberen Arbeitsscheibe in eine zur Scheibendrehung vorzugsweise gegensinnige Rotation ver­setzt.To achieve this object, the feed and metering device according to the invention for the lapping mixture is characterized in fine processing machines according to the preamble of claim 1, characterized in that the lapping mixture is distributed in one or more ring channels on the back of the upper working disk with the aid of a stripping device rotating relative to the upper working disk and can be fed to the effective space via bores, the stripping device consisting of several centrically to the axis The stripper arranged on the upper working disc has its own drive which, when the speed falls below the predetermined speed limit of the upper working disc, sets this device into a rotation that is preferably opposite to that of the disc.

Nach einem weiteren Gedanken der Erfindung erfolgt die Zu­fuhr des Läppgemisches zu den Abstreifern über ein senk­rechtes Strömungsrohr mit freiem Austritt des Läppgemisches, zu welchem einerseits parallel versetzt ein Tropfrohr ange­ordnet ist mit seitwärts auf das Ende des Strömungsrohres weisendem Aufnahmetrichter, auf welchen andererseits eine Strahldüse gerichtet ist, welche mit einem pulsierenden Luftstrom beschickbar ist, der in seiner Stärke und/oder Pulsationsfrequenz steuerbar ist.According to a further concept of the invention, the lapping mixture is fed to the wipers via a vertical flow tube with free exit of the lapping mixture, to which, on the one hand, a drip tube is arranged in parallel with a receiving funnel pointing sideways to the end of the flow tube, on which, on the other hand, a jet nozzle is directed , which can be loaded with a pulsating air flow which is controllable in its strength and / or pulsation frequency.

In der Zeichnung ist eine bevorzugte Ausführungsform der Zuführ- und Dosiereinrichtung gemäß der Erfindung als Aus­führungsbeispiel dargestellt und nachfolgend beschrieben und zwar zeigen:

  • Figur 1 die schematische Darstellung der dosierten Zu­fuhr des Läppgemisches und
  • Figur 2 die schematische Darstellung der Verteilung des­selben.
In the drawing, a preferred embodiment of the feed and metering device according to the invention is shown as an exemplary embodiment and described below, namely:
  • Figure 1 is a schematic representation of the metered supply of the lapping mixture and
  • Figure 2 is a schematic representation of the distribution of the same.

Wie sich aus der Zeichnung in Figur 1 ergibt, erfolgt die Zufuhr des Läppgemisches A über ein senkrechtes Strö­mungsrohr 1 mit freiem Austritt am angeschrägten Ende 2. Hierzu ist parallel versetzt ein Tropfrohr 3 angeordnet mit seitwärts auf das Ende des Strömungsrohres weisendem Aufnahmetrichter 4, auf welchen eine Strahldüse 5 gerich­tet ist, die mittels des Luftstromes B das Läppgemisch A teilweise in Richtung C in den Trichter 4 steuerbar ab­hängig von seiner Stärke und/oder Pulsationsfrequenz ab­lenkt, während die Restmenge in Richtung D über den Ablauf­stutzen 6 in den Aufnahmebehälter 7 gelangt und von hier aus über die Leitung 8 zum Strömungsrohr 1 zurückgeführt wird.As can be seen from the drawing in FIG. 1, the lapping mixture A is supplied via a vertical flow tube 1 with a free outlet at the beveled end 2. For this purpose, a drip tube 3 is arranged in parallel with a receiving funnel 4 pointing sideways towards the end of the flow tube, on which a jet nozzle 5 is directed, which deflects the lapping mixture A partially in the direction C into the funnel 4, depending on its strength and / or pulsation frequency, by means of the air flow B, while the remaining amount reaches the receiving container 7 in the direction D via the outlet connection 6 and from here is returned via line 8 to flow tube 1.

Vom Ausfluß 9 eines oder mehrerer Tropfrohre 3 gelangt der abgelenkte Läppgemischanteil sodann in einen oder mehrere Ringkanäle 10 an der Rückseite der oberen Arbeitsscheibe 11 und von dort über Bohrungen 12 in den Wirkraum 13 zwi­schen der oberen und unteren Arbeitsscheibe 11, 14 wie aus Figur 2 ersichtlich wird.From the outflow 9 of one or more drip pipes 3, the deflected lapping mixture portion then reaches one or more ring channels 10 on the rear of the upper working disk 11 and from there via bores 12 into the active space 13 between the upper and lower working disk 11, 14 as can be seen in FIG becomes.

Die gleichmäßige Verteilung des Läppgemisches geschieht entsprechend Figur 2 mit Hilfe einer zur oberen Arbeits­scheibe 11 relativ drehenden Abstreifeinrichtung 15 mittels Abstreifern 16 in einem oder mehreren Ringkanälen 10 mit Bohrungen 12 zum Wirkraum 13. Hierbei besteht die Abstreif­einrichtung 15 aus mehreren senkrecht zur Achse X der obe­ren Arbeitsscheibe 11 angeordneten Abstreifern 16 mit eige­nem Antrieb 17, der diese Einrichtung 15 beim Unterschrei­ten einer vorgegebenen Drehzahlgrenze der oberen Arbeits­scheibe 11 in eine zur Scheibendrehung bevorzugt gegen­sinnige Rotation versetzt.The lapping mixture is evenly distributed according to FIG. 2 with the aid of a stripping device 15 which rotates relatively to the upper working disk 11, by means of scrapers 16 in one or more ring channels 10 with bores 12 to the active space 13. Here, the stripping device 15 consists of several perpendicular to the axis X of the upper working disk 11 arranged wipers 16 with their own drive 17, which sets this device 15 when the speed falls below a predetermined speed limit of the upper working disc 11 in a preferably opposite rotation to the disc rotation.

Bei pendelnder Aufhängung der oberen Arbeitsscheibe 11 mittels Gelenklager 18 an der Pinole 19 ist der Antrieb 17 der Abstreifeinrichtung 15 hier über die Führungsstange 20 am Maschinenaufbau 21 gegen Mitdrehen gesichert; er macht dagegen die Pendelbewegung der oberen Arbeitsscheibe 11 wie ersichtlich über das Gelenklager 18 mit. Hierbei sind die Abstreifeinrichtung mittels der Lagerung 22 so­wie die Halterung des Antriebs 17 mittels der Lagerung 23 am Träger 24 der oberen Arbeitsscheibe 11 befestigt, wo­bei die Abstreifeinrichtung z.B. über einen Riementrieb 25 in Drehung versetzbar ist.When the upper working disc 11 is suspended by means of a joint bearing 18 on the sleeve 19, the drive 17 of the stripping device 15 is secured here against rotation by the guide rod 20 on the machine structure 21; on the other hand, it makes the pendulum movement of the upper working disk 11 as can be seen via the joint bearing 18. The stripping device is fastened by means of the bearing 22 and the holder of the drive 17 by means of the bearing 23 to the carrier 24 of the upper working disk 11, the stripping device being e.g. can be set in rotation via a belt drive 25.

Claims (8)

1. Zuführ- und Dosiereinrichtung für das Läppgemisch bei Feinbearbeitungsmaschinen zum Läppen, Feinschleifen oder Polieren mit vertikal - achsiger Anordnung zweier Ar­beitsscheiben, dadurch gekennzeichnet,
daß das Läppgemisch mit Hilfe einer zur oberen Arbeits­scheibe relativ drehenden Abstreifeinrichtung in einem oder mehreren Ringkanälen an der Rückseite der oberen Arbeits­scheibe verteilt und dem Wirkraum über Bohrungen zuführbar ist.1. Feeding and dosing device for the lapping mixture in the case of finishing machines for lapping, fine grinding or polishing with a vertical-axis arrangement of two working disks, characterized in that
that the lapping mixture is distributed in one or more ring channels on the back of the upper working disk with the aid of a wiping device which rotates relatively to the upper working disk and can be fed to the working space via bores. 2. Zuführ- und Dosiereinrichtung nach Anspruch 1, da­durch gekennzeichnet,
daß die Abstreifeinrichtung aus mehreren zentrisch zur Achse der oberen Arbeitsscheibe angeordneten Abstreifern besteht mit eigenem Antrieb, der diese Einrichtung beim Unterschreiten einer vorgegebenen Drehzahlgrenze der obe­ren Arbeitsscheibe in eine zur Scheibendrehung vorzugs­weise gegensinnige Rotation versetzt.2. Feeding and dosing device according to claim 1, characterized in that
that the stripping device consists of a plurality of strippers arranged centrally with respect to the axis of the upper working disk, which drives this device when the speed falls below a predetermined speed limit of the upper working disk in a rotation which is preferably opposite to that of the disk. 3. Zuführ- und Dosiereinrichtung nach Anspruch 2, dadurch gekennzeichnet,
daß bei pendelnder Aufhängung der oberen Arbeitsscheibe der Antrieb der Abstreifeinrichtung gegen Drehung um die Achse der oberen Arbeitsscheibe gesichert ist, jedoch de­ren Pendelbewegung mitvollzieht.3. Feeding and dosing device according to claim 2, characterized in that
that when the upper working disc is suspended, the drive of the scraper device is secured against rotation about the axis of the upper working disc, but does follow its pendulum movement. 4. Zuführ- und Dosiereinrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet,
daß die Abstreifeinrichtung sowie die Halterung des An­triebs mittels Lagerung am Träger der oberen Arbeits­scheibe derart befestigt sind, daß sich keine Rückwirkung aus der Drehung der Arbeitsscheibe ergibt.4. Feeding and dosing device according to claim 2 or 3, characterized in that
that the scraper and the holder of the drive are attached by means of storage on the carrier of the upper working disc in such a way that there is no reaction results from the rotation of the working disc. 5. Zuführ- und Dosiereinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet,
daß die Zufuhr des Läppgemisches zu den Abstreifern über ein senkrechtes Strömungsrohr mit freiem Austritt des Läpp­gemisches erfolgt, zu welchem einerseits parallel versetzt ein Tropfrohr angeordnet ist mit seitwärts auf das Ende des Strömungsrohres weisendem Aufnahmetrichter, auf welchen an­dererseits eine Strahldüse gerichtet ist, welche mit einem pulsierenden Luftstrom beschickbar ist, der in seiner Stärke und/oder Pulsationsfrequenz steuerbar ist.5. Feeding and dosing device according to one of claims 1 to 4, characterized in that
that the supply of the lapping mixture to the wipers takes place via a vertical flow tube with free exit of the lapping mixture, to which, on the one hand, a drip tube is arranged in parallel with a receiving funnel pointing sideways to the end of the flow tube, on which, on the other hand, a jet nozzle is directed, which has a pulsating Air flow can be fed, which is controllable in its strength and / or pulsation frequency. 6. Zuführ- und Dosiereinrichtung nach Anspruch 5, da­durch gekennzeichnet,
daß das Ende des Strömungsrohres bezogen auf die Strömungs­richtung abgeschrägt ist.6. Feeding and dosing device according to claim 5, characterized in that
that the end of the flow tube is beveled with respect to the direction of flow. 7. Zuführ- und Dosiereinrichtung nach einem der Ansprü­che 5 oder 6, dadurch gekennzeichnet,
daß das Strömungsrohr über einem Auffangbehälter endet, wel­cher der Rückführung der Restmenge des Läppgemisches dient.7. Feeding and dosing device according to one of claims 5 or 6, characterized in that
that the flow tube ends above a collecting container which serves to return the remaining amount of the lapping mixture. 8. Zuführ- und Dosiereinrichtung nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet,
daß der Ausfluß aus einem oder mehreren Tropfrohren ober­halb eines oder mehrerer Ringkanäle auf der Rückseite der oberen Arbeitsscheibe vorgesehen ist.8. Feeding and dosing device according to one of the preceding claims, characterized in that
that the outflow from one or more drip pipes is provided above one or more ring channels on the back of the upper working disc.
EP90113032A 1989-07-31 1990-07-07 Feeding and dosing equipment for the lapping mixture in polishing machines for lapping, grinding or polishing Expired - Lifetime EP0411345B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19893925274 DE3925274A1 (en) 1989-07-31 1989-07-31 Supply and dispensing mechanism for lapping mixt.
DE3925274 1989-07-31
DE4016335 1990-05-21
DE19904016335 DE4016335A1 (en) 1989-07-31 1990-05-21 FEEDING AND DOSING DEVICE FOR THE LAPPING MIXTURE FOR FINISHING MACHINES FOR LAPPING, FINISHING OR POLISHING

Publications (3)

Publication Number Publication Date
EP0411345A2 true EP0411345A2 (en) 1991-02-06
EP0411345A3 EP0411345A3 (en) 1991-04-10
EP0411345B1 EP0411345B1 (en) 1993-09-22

Family

ID=25883566

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90113032A Expired - Lifetime EP0411345B1 (en) 1989-07-31 1990-07-07 Feeding and dosing equipment for the lapping mixture in polishing machines for lapping, grinding or polishing

Country Status (3)

Country Link
US (1) US5109631A (en)
EP (1) EP0411345B1 (en)
DE (1) DE59002816D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3835393A1 (en) 2019-12-13 2021-06-16 Warezak, Tomasz Brown coal pellets

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5762543A (en) * 1995-11-30 1998-06-09 Speedfam Corporation Polishing apparatus with improved product unloading
US6149506A (en) * 1998-10-07 2000-11-21 Keltech Engineering Lapping apparatus and method for high speed lapping with a rotatable abrasive platen
US5993298A (en) * 1997-03-06 1999-11-30 Keltech Engineering Lapping apparatus and process with controlled liquid flow across the lapping surface
US5967882A (en) * 1997-03-06 1999-10-19 Keltech Engineering Lapping apparatus and process with two opposed lapping platens
US6120352A (en) * 1997-03-06 2000-09-19 Keltech Engineering Lapping apparatus and lapping method using abrasive sheets
US5910041A (en) * 1997-03-06 1999-06-08 Keltech Engineering Lapping apparatus and process with raised edge on platen
US6048254A (en) * 1997-03-06 2000-04-11 Keltech Engineering Lapping apparatus and process with annular abrasive area
US6036585A (en) * 1997-03-31 2000-03-14 Nippei Toyama Corporation Grinder and grinding method
US6102777A (en) * 1998-03-06 2000-08-15 Keltech Engineering Lapping apparatus and method for high speed lapping with a rotatable abrasive platen
JP3909619B2 (en) * 1998-05-19 2007-04-25 独立行政法人理化学研究所 Apparatus and method for mirror processing of magnetic disk substrate
IT1396287B1 (en) * 2009-09-28 2012-11-16 Biesse Spa CONTINUOUS DISTRIBUTOR
KR101660898B1 (en) * 2014-08-13 2016-09-28 주식회사 엘지실트론 Apparatus for supplying slurry and polishing apparatus including the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE507816A (en) * 1951-05-19
DE2346325A1 (en) * 1973-09-14 1975-03-27 Waldrich Werkzeugmasch DOSING DEVICE FOR LIQUIDS CONTAINING GRANULATED SOLIDS, IN PARTICULAR LEAK LIQUID
DE2440978A1 (en) * 1974-08-27 1976-03-18 Jmj Werkzeugmaschinen Gmbh PROCESS AND MACHINE FOR PLAN, PLANPARALLEL AND OUTDOOR ROUND LAPS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US267783A (en) * 1882-11-21 Island
US1476863A (en) * 1922-01-17 1923-12-11 Floyd C Weaver Machine for making true plane surfaces
US2973605A (en) * 1959-11-09 1961-03-07 Carman Lab Inc Lapping machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE507816A (en) * 1951-05-19
DE2346325A1 (en) * 1973-09-14 1975-03-27 Waldrich Werkzeugmasch DOSING DEVICE FOR LIQUIDS CONTAINING GRANULATED SOLIDS, IN PARTICULAR LEAK LIQUID
DE2440978A1 (en) * 1974-08-27 1976-03-18 Jmj Werkzeugmaschinen Gmbh PROCESS AND MACHINE FOR PLAN, PLANPARALLEL AND OUTDOOR ROUND LAPS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3835393A1 (en) 2019-12-13 2021-06-16 Warezak, Tomasz Brown coal pellets

Also Published As

Publication number Publication date
DE59002816D1 (en) 1993-10-28
EP0411345A3 (en) 1991-04-10
US5109631A (en) 1992-05-05
EP0411345B1 (en) 1993-09-22

Similar Documents

Publication Publication Date Title
EP0411345A2 (en) Feeding and dosing equipment for the lapping mixture in polishing machines for lapping, grinding or polishing
DE2535084A1 (en) METHOD AND DEVICE FOR DISTRIBUTING FLOWABLE MATERIAL
CH384396A (en) Process for grinding and polishing the surface of workpieces using spherical blasting media containing abrasives, and apparatus for carrying out the process
CH654782A5 (en) METHOD AND DEVICE FOR COMPENSATING THE WEAR OF AN ADJUSTABLE GRINDING WHEEL DRESSING TOOL.
DE2741276C2 (en)
CH664728A5 (en) FLAT GRINDING MACHINE.
DE2435848C3 (en) Device for keeping the contact surface of a honing stone clean
DE2607385A1 (en) SPRAY DEVICE
EP0802018A1 (en) Apparatus for grinding an end-face, specially a ring-face, on the edge of a workpiece bore
DE3120260C2 (en)
EP0024029A1 (en) Apparatus for coating striplike material, particularly strip metal
DE4445592C2 (en) Tool for deburring plastic and rubber molded parts
DE2507025B2 (en) Seed drill
DE4016335A1 (en) FEEDING AND DOSING DEVICE FOR THE LAPPING MIXTURE FOR FINISHING MACHINES FOR LAPPING, FINISHING OR POLISHING
DE2625373A1 (en) UNIVERSAL CIRCULAR GRINDING MACHINE
DE4326714A1 (en) Segment rotating nozzle
DE974302C (en) Device for cleaning granulating plates
DE3627556C2 (en)
DE3517764C2 (en)
DE3007990A1 (en) Fluid additive injector for bulk goods - blows gas cover with controlled speed and pressure around nozzle and spray cone
DE2440978A1 (en) PROCESS AND MACHINE FOR PLAN, PLANPARALLEL AND OUTDOOR ROUND LAPS
DE2642011C3 (en) Device for filling flat workpieces
DE947682C (en) Device for the automatic feeding of abrasives that tend to bake to a grinding disc designed as a flap disc
DE2847753C2 (en)
DE2829788A1 (en) GRINDING MACHINE

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE ES FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE ES FR GB IT LI

17P Request for examination filed

Effective date: 19910413

RHK1 Main classification (correction)

Ipc: B24B 57/00

17Q First examination report despatched

Effective date: 19920731

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES FR GB IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19930922

Ref country code: GB

Effective date: 19930922

Ref country code: FR

Effective date: 19930922

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19930922

REF Corresponds to:

Ref document number: 59002816

Country of ref document: DE

Date of ref document: 19931028

EN Fr: translation not filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19930922

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940731

Ref country code: CH

Effective date: 19940731

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980509

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000503