EP0125545A2 - Centrifugeuse - Google Patents

Centrifugeuse Download PDF

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Publication number
EP0125545A2
EP0125545A2 EP84104719A EP84104719A EP0125545A2 EP 0125545 A2 EP0125545 A2 EP 0125545A2 EP 84104719 A EP84104719 A EP 84104719A EP 84104719 A EP84104719 A EP 84104719A EP 0125545 A2 EP0125545 A2 EP 0125545A2
Authority
EP
European Patent Office
Prior art keywords
container
centrifugal machine
machine according
plate
wear
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.)
Withdrawn
Application number
EP84104719A
Other languages
German (de)
English (en)
Other versions
EP0125545A3 (fr
Inventor
Norbert Eichenberg
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.)
Rosler Gleitschlifftechnik Maschinenbau und Technische Keramik GmbH
Original Assignee
Rosler Gleitschlifftechnik Maschinenbau und Technische Keramik GmbH
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 DE19833317311 external-priority patent/DE3317311A1/de
Priority claimed from DE19833320891 external-priority patent/DE3320891A1/de
Application filed by Rosler Gleitschlifftechnik Maschinenbau und Technische Keramik GmbH filed Critical Rosler Gleitschlifftechnik Maschinenbau und Technische Keramik GmbH
Publication of EP0125545A2 publication Critical patent/EP0125545A2/fr
Publication of EP0125545A3 publication Critical patent/EP0125545A3/fr
Withdrawn legal-status Critical Current

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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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
    • B24B31/108—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work involving a sectioned bowl, one part of which, e.g. its wall, is stationary and the other part of which is moved, e.g. rotated

Definitions

  • the invention relates to a centrifugal machine with a pivotable working container and the use of such a centrifugal machine in a quasi-continuous system.
  • centrifugal machines consist of a swivel-mounted, vertically standing container during operation, the bottom of which is designed as a rotation plate.
  • grinding wheels referred to as chips
  • workpieces to be machined are placed.
  • the rotation plate is set in rotation, a toroidal movement of the chips and the workpieces occurs, which because of their weight tend to move to the edge of the container. Due to the flowing material, a movement along the container wall to the center and back to the rotation plate is formed, so that a further, slower relative movement is added to the toroidal movement of the total mass.
  • the resulting pressure forces result in a very short, intensive processing, whereby in addition to the different chips, the compounds used are essential, which can be metered into the water flow by means of a metering pump.
  • the object of the invention is to improve such a centrifugal machine in such a way that its service life is significantly increased without the total effort for the construction and construction of such a machine is noticeably more expensive.
  • replaceable wear elements are arranged in the region of the transition from the rotating plate to the container, and preferably the rotating plate is provided with a plurality of radially extending driving lugs which are curved counter to the direction of rotation.
  • the measures according to the invention can extend the service life of the machine ten times and, above all, advantages in the machining of small and thin parts, such as Washers can be achieved, since in such cases with conventional machines, wear that leads to malfunctions can occur after a relatively short time.
  • Another special feature of the invention is that the gap between the rotating plate and the container wall is flared outwards or downwards. This ensures that damage to the machine due to the passage of small parts is avoided. If such a small part gets through the gap between the plate and the container wall, it falls down without causing any further damage.
  • the same material can be used for the wear materials on the plate and on the container wall, but in some cases it is advantageous to use different wear materials and optimal wear pairings.
  • the wear material can be particularly suitable metals but also corresponding plastics, for example polyurethane.
  • the attachment of the wear materials can by Screwing, gluing or also by bracing or holding in corresponding recesses.
  • a particularly advantageous use of a centrifugal machine can take place according to the invention in a system, which is characterized in that a storage container is arranged above the pivotable or tiltable working container, which is fed with grinding wheels coming from a separating device and via a slide or flap control in the working container can be emptied.
  • the centrifugal machine is only stopped during the periods when a batch is dumped and filled with grinding wheels of a new batch. Both periods are short. Undesired downtimes are avoided in this way as well as through the use of the wear-preventing inserts, which make it possible to minimize the downtimes that were previously required for repair purposes.
  • the container 14 filled with parts to be processed, chips and compound is arranged in a stable frame and is closed on the bottom side by a conical, pot-shaped bottom 15.
  • This bottom 15 is set in rotation by a suitable drive device.
  • the rotating floor or plate 2 extends directly to the wall of the container 14, so that no parts can come out.
  • the plate is equipped with a wear layer 16 in its area adjacent to the container wall.
  • a wear layer 16 in its area adjacent to the container wall.
  • This can be, for example, a wear ring that can be replaced quickly and easily.
  • the area of the container wall, which is opposite the plate 15, is preferably equipped with a sleeve-shaped wear unit in this case, so that in the critical areas there is a guarantee that wear will be minimized and easy replacement the damage to plates and containers preventing elements can be guaranteed.
  • Fig. 2 shows in a very schematic manner a variant of a centrifugal machine with container 14 and rotating base 15, the wear materials on the plate being identified by 16 and on the container wall by 17.
  • the plate is shown here, but this only serves to explain the principle of wear prevention.
  • An essential aspect of the invention is also that the gap between the plate 15 and the container wall 14 is conically widening outwards, so that an annular gap 18 is formed, from which thin particles possibly emerging downwards from the container 14 result in no clamping and so that they lead to damage effects, but can fall freely as soon as they have overcome the beginning of the gap.
  • FIG. 3 shows a top view of a preferred embodiment of a turntable 15 which can be used in centrifugal machines of the type described and which is provided with specially designed drive lugs 19.
  • drive lugs 19 By means of these driving lugs 19 it is possible to achieve a very desired relative movement within the grinding medium and thus to significantly improve the machining results.
  • the driver lugs 19 are on the rotating within the container shell 14 plate 15 by about 90 ° attached to each other.
  • the outer, curved edge of each driving lug 19 begins in each case on a cover cap 20 provided in the center and extends in a circular arc to the outer periphery of the turntable, the curvature being selected in the opposite direction to the direction of rotation of the plate 15.
  • This design of the turntable is particularly advantageous when machining small parts.
  • the drive lugs are preferably not firmly incorporated into the shape of the turntable, but are screwed on and can therefore be changed without any problems.
  • This interchangeable attachment of the driving lugs 19 also has the advantage that they can be adapted to the respective processing medium with regard to their width, height and, if appropriate, their cross-sectional shape.
  • the interchangeability also has an advantageous effect with regard to the wear that occurs since, when a certain degree of wear is reached, it is not the entire plate that has to be replaced, but only the driver lugs.
  • the presence of a driving lug generally reduces signs of wear on the plate and thus increases the life of the plate.
  • a centrifugal machine 2 is pivotally mounted in a frame 1. This centrifugal machine 2 is driven by a motor 3.
  • the centrifugal machine is preferably a container with a rotating bottom according to the embodiments already described.
  • a reservoir 4 is arranged above the centrifugal engine 2 and is provided on the bottom with a slide 5. By opening the slide 5, the grinding bodies located in the storage container 4 can be transferred directly into the container of the centrifugal machine 2.
  • a channel-shaped unit 6 is provided, which consists of a separating plate 7 and a separating screen 8. Corresponding guide walls are provided on the side. This unit 6 is set in vibration via an eccentric drive 9.
  • the separating plate 7 represents a buffer area or buffer container into which the content of the centrifugal machine is tilted after a processing operation has ended. From the separating plate or the buffer container 7, the grinding bodies and processed objects, due to the vibratory movement of the unit 6, reach the separating screen 8, where the processed objects are separated from the chips.
  • the separating screen 8 can be designed to be insertable, so that different part sizes can be taken into account.
  • the processed parts are discharged at the end of the unit 6.
  • the chips or grinding bodies falling through the sieve 8 pass via a short conveyor belt 13 into a conveyor belt funnel 10, from which they are transferred to the storage container 4 via a connecting conveyor belt 11 and a further transverse conveyor belt 12.
  • the compact arrangement of the various conveyor belts 11, 12, 13 required for transport and the vibrating trough 6 comprising the separating plate 7 and the separating screen 8 can be clearly seen in the top view according to FIG. 2.
  • centrifugal machine 2 can be operated practically with extremely short downtimes, since the separation process is completely decoupled and after each dumping process in the storage container 4 the required amount of grinding wheels is already available, which can be obtained by simply opening the front advice container can be transferred to the centrifugal machine 2 via the slide 5.
  • the integral design of the buffer tank and separating sieve leads to a compact structure, a simple construction and a safe mode of operation, the arrangement of all components of the system in a common frame providing the additional advantage that vibrations and the like occur in an operating part of the functioning of Do not disturb other parts of the company, but rather support them.
  • the invention achieves a decisive increase in performance of the overall system, the addition of fresh grinding media being particularly simple and problem-free due to the conveyor unit provided between the separating screen section and the storage container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP84104719A 1983-05-11 1984-04-26 Centrifugeuse Withdrawn EP0125545A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3317311 1983-05-11
DE19833317311 DE3317311A1 (de) 1983-05-11 1983-05-11 Fliehkraftschleifmaschine
DE3320891 1983-06-09
DE19833320891 DE3320891A1 (de) 1983-06-09 1983-06-09 Fliehkraft-gleitschliffanlage

Publications (2)

Publication Number Publication Date
EP0125545A2 true EP0125545A2 (fr) 1984-11-21
EP0125545A3 EP0125545A3 (fr) 1986-08-13

Family

ID=25810711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104719A Withdrawn EP0125545A3 (fr) 1983-05-11 1984-04-26 Centrifugeuse

Country Status (1)

Country Link
EP (1) EP0125545A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0220729A2 (fr) * 1985-10-30 1987-05-06 Rösler Gleitschlifftechnik Maschinenbau und Technische Keramik GmbH Installation de polissage fonctionnant par charges
EP0222050A1 (fr) * 1984-10-15 1987-05-20 Metallgesellschaft Ag Procédé et appareil pour le lissage, polissage et finissage de composants et de pièces métalliques

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH381A (de) * 1889-01-29 1889-03-19 Ludwig Keyling Apparat zur Erzeugung von Schrot, resp. Metallkugeln aus Metall aller Art
US3898774A (en) * 1972-07-11 1975-08-12 Rampe Research Continuous feed vibratory finishing method with discharge rate controlled by operation of tub discharge closure
GB1446414A (en) * 1972-10-30 1976-08-18 Ici Ltd Rotor and stator assemblies
JPS57184667A (en) * 1981-05-07 1982-11-13 Toyota Motor Corp Barrel tank in barrel machining device
JPS57189766A (en) * 1981-05-15 1982-11-22 Toyota Motor Corp Barrel processing device
JPS57205067A (en) * 1981-06-08 1982-12-16 Toyota Motor Corp Barrel for barrel-finishing equipment
FR2511628A1 (fr) * 1981-08-20 1983-02-25 Parker Ste Continentale Dispositif pour la maintenance d'une installation de tribofinition, et notamment de son lit d'elements abrasifs

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH381A (de) * 1889-01-29 1889-03-19 Ludwig Keyling Apparat zur Erzeugung von Schrot, resp. Metallkugeln aus Metall aller Art
US3898774A (en) * 1972-07-11 1975-08-12 Rampe Research Continuous feed vibratory finishing method with discharge rate controlled by operation of tub discharge closure
GB1446414A (en) * 1972-10-30 1976-08-18 Ici Ltd Rotor and stator assemblies
JPS57184667A (en) * 1981-05-07 1982-11-13 Toyota Motor Corp Barrel tank in barrel machining device
JPS57189766A (en) * 1981-05-15 1982-11-22 Toyota Motor Corp Barrel processing device
JPS57205067A (en) * 1981-06-08 1982-12-16 Toyota Motor Corp Barrel for barrel-finishing equipment
FR2511628A1 (fr) * 1981-08-20 1983-02-25 Parker Ste Continentale Dispositif pour la maintenance d'une installation de tribofinition, et notamment de son lit d'elements abrasifs

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, Band 7, Nr. 29 (M-191)[1174], 5. Februar 1983; & JP-A-57 184 667 (TOYOTA JIDOSHA KOGYO K.K.) 13.11.1982 *
PATENTS ABSTRACTS OF JAPAN, Band 7, Nr. 37 (M-193)[1182], 15. Februar 1983; & JP-A-57 189 766 (TOYOTA JIDOSHA KOGYO K.K.) 22.11.1982 *
PATENTS ABSTRACTS OF JAPAN, Band 7, Nr. 59 (M-199)[1204], 11. März 1983; & JP-A-57 205 067 (TOYOTA JIDOSHA KOGYO K.K.) 16.12.1982 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0222050A1 (fr) * 1984-10-15 1987-05-20 Metallgesellschaft Ag Procédé et appareil pour le lissage, polissage et finissage de composants et de pièces métalliques
EP0220729A2 (fr) * 1985-10-30 1987-05-06 Rösler Gleitschlifftechnik Maschinenbau und Technische Keramik GmbH Installation de polissage fonctionnant par charges
DE3538614A1 (de) * 1985-10-30 1987-05-07 Roesler Gleitschlifftech Masch Anlage zur gleitschliffbearbeitung im chargenbetrieb
EP0220729A3 (fr) * 1985-10-30 1989-03-22 Rösler Gleitschlifftechnik Maschinenbau und Technische Keramik GmbH Installation de polissage fonctionnant par charges

Also Published As

Publication number Publication date
EP0125545A3 (fr) 1986-08-13

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Inventor name: EICHENBERG, NORBERT