EP0089620A2 - Machine de traîtement au jet abrasif avec au moins un dispositif rotatif de support de pièces - Google Patents

Machine de traîtement au jet abrasif avec au moins un dispositif rotatif de support de pièces Download PDF

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Publication number
EP0089620A2
EP0089620A2 EP83102627A EP83102627A EP0089620A2 EP 0089620 A2 EP0089620 A2 EP 0089620A2 EP 83102627 A EP83102627 A EP 83102627A EP 83102627 A EP83102627 A EP 83102627A EP 0089620 A2 EP0089620 A2 EP 0089620A2
Authority
EP
European Patent Office
Prior art keywords
rotation
axis
centrifugal
workpiece
machine according
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Withdrawn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
EP83102627A
Other languages
German (de)
English (en)
Other versions
EP0089620A3 (fr
Inventor
Wolfgang Walter
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.)
Georg Fischer AG
Original Assignee
Georg Fischer 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
Application filed by Georg Fischer AG filed Critical Georg Fischer AG
Publication of EP0089620A2 publication Critical patent/EP0089620A2/fr
Publication of EP0089620A3 publication Critical patent/EP0089620A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
    • B24C3/083—Transfer or feeding devices; Accessories therefor

Definitions

  • the invention relates to a centrifugal jet machine as characterized in the preamble of claim 1.
  • centrifugal jet machines have become known, e.g. as a continuous overhead conveyor centrifugal blasting machine with a workpiece receiving device rotating about a vertical axis (US Pat. No. 3,722,710) or a workpiece receiving device rotating about a horizontal axis (DE-C3 22 12 487, US Pat. No. 3,495,720).
  • the object of the present invention is to provide a centrifugal blasting machine of the type mentioned at the outset, in which no additional method steps and devices for emptying the cavities of blasting agent and other material are required, and in which, with the smallest possible number of devices for generating blasting agent jets, a good jet - or cleaning effect is achieved at all required points on the workpieces.
  • the rotation of the workpiece or workpieces about a first horizontally arranged axis of rotation and about a second axis of rotation arranged at right angles or approximately at right angles to it, which simultaneously rotates about the first axis of rotation means that each surface point of a workpiece is repeatedly at the lowest point of the rotational axis. Envelope surface reaches and thereby a uniform blasting treatment and at the same time the best possible emptying of internal blasting media and other material. Additional facilities for emptying are therefore not required.
  • the parallel arrangement of the centrifugal wheel axis to the first axis of rotation of the workpiece holding device, in which case the plane of the fan beam runs perpendicular to the first axis of rotation, means that each point of the workpiece is repeatedly fully turned towards the incident jet of a centrifugal wheel, as a result of which the best possible and most uniform jet effect is achieved. This results in a reduction in the number of centrifugal wheels otherwise required and simplification of the centrifugal jet machine.
  • the duration and speed of each of the two rotary movements can be optimally adjusted independently of one another radiating workpiece and / or its throughput speed can be adjusted by the centrifugal jet machine.
  • the workpiece or workpieces can be held in a basket or adapted cage, the loading and unloading openings having to be able to be closed due to the rotation about two axes of rotation.
  • Rectangular workpieces with end faces such as Motor blocks can advantageously be held between two rotatable workpiece holders by axial clamping, as a result of which the centrifugal jets can hit the workpiece surface undisturbed.
  • a centrifugal blasting machine When the centrifugal blasting machine is designed as a continuous blasting machine, a plurality of workpiece holding devices are transported continuously or intermittently through the blasting chamber by means of a conveying device, preferably a suspended conveyor, a simple drive for the two axes of rotation then being provided when this is operatively connected to the feed movement of the conveyor.
  • a conveying device preferably a suspended conveyor
  • FIG. 1 and 2 show partial sections of a continuous centrifugal blasting machine with workpiece holding devices 3 that can be transported through a blasting chamber 1 by means of a hanging conveyor 2 , preferably arranged at a right angle, rotatably arranged second axis of rotation 6, the second axis of rotation 6 rotating about the first axis of rotation 5.
  • the load suspension 4 has an angular support 7, which is slidably suspended on a rail 10 by means of rollers 9 arranged on a linkage 8 and is connected e.g. a chain.
  • An angular frame 12 is fastened to the carrier 7 so as to be rotatable about the first axis of rotation 5 and is provided with the workpiece receiving device 3 designed as a basket or cage 13 and rotating about the second axis of rotation 6.
  • the cage 13 has an opening 15 on one end face for the insertion of the workpiece 14, which opening can be shut off by a lattice door 16 holding the workpiece.
  • An automatic loading and unloading of the workpieces 14 is possible with the arrangement of a controllable actuating means for the lattice door 16, preferably in the horizontal position of the second axis of rotation 6 outside the blasting chamber 1, whereby a fully automatic operation of the centrifugal blasting system can be achieved.
  • the two axes of rotation 5 and 6 are driven by a common drive 17 depending on the feed movement of the load suspension device 4.
  • a chain wheel 18 arranged on the load suspension 4 engages in a stationary chain 19 arranged above the blasting chamber 1 and drives the drive wheel 21 of a traction mechanism drive such as a chain or, as shown, a belt drive 22 via a shaft 20.
  • the belt drive 22 is deflected by rollers 23 and drives a wheel 24 which is fixedly connected to the frame 12, as a result of which the frame 12 is set in rotation about the first axis of rotation 5.
  • a further wheel 25 is arranged in the frame 12 which is fixedly connected to the angular support 7 and which is dependent on it Rolling, arranged in the frame 12 belt drive 26 via pulleys 27 drives the wheel 28 fixedly connected to a shaft 29 of the second axis of rotation 6.
  • the cage 13 is easily connected to the shaft 29.
  • a separate drive e.g. arranged by means of a rotating chain drive above the blasting chamber.
  • each of the two axes of rotation 5 and 6 with an independent drive, both of which can be arranged on the carrier 7 or one of them on the frame 12.
  • Independent drives of this type require energy transmission devices such as, for example, busbars, but offer the possibility of individually controllable rotational movements of the workpiece, so that in particular the drumming out in a movement sequence that can be determined for each different workpiece, for example computer-controlled.
  • At least one centrifugal wheel 30 is arranged on the blasting chamber 1, the centrifugal wheel axis 31 running parallel to the first axis of rotation 5.
  • the beam fan 32 thus lies in a plane running perpendicular to the axis of rotation 5, whereby a particularly good and uniform beam effect is achieved on the workpiece.
  • FIG. 3 shows an embodiment variant of the workpiece holding device 3, the workpiece 14 being held clamped on the face between two workpiece holders 40, 40a arranged at a distance.
  • One of the workpiece holders 40a is freely rotatable and axially displaceable on a leg 42 of a U-shaped frame 41, the holder 40a being able to be pressed against the workpiece 14 by means of a spring 44 and for loading and unloading by means of a piston-cylinder unit 45 can be lifted off the workpiece.
  • the other workpiece holder 40 is designed as a rotary driver and can be driven by means of a bevel gear mechanism 46 and a chain or belt drive 47 depending on the rotary drive of the frame 41 about the first axis of rotation 5 by a rolling motion as already described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Feeding Of Workpieces (AREA)
  • Centrifugal Separators (AREA)
  • Specific Conveyance Elements (AREA)
EP83102627A 1982-03-19 1983-03-17 Machine de traítement au jet abrasif avec au moins un dispositif rotatif de support de pièces Withdrawn EP0089620A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH170382 1982-03-19
CH1703/82 1982-03-19

Publications (2)

Publication Number Publication Date
EP0089620A2 true EP0089620A2 (fr) 1983-09-28
EP0089620A3 EP0089620A3 (fr) 1983-12-21

Family

ID=4216626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102627A Withdrawn EP0089620A3 (fr) 1982-03-19 1983-03-17 Machine de traítement au jet abrasif avec au moins un dispositif rotatif de support de pièces

Country Status (2)

Country Link
EP (1) EP0089620A3 (fr)
ES (1) ES8403352A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848122A (en) * 1987-07-20 1989-07-18 Chemtronics Method and apparatus for deburring using shot
US5197235A (en) * 1990-06-01 1993-03-30 Schlick-Roto-Jet Maschinenbau Gmbh Ancillary device for removing abrasive from large sand blasted workpieces

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3495720A (en) * 1966-04-19 1970-02-17 Carborundum Co Suspended conveyor trolley handling device
CH440016A (de) * 1966-06-30 1967-07-15 Fischer Ag Georg Schleuderstrahlmaschine mit einer in vertikaler Richtung hin- und herbeweglichen Schleuderradeinheit
DE2020516A1 (de) * 1970-04-27 1971-11-25 Walker Helen H Kugel- oder Sandstrahlvorrichtung
US3722710A (en) * 1970-10-23 1973-03-27 Carborundum Co Work carrier for abrasive cleaning arrangements
DE2813705A1 (de) * 1977-04-01 1978-10-05 Tilghman Wheelabrator Ltd Vorrichtung zum sandstrahlen von werkstuecken
CH638414A5 (en) * 1979-04-04 1983-09-30 Fischer Ag Georg Method and apparatus for emptying workpieces containing cavities, in particular castings
DE3115730A1 (de) * 1981-04-18 1982-12-02 BMD Badische Maschinenfabrik Durlach GmbH, 7500 Karlsruhe Verfahren und vorrichtung zum kuehlen und reinigen von metallguss.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848122A (en) * 1987-07-20 1989-07-18 Chemtronics Method and apparatus for deburring using shot
US5197235A (en) * 1990-06-01 1993-03-30 Schlick-Roto-Jet Maschinenbau Gmbh Ancillary device for removing abrasive from large sand blasted workpieces

Also Published As

Publication number Publication date
ES520494A0 (es) 1984-03-16
ES8403352A1 (es) 1984-03-16
EP0089620A3 (fr) 1983-12-21

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Inventor name: WALTER, WOLFGANG