EP0004886B1 - Roue centrifuge pour dispositifs de projection d'abrasif - Google Patents

Roue centrifuge pour dispositifs de projection d'abrasif Download PDF

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Publication number
EP0004886B1
EP0004886B1 EP79100943A EP79100943A EP0004886B1 EP 0004886 B1 EP0004886 B1 EP 0004886B1 EP 79100943 A EP79100943 A EP 79100943A EP 79100943 A EP79100943 A EP 79100943A EP 0004886 B1 EP0004886 B1 EP 0004886B1
Authority
EP
European Patent Office
Prior art keywords
flinger
guide
wheel
clamping elements
centrifugal
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
Application number
EP79100943A
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German (de)
English (en)
Other versions
EP0004886A1 (fr
Inventor
Wolfgang Jahn
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.)
Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag
Original Assignee
Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag
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Filing date
Publication date
Application filed by Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag filed Critical Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag
Publication of EP0004886A1 publication Critical patent/EP0004886A1/fr
Application granted granted Critical
Publication of EP0004886B1 publication Critical patent/EP0004886B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/06—Impeller wheels; Rotor blades therefor
    • B24C5/062—Rotor blades or vanes; Locking means therefor

Definitions

  • the invention relates to a centrifugal wheel for abrasive systems with a guide disk wheel and with throwing vanes fastened to the guide disk wheel by means of detents designed as tensioning elements, each of which has rib-shaped side edges and both symmetrically to the central plane lying in its blade surface and to the two perpendicularly on the blade surface standing, the blade longitudinal axis and the blade transverse axis containing planes is formed, wherein recesses are arranged in the rib-shaped side edges for receiving the clamping elements.
  • abrasives are blasted onto workpieces to be machined in cleaning, descaling and other centrifugal blasting systems.
  • the blasting media are guided in radial direction, accelerated and thrown outwards via their throwing blades.
  • the throwing blades are subject to severe wear due to the abrasive that strikes them and flows at high speed, which is why they have to be replaced at certain intervals.
  • each throwing blade can be rotated through 180 ° both about its longitudinal axis and about its transverse axis and can be inserted in the guide disc wheel in each of these positions.
  • the centrifugal wheel can also be moved in both directions.
  • each locking device for one of the throwing blades consists of an elastic sleeve in which a holding element is held in the form of a bolt which engages in recesses which are introduced diametrically opposite one another from the narrow side into the edges of the throwing blade.
  • an anchor is formed on the longitudinal narrow side outside the rib-shaped side edge, which engages with wedge-shaped engagement surfaces in receptacles of the wheel disks.
  • both the throwing shovel itself and its locking device are constructed and assembled in a complex manner.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the task of simplifying both the throwing shovel itself and its locking in a centrifugal wheel for abrasive systems.
  • a throwing scoop 1 used in the invention essentially consists of a rectangular base plate 2, the two sides of which serve as a blasting agent running surface.
  • the base plate 2 has a rib-shaped side edge 3 on each longitudinal edge.
  • the cross section of the throwing blade 1 thus takes the form of a double T.
  • the transitions from the base plate 2 to the side edges 3 are rounded, as required by the manufacturing processes of forging or casting.
  • each side edge 3 has a recess 4 on each side, which is essentially semicircular.
  • the recess 4 serves to receive an eccentric tensioning element 6 to be described.
  • the throwing blade 1 is completely symmetrical both with respect to its transverse axis A-A and with respect to its longitudinal axis B-B.
  • Each eccentric clamping element 6 has the basic shape of a shaft 7.
  • a spiral-widening cam 8 is provided in the middle of the shaft 7.
  • a shoulder 9 is provided on each end face of the shaft. The areas formed by the shoulders 9 lie in the same plane. This level also delimits the cam 8 on one side.
  • the cam takes about 145 ° of the circumference of the shaft 7.
  • the shaft 7 is provided with a bore 10 at an acute angle to the plane defined by the shoulders 9.
  • the throwing blade 1 is inserted into a double guide disk wheel 13 having two guide disks 12.
  • the double idler wheel 13 is made as a casting.
  • Four to eight grooves 14 are cast radially in the double guide disk wheel 13.
  • recesses 15 are provided for receiving the eccentric clamping elements 6 on the same diameter with respect to the pivot point of the double idler wheel.
  • One of the eccentric clamping elements 6 is inserted in mutually assigned recesses 15 in the guide disks 12 within the same groove 14, specifically in such a way that the shoulders 9 lie in the radial direction of the double guide disk wheel 13.
  • the eccentric clamping element 6 is then pivoted so that the non-flattened end region of the shaft 7 is screwed into the recess 4. This turning takes place until the cam 8 bears against the base plate 2 and can be pressed on in the manner of a locking mechanism.
  • the cam 8 engages with respect to the pivot point of the double guide disk wheel 13 from below, so that when the wheel is rotated under the action of centrifugal force on the throwing blade 1, the eccentric clamping element 6 is pressed more firmly onto the throwing blade 1.
  • the double disc wheel 13 is part of a centrifugal wheel 17.
  • the centrifugal wheel 17 is driven by a shaft 18.
  • a hub 20 provided with a flange 19 is fastened on the shaft 18 by means of a conical bushing 21 and a wedge 22.
  • the double guide disc wheel 13 is centered on the hub 20 and connected to the flange 19 by means of a screw connection 23. At least two, at most eight, throwing blades 1 are connected to the double guide disc wheel via the eccentric clamping elements 6.
  • the centrifugal wheel 17 rotates in a housing 24.
  • a distributor bushing 26, also called an impeller cage, is also provided with the drive shaft 18, specifically via a groove and screw connection 15 engaging in the axis of rotation of the shaft 18.
  • the distributor bushing 26 has an opening in the axial direction, in which an inlet pipe 27 opens, and also openings that run in the radial direction.
  • the blasting agent arriving from the inlet pipe 27 is distributed radially in the direction of the double guide disk wheel 13 with the aid of the distributor bushing 26.
  • the distributor bushing 26 takes over the task of blasting agent distribution and metering. By adjusting the guide sleeve 28, the direction of discharge of the blasting agent is controlled. ,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (5)

1. Roue de projection pour grenailleuses qui comporte une roue à disques de guidage (13) et des aubes de projection (1) fixées à la roue à disques de guidage au moyen de dispositifs de blocage réalisés en tant qu'organes de serrage, chacune des aubes de projection présentant des bords latéraux (3) en forme de nervures et étant réalisée symétriquement tant par rapport au plan médian situé dans l'étendue de l'aube que par rapport aux deux plans perpendiculaires à l'étendue de l'aube et contenant l'axe longitudinal (B-B) et l'axe transversal (A-A) de l'aube, lesquels bords latéraux (3) en forme de nervures présentent des évidements (4) pour recevoir les organes de serrage, caractérisée en ce que les évidements (4) sont réalisés sous une forme sensiblement semi-circulaire afin de recevoir les parties frontales, munies d'épaulements aplatis (9), d'organes de serrage excentriques (6).
2. Roue de projection suivant la revendication 1, dans laquelle les aubes de projection (1) sont fixées dans une roue à double disque de guidage (13) dont les deux disques de guidage (12) sont espacés et reliés de manière fixe, caractérisée en ce que les deux disques de guidage (12) sont réalisés sous la forme d'une pièce coulée dans laquelle sont prévues, réparties en forme d'étoile, quatre à huit rainures (14) destinées à recevoir chacune une des aubes de projection (1) et les organes de serrage excentriques (6).
3. Roue de projection suivant la revendication 2, caractérisée en ce que dans chaque rainure (14) au niveau de l'axe transversal (A-A) de l'aube de projection (1) mise en place, cet axe étant dans toutes les rainures situé à une même distance de l'axe de rotation de la roue à double disque de guidage (13), sont prévus, de part et d'autre de l'aube de projection (1), dans les disques de guidage (12) des évidements (15) destinés à recevoir un des organes de serrage excentriques (6).
4. Roue de projection suivant la revendication 3, caractérisée en ce que chaque fois l'un des organes de serrage (6) est introduit librement dans l'une des rainures (14) ménagées en forme d'étoile dans les disques de guidage et est ensuite placé, en fonction du sens de rotation de la roue à double disque de guidage (13), dans deux évidements coaxiaux (15).
5. Roue de projection suivant l'une quelconque des revendications 1 à 4, caractérisée en ce que l'organe de serrage excentrique (6), présenté sous forme d'arbre (7), est muni d'une saillie centrale (8) s'élargissant en forme de spirale et, dans chaque partie frontale, d'un épaulement aplati (9) situé dans le même plan que l'autre épaulement ainsi que d'un alésage (10) s'étendant sous un angle aigu par rapport au plan déterminé par les épaulements (9).
EP79100943A 1978-04-17 1979-03-29 Roue centrifuge pour dispositifs de projection d'abrasif Expired EP0004886B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2816602 1978-04-17
DE19782816602 DE2816602A1 (de) 1978-04-17 1978-04-17 Schleuderrad fuer strahlmittelanlagen

Publications (2)

Publication Number Publication Date
EP0004886A1 EP0004886A1 (fr) 1979-10-31
EP0004886B1 true EP0004886B1 (fr) 1981-11-04

Family

ID=6037183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100943A Expired EP0004886B1 (fr) 1978-04-17 1979-03-29 Roue centrifuge pour dispositifs de projection d'abrasif

Country Status (5)

Country Link
US (1) US4227351A (fr)
EP (1) EP0004886B1 (fr)
AT (1) AT359859B (fr)
DE (1) DE2816602A1 (fr)
DK (1) DK147934C (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2929400A1 (de) * 1979-07-20 1981-02-12 Vogel & Schemmann Masch Schleuderrad fuer strahlmittelanlagen
DE3004857C2 (de) * 1980-02-09 1987-04-30 Maschinen- U. Werkzeugfabrik Kabel Vogel & Schemmann Ag, 5800 Hagen Strahlmittel-Schleuderrad
DE3248332C2 (de) * 1982-12-28 1986-11-27 Maschinen- U. Werkzeugfabrik Kabel Vogel & Schemmann Ag, 5800 Hagen Strahlmittel-Schleuderrad
CZ294917B6 (cs) * 2001-03-05 2005-04-13 Jost Wadephul Zařízení pro naplňování vstřikovaných prostředků do odstředivého lopatkového kola
KR101984062B1 (ko) * 2018-12-06 2019-06-04 (주)대코 쇼트피닝 머신의 임펠러용 블레이드 제조방법 및 임펠러용 블레이드

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582702A (en) * 1936-05-13 1952-01-15 Pangborn Corp Abrading apparatus
US2119813A (en) * 1936-05-13 1938-06-07 Pangborn Corp Abrading apparatus
DE767578C (de) 1937-02-04 1953-04-09 A Sisson Lehmann S A Ets Sandstrahlgeblaeseartig wirkende Vorrichtung mit Schleuderrad zum Putzen von Werkstuecken
DE834340C (de) * 1945-04-25 1952-03-17 Fischer Ag Georg Schleuderrad zum Schleudern von Schleudergut
US2819562A (en) * 1956-05-07 1958-01-14 Wheelabrator Corp Centrifugal blasting wheel and blades for use in same
US2869289A (en) * 1957-01-24 1959-01-20 Pangborn Corp Reversible centrifugal blasting method and apparatus
CH412613A (de) * 1962-11-16 1966-04-30 Geisseler Max Schleuderrad
DE1677143B1 (de) * 1962-12-11 1969-09-11 Badische Maschf Gmbh Schleuderrad mit loesbarer Schaufelbefestigung
US3352064A (en) * 1965-02-01 1967-11-14 Wheelabrator Corp Lock system for blasting-machine blades
US3444651A (en) * 1966-11-30 1969-05-20 Max Geisseler Centrifuging wheel
GB1320641A (en) * 1971-03-29 1973-06-20 Vacu Blast Ltd Impelling wheel for particulate material
US3785105A (en) * 1972-04-05 1974-01-15 Wheelabrator Frye Inc Centrifugal blasting wheel
GB1500092A (en) * 1975-10-24 1978-02-08 Tilghman Wheelabrator Ltd Blast impellor wheels

Also Published As

Publication number Publication date
DE2816602A1 (de) 1979-10-25
DK154479A (da) 1979-10-18
ATA218479A (de) 1980-04-15
DK147934C (da) 1985-08-19
EP0004886A1 (fr) 1979-10-31
DK147934B (da) 1985-01-14
AT359859B (de) 1980-12-10
US4227351A (en) 1980-10-14

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