EP0872309A2 - Schleuderrad für eine Schleuderstrahlanlage zur Oberflächenbehandlung von Gegenständen - Google Patents
Schleuderrad für eine Schleuderstrahlanlage zur Oberflächenbehandlung von Gegenständen Download PDFInfo
- Publication number
- EP0872309A2 EP0872309A2 EP98104991A EP98104991A EP0872309A2 EP 0872309 A2 EP0872309 A2 EP 0872309A2 EP 98104991 A EP98104991 A EP 98104991A EP 98104991 A EP98104991 A EP 98104991A EP 0872309 A2 EP0872309 A2 EP 0872309A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- recesses
- centrifugal wheel
- blasting
- countersunk head
- wheel
- 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- Withdrawn
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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
Definitions
- centrifugal wheel is known for example from DE 44 10 628 C2.
- the blades of the impeller guided in and through radial grooves of the side windows Loosen a single hexagon socket head screw executed locking screw interchangeable, which is mounted in a depression in the side window.
- the locking screws in Use a considerable amount of wear due to contact with subject to abrasive abrasives.
- the hexagon socket is on the top of the screw head rounded in the screw head and expanded in scope.
- the circle and perimeter are only slightly different deviate, even a small material removal leads to Circumference of the hexagon socket so that a positive Torque transmission through the tool is no longer possible is.
- the countersink depth of the hexagon socket reduced, so that a total disassembly of one lock screw subject to such wear with the provided screwing tools is not feasible.
- the locking screws must therefore be replaced early done so that there are shorter for the locking screws Downtimes result than for the blades themselves.
- the invention has for its object the above Eliminate disadvantages and an advanced centrifugal wheel to create where the locking screws for the Blading with screwing tools even after considerable wear are removable.
- the advantages achieved with the invention are in particular in that by installing such locking screws the disassembly of the blades regardless of the depth of wear that has occurred on the screw head at any time is ensured.
- Through the holes or recesses fingers of a corresponding plugged into the screw head Tool is a positive connection at all times guaranteed.
- one Cylinder head screws according to the standard have the holes or recesses the locking screw according to the invention great depth, so that despite wear of the screw head the tool fingers can be inserted deeply and are secure in the Engagement.
- By arranging the holes or Recesses on the circumference of the screw head are several Starting points for the Finger of the tool created so that a larger one Lever arm in relation to the screw thread results in at a centrally arranged hexagon socket or screw slot.
- the locking screws made of tempered steel, preferably chrome steel from with a hardness of at least 60 HRC. Corresponding prepared locking screws are wear-resistant and increase the service life of the screws in abrasive blasting media.
- centrifugal wheel 100 in a simplified plan view shown on the side window 7, the usual parts belonging to the centrifugal wheel, such as spacer elements between the side windows, distributor with impeller and the like are not shown.
- the second side window 7 ' lies exactly below the first (7).
- FIG. 2 shows how such a fastening arrangement is procured in detail.
- the locking screw 10 is introduced into the groove area of the side window 7, 7 ' Bore 5 in a machined in the blade 6 Threaded hole 2 screwed tight. Possibly points the blade 6 made from a rolled profile is widening Flanks 8,8 'adapted to the grooves 16, 16' are and the one incorporated in the flank area Seat 13 putting on a countersunk head 12 of the locking screw 10 enable.
- the seat 13 has a slight depth, due to the thickness of the side window 7,7 ', the dimensions of the flank area of the blade 6 and the size of the Countersunk head. Accordingly, the countersunk head 12 becomes partial from the seat 13 and partly from that in the side window incorporated hole 5 so that the countersunk head does not protrude outwards from the side window. Possible is, of course, on the seat 13 on the flank sides of the To renounce blades 6. However, this embodiment is with regard to those occurring in this case Shear forces on the threaded pin of the locking screw 10 less beneficial.
- the most important feature in the aforementioned countersunk head 12 is that in connection with a corresponding tool 20th (shown schematically in Fig. 2) by positive engagement safe torque transmission, regardless of that Degree of wear, guaranteed and so the locking screw 10 can be unscrewed at any time.
- their countersunk head 12 has three in equidistant A arranged on the circumference 9 of the countersunk head, through recesses 14 into which the fingers 21 of the Tool 20 are inserted.
- FIG. 1 and 3b A second embodiment of the countersunk head 12 'of the locking screw 10 is shown in Figures 1 and 3b. There are two through holes 4 in the countersunk head incorporated, the top view of the countersunk head is eccentric on its center line and parallel to the axis of the axis the locking screw.
- the locking screws 10 are advantageously made of one Chromium steel manufactured and subsequently heat treated for Achieving a hardness of at least 60 HRC.
- the locking screws 10 can also be used to attach the Impellers on a shaft journal of the centrifugal wheel Find use.
Abstract
Description
- mehrere radial zur Drehachse des Schleuderrades angeordnete Schaufeln an ihren Flanken zwischen zwei Seitenscheiben über Sicherungsschrauben gehalten sind, die in an Flankenseiten der Schaufeln eingebrachten Gewindebohrungen verschraubt sind,
- die Flanken in die in den Seitenscheiben eingearbeiteten Nuten eingesetzt sind,
- die Seitenscheiben an ihren Flanken mit wenigstens je einer mit der Gewindebohrung koinzidierenden Bohrung, in der ein Senkkopf der Sicherungsschraube aufgenommen ist, vesehen sind.
- Fig. 1
- einen Teil eines Schleuderrads in Seitenansicht;
- Fig. 2
- ein Detail der Befestigung einer Schaufel an einer Seitenscheibe in gegegenüber der Fig. 1 vergrößerter Darstellung;
- Fig. 3a und 3b
- zwei Ausführungsformen eines Senkkopfes der Sicherungsschraube in Draufsicht.
Claims (3)
- Schleuderrad (100) für eine Schleuderstrahlanlage zur Oberflächenbehandlung von Gegenständen, bei demmehrere radial zur Drehachse des Schleuderrades angeordnete Schaufeln (6) an ihren Flanken (8,8') zwischen zwei Seitenscheiben (7,7') über Sicherungsschrauben (10) gehalten sind, die in an Flankenseiten der Schaufeln eingebrachten Gewindebohrungen (2) verschraubt sind,die Flanken (8,8') in die in den Seitenscheiben (7,7') eingearbeiteten Nuten (16,16') eingesetzt sind,die Seitenscheiben (7,7') an ihren Flanken mit wenigstens je einer mit der Gewindebohrung (2) koinzidierenden Bohrung (5), in der ein Senkkopf (12) der Sicherungsschraube (10) aufgenommen ist, vesehen sind,
- Schleuderrad nach Anspruch 1, dadurch gekennzeichnet, daß die Bohrungen (4) oder Ausnehmungen (14) peripher in gleichen Abständen voneinander angeordnet sind.
- Schleuderrad nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Sicherungsschrauben (10) aus einem vergüteten Stahl, vorzugsweise aus Chromstahl von einer Härte wenigstens 60 HRC hergestellt sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29706888U DE29706888U1 (de) | 1997-04-16 | 1997-04-16 | Schleuderrad für eine Schleuderstrahlanlage zur Oberflächenbehandlung von Gegenständen |
DE29706888U | 1997-04-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0872309A2 true EP0872309A2 (de) | 1998-10-21 |
EP0872309A3 EP0872309A3 (de) | 2001-11-07 |
Family
ID=8039100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98104991A Withdrawn EP0872309A3 (de) | 1997-04-16 | 1998-03-19 | Schleuderrad für eine Schleuderstrahlanlage zur Oberflächenbehandlung von Gegenständen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0872309A3 (de) |
DE (1) | DE29706888U1 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2161888A1 (de) * | 1971-12-14 | 1973-06-20 | Rudolf Matzke | Befestigung der wurfschaufeln an strahlmittelschleuderscheiben |
DE3248332A1 (de) * | 1982-12-28 | 1984-07-05 | Maschinen- U. Werkzeugfabrik Kabel Vogel & Schemmann Ag, 5800 Hagen | Schleuderrad fuer strahlmittelanlagen |
DE8509065U1 (de) * | 1985-03-27 | 1985-08-08 | Kalle, Viktor, 5885 Schalksmühle | Befestigungselement zur Verwendung in einer Gewindeverbindung |
US5019079A (en) * | 1989-11-20 | 1991-05-28 | Zimmer, Inc. | Bone screw |
DE4244102A1 (en) * | 1992-03-10 | 1993-09-23 | Uwe Metzer Holz Montagebau | Domed nut for threaded fixture to wood, plastics and metal - has underside of head at angle greater than 90 deg., head has three equispaced holes as location for special tool and threads are coated in plastics |
DE4410628A1 (de) * | 1994-03-26 | 1995-09-28 | Schlick Roto Jet Masch | Schleuderrad mit fixierten Schleuderrad-Schaufeln |
-
1997
- 1997-04-16 DE DE29706888U patent/DE29706888U1/de not_active Expired - Lifetime
-
1998
- 1998-03-19 EP EP98104991A patent/EP0872309A3/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2161888A1 (de) * | 1971-12-14 | 1973-06-20 | Rudolf Matzke | Befestigung der wurfschaufeln an strahlmittelschleuderscheiben |
DE3248332A1 (de) * | 1982-12-28 | 1984-07-05 | Maschinen- U. Werkzeugfabrik Kabel Vogel & Schemmann Ag, 5800 Hagen | Schleuderrad fuer strahlmittelanlagen |
DE8509065U1 (de) * | 1985-03-27 | 1985-08-08 | Kalle, Viktor, 5885 Schalksmühle | Befestigungselement zur Verwendung in einer Gewindeverbindung |
US5019079A (en) * | 1989-11-20 | 1991-05-28 | Zimmer, Inc. | Bone screw |
DE4244102A1 (en) * | 1992-03-10 | 1993-09-23 | Uwe Metzer Holz Montagebau | Domed nut for threaded fixture to wood, plastics and metal - has underside of head at angle greater than 90 deg., head has three equispaced holes as location for special tool and threads are coated in plastics |
DE4410628A1 (de) * | 1994-03-26 | 1995-09-28 | Schlick Roto Jet Masch | Schleuderrad mit fixierten Schleuderrad-Schaufeln |
Also Published As
Publication number | Publication date |
---|---|
DE29706888U1 (de) | 1997-05-28 |
EP0872309A3 (de) | 2001-11-07 |
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