EP0094850A2 - Schleuderstrahlmaschine für Werkstücke irgendeiner Form, mittels einer lenkbaren Strahlpistole - Google Patents

Schleuderstrahlmaschine für Werkstücke irgendeiner Form, mittels einer lenkbaren Strahlpistole Download PDF

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Publication number
EP0094850A2
EP0094850A2 EP83400487A EP83400487A EP0094850A2 EP 0094850 A2 EP0094850 A2 EP 0094850A2 EP 83400487 A EP83400487 A EP 83400487A EP 83400487 A EP83400487 A EP 83400487A EP 0094850 A2 EP0094850 A2 EP 0094850A2
Authority
EP
European Patent Office
Prior art keywords
shot
lance
nacelle
nozzle
installation 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Withdrawn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
EP83400487A
Other languages
English (en)
French (fr)
Other versions
EP0094850A3 (de
Inventor
René Gervais
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.)
Promecam Sisson Lehmann SA
Original Assignee
Promecam Sisson Lehmann SA
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 Promecam Sisson Lehmann SA filed Critical Promecam Sisson Lehmann SA
Publication of EP0094850A2 publication Critical patent/EP0094850A2/de
Publication of EP0094850A3 publication Critical patent/EP0094850A3/de
Withdrawn legal-status Critical Current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

Definitions

  • the subject of the present invention is an installation for blasting pieces of any shape, for example foundry pieces to be sanded or forged to be descaled, by means of an adjustable lance capable of projecting a shot of shot onto the piece.
  • Manual shot blasting in the cabin has many drawbacks: first of all, it is painful for the operator, who must remain for the entire duration of shot blasting in a protective suit and must bear the weight of the lance. Moreover, it poses problems in point of view of operator safety, breathing indeed air polluted by dust, and must also withstand the nuisance caused by noise e peening.
  • the object of the invention is therefore to propose a shot peening installation of the kind comprising a movable nacelle, which is arranged so as to eliminate these drawbacks.
  • the installation is characterized in that, in combination, the nacelle is movable vertically on a support frame, the lance comprises a terminal nozzle for projecting the shot articulated on a tubular body of the lance, in order to allow a suitable orientation of the shot of shot, the body of the lance is mounted sliding axially through the vertical wall of the nacelle, and a turbine to protect the glass against the rebounds of shot closing the observation opening of the wall is subject to the latter.
  • the nacelle the axial displacement of the lance through the wall of the nacelle, and the articulation of the projection nozzle on the body of the lance, allows the operator to position the projection nozzle in the three dimensions at all the locations required to allow complete blasting of the entire surface of the part to be blasted, even if this part has a particularly complex shape.
  • the tubular body of the lance is rotatably mounted around its axis on a fixed rotating connector, located on the operator's side relative to the wall of the nacelle, by means of a bearing provided with seals, one of which closes the bottom of an annular chamber opening into the interior of the rotating body and of the fixed connection, and means are provided for injecting a compressed gas during shot blasting in the annular chamber in order to constantly push back the grains of shot tending to enter this chamber and to damage the seal.
  • the compressed gas preferably air
  • the compressed gas is injected into the annular chamber through a conduit, either into a ring for holding the bearings and seals integral with the rotating body, or else into their fixed connection.
  • This second solution has the advantage of securing the compressed gas injection pipe with a fixed part, instead of a rotating part.
  • the nacelle is suspended from a flexible vertical curtain carried by the frame and the ends of which can be wound and unwound simultaneously around horizontal axes, one of which is coupled to a motor d drive, and the sides of the nacelle are guided by vertical rails of the frame.
  • the turbine provided by the invention comprises blades whose angular deviation and the speed of rotation are determined in correlation with the average speed of the grains of shot projected towards the glass, so that these grains are, in almost all cases , caught and returned by the blades before they could reach the window.
  • This turbine is driven by an electric motor fixed to the wall of the nacelle, on the inside of the blasting cabin.
  • the projection nozzle has flexible tubing, one end of which is fixed to the tubular body, and this tubing can be folded in a vertical plane to a position substantially perpendicular to the axis of the body. of the lance by an operable device of the nacelle by the operator.
  • the installation shown in the drawings is intended for the shot peening of parts of any shape to descale them, to sand them or for any other shot peening treatment. It comprises an adjustable lance 1, capable of projecting a shot of shot onto a part 2 (FIG. 2), and a nacelle 3 for supporting the lance 1, which passes through the wall 4 about halfway up.
  • the shot blasting lance 1 therefore has a part outside the shot blasting cabin in which the piece 2 is located, and an inside part to this cabin, comprising a nozzle 5 for projecting shot.
  • the vertical wall 4 of the nacelle 3 is secured to a horizontal platform 6 capable of receiving an operator 7 who controls the orientation and positioning of the lance 1 and its nozzle 5 by appropriate means, in particular a manual flywheel 9 secured of the lance 1, the monitoring of the operation being possible by a glazed opening 11 made in the upper part of the wall 4.
  • the nacelle 3 advantageously comprises a seat 12 ( Figures 3 and 4), allowing the operator 7 to sit.
  • the nacelle 3 is mounted vertically movable on a fixed support frame 13, comprising two vertical uprights 14 connected at their top by a cross member 15, which supports a flexible curtain 16 from which the nacelle 3 is suspended.
  • the latter, suspended from the curtain 16 can slide vertically between the uprights 14 acting as slides, this sliding being guided by means of rollers 17 rolling. on the uprights 14 ( Figures 1 and 3).
  • the ends of the flexible curtain 16 can be rolled up for one and unrolled for the other, simultaneously, around horizontal axes 18, 19, the upper axis 18 being placed on the crosspiece 15 and the lower axis 19 being fixed at the base of the uprights 14.
  • the return rollers 21 and 22 are mounted respectively at the top and at the base of the uprights 14.
  • the vertical movement of the curtain 16 and therefore of the nacelle 3 is controlled by a geared motor 23 placed on the fixed frame 13 in the vicinity of the axis 18 (figure 3).
  • the lance 1 is supplied with shot by a flexible pipe 20 (FIG. 1) in a manner known per se. For each height position of the nacelle 3, the lance 1 has several degrees of freedom which make it possible to properly position the injection nozzle 5 relative to the workpiece.
  • the shot 5 projection nozzle is flexible and articulated on the end of the rigid tubular body 24.
  • the articulation of the nozzle 5 is arranged to allow the latter to pivot from the horizontal to a tilted down position, perpendicular to the axis XX 'of the lance 1.
  • the rigid tubular body 24 of the lance 1 passes through two ball bearings 27 held by spacers 28, rings 29 coaxial with the body 24 and provided with seals 31, the spacers 28 being themselves arranged inside d '' a spherical cap 32 or ball joint. Compressed air is injected between the two bearings 27, by means not shown to prevent the introduction of shot.
  • the cap 32 is housed in a housing 33 which surrounds the body 24 and is fixed to the wall 4, on the outside of the blasting cabin by bolts or screws 34.
  • the wall 4 has an annular opening 35 large enough to allow angular movement of the lance 1 inside a cone whose apex is the center of the ball joint 32 and whose edges pass through the periphery of the annular opening 35.
  • the latter is closed by a flexible membrane 36 fixed on the one hand to the wall 4 by the screws 34 and on the other hand embedded in an annular groove of the ring 29.
  • the amplitude of the angular movement authorized by the ball joint 26 is therefore linked to the angular opening between the center of the ball 32 and the periphery of the opening 35.
  • the nacelle is equipped with a jack 36 (FIG. 3), preferably electric, the body is articulated on the wall 4 under the lance 1, and whose rod 37 is articulated on the ring 29 external to the shot blasting cabin.
  • the control of this electric actuator 36 exempts the operator from making the effort of manually orienting the lance, which he can however do if necessary by using the steering wheel 9.
  • the projection nozzle 5 comprises a flexible tube 38, one end 38a of which is embedded in the end fitting 39 of the body 24, and fixed to this tip by members such as screws 30.
  • the opposite end 38b is also embedded in a rigid end piece 41 to which it is fixed by a tightening ring 42 crossed by screws 43.
  • the length of the flexible tube 38 is determined to allow it to be bent at right angles to the axis XX 'of the rigid body 24 (position shown in Figure 5).
  • the invention provides a device for maneuverable control of the nacelle 3 by the operator.
  • these means for operating the nozzle 5 comprise two cables 44, preferably made of steel, diametrically opposite on either side of the tube 38 and which extend from the end 38b of that -this to a control device 45 mounted on the body 24 inside the nacelle 3.
  • the ends of the cables 38 are clamped between the end piece 41 and the screws 43 which therefore ensure that they are held in place at the end of the flexible tube 38.
  • the cables 44 are held by several collars 46 coaxial with the tubing 38, by means of screws not shown.
  • the cables 44 extend in a reserved annular space between the tubular body 24 and a coaxial socket 47 secured to the body 24 by a series of screws such as 48.
  • the means for controlling the inclination of the flexible nozzle 5 on the axis XX ′, constituted by the device 45 are described below with reference to FIGS. 5 and 7).
  • These means comprise two connecting rods 49 arranged on each side of the tubular body 24, secured by spacers 51 and articulated rotatably on axes 52 supported by the body 24.
  • the spacers 51 are secured with the ends 44a of the cables 44, by winding said ends around the spacers 51, so that the pivoting of the connecting rods 49 around their axes 52 causes a pull on one cable 44 and a push on the other cable, which cause the flexible nozzle 5 to bend.
  • the tilting of the links 49 around their axes 52 is controlled, in this example, by a crank 54 fixed to a threaded rod 55 passing through a piece 56 of connection between the lower ends of the links 49, in which it is supported by bearings 57 sliding in oblong holes 58 of the rods 49.
  • the threaded rod 55 is supported at its ends by the walls of a housing 59 which contains the links 49 and to the walls of which the axes 52 are fixed.
  • the housing 59 is crossed by the tubular body 24, between the links 49, and is supported on this body 24 by a part 61.
  • the flexible tube 38 undergoes downward bending, which increases as the rotation of the crank 54 continues as well as the traction on the lower cable 44 while the upper cable 44 is released. .
  • the rods 49 are in their extreme position visible in FIG. 5, with their lower ends abutting against the wall of the housing 59.
  • the nozzle 5 is then oriented vertically downwards, assuming that the tubular body 24 is horizontal. If the latter has an inclination on the horizontal plane, the axis of the terminal part of the nozzle 5 is perpendicular to the axis XX ′ of the body 24. To return the nozzle 5 to its initial position, the procedure obviously is by rotation of the crank 54 in the opposite direction.
  • the end of the tubular body 24 located in the nacelle 3 is rotatably mounted around the axis of said body 24 on a connector 62 fixed in rotation, integral with a tube 63.
  • This assembly is produced by means of a ball bearing 64 provided with two annular seals 65, 66.
  • the bearing 64 and the seals 65, 66 are held on the connector 62 by rings 67, 68 coaxial with the connector 62, bolts such as 69 ensuring the fixing of the ring 68 on the ring 67.
  • the junction between the body 24 and the ring 67 is provided by a ring 71 welded to the body 24, and applied in a sealed manner against the ring 67.
  • the seal 66 located on the side of the body 24 closes the bottom of an annular chamber 72 reserved between the end of the fixed connector 62 and the ring 67, this chamber 72 opening into the interior of the body 24 and of the ring 71.
  • Means are provided for injecting a compressed gas (preferably air) during shot-blasting into the annular chamber 72, in order to constantly push back the grains of shot injected in the direction of arrow G inside the lance, which tend to penetrate inside the chamber 72 and consequently damage the seal 66.
  • a compressed gas preferably air
  • these means consist of an annular channel 73 formed in the ring 67. And which communicates with a bore 74 also formed therein.
  • Channel 73 opens in the chamber 72, and a pipe 75 communicating with the bore 74 supplies the latter and the channel 73 with compressed air during the blasting.
  • the compressed air supply pipe 75 is integral with a rotating part, namely the ring 67 which in fact rotates integrally with the body 24, which constitutes a disadvantage.
  • the latter can be overcome by fitting, according to an advantageous variant, the compressed air injection channel transversely in the tube 63, then longitudinally in the fixed connector 62, until opening into the chamber 72. The piping compressed air supply is then secured to the tubing 63 fixed in rotation.
  • the turbine 76 known per se, comprises a set of blades 77 arranged radially around an axis 78 fixed to the end of a support arm 79, itself secured to an electric motor 81 of drive fixed so known per se at the wall 4 of the nacelle, on the side of the blasting cabin.
  • the blades 77 are integral with a rotary bearing 82, mounted coaxially on the axis 78 with interposition of rolling 83. is driven by belt 80.
  • the angular difference between the blades 77 and their speed of rotation are determined in correlation with the average speed of the grains of shot projected towards the glass 11, so that these seeds are struck and returned by the blades 77 before they could reach the glass 11.
  • the shot blasting installation targeted by the invention comprises (FIG. 2) a plate 84 for receiving the piece 2 to be shot blasted, rotatably mounted around a vertical axis on a carriage 85 which can be moved horizontally.
  • the plate 84 is provided at its periphery with fins 86, constituted by vertical plates welded under the plate 84, and arranged at equal angular intervals.
  • the plate 84 When the shot of shot is directed on a fin 86, the plate 84 is rotated about its axis and consequently the piece to be shot, the entire surface of which can thus be exposed to the jets of shot after a complete rotation of 360 ° .
  • the lance 1 is equipped with at least one projector (not shown), known per se, which permanently illuminates the working area.
  • the light from this projector is chosen to allow the operator to see through the cloud of dust caused by cleaning the room.
  • the operation of the shot blasting installation contemplated by the invention clearly results from the description given above.
  • the operator can control the position of the end of the projection nozzle 5 by report to the part to be blasted according to several parameters on which it can act successively or simultaneously, in order to reach all the parts of the part.
  • the operator can thus raise and lower the nacelle 3 by controlling the motor 23 for driving the latter by means known per se and not shown; it can slide the lance 1 axially through the wall 4 by pushing on the manual flywheel 9; it can also rotate the lance 1 around its axis thanks to the rotary joint 25, tilt the lance in a vertical plane by means of the electric actuator 36, rotate it inside a cone as indicated above, and finally tilt the flexible nozzle 5 up to the perpendicular with the axis of the rigid body 24.
  • the shot blasting installation according to the invention has the following advantages.
  • the nacelle allows the operator to control from the outside of the blasting booth all the blasting operations on parts of any shape. This removes the drudgery of operations carried out manually under helmet protective suits, avoids the operator to breathe air polluted by dust, and protects him from the noise caused by shot blasting.
  • the operator is protected from the rebounds of the shot on the part to be treated, and can work seated on the seat 12, without a suit, helmet or protective gloves.
  • the electric actuator 36 relieves the operator of the weight of the lance, which he can effortlessly control movement in a vertical plane. On the other hand, the operator must manually maneuver the control device 45 of the lance in rotation on itself, by maneuver of the crank 54.
  • the invention is not limited to the embodiments described above and can include numerous variant embodiments.
  • more than two cables such as 44 could be provided to tilt the flexible nozzle 5.
  • these cables can be replaced by a jack articulated on the flexible tube 38 and carried by the rigid body 24.
  • the installation can be equipped with cylinders or additional electric motors to assist the long-stroke or large-amplitude movements of the lance, that is to say axially and angularly from bottom to top.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP83400487A 1982-05-18 1983-03-10 Schleuderstrahlmaschine für Werkstücke irgendeiner Form, mittels einer lenkbaren Strahlpistole Withdrawn EP0094850A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8208646 1982-05-18
FR8208646A FR2527126A1 (fr) 1982-05-18 1982-05-18 Installation de grenaillage de pieces de formes quelconques au moyen d'une lance orientable

Publications (2)

Publication Number Publication Date
EP0094850A2 true EP0094850A2 (de) 1983-11-23
EP0094850A3 EP0094850A3 (de) 1985-05-29

Family

ID=9274142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400487A Withdrawn EP0094850A3 (de) 1982-05-18 1983-03-10 Schleuderstrahlmaschine für Werkstücke irgendeiner Form, mittels einer lenkbaren Strahlpistole

Country Status (2)

Country Link
EP (1) EP0094850A3 (de)
FR (1) FR2527126A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2590827A1 (fr) * 1985-11-29 1987-06-05 Aerospatiale Systeme automatique de grenaillage destine a engendrer des precontraintes superficielles et robot pour son automatisation
FR2602989A1 (fr) * 1986-08-20 1988-02-26 Goldmann Friedrich Gmbh & Co Dispositif de decapage au sable
EP0365707A1 (de) * 1988-10-28 1990-05-02 Helmut Fastje Reinigungsanlage für Fassaden und dergleichen Oberflächen
CN110405633A (zh) * 2019-08-21 2019-11-05 青岛安泰重工机械有限公司 一种抛丸清理机
CN115923201A (zh) * 2022-12-30 2023-04-07 常州奥福电子设备有限公司 一种三维曲面精准电晕处理设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE597447C (de) *
DE649263C (de) * 1935-08-27 1937-08-19 Max Steiner Einrichtung zum Beobachten des Arbeitsvorganges in Schlammstrahlgeblaesen mittels Leucht- und Schauglases
FR996365A (fr) * 1948-10-01 1951-12-18 Procédé et dispositif pour protéger les vitrages contre les avaries superficielles
US2763964A (en) * 1954-02-15 1956-09-25 Hydro Blast Corp Wall mounted blasting gun
FR1279667A (fr) * 1961-01-12 1961-12-22 Azeta Srl Installation de pulvérisation sur objets dans un local, en particulier sablage, vernissage et analogues
US3604157A (en) * 1969-04-10 1971-09-14 Wheelabrator Corp Blast machine with automatic blast wheel positioner
FR2184136A5 (de) * 1972-05-08 1973-12-21 Wilson Ets
US4154539A (en) * 1975-03-07 1979-05-15 Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschraenkter Haftung Shot peening machine with mixer
DE2911823C2 (de) * 1979-03-26 1982-08-26 Industrie- Und Handelszentrale Walcker & Co Kg, 2854 Loxstedt Schutzvorrichtung für ein Sichtfenster einer Sandstrahlkabine vor Strahlmittel

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2590827A1 (fr) * 1985-11-29 1987-06-05 Aerospatiale Systeme automatique de grenaillage destine a engendrer des precontraintes superficielles et robot pour son automatisation
EP0230165A1 (de) * 1985-11-29 1987-07-29 AEROSPATIALE Société Nationale Industrielle Automatisches Kugelstrahlsystem zum Erzeugen von Oberflächenvorspannungen
FR2602989A1 (fr) * 1986-08-20 1988-02-26 Goldmann Friedrich Gmbh & Co Dispositif de decapage au sable
EP0365707A1 (de) * 1988-10-28 1990-05-02 Helmut Fastje Reinigungsanlage für Fassaden und dergleichen Oberflächen
CN110405633A (zh) * 2019-08-21 2019-11-05 青岛安泰重工机械有限公司 一种抛丸清理机
CN110405633B (zh) * 2019-08-21 2024-05-14 青岛安泰重工机械有限公司 一种抛丸清理机
CN115923201A (zh) * 2022-12-30 2023-04-07 常州奥福电子设备有限公司 一种三维曲面精准电晕处理设备
CN115923201B (zh) * 2022-12-30 2023-12-15 常州奥福电子设备有限公司 一种三维曲面精准电晕处理设备

Also Published As

Publication number Publication date
FR2527126A1 (fr) 1983-11-25
EP0094850A3 (de) 1985-05-29

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