EP0038270B1 - Dispositif de support et de déplacement d'un outil à l'intérieur d'un piquage - Google Patents

Dispositif de support et de déplacement d'un outil à l'intérieur d'un piquage Download PDF

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Publication number
EP0038270B1
EP0038270B1 EP81400600A EP81400600A EP0038270B1 EP 0038270 B1 EP0038270 B1 EP 0038270B1 EP 81400600 A EP81400600 A EP 81400600A EP 81400600 A EP81400600 A EP 81400600A EP 0038270 B1 EP0038270 B1 EP 0038270B1
Authority
EP
European Patent Office
Prior art keywords
tool
penetration
axis
carrying bar
centering
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
EP81400600A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0038270A3 (en
EP0038270A2 (fr
Inventor
Jean-Benoit Duverne
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.)
Areva NP SAS
Original Assignee
Framatome 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 Framatome SA filed Critical Framatome SA
Priority to AT81400600T priority Critical patent/ATE6222T1/de
Publication of EP0038270A2 publication Critical patent/EP0038270A2/fr
Publication of EP0038270A3 publication Critical patent/EP0038270A3/fr
Application granted granted Critical
Publication of EP0038270B1 publication Critical patent/EP0038270B1/fr
Expired 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/08—Portable grinding machines designed for fastening on workpieces or other parts of particular section, e.g. for grinding commutators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/306216—Randomly manipulated, work supported, or work following device
    • Y10T409/306384—Randomly manipulated, work supported, or work following device with work supported guide means
    • Y10T409/30644—Randomly manipulated, work supported, or work following device with work supported guide means to guide tool to move in arcuate path
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/306664—Milling including means to infeed rotary cutter toward work
    • Y10T409/30756—Machining arcuate surface

Definitions

  • the invention relates to a device for supporting and moving a tool inside a nozzle passing through a wall so as to be flush with one side of the wall and protruding from the other side.
  • outlets or arrivals of pipes in the vessel, or tappings are formed in the wall of the vessel so as to allow connection, outside of this tank, between the tapping and an arrival or departure pipe.
  • Such tappings are formed in the wall so that the tapping is flush with the internal surface of the tank and is fairly widely projecting outside the tank for its connection with a pipe of the primary circuit of the reactor bringing the water under pressure. in the tank or, on the contrary, allowing the exit of this water which acts as a coolant in the reactor core, outside the tank for its sending to the steam generators.
  • the internal surface of the tank, as well as the internal surface of the nozzles, must be coated with a layer of stainless steel and it is necessary to carry out a quality control of this coating, in particular inside the nozzles made in the wall of the tank.
  • the machining or controls inside the taps of the primary circuit are generally carried out when the tank is in the vertical position, that is to say with taps whose axes are practically horizontal.
  • the proper execution of the work inside the nozzle is limited by the fact that accessibility is not very good, the internal diameter of this nozzle being relatively small. In some cases, the space available is not even sufficient to allow the use of certain tools.
  • the taps of the pressurized water inlet pipes to the reactor vessel have, on the other hand, a tapered bore which further complicates manual machining operations in order to achieve a good surface condition.
  • U.S. Patent No. 4161127-A describes a device for machining the inner surface of a nuclear reactor vessel in the vicinity of a nozzle and around the latter, for the repair of cracks.
  • This device comprises a centering piece disposed inside the tapping, a tool support carried by the projecting end of the tapping and a tool bar mounted rotatably in the centering piece and in the support, directed along the axis of the stitching and associated with rotation drive means carried by the support.
  • the bar At its end opposite to the support, inside the tank, the bar carries a cutting tool which can move axially with the bar, for a small distance and radially with respect to the bar, during the rotation of the latter .
  • Such a device can only be used for machining inside the tap since the centering piece occupies a large part of the internal volume and surface of this tap and the tool bar can only move axially over a very short distance corresponding to the penetration depth of the tool.
  • the tapping ensures the fixing and centering along its axis of the tool bar, the support and actuation means of which are arranged outside the tank, the tool working inside the tank only.
  • this device does not make it possible to adjust the tool as a function of the shape and size of the stitching.
  • the object of the invention is therefore to propose a device for supporting and moving a tool inside a nozzle having a symmetry of revolution and passing through a wall so as to be flush with one side of the wall and to be protruding on the other side, comprising a centering piece inside the tap, a support means fixed centrally at one end of the tap and a tool bar rotatably mounted around the axis of the tap in bearings carried by the centering piece and the support means and associated with rotation means, the device allowing automation of the work carried out with the tool, precise positioning of the tool at any point on the internal surface of the tapping and an adaptation to different types of profiles and to different dimensions of the internal bore of the tapping.
  • the internal bore 3 of the tap 2 is of cylindrical shape.
  • the device for supporting and moving a grinding tool in the tapping bore shown in FIG. 1 comprises a handling chassis 6, a star support 7, a tool bar 8 and a centering bell 9.
  • the handling chassis is constituted by a bracket formed by two beams 10 and 11 of rectangular section, the beam 10 being arranged vertically and the beam 11 horizontally when the device is in position inside the tank 1 vertical.
  • the horizontal beam 11 carries a handling lug 12 allowing the transport of the device as a whole with an overhead crane.
  • This beam 11 is supported on the upper part of the tank 1 by means of two supports 13 constituted by screws allowing the verticality of the handling chassis to be adjusted in position on the tank.
  • a means of fixing the handling chassis to the tank consisting of an arm 14 held in position at the end of the beam 11 by pins 15 introduced into openings of the fixing arm 14.
  • a screw 16 allows the handling chassis to be locked in position on the upper part of the tank.
  • the handling chassis 6 also carries an electrical cabinet 17 allowing the supply of the motor components of the device.
  • the handling chassis 6 is connected to the star support device 7 by bolting at a junction plate 18 ensuring the connection between the lower end of the handling chassis and one of the branches of the star support 7.
  • the support 7 consists of three branches 7a, 7b, 7c arranged with, for the plane of symmetry, planes containing the axis xx 'of the branching called radial planes.
  • the branches 7a, 7b, 7c are arranged with a certain inclination relative to the vertical in a radiating manner with respect to the nozzle when the device is in position as shown in FIG. 1.
  • the branch 7a is formed at its end by a beam portion 19 allowing the connection of the branch 7a with the frame 6.
  • This end portion 19 of the branch 7a carries, on the other hand, a suction cup 20 whose position is adjustable with respect to the branch 7a by means of a screw 21.
  • the beam 19 also carries a centering bracket 23 intended to come to engage in the orifice of the bore 3 flush with the internal surface 1a of the tank, this bracket itself carrying a lug 24 allowing the support on the internal surface 1a of the tank.
  • the branches 7b and 7c respectively comprise adjustable suction cups 20b and 20c and support brackets 23b and 23c arranged at the end of the oblique branches 7b and 7c to allow the centering and the attachment of the device on the internal surface of the tank at the nozzle.
  • the pins 24b and 24c associated with the arms 7b and 7c respectively are adjustable by means of jacks 22.
  • a bearing 25 in which a shaft 26 is pivoted in an axial direction relative to the nozzle.
  • the shaft 26 is connected to the tool bar 8 by means of a device 30 allowing an inclination adjustment.
  • the device 30 will be described in more detail with reference to FIGS. 3 and 4.
  • a flywheel 31 making it possible to manually rotate the shaft 26 from a work floor inside the tank.
  • the end of the shaft 26 is also secured to a toothed wheel 34, meshing with a pinion 35, driven by a motor 36 carried by the branch 7a of the star.
  • the centering bell 9 introduced into the protruding end of the nozzle comprises a cylindrical jacket 38 carrying, on its external surface, sliding pads such as 39 facilitating the introduction of the centering bell in the nozzle, and an inflatable seal 40 disposed inside a groove machined in a projecting part of the external surface of the bell 38.
  • a bearing 41 constituted by a tube made integral with the bottom of the bell 38 by ribs 42.
  • a shaft 44 connected in an articulated manner to the end of the tool bar 8 as will be explained with reference to FIG. 2.
  • the shafts 26 and 41 are aligned and arranged axially with respect to the nozzle, that is to say, in the case of FIG. 1, in a horizontal direction.
  • the tool bar 8 is provided over its entire length with a dovetail profile slide 46 and a screw 47 mounted in bearings such as 48 allowing the movement of the tool 50 constituted by a grinding wheel and its drive motor in the axial direction of the stitching.
  • the shaft 44 is secured to a bracket 50, the horizontal part of which enables the tool-holder bar 8 to be fixed in a precise position with regard to its orientation relative to the shaft 44.
  • the bar 8 is secured a sleeve 51 in the central bore of which passes an axis 52 fixed, relative to the bracket, by means of screws 53 and, relative to the sleeve 51, by a nut 54 engaged on the threaded upper end of the shaft 52. Openings in the sleeve 51 and keys 55 make it possible to maintain the shaft 8 in a constant angular position relative to the shaft 44 of axial direction, if we consider a rotation around the axis 52.
  • the longitudinal axis yy 'of the tool bar 8 is offset in the radial direction relative to the axis xx' of the tapping.
  • the shaft 44 is pierced at its center with a channel 57 allowing the supply of control fluid to the inflatable seal 40.
  • the plate 62 has two holes 63a inside which pass screws 63b making it possible to secure the shaft 26 and the tool bar 8.
  • the tool bar 8 is secured to a fixing plate 61, however a support plate 60 is interposed between the plate 62 secured to the shaft 26 and the plate 61 secured to the support bar d tool 8.
  • the support plate 60 is pierced with holes 68 centered on the vertical axis of this plate 60.
  • the concordance between the holes 63a and 68 makes it possible to secure the plates 60 and 62 by means of the screws 63b.
  • the plate 61 secured to the tool bar 8 comprises two sets of two threaded holes 67 whose spacing corresponds to the spacing of the holes 63a of the plate 62.
  • a first set of holes 67 of the plate 61 has been placed in accordance with the holes 63a and 68, so that the screws 63b allow the shaft 26 and the tool bar to be secured so that the axis of this tool bar 8 is parallel to the axis of the shaft 26, that is to say to the axis of the nozzle.
  • the second set of holes 67 when brought into concordance with the holes 63a and 68, allows the plate 61 to be placed in the position 61 'shown in broken lines in FIG. 3. For this, it suffices to unscrew the screws 63b and to move the plate 61 integral with the tool-holder bar 8 downwards, then to rotate it slightly to bring the holes 67 in line with the holes 63a and 68. The shaft 26 and the tool bar 8 can then be secured again using the screws 63b which are fixed in the second set of holes 67 of the plate 61.
  • the axis of the tool bar 8 is then inclined relative to the axis of the shaft 26, that is to say relative to the axis of the tap 2.
  • the device is then in the position shown in FIG. 6.
  • the arrangement of the two sets of holes 67 on the plate 61 is chosen so as to bring the axis of the tool-holder bar in the direction of a generator of the cone constituting the bore of the tap 2 'shown in FIG. 6.
  • the tappings are of two types, some with cylindrical internal bore, and the others with conical internal bore.
  • a plate comprising two sets of holes 67 as shown; the device can therefore be obtained very quickly and very easily from the machining position in a cylindrical bore to the machining position in a conical bore.
  • the grinding wheel of the tool 50 can then describe a conical surface corresponding to the interior surface of the bore.
  • the assembly of the tool 50 is seen, consisting of a grinding wheel 70 mounted on an axis 71 driven by a motor 72 by means of a belt 73.
  • All of the tools are fixed to a frame 74 mounted sliding on the dovetail slide 46 secured to the tool bar 8.
  • the frame 74 carries a nut 75 in engagement with the screw endless 47 driven in rotation by a motor carried by the tool bar 8.
  • the axis 71 of the grinding wheel 70 is, on the other hand, rotatably mounted in a barrel 77 which can be moved along its axis by a jack 78, relative to the frame 74 of the tool. The penetration movements of the grinding wheel in the coating metal of the tapping bore are thus carried out.
  • a set of pulleys 79 makes it possible to send the electrical wires or fluid supply tubes to the various motors or jacks carried by the tool bar and the tools.
  • the device is then introduced into the nozzle by carrying out its handling using the lifting lug 12 until the bell is in its final position at the end of the protruding part of the nozzle.
  • the pins 24 are placed in position against the internal wall of the tank and the seal 40 of the bell 28 is inflated by sending the seal control fluid through the central channel 57 of the shaft 44.
  • suction cups 20 are then adjusted by action on the screws 21 so that these suction cups come into contact with the internal wall of the tank.
  • These suction cups 20 obviously have a contact surface constituting a cylinder portion to allow them to perfectly match the internal surface of the tank.
  • suction cups are then placed under vacuum, which keeps the device in place independently of any other support.
  • step-by-step advance of the grinding wheel in the axial direction and rotate the tool bar a little more than 360 ° to carry out a complete sweep of the surface with a slight overlap.
  • step-by-step advances is obviously chosen so that its amplitude is less than the working width of the grinding wheel.
  • the centering brackets 23 are dismantled, which makes it possible to carry out a scanning of the internal surface of the nozzle by the grinding wheel up to the end of this nozzle flush with the internal surface of the tank.
  • the main advantages of the device according to the invention are to allow automation of the machining operations in a tapping and the use of more bulky tools, to have a large power at the end of the shaft and to allow adaptation to various geometries of the stitching.
  • the use of the device according to the invention is particularly simple and particularly safe.
  • a tool can be placed on the tool bar allowing any operation to be carried out inside the nozzle at any point in the bore of this nozzle.
  • the use of the device according to the invention is of course not limited to machining operations and it is possible to carry out non-destructive checks inside a nozzle by replacing the tool mounted on the door bar. -tool by a control means which can be moved into positions allowing the control of the entire internal surface of the bore.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Turning (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Earth Drilling (AREA)
EP81400600A 1980-04-15 1981-04-15 Dispositif de support et de déplacement d'un outil à l'intérieur d'un piquage Expired EP0038270B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81400600T ATE6222T1 (de) 1980-04-15 1981-04-15 Mittel zum unterstuetzen und verschieben eines werkzeuges an der innenseite eines loches.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8008430 1980-04-15
FR8008430A FR2480167A1 (fr) 1980-04-15 1980-04-15 Dispositif de support et de deplacement d'un outil a l'interieur d'un piquage

Publications (3)

Publication Number Publication Date
EP0038270A2 EP0038270A2 (fr) 1981-10-21
EP0038270A3 EP0038270A3 (en) 1981-11-04
EP0038270B1 true EP0038270B1 (fr) 1984-02-15

Family

ID=9240903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400600A Expired EP0038270B1 (fr) 1980-04-15 1981-04-15 Dispositif de support et de déplacement d'un outil à l'intérieur d'un piquage

Country Status (10)

Country Link
US (1) US4419847A (enrdf_load_stackoverflow)
EP (1) EP0038270B1 (enrdf_load_stackoverflow)
JP (1) JPS56163493A (enrdf_load_stackoverflow)
AT (1) ATE6222T1 (enrdf_load_stackoverflow)
BR (1) BR8102177A (enrdf_load_stackoverflow)
DE (1) DE3162234D1 (enrdf_load_stackoverflow)
ES (1) ES501324A0 (enrdf_load_stackoverflow)
FI (1) FI66556C (enrdf_load_stackoverflow)
FR (1) FR2480167A1 (enrdf_load_stackoverflow)
YU (1) YU93081A (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3310947A1 (de) * 1983-03-23 1986-03-06 Kraftwerk Union AG, 4330 Mülheim Reparatureinrichtung fuer einen reaktordruckbehaelter
FR2611561A1 (fr) * 1987-02-26 1988-09-09 Creation Mecanismes Aut Asserv Dispositif de brossage d'alesages taraudes
JPS6433499U (enrdf_load_stackoverflow) * 1987-08-25 1989-03-01
FR2629250A1 (fr) * 1988-03-25 1989-09-29 Electricite De France Machine de nettoyage de trous taraudes, notamment les trous taraudes pour les obturateurs de trous de poing et de trous d'oeil des generateurs de vapeur des centrales nucleaires
JPH026699U (enrdf_load_stackoverflow) * 1988-06-28 1990-01-17
JPH02164690A (ja) * 1988-12-20 1990-06-25 Mitsubishi Heavy Ind Ltd リアクションフィン支持構造
FR2717721B1 (fr) * 1994-03-23 1996-06-07 Cogema Dispositif de soudage d'un manchon dans un piquage d'une canalisation circulaire d'accès difficile.
EP0769116B1 (en) * 1994-06-15 2002-03-27 Fmc Corporation Step bearing race swivel joint assembly
RU2146589C1 (ru) * 1997-09-10 2000-03-20 Кононов Николай Иванович Устройство для восстановления внутренних цилиндрических поверхностей
DE10014248A1 (de) * 2000-03-22 2001-10-18 Rehau Ag & Co Medizinische Arbeitsmittel

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1114376A (en) * 1914-07-13 1914-10-20 Martin Milkop Cylinder-grinding machine.
US1365149A (en) * 1919-06-13 1921-01-11 Dale L Breed Boiler-cleaning apparatus
US1506504A (en) * 1921-12-14 1924-08-26 Joseph B Ruatti Machine for finishing journal frames
US1814078A (en) * 1930-02-03 1931-07-14 Charles B Cole Machine for boring cylinders
US2188720A (en) * 1938-11-25 1940-01-30 Robert J Mcquade Abrading machine
US2235924A (en) * 1940-04-02 1941-03-25 Hopper Machine Works Inc Portable angular boring bar with grinder
US2297074A (en) * 1941-03-17 1942-09-29 Allen C Rohrdanz Manhole grinding machine
US2372341A (en) * 1942-09-01 1945-03-27 Walter A Shanley Grinding machine
US2348505A (en) * 1943-09-24 1944-05-09 Voerge John Nicholas Sandblasting
US2521210A (en) * 1946-11-18 1950-09-05 Charles A Fulmer Cylinder grinding machine
FR1295948A (fr) * 1961-04-18 1962-06-15 Derefa Etablissement Pour Le D Machine à combinaisons multiples, pour usinage de pièces de très grandes dimensions, ayant une forme générale de révolution
US3218762A (en) * 1964-08-31 1965-11-23 Charles C Renfroe Power driven ridge reamer
US3571985A (en) * 1965-10-20 1971-03-23 Capvac Ind Inc Cylinder treating method
US3587194A (en) * 1968-08-02 1971-06-28 Champion Corp Tap cutter
JPS5338838B2 (enrdf_load_stackoverflow) * 1974-09-17 1978-10-18
US4050836A (en) * 1976-07-01 1977-09-27 Rockwell International Corporation Portable field machine for cutting, grinding and lapping valve seats
US4161127A (en) * 1977-04-08 1979-07-17 Tiffin Patrick L Remotely operable portable boring tool
US4208229A (en) * 1978-12-15 1980-06-17 Giardini Dante S System for repairing panes of glass

Also Published As

Publication number Publication date
ATE6222T1 (de) 1984-03-15
US4419847A (en) 1983-12-13
DE3162234D1 (en) 1984-03-22
ES8303791A1 (es) 1983-02-01
ES501324A0 (es) 1983-02-01
YU93081A (en) 1984-02-29
JPS623398B2 (enrdf_load_stackoverflow) 1987-01-24
EP0038270A3 (en) 1981-11-04
FI811138L (fi) 1981-10-16
EP0038270A2 (fr) 1981-10-21
BR8102177A (pt) 1981-12-01
JPS56163493A (en) 1981-12-16
FI66556C (fi) 1984-11-12
FR2480167B1 (enrdf_load_stackoverflow) 1983-12-02
FI66556B (fi) 1984-07-31
FR2480167A1 (fr) 1981-10-16

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