EP0038270A2 - Mittel zum Unterstützen und Verschieben eines Werkzeuges an der Innenseite eines Loches - Google Patents

Mittel zum Unterstützen und Verschieben eines Werkzeuges an der Innenseite eines Loches Download PDF

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Publication number
EP0038270A2
EP0038270A2 EP81400600A EP81400600A EP0038270A2 EP 0038270 A2 EP0038270 A2 EP 0038270A2 EP 81400600 A EP81400600 A EP 81400600A EP 81400600 A EP81400600 A EP 81400600A EP 0038270 A2 EP0038270 A2 EP 0038270A2
Authority
EP
European Patent Office
Prior art keywords
tool
axis
nozzle
support
tap
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.)
Granted
Application number
EP81400600A
Other languages
English (en)
French (fr)
Other versions
EP0038270B1 (de
EP0038270A3 (en
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/de
Publication of EP0038270A3 publication Critical patent/EP0038270A3/fr
Application granted granted Critical
Publication of EP0038270B1 publication Critical patent/EP0038270B1/de
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 taps 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 taps provided 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 stitching is limited by the fact that the accessibility is not very good, the internal diameter of this stitching being relatively low. 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 also have a conical bore which further complicates manual machining operations in order to achieve a good surface condition.
  • 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, this device allowing automation of the work carried out with the tool, precise positioning of the tool relative to the surface to be worked inside the tapping and an adaptation to different types of profile and to different dimensions of this bore.
  • FIG. 1 a part of the wall 1 of a pressurized water reactor vessel is seen in which a nozzle 2 has been formed which is practically flush with the interior surface 1a of the wall 1 of the vessel and which projects relative to the external wall lb of this tank.
  • 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 square 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 vertical tank 1.
  • 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 inserted 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 frame 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 frame and one of the branches of the star support 7.
  • the support 7 consists of three branches 7a, 7b, 7c arranged with the plane of symmetry of the plans containing the axis xx 'of the stitching called radial planes.
  • the branches 7a, 7b, 7c are arranged with a certain inclination with respect 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 also carries a suction cup 20 whose position is adjustable relative 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 la of the tank, this bracket carrying it -even a lug 24 allowing the support on the internal surface of the tank.
  • 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 surface internal 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 solihire with 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 has a cylindrical jacket 38 carrying on its outer surface sliding pads such as 39 facilitating the introduction of the centering bell in the nozzle, and an inflatable seal 40 disposed at the inside of 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 by relative to the stitching, 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 tool 50 to be displaced by a grinding wheel and its drive motor in the axial direction of the stitching.
  • the shaft 44 is integral with 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 integral a sleeve 51 in the central bore through 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 allow to maintain the shaft 8 in a constant angular position with respect to the shaft 44 in the axial direction, if a rotation is made around the axis 52.
  • 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 allowing the shaft 26 and the tool bar 8 to be secured.
  • 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 tool support bar 8.
  • the support plate 60 is pierced with holes 68 centered on the vertical axis of this plate 60.
  • 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.
  • FIG. 3 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 t shown in broken lines in FIG. 3. For this, it suffices to unscrew the screws 63b and move the plate 61 secured to the tool bar 8 downward, then rotate it slightly to bring the holes 67 in line with the holes 63a and 68. We can then secure the shaft 26 and the bar again tool holder 8 thanks to 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, it is therefore possible very quickly and very easily to pass from the position of the device, from the machining position in a cylindrical bore to the machining position in a tapered 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. Penetration movements are thus carried out of the grinding wheel in the coating metal of the tapping bore.
  • 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 makes it possible to keep the device in place independently of any other support.
  • step-by-step advance of the grinding wheel in the axial direction and to make a rotation of slightly more than 360 ° tool bar 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 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 a location: any of the bore of this nozzle.
  • the use of the device according to the invention is of course not limited to machining operations and checks can be carried out non-destructive inside a tapping by replacing the tool mounted on the tool bar by a control means which can be moved into positions allowing the control of the entire internal surface of the bore.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (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)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Turning (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Earth Drilling (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
EP81400600A 1980-04-15 1981-04-15 Mittel zum Unterstützen und Verschieben eines Werkzeuges an der Innenseite eines Loches Expired EP0038270B1 (de)

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 true EP0038270A2 (de) 1981-10-21
EP0038270A3 EP0038270A3 (en) 1981-11-04
EP0038270B1 EP0038270B1 (de) 1984-02-15

Family

ID=9240903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400600A Expired EP0038270B1 (de) 1980-04-15 1981-04-15 Mittel zum Unterstützen und Verschieben eines Werkzeuges an der Innenseite eines Loches

Country Status (10)

Country Link
US (1) US4419847A (de)
EP (1) EP0038270B1 (de)
JP (1) JPS56163493A (de)
AT (1) ATE6222T1 (de)
BR (1) BR8102177A (de)
DE (1) DE3162234D1 (de)
ES (1) ES8303791A1 (de)
FI (1) FI66556C (de)
FR (1) FR2480167A1 (de)
YU (1) YU93081A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673703A1 (de) * 1994-03-23 1995-09-27 Compagnie Generale Des Matieres Nucleaires Schweissgerät für eine Muffe in einer Abzweigleitung einer kreisförmigen schwer zugänglichen Rohrleitung
DE10014248A1 (de) * 2000-03-22 2001-10-18 Rehau Ag & Co Medizinische Arbeitsmittel

Families Citing this family (6)

* 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 (de) * 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 (de) * 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

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1506504A (en) * 1921-12-14 1924-08-26 Joseph B Ruatti Machine for finishing journal frames
US2235924A (en) * 1940-04-02 1941-03-25 Hopper Machine Works Inc Portable angular boring bar with grinder
US2348505A (en) * 1943-09-24 1944-05-09 Voerge John Nicholas Sandblasting
GB995555A (en) * 1961-04-18 1965-06-16 Derefa Ets Improvements in or relating to boring or turning apparatus
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
FR2285212A1 (fr) * 1974-09-17 1976-04-16 Okano Valve Seizo Kk Dispositif pour le rodage automatique de sieges de soupape
FR2356478A1 (fr) * 1976-07-01 1978-01-27 Rockwell International Corp Machine portative pour realeser, rectifier et roder sur place les sieges de vannes
US4161127A (en) * 1977-04-08 1979-07-17 Tiffin Patrick L Remotely operable portable boring tool

Family Cites Families (9)

* 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
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
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
US2521210A (en) * 1946-11-18 1950-09-05 Charles A Fulmer Cylinder grinding machine
US3218762A (en) * 1964-08-31 1965-11-23 Charles C Renfroe Power driven ridge reamer
US4208229A (en) * 1978-12-15 1980-06-17 Giardini Dante S System for repairing panes of glass

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1506504A (en) * 1921-12-14 1924-08-26 Joseph B Ruatti Machine for finishing journal frames
US2235924A (en) * 1940-04-02 1941-03-25 Hopper Machine Works Inc Portable angular boring bar with grinder
US2348505A (en) * 1943-09-24 1944-05-09 Voerge John Nicholas Sandblasting
GB995555A (en) * 1961-04-18 1965-06-16 Derefa Ets Improvements in or relating to boring or turning apparatus
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
FR2285212A1 (fr) * 1974-09-17 1976-04-16 Okano Valve Seizo Kk Dispositif pour le rodage automatique de sieges de soupape
FR2356478A1 (fr) * 1976-07-01 1978-01-27 Rockwell International Corp Machine portative pour realeser, rectifier et roder sur place les sieges de vannes
US4161127A (en) * 1977-04-08 1979-07-17 Tiffin Patrick L Remotely operable portable boring tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673703A1 (de) * 1994-03-23 1995-09-27 Compagnie Generale Des Matieres Nucleaires Schweissgerät für eine Muffe in einer Abzweigleitung einer kreisförmigen schwer zugänglichen Rohrleitung
FR2717721A1 (fr) * 1994-03-23 1995-09-29 Cogema Dispositif de soudage d'un manchon dans un piquage d'une canalisation circulaire d'accès difficile.
DE10014248A1 (de) * 2000-03-22 2001-10-18 Rehau Ag & Co Medizinische Arbeitsmittel

Also Published As

Publication number Publication date
US4419847A (en) 1983-12-13
FR2480167A1 (fr) 1981-10-16
FI811138L (fi) 1981-10-16
BR8102177A (pt) 1981-12-01
EP0038270B1 (de) 1984-02-15
ATE6222T1 (de) 1984-03-15
DE3162234D1 (en) 1984-03-22
JPS623398B2 (de) 1987-01-24
EP0038270A3 (en) 1981-11-04
ES501324A0 (es) 1983-02-01
YU93081A (en) 1984-02-29
JPS56163493A (en) 1981-12-16
FI66556B (fi) 1984-07-31
FR2480167B1 (de) 1983-12-02
ES8303791A1 (es) 1983-02-01
FI66556C (fi) 1984-11-12

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