EP0032102B1 - Dispositif d'ébavurage et de chanfreinage des trous d'une plaque perforée - Google Patents

Dispositif d'ébavurage et de chanfreinage des trous d'une plaque perforée Download PDF

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Publication number
EP0032102B1
EP0032102B1 EP80401894A EP80401894A EP0032102B1 EP 0032102 B1 EP0032102 B1 EP 0032102B1 EP 80401894 A EP80401894 A EP 80401894A EP 80401894 A EP80401894 A EP 80401894A EP 0032102 B1 EP0032102 B1 EP 0032102B1
Authority
EP
European Patent Office
Prior art keywords
plate
support
brush
holes
chamfering
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
EP80401894A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0032102A3 (en
EP0032102A2 (fr
Inventor
Michel Batistoni
Jean-Paul Cheyssac
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
Publication of EP0032102A2 publication Critical patent/EP0032102A2/fr
Publication of EP0032102A3 publication Critical patent/EP0032102A3/fr
Application granted granted Critical
Publication of EP0032102B1 publication Critical patent/EP0032102B1/fr
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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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/002—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for travelling workpieces

Definitions

  • the invention relates to a device for deburring and chamfering the holes of a perforated plate which comprises a set of holes of any shape machined during an operation leaving a rim of metal pushed back and sharp angles on the edges of the hole , on at least one of the faces of the plate.
  • the steam generators of pressurized water nuclear reactors consist of a large envelope of generally cylindrical shape inside which is disposed a bundle of small diameter tubes tightly fixed on a tubular plate at each of their ends, these tubes having a vertical path inside the envelope of the steam generator over a great length and being bent with a certain curvature at their upper part.
  • the vertical parts of the bundle tubes must be kept in position in relation to each other, the cross-sections of the tubes constituting regular networks in planes perpendicular to the axis of the exchanger.
  • spacer plates are used, arranged with a certain spacing along the height of the heat exchanger, these spacer plates having holes in a network corresponding to the network of tubes.
  • holes of more or less complex shapes passing through the spacer plates right through are made by conventional machining methods such as drilling, reaming or broaching.
  • the holes thus machined have a rim of repelled metal and sharp angles on their edge so that it is necessary on the one hand to deburr and on the other hand to chamfer the edges of these holes.
  • special cutters are used which eliminate burrs and simultaneously make a chamfer or a rounded connection.
  • this method can no longer be used and one must operate by grinding with a tool of special shape. So far we have not succeeded in automating this operation which is currently carried out hole by hole by operators who use portable machines of the hand drill type.
  • FR-A-2,374,137 a device for deburring and chamfering parts comprising several sets of cylindrical polishers rotating around their axis, fixed on a support above a conveyor also providing the support and the displacement of the pieces one after the other, under the polishing device.
  • Such a device cannot be applied in the case of a very large plate and does not allow precise adjustment of the amplitude of the chamfer on each of the holes in the plate.
  • the object of the invention is to improve a device for deburring and chamfering the holes of a perforated plate which comprises a set of holes of any shape machined during an operation leaving a ledge of repelled metal and angles sharp on the edge of the holes, on at least one of the faces of the plate, comprising a first support on which the plate rests during the deburring and chamfering operation by means of at least one abrasive brush rotating around of its axis of symmetry disposed parallel to the plate, the abrasive brush comprising fibers for brushing arranged perpendicular to the axis of symmetry and, being mounted on a second support, this device making it possible to carry out deburring and chamfering operations of non-circular holes in a very large plate, fully automatically and by controlling the amplitude of the chamfering (FR-A-2374137).
  • the first support is fixed
  • the second support is movable by means of displacement in a first direction parallel to the plate in position on the fixed support
  • the brush being further movable in a direction perpendicular to the plate is mounted on a mobile carriage on the second support by means of guiding and moving in a second direction parallel to the plate
  • this device also comprises means for moving the abrasive brush, with a small amplitude in one direction perpendicular to the plate, towards the inside of the holes with return to an original position, by displacement in the other direction, between two successive displacements of this abrasive brush parallel to the plate.
  • the support 1 is fixed thanks to a support structure 4 on the fixed frame of the installation on which is also fixed a control gateway 5 and a gateway 6 usable for repairs and maintenance of the device.
  • a control console 7 of the device On the bridge 5 is arranged a control console 7 of the device.
  • the support device 4 in a slightly inclined position relative to the vertical also supports two devices 9 and 10 with rollers for the support and the rotation of the spacer plate 2.
  • Each of the roller support devices 9 and 10 comprises, as can be seen in FIG. 2, a geared motor 11 driving a roller 12 whose groove makes it possible to receive the edge of the spacer plate 2.
  • rollers such as 14 whose axis is slightly inclined relative to the vertical, at the same inclination as the support 1 .
  • the support and rotation devices 9 and 10 when the motors such as 11 are powered, can put the plate in rotation about its axis of symmetry.
  • the fixed frame of the installation also carries beams 16 and 17 allowing the support and the guiding of a mobile support 18 maintained in an inclined position and parallel to the plate 2.
  • Motor means allow the support 18 to move in the longitudinal direction of the installation between an extreme position shown in solid lines in FIG. 1 (18a position out of service) and an extreme position represented in mixed trains in FIG. 1 (1 8b, position in service).
  • a motor 20 driving a chain pulley over which passes a chain 21 which allows the movement in the vertical direction of the carriage 22 constituted by a frame guided by the lateral uprights of the mobile support 18.
  • the movable support 18 moves parallel to the perforated plate in position on the support 1 and on the other hand the charoit also moves parallel to the perforated plate 2 in a direction perpendicular to the direction of movement of the carriage 18.
  • the carriage 22 carries a motor 23 whose axis of rotation directed in the direction 25 is integral with a brush 24 with symmetry of revolution around the driven axis 25 in rotation by the motor 23.
  • the brush 24 comprises a set of brushing fibers 26 disposed on the body of the brush secured to the axis 25, perpendicular to this axis 25.
  • the motor 23 is mounted movably on the carriage 22 in a direction perpendicular on the one hand to the axis 25 and on the other hand to the plate 2.
  • a device for moving the brush and its motor d driving in this direction enables the holes in the perforated plate to be displaced inwards, then, when the intensity of the supply current to the motor 23 reaches a certain threshold, a blockage during the entire operation of the deburring and finally a displacement in the other direction with return to the position of origin.
  • the brush can be seen in the position of maximum penetration into a hole 34 in the perforated plate, the brush 24 having eliminated the burr present around the hole and caused the formation of a rounded part 30 on the edges of the hole 34 .
  • the metal particles detached from the plate 2 during deburring are recovered by a vacuum cleaner 31 fixed to the carriage 22 and following all the movements of the brushing unit.
  • a flexible electric power supply device 32 allows tools to be fed regardless of their position relative to the fixed support.
  • the movable support 18 When it is desired to perform a deburring and chamfering operation on a spacer plate, the movable support 18 is put in the out-of-service position 18a, for the positioning of the perforated plate on the fixed support thanks to a handling means. such as an overhead crane.
  • the hooking means of the traveling crane can be unhooked. After retraction of the rollers 14, the plate 2 rests on the support 1 slightly inclined relative to the vertical.
  • the carriage 22 is then brought into position in front of the zone of the plate 2 on which it is desired to begin the deburring operation and by displacement of the carriage 22 in the longitudinal direction of the movable support 18, the entire surface is scanned. of an area of the plate 2.
  • roller devices 9 and 10 are used to cause the plate to rotate around its axis.
  • an entire area is brushed corresponding to the upper half of the plate and then this plate is caused to rotate by 90 °, to carry out a new brushing operation on the area corresponding to the upper half-plate.
  • each zone of the plate underwent twice the brushing operation.
  • Brushes of cylindrical shape comprising steel bristles with a diameter of 0.2 to 0.3 mm and with this tool it was possible to remove burrs having a section of the order of 0.05 mm2. It was also possible to achieve with this tool chamfering or shelving greater than 1 mm.
  • the invention is not limited to the embodiment which has just been described; so instead of a brush with steel bristles, you can use a brush or a set of brushes with nylon bristles or other synthetic material containing abrasives or brushes of sisal or other natural fibers braided and sewn, with the addition of a liquid or pasty abrasive.
  • this penetration can be controlled by the contact pressure of the brushing assembly or to a proximity measurement making it possible to know the distance between the brushing assembly and the plate.
  • the main axis of this perforated plate can be, during operation, both in vertical position in horizontal position or in inclined position.
  • the plate is placed in a fixed position on the support or that this plate can be moved in rotation or translation on the mobile support to present different areas to the brushing tool.
  • the device according to the invention applies not only to deburring and chamfering of spacer plates of steam generators such as the steam generators of nuclear pressurized water reactors but also in the case of any large plate dimension with a network of more or less regular holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP80401894A 1980-01-04 1980-12-31 Dispositif d'ébavurage et de chanfreinage des trous d'une plaque perforée Expired EP0032102B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8000138A FR2472961A1 (fr) 1980-01-04 1980-01-04 Dispositif d'ebavurage et de chanfreinage des trous d'une plaque perforee
FR8000138 1980-01-04

Publications (3)

Publication Number Publication Date
EP0032102A2 EP0032102A2 (fr) 1981-07-15
EP0032102A3 EP0032102A3 (en) 1981-07-22
EP0032102B1 true EP0032102B1 (fr) 1983-12-14

Family

ID=9237222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401894A Expired EP0032102B1 (fr) 1980-01-04 1980-12-31 Dispositif d'ébavurage et de chanfreinage des trous d'une plaque perforée

Country Status (4)

Country Link
EP (1) EP0032102B1 (enrdf_load_stackoverflow)
DE (1) DE3065927D1 (enrdf_load_stackoverflow)
ES (1) ES498190A0 (enrdf_load_stackoverflow)
FR (1) FR2472961A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664191B1 (fr) * 1990-07-04 1995-03-31 Commissariat Energie Atomique Appareil d'usinage de contours en materiau tendre et procede d'usinage automatique utilisant un tel appareil.
FR2717726B1 (fr) * 1994-03-22 1996-07-19 Framatome Sa Procédé et dispositif d'ébavurage et de chanfreinage de bords de trous traversant une plaque de maintien d'un faisceau de tubes.
CN116352539A (zh) * 2023-03-01 2023-06-30 武汉科技大学 一种用于钢丝对接焊点自动打磨装置及打磨方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1510086A (en) * 1976-06-09 1978-05-10 Dillinger L Drilling or reaming machines
DE2658263A1 (de) * 1976-12-22 1978-07-06 Kraftwerk Union Ag Anordnung zum nacharbeiten von kuehlrohrbohrungen an waermetauschern
FR2374137A1 (fr) * 1976-12-03 1978-07-13 Mitsubishi Heavy Ind Ltd Procede pour arrondir les aretes de pieces et dispositif pour sa mise en application

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722144A (en) * 1971-04-06 1973-03-27 Cam Ind Inc Method and machine to de-bur commutator bars

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1510086A (en) * 1976-06-09 1978-05-10 Dillinger L Drilling or reaming machines
FR2374137A1 (fr) * 1976-12-03 1978-07-13 Mitsubishi Heavy Ind Ltd Procede pour arrondir les aretes de pieces et dispositif pour sa mise en application
DE2658263A1 (de) * 1976-12-22 1978-07-06 Kraftwerk Union Ag Anordnung zum nacharbeiten von kuehlrohrbohrungen an waermetauschern

Also Published As

Publication number Publication date
ES8201056A1 (es) 1981-12-01
ES498190A0 (es) 1981-12-01
EP0032102A3 (en) 1981-07-22
FR2472961B1 (enrdf_load_stackoverflow) 1983-05-06
EP0032102A2 (fr) 1981-07-15
DE3065927D1 (en) 1984-01-19
FR2472961A1 (fr) 1981-07-10

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