EP0221122A1 - Polyvalent machining machine adapted to carry out on site machining operations on annular bodies and method using said machine - Google Patents
Polyvalent machining machine adapted to carry out on site machining operations on annular bodies and method using said machineInfo
- Publication number
- EP0221122A1 EP0221122A1 EP19860902841 EP86902841A EP0221122A1 EP 0221122 A1 EP0221122 A1 EP 0221122A1 EP 19860902841 EP19860902841 EP 19860902841 EP 86902841 A EP86902841 A EP 86902841A EP 0221122 A1 EP0221122 A1 EP 0221122A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- machining
- annular supports
- turbine
- machine according
- annular
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/02—Boring bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q9/00—Arrangements for supporting or guiding portable metal-working machines or apparatus
- B23Q9/0064—Portable machines cooperating with guide means not supported by the workpiece during working
Definitions
- Multipurpose machining machine adapted to carry out on-site operations for machining annular bodies and method using this machine.
- the present invention relates to a multipurpose machining machine suitable for performing on-site machining operations, or other operations, on annular bodies, in particular on annular bodies of turbines.
- the multipurpose machining machine is such that it comprises an elongated beam whose ends are provided with coaxial journals and which carries mobile machining units, intermediate annular supports of which said journals are mounted in rotation, main annular supports mounted on fixed frames located on either side of the annular body to be machined and surrounding said intermediate annular supports at a distance, intermediate means for holding and adjusting connecting the annular intermediate supports and the main and suitable annular supports so as to allow positioning of the axis of said beam along the axis of the annular body to be machined, and means for driving in rotation of said beam.
- said holding and adjusting means preferably comprise systems of lower corners extending between the main annular supports and the intermediate annular supports, in the lower space separating them, and pairs of lateral corners s' extending between the main annular supports and the intermediate annular supports, in the lateral spaces separating them, said corners being movable substantially longitudinally to the axis of said beam so as to be able to move the latter vertically and laterally for its positioning.
- said holding and adjusting means preferably comprise pressure screws mounted on said main annular supports and acting on said intermediate annular supports substantially radially.
- said holding and adjusting means preferably comprise jacks arranged between said intermediate annular supports and said main annular supports, in the lower space separating them, and acting from the bottom up, so as in particular relieve stress positioning of said beam during its upward movement.
- At least one of said intermediate annular supports preferably comprises an inner ring and an outer ring having spherical surfaces in contact, so as to constitute a ball joint.
- At least one of said journals is mounted on its intermediate annular support by means of a spherical bearing.
- said means for driving in rotation of said beam preferably comprises an electric motor and a transmission, which are carried by the end of one of the pins, at least one torque recovery arm being provided between their housing and a fixed part.
- at least one of said journals carries, at its end, a box forming an electrical manifold, a torque recovery arm being provided between its casing and a fixed part.
- said beam is preferably of hexagonal section, at least one of its faces having longitudinal slides for at least one machining unit.
- the present invention also consists of a method of machining or resuming machining of the turbine body.
- this method consists in dismantling the upper half-part of the two bearing housings of the turbine rotor, in extracting the turbine rotor and its bearings, in mounting, in place of the rotor and its bearings , the above machining machine, its main annular supports being adapted to be mounted and fixed in the lower half-part of the casings of the turbine bearings, to reassemble the upper half-part of the turbine body, and to perform , using said machining machine, machining operations, or other desired operations, on the turbine body.
- the present invention will be better understood from the study of a machine for machining on-site annular bodies of turbines described by way of nonlimiting example and illustrated by the drawing in which:
- FIG. 1 shows a top view of the machining machine, the turbine body being in section;
- FIG. 2 shows a radial section, in its middle part, of the machining machine shown in Figure 1;
- FIG. 3 shows a vertical radial section of the left bearing of the machining machine shown in Figure 1;
- - Figure 4 shows an external view of the bearing shown in Figure 3, seen along the axis of the machining machine, on its inner side;
- FIG. 5 shows a radial section of the right bearing of the machining machine shown in Figure 1.
- the machining machine shown in the figures and generally identified by the reference 1 is intended to perform welding operations and turning operations in the peripheral inner wall of an annular turbine body generally identified by the reference 2 and is mounted, for this, in place of the turbine rotor and the bearings thereof as will be seen below, this turbine comprising at the two ends of the turbine body 2 lower half-parts of the bearing housings of the rotor.
- the machining machine 1 comprises an elongated beam 5 which extends through the annular body 2 to be machined and which has, over its entire length located opposite of the body 2 to machine a part 5a of hexagonal section, this beam 5 being hollow.
- the beam 5 has, at its ends, coaxial trunnions 6 and 7 which are connected to its central hexagonal part 5a by means of frustoconical end parts 5b and 5c, these trunnions 6 and 7 being mounted rotating on the lower half-parts 3 and 4 of the turbine rotor bearing housings, by means of bearings generally identified by the references 8 and 9.
- the bearing 8 firstly comprises a main annular support 10 which fits in the bearing half-casing 3, which is angularly adjusted by means of a key 11 which penetrates into the lower groove of the bearing casing 3 and which is held thanks to two flanges 12 and 13 which are fixed on the upper face of the bearing housing half 3, on each side and which act on the main annular support 10 from top to bottom.
- the main annular support 10 is held in the axial direction by means of axial flanges 14 fixed on the axial faces of the bearing half-casing 3.
- the mounting bearing for the journal 6 further comprises an intermediate annular support 15 which s 'extends inside the main annular support 10 and at a distance to provide a space between them.
- This intermediate support 15 comprises an outer ring 16 in two radially separated parts fixed to one another as well as an inner ring 17, these rings 16 and 17 being in mutual support by means of a spherical surface 18 so that this annular intermediate support 15 forms a ball joint.
- the intermediate annular support 15 is mounted on the pin 6 by means of two opposite tapered roller bearings which are arranged between the inner ring 17 and the pin 6, these bearings being an integral part of a conventional bearing assembly marked with a general way by the reference 19.
- intermediate annular support 15 is held axially thanks on the one hand to an internal shoulder 20 of the main annular support 10 and thanks to flanges 21 mounted on the other face of the latter.
- the bearing 8 also comprises a system of lower corners generally identified by the reference 22 which is disposed between the main annular support 10 and the intermediate annular support 15, in the lower part of the space separating them, as well as two systems of lateral corners generally identified by the references 23 and 24 which are also arranged between the main annular support 10 and the intermediate annular support 15 and which are located in the opposite lateral parts of the space separating them.
- These three corner systems 22, 23 and 24 are constructed in the same way.
- the system of lower corners 22 comprises a first corner 25 which is fixed on the underside of the main annular support 10 as well as a second corner 26 which rests on the one hand on the horizontal external face of the intermediate annular support 15 and on the other hand on the first corner 25 by an inclined surface 27, this second corner 26 being displaceable longitudinally by means of a screw 28 which is engaged in a radial extension 29 of the corner 25.
- a screw 28 which is engaged in a radial extension 29 of the corner 25.
- the bearing 8 has two jacks 30 and 31 which are arranged on either side of the system of lower corners 22, between the main annular support 10 and the intermediate annular support 15, so as to act vertically.
- the purpose of these jacks 30 and 31 is to relieve the vertical pushing force towards the top of the lower corner system 22.
- the bearing 8 comprises a pressure screw 32 which extends through the upper part of the main annular support 10 and which is intended to act on the intermediate annular support 15 downwards in the direction of the lower corner system 22 .
- the bearing 9 has a main annular support 33 which is adapted to be mounted in the lower bearing half-block 4, an intermediate annular support 34 in which is rotatably mounted the pin 7 as well as three corner systems of which only the system of lower corners 35 is visible in this FIG. 5, these corner systems being disposed and acting between the main annular support 33 and the intermediate annular support 34.
- this bearing 9 has a vertical pressure screw 37 mounted on the upper part of the main annular support 33 to act on the intermediate annular support 34 downwards.
- the main annular support 33 and the corner systems including the corner system 35 have the same structure and are mounted in the same way as before.
- the intermediate annular support 34 is formed in one piece and the pin 7 is mounted in this intermediate annular support 34 by means of a spherical bearing 36 having two rows of rollers, spherical bearing which is part of a conventional bearing assembly 36a.
- the flat faces of the hexagonal central part 5a of the elongated beam 5 are particularly suitable for receiving machining units.
- one of its faces has longitudinal slides 38 on which is mounted a turning unit 39 which has a carriage 40 movable along the longitudinal slides 38 and on which is movable a carriage 41, substantially radially, which carries at its outer end a turning tool 42.
- FIG. 43 Another face of the hexagonal part 5a of the elongated beam 5 carries a welding unit 43 which has a radial support 44 on which is mounted, sliding radially, a carriage 45 which carries its end of the welding means, this welding unit 43 also having arms 46 which are movable substantially radially and carrying at their outer end guide rollers 47 whose axes extend in the direction of the arms 46.
- the machining machine 1 also comprises an electric motor 48 for driving the beam 5 in rotation via a transmission 49, the electric motor 48 being mounted on the transmission casing 49 which is itself carried by the end of the pin 6, the assembly formed by the electric motor 48 and the transmission 49 thus being suspended.
- the transmission casing 49 is connected to the lower bearing half-casing 3 by means of a torque recovery arm system 50.
- the end of the journal 7 of the beam 5 carries a suspended housing 51 forming an electrical manifold which is connected to the lower bearing half-casing 4 by means of a torque recovery arm system 52.
- the box forming an electrical collector 51 and the pin 7 have an axial passage 53 which allows the interior of the hexagonal beam 5 to be placed in communication with the exterior. This passage can for example be used for chip extraction during machining.
- the upper half-part of the turbine body 2 as well as the upper half-parts of the bearing housings are dismantled, the rotor and its bearings are extracted, the machining machine 1 is arranged as described below. above and the upper half-part of the turbine body 2 is reassembled.
- the hexagonal beam 5 is therefore in place of the extracted rotor and the bearings 8 and 9 are in place of the bearings of the rotor.
- the movable corners of the various corner systems provided in the bearings 8 and 9 are moved in the desired direction. , possibly using the lower thrust cylinders until the beam 5 is in its correct adjustment position, the torque recovery arm systems 50 and 52 deforming accordingly. In its adjustment position, the corner systems as well as the pressure screws 32 and 35 of the bearings 8 and 9 hold the beam 5 securely.
- the beam 5 being suitably adjusted and securely maintained thanks to the structure of the bearings 8 and 9, it is then possible using the machining units which are provided at the periphery of the beam 5, in particular the turning unit 40 and the welding unit 43, carry out the desired machining operations by rotating this beam 5 thanks to the drive motor 48 via the transmission 49, the electrical energy as well as the information transmissions necessary to carry out the machining operations transmitted by the box forming an electrical collector 51.
Abstract
Machine d'usinage polyvalente (1) adaptée pour effectuer sur site des opérations d'usinage, ou autres opérations, sur des corps annulaires tels que des corps annulaires de turbine (2), comprenant une poutre allongée (5) dont les extrémités sont munies de tourillons coaxiaux (6, 7) et qui porte des unités d'usinage mobiles (30), lesdits tourillons coaxiaux (6), étant montés sur les demi-parties inférieures des carters de palier (3, 4) du rotor de la turbine par l'intermédiaire de paliers (8, 9) présentant des supports annulaires entre lesquels sont prévus des moyens intermédiaires de maintien et de réglage permettant le positionnement de l'axe de ladite poutre (5) selon l'axe du corps annulaire à usiner (2).Multipurpose machining machine (1) suitable for performing on-site machining operations, or other operations, on annular bodies such as annular turbine bodies (2), comprising an elongated beam (5) whose ends are provided coaxial journals (6, 7) and which carries mobile machining units (30), said coaxial journals (6), being mounted on the lower half-parts of the bearing housings (3, 4) of the turbine rotor by means of bearings (8, 9) having annular supports between which are provided intermediate holding and adjustment means allowing the positioning of the axis of said beam (5) along the axis of the annular body to be machined ( 2).
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8506803 | 1985-05-03 | ||
FR8506803A FR2581333A1 (en) | 1985-05-03 | 1985-05-03 | VERSATILE MACHINING MACHINE SUITABLE FOR MAKING ANNULAR BODY MACHINING OPERATIONS ON THE SITE AND METHOD USING SAME |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0221122A1 true EP0221122A1 (en) | 1987-05-13 |
Family
ID=9318960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860902841 Withdrawn EP0221122A1 (en) | 1985-05-03 | 1986-05-02 | Polyvalent machining machine adapted to carry out on site machining operations on annular bodies and method using said machine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0221122A1 (en) |
FR (1) | FR2581333A1 (en) |
WO (1) | WO1986006669A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5159862A (en) * | 1991-01-18 | 1992-11-03 | Dresser-Rand Company | Method and apparatus for machining the inside surface of a closed hollow casing |
US5197361A (en) * | 1991-10-11 | 1993-03-30 | General Electric Company | Surface contouring tool |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1356871A (en) * | 1919-07-22 | 1920-10-26 | Martin William Hamilton | Boring-machine |
US1953402A (en) * | 1930-09-20 | 1934-04-03 | Conrad L Meister | Tool for boring and facing cylinders and the like |
DE1050635B (en) * | 1959-11-02 | 1900-01-01 | ||
FR1420375A (en) * | 1964-04-24 | 1965-12-10 | Zimmer Verfahrenstechnik | Adjustable bearing for rolling mill rolls |
US4176565A (en) * | 1978-09-05 | 1979-12-04 | Siegfried Schulz | Spherical bearing seat cutter machine |
WO1984001736A1 (en) * | 1982-10-26 | 1984-05-10 | Dufieux R | Polyvalent machining unit adapted to carry out on-site machinings |
-
1985
- 1985-05-03 FR FR8506803A patent/FR2581333A1/en not_active Withdrawn
-
1986
- 1986-05-02 WO PCT/FR1986/000152 patent/WO1986006669A1/en not_active Application Discontinuation
- 1986-05-02 EP EP19860902841 patent/EP0221122A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO8606669A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1986006669A1 (en) | 1986-11-20 |
FR2581333A1 (en) | 1986-11-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19861230 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE FR GB IT LI |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19881201 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HENNING, ROBERT Inventor name: DAVOUST, RENE Inventor name: PARIS, ROGER |