WO1986006669A1 - 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 machine Download PDF

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Publication number
WO1986006669A1
WO1986006669A1 PCT/FR1986/000152 FR8600152W WO8606669A1 WO 1986006669 A1 WO1986006669 A1 WO 1986006669A1 FR 8600152 W FR8600152 W FR 8600152W WO 8606669 A1 WO8606669 A1 WO 8606669A1
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WO
WIPO (PCT)
Prior art keywords
machining
annular supports
turbine
machine according
supports
Prior art date
Application number
PCT/FR1986/000152
Other languages
French (fr)
Inventor
Robert Henning
Roger Paris
René DAVOUST
Original Assignee
R. Dufieux
Electricite De France
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 R. Dufieux, Electricite De France filed Critical R. Dufieux
Publication of WO1986006669A1 publication Critical patent/WO1986006669A1/en

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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

Polyvalent machining machine (1) adapted to carry out on site machining operations, or other operations, on annular bodies such as annular bodies of turbine (2), comprising an elongate beam (5) of which the ends are provided with coaxial journals (6, 7) and which carries moving machining units (30), said coaxial journals (6) being mounted on the lower halves of bearing cases (3, 4) of the turbine rotor by means of bearings (8 and 9) presenting annular supports between which are provided intermediate supporting and adjusting means enabling to position the axis of said beam (5) according to the axis of the annular body to be machined (2).

Description

"Machine d'usinage polyvalente adapté pour effectuer sur site des opérations d'usinage de corps annulaires et procédé mettant en oeuvre cette machine"."Multipurpose machining machine adapted to carry out on-site operations for machining annular bodies and method using this machine".
La présente invention concerne une machine d'usinage polyvalente adaptée pour effectuer sur site des opérations d'usinage, ou autres opérations, sur des corps annulaires, en particulier sur des corps annulaires de turbines.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.
La machine d'usinage polyvalente selon la présente invention est telle qu'elle comprend une poutre allongée dont les extrémités sont munies de tourillons coaxiaux et qui porte des unités d'usinage mobiles, des supports annulaires intermédiaires dont lesquels lesdits tourillons sont montés en rotation, des supports annulaires principaux montés sur des bâtis fixes situés de part et d'autre du corps annulaire à usiner et entourant à distance lesdits supports annulaires intermédiaires, des moyens intermédiaires de maintien et de réglage reliant les supports intermédiaires annulaires et les supports annulaires principaux et adaptés de manière à permettre le positionnement de l'axe de ladite poutre selon l'axe du corps annulaire à usiner, et des moyens d'entraînement en rotation de ladite poutre. Selon la présente invention, lesdits moyens de maintien et de réglage comprennent de préférence des systèmes de coins inférieurs s 'étendant entre les supports annulaires principaux et les supports annulaires intermédiaires, dans l'espace inférieur les séparant, et des paires de coins latéraux s'étendant entre les supports annulaires principaux et les supports annulaires intermédiaires, dans les espaces latéraux les séparant, lesdits coins étant déplaçables sensiblement longitudinalement à l'axe de ladite poutre de manière à pouvoir déplacer verticalement et latéralement cette dernière en vue de son positionnement. Selon la présente invention, lesdits moyens de maintien et de réglage comprennent de préférence des vis de pression montées sur lesdits supports annulaires principaux et agissant sur lesdits supports annulaires intermédiaires sensiblement radialement. Selon la présente invention, lesdits moyens de maintien et de réglage comprennent de préférence des vérins disposés entre lesdits supports annulaires intermédiaires et lesdits supports annulaires principaux, dans l'espace inférieur les séparant, et agissant du bas vers le haut, de manière à en particulier soulager l'effort de positionnement de ladite poutre lors de son déplacement vers le haut.The multipurpose machining machine according to the present invention 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. According to the present invention, 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. According to the present invention, said holding and adjusting means preferably comprise pressure screws mounted on said main annular supports and acting on said intermediate annular supports substantially radially. According to the present invention, 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.
Selon la présente invention, au moins l'un desdits supports annulaires intermédiaires comprend, de préférence, une bague intérieure et une bague extérieure présentant des surfaces sphériques en contact, de manière à constituer une rotule.According to the present invention, 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.
Selon la présente invention, au moins l'un desdits tourillons est monté sur son support annulaire intermédiaire par l'intermédiaire d'un roulement à rotule. Selon la présente invention, lesdits moyens d'entrainement en rotation de ladite poutre comprennent de préférence un moteur électrique et une transmission, qui sont portés par l'extrémité de l'un des tourillons, au moins un bras de reprise de couple étant prévu entre leur carter et une partie fixe. Selon la présente invention, au moins l'un desdits tourillons porte, à son extrémité, un boîtier formant collecteur électrique, un bras de reprise de couple étant prévu entre son carter et une partie fixe.According to the present invention, at least one of said journals is mounted on its intermediate annular support by means of a spherical bearing. According to the present invention, 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. According to the present invention, 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.
Selon la présente invention, ladite poutre est de préférence de section hexagonale, au moins l'une de ses faces présentant des glissières longitudinales pour au moins une unité d'usinage.According to the present invention, said beam is preferably of hexagonal section, at least one of its faces having longitudinal slides for at least one machining unit.
La présente invention consiste également en un procédé d'usinage ou de reprise d'usinage de corps de turbine. Selon la présente invention, ce procédé consiste à démonter la demi-partie supérieure des deux carters de paliers du rotor de la turbine, à extraire le rotor de la turbine ainsi que ses paliers, à monter, à la place du rotor et de ses paliers, la machine d'usinage ci-dessus, ses supports annulaires principaux étant adaptés pour être montés et fixés dans la demi-partie inférieure des carters des paliers de la turbine, à remonter la demi-partie supérieure du corps de turbine, et à effectuer, à l'aide de ladite machine d'usinage, des opérations d'usinage, ou autres opérations souhaitées, sur le corps de turbine. La présente invention sera mieux comprise à l'étude d'une machine d'usinage sur site de corps annulaires de turbines décrite à titre d'exemple non limitatif et illustré par le dessin sur lequel :The present invention also consists of a method of machining or resuming machining of the turbine body. According to the present invention, 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:
- la figure 1 montre une vue de dessus de la machine d'usinage, le corps de turbine étant en coupe ; - la figure 2 montre une coupe radiale, dans sa partie médiane, de la machine d'usinage représentée sur la figure 1 ;- Figure 1 shows a top view of the machining machine, the turbine body being in section; - Figure 2 shows a radial section, in its middle part, of the machining machine shown in Figure 1;
- la figure 3 montre une coupe radiale verticale du palier gauche de la machine d'usinage représentée sur la figure 1 ; - la figure 4 montre une vue extérieure du palier représenté sur la figure 3, vu selon l'axe de la machine d'usinage, sur son coté intérieur ;- Figure 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;
- et la figure 5 représente une coupe radiale du palier de droite de la machine d'usinage représenté sur la figure 1. La machine d'usinage représentée sur les figures et repérée d'une manière générale par la référence 1 est destinée à effectuer des opérations de soudage et des opérations de tournage dans la paroi intérieure périphérique d'un corps annulaire de turbine repéré d'une manière générale par la référence 2 et est montée, pour cela, à la place du rotor de turbine et des paliers de ce dernier comme on le verra plus loin, cette turbine comprenant aux deux extrémités du corps de turbine 2 des demi-parties inférieures de carters de paliers du rotor.- And Figure 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.
Comme on peut le voir sur les figures 1 et 2, la machine d'usinage 1 comprend une poutre allongée 5 qui s'étend au travers du corps annulaire 2 à usiner et qui présente, sur toute sa longueur située en vis-à-vis du corps 2 à usiner une partie 5a de section hexagonale, cette poutre 5 étant creuse.As can be seen in Figures 1 and 2, 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.
La poutre 5 présente, à ses extrémités, des tourilIons 6 et 7 coaxiaux qui sont reliés à sa partie centrale hexagonale 5a grâce à des parties d'extrémité tronconiques 5b et 5c, ces tourillons 6 et 7 étant montés tournant sur les demi-parties inférieures 3 et 4 des carters de paliers de rotor de la turbine, par l'intermédiaire de paliers repérés d'une manière générale par les références 8 et 9.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.
En se reportant aux figures 3 et 4, on va maintenant décrire le palier 8 de montage du tourillon 6 sur le demi-carter de palier 3.Referring to FIGS. 3 and 4, we will now describe the bearing 8 for mounting the pin 6 on the bearing half-casing 3.
Le palier 8 comprend tout d'abord un support annulaire principal 10 qui s'adapte dans le demi-carter de palier 3, qui est réglé angulairement grâce à une clavette 11 qui pénètre dans la rainure inférieure du carter de palier 3 et qui est maintenu grâce à deux brides 12 et 13 qui sont fixées sur la face supérieure du demi-carter de palier 3, de chaque côté et qui agissent sur le support annulaire principal 10 du haut vers le bas. En outre, le support annulaire principal 10 est maintenu dans le sens axial grâce à des brides axiales 14 fixées sur les faces axiales du demi-carter de palier 3. Le palier de montage du tourillon 6 comprend en outre un support annulaire intermédiaire 15 qui s'étend à l'intérieur du support annulaire principal 10 et à distance pour ménager un espace entre eux. Ce support intermédiaire 15 comprend une bague extérieure 16 en deux parties séparées radialement et fixées entre elles ainsi qu'une bague intérieure 17, ces bagues 16 et 17 étant mutuellement en appui par l'intermédiaire d'une surface sphérique 18 de telle sorte que ce support intermédiaire annulaire 15 forme une rotule. En outre, le support annulaire intermédiaire 15 est monté sur le tourillon 6 grâce à deux roulements à rouleaux coniques opposés qui sont disposés entre la bague intérieure 17 et le tourillon 6, ces roulements faisant partie intégrante d'un montage de roulement classique repéré d'une manière générle par la référence 19.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. In addition, 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. In addition, 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.
On voit également que le support annulaire intermédiaire 15 est maintenu axialement grâce d'une part à un épaulement intérieur 20 du support annulaire principal 10 et grâce à des brides 21 montées sur l'autre face de ce dernier.It can also be seen that the 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.
On voit sur la figure 4 que le palier 8 comprend également un système de coins inférieures repéré d'une manière générale par la référence 22 qui est disposé entre le support annulaire principal 10 et le support annulaire intermédiaire 15, dans la partie inférieure de l'espace les séparant, ainsi que deux systèmes de coins latéraux repérés d'une manière générale par les références 23 et 24 qui sont également disposés entre le support annulaire principal 10 et le support annulaire intermédiaire 15 et qui sont situés dans les parties latérales opposées de l'espace les séparant. Ces trois systèmes de coins 22, 23 et 24 sont construits de la même manière.It can be seen in FIG. 4 that 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.
En particulier, on voit bien sur la figure 3 que le système de coins inférieurs 22 comprend un premier coin 25 qui est fixé sur la face inférieure du support annulaire principal 10 ainsi qu'un second coin 26 qui est en appui d'une part sur la face extérieure horizontale du support annulaire intermédiaire 15 et d'autre part sur le premier coin 25 par une surface inclinée 27, ce second coin 26 étant déplaçable longitudinalement grâce à une vis 28 qui est engagée dans un prolongement radial 29 du coin 25. En faisant tourner la vis de réglage 28, on peut ainsi déplacer longitudinalement le second coin 26 entre le premier coin 25 et le support annulaire intermédiaire 15 de telle sorte que ce dernier peut monter ou descendre et en conséquence déplacer vers le haut ou vers le bas l'extrémité de la poutre 5 portant le tourillon 6.In particular, it can be seen in FIG. 3 that 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. By rotating the adjusting screw 28, it is thus possible to longitudinally move the second corner 26 between the first corner 25 and the intermediate annular support 15 so that the latter can go up or down and consequently move up or down the end of the beam 5 carrying the pin 6.
En agissant sur les vis de réglage correspondantes des systèmes de coins latéraux 23 et 24, on peut également déplacer latéralement d'un côté ou de l'autre le support annulaire intermédiaire 15 et en conséquence déplacer l'extrémité de la poutre 5 portant le tourillon 6 latéralement d'un côté ou de l'autre.By acting on the corresponding adjustment screws of the lateral corner systems 23 and 24, it is also possible to move laterally on one side or the other the intermediate annular support 15 and consequently to move the end of the beam 5 carrying the trunnion 6 laterally on one side or the other.
En se reportant à la figure 4, on voit également que le palier 8 présente deux vérins 30 et 31 qui sont disposés de part et d'autre du système de coins inférieurs 22, entre le support annulaire principal 10 et le support annulaire intermédiaire 15, de manière à agir verticalement. Ces vérins 30 et 31 ont pour but de soulager l'effort vertical de poussée vers le haut du système de coin inférieur 22.Referring to FIG. 4, it can also be seen that 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.
En outre, le palier 8 comprend une vis de pression 32 qui s'étend au travers de la partie supérieure du support annulaire principal 10 et qui est destiné à agir sur le support annulaire intermédiaire 15 vers le bas en direction du système de coins inférieurs 22.In addition, 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 .
En se reportant à la figure 5, on va maintenant décrire le palier 9 de montage du tourillon 7 de l'autre extrémité de la poutre 5 sur la demi-partie inférieure du carter de palier 4.Referring to FIG. 5, we will now describe the bearing 9 for mounting the pin 7 of the other end of the beam 5 on the lower half-part of the bearing casing 4.
Comme précédemment, le palier 9 présente un support annulaire principal 33 qui est adapté pour être monté dans le demicarter de palier inférieur 4, un support annulaire intermédiaire 34 dans lequel est monté tournant le tourillon 7 ainsi que trois systèmes de coins dont seul le système de coins inférieurs 35 est visible sur cette figure 5, ces systèmes de coins étant disposés et agissant entre le support annulaire principal 33 et le support annulaire intermédiaire 34.As before, 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.
Comme précédemment, ce palier 9 présente une vis de pression verticale 37 montée sur la partie supérieure du support annulaire principal 33 pour agir sur le support annulaire intermédiaire 34 vers le bas.As before, 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.
Le support annulaire principal 33 et les systèmes de coins dont le système de coins 35 présentent la même structure et sont montés de la même manière que précédemment. Dans ce palier 9 cependant, le support annulaire intermédiaire 34 est formé d'une seule pièce et le tourillon 7 est monté dans ce support annulaire intermédiaire 34 par l'intermédiaire d'un roulement à rotule 36 présentant deux rangées de rouleaux, roulement à rotule qui fait partie d'un montage de roulement classique 36a.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. In this bearing 9 however, 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.
En se reportant de nouveau aux figures 1 et 2, on voit que les faces planes de la partie centrale hexagonale 5a de la poutre allongée 5 sont particulièrement adaptées pour recevoir des unités d'usinage. On voit en particulier que l'une de ses faces présente des glissières longitudinales 38 sur lesquelles est montée une unité de tournage 39 qui présente un chariot 40 deplaçable le long des glissières longitudinales 38 et sur lequel est deplaçable un chariot 41, sensiblement radialement, qui porte à son extrémité extérieure un outil de tournage 42. Une autre face de la partie hexagonale 5a de la poutre allongée 5 porte une unité de soudage 43 quiprésente un support radial 44 sur lequel est monté, coulissant radialement, un chariot 45 qui porte à son extrémité des moyens de soudage, cette unité de soudage 43 présentant également des bras 46 mobiles sensiblement radialement et portant à leur extrémité extérieure des galets de guidage 47 dont les axes s'étendent dans le sens des bras 46.Referring again to Figures 1 and 2, it can be seen that the flat faces of the hexagonal central part 5a of the elongated beam 5 are particularly suitable for receiving machining units. We see in particular that 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. 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.
On voit sur la figure 1 que la machine d'usinage 1 comprend également un moteur électrique 48 d'entraînement en rotation de la poutre 5 par l'intermédiaire d'une transmission 49, le moteur électrique 48 étant monté sur le carter de la transmission 49 qui est elle-même portée par l'extrémité du tourillon 6, l'ensemble formé par le moteur électrique 48 et la transmission 49 étant ainsi suspendu. Pour empêcher cet ensemble de tourner, le carter de la transmission 49 est relié au demi-carter inférieur de palier 3 grâce à un système de bras de reprise de couple 50.It can be seen in FIG. 1 that 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. To prevent this assembly from rotating, the transmission casing 49 is connected to the lower bearing half-casing 3 by means of a torque recovery arm system 50.
En outre, l'extrémité du tourillon 7 de la poutre 5 porte un boîtier suspendu 51 formant collecteur électrique qui est relié au demi-carter de palier inférieur 4 grâce à un système de bras de reprise de couple 52. Comme on le voit en traits pointillés sur la figure 1, le boîtier formant collecteur électrique 51 et le tourillon 7 présentent un passage axial 53 qui permet de mettre en communication l'intérieur de la poutre hexagonale 5 avec l'extérieur. Ce passage peut par exemple être utilisé pour l'extraction de copeaux lors de l'usinage. Lorsque l'on souhaite usiner par l'intérieur le corps de turbine 2 grâce à la machine d'usinage 1, on peut avantageusement procéder de la manière suivante. Tout d'abord, on démonte la demi-partie supérieure du corps de turbine 2 ainsi que les demi-parties supérieures des carters de palier, on extrait le rotor ainsi que ses paliers, on dispose la machine d'usinage 1 comme décrit ci-dessus et on remonte la demi-partie supérieure du corps de turbine 2. La poutre hexagonale 5 se trouve donc à la place du rotor extrait et les paliers 8 et 9 se trouvent a la place des paliers du rotor. Afin de disposer l'axe de la poutre 5 selon l'axe du rotor, ou l'axe du corps de turbine 2 à usiner, on déplace dans le sens souhaité les coins mobiles des différents systèmes de coins prévus dans les paliers 8 et 9, en s'aidant éventuellement des vérins inférieurs de poussée jusqu'à amener la poutre 5 dans sa bonne position de réglage, les systèmes de bras de reprise de couple 50 et 52 se déformant en conséquence. Dans sa position de réglage, les systèmes de coins ainsi que les vis de pression 32 et 35 des paliers 8 et 9 maintiennent solidement la poutre 5.In addition, 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. As can be seen in lines dotted in FIG. 1, 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. When it is desired to machine the turbine body 2 from the inside using the machining machine 1, it is advantageous to proceed as follows. First of all, 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. In order to arrange the axis of the beam 5 along the axis of the rotor, or the axis of the turbine body 2 to be machined, 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.
La poutre 5 étant convenablement réglée et solidement maintenu grâce à la structure des paliers 8 et 9, on peut alors à l'aide des unités d'usinage qui sont prévus à la périphérie de la poutre 5, en particulier l'unité de tournage 40 et l'unité de soudage 43, effectuer les opérations d'usinage souhaitées en faisant tourner cette poutre 5 grâce au moteur d'entraînement 48 via la transmission 49, l'énergie électrique ainsi que les transmissions d'informations nécessaires pour effectuer les usinages étant transmises par le boîtier formant collecteur électrique 51.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.
Lorsque les opérations d'usinage sur le corps de. turbine 2 sont effectuées, il suffit de démonter la demi-partie supérieure de ce corps de turbine 2, extraire la machine d'usinage 1, remonter le rotor et ses paliers, remonter la demi-partie supérieure du corps de turbine 2 ainsi que les demi-parties supérieures des carters de paliers.When the machining operations on the body of. turbine 2 are carried out, it suffices to dismantle the upper half-part of this turbine body 2, extract the machining machine 1, reassemble the rotor and its bearings, reassemble the upper half-part of the turbine body 2 and the upper half-parts of the bearing housings.
La présente invention ne se limite pas à l'exemple ci-dessus décrit. Bien des variantes de réalisation sont possibles sans sortir du cadre défini par les revendications annexées. The present invention is not limited to the example described above. Many alternative embodiments are possible without departing from the scope defined by the appended claims.

Claims

REVENDICATIONS 1. Machine d'usinage polyvalente (1) adaptée pour effectuer sur site des opérations d'usinage ou autres opérations, sur des corps annulaires, en particulier sur des corps annulaires de turbine (2), caractérisée par le fait qu'elle comprend une poutre allongée (5) dont les extrémités sont munies de tourillons coaxiaux (6, 7) et qui porte des unités d'usinage mobiles (39, 43) ; des supports annulaires intermédiaires (15, 34) dans lesquels lesdits tourillons (6, 7) sont montés en rotation, des supports annulaires principaux (10, 33) montés sur des bâtis fixes (3, 4) situés de part et d'autre du corps annulaire à usiner et entourant à distance lesdits supports annulaires intermédiaires (15, 34) ; des moyens intermédiaires de maintien et de réglage desdits supports annulaires (15, 34) par rapport auxdits supports annulaires principaux (10, 33) comprenant des systèmes de coins (22, 23, 24, 35) dont les coins agissent entre lesdits supports annulaires principaux et lesdits supports annulaires intermédiaires et sont déplaçables, sensiblement longitudinalement à l'axe de ladite poutre allongée de manière à permettre le positionnement de l'axe de cette poutre allongée (5) selon l'axe du corps annulaire à usiner (2), et des moyens d'entraînement (48, 49) en rotation de ladite poutre. CLAIMS 1. Multipurpose machining machine (1) adapted to carry out machining or other operations on site, on annular bodies, in particular on annular turbine bodies (2), characterized in that it comprises an elongated beam (5), the ends of which are provided with coaxial pins (6, 7) and which carries mobile machining units (39, 43); intermediate annular supports (15, 34) in which said pins (6, 7) are mounted in rotation, main annular supports (10, 33) mounted on fixed frames (3, 4) located on either side of the annular body to be machined and surrounding said intermediate annular supports (15, 34) at a distance; intermediate means for holding and adjusting said annular supports (15, 34) relative to said main annular supports (10, 33) comprising corner systems (22, 23, 24, 35) whose corners act between said main annular supports and said intermediate annular supports and are movable, substantially longitudinally to the axis of said elongated beam so as to allow the positioning of the axis of this elongated beam (5) along the axis of the annular body to be machined (2), and drive means (48, 49) for rotating said beam.
2. Machine d'usinage selon la revendication 1, caractérisée par le fait que lesdits moyens de maintien et de réglage comprennent :2. Machining machine according to claim 1, characterized in that said holding and adjusting means comprise:
- des systèmes de coins inférieurs (22, 35) s 'étendant entre lesdits supports annulaires principaux (10, 33) et lesdits supports annulaires intermédiaires (15, 34), dans l'espace inférieur les séparant,- lower corner systems (22, 35) extending between said main annular supports (10, 33) and said intermediate annular supports (15, 34), in the lower space separating them,
- et des systèmes de coins latéraux s'étendant entre lesdits supports annulaires principaux (10, 33) et lesdits supports annulaires intermédiaires (15, 34) dans les espaces latéraux les séparant, lesdits coins étant déplaçables sensiblement longitudinalement à l'axe de ladite poutre (5) de manière à pouvoir déplacer cette poutre dans le sens vertical et dans le sens latéral.- And side corner systems extending between said main annular supports (10, 33) and said intermediate annular supports (15, 34) in the lateral spaces separating them, said corners being movable substantially longitudinally to the axis of said beam (5) so as to be able to move this beam in the vertical direction and in the lateral direction.
3. Machine d'usinage selon l'une des revendications 1 et 2, caractérisée par le fait que lesdits moyens de maintien et de réglage comprennent des vis de pression (32, 37) montées sur lesdit supports annulaires principaux (10, 33) et agissant sur lesdits supports annulaires intermédiaires (15, 34) sensiblement radialement. 3. Machining machine according to one of claims 1 and 2, characterized in that said holding and adjusting means comprise pressure screws (32, 37) mounted on said main annular supports (10, 33) and acting on said intermediate annular supports (15, 34) substantially radially.
4. Machine d'usinage selon l'une quelconque des revendications précédentes, caractérisée par le fait que lesdits moyens de maintien et de réglage comprennent des vérins (30, 31) disposés entre lesdits supports annulaires principaux (10, 33 ) et les supports annulaires intermédiaires (15, 34) et agissant sur ces derniers du bas vers le haut.4. Machining machine according to any one of the preceding claims, characterized in that the said holding and adjustment means comprise jacks (30, 31) disposed between the said main annular supports (10, 33) and the annular supports intermediates (15, 34) and acting on them from bottom to top.
5. Machine d'usinage selon l'une quelconque des revendications précédentes, caractérisée par le fait qu'au moins l'un desdits supports annulaires intermédiaires (15) comprend une bague extérieure (16) et une bague intérieure (17) qui présentent des surfaces sphériques (18) en contact de manière à constituer une rotule.5. Machining machine according to any one of the preceding claims, characterized in that at least one of said intermediate annular supports (15) comprises an outer ring (16) and an inner ring (17) which have spherical surfaces (18) in contact so as to constitute a ball joint.
6. Machine d'usinage selon l'une quelconque des revendications précédentes, caractérisée par le fait qu'au moins l'un desdits tourillons (7) est monté sur son support annulaire intermédiaire (34) par l'intermédiaire d'un roulement à rotule (36).6. Machining machine according to any one of the preceding claims, characterized in that at least one of said journals (7) is mounted on its intermediate annular support (34) by means of a bearing with ball joint (36).
7. Machine d'usinage selon l'une quelconque des revendications précédentes, caractérisée par le fait que lesdits moyens d'entraînement en rotation de ladite poutre (5) comprennent un moteur électrique (48) et une transmission (49) qui sont portées par l'extémité de l'un desdits tourilons (6), un système de bras de reprise de couple (50) étant prévu entre leur carter et une partie fixe.7. Machining machine according to any one of the preceding claims, characterized in that the said means for driving in rotation of the said beam (5) comprise an electric motor (48) and a transmission (49) which are carried by the end of one of said journals (6), a torque recovery arm system (50) being provided between their casing and a fixed part.
8. Machine d'usinage selon l'une quelconque des revendications précédentes, caractérisée par le fait que l'un desdits tourillons (7) porte à son extrémité un boîtier formant collecteur électrique (16, 51), un système de bras de reprise de couple (52) étant prévu entre son carter et une partie fixe.8. Machining machine according to any one of the preceding claims, characterized in that one of said pins (7) carries at its end a box forming an electrical collector (16, 51), a system of recovery arm of torque (52) being provided between its casing and a fixed part.
9. Machine d'usinage selon l'une quelconque des revendications précédentes, caractérisée par le fait que ladite poutre (5) est de section hexagonale, au moins l'une de ses faces présentant des glissières longitudinales pour au moins une unité d'usinage.9. Machining machine according to any one of the preceding claims, characterized in that said beam (5) is of hexagonal section, at least one of its faces having longitudinal slides for at least one machining unit .
10. Procédé d'usinage ou de reprise d'usinage de corps de turbines (2) caractérisé par le fait qu'il consiste :10. A method of machining or resuming machining of turbine bodies (2) characterized in that it consists:
- à démonter la demi-partie supérieure du corps de turbine, ainsi que la demi-partie supérieure des deux carters de paliers du rotor de la turbine- to dismantle the upper half-part of the turbine body, as well as the upper half-part of the two bearing housings of the turbine rotor
- à extraire le rotor de la turbine ainsi que ses paliers, - à monter, à la place du rotor et de ses paliers, la machine selon l'une quelconque des revendications précédentes, ses supports annulaires principaux étant adaptés pour être montés et fixés dans la demi-partie inférieure des carters de paliers de la turbine, - à remonter la demi-partie supérieure du corps de turbine,- extracting the rotor from the turbine and its bearings, - to mount, in place of the rotor and its bearings, the machine according to any one of the preceding claims, its main annular supports being adapted to be mounted and fixed in the lower half-part of the bearing housings of the turbine, - to reassemble the upper half-part of the turbine body,
- et à effectuer à l'aide de ladite machine les opérations d'usinage, ou autres opérations souhaitées, sur le corps de turbine. - And to perform using said machine the machining operations, or other desired operations, on the turbine body.
PCT/FR1986/000152 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 WO1986006669A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR85/06803 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

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Cited By (2)

* Cited by examiner, † Cited by third party
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

Citations (6)

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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
FR1420375A (en) * 1964-04-24 1965-12-10 Zimmer Verfahrenstechnik Adjustable bearing for rolling mill rolls
DE1261707B (en) * 1959-11-02 1968-02-22 Egon Kirchner Dr Ing Adjustment device by means of wedges, especially for bearings
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
DE1261707B (en) * 1959-11-02 1968-02-22 Egon Kirchner Dr Ing Adjustment device by means of wedges, especially for bearings
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

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Publication number Publication date
EP0221122A1 (en) 1987-05-13
FR2581333A1 (en) 1986-11-07

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