EP1024914B1 - Machine de roulage pour piece annulaire a former - Google Patents
Machine de roulage pour piece annulaire a former Download PDFInfo
- Publication number
- EP1024914B1 EP1024914B1 EP98950159A EP98950159A EP1024914B1 EP 1024914 B1 EP1024914 B1 EP 1024914B1 EP 98950159 A EP98950159 A EP 98950159A EP 98950159 A EP98950159 A EP 98950159A EP 1024914 B1 EP1024914 B1 EP 1024914B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rollers
- machine according
- rolling machine
- supporting
- rolling
- 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 - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
- B21H1/12—Making articles shaped as bodies of revolution rings of restricted axial length rings for ball or roller bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
Definitions
- the present invention relates generally to rolling of an annular part with a view to forming it by rolling, which, in practical, is cold rolling.
- the annular part to be formed is, for example, a ring for ball bearing, or a ball retaining cage for constant velocity transmission with balls.
- a machine comprising, on the one hand, various rotary members, namely, a forming mandrel, which is rotatably mounted about a first axis, and on which the annular part to be formed, or, more precisely, a blank thereof, must be engaged with play, a forming wheel, which is rotatably mounted around a second axis parallel to the first, and which is capable of defining, with the forming mandrel, a rolling envelope corresponding to the final shape sought for the cross section of this annular part, and two rollers support, which, coaxial with each other, without necessarily being carried by the same shaft, are rotatably mounted around a third axis parallel to the two preceding ones and situated in the same plane as these, and which are based on the forming mandrel on either side of the envelope rolling to absorb the reaction to the radial rolling force provided by the forming wheel, and, on the other hand, drive means specific to the rotational drive of at least
- the worked annular part can be considered as constituting a finished part, i.e. a part not requiring no subsequent resumption of machining, except for a possible heat treatment and possible rectification after this one.
- front control rollers means rollers which are intended to control a form of annular part already produced.
- rollers have a completely different function from that of axial forming rollers such as those described in US-A-3 patent 681,962, in particular to FIGS. 4 to 8 of this document.
- the forming wheel and the forming mandrel do not not define a rolling envelope between them, so that the axial deformation of the material is free between these two tools.
- the present invention generally relates to a provision which, from this double point of view, gives particularly satisfaction.
- a rolling machine for annular part to be formed of the kind comprising, on the one hand, various members rotary, i.e., a forming mandrel, which is rotatably mounted around a first axis, a forming wheel, which is rotatably mounted around a second axis parallel to the first, and which is capable of defining, with the mandrel of forming, a rolling envelope corresponding to the final shape sought for the cross section of the annular part concerned, and two rollers support, which, rotatably mounted around a third axis parallel to the two previous and located in the same plane as these, are based on the mandrel forming on either side of the rolling envelope, and, on the other hand, drive means specific to the rotational drive of at least one of these rotary members,
- this rolling machine generally being characterized in that, two face control rollers being further provided to intervene each on the side faces of the part respectively annular at a distance from the rolling envelope, these control rollers face are
- the axes of the face control rollers extend in the same plane as that, hereinafter said for convenience rolling plane, in which the axes of the mandrel of forming, the forming wheel, and the support rollers.
- the work of the rolling machine according to the invention is done under conditions of symmetry and stability advantageously favorable to face control sought.
- the following rolling machine the invention comprises follower rollers, which, rotatably mounted, frame the rolling envelope for maintaining, in the rolling plane, the axis of the worked annular part.
- the annular part 10 is intended to form the outer ring of a ball bearing.
- the faces 13 of the annular part 10 are not planar, but comprise at contrary, in draft, two frustoconical sections which join one another along a joint plane T, Figures 4A, 4A '.
- the invention proposes, by a face check, the elimination of these surface irregularities.
- the initial 10 'draft is, for example, and such that shown, a simple section of tube, the internal face 12 'of which is smooth.
- the rolling used for this purpose is, in practice, according to modalities described in more detail later, on a rolling 15, and it is necessarily accompanied by an increase in the diameter of the annular piece 10 worked.
- the rolling machine 15 comprises, on the one hand, on the one hand, various rotary members 16, 18 , 20, namely, a forming mandrel 16, which is rotatably mounted around a first axis A 1 , and on which the annular part 10 to be formed, or, more precisely, the blank 10 'thereof, must be entered with play, one.
- forming wheel 18, which is rotatably mounted around a second axis A 2 parallel to the first, and which is capable of defining, with the forming mandrel 16, a rolling envelope 19, corresponding to the final shape sought for the cross section of this annular part 10, and two support rollers 20, which, rotatably mounted around a third axis A 3 parallel to the previous two and located in the same plane P as these, said here for convenience of rolling plane , are based on the forming mandrel 16 on either side of the rolling envelope 19, and, on the other hand, drive means E specific to the drive in rotation of at least one of these rotary members 16, 18, 20.
- the forming mandrel 16 comprises, on the one hand, a median section 21, which is of reduced cross section, and on which annularly protruding a duly profiled rib 22 for forming the groove 14, and, on the other hand, two lateral sections 23, which are of section larger transverse and on which bear the support rollers 20.
- the forming wheel 18 itself has a middle section 24, which is of reduced cross section, and two lateral sections 25, which are of larger cross section, to contain the axial creep of the annular part 10.
- the rolling machine 15 also comprises, on either side of the forming mandrel 16, two follower rollers 26, which, mounted to rotate about axes A 5 , frame the rolling envelope 19.
- These follower rollers 26 operate on the external face 11 of the annular part 10, in order to control the roundness and the symmetry and to take up any deformations thereof, and it follows that, during forming, the axis A 4 of this annular part 10 remains in the rolling plane P of the axes A 1 ,, A 2 , A 3 .
- the axes A 5 of the follower rollers 26 are therefore away from this rolling plane P, on either side of it.
- These axes A 5 are substantially parallel to the axes A 1 , A 2 , A 3 above , but one of them, at least, can however be advantageously slightly inclined with respect to these, to compensate for possible defects in external taper.
- the follower rollers 26 are arranged so perfectly symmetrical with respect to the rolling plane P, being for this do duly maintained by means of support, known in themselves and not shown.
- the drive means E which have only been schematically shown in broken lines in Figure 5, are also of known type.
- the drive means E are applied to the forming wheel 18 and to the support rollers 20.
- the rolling machine 15 finally comprises a probe 27, for checking the diameter of the annular part 10.
- This probe 27 intervenes between the support rollers 20.
- two face control rollers 29 being in additionally provided to each intervene respectively on the lateral faces 13 of the annular part 10 at a distance from the rolling envelope 19, such as shown schematically in Figure 5, these face control rollers 29 are arranged between the support rollers 20, in the overall volume enveloping the outer outline of these.
- the axes A 6 of the face control rollers 29 extend in the same plane as that in which the axes A 1 of the forming mandrel 16 also extend. , A 2 of the forming wheel 18, and A 3 of the support rollers 20, that is to say in the rolling plane P.
- the face control rollers 29 are cylindrical, and, at least at the end of work, their axes A 6 are parallel to each other.
- their diameter d is less than their length I.
- this diameter d is less than at least half the length I.
- the diameter d of the face control rollers 29 is preferably chosen to be as low as possible so that these rollers face control 29 are as penetrating as possible with little effort.
- the face control rollers 29 are each respectively at least partly arranged inside the support rollers 20, each of these support rollers 20 comprising, recessed, on its internal face 30, and withdrawal from its periphery 31, a recess 32 in which the roller corresponding face control 29 is at least partially engaged.
- the support rollers 20 can rest on the mandrel of forming 16 as close as possible to the rolling envelope 19, which allows a effective support of this forming mandrel 16 by these support rollers 20 and therefore limits its bending.
- the recess 32 which each of the support rollers 20 thus comprises extends circularly all around its axis A 3 .
- Each of the support rollers 20 thus comprises a flange 20a, which, at its periphery 31, annularly, projecting towards the other, a flange 20b, and which, in its central area, has, axially, projecting in the direction opposite the previous one, a thick part 20c forming a hub.
- the face control rollers 29 are free in rotation.
- each of these face control rollers 29 is rotatably mounted on a support arm 34 pivotally mounted about a main pivot axis A 7 orthogonal to the axis A 3 of the support rollers 20 .
- each of the support arms 34 which thus comprises the rolling machine 15 according to the invention extends generally diametrically with respect to the rollers support 20 and has a central recess 35, of circular outline, for the passage, in particular, of the support shaft 36 of these support rollers 20.
- This support shaft 36 has been shown diagrammatically in broken lines on Figure 8.
- the main pivot axis A 7 of each of the support arms 34 intersects the axis A 3 of the support rollers 20, as shown schematically in lines interrupted in Figure 7.
- the two support arms 34 which are of configuration analogous, each in the form of a flange, with a part median annular 37, around their central recess 35, and, in positions diametrically opposite to each other, two radial extensions 38 in favor of one of which the front control roller intervenes 29 corresponding.
- the support arms 34 are connected to each other, in an articulated manner, by at least one flange 39, here called for simple convenience central flange.
- two central flanges 39 are provided, which, parallel to one another, each extend respectively in diametrically opposite positions relative to each other and intersect one and the the other main pivot axis A 7 of each of the support arms 34.
- the main pivot axis A 7 of each of the support arms 34 is materialized by two pins 40, which are directed, radially, towards the axis A 3 of the support rollers 20, and which , directly or indirectly, bear, radially, in diametrically opposite positions with respect to each other, on a sleeve 41 centered on the axis A 3 of the support rollers 20.
- this sleeve 41 is in two parts, namely, an internal part 41A, which, engaged on the support shaft 36 of the support rollers 20, and therefore integral in rotation thereof, is in axial contact with the corresponding support roller 20, and an external part 41B, which, forming a bearing, surrounds the internal part 41A, with the interposition of rolling means 42, and on which the pins 40 bear.
- the pins 40 carry on the sleeve 41 by means of bearings 43, FIG. 7, and, for the support of these, the external part 41B of this sleeve 41 has, in positions diametrically opposite to each other, two flats 44.
- the support arms 34 constitute, with the flanges 39 connecting them, a clamp-like structure, and, at their opposite end to the face control rollers 29, they are jointly subjected to a spacer 45.
- this spacing device 45 intervenes between the arms support 34, and more precisely between the radial extensions 38 corresponding to these.
- this spacing device 45 implements a wedge 46, which, under the control of a control device 47, and as shown diagrammatically by the double arrow F 1 in FIG. 7, is mounted movable in a plane perpendicular to the axis A 3 of the support rollers 20, and therefore perpendicular to the rolling plane P, preferably micrometrically.
- the wedge 46 intervenes between two blocks 48 whose opposite surface is semi-cylindrical, with generatrices parallel to the main pivot axis A 7 of the support arms 34, and on which these arms support 34 are each articulated respectively.
- the two support arms 34 are also jointly coupled to an anchoring device 52 capable of blocking them in rotation relative to the axis A 3 of the rollers of support 20, figure 7.
- each of the face control rollers 29 is directly rotatably mounted on its support arm 34.
- each of the face control rollers 29 extends into a recess 53 in its arm support 34 which runs right through it.
- this recess 53 affects, in the manner a slot, the corresponding radial extension 38 of this support arm 34, and, at the end of this radial extension 38, it is closed by a flange of centering 55.
- shaft 56 of such a face control roller 29 can be advantageously supported at either end, such that shown schematically in broken lines in Figure 7, and as shown in lines shown in Figure 8.
- stop means are also provided to ensure that the support arms 34 of the face control rollers 29 stop rotating with respect to their axis A 3 , and thus allow the axes A 6 of the control rollers to be maintained. side 29 in the rolling plane P.
- the face control rollers 29 are only put in timely action during forming, depending on the diameter of the annular part 10 to be worked.
- corner 46 is then pressed between the extensions 38 support arms 34 opposite the face control rollers 29.
- this inclination can also be compensated for by using tapered front control rollers 29, as shown schematically in Figure 11.
- central flanges 39 connecting to each other the two support arms 34 advantageously serve to take up at this level the radial rolling reactions and thus advantageously relieve the means bearing 42 internal to the sleeve 41.
- the axes A 6 of the face control rollers 29 extend in the rolling plane P, they permanently intersect the axis A 4 of the annular part 10 during forming, despite the change in diameter of this, which, as a corollary with the action of the follower rollers 26, is advantageously a guarantee of maintaining the circular configuration of this annular part 10.
- the embodiment more particularly represented on the Figures 12 to 14 concern the case where the front control to be performed in front work asymmetrically on the side faces 13 of the part annular 10, it is possible to choose one of these lateral faces 13 as reference face for the assembly.
- the support arms 34 are connected, to each other, at a distance from their main pivot axis A 7 , and in an articulated manner, each along a secondary axis.
- pivot A ' 7 parallel to the main pivot axis A 7 above , by at least one flange 57, hereinafter called for simple convenience end flange, which is parallel to the central flanges 39, and which is the same length than these.
- the support arms 34 then constitute, with the flanges 39 and 57 which connect them, a structure in the form of a deformable parallelogram, and, as shown diagrammatically by a double arrow F 4 in the figure. 12, the assembly is subjected to a control device 58 capable of allowing its position control with respect to the annular part 10 to be worked, by rotation around the pivot axes A 7 , A ' 7 , which, the one of the support arms 34 being for example taken as a reference, makes it possible to work preferentially one of the lateral faces 13 of this annular part 10 rather than the other of these.
- each of the face control rollers 29 is rotatably mounted on its support arm 34 by means of a roller support 59 pivotally mounted on this support arm 34 around a tilting axis A 8 , which, parallel to that A 6 of this face control roller 29, extends at a distance therefrom.
- roller support 59 is subjected to two jacks 60, 61, which each extend respectively on either side of its pivot axis A 8 , and which bear on the arm support 34.
- these jacks 60, 61 are integrated into this support arm 34.
- the relative alignment of the face control rollers 29 can be ensured by acting accordingly on the control device 58 and / or on the cylinders 60, 61.
- Different pressures in each of the cylinders 60 allow obtain a pressure level for one of the face control rollers 29 higher than that of the other, and thereby respect the asymmetry relationship to satisfied.
- the surface lamination of the lateral faces thereof can be done at an angle to this axis, whatever the nature, cylindrical or conical, face control rollers used.
- these rolls of face control can optionally have a scalable exterior surface if desired.
- this ring which comprises a groove
- the forming wheel and the forming mandrel in turn have inverted conjugate forms.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Description
Claims (27)
- Machine de roulage pour pièce annulaire à former, du genre comportant, d'une part, divers organes rotatifs (16, 18, 20), à savoir, un mandrin de formage (16), qui est monté rotatif autour d'un premier axe (A1), une molette de formage (18), qui est montée rotative autour d'un deuxième axe (A2) parallèle au premier, et qui est apte à définir, avec le mandrin de formage (16), une enveloppe de roulage (19) correspondant à la forme finale recherchée pour la section transversale de la pièce annulaire (10) concernée, et deux galets d'appui (20), qui, montés rotatifs autour d'un troisième axe (A3) parallèle aux deux précédents et situé dans un même plan (P) que ceux-ci, dit ci-après plan de roulage, s'appuient sur le mandrin de formage (16) de part et d'autre de l'enveloppe de roulage (19), et, d'autre part, des moyens d'entraínement (E) propres à l'entraínement en rotation de l'un au moins des organes rotatifs (16, 18, 20), caractérisée en ce que, deux rouleaux de contrôle de face (29) étant en outre prévus pour intervenir chacun respectivement sur les faces latérales (13) de la pièce annulaire (10) à distance de l'enveloppe de roulage (19), ces rouleaux de contrôle de face (29) sont disposés entre les galets d'appui (20), dans le volume hors tout enveloppant le contour extérieur de ceux-ci.
- Machine de roulage suivant la revendication 1, caractérisée en ce qu'elle comporte deux galets suiveurs (26), qui, montés rotatifs, encadrent l'enveloppe de roulage (19) et interviennent sur la face externe (11) de la pièce annulaire (10).
- Machine de roulage suivant la revendication 2, caractérisée en ce que les galets suiveurs (26) sont disposés de manière symétrique par rapport au plan de roulage (P).
- Machine de roulage suivant l'une quelconque des revendications 2, 3, caractérisée en ce que les axes (A5) des galets suiveurs (26) sont sensiblement parallèles aux axes (A1, A2, A3) précédents, l'un d'entre eux, au moins, pouvant cependant être légèrement incliné par rapport à ceux-ci.
- Machine de roulage suivant l'une quelconque des revendications 1 à 4, caractérisée en ce que les axes (A6) des rouleaux de contrôle de face (29) s'étendent dans le plan de roulage (P).
- Machine de roulage suivant l'une quelconque des revendications 1 à 5, caractérisée en ce que les rouleaux de contrôle de face (29) sont cylindriques et leurs axes (A6) sont parallèles l'un à l'autre.
- Machine de roulage suivant la revendication 6, caractérisée en ce que le diamètre (d) des rouleaux de contrôle de face (29) est inférieur à leur longueur (I).
- Machine de roulage suivant la revendication 7, caractérisée en ce que le diamètre (d) des rouleaux de contrôle de face (29) est inférieur à au moins la moitié de leur longueur (I).
- Machine de roulage suivant l'une quelconque des revendications 1 à 5, caractérisée en ce que les rouleaux de contrôle de face (29) sont coniques.
- Machine de roulage suivant l'une quelconque des revendications 1 à 9, caractérisée en ce que les rouleaux de contrôle de face (29) sont chacun respectivement au moins en partie disposés à l'intérieur même des galets d'appui (20), chacun de ces galets d'appui (20) comportant, en creux, sur sa surface interne (30), et en retrait par rapport à sa périphérie (31), un évidement (32) dans lequel le rouleau de contrôle de face (29) correspondant est au moins en partie engagé.
- Machine de roulage suivant la revendication 10, caractérisée en ce que l'évidement (32) que comporte chacun des galets d'appui (20) s'étend circulairement tout autour de son axe (A3).
- Machine de roulage suivant l'une quelconque des revendications 1 à 11, caractérisée en ce que les rouleaux de contrôle de face (29) sont libres en rotation.
- Machine de roulage suivant l'une quelconque des revendications 1 à 12, caractérisée en ce que chacun des rouleaux de contrôle de face (29) est monté rotatif sur un bras de support (34) autour d'un axe principal de pivotement (A7) orthogonal à l'axe (A3) des galets d'appui (20).
- Machine de roulage suivant la revendication 13, caractérisée en ce que chacun des bras de support (34) qu'elle comporte s'étend globalement diamétralement par rapport aux galets d'appui (20) et présente un évidement central (35) pour le passage de l'arbre de support (36) de ces galets d'appui (20).
- Machine de roulage suivant la revendication 14, caractérisée en ce que l'axe principal de pivotement (A7) de chacun des bras de support (34) recoupe l'axe (A3) des galets d'appui (20).
- Machine de roulage suivant la revendication 15, caractérisée en ce que, au niveau de leur axe principal de pivotement (A7), les bras de support (34) sont reliés l'un à l'autre, de manière articulée, par au moins une bride (39), dite ici bride centrale.
- Machine de roulage suivant l'une quelconque des revendications 15, 16, caractérisée en ce que l'axe principal de pivotement (A7) de chacun des bras de support (34) est matérialisé par deux tourillons (40), qui, directement ou indirectement, prennent appui, radialement, en positions diamétralement opposées l'un par rapport à l'autre, sur un manchon (41) centré sur l'axe (A3) des galets d'appui (20).
- Machine de roulage suivant la revendication 17, caractérisée en ce qu'il y a annulairement un jeu radial (J) entre les bras de support (34) et le manchon (41).
- Machine de roulage suivant l'une quelconque des revendications 16 à 18, caractérisée en ce que, à leur extrémité opposée aux rouleaux de contrôle de face (29), les bras de support (34) sont conjointement soumis à un dispositif d'écartement (45), et ils constituent, avec la ou les brides centrales (39) qui les relient, une structure en forme de pince.
- Machine de roulage suivant la revendication 19, caractérisée en ce que le dispositif d'écartement (45) intervient entre les bras de support (34) et met en oeuvre un coin (46) monté mobile dans un plan perpendiculaire à l'axe (A3) des galets d'appui (20).
- Machine de roulage suivant l'une quelconque des revendications 16 à 18, caractérisée en ce que, à distance de leur axe principal de pivotement (A7), les bras de support (34) sont reliés l'un à l'autre, de manière articulée, par au moins une bride (57), dite ici bride d'extrémité, qui est parallèle à la ou aux brides centrales (39), et qui, de même longueur que ces dernières, constitue avec l'ensemble une structure en forme de parallélogramme déformable, et l'une au moins des brides (39, 57) est soumise à un dispositif de commande (58) propre à permettre un contrôle de position de l'ensemble par rapport à la pièce annulaire (10) à travailler.
- Machine de roulage suivant l'une quelconque des revendications 13 à 21, caractérisée en ce que chacun des rouleaux de contrôle de face (29) est directement monté rotatif sur son bras de support (34).
- Machine de roulage suivant la revendication 22, caractérisée en ce que chacun des rouleaux de contrôle de face (29) s'étend dans un évidement (53) de son bras de support (34) qui traverse de part en part celui-ci.
- Machine de roulage suivant l'une quelconque des revendications 19 à 21, caractérisé en ce que chacun des rouleaux de contrôle de face (29) est monté rotatif sur son bras de support (34) par l'intermédiaire d'un support de rouleau (59) monté basculant sur le bras de support (34) autour d'un axe de basculement (A8), qui, parallèle à celui (A6) du rouleau de contrôle de face (29), s'étend à distance de celui-ci.
- Machine de roulage suivant la revendication 24, caractérisée en ce que le support de rouleau (59) est soumis à deux vérins (60, 61), qui s'étendent chacun respectivement de part et d'autre de son axe de basculement (A8), et qui prennent appui sur le bras de support (34).
- Machine de roulage suivant la revendication 25, caractérisée en ce que les vérins (60, 61) sont intégrés au bras de support (34).
- Machine de roulage suivant l'une quelconque des revendications 13 à 26, caractérisée en ce que des moyens de butée sont prévus pour assurer un arrêt en rotation des bras de support (34) des rouleaux de contrôle de face (29).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9713224 | 1997-10-22 | ||
FR9713224A FR2769859B1 (fr) | 1997-10-22 | 1997-10-22 | Machine de roulage pour piece annulaire a former |
PCT/FR1998/002241 WO1999020415A1 (fr) | 1997-10-22 | 1998-10-20 | Machine de roulage pour piece annulaire a former |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1024914A1 EP1024914A1 (fr) | 2000-08-09 |
EP1024914B1 true EP1024914B1 (fr) | 2002-05-02 |
Family
ID=9512507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98950159A Expired - Lifetime EP1024914B1 (fr) | 1997-10-22 | 1998-10-20 | Machine de roulage pour piece annulaire a former |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1024914B1 (fr) |
DE (1) | DE69805200T2 (fr) |
ES (1) | ES2173631T3 (fr) |
FR (1) | FR2769859B1 (fr) |
WO (1) | WO1999020415A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001121416A (ja) * | 1999-10-27 | 2001-05-08 | Minebea Co Ltd | 軸受の外輪のランド仕上加工法及び軸受 |
CN101829745B (zh) * | 2010-04-23 | 2012-01-11 | 武汉理工大学 | 双沟槽截面环件冷辗扩成形的方法 |
CN104416099A (zh) * | 2013-09-04 | 2015-03-18 | 张家港市华尔东环形锻件有限公司 | 一种碾环机用异形芯辊 |
CN108856608B (zh) * | 2018-06-05 | 2019-09-20 | 北京中科三维科技有限公司 | 高精度数控闭环辊轧成型系统 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3681962A (en) * | 1969-12-01 | 1972-08-08 | Rotary Profile Anstalt | Apparatus for rolling rings |
US4173134A (en) * | 1978-02-24 | 1979-11-06 | General Electric Company | Apparatus and method for guiding a ring structure during the manufacture thereof |
US4869088A (en) * | 1988-07-05 | 1989-09-26 | Kazuo Kadotani | Ring shaping apparatus |
DE4405373C2 (de) * | 1994-02-19 | 1997-12-04 | Bad Dueben Profilwalzmaschinen | Vorrichtung zum Rundwalzen von Ringen |
-
1997
- 1997-10-22 FR FR9713224A patent/FR2769859B1/fr not_active Expired - Fee Related
-
1998
- 1998-10-20 WO PCT/FR1998/002241 patent/WO1999020415A1/fr active IP Right Grant
- 1998-10-20 ES ES98950159T patent/ES2173631T3/es not_active Expired - Lifetime
- 1998-10-20 EP EP98950159A patent/EP1024914B1/fr not_active Expired - Lifetime
- 1998-10-20 DE DE69805200T patent/DE69805200T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2769859A1 (fr) | 1999-04-23 |
DE69805200D1 (de) | 2002-06-06 |
WO1999020415A1 (fr) | 1999-04-29 |
DE69805200T2 (de) | 2002-10-24 |
FR2769859B1 (fr) | 2000-01-28 |
ES2173631T3 (es) | 2002-10-16 |
EP1024914A1 (fr) | 2000-08-09 |
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