FR2527120A1 - PRE-DRAFT DEVICE AND METHOD FOR CALIBRATING DIAMETERS BY ROLLING, INCLUDING MEANS FOR DRAFTING SURFACES - Google Patents

Abstract

THE TOOL INTENDED TO PREPARE A CYLINDRICAL WORKPIECE WITH THE CALIBRATION OF ITS DIAMETER BY ROLLING IN GIVEN TOLERANCES INCLUDES A BODY PRESENTING AN ATTACK END 20 AND A LEAKING END 32 AND INCLUDING A WORKING FACE OF 22, 24 MUNIE INTENDED TO START A LIMITED AND CONTROLLED ROUGHNESS ON THE SURFACE OF THE WORKPIECE. THE TOOL PROMOTES THE OBTAINING AFTER CALIBRATION BY ROLLING OF A DIAMETER OF THE WORKPIECE SITUATED IN TIGHTER TOLERANCES.

Description

The present invention relates to tools for

  cold forming, and in particular tools,

  sitives and processes used in rolling and

  serration of cylindrical elements.

  Finishing of cylindrical metallic elements

  so that they have an equal surface area

  read or a desired finish quality can be achieved by many different types of operations and machining machines, for example lathes, sharpeners, grinders, sanders, sparking machines

  and electrochemical polishing machines

  held is determined by speed, advance and depth

  cutter for a particular machine making

  the operation Generally, a rectilinear part is rec-

  tified after the turning operation if a very

  smooth is desired, i.e. finishing in the range

  of 0.10-0.60 microns Sanding machines, po-

  smoothing or buffing can also achieve

  similar nissages, but these are generally located

  in the 0.30-0.60 micron range.

  Cold working of cylindrical elements

  that to obtain a desired shape or dimension is very old in the art and has been carried out with a variety of machines and processes, and the final finish of the surface of a rolled or forged part was of a smoothness given during the completion of the particular process.

  The oldest prior art of lami-

  metal swimming dates from the end of the 19th century

  yielded to laminate metals are for example described in patent U S N O 625 575, granted to Loughrin, in which

  depicted is a device for laminating a sec-

  However, the object of this forming process was to laminate the part to a particular shape or appearance rather than a shape, a

  finished and particular dimensions

  laughers intended for laminating trees or the like are de-

  described in US Patent No. 1,550,024 to Clark.

  The object of this particular invention was to straighten out

  use pins, trees, and the like.

  Likewise the finish and dimension of a particular surface were not the main objects of this patent, but a browning of the surface took place inherently to the process Many patents exist in the field of metal rolling, which include the manufacture of rivets, rivet rods, studs, rolling bearings

  lo rollers, small cylindrical parts or the like.

  These include US Pat. Nos. 1,446,447.2,825,251

and 3,044,332.

  The process of calibrating a surface by

  mining moves rather than eliminating small irregularities

  surface areas produced by cutting tools, and can be applied to both interior and exterior surfaces US Patent No. 2,480,043 granted to Paulus et al describes a method for journalling a shaft and a bearing which uses tools to

  forge the bearing on the shaft by removing the jamming.

  of the bearing on the shaft by a rolling operation in

  be a pair of opposite dies The applied radial pressure causes the material of the bearing to creep and

  increases its circumferential length on the shaft En-

  Another more recent patent, US Pat. No. 4,208,773, granted to Killop, describes a device for browning the teeth of a

  gear using oppo- mastering racks

  Here the shape of the gear teeth is changed

  by bending the tooth surface axially by browning

wise.

  The main problem when rolling teeth

  grooved or gear teeth on a cylindrical surface

  that rectilinear resides in the fact that the diameter of the surface intended to be rolled is extremely critical, and must be maintained within tight tolerances The rolling diameter of the workpiece is chosen so that the volume of the material which must be moved from the periphery below the

  surface is forced into a tooth located above the pe-

  initial response of the work piece This is for-

  what the initial diameter of the part intended to be the

  mined is approximately equal to the original diameter of

  the tooth to be formed In ordinary processes fa-

  brication of an axis or a tree intended to present a

  groove or a gear tooth after rolling, the

  pes of the manufacturing preceding the rolling of the form

  teeth are very important The part is large

  usually first machined on a lathe, so as to have a predetermined diameter, then it is rectified,

  to keep its diameter within the tolerance limits

  these particulars so that, when a tooth is rolled on the shaft, it has a pitch diameter,

  a tooth shape, a head and a foot that are satis-

doing.

  An object of the present invention is to pre-laminate

  ner the cylindrical part using a pre-work tool

  with streaks in order to first outline the over-

  front side to calibrate the part by rolling to give it

  ner desired finish and dimensions.

  Another object of the present invention is to

  body a pre-work tool and a calibration tool by rolling on the same machine, so that the

  part can be roughed out and then calibrated by the tool

  liberation by rolling Another object of the present in-

  vention is to propose a pre-work tool comprising grooves, a rolling calibration tool intended to pre-calibrate the diameter and a forming tool intended to shape the groove or gear tooth on the same machine. tools described here can be used on machines such as those described in US Pat. Nos. 2,995,964 (Drader), 3,818,736 (Blue) and 3,982,415

(Rillop).

  An object of the present invention is to create tooling means intended to calibrate by rolling the

  periphery of a cylindrical workpiece, including

  a pre-work tool with a working surface

  vail provided with ridges intended to impart to the periphery of the workpiece a limited and controlled roughness of its surface, before calibration by rolling intended for

  provide a calibrated diameter by rolling located in to-

  tight lerances A characteristic pre-work tool presents a pattern of longitudinal, transverse ridges

  and / or another orientation of a shallow depth

  determined, so that the surface of the cylindrical part

  drique intended to be calibrated by rolling to take a predetermined dimension or pre-worked to give it a surface characteristic, a texture or a

  controlled depth and surface finish, predeter-

  mined and limited, which contributes to high preci

  sizing the diameter calibrated by rolling A calibration tool

  characteristic rolling lamination includes a body

  as a series of sections associated with it, the first sec-

  tion after the cutting edge of the tool comprising a pre-

  first part sloping towards the leading edge and a ridge or inclination extending transversely to the direction of movement of the tool to cause rolling of the metal in an axial or lateral direction A second part of the first section of the tool, in transition with the first part, will flatten outwards or compress the initial corner or crest that would normally appear on the finished part A second section of the tool, parallel

  at the base of the tool, performs, when used on a ma-

  china, final surface compression and finish

  of the part to the desired diameter and a finishing of the over-

  face, the third and last section of the tool allows

  both the clearance of the part between the tools without leaving

  tool trace The pre-work tool and the burnishing tool can either consist of separate tools,

  either be combined into a single piece tool

  The tils described above, together or even combined with a tooth shaping rack, make it possible to obtain surface finishes of tooth or bearing

good quality.

  Various other features of the invention

  moreover emerge from the detailed description which follows.

  An embodiment of the object of the invention is shown, by way of nonlimiting example, in

attached drawing.

  Fig 1 represents the workpiece and the lower and upper tools mounted on a machine,

in schematic form.

  Fig 2 is a top view (enlarged) of

  the tool showing the various sections of the tool.

  Fig 3 is a side elevation or pro-

  tool wire shown in fig 2.

  Figs 4 a and 4 b are projections of the

til in fig 3.

  Fig 5 shows the tool having, on its

work surface, streaks.

  Fig 6 shows a characteristic part

  with surfaces worked by the tool.

  Fig. 7 shows an embodiment showing the calibration tool by rolling in combination

  with a tooth shaping tool.

  Fig 8a is a reproduction of a strip graph showing the finish of a particular surface

of the room.

  Fig 8 b is the reproduction of a band graph concerning the same part in fig 8 a, after its

rolling calibration.

  Fig 9 a is the reproduction of a strip graph of a cylindrical surface before its calibration

by rolling.

  Fig 9 b is a reproduction of a band graph for the same part in Fig 9 a, after its

rolling calibration.

  The fig l Oa to l Oc are projections in the same plane as that of fig 4 b, but showing other

  embodiments of the cutting surface of the tool.

  Fig 11 is a side view of an embodiment showing the surface preparation tool by pre-calibration by rolling, the calibration tool by rolling and the tooth forming tool. Fig 12 is a top plan view of

  the overall tool shown in fig 11.

  Fig 13 is a front view of the tool re-

  presented in fig 11, highlighting the streaks of the

  io pre-work section of the tool.

  The device for calibrating by rolling the sur-

  cylindrical faces is schematically shown in fig 1 Tool 10 is the lower rolling calibration tool, which is mounted on a machine such as that

  described in US Pat. No. 2,995,964 The calibration tool

  brage by upper lamination 12 is identical to the calibration calibration by lower lamination 10, but is mounted on the upper carriage of said machine. The calibration tools = lamination by lamination 10 and 12 are described in more detail below, as well as in the co-pending application which has the title: "Device and method for calibrating diameters by rolling", the lessons of which are incorporated here

by reference.

  The part 50 is shown in place on the main

  china and is held between its centers to remain fixed on the machine The mounting flange 14 is intended for mounting the tool on the carriages of the machines Fig 2 and fig 3 are enlarged views of the tool itself and

  do not necessarily have the proportions shown

  tees, their exaggerated shape being shown here for clarity. The tool shown has a cutting surface separated into a number of sections starting with the leading end 20 The first section consists of surfaces 22 and 24 which intersect at an angle

  oblique with each other, along edge 23 of the first

  1st section, extending along the center line along

  gitudinal of the attack surface of the tool In addition, these surfaces slope downwards towards the attack end 20 and the base 38 of the tool. The surfaces 22 and 24 thus have a configuration and dimensions.

  such that they have a crest which allows the over-

  peripheral face of the part, when it comes into contact with the tool, to begin to undergo a displacement of

  metal radially and transversely to the direction of a-

  tool clearance (axially on the workpiece), in order to obtain the desired results This first section includes

  surfaces 22 and 24, which terminate at the end of the

  plate 20 and at line 29, passing through point 21 This first section can also be shaped so as to have a rounded crest 41 (fig l Oa) or another transverse convex shape between the sides 34, 36 of the tool, sloping down towards its sides, that is to say as shown in fig 10 c, a crest having a radius R combined with flats 24 'and 22' fig l Ob shows

  another embodiment having a cross section

  dirty in which the surfaces 24 ′ and 22 ′ slope downward towards the sides 36 and 34, from an initial ridge situated at the leading end 20 or from a

  petitm 6 flat located at the top of the first section Evi-

  other forms of crest can be adopted for this first section and still provide the desired results. The crest form which has been found to provide the

  best results is that shown in fig 3 and 4 b.

  The second section consists of a surface 26 and the intersection of extensions of the surfaces 22 and 24, starting from the first section This second surface 26 also slopes down towards the attack edge and the base of the tool, but tilted at an angle

  lower than that of the first section The transi-

  tion to the third section 28 is defined by the edge 27 The second section is thus delimited by the edges 25, 27 and by the sides 34 and 36-and the line 29 passing through the point 21 The surface 28 is the third section of the tool and is flat and parallel to the base 38 of the tool,

  and the finish of its surface predominantly determines

  rante the final finish of the surface of the room to

  work Surface 30, the dimension of which is relatively

  vely short, is the fourth section of the tool and slopes down towards the trailing end 32 of the tool in order to provide sufficient clearance for the part from the interval between the tools, without leaving tool trace or otherwise deteriorate the calibrated surface by rolling when finished To give an idea of the proportions, the first section, between the leading edge and point 21, will be approximately 37.5% long the total length of the tool The second section, between the

  point 21 and line 27, will have a length still approxi-

  matively equal to 37.5% of the length of the tool The third section 28 will have a length approximately equal to 16.5% of the length of the tool The fourth section 30 will have a

  length of approximately 8.5% of the length of the tool The length

  the first section mentioned above is to be con-

  sider between the attack edge 20 and point 21 The se-

  as section 26 extends between point 21, intersection of lines 25 and edge 23 of the section, and the transmission edge 27 The third section extends from this edge 27 to edge 29, defining the surface 28 The critical surface or section 28, which is the parallel section, will have a length preferably equal to the circumference of the part intended to be rolled For example, -if the diameter of the

  workpiece is 2.5 cm, surface 28 will have a length

  length between 7.5 and 10 cm If the diameter of the part is 5 cm, the surface 28 will have a length between 15 and 17.5 cm It is obvious that the length of the surface 28 could be equal to only '' at half a circumference of the part, because both the upper tool and the tool

  lower work the part during its rolling.

  Experience has shown that some di-

  tool dimensions gave better results for certain diameters calibrated by rolling Dimension A shown in fig 3 at the start of the second section can be between 25 and 75 thousandths of a mm Dimension B, shown in the same figure, a was chosen between 0.125 and 0.25 mm, depending on the diameter of the workpiece The inclination providing dimension C, or the gradient of surfaces 22 and 24, appearing better in fig 4 b, can be modified to provide a dimension C between 50 and 100 thousandths of a mm to give the best results Dimension C 'from fig l Oa to l Oc

  can take the same values Dimension D represents

  tee in fig 3 at the trailing end 32 will be about thousandths of a mm for a given tool and does not depend on the diameter.

  Fig 5 shows an embodiment of the in-

  vention This embodiment involves machining a series of shallow grooves in the surfaces of

  work 22 and 24 of tools 10 and 12 Longitudi streaks

  nales 60 or transverse 64 can be individually arranged on the surface or combined to form a pattern

  crossed 62 A similar pattern, with a shift of 45 from-

  on the surface of the tool, shows ridges 66 and 70 which can also be arranged individually or in

  combination, to form a cross diagram 68, such as re-

  presented A preferred streak pattern, i.e.

  longitudinal ridges 58, is shown in fig 12 my-

  trant the tool 56 The object of these striations is to pre-rough the surface of the part to obtain a characteristic, a texture or a depth and a finish of the surface predetermined, to allow the tool of calibration by rolling of give a characteristic and a finish of the surface, as well as a value of the desired diameter The ridges provide on the surface of the part a roughness or set of very minimal, controlled and limited notches, which allow said part to be correctly calibrated

  by rolling A shallow and rough surface roughness

  controlled in the range of 17 to 22 microns, or an equivalent roughness, has proved satisfactory, depending on the radius of the end of the cutting tool and the feed per revolution,

  to achieve the objects of the invention.

  Fig 6 shows a typical part with the groove 52 which has been laminated by the device shown in Fig 7, and the periphery 54 which has been calibrated by rolling so as to have a geometry, a diameter value and a surface finish desired to play

  the role of plain bearing surface.

  In fig 7, the association of a calibration tool

  ge by roughing rolling 44 (see fig 5) and a tooth shaping tool 46 is shown mounted on the same base plate by means of screws 42 The key 48 acts as a stop for the roughing lamination calibration tool 44 The part 50 is shown in position on the tool 44, the tooth shaping tool 46 state al hb behind the lamination calibration tool Tools These shaping tooth as described in US Patent No. 3,857,273 granted to Miller, are suitable

  44 and 46 of Fig 7 are shown separate; however.

  Tools could easily be made from one piece.

  FIGS. 11 and 12 represent yet another embodiment comprising a 44 s burnishing tool,

  a tooth shaping tool 46 and a pre-

  work 56 mounted on a common base 40 ', on which

  positioning keys 48 are also mounted.

  In the present case, the tool 56 has a cross section of

  slightly inclined plate leading to a flat horizontal working surface parallel to the base 40 ′, provided with longitudinal ridges 58 as described above, intended to pre-work or pre-rough the surface before the calibration step by rolling, ending with a section of

  slightly sloping clearance The depth and the gap

  These streaks can vary according to the piece, in order to obtain a dimension and a rough surface profile required so that the final diameter is located within a range of predetermined tolerances for the operation.

  subsequent tooth shaping.

  The present invention thus creates a method and a device for deliberately pre-roughing the periphery of a cylindrical workpiece in a limited and controlled manner before calibration by rolling to dimension.

  and finishing The pre-work tool includes an over-

  ribbed working face intended to impart the required roughness to the surface of the workpiece. The ribbed roughing surface can be incorporated as the first working surface of a rolling calibration tool,

  or can be provided on a separate tool body.

  Obviously, other modifications can be made to the surfaces of the pre-work tool and

  calibration by rolling with the calibration tool by lami-

  swimming and / or tooth shaping rack, or manufacturing as a single piece organ Note that the pre-work tool can be used alone or with

  other tools to prepare the surface of a piece of-

  tine to be calibrated by rolling in a rack type machine Although various embodiments

  of the invention have been described and illustrated, the invention

  tion is not limited to construction or description

  and details provided, but various variations of the agent

  cement pieces will appear without leaving the frame and

the spirit of the invention.

Claims (27)

RESELL ICAT IONS   1 Tool intended to prepare a part for   work cylindrical to calibrate its diameter, by lami-   swimming, within given tolerances, characterized in that it comprises a body (10) having a leading end (20) and a trailing end (32) and comprising a working face (22, 24) provided with ridges (60 to 70) intended to impart a limited and controlled roughness to the surface of the part to be   work, which in turn favors obtaining after cali-   brage by rolling a diameter of the workpiece located within tighter tolerances.   2 Tool according to claim 1, characterized in that the ridges (60) of the working face (22, 24) extend longitudinally relative to the body (10) of the tool.   3 Tool according to claim 2, characterized in that the ridges extend longitudinally between   the leading and trailing ends.   4 Perimeter rolling calibration tool   center of a cylindrical workpiece, characterized by the fact that it comprises a body (10) comprising a base (38) and sides (34, 36) as well as a leading end (20) and a trailing end (32) and being provided with a   work comprising a front part (22, 24, 26) extending   backward from said leading end and pre-   sensing streaks (60 to 70) and a rear portion (30) extending   towards the front from said trailing end (32), and a central part (28) located between said front part (22, 24, 26) and said rear part (30), said central part (28) of said work surface being substantially parallel to said base (38), to form by pressing a smooth finish on the workpiece, said front part (22, 24, 26) being inclined towards said leading end (20) and   said rear end (30) being inclined towards said end leakage half (32).   Tool for forming by pressing a smooth finish on a cylindrical workpiece, characterized in that it comprises a body (10) having a leading end (20) and a trailing end (32), and being provided with '' a work surface comprising a first (22, 24) and a second (26) surface extending rearward from said leading end (20) and having grooves (60 to 70) on said first section, a fourth surface (30) extending forwardly from said trailing end (32) and a third surface (28) connecting said second surface (26) and said fourth surface (30), said first ( 22, 24) and second (26) surfaces being inclined towards said leading end (20) and said fourth surface   (30) being inclined towards said trailing end (32).   6 Tool for calibrating by rolling the periphery of a cylindrical workpiece, characterized in that it comprises a body (10) having a base (38), a leading end (20) and an end of leak (32), and provided with several working surfaces, at least one surface (22, 24, 26) extending rearward from said leading end (20), said surface extending towards the rear sloping towards said leading end (20) and having ridges (60 to 70), and at least one   surface (30) extending forward from said end   leakage unit (32), said forward extending surface (30) sloping toward said trailing end (32), and at least one surface (28) extending between said forwardly extending surface 'rear (22, 24, 26) and said surface (30) extending forward. 7 Tool according to claim 4, characterized in that said front part (22, 24) of the surface   is sloping towards each of the sides (34, 36) of said body (10).   8 Tool according to claim 4, characterized in that said front part (22 ', 24') of the surface is curved transversely between said sides (34, 36) of said body (10).   9 Tool according to claim 4, characterized in that the longitudinal central part (26) of the front part of said surface (22, 24, 26) is higher than the longitudinal edges of said front part (22, 24) of the surface. Tool according to claim 4, characterized in that a length of said front part (22, 24, 26) of the rearwardly extending surface has a slope   different towards said leading end (20).   11 Tool according to one of claims 7 to 9,   characterized by the fact that a length of said front part (22, 24, 26) of the surface has a different gradient   toward said leading end (20).   12 Tool according to claim 5, ca-act 5 risé Be: i the fact that said first surface (22, 24) is in rent vc   each of the sides (34, 36) of the body (10).   13 Tool according to claim 5, characterized   by the fact that said first surface (22 ', 24') is tra-t-   vertically curved between said c Utés (34, 36) of said ccr P ({} J 14 Tool according to claim 5, characterized in that the longitudinal center (23) of said first surface (22, 24) is higher than the longitudinal edges   of said front part (22, 24, 26) of the surface.   Tool according to claim 5, characterized in that a length of said first surface (22, 24, 26) extending towards the rear has a slope   different towards said leading end (20).   16 Tool according to one of claims 12 to 14,   characterized in that a length of said first surface (22, 24, 26) has a different slope towards said leading end (20).   17 Tool according to claim 6, characterized in that said surface (22, 24) extending backwards   is sloping towards each of the sides (34, 36) of said body (10).   18 Tool according to claim 6, characterized in that said surface (22 ', 24') extending backwards   is curved transversely between said sides (34,36) of said body (1 ". -2527120   19 Tool according to claim 6, characterized in that the longitudinal center (23) of said surface (22, 24) extending backwards is higher than the   longitudinal edges of said surface extending towards the rear   re. -Tool according to claim 6, characterized by   the fact that a length of said surface (22, 24, 26) extends   backwards presents a different slope towards said leading end (20).   21 Tool according to one of claims 17 to 19,   characterized in that a length of said surface (22,   24, 26) extending backwards has a different gradient   annuity towards said leading end (20).   22 Machining device for calibrating by rolling   a cylindrical workpiece so that it presents   te a diameter located within tight tolerances, characterized by the fact that it comprises a pre-working tool comprising a working surface (56) provided with shallow ridges (58) intended to impart to the surface of the workpiece to work   (50) a controlled and limited roughness, and a cali   lamination by rolling (44) intended to work the blank   to give it a diameter within tight tolerances.   23 Machining device according to claim 22, characterized in that the rolling calibration tool (44) is configured so as to promote an initial axial creep of material on the workpiece, followed by creep   radial by compression, in order to obtain the desired diameter.   24 Machining device according to claim 23, characterized in that the working surface of the tool   pre-work (56) has longitudinal ridges (58).   Machining device for calibrating by rolling   a cylindrical workpiece so that it pre-   feels a diameter within tight tolerances, characteristic   laughed at by the fact that it comprises, in combination, a pre-working tool (56) and a rolling calibration tool (44), said pre-working tool (44) comprising a working surface having shallow ridges ( -58), said rolling calibration tool (44) comprising a body (10) having a base (38) and sides (34, 36), a leading end (20) and a trailing end (32) and being provided with a work surface comprising a front part (22, 24, 26) extending rearwards from said end   attack (20) and a rear portion (30) extending towards-   the front from said trailing end (32), and a part   central tie (28) located between said front (22, 24, 26) and rear (30) parts, said central part (28) of said work surface being substantially parallel to said base (38), said front part (22, 24, 26) being inclined towards said leading end (20), said rear part (30)   being inclined towards said trailing end (32).   26 Machining device according to claim 25,   characterized in that the pre-work tool (56) pre-   feels longitudinal streaks on its work surface (58).   27 Machining device for forming a tooth on a cylindrical workpiece, comprising, in combination, a pre-work tool (56) having a work surface provided with shallow ridges (58) intended to impart to the work surface the workpiece with a limited and controlled roughness, a rolling calibration tool (44) intended to work the workpiece roughly shaped to give it a diameter located within tight tolerances suitable for the formation of a tooth of given pitch diameter, and a tooth shaping tool (46) for cold rolling the   tooth on the workpiece calibrated by rolling.   28 Machining device to form a tooth   peening on a cylindrical surface using a rolling calibration tool (44) in combination with a tooth shaping rack and means (56) for pre 1   work the surface of said cylindrical surface, characteristic   due to the fact that said pre-work means (56) comprises   have a ribbed work surface extending rearward from a leading end, said rolling calibration tool (44) comprising a body (10) having a base (38), a leading end (20) and a trailing end (32), and being provided with several working surfaces comprising at least one surface (22, 24, 26) extending backwards from said leading end (20) , said rearwardly extending surface being inclined towards said leading end (20), and at least one surface (30) extending forwardly from said trailing end (32), said surface forwardly extending (30) being inclined towards said trailing end (32), and at least one surface (28) extending between said rearwardly extending surface (22,   24, 26) and said forwardly extending surface (30).   29 Method for calibrating a cylindrical workpiece with a diameter situated within given tolerances, characterized in that it comprises the operations consisting in: (a) roughing the surface of the workpiece in a controlled and limited manner, to favor calibration by rolling to a diameter located within tight tolerances, and (b) cold rolling the workpiece which has been outlined between a pair of calibration tools by rolling (10, 12), in order to calibrate the diameter of the workpiece work within the given tolerances, said initial draft, limited and controlled, thus facilitating the calibration of the diameter of the part   to work within said tolerances.   30 Method according to claim 29, characterized   by the fact that the roughing of the workpiece is ef-   made by rolling a serrated tool (56) against the workpiece to work.   31 Method according to claim 29, characterized in that the calibration tools by rolling are shaped (10, 12, 44) so as to promote an initial flow of material, axial and radial, on the workpiece that has been roughed out.   followed by a creep by compression intended to calibrate the diameter metre.   32 Method of manufacturing a transmission member   Toothed cylindrical power, characterized in that it comprises the stages consisting in: 2 527120   % a) outline the peripheral surface of a cylindrical organ in a limited and controlled manner, to favor   calibration by rolling a diameter located within tolerances   tight rancid, (b) laminate to fr Zo-id the Abauché organ between a pair   Lamination calibration tools, in order to calibrate the diameter   be within tolerances imposed by the formation of a tooth of critical diameter adorned, and   (ci _forrir said derd'ans organ pre-caliber.   3Proc-dt tcelon leẻ, eindîcati-on 32, car-ictêrilét zar the fact that àled-U ibà-icîîagde il'src "l ane est feuépa; r   the rolling of a utility against it.   34 Process 6 according to reT: nd-ication 32, oara ie faajc qu-z the tools for wiring by lamin, so; at V wcorformés so as fa_î-se_ 'a f ua re of mnatiê_r_, t idia L , u C ie -e /, iuivi -'-, N f luagr ccmi-s Y -é v; endition 32, to pa: f fai t q ue lloDrgar,: z laminated to ci-2 2 fl a pair of frmalr n;, 'y former' r e, r