EP2046530B1 - Gehäuse für ein rollpolierwerkzeug mit verstellbarer breite - Google Patents

Gehäuse für ein rollpolierwerkzeug mit verstellbarer breite Download PDF

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Publication number
EP2046530B1
EP2046530B1 EP07823523A EP07823523A EP2046530B1 EP 2046530 B1 EP2046530 B1 EP 2046530B1 EP 07823523 A EP07823523 A EP 07823523A EP 07823523 A EP07823523 A EP 07823523A EP 2046530 B1 EP2046530 B1 EP 2046530B1
Authority
EP
European Patent Office
Prior art keywords
housing
parts
casing
spacer
crankshaft
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.)
Not-in-force
Application number
EP07823523A
Other languages
English (en)
French (fr)
Other versions
EP2046530A1 (de
Inventor
Lucia Garcia Aranda
Gilles Yvenat
Nicolas Massue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to PL07823523T priority Critical patent/PL2046530T3/pl
Publication of EP2046530A1 publication Critical patent/EP2046530A1/de
Application granted granted Critical
Publication of EP2046530B1 publication Critical patent/EP2046530B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
    • B24B39/04—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution
    • B24B39/045—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution the working tool being composed of a plurality of working rolls or balls

Definitions

  • the present invention generally relates to roller burnishing machines, in particular those used for the work hardening of the crankshafts of internal combustion engines.
  • crankshaft is a mechanical part intended to be constantly in motion when the engine is running, which is why it is dimensioned so as to be robust but also the lightest and least bulky possible.
  • crankshaft is one of the parts of the most mechanically stressed engine.
  • crankshaft is subjected to torsion and bending forces as well as significant vibrations.
  • it must withstand many cycles of engine operation.
  • crankshafts are made in one piece by forging or molding and then they undergo machining operations, including work hardening by rolling, intended to change the structure of the material that compose them to make them more resistant.
  • the burnishing operation consists in imposing a permanent deformation on the surface of the material to improve its resistance to fatigue.
  • crank pins and trunnions consists in reinforcing the connection grooves between the arms and the crankshaft bearing surfaces (called crank pins and trunnions).
  • Known rolling machines have two rollers spaced apart from each other, and generally also inclined relative to each other, which each roll in a groove of the crankshaft exerting on the latter a large mechanical force which leads the hardening of this area.
  • one of these roller burners has an action tool with a two-part housing.
  • the two parts of the case fit into each other and enclose internally a wheel guiding the rollers.
  • the spacing between these two parts is fixed.
  • the guide wheel has a width that depends on the width of the crankshaft bearing to be rolled. This geometry indeed determines the spacing between the two rollers.
  • a housing can correspond to only one type of guide wheel.
  • the housing of the roller burnishing tool then adapts to a particular width of crankshaft bearings.
  • the present invention provides a roller action tool housing for adjusting the relative position of the two rollers to adapt their spacing to the geometry of the bearing of the crankshaft to be rolled.
  • a rolling action tool housing which comprises two parts separated from each other by means of adjustable spacing means.
  • the adjustable spacing means allow, before rolling a series of identical crankshafts, to separate the desired length of the two parts of the housing, in order to move the two rollers away or closer together. one compared to the other. Consequently, once this length is adjusted to the geometry of the crankshaft reach, the two rollers can each roll simultaneously on two of the leaves of the crankshaft to harden them. It is then possible to use different series of crankshafts to use the same housing by proceeding, each time beforehand, to the adjustment of the spacing of the two parts of the housing as a function of the distance separating the leaves of the crankshafts from the crankshaft. concerned series.
  • the spacer means comprise a spacer on which the two parts of the housing rest.
  • the spacer is interchangeable, and the two parts of the housing are spaced apart by a given distance which is a function of the width of the spacer.
  • a recess for receiving said spacer is formed on each of the two parts of the housing.
  • the two parts of the housing being coaxial with each other, the two rollers, each integral with one of the two parts of the housing, are precisely aligned relative to each other, without being offset. .
  • said recesses are formed on the edge of the housing.
  • the spacer is easily accessible so that it can be quickly replaced by another spacer.
  • a pair of burnishing tools 1 which comprises an upper tool, commonly called action tool 100, and a lower tool, commonly called reaction tool 10.
  • This pair of rolling tools 1 is adapted to work hard a crankshaft 50 disposed between these two tools.
  • the crankshaft 50 comprises along its length a series of pairs of arms 51 extending orthogonally to its axis W. As shown in FIG. figure 2 the pairs of arms 51 make it possible to connect bearing surfaces 52, 53 to each other (called journals 53 and crank pins 52).
  • the journals 53 are cylindrical and have an axis coincident with the axis W of the crankshaft.
  • the crank pins 52 are cylindrical and have an axis parallel and offset from the axis W of the crankshaft 50.
  • each bearing 52, 53 has a cylindrical surface around an axis parallel to the axis W of the crankshaft.
  • the lateral faces facing the arms 51 connected to the corresponding crank pin 52 and trunnion 53 are planar and extend orthogonally to the axis W of the crankshaft 50.
  • the annular zones of connection between the cylindrical surface of the 52, 53 and the flat surfaces of the side faces of the arms 51 form grooves 54 to work hard.
  • the reaction tool 10 of the rolling machine 1 which is not strictly speaking the object of the present invention, is intended to support the crankshaft 50 to be machined. It includes conventionally a housing 11 of generally parallelepiped shape with four side walls, including two front walls of axis normal to the axis W, which border a rectangular bottom wall. It is open on the front face and its two end walls each have a deep notch 12, generally triangular in shape, which accommodates the corresponding span 52, 53 of the crankshaft 50.
  • said bearing surfaces 52, 53 of the crankshaft 50 are, when in the notch 12, more particularly held by two reaction wheels 13 carried by two shafts 14 which are housed inside the housing 11 and which extend between its two front walls.
  • the reaction wheels 13 are pivotally mounted on the shafts 14 by means of needle bearings 15.
  • the action tool 100 comprises a parallelepipedal housing 101 separated longitudinally into two parts 110, 120 which are spaced apart from each other. These two parts 110, 120 each have a front wall 111, 121 which is disposed orthogonal to the axis W of the crankshaft 50 and which is lined with returns 112, 122 extending orthogonally to said front wall.
  • the two end walls 111, 121 are positioned facing each other so that their respective returns 112, 122 face each other and together form the edge of the housing 101 of the action tool 100.
  • each portion 110, 120 of the housing 101 is interrupted on a central portion of its length so that the edge of the housing 101 has an opening 106 disposed above the bearing 52, 53 of the crankshaft 50 to be rolled.
  • the housing 101 is more particularly positioned relative to the crankshaft 50 so that its lower returns extend in length orthogonal to the axis W of the crankshaft.
  • the end walls 111, 121 of the two parts 110, 120 of the housing 101 each have a circular opening 113, 123 central in which is slipped an axis 180.
  • a needle bushing 105 is mounted on the axis 180 in the housing 101.
  • each return 112, 122 has in recess a recess extending to the free edge of said return. Put together end to end, these recesses form around each part 110, 120 of the housing 101 a recess 115, 125. These two recesses 115, 125 are arranged opposite one another and form a common recess 102, rectangular section, along the edge of the housing 101.
  • the recesses extend on the inner face of each return, so that the common recess is disposed within the housing.
  • the two parts 110, 120 of the housing 101 are kept at a distance from each other by means of adjustable spacing means 130.
  • These spacing means here consist of a spacer 130 in U against which bear the two parts 110, 120 of the housing 101.
  • this spacer 130 is adapted to fit into the common recess 102, on three of its sides (the upper side and the two lateral sides).
  • Its width is designed to separate the two parts 110, 120 of the housing 101 by a determined distance d.
  • the spacer 130 is interchangeable.
  • the two parts of the housing can be moved apart by the desired distance. It is also understood that depending on the width of the spacer 130, the length of the axis 180 varies. The coaxiality of each of the two parts 110, 120 of the housing 101 is achieved by means of the spacer 130.
  • the free edges of the returns 112 of the first part 110 of the housing 101 can bear pads 116 which are adapted to engage in corresponding bores made in the spacer 130 and in the returns 122 of the second portion 120 of the housing 101 (see figure 1 ).
  • the action tool 100 further comprises means for fixing the two parts of the housing 101 between them and the spacer 130 in the common recess 102.
  • These fixing means comprise fixing screws 103 whose heads bear against the front wall 111 of the first part 110 of the housing, at different points distributed around its periphery, and whose threaded bodies are engaged in coaxial bores 117, 127 , 137 made in the returns 112, 122 of the two parts of the housing 101 and in the spacer 130.
  • the bores 127 of the returns 122 of the second portion 120 of the housing 101 are threaded so as to cooperate with the threaded bodies of these screws 103 (see figures 1 and 2 ).
  • the housing 101 of the action tool 100 having an inner housing 104 in which are mounted the work hardening means of the crankshaft 50, the end walls 111, 121 of the housing 101 are each pierced by three orifices 118 of arcuate oblong shapes. which extend around the corresponding circular opening 113, 123 of said wall and which are provided to allow the passage of lubricant in said inner housing 104 of the housing 101.
  • the shaft 180 forms a shaft on which is engaged a cylindrical rolling wheel 140.
  • This roller wheel 140 is pivotally connected to the axis 180 by means of the needle bearing 105 interposed therebetween.
  • the thickness of the roller wheel 140 and the width of the needle bearing 105 are intended to be less than the distance separating the inner faces of the two end walls 111, 121 of the housing 101 (this distance is of course a function of the width of the the spacer 130).
  • the roller wheel 140 can thus freely rotate around the ring 114, while being maintained in translation on this ring by the inner faces of the end walls of the two parts of the housing 101. It is then understood that the change of the roller wheel 140 also forced to change the spacer 130, the axis 180 and the corresponding needle bearing 105.
  • the roller wheel 140 has, at mid-height of its outer cylindrical face, a central rib 141 of rectangular section which extends over its entire periphery.
  • the lateral faces of this central rib 141 are connected to the outer cylindrical face of the roller wheel 140 by rounded leaves 142.
  • the action tool 100 further comprises two rollers 150 which are each arranged on one of the parts 110, 120 of the housing 101 and which are held by roller cages 161, 170 ad hoc well known to the man of the job.
  • Each roller 150 has a disc shape of small thickness.
  • Each roller 150 is disposed below the opening 106, so as to be in contact, on one side, with one of the rounded leaves 142 of the roller wheel 140, and, on the other, with one of the grooves 54 of the crankshaft 50.
  • the rollers can thus exert a significant burnishing force on the grooves 54 of the crankshaft 50 to work harden.
  • Each roller cage 161, 170 comprises attachment means 170 to a portion 110, 120 of the roller housing and housing means 161 for the roller 150.
  • These housing means in particular allow the roller 150 to be held in position while the pair of rolling tools 1 is at rest and let it rotate to roll on the grooves of the crankshaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Surgical Instruments (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (9)

  1. Gehäuse (101) für Werkzeug (100) zum Ausführen eines Presspolierens, dadurch gekennzeichnet, dass es zwei Teile (110, 120) aufweist, die voneinander mit Hilfe einstellbarer Beabstandungsmittel (130) getrennt sind.
  2. Gehäuse (101) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Beabstandungsmittel einen Abstandshalter (130) aufweisen, an dem sich die beiden Teile (110, 120) des Gehäuses (101) abstützen.
  3. Gehäuse (101) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Abstandshalter (130) austauschbar ist und die beiden Teile (110, 120) des Gehäuses (101) um eine gegebene Strecke (d), die von der Breite des Abstandshalters (130) abhängt, beabstandet sind.
  4. Gehäuse (101) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass als Mittel zum Zentrieren der beiden Teile (110, 120) des Gehäuses (101) relativ zueinander in jedem der beiden Teile (110, 120) eine Eintiefung (115, 125) verwirklicht ist, die dazu vorgesehen ist, den Abstandshalter (130) aufzunehmen.
  5. Gehäuse (101) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Eintiefungen (115,125) an der Stirnfläche des Gehäuses ausgebildet sind.
  6. Gehäuse (101) nach Anspruch 4, dadurch gekennzeichnet, dass dann, wenn jeder Teil (110, 120) des Gehäuses (101) eine innere Fläche aufweist, die mit der inneren Fläche des anderen Teils (110, 120) des Gehäuses (101) einen inneren Aufnahmesitz (104) begrenzt, die Eintiefungen an den inneren Flächen ausgebildet sind.
  7. Gehäuse (101) nach einem der drei vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Zentriermittel Erhebungen (116), die von einem der beiden Teile (110) und des Gehäuses (101) vorstehen, und Bohrungen, die im anderen der beiden Teile (120) des Gehäuses (101) verwirklicht sind und dazu ausgelegt sind, die Erhebungen (116) aufzunehmen, enthalten.
  8. Gehäuse (101) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gehäuse (101) Mittel (103) zum Befestigen der beiden Teile (110, 120) des Gehäuses (101) an den Beabstandungsmitteln (130) aufweist.
  9. Gehäuse (101) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Befestigungsmittel Befestigungsschrauben (103) aufweisen, deren Köpfe sich an einem der beiden Teile (110) des Gehäuses (101) abstützen und deren Körper durch Bohrungen (137) hindurch mit den Beabstandungsmitteln (130) in Eingriff stehen und in Gewindebohrungen (127) des anderen der beiden Teile (120) des Gehäuses (101) geschraubt sind.
EP07823523A 2006-07-31 2007-06-27 Gehäuse für ein rollpolierwerkzeug mit verstellbarer breite Not-in-force EP2046530B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07823523T PL2046530T3 (pl) 2006-07-31 2007-06-27 Obudowa narzędzia do rolkowania o regulowanej szerokości

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0606989A FR2904250B1 (fr) 2006-07-31 2006-07-31 Boitier d'outil de galetage a largeur reglable
PCT/FR2007/051539 WO2008017767A1 (fr) 2006-07-31 2007-06-27 Boitier d'outil de galetage a largeur reglable

Publications (2)

Publication Number Publication Date
EP2046530A1 EP2046530A1 (de) 2009-04-15
EP2046530B1 true EP2046530B1 (de) 2010-01-27

Family

ID=37876994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07823523A Not-in-force EP2046530B1 (de) 2006-07-31 2007-06-27 Gehäuse für ein rollpolierwerkzeug mit verstellbarer breite

Country Status (7)

Country Link
EP (1) EP2046530B1 (de)
AT (1) ATE456425T1 (de)
DE (1) DE602007004621D1 (de)
ES (1) ES2337845T3 (de)
FR (1) FR2904250B1 (de)
PL (1) PL2046530T3 (de)
WO (1) WO2008017767A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9469010B2 (en) 2013-03-14 2016-10-18 Honda Motor Co., Ltd. Burnishing unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142060A (ja) * 1983-01-25 1984-08-15 Honda Motor Co Ltd バニシング加工装置
DE102004010468B3 (de) * 2004-03-01 2005-08-11 Hegenscheidt-Mfd Gmbh & Co. Kg Geteilter Festwalzrollenkopf

Also Published As

Publication number Publication date
DE602007004621D1 (de) 2010-03-18
ES2337845T3 (es) 2010-04-29
FR2904250B1 (fr) 2008-09-12
FR2904250A1 (fr) 2008-02-01
EP2046530A1 (de) 2009-04-15
PL2046530T3 (pl) 2010-06-30
ATE456425T1 (de) 2010-02-15
WO2008017767A1 (fr) 2008-02-14

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