EP2046530A1 - Boitier d'outil de galetage a largeur reglable - Google Patents
Boitier d'outil de galetage a largeur reglableInfo
- Publication number
- EP2046530A1 EP2046530A1 EP07823523A EP07823523A EP2046530A1 EP 2046530 A1 EP2046530 A1 EP 2046530A1 EP 07823523 A EP07823523 A EP 07823523A EP 07823523 A EP07823523 A EP 07823523A EP 2046530 A1 EP2046530 A1 EP 2046530A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- parts
- spacer
- crankshaft
- roller
- 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.)
- Granted
Links
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 relates generally to roller burnishing machines, in particular those used for cold-working crankshafts of internal combustion engines.
- It relates more particularly to a rolling machine action tool housing.
- crankshaft is a mechanical part intended to be constantly moving 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.
- document US 2005/0188735 discloses one of these roller burnishing machines which comprises an action tool provided with a two-part casing.
- 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 given distance which is a function of the width of the spacer.
- 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.
- Other advantageous and non-limiting features of the rolling machine according to the invention are the following:
- Each part of the housing having an inner face which defines, with the inner face of the other part of the housing, an inner housing accommodating a roller wheel, the recesses are formed on said inner faces;
- the centering means comprise studs projecting from one of the two parts of the housing, and bores which are formed in the other of the two parts of the housing and which are adapted to receive said pads;
- the housing comprises means for fixing the two parts of the housing with the spacing means;
- the fastening means comprise fastening screws whose heads bear against one of the two parts of the case, and whose bodies are engaged through bores of the spacer means and are screwed into threaded bores of the other two parts of the case.
- FIG. 1 shows a pair of rolling tools 1 which comprises an upper tool, commonly called an action tool 100, and a lower tool, commonly called a reaction tool 10.
- This pair of rolling tools 1 is adapted to work 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. 2, the pairs of arms 51 make it possible to connect bearing surfaces 52, 53 to each other (called journals 53 and crankpins 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 surface 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 crankpin 52 and to the journal 53 are plane 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 roller milling machine 1 which is not properly the subject of the present invention, is intended to support the crankshaft 50 to be machined.
- 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 they are in the notch 12, more particularly held by two reaction wheels 13 carried by two pins 14 which are housed inside. of the housing 11 and which extend between its two end 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 which extends 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. Alternatively, one could provide another geometry for the section of the common recess 102, such as a T-section section recess.
- the recesses extend on the inner face of each return, so that the common recess is disposed within the housing.
- spacing means 130 adjustable 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 roller wheel 140 cylindrical.
- 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 Pentretoise 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 maintained by roller cages 161, 170 ad hoc well known to those skilled in the art.
- 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)
- Portable Nailing Machines And Staplers (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
Claims
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 true EP2046530A1 (fr) | 2009-04-15 |
| EP2046530B1 EP2046530B1 (fr) | 2010-01-27 |
Family
ID=37876994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07823523A Not-in-force EP2046530B1 (fr) | 2006-07-31 | 2007-06-27 | Boitier d'outil de galetage a largeur reglable |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2046530B1 (fr) |
| AT (1) | ATE456425T1 (fr) |
| DE (1) | DE602007004621D1 (fr) |
| ES (1) | ES2337845T3 (fr) |
| FR (1) | FR2904250B1 (fr) |
| PL (1) | PL2046530T3 (fr) |
| WO (1) | WO2008017767A1 (fr) |
Cited By (1)
| 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)
| 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 |
-
2006
- 2006-07-31 FR FR0606989A patent/FR2904250B1/fr not_active Expired - Fee Related
-
2007
- 2007-06-27 AT AT07823523T patent/ATE456425T1/de not_active IP Right Cessation
- 2007-06-27 EP EP07823523A patent/EP2046530B1/fr not_active Not-in-force
- 2007-06-27 PL PL07823523T patent/PL2046530T3/pl unknown
- 2007-06-27 WO PCT/FR2007/051539 patent/WO2008017767A1/fr not_active Ceased
- 2007-06-27 DE DE602007004621T patent/DE602007004621D1/de active Active
- 2007-06-27 ES ES07823523T patent/ES2337845T3/es active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008017767A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9469010B2 (en) | 2013-03-14 | 2016-10-18 | Honda Motor Co., Ltd. | Burnishing unit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008017767A1 (fr) | 2008-02-14 |
| PL2046530T3 (pl) | 2010-06-30 |
| FR2904250A1 (fr) | 2008-02-01 |
| ATE456425T1 (de) | 2010-02-15 |
| EP2046530B1 (fr) | 2010-01-27 |
| FR2904250B1 (fr) | 2008-09-12 |
| DE602007004621D1 (de) | 2010-03-18 |
| ES2337845T3 (es) | 2010-04-29 |
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