EP0326606A1 - Vilebrequin compose et son procede de fabrication - Google Patents

Vilebrequin compose et son procede de fabrication

Info

Publication number
EP0326606A1
EP0326606A1 EP88907120A EP88907120A EP0326606A1 EP 0326606 A1 EP0326606 A1 EP 0326606A1 EP 88907120 A EP88907120 A EP 88907120A EP 88907120 A EP88907120 A EP 88907120A EP 0326606 A1 EP0326606 A1 EP 0326606A1
Authority
EP
European Patent Office
Prior art keywords
crankshaft
pin
parts
solder
connecting surfaces
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.)
Withdrawn
Application number
EP88907120A
Other languages
German (de)
English (en)
Inventor
Michael Schenk
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19873728142 external-priority patent/DE3728142A1/de
Application filed by Individual filed Critical Individual
Publication of EP0326606A1 publication Critical patent/EP0326606A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/06—Crankshafts
    • F16C3/10—Crankshafts assembled of several parts, e.g. by welding by crimping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/005—Camshafts

Definitions

  • the invention relates to a composite crankshaft, which has the features of the preamble of claim 1, and a method for producing such a crankshaft.
  • the invention has for its object to provide a composite crankshaft that allows to take full advantage of the advantages that result from the division. This object is achieved by a crankshaft with the features of claim 1.
  • connection between the individual parts of the crankshaft allows a strength to be achieved in the area of the connection point, which is not reduced compared to the strength of the base material.
  • the connection points can therefore be provided wherever it is advantageous for manufacturing reasons and / or for reasons of the desired properties of the crankshaft.
  • the solution according to the invention also makes it possible to use different materials for the individual parts.
  • Another essential advantage of the solution according to the invention is that the manufacturing cost of a crankshaft does not depend significantly on the number of connection points, because all connections can be made in a single operation, that is to say simultaneously. Nevertheless, if necessary, it is of course possible to produce only a part of the soldered connections in a first operation and to produce the remaining soldered connections in at least one further operation with a solder having a lower melting temperature.
  • crankshaft according to the invention therefore, it is not only possible to achieve an optimum between dimensional stability and weight, given the freely selectable position of the dividing points within wide limits, it offers considerably greater possibilities for the optimal design of the cheeks and pins than is the case when the dividing points must lie in the center of the pin. Also with regard to the manufacturing costs, the advantages resulting from the manufacture of the individual parts are not negated by their connection.
  • the crank pins can be inserted into the eye of the associated connecting rod before the solder connections are made, as a result of which no split connecting rod eyes are required, which leads to a further reduction in mass.
  • a bearing bush made of a ceramic material, for example oxide ceramic between the pin and the bearing shell. Oil lubrication is then no longer necessary. In addition, the running noise of the machine is reduced.
  • the solder connections are preferably designed according to claim 2.
  • the highest strength of the soldered connection is obtained if the connection surfaces are designed in such a way that the gap which is initially present and which is required to hold the solder can decrease towards zero.
  • a cylindrical shape in particular a circular cylindrical shape or a flat shape that allows a butting against one another at least in a partial area, may also be suitable. Wherever there is an alternating bending stress, as is the case in particular with the pins of a crankshaft, a design of the connecting surfaces according to claims 4 and 5 is more advantageous.
  • a curvature is also to be understood as a kink in the course of the surface line.
  • connecting surfaces whose surface lines have a curved, in particular a wave-like or S-like, course, can be superior to the other shapes of the connecting surfaces.
  • the surface lines of the connecting surfaces can also strike the surface surfaces of the parts connected to one another at a right angle. However, an acute angle is preferably selected.
  • the metal line of the connecting surfaces can have both curved and conical and / or cylindrical sections.
  • the shapes of the connecting surfaces according to claims 4 to 6 are also advantageous because of the centering of the parts to be soldered to one another.
  • connection surfaces can also be designed for this purpose according to claim 7. A connection is thus obtained in the. kind of a. SchnappverschJLusses._ In order to be able to slide the parts behind one another, one can be cooled and / or heated. This provides a secure shrink connection.
  • Snap connections according to claims 7 and 8 can also be provided between two parts and at least one connecting ring or between the pin and a tube inserted therein. If a part of a pin is formed in one piece with the associated cheek, a design of the connection according to claim 9 is particularly advantageous, an additional pin part or more additional pin parts also being used for realizing a relatively large pin length or else for a connection of pin parts that cannot be soldered to one another directly because of the material from which they are made, but only with the interposition of another material, as well as for repair purposes and for ceramic bearing bushes that provide oil mist or air lubrication or complete lubrication Allowing lubrication to be dispensed with offers significant advantages.
  • a hollow design of the pins enables the use of pipes as an oil channel, the design of the hollow space of the crank pin as a dirt trap, the reduction of the hollow space, for example through the use of partitions or a wire mesh in order to limit the oil supply to the residual oil quantity. which is required for a start-up, or for example design the oil channel in such a way that its shape supports the oil pumping. If the crankshaft is constructed according to claim 11, there is a direct connection between the cavities of adjacent pins. Then only the latter need to be provided with oil channels.
  • crank pin If two or more connecting rods are mounted on a crank pin, this can be carried out without difficulty, owing to the division of the crank shaft, in such a way that it has axially offset sections.
  • the cheeks can also be, for example, finely stamped plates. Furthermore, at least the cheeks can be parts made of sheet metal, and in this case too, parts of the two adjacent pins can be molded on.
  • the crankshaft according to the invention enables an undivided eye of at least one connecting rod to be pushed onto the crank pin when assembling the basket shaft.
  • a connecting rod has a much smaller mass than one with a split eye, which leads to further, essential advantages, including a smaller space requirement.
  • the invention is also based on the object of specifying a method for producing the crankshaft according to the invention. This object is achieved by a method having the features of claim 20.
  • Such a design of the soldered connection in connection with a design of the connection surfaces in such a way that the gap between them can go to zero leads to a strength of the connection which is not less than the strength of the base material, ie the material from which the Cheeks and cones exist.
  • the heating is preferably carried out by induction and / or by infrared radiation.
  • a particular advantage of the method according to the invention is that heat treatment of the parts and, if necessary, of the solder can follow immediately after the soldering process. For this purpose, only the cooling process needs to be controlled accordingly. It is therefore possible, for example, to compensate during the cooling process, which must be carried out in a separate operation in the known processes.
  • crankshaft can be made at the same time.
  • the parts of the crankshaft can also be connected to one another in two or more successive soldering processes. In the subsequent soldering process, a solder with a melting temperature lower than that of the solder used in the previous soldering process must then be used.
  • Solder in the form of a paste or in the form of preferably bound granules is advantageous.
  • a solder foil is inserted between the mutually assigned connecting surfaces, which is stamped or deep-drawn, for example, in order to have the desired shape.
  • solder foils simplify the assembly of the crankshaft. If there is a cavity in the area of the solder joint that is only connected to the environment via the separation point, a solder foil can be used. If, in such an embodiment, the vacuum in the environment is reduced compared to the vacuum in the cavity after the solder has flowed, for example by introducing gas into the vacuum furnace, then the pressure difference causes the connecting surfaces to be pressed against one another more strongly.
  • the pins are provided with oil holes, they can be used for the correct positioning of the individual parts.
  • a pin according to claim 29 is expediently used here, the pin consisting of a material with which the solder does not bond, so that the pin can be removed again after the soldering process.
  • An angular positioning of the individual parts is also possible with other means. For example, you can give the connecting surfaces a shape, for. B. a polygonal shape that allows joining only in the correct Winkel ⁇ position. Since the individual parts of the crankshaft according to the invention are small compared to a one-piece crankshaft, they can be processed very precisely before assembly. Added to this is the extremely low delay. Therefore, the crankshaft according to the invention can be manufactured according to claim 29.
  • the cheeks can also consist of a spacer body against which the ends of the two pins to be connected to this cheek rest and a band placed around the pin ends and the spacer body.
  • the band can consist of a material reinforced with carbon fibers or similar fibers and the spacer body can be made of ceramic.
  • the connecting surfaces must be metallized.
  • a solder connection is preferably also provided between the band on the one hand and the spacer body and the pin ends on the other.
  • FIG. 1 is a view of a first embodiment
  • FIG. 3 is a view of the end piece of FIG. 2,
  • FIG. 5 is a view of the center piece of FIG. 4,
  • FIG. 13 shows a longitudinal section of an incompletely illustrated sixth exemplary embodiment.
  • crank pin 22 shows a schematically illustrated longitudinal section through the crank pin and in each case a part of the two cheeks of another embodiment example carrying it.
  • Fig.23 is a perspective view of the
  • crankshaft according to FIGS. 1 to 6 is provided for a four-cylinder reciprocating piston engine and is composed of two end pieces 1 and 2 and six middle pieces, which are precisely forged parts, but which can also be cast or sintered . All middle pieces have the same shape as a blank and can therefore be manufactured in the same tool.
  • crank pin part 4 On the two end pieces 1 and 2 each forming a cheek, in addition to the main bearing pin 1 'or 2', a crank pin part 4 is formed, the axial length of which is somewhat greater than half the axial length of the entire crank pin.
  • a crank pin part 6 and a main bearing pin part 7 are formed on each middle piece, which also forms a cheek 3.
  • the pins are provided with an outer seat or an inner seat at the division point so that they can be inserted into one another. The surfaces of these seats form the connecting surfaces that are soldered together.
  • both the crank pin parts 4 and 6 and the main bearing pin parts 7 each have a cavity 9 which extends in the longitudinal direction thereof and which has a rounded material section 9 'of the cheeks 3 carrying the pin parts is closed.
  • a cavity contributes significantly to the achievement of a very high level of design stability of the center pieces and the two end pieces 1 and 2.
  • the mass of the counterweights 10 and 11 formed on the cheeks 3 is also relatively small.
  • these counterweights have the form of a ring section lying in the plane of the cheek, which is connected to the cheek by means of three arms which are formed in one piece and which extend radially.
  • At least one oil hole 12 penetrates the web of each middle piece 3 between the cavities 9 of the main bearing part 7 and the crank pin part 4. Furthermore, the crank pin part 4 is provided with an oil hole 13 running radially outwards from its cavity 9, but which is also offset at an angle with respect to the can be shown to improve the formation of lubricating film.
  • the end pieces 1 and 2 are each provided with an oil channel formed by the holes 14 and 15. As indicated in FIG. 6 with a dash-dotted line, each oil bore 12 can be connected to the associated oil bore 13 by means of a pipe 16.
  • the parts in the area of their spigots, except for finish grinding, which are provided with the necessary oil holes, are assembled in the correct angular position, with a precisely fitting holding device holding the parts in this position.
  • An appropriately shaped solder foil is inserted at each connection point between the two connection surfaces.
  • the assembled crankshaft in a vacuum or high vacuum is heated to the required temperature door, which is about 600 0 C and preferably in the Bereiph of 1000 ° C.
  • the material forming the cheeks and tenons is tempered and the soldering zones are given _a high_ toughness by heat treatment.
  • a gaseous nitrogen is introduced into the vacuum furnace during the cooling process at a temperature above 400 ° C and the crankshaft is nitrided.
  • crankshaft shown in FIG. 7 differs from the exemplary embodiment according to FIGS. 1 to 6 only by a different design of the dividing points in the region of the pins.
  • the number of main bearing journals and crank journals could also be chosen differently. It is even possible, which also applies to all other exemplary embodiments, to provide different crank pins, for example those with different strokes, in order to equip two or more reciprocating piston machines with a single crank shaft.
  • Both the main bearing journal 108 and each existing crank journal 105 consist of two parts 107 and 107 'or 106 and 106' formed on the associated cheeks 103.
  • the parts 106 and 107 each have an outer cone as a connecting surface, which extends from the outer surface to the inner surface concentric to the longitudinal axis of the journal. However, as shown, the outer cone does not need to form the entire outer lateral surface of the parts 106 or 107. This could also have a section with a cylindrical outer surface.
  • the parts 106 'and 107' each form an inner cone which is adapted to the associated outer cone, as a result of which both cone surfaces can come into contact with one another.
  • a truncated cone-shaped solder foil made of a copper-based or nickel-based solder material is inserted between the conical surfaces assigned to one another.
  • a vertical arrangement of the crankshaft in the vacuum soldering furnace suffices that when the solder melts, the connecting surfaces belonging together move so far against one another that the gap which is initially present is reduced towards zero, which is due to the high temperature and the design of the soldering process in a vacuum or high vacuum leads to a diffusion bond with alloy formation, which gives a strength which is the same as that of the base material.
  • the base material and the soldering points are tempered and, if necessary, nitriding.
  • Oil bores 112 connect the cavities of the main journal and crank journal. As shown in FIG. 7, the oil bores 113 penetrating the crank pins can be offset circumferentially from the point of maximum eccentricity, which improves the oil film formation in the area of the highest load.
  • the exemplary embodiment according to FIG. 8 differs from that according to FIG. 7 only by a different design of the connecting surfaces of the crank pin 205 and the main bearing pin 208, ie the arrangement of the oil bores of the crank pin. For the remaining details, reference is therefore made to the preceding explanations.
  • each ring body 217 or 218 has two inner cone surfaces and cylindrical outer surfaces which are matched to the outer cones of the crank pin parts 206 and the main bearing pin parts 207.
  • the connecting surfaces of the pin parts as an inner cone and those of the ring body as an outer cone.
  • the ring body with an outer cone and an inner cone and, accordingly, to design the connecting surfaces of one pin part as an outer cone and that of the other pin part as an inner cone.
  • crank pin 206 is penetrated by two oil bores 213 in the radial direction.
  • these two oil bores only one can also be provided, and in addition the oil bores can be offset in the circumferential direction with respect to the point at maximum Eccentricity.
  • two oil bores 213 which penetrate one or the other crank pin part 206, these oil bores can be used to position the parts of the crankshaft to be connected to one another.
  • one pin is advantageously used, which is inserted into each of the oil holes, carries a sleeve made of solder material, the thickness of which is equal to the difference between the diameter of the oil hole and the diameter of the pin, and the surface of which is treated in such a way that that it does not connect to the solder. The pin therefore does not prevent it from melting of the solder so close to the conical connection surfaces that the previously existing gap is practically reduced to zero.
  • FIGS. 9 and 10 show one possibility.
  • the parts 306 and 306 ′ of the crank pin 305 formed onto the cheeks 303 are provided with an inner cone or an outer cone as a connecting surface, analogously to the exemplary embodiment according to FIG. 7.
  • the hollow crank pin 305 has an inner lateral surface which is arranged eccentrically with respect to its cylindrical outer lateral surface, which results in an inconsistent cross section in the circumferential direction.
  • crank pin The largest cross section is provided in the exemplary embodiment in the third quadrant, since the highest loads on the crank pin occur here.
  • Such a moment of resistance of the crank pin which varies over the circumference, could also be achieved by other means. . for example molded stiffening ribs.
  • an oil bore 313 penetrating radially through the crank pin 305 is offset so far in the circumferential direction from the point of maximum eccentricity that an adequate lubricating film is also formed in the area of the maximum load on the crank pin 305.
  • the cheeks 403 can also be stamped, in particular finely stamped, plates, which are provided with cylindrical punchings for receiving the main bearing journals 408 and the crank journals 405.
  • the pegs can then be formed by pipe sections, measures of stiffening and optimization of the section modulus being of course possible.
  • the lateral surfaces of the punched-outs, which each form a connecting surface are cylindrical, since the end sections of the pins engaging in the punched-out areas also have a cylindrical outer jacket surface as a connecting surface.
  • other configurations of the connecting surfaces for example a conical shape, would also be possible.
  • crank pin 405 can engage in the interior 409 of the main bearing pin 408 to a degree that is greater than the wall thickness of the crank pin 405 in the area of this engagement.
  • the pins 405 and 408 consist of tubes which are open at their ends, sealing plates 419 which are inserted in the region of the tube ends are soldered to them and can also serve as stiffeners in the manner of gusset plates at the same time.
  • these sheets 419 can also be arranged in such a way that the space available for "taking up the oil is reduced to the desired extent. This is indicated, for example, by the sheet 419 'in FIG. 11.
  • the advantage of the crankshaft according to the invention to provide dividing points wherever this is advantageous opens up the possibility, as shown in FIG. 13, of designing the cheeks and the pins as shaped sheet metal parts.
  • the cheeks 503 are each composed of a first part 503 ', to which a main bearing part 507 is integrally formed, and a second part 503'', to which a crankpin part 506 is formed. Both the first two parts 503 'and the two second parts 503''are each designed identically. Both parts form overlapping edge zones as connecting surfaces. In the exemplary embodiment, these edge zones are each formed by a generator which is parallel to the journal axis, but can also have a conical shape.
  • a bearing bush 519 made of oxide ceramic is arranged on each ring body 517. Such bushings could also be provided in the previously described embodiments. The oil holes would then be omitted there, since such bearing bushes enable lubrication-free storage.
  • the eye 520 of the associated connecting rod which is mounted on the bearing bush 519 is of undivided design since it can be pushed over the connecting body 517 like the bearing bush 519 when assembling the crankshaft.
  • Connecting rods with an undivided eye can of course also be provided in the other exemplary embodiments, since the division of the connecting rod journals here also allows them to be pushed on during assembly. However, the bearing surfaces must then be finished before the soldering.
  • the soldering in a vacuum and the subsequent heat treatment is carried out in the vacuum oven as described above.
  • the temperatures occurring here are not detrimental to the ceramic bearing bushes.
  • FIG. 14 shows an embodiment in which only the central section 603 of the connection surfaces of two parts 601 and 602 of a hollow cylindrical pin, which are soldered to one another, defines a conical surface.
  • This middle section 603 is followed by an end section 604 and 605, respectively, in which the surface lines have an arcuately curved course, where they meet the outer or inner surface area of the pin at a right angle. Instead of the right angle, an acute angle could also be provided.
  • a particularly high strength of the solder connection in particular a very high flexural fatigue strength, can be achieved with such curved connecting surfaces having connecting lines.
  • the surface lines of the connection surfaces of two parts 606 and 607 soldered to one another also have a curved course in the region of their two end sections 609 and 610. But they hit the outer or inner surface of the pin at an acute angle.
  • the central section 608 of the connecting surfaces has a very weakly conical shape. It could also be circular cylindrical. With a conical shape, however, a gap between the two connecting surfaces can also be eliminated in the central section by loading the pin in the axial direction.
  • connection surfaces of two parts 611 and 612 of a pin which are soldered to one another, as shown in FIG. 16, have an oppositely curved course in their two end sections 614 and 615, as is also the case in the exemplary embodiments according to FIGS. 14 and 15.
  • the diameter of the connecting surface of the part 611 does not decrease continuously from the place of its greatest value to the place of its smallest value, as is the case with the exemplary embodiments according to FIGS. 14 and 15. Rather, it increases again in the area of the middle section 613.
  • the resulting wave-shaped course of the lines of the connecting surface leads to the two end sections of the parts 611 and 612 engaging behind one another.
  • the shape of the central section 613 according to the invention means that the tensioning force has a component in the axial direction which eliminates the gap which is still present when the solder flows.
  • the surface lines of the connecting surfaces can have a curved or wavy course give, as shown in Fig. 18 for an inner ring 703. Since, as in the exemplary embodiments according to FIGS. 16 and 17, the course of the surface lines of the connecting surfaces of the inner ring 703 on the one hand and the two parts 701 and 702 on the other hand is selected such that the inner ring 703 both the one and the other part 701 and 702 engages behind, the clamping force also has a component in the axial direction.
  • the connecting surfaces 718 via which the parts 701 'and 702' of the pin are directly connected to one another give forms described above.
  • the surface lines of the connecting surfaces 718 have a slightly undulating course along a straight line which impinges on the outer surface surface at an acute angle.
  • the inner ring 703 ' is basically designed like the inner ring 703.
  • the ring as shown in FIG. 0, can also be designed as an outer ring 717 analogously to the exemplary embodiment according to FIG.
  • a connecting rod "ands ⁇ also consist of a material other than the two parts 706 of the pin, for example of ceramic, which is metallised in the region of the connecting surfaces.
  • a socket 801 can be provided, as shown in FIG. 1, which bridges the connection point and between the one and the two to be connected Share a tight fit, preferably a shrink connection.
  • FIG. 21 further shows that, in the exemplary embodiment by means of a sleeve 815, the pin can have a section that differs from the section lying next to it, for example with regard to its diameter.
  • An eccentric position is more important than another diameter.
  • Such an eccentricity can be realized, for example, if the sleeve 815 has an outer surface arranged eccentrically to its inner surface.
  • each of the two parts 805 of the journal of a crankshaft is provided with an annular, inwardly projecting material portion 805 'at a distance from the two parts of the joint joint, which are also formed by an inserted ring could.
  • a bush 806 lies tightly against these two material parts 805 ', which have the same inner diameter.
  • the socket 806, the material portions 805 'and the inner circumferential surface of the pin thus delimit a cavity 810 which, until the soldered connection is made, is only connected to the environment via the joint between the connecting surfaces 807 of the two parts 805.
  • connection surface 807 has a shape as shown in FIG. 15. However, other shapes, in particular shapes that result in reaching behind, are also possible.
  • the solder plate 808, which is inserted between the connection surfaces 807, is adapted to this shape of the connection surfaces.
  • a continuous slot 809 in the solder plate ensures that de . s solder the cavity 810 is in connection with the environment and is therefore also evacuated. However, as soon as the solder flows, the gap between them closes the connection surfaces 807 completely and closes the cavity 810. Now the vacuum acting in the environment is reduced, i.e. gas is introduced into the vacuum furnace. This creates a differential pressure between the vacuum in the cavity 810 and the surroundings of the crankshaft, from which a force results, which also compresses the parts 805 in the axial direction and therefore helps to eliminate the gap between the connecting surfaces 807.
  • the exemplary embodiment according to FIG. 24 differs from that according to FIG. 22 only in that the radially inwardly projecting material parts 805 'of the parts 805 of the pin carried by the cheeks 811 engage in annular grooves in the socket 806 and in that the pin has oil holes 812 is provided, which penetrate the pin wall from the cavity -810.
  • the cross-sectional shape of the material parts 805 'and the annular grooves of the socket 806 receiving them is selected so that the clamping force with which the engagement in the annular grooves takes place also results in a force component in the axial direction. This force component has the same effect as in the exemplary embodiments according to FIGS. 16 to 20.
  • the parts 805 of the pin are heated and / or the socket 806 is cooled, namely until the socket 806 can be inserted into the pin.
  • An oil supply pipe 813 opens into the cavity 810, which can be inserted into the interior of the socket 806 through the opening in the cheek 811 and from here penetrates the socket 806 to the mouth into the cavity 810.
  • the size of which can easily be adapted to the desired value means be seen, which hold back the oil required for a start-up and feed the oil holes 812 during a start-up.

Abstract

Dans un vilebrequin composé, les parties individuelles sont mutuellement reliées par le soudage sous vide et à haute température des surfaces de liaison prévues au niveau de leurs points de séparation.
EP88907120A 1987-08-22 1988-08-17 Vilebrequin compose et son procede de fabrication Withdrawn EP0326606A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873728142 DE3728142A1 (de) 1987-01-13 1987-08-22 Zusammengesetzte kurbelwelle und verfahren zu ihrer herstellung
DE3728142 1987-08-22

Publications (1)

Publication Number Publication Date
EP0326606A1 true EP0326606A1 (fr) 1989-08-09

Family

ID=6334340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88907120A Withdrawn EP0326606A1 (fr) 1987-08-22 1988-08-17 Vilebrequin compose et son procede de fabrication

Country Status (4)

Country Link
EP (1) EP0326606A1 (fr)
JP (1) JPH02501156A (fr)
BR (1) BR8804261A (fr)
WO (1) WO1989002037A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837294A1 (de) * 1988-11-03 1990-05-10 Emitec Emissionstechnologie Aufgebaute kurbelwelle
WO1990013761A1 (fr) * 1989-04-28 1990-11-15 Michael Schenk Sous-ensemble mecanique, en particulier arbre a cames, et procede pour sa fabrication
GB2357567B (en) * 1999-12-20 2001-11-07 Daimler Chrysler Ag Welded crankshaft
DE10258759A1 (de) * 2002-12-16 2004-06-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Kurbelwelle für eine Kolbenhubmaschine
JP3133309U (ja) * 2007-04-26 2007-07-05 株式会社 近藤工作所 自動車エンジン用のクランクシャフト

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Publication number Priority date Publication date Assignee Title
GB191000536A (fr) *
US2256726A (en) * 1939-08-24 1941-09-23 Gen Motors Corp Crankshaft construction
US2741932A (en) * 1952-04-23 1956-04-17 Isthmian Metals Inc Crankshaft and method of making the same
US3567257A (en) * 1968-10-11 1971-03-02 Connecticut Research & Mfg Cor Tapered pipe joint
SU667345A1 (ru) * 1972-03-21 1979-06-15 Golovachev Vladimir A Способ изготовлени коленчатого вала
SE428051B (sv) * 1981-10-08 1983-05-30 Volvo Ab Vevaxel for forbrenningsmotorer samt sett vid dess framstellning
JPS60260719A (ja) * 1984-06-05 1985-12-23 Toyota Motor Corp 鋼板製クランクシヤフト

Non-Patent Citations (1)

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Title
See references of WO8902037A1 *

Also Published As

Publication number Publication date
JPH02501156A (ja) 1990-04-19
BR8804261A (pt) 1989-03-14
WO1989002037A1 (fr) 1989-03-09

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