EP0275876A2 - Procédé et appareil de dressage d'une pièce - Google Patents

Procédé et appareil de dressage d'une pièce Download PDF

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Publication number
EP0275876A2
EP0275876A2 EP88100107A EP88100107A EP0275876A2 EP 0275876 A2 EP0275876 A2 EP 0275876A2 EP 88100107 A EP88100107 A EP 88100107A EP 88100107 A EP88100107 A EP 88100107A EP 0275876 A2 EP0275876 A2 EP 0275876A2
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EP
European Patent Office
Prior art keywords
straightening
main bearing
crankshaft
axis
main
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
Application number
EP88100107A
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German (de)
English (en)
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EP0275876A3 (en
EP0275876B1 (fr
Inventor
Hans-Georg Augustin
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Individual
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Publication of EP0275876A3 publication Critical patent/EP0275876A3/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/16—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts of specific articles made from metal rods, tubes, or profiles, e.g. crankshafts, by specially adapted methods or means

Definitions

  • the invention relates to a method and a device according to the preambles of claims 1 and 14.
  • the invention is based on the object of proposing a straightening method which, when used, requires considerably lower forces and which does not require any additional tools.
  • a device suitable for carrying out this method is to be proposed.
  • the invention has the advantage that the cold rolling for straightening can be carried out in several successive steps and the forces exerted in each of these steps of up to approximately 50 kN can be considerably smaller than when using the known device.
  • This makes it possible to use the same devices and tools for straightening, which are also used for deep rolling, without the risk that the deep rolling rollers are overloaded during the straightening process.
  • This simultaneously enables the workpieces to be deep-rolled and straightened in the same processing station, the workpieces being able to remain in the clamped state during the measurement of the radial run-out deviations, e.g. can be determined with measuring devices integrated in the deep rolling device.
  • Fig. 1 shows a workpiece 1 in the form of a crankshaft.
  • This has five main bearing journals 2a to 2e, the axes of which lie on a theoretical axis 3, here the axis of rotation of the crankshaft, four crank journals 4a to 4d arranged between the main bearing journals 2 and a crank web 5 each between these and the main bearing journals 2.
  • grooves 6a to 6d with circular cross sections are provided, each rotating around the axis 3.
  • the workpieces 1 can consist of steering knuckles, stepped shafts or the like, with fillets corresponding to fillets 6, which are generally arranged at the transitions from one cross-section to another and serve to reduce the fatigue strength that is too low in the area to enlarge the cross-sectional transitions.
  • FIG. 1 a beat diagram is shown in FIG. 1, which indicates an arbitrarily assumed curvature of the crankshaft in the drawing plane on a greatly enlarged scale.
  • the distances 1 of the respective center points of the main bearing journal 2 from the left end of the crankshaft in FIG. 1 are plotted along the abscissa, while the respective deviation S of these center points from the theoretical axis 3 is plotted along the ordinate in large magnification.
  • the deviations S that actually occur are generally very small, amount to only a few tenths or hundredths of a millimeter and can each be both positive and negative. 1 also relates to a selected angle of rotation position of the crankshaft. Corresponding beat diagrams can be drawn for other rotational angle positions.
  • crank pins 4b to 4c lie in a single plane, which also contains the theoretical axis 3, then this is declared the main plane, while the plane perpendicular thereto is defined as the secondary plane. If, on the other hand, the crank pins 4a to 4d differ from FIG.
  • the axis of the crank pin 4b and the axis 3 define a first plane
  • the axis of the crank pin 4c and the axis 3 define a second plane
  • the bisector between these two planes and the axis 3 define a third plane that in FIG this example would be the main plane for the main journal 2c.
  • the plane perpendicular to this is the secondary plane for this main journal 2c.
  • the main plane for the main bearing journals 2a and 2e located at the ends of the crankshaft, each of which is only adjacent to one crank journal 4a or 4d results from the axis 3 and the axes of these crank journals 4a and 4d, while the planes perpendicular thereto the minor levels are.
  • the invention is based on the knowledge that Richtope rations in the secondary planes generally also result in deformations of the crankshaft in the main planes, while conversely, straightening operations in the main planes practically cause no reactions or deformations in the secondary planes. This results in the straightening strategy according to the invention, first of all eliminating all components of a field located in the secondary levels and only then eliminating all components of the field located in the main levels.
  • Corrected straightening parameters are understood in particular to mean that the magnitude of the force required to bring about the remaining straightening dimension .DELTA.Sn is changed depending on the history of the crankshaft and, above all, depending on which forces act on the main bearing journal in previous steps were exercised. In particular, if a certain straightening force was not sufficient in a first step to bring about the desired straightening dimension, a higher straightening force is selected in a subsequent step. If the straightening parameters used in previous straightening operations are not taken into account, reasonable straightening is hardly possible due to the changing dependency between the straightening dimension and the straightening force. The dependencies of the achievable standard dimensions on the directing forces applied must be determined empirically.
  • the values obtained in each case can be collected and stored in a database, which can be used for statistical purposes as a table of values for the directives to be used in each case.
  • a data processing system is therefore preferably used to calculate the straightening forces, in the memory of which all data relating to a specific workpiece type are collected.
  • the workpiece is aligned in the main planes by correspondingly calculating and empirically determining the standard dimensions ⁇ Sh lying in the main plane or values retrieved from the database can be determined for the respective directives.
  • These straightening operations in the main plane are also preferably carried out successively in a plurality of successive steps until finally the remaining deviations for all main bearing journals lie within the defined tolerance ranges.
  • the invention is based on the knowledge that straightening can be carried out by cold rolling and therefore, for example, with the aid of pressure rollers inserted into the throats of the main bearing journal 2, by exerting sufficient pressure on selected circumferential sections of the walls delimiting the throats.
  • the crankshaft is rotated continuously or with a pendulum motion, or the respective pressure roller is guided in a continuous or reciprocating motion around the crankshaft or its theoretical axis. It is only necessary to vary the forces exerted by the pressure rollers on the crankshaft as a function of the respective angular position of the crankshaft with respect to the pressure roller in such a way that directivity is only in the required direction, i.e. is achieved when the pressure rollers run onto the preselected sections, while in all other directions no sufficient forces are exerted by the pressure rollers to achieve a directional effect.
  • crankshafts DE-PS 30 37 688
  • a device of this type suitable for the purposes of the invention is explained in more detail below with reference to FIGS. 2 to 6 and with reference to a workpiece 1 which consists of a crankshaft with only two crank pins 4a, b and three main bearing pins 2a, b, c.
  • the device contains two master shafts 8a and 8b which are rotatably mounted and arranged one above the other in a frame 7 and which correspond in size and shape to the workpiece 1 to be machined and in the example shown correspondingly many main bearing journals 10a and 10b, crank journals 11a and 11b and crank arms 12a and 12b.
  • Both master shafts 8a, b can be driven synchronously by a motor 13 mounted on the frame 7, on the drive shaft of which a gearwheel 14 is fastened.
  • the gearwheel 14 is connected to a gearwheel 15 fastened on the master shaft 8a, which is connected via another gearwheel 16 to a gearwheel 17 fastened to the master shaft 8b, so that when the motor 13 is switched on both master shafts are driven in the same direction.
  • Each main bearing and crank pin 10 or 11 is rotatably mounted in a lower jaw 18 or 19 of a pliers-like holder for the workpiece 1.
  • Each jaw 18 or 19 is pivotally connected to an upper jaw 21 or 22 of the holder by means of a pivot pin 20 (FIG. 2).
  • the two jaws 18, 21 and 19, 22 each carry a rolling tool.
  • This has two cylindrical support rollers 23, which are rotatably mounted and arranged in parallel in the lower jaw 18 and 19, and a combination of a profile roller 24 and two pressure or deep-rolling rollers 25, known per se, mounted in the upper jaw 21 or 22 (cf. 3 and 4).
  • the axes of rotation of the pressure rollers 25 and the axis 3 of the workpiece 1 or the axes of rotation of the profile rollers 24 parallel thereto generally form an angle of approximately 35 °.
  • the pressure rollers 25 are supported in circumferential grooves 26, which have a circular cross section and at the front ends of the profile role 24 are formed.
  • the profile roller 24 is rotatably mounted on a shaft 27 fastened in the frame 7, while the deep-rolling rollers 25 are cantilevered on the profile roller 24.
  • a control device is assigned to each tong-like holder, only the control device for the holder and the main bearing journal 2c being shown in FIG. 3.
  • the control device each contains a hydraulic or pneumatic cylinder 28 fastened to the rear end of the associated lower jaw 18, in which a piston 29 is slidably mounted and carries a piston rod 30 articulated on the upper jaw 21, so that the upper jaw 21 can be moved in or out Extending the piston rod 30 can be pivoted about the pivot pin 20.
  • the chambers of the cylinder 28 lying on both sides of the piston 29 can optionally be connected via lines 31, 32 and a directional valve 33 to a line 35 leading to a tank 34 or a further line 36.
  • Line 36 leads to an output of an actuator 37, e.g. of a further directional valve, which is simultaneously designed as a pressure control valve and has a second, blocked outlet.
  • a line 38 connected to one input of the actuator 37 is either connected via a limiting valve 39 to the one output or via a further limiting valve 40 to the other output of a further directional valve 41, one input of which is shut off and the other input of which is connected to the output of one Pump 43 driven by a motor 42 for the hydraulic or pneumatic medium, for example Oil, is connected.
  • the outlet of this pump 43 is also connected to a limiting valve 44 which is connected to the tank 34 via a line 45.
  • the output of the pump 43 is still connected to the other input of the actuator 37 via a limit valve 46.
  • the directional control valves 33 and 41 are, for example, with conventional switching magnets 33a and 41a provided, while the actuator 37 is assigned a control member 37a, which may also consist of a switching magnet.
  • the switching magnets 33a, 41a and the control element 37a are connected to a sequence control 47, and the control element 37a also leads to the output of a power amplifier 48c.
  • each directional control valve 33 and 41 can assume two positions a and b , the position a being the basic position produced by a compression spring 33b, 41b, while the other position b is produced by the associated switching magnet 33a, 41a being correspondingly connected via the sequence control 47 is excited.
  • the actuator 37 can also assume two positions a and b , the position b being produced by supplying a control signal to the control element 37a from the sequence control 47 or from the associated power amplifier 48c, while the other position a is the basic position produced by a compression spring 37b.
  • the actuator 37 can be controlled by an analog signal from the associated power amplifier 48c to take any intermediate position between the two positions a and b , in which the pressure at its only open output assumes a value which depends on the pressure its two inputs and also depends on the proportions with which the passages indicated by arrows are involved in the passage of the pressure medium.
  • the control device has a measuring element 49 attached to the frame 7 (FIG. 3).
  • the measuring element 49 consists, for example, of a commercially available displacement sensor with a plunger 50 which is pressed against the main bearing journal 2c by a compression spring 51. Depending on the respective position of this plunger 50, an electrical signal appears at the output of the measuring element 40, which is fed to a measuring amplifier 52c assigned to the main journal 2c.
  • purely inductive, non-contact displacement sensors can be used to measure the deviations of the main bearing journals from the concentricity.
  • a force meter 53 can be provided for monitoring the forces which are exerted on the associated pressure roller 25 or the workpiece 1 with the upper jaw 21 and which, for example, consists of a strain gauge connected to the jaw 21 and an electrical signal at its output emits, which is also supplied to the measuring amplifier 52c.
  • control devices for the other main bearing journals 2a and 2b are designed accordingly and provided with corresponding measuring amplifiers 52a, b or power amplifiers 48a, b (FIG. 3). Further, similarly constructed control devices can be assigned to the holders for the crank pins 4a, b, although only the parts required for deep-rolling but not also the parts required for straightening need to be provided.
  • a display element 54 (FIG. 1), e.g. a rotary encoder, which can consist of a conventional angle encoder and whose output signals are fed to an amplifier 55.
  • the output signals of the measuring amplifier 52 and the amplifier 55 are fed via a line bundle 56 to a data processing system 57 and from there via a further line bundle 58 to the power amplifiers 48a, b, c.
  • a data memory 59 (not shown, can be assigned to the computer 57.
  • the workpiece 1 that is to say the crankshaft shown in FIGS. 1 to 4
  • the workpiece 1 is to be subjected, for example, to a customary deep rolling process.
  • the directional control valves 33 are first moved into position b by means of the sequence control 47, which is provided with corresponding switches or can be controlled automatically associated switching magnets are excited accordingly.
  • the lines 31 are connected to the tank 34 and the lines 32 to the lines 36, which lead to the pump 43 via the actuators 37 and the limiting valves 46.
  • crankshaft to be machined is now inserted into the holder by placing its main bearing or crank pin 2 or 4 on the support rollers 23 of the associated lower jaws 18 or 19, which is easy due to the corresponding shape of the master shafts 8a, b is possible (see in particular Fig. 2).
  • the directional control valves 33 are then returned to the basic position a by de-energizing the associated switching magnets and, at the same time, the actuators 37 are brought into position b by means of the sequence control 47.
  • the lines 32 are connected to the tank 43 and the lines 31 are connected to the pump 43 via the limit valves 39.
  • the motor 13 is switched off and the tong-like holders are opened again by appropriate control.
  • the machined crankshaft can now be removed and measured in any manner and in a manner known per se, in order to determine the deviations present after the deep rolling process, the guide dimensions ⁇ Sn and ⁇ Sh and the required guide forces.
  • the workpiece 1 is preferably measured when the device described is used in that it remains clamped in the pliers-like holders and is scanned with the measuring elements 49. So that no large forces are exerted by the pressure rollers 25, the directional control valves 33 and 41 are left in the basic position a, while the actuator 37 is controlled into position b by means of the sequence control 47. As a result, the line 31 is now connected to the pump 43 via the limiting valve 46, which is set to a lower pressure than the limiting valve 39. After the engine 13 is switched on again, the crankshaft to be machined again performs its characteristic rotary movement.
  • the measuring elements 49 are activated, as a result of which the signals measured by them are fed via the measuring amplifiers 52 and the line bundle 56 to the data processing system 57, to which the output signals of the display element 54 are also continuously fed.
  • the data processing system 57 now uses a previously entered program and the continuously supplied data from the measuring members 49 and the display member 54 to first determine the respective size and the respective direction of the concentricity deviations for all main bearing journals 2a, 2b and 2c and then calculates the standard dimensions ⁇ Sn and ⁇ Sh and the straightening forces to be exerted by the pressure rollers 25 on the main bearing journals 2a, b, c, all values and dependencies relating to similar workpiece types stored in the database 59 being able to be taken into account.
  • the data processing system 57 converts the determined directional forces into analogue control signals for the control elements 37a of the actuators 37.
  • crankshaft to be machined remains in the pliers-like holders, while the directional control valves 33 and the actuators 37 are controlled in their basic position gna.
  • the directional control valve 41 is transferred to position b .
  • the crankshaft to be machined is again ver in its characteristic orbital motion sets, while at the same time the lines 31 are initially only connected to the pump 43 via the limit valves 46.
  • the data processing system continuously transmits control signals which are fed to the control elements 37a via the line bundle 58 and the power amplifiers 48a, b, c.
  • their valve stems are displaced more or less in the direction of the positions b in accordance with the calculated directional forces, with the result that pressure is generated in the lines 36, which may be between the minimum value of the limiting valve 46 and the maximum value of the limiting valve 40.
  • these are also controlled such that initially only straightening operations are carried out on the secondary levels on all main bearing journals.
  • These straightening operations are preferably carried out for several or all main bearing journals simultaneously or in succession and in accordance with the above description in several successive steps, between which the crankshaft is measured again, so that the data obtained are stored in the database 59 and then new straightening parameters are calculated for the next step in each case can be.
  • the advantage here is that the direction in which a straightening operation is carried out on any main journal can be preselected only by the associated actuators 37 providing sufficiently large pressures in the lines 36 at the right moment, while at all other times the pressure in the lines 36 is reduced to a pressure which cannot effect a straightening operation. Since each individual main bearing journal 2a, b, c also has its own holder and control device , the various straightening operations can be carried out in a single operation even if different main and secondary levels are assigned to all main bearing journals.
  • the maximum system pressure is finally displayed on the limiting valve 44 in order to avoid the occurrence of critical overpressures.
  • the force meter 53 it is possible to constantly monitor the forces actually exerted on the pressure rollers 25 and, if necessary, to provide control circuits for the cylinders 28, so that the straightening forces calculated by the data processing system 57 actually actually affect the workpieces 1 or the main bearing journal 2 be exercised.
  • the pressures supplied to the cylinders 28 during straightening can also be generated by controlling each actuator 37 with a device shown schematically in FIG. 5.
  • this device contains a sleeve 60 which is connected to the valve stem of the actuator 37 and in which a plunger 61 is displaceably guided.
  • the sleeve 60 has a vertically protruding arm 62 and the plunger 61 has a vertically protruding arm 63 which projects through a slot in the sleeve wall.
  • an adjusting screw 64 is rotatable, but axially immovable, the threaded portion of which protrudes through a threaded hole in the arm 62. Therefore, by turning the adjusting screw, the distance of the end 65 of the plunger 61 protruding from the sleeve 60 from the valve stem can be changed.
  • the free end of the plunger 61 is pressed by a compression spring 37b acting on the valve stem against the control element in the form of a cam plate 67, which is fastened, for example, to a free end of the master shaft 8a and which follows its rotary movements.
  • a compression spring 37b acting on the valve stem against the control element in the form of a cam plate 67, which is fastened, for example, to a free end of the master shaft 8a and which follows its rotary movements.
  • the same is described with reference to FIG. 3 benen embodiment exerted a greater or lesser force on the pressure roller 25.
  • the cam plate 67 is fastened on the master shaft 8a by means of a fastening screw 68 and then always assumes the same angle of rotation position relative to this and thus also to the crankshaft to be straightened.
  • cams 67 are used for straightening in the secondary and main planes, which are also set precisely by rotating the shaft 8a in accordance with the directions in which the straightening forces are to be made effective.
  • the size of the maximum straightening force can be changed by turning the adjusting screws 64.
  • any main bearing journal 2 shown schematically in FIG. 6 it would only be necessary per se to exert the straightening force once on an imaginary line extending parallel to the theoretical axis 3 on the circumference of the main bearing journal 2, this line extending an Arrow v is located, which indicates the direction of the straightening operation.
  • the straightening forces to be used would be very large.
  • substantially smaller straightening forces of, for example, up to 50 kN are sufficient if they are exerted along a selected section 69, which is indicated schematically in FIG. 6 by a widened line, and if this selected section 69 is rolled several times with the pressure roller 25.
  • the section 69 extends along the circumference of the main bearing journal 2 by approximately equal parts on both sides of the imaginary line over an arc of, for example, 10 ° to 20 ° in total.
  • the pressure acting on the cylinder 28 is expediently gradually increased to a maximum value before the pressure roller 25 hits the selected section 69, then is held at this maximum value along section 69 and finally gradually reduced after leaving section 69.
  • this increase and decrease in pressure can be predetermined by appropriate programs will.
  • this control takes place in that the circumference thereof is provided with an approximately circular section 70, a rising section 71, a further circular section 72 and a falling section 72, the section 72 being that section of the main bearing journal 2 corresponds along which the pressure roller 25 exerts the straightening force required for the straightening operation. If it is desired with this type of control to reduce the time required for one revolution of the crankshaft to be machined, only the engine 13 needs to be set to a higher speed level whenever the pressure roller 25 is not on the selected section 69.
  • the straightening operation can also be carried out by subjecting the master shafts 8a, b and the crankshaft to be straightened to a reciprocating oscillating movement in such a way that the pressure rollers 25 always only overrun the preselected sections 69 and narrow neighboring sections.
  • the pressure acting on the pressure rollers 25 in the adjacent areas is expediently gradually increased or decreased.
  • the data processing system 57 or the cam plates 67 can be used.
  • a reversing motor with a corresponding control is expediently used as the motor 13.
  • Another important parameter when straightening by cold rolling is the number of rollovers of the selected sections 69. Because during rollover, i.e. When the pressure rollers 25 act on the selected sections 69, flow can be impeded in the direction of the edges of the throats 6, which can only be compensated for by repeated rolling over, the pressure rollers are expediently guided at least five, preferably at least ten times over the selected section 69.
  • the invention is not limited to the exemplary embodiments described, which can be modified in many ways. This applies, for example, to the control devices described, Actuators and control, measuring and display elements. In particular, it is also not necessary, although expedient, to use the device described both for deep-rolling and for measuring and straightening the workpieces 1. Alternatively, it would be possible, in particular, to measure the crankshafts outside the device and to provide two devices for deep-rolling and straightening, one of which is used exclusively for deep-rolling, the other, however, exclusively for straightening.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
EP88100107A 1987-01-17 1988-01-07 Procédé et appareil de dressage d'une pièce Expired - Lifetime EP0275876B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873701223 DE3701223A1 (de) 1987-01-17 1987-01-17 Verfahren und vorrichtung zum richten eines werkstuecks
DE3701223 1987-01-17

Publications (3)

Publication Number Publication Date
EP0275876A2 true EP0275876A2 (fr) 1988-07-27
EP0275876A3 EP0275876A3 (en) 1990-01-24
EP0275876B1 EP0275876B1 (fr) 1995-04-05

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ID=6318985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100107A Expired - Lifetime EP0275876B1 (fr) 1987-01-17 1988-01-07 Procédé et appareil de dressage d'une pièce

Country Status (5)

Country Link
US (1) US4860566A (fr)
EP (1) EP0275876B1 (fr)
JP (1) JPS63212015A (fr)
KR (1) KR880008843A (fr)
DE (2) DE3701223A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299111A2 (fr) * 1987-07-13 1989-01-18 Wilhelm Hegenscheidt Gesellschaft mbH Procédé et dispositif de redressage de pièces présentant des parties excentrées
CN1314513C (zh) * 2003-12-11 2007-05-09 东风汽车有限公司 一种曲轴滚压强化工艺
WO2012092920A1 (fr) * 2010-12-23 2012-07-12 Hegenscheidt-Mfd Gmbh & Co. Kg Procédé de dressage de vilebrequins par rouleaux

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235838A (en) * 1987-07-13 1993-08-17 W. Hegenscheidt Gesellschaft Mbh Method and apparatus for truing or straightening out of true work pieces
DE10052753A1 (de) 2000-10-25 2002-05-08 Hegenscheidt Mfd Gmbh & Co Kg Gerät zum Festwalzen von Kurbelwellen
AU2002216689A1 (en) * 2000-11-22 2002-06-03 Ingersoll Cm Systems, Inc. Apparatus and method for rolling workpieces
US6408663B1 (en) 2001-02-23 2002-06-25 Short Block Technologies, Inc. Method and apparatus for truing crankshafts
DE10202564B4 (de) * 2002-01-24 2005-08-11 Hegenscheidt-Mfd Gmbh & Co. Kg Verfahren zum Fest- und Richtwalzen einer Kurbelwelle für einen Verbrennungsmotor
DE10308124B3 (de) * 2003-02-26 2004-09-23 Hegenscheidt-Mfd Gmbh & Co. Kg Verfahren zum Festwalzen von Übergängen zwischen Lagerzapfen und Wangen von Kurbelwellen
US7188497B2 (en) * 2005-04-07 2007-03-13 International Engine Intellectual Property Company, Llc Method for straightening an eccentric shaft
JP5472051B2 (ja) * 2010-11-17 2014-04-16 三菱自動車工業株式会社 フィレットローリング加工装置及びフィレットローリング装置の異常判定方法
CN102784816B (zh) * 2012-08-13 2014-07-09 杭州电子科技大学 大型柴油机曲轴安装调试方法
CN104209811B (zh) * 2014-09-09 2016-11-16 南车戚墅堰机车有限公司 曲轴轴向加工余量自动分配方法
CN107030143A (zh) * 2017-05-27 2017-08-11 天润曲轴股份有限公司 曲轴完全残余压应力校直装置和工艺
FR3090424B1 (fr) * 2018-12-19 2021-04-09 Renault Sas Procédé de redressage d'un arbre par application d'un effort variable radial d'écrouissage sur l'arbre en rotation
JP7137220B2 (ja) * 2019-06-19 2022-09-14 上越工業株式会社 異形長尺ワークの曲り矯正装置及び直線状長尺ワークの製造方法

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DE1070955B (de) * 1959-12-10 Wilhelm Hegenscheidt Kommanditgesellschaft Erkelenz (RhId) Vorrichtung zum gleich zeitigen Festwalzen der Hohlkehlen und der Laufflache an den Kurbelzapfen und Lagerstellen λ on Kurbelwellen
GB957711A (en) * 1959-06-17 1964-05-13 Birmingham Small Arms Co Ltd Machines for rolling the bearing fillets of crankshafts
GB957712A (en) * 1959-06-17 1964-05-13 Birmingham Small Arms Co Ltd Machines for rolling the bearing fillets of crankshafts
GB957805A (en) * 1961-07-12 1964-05-13 Birmingham Small Arms Co Ltd Improvements in or relating to the working of metals
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JPS59101228A (ja) * 1982-11-30 1984-06-11 Hino Motors Ltd クランクシヤフトの曲り矯正法と装置
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Cited By (7)

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Publication number Priority date Publication date Assignee Title
EP0299111A2 (fr) * 1987-07-13 1989-01-18 Wilhelm Hegenscheidt Gesellschaft mbH Procédé et dispositif de redressage de pièces présentant des parties excentrées
EP0299111A3 (en) * 1987-07-13 1990-01-24 Wilhelm Hegenscheidt Gesellschaft Mbh Method and apparatus for straightening unbalanced workpieces
CN1314513C (zh) * 2003-12-11 2007-05-09 东风汽车有限公司 一种曲轴滚压强化工艺
WO2012092920A1 (fr) * 2010-12-23 2012-07-12 Hegenscheidt-Mfd Gmbh & Co. Kg Procédé de dressage de vilebrequins par rouleaux
CN103534048A (zh) * 2010-12-23 2014-01-22 黑根沙伊特-Mfd有限公司及两合公司 矫直辊压曲轴的方法
CN103534048B (zh) * 2010-12-23 2015-12-09 黑根沙伊特-Mfd有限公司及两合公司 矫直辊压曲轴的方法
US9676017B2 (en) 2010-12-23 2017-06-13 Hegenscheidt-Mfd Gmbh & Co. Kg Method for the roller-straightening of crankshafts

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DE3701223A1 (de) 1988-07-28
US4860566A (en) 1989-08-29
DE3853485D1 (de) 1995-05-11
JPS63212015A (ja) 1988-09-05
EP0275876A3 (en) 1990-01-24
EP0275876B1 (fr) 1995-04-05
KR880008843A (ko) 1988-09-13

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