EP0683012A1 - Laminoir à métaux muni d'ensembles opposés d'unités à machines pour l'usinage d'une pièce centrée et procédé de laminage des gorges circulaires d'une pièce - Google Patents

Laminoir à métaux muni d'ensembles opposés d'unités à machines pour l'usinage d'une pièce centrée et procédé de laminage des gorges circulaires d'une pièce Download PDF

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Publication number
EP0683012A1
EP0683012A1 EP95100046A EP95100046A EP0683012A1 EP 0683012 A1 EP0683012 A1 EP 0683012A1 EP 95100046 A EP95100046 A EP 95100046A EP 95100046 A EP95100046 A EP 95100046A EP 0683012 A1 EP0683012 A1 EP 0683012A1
Authority
EP
European Patent Office
Prior art keywords
crankshaft
fillets
rolling
rotation
axis
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
EP95100046A
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German (de)
English (en)
Other versions
EP0683012B1 (fr
Inventor
William P. Gottschalk
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.)
Hegenscheidt MFD GmbH and Co KG
Original Assignee
Wilhelm Hegenscheidt GmbH
Hegenscheidt MFD GmbH and Co KG
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Publication date
Application filed by Wilhelm Hegenscheidt GmbH, Hegenscheidt MFD GmbH and Co KG filed Critical Wilhelm Hegenscheidt GmbH
Publication of EP0683012A1 publication Critical patent/EP0683012A1/fr
Application granted granted Critical
Publication of EP0683012B1 publication Critical patent/EP0683012B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/182—Rolling annular grooves
    • B21H7/185—Filet rolling, e.g. of crankshafts
    • 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
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins

Definitions

  • This invention relates to metal working, more specifically to a new and improved machine for rolling fillets of metallic workpieces and to a new and improved method for simultaneously rolling all or a number of fillets of a workpiece such as e.g. the fillets of crank pins of an engine crankshaft.
  • crank pins and main bearings for downsized crankshafts, as well as crankshafts for larger engines have been strengthened by various fillet rolling machines and processes.
  • U.S. Patent 5,138,859 to Winkens published August 18, 1992, for a Method and apparatus for multi-stroke crankshaft rolling and deep rolling "discloses a machine unit and method for rolling crankshaft journal grooves to solve the problems that preclude the simultaneous rolling of adjacent crankpins with the available equipment.
  • the machine unit and the crankshaft a first relative position to each other, so that the Fillets of a first set of non-adjacent tenons can be rolled.
  • the fillets of a second set of non-adjacent pins are then rolled in a second relative position of the machine unit and the crankshaft. With such a construction and method, all fillets are rolled in two stages or two process steps by a single machine.
  • the present invention relates to a machine, tool and method similar to that disclosed in copending application No. 176,792, but further enhancing this technique by providing new and improved methods, rolling equipment and tools that are suitable for a wide range of applications are suitable, in particular those in which simultaneous rolling of the fillets from opposite sides of the workpiece or the crankshaft is necessary or desired.
  • the present invention solves the space problems encountered in many facilities in which shuttle tools are required to roll the closely spaced or adjacent fillets, which complicates the use of bulky, side-by-side rolling equipment or even excludes.
  • a preferred embodiment of the machine of this invention has opposed rows of fillet roller claw units capable of simultaneously deep rolling all fillets of a crankpin seat including the adjacent crank seats and also the main bearing seats of a crankshaft.
  • the opposing rows of fillet roller claw units can be moved toward and away from each other simultaneously between (1) an open position in which unfinished workpieces such as e.g. Crankshafts can be loaded into the lathe or finished workpieces can be unloaded from the lathe, and (2) a closed position in which the fillet rolling tools engage in all or a number of the crankpin fillets including the fillets of adjacent crankpins and also in the main bearings that they can be rolled and solidified at the same time.
  • unfinished workpieces such as e.g. Crankshafts
  • the fillet rolling tools engage in all or a number of the crankpin fillets including the fillets of adjacent crankpins and also in the main bearings that they can be rolled and solidified at the same time.
  • This invention further relates to methods of simultaneously rolling fillets of workpieces such as e.g. Crank seats of an elongated internal combustion engine crankshaft, comprising the steps of: (a) inserting one end of the crankshaft into the vice of a power lathe and the other end into a bracket of the machine so that the crankshaft can be driven by the machine about its axis of rotation, (b ) Arranging the left and right side rows of the fillet roller on the left and right side of the axis of rotation, respectively, so that the claw arms of the device extend substantially transversely to the axis and make it possible to load an unprocessed crankshaft into the lathe, (c) moving the left and right side rows of the device from an initial position spaced from the crankshaft to a position where the fillet rolling tool held on the claw arms contacts the fillets of the pin seats, (d) applying a load to the pin seats by the claw arms and the tool, (e) driving the lathe e to rotate the cranks
  • FIG. 1 depicts part of a machine 10 for rolling the fillets of the seats of a workpiece, which are shown here as angularly offset and adjacent crank pins 12, 14 of an elongated crankshaft 16 of an internal combustion engine.
  • the crankshaft 16 is mounted in a workpiece rotating lathe 17 or other mechanism with the front end or flange end 18 of the crankshaft mounted in the chuck of the driving stick 20 and the opposite end on a centering mandrel 24 of the lathe tailstock.
  • the drive stick is selectively rotated by a motor 30 so that the crankshaft 16 rotates about its axis of rotation 32.
  • the fillet rolling machine 10 has left and right side rows 36, 38, each of which has a plurality of oscillating claw units 40, 42.
  • Each oscillating claw unit consists of upper and lower claw arms 44, 46 (left side row of the claw units 40) and 48, 50 (right side row of the claw units 42) which are rotatably connected between the inner and outer ends thereof by pivot pins 52, 54.
  • the outer ends of each pair of arms are operatively connected by individually extendable and contractible pneumatic or hydraulic drive cylinders 56, 58 or other suitable control actuators which apply compressive force to the fillet machining rolls for rolling the fillet of the crank pin upon expansion.
  • Each drive cylinder has a piston with a connecting rod 60 or 62 which is rotatably connected to a lower arm, while the corresponding cylinder tube projects into a fork shoe 64 or 66 which is rotatably connected to a corresponding upper claw arm 44 or 48.
  • each claw unit face each other directly and are angularly offset with upper and lower tools 68, 70 or 72, 74 ( Figure 2) for deep rolling annular grooves 86, 88 and 90, 92 and adjacent crank pins 12, 14 of the crankshaft 16, which are separated by annular webs 94, 96.
  • the lower tools 70, 74 are secured to the lower arms of the left and right claw units and have pairs of spaced support rollers 98, 100 which engage and support the pin seats while their fillets are being rolled.
  • Such lower support tools are disclosed in more detail in copending U.S. Application No. 176,792, referred to above.
  • Each left side 36 claw unit 40 and each right side claw unit 42 is supported by a respective upper swing arm 104, 106 rotatably mounted on the left and right sides of movable upper frames 108, 110 and suspended therefrom, the frames 108, 110 are mounted on a rectilinear slide mechanism or on carriages 112, 114 ( Figures 5 and 6) running along front and rear horizontal support rails 116, 118.
  • the rails 116 are in turn fastened on a support beam 120 which is held by stands 122 which are fastened on the floor or a base plate 124.
  • Actuators such as hydraulic drive cylinders 126, 128 are operatively connected to the left and right frames 108 and 110 and can be individually driven to move the frames and the associated rows of oscillating claw units operatively connected thereto between a retracted position ( Figure 5 ) for loading and unloading the workpieces and a closed position ( Figures 6 and 7) for the deep groove rolling process.
  • a retracted position Figure 5
  • a closed position Figures 6 and 7
  • the drive motor 30 is connected to the chuck of the drive stick 20 and can optionally be actuated for rotatingly driving the crankshaft 16 about its axis 32.
  • the pairs of clamp claws are pivotally attached to swing arms 104, 106 which are rotatably attached to the upper support structure provided by frames 108, 110. If the engine rotates the crankshaft for the deep rolling process, oscillate the arms on an arcuate path and the separate pairs of claws follow the circumference of the radially offset crank pin rotation axis 32 to machine and roll the fillets of these crank pins.
  • the rolling pressure is built up by the expansion force of the cylinders 56, 58.
  • deep rolling of circular fillets works on the metallic structure of the fillets to secure the fillets and the crankshaft.
  • Each of the upper tools 68 and 72 carried by upper arms 44, 46 on the left and right sides of the claw units includes a housing which is releasably secured to the upper claw of each arm by fastening units 48, 150.
  • Each housing has a support roller 152, 154 which is seated on needle bearings which are held on centrally aligned hubs 156, 158 arranged between the housing side plates.
  • the hardened fillet rollers e.g. rollers 138, 140 are for rotation about mutually inclined axes A, A 'on the lower sides of the tools by cages such as e.g. Cages 160 and opposing adjustable screws 162 are adjustably attached.
  • the cages have pockets 164 formed therein in which the hardened steel or other suitable material rollers are operably arranged.
  • These fillet rollers touch corresponding annular running surfaces 166, 168 in the support rollers, so that locally limited rolling loads can be exerted on the fillets by the claw arms.
  • the rollers When the crankshaft is rotated by operating the lathe motor, the rollers contact the front pairs of grooves 86, 88 and 90, 92 of the adjacent pins of the crankshaft so that the grooves are rolled under pressure and machined when the crankshaft is rotated.
  • the transverse side loads resulting from the rolling operation with the tools shown in FIG. 2 are offset against one another because the rollers 138, 140 and the rollers 142, 144 in each of the tools have equally large and opposite inclinations.
  • the crankshaft as shown in FIG. 3, has no webs between the angularly offset pins 12 ', 14', only the fillets 86 'and 92' are rolled.
  • a ball bearing unit 170 with a cage is arranged between the housing of the tools 68 ', 72' and enables the opposite side loads resulting from the deep rolling of the adjacent mortise grooves 86 'and 91' to be offset against one another as described in the also co-pending application 176,792 become.
  • the bearing unit 170 is held by one of the tools and engages the side of the other tool so that the side loads caused by the rolling of the adjacent and opposite flutes against each other To get picked up.
  • FIG. 3b shows the overlap (shaded connection surface F) that occurs between the adjacent and angularly offset crank pins 12 and 14 and on the inner grooves 88 and 90 with webs.
  • the fillets 86, 88 and 90, 92 are first rolled with the tool from FIG. 2, preferably with variable rolling pressure, so that the sheet 12 '(dashed line) and 14th '(solid line) of the overlap is rolled at high pressure for deep machining and hardening of the inner grooves 88 and 90 in these areas.
  • the remaining arcuate portions of the inner fillets are rolled at a lower pressure sufficient to leave the webs 94, 96 intact.
  • outer grooves 86 and 92 are then rolled with the tool shown in FIG. 3a, with constant or variable pressure, so that the outer grooves 86 and 92 are completely rolled and fixed.
  • This process can also be reversed, wherein, as shown in FIG. 3a, the outer fillets are first rolled and strengthened, and then the inner fillets 86 and 90 are rolled with variable pressures as described.
  • the machine is shown diagrammatically as a front view, with the crankshaft 16 with radially offset pins inserted into the central lathe, and with the rows 36, 38 of the jaw units from each other and from the crankshaft by operating the drive cylinders 126 , 128 are moved away, the cylinder tubes of which are fastened to the stands 174, 176, which are fastened at their lower ends to the fixed rails 116, 118 and which in turn are fastened to the base plate 124.
  • Middle tool lifting sections 180, 182 of control and counterweight cylinders 184, 186 have fork shoes at their upper ends that are rotatably attached to eyelets that extend from the upper ends of the posts 190, 192 of the upper frames of the left and right Rows of claw units extend and have lower ends that are pivotally attached at 194, 196 to the upper claws 44 and 48.
  • the lifting portions can be selectively actuated to cause the jaws of the jaw units to open so that the crankshaft mounted in the center lathe 16 can be loaded into the rows of the jaw units when the rows move to the rolling position move from Figure 6.
  • the claws of the units are subsequently closed by expanding the cylinders 56, 58, while the tool lifting sections 180, 182 of the control and counterweight units are disabled. Accordingly, the crank pins are gripped by the tools with a force which is low but sufficient to hold the crank shaft against rotation.
  • the actual rolling of the fillets is then started by turning the crankshaft by the motor 30, the force exerted by the rolls on the fillets being increased up to the deep rolling force in that the force exerted by the cylinders 56, 58 on the corresponding claw units increases becomes.
  • the rolling force can be changed during rolling since the crankshaft is driven in rotation until the fillet rolling is finished.
  • the claws and tools follow the circular path of the corresponding pins to be rolled and the connected swing arms swing or swing back and forth along an arc to enable a swinging movement.
  • the control and counterweight cylinders 186, 188 which is rotatably secured between the upper holding structure and the lower claw arms, can have a stroke changing section 196, 198 so that different crankshafts can be rolled with different crank pin positions.
  • the cylinders 186, 188 have additional pneumatic spring counter sections 200, 202.
  • the spring section is similar to a gas spring and serves to smoothly move the arms of the claw units while the fillets are being rolled.
  • Figure 7 is a top view of the left and right rows of pivot arms which roll the offset crank pins shown in dashed lines in the drawing. It can be seen that this arrangement provides the rolling pressure to the claw units required cylinders can be easily used in the machine, since the cylinders and the claw units for adjacent pins are operably mounted on opposite sides of the crankshaft.
  • the left row is for rolling the one set of pins and the right row is for rolling the set of pins adjacent to the first set of pins.
  • the fillet rolling claws of the claw units 216, 218, 220 similar to the disclosed ones have tools such as that in FIG. 2 that can be used to roll the fillets of the main bearings while the trunnion fillets be rolled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP95100046A 1994-05-13 1995-01-03 Laminoir à métaux muni d'ensembles opposés d'unités à machines pour l'usinage d'une pièce centrée et procédé de laminage des gorges circulaires d'une pièce Expired - Lifetime EP0683012B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US242262 1994-05-13
US08/242,262 US5495738A (en) 1994-05-13 1994-05-13 Metal rolling machine with opposing banks of jaw units for working a centered workpiece and method of rolling annular fillets of workpieces

Publications (2)

Publication Number Publication Date
EP0683012A1 true EP0683012A1 (fr) 1995-11-22
EP0683012B1 EP0683012B1 (fr) 1998-08-19

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EP95100046A Expired - Lifetime EP0683012B1 (fr) 1994-05-13 1995-01-03 Laminoir à métaux muni d'ensembles opposés d'unités à machines pour l'usinage d'une pièce centrée et procédé de laminage des gorges circulaires d'une pièce

Country Status (4)

Country Link
US (1) US5495738A (fr)
EP (1) EP0683012B1 (fr)
CA (1) CA2149182C (fr)
DE (1) DE59503228D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0750534A4 (fr) * 1995-01-18 1998-11-18 Hegenscheidt Corp Laminage en profondeur de flancs de raccord arrondis pour manetons dedoubles de vilebrequins
US6666061B2 (en) 2001-05-28 2003-12-23 Hegenscheidt-Mfd Gmbh & Co. Kg Apparatus for deep rolling of recesses and radii of crankshaft journal bearings
US7100413B2 (en) 2002-07-05 2006-09-05 Hegenscheidt-Mfd Gmbh & Co. Kg Deep-rolling roller head

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806184A (en) * 1996-08-21 1998-09-15 Lonero Engineering Company, Inc. Process to manufacture upper work roll products
US5699692A (en) * 1996-10-30 1997-12-23 Lonero Engineering Co., Inc. Tool mechanisms for deep rolling machines
DE19722308C1 (de) * 1997-05-28 1998-04-16 Hegenscheidt Mfd Gmbh Festwalzmaschine für Kurbelwellen
US6272896B1 (en) 1999-12-23 2001-08-14 Daimlerchrysler Corporation Secondary (back-up) roller design for the fillet rolling of the crankshaft
US6253590B1 (en) * 2000-04-25 2001-07-03 Lonero Engineering Company Deep rolling tool mechanism with novel pin supported cage design
US6895793B2 (en) * 2000-11-22 2005-05-24 Ingersoll Cm Systems Llc Apparatus and method for rolling workpieces
US6786073B2 (en) * 2002-08-02 2004-09-07 Ingersoll Cm Systems Llc Apparatus and method for rolling crankshafts having split-pin bearings
DE10357441B3 (de) * 2003-12-09 2005-03-24 Hegenscheidt-Mfd Gmbh & Co. Kg Festwalzrollenkopf für Split-Pin-Kurbelwellen
US7188500B2 (en) * 2004-06-01 2007-03-13 Ingersoll Cm Systems Llc Apparatus and method of rolling split pin crankshafts
US7188497B2 (en) * 2005-04-07 2007-03-13 International Engine Intellectual Property Company, Llc Method for straightening an eccentric shaft
US7588397B2 (en) * 2005-08-31 2009-09-15 Ingersoll Cm Systems Llc Method and apparatus for machining crankshafts or camshafts
DE202006014371U1 (de) * 2006-09-15 2007-03-08 Hegenscheidt-Mfd Gmbh & Co. Kg Festwalzmaschine für Kurbelwellen
CN104191158A (zh) * 2014-08-08 2014-12-10 滨州海得曲轴有限责任公司 一种曲轴滚压装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0461293A1 (fr) * 1990-06-15 1991-12-18 Wilhelm Hegenscheidt Gesellschaft mbH Procédé de galetage respectivement écrouissage de vilebrequins à excentricité différente et machine pour la mise en oeuvre de ce procédé

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3037688C2 (de) * 1980-10-06 1982-12-02 Wilhelm Hegenscheidt, Gmbh, 5140 Erkelenz Verfahren zum Festwalzen von Kurbelwellen
US4870845A (en) * 1986-05-02 1989-10-03 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Working apparatus for crankshaft

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0461293A1 (fr) * 1990-06-15 1991-12-18 Wilhelm Hegenscheidt Gesellschaft mbH Procédé de galetage respectivement écrouissage de vilebrequins à excentricité différente et machine pour la mise en oeuvre de ce procédé

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0750534A4 (fr) * 1995-01-18 1998-11-18 Hegenscheidt Corp Laminage en profondeur de flancs de raccord arrondis pour manetons dedoubles de vilebrequins
US6666061B2 (en) 2001-05-28 2003-12-23 Hegenscheidt-Mfd Gmbh & Co. Kg Apparatus for deep rolling of recesses and radii of crankshaft journal bearings
US7100413B2 (en) 2002-07-05 2006-09-05 Hegenscheidt-Mfd Gmbh & Co. Kg Deep-rolling roller head

Also Published As

Publication number Publication date
CA2149182C (fr) 2001-07-10
EP0683012B1 (fr) 1998-08-19
CA2149182A1 (fr) 1995-11-14
DE59503228D1 (de) 1998-09-24
US5495738A (en) 1996-03-05

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