EP0466547B1 - Crank pins grinding machine - Google Patents

Crank pins grinding machine Download PDF

Info

Publication number
EP0466547B1
EP0466547B1 EP19910401724 EP91401724A EP0466547B1 EP 0466547 B1 EP0466547 B1 EP 0466547B1 EP 19910401724 EP19910401724 EP 19910401724 EP 91401724 A EP91401724 A EP 91401724A EP 0466547 B1 EP0466547 B1 EP 0466547B1
Authority
EP
European Patent Office
Prior art keywords
machine according
plane
axis
shell
pin
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.)
Expired - Lifetime
Application number
EP19910401724
Other languages
German (de)
French (fr)
Other versions
EP0466547A1 (en
Inventor
Robert Forest
Jean-Jacques Chiramarios
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0466547A1 publication Critical patent/EP0466547A1/en
Application granted granted Critical
Publication of EP0466547B1 publication Critical patent/EP0466547B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • B24B5/421—Supports therefor

Definitions

  • the invention relates to a machine for grinding crankshaft pins, in particular of internal combustion engines.
  • This machine comprises, mounted on a frame, two workpiece heads in which two workpiece spindles which rotate the crankshaft can rotate synchronously, as well as a sliding grinding wheel head for grinding the crank pins.
  • Each workpiece spindle is provided with a shell to which one of the crankshaft bearings is fixed by a jaw.
  • the shells are dimensioned so that the axis of the crank pins to be ground coincides with the axis of the pins.
  • the crankshaft crankpin grinding machine comprises a frame 1 on which are fixed two workpiece heads 2.
  • a sheath 3 in which a spindle 4 is rotatably mounted; immobilization of the sheath 3 is ensured at one of its ends by four screws 5 a -5 b -5 c -5 d arranged in the same vertical plane and acting in two perpendicular planes, the screws 5a, 5b and 5 c directly, the screw 5 d by means of a lever 6 pivotally mounted at 7 on the spindle holder head 2.
  • These screws make it possible to adjust the position of the sleeves 3 around the points 01 and 02, constituting centers of the ball joint the other end of the sheath.
  • the two pins of axis XX are connected to a drive motor not shown by means of a drive and synchronization shaft 8 which is rotatably mounted in bearings 9 carried by the heads 2 and on each of the ends of which is wedged a pinion 10 engaged with a pinion 11 fixed to the corresponding spindle.
  • a grinding wheel head 12 carrying a grinding wheel spindle 13 and grinding wheels 14 is slidably mounted on the frame 1.
  • a crankshaft 15 of axis Y-Y can be fixed in two shells 16 carried by the pins 4, by jaws 17 which are pivotally mounted at 18 on the corresponding pin and can be actuated by jacks 19.
  • the first dihedral consists of a vertical plane P perpendicular to the axis of the spindle and a vertical plane P1 making the angle ⁇ of the order of 75 ° to 80 ° with the plane P while the other is defined by the plane P and a plane P2 making an angle ⁇ of the order of 75 ° to 80 ° with the plane P and intersecting this plane along an edge A which is horizontal and perpendicular to the axis of symmetry XX of the machine, this plane P2 thus being perpendicular to the plane of symmetry passing through XX of this machine.
  • the P-P2 dihedral precisely determines the position of the shell relative to the plane of symmetry of the machine and the P-P1 dihedral fixes the distance of the shell from this plane; the shell is thus rigorously positioned.
  • Each shell 16 is fixed to the bearing surfaces 20 and 21 of the spindle 4 by screws 22 and 23 screwed into tapped holes 24 and 25 on either side of which there are grooves 26 and 27. These screws have a flat 28 on their threads and the holes 24 and 25 communicate by holes 29 and 30 with a hole 31 which is itself in communication thanks to the play 32 existing between the spindle 4 and the sleeve 3 with a supply pipe in compressed air 33 carried by this sheath.
  • an angular stop 34 on which bears an angular reference indicator of the crankshaft, for example a dish on a dihedron.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Description

L'invention concerne une machine à rectifier les manetons des vilebrequins, notamment de moteurs à explosion.The invention relates to a machine for grinding crankshaft pins, in particular of internal combustion engines.

Cette machine comporte, montées sur un bâti, deux têtes porte-pièce dans lesquelles peuvent tourner de façon synchrone deux broches porte-pièce entraînant le vilebrequin, ainsi qu'une tête coulissante porte-meule pour rectifier les manetons.This machine comprises, mounted on a frame, two workpiece heads in which two workpiece spindles which rotate the crankshaft can rotate synchronously, as well as a sliding grinding wheel head for grinding the crank pins.

Chaque broche porte-pièce est munie d'une coquille sur laquelle est fixé par un mors l'un des paliers du vilebrequin. Les coquilles sont dimensionnées de telle sorte que l'axe des manetons à rectifier coïncide avec l'axe des broches.Each workpiece spindle is provided with a shell to which one of the crankshaft bearings is fixed by a jaw. The shells are dimensioned so that the axis of the crank pins to be ground coincides with the axis of the pins.

Pour modifier la demi-course du vilebrequin, il faut changer la coquille.To modify the half-stroke of the crankshaft, the shell must be changed.

Le document US-A- 3,584,423 décrit une machine à rectifier les manetons des vilebrequins, du type mentionné dans le préambule de la revendication 1. Mais, dans cette machine, chaque coquille a une face extérieure cylindrique en appui sur une portée cylindrique du bâti de sorte qu'elle peut coulisser dans le sens axial et lui est fixée par une vis; sa position dans le sens axial est déterminée par une butée dont la face d'appui est perpendiculaire à l'axe de la portée cylindrique.Document US-A-3,584,423 describes a machine for grinding crankshaft pins, of the type mentioned in the preamble of claim 1. But, in this machine, each shell has a cylindrical outer face resting on a cylindrical surface of the frame of so that it can slide in the axial direction and is fixed to it by a screw; its position in the axial direction is determined by a stop whose bearing face is perpendicular to the axis of the cylindrical seat.

La machine selon l'invention est au contraire caractérisée comme indiqué dans la partie caractérisante de la revendication 1.The machine according to the invention is on the contrary characterized as indicated in the characterizing part of claim 1.

On a décrit ci-après, à titre d'exemple non limitatif, un mode de réalisation de la machine selon l'invention, avec référence aux dessins annexés dans lesquels :

  • La Figure 1 est une vue en coupe par un plan passant par l'axe des broches porte-pièce;
  • La Figure 2 en est une vue en plan partielle;
  • La Figure 3 est une vue en coupe d'un détail à plus grande échelle;
  • La Figure 4 en est une coupe par IV-IV de la Figure 3;
  • La Figure 5 est une vue suivant la flèche F de la Figure 3, la coquille et son mors de maintien étant supposés enlevés;
  • La Figure 6 en est une coupe suivant VI-VI de la Figure 1;
  • La Figure 7 est une vue en perspective schématique montrant le double dièdre de l'une des broches.
An embodiment of the machine according to the invention has been described below, by way of nonlimiting example, with reference to the appended drawings in which:
  • Figure 1 is a sectional view through a plane passing through the axis of the workpiece pins;
  • Figure 2 is a partial plan view;
  • Figure 3 is a sectional view of a detail on a larger scale;
  • Figure 4 is a section through IV-IV of Figure 3;
  • Figure 5 is a view along arrow F of Figure 3, the shell and its holding jaw being assumed removed;
  • Figure 6 is a section along VI-VI of Figure 1;
  • Figure 7 is a schematic perspective view showing the double dihedral of one of the pins.

Telle qu'elle est représentée au dessin, la machine à rectifier les manetons de vilebrequins comprend un bâti 1 sur lequel sont fixées deux têtes porte-pièces 2. Dans chacune de ces têtes 2 est fixé un fourreau 3 dans lequel est montée à rotation une broche 4; l'immobilisation du fourreau 3 est assurée à l'une de ses extrémités par quatre vis 5a-5b-5c-5d disposées dans un même plan vertical et agissant dans deux plans perpendiculaires, les vis 5a, 5b et 5c directement, la vis 5d par l'intermédiaire d'un levier 6 monté pivotant en 7 sur la tête porte-broche 2. Ces vis permettent de régler la position des fourreaux 3 autour des points 01 et 02, constituant des centres de rotule à l'autre extrémité du fourreau.As shown in the drawing, the crankshaft crankpin grinding machine comprises a frame 1 on which are fixed two workpiece heads 2. In each of these heads 2 is fixed a sheath 3 in which a spindle 4 is rotatably mounted; immobilization of the sheath 3 is ensured at one of its ends by four screws 5 a -5 b -5 c -5 d arranged in the same vertical plane and acting in two perpendicular planes, the screws 5a, 5b and 5 c directly, the screw 5 d by means of a lever 6 pivotally mounted at 7 on the spindle holder head 2. These screws make it possible to adjust the position of the sleeves 3 around the points 01 and 02, constituting centers of the ball joint the other end of the sheath.

Les deux broches d'axe X-X sont reliées à un moteur d'entraînement non représenté par l'intermédiaire d'un arbre d'entraînement et de synchronisation 8 qui est monté à rotation dans des paliers 9 portés par les têtes 2 et sur chacune des extrémités duquel est calé un pignon 10 en prise avec un pignon 11 fixé à la broche correspondante. Une tête porte-meule 12 portant une broche porte-meule 13 et des meules 14 est montée coulissante sur le bâti 1.The two pins of axis XX are connected to a drive motor not shown by means of a drive and synchronization shaft 8 which is rotatably mounted in bearings 9 carried by the heads 2 and on each of the ends of which is wedged a pinion 10 engaged with a pinion 11 fixed to the corresponding spindle. A grinding wheel head 12 carrying a grinding wheel spindle 13 and grinding wheels 14 is slidably mounted on the frame 1.

Un vilebrequin 15 d'axe Y-Y peut être fixé dans deux coquilles 16 portées par les broches 4, par des mors 17 qui sont montés pivotants en 18 sur la broche correspondante et peuvent être actionnés par des vérins 19.A crankshaft 15 of axis Y-Y can be fixed in two shells 16 carried by the pins 4, by jaws 17 which are pivotally mounted at 18 on the corresponding pin and can be actuated by jacks 19.

Chacune des coquilles 16 repose sur sa broche 4 par l'intermédiaire de deux dièdres. Le premier dièdre est constitué par un plan vertical P perpendiculaire à l'axe de la broche et par un plan vertical P1 faisant l'angle α de l'ordre de 75° à 80° avec le plan P alors que l'autre est défini par le plan P et un plan P2 faisant un angle β de l'ordre de 75° à 80° avec le plan P et coupant ce plan suivant une arête A qui est horizontale et perpendiculaire à l'axe de symétrie X-X de la machine, ce plan P2 étant ainsi perpendiculaire au plan de symétrie passant par X-X de cette machine. Le dièdre P-P2 détermine de manière précise la position de la coquille par rapport au plan de symétrie de la machine et le dièdre P-P1 fixe la distance de la coquille par rapport à ce plan; la coquille est ainsi positionnée de manière rigoureuse.Each of the shells 16 rests on its pin 4 by means of two dihedrons. The first dihedral consists of a vertical plane P perpendicular to the axis of the spindle and a vertical plane P1 making the angle α of the order of 75 ° to 80 ° with the plane P while the other is defined by the plane P and a plane P2 making an angle β of the order of 75 ° to 80 ° with the plane P and intersecting this plane along an edge A which is horizontal and perpendicular to the axis of symmetry XX of the machine, this plane P2 thus being perpendicular to the plane of symmetry passing through XX of this machine. The P-P2 dihedral precisely determines the position of the shell relative to the plane of symmetry of the machine and the P-P1 dihedral fixes the distance of the shell from this plane; the shell is thus rigorously positioned.

Chaque coquille 16 est fixée sur les surfaces d'appui 20 et 21 de la broche 4 par des vis 22 et 23 vissées dans des trous taraudés 24 et 25 de part et d'autre desquels se trouvent des gorges 26 et 27. Ces vis ont un plat 28 sur leur filetage et les trous 24 et 25 communiquent par des perçages 29 et 30 avec un perçage 31 qui est lui-même en communication grâce au jeu 32 existant entre la broche 4 et le fourreau 3 avec un tuyau d'alimentation en air comprimé 33 porté par ce fourreau.Each shell 16 is fixed to the bearing surfaces 20 and 21 of the spindle 4 by screws 22 and 23 screwed into tapped holes 24 and 25 on either side of which there are grooves 26 and 27. These screws have a flat 28 on their threads and the holes 24 and 25 communicate by holes 29 and 30 with a hole 31 which is itself in communication thanks to the play 32 existing between the spindle 4 and the sleeve 3 with a supply pipe in compressed air 33 carried by this sheath.

Lors du serrage d'une nouvelle coquille 16, juste avant son contact avec la broche 4, l'air provenant du tuyau 33 s'échappe par les trous 24 et 25 et nettoie les surfaces d'appui 20 et 21.When tightening a new shell 16, just before it comes into contact with the spindle 4, the air coming from the pipe 33 escapes through the holes 24 and 25 and cleans the bearing surfaces 20 and 21.

Sur l'une des deux coquilles 16 est fixée une butée angulaire 34 sur laquelle vient en appui un témoin de référence angulaire du vilebrequin, par exemple un plat sur un dièdre.On one of the two shells 16 is fixed an angular stop 34 on which bears an angular reference indicator of the crankshaft, for example a dish on a dihedron.

Claims (8)

  1. Machine for grinding the crank pins of crankshafts and including mounted on a frame (1) a sliding grinding wheel carrier head (12) and two fixed part carrier heads (2) in which two part carrier pins (4) rotate synchronously, each pin being provided with a shell (16) secured to one of the bearings of the crankshaft (15) with the aid of a jaw (17) so that the spin axis of the pin coincides with the axis of the crank pins to be ground,
    wherein each shell (16) is marked with respect to the corresponding pin (4) enclosing of a double dihedral with acute angles P-P1 and P-P2, one of these dihedrals being defined by a vertical plane P perpendicular to the axis X-X of the pin (4) and by a second vertical plane P1, whereas the other dihedral is defined by the plane P and a plane P2 slanted with respect to horizontal and perpendicular to the plane of symmetry passing through the axis X-X of the machine.
  2. Machine according to claim 1,
    wherein the angle of each of the dihedrals is between 75° and 80°.
  3. Machine according to claim 1 or 2,
    wherein at least one of the shells (16) bears an angular stop (34) on which the crankshaft (15) takes support.
  4. Machine according to any one of claims 1 to 3,
    characterized by an internal pneumatic circuit opening onto the support surfaces (20 and 231) provided on the pin for the shell.
  5. Machine according to claim 4,
    wherein each shell (16) is secured to the support surfaces (20 and 21) by screws (22 and 23) screwed into tapped holes (24 and 25) through which the pneumatic circuit opens.
  6. Machine according to claim 5,
    wherein throats (26 and 27) extend on both sides of the holes (24 and 25).
  7. Machine according to any one of the preceding claims,
    wherein it comprises sheaths (3) with adjustable orientation in which the pins (4) are rotary-mounted.
  8. Machine according to claim 7,
    wherein one of the ends of each sheath (3) is fixed to the corresponding head (2) by a set of screws (5a, 5b, 5c, 5d) disposed in a given plane perpendicular to the axis of the head.
EP19910401724 1990-07-09 1991-06-26 Crank pins grinding machine Expired - Lifetime EP0466547B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009066A FR2664192B1 (en) 1990-07-09 1990-07-09 MACHINE FOR GRINDING CRANKSHAFT CRANKS.
FR9009066 1990-07-09

Publications (2)

Publication Number Publication Date
EP0466547A1 EP0466547A1 (en) 1992-01-15
EP0466547B1 true EP0466547B1 (en) 1994-09-21

Family

ID=9398779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910401724 Expired - Lifetime EP0466547B1 (en) 1990-07-09 1991-06-26 Crank pins grinding machine

Country Status (4)

Country Link
EP (1) EP0466547B1 (en)
JP (1) JPH04226855A (en)
DE (1) DE69104152T2 (en)
FR (1) FR2664192B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1158527A (en) * 1967-05-30 1969-07-16 Newall Eng Improvements in Crankpin Grinders
GB1427923A (en) * 1972-03-09 1976-03-10 Landis Lund Ltd Chuck assemblies
FR2430292A1 (en) * 1978-07-07 1980-02-01 Clichy Const Sa FOUR CRANKSHAFT SUPPORT DEVICE ON GRINDING MACHINE
FR2623741B1 (en) * 1987-11-26 1990-04-27 Peugeot CRANKSHAFT CROSSBAR RECTIFICATION ASSEMBLY

Also Published As

Publication number Publication date
FR2664192B1 (en) 1992-10-02
DE69104152T2 (en) 1995-04-13
JPH04226855A (en) 1992-08-17
FR2664192A1 (en) 1992-01-10
EP0466547A1 (en) 1992-01-15
DE69104152D1 (en) 1994-10-27

Similar Documents

Publication Publication Date Title
WO1989011374A1 (en) Multifunctional machine-tool for complex machining of long pieces
FR2587924A1 (en) DEVICE FOR INTERNAL MACHINING OF A TUBE
CA2041977A1 (en) Valve head rectifying device, particularly for an internal combustion engine
FR2487718A1 (en) PLATE TRANSFER DIPOSITIVE CASTER FOR MACHINE TOOL
EP0325548A1 (en) Rotary mower equipped with cutting elements mounted above a housing by means of guiding and driving bearings
EP0010043A1 (en) Revolving constrainment device for flat workpieces mounted on one of the working parts of a machine tool
EP0466547B1 (en) Crank pins grinding machine
EP0700795B1 (en) Device for marking, to get identification signs in two dimensions on the surface of an object
FR2655896A1 (en) Variable-configuration multi-spindle machining head
FR2539346A1 (en) AUTOMATIC MANIPULATOR DEVICE ARTICULATED IN PARTICULAR FOR ARC WELDING
CA1245478A (en) Vibratory tool-holder assembly
EP0869858B1 (en) Machining unit with rotating head
EP0262048B1 (en) Device for automatically lapping the electrodes of welding robots
FR2726215A1 (en) HOLDER OF VANISHED KEY SIZES
EP0174306B1 (en) Tooling for clamping and guiding round parts
EP0318353B1 (en) Grinding arrangement for the crankpins of a crankshaft
FR2479064A1 (en) TWO-STEP CAMSHAFT MACHINING MACHINE BY PRECISION CORRECTION
EP0627969B1 (en) Hopping method and device by means of a milling knife
FR2564358A1 (en) Gripper with a cam.
FR2537247A1 (en) Anti-screwing corrector device, for a turning device for boiler construction.
FR2707912A1 (en) Gripper device fixed to the end of a robot for gripping flat or not very curved motor vehicle components
EP0263734A1 (en) Rocker arm arrangement on an internal-combustion engine cylinder head
FR2694715A1 (en) Method and apparatus for rectifying crank pin cranks
FR2589767A1 (en) Automatic lapping (honing) apparatus for welding robots
FR2521049A1 (en) DEVICE FOR ACTING ON THE RELATIVE POSITION OF TWO COUPLED ELEMENTS OF A MACHINE TOOL

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

17P Request for examination filed

Effective date: 19911125

17Q First examination report despatched

Effective date: 19930330

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT

ITF It: translation for a ep patent filed

Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

REF Corresponds to:

Ref document number: 69104152

Country of ref document: DE

Date of ref document: 19941027

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19941010

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000607

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000830

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010626

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050626