EP0170764A1 - Grinding machine for crankshafts of diesel or internal-combustion engines - Google Patents

Grinding machine for crankshafts of diesel or internal-combustion engines Download PDF

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Publication number
EP0170764A1
EP0170764A1 EP85102233A EP85102233A EP0170764A1 EP 0170764 A1 EP0170764 A1 EP 0170764A1 EP 85102233 A EP85102233 A EP 85102233A EP 85102233 A EP85102233 A EP 85102233A EP 0170764 A1 EP0170764 A1 EP 0170764A1
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EP
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Prior art keywords
grinding
grinding machine
wheels
carriage
plane
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Granted
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EP85102233A
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German (de)
French (fr)
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EP0170764B1 (en
Inventor
Luciano Barbisan
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Barbisan Luciano
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Barbisan Luciano
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00Means for securing grinding wheels on rotary arbors
    • B24B45/003Accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36Single-purpose machines or devices
    • B24B5/42Single-purpose machines or devices for grinding crankshafts or crankpins

Definitions

  • the present invention relates to grinding machines for crankshafts of engines, both diesel and explosion.
  • Machine tools of this type are provided with a series of grinding wheels placed side by side which are arranged on a single grinding wheel shaft and which thus make it possible to machine the bearings of the bench as well as the crank pins.
  • the main object of the present invention is that of making a multiple grinder for crankshafts having a higher precision obtained by simplifying the movements of the machine.
  • Another object is that of carrying out the operation of preparing the machine in an extremely simple manner, therefore feasible in reduced time, in minimal spaces and without lifting means, in such a way that the replacement of the grinding stones is less costly. rectification.
  • the main purpose has been achieved by providing that the part to be rectified is arranged, not on the horizontal diametral plane of the grinding wheels, but in a position such as to form with this an angle between 10 and 60 °, preferably an angle of about 30 °, so that all the movements can be controlled by a single stepping motor.
  • the grinding wheel or grinding wheels for dressing are also arranged not facing the horizontal diametral plane of the grinding wheels, but displaced by a certain angle relative to said plane, in particular by an equal angle, but opposite to that formed by the part with said horizontal plane.
  • This position of the workpiece and the dressing wheel allows these two operations to be carried out by a single kinematic chain and therefore by a single stepping motor. In this way the influences of the ambient temperature and the inaccuracies of the multiple movements are eliminated, obtaining greater precision and a significantly better surface finish than that which can be obtained by current machines.
  • a specific embodiment provides that one of the supports of the grinding wheel shaft is slidably mounted and that there is provided, on the grinding machine itself or next to it, a special carriage having an arm on which slide at minus two grinding wheels which can be removed little by little without the need to dismantle the entire grinding wheel shaft.
  • the machine shown in the figures is provided with a certain number of grinding wheels M1, M2, M3, M4, M5, which are as much as the bearings to be ground, so that the crankshaft is ground by a single operation.
  • Each grinding wheel is mounted and balanced separately with its flanges 4 before being introduced, by means of the carriage 7, onto the grinding wheel shaft 5 which is fixed to the table 6 and by means of its supports 1 and 2.
  • the machine is provided with two workpiece heads 13A and 14A which rotate the two points 13 and 14, which are synchronized by the shaft 15.
  • the dressing roller 16 forms with the above plane an angle ⁇ preferably equal to the previous angle, but in opposite directions.
  • Each support is provided with special hydrostatic or hydrodynamic type bearings in which are housed and rotate the two ends of the grinding wheel shaft 5, which are covered by a removable cover 18.
  • each support has a hydraulic control unit with a circulation pump, filter and oil cooling.
  • Each support is therefore completely independent of the rest of the machine and can be moved and adjusted without any loss of oil, even when the cover 18 is removed, so as to release one end of the grinding wheel shaft 5.
  • the support 1 is always fixed on the table 6 of the grinding machine, while the support 2 can be moved in the direction of the arrow A by taking the position 2 'indicated in FIG. 3, so as to allow free passage to the grinding wheels M1, M2, M3, M4, M5, when these are removed from the grinding wheel shaft 5.
  • a carriage 7 is specially provided for transporting the disassembled grinding wheels to the preparation workshop for the grinding machine.
  • This carriage 7 is provided with an arm 23 on which the different grinding wheels from N1 to M5 slide during assembly and disassembly.
  • This arm is provided with a conical projection 21 which enters a cavity provided in the shaft 5, so as to be able to support it.
  • the carriage 19 is also provided with locking screws 25 actuated by the handwheel 19 which are intended to penetrate the table 6.
  • the disassembly of the series of grinding wheels from M1 to M5 for their replacement is carried out as follows: First of all, the cover 18 of the support 2 is dismantled, while the carriage 7 is approached so that the conical part 21 of the arm 23 enters the end of the grinding wheel shaft 5. By means of the flywheel 19 the carriage 7 is rigidly locked against the table 6 of the machine.
  • the support 2 is now moved away from its seat, which moves to the position 2 ′ (FIG. 3), thereby keeping the shaft 5 and the arm 23 supported by the hydraulic piston 27 placed on the carriage 7.
  • the movement of the grinding wheels M1, M2, M3, M4, M5, the displacement of the support 2, that of the hydraulic piston 27, as well as of the carriage 7 are preferably motorized, so that the operations follow until when all of them have been dismantled. the grindstones.
  • the mounting of the grinding wheels M1, M2, M3, M4 and M5 on the shaft 5 is carried out in reverse but identical manner.
  • the movement of the table 6 which carries the group of grinding wheels is carried out by a single stepping motor 10 by means of a reduction gear 11 and of the group 9 containing a high-precision ball screw which allows advance half micron each time the engine is started (see Fig. 1).
  • Fig. 1 the grinding wheels are at a certain distance either from the axis of the workpiece to be that of the axis of the dressing wheel.
  • This distance is adjustable to allow easy assembly and disassembly of the crankshaft at a speed so as not to cause loss of time.
  • the amount of finishing of the different plans or supports is obtained by the autocalibration fork controlled by the electronic measuring device.
  • the regeneration thickness of the grinding wheels is obtained by increasing the value of the grinding stroke by a few hundredths each time this operation is carried out which can be carried out every 10 or 15 pieces.
  • the diamond roller withdraws under its protection which shelters it from the emery; it can be composed by different elements as much as the seats to be ground or by a single roller brought back on a carriage 20 which allows it to move along the entire length of the positions of different grinding wheels.
  • All the motors of the machine have adjustable speeds to obtain the desired results, while a computer controls the various movements of the machine and of the carriage 7 so as to obtain very high yields.

Abstract

The crankshaft grinder for diesel or petrol engines has the axis of the crankshaft (13,14) clear of the horizontal plane (- P) passing diametrally through the grinder wheel shaft (5). Instead, it is in a plane such as to form an angle alpha with this plane of between 10 and 60 deg., preferably 30 deg. The dressing wheels (16) for the grinder wheels can also be in a plane similarly inclined, but in the opposite direction (B).

Description

La présente invention a trait aux rectifieuses pour des vilebrequins de moteurs, aussi bien diesel, qu'à explosion. Les machines outils de ce type sont munies d'une série de meules placées côté à côté qui sont disposées sur un arbre porte-meule unique et qui permettent ainsi d'une seule fois l'usinage des paliers de banc aussibien que des manetons.The present invention relates to grinding machines for crankshafts of engines, both diesel and explosion. Machine tools of this type are provided with a series of grinding wheels placed side by side which are arranged on a single grinding wheel shaft and which thus make it possible to machine the bearings of the bench as well as the crank pins.

Dans ce type de rectifieuses une précision très élevée est très importante. Celle-ci est empêchée par la complexité même de la machine outil, c'est-à-dire par ses mouvements multiples, aussi bien que par l'influence de la température ambiante.In this type of grinding machine very high precision is very important. This is prevented by the very complexity of the machine tool, that is to say by its multiple movements, as well as by the influence of the ambient temperature.

Sur les machines connues de ce type il existe aussi le problème de devoir monter et déronter frequermment les différentes meules de l'arbre porte-meules. Pour faire cela, on emploie, normalement, une grue qui soulève l'arbre porte-meule avec ses meules, après que les deux supports, qui soutinnent l'arbre, ont été ouverts, ensuite la grue dépose l'arbre porte-meule sur un chariot convenable, qui pourvoit à son éloignement, tandis qu'un second chariot pourvoit à porter "in loco" un nouvel arbre porte-meules, qui sera ensuite soulevé et placé sur la rectifieuse. Cette façon de procéder présente de différents désavantages: avant tout, elle présuppose la présence d'une grue lourde, deuxièmement elle requière un espace remarquable autour de la rectifieuse, aussi bien pour les opérations de la grue que pour les manoeuvres du chariot ou des chariots auxiliaires pour le transport: enfin toutes ces opérations sont très longues, donc elles causent de longs arrêts de la machine.On known machines of this type there is also the problem of having to frequently mount and unmount the different grinding wheels. the grinding wheel shaft. To do this, we normally use a crane that lifts the grinding wheel shaft with its grinding wheels, after the two supports, which support the shaft, have been opened, then the crane deposits the grinding wheel shaft on a suitable trolley, which provides for its distance, while a second trolley provides for carrying "in loco" a new grinding wheel shaft, which will then be lifted and placed on the grinding machine. This way of proceeding presents various disadvantages: first of all, it presupposes the presence of a heavy crane, secondly it requires a remarkable space around the grinding machine, as well for the operations of the crane as for the operations of the trolley or the trolleys auxiliary for transport: finally all these operations are very long, so they cause long stops of the machine.

Le but principal de la présente invention est celui de réaliser une rectifieuse multiple pour vilebrequins ayant une précision plus élevée obtenue par une simplification des mouvements de la machine.The main object of the present invention is that of making a multiple grinder for crankshafts having a higher precision obtained by simplifying the movements of the machine.

Un autre but est celui de réaliser l'opération de préparation de la machine de façon extrêmement simple, donc faisable en temps réduit, dans des espaces minimales et sans moyens de soulèvement, de telle manière que le remplacement des meules grave moins sur les coûts de rectification.Another object is that of carrying out the operation of preparing the machine in an extremely simple manner, therefore feasible in reduced time, in minimal spaces and without lifting means, in such a way that the replacement of the grinding stones is less costly. rectification.

Le but principal a été atteint en prévoyant que la pièce à .rectifier soit disposée, non pas sur le plan diamétral horizontal des meules rectifieuses, mais dans une position telle à former avec celui-ci un angle compris entre 10 et 60°, de préférence un angle d'environ 30°, de manière que tous le mouvements puissent être commandés par un unique moteur pas à pas.The main purpose has been achieved by providing that the part to be rectified is arranged, not on the horizontal diametral plane of the grinding wheels, but in a position such as to form with this an angle between 10 and 60 °, preferably an angle of about 30 °, so that all the movements can be controlled by a single stepping motor.

De préférence on prévoit en outre que la meule ou les meules pour le dressage soient disposées elles aussi non pas en regard du plan diamétral horizontal des meules, mais déplacées d'un certain angle par rapport audit plan, en particulier d'un angle égal, mais opposé à celui formé par la pièce avec ledit plan horizontal.Preferably, it is further provided that the grinding wheel or grinding wheels for dressing are also arranged not facing the horizontal diametral plane of the grinding wheels, but displaced by a certain angle relative to said plane, in particular by an equal angle, but opposite to that formed by the part with said horizontal plane.

Cette position de la pièce à rectifier et de la meule de dressage permet de réaliser ces deux opérations par une seule chaîne cinématique et donc par un seul moteur pas à pas. De cette façon les influences de la température ambiante et les imprécisions des mouvements multiples sont éliminés en obtenant une plus grande précision et un finissage des surfaces nettement meilleur que celui qu'on peut obtenir par des machines actuelles.This position of the workpiece and the dressing wheel allows these two operations to be carried out by a single kinematic chain and therefore by a single stepping motor. In this way the influences of the ambient temperature and the inaccuracies of the multiple movements are eliminated, obtaining greater precision and a significantly better surface finish than that which can be obtained by current machines.

Une réalisation spécifique prévoit qu'un des supports de l'arbre porte-meule soit monté de manière coulissante et qu'il soit prévu, sur la rectifieuse même ou à côté de celle-ci, un chariot spécial ayant un bras sur lequel coulissent au moins deux meules qui petit à petit peuvent être faites sortir sans qu'il soit nécessaire de démonter tout l'arbre porte-meule.A specific embodiment provides that one of the supports of the grinding wheel shaft is slidably mounted and that there is provided, on the grinding machine itself or next to it, a special carriage having an arm on which slide at minus two grinding wheels which can be removed little by little without the need to dismantle the entire grinding wheel shaft.

L'invention sera maintenant mieux expliquée d'après un exemple de réalisation qui a été représenté sur les figures annexées, sur lesquelles :

  • la Figure 1 est une vue latérale de la rectifieuse proposée à capot ouvert;
  • la Figure 2 est une vue latérale tournée de 90° par rapport à la Figure 1; et
  • la Figure 3 est une vue du haut de la même rectifieuse.
The invention will now be better explained from an exemplary embodiment which has been shown in the appended figures, in which:
  • Figure 1 is a side view of the proposed grinding machine with open cover;
  • Figure 2 is a side view rotated 90 ° relative to Figure 1; and
  • Figure 3 is a top view of the same grinder.

La machine représentée sur les figures est munie d'un certain nombre de meules rectifieuses M1, M2, M3, M4, M5, qui sont autant que les paliers à rectifier, de telle façon que la rectification du vilebrequin soit réalisée par une seule opération. Chaque meule est montée et équilibrée séparemment avec ses brides 4 avant d'être introduite, au moyen du chariot 7, sur l'arbre porte-meules 5 qui est fixé sur la table 6 et au moyen de ses supports 1 et 2.The machine shown in the figures is provided with a certain number of grinding wheels M1, M2, M3, M4, M5, which are as much as the bearings to be ground, so that the crankshaft is ground by a single operation. Each grinding wheel is mounted and balanced separately with its flanges 4 before being introduced, by means of the carriage 7, onto the grinding wheel shaft 5 which is fixed to the table 6 and by means of its supports 1 and 2.

La machine est munie de deux têtes porte-pièces 13A et 14A qui font tourner les deux pointes 13 et 14, qui sont synchronisées par l'arbre 15.The machine is provided with two workpiece heads 13A and 14A which rotate the two points 13 and 14, which are synchronized by the shaft 15.

Le plan diamétral P-P horizontal passant par le centre de chaque meule M1, M2, M3, M4 et M5', forme un angle α compris entre 10° et 60° avec la ligne droite qui unit le centre de la meule rectifieuse avec le centre formant l'axe de rotation de la pièce. Le rouleau de dressage 16 forme avec le susdit plan un angle β de préférence égal à l'angle précédent, mais de sens opposé.The horizontal diametral plane PP passing through the center of each grinding wheel M1, M2, M3, M4 and M5 ', forms an angle α between 10 ° and 60 ° with the straight line which unites the center of the grinding wheel with the forming center the axis of rotation of the part. The dressing roller 16 forms with the above plane an angle β preferably equal to the previous angle, but in opposite directions.

Chaque support est prévu de paliers spéciaux de type hydrostatique ou hydrodynamique dans lesquels sont logés et tournent les deux extrémités de l'arbre porte-meule 5, qui sont couvertes par un couvercle amovible 18. Dans la partie inférieure, chaque support comporte un groupe de commande hydraulique avec une pompe de circulation, filtre et refroidissement à huile. Chaque support est donc complètement indépendant du reste de la machine et peut être déplacé et réglé sans aucune perte d'huile, même quand on démcnte le couvercle 18, de manière à libérer une extrémité de l'arbre porte-meule 5. Le support 1 est toujours fixé sur la table 6 de la rectifieuse, tandis que le support 2 peut être déplacé dans le sens de la flèche A en prenant la position 2' indiquée par la Fig. 3, de façon à laisser libre le passage aux meules M1, M2, M3, M4, M5, lorsque celles-ci sont retirées de l'arbre porte-meule 5.Each support is provided with special hydrostatic or hydrodynamic type bearings in which are housed and rotate the two ends of the grinding wheel shaft 5, which are covered by a removable cover 18. In the lower part, each support has a hydraulic control unit with a circulation pump, filter and oil cooling. Each support is therefore completely independent of the rest of the machine and can be moved and adjusted without any loss of oil, even when the cover 18 is removed, so as to release one end of the grinding wheel shaft 5. The support 1 is always fixed on the table 6 of the grinding machine, while the support 2 can be moved in the direction of the arrow A by taking the position 2 'indicated in FIG. 3, so as to allow free passage to the grinding wheels M1, M2, M3, M4, M5, when these are removed from the grinding wheel shaft 5.

On prévoit en outre un chariot 7 spécialement destiné à transporter les meules démontées à l'atelier de préparation à la rectifieuse. Ce chariot 7 est muni d'un bras 23 sur lequel coulissent les différent'es meules de N1 à M5 pendant le montage et le démontage. Ce bras est muni d'une saillie conique 21 qui pénètre dans une cavité prévue dans l'arbre 5, de façon à pouvoir le supporter. Le chariot 19 est en outre pourvu de vis de blocage 25 actionnées par le volant 19 qui sont destinées à pénétrer dans la table 6.In addition, a carriage 7 is specially provided for transporting the disassembled grinding wheels to the preparation workshop for the grinding machine. This carriage 7 is provided with an arm 23 on which the different grinding wheels from N1 to M5 slide during assembly and disassembly. This arm is provided with a conical projection 21 which enters a cavity provided in the shaft 5, so as to be able to support it. The carriage 19 is also provided with locking screws 25 actuated by the handwheel 19 which are intended to penetrate the table 6.

Le démontage de la série de meules de M1 à M5 pour leur remplacement se réalise de la façon suivante: On démonte tout d'abord le couvercle 18 du support 2, tandis qu'on approche le chariot 7 de sorte que la partie conique 21 du bras 23 pénètre dans l'extrémité de l'arbre porte-meules 5. Au moyen du volant 19 le chariot 7 est bloqué rigidement contre la table 6 de la machine.The disassembly of the series of grinding wheels from M1 to M5 for their replacement is carried out as follows: First of all, the cover 18 of the support 2 is dismantled, while the carriage 7 is approached so that the conical part 21 of the arm 23 enters the end of the grinding wheel shaft 5. By means of the flywheel 19 the carriage 7 is rigidly locked against the table 6 of the machine.

On éloigne maintenant de son siège le support 2 qui se déplace à la position 2' (Fig. 3) en faisant ainsi rester l'arbre 5 et le bras 23 supportés par le piston hydraulique 27 placé sur le chariot 7.The support 2 is now moved away from its seat, which moves to the position 2 ′ (FIG. 3), thereby keeping the shaft 5 and the arm 23 supported by the hydraulic piston 27 placed on the carriage 7.

Le mouvement des meules M1 , M2, M3, M4, M5, le déplacement du support 2, celui du piston hydraulique 27, ainsi que du chariot 7 sont de préférence motorisés, de manière que les opérations suivent jusqu'à quand on aura démontées toutes les meules.The movement of the grinding wheels M1, M2, M3, M4, M5, the displacement of the support 2, that of the hydraulic piston 27, as well as of the carriage 7 are preferably motorized, so that the operations follow until when all of them have been dismantled. the grindstones.

Le montage des meules M1, M2, M3, M4 et M5 sur l'arbre 5 se réalise de manière inverse mais identique.The mounting of the grinding wheels M1, M2, M3, M4 and M5 on the shaft 5 is carried out in reverse but identical manner.

Le mouvement de la table 6 qui porte le groupe de meules est effectué par un unique moteur pas à pas 10 par l'intermédiaire d'un,réducteur 11 et du groupe 9 contenant une vis à circulation de billes de grande précision qui permet une avance de demi micron à chaque déclenchement du moteur (voir la Fig. 1).The movement of the table 6 which carries the group of grinding wheels is carried out by a single stepping motor 10 by means of a reduction gear 11 and of the group 9 containing a high-precision ball screw which allows advance half micron each time the engine is started (see Fig. 1).

Sur la Fig. 1 les meules se trouvent à une certaine distance soit de l'axe de la pièce à rectifier que de l'axe de la meule de dressage.In Fig. 1 the grinding wheels are at a certain distance either from the axis of the workpiece to be that of the axis of the dressing wheel.

Cette distance est reglable pour permettre un montage et un démontage facile du vilebrequin à une vitesse telle à ne pas provoquer des pertes de temps.This distance is adjustable to allow easy assembly and disassembly of the crankshaft at a speed so as not to cause loss of time.

Cette avance et éloignement rapide de la table 6 se réalise au moyen du groupe 12 réglable de façon mécanique et hydraulique.This rapid advancement and removal from the table 6 is achieved by means of the group 12 which is adjustable mechanically and hydraulically.

La quote di finissage des différents plans ou supports est obtenue par la fourche d'autocalibrage commandée par le dispositif électronique de mesure.The amount of finishing of the different plans or supports is obtained by the autocalibration fork controlled by the electronic measuring device.

L'épaisseur de régénération des meules est obtenu en augmentant la valeur de la course de rectification de quelque centième chaque fois qu'on procède à cette opération qui peut être réalisée tous les 10 ou 15 pièces.The regeneration thickness of the grinding wheels is obtained by increasing the value of the grinding stroke by a few hundredths each time this operation is carried out which can be carried out every 10 or 15 pieces.

Pendant le temps de rectification le rouleau diamantée (vcir la Fig. 1) se retire sous sa protection qui l'abrite de l'émeri; il peut être composée par de différents éléments autant que les sièges à rectifier ou bien par un seul rouleau ramené sur un chariot 20 qui lui permet de se déplacer le long de toute la longueur des positions de différents meules.During the rectification time the diamond roller (see Fig. 1) withdraws under its protection which shelters it from the emery; it can be composed by different elements as much as the seats to be ground or by a single roller brought back on a carriage 20 which allows it to move along the entire length of the positions of different grinding wheels.

Tous les moteurs de la machine ont des vitesses réglables pour obtenir les résultats désirés, tandis qu'un ordinateur commande les différents mouvements de la machine et du chariot 7 de manière à obtenir des rendements très élevés.All the motors of the machine have adjustable speeds to obtain the desired results, while a computer controls the various movements of the machine and of the carriage 7 so as to obtain very high yields.

Claims (6)

1. Rectifieuse pour vilebrequins, caractérisée en ce que l'axe de la pièce à rectifier est placé non pas sur le plan diamétral (P-P) horizontal des meules rectifieuses (M1 à M5), mais à une position telle à former avec celui un angle (α) compris entre 10 et 60°, de préférence un angle d'environ 30°.1. Grinding machine for crankshafts, characterized in that the axis of the part to be rectified is placed not on the horizontal diametral plane (PP) of the grinding wheels (M1 to M5), but in a position such as to form with that an angle (α) between 10 and 60 °, preferably an angle of about 30 °. 2. Rectifieuse selon la revendication 1, caractérisée en ce que le ou les rouleaux de dressage (16) sont placées eux-aussi non pas en regard du plan diamétral (P-P) horizontal des meules, mais déplacés d'un certain angle (β) par rapport audit plan, en particulier d'un angle égal ou similaire à celui formé par l'axe de la pièce avec le même plan (P-P), mais en direction opposée.2. Grinding machine according to claim 1, characterized in that the dressing roller (s) (16) are also placed not opposite the horizontal diametral plane (PP) of the grinding wheels, but displaced by a certain angle (β) with respect to said plane, in particular an angle equal to or similar to that formed by the axis of the part with the same plane (PP), but in the opposite direction. 3. Rectifieuse selon la revendication 1, caractérisée en ce que l'un (2) des supports (1, 2) de l'arbre porte-meule (5) est monté de façon coulissante pour permettre le défilement des meules de l'arbre (5) de la machine.3. Grinding machine according to claim 1, characterized in that one (2) of the supports (1, 2) of the grinding wheel shaft (5) is slidably mounted to allow the grinding wheels of the shaft to run. (5) of the machine. 4. Rectifieuse selon la revendication 3, caractérisée en ce qu'on prévoit aussi un chariot (7) muni d'un bras (23) destiné à recevoir les meules.4. Grinding machine according to claim 3, characterized in that there is also provided a carriage (7) provided with an arm (23) intended to receive the grinding wheels. 5. Rectifieuse selon la revendication 4, caractérisée en ce que le bras (23) se place coaxialement à l'arbre porte-meule (5), en particulier il présente un moyen de ajustage conique (21).5. Grinding machine according to claim 4, characterized in that the arm (23) is positioned coaxially with the grinding wheel shaft (5), in in particular, it has a conical adjustment means (21). 6. Rectifieuse selon la revendication 5, caractérisée en ce qu'on prévoit un support, en particulier un piston (27) pour le bras (23) du chariot (7), de façon que lorsque le meules (M1 , M2, M3, M4, M5) sont enlevées de l'arbre porte-meules et enfilées sur le bras (23) du chariot (7), celui-ci, supporté par le piston hydraulique (27), peut être dégagé de la table (6) de la machine au moyen du volant (19) et dirigé à l'atelier de préparation des meules.6. Grinding machine according to claim 5, characterized in that a support is provided, in particular a piston (27) for the arm (23) of the carriage (7), so that when the grinding wheels (M1, M2, M3, M4, M5) are removed from the grinding wheel shaft and threaded onto the arm (23) of the carriage (7), the latter, supported by the hydraulic piston (27), can be released from the table (6) of the machine by means of the flywheel (19) and directed to the grinding wheel preparation workshop.
EP85102233A 1984-07-17 1985-02-28 Grinding machine for crankshafts of diesel or internal-combustion engines Expired EP0170764B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21928/84A IT1176411B (en) 1984-07-17 1984-07-17 CRANKSHAFT GRINDING MACHINE FOR COMBUSTION AND DIESEL ENGINES
IT2192884 1984-07-17

Publications (2)

Publication Number Publication Date
EP0170764A1 true EP0170764A1 (en) 1986-02-12
EP0170764B1 EP0170764B1 (en) 1988-04-20

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ID=11188935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102233A Expired EP0170764B1 (en) 1984-07-17 1985-02-28 Grinding machine for crankshafts of diesel or internal-combustion engines

Country Status (3)

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EP (1) EP0170764B1 (en)
DE (1) DE3562195D1 (en)
IT (1) IT1176411B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011952A1 (en) * 1988-06-04 1989-12-14 Ford Motor Company Limited Grinding workpieces
WO1995005265A1 (en) * 1993-08-18 1995-02-23 Erwin Junker Crankshaft grinding process and device
GB2317842A (en) * 1996-07-24 1998-04-08 Western Atlas Uk Ltd Plunge grinding

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1287518A (en) * 1961-02-01 1962-03-16 Mavilor Improvements made to grinding wheel support devices for grinding machines, in particular for machines for grinding crankshaft seats
FR1464245A (en) * 1965-08-27 1966-12-30 Rk Leblond Machine Tool Co Lathe to rectify the crankshaft pins
US3352065A (en) * 1964-09-09 1967-11-14 Henschel Werke A G Machine for grinding crankshafts
DE1296546B (en) * 1965-05-20 1969-05-29 Ecs Engineering Const Gmbh Adjustable holding device for simultaneous grinding of two work pieces
FR2044830A1 (en) * 1969-05-29 1971-02-26 Toyoda Machine Works Ltd
US3691580A (en) * 1970-11-05 1972-09-19 Houdaille Industries Inc Buffing head
FR2161487A5 (en) * 1971-11-26 1973-07-06 Chemcut Corp
FR2519282A1 (en) * 1981-12-31 1983-07-08 Gendron Grinder for stepped shafts - uses plate shaped grinder with conical rim providing right angled edge with axial face

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1287518A (en) * 1961-02-01 1962-03-16 Mavilor Improvements made to grinding wheel support devices for grinding machines, in particular for machines for grinding crankshaft seats
US3352065A (en) * 1964-09-09 1967-11-14 Henschel Werke A G Machine for grinding crankshafts
DE1296546B (en) * 1965-05-20 1969-05-29 Ecs Engineering Const Gmbh Adjustable holding device for simultaneous grinding of two work pieces
FR1464245A (en) * 1965-08-27 1966-12-30 Rk Leblond Machine Tool Co Lathe to rectify the crankshaft pins
FR2044830A1 (en) * 1969-05-29 1971-02-26 Toyoda Machine Works Ltd
US3691580A (en) * 1970-11-05 1972-09-19 Houdaille Industries Inc Buffing head
FR2161487A5 (en) * 1971-11-26 1973-07-06 Chemcut Corp
FR2519282A1 (en) * 1981-12-31 1983-07-08 Gendron Grinder for stepped shafts - uses plate shaped grinder with conical rim providing right angled edge with axial face

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MACHINES PRODUCTION, no. 281, février 1981, pages 15,17,19,20,25,26, Boulogne, FR; "Rectification: l'influence du microprocesseur" *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011952A1 (en) * 1988-06-04 1989-12-14 Ford Motor Company Limited Grinding workpieces
WO1995005265A1 (en) * 1993-08-18 1995-02-23 Erwin Junker Crankshaft grinding process and device
US5681208A (en) * 1993-08-18 1997-10-28 Erwin Junker Method and apparatus for grinding a crankshaft
CN1080618C (en) * 1993-08-18 2002-03-13 埃尔文·容克 Crankshaft grinding process and device
GB2317842A (en) * 1996-07-24 1998-04-08 Western Atlas Uk Ltd Plunge grinding
GB2317842B (en) * 1996-07-24 2000-12-13 Western Atlas Uk Ltd Improvements relating to grinding methods
US6319097B1 (en) 1996-07-24 2001-11-20 Unova U.K. Limited Grinding methods and apparatus

Also Published As

Publication number Publication date
IT8421928A1 (en) 1986-01-17
EP0170764B1 (en) 1988-04-20
DE3562195D1 (en) 1988-05-26
IT8421928A0 (en) 1984-07-17
IT1176411B (en) 1987-08-18

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