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EP0063983B1 - Honing machine - Google Patents

Honing machine Download PDF

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Publication number
EP0063983B1
EP0063983B1 EP82400640A EP82400640A EP0063983B1 EP 0063983 B1 EP0063983 B1 EP 0063983B1 EP 82400640 A EP82400640 A EP 82400640A EP 82400640 A EP82400640 A EP 82400640A EP 0063983 B1 EP0063983 B1 EP 0063983B1
Authority
EP
European Patent Office
Prior art keywords
voltmeter
lapping
signal
piston
threshold
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
Application number
EP82400640A
Other languages
German (de)
French (fr)
Other versions
EP0063983A1 (en
Inventor
Pierre André Largeteau
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 EP0063983A1 publication Critical patent/EP0063983A1/en
Application granted granted Critical
Publication of EP0063983B1 publication Critical patent/EP0063983B1/en
Expired legal-status Critical Current

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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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
    • 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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/06—Honing machines or devices; Accessories therefor with controlling or gauging equipment

Definitions

  • the present invention relates to lapping machines comprising an expansion cylinder, the piston of which is connected to the expansion rod of a lap, means for detecting the position of the piston of this cylinder and providing a signal which is a function of this position, therefore the expansion of the lapping machine, and means for comparing this signal with a reference value and emitting, when this value is reached, a signal capable of stopping the movement of the piston.
  • DE-A-1 950112 describes a lapping machine of the above type which includes means for modifying the set value in the event of wear of the lapping or of dimensional drift.
  • These means which are pneumatic, are relatively complicated and not very precise and include a large number of mechanical members, such as pawls or nuts.
  • the present invention relates to a lapping machine in which the means for correcting the wear of the lapping are particularly simple and very precise.
  • This lapping machine is characterized in that the means for detecting the position of the jack piston and providing a signal which is a function of this position include a cam secured to the jack piston, and a feeler whose sensitive element is supported on the cam and the body of the expansion cylinder and which supplies an electrical signal to an analog threshold voltmeter comparing this signal to a signal representing the dimension to be reached, and in that the machine comprises means for varying the threshold of the voltmeter.
  • the means for varying the threshold of the voltmeter may include, for example, a digital up-down counter with manual display, a digital analog converter interposed between the counter and the voltmeter, and means for modifying the display of the counter as a function of '' wear of the lapping or the drift of dimension.
  • the means for varying the threshold of the voltmeter may also include a stepping motor, a control screw which is integral in rotation with the shaft of this motor but free in translation relative to it, and is mounted in a nut. fixed, an electronic probe which is controlled by the screw and connected to the voltmeter, and means for rotating the shaft of the stepping motor as a function of the wear of the lapping or of the dimensional drift.
  • a lapping head comprising an expansion cylinder body 1 which is integral with the piston 2 of a ram cylinder, only the lower end of this cylinder being shown.
  • the piston 3 of the expansion cylinder crossed by a spindle 4 whose lower part carries the lapping 5 and whose upper part is mounted in the body 1 by means of a bearing 6 and connected to pin 7 of the lapping machine.
  • the spindle 4 is itself crossed by an expansion rod 8 which carries the expansion cone 9 of the lapping 5 and which is secured in translation with the piston 3 by means not shown in the drawing.
  • a bracket 10 integral with the piston 3 of the expansion cylinder carries a pilot cam 11 which has the same profile as the expansion cone 9.
  • An intermediate feeler 12 is pivotally mounted at 13 on a support 14 fixed to the body 1.
  • This probe carries a shoe which bears on the cam 11 and on which bears the sensitive element of an electronic probe 15 having its body secured to the support 14.
  • the displacement of the piston 3 of the expansion cylinder 1 rotates the probe 12 which actuates probe 15, the latter thus providing a signal which is a function of displacement of the piston 3 and therefore of the expansion rod 8.
  • the lapping machine is associated with an electronic box comprising a voltmeter 16 with two inputs E 1 and E 2 .
  • the input E 1 is connected to the probe 15 while the input E 2 receives a variable signal which is added to the signal of the input E i , and the sum is compared with the fixed threshold of the voltmeter, which indirectly amounts to modifying the set point of the voltmeter.
  • the voltmeter 16 emits in 17 an order (which could be a pulse or a circuit closure) suitable for cutting the supply of a solenoid valve not shown supplying the cylinder 1 of the jack expansion.
  • variable signal defining the setpoint is supplied by a digital up-down counter 18 with manual or electric display, on the dial 19 from which the voltage to be applied in E 2 can be displayed.
  • This counter 18 is connected to the input E 2 via a digital-analog converter 20 with variable gain.
  • the up-down counter 18 has two inputs E 3 and E4. When a pulse is supplied to input E 3 , the smallest decade of the counter, for example, is increased by one; when a pulse arrives at input E4, the same decade is reduced by one.
  • Lapped parts are checked. If the rating measured is within tolerance, the part is accepted; it is rejected if the tolerance is exceeded. If the measured average dimension of a series of parts, while remaining within the tolerance, is offset from the center of tolerance by an excessive value, for example a micron, a pulse is applied to the input E 3 or to the input E4 according to the offset direction. This impulse can be provided automatically by the parts control device.
  • the continuous signal from the digital analog converter 20 is supplied not only to the input E 2 , but also to two voltmeters 21 and 22 respectively at maximum and minimum threshold.
  • the voltmeter 21 is adjusted so as to provide information when a maximum value corresponding to the maximum admissible wear of the lapping is reached.
  • the voltmeter 22 provides a pulse when a minimum value corresponding to the total deflation of the lapping is reached.
  • the outputs of the voltmeters 21 and 22 are connected to the inputs of an OR gate 23 the output of which is connected to a circuit capable of closing the solenoid valve supplying the cylinder 1 of the expansion cylinder and at the same time stopping the machine .
  • a stepping motor 24 is mounted in a fixed support 25.
  • This motor has two inputs E ' 3 and E' 4 which are supplied like the inputs E 3 and E4 and which are such that the arrival of a pulse rotates the motor shaft 26 by one step, in one direction if the pulse is received by input E ' 3 and in the opposite direction if it is received by l 'input E' 4 .
  • a screw 27 is integral in rotation with the shaft 26, but free in translation relative to this shaft; for this purpose, the shaft 26 may, for example, be integral with a toothed wheel engaged in internal grooves of the screw 27.
  • the latter is mounted in a fixed nut 28 and carries at its end a disc 29 on which is in support the tip 30 of an electronic probe 31; the latter is connected to the input E 2 which thus receives a signal which is a function of the movement of the disc 29.
  • the disc 29 is movable between two contacts 32 and 33 which generate pulses when they are reached by the disc 29 and constitute maximum and minimum threshold contacts playing the same role as the threshold voltmeters 21 and 22. It goes without saying that the present invention should not be considered as limited to the embodiment described and shown, but covers, on the contrary, all variants.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

La présente invention concerne les machines à roder comprenant un vérin d'expansion dont le piston est relié à la tige d'expansion d'un rodoir, des moyens pour détecter la position du piston de ce vérin et fournir un signal fonction de cette position, donc de l'expansion du rodoir, et des moyens pour comparer ce signal à une valeur de consigne et émettre, quand cette valeur est atteinte, un signal propre à arrêter le déplacement du piston.The present invention relates to lapping machines comprising an expansion cylinder, the piston of which is connected to the expansion rod of a lap, means for detecting the position of the piston of this cylinder and providing a signal which is a function of this position, therefore the expansion of the lapping machine, and means for comparing this signal with a reference value and emitting, when this value is reached, a signal capable of stopping the movement of the piston.

Dans les machines à roder de ce genre, l'expansion du rodoir est arrêtée automatiquement dès que l'expansion désirée est atteinte. Mais l'expérience montre que les pièces rodées à l'aide de ces machines peuvent subir des variations de cote, soit en raison de l'usure du rodoir, soit par suite d'une dérive de cote d'origine thermique ou mécanique.In lapping machines of this kind, the expansion of the lapping is stopped automatically as soon as the desired expansion is reached. However, experience has shown that parts lapped using these machines can undergo dimensional variations, either due to wear of the lapping point or as a result of dimensional drift of thermal or mechanical origin.

La DE-A-1 950112 décrit une machine à roder du type ci-dessus qui comporte des moyens pour modifier la valeur de consigne en cas d'usure du rodoir ou de dérive de cote. Ces moyens qui sont pneumatiques, sont relativement compliqués et peu précis et comportent un nombre important d'organes mécaniques, tels que des cliquets ou des écrous.DE-A-1 950112 describes a lapping machine of the above type which includes means for modifying the set value in the event of wear of the lapping or of dimensional drift. These means, which are pneumatic, are relatively complicated and not very precise and include a large number of mechanical members, such as pawls or nuts.

La présente invention a pour objet une machine à roder dans laquelle les moyens pour corriger l'usure du rodoir sont particulièrement simples et très précis.The present invention relates to a lapping machine in which the means for correcting the wear of the lapping are particularly simple and very precise.

Cette machine à roder est caractérisée en ce que les moyens pour détecter la position du piston de vérin et fournir un signal fonction de cette position comprennent une came solidaire du piston du vérin, et un palpeur dont l'élément sensible est en appui sur la came et le corps du vérin d'expansion et qui fournit un signal électrique à un voltmètre analogique à seuil comparant ce signal à un signal représentant la cote à atteindre, et en ce que la machine comporte des moyens pour faire varier le seuil du voltmètre.This lapping machine is characterized in that the means for detecting the position of the jack piston and providing a signal which is a function of this position include a cam secured to the jack piston, and a feeler whose sensitive element is supported on the cam and the body of the expansion cylinder and which supplies an electrical signal to an analog threshold voltmeter comparing this signal to a signal representing the dimension to be reached, and in that the machine comprises means for varying the threshold of the voltmeter.

Les moyens pour faire varier le seuil du voltmètre peuvent comprendre, par exemple, un compteur-décompteur numérique à affichage manuel, un convertisseur numérique analogique interposé entre le compteur et le voltmètre, et des moyens pour modifier l'affichage du compteur en fonction de l'usure du rodoir ou de la dérive de cote.The means for varying the threshold of the voltmeter may include, for example, a digital up-down counter with manual display, a digital analog converter interposed between the counter and the voltmeter, and means for modifying the display of the counter as a function of '' wear of the lapping or the drift of dimension.

Les moyens de variation du seuil du voltmètre peuvent également comprendre un moteur pas-à-pas, une vis de commande qui est solidaire en rotation de l'arbre de ce moteur mais libre en translation par rapport à lui, et est monté dans un écrou fixe, un palpeur électronique qui est commandé par la vis et connecté au voltmètre, et des moyens pour faire tourner l'arbre du moteur pas-à-pas en fonction de l'usure du rodoir ou de la dérive de cote.The means for varying the threshold of the voltmeter may also include a stepping motor, a control screw which is integral in rotation with the shaft of this motor but free in translation relative to it, and is mounted in a nut. fixed, an electronic probe which is controlled by the screw and connected to the voltmeter, and means for rotating the shaft of the stepping motor as a function of the wear of the lapping or of the dimensional drift.

On a décrit ci-après, à titre d'exemples non limitatifs, deux modes de réalisation de la machine à roder perfectionnée selon la présente invention, avec référence au dessin annexé dans lequel :

  • la Figure 1 est un schéma d'un premier mode de réalisation,
  • la Figure 2 montre schématiquement un détail d'un second mode de réalisation.
Two embodiments of the improved lapping machine according to the present invention have been described below, by way of non-limiting examples, with reference to the appended drawing in which:
  • FIG. 1 is a diagram of a first embodiment,
  • Figure 2 schematically shows a detail of a second embodiment.

A la Figure 1, on voit une tête de rodage comprenant un corps de vérin d'expansion 1 qui est solidaire du piston 2 d'un vérin de battement, seule l'extrémité inférieure de ce vérin étant représentée. Dans le corps 1 est monté coulissant le piston 3 du vérin d'expansion traversé par une broche 4 dont la partie inférieure porte le rodoir 5 et dont la partie supérieure est montée dans le corps 1 par l'intermédiaire d'un roulement 6 et reliée à la broche 7 de la machine à roder. La broche 4 est elle-même traversée par une tige d'expansion 8 qui porte le cône d'expansion 9 du rodoir 5 et qui est solidarisée en translation avec le piston 3 par des moyens non représentés au dessin.In Figure 1, there is shown a lapping head comprising an expansion cylinder body 1 which is integral with the piston 2 of a ram cylinder, only the lower end of this cylinder being shown. In the body 1 is slidably mounted the piston 3 of the expansion cylinder crossed by a spindle 4 whose lower part carries the lapping 5 and whose upper part is mounted in the body 1 by means of a bearing 6 and connected to pin 7 of the lapping machine. The spindle 4 is itself crossed by an expansion rod 8 which carries the expansion cone 9 of the lapping 5 and which is secured in translation with the piston 3 by means not shown in the drawing.

Une potence 10 solidaire du piston 3 du vérin d'expansion porte une came de pilotage 11 qui a même profil que le cône d'expansion 9. Un palpeur intermédiaire 12 est monté pivotant en 13 sur un support 14 fixé sur le corps 1. Ce palpeur porte un patin qui est en appui sur la came 11 et sur lequel est en appui l'élément sensible d'un palpeur électronique 15 ayant son corps solidaire du support 14. Le déplacement du piston 3 du vérin d'expansion 1 fait pivoter le palpeur 12 qui actionne le palpeur 15, ce dernier fournissant ainsi un signal fonction de déplacement du piston 3 donc de la tige d'expansion 8.A bracket 10 integral with the piston 3 of the expansion cylinder carries a pilot cam 11 which has the same profile as the expansion cone 9. An intermediate feeler 12 is pivotally mounted at 13 on a support 14 fixed to the body 1. This probe carries a shoe which bears on the cam 11 and on which bears the sensitive element of an electronic probe 15 having its body secured to the support 14. The displacement of the piston 3 of the expansion cylinder 1 rotates the probe 12 which actuates probe 15, the latter thus providing a signal which is a function of displacement of the piston 3 and therefore of the expansion rod 8.

A la machine à roder est associé un coffret électronique comprenant un voltmètre 16 à deux entrées E1 et E2. L'entrée E1 est connectée au palpeur 15 alors que l'entrée E2 reçoit un signal variable qui est ajouté au signal de l'entrée Ei, et la somme est comparée au seuil fixe du voltmètre, ce qui revient indirectement à modifier la consigne du voltmètre. Quand le signal reçu du palpeur atteint la valeur de consigne, le voltmètre 16 émet en 17 un ordre (qui pourrait être une impulsion ou une fermeture de circuit) propre à couper l'alimentation d'une électrovanne non représentée alimentant le cylindre 1 du vérin d'expansion.The lapping machine is associated with an electronic box comprising a voltmeter 16 with two inputs E 1 and E 2 . The input E 1 is connected to the probe 15 while the input E 2 receives a variable signal which is added to the signal of the input E i , and the sum is compared with the fixed threshold of the voltmeter, which indirectly amounts to modifying the set point of the voltmeter. When the signal received from the probe reaches the set value, the voltmeter 16 emits in 17 an order (which could be a pulse or a circuit closure) suitable for cutting the supply of a solenoid valve not shown supplying the cylinder 1 of the jack expansion.

Le signal variable définissant la valeur de consigne est fourni par un compteur-décompteur 18 numérique à affichage manuel ou électrique, sur le cadran 19 duquel on peut afficher la tension à appliquer en E2. Ce compteur 18 est connecté à l'entrée E2 par l'intermédiaire d'un convertisseur digital-analogique 20 à gain variable.The variable signal defining the setpoint is supplied by a digital up-down counter 18 with manual or electric display, on the dial 19 from which the voltage to be applied in E 2 can be displayed. This counter 18 is connected to the input E 2 via a digital-analog converter 20 with variable gain.

Le compteur-décompteur 18 dispose de deux entrées E3 et E4. Lorsqu'une impulsion est fournie à l'entrée E3, la plus petite décade du compteur, par exemple, est majorée d'une unité ; lorsqu'une impulsion arrive à l'entrée E4, la même décade est minorée d'une unité.The up-down counter 18 has two inputs E 3 and E4. When a pulse is supplied to input E 3 , the smallest decade of the counter, for example, is increased by one; when a pulse arrives at input E4, the same decade is reduced by one.

Les pièces rodées sont contrôlées. Si la cote mesurée est comprise dans la tolérance, la pièce est acceptée ; elle est rejetée si la tolérance est dépassée. Si la cote moyenne mesurée d'une série de pièces, tout en restant dans la tolérance, est décalée du centre de tolérance d'une valeur excessive, par exemple un micron, on applique une impulsion à l'entrée E3 ou à l'entrée E4 suivant le sens de décalage. Cette impulsion peut être fournie automatiquement par l'appareil de contrôle des pièces.Lapped parts are checked. If the rating measured is within tolerance, the part is accepted; it is rejected if the tolerance is exceeded. If the measured average dimension of a series of parts, while remaining within the tolerance, is offset from the center of tolerance by an excessive value, for example a micron, a pulse is applied to the input E 3 or to the input E4 according to the offset direction. This impulse can be provided automatically by the parts control device.

Dans l'exemple de réalisation représenté, le signal continu provenant du convertisseur digital analogique 20 est fourni non seulement à l'entrée E2, mais également à deux voltmètres 21 et 22 respectivement à seuil maximal et à seuil minimal. Le voltmètre 21 est réglé de manière à fournir des informations quand est atteinte une valeur maximale correspondant à l'usure maximale admissible du rodoir. Le voltmètre 22 fournit une impulsion quand est atteinte une valeur minimale correspondant au dégonflage total du rodoir.In the embodiment shown, the continuous signal from the digital analog converter 20 is supplied not only to the input E 2 , but also to two voltmeters 21 and 22 respectively at maximum and minimum threshold. The voltmeter 21 is adjusted so as to provide information when a maximum value corresponding to the maximum admissible wear of the lapping is reached. The voltmeter 22 provides a pulse when a minimum value corresponding to the total deflation of the lapping is reached.

Les sorties des voltmètres 21 et 22 sont connectées aux entrées d'une porte OU 23 dont la sortie est connectée à un circuit propre à fermer l'électro-vanne alimentant le cylindre 1 du vérin d'expansion et en même temps à arrêter la machine.The outputs of the voltmeters 21 and 22 are connected to the inputs of an OR gate 23 the output of which is connected to a circuit capable of closing the solenoid valve supplying the cylinder 1 of the expansion cylinder and at the same time stopping the machine .

Dans le mode de réalisation de la figure 2, un moteur pas-à-pas 24 est monté dans un support fixe 25. Ce moteur comporte deux entrées E'3 et E'4 qui sont alimentées comme les entrées E3 et E4 et qui sont telles que l'arrivée d'une impulsion fasse pivoter d'un pas l'arbre 26 du moteur, dans un sens si l'impulsion est reçue par l'entrée E'3 et dans le sens opposé si elle est reçue par l'entrée E'4. Une vis 27 est solidaire en rotation de l'arbre 26, mais libre en translation par rapport à cet arbre ; à cet effet, l'arbre 26 peut, par exemple, être solidaire d'une roue dentée engagée dans des cannelures intérieures de la vis 27. Cette dernière est montée dans un écrou fixe 28 et porte à son extrémité un disque 29 sur lequel est en appui la pointe 30 d'un palpeur électronique 31 ; ce dernier est connecté à l'entrée E2 qui reçoit ainsi un signal fonction du déplacement du disque 29.In the embodiment of FIG. 2, a stepping motor 24 is mounted in a fixed support 25. This motor has two inputs E ' 3 and E' 4 which are supplied like the inputs E 3 and E4 and which are such that the arrival of a pulse rotates the motor shaft 26 by one step, in one direction if the pulse is received by input E ' 3 and in the opposite direction if it is received by l 'input E' 4 . A screw 27 is integral in rotation with the shaft 26, but free in translation relative to this shaft; for this purpose, the shaft 26 may, for example, be integral with a toothed wheel engaged in internal grooves of the screw 27. The latter is mounted in a fixed nut 28 and carries at its end a disc 29 on which is in support the tip 30 of an electronic probe 31; the latter is connected to the input E 2 which thus receives a signal which is a function of the movement of the disc 29.

Le disque 29 est mobile entre deux contacts 32 et 33 qui engendrent des impulsions lorsqu'ils sont atteints par le disque 29 et constituent des contacts à seuils maximal et minimal jouant le même rôle que les voltmètres à seuils 21 et 22. Il va de soi que la présente invention ne doit pas être considérée comme limitée au mode de réalisation décrit et représenté, mais en couvre, au contraire, toutes les variantes.The disc 29 is movable between two contacts 32 and 33 which generate pulses when they are reached by the disc 29 and constitute maximum and minimum threshold contacts playing the same role as the threshold voltmeters 21 and 22. It goes without saying that the present invention should not be considered as limited to the embodiment described and shown, but covers, on the contrary, all variants.

Claims (6)

1. Lapping machine comprising an expansion jack 1 of which the piston 3 is connected to the expansion rod 8 of a lapping tool 5, means for detecting the position of the piston of this jack and for furnishing a signal as a function of this position, therefore of the expansion of the lapping tool, means for comparing this signal with a reference value and for emitting, when this value is attained, a signal adapted to stop the displacement of the piston, and means for modifying the reference value in the event of wear of the lapping tool or of drift of dimension, characterized in that the means for detecting the position of the piston of the jack and for furnishing a signal as a function of this position comprise a cam 11 fast with the piston 3 of the jack, and a sensor 15 of which the sensitive element is in abutment on the cam and the body fast with the body of the expansion jack and which furn ishes an electric signal to an analog voltmeter 16 with threshold comparing this signal with a signal representing the dimension to be attained, and in that the machine comprises means for varying the threshold of the voltmeter.
2. Lapping machine according to Claim 1, characterized in that the means for varying the threshold of the voltmeter 16 comprise a digital reversible counter 18 with manual display, a digital-to-analog converter 20 interposed between the up-counter and the voltmeter, and means for modifying the display of the up-counter as a function of the wear of the lapping tool or of the drift of dimension.
3. Lapping machine according to Claim 2, characterized in that it comprises a maximum threshold voltmeter 21 corresponding to the complete wear of the lapping tool and a minimum threshold voltmeter 22 corresponding to total deflation of the lapping tool, the two voltmeters 21 and 22 being connected to the output of the digital-to-analog converter 20, and means connected to these voltmeters and adapted to stop the machine when one of the two thresholds is attained.
4..Lapping machine according to Claim 1, characterized in that the means for varying the threshold of the voltmeter comprise a stepping motor 24, a control screw 27 which is fast in rotation with the shaft 26 of this motor but free in translation with respect thereto, and is mounted in a fixed nut 28, an electronic sensor 30-31 which is controlled by the screw and connected to the voltmeter 16, and means for rotating the shaft of the stepping motor as a function of the wear of the lapping tool or the drift of dimension.
5. Lapping machine according to Claim 4, characterized in that the stepping motor 24 comprises a first input E'3 adapted to rotate the motor by a step in one direction when a pulse is received at this input, and a second input E'4 adapted to rotate the motor by a step in the opposite direction when a pulse is received at this second input.
6. Lapping machine according to Claims 4 to 5, characterized in that it comprises a disc 29 fast with the screw 27, two contacts 32 and 33 disposed on either side of the disc 29 and adapted to be actuated by this disc when the axial displacement of the disc has attained a certain value, and means controlled by these contacts to stop the machine.
EP82400640A 1981-04-16 1982-04-07 Honing machine Expired EP0063983B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8108064A FR2504047A1 (en) 1981-04-16 1981-04-16 RODER MACHINE
FR8108064 1981-04-16

Publications (2)

Publication Number Publication Date
EP0063983A1 EP0063983A1 (en) 1982-11-03
EP0063983B1 true EP0063983B1 (en) 1984-10-17

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EP82400640A Expired EP0063983B1 (en) 1981-04-16 1982-04-07 Honing machine

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US (1) US4516359A (en)
EP (1) EP0063983B1 (en)
DE (1) DE3260993D1 (en)
FR (1) FR2504047A1 (en)

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US4627196A (en) * 1983-01-03 1986-12-09 Western Gear Machinery Co. Pressure-compensated hydraulic positioning system
EP0248070A1 (en) * 1985-12-16 1987-12-09 Delapena Honing Equipment Limited Stone expansion control for a honing machine
FR2654968B1 (en) * 1989-11-30 1994-07-22 Procedes Machines Speciales BORE EXPANSION LAPPING MACHINE.
FR2728493A1 (en) * 1994-12-27 1996-06-28 Peugeot METHOD AND DEVICE FOR RETRACTING THE WEAR OF A PARTS BREAK-IN TOOL ON A BREAK-IN MACHINE, IN PARTICULAR OF AN EXPANDABLE BOREHOLE FOR BORES

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FR2457744A1 (en) * 1979-05-28 1980-12-26 Citroen Sa Control for expansion of polishing tool of polishing machine - achieves increased precision using modulating device to produce control signal for hydraulic system

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FR2504047A1 (en) 1982-10-22
FR2504047B1 (en) 1983-05-20
DE3260993D1 (en) 1984-11-22
US4516359A (en) 1985-05-14
EP0063983A1 (en) 1982-11-03

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