EP2849919B1 - Procédé de rectification d'extrémités de ressorts, et rectifieuse d'extrémités de ressorts - Google Patents

Procédé de rectification d'extrémités de ressorts, et rectifieuse d'extrémités de ressorts Download PDF

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Publication number
EP2849919B1
EP2849919B1 EP14729888.9A EP14729888A EP2849919B1 EP 2849919 B1 EP2849919 B1 EP 2849919B1 EP 14729888 A EP14729888 A EP 14729888A EP 2849919 B1 EP2849919 B1 EP 2849919B1
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EP
European Patent Office
Prior art keywords
grinding
temperature
spring
helical compression
compression springs
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EP14729888.9A
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German (de)
English (en)
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EP2849919A1 (fr
Inventor
Klaus Wurster
Jürgen Wolf
Martin Schnizler
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Wafios AG
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Wafios AG
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    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/167—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings end faces coil springs
    • 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/14—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the temperature during grinding
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/17—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders

Definitions

  • Helical compression springs are machine elements that are required in numerous applications in large numbers and different designs. Helical compression springs are needed for example as suspension springs or valve springs in large quantities in the automotive industry. A helical compression spring may be described as a coiled or wound compression spring of wire with spaces between turns.
  • the spring ends i. the two axial end portions of the helical compression springs.
  • the spring ends are used to transfer the spring force to the connector body and are usually designed so that at each spring position as axial as possible compression is effected.
  • the spring end grinding i. the material-removing machining of the spring ends by means of grinding, contributes in this context to create at the spring ends at right angles to the spring axis sufficient contact surfaces for the connection body.
  • Spring end grinding is part of the process chain for producing a helical compression spring from cold-formed wire. This process chain includes many further production steps, which ultimately lead to a ready-to-install helical compression spring. Economical production of helical compression springs is only possible if efficient manufacturing processes are implemented in the various process stages. The spring end grinding is of particular importance, since a large part of the production costs incurred in helical compression springs account for this operation. Therefore, considerable efforts are being made to optimize the spring end grinding process so that the helical compression springs can be manufactured with high productivity without affecting the quality of the manufactured products.
  • a numerically controlled spring end grinding machine suitable for the double side grinding method has a grinding unit, a loading unit, and a control unit for controlling the loading unit and the grinding unit.
  • the grinding unit has a grinding wheel pair with two rotatable grinding wheels, the axes of rotation of which are normally arranged coaxially with each other or slightly tilted against each other. Between the mutually facing side surfaces of the grinding wheels a grinding space is formed.
  • the loading unit has at least one more or less axially parallel with the grinding wheels rotatable loading plate, which has a plurality of off-axis spring housings for receiving in each case a coil spring.
  • the spring axes of the recorded in the spring receptacles helical compression springs should be as parallel to the axis of rotation of the loading unit and thus perpendicular to the grinding side surfaces of the grinding wheels.
  • the grinding performance is limited by the permissible temperature of the spring material and the performance of the grinding wheels. If the spring material becomes too hot, material changes can occur come, which adversely affect the subsequent spring behavior and / or the strength of the material. Therefore, material overheating should be avoided if possible.
  • the invention provides a method having the features of claim 1. Furthermore, a spring-end grinding machine with the features of claim 12 is provided.
  • the temperature measuring device is arranged in a supply channel for cooling air and / or in a cooling air flow generated by the supply channel.
  • the supply channel carries cooling air from a pressure side with a fan to an orifice area of the supply channel in the vicinity of the grinding wheels and / or the loading plate, in order to cool the components lying in the cooling air flow.
  • the temperature measuring device is located within a more or less directed Cooling air flow and can thereby be cooled or temperature stabilized.
  • the air flow protects the temperature sensing device from contamination or damage from flying sparks and / or other machining products that could affect the functioning of the temperature measuring device.
  • the temperature is preferably determined as close as possible to (at least) one spring end, e.g. in the region of a first subsequent to a spring end turn. Particularly reliable are measurements directly on the machined by grinding front page.
  • an automatic control of at least one grinding parameter takes place as a function of the spring temperature or of the temperature signal representing it.
  • the temperature measuring device is wired or wirelessly connected to the control unit for signal transmission and in the control unit is a control program is active, which is configured to process the temperature signal or a signal derived therefrom, wherein the control unit at least one operating parameter of the grinding unit and / or Loading unit in response to the temperature signal during the grinding operation changes.
  • the changeable operating parameters may include the rotational speed of the loading plate and the rotational speeds of the two grinding wheels, which can be preferably changed independently. If the spring-end grinding machine is set up for the infeed grinding, alternatively or additionally, the delivery of a grinding wheel which can be fed towards the other grinding wheel can be controlled as a function of the temperature signal.
  • a semi-automatic control would be possible in which an operator is involved in the control process. This can be done, for example, by activating a display device, for example a visual display device and / or an acoustic display device, on the basis of the temperature signal if the temperature signal indicates heating of the helical compression springs beyond a still valid threshold value. As a result, the operator is given the opportunity to intervene by changes in operating parameters of the grinding unit and / or the loading unit in the grinding process in order to avoid overheating of the helical compression springs.
  • a display device for example a visual display device and / or an acoustic display device
  • the temperature-dependent control or regulation can be used in the continuous process and the delivery process.
  • a feed movement of one of the grinding wheels takes place in order to grind the helical compression springs to the final dimension.
  • This may be, for example, a constant or clocked feed movement proportional to the grinding force, which is generated by means of electronic control.
  • the spring end grinding machine is set up for the process of Zustellschleifens and operated in the delivery process.
  • infeed grinding during the grinding operation, at least one of the grinding wheels is delivered towards the other grinding wheel at a feed rate predetermined by the control unit. It is possible to control the feed rate in response to the temperature signal, so perform a temperature-dependent control of the feed rate.
  • a particularly high productivity is achieved in some embodiments in that the delivery is carried out with a predetermined, possibly adjustable by the operator, maximum delivery speed until a dependent of the type of helical compression spring and other process parameters switching point is reached, in which the temperature up to has approached a predetermined temperature difference to a predetermined limit temperature.
  • "Limit temperature” is here considered a temperature of the spring material, exceeding which temperature-related material damage can not be reliably excluded.
  • the grinding process should therefore be driven as far as possible so that the limit temperature is not reached.
  • the temperature difference which may be adjustable by inputs on the control, which represents a safety distance to the limit temperature, so to speak, serves this purpose. In this process variant can thus be ground so long with the predetermined maximum feed rate and thus with maximum removal rate, as long as thereby the temperature of the helical compression springs of the spring ends of the helical compression springs does not rise too close to the limit temperature.
  • a limit temperature may be set which corresponds to a barely tolerable maximum temperature, and the control may be performed such that the temperature of the helical compression spring at no time during the grinding operation the predetermined limit temperature exceeds. Possibly. Exceptions may be permitted in the initial phase of a grinding operation, if it is ensured that possibly overheated areas are removed sufficiently strongly in the further course of the grinding operation, so that the finished product does not contain any portions which may have been damaged by overheating.
  • a particularly reliable control process is achieved in some embodiments in that the determination of the temperature signal on a helical compression spring takes place immediately after the exit of the helical spring from the grinding space.
  • the helical compression springs are usually several times on circular arc Sanding belts transported through the grinding room. This results in a change between a grinding phase in which the helical compression springs is located between the grinding wheels and their spring ends are ground, and a non-intrusive revolution phase, which begins with the extension from the grinding space and ends with the renewed retraction of the helical compression springs in the grinding space.
  • the determination of the temperature signal thus takes place at the beginning of the non-invasive circulation phase, ie at the beginning of an intermediate cooling phase.
  • the temperature signal can be regarded as representative of the maximum reached during the grinding engagement temperature, resulting in any case a small constant difference to the actual maximum temperature reached. As a result, the control is particularly reliable process.
  • a temperature decrease resulting from the grinding process or characteristic of the current grinding process can be used for given parameters such as infeed, speed, possibly spring parameters or the like. detected and e.g. be quantified by a temperature difference.
  • the influence of the environment or the cooling outside of the grinding space can be detected and taken into account in the control. You can thereby get a learning process.
  • data for a radial dressing profile of a grinding wheel are determined on the basis of the separate temperature signals and / or the state of wear of the grinding wheel is evaluated on the basis of the separate temperature signals.
  • a cooling device may have a supply channel for cooling air, which opens outside the grinding space above the loading plate.
  • the temperature measuring device e.g. a thermal camera, may be disposed within this supply channel.
  • reference control operating data are stored in a memory of the control unit and represent at least one time-dependent functional relationship between the change of a grinding parameter and a dependent change in the temperature of helical compression springs, wherein the grinding process is controlled taking into account the reference grinding operation data ,
  • a predictive (predicative) control of the grinding operation is possible.
  • the deliverable grinding wheel may be delivered very quickly, ie at a high delivery speed, so that the temperature of the ground springs rises steeply. Without predictive control, the delivery could be stopped, for example, when a predetermined maximum allowable temperature has been reached. However, under certain circumstances, the helical compression springs will still be biased, so that the helical compression springs would continue to heat up. Therefore, it would be advantageous in this case to reduce the delivery speed earlier.
  • the correct time can be set based on the reference loop operation data. In order to reduce the preload quickly, it may even be necessary to drive the delivery in the negative area. With the help of one or more reference grinding operations or grinding tests the optimum time for the beginning of the change of the feed rate and also for the extent of the change can be determined in order to avoid an "overshoot" of the temperature.
  • blower outputs can be adjusted accordingly to values below their maximum blower output, so that an energy-efficient operation while avoiding overheating of the helical compression springs is ensured.
  • maximum blowing power for blowing and / or suction is started at the beginning of a grinding operation. Thereafter, the fan power is reduced step by step or continuously according to a predeterminable timing scheme and the effect on the coil spring temperature is monitored.
  • the upper functional unit with upper grinding spindle 132 and motor 136 is height-adjustable for adaptation to different spring lengths.
  • the lower grinding spindle can be moved vertically to allow adaptation to different spring lengths.
  • it is provided as an option to bring one of the grinding wheels or one of the grinding spindles in a defined skew.
  • the upper grinding spindle 132 can be delivered by movement parallel to the spindle axis 134 in the direction of the lower grinding wheel, wherein the feed speed or the delivery speed profile can be predetermined by the control unit 220.
  • the spring-end grinding machine is equipped with a cooling device which is adapted to cool the loading plate and the helical compression springs held therein during the grinding by means of cooling air.
  • the cooling device has two supply channels 200, 210 for cooling air (cf. Fig. 4 ), which lead to a fan on the pressure side and open outside the grinding space above the loading plate.
  • the in Fig. 1 shown supply channel 200 leads from above perpendicular to the top of the arranged in working position loading plate 160.
  • the mouth opening 202 is located at a small distance (a few centimeters) above the exit area where the helical compression springs leave the grinding room.
  • the temperature measuring system of the embodiment has a temperature measuring device in the form of a thermal imaging camera 190, which is connected to the control unit 220.
  • the thermal imager 190 is mounted within the feed channel 200 at a suitable distance above the loading positioner 160 in the working position such that the tracks of all three rows of spring receivers 166A, 166M, 166I pass through the generally rectangular two-dimensional image field 192 of the thermal imager.
  • the temperature measurement takes place through the mouth 202.
  • a dressing profile can be determined manually or automatically, with which essentially the same process or the same grinding temperature is achieved in all spring rows. This would then indicate that a uniform removal takes place in all spring rows.
  • the temperature can be measured simultaneously or offset in time at both ends of the helical compression springs. This makes it possible to ensure, by means of a temperature-controlled variation of the cutting speed or rotational speed of the upper and lower grinding wheels, that both spring ends are ground at the power limit but below the limit temperature. hereby the productivity can be increased again.
  • a second thermal imaging camera may be provided in the region below the loading plate. It is also possible to perform an oblique measurement through the middle of the spring from above into the region of the remote lower spring end.
  • An in-process temperature measurement during the grinding operation during spring end grinding also makes it possible to precisely align any measures for cooling or suction of the grinding chamber with the grinding material and thus to determine it in a spring-specific manner.
  • servo-controlled nozzles with feedback and / or regulation of the nozzle position can be provided via the spring temperature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Claims (15)

  1. Procédé de rectification d'extrémités de ressort de ressorts de pression à vis par utilisation d'une rectifieuse d'extrémités de ressort (100) à commande numérique comportant une unité de rectification (120), une unité de chargement (150) et une unité de commande (220) pour commander l'unité de chargement (150) et l'unité de rectification (120) ;
    l'unité de rectification (120) comportant une paire de disques de rectification avec deux disques de rectification (130, 140) pouvant tourner entre lesquels une chambre de rectification (135) est formée ; et l'unité de chargement (150) comportant au moins un disque de chargement (160, 170) pouvant tourner pour l'essentiel parallèlement à l'axe avec les disques de rectification (130, 140) ayant une pluralité de logements de ressort (166) désaxés pour loger respectivement un ressort de pression à vis (F) ;
    sachant que pendant une opération de rectification, les ressorts de pression à vis (F) logés dans les logements de ressort (166) sont transportés successivement à travers la chambre de rectification (135) entre les disques de rectification (130, 140) tournants par rotation du disque de chargement (160, 170) et que les deux extrémités de ressort des ressorts de pression à vis (F) se trouvant en l'occurrence respectivement dans la chambre de rectification (135) sont usinés simultanément par rectification ;
    caractérisé en ce que :
    pendant l'opération de rectification d'au moins un des ressorts de pression à vis (F), un signal de température représentant la température est déterminé par une mesure de température ;
    le dispositif de mesure de température (180) étant disposé dans un canal d'alimentation (200, 210) en air de refroidissement et/ou dans un courant d'air de refroidissement produit par le canal d'alimentation (200, 210) de sorte que le dispositif de mesure de température (190) est refroidi par un courant d'air de refroidissement et protégé contre l'encrassement.
  2. Procédé selon la revendication 1, dans lequel une commande de la rectifieuse d'extrémités de ressort est produite en fonction du signal de température.
  3. Procédé selon la revendication 1 ou 2, dans lequel la mesure de température se produit au travers d'une zone d'embouchure (202, 212) du canal d'alimentation.
  4. Procédé selon la revendication 1, 2 ou 3, dans lequel la température est mesurée dans la zone d'une première spire, connexe à une extrémité de ressort, du ressort de pression à vis (F), notamment directement au niveau d'un côté avant, usiné par rectification, du ressort de pression à vis (F) et/ou dans lequel la température est mesurée sans contact, notamment par utilisation d'une caméra thermique (190).
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé par une mesure de température à résolution spatiale dans laquelle la température est mesurée en deux positions de mesure ou plus placées à une certaine distance les unes des autres, au niveau d'un ressort de pression à vis (F) ou de plusieurs ressorts à vis (F) différents.
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel un programme de commande est actif dans l'unité de commande (220), ledit programme étant configuré pour traiter le signal de température ou un signal en découlant et dans lequel l'unité de commande (220) fait varier au moins un paramètre de fonctionnement de l'unité de rectification (120) et/ou de l'unité de chargement (150) en fonction du signal de température pendant l'opération de rectification et/ou dans lequel une commande d'au moins une soufflerie prévue pour l'alimentation en air et/ou l'aspiration d'air est exécutée en fonction des signaux de température de la mesure de température.
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel une température limite (TG) est prédéfinie, ladite température correspondant à une température maximale tolérable et dans lequel la commande est exécutée de telle sorte que la température du ressort à vis (F) en un point de mesure ne dépasse à aucun instant la température limite (TG) pendant l'opération de rectification.
  8. Procédé selon l'une quelconque des revendications précédentes, dans lequel pendant l'opération de rectification, un des disques de rectification (130, 140) est avancé à une vitesse d'avance prédéfinissable par l'unité de commande (220) en direction de l'autre disque de rectification et dans lequel la vitesse d'avance est commandée en fonction du signal de température, l'avance se produisant de préférence à une vitesse d'avance maximale prédéfinie jusqu'à ce qu'un point de commutation (SP) soit atteint au niveau duquel la température est proche, jusqu'à une différence de température (ΔT) prédéfinissable, d'une température limite (TG) prédéfinissable, de préférence la vitesse d'avance étant commandée de telle sorte, une fois le point de commutation (SP) atteint, que la différence de température (ΔT) de la température limite (TG) reste pour l'essentiel constante.
  9. Procédé selon l'une quelconque des revendications précédentes, dans lequel la température du ressort de pression à vis (F) est déterminée à l'extérieur de la chambre de rectification (135), la température étant de préférence mesurée au niveau d'un ressort de pression à vis (F) au sortir de la chambre de rectification (135), directement après la sortie du ressort à vis (F).
  10. Procédé selon l'une quelconque des revendications précédentes, dans lequel des ressorts de pression à vis (F) sont disposés à différentes distances radiales par rapport à l'axe de rotation (182) du disque de chargement (160, 170), des signaux de température séparés étant détectés pour au moins deux distances radiales et traités ensemble, les données d'un profil de dressage radial d'un disque de rectification (130, 140) étant déterminées de préférence sur la base des signaux de température séparés et/ou l'état d'usure du disque de rectification (130, 140) étant analysé sur la base des signaux de température séparés.
  11. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que des données d'opération de rectification de référence sont mémorisées dans une mémoire de l'unité de commande (220) représentant l'au moins un rapport fonctionnel dépendant de la durée entre le changement d'un paramètre de rectification et un changement de la température des ressorts de pression à vis (F) dépendant du changement de paramètre et que l'opération de rectification est commandée en tenant compte des données d'opération de rectification de référence, de préférence avec une opération de rectification prévue pour un usinage de production, au moins une opération de rectification de référence étant mise en oeuvre pour déterminer les données d'opération de rectification de référence.
  12. Rectifieuse d'extrémités de ressort (100) pour la rectification d'extrémités de ressort de ressorts de pression à vis comprenant :
    une unité de rectification (120) comportant une paire de disques de rectification avec deux disques de rectification (130, 140) pouvant tourner entre lesquels une chambre de rectification (135) est formée ;
    une unité de chargement (150), comportant au moins un disque de chargement (160, 170) pouvant tourner pour l'essentiel parallèlement à l'axe avec les disques de rectification et ayant une pluralité de logements de ressort (166) désaxés logeant respectivement un ressort de pression à vis (F) ; et
    une unité de commande (220) pour commander l'unité de chargement et l'unité de rectification ;
    sachant que les ressorts de pression à vis (F) logés dans les logements de ressort (166) peuvent être transportés successivement à travers la chambre de rectification (135) par rotation d'un disque de chargement (160, 170) disposé dans une position de travail et dont les deux extrémités de ressort du ressort de pression à vis (F) se trouvant dans la chambre de rectification (135) peuvent en l'occurrence respectivement être usinées simultanément par rectification ;
    caractérisée par :
    un système de mesure de température avec au moins un dispositif de mesure de température (190) conçu pour déterminer et transmettre pour traitement ultérieur, pendant une opération de rectification effectuée au niveau d'au moins un des ressorts de pression à vis (F), un signal de température représentant la température, le dispositif de mesure de température (190) étant disposé dans un canal d'alimentation (200, 210) appartenant à un dispositif de refroidissement pour l'air frais et/ou dans un courant d'air de refroidissement produit à travers le canal d'alimentation (200, 210).
  13. Rectifieuse d'extrémités de ressort selon la revendication 12, dans laquelle le dispositif de mesure de température (190) est disposé à l'intérieur d'un canal d'alimentation (200, 210) du dispositif de refroidissement de telle sorte que la mesure de température se produit à travers une zone d'embouchure (200, 210) du canal d'alimentation (200, 210), sachant que de préférence le canal d'alimentation (202, 212) s'étend d'en haut jusqu'au côté supérieur du disque de chargement (160) disposé dans la position de travail, l'ouverture d'embouchure (202, 212) étant disposée à une certaine distance au-dessus d'une région de sortie dans laquelle les ressorts de pression à vis (F) quittent la chambre de rectification (135), l'ouverture d'embouchure (202, 212) étant de préférence petite par rapport au diamètre du canal d'alimentation (200, 210) dans une région davantage éloignée.
  14. Rectifieuse d'extrémités de ressort selon la revendication 12 ou 13, dans laquelle le dispositif de mesure de température (190) est relié à l'unité de commande (220) pour transmettre le signal et qu'un programme de commande est activé ou activable dans l'unité de commande (220), ledit programme étant configuré de telle sorte que pour traiter le signal de température ou un signal en découlant, l'unité de commande (220) peut changer au moins un paramètre de fonctionnement de l'unité de rectification (120) et/ou de l'unité de chargement (150) en fonction du signal de température pendant l'opération de rectification et/ou le système de mesure de température comportant au moins un capteur de température mesurant en plan, de préférence sous la forme d'une caméra thermique (190), sachant que deux zones de mesure ou plus peuvent être définies de préférence dans un champ d'image de la caméra thermique (190), de sorte que la température peut être mesurée simultanément en différents points d'un ressort de pression à vis (F) ou au niveau de différents ressorts de pression à vis (F).
  15. Rectifieuse d'extrémités de ressort selon l'une quelconque des revendications 12 à 14, dans laquelle le dispositif de mesure de température (190) est placé de telle sorte qu'une mesure de température peut être effectuée pendant une opération de rectification directement après la sortie des ressorts de pression à vis (F) de la chambre de rectification (135), sachant que la rectifieuse d'extrémités de ressort comporte de préférence un panneau de protection (128) mobile fermant dans une position de fonctionnement la chambre de rectification (135) en direction des parties libres du disque de chargement (160, 170) s'emboîtant dans la chambre de rectification (135), un dispositif de mesure de température (190) étant placé au niveau du côté, opposé aux disques de rectification (130, 140), du panneau de protection (128) et/ou la rectifieuse d'extrémités de ressort étant configurée pour mettre en oeuvre le procédé selon l'une quelconque des revendications 1 à 11.
EP14729888.9A 2013-06-14 2014-06-10 Procédé de rectification d'extrémités de ressorts, et rectifieuse d'extrémités de ressorts Active EP2849919B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013211201.7A DE102013211201A1 (de) 2013-06-14 2013-06-14 Verfahren zum Schleifen von Federenden und Federendenschleifmaschine
PCT/EP2014/062025 WO2014198719A1 (fr) 2013-06-14 2014-06-10 Procédé de rectification d'extrémités de ressorts, et rectifieuse d'extrémités de ressorts

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CN105784167B (zh) * 2016-03-01 2019-09-03 上海交通大学 曲轴连杆颈随动磨削温度测量装置
CN106737148B (zh) * 2017-02-25 2018-11-09 温岭市万利轴承有限公司 一种双端面磨床及其料盘
CN107584359A (zh) * 2017-10-23 2018-01-16 南京溧水丽华弹簧厂 一种弹簧加工去毛刺处理装置
CN108145549A (zh) * 2017-12-23 2018-06-12 新昌县镜岭镇胜泰轴承配件厂 一种低噪音轴承端面打磨装置
IT201800007903A1 (it) * 2018-08-06 2020-02-06 Mole Abrasivi Ermoli Srl Mola abrasiva e metodo di controllo per una molatrice comprendente detta mola
CN113664656B (zh) * 2021-08-23 2023-11-14 福州立洲弹簧有限公司 一种弹簧断面磨削设备
CN114734315B (zh) * 2022-05-10 2023-06-09 太仓市惠得利弹簧有限公司 一种弹簧加工的端面磨簧装置
CN115091356B (zh) * 2022-06-13 2024-03-15 浙江避泰电气科技股份有限公司 电阻片研磨装置

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WO2014198719A1 (fr) 2014-12-18
EP2849919A1 (fr) 2015-03-25
CN105722640B (zh) 2018-05-15
CN105722640A (zh) 2016-06-29
DE102013211201A1 (de) 2014-12-31

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