EP3015221B1 - Machine de polissage mécano-chimique multiple - Google Patents

Machine de polissage mécano-chimique multiple Download PDF

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Publication number
EP3015221B1
EP3015221B1 EP15190971.0A EP15190971A EP3015221B1 EP 3015221 B1 EP3015221 B1 EP 3015221B1 EP 15190971 A EP15190971 A EP 15190971A EP 3015221 B1 EP3015221 B1 EP 3015221B1
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EP
European Patent Office
Prior art keywords
vat
machine
finishing
workpiece holding
media
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Application number
EP15190971.0A
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German (de)
English (en)
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EP3015221A1 (fr
Inventor
Paolo Redaelli
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Individual
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Individual
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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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0023—Other grinding machines or devices grinding machines with a plurality of working posts
    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/003—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor whereby the workpieces are mounted on a holder and are immersed in the abrasive material
    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
    • B24B31/0224—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels the workpieces being fitted on a support
    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/06—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving oscillating or vibrating containers
    • B24B31/064—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving oscillating or vibrating containers the workpieces being fitted on a support

Definitions

  • the present invention refers to a machine for drag finishing.
  • mass finishing of metal (and non-metal) surfaces is based on the dynamics relating to the way in which the mass consisting of the finishing media and the pieces is placed in relative motion.
  • work pieces are fixed to suitable supporting devices such as carrying pieces mandrels.
  • a finishing media which can be constituted by components such as, for example, abrasive granules of appropriate size and shape, polymer materials, ceramics, plastics, or materials having synthetic or natural origin.
  • Processing is done usually at high speed (at adjustable intensity) giving place to a certain contact pressure between the workpiece and processing media which leads to the desired result.
  • the pieces are mounted on a rotating head that has a plurality of piece-holder groups each consisting of a spindle that is able, in turn, to accommodate a plurality of pieces placed along a circumference.
  • a machine of the type described may be provided with a rotary head provided with three spindles holding pieces, each of which is adapted to support 12 pieces.
  • the machine can be set in motion by rotating the rotary head in a direction of rotation, while the spindles holding pieces may be made to rotate in an opposite direction.
  • a control panel allows the setting of the various operating parameters of the machine.
  • a machine for drag finishing of mechanical workpieces comprising a rotary head, the rotary head having an axis of rotation and carrying a plurality of rotating workpiece holding elements arranged along a circumference around the axis of rotation and wherein each rotating workpiece holding element is adapted to support at least one workpiece to be finished, wherein the machine further comprises vats for the containment of finishing media, positioned around the axis of rotation of the rotary head.
  • a first problem of the prior art is given by the fact that, in case that a piece has to be subjected to two or more finishing media such as, for example, one for roughing, one for smoothing and one for polishing, if a single machine with a single vat is provided, it becomes necessary to replace the media for roughing with the one for smoothing, subsequently, the one for smoothing with the one for polishing, which results in an increase of time and costs.
  • An object of the present invention is to overcome the above mentioned drawbacks, by providing a machine for the finishing of surfaces that allows to couple versatility of use, rapidity of execution with reduced costs and bulk.
  • Another purpose is to achieve said result in a practical and economical way.
  • the invention offers numerous advantages, among which for example, the fact of being able to perform multiple machining processes, namely processes articulated over multiple passages of the workpieces within different types of media, wherein each of the media is contained in a respective containment vat.
  • the machine according to an aspect of the invention can operate a deburring process, followed by a smoothing process, followed by a polishing process.
  • the invention provides also a method for drag finishing of mechanical pieces using a machine according to the preceding claims, the method comprising the following steps:
  • FIG 1 a machine for surface treatment of mechanical pieces, according to the present invention, globally indicated by the reference number 10, is shown.
  • the machine 10 comprises a main rotary head 12 which can be set in rotation, for example, by means of a geared motor unit 14 which sets in rotation the rotary head main 12 about an axis of rotation A-A (shown in Figures 1-2 ) and that, in most applications, is a vertical axis.
  • a geared motor unit 14 which sets in rotation the rotary head main 12 about an axis of rotation A-A (shown in Figures 1-2 ) and that, in most applications, is a vertical axis.
  • the motorized rotary head 12 carries a plurality' of rotating workpiece elements 16, each rotating workpiece element 16 being adapted to support at least one workpiece to be machined and set in rotation by a relative geared motor unit 14.
  • the machine 100 can be set in motion by rotating the rotary head 12 in a direction of rotation, while the rotating workpiece elements 16 can be rotated in the opposite direction.
  • each rotating workpiece element 16 instead of carrying a single work piece, carries a multi-spindle head, where each multi-spindle head carries a plurality of satellite spindles.
  • multi-spindle heads 18 are such that each multi-spindle head 18 carries a plurality of satellite spindles.
  • the main head 12 rotates according to a determined direction of rotation (in the attached drawings clockwise when viewed from above), the multi-spindle heads 18 rotate in the opposite direction (e.g.: counterclockwise) and, finally, the single spindle of each head multi-spindle rotate in the direction opposite to that of rotation of the multi-spindle heads 18 (thus, for example, clockwise).
  • the machine 100 further comprises at least two vats 50,52,54,56 for the containment of finishing media.
  • the number of containment vats for the finishing media can be four, six or eight or even another number.
  • Vats 50,52,54,56 for the containment of finishing media are positioned around the axis of rotation (A-A) of the motorized rotating head 12, for example assuming a corolla configuration such as the one illustrated in the various figures attached to this description.
  • vats 50,52,54,56 for the containment of finishing media are positioned in such a way that the machine can immerse the piece carried by a respective holding element pieces 16 within the finishing media of a respective containment vat.
  • the vats 50,52,54,56 for containment of the finishing media are positioned in such a way that the machine can immerse the pieces carried by a specific multi-spindle satellite head 18 inside the finishing media.
  • vats 50,52,54,56 for the containment of finishing media are adapted to receive a different finishing media, as best illustrated in the various embodiments discussed hereinafter.
  • vats 50,52,54,56 are placed on a flat surface, such as a vat floor 30, which can be placed in relative motion with respect to the rotating head 12 along a vertical direction.
  • means are provided to raise and lower the vat floor 30 according to the directions indicated with arrows F1 and F2 in Figure 4 , for example by use of a hydraulic platform for lifting and lowering of the vat floor 30.
  • vat floor 30 may be fixed and the rotating head 12 can be provided with lifting and lowering means.
  • vats 50,52,54,56 for containment of finishing media can, in turn, be set in rotation by known means or may be devoid of rotary movement, according to the different embodiments of the invention.
  • Each machine may comprise a loading station for the work pieces on the relative spindles pieces and a station/area or discharge portion of the machined parts.
  • the stations/areas or portions of the loading and unloading can be coincident, as in the case indicated with the reference numeral 20 in Figures 7-9 , or placed in the same area of access to the machine or placed each in its own dedicated area.
  • loading and unloading of the pieces can be performed by using one or more anthropomorphic robot (s) (not shown for simplicity) adapted to pick pieces, whose surfaces are to be machined, by a counter, a technologic tray or from another parts storage and to mount them on the piece-carrying spindles.
  • anthropomorphic robot s
  • a technologic tray or from another parts storage and to mount them on the piece-carrying spindles.
  • the anthropomorphic robot 19 is part of the machine, such as the loading and unloading station 20.
  • the pieces to be subjected to finishing operations are loaded onto the respective piece-carrying spindles, for example by use of an anthropomorphic robot or by other known means.
  • the rotary head is rotated and the piece-carrying spindles are brought on the vertical of vat inside which the workpieces are to be immersed.
  • vat floor 30 is raised (or alternatively the rotary head 12 is lowered) until the pieces are brought inside the media in the respective vats and the spindles are rotated for a predetermined time depending on the required processing.
  • the vat floor 30 is lowered (or alternatively the rotary head 12 is raised) and the rotary head 12 is free to rotate in order to bring the workpieces over other vats containing, in general, a different finishing media to make a further stage of processing.
  • This process ends when the pieces have undergone all processing steps envisaged and are brought from the rotating head 12 to the station/area or discharge portion therein and discharged from the machine.
  • Figures 7-9 illustrate some operating phases of a machine 100, according to a further embodiment of the invention.
  • the machine 100 has three multi-spindle rotating heads 18 and six vats containing finishing media, in particular subdivided into two sets of three vats each.
  • media for smoothing is provides -and in the second set of vats 52 a media for polishing is provided.
  • the machine 100 is therefore able to perform machining processes in two phases, such as A) smoothing and B) polishing, quickly and in a very small space.
  • the vat floor 30 is raised and the pieces carried by multi-spindle heads 18 are immersed in the smoothing media and the machine performs the rotations required for the required processing.
  • vat floor 30 is lowered and a further rotation of the rotary head 12 by 45° clockwise, carries the three multi-spindle heads 18 over the polishing vats 52 ( Figure 9 ).
  • FIGS. 10-11 illustrate some operating phases of a machine 110 according to still another embodiment of the invention.
  • the machine 110 is provided with four multi-spindle rotating heads 18 and eight vats containing finishing media, in particular subdivided into two sets of four vats each.
  • the machine 110 is also able to perform machining processes in two phases, such as A) smoothing and B) polishing, quickly and in a very small space.
  • vat floor 30 is lowered and a further rotation of the head 12 by 45° clockwise, carries the four multi-spindle heads 18 over polishing vats 52 (in this case indicated by dashed lines in Figure 11 ).
  • Figures 12-14 illustrate some operating phases of a machine 110' according to still another embodiment of the invention.
  • the machine 110' is provided with four multi-spindle rotating heads 18 and eight finishing vats, subdivided into two sets of two vats each and in a set of four vats.
  • a smoothing media is inserted and in the second set of two vats 52 a polishing media is inserted, while in the third set of four vats 54 a roughing media is inserted.
  • the machine 100' is able to perform processes in several stages, such as: A1) roughing, A2) roughing, B) smoothing, and C) polishing, quickly and in a very small space.
  • a possible operation of the machine 100' is the following.
  • the multi-spindle heads I and II are then immersed in the roughing vats 54 for a first roughing operation.
  • the multi-spindle heads III and IV, previously loaded, are immersed in the smoothing vats 50 for the respective processing.
  • the main head 12 is rotated by 45° clockwise when viewed from above ( Figure 13 ) and the multi-spindle heads I and II are carried within other roughing vats 54 for a second roughing phase, while the multi-spindle heads III and IV are immersed in the polishing vats 52 to perform the respective phase.
  • the main head 12 is progressively rotated to carry the pieces supported by the multi-spindle heads 18 in the position of loading/unloading and replace them with new workpieces.
  • the main head 12 is then rotated to carry the new work pieces supported by the multi-spindle heads III and IV, in the positions indicated in figure 14 , namely for the first roughing step, while the pieces supported by the multi-spindle heads I and II are brought in correspondence of the polishing tanks 52 for the respective phase.
  • the described cycle can then be repeated any number of times, depending on the machining requirements.
  • Figure 15 illustrates a further embodiment of a machine according to the invention.
  • the machine 120 is provided with eight multi-spindle rotating heads 18 and eight finishing vats.
  • eight sets of vats are provided, each set comprising four vats each, namely four smoothing vats 50 and four polishing vats 52.
  • the machine 120 is therefore able to perform machining processes in two phases, such as A) smoothing and B) polishing quickly and in a very small space.
  • the vat floor 30 is lowered and the main head 12 is rotated, for example clockwise, to bring the new work pieces on the respective vats.
  • Figure 16 illustrates still another embodiment of a machine 130 according to the invention.
  • the machine 130 is also provided with eight multi-spindle rotating heads 18 and eight finishing vats.
  • eight sets of vats are provided, each set comprising two vats each, namely two smoothing vats 50, two polishing vats 52, two roughing vats 54 and two fine smoothing vats 56 for the respective operations.
  • two multi-spindle heads 18 are on the smoothing vats 50, two multi-spindle heads 18 are on the fine polishing vats 52, two multi-spindle heads 18 are on the roughing vats 54 rand two multi-spindle heads 18 are on the polishing vats 50.
  • An embodiment of the invention provides to apply, to each piece carrying spindle, means for carrying said spindle in a working position inside the respective vat that is eccentric with respect to the center of the vat, according to the description of the patent applications ITMI2013A001616 and EP14185788 .
  • a single spindle for each piece carrying element can be mounted on a frame which can move horizontally towards an eccentric position inside the respective vat.
  • vats 50,52,54,56 for containment of finishing media can be static and/or rotating and/or vibrating.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (8)

  1. Machine pour la finition par traînage de pièces mécaniques comprenant une tête rotative unique (12), la tête rotative unique (12) ayant un axe de rotation (A-A) et portant une pluralité d'éléments rotatifs de maintien de pièces (16) agencés le long d'une circonférence autour de l'axe de rotation (A-A) et dans laquelle chaque élément rotatif de maintien de pièces (16) est adapté pour supporter au moins une pièce à finir, dans laquelle la machine comprend en outre une pluralité de cuves (50, 52, 54, 56) pour le confinement de milieux de finition, positionnées en corolle autour de l'axe de rotation (A-A) de la tête rotative unique (12), et dans lequel chaque élément rotatif de maintien de pièce (16) est configuré pour immerger les pièces à l'intérieur des milieux de finition, dans lequel au moins une cuve (50) contient un premier type de milieu de finition et au moins une cuve (52) contient un second type de milieu de finition et dans lequel la machine comprend en outre une station unique de chargement et de déchargement (20) et un robot anthropomorphe (19) dans la station unique de chargement et de déchargement (20).
  2. Machine selon la revendication 1, dans laquelle chaque élément rotatif de maintien de pièce (16) comprend une tête multibroche (18).
  3. Machine selon la revendication 1, dans laquelle au moins une cuve (50) contient un milieu de lissage et au moins une cuve (52) contient un milieu de polissage.
  4. Machine selon la revendication 3, dans laquelle au moins une cuve (54) contient un milieu de dégrossissage.
  5. Machine selon la revendication 1, dans laquelle des moyens sont prévus pour communiquer aux cuves (50, 52, 54, 56) pour le confinement des médias de finition et à la tête rotative principale (12) un mouvement relatif de rapprochement et d'éloignement l'un de l'autre.
  6. Machine selon la revendication 1, dans laquelle chaque élément rotatif de maintien de pièce (16) est muni de moyens pour amener ledit élément rotatif de maintien de pièce (16) dans une position de travail à l'intérieur de la cuve respective, la position de travail étant excentrée par rapport au centre de la cuve elle-même.
  7. Machine selon la revendication 1, dans laquelle les cuves (50, 52, 54, 56) pour le confinement des supports de finition peuvent être statiques et/ou rotatives et/ou vibrantes.
  8. Procédé de finition par traînage de pièces mécaniques utilisant une machine selon les revendications précédentes, le procédé comprenant les étapes suivantes :
    - chargement d'au moins un élément rotatif de maintien de la pièce (16) ;
    - immerger les pièces chargées sur les éléments rotatifs de maintien de pièces (16) dans une première cuve contenant un premier milieu de finition ;
    - effectuer une première opération de finition dans la première cuve;
    - extraire de la première cuve les pièces chargées sur l'élément rotatif de maintien des pièces (16);
    - faire tourner la tête rotative principale (12) de la machine pour amener l'élément rotatif de maintien de la pièce (16) au-dessus d'une deuxième cuve contenant un deuxième milieu de finition ;
    - immerger les pièces chargées sur l'élément rotatif de maintien des pièces (16) dans la seconde cuve et effectuer une seconde opération de finition;
    - extraire de la seconde cuve les pièces chargées sur l'élément rotatif de maintien de pièces (16);
    - décharger l'élément rotatif de maintien de la pièce (16).
EP15190971.0A 2014-11-03 2015-10-22 Machine de polissage mécano-chimique multiple Active EP3015221B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20141876 2014-11-03

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EP3015221A1 EP3015221A1 (fr) 2016-05-04
EP3015221B1 true EP3015221B1 (fr) 2022-02-09

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105881184B (zh) * 2016-05-20 2018-02-06 五邑大学 一种工件研磨行为全局可控的抛光装置
WO2018082776A1 (fr) * 2016-11-03 2018-05-11 Swisssurface.Ch Sa Dispositif de traitement de surface et procédé de traitement de surface utilisant un tel dispositif
CN110434732B (zh) * 2018-05-02 2021-01-26 郭锡池 多转轴研磨设备
CN111266974A (zh) * 2019-03-22 2020-06-12 深圳市捷牛智能装备有限公司 多工位联动打磨设备
EP3795297A1 (fr) * 2019-09-20 2021-03-24 Haug Intelligente Poliersysteme GmbH Installation de polissage mécano-chimique
CN111230717B (zh) * 2020-01-14 2022-03-08 江苏科技大学 一种工件内孔及外表面的毛刺去除装置
CN111571417A (zh) * 2020-06-04 2020-08-25 苏州椿桔五金制品有限公司 表壳打磨设备及其应用
CN114800238A (zh) * 2022-05-11 2022-07-29 北京博海康源医疗器械有限公司 一种剪切增稠去除微型手术刀毛刺的方法及去除装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034515A (en) * 1976-04-19 1977-07-12 Ietatsu Ohno Vertical grinder
US4280302A (en) * 1978-11-06 1981-07-28 Ietatsu Ohno Grinding method and apparatus
DE19921874B4 (de) * 1999-05-12 2005-09-01 Maschinen- Und Stahlbau Julius Lippert Gmbh & Co. Kg Vorrichtung zum Oberflächenschleifen von Flachgeschirr
DE102007022392A1 (de) * 2007-05-10 2009-05-20 HÖPP, Hardy Poliermaschine

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