EP0055648B1 - Machine pour réaliser des pièces ayant des surfaces gauches de configuration déterminée - Google Patents

Machine pour réaliser des pièces ayant des surfaces gauches de configuration déterminée Download PDF

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Publication number
EP0055648B1
EP0055648B1 EP81401948A EP81401948A EP0055648B1 EP 0055648 B1 EP0055648 B1 EP 0055648B1 EP 81401948 A EP81401948 A EP 81401948A EP 81401948 A EP81401948 A EP 81401948A EP 0055648 B1 EP0055648 B1 EP 0055648B1
Authority
EP
European Patent Office
Prior art keywords
roller
rollers
support
belt
machine
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
EP81401948A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0055648A3 (en
EP0055648A2 (fr
Inventor
Robert Gaiani
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.)
Ratier Figeac SAS
Original Assignee
Ratier Figeac SAS
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 Ratier Figeac SAS filed Critical Ratier Figeac SAS
Publication of EP0055648A2 publication Critical patent/EP0055648A2/fr
Publication of EP0055648A3 publication Critical patent/EP0055648A3/fr
Application granted granted Critical
Publication of EP0055648B1 publication Critical patent/EP0055648B1/fr
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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/16—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape
    • B24B21/165—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape for vanes or blades of turbines, propellers, impellers, compressors and the like
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/06—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving members with limited contact area pressing the belt against the work, e.g. shoes sweeping across the whole area to be ground
    • B24B21/08—Pressure shoes; Pressure members, e.g. backing belts
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/16—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape

Definitions

  • the invention relates to machines for producing parts with left surfaces of determined configuration, which comprise a group of shaping elements, in particular cylindrical rollers mounted idly in rotation individually next to each other, respectively, on carriers. rollers themselves mounted on a support movable relative to a workpiece table, so that said roller holders can move individually parallel to a common direction perpendicular to that of the axes of the rollers under the action of control means suitable such as, for example, a numerical control in which said determined left configuration is memorized, as well as means for rolling, against a part of the periphery of all of said shaping rollers, an endless strip which takes, at a configuration corresponding to the instantaneous envelope curve of the straight sections of the rollers and constitutes a tool for drilling mage of parts with variable profile.
  • control means suitable such as, for example, a numerical control in which said determined left configuration is memorized, as well as means for rolling, against a part of the periphery of all of said shaping rollers, an endless strip which takes, at a configuration
  • the object of the invention is to produce a machine of the kind in question which does not have the aforementioned drawbacks of the machine known from the American patent indicated above.
  • each roller carrier is in the form of an elongated frame which carries, at its end in the form of a yoke, the shaping roller, and which is crossed by the aforementioned common support to all the roller carriers mounted to slide in said support, the means for controlling the movements of the roller carriers being interposed between said support and each of the roller carriers.
  • each roller carrier is in the form of a frame through which the common support passes
  • the means for controlling the movements of the roller carriers, interposed between said common support and each of the roller carriers naturally find their place inside said frames, which makes it possible to produce a simple and compact overall structure, which was not the case in the aforementioned known machine.
  • the structure according to the invention makes possible a solution which was not in the known machine, namely: being able to provide each roller holder, at its other end, with an auxiliary roller, the center distance of the two rollers being immutable and identical on all the roller carriers, and being able to pass, over all the rollers, a single inextensible stretched belt elastically deformable in transverse direction only, while an abrasive strip rests against the rollers of conformation by means of said belt.
  • This advantageous solution will be described in detail below.
  • the machine takes a very particular interest if the various mobile parts which it comprises are equipped with servo-controls slaved to a programming system in which one can memorize all the characteristics of a complete cycle of machining of a surface left defined mathematically by Cartesian and / or polar coordinates; it suffices to use, for this purpose, the known principles of so-called numerically controlled machine tools.
  • the abrasion machine represents in a simplified manner, in fig. 1, essentially comprises a frame designated in its example by 1 with a bench 2 for supporting a carriage 3 workpiece carrier 4 to be machined and a bench 7 for supporting a carriage 8 carrying the machining unit 9. These two benches extend respectively in two horizontal directions perpendicular to each other.
  • the workpiece carrier 3 slides on the bench 2 under the action of an electric motor 12 via a transmission which includes a ball screw 13 rotatably mounted in the frame of the bench 2 and a nut 14 secured to the carriage 3.
  • the workpiece 4 is, in the example, an elongated part, such as a propeller blade; it is supported, by one of its ends, by a tailstock 16 fixed on the carriage 3, and by its other end, in the mandrel 17 of a rotary divider plate 18 driven by an electric motor 19.
  • the machining unit carriage 8 slides on the bench 7 under the action of an electric motor 23 via a transmission which comprises a ball screw 24 rotatably mounted in the frame of the bench 7 and d 'A nut 25 secured to the carriage 8.
  • the machining unit 9 (see also fig. 2) has an endless abrasive belt 31 which passes over support and guide members carried by the carriage 8 and comprising a guide assembly 32, a drive roller 33 driven by a motor (not shown), an idler idler roller 34, and a tensioner roller 35 subjected to the action of a spring 36. All these members are covered with a protective plate which masks them in FIG. 1, but which is assumed to be removed in FIG. 2.
  • the guide assembly 32 which constitutes the dominant part of the machine. It comprises an endless belt 38 (see also fig. 3 and 4) against which the abrasive belt 31 is in direct contact and which is itself supported and guided by two groups of cylindrical rollers, namely: a group of rollers conformation 41 and a group of auxiliary rollers 42. In the example, there are five rollers in each of the two groups, but this number could be different depending on the applications envisaged. Thus, the abrasive belt is not in direct contact with said rollers, but it bears against them by means of the tensioned endless belt 38.
  • the rollers are associated in pairs each having a shaping roller 41 and an auxiliary roller 42 individually mounted for rotation in the two ends, respectively, of a roller carrier 45 of generally elongated shape and flat section.
  • Each roller 41 or 42 is carried by a bearing 47 mounted on an axis 48 fixed between the two branches of a yoke formed on the corresponding end of the roller holder.
  • the distance between the axis of the shaping roller and the axis of the auxiliary roller is immutable, by construction, and this distance is the same on all the roller holders.
  • each roller carrier 45 has a very large recess 51.
  • each roller carrier is in the form of a very elongated frame terminated by two thin yokes between the branches of which are the shaping roller and the auxiliary roller.
  • the large sides of the frame have an irregular, but symmetrical, pentagon-shaped section, as can be seen in Figs. 4 and 6, with two right dihedral angles adjacent to their outer face, two obtuse dihedral angles and a fifth dihedral angle, the two faces of which are in contact with rollers 53 housed in a slide 54 of section in the shape of a "V" combined with that of the frame. All the slides 54 are cut in a common support 55 which extends through the openings 51 of all the roller carriers and which is provided with a flange 56 by means of which this support can be fixed on the carriage 8 (fig 2) by screws 57.
  • the belt 38 is inextensible in the longitudinal direction, but it is elastically deformable in the transverse direction, so that, when a roller carrier 45 is moved longitudinally relative to the neighboring roller carriers, the part of the belt 38 which is in contact with the shaping rollers 41 follows the envelope surface of the corresponding parts of the preferably rounded outer surface of said rollers, as can be seen on the right-hand part of FIG. 4.
  • the abrasive strip 31 which covers the belt 38 therefore has the same configuration. It will now be understood that if, by suitably programmed relative displacements of the roller carriers 45, the adhesive strip is given any suitable left configuration, in synchronism with corresponding programmed displacements of the workpiece, a tool is available. variable profile specific to the execution of any mathematically defined left surface.
  • FIG. 3 illustrates a solution by hydraulic means.
  • a cylindrical rod 61 which constitutes the piston rod 62 of a hydraulic cylinder 63 whose cylinder 64 is cut in the common support 55.
  • the roller holder is advanced and, with it, the shaping roller 41 towards the workpiece or, on the contrary, it away from it.
  • the hydraulic circuits have not been shown in detail, since this is a well known technique. It has been indicated, in figs. 3 and 6, a linear sensor 72 whose rule 73 is secured to the common support 55 and the slider 74 secured to the piston rod 61 of the jack, to ensure the closing of the "control loop".
  • the machine is equipped with a digital control installation in which the characteristics of the left surface to be machined are recorded and which automatically controls the motor 12 for moving the workpiece carrier 3, the motor 19 for rotating the workpiece. machine 4, the motor 23 for moving the carriage 8 machining unit holder 9, as well as controlling the servo-valves supplying the hydraulic cylinders for controlling the movement of the roller carriers 45.
  • Figs. 7 and 8 illustrate a solution by mechanical means to ensure the movement of the roller carriers 45, in the form of a control by ball screw 81 secured to each of the roller carriers 45 and engaged in a conjugate threaded bush 82 mounted madly in rotation, without axial displacement, in the common fixed support 55A for this purpose suitably hollowed out also.
  • the threaded sleeve 82 has an extension 84 in the form of a grooved pulley over which passes a toothed belt 85 which also passes over another grooved pulley 86 fixed on the shaft 87 of a small electric motor 88 carried by the common fixed support 55.
  • the toothed belt transmissions 85 associated with the different roller carriers are offset from one another (see fig. 8).
  • the operation of the machine equipped with this device is similar to that of the machine equipped with the hydraulic device described above.
  • the digital control installation controls the electric motors 88 to rotate them, either in one direction or the other and thus move the different roller carriers 45 forward or backward, in the same way as by the hydraulic cylinders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP81401948A 1980-12-23 1981-12-08 Machine pour réaliser des pièces ayant des surfaces gauches de configuration déterminée Expired EP0055648B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8027284 1980-12-23
FR8027284A FR2496533A1 (fr) 1980-12-23 1980-12-23 Machine pour realiser des pieces ayant des surfaces gauches de configuration determinee

Publications (3)

Publication Number Publication Date
EP0055648A2 EP0055648A2 (fr) 1982-07-07
EP0055648A3 EP0055648A3 (en) 1982-08-11
EP0055648B1 true EP0055648B1 (fr) 1984-08-08

Family

ID=9249380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401948A Expired EP0055648B1 (fr) 1980-12-23 1981-12-08 Machine pour réaliser des pièces ayant des surfaces gauches de configuration déterminée

Country Status (5)

Country Link
US (1) US4443977A (enrdf_load_stackoverflow)
EP (1) EP0055648B1 (enrdf_load_stackoverflow)
JP (1) JPS57127665A (enrdf_load_stackoverflow)
DE (1) DE3165452D1 (enrdf_load_stackoverflow)
FR (1) FR2496533A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029129A1 (de) * 1990-09-13 1992-03-19 Bayerische Motoren Werke Ag Verfahren zum schleifen von nocken, sowie vorrichtung hierzu

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5133156A (en) * 1990-04-19 1992-07-28 Penn Keystone Corporation Adjustable belt sander for wood
US5367866A (en) * 1990-10-05 1994-11-29 J. D. Phillips Corporation Crankpin grinder
US5210978A (en) * 1992-05-26 1993-05-18 J. D. Phillips Corporation Nose piece retainer for abrasive belt backing shoe
US6135859A (en) * 1999-04-30 2000-10-24 Applied Materials, Inc. Chemical mechanical polishing with a polishing sheet and a support sheet
AUPQ777500A0 (en) * 2000-05-26 2000-06-22 Price, John Lewis Grinding apparatus
US6749491B1 (en) * 2001-12-26 2004-06-15 Lam Research Corporation CMP belt stretch compensation apparatus and methods for using the same
US8784162B1 (en) * 2008-06-27 2014-07-22 Professional Tool Manufacturing Llc Sharpener for cutting tools
EP2712702B1 (de) * 2012-10-01 2014-12-03 Supfina Grieshaber GmbH & Co. KG Bandfinishvorrichtung, Bandfinishsystem und Verfahren zur Herstellung einer Bandfinishvorrichtung
RU2615964C1 (ru) * 2015-12-21 2017-04-11 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Владимирский государственный университет имени Александра Григорьевича и Николая Григорьевича Столетовых" (ВлГУ) Способ гибкого ленточного шлифования
CN113319705A (zh) * 2021-07-01 2021-08-31 陈国安 一种具有打磨角度调整功能的砂带机及其使用方法
CN120170595A (zh) * 2025-05-23 2025-06-20 宁波科宇航天电子科技有限公司 一种飞机的机翼前缘蒙皮加工装置

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US1082670A (en) * 1909-01-11 1913-12-30 Olmedo Cortez Wysong Method of polishing curved surfaces.
US2618913A (en) * 1950-02-23 1952-11-25 George H Plancon Abrading machine shoe construction
US2934279A (en) * 1955-06-29 1960-04-26 Minnesota Mining & Mfg Production of groundwood pulp
FR1192559A (fr) * 1958-02-11 1959-10-27 Maschb Jonsdorf Veb élément presseur pour machines à polir à bande et machines à meuler humides comportant une bande de meulage tournante
US3022611A (en) * 1959-03-11 1962-02-27 Sundstrand Corp Contour grinding machine
US3167889A (en) * 1962-02-07 1965-02-02 Walter Jacobi & Sons Inc Apparatus for finishing wood and the like
US3283447A (en) * 1964-03-19 1966-11-08 Hiram W Cretsinger Platen for contour sanding, grinding and polishing
US3374583A (en) * 1965-09-20 1968-03-26 Walter Jacobi & Sons Inc Apparatus for finishing surfaces
US3408775A (en) * 1966-02-16 1968-11-05 Carborundum Co Belt sanding and polishing machine
DE1921566A1 (de) * 1969-04-28 1970-12-03 Walter Tilleke Druckbalken fuer Schleifmaschinen
US3691698A (en) * 1970-11-23 1972-09-19 Sundstrand Engelberg Abrasive element dimension sensing mechanism
DE2320345A1 (de) * 1973-04-21 1974-11-07 Karl Heesemann Bandschleifmaschine
US4145846A (en) * 1977-06-22 1979-03-27 The Cessna Aircraft Company Contour belt grinding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029129A1 (de) * 1990-09-13 1992-03-19 Bayerische Motoren Werke Ag Verfahren zum schleifen von nocken, sowie vorrichtung hierzu

Also Published As

Publication number Publication date
FR2496533A1 (fr) 1982-06-25
FR2496533B1 (enrdf_load_stackoverflow) 1983-11-18
EP0055648A3 (en) 1982-08-11
JPS57127665A (en) 1982-08-07
DE3165452D1 (en) 1984-09-13
EP0055648A2 (fr) 1982-07-07
US4443977A (en) 1984-04-24

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