EP3695935A1 - Vibrationsgleitschleifmaschine und verfahren zu ihrem gebrauch - Google Patents

Vibrationsgleitschleifmaschine und verfahren zu ihrem gebrauch Download PDF

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Publication number
EP3695935A1
EP3695935A1 EP20154330.3A EP20154330A EP3695935A1 EP 3695935 A1 EP3695935 A1 EP 3695935A1 EP 20154330 A EP20154330 A EP 20154330A EP 3695935 A1 EP3695935 A1 EP 3695935A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
machine
frame
finishing
tub
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.)
Pending
Application number
EP20154330.3A
Other languages
English (en)
French (fr)
Inventor
Paolo Redaelli
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3695935A1 publication Critical patent/EP3695935A1/de
Pending 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
    • 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
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/14—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding turbine blades, propeller blades or 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
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0069—Other grinding machines or devices with means for feeding the work-pieces to the grinding tool, e.g. turntables, transfer means
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies

Definitions

  • This invention refers to a vibratory finishing machine and a method for its use.
  • Rectangular tub vibrators are well known, i.e. machines for vibrofinishing long items, such as tubes, bars and, in the case of the aerospace and energy sector, turbine blades that are more or less long and/or more or less heavy.
  • a vibrator for vibratory finishing generally comprises a rectangular tub designed to contain finishing media and a frame configured to accommodate at least one workpiece to be subjected to vibratory finishing.
  • the tub is mounted on a plurality of springs connected to a base and is mechanically associated with at least one vibrator motor or to a vibrator connected to a motor by means of an appropriate connection that sets it in vibration.
  • the vibration of the tub gives a vibratory motion to the finishing media that allows the finishing operation on the workpiece.
  • the frame with the blade mounted on it is then lowered into the finishing tub with the help of a crane and fixed, for example with handwheels, to the tub itself.
  • a first problem of this known technique is that the presence of the finishing media makes it difficult to lower the frame in the tub using the crane when the blade is mounted thereon.
  • a second problem is the fact that pre-assembling and then disassembling the frame of each blade subjected to vibrofinishing is a laborious and time-consuming operation.
  • the purpose of this invention is therefore to solve the problems described by means of a vibratory finishing machine that allows to simplify and speed up the loading and unloading operations of long parts such as turbine blades.
  • a further aim of this invention is to achieve the above results in a practical and economical way.
  • a vibratory finishing machine which includes a finishing unit, said finishing unit including a tub suitable to contain finishing media, said tub being mounted on a plurality of springs connected to a base and being mechanically associated with vibratory means, the machine further comprising a frame configured to accommodate a workpiece to be subjected to vibratory finishing.
  • the frame has means for automatic clamping of the workpiece in the working position.
  • the frame can be slid vertically along suitable guides from a first mounting or loading and unloading position of the workpiece to be finished to a second position where the workpiece can be immersed in the finishing media inside the tub and vice versa.
  • One advantage of the invention is that it enables the loading and unloading of workpieces to be handled quickly.
  • An embodiment of the invention comprises a vibratory finishing machine, wherein said machine comprises a finishing unit, said finishing unit comprising a tub suitable to contain finishing media, said tub being mounted on a plurality of springs connected to a base and being mechanically associated to vibratory means, the machine further comprising a frame configured to accommodate at least one piece to be subjected to vibratory finishing, characterized in that said frame is equipped with an element suitable to support, by means of clamping or interlocking, one side of the workpiece and with a mobile component driven by a jack or pneumatic cylinder to suitable act on the opposite side of the workpiece for automatic locking in the working position of the workpiece and by the fact that the said machine presents is equipped with a fixed support structure, wherein said fixed support structure is external to said finishing unit and is associated to a mobile structure configured to bring said frame from a first mounting position of the workpiece to be processed to a second position where the workpiece is immersed in the finishing media inside the tub and vice versa.
  • the invention also provides a method for carrying out vibrofinishing operations that includes a phase of assembly on the frame of the piece to be processed with the aid of an anthropomorphic robot, said assembly phase including a fastening phase by clamping one side of the workpiece and a fastening phase of the opposite side of the workpiece by the action of a mobile component operated by a jack or a pneumatic cylinder, a phase of immersion of the frame containing the piece in the tub by means of an action on a vertical axis of a mobile structure that carries the frame, a phase of vibratory finishing of the piece by means of the action of the vibrators on the tub and a phase of unloading of the piece by lifting the mobile structure carrying the frame and subsequent release of the jack or pneumatic cylinder and gripping of the piece by the anthropomorphic robot.
  • a side view of a vibratory finishing machine is shown according to an embodiment of the invention in a first operating position, said machine being globally indicated with numerical reference 10.
  • Machine 10 includes a rectangular tub 30 suitable for containing finishing media, where said tub 30 is mounted on a plurality of springs 80 connected to a base 60.
  • the tub 30 is mechanically associated to a vibrator motor 70 which vibrates the tub 30 in order to cause the abrasive and finishing action on the work piece of the media contained in the tub itself.
  • the tub 30 is associated with vibratory means to be placed into vibration, the vibratory means including at least one vibrator motor or a vibrator, or a vibrating pack, wherein vibrating pack means a vibrator connected to others in line and finally to a motor.
  • the vibratory means including at least one vibrator motor or a vibrator, or a vibrating pack, wherein vibrating pack means a vibrator connected to others in line and finally to a motor.
  • tub 30 is represented, by way of example, with a rectangular shape, but the shape of the tub can be chosen between rectangular, triangular, ellipsoidal, circular or other geometric shape depending on the application without limiting the scope of the present invention.
  • the machine 10 further includes a frame 20 configured to accommodate at least one workpiece 40 for vibratory finishing.
  • the frame 20 has means for the automatic locking in working position of the workpiece 40 to be machined and can be slid vertically along suitable guides 50 from a first mounting position of the workpiece 40 to be machined to a second position where it is possible to immerse the workpiece 40 in the finishing media inside the rectangular tub 30 and vice versa.
  • Machine 10 has in fact a fixed support structure 50 configured to support the frame 20, said structure 50 being external to the finishing unit 90 and is associated with a mobile structure 100.
  • the means for the automatic clamping in working position of the workpiece 40 to be machined include an element 42 to support one side of the workpiece 40 to be machined and a mobile component 46 operated by a pneumatic cylinder 45 to act on the opposite side of the workpiece 40.
  • the frame 20 is always present in machine 10 and is similar to a workbench vice.
  • the frame 20 is initially in a vertical position over the tub 30.
  • the assembly of a workpiece 40 to be machined is therefore done in the following way.
  • a robot supports the blade on the left side (also called blade root) in the figures, the blade having a shape that allows its support by interlocking or clamping, for example, with a component 42 associated to the frame 20, while the opposite side of the head (i.e. the tip) of the blade remains free and distant from the other side of the frame 20 when open (see also figures 2 and 3 ).
  • the mobile component 46 By the action of a hydraulic jack 52, the mobile component 46 is pushed to the left in figure 2 and then carried on the turbine blade head, said mobile component 46 presenting a plinth 47 made, for example, in elastic and resilient polyurethane to facilitate the locking of the blade on the frame 20 (see also figures 4, 5 and 6 ).
  • the fixed support structure 50 of the frame 20 and external to the finishing group 90 has a plurality of vertical uprights 55 and the mobile structure 100 associated with the fixed support structure 50 can be operated vertically along said uprights 55 by means of the action of the respective cylinder-piston groups 110.
  • This mobile structure 100 therefore allows to perform a phase of immersion of the frame 20 containing the workpiece 40 in the tub 30 along the vertical axis, followed by a phase of vibratory finishing of the workpiece 40, said phase taking place by vibrating the tub 30 and the media contained in it, by activating the vibrator 70 (see also figures 7, 8 and 9 ).
  • a robotized system that includes three vibrofinishing machines 10 as shown above, placed in the same operating island and served by an anthropomorphic robot (not represented because known in the art), a robotized system that therefore has the ability to treat a blade every 5 minutes with obvious advantages of efficiency.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP20154330.3A 2019-02-14 2020-01-29 Vibrationsgleitschleifmaschine und verfahren zu ihrem gebrauch Pending EP3695935A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000002159A IT201900002159A1 (it) 2019-02-14 2019-02-14 Macchina per vibrofinitura e metodo per il suo impiego

Publications (1)

Publication Number Publication Date
EP3695935A1 true EP3695935A1 (de) 2020-08-19

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ID=66589718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20154330.3A Pending EP3695935A1 (de) 2019-02-14 2020-01-29 Vibrationsgleitschleifmaschine und verfahren zu ihrem gebrauch

Country Status (2)

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EP (1) EP3695935A1 (de)
IT (1) IT201900002159A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113997179A (zh) * 2021-11-08 2022-02-01 温秀梅 一种机械维修打磨设备
CN115415925A (zh) * 2022-08-10 2022-12-02 江苏汉龙航空科技发展有限公司 阻尼波超精微细抛光机床
CN116276606A (zh) * 2023-05-04 2023-06-23 浙江湖磨抛光磨具制造有限公司 一种曲轴光整机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402261A1 (de) * 1973-01-19 1974-07-25 Hisamine Kobayashi Bearbeitungsmaschine
JPS5942843U (ja) * 1982-09-14 1984-03-21 株式会社チップトン 振動バレル研磨機における選別網交換装置
EP2857144A1 (de) * 2013-10-01 2015-04-08 Paolo Redaelli Maschine zur Schleppschleifbearbeitung von mechanischen Teilen
EP3395501A1 (de) * 2016-03-28 2018-10-31 Sintokogio, Ltd. Vibrierendes trommelpolierverfahren und vibrierendes trommelpoliersystem

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402261A1 (de) * 1973-01-19 1974-07-25 Hisamine Kobayashi Bearbeitungsmaschine
JPS5942843U (ja) * 1982-09-14 1984-03-21 株式会社チップトン 振動バレル研磨機における選別網交換装置
EP2857144A1 (de) * 2013-10-01 2015-04-08 Paolo Redaelli Maschine zur Schleppschleifbearbeitung von mechanischen Teilen
EP3395501A1 (de) * 2016-03-28 2018-10-31 Sintokogio, Ltd. Vibrierendes trommelpolierverfahren und vibrierendes trommelpoliersystem

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113997179A (zh) * 2021-11-08 2022-02-01 温秀梅 一种机械维修打磨设备
CN113997179B (zh) * 2021-11-08 2022-10-11 温秀梅 一种机械维修打磨设备
CN115415925A (zh) * 2022-08-10 2022-12-02 江苏汉龙航空科技发展有限公司 阻尼波超精微细抛光机床
CN115415925B (zh) * 2022-08-10 2024-02-20 江苏汉龙航空科技发展有限公司 阻尼波超精微细抛光机床
CN116276606A (zh) * 2023-05-04 2023-06-23 浙江湖磨抛光磨具制造有限公司 一种曲轴光整机

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Publication number Publication date
IT201900002159A1 (it) 2020-08-14

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