US20060234606A1 - Device and method for surface machining a workpiece - Google Patents

Device and method for surface machining a workpiece Download PDF

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Publication number
US20060234606A1
US20060234606A1 US10/547,829 US54782906A US2006234606A1 US 20060234606 A1 US20060234606 A1 US 20060234606A1 US 54782906 A US54782906 A US 54782906A US 2006234606 A1 US2006234606 A1 US 2006234606A1
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United States
Prior art keywords
abrasive
workpiece
machined
pressure
relative
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Abandoned
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US10/547,829
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English (en)
Inventor
Goetz Lebkuechner
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.)
MTU Aero Engines AG
Evonik Operations GmbH
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Individual
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Filing date
Publication date
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Assigned to MTU AERO ENGINES GMBH reassignment MTU AERO ENGINES GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEBKUECHNER, GEOTZ
Publication of US20060234606A1 publication Critical patent/US20060234606A1/en
Assigned to EVONIK DEGUSSA GMBH reassignment EVONIK DEGUSSA GMBH CHANGE ADDRESS Assignors: EVONIK DEGUSSA GMBH
Assigned to DEGUSSA GMBH reassignment DEGUSSA GMBH CHANGE OF ENTITY Assignors: DEGUSSA AG
Assigned to EVONIK DEGUSSA GMBH reassignment EVONIK DEGUSSA GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: DEGUSSA GMBH
Abandoned legal-status Critical Current

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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
    • 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
    • B24B31/10—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 other means for tumbling of work
    • B24B31/116—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 other means for tumbling of work using plastically deformable grinding compound, moved relatively to the workpiece under the influence of pressure

Definitions

  • the present invention relates to an apparatus for surface machining a workpiece.
  • the invention further relates to a method for surface machining a workpiece.
  • Chip removal processes use the mechanical action of cutters on the workpiece and thereby cause material to be removed from the workpiece surface being machined.
  • Nontraditional material removal processes use chemical or thermal processes for the surface treatment.
  • the chip removal processes include so-called lapping.
  • the cutter used in lapping is an abrasive that consists of abrasive grains and a carrier medium.
  • lapping the surface of the workpiece to be machined is treated by means of the abrasive grains loosely distributed in the carrier medium, such that the abrasive grains are guided in random cutting paths relative to the workpiece to be machined.
  • a special form of lapping is abrasive flow machining or AFM.
  • abrasive flow machining the workpiece to be machined is usually clamped between two opposite, vertically disposed pressure pistons or pressure cylinders.
  • the abrasive is pushed back and forth between the two pressure pistons or pressure cylinders by lifting and lowering the pressure pistons and is thereby guided past the workpiece surface to be machined.
  • the removal of material from the surface being machined is determined by various process parameters, such as the pressure of the abrasive, temperature of the abrasive and viscosity or flow behavior of the abrasive. The greatest removal of material occurs in the region with the highest flow resistance.
  • the present invention relates to abrasive flow machining.
  • the prior art methods for surface machining a workpiece relating to abrasive flow machining has the drawback that the work results that can be achieved are inconsistent. This is due, in particular, to the large number and inconsistency of the process parameters responsible for the removal of material. Particularly if the workpiece to be machined has curved surfaces, there are substantial differences in the removal of material along the surfaces being machined, depending on whether the surface is facing toward or away from the flow direction or moving direction of the abrasive. Further irregularities in the removal of material according to the prior art result because the abrasive becomes hot with increasing machining time and the viscosity or flow rate of the abrasive changes as a result.
  • the apparatus has at least two opposite pressure devices, such that the workpiece to be machined is arranged between the opposite pressure devices and an abrasive can be moved past the workpiece to be machined.
  • the opposite pressure devices are pressurized with a defined pressure, such that a uniform pressure is established in the entire abrasive on every side of the workpiece to be machined.
  • the movement of the abrasive relative to the workpiece to be machined can be adjusted by a movement of the opposite pressure devices in the same direction while maintaining the uniform pressure in the abrasive.
  • the uniform pressure on all sides of the workpiece to be machined causes a uniform removal of material on all sides of the workpiece. The machining of the surface is thereby improved.
  • the apparatus has two opposite pressure devices, between which the workpiece is clamped by means of a mechanism.
  • the first, upper pressure device is mounted to a first horizontally extending cross member and another, lower pressure device to a second horizontally extending cross member.
  • the two cross members are interconnected.
  • the two pressure devices can be displaced relative to the mechanism by a vertical movement of the two cross members. This vertical movement of the two cross members can be used to adjust the movement of the abrasive relative to the workpiece to be machined.
  • the or each cross member is a controllable drive unit for ensuring a uniform flow rate of the abrasive relative to the workpiece to be machined.
  • a controllable drive unit for ensuring a uniform flow rate of the abrasive relative to the workpiece to be machined.
  • a controllable cooling and/or heating device for the abrasive is provided to ensure a uniform temperature of the abrasive.
  • the surface machining result can be further improved.
  • FIG. 1 is a highly schematic representation of an apparatus for surface machining a workpiece according to the prior art
  • FIG. 2 is a highly schematic representation of the apparatus for surface machining a workpiece according to the invention.
  • FIG. 3 is an enlarged detail of the arrangement shown in FIG. 2 with additional guide elements.
  • FIG. 1 shows a highly schematic representation of the apparatus 10 for abrasive flow machining according to the prior art.
  • two pressure cylinders 11 , 12 are disposed vertically one above the other.
  • a workpiece 13 to be machined is clamped between these two pressure cylinders 11 , 12 .
  • the workpiece 13 has a borehole, the inner surface of which is to be machined.
  • an abrasive 14 is pushed back and forth between the pressure cylinders 11 , 12 , which are arranged vertically one above the other. The movement of the abrasive 14 is effected by the pressure pistons 15 , 16 associated with the pressure cylinders 11 , 12 .
  • FIG. 2 shows an apparatus 17 for abrasive flow machining according to the invention.
  • the inventive apparatus 17 has two opposite pressure devices 18 , 19 , i.e., a first upper pressure device 18 and a second lower pressure device 19 .
  • the two pressure devices 18 , 19 are designed as cylinder-piston systems.
  • a workpiece to be machined 21 is positioned and clamped between the two pressure devices 18 , 19 by means of a mechanism 20 .
  • the workpiece 21 is a gas turbine assembly.
  • FIG. 2 shows three blades 22 of this gas turbine assembly.
  • the first upper pressure device 18 is connected to a first horizontally extending cross member 23 .
  • the second lower pressure device 19 is connected to a second, likewise horizontally extending cross member 24 .
  • the two horizontally extending cross members 23 , 24 are interconnected at opposite ends by vertically extending supports 25 , 26 .
  • the two pressure devices 18 , 19 can be pressurized with a defined pressure, such that a uniform pressure is established in the entire abrasive and thus on every side of the workpiece to be machined 21 or the blades to be machined 22 .
  • the movement of the abrasive 27 in relation to the workpiece to be machined 21 , or the blades to be machined 22 can be adjusted while maintaining the uniform pressure of the abrasive. This makes it possible to achieve a uniform removal of material along the surfaces of the workpiece 21 , even if the surfaces of the workpiece to be machined 21 are curved.
  • the cross members 23 , 24 and the supports 25 , 26 are associated with a controllable drive unit.
  • the drive unit is used to realize the movement of the unit which consists of the cross members 23 and 24 , the supports 25 and 26 and the pressure devices 18 and 19 connected to the cross members 23 , 24 relative to the mechanism 20 .
  • This controllable drive unit makes it possible to adjust a uniform flow rate of the abrasive 27 relative to the workpiece to be machined 21 .
  • a further characteristic of the invention is that the apparatus 17 has a controllable cooling and/or heating device (not depicted) for the abrasive 27 .
  • This cooling and/or heating device for the abrasive 27 is used to adjust a uniform temperature for the abrasive 27 .
  • the apparatus according to the invention thus makes it possible to uniformly adjust or control the process parameters to a constant value, i.e., the pressure of the abrasive, the flow rate of the abrasive and the temperature of the abrasive. This in turn makes it possible for the first time to obtain reproducible surface machining results using the so-called abrasive flow machining technique.
  • the uniform pressure of the abrasive ensures uniform machining of every point of the workpiece surface to be machined, even if the surfaces of the workpiece are curved.
  • FIG. 3 shows a further refinement of the invention.
  • guide elements 28 are disposed in the region of the workpiece to be machined 21 , or the blades to be machined 22 . These guide elements 28 are used to influence both the moving direction and the flow rate of the abrasive 27 . This makes it possible to locally influence the removal of material along the surface to be machined.
  • the method according to the invention is carried out using the apparatus according to the invention as described with reference to FIG. 2 and 3 .
  • the abrasive 27 is guided past the workpiece to be machined 21 , such that a uniform pressure is established in the entire abrasive 27 and thus relative to every side of the workpiece to be machined 21 .
  • the abrasive 27 is moved in relation to the workpiece to be machined 21 while maintaining this uniform pressure.
  • the flow rate and temperature of the abrasive can be controlled to constant values.
  • the guide elements 28 are used to influence a moving direction and/or the flow rate of the abrasive.
  • the apparatus and method according to the invention are particularly suitable to surface machine complex three-dimensional geometries, particularly to machine blisks of a gas turbine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US10/547,829 2003-03-05 2004-01-24 Device and method for surface machining a workpiece Abandoned US20060234606A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10309456A DE10309456A1 (de) 2003-03-05 2003-03-05 Vorrichtung und Verfahren zur Oberflächenbearbeitung eines Werkstückes
DE10309456.3 2003-03-05
PCT/DE2004/000106 WO2004078416A1 (de) 2003-03-05 2004-01-24 Vorrichtung und verfahren zur oberflächenbearbeitung eines werkstüks

Publications (1)

Publication Number Publication Date
US20060234606A1 true US20060234606A1 (en) 2006-10-19

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US10/547,829 Abandoned US20060234606A1 (en) 2003-03-05 2004-01-24 Device and method for surface machining a workpiece

Country Status (4)

Country Link
US (1) US20060234606A1 (de)
EP (1) EP1615748A1 (de)
DE (1) DE10309456A1 (de)
WO (1) WO2004078416A1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090235526A1 (en) * 2008-03-18 2009-09-24 Arno Secherling Method for the manufacture of a welded blisk drum
US20160160669A1 (en) * 2013-07-10 2016-06-09 United Technologies Corporation Abrasive flow media fixture with end contour
CN106584259A (zh) * 2016-11-24 2017-04-26 京磁材料科技股份有限公司 保养模具的设备及方法
CN107877350A (zh) * 2017-11-13 2018-04-06 郑州法图曼工具磨具有限公司 一种磨料流加工的夹持装置
EP3556484A1 (de) * 2018-04-19 2019-10-23 United Technologies Corporation Integriertes werkzeug zur abrasiven strömungsbearbeitung
CN111113251A (zh) * 2019-12-27 2020-05-08 国营第六一六厂 一种磨粒流柔性夹具
CN112643527A (zh) * 2020-12-01 2021-04-13 四川航天长征装备制造有限公司 一种三通零件交叉孔去毛刺的多孔道磨粒流加工工装
CN113770907A (zh) * 2021-09-22 2021-12-10 山西柴油机工业有限责任公司 一种高效研磨装置
CN115284160A (zh) * 2022-06-30 2022-11-04 江苏大学 一种基于空化效应的往复式磨料流抛光装置及方法
CN115464544A (zh) * 2022-10-06 2022-12-13 航发优材(镇江)增材制造有限公司 一种用于标定多种结构、多种基材的磨粒流工艺方法
CN115673998A (zh) * 2022-12-30 2023-02-03 钜亚汽车零部件科技(太仓)有限公司 一种异形多孔零件用抛光装置及其抛光方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005026511A1 (de) * 2005-06-09 2006-12-14 Robert Bosch Gmbh Ventil, insbesondere zur Verwendung als Saugventil auf der Saugseite von Kraftstoffeinspritzsystemen
DE102008014725A1 (de) * 2008-03-18 2009-09-24 Rolls-Royce Deutschland Ltd & Co Kg Verfahren zur Herstellung einer geschweißten Blisktrommel
DE102019120753B4 (de) * 2019-07-31 2022-06-02 Extrude Hone Gmbh Fließläppmaschine, Verfahren zum Ermitteln eines Materialabtrags an einem Werkstück und Verfahren zum Bestimmen der Schneidleistung eines Schleifmediums
DE102019131050A1 (de) * 2019-11-18 2021-05-20 AM Metals GmbH Fließläppvorrichtung zum Glätten einer Fläche eines Werkstückes

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US3634973A (en) * 1969-08-27 1972-01-18 Extrude Hone Corp Apparatus for abrading by extrusion and abrading medium
US3769751A (en) * 1972-06-20 1973-11-06 K Perry Workpiece finishing machine
US3802128A (en) * 1972-01-13 1974-04-09 Extrude Hone Corp Machine for abrading by extruding
US20040021474A1 (en) * 2002-07-30 2004-02-05 Intel Corporation Thin film probe card contact drive system
US20040021499A1 (en) * 2002-07-16 2004-02-05 Uchihashi Estec Co., Ltd. Alloy type thermal fuse and wire member for a thermal fuse element
US20040021476A1 (en) * 1993-09-03 2004-02-05 Farnworth Warren M. Method and apparatus for testing semiconductor circuitry for operability and method of forming apparatus for testing semiconductor circuitry for operability
US20040021475A1 (en) * 2001-06-06 2004-02-05 Atsushi Ito Wafer prober
US20040201477A1 (en) * 2003-04-10 2004-10-14 Kazuaki Matoba Display device
US6905395B2 (en) * 2001-09-21 2005-06-14 Extrude Hone Corporation Abrasive flow machining apparatus and method
US6953387B2 (en) * 2003-09-23 2005-10-11 Extrude Hone Corporation Method and apparatus for measuring flow rate through and polishing a workpiece orifice

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SU1220755A1 (ru) * 1984-12-18 1986-03-30 Предприятие П/Я Р-6564 Устройство дл абразивной обработки деталей
JPS63207558A (ja) * 1987-02-23 1988-08-26 Matsushita Electric Works Ltd 印字ワイヤ案内部材の加工装置
RU1833297C (ru) * 1989-07-06 1993-08-07 ТБФЕИГТ`лЧБОоГТЛМ@їЦЧЦјГТЦМ@ГЦВЕг@ВЦЛЧ Cпocoб oбpaбotkи дetaлeй эkctpузиpуemoй aбpaзиbhoй maccoй
RU1798136C (ru) * 1990-07-02 1993-02-28 Омский Филиал Научно-Исследовательского Института Технологии И Организации Производства Двигателей Устройство дл абразивной обработки
JP3265628B2 (ja) * 1992-07-20 2002-03-11 トヨタ自動車株式会社 砥粒流動体を用いた加工装置及び加工方法
EP1438158B1 (de) * 2001-09-21 2007-03-21 Extrude Hone Corporation Schleifmittelstrombearbeitungsvorrichtung und -verfahren

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634973A (en) * 1969-08-27 1972-01-18 Extrude Hone Corp Apparatus for abrading by extrusion and abrading medium
US3634973B1 (de) * 1969-08-27 1983-03-15
US3802128A (en) * 1972-01-13 1974-04-09 Extrude Hone Corp Machine for abrading by extruding
US3769751A (en) * 1972-06-20 1973-11-06 K Perry Workpiece finishing machine
US20040021476A1 (en) * 1993-09-03 2004-02-05 Farnworth Warren M. Method and apparatus for testing semiconductor circuitry for operability and method of forming apparatus for testing semiconductor circuitry for operability
US20040021475A1 (en) * 2001-06-06 2004-02-05 Atsushi Ito Wafer prober
US6905395B2 (en) * 2001-09-21 2005-06-14 Extrude Hone Corporation Abrasive flow machining apparatus and method
US20040021499A1 (en) * 2002-07-16 2004-02-05 Uchihashi Estec Co., Ltd. Alloy type thermal fuse and wire member for a thermal fuse element
US20040021474A1 (en) * 2002-07-30 2004-02-05 Intel Corporation Thin film probe card contact drive system
US20040201477A1 (en) * 2003-04-10 2004-10-14 Kazuaki Matoba Display device
US6953387B2 (en) * 2003-09-23 2005-10-11 Extrude Hone Corporation Method and apparatus for measuring flow rate through and polishing a workpiece orifice

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090235526A1 (en) * 2008-03-18 2009-09-24 Arno Secherling Method for the manufacture of a welded blisk drum
US20160160669A1 (en) * 2013-07-10 2016-06-09 United Technologies Corporation Abrasive flow media fixture with end contour
US9840926B2 (en) * 2013-07-10 2017-12-12 United Technologies Corporation Abrasive flow media fixture with end contour
CN106584259A (zh) * 2016-11-24 2017-04-26 京磁材料科技股份有限公司 保养模具的设备及方法
CN107877350A (zh) * 2017-11-13 2018-04-06 郑州法图曼工具磨具有限公司 一种磨料流加工的夹持装置
EP3556484A1 (de) * 2018-04-19 2019-10-23 United Technologies Corporation Integriertes werkzeug zur abrasiven strömungsbearbeitung
CN111113251A (zh) * 2019-12-27 2020-05-08 国营第六一六厂 一种磨粒流柔性夹具
CN112643527A (zh) * 2020-12-01 2021-04-13 四川航天长征装备制造有限公司 一种三通零件交叉孔去毛刺的多孔道磨粒流加工工装
CN113770907A (zh) * 2021-09-22 2021-12-10 山西柴油机工业有限责任公司 一种高效研磨装置
CN115284160A (zh) * 2022-06-30 2022-11-04 江苏大学 一种基于空化效应的往复式磨料流抛光装置及方法
CN115464544A (zh) * 2022-10-06 2022-12-13 航发优材(镇江)增材制造有限公司 一种用于标定多种结构、多种基材的磨粒流工艺方法
CN115673998A (zh) * 2022-12-30 2023-02-03 钜亚汽车零部件科技(太仓)有限公司 一种异形多孔零件用抛光装置及其抛光方法

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Publication number Publication date
DE10309456A1 (de) 2004-09-16
EP1615748A1 (de) 2006-01-18
WO2004078416A1 (de) 2004-09-16

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