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WO2011119099A1 - Procédé et agencement permettant d'usiner un moyeu - Google Patents

Procédé et agencement permettant d'usiner un moyeu Download PDF

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Publication number
WO2011119099A1
WO2011119099A1 PCT/SE2011/050330 SE2011050330W WO2011119099A1 WO 2011119099 A1 WO2011119099 A1 WO 2011119099A1 SE 2011050330 W SE2011050330 W SE 2011050330W WO 2011119099 A1 WO2011119099 A1 WO 2011119099A1
Authority
WO
WIPO (PCT)
Prior art keywords
machining
machine
hub
angle
center axis
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.)
Ceased
Application number
PCT/SE2011/050330
Other languages
English (en)
Inventor
Michael Larsson
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.)
CARLSTAD MACHINETOOLS AB
Original Assignee
CARLSTAD MACHINETOOLS AB
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 CARLSTAD MACHINETOOLS AB filed Critical CARLSTAD MACHINETOOLS AB
Priority to EP11759801.1A priority Critical patent/EP2550124A4/fr
Publication of WO2011119099A1 publication Critical patent/WO2011119099A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C1/00—Milling machines not designed for particular work or special operations
    • B23C1/04—Milling machines not designed for particular work or special operations with a plurality of horizontal working-spindles
    • B23C1/045—Opposed - spindle machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C1/00—Milling machines not designed for particular work or special operations
    • B23C1/08—Milling machines not designed for particular work or special operations with a plurality of vertical working-spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C1/00—Milling machines not designed for particular work or special operations
    • B23C1/12—Milling machines not designed for particular work or special operations with spindle adjustable to different angles, e.g. either horizontal or vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
    • B23Q39/02—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
    • B23Q39/021—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like
    • B23Q39/025—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with different working directions of toolheads on same workholder
    • B23Q39/026—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with different working directions of toolheads on same workholder simultaneous working of toolheads

Definitions

  • the present invention relates to a method for machining of a hub, wherein said hub shall have a rotational symmetric body with a geometrical center axis, a bottom section extending in a perpendicular plane relative the center axis and a plurality of symmetrical placed flange surfaces for blades/wings, said flange surfaces extending in a plane creating a sharp angle a with said center axis, and wherein said method comprises arranging of a converting machine with a machining table belonging thereto, arranging of said hub on the machining table through fixation of the bottom section parallel with the upper surface of the table, and machining to obtain flange surfaces as mentioned above.
  • a hub is normally manufactured in cast iron with a machinery allowance about 12 to 15 mm. Machining takes place in the "bottom", the side that is attached against the generator shaft, on the “top”, corresponding side to the “bottom” where the nose cone is attached. Machining of means for attachment of gear boxes/engines for blade turning may also be here. Machining is also made on surfaces and holes of means of attachment for the propeller blade, referred to below as "flange surfaces". These flange surfaces are in general angled, 2 to 4 degrees against the direction of the wind. This angle is to a large extent the basis for the common method for machining of blade flanges, which is as referred below.
  • Operation 1 The "bottom” and the “top” of the hub are machined in a horizontal miller. Possible machining of attachment surfaces for gear boxes/engines for blade turning on the “top” is excluded from this operation since these shall follow the same angles as the flange surfaces.
  • Operation 2 The hub is placed on a tilted circular table or on a tilted rotary fixture in front of a miller ( see fig. 1). The machined surface “the bottom” is used as fixation. Thereafter a blade flange surface is machined one at a time. Normally spindle motors with high power are used, often between 20-50 kW to obtain high milling grade, which upwards is limited by weaknesses in machine assembly respectively arising vibrations.
  • EP0032890 is known a machining arrangement with the aim to give an increased flexibility and efficiency, through a method in which machining of work pieces can be done simultaneously by several machines.
  • the machine equipment is principally directed to achieve streamlining through 180° symmetrical placing of machine equipment that performs different operations with respect to the symmetry line them between, in order to be able to machine two work pieces at the same time and through a 180° turning make two different operations on respective work piece, by which streamlining occurs thanks to simultaneously machining of the both symmetrical placed machines.
  • the machines are movable in their stand parts in three orthogonal directions and are arranged with a spindle joint that gives swiveling feature in the horizontal plane, around a vertical axis.
  • Fig.1 shows the principles for machining of a hub according to prior art
  • Fig.2 shows the principles for machining of a hub according to the invention, seen in a lateral view
  • Fig.3 shows the principles for machining of a hub according to the invention, seen from above, and
  • Fig.4 shows the principles for a machinery according to the invention.
  • a hub 1 in the form of a larger conically hub for a wind turbine, which comprises a rotational symmetric body 1 with a geometrical center axis C.
  • the hub 1 has a bottom section 10 extending in a perpendicular plane relative the center axis C and a plurality of symmetrical placed flange surfaces 12 for attachment of blades/wings (not shown).
  • the flange surfaces 12 extends in a plane that creates a sharp angle a relative the center axis C.
  • a converting machine 3 is shown with a machining table 2 belonging to it, above which said hub 1 is attached by fixation of the bottom section 10 fixed-up onto and consequently parallel with the upper surface 20 of the table 2.
  • Machining of a flange surface 12 is made by a converting machine 3 arranged with an angle machining arrangement 30-33 that enables machining of said angled flange surface 12 when said table surface 20 is horizontal.
  • the machine 3 comprises a pillar 32 that may be moved in an arrangement 34 in x-direction relative its foundation 35.
  • the pillar 32 supports a positioning means 33 that on one hand may be moved in y-direction (i.e. up and down along the pillar 32) and partly may be angled an angle a.
  • an arm 30 is arranged, that by means of a telescope arrangement gives displacement possibility in z-direction by a machining spindle 31 arranged at the arms outer end, e.g.
  • a milling tool that is driven by a spindle motor (not shown) with relatively high power, preferably exceeding 40 kW, with the aim of obtaining particularly fast/high cutting, more preferred the power of the spindle motor is exceeding 50 kW, implying that the machining power applied on the work piece at the same time exceeds 100 kW, more preferred exceeding 110 kW.
  • total power may exceed 120 kW, e.g. 180 kW, resulting in enormous fast machining.
  • figure 3 is shown that according to the preferred embodiment of the invention there are three converting machines 3, symmetrical placed around the machining table 2, and that each converting machine 3 is allowed to machine each flange surface 12. Further is indicated a control unit 5 that enables (wireless and/or wire-bound) control of all the machines 3 by one operator.
  • the equipment comprises three milling machines 3, with a tilt able arm/spindle 30/31.
  • the machines 3 are placed with 120 degrees angle in between, with the same distance in proportion to a centrally placed rig station 2,4 (see figure 2 and 3) for the hub.
  • a palette (not shown) may be used to couple the hub 1, before the unit is fastened on the rig station 2,4. After that all the flange surfaces are machined at the same time.
  • the most evident benefit with the invention is that the machining of the blade flanges is performed in less than a third of the time. Partly, all three sides are machined at the same time and, partly, all rotations of the work piece are avoided. This results in a machining time of about 28 to 30 %. If same productivity will be achieved with a traditional method it requires 3,2 machines. The investment for these 3,2 machines is 200% of the investment of an arrangement according to the invention. In addition to that, 3,2 machines naturally requires 3,2 operators. Taken together, this implies that the costs for the machining of the blade flanges on a wind turbine hub are more than halfed through the use of the invention.
  • the machine equipment according to the invention is less vibration prone and more stable (e.g. through the use of a fixation between the spindle arm 30 and the pillar 32), which enables that the total cutting may be kept very high.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

La présente invention a trait à un procédé permettant d'usiner un moyeu, lequel moyeu (1) comprend un axe central géométrique (C), une section inférieure (10) s'étendant dans un plan perpendiculaire par rapport à l'axe central (C) et une pluralité de surfaces de bride placées de façon symétrique (12) pour des pales/ailes, lesdites surfaces de bride (12) s'étendant dans un plan créant un angle aigu (a) avec ledit axe central (C), et lequel procédé comprend les étapes consistant à agencer une machine de transformation (3) et une table à usiner (2) appartenant à celle-ci, à agencer ledit moyeu (1) sur la table à usiner (2) grâce à la fixation de la section inférieure (10) parallèle à la surface supérieure (20) de la table (2), et à usiner une surface de bride (12) conformément à ce qui précède, une pluralité de machines de transformation (3) étant symétriquement agencées autour de ladite table à usiner (2), chaque machine de transformation étant agencée suivant un agencement d'usinage doté d'un angle (30-33) qui permet d'usiner ladite surface de bride en biais (12) lorsque ladite surface de table (20) est horizontale, et une pluralité de machines étant utilisées simultanément de manière à usiner une pluralité de surfaces de bride (12).
PCT/SE2011/050330 2010-03-23 2011-03-23 Procédé et agencement permettant d'usiner un moyeu Ceased WO2011119099A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11759801.1A EP2550124A4 (fr) 2010-03-23 2011-03-23 Procédé et agencement permettant d'usiner un moyeu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1000275-6 2010-03-23
SE1000275A SE535645C2 (sv) 2010-03-23 2010-03-23 Metod vid navbearbetning

Publications (1)

Publication Number Publication Date
WO2011119099A1 true WO2011119099A1 (fr) 2011-09-29

Family

ID=44673457

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2011/050330 Ceased WO2011119099A1 (fr) 2010-03-23 2011-03-23 Procédé et agencement permettant d'usiner un moyeu

Country Status (3)

Country Link
EP (1) EP2550124A4 (fr)
SE (1) SE535645C2 (fr)
WO (1) WO2011119099A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108890001A (zh) * 2018-05-09 2018-11-27 安徽瑞林精科股份有限公司 一种新型汽车软轴支架加工检测设备
CN112705765A (zh) * 2019-10-24 2021-04-27 上海熊猫机械(集团)有限公司 一种叶轮平衡铣专用设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731793A1 (de) * 1977-07-14 1979-01-18 Hurth Masch Zahnrad Carl Vorrichtung zum spanabhebenden bearbeiten der zahnenden an zahnraedern
EP0032890A1 (fr) * 1980-01-21 1981-07-29 MULLER & PESANT, SOCIETE ANONYME Perfectionnements aux machines-outils du type centre d'usinage
EP0107826A2 (fr) * 1982-10-29 1984-05-09 Wera-Werk Hermann Werner GmbH & Co. Machine-outil pour le fraisage simultané de plusieurs surfaces des extrémités libres d'une pièce
DE19518483A1 (de) * 1995-05-19 1996-11-21 Praewema Verzahnungs Schleif U Werkzeugmaschine für die stirnseitige Bearbeitung von Zahnrädern
DE10318408A1 (de) * 2003-04-23 2004-11-25 Volkswagen Ag Verfahren und Vorrichtung zur Herstellung von Kugellaufbahnen und Gleichlaufgelenknaben

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVI20070319A1 (it) * 2007-12-17 2009-06-18 Caretta Technology Srl Stazione automatizzata per il taglio e la lavorazione in genere di materiali.
US20110271501A1 (en) * 2009-01-28 2011-11-10 Mag Ias, Llc Machining center for a wind turbine hub

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731793A1 (de) * 1977-07-14 1979-01-18 Hurth Masch Zahnrad Carl Vorrichtung zum spanabhebenden bearbeiten der zahnenden an zahnraedern
EP0032890A1 (fr) * 1980-01-21 1981-07-29 MULLER & PESANT, SOCIETE ANONYME Perfectionnements aux machines-outils du type centre d'usinage
EP0107826A2 (fr) * 1982-10-29 1984-05-09 Wera-Werk Hermann Werner GmbH & Co. Machine-outil pour le fraisage simultané de plusieurs surfaces des extrémités libres d'une pièce
DE19518483A1 (de) * 1995-05-19 1996-11-21 Praewema Verzahnungs Schleif U Werkzeugmaschine für die stirnseitige Bearbeitung von Zahnrädern
DE10318408A1 (de) * 2003-04-23 2004-11-25 Volkswagen Ag Verfahren und Vorrichtung zur Herstellung von Kugellaufbahnen und Gleichlaufgelenknaben

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2550124A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108890001A (zh) * 2018-05-09 2018-11-27 安徽瑞林精科股份有限公司 一种新型汽车软轴支架加工检测设备
CN112705765A (zh) * 2019-10-24 2021-04-27 上海熊猫机械(集团)有限公司 一种叶轮平衡铣专用设备

Also Published As

Publication number Publication date
SE535645C2 (sv) 2012-10-30
EP2550124A4 (fr) 2015-06-03
EP2550124A1 (fr) 2013-01-30
SE1000275A1 (sv) 2011-09-24

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