WO1996009913A1 - Table porte-piece destinee a des machines-outils, a des machines universelles d'usinage et analogues - Google Patents

Table porte-piece destinee a des machines-outils, a des machines universelles d'usinage et analogues Download PDF

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Publication number
WO1996009913A1
WO1996009913A1 PCT/EP1995/003739 EP9503739W WO9609913A1 WO 1996009913 A1 WO1996009913 A1 WO 1996009913A1 EP 9503739 W EP9503739 W EP 9503739W WO 9609913 A1 WO9609913 A1 WO 9609913A1
Authority
WO
WIPO (PCT)
Prior art keywords
platform
wings
machine tools
diameter
similar
Prior art date
Application number
PCT/EP1995/003739
Other languages
English (en)
Inventor
Roberto Colombo
Original Assignee
Technai Team S.R.L.
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 Technai Team S.R.L. filed Critical Technai Team S.R.L.
Priority to AU36520/95A priority Critical patent/AU3652095A/en
Publication of WO1996009913A1 publication Critical patent/WO1996009913A1/fr

Links

Classifications

    • 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
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means

Definitions

  • the present invention concerns a worktable for machine tools, machining centres and the like for the turning and milling of workpieces, of the type comprising a platform of predetermined diameter supported for rotation about an axis by a base, and rotatable by drive means.
  • machining especially when pieces are of medium or large dimensions, demands that several turning operations, and a similar number of milling operations, are performed with a single positioning of the piece.
  • turning operation is understood to mean working in which the platform is rotated at a predetermined working speed and is controlled by a velocity feed-back system, in the so-called mandrel mode.
  • milling operation means those operations in which the platform is rotated at a predetermined speed, for example of advance, in a position feed-back system, in the so- called axial mode.
  • the object of the present invention is to devise a platform having structural and functional characteristics which satisfy the aforesaid requirement, while at the same time being of exceptionally simple construction.
  • This object is achieved by means of a work table of the specified type, characterised in that the drive means comprise a three-phase synchronous electric motor co ⁇ axial with the platform and in direct contact with it.
  • Figure 1 is a schematic perspective view in partial section of a table according to the invention.
  • Figure 2 is a schematic view of a detail of the table of Figure 1.
  • the reference numeral 1 indicates generally a work table for the turning and milling particularly of work pieces of medium and large dimensions.
  • the table 1 comprises a base 2 and a circular platform 3 of a predetermined diameter D1 selected between medium and large, starting from 1(300 rrm and suitable to withstand a torque of at least 3000 Nm.
  • the platform has a diameter Dl of 2500 mm.
  • the platform 3 is supported by the base 2 for rotation about a vertical axis X-X by means of rolling bearings 4 and is rotatable by drive means 5.
  • the transducer 6 preferably has a high resolution section 7 and a low resolution section 8.
  • a control unit 9 completes the table.
  • the drive means 5 for the table of the invention comprises a three-phase synchronous electric motor 10 which is coaxial with the platform 3.
  • the motor 10 is of a type known in itself which has already found various technical application. It is, for example, used to rotate telescopes for astronomical observation at very low velocities. A linear version is also used to drive high-speed transport means.
  • the motor 10 has a stator 11 fixed directly to the base 2 and a rotor 12 fixed directly to the platform 3, such that the motor is in direct contact with the platform itself.
  • the stator 11 comprises a predetermined number of C- section annular sectors 13 open towards the axis X-X and defining a cylindrical outer wall 14, having a diameter D2 substantially equal to the diameter Dl of the platform, and two flanges 15 and 16, respectively upper and lower, the lower flange being fixed to the base 2.
  • Windings 17 and 18 are positioned against the two flanges 15 and 16 respectively and define a cavity 19 between them.
  • Each annular sector 13 comprises two parallel plates 20 and 21, formed substantially as sectors of a circular ring and respectively constitute the C-shape flanges 15 and 16.
  • the two opposite circumferential ends of the plates 20 and 21 are attached to two identical radial spacer walls 22.
  • the two walls converge on the axis X-X at a pre ⁇ determined angle to each other, for example 30°.
  • the rotor 12 is in the form of a circular ring 23 and includes an outer annular portion 24 which carries, on its opposite faces, a plurality of magnets 25 constituting the poles, and which extends into the cavity 19 so as to define opposing air gaps with the windings 17 and 18.
  • the ring 23 further comprises an inner annular portion 26 which projects from the cavity 19 and is attached to the platform 3.
  • the control equipment 9 includes a power supply 27 connected to supply the motor 10 and a numeric control unit 28, having a mandrel control section 29 for controlling the platform during turning operations in a velocity feed-back system, and a control section 30 in the axial mode, for controlling the platform during milling operations in a position feed-back system.
  • the power supply 27 is connected to the unit 28 to receive a reference signal.
  • a switch 31 connects the supply 27 alternately to the section 29 and to the section 30 of the unit 28.
  • the numeric control unit 28 and the power supply 27 are connected to the transducer 6 to receive a feedback control signal.
  • a switch 32 connects the numeric control unit 28 and the power supply 27 alternately to the high resolution part 7 and to the low resolution part 8 of the transducer 6 as necessary.
  • the table according to the invention has the advantage of an exceptionally simple construction so that practically indefinite operation can be expected without the necessity of periodic overhauling, maintenance and adjustment.
  • the platform is in fact driven to rotate constantly without play and without the backlash typical of transmissions including kinematic chains with reduction gears, used until now.
  • the table according to the invention can, in addition, be an accessory for use as a machine tool or machining centre, or as an integral part of it, enabling improved performance in either case.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)
  • Multi-Process Working Machines And Systems (AREA)
  • Turning (AREA)

Abstract

Cette table porte-pièce (1), destinée à des machines-outils, à des machines universelles d'usinage et analogues, et servant au tournage et au fraisage, comprend une plate-forme (3) de diamètre prédéterminé, supportée de manière rotative autour d'un axe (X-X) par une base (2) et mise en rotation par un moteur (10) électrique synchrone triphasé, coaxial avec la plate-forme (3) et en contact direct avec celle-ci.
PCT/EP1995/003739 1994-09-29 1995-09-22 Table porte-piece destinee a des machines-outils, a des machines universelles d'usinage et analogues WO1996009913A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU36520/95A AU3652095A (en) 1994-09-29 1995-09-22 A work table for machine tools, machining centres and similar

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI941983A IT1270101B (it) 1994-09-29 1994-09-29 Tavola portapezzo per macchine utensili, centri di lavorazione e simili
ITMI94A001983 1994-09-29

Publications (1)

Publication Number Publication Date
WO1996009913A1 true WO1996009913A1 (fr) 1996-04-04

Family

ID=11369618

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/003739 WO1996009913A1 (fr) 1994-09-29 1995-09-22 Table porte-piece destinee a des machines-outils, a des machines universelles d'usinage et analogues

Country Status (3)

Country Link
AU (1) AU3652095A (fr)
IT (1) IT1270101B (fr)
WO (1) WO1996009913A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1046461A2 (fr) * 1999-04-21 2000-10-25 DECKEL MAHO GmbH Machine-outil universelle
US6886225B2 (en) * 2002-09-24 2005-05-03 O.M.V. Officine Meccaniche Venete S.R.L. Worktable for numerical control machine tools
JP2015024452A (ja) * 2013-07-24 2015-02-05 通雄 渡邊 工作機械用テーブル装置
CN110480032A (zh) * 2019-08-14 2019-11-22 徐州光圆国腾矿山设备制造有限公司 一种立式车床及其工作台安装装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU431970A1 (fr) * 1972-12-18 1974-06-15
JPS57132936A (en) * 1981-02-06 1982-08-17 Dai Ichi Seiko Co Ltd Turn table
EP0340681A2 (fr) * 1988-05-05 1989-11-08 Friedrich Deckel Aktiengesellschaft Dispositif de tournage pour les machines à forer ou à fraiser
DE4128276A1 (de) * 1990-08-27 1992-03-05 Mitutoyo Corp Rotationsvorrichtung
JPH04289058A (ja) * 1991-03-14 1992-10-14 Matsuura Kikai Seisakusho:Kk 工作機械用回転割出テーブル
US5196749A (en) * 1991-09-23 1993-03-23 Rem Technologies, Inc. Stator support and positioning structure for a dynamoelectric machine
RU2028906C1 (ru) * 1990-04-04 1995-02-20 Краснодарский политехнический институт Стол токарно-карусельного станка
JPH1129756A (ja) * 1997-07-10 1999-02-02 Wako Sangyo Kk 接着剤およびこの接着剤を用いて形成されたフィルタエレメント

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU431970A1 (fr) * 1972-12-18 1974-06-15
JPS57132936A (en) * 1981-02-06 1982-08-17 Dai Ichi Seiko Co Ltd Turn table
EP0340681A2 (fr) * 1988-05-05 1989-11-08 Friedrich Deckel Aktiengesellschaft Dispositif de tournage pour les machines à forer ou à fraiser
RU2028906C1 (ru) * 1990-04-04 1995-02-20 Краснодарский политехнический институт Стол токарно-карусельного станка
DE4128276A1 (de) * 1990-08-27 1992-03-05 Mitutoyo Corp Rotationsvorrichtung
JPH04289058A (ja) * 1991-03-14 1992-10-14 Matsuura Kikai Seisakusho:Kk 工作機械用回転割出テーブル
US5196749A (en) * 1991-09-23 1993-03-23 Rem Technologies, Inc. Stator support and positioning structure for a dynamoelectric machine
JPH1129756A (ja) * 1997-07-10 1999-02-02 Wako Sangyo Kk 接着剤およびこの接着剤を用いて形成されたフィルタエレメント

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section PQ Week 7525, Derwent World Patents Index; Class P54, AN 75-G5240W *
DATABASE WPI Section PQ Week 9538, Derwent World Patents Index; Class P56, AN 95-291322 *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 381 (E - 810) 23 August 1989 (1989-08-23) *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 96 (M - 1372) 25 February 1993 (1993-02-25) *
PATENT ABSTRACTS OF JAPAN vol. 6, no. 232 (M - 172)<1110> 18 November 1992 (1992-11-18) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1046461A2 (fr) * 1999-04-21 2000-10-25 DECKEL MAHO GmbH Machine-outil universelle
EP1046461A3 (fr) * 1999-04-21 2001-01-17 DECKEL MAHO GmbH Machine-outil universelle
SG87101A1 (en) * 1999-04-21 2002-03-19 Deckel Maho Gmbh Universal machine tool
US6904652B2 (en) 1999-04-21 2005-06-14 Deckel Maho Gmbh Universal machine tool
DE19918082B4 (de) * 1999-04-21 2005-09-08 Deckel Maho Gmbh Universal-Werkzeugmaschine
US6886225B2 (en) * 2002-09-24 2005-05-03 O.M.V. Officine Meccaniche Venete S.R.L. Worktable for numerical control machine tools
JP2015024452A (ja) * 2013-07-24 2015-02-05 通雄 渡邊 工作機械用テーブル装置
CN110480032A (zh) * 2019-08-14 2019-11-22 徐州光圆国腾矿山设备制造有限公司 一种立式车床及其工作台安装装置
CN110480032B (zh) * 2019-08-14 2020-12-29 徐州光圆国腾矿山设备制造有限公司 一种立式车床及其工作台安装装置

Also Published As

Publication number Publication date
AU3652095A (en) 1996-04-19
ITMI941983A0 (it) 1994-09-29
ITMI941983A1 (it) 1996-03-29
IT1270101B (it) 1997-04-28

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