GB2126134A - Common turret indexing and tool holder drive mechanism - Google Patents

Common turret indexing and tool holder drive mechanism Download PDF

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Publication number
GB2126134A
GB2126134A GB08225099A GB8225099A GB2126134A GB 2126134 A GB2126134 A GB 2126134A GB 08225099 A GB08225099 A GB 08225099A GB 8225099 A GB8225099 A GB 8225099A GB 2126134 A GB2126134 A GB 2126134A
Authority
GB
United Kingdom
Prior art keywords
gear
turret
tool holders
drive
axially movable
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.)
Granted
Application number
GB08225099A
Other versions
GB2126134B (en
Inventor
Collin Wyatt
Roger Paul Bastow
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.)
600 Group PLC
Original Assignee
600 Group PLC
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 600 Group PLC filed Critical 600 Group PLC
Priority to GB08225099A priority Critical patent/GB2126134B/en
Priority to JP58152610A priority patent/JPS5959304A/en
Publication of GB2126134A publication Critical patent/GB2126134A/en
Application granted granted Critical
Publication of GB2126134B publication Critical patent/GB2126134B/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/24—Tool holders for a plurality of cutting tools, e.g. turrets
    • B23B29/32—Turrets adjustable by power drive, i.e. turret heads
    • B23B29/323—Turrets with power operated angular positioning devices
    • 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
    • B23Q1/54—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 two rotating pairs only
    • 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
    • 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
    • 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
    • B23Q2220/00—Machine tool components
    • B23Q2220/002—Tool turrets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Drilling And Boring (AREA)
  • Machine Tool Positioning Apparatuses (AREA)

Abstract

For use in a turning centre, a turret has a plurality of radial and/or axial driven tool holders 18, 19 on indexable turret part 2 and an indexing mechanism, selective drive of the tool holders 18, 19 and actuation of the indexing part 2 are achieved from a common drive 6, 7, 8, 9 through an axially movable gear 10, 11, 12 which is movable between a first axial position in which it engages gear 25 to index part 2 and a second axial position in which it engages gears 22, 25 to drive tool holders 18, 19. <IMAGE>

Description

SPECIFICATION Improvements in turrets for turning centres Introduction This invention relates to improvements in turrets for turning centres in which the turret has a plurality of driven tool holders and an indexing mechanism.
Background art It is the usual practice in rotating tool turrets in turning centres for the drive mechanism for the tool holders to be entirely separate from the drive mechanism which effects indexing. This approach complicates the construction of the turrent with the increased likelihood of malfunction.
Object of the invention It is the main object of this invention to provide, in the turret of a turning centre, a simplified drive mechanism for driving the tool holders and indexing.
Statements of invention According to the present invention there is provided, for a turning centre, a turret having a plurality of driven tool holders and an indexing mechanism, in which selective drive of the tool holders and actuation of the indexing mechanism are achieved from a common drive through an axially movable gear engageable selectively with a gear driving one of the tool holders or a gear driving the indexing mechanism.
Movement of the axially movable gear may be achieved hydraulically.
The invention also includes the axially movable gear as aforesaid having a shank rotatably mounted in the piston of a piston and cylinder assembly which effects axial movement of the gear.
Further, the invention includes a turret as aforesaid in which the indexable part of the turret is positioned relative to the fixed part of the turret by a faced tooth coupling arranged so that, when selectively engaged, the axially movable gear is in register for engagement with the gear driving one of the tool holders.
Drawing One embodiment of turret in accordance with the invention will now be described, by way of example only, and with reference to the accompanying drawing in which the figure is a longitudinal sectional view through the turret.
Specific description The turret illustrated in the drawing has a fixed part 1 and an indexable part 2 positioned relative to each other by the engagement of a faced tooth coupling 3. This coupling 3 is held in engagement by hydraulic pressure within chamber 4 which, when relieved and hydraulic pressure applied to chamber 5, enables the indexable part 2 of the turret to move to the right as seen in the drawing thereby disengaging the coupling 3 and enabling indexing to take place as hereinafter described.
A turret drive motor (not shown) drives shaft 6 which, through gears 7 and 8, drives gear 9. In sliding engagement with gear 9 is gear 10 carried by shank 11 of axially movable gear 12. The shank 11 is rotatably mounted through needle bearings 13 in the piston 14 of a piston and cylinder assembly including cylinder 15. Hydraulic power applied selectively to chambers 16 and 17 causes axial movement of piston 14 and hence axially movable gear 11, 12 within cylinder 15.
The indexable part 2 of the turret is provided with a plurality of radial tool holders 18 and axial tool holders 19. Each radial tool holder 18 is driven through bevel gears 20 and 21 from internal gear 22.
Each of the axial tool holders 19 is driven through gears 23 and 24 from internal gear 25.
The gear 12 is selectively engageable with any one of the internal gears 22 or 25 to effect drive of a selected tool holder 18 or 19. Such drive is effected by hydraulic pressure being applied to chamber 16 thus causing the gear 11, 12 to move to the right as seen in the drawing and drive to the selected tool holder is thereby achieved from drive shaft 6.
When it is desired to index the turret, with the drive shaft 6 stationary hydraulic pressure is applied to chamber 17 thereby moving the axially movable gear 11, 12 to the left as seen in the Figure whereby gear 12 engages with gear 26.
With faced tooth coupling 3 disengaged, the indexable part 2 of the turret may be rotated under control using encoder feedback, the operation of which is well known. With faced tooth coupling 3 re-engaged, the gear 12 will be in register with one of the internal gears 22 or 25 to enable drive of the selected tool holder to be effected.
Thus, the drive mechanism in accordance with the invention simplifies the construction and operation of the turret and hence provides a cost effective construction.
Claims (Filed on 1.7.83) 1. For a turning centre, a turret having a plurality of driven tool holders and an indexing mechanism, in which selective drive of the tool holders and actuation of the indexing mechanism are achieved from a common drive through an axially movable gear engageable selectively with a gear driving one of the tool holders or a gear driving the indexing mechanism.
2. A turret as claimed in Claim 1, in which movement of the axially movable gear is achieved hydraulically.
3. A turret as claimed in Claim 2, in which the axially movable gear has a shank rotatably mounted in the piston of a piston and cylinder assembly which effects axial movement of the gear.
4. A turret as claimed in any one of the preceding claims having an indexable part and a
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improvements in turrets for turning centres Introduction This invention relates to improvements in turrets for turning centres in which the turret has a plurality of driven tool holders and an indexing mechanism. Background art It is the usual practice in rotating tool turrets in turning centres for the drive mechanism for the tool holders to be entirely separate from the drive mechanism which effects indexing. This approach complicates the construction of the turrent with the increased likelihood of malfunction. Object of the invention It is the main object of this invention to provide, in the turret of a turning centre, a simplified drive mechanism for driving the tool holders and indexing. Statements of invention According to the present invention there is provided, for a turning centre, a turret having a plurality of driven tool holders and an indexing mechanism, in which selective drive of the tool holders and actuation of the indexing mechanism are achieved from a common drive through an axially movable gear engageable selectively with a gear driving one of the tool holders or a gear driving the indexing mechanism. Movement of the axially movable gear may be achieved hydraulically. The invention also includes the axially movable gear as aforesaid having a shank rotatably mounted in the piston of a piston and cylinder assembly which effects axial movement of the gear. Further, the invention includes a turret as aforesaid in which the indexable part of the turret is positioned relative to the fixed part of the turret by a faced tooth coupling arranged so that, when selectively engaged, the axially movable gear is in register for engagement with the gear driving one of the tool holders. Drawing One embodiment of turret in accordance with the invention will now be described, by way of example only, and with reference to the accompanying drawing in which the figure is a longitudinal sectional view through the turret. Specific description The turret illustrated in the drawing has a fixed part 1 and an indexable part 2 positioned relative to each other by the engagement of a faced tooth coupling 3. This coupling 3 is held in engagement by hydraulic pressure within chamber 4 which, when relieved and hydraulic pressure applied to chamber 5, enables the indexable part 2 of the turret to move to the right as seen in the drawing thereby disengaging the coupling 3 and enabling indexing to take place as hereinafter described. A turret drive motor (not shown) drives shaft 6 which, through gears 7 and 8, drives gear 9. In sliding engagement with gear 9 is gear 10 carried by shank 11 of axially movable gear 12. The shank 11 is rotatably mounted through needle bearings 13 in the piston 14 of a piston and cylinder assembly including cylinder 15. Hydraulic power applied selectively to chambers 16 and 17 causes axial movement of piston 14 and hence axially movable gear 11, 12 within cylinder 15. The indexable part 2 of the turret is provided with a plurality of radial tool holders 18 and axial tool holders 19. Each radial tool holder 18 is driven through bevel gears 20 and 21 from internal gear 22. Each of the axial tool holders 19 is driven through gears 23 and 24 from internal gear 25. The gear 12 is selectively engageable with any one of the internal gears 22 or 25 to effect drive of a selected tool holder 18 or 19. Such drive is effected by hydraulic pressure being applied to chamber 16 thus causing the gear 11, 12 to move to the right as seen in the drawing and drive to the selected tool holder is thereby achieved from drive shaft 6. When it is desired to index the turret, with the drive shaft 6 stationary hydraulic pressure is applied to chamber 17 thereby moving the axially movable gear 11, 12 to the left as seen in the Figure whereby gear 12 engages with gear 26. With faced tooth coupling 3 disengaged, the indexable part 2 of the turret may be rotated under control using encoder feedback, the operation of which is well known. With faced tooth coupling 3 re-engaged, the gear 12 will be in register with one of the internal gears 22 or 25 to enable drive of the selected tool holder to be effected. Thus, the drive mechanism in accordance with the invention simplifies the construction and operation of the turret and hence provides a cost effective construction. Claims (Filed on 1.7.83)
1. For a turning centre, a turret having a plurality of driven tool holders and an indexing mechanism, in which selective drive of the tool holders and actuation of the indexing mechanism are achieved from a common drive through an axially movable gear engageable selectively with a gear driving one of the tool holders or a gear driving the indexing mechanism.
2. A turret as claimed in Claim 1, in which movement of the axially movable gear is achieved hydraulically.
3. A turret as claimed in Claim 2, in which the axially movable gear has a shank rotatably mounted in the piston of a piston and cylinder assembly which effects axial movement of the gear.
4. A turret as claimed in any one of the preceding claims having an indexable part and a fixed part, in which the indexable part is positioned relative to the fixed part by a faced tooth coupling arranged so that, when selectively engaged, the axially movable gear is in register for engagement with the gear driving one of the tool holders.
5. For a turning centre, a turret substantially as herein described with reference to the accompanying drawings.
6. A turning centre having a turret as claimed in any one of the preceding claims.
GB08225099A 1982-09-03 1982-09-03 Common turret indexing and tool holder drive mechanism Expired GB2126134B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB08225099A GB2126134B (en) 1982-09-03 1982-09-03 Common turret indexing and tool holder drive mechanism
JP58152610A JPS5959304A (en) 1982-09-03 1983-08-23 Turret for rotary center

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08225099A GB2126134B (en) 1982-09-03 1982-09-03 Common turret indexing and tool holder drive mechanism

Publications (2)

Publication Number Publication Date
GB2126134A true GB2126134A (en) 1984-03-21
GB2126134B GB2126134B (en) 1986-01-08

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ID=10532661

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08225099A Expired GB2126134B (en) 1982-09-03 1982-09-03 Common turret indexing and tool holder drive mechanism

Country Status (2)

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JP (1) JPS5959304A (en)
GB (1) GB2126134B (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001139A1 (en) * 1984-08-17 1986-02-27 Oerlikon-Boehringer Gmbh Tool holder for driven tools
EP0214090A1 (en) * 1985-08-12 1987-03-11 Schäublin S.A. Drive mechanism for tool holders in a machine tool
EP0220359A2 (en) * 1985-10-29 1987-05-06 Hardinge Brothers Inc. Live tooling turret
DE3730561C1 (en) * 1987-09-11 1988-11-17 Index Werke Kg Hahn & Tessky Tool turret
EP0296842A2 (en) * 1987-06-26 1988-12-28 Beaver Machine Tool Sales Ltd. Plano-milling machine
EP0302998A2 (en) * 1987-08-08 1989-02-15 Sauter Feinmechanik GmbH Turret for machine-tool
DE3929803C1 (en) * 1989-09-07 1991-01-24 Traub Ag, 7313 Reichenbach, De
EP0415271A2 (en) * 1989-09-01 1991-03-06 Emag Maschinenfabrik Gmbh Tool turret for machine-tool
EP0455286A2 (en) * 1990-04-30 1991-11-06 Baruffaldi S.P.A. Coupling device for the transmission of the movement to toolholder units of automatic turrets
EP0449460B1 (en) * 1990-03-22 1995-03-01 Teijin Seiki Company Limited Tool-rest driving device
EP0764499A1 (en) * 1995-09-25 1997-03-26 Dyadic Systems Co., Ltd. Turret head device for machine tool
WO2000013846A2 (en) * 1998-09-04 2000-03-16 Terrence Sheehan Indexing tool turret
US6704983B2 (en) * 2001-08-30 2004-03-16 Mori Seiki Co., Ltd. Turret type tool post
US20140033490A1 (en) * 2012-07-31 2014-02-06 O-M Ltd. Composite processing machine
US20160250692A1 (en) * 2013-10-21 2016-09-01 Fuji Machine Mfg. Co., Ltd. Machining head

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63312006A (en) * 1987-06-10 1988-12-20 Honda Motor Co Ltd Tool holding device for turret type machine tool
US6634264B1 (en) * 1998-08-21 2003-10-21 Citizen Watch Co., Ltd. Capstan rest
US10213887B2 (en) 2014-03-31 2019-02-26 Citizen Watch Co., Ltd. Turret tool post and machine tool equipped with turret tool post

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001139A1 (en) * 1984-08-17 1986-02-27 Oerlikon-Boehringer Gmbh Tool holder for driven tools
DE3430380A1 (en) * 1984-08-17 1986-02-27 Oerlikon-Boehringer GmbH, 7320 Göppingen TOOL HEAD FOR DRIVEN TOOLS
EP0214090A1 (en) * 1985-08-12 1987-03-11 Schäublin S.A. Drive mechanism for tool holders in a machine tool
EP0220359A2 (en) * 1985-10-29 1987-05-06 Hardinge Brothers Inc. Live tooling turret
EP0220359A3 (en) * 1985-10-29 1988-08-31 Hardinge Brothers Inc. Live tooling turret
EP0296842A2 (en) * 1987-06-26 1988-12-28 Beaver Machine Tool Sales Ltd. Plano-milling machine
GB2206510A (en) * 1987-06-26 1989-01-11 Beaver Machine Tool Sales Limi Plano-milling machine indexing tool head
EP0296842A3 (en) * 1987-06-26 1989-12-27 Beaver Machine Tool Sales Ltd. Plano-milling machine
EP0302998A2 (en) * 1987-08-08 1989-02-15 Sauter Feinmechanik GmbH Turret for machine-tool
EP0302998A3 (en) * 1987-08-08 1989-12-20 Sauter Feinmechanik Gmbh Turret for machine-tool
DE3730561C1 (en) * 1987-09-11 1988-11-17 Index Werke Kg Hahn & Tessky Tool turret
US4872244A (en) * 1987-09-11 1989-10-10 Index-Werke Comm.-Ges. Hahn & Tessky Turret with several drivable tool spindles for a machine tool
EP0415271A3 (en) * 1989-09-01 1991-05-02 Emag Maschinenfabrik Gmbh Tool turret for machine-tool
EP0415271A2 (en) * 1989-09-01 1991-03-06 Emag Maschinenfabrik Gmbh Tool turret for machine-tool
EP0416612A2 (en) * 1989-09-07 1991-03-13 Traub AG Turret for automatic lathe with tool holder for driven rotating tools
DE3929803C1 (en) * 1989-09-07 1991-01-24 Traub Ag, 7313 Reichenbach, De
EP0416612A3 (en) * 1989-09-07 1991-05-22 Traub Ag Turret for automatic lathe with tool holder for driven rotating tools
EP0449460B1 (en) * 1990-03-22 1995-03-01 Teijin Seiki Company Limited Tool-rest driving device
EP0455286A2 (en) * 1990-04-30 1991-11-06 Baruffaldi S.P.A. Coupling device for the transmission of the movement to toolholder units of automatic turrets
EP0455286A3 (en) * 1990-04-30 1992-06-10 Baruffaldi S.P.A. Coupling device for the transmission of the movement to toolholder units of automatic turrets
US5745967A (en) * 1995-09-25 1998-05-05 Dyadic Systems Co., Ltd. Turret head device for machine tool
EP0764499A1 (en) * 1995-09-25 1997-03-26 Dyadic Systems Co., Ltd. Turret head device for machine tool
WO2000013846A2 (en) * 1998-09-04 2000-03-16 Terrence Sheehan Indexing tool turret
WO2000013846A3 (en) * 1998-09-04 2000-08-31 Terrence Sheehan Indexing tool turret
US6785943B2 (en) 1998-09-04 2004-09-07 Hardinge, Inc. Indexing tool turret
US6704983B2 (en) * 2001-08-30 2004-03-16 Mori Seiki Co., Ltd. Turret type tool post
US20140033490A1 (en) * 2012-07-31 2014-02-06 O-M Ltd. Composite processing machine
US9314890B2 (en) * 2012-07-31 2016-04-19 O-M Ltd. Composite processing machine
US20160250692A1 (en) * 2013-10-21 2016-09-01 Fuji Machine Mfg. Co., Ltd. Machining head
US9815121B2 (en) * 2013-10-21 2017-11-14 Fuji Machine Mfg. Co., Ltd. Machining head

Also Published As

Publication number Publication date
JPS5959304A (en) 1984-04-05
JPH0329524B2 (en) 1991-04-24
GB2126134B (en) 1986-01-08

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960903