GB1309786A - Spindle boring apparatus - Google Patents

Spindle boring apparatus

Info

Publication number
GB1309786A
GB1309786A GB1964970A GB1964970A GB1309786A GB 1309786 A GB1309786 A GB 1309786A GB 1964970 A GB1964970 A GB 1964970A GB 1964970 A GB1964970 A GB 1964970A GB 1309786 A GB1309786 A GB 1309786A
Authority
GB
United Kingdom
Prior art keywords
spindle
tool
boring
cutting tool
oil pockets
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.)
Expired
Application number
GB1964970A
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.)
LUDWIGSBURGER MASCHINENBAU GmbH
LUDWIGSBURGER MASCH BAU
Original Assignee
LUDWIGSBURGER MASCHINENBAU GmbH
LUDWIGSBURGER MASCH BAU
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 LUDWIGSBURGER MASCHINENBAU GmbH, LUDWIGSBURGER MASCH BAU filed Critical LUDWIGSBURGER MASCHINENBAU GmbH
Publication of GB1309786A publication Critical patent/GB1309786A/en
Expired legal-status Critical Current

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
    • B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • B23Q1/38—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports
    • B23Q1/385—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports in which the thickness of the fluid-layer is adjustable
    • 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
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • 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
    • B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

1309786 Fluid bearings LUDWIGSBURGER MASCHINENBAU GmbH 23 April 1970 [23 April 1969] 19649/70 Heading F2A [Also in Division B3] A cutting tool 26 mounted in a boring spindle has means to ensure disengagement from the surface being bored by supplying hydraulic fluid to a bearing 28 for the boring spindle so as to effect radial displacement of the spindle. The spindle 14 is supported in two hydrostatic bearing members 28, 28<SP>1</SP> which are fixed in the housing 10 and in which are formed four oil pockets, e.g. 52 spaced equidistantly around the bearing surface of the bearing members 28, 28<SP>1</SP>. Each oil pocket is connected via a throttle valve, e.g. 64 to an hydraulic system 58 so that equal pressure conditions occur in all the oil pockets thus holding the boring spindle in a central position. When the boring operation is completed the angular position of tool 26 is adjusted by a checking device (not shown) so that the tool 26 extends upwards (as in Fig. 1) and the oil pocket 52 which is substantially opposite the tool is opened to low pressure via a two way magnetic valve 70 so that the boring spindle is tilted downwards and the cutting tool released from the surface of the workpiece. In a modification, Fig. 3 (not shown), the spindle is provided with a feed channel (82) which opens out at the surface of the spindle on the same side as the cutting tool 26 and into one of the oil pockets, which one depending upon the angular position of the spindle, and the feed channel (82) is also permanently connected to the hydraulic pressure system 58 by means of an annular groove (90) arranged in an annular projection in the housing 10. Pressure applied via a 2 way magnetic valve (94) and the feed channel (82) will provide extra pressure in one of the oil pockets to remove the cutting tool from the work surface in any angular position.
GB1964970A 1969-04-23 1970-04-23 Spindle boring apparatus Expired GB1309786A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691920487 DE1920487A1 (en) 1969-04-23 1969-04-23 Device for lifting the cutting edge of a tool arranged in a drilling spindle from the surface of the drilled hole produced

Publications (1)

Publication Number Publication Date
GB1309786A true GB1309786A (en) 1973-03-14

Family

ID=5731974

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1964970A Expired GB1309786A (en) 1969-04-23 1970-04-23 Spindle boring apparatus

Country Status (4)

Country Link
DE (1) DE1920487A1 (en)
FR (1) FR2046432A5 (en)
GB (1) GB1309786A (en)
SE (1) SE363254B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103691989A (en) * 2013-12-03 2014-04-02 无锡桥联数控机床有限公司 Square ram middle section bearing seat processing tool structure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584635B1 (en) * 1985-07-12 1989-05-19 Forest Line Sa HORIZONTAL BORING MACHINE
US20130202373A1 (en) * 2009-12-28 2013-08-08 Mitsubishi Heavy Industries, Ltd. Deflection correction device for ram

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103691989A (en) * 2013-12-03 2014-04-02 无锡桥联数控机床有限公司 Square ram middle section bearing seat processing tool structure

Also Published As

Publication number Publication date
FR2046432A5 (en) 1971-03-05
SE363254B (en) 1974-01-14
DE1920487A1 (en) 1970-11-05

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees