JPS57163031A - Main spindle device of machine tool - Google Patents

Main spindle device of machine tool

Info

Publication number
JPS57163031A
JPS57163031A JP4312881A JP4312881A JPS57163031A JP S57163031 A JPS57163031 A JP S57163031A JP 4312881 A JP4312881 A JP 4312881A JP 4312881 A JP4312881 A JP 4312881A JP S57163031 A JPS57163031 A JP S57163031A
Authority
JP
Japan
Prior art keywords
bearing
main spindle
speed range
hydrostatic
stator
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
JP4312881A
Other languages
Japanese (ja)
Other versions
JPS617881B2 (en
Inventor
Sadami Akiyama
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP4312881A priority Critical patent/JPS57163031A/en
Publication of JPS57163031A publication Critical patent/JPS57163031A/en
Publication of JPS617881B2 publication Critical patent/JPS617881B2/ja
Granted 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

Landscapes

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

Abstract

PURPOSE:To high accurately perform cutting work in a full range, by increasing rigidity of a main spindle at a low speed range while reducing heat generation at a high speed range, that is, by applying a pressure oil hydrostatic bearing and pressure air hydrostatic bearing to the bearing of the main spindle in a machine tool and selectively using the both hydrostatic bearings. CONSTITUTION:A main spindle 16, fixed with a rotor 138, is axially supported to a main spindle head 10, provided with a stator 132, by radial bearings 18, 20 and thrust bearing 40. The stator 132 and the rotor 138 constitute an electric motor, and excitation power of the stator 132 is controlled to control rotary speed of the main spindle 16. Each bearing is a hydrostatic bearing, provided with drain holes 26 at both sides of a jet 22, jetting pressure oil, and with a pressure air jet 30 in the outside of the drain hole, and rotary speed of the main spindle is measured by a unit 142 to feed pressure oil at a low speed range and use the bearing as an oil hydrostatic bearing, while at transfer to a high speed range, a drain open-close valve 102 is closed with a time delay from a pressure oil open-close valve 82, and residual oil in the pressure jet 22 or the like is removed to use the bearing as an air hydrostatic bearing at a high speed range.
JP4312881A 1981-03-26 1981-03-26 Main spindle device of machine tool Granted JPS57163031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4312881A JPS57163031A (en) 1981-03-26 1981-03-26 Main spindle device of machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4312881A JPS57163031A (en) 1981-03-26 1981-03-26 Main spindle device of machine tool

Publications (2)

Publication Number Publication Date
JPS57163031A true JPS57163031A (en) 1982-10-07
JPS617881B2 JPS617881B2 (en) 1986-03-10

Family

ID=12655198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4312881A Granted JPS57163031A (en) 1981-03-26 1981-03-26 Main spindle device of machine tool

Country Status (1)

Country Link
JP (1) JPS57163031A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02271105A (en) * 1989-04-13 1990-11-06 Isuzu Motors Ltd Bearing device for high speed rotation axis
KR100799259B1 (en) 2006-08-17 2008-01-30 두산인프라코어 주식회사 Sealing device of high speed hydraulic static pressure spindle
US7547168B1 (en) * 2008-04-17 2009-06-16 Kosmowski Wojciech B High speed spindle system and centrifugal chuck
JP2009195993A (en) * 2008-02-19 2009-09-03 Okamoto Machine Tool Works Ltd Surface grinding head system for substrate
CN105952797A (en) * 2016-03-22 2016-09-21 宁波圣圭精工科技有限公司 Static-pressure spindle
CN111927886A (en) * 2020-07-15 2020-11-13 杭州电子科技大学 AACMM high-precision joint based on static pressure air bearing and supporting method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02271105A (en) * 1989-04-13 1990-11-06 Isuzu Motors Ltd Bearing device for high speed rotation axis
KR100799259B1 (en) 2006-08-17 2008-01-30 두산인프라코어 주식회사 Sealing device of high speed hydraulic static pressure spindle
JP2009195993A (en) * 2008-02-19 2009-09-03 Okamoto Machine Tool Works Ltd Surface grinding head system for substrate
US7547168B1 (en) * 2008-04-17 2009-06-16 Kosmowski Wojciech B High speed spindle system and centrifugal chuck
CN105952797A (en) * 2016-03-22 2016-09-21 宁波圣圭精工科技有限公司 Static-pressure spindle
CN111927886A (en) * 2020-07-15 2020-11-13 杭州电子科技大学 AACMM high-precision joint based on static pressure air bearing and supporting method thereof

Also Published As

Publication number Publication date
JPS617881B2 (en) 1986-03-10

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