GB618764A - Improvements in or relating to systems for lubricating and supporting horizontal tables of machine tools - Google Patents

Improvements in or relating to systems for lubricating and supporting horizontal tables of machine tools

Info

Publication number
GB618764A
GB618764A GB22869/44A GB2286944A GB618764A GB 618764 A GB618764 A GB 618764A GB 22869/44 A GB22869/44 A GB 22869/44A GB 2286944 A GB2286944 A GB 2286944A GB 618764 A GB618764 A GB 618764A
Authority
GB
United Kingdom
Prior art keywords
clearances
pressure
bearing
spaces
oil
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
GB22869/44A
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.)
Milacron Inc
Original Assignee
Cincinnati Milling Machine Co
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 Cincinnati Milling Machine Co filed Critical Cincinnati Milling Machine Co
Publication of GB618764A publication Critical patent/GB618764A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/02—Sliding-contact bearings
    • F16C29/025—Hydrostatic or aerostatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Machine Tool Units (AREA)

Abstract

618,764. Fluid bearings. CINCINNATI MILLING MACHINE CO. Nov. 17, 1944, No. 22869. Convention date, March 10. [Class 12 (i)] A horizontally moving table as of a machine tool has bearing portions which are located between vertically spaced parallel fixed bearing surfaces and are supported by lubricating liquid introduced under pressure between the bearing portions of the table and the fixed bearing surfaces, the total thrust being varied as the clearances between the bearing surfaces alter. As shown in the transverse sectional view, Fig. 3, the table 11 of a precision grinding machine is supported on a bed 10 by table bearing-portions 20, 19 which slide on the ways 18, 17 and are located below overhanging gib portions 22, 21. Oil supplied under pressure by a pump 100 passes by ducts 26, 25 to the bearing surfaces and passes thence by the small clearances formed below appropriate lands to intermediate pressure spaces and to drainage. Fig. 2 is an enlarged view showing the arrangement for the table bearing portion 20. Oil at pump pressure is supplied to the bottom recess 2 (by duct 26, Fig. 3) and passes at the same pressure to side recesses 7 by internal ducts 32, 33, Fig. 2. The faces of the table bearing portion 20 are provided with the intermediate-pressure spaces 4, 9, b, d, Fig. 2, which intercommunicate by internal ducts, Figs. 8, 9; the oil passes by the throttling clearances 3, 8 to the intermediate pressure spaces 4, 9 so setting up an intermediate pressure in the spaces 4, 9, b, d with the oil draining from these spaces 4, 9, b, d through the throttling clearances 5, 10, a, c to the drains 28, 27, 29, 28. The resistances of the throttling clearances are designed by appropriate dimensioning of the widths and lengths of the lands so that the resultant total thrust balances the weight of the table. If the table is displaced downwardly, upwardly, or sidewise, the clearances alter and cause a compensating thrust to arise. The pressure oil may equally well be introduced at the upper face of the table bearing-portion, Fig. 11 (not shown).
GB22869/44A 1944-03-10 1944-11-17 Improvements in or relating to systems for lubricating and supporting horizontal tables of machine tools Expired GB618764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US618764XA 1944-03-10 1944-03-10

Publications (1)

Publication Number Publication Date
GB618764A true GB618764A (en) 1949-02-28

Family

ID=22038705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22869/44A Expired GB618764A (en) 1944-03-10 1944-11-17 Improvements in or relating to systems for lubricating and supporting horizontal tables of machine tools

Country Status (1)

Country Link
GB (1) GB618764A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1077943B (en) * 1953-07-16 1960-03-17 Escher Wyss Gmbh Hydrostatic sliding bearing of the work table of a machine tool, especially the face plate of a vertical lathe
DE1149591B (en) * 1956-12-07 1963-05-30 Fairey Aviat Co Ltd Pressurized fluid storage
DE1294797B (en) * 1960-05-19 1969-05-08 New Britain Machine Co Work table for machine tool
DE1807907A1 (en) * 1967-11-09 1969-06-26 Cincinnati Milling Machine Co Machine tool with slide that can be moved upwards

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1077943B (en) * 1953-07-16 1960-03-17 Escher Wyss Gmbh Hydrostatic sliding bearing of the work table of a machine tool, especially the face plate of a vertical lathe
DE1149591B (en) * 1956-12-07 1963-05-30 Fairey Aviat Co Ltd Pressurized fluid storage
DE1294797B (en) * 1960-05-19 1969-05-08 New Britain Machine Co Work table for machine tool
DE1807907A1 (en) * 1967-11-09 1969-06-26 Cincinnati Milling Machine Co Machine tool with slide that can be moved upwards

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