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 toolsInfo
- 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
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).
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)
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 |
-
1944
- 1944-11-17 GB GB22869/44A patent/GB618764A/en not_active Expired
Cited By (4)
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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