GB949676A - Improvements in or relating to screw and half-nut mechanisms particularly for machine tools - Google Patents
Improvements in or relating to screw and half-nut mechanisms particularly for machine toolsInfo
- Publication number
- GB949676A GB949676A GB1562060A GB1562060A GB949676A GB 949676 A GB949676 A GB 949676A GB 1562060 A GB1562060 A GB 1562060A GB 1562060 A GB1562060 A GB 1562060A GB 949676 A GB949676 A GB 949676A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screw
- oil
- gas
- nut
- faces
- 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
- 230000007246 mechanism Effects 0.000 title abstract 2
- 239000003921 oil Substances 0.000 abstract 5
- 239000010687 lubricating oil Substances 0.000 abstract 2
- 238000013016 damping Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
- B23Q11/125—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction for lubricating ball screw systems
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0497—Screw mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
949,676. Screw and nut gearing. GEORGE RICHARDS & CO. Ltd. May 2, 1961 [May 3, 1960], No. 15620/60. Heading F2Q. In a mechanism, particularly for automatically controlled machine tools, wherein a long half-nut secured, for example, to the machine bed is engaged by a rotatable screw 3 mounted, for example, in the machine carriage, gas or liquid lubricant is supplied under pressure to a plurality of outlets 11 in opposite side faces of the screw thread, the gas or liquid pressure being high enough to prevent metal-to-metal contact, thus reducing static friction and preventing backlash. The gas or liquid lubricant also provides viscous damping. As shown, the screw 3 has a passage 10 supplying oil to a central gallery 9 from which it passes through individual passages (only one shown) and restrictors 14 to individual arcuate grooves 11 in the thread faces. Oil drain passages 2 are provided in the nut. Since the screw is engaged by the nut over only half of its circumference most of the oil emerges ineffectively through the uncovered grooves 11. The different pressure exerted by the oil on the two faces of the screw thread are determined by the clear' ance and the axial load. In a modification the oil is replaced by gas, e.g. air, emerging through restricting orifices in the screw thread, the restrictors 14 and arcuate grooves 11 being omitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1562060A GB949676A (en) | 1960-05-03 | 1960-05-03 | Improvements in or relating to screw and half-nut mechanisms particularly for machine tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1562060A GB949676A (en) | 1960-05-03 | 1960-05-03 | Improvements in or relating to screw and half-nut mechanisms particularly for machine tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB949676A true GB949676A (en) | 1964-02-19 |
Family
ID=10062440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1562060A Expired GB949676A (en) | 1960-05-03 | 1960-05-03 | Improvements in or relating to screw and half-nut mechanisms particularly for machine tools |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB949676A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016188226A1 (en) * | 2015-05-22 | 2016-12-01 | 上海鸣志电器股份有限公司 | Ball screw assembly having a lubricant storage function |
-
1960
- 1960-05-03 GB GB1562060A patent/GB949676A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016188226A1 (en) * | 2015-05-22 | 2016-12-01 | 上海鸣志电器股份有限公司 | Ball screw assembly having a lubricant storage function |
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