GB664824A - Improvements in or relating to means for eliminating back lash in transmission mechanisms - Google Patents
Improvements in or relating to means for eliminating back lash in transmission mechanismsInfo
- Publication number
- GB664824A GB664824A GB1089748A GB1089748A GB664824A GB 664824 A GB664824 A GB 664824A GB 1089748 A GB1089748 A GB 1089748A GB 1089748 A GB1089748 A GB 1089748A GB 664824 A GB664824 A GB 664824A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nut
- screw
- boss
- sleeve
- nuts
- 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
- 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
- F16H25/2003—Screw mechanisms with arrangements for taking up backlash
- F16H25/2006—Screw mechanisms with arrangements for taking up backlash with more than one nut or with nuts consisting of more than one bearing part
-
- 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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
- B23Q5/56—Preventing backlash
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
Abstract
664,824. Machine tool details. VICTORIA MACHINE TOOL CO., Ltd., FRYE, J., and SELBY, J. May 17, 1949 [April 20, 1948], No. 10897/48. Class 83 (iii). [Also in Group XXIV] A screw-and-nut transmission mechanism has means for eliminating backlash. particularly for when the load is in the direction of movement. It is shown applied to a milling-machine in which the table is connected to a non- rotatable traverse screw 1 engaged by two nuts 2, 3, rotatably mounted in a fixed part 23. The nut 2 is rotated by gearing 26, 29 and has projecting tongues 5 engaging slots in the nut 3 so that the two nuts rotate together but may have relative axial movement. The outside of the nut 3 is formed with a coarse helical thread engaging a similar thread in a sleeve 4 in frictional engagement with a rotatably-mounted boss 7 which may be held stationary. The boss 7 has a conical bore and is axially urged into frictional engagement with the conical periphery of the sleeve 4 by springs 12 acting on pins 10 which are slidable in holes 11 in the boss, the pins being secured to a rotatable annulus 9 abutting the face of a collar 8 secured to the sleeve 4. The screw 1 may be moved at two speeds-for " quick traverse " or for " feed "-by separate motors, and as the backlash-eliminating means is required only when feeding, it is automatically effective only on energization of the feed motor. A solenoid 16 is connected, through a switch, across the feed motor terminals and actuates a rod 36 raising a plunger 14 to engage slots 13 in the boss 7 and hold it against rotation. The nut 3 is thus yieldingly urged forward by the coarse helical thread (in co-operation with the slipping connection 4, 7) so that the nut 3 acts as the driving means for the screw 1 and the nut 2 as restraining means. When the solenoid 16 is de-energized the screw 1 is driven by the nut 2. Conventional backlash-eliminating means, comprising a nut 17 rotatable with nut 2, the two nuts being adjustably pressed axially apart, is also provided. Specification 596,147, [Group XXIV], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1089748A GB664824A (en) | 1948-04-20 | 1948-04-20 | Improvements in or relating to means for eliminating back lash in transmission mechanisms |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1089748A GB664824A (en) | 1948-04-20 | 1948-04-20 | Improvements in or relating to means for eliminating back lash in transmission mechanisms |
Publications (1)
Publication Number | Publication Date |
---|---|
GB664824A true GB664824A (en) | 1952-01-16 |
Family
ID=9976324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1089748A Expired GB664824A (en) | 1948-04-20 | 1948-04-20 | Improvements in or relating to means for eliminating back lash in transmission mechanisms |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB664824A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112081891A (en) * | 2019-06-14 | 2020-12-15 | 古德里奇驱动系统有限公司 | Actuator lower attachment |
-
1948
- 1948-04-20 GB GB1089748A patent/GB664824A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112081891A (en) * | 2019-06-14 | 2020-12-15 | 古德里奇驱动系统有限公司 | Actuator lower attachment |
CN112081891B (en) * | 2019-06-14 | 2024-05-14 | 古德里奇驱动系统有限公司 | Actuator lower attachment |
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