GB701670A - Improvements in or relating to spindle and pulley assemblies for machine tools and the like - Google Patents
Improvements in or relating to spindle and pulley assemblies for machine tools and the likeInfo
- Publication number
- GB701670A GB701670A GB74152A GB74152A GB701670A GB 701670 A GB701670 A GB 701670A GB 74152 A GB74152 A GB 74152A GB 74152 A GB74152 A GB 74152A GB 701670 A GB701670 A GB 701670A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spindle
- bearing
- pulley
- bearings
- housing
- 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
-
- 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
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
701,670. Belt and chain gearing; removing shafts. BOURDON TOOLS, Ltd. May 16, 1952 [Jan. 9, 1952], No. 741/52. Classes 80 (1) and 80 (2) In a grinding or like machine wherein a toolcarrying spindle 9 is driven by a belt (or chain) 54 engaging a pulley (or sprocket) 41 on the spindle, the pulley 41 rotates on fixed bearings 46, 47 in a housing 1 while the spindle 9, which has bearings 7, 8, 21 in the housing, is slidably keyed in the pulley so that, after removing screws 3, the spindle and lower bearing unit may be lowered to allow removal or replacement of the belt 54. The arrangement also ensures that the load of the belt tension is not transmitted to the spindle and that the main bearings, 7, 8 of the latter are readily accessible. The housing 1 is vertically slidable on a column (not shown) containing the driving pulley and motor, and has a detachable closure plate 2 carrying the lower bearing housing 4. A flanged collar 10 on the spindle 9 prevents oil leakage, and the grinding wheel may be flxed to the collar or to an extension of the spindle. Preferably the grinding wheel head and the plate 2 are formed as in Specification 696,198, [Group XXII], to provide liquid coolant or lubricant to the grinding wheel. The bearings 7, 8 are clamped between upper and lower cover plates (the upper plate not being shown) and spacing sleeves, and are adjusted by a nut 17 locked by a grub screw and circlip. The rollers of the upper bearing 21 are held in a cage and remain in the fixed outer race when the spindle 9 is lowered. The pulley 41 has a boss 52 engaging the inner races of the two bearings 46, 47, the outer races being fixed to a housing partition 42. When the spindle has been lowered and a cap 39 removed a belt may be threaded downwardly through the bearing 21, or, if the spindle is withdrawn entirely, upwardly through the pulley boss 52. Alternatively an opening 57 in the housing 1 may be provided. Lubricating nipples 63, 66, 72 and corresponding passages are provided for the bearings. In a modification the rollers and inner races of the bearing 21 are lowered with the spindle leaving the outer race fixed, and a collar on the spindle, similar to the collar 10, closes the underside of the bearing. In a further modification the bearing 21 is a ball bearing and the whole bearing is lowered with the spindle 9, the outer race being slidable in its mounting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB74152A GB701670A (en) | 1952-01-09 | 1952-01-09 | Improvements in or relating to spindle and pulley assemblies for machine tools and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB74152A GB701670A (en) | 1952-01-09 | 1952-01-09 | Improvements in or relating to spindle and pulley assemblies for machine tools and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB701670A true GB701670A (en) | 1953-12-30 |
Family
ID=9709705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB74152A Expired GB701670A (en) | 1952-01-09 | 1952-01-09 | Improvements in or relating to spindle and pulley assemblies for machine tools and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB701670A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2156943A (en) * | 1984-03-31 | 1985-10-16 | Fletcher Sutcliffe Wild Ltd | Sprocket/barrel assembly for a scraper chain conveyor |
-
1952
- 1952-01-09 GB GB74152A patent/GB701670A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2156943A (en) * | 1984-03-31 | 1985-10-16 | Fletcher Sutcliffe Wild Ltd | Sprocket/barrel assembly for a scraper chain conveyor |
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