CN2892331Y - Novel heavy load live center - Google Patents
Novel heavy load live center Download PDFInfo
- Publication number
- CN2892331Y CN2892331Y CN 200520031337 CN200520031337U CN2892331Y CN 2892331 Y CN2892331 Y CN 2892331Y CN 200520031337 CN200520031337 CN 200520031337 CN 200520031337 U CN200520031337 U CN 200520031337U CN 2892331 Y CN2892331 Y CN 2892331Y
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- CN
- China
- Prior art keywords
- bearing
- shell
- cover
- parts
- screw
- 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 - Fee Related
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- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses an integral-cast shell and tail spindle. An inner-sleeve-free needle roller bearing is arranged at the back of the shell, and the bearing seat is top-connected with the inner-sleeve-free needle roller bearing. One pair of disc springs are top-connected with a deep-groove ball bearing through an elastic pad. Cover the pad and fix the cover on the workpiece through screws. A set of thrust ball bearing is at the back of the front end of the shell, a shaft tip sleeve is tightly connected with the double-side cylinder bearing, and the double-side cylinder bearing is provided with an oil injecting cup in the middle for timely lubricant oil injection. The seal ring is sleeved on the tail spindle after all parts are erected, then the front cover and the seal ring are installed and fixed by screws through the screw holes to form a complete part.
Description
Technical field:
The utility model discloses a kind of novel live center, a kind of specifically novel load-carrying live center.
Background technology:
The utility model has been drawn the top technical characterstic of domestic and international heavy type, and creating double row cylindrical roller bearing, the back supporting that a kind of bearing capacity is strong, bearing is rationally distributed, no overcoat is adopted in preceding supporting is the needle bearing of cover in not having.This has just fundamentally solved application (patent) number 94205478.4 open (bulletins) number 2187091 open (bulletin) day 1995.01.11
Application (patent) number 95217777.3 open (bulletins) number 2225917 open (bulletin) day 1996.05.01
Application (patent) number 98213097.X open (bulletin) number 2316070 open (bulletin) day 1999.04.28
More than in the structure of Jie Shaoing roller for want of effectively guide and do not have drawbacks such as sharp wear that sort run produces, the German BRUCKNER company that overcome the famous whole world simultaneously falls the problem of end bearing capacity because of using solid box and short tail spindle.
Summary of the invention:
The utility model has adopted the housing and the tail spindle of solid forging, rational structure size in addition, and the excellent sealing performance and the grease structure of annotating easily, thus can use in long-term safety under the fully loaded transportation condition.Cover needle bearing in present shell rear end is installed and do not had, bearing sleeve and the interior needle bearing company of top mutually of overlapping of nothing, the rear portion is provided with 1 pair of disk spring by elastic pad and the deep groove ball bearing company of top mutually, install ready after with in the packing ring capping, then end cap is screwed in parts, the holding screw oil filler point that is provided with on the seat shell is convenient to add lubricating grease.A cover thrust ball bearing is installed at the rear portion of present shell front end, the pivot cover that has that links to each other with the place ahead is close to two routine cylindrical bearings, be provided with priming cup in the middle of two routine cylindrical bearings and be convenient to regular grease up, after each parts installs sealing ring is put tail spindle, then drive end bearing bracket and sealing ring are installed, get screw and be installed in the hole, the back that is fixed constitutes whole parts.
Technical scheme:
Cover needle bearing (9) in present shell (8) rear end is installed and do not had, bearing sleeve (11) overlaps the mutual top of needle bearing (9) even with nothing is interior, the rear portion is provided with 1 pair of disk spring (12) by elastic pad (13) and deep groove ball bearing (14) Xiang Dinglian, install ready after with in packing ring (15) capping, then end cap (17) is fixed in the parts with screw (16), holding screw (10) oil filler point that is provided with on the seat shell is convenient to add lubricating grease.A cover thrust ball bearing (7) is installed at the rear portion of present shell (8) front end, the pivot cover (6) that has that links to each other with the place ahead is close to two routine cylindrical bearings (4), be provided with priming cup (5) in the middle of two routine cylindrical bearings (4) and be convenient to regular grease up, after each parts installs sealing ring (2) is put tail spindle (1), then drive end bearing bracket (3) and sealing ring (2) are installed, get screw (18) and be installed in the hole, the back that is fixed constitutes whole parts.
The conical surface of present shell 8 is close to be fitted in the seat hole of main frame, and tool self-lock ability, tail spindle 1 front and back are installed in the present shell 8 by 4 groups of bearings, roll or workpiece frame are on top, workpiece weight, cutting force and rear portion needle bearing 9 reaction forces are born by biserial cylindrical bearing 4, axial force by top sloped roof clamping of workpieces then all is added on the thrust ball bearing 7, disk spring 12 presses to the elastic force of rear portion ball bearing 14 so that thrust bearing is in normal contact condition, sealing ring 2 in the drive end bearing bracket 3 can prevent effectively that grinding fluid and dust from entering bearing, and oil is chewed 5 regular grease ups to replenish the grease that runs off in the bearing.
Beneficial effect:
As main supporting, bearing outer ring is integrated with a seat shell with double-row roller bearing, and the guide rolls operation effectively of bearing inner race shelves limit and retainer has improved the precision of live center, greatly leap ahead service life; Because the outer raceway of bearing is an one with a seat shell, can be under equal seat shell external diameter with bearing bore diameter and roller increasing, thus having improved the bearing capacity of live center, this is top for heavy duty to be very favorable.
The needle bearing of cover had extended bearing stride again simultaneously in the back supporting was used and do not had, and had both reduced the load of needle bearing, had also reduced the load of roller bearing simultaneously, and is also very effective to the life-span that increases main supporting.
Owing to used the needle bearing that does not have interior cover, both the overstriking rear portion diameter of axle had also been thickeied the wall thickness of seat shell taper shank simultaneously, thereby had been strengthened the big end shear-stable of taper shank ability greatly, adopted solid forging seat shell in addition, and the security of live center is also more reliable.
The elastic load of deep groove ball bearing 14 is dared to be added on the thrust ball bearing 7 simultaneously, is equivalent to the preload to the bearing appropriateness, thereby makes it can both operate as normal under the axial force that varies in size.
Front and back bearings all has grease-added duct, but the regular replenishment grease prolongs the top period of service.
Description of drawings:
Be described further below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural representation;
1 tail spindle, 2 sealing rings, 3 drive end bearing brackets, 4 biserial cylindrical bearings, 5 priming cups among the figure
6 pivots overlap 8 shells of 7 thrust ball bearings 9 does not have interior cover needle bearing
10 holding screws (oil filler point), 11 bearing sleeves, 12 disk springs, 13 elastic pads
14 deep groove ball bearings, 15 packing rings, 16 screws, 17 rear end caps
18 screws (silk hole)
The specific embodiment:
Cover needle bearing (9) in present shell (8) rear end is installed and do not had, bearing sleeve (11) overlaps the mutual top of needle bearing (9) even with nothing is interior, the rear portion is provided with 1 pair of disk spring (12) by elastic pad (13) and deep groove ball bearing (14) Xiang Dinglian, install ready after with in packing ring (15) capping, then end cap (17) is fixed in the parts with screw (16), holding screw (10) oil filler point that is provided with on the seat shell is convenient to add lubricating grease.A cover thrust ball bearing (7) is installed at the rear portion of present shell (8) front end, the pivot cover (6) that has that links to each other with the place ahead is close to two routine cylindrical bearings (4), be provided with priming cup (5) in the middle of two routine cylindrical bearings (4) and be convenient to regular grease up, after each parts installs sealing ring (2) is put tail spindle (1), then drive end bearing bracket (3) and sealing ring (2) are installed, get screw (18) and be installed in the hole, the back that is fixed constitutes whole parts.
Claims (1)
1, a kind of novel load-carrying live center, the conical surface of present shell (8) is close to be fitted in the seat hole of main frame, and tool self-lock ability, it is characterized in that: cover needle bearing (9) in present shell (8) rear end is installed and do not had, bearing sleeve (11) overlaps the mutual top of needle bearing (9) even with nothing is interior, the rear portion is provided with 1 pair of disk spring (12) by elastic pad (13) and deep groove ball bearing (14) Xiang Dinglian, install ready after with in packing ring (15) capping, then end cap (17) is fixed in the parts with screw (16), holding screw (10) oil filler point that is provided with on the seat shell is convenient to add lubricating grease; A cover thrust ball bearing (7) is installed in the front portion of present shell (8) front end, the pivot cover (6) that has that links to each other with the place ahead is close to two routine cylindrical bearings (4), be provided with priming cup (5) in the middle of two routine cylindrical bearings (4) and be convenient to regular grease up, after each parts installs sealing ring (2) is put tail spindle (1), then drive end bearing bracket (3) and sealing ring (2) are installed, get screw (18) and be installed in the hole, the back that is fixed constitutes whole parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520031337 CN2892331Y (en) | 2005-07-25 | 2005-07-25 | Novel heavy load live center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520031337 CN2892331Y (en) | 2005-07-25 | 2005-07-25 | Novel heavy load live center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2892331Y true CN2892331Y (en) | 2007-04-25 |
Family
ID=38060497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520031337 Expired - Fee Related CN2892331Y (en) | 2005-07-25 | 2005-07-25 | Novel heavy load live center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2892331Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398047A (en) * | 2011-11-27 | 2012-04-04 | 河南活顶尖机械有限公司 | Precision movable center lubricated once |
| CN102398048A (en) * | 2011-11-27 | 2012-04-04 | 河南活顶尖机械有限公司 | Disposable lubrication replaceable built-in precise live center |
| CN102837109A (en) * | 2012-09-17 | 2012-12-26 | 零八一电子集团四川天源机械有限公司 | Automatic girth welding fixture |
| CN105170748A (en) * | 2015-10-14 | 2015-12-23 | 张家港保税区亚鑫精密制管有限公司 | Rolling wheel device for groove rolling machine |
| CN105643328A (en) * | 2016-04-13 | 2016-06-08 | 成都亨通兆业精密机械有限公司 | Fixing mechanism for machining |
| CN105729198A (en) * | 2016-04-13 | 2016-07-06 | 成都亨通兆业精密机械有限公司 | Lathe part fixing mechanism |
| CN105773256A (en) * | 2016-04-13 | 2016-07-20 | 成都亨通兆业精密机械有限公司 | Workpiece fixing mechanism for lathe facilitating improvement of machining efficiency |
-
2005
- 2005-07-25 CN CN 200520031337 patent/CN2892331Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398047A (en) * | 2011-11-27 | 2012-04-04 | 河南活顶尖机械有限公司 | Precision movable center lubricated once |
| CN102398048A (en) * | 2011-11-27 | 2012-04-04 | 河南活顶尖机械有限公司 | Disposable lubrication replaceable built-in precise live center |
| CN102398047B (en) * | 2011-11-27 | 2015-04-22 | 河南活顶尖机械有限公司 | Precision movable center lubricated once |
| CN102398048B (en) * | 2011-11-27 | 2015-04-22 | 河南活顶尖机械有限公司 | Disposable lubrication replaceable built-in precise live center |
| CN102837109A (en) * | 2012-09-17 | 2012-12-26 | 零八一电子集团四川天源机械有限公司 | Automatic girth welding fixture |
| CN105170748A (en) * | 2015-10-14 | 2015-12-23 | 张家港保税区亚鑫精密制管有限公司 | Rolling wheel device for groove rolling machine |
| CN105170748B (en) * | 2015-10-14 | 2017-04-12 | 张家港保税区亚鑫精密制管有限公司 | Rolling wheel device for groove rolling machine |
| CN105643328A (en) * | 2016-04-13 | 2016-06-08 | 成都亨通兆业精密机械有限公司 | Fixing mechanism for machining |
| CN105729198A (en) * | 2016-04-13 | 2016-07-06 | 成都亨通兆业精密机械有限公司 | Lathe part fixing mechanism |
| CN105773256A (en) * | 2016-04-13 | 2016-07-20 | 成都亨通兆业精密机械有限公司 | Workpiece fixing mechanism for lathe facilitating improvement of machining efficiency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070425 Termination date: 20100725 |