CN104148678A - Main shaft structure for vehicle head - Google Patents
Main shaft structure for vehicle head Download PDFInfo
- Publication number
- CN104148678A CN104148678A CN201410388274.2A CN201410388274A CN104148678A CN 104148678 A CN104148678 A CN 104148678A CN 201410388274 A CN201410388274 A CN 201410388274A CN 104148678 A CN104148678 A CN 104148678A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- face
- rear end
- bearing
- sleeve
- 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.)
- Pending
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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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention provides a main shaft structure for a vehicle head. The main shaft structure improves accuracy and rigidity of a main shaft, once the axial position of a bearing loosens, the axial position of the bearing can be fastened conveniently, and accuracy and rigidity of the main shaft of the vehicle head are further guaranteed. The main shaft structure comprises a sleeve and the main shaft. The main shaft penetrates through a center hole of the sleeve, the two ends of the main shaft are supported to the two ends of the center hole through the bearing, and the rear end of the main shaft is exposed out of the sleeve and is sleeved with a belt wheel. The main shaft structure is characterized in that the two ends of the main shaft are sleeved with a front bearing set and a rear bearing set respectively, the front bearing set particularly refers to four back-to-back angular contact bearings, the rear bearing set particularly refers to two back-to-back angular contact bearings, an outer thread is formed in the rear positioning ring face, located on the front bearing set, of the main shaft, the front thread positioning sleeve is connected with the outer thread in a threaded mode, and the front end face of the front thread positioning sleeve is tightly attached to the rear end face of the front bearing set.
Description
Technical field
The present invention relates to the technical field of structures of main shaft, be specially a kind of main shaft of head structure.
Background technology
Existing main shaft of head structure, main shaft runs through the centre bore of sleeve and the bearing by two ends supports, and its bearing is single bearing, and the compressing structure of bearing is tensioning ring, owing to only making bearing little for the pretightning force of main shaft by single bearing supporting, make precision, the poor rigidity of main shaft of head, in addition, the installation of tensioning ring needs one-time-reach-place, follow-up difficult adjustment, once bearing axial location occurs loosening, owing to adjusting, the precision of main shaft of head, poor rigidity.
Summary of the invention
For the problems referred to above, the invention provides a kind of main shaft of head structure, it has promoted precision, the rigidity of main shaft, once and the axial location of bearing occur looseningly, facilitate the axial location of fastening bearing, further guarantee precision, the rigidity of main shaft of head.
A kind of main shaft of head structure, its technical scheme is such: it comprises sleeve, main shaft, described main shaft runs through the centre bore of described sleeve, the two ends of described main shaft are supported on respectively the two ends of described centre bore by bearing, the rear end of described main shaft exposes to described sleeve, and be set with belt pulley, it is characterized in that: the two ends of described main shaft are respectively installed with fore bearing group, rear bearing group, described fore bearing group is specially tetrad back to back angle contact bearing, described rear bearing group is specially two back to back angle contact bearings, location, the rear portion anchor ring that is positioned at described fore bearing group of described main shaft has external screw thread, the preceding thread positioning sleeve described external screw thread that is threaded, the front end face of described preceding thread positioning sleeve is close to the rear end face of described fore bearing group, location, the rear portion anchor ring that is positioned at described rear bearing group of described main shaft has rear end external screw thread, the rear thread positioning sleeve described rear end external screw thread that is threaded, the front end face of described rear thread positioning sleeve is close to the rear end face of described rear bearing group.
It is further characterized in that: the intermediate arrangement of described tetrad back to back angle contact bearing has the first spacer ring, the first spacer ring is divided into arrangement between two by described tetrad back to back angle contact bearing, the intermediate arrangement of described two back to back angle contact bearings has the second spacer ring, two of two back to back angle contact bearings angular contact bearings are arranged in respectively the both sides of described the second spacer ring, described the first spacer ring, the second spacer ring includes neck bush, external bushing, the section thickness of described neck bush is greater than the section thickness of described external bushing, it guarantees the pretightning force of whole bearing group,
The front end face of described sleeve has mounted cover drive end bearing bracket, the evagination rear end face of described drive end bearing bracket is close to the front end face of described fore bearing group, the front tuck pointing of described main shaft is loaded in the front end locating slot of described drive end bearing bracket, front shroud mounts cover the front end face in described drive end bearing bracket, and the outer ring surface of described front shroud, drive end bearing bracket is furnished with drip ring;
The rear end face of described sleeve has mounted cover rear end cap, locking nut external threading connects externally threaded front portion, described rear end, the front end face of described locking screw mother set is close to the rear end face of described rear thread positioning sleeve, before the front end outer shroud of described locking screw mother set, convex portion is flush-mounted in the interior caulking groove of described rear end cap, and post-planking cover is loaded on the rear end face of described rear end cap.
Adopt after structure of the present invention, because the two ends of described main shaft are respectively installed with tetrad back to back angle contact bearing, two back to back angle contact bearings, it makes bearing large for the pretightning force of main shaft, guarantee the precision of main shaft of head, rigidity, in addition due to tetrad back to back angle contact bearing, the axial location of two back to back angle contact bearings is respectively by preceding thread positioning sleeve, rear thread positioning sleeve, by threaded adjustment axial location, once the axial location of bearing occurs loosening, facilitate the axial location of fastening bearing, further guarantee the precision of main shaft of head, rigidity.
Accompanying drawing explanation
?fig. 1 is front view sectional structure schematic diagram of the present invention;
Fig. 2 is the sectional structure schematic diagram of neck bush of the present invention, external bushing;
In figure, the corresponding reference name of sequence number is as follows:
Sleeve 1, main shaft 2, centre bore 3, fore bearing group 4, rear bearing group 5, belt pulley 6, preceding thread positioning sleeve 7, rear thread positioning sleeve 8, the first spacer ring 9, the second spacer ring 10, neck bush 11, external bushing 12, drive end bearing bracket 13, front shroud 14, drip ring, rear end cap 16, locking screw mother set 17, interior caulking groove 18, back shroud 19.
The specific embodiment
A kind of main shaft of head structure, see Fig. 1: it comprises sleeve 1, main shaft 2, main shaft 2 runs through the centre bore 3 of sleeve 1, the two ends of main shaft 2 are respectively by fore bearing group 4, rear bearing group 5 is supported on the two ends of centre bore 3, the rear end of main shaft 2 exposes to sleeve 1, and be set with belt pulley 6, fore bearing group 4 is specially tetrad back to back angle contact bearing, rear bearing group 5 is specially two back to back angle contact bearings, location, the rear portion anchor ring that is positioned at fore bearing group 4 of main shaft 2 has external screw thread, preceding thread positioning sleeve 7 external screw thread that is threaded, the front end face of preceding thread positioning sleeve 7 is close to the rear end face of fore bearing group 4, location, the rear portion anchor ring that is positioned at rear bearing group 5 of main shaft 2 has rear end external screw thread, the rear thread positioning sleeve 8 rear end external screw thread that is threaded, the front end face of rear thread positioning sleeve 8 is close to the rear end face of rear bearing group 5.
The intermediate arrangement of tetrad back to back angle contact bearing has the first spacer ring 9, the first spacer ring 9 is divided into arrangement between two by tetrad back to back angle contact bearing, the intermediate arrangement of two back to back angle contact bearings has the second spacer ring 10, two of two back to back angle contact bearings angular contact bearings are arranged in respectively the both sides of the second spacer ring 10, the first spacer ring 9, the second spacer ring 10 include neck bush 11, external bushing 12, the section thickness H of neck bush 11 is greater than the section thickness D of external bushing 12, and it guarantees the pretightning force of whole bearing group.
The front end face of sleeve 1 has mounted cover drive end bearing bracket 13, the evagination rear end face of drive end bearing bracket 13 is close to the front end face of fore bearing group 4, the front tuck pointing of main shaft 2 is loaded in the front end locating slot of drive end bearing bracket 13, front shroud 14 mounts cover in the front end face of drive end bearing bracket 13, and the outer ring surface of front shroud 14, drive end bearing bracket 13 is furnished with drip ring 15; This structure is guaranteed the anterior axial location of main shaft 2.
The rear end face of sleeve 1 has mounted cover rear end cap 16, the locking screw mother set 17 externally threaded front portion, rear end that is threaded, the front end face of locking screw mother set 17 is close to the rear end face of rear thread positioning sleeve 8, before the front end outer shroud of locking screw mother set 17, convex portion is flush-mounted in the interior caulking groove 18 of rear end cap 16, back shroud 19 mounts cover in the rear end face of rear end cap 16, and this structure is guaranteed the rear portion axial location of main shaft 2.
Claims (4)
1. a main shaft of head structure, it comprises sleeve, main shaft, described main shaft runs through the centre bore of described sleeve, the two ends of described main shaft are supported on respectively the two ends of described centre bore by bearing, the rear end of described main shaft exposes to described sleeve, and be set with belt pulley, it is characterized in that: the two ends of described main shaft are respectively installed with fore bearing group, rear bearing group, described fore bearing group is specially tetrad back to back angle contact bearing, described rear bearing group is specially two back to back angle contact bearings, location, the rear portion anchor ring that is positioned at described fore bearing group of described main shaft has external screw thread, the preceding thread positioning sleeve described external screw thread that is threaded, the front end face of described preceding thread positioning sleeve is close to the rear end face of described fore bearing group, location, the rear portion anchor ring that is positioned at described rear bearing group of described main shaft has rear end external screw thread, the rear thread positioning sleeve described rear end external screw thread that is threaded, the front end face of described rear thread positioning sleeve is close to the rear end face of described rear bearing group.
2. a kind of main shaft of head structure according to claim 1, it is characterized in that: the intermediate arrangement of described tetrad back to back angle contact bearing has the first spacer ring, the first spacer ring is divided into arrangement between two by described tetrad back to back angle contact bearing, the intermediate arrangement of described two back to back angle contact bearings has the second spacer ring, two of two back to back angle contact bearings angular contact bearings are arranged in respectively the both sides of described the second spacer ring, described the first spacer ring, the second spacer ring includes neck bush, external bushing, the section thickness of described neck bush is greater than the section thickness of described external bushing.
3. a kind of main shaft of head structure according to claim 1, it is characterized in that: the front end face of described sleeve has mounted cover drive end bearing bracket, the evagination rear end face of described drive end bearing bracket is close to the front end face of described fore bearing group, the front tuck pointing of described main shaft is loaded in the front end locating slot of described drive end bearing bracket, front shroud mounts cover the front end face in described drive end bearing bracket, and the outer ring surface of described front shroud, drive end bearing bracket is furnished with drip ring.
4. a kind of main shaft of head structure according to claim 1, it is characterized in that: the rear end face of described sleeve has mounted cover rear end cap, locking nut external threading connects externally threaded front portion, described rear end, the front end face of described locking screw mother set is close to the rear end face of described rear thread positioning sleeve, before the front end outer shroud of described locking screw mother set, convex portion is flush-mounted in the interior caulking groove of described rear end cap, and post-planking cover is loaded on the rear end face of described rear end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410388274.2A CN104148678A (en) | 2014-08-08 | 2014-08-08 | Main shaft structure for vehicle head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410388274.2A CN104148678A (en) | 2014-08-08 | 2014-08-08 | Main shaft structure for vehicle head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104148678A true CN104148678A (en) | 2014-11-19 |
Family
ID=51874407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410388274.2A Pending CN104148678A (en) | 2014-08-08 | 2014-08-08 | Main shaft structure for vehicle head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104148678A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694975A (en) * | 2017-03-22 | 2017-05-24 | 宁波精益飞达轴业有限公司 | Milling head of worm whirlwind cutting machine |
| CN107538347A (en) * | 2016-06-29 | 2018-01-05 | 上海嵩基机械厂 | A kind of precision horizontal surface grinding machine main shaft |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201613356U (en) * | 2010-02-23 | 2010-10-27 | 天水星火机床有限责任公司 | High-speed plain spindle structure |
| JP2012035376A (en) * | 2010-08-09 | 2012-02-23 | Nsk Ltd | Main spindle device and machine tool equipped with the same |
| CN102728858A (en) * | 2012-07-06 | 2012-10-17 | 刘钊 | Detachable lathe electric spindle with air blowing device and built-in rotor |
| CN203664692U (en) * | 2014-01-21 | 2014-06-25 | 台州市路桥区精达轴承厂 | Lathe spindle |
| CN203664691U (en) * | 2014-01-21 | 2014-06-25 | 台州市路桥区精达轴承厂 | Turning lathe spindle |
-
2014
- 2014-08-08 CN CN201410388274.2A patent/CN104148678A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201613356U (en) * | 2010-02-23 | 2010-10-27 | 天水星火机床有限责任公司 | High-speed plain spindle structure |
| JP2012035376A (en) * | 2010-08-09 | 2012-02-23 | Nsk Ltd | Main spindle device and machine tool equipped with the same |
| CN102728858A (en) * | 2012-07-06 | 2012-10-17 | 刘钊 | Detachable lathe electric spindle with air blowing device and built-in rotor |
| CN203664692U (en) * | 2014-01-21 | 2014-06-25 | 台州市路桥区精达轴承厂 | Lathe spindle |
| CN203664691U (en) * | 2014-01-21 | 2014-06-25 | 台州市路桥区精达轴承厂 | Turning lathe spindle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107538347A (en) * | 2016-06-29 | 2018-01-05 | 上海嵩基机械厂 | A kind of precision horizontal surface grinding machine main shaft |
| CN106694975A (en) * | 2017-03-22 | 2017-05-24 | 宁波精益飞达轴业有限公司 | Milling head of worm whirlwind cutting machine |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141119 |
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| RJ01 | Rejection of invention patent application after publication |