CN201394875Y - Support with hydraulic expansion and rotation function - Google Patents
Support with hydraulic expansion and rotation function Download PDFInfo
- Publication number
- CN201394875Y CN201394875Y CN2009200797102U CN200920079710U CN201394875Y CN 201394875 Y CN201394875 Y CN 201394875Y CN 2009200797102 U CN2009200797102 U CN 2009200797102U CN 200920079710 U CN200920079710 U CN 200920079710U CN 201394875 Y CN201394875 Y CN 201394875Y
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- CN
- China
- Prior art keywords
- bearing
- sleeve
- cavity
- inner sleeve
- rotating shaft
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a support with hydraulic expansion and rotation, which comprises a bearing outer sleeve and a rotatable rotating part installed in the bearing outer sleeve, wherein, the rotating part comprises components such as a bearing inner sleeve and the like, as well as an expansion sleeve installed on the inner side of the bearing inner sleeve and in contact with a rotating shaft, a pressure adjusting bolt is further arranged on the bearing inner sleeve, a piston is installed at the free end of the pressure adjusting bolt, a cavity is formed between the expansion sleeve andthe bearing inner sleeve, the cavity and the piston form a closed pressure cavity, and the closed pressure cavity is filled with pressure oil. The support with hydraulic expansion and rotation function, with the expansion sleeve in clearance fit with the rotating shaft under normal pressure conditions, allows for frequent assembly and disassembly with ease. When the pressure adjusting bolt, by being screwed, advances or retreats in contracting or expanding the oil in the cavity, the expansion sleeve is subject to subtle deformation, with the rotating part in the bearing outer sleeve in zero-clearance fit with the rotating shaft, so that the rotating shaft, when rotating at a high speed, can maintain good rigidity despite of exposure to high load.
Description
Technical field
The utility model relates to the support component of turning cylinder in a kind of woodworking machinery, a kind of specifically band hydraulic pressure swelling swivel bearing of rotation at a high speed that is used for.
Background technology
In carpenter's processing industry, high-speed rotating shaft need also will have accurate precision and sealing property simultaneously keeping high-revolving.Prior art is studied the sealing of raising high-speed rotating shaft supporting arrangement and the rigidity of rotating shaft, as the Chinese invention patent application, publication number CN101123376, in a kind of high-speed woodworker power principle axis is disclosed, comprise main shaft, stator and rotor, angular contact ball bearing before the preceding shaft extension end of main shaft is provided with two, be provided with cone spacer and outer ring spacer before two in the middle of the angular contact ball bearing, the back shaft extension end of main shaft is provided with two back angular contact ball bearings, is provided with cone spacer and outer ring spacer in the middle of the two back angular contact ball bearings.This invention mainly is to cooperate each other by above-mentioned bearing arrangement and bearing, satisfies the requirement of bearing radial force, axial force and rigidity simultaneously of main shaft shaft extension end, also can solve the dustproof problem, satisfies the requirement of present stage numerical control wood processing equipment.
The utility model content
The purpose of this utility model is: provide a kind of can easy disassembly, can satisfy the hydraulic pressure swelling block bearing of supporting rigidity and sealing property.
The technical solution of the utility model is:
A kind of band hydraulic pressure swelling swivel bearing, comprise bearing outside and the rotating rotating part that is installed in the bearing outside, it is characterized in that: this rotating part comprises bearing inner sleeve and the rolling bearing between the overcoat in bearing, and be installed in the inboard expansion sleeve that contacts with rotating shaft of bearing inner sleeve, on bearing inner sleeve, also be provided with a pressure regulating screw, the free end of pressure regulating screw is equipped with piston, one cavity is arranged between expansion sleeve and bearing inner sleeve, airtight pressure chamber of the common formation of this cavity and piston is filled with pressure oil in airtight pressure chamber.
Supplementary technology scheme of the present utility model is as follows:
Preferably, on piston, be with sealing ring.
Preferably, between bearing inner sleeve and expansion sleeve, sealing ring is installed.
Preferably, described hydraulic pressure swelling block bearing is a ball bearing.
The beneficial effects of the utility model are: expansion sleeve and rotating shaft are matched in clearance under normal pressure, convenient frequent dismounting, advance and the oil pressure in the cavity can be contracted when turning pressure regulating screw, can make expansion sleeve produce faint distortion, make rotating part and rotating shaft in the bearing inner sleeve tightly embrace together, form no gap and cooperate, when the rotating shaft high speed rotating, even be subjected to high load capacity, rotating shaft also maintains favorable rigidity.Retreat and to make expansion sleeve produce faint distortion the oily release in the cavity when turning pressure regulating screw, make to disassemble rotating part and the rotating shaft matched in clearance that bearing inner sleeve is interior thereby conveniently will install from rotating shaft.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the schematic diagram of the utility model band hydraulic pressure swelling swivel bearing specific embodiment.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Specific embodiment of the utility model, as shown in Figure 1, a kind of band hydraulic pressure swelling swivel bearing, comprise bearing outside 3 and the rotating rotating part that is installed in the bearing outside 3, this rotating part comprises bearing inner sleeve 5 and the rolling bearing between the overcoat 8 in bearing, and the expansion sleeve 2 that contacts with rotating shaft 4 of bearing inner sleeve 5 installed inside is (for frequent dismounting, expansion sleeve 2 is a matched in clearance with rotating shaft 4 under the normal pressure), on bearing inner sleeve 5, also be provided with a pressure regulating screw 6, the free end of pressure regulating screw 6 is equipped with piston 7, one cavity 9 is arranged between expansion sleeve 2 and bearing inner sleeve 5, airtight pressure chamber of this cavity 9 and piston 7 common formation is filled with pressure oil in the seal-off pressure chamber.Bearing outside 3 can be fixed on mechanism's holder in addition.Turning pressure regulating screw 6 advances or retreats and the pressure oil in the seal-off pressure chamber can be compressed or release, the compression of pressure oil can make expansion sleeve 2 produce faint distortion (general 30MPa can compress 0.04mm), expansion sleeve 2 and rotating shaft 4 are tightly embraced together, forming no gap cooperates, during rotating shaft 4 high speed rotating, even be subjected to high load capacity, rotating shaft 10 also has favorable rigidity.
In order to keep the sealing property in the foregoing description.Preferably, on piston, be with sealing ring, sealing ring 1 is installed between bearing inner sleeve and expansion sleeve.
The spring bearing 8 that band hydraulic pressure swelling swivel bearing in the foregoing description is used can be ball bearing or roller bearing or sliding bearing, and its mechanism is similar, difference be that bearing outside 3 and rotating part distribute and structural change.
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1, a kind of band hydraulic pressure swelling swivel bearing, comprise bearing outside (3) and be installed in rotating rotating part in the bearing outside (3), it is characterized in that: this rotating part comprises bearing inner sleeve (5) and the rolling bearing between the overcoat (8) in bearing, and be installed in the inboard expansion sleeve (2) that contacts with rotating shaft (4) of bearing inner sleeve (5), on bearing inner sleeve (5), also be provided with a pressure regulating screw (6), the free end of pressure regulating screw (6) is equipped with piston (7), one cavity (9) is arranged between expansion sleeve (2) and bearing inner sleeve (5), this cavity (9) forms an airtight pressure chamber jointly with piston (7), is filled with pressure oil in airtight pressure chamber.
2. band hydraulic pressure swelling swivel bearing according to claim 1 is characterized in that, is with sealing ring on piston (7).
3. band hydraulic pressure swelling swivel bearing according to claim 1 is characterized in that, between bearing inner sleeve (5) and expansion sleeve (2) sealing ring (1) is installed.
4. band hydraulic pressure swelling swivel bearing according to claim 1 is characterized in that described rolling bearing (8) is a ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200797102U CN201394875Y (en) | 2009-03-24 | 2009-03-24 | Support with hydraulic expansion and rotation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200797102U CN201394875Y (en) | 2009-03-24 | 2009-03-24 | Support with hydraulic expansion and rotation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201394875Y true CN201394875Y (en) | 2010-02-03 |
Family
ID=41617371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200797102U Expired - Fee Related CN201394875Y (en) | 2009-03-24 | 2009-03-24 | Support with hydraulic expansion and rotation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201394875Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493585A (en) * | 2016-12-20 | 2017-03-15 | 力劲精密机械（昆山）有限公司 | Direct-drive type pallet changer based on positioning and locking |
| CN109682522A (en) * | 2019-01-22 | 2019-04-26 | 昆山市烽禾升精密机械有限公司 | Zero clearance non-resistance clamps rotating mechanism |
-
2009
- 2009-03-24 CN CN2009200797102U patent/CN201394875Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493585A (en) * | 2016-12-20 | 2017-03-15 | 力劲精密机械（昆山）有限公司 | Direct-drive type pallet changer based on positioning and locking |
| CN109682522A (en) * | 2019-01-22 | 2019-04-26 | 昆山市烽禾升精密机械有限公司 | Zero clearance non-resistance clamps rotating mechanism |
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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: 20100203 Termination date: 20140324 |