CN203804573U - Rolling type support centre frame - Google Patents
Rolling type support centre frame Download PDFInfo
- Publication number
- CN203804573U CN203804573U CN201420260277.3U CN201420260277U CN203804573U CN 203804573 U CN203804573 U CN 203804573U CN 201420260277 U CN201420260277 U CN 201420260277U CN 203804573 U CN203804573 U CN 203804573U
- Authority
- CN
- China
- Prior art keywords
- chuck
- support
- centre frame
- speed
- claws
- 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 - Lifetime
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 21
- 210000000078 claw Anatomy 0.000 claims description 20
- 238000010276 construction Methods 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 238000003754 machining Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Gripping On Spindles (AREA)
Abstract
The utility model discloses a rolling type support centre frame which comprises a chuck supporting plate, a support chuck and a connecting base plate. The support chuck is fixed to the upper end of the chuck supporting plate, and the lower end of the chuck supporting plate is connected with the connecting base plate through a quick-change structure. The support chuck comprises a three-jaw chuck body, three jaws and three high-speed bearings, the jaws are arranged on the three-jaw chuck body along the radius thereof, and the high-speed bearings are respectively arranged at the inner ends of the jaws. The rolling type support centre frame has the advantages of automatic centering and quick clamping and facilitates clamping of workpieces. Further, since the high-speed bearings mounted on the jaws roll relative to the workpieces, abrasion loss of the common three-jaw centre frame is eliminated and requirements for high-speed machining are guaranteed.
Description
Technical field
The utility model relates to a kind of supporting center frame, relates in particular to a kind of rolling support centre frame.
Background technology
In big L/D ratio Machining of Shaft-type Parts process, for preventing part radial deformation, adopt center rest support part, support member be generally hardness lower, there is certain lubricated material and do contact support member, as grey casting.Because gray cast iron material hardness is low, wear no resistance, it is also not obvious when workpiece rotational frequency is lower, when rotating, accelerates with wearing and tearing Work piece high-speed thereupon, for example, when producing camshaft product in batches, because camshaft is the high-precision part of engine air distribution system, guarantee Product Precision, reduce roughness and need to improve as far as possible lathe rotating speed, and under high rotating speed, aggravate the damage of center rest support piece, and because between centre frame and workpiece be sliding friction, sliding friction pair produces heat under high-speed motion, with speed, increasing wearing and tearing increases exponentially, machining accuracy is reduced.
Utility model content
The purpose of this utility model provides a kind of rolling support centre frame with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of rolling support centre frame, comprise chuck support plate, support chuck and connecting bottom board, described support chuck is fixed on the upper end of described chuck support plate, the lower end of described chuck support plate is connected with described connecting bottom board by quick change construction, described support chuck comprises scroll chuck, three claws and three high-speed bearings, three described claws are all arranged on described scroll chuck along the radial direction of described scroll chuck, and three described high-speed bearings are separately positioned on the inner of three described claws.
By three high-speed bearings, by sliding friction, change the contact-making surface of workpiece and centre frame into rolling friction, contact-making surface coefficient of friction is reduced, to adapt to Work piece high-speed, rotate needs.
Particularly, the angle between three described claws is 120 °, and equates with the distance between the center of circle of described scroll chuck, and three described claws can slide along the radial direction of described scroll chuck.
The claw evenly arranging makes this centre frame have automatic centering function, simultaneously by regulating the position of claw on scroll chuck can make the high-speed bearing of claw the inner and workpiece form rolling friction pair.
Further, on described high-speed bearing, be provided with lubricating arrangement and anti-bits device.
The beneficial effects of the utility model are:
The utility model rolling support centre frame has advantages of self-centering, Quick-clamped, make clamping workpiece convenient and swift, the high-speed bearing being simultaneously arranged on three-jaw rotates and forms relative rolling with workpiece, to eliminate the grinding loss of common three-jaw centre frame, guarantees the needs of High-speed machining.
Accompanying drawing explanation
Fig. 1 is the front view of rolling support centre frame described in the utility model;
Fig. 2 is the side view of rolling support centre frame described in the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As depicted in figs. 1 and 2, the utility model rolling support centre frame, comprise chuck support plate 1, support chuck 2 and connecting bottom board 3, support chuck 2 is fixed on the upper end of chuck support plate 1, the lower end of chuck support plate 1 is connected with connecting bottom board 3 by quick change construction, support chuck 2 comprises scroll chuck 6, three claws 4 and three high-speed bearings 5, three claws 4 are all arranged on scroll chuck 6 along the radial direction of scroll chuck 6, three high-speed bearings 5 are separately positioned on the inner of three claws 4, angle between three claws 4 is 120 °, and equate with the distance between the center of circle of scroll chuck 6, three claws 4 can slide along the radial direction of scroll chuck 6, on high-speed bearing 5, be provided with lubricating arrangement and anti-bits device.
The operation principle of the utility model rolling support centre frame is as follows:
Support chuck 2 is fixed on chuck support plate 1, the bottom of chuck support plate 1 is made into the quick change construction of standard, can be fast from different connecting bottom board 3 exchange to use with different equipment on, during work, workpiece is passed from centre frame center, regulate the position of claw 4 on scroll chuck 6 that high-speed bearing 5 is contacted with workpiece, form rolling friction pair.
The rolling pair forming with the high-speed bearing 5 on three claws 4 and workpiece in process substitutes the sliding friction of generic central frame, contact friction force is greatly reduced, lubricating arrangement in high-speed bearing 5 mechanisms and anti-bits device guarantee bearing high speed rotating environment simultaneously, make rolling support central frame mechanism have good high speed performance.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion of making according to the technical solution of the utility model, within all falling into protection domain of the present utility model.
Claims (3)
1. a rolling support centre frame, comprise chuck support plate, support chuck and connecting bottom board, described support chuck is fixed on the upper end of described chuck support plate, the lower end of described chuck support plate is connected with described connecting bottom board by quick change construction, it is characterized in that: described support chuck comprises scroll chuck, three claws and three high-speed bearings, three described claws are all arranged on described scroll chuck along the radial direction of described scroll chuck, and three described high-speed bearings are separately positioned on the inner of three described claws.
2. rolling support centre frame according to claim 1, it is characterized in that: the angle between three described claws is 120 °, and equate with the distance between the center of circle of described scroll chuck, three described claws can slide along the radial direction of described scroll chuck.
3. rolling support centre frame according to claim 1, is characterized in that: on described high-speed bearing, be provided with lubricating arrangement and anti-bits device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260277.3U CN203804573U (en) | 2014-05-20 | 2014-05-20 | Rolling type support centre frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260277.3U CN203804573U (en) | 2014-05-20 | 2014-05-20 | Rolling type support centre frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203804573U true CN203804573U (en) | 2014-09-03 |
Family
ID=51443382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420260277.3U Expired - Lifetime CN203804573U (en) | 2014-05-20 | 2014-05-20 | Rolling type support centre frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203804573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043213A (en) * | 2015-05-05 | 2015-11-11 | 贵州航天工业学校 | Three-claw centering type detection device for shaft-type parts |
| CN106378467A (en) * | 2016-10-20 | 2017-02-08 | 成都久欣时代科技有限公司 | Movable tool main shaft device |
-
2014
- 2014-05-20 CN CN201420260277.3U patent/CN203804573U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043213A (en) * | 2015-05-05 | 2015-11-11 | 贵州航天工业学校 | Three-claw centering type detection device for shaft-type parts |
| CN105043213B (en) * | 2015-05-05 | 2018-09-07 | 贵州航天工业学校 | A kind of three-jaw centering formula axial workpiece detection device |
| CN106378467A (en) * | 2016-10-20 | 2017-02-08 | 成都久欣时代科技有限公司 | Movable tool main shaft device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |