CN203778797U - Flexible self-centering clamp for thin-walled sleeve - Google Patents
Flexible self-centering clamp for thin-walled sleeve Download PDFInfo
- Publication number
- CN203778797U CN203778797U CN201420079241.5U CN201420079241U CN203778797U CN 203778797 U CN203778797 U CN 203778797U CN 201420079241 U CN201420079241 U CN 201420079241U CN 203778797 U CN203778797 U CN 203778797U
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- thin
- axle
- flexible
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- screw rod
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Abstract
The utility model relates to a flexible self-centering clamp for a thin-walled sleeve. Through slots are respectively formed in two ends of a mandrel; a press plate is movably matched and connected in each through slot; a positioning sleeve is matched and connected onto the outer cylinder of the mandrel; flexible positioning tension rings are respectively arranged between two sides of the positioning sleeve and the press plates; the two press plates are connected with a threaded shaft at two sides of a screw rod in a central hole in the mandrel; one press plate is in left threaded connection with the threaded shaft of the screw rod; the other press plate is in right treaded connection with the threaded shaft of the screw rod; the inside surface of the threaded shaft at two sides of the screw rod are respectively in contact connection with the inner end surfaces at two sides in the central hole of the mandrel; the front end of the mandrel is fixedly connected with a flange. The flexible self-centering clamp for the thin-walled sleeve is simple in structure and can realize self centering; particularly, after the use of the flexible positioning tension rings, in the clamping and machining process of the thin-walled long part, the thin-walled long part is clamped by using the flexible positioning tension rings, the deformation of the machined thin-walled long part is small, the positioning precision is high, the coaxiality and perpendicularity of the machined thin-walled long part are ensured, and the thin-walled long part is convenient to assemble and disassemble.
Description
Technical field
The utility model relates to a kind of thin-walled parts centralizer, particularly a kind of self-centering fixture of thin-walled parts.
Background technology
In machining, some workpiece are positioned and are clamped by its endoporus, and existing fixture or complicated structure, be exactly unload cumbersome, and order scarcely can realize self-centering, the requirement that often can not satisfy condition, causes machining accuracy poor.Therefore, Chinese invention patent application number: 201110286659.4, a kind of self-centering fixture is disclosed, axle is the cone of hollow, and the external diameter of nearly ring flange end is greater than the external diameter of ring flange end far away, the ring flange end far away of axle has one section of external screw thread, this section of external screw thread place is equipped with adjusting nut, axle is circumferentially arranged with a slidably baffle ring outward, axle is provided with a pair of chute along distributing in axle, the axle center of axle is hung with a pull bar, one end of pull bar and baffle ring fix by a pin, pin is through in a pair of chute, and can slide along it, the other end of pull bar is fixed with a catch, the conicoid that the inwall of expansion set matches for the outer wall with axle, outer wall is column face, the nearly ring flange end of expansion set has the locating ring for axial location workpiece of circumferential protrusion, on expansion set, axially offer a plurality of expansion joints of being convenient to expansion and shrinking, expansion set is set between baffle ring and adjusting nut, when adjusting nut is during to direction turn near described ring flange, expansion set moves and external diameter is expanded to the direction of the external diameter increase of axle, thereby offset with the inwall of workpiece, when adjusting nut is during to direction turn away from ring flange, adjusting nut drives described catch by pull bar and baffle ring, and expansion set is moved to the direction of the reduced diameter of described axle, the reduced diameter of expansion set and being separated with the inwall of workpiece.But this fixture, in the process of clamping thin-walled parts, easily causes thin-walled parts distortion.Particularly the distortion of thin-walled elongated workpieces is larger.
Summary of the invention
The utility model is the technical problem that clamps machining deformation that will solve thin-walled elongated workpieces, and a kind of flexible self-centering fixture for thin walled cylinder body is provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of flexible self-centering fixture for thin walled cylinder body, comprise axle, flange, pressing plate, screw rod, positioning sleeve, axle two ends have groove, the activity pressing plate that is connected in groove, positioning sleeve is connected in axle outside cylinder, flexible positioning expander collar is housed respectively between positioning sleeve both sides and pressing plate, two block pressur plates are connected with the thread spindle of screw rod both sides in axle centre bore respectively, wherein, one block pressur plate is connected with screw flight axle left-hand thread, another block pressur plate is connected with screw flight axle right-hand thread, the thread spindle medial surface of screw rod both sides is connected with the both sides inner face contact in axle centre bore respectively, the front end of axle is fixedly connected with flange.
Positioning sleeve external cylindrical surface is connected with thin-walled elongated workpieces endoporus matched in clearance.While clamping thin-walled elongated workpieces, contact is connected with pressing plate with positioning sleeve respectively in flexible positioning expander collar both sides.Between positioning sleeve and axle, interference fit is connected.Flexible positioning expander collar is rubber positioning expander collar.
The beneficial effects of the utility model are: simple in structure, workpiece easy to loading and unloading, and can realize self-centering, particularly used after flexible positioning expander collar, in the process of clamping thin-walled elongated workpieces, by flexible positioning expander collar, clamped thin-walled elongated workpieces, make the thin-walled elongated workpieces deflection after processing little, positioning precision is high, can guarantee axiality and the perpendicularity of the thin-walled elongated workpieces after processing, and is convenient to the handling of thin-walled elongated workpieces.
Accompanying drawing explanation
Fig. 1 is structure cutaway view of the present utility model;
Fig. 2 is along the cutaway view of A-A in Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As Fig. 1, shown in 2, a kind of flexible self-centering fixture for thin walled cylinder body, comprises axle 1, flange 2, positioning sleeve 3, flexible positioning expander collar 4, pressing plate 5, screw rod 6.
Axle 1 two ends have groove, the activity pressing plate 5 that is connected in groove, positioning sleeve 3 is connected in axle 1 outside cylinder, flexible positioning expander collar 4 is housed respectively between positioning sleeve 3 both sides and pressing plate 5, two block pressur plates 5 are connected with the thread spindle of screw rod 6 both sides in axle 1 centre bore respectively, wherein, one block pressur plate 5 is connected with the thread spindle left-hand thread of screw rod 6, another block pressur plate 5 is connected with the thread spindle right-hand thread of screw rod 6, the thread spindle medial surface of screw rod 6 both sides is connected with the both sides inner face contact in axle 1 centre bore respectively, the front end of axle 1 is fixedly connected with flange 2.
Positioning sleeve 3 external cylindrical surfaces are connected with thin-walled elongated workpieces 7 endoporus matched in clearance.While clamping thin-walled elongated workpieces 7,5 contacts are connected with pressing plate with positioning sleeve 3 respectively in flexible positioning expander collar 4 both sides.Between positioning sleeve 3 and axle 1, interference fit is connected.Flexible positioning expander collar 4 is rubber positioning expander collar.
When rotating screw bolt 6, two block pressur plates, under left and right thread spindle effect, inwardly push flexible positioning expander collar 4, make the outside expansion of flexible positioning expander collar 4 contact and push against with the inwall of thin-walled elongated workpieces 7.
When rotating backward screw rod 6, two block pressur plates are under left and right thread spindle effect, and outwards mobile and flexible positioning expander collar 4 is unclamped, and flexible positioning expander collar 4 is inwardly shunk with the inwall of thin-walled elongated workpieces 7 and is separated under elastic reaction.
Claims (5)
1. the flexible self-centering fixture for thin walled cylinder body, comprise axle (1), flange (2), positioning sleeve (3), it is characterized in that: described axle (1) two ends have groove, the activity pressing plate (5) that is connected in groove, positioning sleeve (3) is connected in axle (1) outside cylinder, between positioning sleeve (3) both sides and pressing plate (5), flexible positioning expander collar (4) is housed respectively, two block pressur plates (5) are connected with the thread spindle of screw rod (6) both sides in axle (1) centre bore respectively, wherein, one block pressur plate (5) is connected with the thread spindle left-hand thread of screw rod (6), another block pressur plate (5) is connected with the thread spindle right-hand thread of screw rod (6), the thread spindle medial surface of screw rod (6) both sides is connected with the both sides inner face contact in axle (1) centre bore respectively, the front end of axle (1) is fixedly connected with flange (2).
2. the flexible self-centering fixture for thin walled cylinder body according to claim 1, is characterized in that: described positioning sleeve (3) external cylindrical surface is connected with thin-walled elongated workpieces (7) endoporus matched in clearance.
3. the flexible self-centering fixture for thin walled cylinder body according to claim 1, it is characterized in that: while clamping thin-walled elongated workpieces (7), contact is connected with pressing plate (5) with positioning sleeve (3) respectively in described flexible positioning expander collar (4) both sides.
4. the flexible self-centering fixture for thin walled cylinder body according to claim 1, is characterized in that: between described positioning sleeve (3) and axle (1), interference fit is connected.
5. the flexible self-centering fixture for thin walled cylinder body according to claim 1, is characterized in that: described flexible positioning expander collar (4) is rubber positioning expander collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079241.5U CN203778797U (en) | 2014-02-23 | 2014-02-23 | Flexible self-centering clamp for thin-walled sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079241.5U CN203778797U (en) | 2014-02-23 | 2014-02-23 | Flexible self-centering clamp for thin-walled sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203778797U true CN203778797U (en) | 2014-08-20 |
Family
ID=51315025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079241.5U Expired - Fee Related CN203778797U (en) | 2014-02-23 | 2014-02-23 | Flexible self-centering clamp for thin-walled sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203778797U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385187A (en) * | 2014-11-16 | 2015-03-04 | 重庆瑞普电缆有限公司 | Pneumatic rubber expansion core shaft |
| CN104607682A (en) * | 2014-12-17 | 2015-05-13 | 重庆第二机床厂有限责任公司 | Positioning method for high-precision machining of thin-walled workpiece |
| CN108857910A (en) * | 2018-06-19 | 2018-11-23 | 江西昌河航空工业有限公司 | A kind of odd-shaped cross section thin-walled chamber class part shot peening strengthening flexible fixture |
| CN112453865A (en) * | 2020-11-17 | 2021-03-09 | 郑州云启工业设备技术有限公司 | Butterfly plate combination device of butterfly valve assembling machine |
| CN113059073A (en) * | 2021-03-29 | 2021-07-02 | 浙江大学 | Inner centering mechanism for bending and forming flange large-diameter pipe fitting |
-
2014
- 2014-02-23 CN CN201420079241.5U patent/CN203778797U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385187A (en) * | 2014-11-16 | 2015-03-04 | 重庆瑞普电缆有限公司 | Pneumatic rubber expansion core shaft |
| CN104385187B (en) * | 2014-11-16 | 2018-10-19 | 重庆瑞普电缆有限公司 | Pneumatic rubber expanding arbor |
| CN104607682A (en) * | 2014-12-17 | 2015-05-13 | 重庆第二机床厂有限责任公司 | Positioning method for high-precision machining of thin-walled workpiece |
| CN108857910A (en) * | 2018-06-19 | 2018-11-23 | 江西昌河航空工业有限公司 | A kind of odd-shaped cross section thin-walled chamber class part shot peening strengthening flexible fixture |
| CN112453865A (en) * | 2020-11-17 | 2021-03-09 | 郑州云启工业设备技术有限公司 | Butterfly plate combination device of butterfly valve assembling machine |
| CN112453865B (en) * | 2020-11-17 | 2022-01-14 | 深圳市汇鑫通源科技有限公司 | Butterfly plate combination device of butterfly valve assembling machine |
| CN113059073A (en) * | 2021-03-29 | 2021-07-02 | 浙江大学 | Inner centering mechanism for bending and forming flange large-diameter pipe fitting |
| CN113059073B (en) * | 2021-03-29 | 2022-03-11 | 浙江大学 | Inner centering mechanism for bending and forming flange large-diameter pipe fitting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20150223 |
|
| EXPY | Termination of patent right or utility model |