CN104858694A - Self-centering clamp for thin-walled part - Google Patents
Self-centering clamp for thin-walled part Download PDFInfo
- Publication number
- CN104858694A CN104858694A CN201410063032.6A CN201410063032A CN104858694A CN 104858694 A CN104858694 A CN 104858694A CN 201410063032 A CN201410063032 A CN 201410063032A CN 104858694 A CN104858694 A CN 104858694A
- Authority
- CN
- China
- Prior art keywords
- thin
- expansion set
- axle
- self
- adjusting nut
- 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
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
- B23B31/4006—Gripping the work or tool by a split sleeve
- B23B31/4013—Details of the jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2215/00—Details of workpieces
- B23B2215/64—Thin walled components
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a self-centering clamp for a thin-walled part. The self-centering clamp comprises a mandrel, an expanding sleeve, an adjusting nut and a retaining ring, wherein the mandrel adopts a conical body; the inner wall of the expanding sleeve adopts a conical surface matched with the outer wall of the mandrel, and the outer wall of the expanding sleeve is a cylindrical surface; the expanding sleeve is matched and connected with the conical body of the mandrel through the conical surface of the inner wall; the front end of the expanding sleeve is connected with the step end surface at the rear end of the mandrel through a spring; the rear end of the expanding sleeve is contacted and connected with the adjusting nut through the retaining ring, and the adjusting nut is screwed at the threaded end of the mandrel; the expanding sleeve is sleeved with a flexible positioning sleeve. The self-centering clamp for the thin-walled part is simple in structure, workpieces are convenient to load and unload, self-centering can be realized, particularly, after the flexible positioning sleeve is used, the deformation of the thin-walled part is small in the machining process of clamping the thin-walled part, the machining precision is improved, and the coaxiality and the perpendicularity of the machined thin-walled part can be guaranteed; the expanding sleeve is loosened by the spring, so that the part is convenient to load, unload and machine.
Description
Technical field
The present invention relates to a kind of work piece holder, particularly a kind of self-centering fixture.
Background technology
In machining, some workpiece are positioned by its endoporus and are clamped, and existing fixture or complicated structure, be exactly unload cumbersome, and order scarcely can realize self-centering, often can not satisfy condition requirement, causes machining accuracy poor.Therefore, Chinese invention patent application number: 201110286659.4, disclose a kind of self-centering fixture, 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, the outer circumference of axle is arranged with a slidably baffle ring, axle is provided with a pair along the chute distributed in axle, the axle center of axle is hung with a pull bar, one end of pull bar and baffle ring are fixed by a pin, pin is through in a pair chute, and can slide along it, the other end of pull bar is fixed with a catch, the inwall of expansion set is the conicoid matched with the outer wall of axle, outer wall is column face, the nearly ring flange end of expansion set has the locating ring for axial location workpiece of circumference protrusion, expansion set axially offers multiple expansion joint being convenient to expand and shrink, expansion set is set between baffle ring and adjusting nut, when adjusting nut is to when the direction turn of described ring flange, the direction that expansion set increases to the external diameter of axle is moved and makes enlarged outside diameter, thus offset with the inwall of workpiece, when adjusting nut is to direction turn away from ring flange, the catch described in adjusting nut drives, by pull bar and baffle ring, makes expansion set move 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 is in the process of clamping thin-walled parts, easily thin-walled parts is caused to be out of shape.Particularly the distortion of thin-walled elongated workpieces is larger.
Summary of the invention
The present invention is the technical problem clamping machining deformation that will solve thin-walled parts, provides a kind of thin-walled parts self-centering fixture.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of thin-walled parts self-centering fixture, comprise axle, expansion set, adjusting nut, baffle ring, axle is cone, the inwall of expansion set is the conicoid matched with the outer wall of axle, outer wall is column face, expansion set is matchedly connected by inwall conicoid and axle cone, expansion set front end is connected with mandrels backend step end face by spring, the rear end of expansion set to be contacted with the adjusting nut be spun on spindle thread end by baffle ring and connects, and is socketed with flexible positioning sleeve outside expansion set.
Expansion set axially offers multiple expansion joint being convenient to expand and shrink.Flexible positioning sleeve is made up of the arcuate member of two semi-ring surfaces, and this two arcuate members periphery has multiple cavity type flexible slot respectively.
The invention has the beneficial effects as follows: structure is simple, workpiece easy to loading and unloading, and can self-centering be realized, after particularly employing flexible positioning sleeve, in the process of clamping thin-walled parts, thin-walled parts deflection is little, improve machining accuracy, axiality and the perpendicularity of the thin-walled parts after processing being ensured, by using spring to loosen expansion set, being convenient to load and unload processing parts.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present invention;
Fig. 2 is flexible locating sleeve structure sectional view;
Fig. 3 is expansion set structural upright schematic diagram;
Fig. 4 is the structure sectional view of clamping thin-walled parts of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As Fig. 1, shown in 4, a kind of thin-walled parts self-centering fixture, comprises axle 1, expansion set 2, flexible positioning sleeve 3, spring 4, baffle ring 5, adjusting nut 6.
Axle 1 is cone, the inwall of expansion set 2 is the conicoid matched with the outer wall of axle, outer wall is column face, expansion set 2 is matchedly connected by inwall conicoid and axle 1 cone, expansion set 2 front end is connected with axle 1 rear end step end face by spring 4, the rear end of expansion set 2 to be contacted with the adjusting nut 6 be spun on spindle thread end by baffle ring 5 and connects, and is socketed with flexible positioning sleeve 3 outside expansion set 2.
As shown in Figure 2, flexible positioning sleeve 3 is made up of the arcuate member of two semi-ring surfaces, and this two arcuate members periphery has multiple cavity type flexible slot respectively.
As shown in Figure 3, expansion set 2 axially offers multiple expansion joint being convenient to expand and shrink.
As shown in Figure 4, when adjusting nut 6 is to during near the direction precession of mandrels backend step end face, expansion set 2 moves to the direction that the external diameter of axle increases and makes enlarged outside diameter, and the inwall flexible contact of flexible positioning sleeve 3 and thin-walled parts 7 is pushed against.
When adjusting nut 6 screws out to the direction away from mandrels backend step end face, expansion set 2 is under spring 4 acts on, and the direction to the reduced diameter of axle 1 is moved, and flexible positioning sleeve 3 is separated with the inwall of thin-walled parts 7.
Claims (3)
1. a thin-walled parts self-centering fixture, comprise axle (1), expansion set (2), adjusting nut (6), baffle ring (5), it is characterized in that: described axle (1) is in cone, the inwall of expansion set (2) is the conicoid matched with the outer wall of axle (1), outer wall is column face, expansion set (2) is matchedly connected by inwall conicoid and axle (1) cone, expansion set (2) front end is connected with mandrels backend step end face by spring (4), the rear end of expansion set (2) is contacted with the adjusting nut be spun on spindle thread end (6) by baffle ring (5) and connects, flexible positioning sleeve (3) is socketed with outside expansion set (2).
2. the thin-walled parts self-centering fixture according to claim (1), is characterized in that: described expansion set (2) is upper axially offers multiple expansion joint being convenient to expand and shrink.
3. thin-walled parts self-centering fixture according to claim 1, is characterized in that: described flexible positioning sleeve (3) is made up of the arcuate member of two semi-ring surfaces, and this two arcuate members periphery has multiple cavity type flexible slot respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063032.6A CN104858694A (en) | 2014-02-23 | 2014-02-23 | Self-centering clamp for thin-walled part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063032.6A CN104858694A (en) | 2014-02-23 | 2014-02-23 | Self-centering clamp for thin-walled part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104858694A true CN104858694A (en) | 2015-08-26 |
Family
ID=53905085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410063032.6A Pending CN104858694A (en) | 2014-02-23 | 2014-02-23 | Self-centering clamp for thin-walled part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104858694A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415008A (en) * | 2015-12-11 | 2016-03-23 | 江西昌河航空工业有限公司 | Elastic locating and clamping device with reset function |
| CN106685159A (en) * | 2016-12-29 | 2017-05-17 | 台州深度新能源科技有限公司 | Segmented and skewed pole motor rotor assembly tooling and assembly process thereof |
| CN108436124A (en) * | 2018-05-18 | 2018-08-24 | 兰州城市学院 | A kind of symmetrical bikini expanding arbor fixture |
| CN109759858A (en) * | 2019-02-14 | 2019-05-17 | 大族激光科技产业集团股份有限公司 | Frock clamp |
| CN110025286A (en) * | 2019-05-05 | 2019-07-19 | 厦门通测电子有限公司 | A kind of lens box for optometry automatic calibrator and calibration method |
| CN111659932A (en) * | 2020-06-16 | 2020-09-15 | 韩文飞 | Thin-wall pipe fitting drilling clamp with internal floating support |
| CN112059226A (en) * | 2020-08-11 | 2020-12-11 | 大连理工大学 | Adjustable hydraulic expansion mandrel and method |
| CN112719957A (en) * | 2020-12-24 | 2021-04-30 | 重庆交通职业学院 | Thin-wall cylindrical part clamp |
| CN114536067A (en) * | 2022-02-25 | 2022-05-27 | 常州机电职业技术学院 | Special expandable mandrel finish turning clamp for eccentric sleeve |
-
2014
- 2014-02-23 CN CN201410063032.6A patent/CN104858694A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415008A (en) * | 2015-12-11 | 2016-03-23 | 江西昌河航空工业有限公司 | Elastic locating and clamping device with reset function |
| CN106685159A (en) * | 2016-12-29 | 2017-05-17 | 台州深度新能源科技有限公司 | Segmented and skewed pole motor rotor assembly tooling and assembly process thereof |
| CN106685159B (en) * | 2016-12-29 | 2020-01-21 | 台州深度新能源科技有限公司 | Segmented skewed-pole motor rotor assembling tool and assembling process thereof |
| CN108436124B (en) * | 2018-05-18 | 2024-02-06 | 兰州城市学院 | Symmetrical three-point type expandable mandrel clamp |
| CN108436124A (en) * | 2018-05-18 | 2018-08-24 | 兰州城市学院 | A kind of symmetrical bikini expanding arbor fixture |
| CN109759858A (en) * | 2019-02-14 | 2019-05-17 | 大族激光科技产业集团股份有限公司 | Frock clamp |
| CN110025286A (en) * | 2019-05-05 | 2019-07-19 | 厦门通测电子有限公司 | A kind of lens box for optometry automatic calibrator and calibration method |
| CN111659932A (en) * | 2020-06-16 | 2020-09-15 | 韩文飞 | Thin-wall pipe fitting drilling clamp with internal floating support |
| CN111659932B (en) * | 2020-06-16 | 2021-05-14 | 韩文飞 | Thin-wall pipe fitting drilling clamp with internal floating support |
| CN112059226B (en) * | 2020-08-11 | 2021-07-16 | 大连理工大学 | Adjustable hydraulic expansion mandrel and method |
| CN112059226A (en) * | 2020-08-11 | 2020-12-11 | 大连理工大学 | Adjustable hydraulic expansion mandrel and method |
| CN112719957A (en) * | 2020-12-24 | 2021-04-30 | 重庆交通职业学院 | Thin-wall cylindrical part clamp |
| CN114536067A (en) * | 2022-02-25 | 2022-05-27 | 常州机电职业技术学院 | Special expandable mandrel finish turning clamp for eccentric sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150826 |