CN102921983A - Internal expanding type clamp device - Google Patents
Internal expanding type clamp device Download PDFInfo
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- CN102921983A CN102921983A CN2012104336084A CN201210433608A CN102921983A CN 102921983 A CN102921983 A CN 102921983A CN 2012104336084 A CN2012104336084 A CN 2012104336084A CN 201210433608 A CN201210433608 A CN 201210433608A CN 102921983 A CN102921983 A CN 102921983A
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- main shaft
- mandrel
- guide pillar
- mandrels
- clamping device
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Abstract
The invention provides an internal expanding type clamp device which is composed of a main shaft and two expanding components arranged on the main shaft. The expanding components comprise adjusting seats, connection bodies, spring clamp sleeves and mandrels which are arranged successively around the main shaft. The adjusting seats are connected with the main shaft through thread pairs; one ends of the connection bodies are fixed with the adjusting seats, and the other ends are connected with the spring clamp sleeves; one ends of guide pillars are connected with the connection bodies, and the other ends stretch into holes of the mandrels; and the mandrels are connected with the mains shafts through bearings, the outer surfaces of the mandrels are in non-clearance fit with inclined inner surfaces of the spring clamp sleeves. By means of the internal expanding type clamp device, inner circles, outer circles and end surfaces of workpieces can be processed through one-time clamping, and accordingly, the processing accuracy is improved, the form and location tolerance of processed positions is guaranteed, and the clamp device has the advantages of being high in processing efficiency, good in accuracy consistency, high in product qualified rate, low in manufacture cost and the like.
Description
Technical field
The invention belongs to a kind of clamping device, be specifically related to a kind of mach internal expansion type clamping device of thin-wall long cylinder class workpiece that is applicable to.
Background technology
The long cylinder of thin-walled class diameter of work is large, wall is thin, and its draw ratio is large, rigidity is low, and is yielding when processing, clamping, therefore, how to make the long cylinder of thin-walled class workpiece have the difficult problem that higher machining accuracy becomes field of machining.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of internal expansion type clamping device.
Technical scheme of the present invention is: comprise main shaft and two tensioner assemblies that are installed on the main shaft, described tensioner assembly comprises adjusting nut, adjusting seat, connector, spring chuck and the mandrel that sets gradually around main shaft.Wherein, adjusting nut is connected screw thread pair and is connected with main shaft with adjusting seat, and an end of connector is fixed by locking nut and adjusting seat, and the other end adopts screw to be connected with the spring chuck with slide plate.
Also be fixed with guide pillar on slide plate, guide pillar stretches in the blind hole that is arranged at mandrel, and can move along blind hole.Bearing links together mandrel and main shaft by packing ring, clamp nut, and the spring chuck is a cylinder that is enclosed within mandrel outside, and the external diameter of cylinder is constant, and internal diameter is from left to right by littlely becoming gradually large, forming certain gradient.
The number of described guide pillar is two, is positioned at the both sides of main shaft, also symmetrical.
The degree of depth of blind hole can make guide pillar stretch into fully on the described mandrel.
The present invention is installed in respectively two tensioner assembly relative directions on the main shaft, relatively move by turning tensioner assembly and main shaft, the tensioner of finishing the long cylinder of thin-walled workpiece with unclamp, realize that clamped one time can be to inner circle, cylindrical and the end face processing of workpiece, improved machining accuracy, guarantee each working position form and position tolerance, had the advantages such as working (machining) efficiency height, precision high conformity, product percent of pass height, low cost of manufacture.
Description of drawings
Fig. 1 is the front view of internal expansion type clamping device of the present invention;
Fig. 2 is the half sectional view of tensioner assembly;
Fig. 3 is the structural representation of slide plate;
Wherein:
1 tensioner assembly, 2 main shafts
The long cylinder of 3 thin-walleds workpiece 4 adjusting nuts
5 adjusting seats, 6 locking nuts
7 connectors, 8 bearing glands
9 slide plates, 10 guide pillars
11 screws, 12 spring chucks
13 mandrels, 14 bearings
15 packing rings, 16 clamp nuts
17 blind holes, 18 through hole I
19 through hole II.
The specific embodiment
Below, in conjunction with the accompanying drawings and embodiments internal expansion type clamping device of the present invention is described further:
As shown in Figure 1, 2, a kind of internal expansion type clamping device comprises main shaft 2 and two tensioner assemblies 1 that are installed on the main shaft 2, and tensioner assembly 1 comprises adjusting nut 4, adjusting seat 5, connector 7, spring chuck 12 and the mandrel 13 that sets gradually around main shaft 2.Wherein, adjusting nut 4 is connected with adjusting seat and is connected with main shaft 2 by screw thread pair, and an end of connector 7 is fixing with adjusting seat 5 by locking nut 6, and the other end adopts screw 11 to be connected with the spring chuck with slide plate 9 to be connected.
Slide plate 9 is annular, the cylindrical that centers on annulus at slide plate 9 is provided with a plurality of through hole I 18, between through hole I 18 and the annulus center of circle, also be provided with through hole II 19, through hole I 18 is used for and connector 7, spring chuck 12 are fixed, one end of through hole II 19 and circular guide pillar 10 closely cooperates, the other end of guide pillar 10 stretches in the blind hole 17 that is arranged at mandrel 13, and can move along the hole, and the degree of depth in hole 17 can make guide pillar 10 stretch into fully; Bearing 14 links together mandrel 13 and main shaft 2 by packing ring 15, clamp nut 16, and spring chuck 12 is cylinders that are enclosed within mandrel 13 outsides, and the external diameter of cylinder is constant, and internal diameter is from left to right by littlely becoming gradually large, forming certain gradient.
The number of guide pillar 10 is two, is positioned at the both sides of main shaft 2, also symmetrical.
The course of work of the present invention:
Before starting working, guide pillar 10 only has the end to be in the hole of mandrel 13, the inclined surface of spring chuck 12 only part matches with the outer surface of mandrel 13, the internal expansion type clamping device is penetrated in the long cylinder of the thin-walled workpiece 3, make two tensioner assemblies 1 be in respectively the two ends of the long cylinder of thin-walled workpiece 3, turn adjusting nut 4 and adjusting seat 5, so that adjusting seat 5 drives connector 7, spring chuck 12 is when rotating around main shaft 2, move right vertically, because an end of guide pillar 10 stretches into the blind hole 17 that is arranged in mandrel 13, and can move along the hole, therefore, mandrel 13 is only followed spring chuck 12 and is moved in a circle under the effect of bearing 15, do not move to right vertically.
Along with vertically to the right propelling of spring chuck 12, the external diameter of spring chuck 12 increases, until tensioner assembly 1 shuts down the long cylinder of thin-walled workpiece 3 tensioners, begins the long cylinder of a thin-walled workpiece 3 is processed.
After the completion of processing, contrary operation takes out workpiece.
The present invention is installed in respectively two tensioner assembly relative directions on the main shaft, relatively move by turning tensioner assembly and main shaft, the tensioner of finishing the long cylinder of thin-walled workpiece with unclamp, realize that clamped one time can be to inner circle, cylindrical and the end face processing of workpiece, improved machining accuracy, guarantee each working position form and position tolerance, had the advantages such as working (machining) efficiency height, precision high conformity, product percent of pass height, low cost of manufacture.
Claims (3)
1. internal expansion type clamping device, comprise main shaft (2) and be installed in two tensioner assemblies (1) on the main shaft (2), it is characterized in that: described tensioner assembly (1) comprises the adjusting nut (4) that sets gradually around main shaft (2), adjusting seat (5), connector (7), spring chuck (12) and mandrel (13), wherein adjusting nut (4) is connected 5 with adjusting seat) be connected with main shaft (2) by screw thread pair, one end of connector (7) is fixing by locking nut (6) and adjusting seat (5), the other end adopts screw (11) to be connected 12 with slide plate (9) with the spring chuck) be connected, on slide plate (9), also be fixed with guide pillar (10), guide pillar (10) stretches in the blind hole (17) that is arranged at mandrel (13), and can be mobile along blind hole (17), bearing (14) is by packing ring (15), clamp nut (16) links together mandrel (13) and main shaft (2), spring chuck (12) is a cylinder that is enclosed within mandrel (13) outside, the external diameter of cylinder is constant, and internal diameter becomes large gradually by little from left to right, form certain gradient.
2. internal expansion type clamping device according to claim 1, it is characterized in that: the number of described guide pillar (10) is two, is positioned at the both sides, and symmetrical of main shaft (2).
3. internal expansion type clamping device according to claim 1 is characterized in that: the degree of depth of the upper blind hole (17) of mandrel (13) can make guide pillar (10) stretch into fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210433608.4A CN102921983B (en) | 2012-11-05 | 2012-11-05 | Internal expanding type clamp device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210433608.4A CN102921983B (en) | 2012-11-05 | 2012-11-05 | Internal expanding type clamp device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102921983A true CN102921983A (en) | 2013-02-13 |
| CN102921983B CN102921983B (en) | 2014-09-24 |
Family
ID=47636988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210433608.4A Active CN102921983B (en) | 2012-11-05 | 2012-11-05 | Internal expanding type clamp device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102921983B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014832A (en) * | 2014-06-04 | 2014-09-03 | 中联重科股份有限公司 | Positioning and expansion device |
| CN104034231A (en) * | 2014-06-10 | 2014-09-10 | 陈恭礼 | Internal expanding positioning detector for besides-star wheel |
| CN107186653A (en) * | 2017-07-31 | 2017-09-22 | 中核(天津)科技发展有限公司 | A kind of multi-point support intracavity tubular elements positioner and localization method |
| CN107202562A (en) * | 2017-07-31 | 2017-09-26 | 中核(天津)科技发展有限公司 | A kind of three coordinate measuring machine positioned based on multi-point support intracavity and measuring method |
| CN107218912A (en) * | 2017-07-31 | 2017-09-29 | 中核(天津)科技发展有限公司 | A kind of three coordinate measuring machine positioned based on expansible support inner chamber formula and measuring method |
| CN107246856A (en) * | 2017-07-31 | 2017-10-13 | 中核(天津)科技发展有限公司 | A kind of expansible support inner chamber formula tubular elements positioner and localization method |
| CN109676171A (en) * | 2019-01-16 | 2019-04-26 | 沈阳飞机工业（集团）有限公司 | Inner hole machinery tensioning device |
| CN112705965A (en) * | 2020-12-31 | 2021-04-27 | 扬州嵘泰精密压铸有限公司 | Machining clamp for thin-wall cylindrical part |
| CN113547143A (en) * | 2020-04-26 | 2021-10-26 | 航天科工惯性技术有限公司 | Thin-wall structural part clamping device |
Citations (6)
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| US3861692A (en) * | 1971-08-20 | 1975-01-21 | Borg Warner Stieber Gmbh | Collet and adjusting screw therefor |
| US4325518A (en) * | 1980-11-06 | 1982-04-20 | Beloit Corporation | Reel spool pneumatic core clamp |
| CN201815694U (en) * | 2010-09-28 | 2011-05-04 | 中国一拖集团有限公司 | End surface positioning expanding mandrel for involute internal spline |
| CN102430773A (en) * | 2011-11-01 | 2012-05-02 | 龙岩理尚精密机械有限公司 | Automatic core fixer for machining sleeve parts |
| CN102485385A (en) * | 2010-12-03 | 2012-06-06 | 山东双轮股份有限公司 | Thin-wall tube body fastening device |
| CN202894387U (en) * | 2012-11-05 | 2013-04-24 | 中核(天津)科技发展有限公司 | Inner-expansion clamping device |
-
2012
- 2012-11-05 CN CN201210433608.4A patent/CN102921983B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861692A (en) * | 1971-08-20 | 1975-01-21 | Borg Warner Stieber Gmbh | Collet and adjusting screw therefor |
| US4325518A (en) * | 1980-11-06 | 1982-04-20 | Beloit Corporation | Reel spool pneumatic core clamp |
| CN201815694U (en) * | 2010-09-28 | 2011-05-04 | 中国一拖集团有限公司 | End surface positioning expanding mandrel for involute internal spline |
| CN102485385A (en) * | 2010-12-03 | 2012-06-06 | 山东双轮股份有限公司 | Thin-wall tube body fastening device |
| CN102430773A (en) * | 2011-11-01 | 2012-05-02 | 龙岩理尚精密机械有限公司 | Automatic core fixer for machining sleeve parts |
| CN202894387U (en) * | 2012-11-05 | 2013-04-24 | 中核(天津)科技发展有限公司 | Inner-expansion clamping device |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014832A (en) * | 2014-06-04 | 2014-09-03 | 中联重科股份有限公司 | Positioning and expansion device |
| CN104034231A (en) * | 2014-06-10 | 2014-09-10 | 陈恭礼 | Internal expanding positioning detector for besides-star wheel |
| CN107202562B (en) * | 2017-07-31 | 2021-05-04 | 中核(天津)科技发展有限公司 | Three-coordinate measuring machine and measuring method based on multi-point support intracavity type positioning |
| CN107202562A (en) * | 2017-07-31 | 2017-09-26 | 中核(天津)科技发展有限公司 | A kind of three coordinate measuring machine positioned based on multi-point support intracavity and measuring method |
| CN107218912A (en) * | 2017-07-31 | 2017-09-29 | 中核(天津)科技发展有限公司 | A kind of three coordinate measuring machine positioned based on expansible support inner chamber formula and measuring method |
| CN107246856A (en) * | 2017-07-31 | 2017-10-13 | 中核(天津)科技发展有限公司 | A kind of expansible support inner chamber formula tubular elements positioner and localization method |
| CN107246856B (en) * | 2017-07-31 | 2021-05-04 | 中核(天津)科技发展有限公司 | Positioning device and positioning method for expandable support inner cavity type cylindrical part |
| CN107186653A (en) * | 2017-07-31 | 2017-09-22 | 中核(天津)科技发展有限公司 | A kind of multi-point support intracavity tubular elements positioner and localization method |
| CN107186653B (en) * | 2017-07-31 | 2021-05-04 | 中核(天津)科技发展有限公司 | Multi-point support inner cavity type cylindrical part positioning device and positioning method |
| CN107218912B (en) * | 2017-07-31 | 2021-05-04 | 中核(天津)科技发展有限公司 | Three-coordinate measuring machine and measuring method based on expandable support intracavity type positioning |
| CN109676171A (en) * | 2019-01-16 | 2019-04-26 | 沈阳飞机工业（集团）有限公司 | Inner hole machinery tensioning device |
| CN109676171B (en) * | 2019-01-16 | 2024-01-23 | 沈阳飞机工业（集团）有限公司 | Inner hole mechanical tensioning device |
| CN113547143A (en) * | 2020-04-26 | 2021-10-26 | 航天科工惯性技术有限公司 | Thin-wall structural part clamping device |
| CN113547143B (en) * | 2020-04-26 | 2024-05-10 | 航天科工惯性技术有限公司 | Thin-wall structural member clamping device |
| CN112705965A (en) * | 2020-12-31 | 2021-04-27 | 扬州嵘泰精密压铸有限公司 | Machining clamp for thin-wall cylindrical part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102921983B (en) | 2014-09-24 |
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