CN102950554B - Clamping device - Google Patents
Clamping device Download PDFInfo
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- CN102950554B CN102950554B CN201210490077.2A CN201210490077A CN102950554B CN 102950554 B CN102950554 B CN 102950554B CN 201210490077 A CN201210490077 A CN 201210490077A CN 102950554 B CN102950554 B CN 102950554B
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- snap ring
- matrix
- clamping device
- cylinder
- piston
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Abstract
The invention relates to a clamping device. The clamping device comprises a cylindrical basal body of which the axis is extended along the front and back direction; wherein a clamping part for clamping a workpiece is arranged at the outer circumferential surface of the basal body; an upper snap ring and a lower snap ring are arranged at the outside of the basal body along the vertical direction; an air cylinder for driving the upper snap ring and the lower snap ring to relatively move is arranged inside the basal body; a piston for dividing the air cylinder into a rod chamber and a rodless chamber is movably arranged in an air cylinder chamber along the vertical direction; a piston rod connected with the upper end face of the piston is arranged in the rod chamber of the air cylinder; the piston rod is in guide match with the basal body and is fixedly connected with the upper snap ring; and the air cylinder is in guide match with the basal body by a connection structure and is fixedly connected with the lower snap ring. The clamping device is suitable for the clamping and accurate positioning of a cylinder workpiece, simple and convenient to operate, and accurate in positioning; and the clamping force is controllable.
Description
Technical field
The present invention relates to a kind of clamping device.
Background technology
Workpiece is being processed or all needed to adopt fixture by its clamping and positioning during dismounting at present, in existing clamping device, vice or other clamping devices of adopting clamp more, the most employing of these fixtures regulates workpiece is clamped manually, generally clamps by rule of thumb, and clamping force is uncontrollable.
Application publication number is that the Chinese patent application " cylinder type clamping device " of CN 102179788A discloses a kind of clamping device that adopts air cylinder driven to clamp workpiece.Comprise the fixed block being arranged on base, the clamping being fixedly connected with cylinder by push rod is slided, during use, workpiece to be clamped is positioned between fixed block and grip slide, and grip slide moves to fixed block under the promotion of cylinder, by Workpiece clamping between fixed block and grip slide, adopt cylinder to clamp driving, clamping force is controlled, reliable clamping, and precision is high.But this clamping device location is unreliable, especially for cylindrical workpiece, when carrying out the position that accurate location needs to adjust this clamping device to workpiece, operate comparatively loaded down with trivial details, inefficiency.
Summary of the invention
The object of this invention is to provide a kind of clamping device to cylindrical workpiece registration.
For addressing the above problem, the technical solution used in the present invention is:
A kind of clamping device, comprise the cylindrical base that axis extends along fore-and-aft direction, matrix outer circumference surface is provided with the clamping part for holding workpiece, matrix outside is provided with snap ring and lower snap ring along the vertical direction, in described matrix, be provided with for driving upper snap ring and the lower snap ring cylinder of relative motion along the vertical direction, in described cylinder chamber, guiding movement is equipped with the piston that cylinder is divided into rod chamber and rodless cavity along the vertical direction, in described cylinder rod chamber, be provided with the piston rod being connected with piston upper surface, piston rod coordinates and is fixedly connected with upper snap ring with matrix guiding, cylinder is coordinated and is fixedly connected with lower snap ring with matrix guiding by syndeton.
Described piston rod is provided with the clamping air admission hole communicating with described rod chamber, and described syndeton offers the air admission hole that loosens communicating with described rodless cavity.
Described syndeton be upper end be positioned at cylinder chamber and be fixedly connected with rodless cavity, push rod that lower end and matrix guiding coordinates and is fixedly connected with lower snap ring.
Between described piston and cylinder wall, be provided with the first sealing ring.
Between described push rod and cylinder wall, be provided with the second sealing ring.
Described matrix outer peripheral face offers keeps supplying snap ring and the lower snap ring draw-in groove of guiding movement along the vertical direction, in described draw-in groove, is provided with rubber ring.
The circumferential wall that is positioned at described clamping part on described matrix is provided with the alignment pin for workpiece is positioned.
Circumferential wall in the rear end away from clamping part on described matrix is provided with for hard-wired installing hole.
The invention has the beneficial effects as follows: a kind of clamping device, cylindrical workpiece is set in to matrix and upper, on the face of cylinder between lower snap ring, workpiece is positioned over, between lower snap ring and matrix, make piston motion, piston driving piston rod movement, piston rod is fixedly connected with upper snap ring, therefore piston rod drives upper snap ring to move along matrix radially-directed, cylinder lower end and lower snap ring are fixed, therefore cylinder drives lower snap ring to move along matrix radially-directed, make snap ring and lower snap ring generation relative motion, thereby the cylindrical workpiece between upper and lower snap ring and matrix is clamped.The present invention adopts air cylinder driven to clamp, and clamping force is controlled, and reliable clamping adopts arc surface to carry out clamping and positioning, registration to cylindrical workpiece.
Further, piston rod is provided with the clamping air admission hole communicating with the rod chamber on piston top, and syndeton is provided with the air admission hole that loosens communicating with the rodless cavity of piston bottom, adopts from different pore air inlets and realizes the clamping of workpiece and unclamp, simple to operate.
Further, in draw-in groove, be provided with rubber ring, when clamping, can play cushioning effect, extension fixture service life.
Further, on the periphery of the clamping part of matrix, be provided with alignment pin, can further to cylindrical workpiece, accurately locate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the cutaway view of Fig. 1;
Fig. 3 is the clamped condition figure of Fig. 1;
Fig. 4 is the releasing orientation figure of Fig. 1.
The specific embodiment
Embodiments of the invention, as shown in Fig. 1～4, are elaborated to the present embodiment below in conjunction with accompanying drawing:
A kind of clamping device, comprise the cylindrical base 1 that axis extends along fore-and-aft direction, matrix 1 fore end outer circumference face is for clamping the clamping part of cylindrical workpiece, the periphery of clamping part is provided with for carry out accurately installing the alignment pin 8 of location to being held workpiece, matrix 1 rear end has installs fixing installing hole 14 to this clamping device, matrix 1 outer circumference surface offers draw-in groove, matrix 1 radially offers pilot hole in position opposing upper and lower along it, on matrix 1 outer peripheral face, lower corresponding position is provided with upper snap ring 2 and the lower snap ring 3 that can move along draw-in groove, on, between lower snap ring and draw-in groove wall, be provided with rubber ring 10, the maximum chord length of upper snap ring 2 and lower snap ring 3 is all less than the diameter of matrix 1, upper snap ring 2 offers snap ring connecting hole with the pilot hole opposite position that matrix 1 top is offered, lower snap ring 3 offers lower snap ring connecting hole with the pilot hole opposite position that matrix 1 bottom is offered, matrix 1 is provided with and drives upper snap ring and the lower snap ring cylinder 6 of relative motion along the vertical direction, in cylinder 6, guiding movement is equipped with piston 4 along the vertical direction, piston 4 is separated into rod chamber and rodless cavity by cylinder chamber, piston rod 42 is positioned at rod chamber, and be connected with piston 4 upper surfaces, piston rod 42 coordinates and is threaded with upper snap ring connecting hole with the pilot hole guiding on matrix 1 top, adopt upper locking nut 71 lockings, piston rod center offers piston centre porosity 41, piston rod 42 offers radially pore 43 in piston 4 upper end surfaces, piston centre porosity 41 one end are connected with air feed equipment in use, piston centre porosity 41 and radially pore 43 form clamping air admission holes, clamping air admission hole is communicated with rod chamber, piston 4 adopts the first sealing ring 131 sealings with cylinder wall, piston rod 42 is provided with upper gasket 11 with matrix 1 inner peripheral surface contact position, in rodless cavity, by screw 9, be connected with push rod 5, push rod 5 upper ends are positioned at rodless cavity and adopt the second sealing ring 132 to be sealed and matched with cylinder wall, the second sealing ring 132 is positioned at screw 9 tops, push rod 5 lower ends pass from cylinder 6 bottoms, and coordinate with the pilot hole guiding of matrix 1 bottom, push rod 5 is threaded and locks by lower locking nut 72 with lower snap ring 3, push rod 5 centers are provided with loosens air admission hole 51, loosening air admission hole 51 one end is connected with air feed equipment in use, the other end is communicated with rodless cavity, and push rod 5 is provided with lower gasket 12 with matrix 1 inner peripheral surface contact position.
When needs clamp workpiece, workpiece be will be held and matrix 1 outer peripheral face and upper snap ring will be sleeved on, clamping part between lower snap ring, pressed gas enters from the piston centre porosity 41 of piston rod 42, and enter in cylinder chamber by pore 43 radially, because pore 43 is radially positioned at piston 4 upper surfaces, therefore gas enters in the rod chamber on piston 4 tops, along with promoting piston 4, entering of pressed gas move downward, because the piston rod 42 on piston 4 links together with upper snap ring 2, therefore piston rod 42 drives upper snap ring 2 to move downward, simultaneously, cylinder 6 moves upward, because cylinder 6 and push rod 5 link together, therefore drive push rod 5 to move upward, push rod 5 drives the lower snap ring 3 being attached thereto together to move upward, the arc surface jam-packed of upper snap ring 2 and lower snap ring 3 is enclosed within on the face of cylinder of workpiece of matrix 1 clamping part, cylindrical workpiece is by upper, lower snap ring clamps, as shown in Figure 3.
When needs unclamp workpiece, the air admission hole 51 that loosens on pressed gas and push rod 5 is connected, make pressed gas from loosening air admission hole 51, pass in the rodless cavity of piston 4 bottoms, along with promoting piston 4, entering of pressed gas move upward, because piston rod 42 is connected with upper snap ring 2, therefore piston rod 42 drives upper snap ring 2 to move up, upper snap ring 2 opens and leaves the periphery of matrix clamping part, simultaneously, cylinder 6 moves downward together with push rod 5, drive the lower snap ring 3 being threaded with push rod 5 to move down, lower snap ring 3 also opens and leaves the periphery of matrix clamping part, on, lower snap ring unclamps clamping, device is in releasing orientation, cylindrical workpiece can from matrix with, between lower snap ring, take out, as shown in Figure 4, the present invention is by controlling the conversion of air inlet, can realize the Quick-clamped of cylindrical workpiece or unclamp, simple to operation.
Claims (8)
1. a clamping device, it is characterized in that: comprise the cylindrical base that axis extends along fore-and-aft direction, matrix outer circumference surface is provided with the clamping part for holding workpiece, matrix outside is provided with snap ring and lower snap ring along the vertical direction, in described matrix, be provided with for driving upper snap ring and the lower snap ring cylinder of relative motion along the vertical direction, in described cylinder chamber, guiding movement is equipped with the piston that cylinder is divided into rod chamber and rodless cavity along the vertical direction, in described cylinder rod chamber, be provided with the piston rod being connected with piston upper surface, piston rod coordinates and is fixedly connected with upper snap ring with matrix guiding, cylinder is coordinated and is fixedly connected with and drives lower snap ring to move along matrix radially-directed with lower snap ring with matrix guiding by syndeton.
2. clamping device according to claim 1, is characterized in that: described piston rod is provided with the clamping air admission hole communicating with described rod chamber, and described syndeton offers the air admission hole that loosens communicating with described rodless cavity.
3. clamping device according to claim 1 and 2, is characterized in that: described syndeton be upper end be positioned at cylinder chamber and be fixedly connected with rodless cavity, push rod that lower end coordinates and is fixedly connected with lower snap ring with matrix guiding.
4. clamping device according to claim 3, is characterized in that: between described piston and cylinder wall, be provided with the first sealing ring.
5. clamping device according to claim 3, is characterized in that: between described push rod and cylinder wall, be provided with the second sealing ring.
6. clamping device according to claim 3, is characterized in that: described matrix outer circumference surface offers keeps supplying snap ring and the lower snap ring draw-in groove of guiding movement along the vertical direction, in described draw-in groove, is provided with rubber ring.
7. clamping device according to claim 3, is characterized in that: the circumferential wall that is positioned at described clamping part on described matrix is provided with the alignment pin for workpiece is positioned.
8. clamping device according to claim 3, is characterized in that: the circumferential wall in the rear end away from clamping part on described matrix is provided with for hard-wired installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210490077.2A CN102950554B (en) | 2012-11-27 | 2012-11-27 | Clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210490077.2A CN102950554B (en) | 2012-11-27 | 2012-11-27 | Clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102950554A CN102950554A (en) | 2013-03-06 |
| CN102950554B true CN102950554B (en) | 2014-10-22 |
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ID=47760247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210490077.2A Active CN102950554B (en) | 2012-11-27 | 2012-11-27 | Clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102950554B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106217285B (en) * | 2016-08-29 | 2018-01-19 | 天津七一二通信广播股份有限公司 | A kind of mechanical device and application method applied to circular product clamping |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5447857A (en) * | 1977-09-22 | 1979-04-14 | Yokogawa Bridge Works | Method of making steel cylinder from steel plate |
| JPH0542393A (en) * | 1991-08-12 | 1993-02-23 | Mitsubishi Electric Corp | Body pipe joining welding deformation preventing device |
| US6862957B2 (en) * | 2003-01-29 | 2005-03-08 | Yu-Yen Wu Wang | Combination tool for assembling and dismantling a lock nut of a bearing of wheel axle of a wheeled vehicle |
| JP2007054914A (en) * | 2005-08-24 | 2007-03-08 | Mitsui High Tec Inc | Handling tool |
| CN101433969A (en) * | 2008-12-11 | 2009-05-20 | 广州市敏嘉制造技术有限公司 | Apparatus for locking accurate main shaft |
| CN201970227U (en) * | 2011-02-14 | 2011-09-14 | 淮安市专用汽车制造有限公司 | Supporting clamp for correcting circular barrel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8550326B2 (en) * | 2005-10-05 | 2013-10-08 | Megastir Technologies Llc | Expandable mandrel for use in friction stir welding |
-
2012
- 2012-11-27 CN CN201210490077.2A patent/CN102950554B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5447857A (en) * | 1977-09-22 | 1979-04-14 | Yokogawa Bridge Works | Method of making steel cylinder from steel plate |
| JPH0542393A (en) * | 1991-08-12 | 1993-02-23 | Mitsubishi Electric Corp | Body pipe joining welding deformation preventing device |
| US6862957B2 (en) * | 2003-01-29 | 2005-03-08 | Yu-Yen Wu Wang | Combination tool for assembling and dismantling a lock nut of a bearing of wheel axle of a wheeled vehicle |
| JP2007054914A (en) * | 2005-08-24 | 2007-03-08 | Mitsui High Tec Inc | Handling tool |
| CN101433969A (en) * | 2008-12-11 | 2009-05-20 | 广州市敏嘉制造技术有限公司 | Apparatus for locking accurate main shaft |
| CN201970227U (en) * | 2011-02-14 | 2011-09-14 | 淮安市专用汽车制造有限公司 | Supporting clamp for correcting circular barrel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102950554A (en) | 2013-03-06 |
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