CN202377807U - Precision concentric clamping device - Google Patents
Precision concentric clamping device Download PDFInfo
- Publication number
- CN202377807U CN202377807U CN2011205576673U CN201120557667U CN202377807U CN 202377807 U CN202377807 U CN 202377807U CN 2011205576673 U CN2011205576673 U CN 2011205576673U CN 201120557667 U CN201120557667 U CN 201120557667U CN 202377807 U CN202377807 U CN 202377807U
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- China
- Prior art keywords
- elastic flange
- clamping device
- petal
- paw
- precision
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- Expired - Lifetime
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Abstract
The utility model discloses a precision concentric clamping device which comprises a clamp frame, an air cylinder arranged in the clamp frame, an elastic flange connected with the air cylinder and arranged above the clamp frame, and an eight-petal paw connected with the elastic flange, wherein the air cylinder, the elastic flange and the eight-petal paw are sequentially connected with one another from the bottom to the top, and the central shafts of the air cylinder, the elastic flange and the eight-petal paw are overlapped with one another. The precision concentric clamping device provided by the utility model drives the eight-petal paw to clamp a workpiece due to the fine deformation of the elastic flange, and has the advantages of being high in positioning precision and free from the deformation of the workpiece when a thin-wall part is clamped, and only the eight-petal paw needs to be changed when products with different diameters need to be changed, so that not only can the time be saved, but also the production cost is lower.
Description
Technical field
The utility model relates to the concentric clamping device of a kind of precision.
Background technology
Require increasingly high to machining accuracy now; From before ± 0.01mm till now ± 0.005mm even higher; Therefore, when mechanical hardware products fine finishining,, generally can there be in the later process the how accurately problem of positioning clamping of workpiece for the circular product that needs multiple operation processing.On numerical control machining center, using at present many is positioning clamping modes such as elastic collet chuck location, scroll chuck location or flat-nose pliers location; If workpiece external diameter or internal diameter are fluctuating in certain margin of tolerance, axially and radially exist after work piece positioning is tight than mistake and accurate positioning clamping.Wherein, the elastic collet chuck method of clamping causes error in short transverse accordingly along with the change of clamping diameter; Scroll chuck then because itself be to adopt the mode of gear to locate and clamp, can't be accomplished high orientation precision; During the circular product of flat-nose pliers positioning clamping, can cause radial location generation error because of the product vary in diameter.
The utility model content
For solving the problems of the technologies described above, the utility model provides a kind of precision concentric clamping device, to improve the clamping precision, avoids producing concentric deviation.
For achieving the above object, the technical scheme of the utility model is following:
The concentric clamping device of a kind of precision; Comprise fixture stand; Be installed in the inner cylinder of said fixture stand; The elastic flange that is connected and is installed in said fixture stand top with said cylinder, and eight claws that are connected with said elastic flange, said cylinder, elastic flange and eight claws connect successively from the bottom to top and central shaft overlaps.
Preferably, said cylinder is connected through connecting rod with elastic flange.
Preferably, the central shaft of said connecting rod overlaps with the central shaft of said elastic flange.
Pass through technique scheme; The accurate clamping device with one heart that the utility model provides is that the trickle distortion through elastic flange drives eight claw clamping work pieces; Has the advantage that positioning accuracy height, clamping thin-walled parts can not cause workpiece deformation; And only need change eight claws when changing the different-diameter size product and get final product, not only save time and production cost lower.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below.
Fig. 1 is the structural representation of the concentric clamping device of the disclosed a kind of precision of embodiment;
Fig. 2 is the schematic top plan view of elastic flange among Fig. 1;
The strain sketch map of elastic flange and eight claws when Fig. 3 is clamping work pieces.
11. fixture stand 12. cylinders 13. elastic flanges
14. eight claws, 15. workpiece, 16. connecting rods
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment will be carried out clear, intactly description.
According to Fig. 1 and 2; The accurate clamping device with one heart that the utility model provides comprises fixture stand 11, is installed in the cylinder 12 of fixture stand 11 inside; The elastic flange 13 that is connected and is installed in fixture stand 11 tops with cylinder 12; And eight claws 14 that are connected with elastic flange 13, cylinder 12, elastic flange 13 and eight claws 14 connect successively from the bottom to top and central shaft overlaps, wherein; Cylinder 12 is connected through connecting rod 16 with elastic flange 13, and the central shaft of connecting rod 16 overlaps with the central shaft of elastic flange 13.
The accurate operation principle of clamping device with one heart that the utility model provides is: cylinder 12 ventilation backs drive connecting rod 16; Connecting rod 16 rising jack-up elastic flanges 13; The little distortion of elastic flange 13 stressed back materials, thus elastic flange 13 centres eight lobes protruding and that drive eight claws 14 expand outwardly and clamping work pieces 15; 12 exhausts of workpiece 15 process finishing exhaust hoods, eight lobe retracted for clearance of elastic flange 13 resiliences and eight claws 14, eight claws 14 unclamp workpiece 15.
Because being the trickle distortion through elastic flange 13, this utility model drives eight claws, 14 clamping work pieces 15; The clamping diameter variation can not influence axially (short transverse) and the radially positioning accuracy of (horizontal direction); Has the advantage that positioning accuracy height, clamping thin-walled parts can not cause workpiece deformation; And only need change eight claws 14 when changing the different-diameter size product and get final product, not only save time and production cost lower.In addition, the utility model provides power with cylinder 12, can change cylinder 12 into oil cylinder as required in actual the use, and bigger chucking power is provided; Can certainly substitute cylinder 12 with screw rod, this is not limited.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (3)
1. concentric clamping device of precision; It is characterized in that; Comprise fixture stand, be installed in the inner cylinder of said fixture stand, be connected and be installed in the elastic flange of said fixture stand top with said cylinder; And eight claws that are connected with said elastic flange, said cylinder, elastic flange and eight claws connect successively from the bottom to top and central shaft overlaps.
2. the concentric clamping device of a kind of precision according to claim 1 is characterized in that said cylinder is connected through connecting rod with elastic flange.
3. the concentric clamping device of a kind of precision according to claim 2 is characterized in that the central shaft of said connecting rod overlaps with the central shaft of said elastic flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205576673U CN202377807U (en) | 2011-12-28 | 2011-12-28 | Precision concentric clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205576673U CN202377807U (en) | 2011-12-28 | 2011-12-28 | Precision concentric clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202377807U true CN202377807U (en) | 2012-08-15 |
Family
ID=46626325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205576673U Expired - Lifetime CN202377807U (en) | 2011-12-28 | 2011-12-28 | Precision concentric clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202377807U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106541155A (en) * | 2017-01-10 | 2017-03-29 | 苏州迈特科技有限公司 | A kind of suitable high speed rotates the main shaft grasping system of turning |
| CN113953863A (en) * | 2021-11-12 | 2022-01-21 | 中国航发沈阳黎明航空发动机有限责任公司 | Design structure of quick change frock of family part |
-
2011
- 2011-12-28 CN CN2011205576673U patent/CN202377807U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106541155A (en) * | 2017-01-10 | 2017-03-29 | 苏州迈特科技有限公司 | A kind of suitable high speed rotates the main shaft grasping system of turning |
| CN113953863A (en) * | 2021-11-12 | 2022-01-21 | 中国航发沈阳黎明航空发动机有限责任公司 | Design structure of quick change frock of family part |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |