CN112658748A - Flexible device for clamping special-shaped thin-wall parts - Google Patents
Flexible device for clamping special-shaped thin-wall parts Download PDFInfo
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- CN112658748A CN112658748A CN202011313671.5A CN202011313671A CN112658748A CN 112658748 A CN112658748 A CN 112658748A CN 202011313671 A CN202011313671 A CN 202011313671A CN 112658748 A CN112658748 A CN 112658748A
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Abstract
The invention discloses a flexible device for clamping special-shaped thin-wall parts, and belongs to the technical field of machine tool clamp design. The flexible device comprises a clamp body, a foundation plate and magnetorheological fluid, wherein the foundation plate is connected with a machine tool workbench through the clamp body; the clamp body comprises a bottom plate and surrounding coamings; the open cavity formed by the bottom plate and the surrounding enclosing plates is used for storing the magnetorheological fluid; the side surface of the surrounding enclosing plate is provided with a threaded through hole, and the pipe joint is fixedly connected with the surrounding enclosing plate through threads; a plurality of rectangular grooves are formed in the side face of the surrounding enclosing plate, and coils are wound in the rectangular grooves respectively. The flexible device for clamping the special-shaped thin-wall parts completely envelops the appearance or the inner cavity of the parts by utilizing the free flowability of the magnetorheological fluid under a zero magnetic field, and then the magnetorheological fluid is converted into a high-viscosity solid state under a strong magnetic field, so that the stable and firm clamping of the parts is realized; the clamping deformation of the thin-wall part is avoided.
Description
Technical Field
The invention relates to the technical field of machine tool fixture design, in particular to a flexible device for clamping special-shaped thin-wall parts.
Background
With the development of mechanical products towards light weight, complexity and integration and good man-machine interaction, parts of the products adopt a special-shaped irregular structure design concept increasingly and are thin-wall structural members. The machining center and other equipment are mostly adopted for cutting machining of the parts during production and machining, and the parts must be stably, firmly and accurately clamped on a machine tool workbench for ensuring the machining quality and machining consistency of the parts during cutting machining. However, the machine tool table is generally of a standard structure, does not have good flexibility, cannot directly clamp a part, and needs to introduce an intermediate connecting device to ensure that the relative position of the machine tool table and the part is fixed.
The fixture is used as an intermediate device for connecting the machine tool workbench and the part, generally comprises a standard interface connected with the machine tool workbench and a special interface connected with the part, and is fixedly connected with the machine tool workbench through the standard interface and fixedly connected with the part through the special interface when in use, namely, the stable, firm and accurate clamping of the part on the machine tool workbench is indirectly realized. Because the parts of different products have different shapes and specifications, the corresponding clamp needs to be matched with a corresponding interface. The clamp is mostly made of rigid solid materials, and often one clamp can only correspond to one part and does not have clamping flexibility; and a certain clamping force is often required to be applied to the part to ensure the part to be stably and firmly clamped, so that the part with a thin-wall structure is easy to deform, and the processing quality is influenced.
Disclosure of Invention
The invention aims to provide a flexible device for clamping special-shaped thin-wall parts, and aims to solve the problems that the existing machine tool clamp does not have clamping flexibility in clamping special-shaped thin-wall structural parts, and the parts are easy to deform to influence the processing quality.
In order to solve the technical problem, the invention provides a flexible device for clamping a special-shaped thin-wall part, which comprises a clamp body, a foundation plate and magnetorheological fluid, wherein the foundation plate is connected with a machine tool workbench through the clamp body;
the clamp body comprises a bottom plate and surrounding coamings, and the bottom plate and the surrounding coamings are of an integral structure;
the open cavity formed by the bottom plate and the surrounding enclosing plates is used for storing the magnetorheological fluid;
the side surface of the surrounding enclosing plate is provided with a threaded through hole, and the pipe joint is fixedly connected with the surrounding enclosing plate through threads;
a plurality of rectangular grooves are formed in the side face of the surrounding enclosing plate, and coils are wound in the rectangular grooves respectively.
Optionally, the two sides of the bottom plate are respectively provided with a kidney-shaped groove, and the bottom plate is fixedly connected with the machine tool workbench through a T-shaped bolt or a screw rod.
Optionally, the base plate is provided with a plurality of T-shaped grooves, positioning holes and threaded blind holes, which are respectively used for connecting a standard fastening piece, a positioning piece, a guide piece and a support piece.
Optionally, the base plate is provided with a positioning pin for positioning the special-shaped thin-wall part.
Optionally, the foundation plate is connected with a positioning plate through a set screw in a sliding manner, and the positioning plate is used for supporting and positioning the special-shaped thin-wall part.
Optionally, a through hole is formed in the middle of the pipe joint and communicated with an open cavity formed by the bottom plate and the surrounding enclosing plates; the outer circumference of the pipe joint is provided with threads for connecting a hose for guiding the magnetorheological fluid.
Optionally, a sealing plug is tightly fitted to one side of the pipe joint, which is far away from the clamp body, and the sealing plug is in interference fit with the through hole.
The invention provides a flexible device for clamping special-shaped thin-wall parts, which comprises a clamp body, a foundation plate and magnetorheological fluid, wherein the foundation plate is connected with a machine tool workbench through the clamp body; the clamp body comprises a bottom plate and surrounding coamings, and the bottom plate and the surrounding coamings are of an integral structure; the open cavity formed by the bottom plate and the surrounding enclosing plates is used for storing the magnetorheological fluid; the side surface of the surrounding enclosing plate is provided with a threaded through hole, and the pipe joint is fixedly connected with the surrounding enclosing plate through threads; a plurality of rectangular grooves are formed in the side face of the surrounding enclosing plate, and coils are wound in the rectangular grooves respectively. The flexible device for clamping the special-shaped thin-wall parts completely envelops the appearance or the inner cavity of the parts by utilizing the free flowability of the magnetorheological fluid under a zero magnetic field, and then the magnetorheological fluid is converted into a high-viscosity solid state under a strong magnetic field, so that the stable and firm clamping of the parts is realized; meanwhile, when the magnetorheological fluid flows, the volume of the magnetorheological fluid does not change obviously, namely, the magnetorheological fluid does not generate clamping force on the part, but carries out profile modeling nested clamping instead of force application clamping, so that the clamping deformation of the thin-wall part is avoided.
Drawings
FIG. 1 is a top view of a flexible device for clamping a special-shaped thin-wall part provided by the invention;
FIG. 2 is a left side view of a flexible device for clamping a special-shaped thin-wall part provided by the invention;
FIG. 3 is a sectional view of a flexible device for clamping a special-shaped thin-wall part provided by the invention.
Detailed Description
The following describes in detail a flexible device for clamping a special-shaped thin-wall part according to the present invention with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Example one
The invention provides a flexible device for clamping special-shaped thin-wall parts, which comprises a clamp body 1, a base plate 2 and magnetorheological fluid 10, wherein the base plate 2 is connected with a machine tool workbench through the clamp body 1; the clamp body 1 comprises a bottom plate 1f and surrounding enclosing plates 1g, and the bottom plate 1f and the surrounding enclosing plates are of an integral structure; the open cavity formed by the bottom plate 1f and the surrounding enclosing plates 1g is used for storing the magnetorheological fluid 10; the side surface of the surrounding enclosing plate 1g is provided with a threaded through hole, and the pipe joint 3 is fixedly connected with the surrounding enclosing plate 1g through threads; a plurality of rectangular grooves are formed in the side face of the surrounding enclosing plate 1g, and coils are wound in the rectangular grooves respectively; the rectangular grooves surround the peripheral enclosing plate 1g and are uniformly distributed in the vertical direction, and are sequentially a first rectangular groove 1a, a second rectangular groove 1b, a third rectangular groove 1c, a fourth rectangular groove 1d and a fifth rectangular groove 1e, and a first coil 5a, a second coil 5b, a third coil 5c, a fourth coil 5d and a fifth coil 5e (the first coil 5a, the second coil 5b, the third coil 5c, the fourth coil 5d and the fifth coil 5e form a coil group 5) are respectively wound on the first rectangular groove 1a, the second rectangular groove 1b, the third rectangular groove 1c, the fourth rectangular groove 1d and the fifth rectangular groove 1e, as shown in fig. 2 and 3.
Specifically, please continue to refer to fig. 1, two sides of the bottom plate 1f are respectively provided with a kidney-shaped groove 1k, and the bottom plate 1f is fixedly connected with a machine tool workbench through a T-shaped bolt or a screw rod; the foundation plate 2 is provided with a plurality of T-shaped grooves 1h, positioning holes 1i and threaded blind holes 1j which are respectively used for connecting a standard fastening piece, a positioning piece, a guide piece and a supporting piece so as to realize accurate positioning of the special-shaped thin-wall parts on the foundation plate 2; be equipped with locating pin 6 on the foundatin plate 2 for just fix a position dysmorphism thin wall part 7, there is locating plate 8 through holding screw 9 sliding connection on the foundatin plate 2 for support location dysmorphism thin wall part 7.
Specifically, as shown in fig. 3, a through hole 3a is formed in the middle of the pipe joint 3 and is communicated with an open cavity formed by the bottom plate 1f and the surrounding enclosing plates 1 g; the outer circumference of the pipe joint 3 is provided with a thread 3b for connecting a hose for guiding the magnetorheological fluid 10; and a sealing plug 4 is tightly matched with one side of the pipe joint 3, which is far away from the clamp body 1, and the sealing plug 4 is in interference fit with the through hole 3 a.
Specifically, referring to fig. 1 to 3, the magnetorheological fluid 10 stored in the fixture body 1 is used as a clamping body, and various fastening members, positioning members, guiding members, supporting members and other combined elements mounted on the foundation plate 2 are used as positioning bodies, so as to clamp the special-shaped thin-walled parts. Aiming at the special-shaped thin-wall parts with different structures, the positioning bodies are only required to be correspondingly combined and built, the clamping bodies are generated by utilizing the free flowing filling characteristic of the magnetorheological fluid 10, the specific design is not required, only the liquid level height of the magnetorheological fluid 10 is required to be ensured, and the magnetorheological fluid 10 is caused to flow after the coil groups 5 are electrified, so that the special-shaped thin-wall parts can be flexibly clamped. The specific working process is as follows:
firstly, a T-shaped bolt or a screw rod penetrates through the kidney-shaped groove 1k to fix the clamp body 1 on a machine tool workbench; fixing the foundation plate 2 in the clamp body 1 through bolts; screwing the sealing plug 4 into the through hole 3a of the pipe joint 3 to plug the cavity of the clamping body 1; secondly, according to the processing requirements of the special-shaped thin-walled part to be processed, the foundation plate 2 is combined and built with the T-shaped groove 1h, the positioning hole 1i and the threaded blind hole 1j to position the special-shaped thin-walled part; then, injecting a proper amount of the magnetorheological fluid 10 into the cavity of the clamping body 1, ensuring that part of the special-shaped thin-walled part is partially immersed in the magnetorheological fluid 10, electrifying the coil group 5, selecting one or more coils of the coils 5 a-5 e to be electrified and setting a proper current according to the requirement on the clamping force and the height of the liquid level of the magnetorheological fluid 10 in the machining process, generating a strong magnetic field in the cavity of the clamping body 1, converting the magnetorheological fluid 10 from a low-viscosity and high-flow liquid state into a high-viscosity and low-flow solid state, clamping the special-shaped thin-walled part, and machining the special-shaped thin-walled part by keeping the state; and finally, after the machining is finished, the residual cutting scraps and cutting fluid in the cavity are removed, the coil group 5 is subjected to power-off treatment, no magnetic field exists in the cavity of the clamping body 1, the magnetorheological fluid 10 is recovered to a low-viscosity and high-flow liquid state, the sealing plug 4 is screwed out, and the magnetorheological fluid 10 is discharged from the cavity of the clamping body 1.
The embodiment is only an optimal special-shaped thin-wall part with structural characteristics, and when the special-shaped thin-wall part with structural characteristics is replaced by the special-shaped thin-wall part with other structural characteristics, the special-shaped thin-wall part can be stably, firmly and accurately clamped on a machine tool workbench only by recombining and constructing the positioning body consisting of the positioning pin 6, the positioning plate 8 and the set screw 9 without other changes.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (7)
1. The flexible device for clamping the special-shaped thin-wall parts is characterized by comprising a clamp body (1), a foundation plate (2) and magnetorheological fluid (10), wherein the foundation plate (2) is connected with a machine tool workbench through the clamp body (1);
the clamp body (1) comprises a bottom plate (1 f) and surrounding coamings (1 g), and the bottom plate (1 f) and the surrounding coamings are of an integral structure;
the open cavity formed by the bottom plate (1 f) and the surrounding enclosing plates (1 g) is used for storing the magnetorheological fluid (10);
the side surface of the surrounding enclosing plate (1 g) is provided with a threaded through hole, and the pipe joint (3) is fixedly connected with the surrounding enclosing plate (1 g) through threads;
a plurality of rectangular grooves are formed in the side face of the surrounding enclosing plate (1 g), and coils are wound in the rectangular grooves respectively.
2. The flexible device for clamping special-shaped thin-wall parts as claimed in claim 1, wherein the two sides of the bottom plate (1 f) are respectively provided with a kidney-shaped groove (1 k), and the bottom plate (1 f) is fixedly connected with a machine tool workbench through a T-shaped bolt or a screw.
3. The flexible device for clamping special-shaped thin-wall parts as claimed in claim 1, wherein the base plate (2) is provided with a plurality of T-shaped grooves (1 h), positioning holes (1 i) and threaded blind holes (1 j) for connecting a standard fastening piece, a positioning piece, a guide piece and a support piece respectively.
4. The flexible device for clamping special-shaped thin-wall parts as claimed in claim 1, wherein the base plate (2) is provided with positioning pins (6) for positioning the special-shaped thin-wall parts (7).
5. The flexible device for clamping special-shaped thin-wall parts as claimed in claim 1, wherein the base plate (2) is slidably connected with a positioning plate (8) through a set screw (9) for supporting and positioning the special-shaped thin-wall parts (7).
6. The flexible device for clamping special-shaped thin-wall parts as claimed in claim 1, wherein a through hole (3 a) is formed in the middle of the pipe joint (3) and is communicated with an open cavity formed by the bottom plate (1 f) and the peripheral enclosing plates (1 g); the outer circumference of the pipe joint (3) is provided with threads (3 b) for connecting a hose for guiding the magnetorheological fluid (10).
7. The flexible device for clamping special-shaped thin-walled parts as claimed in claim 6, wherein a sealing plug (4) is tightly fitted on one side of the pipe joint (3) far away from the clamp body (1), and the sealing plug (4) is in interference fit with the through hole (3 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313671.5A CN112658748A (en) | 2020-11-20 | 2020-11-20 | Flexible device for clamping special-shaped thin-wall parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313671.5A CN112658748A (en) | 2020-11-20 | 2020-11-20 | Flexible device for clamping special-shaped thin-wall parts |
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| Publication Number | Publication Date |
|---|---|
| CN112658748A true CN112658748A (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011313671.5A Pending CN112658748A (en) | 2020-11-20 | 2020-11-20 | Flexible device for clamping special-shaped thin-wall parts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115401491A (en) * | 2022-09-05 | 2022-11-29 | 南京驰韵科技发展有限公司 | Shaping fixing device for precision cutting of high-precision thin-wall part |
-
2020
- 2020-11-20 CN CN202011313671.5A patent/CN112658748A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115401491A (en) * | 2022-09-05 | 2022-11-29 | 南京驰韵科技发展有限公司 | Shaping fixing device for precision cutting of high-precision thin-wall part |
| CN115401491B (en) * | 2022-09-05 | 2024-01-02 | 南京驰韵科技发展有限公司 | Shaping fixing device for precise cutting of high-precision thin-wall part |
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