CN110977527B - Clamping device for workpiece with special-shaped curved surface structure - Google Patents
Clamping device for workpiece with special-shaped curved surface structure Download PDFInfo
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- CN110977527B CN110977527B CN201911276716.3A CN201911276716A CN110977527B CN 110977527 B CN110977527 B CN 110977527B CN 201911276716 A CN201911276716 A CN 201911276716A CN 110977527 B CN110977527 B CN 110977527B
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- curved surface
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- shaped curved
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- 238000003825 pressing Methods 0.000 claims abstract description 84
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 238000009434 installation Methods 0.000 claims abstract description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 6
- 206010066054 Dysmorphism Diseases 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a clamping device for a workpiece with a special-shaped curved surface structure, and belongs to the technical field of clamping devices. The clamping device is simple in structure and convenient and fast to operate, and can clamp special-shaped curved surface structural workpieces with different shapes and sizes by adjusting the number and the installation positions of the supporting rods, the number and the positions of the universal pressing mechanisms and the curvature of the pressing plates in the universal pressing mechanisms, and the clamping device also has a good clamping effect on aluminum alloy special-shaped curved surface structural workpieces with the wall thickness of more than 1mm, is strong in universality, low in preparation cost and good in application prospect.
Description
Technical Field
The invention relates to a clamping device for a workpiece with a special-shaped curved surface structure, and belongs to the technical field of clamping devices.
Background
In the processes of machining and product debugging experiments, parts to be machined need to be positioned and locked, the positioning is used for ensuring the machining and debugging precision, and the locking can prevent the parts from flying out in the machining or experiment processes and accidents. The conventional clamping device has strong universality for thick-wall workpieces with regular shapes, and has poor or even ineffective clamping and positioning effects for thin-wall workpieces with special-shaped curved surface appearance structures.
Disclosure of Invention
In view of the above, the invention provides a clamping device for a workpiece with a special-shaped curved surface structure, which has the advantages of simple structure, convenience in operation and low manufacturing cost, and has a good clamping effect on an aluminum alloy workpiece with a wall thickness of more than 1mm, so that the problem of difficulty in clamping and positioning the workpiece with the thin-wall special-shaped curved surface structure can be solved.
The purpose of the invention is realized by the following technical scheme.
A clamping device for a workpiece with a special-shaped curved surface structure comprises an upper base, a lower base, a supporting rod and a universal pressing mechanism;
the upper base and the lower base are hollow structures with two open ends;
more than one mounting threaded hole is processed on the supporting rod along the length direction;
more than two supporting rods are arranged between the upper base and the lower base, one end of each supporting rod is fixedly connected with the upper base, and the other end of each supporting rod is fixedly connected with the lower base; more than one universal pressing mechanism is installed on each supporting rod, one end of each universal pressing mechanism is in threaded fit with the installation threaded hole in each supporting rod so as to control the pressing force of the special-shaped curved surface structure workpiece, and the other end of each universal pressing mechanism is attached to the special-shaped curved surface of the special-shaped curved surface structure workpiece along with the shape.
Furthermore, the clamping device also comprises a thrust screw, the support rod is also provided with limiting threaded holes communicated with the mounting threaded holes, and the limiting threaded holes correspond to the mounting threaded holes one to one; the thrust screw is arranged in a limiting threaded hole in the supporting rod and matched with a universal pressing mechanism in the mounting threaded hole, so that the compression force is prevented from being loosened in the clamping process.
Furthermore, threaded holes with the number larger than that of the support rods are correspondingly processed on the end surfaces of the upper base and the lower base, one end of each support rod is in threaded connection with the upper base, and the other end of each support rod is in threaded connection with the lower base; the number of the mounting threaded holes processed on each supporting rod is larger than that of the universal pressing mechanisms mounted on each supporting rod; according to the specific shape of the special-shaped curved surface structure workpiece, the number and the installation positions of the supporting rods can be changed, the number and the installation positions of the pressing mechanisms can be changed, and the clamping reliability of the special-shaped curved surface structure workpiece is guaranteed.
Further, the universal pressing mechanism comprises a universal screw and a pressing plate; one end of the universal screw is processed into a ball head structure, the pressing plate is an arc-shaped plate, and a spherical groove is processed on the convex arc surface of the pressing plate; the ball head structure of the universal screw is matched with the spherical groove of the pressing plate to realize flexible pressing of the pressing plate along with the rotation of the workpiece with the special-shaped curved surface structure, and the concave cambered surface of the pressing plate is attached to the special-shaped curved surface of the workpiece with the special-shaped curved surface structure along with the shape.
Furthermore, a groove is processed on the concave arc surface of the pressing plate, and a rubber strip is arranged in the groove of the pressing plate, so that the friction force between the pressing plate and the contact surface of the special-shaped curved surface structure workpiece can be increased, and the surface roughness of the special-shaped curved surface structure workpiece can be protected from being compressed and damaged.
Furthermore, after the rubber strip is arranged in the groove of the pressing plate, the thickness of the rubber strip protruding out of the concave cambered surface of the pressing plate is 1.5-2 mm.
Furthermore, the curvature of the concave cambered surface of the pressing plate is not less than that of the corresponding position curved surface of the workpiece with the special-shaped curved surface structure, and preferably equal to each other.
Furthermore, the pressing plate is divided into an upper pressing plate and a lower pressing plate, a hemispherical groove is respectively processed on the upper pressing plate and the lower pressing plate, and the upper pressing plate and the lower pressing plate are connected together through screws.
Furthermore, the upper base and the lower base are of a hollow circular ring structure or a hollow cylindrical structure.
Furthermore, when the material of dysmorphism curved surface structure work piece is the aluminum alloy, its wall thickness is not less than 1 mm.
Has the advantages that:
the clamping device is simple in structure and convenient and fast to operate, and can clamp special-shaped curved surface structural workpieces with different shapes and sizes by adjusting the number and the installation positions of the supporting rods, the number and the positions of the universal pressing mechanisms and the curvature of the pressing plates in the universal pressing mechanisms, and the clamping device also has a good clamping effect on aluminum alloy special-shaped curved surface structural workpieces with the wall thickness of more than 1mm, is strong in universality, low in preparation cost and good in application prospect.
Drawings
Fig. 1 is a schematic structural view of the clamping device in the embodiment.
Fig. 2 is a schematic structural diagram of the universal pressing mechanism.
FIG. 3 is a schematic diagram of a principle that a universal pressing mechanism can rotate along with a workpiece with a special-shaped curved surface structure to realize flexible pressing.
FIG. 4 is a schematic structural diagram of a workpiece with a special-shaped curved surface structure clamped by the pressing device in the embodiment.
The device comprises an upper base 1, a support rod 2, a lower base 3, a pressure plate 4, a universal screw rod 5, a thrust screw 6, a lower pressure plate 7, a rubber strip 8, an upper pressure plate 9, a screw 10 and a special-shaped curved surface structure workpiece 11.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Example 1
As shown in fig. 1, the clamping device for the workpiece with the special-shaped curved surface structure comprises an upper base 1, a lower base 3, a support rod 2, a universal pressing mechanism and a thrust screw 6;
the upper base 1 and the lower base 3 are hollow circular ring structures with two open ends, and five threaded holes are processed on the end faces, as shown in fig. 1;
two mounting threaded holes and two limiting threaded holes are processed in the support rod 2 along the length direction, and the limiting threaded holes are communicated with the mounting threaded holes in a one-to-one correspondence manner, as shown in fig. 1;
as shown in fig. 2, the universal pressing mechanism comprises a universal screw 5, a pressing plate 4 and a rubber strip 8; one end of a universal screw 5 is processed into a ball head structure, a pressing plate 4 is an arc-shaped plate formed by connecting an upper pressing plate 9 and a lower pressing plate 7 through a screw 10, a hemispherical groove is respectively processed on the upper pressing plate 9 and the lower pressing plate 7, two hemispherical grooves are formed after the upper pressing plate 9 and the lower pressing plate 7 are combined together, a groove is processed on a concave arc surface of the pressing plate 4, a rubber strip 8 is installed in the groove of the pressing plate 4, the thickness of the rubber strip 8 protruding out of the concave arc surface of the pressing plate 4 is 1.5mm, and the curvature of the concave arc surface of the pressing plate 4 is equal to the curvature of a curved surface of a special-shaped curved surface structure workpiece 11 to be clamped;
the workpiece 11 with the special-shaped curved surface structure related to the embodiment is made of aluminum alloy, and the wall thickness is 2.5mm, as shown in fig. 4;
five supporting rods 2 are arranged between an upper base 1 and a lower base 3, one end of each supporting rod 2 is in threaded connection with the upper base 1, and the other end of each supporting rod 2 is in threaded connection with the lower base 3; two universal pressing mechanisms are mounted on each supporting rod 2, one end of a universal screw 5 of each universal pressing mechanism is in threaded fit with a mounting threaded hole in each supporting rod 2 to control the pressing force on the special-shaped curved surface structure workpiece 11, a ball head structure at the other end of the universal screw 5 is matched with a spherical groove of a pressing plate 4 of each universal pressing mechanism to realize flexible pressing of the pressing plate 4 along with the rotation of the special-shaped curved surface structure workpiece 11 (as shown in figure 3), and a concave arc surface of the pressing plate 4 is attached to the surface of the special-shaped curved surface structure workpiece 11 along with the shape (as shown in figure 4); thrust screw 6 installs in the spacing screw hole on branch 2, and cooperatees with universal screw 5 in the installation screw hole, prevents to press from both sides tight in-process pressure relaxation.
In the practical application process, the number of threaded holes larger than the number of the supporting rods 2 can be processed on the end surfaces of the upper base 1 and the lower base 3, and the number of mounting threaded holes processed on each supporting rod 2 is larger than the number of universal pressing mechanisms mounted on each supporting rod 2; according to the specific shape of the workpiece 11 with the special-shaped curved surface structure, the number and the installation positions of the supporting rods 2 can be changed, the number and the installation positions of the pressing mechanisms are changed, the curvature of the concave arc surface of the pressing plate 4 is changed, the thickness of the rubber strip 8 protruding out of the concave arc surface of the pressing plate 4 is changed, and the clamping reliability of the workpiece 11 with different special-shaped curved surface structures is guaranteed.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a dysmorphism curved surface structure work piece clamping device which characterized in that: the clamping device comprises an upper base (1), a lower base (3), a thrust screw (6), a support rod (2) and a universal pressing mechanism;
the upper base (1) and the lower base (3) are hollow structures with two open ends;
more than one mounting threaded hole is processed on the supporting rod (2) along the length direction, and limiting threaded holes communicated with the mounting threaded holes are also processed, and the limiting threaded holes correspond to the mounting threaded holes one by one;
the universal pressing mechanism comprises a universal screw rod (5) and a pressing plate (4), one end of the universal screw rod (5) is processed into a ball head structure, the pressing plate (4) is an arc-shaped plate formed by connecting an upper pressing plate (9) and a lower pressing plate (7) together through a screw (10), a hemispherical groove is respectively processed on the upper pressing plate (9) and the lower pressing plate (7), and the two hemispherical grooves form a spherical groove after the upper pressing plate (9) and the lower pressing plate (7) are combined together; the ball head structure of the universal screw (5) is matched with the spherical groove of the pressure plate (4); a groove is processed on the concave cambered surface of the pressing plate (4), a rubber strip (8) is arranged in the groove of the pressing plate (4), and the thickness of the rubber strip (8) protruding out of the concave cambered surface of the pressing plate (4) is 1.5-2 mm;
more than two supporting rods (2) are arranged between the upper base (1) and the lower base (3), one end of each supporting rod (2) is fixedly connected with the upper base (1), and the other end of each supporting rod is fixedly connected with the lower base (3); more than one universal pressing mechanism is arranged on each supporting rod (2), a universal screw (5) of each universal pressing mechanism is in threaded fit with a mounting threaded hole in each supporting rod (2), and the concave cambered surface of a pressing plate (4) of each universal pressing mechanism is attached to the special-shaped curved surface of the special-shaped curved surface structure workpiece (11) along with the shape; the thrust screw (6) is arranged in a limit threaded hole on the support rod (2) and is matched with a universal screw rod (5) of a universal pressing mechanism in the installation threaded hole.
2. The special-shaped curved surface structure workpiece clamping device as claimed in claim 1, wherein: the end faces of the upper base (1) and the lower base (3) are correspondingly provided with threaded holes, the number of the threaded holes is larger than that of the support rods (2), one end of each support rod (2) is in threaded connection with the upper base (1), and the other end of each support rod is in threaded connection with the lower base (3).
3. The special-shaped curved surface structure workpiece clamping device as claimed in claim 1, wherein: the number of the mounting threaded holes processed on each supporting rod (2) is larger than that of the universal pressing mechanisms mounted on each supporting rod (2).
4. The special-shaped curved surface structure workpiece clamping device as claimed in claim 1, wherein: the curvature of the concave cambered surface of the pressure strip (4) is not less than that of the corresponding position curved surface of the workpiece (11) with the special-shaped curved surface structure.
5. The special-shaped curved surface structure workpiece clamping device as claimed in claim 1, wherein: the upper base (1) and the lower base (3) are of a hollow circular ring structure or a hollow cylindrical structure.
6. The special-shaped curved surface structure workpiece clamping device as claimed in claim 1, wherein: when the workpiece (11) with the special-shaped curved surface structure is made of aluminum alloy, the wall thickness of the workpiece is not less than 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911276716.3A CN110977527B (en) | 2019-12-12 | 2019-12-12 | Clamping device for workpiece with special-shaped curved surface structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911276716.3A CN110977527B (en) | 2019-12-12 | 2019-12-12 | Clamping device for workpiece with special-shaped curved surface structure |
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| Publication Number | Publication Date |
|---|---|
| CN110977527A CN110977527A (en) | 2020-04-10 |
| CN110977527B true CN110977527B (en) | 2022-06-07 |
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| CN201911276716.3A Active CN110977527B (en) | 2019-12-12 | 2019-12-12 | Clamping device for workpiece with special-shaped curved surface structure |
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