CN111804942A - Center-sharing clamping tool - Google Patents
Center-sharing clamping tool Download PDFInfo
- Publication number
- CN111804942A CN111804942A CN202010586456.6A CN202010586456A CN111804942A CN 111804942 A CN111804942 A CN 111804942A CN 202010586456 A CN202010586456 A CN 202010586456A CN 111804942 A CN111804942 A CN 111804942A
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- clamping
- workpiece
- guide groove
- rotating plate
- center
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- 230000000712 assembly Effects 0.000 claims abstract description 19
- 238000000429 assembly Methods 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
- B23B31/1612—Jaws movement actuated by cam surface in a radial plane
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention provides a center-sharing clamping tool, relates to the technical field of clamping devices, and solves the technical problems that a universal clamp in the prior art cannot quickly position and clamp a workpiece, and the overall height of the universal clamp is high, so that the machining space of a machine tool is influenced. This press from both sides tight frock in branch includes that upper portion is equipped with the base that holds the recess, rotate the rotor plate that sets up in holding the recess, with base fixed connection's roof, be used for with the clamping component of work piece butt and with rotor plate fixed connection's handle, be equipped with a plurality of first guide ways on the rotor plate, the edge setting that the first end of first guide way all is close to the rotor plate, the second end all follows rotor plate circumference and gradually to being close to the crooked extension of rotor plate axis direction. The top plate comprises a platform and a plurality of second guide grooves arranged along the radial direction of the top plate, the clamping assemblies are respectively arranged in the second guide grooves, the lower parts of the clamping assemblies can be clamped into the corresponding first guide grooves in a sliding mode, and the self-centering clamping device is used for quickly performing self-centering clamping on a workpiece.
Description
Technical Field
The invention relates to the technical field of clamping devices, in particular to a center-sharing clamping tool.
Background
In the CNC machining process, most of workpieces need to be leveled, separated and clamped on a base table, and the work is repeated and is prone to error, so that the effective machining time of the CNC machining is influenced. At present, general fixtures in the market, such as a vice, a self-centering vice, a four-jaw chuck and the like, cannot well solve the problem of quickly positioning and clamping workpieces in all directions, or have high cost. In addition, the conventional four-jaw chuck needs to clamp a workpiece in a thread screwing mode, and the overall height of the chuck is high, so that the machining space of a machine tool is affected.
Therefore, how to solve the technical problems that the universal fixture in the prior art cannot quickly position and clamp a workpiece and the overall height of the universal fixture is high, which affects the processing space of a machine tool, becomes an important technical problem to be solved by the person in the art.
Disclosure of Invention
The invention aims to provide a center-sharing clamping tool, which solves the technical problems that a universal clamp in the prior art cannot quickly position and clamp a workpiece, and the overall height of the universal clamp is high, so that the machining space of a machine tool is influenced. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a center-dividing clamping tool, which comprises: the upper part is provided with a base for accommodating the groove, and the side wall of the base is provided with an operation groove; the rotating plate is rotatably arranged in the accommodating groove, a plurality of first guide grooves are formed in the upper part of the rotating plate along the circumferential direction of the rotating plate, the first ends of the first guide grooves are arranged close to the edge of the rotating plate, and the second ends of the first guide grooves extend along the circumferential direction of the rotating plate and gradually extend towards the direction close to the central axis of the rotating plate in a curved manner; the top plate covers the upper part of the accommodating groove and is fixedly connected with the base, and the top plate comprises a platform which is arranged at the middle position of the top plate and is used for placing a workpiece and a plurality of second guide grooves which are arranged along the radial direction of the top plate; the lower part of the clamping component is clamped into the first guide groove, and the clamping component and the first guide groove can slide relatively; the free end of the handle is fixedly connected with the rotating plate and penetrates through the operating groove and extends out of the operating groove; when the handle drives the rotating plate to rotate to the first position, the clamping assemblies slide inwards to the second end of the first guide groove along the second guide groove, and the clamping assemblies are abutted to a workpiece; when the handle drives the rotating plate to rotate reversely to the second position, the clamping assemblies slide outwards to the first end of the first guide groove along the second guide groove, and the clamping assemblies are far away from the workpiece.
Preferably, the first guide grooves, the second guide grooves and the clamping assemblies are arranged in a group in a one-to-one correspondence manner, and the clamping assemblies are arranged in pairs and oppositely along the X-axis direction and the Y-axis direction respectively.
Preferably, the clamping assembly comprises a sliding block arranged in the second guide groove, a pressing plate fixedly arranged on the upper portion of the sliding block and used for being abutted to a workpiece, and a pin shaft penetrating through the sliding block and the pressing plate and then clamped into the first guide groove.
Preferably, the upper surface of the platform is a refining surface having a flatness of 0.005 mm or less.
Preferably, the platform is a square boss integrally formed with the top plate and protruding upward from the top plate.
Preferably, the second guide groove is an open groove, and one of the side walls of the slider and the side wall of the second guide groove is provided with a protruding portion, and the other is provided with a recessed portion for the protruding portion to extend into.
Preferably, the end of the pressure plate close to the workpiece extends out of the side of the sliding block, and the side wall of the pressure plate is provided with a plurality of grooves.
Preferably, the base is detachably connected with the top plate, and the pressing plate is detachably connected with the sliding block.
Preferably, the connection between the handle and the rotating plate is a detachable connection.
Preferably, the platform, the rotating plate and the base are all provided with through holes which are communicated and used for processing workpieces.
The center-dividing clamping tool comprises a base, a rotating plate, a top plate, a clamping assembly and a handle, wherein a first guide groove and a second guide groove are respectively formed in the rotating plate and the top plate, a user can firstly fixedly install the center-dividing clamping tool on a base station, and a workpiece to be machined is placed on a platform of the top plate so as to set a zero point in the vertical Z-axis direction. During the use, the user can rotate the handle, so that the handle drives the rotor plate and rotates when the first position, the position of pressing from both sides promptly, clamping component all follows the second end of second guide way inside slip to first guide way, because the existence of first guide way promptly, the rotor plate rotates and carries out linear motion along the second guide way in order to drive clamping component, so that a plurality of clamping component all are close to in step to platform department, thereby make a plurality of clamping component all exert thrust to the work piece in corresponding direction and support tightly, carry out X axle direction and Y axle direction automatic centering to the work piece promptly, so that carry out subsequent CNC processing. After the processing is finished, the user can reversely rotate the handle, so that when the handle drives the rotating plate to the second position, the rotating plate is released, the clamping assembly slides outwards to the first end of the first guide groove along the second guide groove, and the clamping assembly is far away from the workpiece to loosen the workpiece. The invention can clamp the workpiece by a mode that a user holds the handle, can automatically center the workpiece in the XY direction, and can position and clamp a blank or a fine material aluminum piece conveniently by self-positioning a zero point position in the Z direction, thereby simplifying the earlier stage work of CNC machining, having simple structure and small thickness of the base and the top plate, reducing the overall height of the invention, having low cost, and solving the technical problems that the universal clamp in the prior art can not quickly position and clamp the workpiece and the overall height is high, thereby influencing the machining space of a machine tool.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of a centering clamping tool provided in an embodiment of the present invention;
FIG. 2 is a schematic view of the lower portion of the center clamping fixture provided in the embodiment of the present invention;
FIG. 3 is a cross-sectional view of a centering clamping tool provided in an embodiment of the present invention;
fig. 4 is an exploded view of a centering clamping fixture according to an embodiment of the present invention.
FIG. 1-base; 2-rotating plate; 3-a top plate; 4-a clamping assembly; 5-a handle; 6-accommodating the groove; 7-operating a groove; 8-a first guide groove; 9-a platform; 10-a second guide groove; 11-a workpiece; 12-a slide block; 13-a platen; 14-a pin shaft; 15-a boss; 16-a recess; 17-a groove; 18-through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention aims to provide a center-sharing clamping tool, which solves the technical problems that a universal clamp in the prior art cannot quickly position and clamp a workpiece, and the overall height of the universal clamp is high, so that the machining space of a machine tool is influenced.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1-4, the invention provides a centering clamping tool, which comprises a base 1, a rotating plate 2, a top plate 3, a clamping assembly 4 and a handle 5, wherein the upper part of the base 1 is provided with an accommodating groove 6 with a circular cross-sectional profile, so that the rotating plate 2 can be installed and placed, and the rotating plate can rotate relatively. The side wall of the base 1 is provided with a strip-shaped operating groove 7 for a user to rotate the handle 5 to drive the rotating plate 2 to rotate. The rotor plate 2 rotates and installs in the holding tank, the external diameter of rotor plate 2 equals or slightly is less than the internal diameter that holds recess 6, the upper portion of rotor plate 2 is provided with a plurality of first guide ways 8, a plurality of first guide ways 8 all set up along the circumference evenly distributed of rotor plate 2, the marginal position department that the first end of arbitrary first guide way 8 all is close to rotor plate 2 sets up, the second end is along the circumference of rotor plate 2 and gradually to the axis direction inflection that is close to rotor plate 2 and extend the setting, first guide way 8 can be the gradually big arc groove structure of camber gradual change, with direction and positioning action to clamping component 4, the shape of a plurality of first guide ways 8 and for rotor plate 2 center and marginal position homogeneous phase, so that the motion of a plurality of clamping component 4 is unanimous. The top plate 3 covers the upper part of the accommodating groove 6 and is fixedly connected with the bottom plate so as to be buckled with the bottom plate, and the rotating plate 2 plays a role in limiting and preventing dropping. The top plate 3 includes a stage 9 and a plurality of second guide grooves 10, and the stage 9 is fixedly disposed at a central position of the top plate 3 to place a workpiece 11. The second guide groove 10 may be a linear groove provided in a radial direction of the top plate 3 to provide a guide function for the clamp assembly 4 to approach or separate from the stage 9. The clamping assembly 4 is arranged in the second guide groove 10 and can slide along the length direction of the second guide groove 10, the width of the clamping assembly 4 is equal to or slightly smaller than that of the second guide groove 10, the lower portion of the clamping assembly 4 is clamped into the first guide groove 8, and the clamping assembly 4 can also slide along the length profile direction of the first guide groove 8 and is used for being abutted to the workpiece 11. The handle 5 is fixedly connected with the rotating plate 2, and the free end of the handle penetrates through and extends out of the operating groove 7 for holding operation of a user. With such an arrangement, a user can firstly fixedly mount the whole machine of the invention on the base station, and place the workpiece 11 to be processed on the platform 9 of the top plate 3 to set the zero point in the vertical Z-axis direction. The Z-axis direction is a vertical direction perpendicular to the upper surface of the stage 9, and the X-axis direction and the Y-axis direction are two perpendicular directions in which the upper surface of the stage 9 extends at the center thereof. During the use, the rotatable handle 5 of user, so that handle 5 drives rotor plate 2 and rotates when the first position, the position of pressing from both sides promptly, clamping component 4 all follows the second end of second guide way 10 inside slip to first guide way 8, because the existence of first guide way 8 promptly, rotor plate 2 rotates and carries out linear motion with driving clamping component 4 along second guide way 10, so that a plurality of clamping component 4 all are close to platform 9 department in step, thereby make a plurality of clamping component 4 all exert thrust to work piece 11 in corresponding direction and support tightly, carry out X axle direction and Y axle direction self-centering to work piece 11 promptly, so that carry out subsequent CNC processing. After the processing is completed, the user can rotate the handle 5 reversely, so that when the handle 5 drives the rotating plate 2 to the second position, i.e. the rotating plate is released, the clamping assemblies 4 all slide outwards to the first ends of the first guide grooves 8 along the second guide grooves 10, and the clamping assemblies 4 all keep away from the workpiece 11, so as to release the workpiece 11. The invention can clamp the workpiece 11 by a mode that a user holds the handle 5, can automatically center the workpiece 11 in XY directions, can conveniently position and clamp a blank or a fine material aluminum part by self-positioning a zero point position in Z direction, and simplifies the earlier stage work of CNC machining.
As an optional implementation manner of the embodiment of the present invention, the first guide grooves 8, the second guide grooves 10, and the clamping assemblies 4 are arranged in a group in a one-to-one correspondence manner, preferably, the first guide grooves 8, the second guide grooves 10, and the clamping assemblies 4 are arranged in four groups, and the clamping assemblies 4 are respectively arranged in pairs along the X axis and the Y axis, and are opposite to each other, so as to respectively clamp the workpiece 11 in the X axis direction and the Y axis direction synchronously.
As an optional implementation manner of the embodiment of the present invention, the clamping assembly 4 includes a slider 12, a pressing plate 13 and a pin 14, the slider 12 is slidably disposed in the second guide groove 10, the pressing plate 13 is fixedly connected to an upper portion of the slider 12 for abutting against the workpiece 11, the pin 14 penetrates through the slider 12 and the pressing plate 13 and then is clamped into the first guide groove 8, that is, the slider 12 and the pressing plate 13 are vertically provided with a through hole 18 for the pin 14 to penetrate through, a diameter of the pin 14 may be equal to or slightly smaller than a width of the first guide groove 8, optionally, a side wall of the first guide groove 8 near the second end may be provided with a rubber sheet to enhance a friction force and a clamping force between the pin 14 and the side wall of the first guide groove 8, or a width between side walls of the first guide groove 8 near the second end may be gradually reduced and a transverse recessed clamping groove is disposed at the second end, the lower side wall of the pin shaft 14 is clamped, friction force and clamping force between the pin shaft 14 and the first guide groove 8 can be further enhanced, and the rotary plate 2 rotates due to the arrangement that the distances between the first guide groove 8 and the center of the rotary plate 2 are different, so that the pin shaft 14 is driven to move, the slide block 12 and the pressing plate 13 are driven to be close to or far away from the workpiece 11 along the first guide groove 8, the structure is simple, and the operation is convenient.
Further, the upper surface of the table 9 is a finish grinding surface having a flatness of 0.005 mm or less to further refine the zero point position of the workpiece 11 in the Z direction, improving the accuracy of machining the workpiece 11.
Further, the platform 9 is a square boss integrally formed with the top plate 3 and protruding upward from the top plate 3, that is, the X-axis direction and the Y-axis direction can respectively follow the length direction and the width direction of the platform 9, so that a user can easily identify the position of the platform 9, and then the workpiece 11 can be placed.
Further, the second guide groove 10 is an open groove to facilitate the installation of the clamping assembly 4. One of the side walls of the sliding block 12 and the side wall of the second guide groove 10 is provided with a convex part 15, the other one is provided with a concave part 16 for the convex part 15 to extend into, and the convex part 15 and the concave part 16 are both in a strip structure so as to guide and limit the sliding block 12 to move along the second guide groove 10.
Further, the end of the pressing plate 13 close to the workpiece 11 extends out of the side of the sliding block 12, that is, the pressing plate 13 is only abutted to the workpiece 11 through the side wall of the end of the pressing plate 13, the side wall of the pressing plate 13 is provided with a plurality of grooves 17, and the grooves 17 can be, but not limited to, strip-shaped grooves, so that the contact area between the clamping assembly 4 and the workpiece 11 can be reduced, and the machining error caused by insufficient flatness of the contact plane can be reduced.
Further, the base 1 and the top plate 3 and the pressing plate 13 and the sliding block 12 are detachably connected, the connection can be but not limited to screw connection, the installation and the connection are convenient, and the maintenance and the replacement of each part are convenient.
As an optional implementation manner of the embodiment of the present invention, the connection between the handle 5 and the rotating plate 2 is a detachable connection, which may be, but not limited to, a threaded connection, and the installation and connection are convenient, and when the handle 5 is clamped or loosened in place, the user may detach the handle 5 to avoid the interference with the position of other devices.
As an optional implementation manner of the embodiment of the present invention, the platform 9, the rotating plate 2 and the base 1 are all provided with a vertical through hole 18 communicated with each other for processing the workpiece 11, such as performing a drilling operation on the middle of the workpiece 11. Optionally, an annular extension body may be extended downward from the lower portion of the rotating plate 2 and may extend into the through hole 18 of the base 1, so as to further improve the coaxiality between the rotating plate 2 and the base 1.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides a divide centre gripping frock, its characterized in that includes:
the upper part of the base is provided with a base (1) for accommodating a groove (6), and the side wall of the base is provided with an operation groove (7);
the rotating plate (2) is rotatably arranged in the accommodating groove (6), a plurality of first guide grooves (8) are formed in the upper portion of the rotating plate along the circumferential direction of the rotating plate, first ends of the first guide grooves (8) are arranged close to the edge of the rotating plate (2), and second ends of the first guide grooves extend along the circumferential direction of the rotating plate (2) and gradually extend towards the direction of the central axis close to the rotating plate (2);
the top plate (3) covers the upper part of the accommodating groove (6) and is fixedly connected with the base (1), and the top plate comprises a platform (9) arranged at the middle position of the top plate and used for placing a workpiece (11) and a plurality of second guide grooves (10) arranged along the radial direction of the top plate;
the clamping assembly (4) is arranged in the second guide groove (10) and used for abutting against a workpiece (11), the lower part of the clamping assembly is clamped into the first guide groove (8), and the clamping assembly and the first guide groove can slide relative to each other;
the handle (5) is fixedly connected with the rotating plate (2), and the free end of the handle penetrates through and extends out of the operating groove (7);
when the handle (5) drives the rotating plate (2) to rotate to the first position, the clamping assemblies (4) slide inwards to the second end of the first guide groove (8) along the second guide groove (10), and the clamping assemblies (4) are abutted to a workpiece (11); when the handle (5) drives the rotating plate (2) to rotate reversely to the second position, the clamping assemblies (4) slide outwards to the first end of the first guide groove (8) along the second guide groove (10), and the clamping assemblies (4) are far away from the workpiece (11).
2. The center-dividing clamping tool according to claim 1, wherein the first guide grooves (8), the second guide grooves (10) and the clamping assemblies (4) are correspondingly arranged in groups one by one, and the clamping assemblies (4) are oppositely arranged two by two along the X-axis direction and the Y-axis direction respectively.
3. The center-dividing clamping tool according to claim 1, wherein the clamping assembly (4) comprises a sliding block (12) arranged in the second guide groove (10), a pressing plate (13) fixedly arranged on the upper portion of the sliding block (12) and used for abutting against a workpiece (11), and a pin shaft (14) penetrating through the sliding block (12) and the pressing plate (13) and then clamped into the first guide groove (8).
4. A center-sharing clamping tool according to claim 3, characterized in that the upper surface of the platform (9) is a fine grinding surface, and the flatness of the fine grinding surface is equal to or less than 0.005 mm.
5. The center-dividing clamping tool according to claim 4, wherein the platform (9) is a square boss which is integrally formed with the top plate (3) and protrudes upwards from the top plate (3).
6. The center-dividing clamping tool according to claim 3, wherein the second guide groove (10) is an open groove, and side walls of the slider (12) and the second guide groove (10) are provided with a convex portion (15) and a concave portion (16) for the convex portion (15) to extend into.
7. A center-sharing clamping tool according to claim 3, wherein the end of the pressure plate (13) close to the workpiece (11) extends outwards from the side of the slide block (12), and the side wall of the pressure plate (13) is provided with a plurality of grooves (17).
8. The center-sharing clamping tool according to claim 3, wherein the base (1) and the top plate (3) are detachably connected, and the pressing plate (13) and the sliding block (12) are detachably connected.
9. Center clamp tooling according to claim 1, characterized in that the connection between the handle (5) and the rotating plate (2) is a detachable connection.
10. The center-dividing clamping tool according to claim 1, wherein the platform (9), the rotating plate (2) and the base (1) are provided with through holes (18) which are communicated and used for processing a workpiece (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010586456.6A CN111804942B (en) | 2020-06-24 | Clamping tool in separating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010586456.6A CN111804942B (en) | 2020-06-24 | Clamping tool in separating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111804942A true CN111804942A (en) | 2020-10-23 |
| CN111804942B CN111804942B (en) | 2024-07-02 |
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| CN112318163A (en) * | 2020-11-03 | 2021-02-05 | 梅美琪 | High-precision machining and casting mold for automobile part production |
| CN112497258A (en) * | 2020-11-17 | 2021-03-16 | 武汉联影智融医疗科技有限公司 | Mechanical arm and joint quick-change interface thereof |
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