CN114012122A - Automatic centering four-jaw single-cylinder hydraulic chuck - Google Patents
Automatic centering four-jaw single-cylinder hydraulic chuck Download PDFInfo
- Publication number
- CN114012122A CN114012122A CN202111346984.5A CN202111346984A CN114012122A CN 114012122 A CN114012122 A CN 114012122A CN 202111346984 A CN202111346984 A CN 202111346984A CN 114012122 A CN114012122 A CN 114012122A
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- China
- Prior art keywords
- clamping jaw
- cover plate
- jaw
- rectangular column
- moving member
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Classifications
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- 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
- B23B31/16083—Jaws movement actuated by gears and racks
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- 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
- B23B31/16083—Jaws movement actuated by gears and racks
- B23B31/16104—Jaws movement actuated by gears and racks using fluid-pressure means to actuate the gripping means
Abstract
The invention discloses an automatic centering four-claw single-cylinder hydraulic chuck, which comprises a shell component, a supporting component, a driven clamping jaw component, a driving clamping jaw component, a thrust transmission component and a driving part, wherein the shell component comprises an upper outer shell and a lower outer shell communicated with the upper outer shell, the supporting component comprises a cover plate for sealing the bottom of the lower outer shell and a rectangular column vertically connected with the cover plate and extending into the lower outer shell, the driven clamping jaw components are symmetrically arranged at the front side and the rear side of the rectangular column, clamping parts of the driven clamping jaw components extend to the bottom of the cover plate, the driving clamping jaw components are distributed at the left side and the right side of the rectangular column and are linked with the driven clamping jaw components, clamping parts of the driving clamping jaw components extend to the bottom of the cover plate, the thrust transmission component is connected with the driving clamping jaw components, the driving part is fixed in the upper outer shell, and output ends of the driving jaw components are connected with the thrust transmission components in pairs, can contract and clamp or expand outwards at the same time, has improved clamping efficiency and positioning accuracy.
Description
Technical Field
The invention relates to the technical field of mechanical chucks, in particular to an automatic-centering four-jaw single-cylinder hydraulic chuck.
Background
When a revolving body workpiece with a rectangular section is machined, a four-jaw chuck is usually adopted for clamping the workpiece, and a single-action four-jaw mechanical chuck is mostly adopted in the current factory, and the four-jaw chuck is manual and consists of a disk body, four small bevel gears and a pair of jaws. The four small bevel gears are meshed with the wire coil, the back of the wire coil is provided with a plane thread structure, and the jaws are equally arranged on the plane thread. When the small bevel gear is pulled by a spanner, the wire coil rotates, and the plane thread on the back of the wire coil enables the jaw to approach or withdraw towards the center, so that the clamping and the loosening of the workpiece are realized. Because each clamping jaw is single-acting, when a rectangular workpiece is clamped, four clamping jaws need to be manually adjusted respectively, the adjustment is time-consuming and labor-consuming when the workpiece is clamped, a virtual jaw phenomenon exists, the positioning precision is low, and the efficiency is low. Hydraulic four-jaw chucks are also used in the market at present, but the chucks only replace manual clamping (loosening) of workpieces by hydraulic pressure, each jaw is also single-acting, and the efficiency and the positioning accuracy are still not high.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or other problems with the prior art four-jaw chuck.
Therefore, the invention aims to provide the self-centering four-jaw single-cylinder hydraulic chuck, the four clamping jaws are symmetrical in pairs and are linked with each other, and the four clamping jaws can be simultaneously contracted and clamped or expanded outwards, so that the clamping efficiency and the positioning precision are improved.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
an automatic centering four-jaw single cylinder hydraulic chuck, comprising:
a housing assembly including an upper housing body and a lower housing body in communication with the upper housing body;
the supporting assembly comprises a cover plate for closing the bottom of the lower outer shell and a rectangular column which is vertically connected with the cover plate and extends into the lower outer shell;
the driven clamping jaw assemblies are symmetrically arranged on the front side and the rear side of the rectangular column, and clamping parts of the driven clamping jaw assemblies extend to the bottom of the cover plate;
the driving clamping jaw assemblies are distributed on the left side and the right side of the rectangular column and are linked with the driven clamping jaw assemblies, and clamping parts of the driving clamping jaw assemblies extend to the bottom of the cover plate;
the thrust transmission assembly is connected with the driving clamping jaw assembly;
the driving part is fixed in the upper outer shell, and the output end of the driving part is connected with the thrust transmission assembly;
when the driving part drives the thrust transmission assembly to move along the side wall of the rectangular column, the driving clamping jaw assembly and the driven clamping jaw assembly are linked, and the clamping part of the driving clamping jaw assembly and the clamping part of the driven clamping jaw assembly gather together with each other towards the central part of the cover plate or disperse towards the outer part of the cover plate.
As a preferred aspect of the self-centering four-jaw single-cylinder hydraulic chuck of the present invention, the driven jaw assembly comprises:
the first vertical moving parts are symmetrically arranged at the front side and the rear side of the rectangular column, can slide up and down along the front side wall and the rear side wall of the rectangular column, and have inclined surfaces on the outer walls;
a first horizontal moving member connected to the inclined surface of the first vertical moving member, horizontally moving back and forth along the inclined surface of the first vertical moving member, and having a tooth groove at the bottom thereof;
a first gear having a tooth groove at a top thereof engaged with a tooth groove of the first horizontal moving member;
the first rack is connected with the top of the cover plate and can slide back and forth along the top of the cover plate, and a tooth groove at the top of the first rack is meshed with a tooth groove at the bottom of the first gear;
and the first clamping jaw is arranged at the bottom of the first rack, extends to the bottom of the cover plate and moves along with the first rack.
As a preferable aspect of the self-centering four-jaw single-cylinder hydraulic chuck of the present invention, the active clamping jaw assembly includes:
the second vertical moving component is arranged on the right side wall of the rectangular column, can slide up and down along the right side wall of the rectangular column and is provided with an inclined surface on the outer wall;
the connecting block is connected with the left side walls of the two first vertical moving components which are symmetrically arranged in the front-back direction;
a second horizontal moving member connected to the inclined surface of the second vertical moving member, horizontally moving back and forth along the inclined surface of the second vertical moving member, and having a tooth groove at the bottom thereof;
a second gear having a tooth groove at a top thereof engaged with a tooth groove of the second horizontal moving member;
the second rack is connected with the top of the cover plate and can slide left and right along the top of the cover plate, and a tooth groove at the top of the second rack is meshed with a tooth groove at the bottom of the second gear;
the second clamping jaw is arranged at the bottom of the second rack, extends to the bottom of the cover plate and moves along with the second rack;
the synchronous push plate is connected with the front side wall and the rear side wall of the second horizontal moving part, moves left and right along with the second horizontal moving part, and the top of the synchronous push plate is provided with a notch through which the rectangular column penetrates;
the moving plate is connected with the top of the cover plate and can slide left and right along the top of the cover plate, and the top of the moving plate and the bottom of the synchronous push plate, which is positioned on the left side of the rectangular column, are fixed;
the third clamping jaw is arranged at the bottom of the moving plate, extends to the bottom of the cover plate and moves along with the moving plate;
the second clamping jaw and the third clamping jaw are symmetrical to each other, and surround the first clamping jaw with two symmetrical to each other to form a rectangular sandwich.
As a preferable aspect of the self-centering four-jaw single-cylinder hydraulic chuck according to the present invention, the thrust transmission assembly includes a hinge base having a top connected to the output end of the driving member, a rocker arm hinged to a middle portion of the hinge base, a first link having one end hinged to one end of the rocker arm and the other end hinged to the second vertical moving member, and a second link having one end hinged to the other end of the rocker arm and the other end hinged to the connecting block.
As a preferable scheme of the self-centering four-jaw single-cylinder hydraulic chuck, a sliding groove matched with the first rack, the second jaw and the moving plate and a through groove for the first jaw, the second jaw and the third jaw to penetrate through are formed in the top of the cover plate.
As a preferable aspect of the self-centering four-jaw single-cylinder hydraulic chuck of the present invention, the driving member is a hydraulic cylinder.
As a preferable scheme of the self-centering four-jaw single-cylinder hydraulic chuck, the outer wall of the connecting block is provided with a follow-up support rod vertically arranged with the connecting block, the inner wall of the lower outer shell is provided with a slide way matched with the follow-up support rod, and the follow-up support rod can slide up and down along the slide way.
As a preferable scheme of the self-centering four-jaw single-cylinder hydraulic chuck, a guide groove for the first vertical moving part and the second vertical moving part to slide up and down is formed in the outer wall of the rectangular column.
Compared with the prior art, the invention has the beneficial effects that: this kind of self-centering four-jaw single cylinder hydraulic chuck reciprocates through the side about the relative rectangle post of drive part drive initiative clamping jaw subassembly, realizes two clamping jaws shrink with equal force simultaneously about the realization, and when initiative clamping jaw subassembly moved, driven clamping jaw subassembly was followed the linkage of initiative clamping jaw simultaneously, realizes two clamping jaws shrink with equal force around the realization, and then realizes that two pairs of jack catchs press from both sides tightly simultaneously or loosen the work piece, realizes self-centering and improves clamping efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:
FIG. 1 is a schematic overall structure diagram of an automatic centering four-jaw single-cylinder hydraulic chuck according to the present invention;
FIG. 2 is a schematic view of a housing assembly removal orientation of a self-centering four-jaw single cylinder hydraulic chuck of the present invention;
FIG. 3 is another directional structural schematic view of a disassembled housing assembly of the self-centering four-jaw single cylinder hydraulic chuck of the present invention;
FIG. 4 is a schematic partial structural view of a self-centering four-jaw single cylinder hydraulic chuck of the present invention as shown in FIG. 2;
FIG. 5 is a schematic view of a portion of the self-centering four-jaw single cylinder hydraulic chuck of the present invention shown in FIG. 4;
FIG. 6 is a bottom view of a self-centering four-jaw single cylinder hydraulic chuck with a disassembled housing assembly of the present invention;
fig. 7 is a cross-sectional view of the whole structure of the self-centering four-jaw single-cylinder hydraulic chuck of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention provides an automatic-centering four-jaw single-cylinder hydraulic chuck, wherein four clamping jaws are symmetrical in pairs and are linked with each other, and can be simultaneously contracted and clamped or expanded outwards, so that the clamping efficiency and the positioning precision are improved.
Referring to fig. 1 to 7, which illustrate schematic structural views of an embodiment of a self-centering four-jaw single-cylinder hydraulic chuck according to the present invention, referring to fig. 1 to 7, a main body of the self-centering four-jaw single-cylinder hydraulic chuck includes a housing assembly 100, a support assembly 200, a driven jaw assembly 300, a driving jaw assembly 400, a thrust transmission assembly 500, and a driving part 600.
The case assembly 100, which is an external protection assembly of the entire device, includes an upper case body 110 and a lower case body 120 communicating with the upper case body 110;
the support assembly 200 includes a cover plate 210 closing the bottom of the lower outer housing 120 and a rectangular post 220 vertically connected to the cover plate 210 and extending into the lower outer housing 120, the rectangular post 220 guiding the parts of the driven jaw assembly 300 and the driving jaw assembly 400 to slide up and down.
The driven jaw assembly 300 is symmetrically disposed at both front and rear sides of the rectangular column 220, and a clamping portion thereof extends to the bottom of the cap plate 210, and more particularly, in the present embodiment, the driven jaw assembly 300 includes first vertical moving members 310, first horizontal moving members 320, first gears 330, first racks 340, and first jaws 350, the first vertical moving members 310 are symmetrically disposed at both front and rear sides of the rectangular column 220 and can slide up and down along front and rear sidewalls of the rectangular column 220, outer walls thereof have inclined surfaces, the first horizontal moving members 320 are connected to the inclined surfaces of the first vertical moving members 310 and can horizontally move back and forth along the inclined surfaces of the first vertical moving members 310, and bottom thereof has splines, the splines at the top of the first gears 330 are engaged with the splines of the first horizontal moving members 320, the first racks 340 are connected to the top of the cap plate 210 and can slide back and forth along the top of the cap plate 210, the toothed groove at the top thereof is engaged with the toothed groove at the bottom of the first gear 330, the first jaw 350 is disposed at the bottom of the first rack gear 340, extends to the bottom of the cover plate 210, moves following the first rack gear 340, when the first vertical moving member 310 slides up or down along the front and rear sidewalls of the rectangular pole 220, since the outer wall of the first horizontal moving member 320 is an inclined surface, at this time, the first horizontal moving member 320 is driven by the first vertical moving member 310 to move horizontally forward or backward, and since the tooth grooves of the top of the first gear 330 are engaged with the tooth grooves of the first horizontal moving member 320, at this time, when the first horizontal moving member 320 moves forward or backward, the first gear 330 rotates to drive the first rack 340 to move in a direction opposite to the moving direction of the first horizontal moving member 320, and further drive the first clamping jaw 350 to move in a direction following the moving direction of the first rack 340. Moreover, because the driven clamping jaw assemblies 300 are symmetrically arranged in front and back relative to the rectangular column 220, the first clamping jaws 350 on the two driven clamping jaw assemblies 300 are also symmetrically arranged and synchronously contract or expand outwards with equal force.
The driving jaw assembly 400 is distributed on the left and right sides of the rectangular column 220 and is coupled with the driven jaw assembly 300, and the clamping portion thereof extends to the bottom of the cover plate 210, specifically, the driving jaw assembly 400 includes a second vertical moving member 410, a connecting block 420, a second horizontal moving member 430, a second gear 440, a second rack 450, a second jaw 460, a synchronous push plate 470, a moving plate 480 and a third jaw 490, the second vertical moving member 410 is disposed on the right sidewall of the rectangular column 220 and can slide up and down along the right sidewall of the rectangular column 220, the outer wall thereof has an inclined surface, the connecting block 420 is connected with the left sidewalls of two first vertical moving members 310 symmetrically disposed in front and rear, the second horizontal moving member 430 is connected with the inclined surface of the second vertical moving member 410 and can horizontally move in front and rear along the inclined surface of the second vertical moving member 410, the bottom thereof has a tooth socket, and the second gear 440 has a tooth socket at the top thereof engaged with the tooth socket of the second horizontal moving member 430, the second rack 450 is connected to the top of the cover plate 210 and can slide left and right along the top of the cover plate 210, the tooth socket at the top thereof is engaged with the tooth socket at the bottom of the second gear 440, the second jaw 460 is disposed at the bottom of the second rack 450 and extends to the bottom of the cover plate 210 to move along the second rack 450, the synchronous push plate 470 is connected to the front and rear side walls of the second horizontal moving member 430 and moves left and right along the second horizontal moving member 430, the top thereof is opened with a slot for the rectangular column 220 to pass through, the moving plate 480 is connected to the top of the cover plate 210 and can slide left and right along the top of the cover plate 210, the top thereof is fixed to the bottom position of the synchronous push plate 470 at the left side of the rectangular column 220, the third jaw 490 is disposed at the bottom of the moving plate 480 and extends to the bottom of the cover plate 210 to move along the moving plate 480, when the second vertical moving member 410 slides up or down along the right side wall of the rectangular column 220, since the outer wall of the second horizontal moving member 430 is an inclined surface, the second horizontal moving member 430 is driven by the second vertical moving member 410 to move horizontally to the left or right, and since the tooth socket at the top of the second gear 440 is engaged with the tooth socket of the second horizontal moving member 430, at this time, when the second horizontal moving member 430 moves to the left or right, the second gear 440 rotates to drive the second rack 450 to move in the direction opposite to the moving direction of the second horizontal moving member 430, and further drive the second clamping jaw 460 to move along with the moving direction of the second rack 450, and when the second horizontal moving member 430 moves to the left or right, the synchronous push plate 470 follows the second horizontal moving member 430 to move to the left or right together, and drives the moving plate 480 to slide along with the moving direction, and further drive the third clamping jaw 490 to move, and since the second clamping jaw 460 and the third clamping jaw 490 are symmetrically arranged, the second clamping jaw 460 and the third clamping jaw 490 are synchronously contracted or expanded with equal force, and the second clamping jaw 460 and the third clamping jaw 490 which are symmetrical oppositely and the two first clamping jaws 350 which are symmetrical mutually surround to form a rectangular sandwich, so that when a workpiece is clamped, the workpiece can be positioned in the sandwich.
The thrust transmission assembly 500 is connected to the driving clamping jaw assembly 400 and serves as an intermediate transmission member for driving the driving clamping jaw assembly 400 to move, and specifically, the thrust transmission assembly 500 includes a hinge base 510 having a top connected to an output end of the driving member 600, a rocker arm 520 hinged to a middle portion of the hinge base 510, a first link 530 having one end hinged to one end of the rocker arm 520 and the other end hinged to the second vertical moving member 410, and a second link 540 having one end hinged to the other end of the rocker arm 520 and the other end hinged to the connecting block 420. When the driving member 600 applies a pushing force or a pulling force to the pushing force transmission assembly 500, the first link 530 and the second link 540 of the pushing force transmission assembly 500 simultaneously push the second vertical moving member 410 and the connection block 420 to move up or down along the rectangular column 220, respectively, and since the first link 530 and the second link 540 are equal in length and the connection block 420 is connected to the first vertical moving member 310 at the same time, the pushing force transmission assembly 500 drives the second vertical moving member 410 to move, and simultaneously the first vertical moving member 310 also moves up or down.
The driving part 600 is fixed in the upper outer case 110, and the output end is connected with the thrust transmission assembly 500 for providing a driving force. Preferably, in the present embodiment, the driving member 600 is a hydraulic cylinder.
With reference to fig. 1 to 7, the self-centering four-jaw single-cylinder hydraulic chuck of the present embodiment is specifically used as follows: the driving member 600 provides a thrust or a pulling force source for the thrust transmission assembly 500, at which time the thrust transmission assembly 500 drives the second vertical moving member 410 and the first vertical moving member 310 to move upward or downward together, when the first vertical moving member 310 slides up or down along the front and rear sidewalls of the rectangular pole 220, since the outer wall of the first horizontal moving member 320 is an inclined surface, at this time, the first horizontal moving member 320 is driven by the first vertical moving member 310 to move horizontally forward or backward, and since the tooth grooves of the top of the first gear 330 are engaged with the tooth grooves of the first horizontal moving member 320, at this time, when the first horizontal moving member 320 moves forward or backward, the first gear 330 rotates to drive the first rack 340 to move in a direction opposite to the moving direction of the first horizontal moving member 320, and further drive the first clamping jaw 350 to move in a direction following the moving direction of the first rack 340. And because the driven clamping jaw assemblies 300 are symmetrically arranged in front and back with respect to the rectangular column 220, the first clamping jaws 350 on the two driven clamping jaw assemblies 300 are also symmetrically arranged, and contract or expand outwards with equal force synchronously, and at the same time, when the second vertical moving component 410 slides upwards or downwards along the right side wall of the rectangular column 220, because the outer wall of the second horizontal moving component 430 is an inclined surface, the second horizontal moving component 430 is driven by the second vertical moving component 410 to move horizontally leftwards or rightwards, and because the tooth socket at the top of the second gear 440 is meshed with the tooth socket of the second horizontal moving component 430, at this time, when the second horizontal moving component 430 moves leftwards or rightwards, the second gear 440 rotates to drive the second rack 450 to move in the direction opposite to that of the second horizontal moving component 430, and further drive the second clamping jaws 460 to move along the direction of the second rack 450, meanwhile, when the second horizontal moving part 430 moves leftwards or rightwards, the synchronous push plate 470 moves leftwards or rightwards together along with the second horizontal moving part 430, and drives the moving plate 480 to slide along with the movement of the second horizontal moving part, so as to drive the third clamping jaw 490 to move, and because the second clamping jaw 460 and the third clamping jaw 490 are symmetrically arranged, the second clamping jaw 460 and the third clamping jaw 490 contract or expand outwards synchronously and with equal force, and because the symmetrical second clamping jaw 460 and the symmetrical third clamping jaw 490 and the two symmetrical first clamping jaws 350 surround to form a rectangular sandwich, when clamping a workpiece, the workpiece can be positioned in the sandwich, and the first clamping jaw 350, the second clamping jaw 460 and the third clamping jaw 490 contract inwards or expand outwards and release simultaneously.
Further, in this embodiment, since the driven jaw assembly 300 is completely symmetrical, the forward and backward forces acting on the rectangular post 220 are substantially equal in magnitude and opposite in direction. However, due to the asymmetric design of the active clamping jaw assembly 400, the acting force of the rectangular column 220 in the left-right direction is unbalanced, and if no other measures are taken, the bending stress is excessive, so that the radial dimension of the rectangular column 220 is excessive. In order to solve the problem, the outer wall of the connecting block 420 is provided with the vertically arranged follow-up supporting rod 420a, the inner wall of the lower outer shell 120 is provided with a slideway matched with the follow-up supporting rod 420a, and the follow-up supporting rod 420a can slide up and down along the slideway, so that the problem is solved. In the present embodiment, the outer wall of the rectangular column 220 is provided with a guide groove 220a for the first vertical moving member 310 and the second vertical moving member 410 to slide up and down, and the top of the cover plate 210 is provided with a sliding groove 210a adapted to the first rack 340, the second clamping jaw 460 and the moving plate 480, and a through groove 210b for the first clamping jaw 350, the second clamping jaw 460 and the third clamping jaw 460 to penetrate through.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. The utility model provides an automatic four claws of centering single cylinder hydraulic chuck which characterized in that includes:
a housing assembly (100) including an upper outer case (110) and a lower outer case (120) communicating with the upper outer case (110);
the support assembly (200) comprises a cover plate (210) for closing the bottom of the lower outer shell (120) and a rectangular column (220) which is vertically connected with the cover plate (210) and extends into the lower outer shell (120);
the driven clamping jaw assemblies (300) are symmetrically arranged at the front side and the rear side of the rectangular column (220), and clamping parts of the driven clamping jaw assemblies extend to the bottom of the cover plate (210);
the driving clamping jaw assemblies (400) are distributed on the left side and the right side of the rectangular column (220) and are linked with the driven clamping jaw assemblies (300), and clamping parts of the driving clamping jaw assemblies extend to the bottom of the cover plate (210);
a thrust transmission assembly (500) connected with the active jaw assembly (400);
the driving part (600) is fixed in the upper outer shell (110), and the output end of the driving part is connected with the thrust transmission assembly (500);
when the driving part (600) drives the thrust transmission assembly (500) to act along the side wall of the rectangular column (220), the driving clamping jaw assembly (400) and the driven clamping jaw assembly (300) are linked, and the clamping part of the driving clamping jaw assembly (400) and the clamping part of the driven clamping jaw assembly (300) gather together towards the central part of the cover plate (210) or disperse towards the outer part of the cover plate (210).
2. A self-centering four-jaw, single-cylinder hydraulic chuck according to claim 1, wherein the driven jaw assembly (300) comprises:
first vertical moving members (310) symmetrically disposed at front and rear sides of the rectangular column (220), and vertically slidable along front and rear sidewalls of the rectangular column (220), the outer walls of which have inclined surfaces;
a first horizontal moving member (320) connected to the inclined surface of the first vertical moving member (310) and horizontally movable back and forth along the inclined surface of the first vertical moving member (310), the first horizontal moving member having a tooth groove at the bottom thereof;
a first gear (330) having a spline at the top thereof engaged with the spline of the first horizontal moving member (320);
a first rack (340) connected to the top of the cover plate (210) and capable of sliding back and forth along the top of the cover plate (210), wherein the tooth socket at the top is engaged with the tooth socket at the bottom of the first gear (330);
and the first clamping jaw (350) is arranged at the bottom of the first rack (340), extends to the bottom of the cover plate (210) and moves along with the first rack (340).
3. A self-centering four-jaw, single-cylinder hydraulic chuck according to claim 2, wherein said active jaw assembly (400) comprises:
a second vertical moving member (410) provided on the right side wall of the rectangular column (220) and slidable up and down along the right side wall of the rectangular column (220), the outer wall of which has an inclined surface;
a connecting block (420) connected to left side walls of the two first vertical moving members (310) symmetrically arranged in front and rear;
a second horizontal moving member (430) connected to the inclined surface of the second vertical moving member (410), horizontally moving back and forth along the inclined surface of the second vertical moving member (410), and having a tooth groove at the bottom thereof;
a second gear (440) having a tooth groove at the top thereof engaged with a tooth groove of the second horizontal moving member (430);
a second rack (450) connected to the top of the cover plate (210) and capable of sliding left and right along the top of the cover plate (210), wherein the tooth socket at the top is engaged with the tooth socket at the bottom of the second gear (440);
a second clamping jaw (460) arranged at the bottom of the second rack (450), extending to the bottom of the cover plate (210) and moving along with the second rack (450);
the synchronous push plate (470) is connected with the front side wall and the rear side wall of the second horizontal moving part (430), moves left and right along with the second horizontal moving part (430), and the top of the synchronous push plate is provided with a notch for the rectangular column (220) to penetrate through;
the moving plate (480) is connected with the top of the cover plate (210) and can slide left and right along the top of the cover plate (210), and the top of the moving plate is fixed with the bottom position of the synchronous push plate (470) on the left side of the rectangular column (220);
the third clamping jaw (490) is arranged at the bottom of the moving plate (480), extends to the bottom of the cover plate (210) and moves along with the moving plate (480);
the second clamping jaw (460) and the third clamping jaw (490) are symmetrical to each other, and are surrounded by the two symmetrical first clamping jaws (350) to form a rectangular sandwich.
4. A self-centering four-jaw single-cylinder hydraulic chuck according to claim 3, wherein the thrust transmission assembly (500) comprises a hinge base (510) having a top portion connected to the output end of the driving member (600), a swing arm (520) hinged to the middle portion of the hinge base (510), a first connecting rod (530) having one end portion hinged to one end portion of the swing arm (520) and the other end portion hinged to the second vertical moving member (410), and a second connecting rod (540) having one end portion hinged to the other end portion of the swing arm (520) and the other end portion hinged to a connecting block (420).
5. The self-centering four-jaw single-cylinder hydraulic chuck according to claim 3, characterized in that a sliding groove (210 a) matched with the first rack (340), the second clamping jaw (460) and the moving plate (480) and a through groove (210 b) for the first clamping jaw (350), the second clamping jaw (460) and the third clamping jaw (460) to penetrate are formed at the top of the cover plate (210).
6. A self-centering four-jaw single cylinder hydraulic chuck according to claim 1 or 3, wherein the driving member (600) is a hydraulic cylinder.
7. The self-centering four-jaw single-cylinder hydraulic chuck according to claim 3, wherein the outer wall of the connecting block (420) is provided with a follow-up support rod (420 a) perpendicular to the outer wall, the inner wall of the lower outer shell (120) is provided with a slide way matched with the follow-up support rod (420 a), and the follow-up support rod (420 a) can slide up and down along the slide way.
8. The self-centering four-jaw single-cylinder hydraulic chuck according to claim 3, characterized in that the outer wall of the rectangular column (220) is provided with a guide groove (220 a) for the first vertical moving component (310) and the second vertical moving component (410) to slide up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111346984.5A CN114012122B (en) | 2021-11-15 | 2021-11-15 | Automatic centering four-jaw single-cylinder hydraulic chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111346984.5A CN114012122B (en) | 2021-11-15 | 2021-11-15 | Automatic centering four-jaw single-cylinder hydraulic chuck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114012122A true CN114012122A (en) | 2022-02-08 |
| CN114012122B CN114012122B (en) | 2023-01-17 |
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| CN202111346984.5A Active CN114012122B (en) | 2021-11-15 | 2021-11-15 | Automatic centering four-jaw single-cylinder hydraulic chuck |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117346038A (en) * | 2023-12-04 | 2024-01-05 | 山东龙建设计集团有限公司 | Land gradient measuring device for homeland space planning |
| CN117381223A (en) * | 2023-12-13 | 2024-01-12 | 四川众信通用电力有限公司 | Welding set is used in transformer production |
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| DE2530598A1 (en) * | 1974-07-26 | 1976-02-05 | Vincenzo Gatti | Workpiece to machine tool transport - achieved by interconnected jaws, gearwheel and/or toothed rod coupled |
| CN103153507A (en) * | 2010-08-23 | 2013-06-12 | Ev集团有限责任公司 | Chuck that can be coupled in an automated manner |
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|---|---|---|---|---|
| CN117346038A (en) * | 2023-12-04 | 2024-01-05 | 山东龙建设计集团有限公司 | Land gradient measuring device for homeland space planning |
| CN117346038B (en) * | 2023-12-04 | 2024-02-23 | 山东龙建设计集团有限公司 | Land gradient measuring device for homeland space planning |
| CN117381223A (en) * | 2023-12-13 | 2024-01-12 | 四川众信通用电力有限公司 | Welding set is used in transformer production |
| CN117381223B (en) * | 2023-12-13 | 2024-02-23 | 四川众信通用电力有限公司 | Welding set is used in transformer production |
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| Publication number | Publication date |
|---|---|
| CN114012122B (en) | 2023-01-17 |
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