Annular hydraulic clamp

Abstract

The utility model relates to an annular hydraulic clamp. The annular hydraulic clamp comprises a base; the hydraulic cylinder is arranged at the upper end of the base; the limiting assemblies are annularly and evenly distributed at the upper end of the base, each limiting assembly comprises a supporting base, a pressing plate, a fixing plate and a connecting rod, the supporting bases are arranged at the upper end of the base, the fixing plates are arranged at the output ends of the hydraulic cylinders, one ends of the pressing plates are hinged to the fixing plates, and the other ends of the pressing plates are hinged to the connecting rods. The two ends of the connecting rod are hinged to the pressing plate and the supporting base respectively. The two end faces of the annular workpiece can be extruded and fixed through matched extrusion of the multiple sets of pressing plates and the supporting bases, so that the contact area between the device and the annular workpiece is increased, and the clamping stability of the device to the annular workpiece can be guaranteed; and meanwhile, the annular workpiece can be prevented from being deformed and damaged due to too large clamping force, so that the clamping stability and safety of the annular workpiece can be guaranteed, and the practicability is high.

Description

Technical Field

[0001] The present application relates to the technical field of clamping devices, and in particular to an annular hydraulic clamp. Background Art

[0002] At present, as an indispensable process device in mechanical processing, the main function of the fixture is to quickly tighten the workpiece and ensure that the machine tool, tool and workpiece maintain the correct relative position.

[0003] In related technologies, common fixtures on lathes mainly include three-jaw automatic centering chucks and other devices. In order to fix workpieces of different shapes and sizes, three-jaw chucks, four-jaw chucks and other different forms of fixtures are generally used to achieve clamping. These fixtures are driven manually or hydraulically, and can meet the needs of workpiece fixation in different processes to a certain extent.

[0004] However, when using the existing three-jaw chuck to clamp annular workpieces, the contact area between the jaws and the annular workpiece is small, which can easily cause the workpiece to deform when subjected to large forces, and when subjected to small forces, the clamping may not be firm, causing the workpiece to fly out during processing, posing a major safety hazard and seriously affecting processing quality and production safety.

[0005] In view of the above problems, a ring-shaped hydraulic clamp is now designed. Utility Model Content

[0006] An embodiment of the present application provides an annular hydraulic clamp to solve the problem in the related art that when a three-jaw chuck is used to clamp an annular workpiece, the workpiece is easily deformed when subjected to a large force, and the clamping may not be firm when subjected to a small force.

[0007] In a first aspect, an annular hydraulic clamp is provided, comprising:

[0008] base;

[0009] a hydraulic cylinder disposed at the upper end of the base;

[0010] The limiting assembly is provided with several groups, and the several limiting assemblies are evenly distributed in a ring shape on the upper end of the base. The limiting assembly includes a support seat, a pressure plate, a fixed plate and a connecting rod. The support seat is arranged at the upper end of the base, the fixed plate is arranged at the output end of the hydraulic cylinder, one end of the pressure plate is hinged to the fixed plate, and the two ends of the connecting rod are respectively hinged to the pressure plate and the support seat.

[0011] In some embodiments, a plurality of positioning rods are provided at the upper end of the base, and the plurality of positioning rods are evenly distributed on the base in a ring shape.

[0012] In some embodiments, the positioning rod is slidably disposed on the base;

[0013] The base is further provided with a driving assembly, which is connected to a plurality of positioning rods to drive the plurality of positioning rods to move closer to or away from each other.

[0014] In some embodiments, the drive assembly includes a rotating column, a rotating disk, a worm gear, a worm, and a rotating block, wherein the rotating column is rotatably disposed in the base, the rotating disk and the worm gear are both sleeved on the rotating column and fixedly connected thereto, the worm gear is rotatably disposed in the base and cooperates with the worm gear, and the rotating block is disposed on one side of the base and fixedly connected to one end of the worm gear;

[0015] The base is provided with a plurality of guide grooves corresponding to the plurality of positioning rods;

[0016] The positioning rod includes a rod body, a slider, a first fixed column, a connecting plate and a second fixed column. The slider is slidably arranged in a guide groove and cooperates with it. The rod body is arranged at the upper end of the slider, the first fixed column is arranged at the lower end of the slider, and the second fixed column is arranged on the turntable. The two ends of the connecting plate are respectively sleeved on the first fixed column and the second fixed column, and the connecting plate is rotatably connected to the first fixed column and the second fixed column.

[0017] In some embodiments, the top end of the rod is conical.

[0018] In some embodiments, the cross-section of the slider is convex.

[0019] The embodiment of the present application provides an annular hydraulic clamp, which can place the annular workpiece on a support seat, and then push the fixed plate to move through the hydraulic cylinder, so that the fixed plate pushes the pressure plate to rotate toward the base through the connecting rod and close to the upper end face of the annular workpiece. In this way, the two end faces of the annular workpiece can be squeezed and fixed by the coordinated extrusion of several groups of pressure plates and the support seat, which can increase the contact area between the device and the annular workpiece, not only ensuring the stability of the device in clamping the annular workpiece, but also preventing the annular workpiece from being deformed and damaged due to excessive clamping force, so as to ensure the stability and safety of the annular workpiece clamping, thereby ensuring the processing quality and production safety of the annular workpiece, and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic diagram of a three-dimensional structure provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of a three-dimensional structure provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of a three-dimensional explosion structure provided in an embodiment of the present application.

[0025] In the figure: 1. Base; 11. Guide groove; 2. Hydraulic cylinder; 3. Limiting assembly; 31. Support seat; 32. Pressure plate; 33. Fixed plate; 34. Connecting rod; 4. Positioning rod; 41. Rod body; 42. Slider; 43. First fixed column; 44. Connecting plate; 45. Second fixed column; 5. Driving assembly; 51. Rotating column; 52. Turntable; 53. Worm gear; 54. Worm; 55. Rotating block. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] An embodiment of the present application provides an annular hydraulic clamp, which can solve the problem in the related art that when clamping an annular workpiece through a three-jaw chuck, the workpiece is easily deformed when subjected to large forces, and the clamping may not be firm when subjected to small forces.

[0028] See also Figure 1-Figure 4 , an annular hydraulic clamp, comprising: a base 1, a hydraulic cylinder 2 and several groups of limit assemblies 3, the hydraulic cylinder 2 is arranged at the upper end of the base 1, and several limit assemblies 3 are evenly distributed in a ring shape on the upper end of the base 1, the limit assembly 3 includes a support seat 31, a pressure plate 32, a fixed plate 33 and a connecting rod 34, the support seat 31 is arranged at the upper end of the base 1, the fixed plate 33 is arranged at the output end of the hydraulic cylinder 2, one end of the pressure plate 32 is hinged to the fixed plate 33, and the two ends of the connecting rod 34 are respectively hinged to the pressure plate 32 and the support seat 31;

[0029] When the workpiece is to be fixed on the workpiece, the staff can place the workpiece on the support seats 31 and then start the hydraulic cylinder 2 to push the fixing plate 33 away from the base 1. In this way, the fixing plate 33 will push the pressure plate 32 to rotate closer to the base 1 through the connecting rod 34 during the movement, so that the pressure plate 32 is close to the upper end surface of the workpiece and the support seat 31 is close to the lower end surface of the workpiece. In this way, the two end surfaces of the workpiece can be squeezed and fixed by the cooperation of the pressure plates 32 and the support seats 31, thereby clamping and fixing the two end surfaces of the workpiece. In this way, the contact area between the device and the workpiece can be increased by clamping and fixing the two end surfaces of the workpiece. This not only ensures the stability of the workpiece clamping by the device, but also prevents the workpiece from being deformed and damaged by excessive clamping force. This ensures the stability and safety of the workpiece clamping, thereby ensuring the processing quality and production safety of the workpiece, and is highly practical.

[0030] Furthermore, in this embodiment, a plurality of positioning rods 4 are provided at the upper end of the base 1, and the plurality of positioning rods 4 are evenly distributed on the base 1 in a ring shape;

[0031] In this way, when an annular workpiece needs to be placed, the annular workpiece can be placed on several positioning rods 4, so that the several positioning rods 4 are close to the inner wall of the annular workpiece. In this way, the annular workpiece can be accurately positioned by multiple positioning rods 4, thereby ensuring the consistency of the clamping position of each annular workpiece. In this way, when the annular workpieces need to be processed in batches, the staff does not need to manually adjust the positioning of each annular workpiece, which is highly practical.

[0032] Furthermore, the positioning rods 4 are slidably arranged on the base 1, and a driving assembly 5 is further provided on the base 1. The driving assembly 5 is connected to the plurality of positioning rods 4 to drive the plurality of positioning rods 4 to move closer to or away from each other;

[0033] In this way, when it is necessary to position annular workpieces of different diameters, the driving assembly 5 can be used to drive several positioning rods 4 to move closer to or farther away from each other at the same time, thereby adjusting the spacing between the multiple positioning rods 4. In this way, the positioning rods 4 can also fit the inner walls of annular workpieces of different diameters, thereby limiting and fixing annular workpieces of different diameters, so that the device can be suitable for clamping and fixing annular workpieces of different diameters, thereby enhancing the applicability of the device and facilitating use.

[0034] See also Figure 3-Figure 4In this embodiment, the driving assembly 5 includes a rotating column 51, a rotating disk 52, a worm gear 53, a worm 54 and a rotating block 55. The rotating column 51 is rotatably arranged in the base 1. The rotating disk 52 and the worm gear 53 are both sleeved on the rotating column 51 and fixedly connected thereto. The worm 54 is rotatably arranged in the base 1 and cooperates with the worm gear 53. The rotating block 55 is provided on one side of the base 1 and fixedly connected to one end of the worm 54.

[0035] The base 1 is provided with a plurality of guide grooves 11 corresponding to the plurality of positioning rods 4. The positioning rod 4 includes a rod body 41, a slider 42, a first fixing column 43, a connecting plate 44 and a second fixing column 45. The slider 42 is slidably arranged in the guide groove 11 and cooperates therewith. The rod body 41 is provided at the upper end of the slider 42, the first fixing column 43 is provided at the lower end of the slider 42, and the second fixing column 45 is provided on the turntable 52. The two ends of the connecting plate 44 are respectively sleeved on the first fixing column 43 and the second fixing column 45, and the connecting plate 44 is rotatably connected to the first fixing column 43 and the second fixing column 45.

[0036] In this way, when it is necessary to position annular workpieces of different diameters, the staff can use a tool to rotate the rotating block 55, so that the rotating block 55 drives the worm 54 to rotate, so that the worm 54 will drive the rotating column 51 to rotate through the coordinated transmission with the worm gear 53, and then the rotating column 51 will drive the turntable 52 and several second fixed columns 45 to rotate, so that the second fixed column 45 will pull the slider 42 to move through the connecting plate 44 and the first fixed column 43. In this way, through the limiting effect of the sliding connection between the slider 42 and the guide groove 11, the slider 42 can drive the rod body 41 to move closer to or away from the center, thereby adjusting the spacing between multiple rod bodies 41 to fit with the inner wall of annular workpieces of different diameters, which is highly practical.

[0037] The top of the rod 41 is conical;

[0038] In this way, when the annular workpiece is sleeved on the rod body 41, the conical tip can guide the annular workpiece, which is conducive to the staff to smoothly sleeve the annular workpiece on multiple rod bodies 41 and is convenient for use.

[0039] Preferably, the cross section of the slider 42 is in the shape of a "convex" character;

[0040] In this way, the slider 42 can only perform linear sliding motion in the guide groove 11, thereby preventing the slider 42 from being separated from the guide groove 11 during use and affecting the use effect of the device.

[0041] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0042] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0043] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A ring-shaped hydraulic clamp, characterized in that: It includes: Base (1); A hydraulic cylinder (2) is provided at the upper end of the base (1); A limiting assembly (3) is provided with a plurality of groups, wherein the plurality of limiting assemblies (3) are evenly distributed in a ring shape on the upper end of the base (1), and the limiting assembly (3) comprises a support seat (31), a pressure plate (32), a fixed plate (33) and a connecting rod (34). The support seat (31) is provided at the upper end of the base (1), the fixed plate (33) is provided at the output end of the hydraulic cylinder (2), one end of the pressure plate (32) is hinged on the fixed plate (33), and the two ends of the connecting rod (34) are respectively hinged on the pressure plate (32) and the supporting seat (31).

2. The annular hydraulic clamp according to claim 1, characterized in that: A plurality of positioning rods (4) are provided at the upper end of the base (1), and the plurality of positioning rods (4) are evenly distributed on the base (1) in a ring shape.

3. The annular hydraulic clamp according to claim 2, characterized in that: The positioning rod (4) is slidably arranged on the base (1); A driving assembly (5) is also provided on the base (1), and the driving assembly (5) is connected to a plurality of positioning rods (4) to drive the plurality of positioning rods (4) to move closer to or farther from each other.

4. The annular hydraulic clamp according to claim 3, characterized in that: The driving assembly (5) comprises a rotating column (51), a rotating disk (52), a worm wheel (53), a worm (54) and a rotating block (55); the rotating column (51) is rotatably arranged in the base (1); the rotating disk (52) and the worm wheel (53) are both sleeved on the rotating column (51) and fixedly connected thereto; the worm (54) is rotatably arranged in the base (1) and cooperates with the worm wheel (53); the rotating block (55) is arranged on one side of the base (1) and fixedly connected to one end of the worm (54); The base (1) is provided with a plurality of guide grooves (11) corresponding to the plurality of positioning rods (4); The positioning rod (4) includes a rod body (41), a slider (42), a first fixed column (43), a connecting plate (44) and a second fixed column (45); the slider (42) is slidably arranged in the guide groove (11) and matched therewith; the rod body (41) is arranged at the upper end of the slider (42); the first fixed column (43) is arranged at the lower end of the slider (42); the second fixed column (45) is arranged on the turntable (52); the two ends of the connecting plate (44) are respectively sleeved on the first fixed column (43) and the second fixed column (45); the connecting plate (44) is rotatably connected to the first fixed column (43) and the second fixed column (45).

5. The annular hydraulic clamp according to claim 4, characterized in that: The top end of the rod body (41) is conical.

6. The annular hydraulic clamp according to claim 4, characterized in that: The cross section of the slider (42) is in the shape of a "convex" character.

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