Double-station hydraulic clamping tool

Abstract

The utility model relates to the technical field of machine tool clamps, and provides a double-station hydraulic clamping tool which is used for clamping a workpiece to be machined and comprises a rotary platform. A mounting plate is vertically arranged on the rotary platform, a first station and a second station are arranged on the left side and the right side of the mounting plate respectively, and the first station and the second station are symmetrically arranged; and the multiple hydraulic clamps are arranged on the first station and the second station correspondingly, each hydraulic clamp is provided with a clamping head, a flexible abutting block is detachably arranged on each clamping head, and the flexible abutting blocks are used for pressing the surfaces of the workpieces. By means of the technical scheme, the technical problems that in the prior art, a traditional clamp conducts single-side clamping, machining time is delayed when a workpiece is clamped, and a hydraulic clamp is not suitable for different cambered surfaces of the workpiece are solved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool fixture technology, specifically to a dual-station hydraulic clamping fixture. Background Technology

[0002] In the machining process, clamping fixtures are crucial equipment for ensuring workpiece positioning accuracy and machining stability. Traditional single-station clamping fixtures generally suffer from low work efficiency, as workpiece installation and removal operations can only be performed when the fixture is completely stopped and in a non-operating state. This results in a significant portion of the equipment's effective processing time being occupied by loading and unloading time, severely restricting the improvement of production efficiency.

[0003] Meanwhile, hydraulic clamps, as commonly used workpiece clamping devices, struggle to achieve a tight and stable fit with workpieces having curved surfaces when faced with existing clamping structures. Due to insufficient contact area or uneven force distribution, workpieces are prone to displacement during processing, affecting machining accuracy. In fact, localized stress concentration can even cause surface damage to the workpiece, reducing product yield and increasing production costs.

[0004] Therefore, there is an urgent need for a new type of tooling equipment that can achieve uninterrupted clamping during tooling operation and has reliable clamping capability for workpieces with curved surfaces. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a dual-station hydraulic clamping fixture, which solves the technical problems of traditional clamps being single-sided clamping, which delays processing time when clamping workpieces, and hydraulic clamps being unsuitable for different curved surfaces of workpieces.

[0006] According to one aspect, at least one embodiment of the present invention provides a dual-station hydraulic clamping fixture for clamping a workpiece to be processed, comprising:

[0007] Slewing platform;

[0008] The mounting plate is vertically mounted on the rotary platform. The first workstation and the second workstation are located on the left and right sides of the mounting plate, respectively, and the first workstation and the second workstation are arranged symmetrically.

[0009] A hydraulic clamp is provided, wherein the hydraulic clamps are respectively disposed on the first station and the second station. Each hydraulic clamp has a clamping head, and a flexible abutment block is detachably disposed on the clamping head. The flexible abutment block is used to press the surface of the workpiece.

[0010] Optionally, the hydraulic clamp includes:

[0011] The mounting base is detachably mounted on the first workstation or the second workstation, and the clamping head is vertically swaying and mounted on the top of the mounting base;

[0012] A telescopic drive rod is disposed within the mounting base, and the movable end of the telescopic drive rod is hinged to the clamping head. The telescopic drive rod is used to drive the clamping head to swing along the mounting base.

[0013] Optionally, a receiving groove is formed on the bottom surface of the end of the clamping head away from the telescopic drive rod, the flexible abutment block is installed in the receiving groove, and the abutment surface of the flexible abutment block extends out of the receiving groove.

[0014] Optionally, an elastic retaining plate is provided on the inner wall of the receiving groove. The elastic retaining plate is used to press the side wall of the flexible abutment block. The side wall of the flexible abutment block is provided with first retaining teeth at intervals. The surface of the elastic retaining plate facing the flexible abutment block is provided with second retaining teeth at intervals. The first retaining teeth and the second retaining teeth engage.

[0015] Optionally, the flexible abutment block includes:

[0016] The column has several through slots along its axial direction, and the through slots are arranged in a circular array.

[0017] The abutting rod has several rods, each of which is slidably disposed in one of the through grooves, and the abutting surface is the end face of the abutting rod located outside the through groove;

[0018] A plurality of springs are provided, with one spring placed in each of the through slots. One end of the spring is disposed on the bottom surface of the through slot, and the other end of the spring is disposed on the end face of the abutment rod located in the through slot. The spring is used to push the abutment rod out of the through slot so that the abutment rod presses against the surface of the workpiece.

[0019] Optionally, the mounting plate may be detachably provided with a positioning block, which is used to support the side wall of the workpiece.

[0020] Optionally, a positioning post is detachably provided in the middle of the mounting plate, and a clamping rod is deflected at the top of the positioning post, which can deflect outward from the positioning post. The clamping rod can follow the positioning post through the hole in the workpiece and clamp the surface of the workpiece.

[0021] Optionally, the mounting plate may be detachably provided with a plurality of top blocks, the top blocks being arranged opposite to the column, and the top blocks being used to abut against the part of the workpiece that is raised relative to the mounting plate.

[0022] Optionally, a lifting ring is provided on the top of the mounting plate.

[0023] Optionally, the rotary platform is provided with threaded holes, and the bottom of the mounting plate is detachably provided with bolts, which are threadedly connected to the threaded holes.

[0024] The beneficial effects of the embodiments of this utility model are as follows:

[0025] In this invention, during operation, the rotary platform rotates, moving the first workstation to the workpiece loading area. The hydraulic clamp is activated, and the clamping head drives the flexible abutment block to press the workpiece. Then, the rotary platform rotates 180° and enters the processing area, where the machine tool processes the workpiece. Simultaneously, the operator installs a new workpiece at the second workstation. After the first workstation finishes processing, the rotary platform rotates again, moving the second workstation to the processing area to process the new workpiece. At the same time, the operator removes the already processed workpiece and installs the new workpiece at the first workstation, achieving uninterrupted clamping and greatly improving production efficiency. The flexible abutment block can closely fit the surface of workpieces of different shapes, improving the clamping stability of various workpieces and preventing workpiece displacement or surface damage due to poor contact. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the dual-station hydraulic clamping fixture in one embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the receiving groove in the embodiment;

[0029] Figure 3 for Figure 1 A schematic diagram of the flexible grounding block in the embodiment;

[0030] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0031] Figure 5 for Figure 1 Side view of the clamping head in the embodiment;

[0032] Figure 6 for Figure 5 Sectional view at point AA;

[0033] Figure 7 for Figure 6Enlarged view of a section at point C;

[0034] Figure 8 for Figure 1 The embodiment is shown in the side view of the dual-station hydraulic clamping fixture.

[0035] In the diagram: 1. Workpiece, 2. Rotary platform, 3. Mounting plate, 301. First station, 302. Second station, 4. Hydraulic clamp, 41. Mounting base, 42. Clamping head, 420. Receiving groove, 43. Telescopic drive rod, 44. Flexible abutment block, 440. First locking tooth, 441. Abutment rod, 442. Through groove, 443. Column, 45. Elastic clamping plate, 450. Second locking tooth, 46. Spring, 10. Positioning block, 5. Positioning column, 6. Clamping rod, 7. Top block, 8. Bolt, 9. Lifting ring. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0037] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0038] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] like Figures 1-8 As shown, this invention illustrates a dual-station hydraulic clamping fixture in one embodiment, used for clamping a workpiece 1 to be processed. It includes a rotary platform 2, which can be a circular table or a rotating chassis of a machine tool. A mounting plate 3 has a certain thickness and is inverted T-shape, vertically fixed to the rotary platform 2 by bolts. On the left and right sides of the mounting plate 3, there are symmetrically arranged first and second stations 301 and 302, each equipped with at least two hydraulic clamps 4. Flexible abutment blocks 44 are installed on the clamping heads 42 of the hydraulic clamps 4 via snap-fit ​​connections, and these flexible abutment blocks 44 are used to press against the surface of the workpiece 1.

[0043] For example, such as Figure 1 As shown, the mounting plate 3 structure with dual workstations symmetrically arranged on the rotary platform 2, together with multiple hydraulic clamps 4 and clamping heads 42 with flexible abutment blocks 44, can clamp two workpieces 1 at the same time, and the flexible abutment blocks 44 can be adapted to the surface of workpieces 1 with different shapes.

[0044] During operation, the rotary platform 2 rotates, moving the first station 301 to the loading area. The hydraulic clamp 4 is activated, and the clamping head 42 drives the flexible abutment block 44 to clamp the workpiece 1. Then, the rotary platform 2 rotates 180° and enters the processing area, where the machine tool processes the workpiece 1. Simultaneously, the operator installs a new workpiece 1 at the second station 302. After the first station 301 finishes processing, the rotary platform 2 rotates again, moving the second station 302 to the processing area to process the new workpiece 1. At the same time, the operator removes the already processed workpiece 1 from the first station 301 and installs the new workpiece 1, achieving uninterrupted clamping.

[0045] It solves the problem of low working efficiency of traditional single-station clamping fixtures. It can achieve uninterrupted clamping during the operation of the fixture, which greatly improves production efficiency. The flexible abutment block 44 can fit tightly with the surface of workpieces 1 of different shapes, which improves the clamping stability of various workpieces 1 and avoids displacement or surface damage of workpieces 1 due to poor contact.

[0046] In some examples, the hydraulic clamp 4 includes a mounting base 41, which is detachably mounted on a first station 301 or a second station 302. A clamping head 42 is vertically oscillating on the top of the mounting base 41. A telescopic drive rod 43 is disposed inside the mounting base 41, and the movable end of the telescopic drive rod 43 is hinged to the clamping head 42. The telescopic drive rod 43 is used to drive the clamping head 42 to oscillate along the mounting base 41.

[0047] For example, such as Figure 1 and Figure 8 As shown, when workpiece 1 needs to be clamped, the telescopic drive rod 43 extends, pushing the clamping head 42 to swing around the pin on the top of the mounting base 41, causing the clamping head 42 to gradually approach workpiece 1 until the flexible abutment block 44 presses against the surface of workpiece 1. After processing, the telescopic drive rod 43 retracts, causing the clamping head 42 to swing back to its original position, facilitating the removal of workpiece 1. The position and angle of the clamping head 42 can be flexibly adjusted, allowing the hydraulic clamp 4 to better adapt to workpieces 1 with different arc shapes, improving the versatility of the tooling; the driving method of the telescopic drive rod 43 is stable and reliable, providing sufficient clamping force to ensure the stability of workpiece 1 during processing.

[0048] In some examples, a receiving groove 420 is provided on the bottom surface of the end of the clamping head 42 away from the telescopic drive rod 43, and a flexible abutment block 44 is installed in the receiving groove 420, with the abutment surface of the flexible abutment block 44 extending out of the receiving groove 420.

[0049] For example, such as Figures 2-6As shown, when installing the flexible abutment block 44, the abutment block is directly pressed into the receiving groove 420, and the flexible abutment block 44 is fixed in place by cooperating with the receiving groove 420 using its own elasticity. When clamping the workpiece 1, the abutment surface extending out of the receiving groove 420 contacts and presses against the surface of the workpiece 1. This facilitates the installation and removal of the flexible abutment block 44. When the flexible abutment block 44 is worn or needs to be replaced with a different type of abutment block, the operation is simple and quick; it ensures effective contact between the flexible abutment block 44 and the surface of the workpiece 1, improving the clamping effect.

[0050] In some examples, an elastic retaining plate 45, which is a combination of a metal plate and a spring 46, is fixed to the inner wall of the receiving groove 420 by welding or bolts 8. Triangular first retaining teeth 440 are spaced apart on the side wall of the flexible abutment block 44, and matching second retaining teeth 450 are spaced apart on the surface of the elastic retaining plate 45 facing the flexible abutment block 44. During installation, the flexible abutment block 44 is inserted into the receiving groove 420, and then the second retaining teeth 450 engage with the first retaining teeth 440.

[0051] For example, such as Figure 7 As shown, when installing the flexible abutment block 44, the abutment block is inserted into the receiving groove 420. The elastic clamping plate 45 is deflected by compression. When the flexible abutment block 44 is fully installed, the first clamping tooth 440 and the second clamping tooth 450 engage. For disassembly, the operator can manually pry open the elastic clamping plate 45 to remove the flexible abutment block 44. This further improves the stability of the flexible abutment block 44 installation, ensuring that the flexible abutment block 44 will not loosen due to vibration or external force during processing, thus guaranteeing reliable clamping of the workpiece 1. The engaging structure facilitates disassembly and replacement of the flexible abutment block 44.

[0052] In some examples, the flexible abutment block 44 includes a column 443 with a plurality of through slots 442 along the axial direction, the through slots 442 being arranged in a circumferential array; the abutment has a plurality of abutment rods 441, each abutment rod 441 being slidably disposed in a through slot 442, the abutment surface being the end face of the abutment rod 441 located outside the through slot 442; the spring 46 has a plurality of springs 46, each spring 46 being placed in each through slot 442, one end of the spring 46 being disposed on the bottom surface of the through slot 442, and the other end of the spring 46 being disposed on the end face of the abutment rod 441 located in the through slot 442, the spring 46 being used to push the abutment rod 441 out of the through slot 442, so that the abutment rod 441 is pressed against the surface of the workpiece 1.

[0053] For example, such as Figures 3-7As shown, the flexible abutment block 44 has a cylindrical, rectangular, or hexagonal metal column 443. Several through slots 442 are evenly distributed along the axial direction of the column 443, spaced apart and densely distributed. The abutment rod 441 is a cylindrical or hexagonal metal rod, each slidingly disposed within a through slot 442. A spring 46 is placed within each through slot 442, with one end fixed to the bottom surface of the through slot 442 and the other end fixed to the end face of the abutment rod 441 located within the through slot 442. It should be noted that to prevent the spring 46 from completely pushing the abutment rod 441 out of the through slot 442, a limiting ring is provided inside the through slot 442, and a limiting protrusion is provided on the abutment rod 441 to prevent it from falling completely out of the through slot 442.

[0054] When the clamping head 42 moves the flexible abutment block 44 closer to the workpiece 1, the abutment rod 441 first contacts the surface of the workpiece 1. As the clamping head 42 continues to approach, the abutment rod 441 is subjected to the reaction force from the surface of the workpiece 1, compressing the spring 46 and sliding within the through groove 442. This allows each abutment rod 441 to adjust its position according to the surface shape of the workpiece 1 until all abutment rods 441 are pressed firmly against the surface of the workpiece 1. This method is suitable for workpieces 1 with curved surfaces and effectively solves the problem of insufficient contact between existing clamps and curved surfaces. Through the adaptive adjustment of the abutment rod 441 and the spring 46, the contact area with the surface of the workpiece 1 is increased, making the force more uniform, avoiding displacement and surface damage of the workpiece 1 during processing, and improving processing accuracy and product qualification rate.

[0055] In some examples, a positioning block 10 is detachably provided on the mounting plate 3, which is used to support the side wall of the workpiece 1.

[0056] For example, such as Figure 8 As shown, the shape of the positioning block 10 needs to be adapted to the side of the workpiece 1. Ideally, the positioning block 10 can be positioned and engaged with the recessed part of the outer side wall of the workpiece 1. The positioning block 10 is detachably mounted on the mounting plate 3 by bolts 8. When installing the workpiece 1, the side wall of the workpiece 1 is placed on the horizontal surface of the positioning block 10, and the positioning block 10 is used to support the workpiece 1 and help determine the position of the workpiece 1. The detachable positioning block 10 can be adjusted or replaced according to different shapes and sizes of workpieces 1, making it convenient to apply to different types of workpieces 1 and enhancing the versatility of the tooling.

[0057] In some examples, a positioning post 5 is detachably provided in the middle of the mounting plate 3, and a clamping rod 6 is deflected at the top of the positioning post 5, which can deflect outward from the positioning post 5. The clamping rod 6 can follow the positioning post 5 through the hole on the workpiece 1 and clamp the surface of the workpiece 1.

[0058] For example, such as Figure 8As shown, when there is a hole in the workpiece 1, the positioning column 5 is rotated so that the clamping rod 6 follows the positioning column 5 through the hole in the workpiece 1. Then, the clamping rod 6 is deflected to the outside of the positioning column 5 by hydraulic or other driving means to clamp the surface of the workpiece 1.

[0059] In some examples, a number of top blocks 7 are detachably provided on the mounting plate 3. The top blocks 7 are arranged opposite to the column 443 and are used to press against the part of the workpiece 1 that is raised relative to the mounting plate 3.

[0060] For example, such as Figure 8 As shown, the top block 7 is detachably mounted on the mounting plate 3 via bolts 8. Several top blocks 7 are installed at appropriate positions on the mounting plate 3 according to the shape and raised portion of the workpiece 1, so that the top blocks 7 are arranged opposite to the column 443. When the workpiece 1 is mounted on the fixture, the top blocks 7 abut against the raised portion of the workpiece 1 relative to the mounting plate 3. This design facilitates application to workpieces 1 of different shapes, enhancing the versatility of the fixture.

[0061] In some examples, the top of the mounting plate 3 is provided with a lifting ring 9.

[0062] For example, such as Figure 8 As shown, a ring-shaped lifting ring 9 is fixed to the top of the mounting plate 3 by welding or bolts 8, capable of bearing the weight of the tooling and workpiece 1. When the tooling needs to be moved or installed, the hook of the lifting equipment can be hung on the lifting ring 9 to achieve the lifting of the tooling. This simplifies the handling and installation process of the tooling and improves work efficiency; the setting of the lifting ring 9 ensures the safety of the tooling during the lifting process and avoids damage to the tooling or safety accidents caused by improper lifting.

[0063] In some examples, the rotary platform 2 is provided with threaded holes, and the bottom of the mounting plate 3 is detachably provided with bolts 8, which are threadedly connected to the threaded holes.

[0064] For example, such as Figure 8 As shown, the rotary platform 2 has several threaded holes evenly distributed on it, and the mounting plate 3 has corresponding bolt holes at its bottom. When assembling the mounting plate 3, bolts 8 are passed through the bolt holes at the bottom of the mounting plate 3 and threaded into the threaded holes on the rotary platform 2, achieving a detachable connection between the mounting plate 3 and the rotary platform 2. The cooperation of the bolts 8 and the threaded holes ensures a stable connection between the mounting plate 3 and the rotary platform 2, while also facilitating disassembly and installation.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A double station hydraulic clamping tool for clamping a workpiece (1) to be machined, characterized in that, The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface. The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface. The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface. The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface.

2. The double station hydraulic clamping fixture according to claim 1, wherein, The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface. The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface. The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface.

3. The double station hydraulic clamping fixture of claim 2, wherein, The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface.

4. The dual station hydraulic clamping fixture of claim 3, wherein, The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface.

5. The dual station hydraulic clamping fixture of claim 3, wherein, The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface. The utility model relates to a rotary platform (2) is provided with the first work station (301) and the second work station (302) on the left and right sides of the mounting plate (3) of vertical setting in the rotary platform (2), and the hydraulic clamp (4) is arranged on the first work station (301) and the second work station (302) and is used for pressing the workpiece (1) surface. ​ ​ 6. The dual station hydraulic clamping fixture of claim 1 wherein, ​ 7. The dual station hydraulic clamping fixture of claim 1 wherein, The middle part of the mounting plate (3) is detachably provided with a positioning column (5), the top part of the positioning column (5) is provided with a clamping rod (6) capable of deflecting to the outside of the positioning column (5), the clamping rod (6) can penetrate the hole on the workpiece (1) along with the positioning column (5) and clamp the surface of the workpiece (1).

8. The dual station hydraulic clamping fixture of claim 5 wherein, A plurality of top blocks (7) are detachably arranged on the mounting plate (3), the top blocks (7) are arranged opposite to the column (443), and the top blocks (7) are used for abutting against the part of the workpiece (1) that is lifted relative to the mounting plate (3).

9. The dual station hydraulic clamping fixture of claim 1 wherein, The top part of the mounting plate (3) is provided with an eye ring (9).

10. The dual station hydraulic clamping fixture of claim 1 wherein, The rotary platform (2) is provided with a threaded hole, and the bottom part of the mounting plate (3) is detachably provided with a bolt (8), and the bolt (8) is threadedly connected with the threaded hole.

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