Automatic clamping jig

Abstract

The utility model relates to an automatic clamping jig which comprises a clamping assembly and a fixing assembly, the clamping assembly comprises a clamping piece, a bearing mechanism and a plurality of hydraulic driving pieces, the hydraulic driving pieces and the clamping piece are arranged on the bearing mechanism, and the driving ends of the hydraulic driving pieces are connected with the clamping piece through hinge mechanisms; the fixing assembly comprises a positioning piece, a positioning mandrel and a locking piece, one end of the positioning mandrel is arranged on the positioning piece, a positioning hole is formed in the positioning piece, a positioning matching hole is formed in the bearing mechanism, the positioning hole is aligned with the positioning matching hole, and the locking piece penetrates through the positioning hole and the positioning matching hole to lock the positioning piece and the bearing mechanism. By means of the technical scheme, automatic clamping operation can be achieved, the machining efficiency and the product machining quality are improved, the multiple hydraulic driving pieces can synchronously act to drive the clamping pieces to clamp the workpiece, then it can be ensured that the cambered surface of the workpiece is attached to the cambered surface of the jig, and the clamping stability and reliability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining fixtures in metal locking bone plate systems, in particular to an automatic clamping fixture. BACKGROUND

[0002] The metal locking bone plate system is a medical device for treating fractures, mainly composed of a locking bone plate and a locking screw. Specifically, the locking screw tail thread and the locking plate thread hole are locked and fixed at both ends of the fracture. During the operation, the operator needs to select the appropriate steel plate, measure the depth, select the appropriate screw length, and then screw the screw into the fracture end on both sides, and then clamp the operation to ensure that the bone plate and screw can be accurately fixed at the fracture site during the operation to prevent the displacement of the fracture end. Further, the clamping of the metal locking bone plate system can provide the support and stability required by the fracture site, help to reduce the pressure on the fracture site, and promote the healing of the fracture.

[0003] In the prior art, after the workpiece is positioned in the profiling cavity, manual clamping is required, that is, the workpiece is clamped by screwing the pressure plate. Since the workpiece is a punched part, the workpiece arc surface and the cavity arc surface cannot be completely matched, so when locking the workpiece, the sequence of locking the bolts needs to be considered. Each bolt is pre-tightened before being locked. However, the above-mentioned clamping method has poor stability, human factors affect the clamping effect of the product, and the quality of the product processing is affected. Further, the bolts need to be rotated out to a certain extent to clamp and unclamp the workpiece, so there are technical problems of low production efficiency and high labor intensity of manual clamping workers. CONTENT OF THE INVENTION

[0004] In order to solve the problems of the prior art, the present application provides a technical scheme of an automatic clamping fixture, that is, the present application sets up a clamping assembly including a clamping part, a bearing mechanism and a plurality of hydraulic driving parts, and a fixing assembly including a positioning part, a positioning mandrel and a locking part, so as to realize automatic clamping operation, improve processing efficiency and product processing quality. At the same time, the plurality of hydraulic driving parts can synchronously drive the clamping part to clamp the workpiece, so as to ensure the matching of the workpiece arc surface and the fixture arc surface, and improve the stability and reliability of clamping.

[0005] The present application provides an automatic clamping fixture, which comprises a clamping assembly and a fixing assembly.

[0006] The clamping assembly comprises a clamping part, a bearing mechanism and a plurality of hydraulic driving parts, the plurality of hydraulic driving parts and the clamping part are arranged on the bearing mechanism, and the driving ends of the plurality of hydraulic driving parts are connected with the clamping part through a hinge mechanism.

[0007] The fixing assembly comprises a positioning member, a positioning mandrel and a locking member, one end of the positioning mandrel is arranged on the positioning member, the positioning member is provided with a positioning hole, the bearing mechanism is provided with a positioning matching hole, the positioning hole and the positioning matching hole are arranged in alignment, and the locking member penetrates the positioning hole and the positioning matching hole to lock the positioning member and the bearing mechanism.

[0008] Further, the bearing mechanism comprises an L-shaped bearing plate, a plurality of bearing cavities are arranged on the L-shaped bearing plate, and the bearing cavities are arranged in one-to-one correspondence with the hydraulic driving members.

[0009] Further, the L-shaped bearing plate is provided with a positioning plate, the positioning plate is provided with a positioning pin hole, the positioning plate is arranged on the L-shaped bearing plate through a positioning pin, one end of the positioning pin penetrates the positioning pin hole and extends into the L-shaped bearing plate.

[0010] Further, the positioning plate is provided with a profiling cavity and a clearance groove, the profiling cavity is used for positioning a workpiece, and the clearance groove is arranged at one side edge of the positioning plate.

[0011] Further, the clamping members are arranged in one-to-one correspondence with the hydraulic driving members, each clamping member is arranged on a corresponding hydraulic driving member, and each clamping member is connected with a driving end of the corresponding hydraulic driving member through the hinge mechanism.

[0012] Further, the clamping assembly further comprises a positioning sleeve, the positioning sleeve is arranged on the L-shaped bearing plate, the positioning sleeve is provided with a positioning fixing hole, the positioning fixing hole, the positioning matching hole and the positioning hole are arranged in alignment, and the locking member penetrates the positioning fixing hole, the positioning matching hole and the positioning hole in sequence.

[0013] Further, the positioning member is provided with a positioning core hole, the positioning core hole is arranged in the middle of the positioning member, the periphery of the positioning hole is provided with a plurality of screw holes, and the plurality of screw holes are uniformly distributed around the positioning core hole.

[0014] Further, the fixing assembly further comprises a fixing sleeve and a fixing member, the fixing sleeve is arranged on the positioning member, the positioning member is provided with a fixing mounting hole, and one end of the fixing member penetrates the fixing sleeve and extends into the fixing mounting hole.

[0015] Further, the fixing assembly further comprises a rotary connecting head and a Pail connecting head, the Pail connecting head is arranged on the positioning member, one end of the positioning mandrel is arranged on the positioning member through the Pail connecting head, and the rotary connecting head is arranged at the other end of the positioning mandrel.

[0016] Further, the fixing assembly further comprises an anti-rotation plate, and a slot is arranged on the anti-rotation plate, the slot is located in the middle of one side of the anti-rotation plate, and the anti-rotation plate is clamped on the outer side of the rotary connecting head through the slot.

[0017] The application has the following beneficial effects:

[0018] The application sets the clamping assembly comprising the clamping piece, the bearing mechanism and the plurality of hydraulic driving pieces, and the fixing assembly comprising the positioning piece, the positioning mandrel and the locking piece, so as to realize the automatic clamping operation, improve the machining efficiency and the machining quality of the product, and at the same time, the plurality of hydraulic driving pieces can synchronously drive the clamping piece to clamp the workpiece, thereby ensuring the fitting of the workpiece arc surface and the jig arc surface, and improving the stability and reliability of the clamping. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0020] Figure 1 A three-dimensional structural schematic diagram of an automatic clamping jig provided for an embodiment of the application;

[0021] Figure 2 A structural schematic diagram of the automatic clamping jig provided for an embodiment of the application at a first angle;

[0022] Figure 3 A three-dimensional structural schematic diagram of the automatic clamping jig provided for an embodiment of the application at a second angle; Figure 2 A plan view structural schematic diagram in the A-A direction;

[0023] Figure 4 A three-dimensional structural schematic diagram of a fixing assembly provided for an embodiment of the application;

[0024] Figure 5 A top view of the fixing assembly provided for an embodiment of the application;

[0025] Figure 6 A three-dimensional structural schematic diagram of the fixing assembly provided for an embodiment of the application at a first angle; Figure 5 A plan view structural schematic diagram in the F-F direction;

[0026] Figure 7 A three-dimensional structural schematic diagram of the clamping assembly provided for an embodiment of the application at a first angle;

[0027] Figure 8 A three-dimensional structural schematic diagram of the clamping assembly provided for an embodiment of the application at a second angle;

[0028] Figure 9 The top view of the clamping assembly provided by the embodiment of the present application is shown in the figure;

[0029] Figure 10 The top view of the L-shaped bearing plate provided by the embodiment of the present application is shown in the figure; Figure 9 The schematic diagram of the planar structure in A-A direction is shown in the figure;

[0030] Figure 11 The top view of the positioning plate provided by the embodiment of the present application is shown in the figure;

[0031] Figure 12 The top view of the positioning plate provided by the embodiment of the present application is shown in the figure; Figure 11 The schematic diagram of the planar structure in A-A direction is shown in the figure;

[0032] Figure 13 The schematic diagram of the structure of the positioning core provided by the embodiment of the present application is shown in the figure;

[0033] Figure 14 The top view of the positioning core provided by the embodiment of the present application is shown in the figure;

[0034] Figure 15 The schematic diagram of the structure of the anti-rotation plate provided by the embodiment of the present application is shown in the figure;

[0035] Figure 16 The top view of the positioning core provided by the embodiment of the present application is shown in the figure;

[0036] Figure 17 The top view of the positioning plate provided by the embodiment of the present application is shown in the figure; Figure 16 The schematic diagram of the planar structure in A-A direction is shown in the figure;

[0037] In the figure, the corresponding figure marks are as follows: 11-clamping piece; 12-hydraulic driving piece; 13-L-shaped bearing plate; 14-bearing cavity; 15-positioning plate; 151-positioning pin hole; 16-positioning sleeve; 21-positioning piece; 211-positioning hole; 212-fixed mounting hole; 213-positioning core hole; 22-positioning core; 23-locking piece; 24-fixed sleeve; 25-rotary connection head; 26-Pal connection head; 27-anti-rotation plate; 271-slotted; 272-U-shaped groove. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0039] It should be noted that in the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] The embodiments will be described below with reference to the accompanying drawings, which do not limit the disclosure recorded in the claims in any way.

[0041] Please refer to Figures 1-17 , the following will be combined Figures 1-17 to explain in detail the automatic clamping jig provided by the embodiments of the present application.

[0042] The embodiments of the present application provide an automatic clamping jig, as shown in Figures 1-17 , specifically, the automatic clamping jig comprises a clamping assembly and a fixing assembly.

[0043] Among them, the clamping assembly comprises a clamping piece 11, a bearing mechanism and a plurality of hydraulic driving pieces 12, the plurality of hydraulic driving pieces 12 and the clamping piece 11 are arranged on the bearing mechanism, and the driving end of the plurality of hydraulic driving pieces 12 is connected with the clamping piece 11 through a hinge mechanism; the fixing assembly comprises a positioning piece 21, a positioning mandrel 22 and a locking piece 23, one end of the positioning mandrel 22 is arranged on the positioning piece 21, the positioning piece 21 is provided with a positioning hole 211, the bearing mechanism is provided with a positioning matching hole, the positioning hole 211 and the positioning matching hole are arranged in alignment, and the locking piece 23 penetrates the positioning hole 211 and the positioning matching hole to lock the positioning piece 21 and the bearing mechanism.

[0044] In the embodiments of the present application, the automatic clamping jig is used to be connected with the five-axis workbench, so as to move the automatic clamping jig by the five-axis workbench, and then the position adjustment of the automatic clamping jig can be realized. In some specific embodiments, the clamping piece 11 is used to clamp the workpiece, and the clamping piece 11 can be a pressing plate, for example. The hydraulic driving piece 12 is used to drive the clamping piece 11 to clamp the workpiece by hydraulic pressure, and the hydraulic driving piece 12 can be a lever oil cylinder, for example. Then, by arranging the hydraulic driving piece 12, the clamping piece 11 is driven to clamp the workpiece by the hydraulic driving piece 12, so as to realize the automatic clamping operation. In some embodiments, the plurality of hydraulic driving pieces 12 can synchronously drive the clamping piece 11 to clamp the workpiece, so as to ensure the fit between the workpiece arc surface and the jig arc surface, and improve the stability and reliability of clamping.

[0045] In a specific embodiment, the positioning member 21 can be a bottom plate, and the locking member 23 is used to lock the clamping assembly and the fixing assembly. Specifically, the locking member 23 can be a ball lock. Then, the positioning member 21 and the bearing mechanism can be locked by penetrating the locking member 23 through the positioning hole 211 and the positioning matching hole, so that the locking operation of the clamping assembly and the fixing assembly can be realized.

[0046] In some specific embodiments, a plurality of screw holes are further arranged on the L-shaped bearing plate 13. After the locking member 23 locks the positioning member 21 and the bearing mechanism, the positioning member 21 and the bearing mechanism are fixed on the five-axis workbench together.

[0047] In an alternative embodiment, as shown in Figure 1 、 Figure 3 、 Figure 10 The bearing mechanism includes an L-shaped bearing plate 13, and the L-shaped bearing plate 13 is provided with a plurality of bearing cavities 14. The bearing cavities 14 are arranged one by one corresponding to the hydraulic driving members 12, and each hydraulic driving member 12 is located in the corresponding bearing cavity 14.

[0048] In the embodiments of the present application, the L-shaped bearing plate 13 can be used as a bearing device of the clamping member 11 and the plurality of hydraulic driving members 12. Specifically, the L-shaped bearing plate 13 is provided with a plurality of bearing cavities 14. The number of the bearing cavities 14 is equal to the number of the hydraulic driving members 12, and the size of the bearing cavities 14 matches the size of the hydraulic driving members 12. Then, the hydraulic driving members 12 can be placed in the bearing cavities 14, so as to improve the stability of the hydraulic driving members 12.

[0049] In a specific embodiment, the number of the bearing cavities 14 and the number of the hydraulic driving members 12 can be 6, 8 or 10, etc. Preferably, as shown in Figure 2 The number of the bearing cavities 14 and the number of the hydraulic driving members 12 are both 8. Then, the eight hydraulic driving members 12 can simultaneously drive the clamping member 11 to clamp the workpiece through the hinge mechanism, so as to ensure that the arc surface of the workpiece matches the arc surface of the jig, and improve the stability and reliability of clamping.

[0050] In some embodiments, the bearing cavities 14 are rectangular structures, and the bearing cavities 14 and the hydraulic driving members 12 can be fixed by screws.

[0051] In actual application, the L-shaped bearing plate 13 is provided with an oil path. Then, the oil path in the L-shaped bearing plate 13 can form a one-way oil path with the oil path in the hydraulic driving member 12 and the positioning core shaft 22, so as to realize the supply or use of the oil path, etc.

[0052] In an alternative embodiment, as shown in Figure 1 、 Figure 2 ,Figure 3 、 Figure 9 、 Figure 10 、 Figure 13 and Figure 14 As shown in the figure, the L-shaped bearing plate 13 is provided with a positioning plate 15, the positioning plate 15 is provided with a positioning pin hole 151, and the positioning plate 15 is arranged on the L-shaped bearing plate 13 through a positioning pin, one end of the positioning pin penetrates through the positioning pin hole 151 and extends into the L-shaped bearing plate 13.

[0053] In the embodiment of the present application, the positioning pin can be a screw, and then the positioning plate 15 can be positioned on the L-shaped bearing plate 13 by using the screw, and then the workpiece can be positioned by using the positioning plate 15 to ensure the stability of the workpiece during machining. In a specific embodiment, the positioning plate 15 is provided with a profiling cavity and a avoiding groove, the profiling cavity is used for positioning the workpiece, and the avoiding groove is arranged at one side edge of the positioning plate 15.

[0054] In a specific embodiment, the profiling cavity is a cavity designed according to the shape of the workpiece, and then the workpiece can be positioned by using the profiling cavity. In some embodiments, the positioning plate 15 is also provided with an avoiding groove, wherein the avoiding groove is arranged at one side edge of the positioning plate 15, and then the avoiding groove is arranged at one side edge of the positioning plate 15 to facilitate the robot to grasp the workpiece, so that the positioning plate 15 can be prevented from blocking the robot to grasp the workpiece.

[0055] In an optional embodiment, the clamping piece 11 includes a plurality of clamping pieces 11, and each clamping piece 11 is arranged corresponding to the hydraulic drive 12. Each clamping piece 11 is connected to the driving end of the corresponding hydraulic drive 12 through a hinge mechanism.

[0056] In the embodiment of the present application, the number of clamping pieces 11 is equal to the number of hydraulic drives 12. Specifically, the number of clamping pieces 11 and the number of hydraulic drives 12 are both 8, wherein one clamping piece 11 is arranged on one hydraulic drive 12, and each hydraulic drive 12 and each clamping piece 11 are connected through a hinge mechanism. Therefore, the hydraulic drive 12 can drive the clamping piece 11 to clamp or loosen the workpiece through the hinge mechanism. Further, the eight hydraulic drives 12 can simultaneously drive the eight clamping pieces 11, so as to ensure the fitting of the workpiece curved surface and the jig curved surface, and improve the stability and reliability of clamping.

[0057] In an optional embodiment, as shown in Figure 3 and Figure 7As shown, the clamping assembly further comprises a positioning sleeve 16, wherein the positioning sleeve 16 is located on the L-shaped bearing plate 13, the positioning sleeve 16 is provided with a positioning fixing hole, the positioning fixing hole, the positioning matching hole and the positioning hole 211 are arranged in alignment, and the locking member 23 penetrates the positioning fixing hole, the positioning matching hole and the positioning hole 211 in sequence.

[0058] In the embodiment of the present application, the positioning sleeve 16 is arranged on the L-shaped bearing plate 13, so as to improve the locking degree of the locking member 23 to the L-shaped bearing plate 13 and the positioning member 21. In actual application, for example, Figure 7 As shown, the number of the positioning sleeve 16 can be 2, wherein the two positioning sleeves 16 are respectively located at the two ends of the bottom of the L-shaped bearing plate 13, so as to improve the stability and reliability of the automatic clamping jig.

[0059] In an optional embodiment, Figure 3 As shown, the fixing assembly further comprises a fixing sleeve 24 and a fixing member, the fixing sleeve 24 is located on the positioning member 21, the positioning member 21 is provided with a fixing mounting hole 212, one end of the fixing member penetrates the fixing sleeve 24 and extends into the fixing mounting hole 212, specifically, the number of the fixing sleeve 24 can be 2, and the fixing member can be a screw, so that the positioning member 21 is connected with other devices by arranging the fixing sleeve 24.

[0060] In an optional embodiment, as shown in the figure, Figures 4-6 As shown, the positioning member 21 is provided with a positioning core hole 213, the positioning core hole 213 is arranged at the middle part of the positioning member 21, and the periphery of the positioning hole 211 is provided with a plurality of screw holes, and the plurality of screw holes are uniformly distributed around the positioning core hole 213.

[0061] In the embodiment of the present application, one end of the positioning core shaft 22 is arranged in the positioning core hole 213, so that the one end of the positioning core shaft 22 is fixed through the positioning core hole 213, and in a specific embodiment, as shown in the figure, Figure 5 As shown, the periphery of the positioning hole 211 is provided with 4 screw holes, so that the screw can be inserted into the screw hole, and the connection between the positioning core shaft 22 and the positioning member 21 can be realized.

[0062] In a specific embodiment, as shown in the figure, Figures 1-6 As shown, the fixing assembly further comprises a rotary joint 25 and a Par joint 26, the Par joint 26 is arranged on the positioning member 21, one end of the positioning core shaft 22 is arranged on the positioning member 21 through the Par joint 26, and the other end of the positioning core shaft 22 is arranged on the positioning member 21 through the Par joint 26.

[0063] In the embodiments of the present application, at least part of the structure of the Pall joint 26 is located in the positioning core hole 213 of the positioning member 21, the rest of the structure of the Pall joint 26 is located in the L-shaped bearing plate 13, and one end of the positioning core shaft 22 is inserted into the Pall joint 26 in the positioning member 21 to fix one end of the positioning core shaft 22. In some embodiments, a threaded structure is arranged on the outer side wall of one end of the positioning core shaft 22, which is matched with a threaded matching part in the Pall joint 26 to enhance the connection stability therebetween.

[0064] Further, the rotary joint 25 is arranged at the other end of the positioning core shaft 22, specifically, the other end of the positioning core shaft 22 is inserted into the rotary joint 25, and then the rotary joint 25 can be connected with the oil channel in the positioning core shaft 22. In some embodiments, the rotary joint 25 is also used to connect with the hydraulic cylinder to achieve the hydraulic driving of the hydraulic driving member 12, that is, the oil of the hydraulic cylinder can be provided to the hydraulic driving member 12 through the oil channel in the positioning core shaft 22 and the oil channel in the L-shaped bearing plate 13, so as to drive the clamping member 11 by the hydraulic driving member 12. Further, the hydraulic driving member 12 does not need to be externally connected with an oil pipe to achieve the driving operation, so that the overall size of the automatic clamping jig can be reduced, the weight of the automatic clamping jig can be reduced, and the oil pipe winding phenomenon can be avoided when the five-axis workbench rotates.

[0065] In an alternative embodiment, as shown in Figure 15 The fixing assembly further includes an anti-rotation plate 27, and the anti-rotation plate 27 is provided with a slot 271 located in the middle of one side of the anti-rotation plate 27. The anti-rotation plate 27 is clamped on the outer side of the rotary joint 25 through the slot 271.

[0066] In the embodiments of the present application, the anti-rotation plate 27 is used to prevent the rotary joint 25 from rotating. In a specific embodiment, a plurality of U-shaped grooves 272 are further arranged at the edge of the anti-rotation plate 27. Specifically, four U-shaped grooves 272 are symmetrically arranged at the two sides of the anti-rotation plate 27, two of which are located at the left side of the anti-rotation plate 27, and the other two are located at the right side of the anti-rotation plate 27. In some embodiments, a screw can be inserted through the U-shaped groove 272 and extended to the five-axis workbench to fix the anti-rotation plate 27 on the five-axis workbench, so as to avoid the oil leakage or falling of the anti-rotation plate 27 due to loosening during the work process.

[0067] In combination with the specific structure of the automatic clamping jig described above, the specific working principle of the automatic clamping jig is described below.

[0068] Specifically, after the lever oil cylinder is connected to the air source, the control switch of the lever oil cylinder can be turned to the first position for driving the clamping piece 11 to clamp, at this time, the piston rod in the lever oil cylinder moves towards the direction for driving the clamping piece 11 to clamp the workpiece, and then the torque of the lever oil cylinder can be transmitted to the clamping piece 11 through the hinge mechanism, so that the clamping piece 11 clamps the workpiece, thereby realizing automatic clamping operation on the workpiece.

[0069] Further, the control switch of the lever oil cylinder can be turned to the second position for driving the clamping piece 11 to loosen, at this time, the piston rod in the lever oil cylinder moves towards the direction for driving the clamping piece 11 to loosen the workpiece, and then the torque of the lever oil cylinder can be transmitted to the clamping piece 11 through the hinge mechanism, so that the clamping piece 11 loosens the workpiece, thereby realizing automatic loosening operation on the workpiece.

[0070] The above embodiments of the present application have the following beneficial effects:

[0071] The present application sets the clamping assembly including the clamping piece, the bearing mechanism and the plurality of hydraulic driving pieces, and the fixing assembly including the positioning piece, the positioning mandrel and the locking piece, so as to realize automatic clamping operation, improve the processing efficiency and the processing quality of the product, at the same time, the plurality of hydraulic driving pieces can drive the clamping piece to clamp the workpiece, thereby ensuring the fitting of the workpiece arc surface and the jig arc surface, improving the stability and reliability of clamping.

[0072] The structure shown in the embodiment only relates to part of the structure of the present application scheme, and does not constitute a limitation on the equipment to which the present application scheme is applied. The specific equipment can include more or fewer components than shown, or combine certain components, or have a different arrangement of components. It should be understood that the methods, devices, etc. disclosed in the embodiment can be implemented in other ways.

[0073] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope of the claims.

Claims

1. An automatic clamping jig characterized by comprising: The clamping assembly and the fixing assembly are included; The clamping assembly includes a clamping piece (11), a bearing mechanism and a plurality of hydraulic driving pieces (12), the plurality of hydraulic driving pieces (12) and the clamping piece (11) are arranged on the bearing mechanism, and the driving ends of the plurality of hydraulic driving pieces (12) are connected with the clamping piece (11) through a hinge mechanism; The fixing assembly includes a positioning piece (21), a positioning mandrel (22) and a locking piece (23), one end of the positioning mandrel (22) is arranged on the positioning piece (21), the positioning piece (21) is provided with a positioning hole (211), the bearing mechanism is provided with a positioning matching hole, the positioning hole (211) is arranged in alignment with the positioning matching hole, and the locking piece (23) penetrates the positioning hole (211) and the positioning matching hole to lock the positioning piece (21) and the bearing mechanism.

2. The automatic clamping jig according to claim 1, wherein The bearing mechanism includes an L-shaped bearing plate (13), the L-shaped bearing plate (13) is provided with a plurality of bearing cavities (14), the bearing cavities (14) are arranged in one-to-one correspondence with the hydraulic driving pieces (12), and each hydraulic driving piece (12) is located in the corresponding bearing cavity (14).

3. The automatic clamping jig according to claim 2, wherein The L-shaped bearing plate (13) is provided with a positioning plate (15), the positioning plate (15) is provided with a positioning pin hole (151), and the positioning plate (15) is arranged on the L-shaped bearing plate (13) through a positioning pin, one end of the positioning pin penetrates the positioning pin hole (151) and extends into the L-shaped bearing plate (13).

4. The automatic clamping jig according to claim 3, wherein The positioning plate (15) is provided with a profiling cavity and a avoiding groove, the profiling cavity is used for positioning a workpiece, and the avoiding groove is arranged at one side edge of the positioning plate (15).

5. The automatic clamping jig according to claim 1, wherein The clamping piece (11) includes a plurality of clamping pieces (11), the clamping pieces (11) are arranged in one-to-one correspondence with the hydraulic driving pieces (12), each clamping piece (11) is located on the corresponding hydraulic driving piece (12), and each clamping piece (11) is connected with the driving end of the corresponding hydraulic driving piece (12) through the hinge mechanism.

6. The automatic clamping jig according to claim 2, wherein The clamping assembly further includes a positioning sleeve (16), the positioning sleeve (16) is located on the L-shaped bearing plate (13), the positioning sleeve (16) is provided with a positioning fixing hole, the positioning fixing hole, the positioning matching hole and the positioning hole (211) are arranged in alignment, and the locking piece (23) penetrates the positioning fixing hole, the positioning matching hole and the positioning hole (211) in sequence.

7. The automatic clamping jig according to claim 1, wherein The positioning piece (21) is provided with a positioning core hole (213), the positioning core hole (213) is arranged in the middle of the positioning piece (21), the periphery of the positioning hole (211) is provided with a plurality of screw holes, and the plurality of screw holes are uniformly distributed around the positioning core hole (213).

8. The automatic clamping jig according to claim 7, wherein The fixing assembly further comprises a fixing sleeve (24) and a fixing piece, the fixing sleeve (24) is located on the positioning piece (21), the positioning piece (21) is provided with a fixing mounting hole (212), one end of the fixing piece penetrates through the fixing sleeve (24) and extends into the fixing mounting hole (212).

9. The automatic clamping jig according to claim 1, wherein The fixing assembly further comprises a rotating connecting head (25) and a Pahl connecting head (26), the Pahl connecting head (26) is arranged on the positioning piece (21), one end of the positioning core shaft (22) is arranged on the positioning piece (21) through the Pahl connecting head (26), and the rotating connecting head (25) is arranged at the other end of the positioning core shaft (22).

10. The automatic clamping jig according to claim 9, wherein The fixing assembly further comprises an anti-rotation plate (27), the anti-rotation plate (27) is provided with a slot (271), the slot (271) is located at the middle of one side of the anti-rotation plate (27), and the anti-rotation plate (27) is clamped on the outer side of the rotating connecting head (25) through the slot (271).

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