Clamping structure and method for special-shaped metal part

Abstract

The invention discloses a clamping structure and method for a special-shaped metal piece, and relates to the technical field of metal piece clamping. According to the clamping structure and method for the special-shaped metal piece, when the metal piece is clamped, if the metal piece is a regular metal piece, a worker directly extrudes the two deflection clamping plates towards the metal piece, the clamping plate is passively deflected backwards, an extrusion spring rod drives the clamping plate to effectively clamp the metal piece, and the clamping effect is good. If the metal piece is of a special-shaped structure, after the clamping plate preliminarily clamps the metal piece, a third hydraulic cylinder is adjusted to drive a guide rail to deflect to the outer side of the metal piece, then a second hydraulic cylinder is adjusted to drive a lock frame to move to make contact with the outer side wall of the metal piece, and a rotating motor is started; and the rotating motor drives the lock frames to be finely adjusted, so that interaction force exists between the lock frames and the metal piece, the lock frames in the four directions are matched with the two clamping plates to achieve clamping of the special-shaped metal piece, the clamping firmness is improved, and the stability effect in the machining process of the special-shaped metal piece is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of metal part clamping, and in particular to a clamping structure and method for special-shaped metal parts. Background Art

[0002] Metal parts refer to metal blocks, metal bars, metal tubes, etc. of various specifications and shapes made of metal materials. When processing metal parts, they need to be clamped by a clamping structure.

[0003] During the use of the existing metal part clamping structure, large metal parts are generally clamped by a large clamping structure. However, for some smaller metal parts, in order to facilitate their processing, workers generally hold them with a small clamping structure. The design of the small clamping structure is relatively simple and can only clamp some metal parts with regular shapes. The clamping effect is poor for some special metal parts, and there is a risk of falling during the processing, which reduces the use value of the clamping structure. Summary of the invention

[0004] The present invention discloses a clamping structure for special-shaped metal parts, aiming to solve the technical problem that during the use of the existing metal part clamping structure, large-volume metal parts are generally clamped by a large clamping structure, but for some small-volume metal parts, in order to facilitate their processing, workers generally hold a small clamping structure to clamp them. The small clamping structure is relatively simple in design and can only clamp some metal parts with regular shapes. The clamping effect on some special-shaped metal parts is poor, and there is a technical problem that there is a risk of falling during the processing.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A clamping structure for special-shaped metal parts, including a shaft rod, two deflection clamps are sleeved on the shaft rod, and a multi-kinetic clamping assembly is provided on the opposite side of the two deflection clamps, the multi-functional clamping assembly includes a semi-cylindrical frame, and the semi-cylindrical frame is fixedly connected to one side of the deflection clamp, the side walls of the semi-cylindrical frame at both ends are provided with rotation grooves, and the bottom inner walls of the two rotation grooves are fixedly connected to fixed shafts, the outer side walls of the two fixed shafts are sleeved with rotating sleeves, the outer side walls of the rotating sleeves are fixedly connected to guide rails, the guide rails are slidably connected with guide sliders, and the top of the guide slider is fixedly connected to a fixed plate, the top of the fixed plate is fixedly connected to a rotating motor, and the output shaft of the rotating motor is fixedly connected to a locking frame through a coupling.

[0007] By providing a multifunctional clamping assembly, when clamping metal parts, if the metal parts are regular metal parts, the staff directly squeezes the two deflection clamps toward the metal parts, and the clamping plates passively deflect backwards, and the extrusion spring rod drives the clamping plates to effectively clamp the metal parts. If the metal parts are special-shaped structures, the clamping plates initially clamp them, and then adjust the hydraulic cylinder three to drive the guide rail to deflect to the outside of the metal parts, and then adjust the hydraulic cylinder two to drive the locking frame to move to contact the outer wall of the metal parts, start the rotating motor, and drive the locking frame to perform fine-tuning so that there is an interaction force between the locking frame and the metal parts. The locking frames in four directions cooperate with the two clamping plates to achieve the clamping of special-shaped metal parts, thereby improving the clamping firmness and ensuring its stability during the processing.

[0008] In a preferred embodiment, the semi-cylindrical frame is fixedly connected to a fixed block near the outer wall of the guide rail, and the side of the fixed block facing the guide rail is connected to hydraulic cylinder three via a hinge, and the output end of hydraulic cylinder three is connected to the outer wall of the guide rail via a hinge.

[0009] In a preferred solution, a connecting rod is fixedly connected to the top of the guide rail, and a side of the connecting rod facing the guide slider is hingedly connected to hydraulic cylinder 2, and an output end of hydraulic cylinder 2 is hingedly connected to one side of the guide slider.

[0010] In a preferred solution, the outer wall of the semi-cylindrical frame located between the two guide rails is connected to two clamping plates through a hinge, and the two clamping plates are symmetrically distributed around the center point of the semi-cylindrical frame, and the outer walls of the semi-cylindrical frame close to the two clamping plates are fixedly connected to rear support plates, and extrusion spring rods are fixedly connected to the rear support plates and adjacent clamping plates at equal distances.

[0011] In a preferred embodiment, the outer wall of the semi-cylindrical frame located between the rear support plate and the clamping plate is provided with an operating groove, and the inner wall of the operating groove is fixedly connected to a hydraulic cylinder four, and the output end of the hydraulic cylinder four is fixedly connected to a positioning block, and the positioning block is located between the rear support plate and the clamping plate.

[0012] In a preferred solution, one end of the two deflection frame plates is fixedly connected to a rotating rod, and the ends of the two rotating rods are fixedly connected to a bracelet, and a positioning assembly is provided on the top of the shaft rod, and the positioning assembly includes a positioning frame, and the positioning frame is fixedly connected to the top of the shaft rod.

[0013] In a preferred solution, the tops of the two rotating rods are fixedly connected with matching blocks, and the positioning frames are fixedly connected with hydraulic cylinders five on the opposite sides close to the two matching blocks, the output ends of the two hydraulic cylinders five are fixedly connected with push frames, the interior of the push frames is fixedly connected with a pressure sensor, the push frames are annularly distributed with telescopic connecting rods located on the outside of the pressure sensors, one end of the multiple telescopic connecting rods is fixedly connected with the same positioning plate, and the positioning plate is in contact with the pressure sensor.

[0014] By providing a positioning component, after the worker holds the clamping structure to clamp the metal part, the worker is always in a state of physical output during the processing of the metal part. In order to reduce the labor expenditure of the worker, the hydraulic cylinder five is adjusted to drive the positioning plate to move, so that the positioning plate squeezes the deflected matching block, and the interaction force between the two is monitored in real time through the pressure sensor to ensure that the worker only needs to hold the clamping structure without exerting force, thereby improving the use value of the clamping structure.

[0015] In a preferred solution, a docking installation assembly is provided on the outer side of the shaft rod, and the docking installation assembly includes a mounting ring frame, the mounting ring frame surrounds the outer side of the shaft rod, the inner side wall of the mounting ring frame is fixedly connected with an annular limiting rail, the inner side of the annular limiting rail is slidably connected with a driven rotating gear, the outer side wall of the mounting ring frame located at the top is fixedly connected with a motor frame, one side of the motor frame is fixedly connected with a driving motor, the output shaft of the driving motor is fixedly connected with the driving shaft through a coupling, one end of the driving shaft is fixedly connected with a driving gear disc, and the driving gear disc and the driven rotating gear are meshed.

[0016] By providing a docking installation component, if the metal part needs to be processed on multiple sides and the time required is long, the clamping structure is installed on the docking installation component, and the metal part on the clamping structure is driven to rotate by starting the drive motor. Mechanical adjustment replaces manual adjustment, thereby improving work efficiency and the accuracy of metal part processing.

[0017] In a preferred solution, the inner side wall below the driven gear is fixedly connected to a docking sleeve, and the bottom of the shaft is fixedly connected to a docking column, the docking column is inserted into the interior of the docking sleeve, the outer side wall of the docking sleeve is fixedly connected to an external frame, the inner side wall of the external frame is fixedly connected to two hydraulic cylinders one, the output ends of the two hydraulic cylinders one are fixedly connected to embedded rods, the docking sleeve and the docking column are provided with embedded grooves, and the embedded rods are inserted into the corresponding embedded grooves.

[0018] A method for clamping a special-shaped metal part, using the clamping structure for a special-shaped metal part as described above, comprises the following steps:

[0019] Step 1: When clamping a metal part, if the metal part is a regular metal part, the staff directly squeezes the two deflection clamps toward the metal part, so that the clamping plate is passively deflected backward, and the squeezing spring rod drives the clamping plate to effectively clamp the metal part;

[0020] Step 2: If the metal part is a special-shaped structure, after the clamping plate initially clamps it, the hydraulic cylinder 3 is adjusted to drive the guide rail to deflect to the outside of the metal part, and then the hydraulic cylinder 2 is adjusted to drive the lock frame to move to contact the outer wall of the metal part;

[0021] Step 3: Then start the rotating motor, which drives the lock frame to make fine adjustments so that there is interaction force between the lock frame and the metal part. The lock frame in four directions cooperates with the two clamping plates to clamp the special-shaped metal parts.

[0022] From the above, it can be seen that the clamping structure of a special-shaped metal part provided by the present invention has the following characteristics: when clamping the metal part, if the metal part is a regular metal part, the staff directly squeezes the two deflection clamps toward the metal part, and the clamping plate passively deflects backward, and the extrusion spring rod drives the clamping plate to effectively clamp the metal part. If the metal part is a special-shaped structure, after the clamping plate initially clamps it, the hydraulic cylinder three is adjusted to drive the guide rail to deflect to the outside of the metal part, and then the hydraulic cylinder two is adjusted to drive the locking frame to move to contact the outer wall of the metal part, and the rotating motor is started. The rotating motor drives the locking frame to perform fine-tuning so that there is an interaction force between the locking frame and the metal part. The locking frames in four directions cooperate with the two clamping plates to realize the clamping of special-shaped metal parts, improve the clamping firmness, and ensure the stability during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of the overall structure of a clamping structure for special-shaped metal parts.

[0024] Figure 2 The figure is a top view of the overall structure of a clamping structure for special-shaped metal parts proposed by the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of a multifunctional clamping assembly of a clamping structure for special-shaped metal parts proposed by the present invention.

[0026] Figure 4 A cross-sectional view of a semi-cylindrical frame structure of a clamping structure for special-shaped metal parts proposed by the present invention.

[0027] Figure 5 This is a schematic diagram of the positioning component structure of a clamping structure for a special-shaped metal part proposed by the present invention.

[0028] Figure 6 This is a disassembled view of the positioning plate and the pushing frame structure of the clamping structure of the special-shaped metal part proposed by the present invention.

[0029] Figure 7 This is a schematic diagram of the docking installation assembly structure of a clamping structure for special-shaped metal parts proposed by the present invention.

[0030] In the figure: 1, shaft; 2, hand ring; 3, docking installation assembly; 301, mounting ring frame; 302, driven gear; 303, driving gear plate; 304, driving shaft; 305, driving motor; 306, motor frame; 307, docking column; 308, hydraulic cylinder 1; 309, embedded rod; 310, external frame; 311, docking tube; 312, annular limit rail; 4, deflection clamp; 5, rotating rod; 6, multifunctional clamping assembly; 601, semi-cylindrical frame; 602, guide rail; 603, rotating groove; 604, extrusion spring rod; 605, rear abutment plate; 606, hydraulic cylinder two; 607, hydraulic cylinder three; 608, rotating motor; 609, fixed plate; 610, locking frame; 611, clamping plate; 612, guide slide block; 613, connecting rod; 614, fixed block; 615, hydraulic cylinder four; 616, rotating sleeve; 617, fixed shaft; 618, positioning round block; 7, positioning assembly; 701, positioning frame; 702, matching block; 703, pushing frame; 704, hydraulic cylinder five; 705, pressure sensor; 706, telescopic connecting rod; 707, positioning plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] The clamping structure of a special-shaped metal part disclosed in the present invention is mainly applied to the existing metal part clamping structure. During use, for metal parts with larger volumes, they are generally clamped by means of a large clamping structure. However, for some metal parts with smaller volumes, in order to facilitate their processing, workers generally hold them with a small clamping structure. The design of the small clamping structure is relatively simple and can only clamp some metal parts with regular shapes. The clamping effect is poor for some special-shaped metal parts, and there is a risk of them falling during processing.

[0033] Reference Figure 1-Figure 7A clamping structure for special-shaped metal parts, including a shaft rod 1, on which two deflection clamps 4 are sleeved, and the opposite sides of the two deflection clamps 4 are provided with a multi-kinetic clamping component, the multi-functional clamping component 6 includes a semi-cylindrical frame 601, and the semi-cylindrical frame 601 is fixedly connected to one side of the deflection clamp 4, the side walls of the semi-cylindrical frame 601 at both ends are provided with a rotating groove 603, and the bottom inner walls of the two rotating grooves 603 are fixedly connected with a fixed shaft 617, the outer side walls of the two fixed shafts 617 are sleeved with a rotating sleeve 616, the outer side wall of the rotating sleeve 616 is fixedly connected with a guide rail 602, the guide rail 602 is slidably connected with a guide slider 612, and the top of the guide slider 612 is fixedly connected with a fixed plate 609, the top of the fixed plate 609 is fixedly connected with a rotating motor 608, and the output shaft of the rotating motor 608 is fixedly connected with a locking frame 610 through a coupling.

[0034] In a specific application scenario, when clamping a metal part, if the metal part is a regular metal part, the staff will directly squeeze the two deflection clamps 4 toward the metal part, and the clamping plate 611 will passively deflect backward, and the extrusion spring rod 604 will drive the clamping plate 611 to effectively clamp the metal part. If the metal part is a special-shaped structure, the clamping plate 611 will initially clamp it, and then adjust the hydraulic cylinder three 607 to drive the guide rail 602 to deflect to the outside of the metal part, and then adjust the hydraulic cylinder two 606 to drive the locking frame 610 to move to contact the outer wall of the metal part, start the rotating motor 608, and the rotating motor 608 will drive the locking frame 610 to perform fine-tuning so that there is an interaction force between the locking frame 610 and the metal part. The locking frame 610 in four directions cooperates with the two clamping plates 611 to realize the clamping of special-shaped metal parts, improve the clamping firmness, and ensure its stability during the processing.

[0035] Specifically, after the extrusion spring rod 604 drives the clamping plate 611 to clamp the metal part, the adjustment hydraulic cylinder 4 615 drives the positioning block 618 to be pushed out and contact the clamping plate 611. The clamping plate 611 is limited by the positioning block 618 to prevent it from deviating and causing unstable clamping of the metal part.

[0036] Reference Figure 1-Figure 4In a preferred embodiment, a fixing block 614 is fixedly connected to the outer wall of the semi-cylindrical frame 601 close to the guide rail 602, and a hydraulic cylinder 3 607 is connected to the side of the fixing block 614 facing the guide rail 602 through a hinge, and the output end of the hydraulic cylinder 3 607 is connected to the outer wall of the guide rail 602 through a hinge, and a connecting rod 613 is fixedly connected to the top of the guide rail 602, and a hydraulic cylinder 2 606 is connected to the side of the guide slider 612 through a hinge, and the output end of the hydraulic cylinder 2 606 is connected to one side of the guide slider 612 through a hinge, and the outer wall of the semi-cylindrical frame 601 located between the two guide rails 602 is connected to the outer wall of the semi-cylindrical frame 601 through a hinge. Two clamping plates 611 are connected by hinges, and the two clamping plates 611 are symmetrically distributed around the center point of the semi-cylindrical frame 601. The outer walls of the semi-cylindrical frame 601 close to the two clamping plates 611 are fixedly connected with rear support plates 605. Extrusion spring rods 604 are fixedly connected at equal distances between the rear support plates 605 and the adjacent clamping plates 611. An operating groove is provided on the outer wall of the semi-cylindrical frame 601 located between the rear support plate 605 and the clamping plates 611, and a hydraulic cylinder four 615 is fixedly connected to the inner wall of the operating groove. A positioning block 618 is fixedly connected to the output end of the hydraulic cylinder four 615. The positioning block 618 is located between the rear support plate 605 and the clamping plates 611.

[0037] Reference Figure 1 , Figure 5 and Figure 6 In a preferred embodiment, one end of the two deflection frame plates is fixedly connected to a rotating rod 5, and the ends of the two rotating rods 5 are fixedly connected to a bracelet 2, a positioning assembly 7 is provided at the top of the shaft rod 1, the positioning assembly 7 includes a positioning frame 701, the positioning frame 701 is fixedly connected to the top of the shaft rod 1, the tops of the two rotating rods 5 are fixedly connected to a matching block 702, and the positioning frame 701 is fixedly connected to the opposite side of the two matching blocks 702 with a hydraulic cylinder five 704, the output ends of the two hydraulic cylinders five 704 are fixedly connected to a push frame 703, the interior of the push frame 703 is fixedly connected to a pressure sensor 705, the push frame 703 is located outside the pressure sensor 705 and is annularly distributed with telescopic links 706, one end of the multiple telescopic links 706 is fixedly connected to the same positioning plate 707, the positioning plate 707 is in contact with the pressure sensor 705.

[0038] Specifically, after the worker holds the clamping structure to clamp the metal part, the worker is always in a state of physical output during the processing of the metal part. In order to reduce the labor expenditure of the worker, the hydraulic cylinder 704 is adjusted to drive the positioning plate 707 to move, so that the positioning plate 707 squeezes the deflected matching block 702, and the interaction force between the two is monitored in real time through the pressure sensor 705 to ensure that the worker only needs to hold the clamping structure and does not need to exert force, thereby improving the use value of the clamping structure.

[0039] Reference Figure 1 , Figure 2 and Figure 7 In a preferred embodiment, a docking installation component 3 is provided on the outer side of the shaft rod 1, and the docking installation component 3 includes a mounting ring frame 301, the mounting ring frame 301 surrounds the outer side of the shaft rod 1, the inner side wall of the mounting ring frame 301 is fixedly connected with an annular limiting rail 312, the inner side of the annular limiting rail 312 is slidably connected with a driven rotating gear 302, the outer side wall of the mounting ring frame 301 located at the top is fixedly connected with a motor frame 306, one side of the motor frame 306 is fixedly connected with a driving motor 305, the output shaft of the driving motor 305 is fixedly connected with a driving shaft 304 through a coupling, and one end of the driving shaft 304 is fixedly connected with The driving gear disc 303 is meshed with the driven gear 302, and the inner side wall of the driven gear 302 is fixedly connected with a docking sleeve 311, and the bottom of the shaft rod 1 is fixedly connected with a docking column 307, and the docking column 307 is inserted into the inside of the docking sleeve 311, and the outer side wall of the docking sleeve 311 is fixedly connected with an external frame 310, and the inner side wall of the external frame 310 is fixedly connected with two hydraulic cylinders 308, and the output ends of the two hydraulic cylinders 308 are fixedly connected with embedded rods 309, and embedded grooves are provided on the docking sleeve 311 and the docking column 307, and the embedded rods 309 are inserted into the corresponding embedded grooves.

[0040] It should be noted that if the metal part needs to be processed on multiple sides, which takes a long time, the clamping structure is installed on the docking installation component 3, and the metal part on the clamping structure is driven to rotate by starting the drive motor 305. Mechanical adjustment replaces manual adjustment to improve work efficiency and the accuracy of metal part processing.

[0041] A method for clamping a special-shaped metal part, using the clamping structure for a special-shaped metal part as described above, comprises the following steps:

[0042] Step 1: When clamping a metal part, if the metal part is a regular metal part, the staff directly squeezes the two deflection clamping plates 4 toward the metal part, so that the clamping plate 611 is passively deflected backward, and the squeezing spring rod 604 drives the clamping plate 611 to effectively clamp the metal part;

[0043] Step 2: If the metal piece is a special-shaped structure, after the clamping plate 611 initially clamps it, the hydraulic cylinder 3 607 is adjusted to drive the guide rail 602 to deflect to the outside of the metal piece, and then the hydraulic cylinder 2 606 is adjusted to drive the lock frame 610 to move to contact the outer wall of the metal piece;

[0044] Step 3: Then start the rotating motor 608, which drives the locking frame 610 to perform fine adjustment so that there is interaction force between the locking frame 610 and the metal piece. The locking frame 610 in four directions cooperates with the two clamping plates 611 to clamp the special-shaped metal piece.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A clamping structure for a special-shaped metal part, comprising a shaft (1), characterized in that: Two deflection clamps (4) are sleeved on the shaft (1), and a multi-energy clamping assembly is provided on opposite sides of the two deflection clamps (4). The multi-function clamping assembly (6) comprises a semi-cylindrical frame (601), and the semi-cylindrical frame (601) is fixedly connected to one side of the deflection clamp (4). The side walls of the semi-cylindrical frame (601) at both ends are provided with rotation grooves (603), and the bottom inner walls of the two rotation grooves (603) are fixedly connected to fixed shafts (617). The outer side walls of the fixed shaft (617) are sleeved with a rotating sleeve (616), the outer side walls of the rotating sleeve (616) are fixedly connected with a guide rail (602), a guide slider (612) is slidably connected to the guide rail (602), and the top of the guide slider (612) is fixedly connected with a fixed plate (609), the top of the fixed plate (609) is fixedly connected with a rotating motor (608), and the output shaft of the rotating motor (608) is fixedly connected with a lock frame (610) via a coupling.

2. A clamping structure for special-shaped metal parts according to claim 1, characterized in that: The semi-cylindrical frame (601) is fixedly connected to a fixing block (614) near the outer side wall of the guide rail (602), and the fixing block (614) is connected to a hydraulic cylinder three (607) via a hinge on one side facing the guide rail (602), and the output end of the hydraulic cylinder three (607) is connected to the outer side wall of the guide rail (602) via a hinge.

3. The clamping structure of a special-shaped metal part according to claim 2, characterized in that: The top of the guide rail (602) is fixedly connected with a connecting rod (613), and the side of the connecting rod (613) facing the guide slider (612) is connected to a second hydraulic cylinder (606) via a hinge, and the output end of the second hydraulic cylinder (606) is connected to one side of the guide slider (612) via a hinge.

4. The clamping structure of a special-shaped metal part according to claim 3, characterized in that: The outer side wall of the semi-cylindrical frame (601) located between the two guide rails (602) is connected to two clamping plates (611) via a hinge, and the two clamping plates (611) are symmetrically distributed around the center point of the semi-cylindrical frame (601), and the outer side walls of the semi-cylindrical frame (601) close to the two clamping plates (611) are fixedly connected to rear abutment plates (605), and extrusion spring rods (604) are fixedly connected between the rear abutment plates (605) and adjacent clamping plates (611) at equal distances.

5. The clamping structure of a special-shaped metal part according to claim 4, characterized in that: An operating groove is formed on the outer wall of the semi-cylindrical frame (601) between the rear support plate (605) and the clamping plate (611), and a hydraulic cylinder four (615) is fixedly connected to the inner wall of the operating groove. A positioning round block (618) is fixedly connected to the output end of the hydraulic cylinder four (615), and the positioning round block (618) is located between the rear support plate (605) and the clamping plate (611).

6. The clamping structure of a special-shaped metal part according to claim 5, characterized in that: One end of each of the two deflection frame plates is fixedly connected to a rotating rod (5), and the ends of each of the two rotating rods (5) are fixedly connected to a bracelet (2). A positioning assembly (7) is provided at the top of the shaft (1). The positioning assembly (7) comprises a positioning frame (701), and the positioning frame (701) is fixedly connected to the top of the shaft (1).

7. The clamping structure of a special-shaped metal part according to claim 6, characterized in that: The tops of the two rotating rods (5) are fixedly connected with matching blocks (702), and the positioning frame (701) is fixedly connected with hydraulic cylinders (704) on the opposite sides close to the two matching blocks (702), and the output ends of the two hydraulic cylinders (704) are fixedly connected with push frames (703), and the inside of the push frame (703) is fixedly connected with a pressure sensor (705), and the push frame (703) is annularly distributed with telescopic connecting rods (706) located outside the pressure sensor (705), and one end of the multiple telescopic connecting rods (706) is fixedly connected with the same positioning plate (707), and the positioning plate (707) is in contact with the pressure sensor (705).

8. The clamping structure of a special-shaped metal part according to claim 7, characterized in that: The outer side of the shaft (1) is provided with a docking installation assembly (3), and the docking installation assembly (3) comprises a mounting ring frame (301), the mounting ring frame (301) surrounds the outer side of the shaft (1), the inner side wall of the mounting ring frame (301) is fixedly connected with an annular limiting rail (312), the inner side of the annular limiting rail (312) is slidably connected with a driven rotating gear (302), the outer side wall of the mounting ring frame (301) located at the top is fixedly connected with a motor frame (306), one side of the motor frame (306) is fixedly connected with a driving motor (305), the output shaft of the driving motor (305) is fixedly connected with a driving shaft (304) through a coupling, one end of the driving shaft (304) is fixedly connected with a driving gear disc (303), and the driving gear disc (303) and the driven rotating gear (302) are meshed.

9. The clamping structure of a special-shaped metal part according to claim 8, characterized in that: The inner side wall below the driven rotating gear (302) is fixedly connected to a docking tube (311), and the bottom of the shaft rod (1) is fixedly connected to a docking column (307), the docking column (307) is inserted into the inside of the docking tube (311), the outer side wall of the docking tube (311) is fixedly connected to an external frame (310), the inner side wall of the external frame (310) is fixedly connected to two hydraulic cylinders (308), the output ends of the two hydraulic cylinders (308) are fixedly connected to an embedding rod (309), the docking tube (311) and the docking column (307) are both provided with embedding grooves, and the embedding rod (309) is inserted into the inside of the corresponding embedding grooves.

10. A method for clamping a special-shaped metal part, using the clamping structure for a special-shaped metal part according to claim 5, characterized in that: The following steps are involved: Step 1: When clamping a metal part, if the metal part is a regular metal part, the staff directly presses the two deflection clamping plates (4) toward the metal part, so that the clamping plate (611) is passively deflected backward, and the spring rod (604) is pressed to drive the clamping plate (611) to effectively clamp the metal part; Step 2: If the metal piece is a special-shaped structure, the clamping plate (611) initially clamps it, and then the hydraulic cylinder 3 (607) is adjusted to drive the guide rail (602) to deflect to the outside of the metal piece, and then the hydraulic cylinder 2 (606) is adjusted to drive the locking frame (610) to move to contact the outer wall of the metal piece; Step 3: Then start the rotating motor (608), which drives the locking frame (610) to perform fine adjustment so that there is interaction force between the locking frame (610) and the metal piece. The locking frame (610) in four directions cooperates with the two clamping plates (611) to clamp the special-shaped metal piece.

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