A flexible vacuum fixture

Abstract

The present invention discloses a flexible vacuum clamp, comprising a suction cup (1), wherein the bottom of the suction cup (1) is threadedly connected to a vacuum support (2), the lower part of the vacuum support (2) is threadedly connected to a movable plunger (3), a limiting sleeve (4) is arranged outside the movable plunger (3), the movable plunger (3) is also bolted to a sliding bolt (5), and further comprising a mounting seat (6), wherein a sliding sleeve (7) is installed inside the mounting seat (6), the mounting seat (6) is threadedly connected to a bottom plate (8), and the bottom of the mounting seat (6) is threadedly connected to a fixed support (9). The flexible vacuum clamp provided by the present invention has high versatility, uniform clamping force, simple operation, and convenient maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical auxiliary processing, and in particular to a flexible vacuum clamp. Background Art

[0002] Vacuum clamps are widely used in the processing of thin-walled parts. Commonly used vacuum clamping systems are suitable for processing thin-walled metal parts with flat bottoms and large areas. In recent years, multi-point flexible clamps have appeared to solve the clamping problem of thin-walled structural parts. Most of them are vacuum clamps for processing on both sides of a large area. The design of these vacuum clamps provides an effective method for controlling the processing deformation of thin-walled components and ensuring the processing accuracy.

[0003] The surface of a typical aircraft thin-walled component is composed of multiple cavities. The thinnest part of the web of these small cavities is less than 1 mm, with complex structures and varied shapes and sizes. Such structural parts usually cannot use the above-mentioned vacuum fixtures. If special vacuum fixtures are used, the fixtures will be of many types and numbers, and the versatility of the fixtures cannot be guaranteed. At the same time, the clamping force provided by the previous fixtures is uneven, and they do not have adaptive capabilities. The maintenance cost is high, and the operator's skills are high, making it difficult to popularize them. Summary of the invention

[0004] The present invention provides a flexible vacuum clamp to solve the technical problems in the prior art that thin-walled parts processing clamps are not universal, have uneven clamping force, are inconvenient to maintain, have no adaptive ability, require high operating skills and are difficult to popularize.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A flexible vacuum clamp comprises a suction cup, a vacuum support being threadedly connected to the bottom of the suction cup, a movable plunger being threadedly connected to the lower part of the vacuum support, a limiting sleeve being arranged outside the movable plunger, the movable plunger being also connected to a sliding bolt via bolts, and a mounting seat being provided inside the mounting seat, a sliding sleeve being installed inside the mounting seat, the mounting seat being threadedly connected to a base plate, and a fixed support being threadedly connected to the bottom of the mounting seat.

[0007] The suction cup is an integral cylindrical, square or polygonal structure, and is provided with a first cavity, a second cavity, a first annular groove, a first gas channel, and a second gas channel. The first gas channel is connected to the first cavity, and the second gas channel leads to the workpiece mounting surface. The second cavity is provided with an internal thread for installing a vacuum support, and a seal is installed in the first annular groove.

[0008] The vacuum support is an integral cylindrical step structure with external threads at both ends and a second annular groove at the large end for installing a sealing ring. The vacuum support is provided with a third gas channel and a first gas channel port. The third gas channel is connected to the vacuum system, and the first gas channel port is connected to the first gas channel.

[0009] The movable plunger is a cylindrical hollow structure, with a third cavity provided at the upper end and a fourth cavity provided at the other end, the third cavity opening is provided with an internal thread for installing an exhaust support, a limited position boss is provided between the third cavity and the fourth cavity, a bolt through hole is provided at the center of the limited position boss, and the upper surfaces of the limited position boss are respectively provided with a first limit surface and a second limit surface, a plurality of U-shaped grooves are provided on the outer surface of the movable plunger, an elastic chuck is connected to the outside of the U-shaped groove, a sliding sleeve lifting spring is installed in the third cavity, a nut is installed on the first limit surface, the elastic chuck is a trapezoidal annular structure, composed of a locking block and a radial spring, a gap is left between the locking blocks, and the radial spring surrounds the locking block into concentric circles, and a locking cone surface 2, an upper limit surface, and a lower limit surface are provided on the outer wall of the locking block, and an anti-slip boss is provided, the anti-slip boss contacts with the U-shaped groove, and the elastic chuck is installed between the sliding sleeve, the limit sleeve and the mounting seat, and can be radially extended and contracted.

[0010] The limiting sleeve is a central hollow cylindrical structure, provided with a third limiting surface, a fourth limiting surface, and a fifth cavity. The outer surface of the limiting sleeve is provided with an annular groove for installing a sealing ring, the lower end of the limiting sleeve is provided with an external thread, and the movable plunger is installed in the fifth cavity.

[0011] The sliding bolt is an integral solid structure, the head of the sliding bolt is provided with an annular groove for installing a sealing ring, and the other end is provided with an external thread. The sliding bolt is installed in a fixed support, one end of the sliding bolt passes through the bolt through hole of the movable plunger, and the movable bolt is connected to a nut.

[0012] The sliding sleeve is an annular step structure with a central cavity, and is provided with a sixth cavity, a seventh cavity, and an eighth cavity. The opening of the sixth cavity is provided with a locking cone surface 1, and the lower end is provided with a fifth limit surface, a sixth limit surface, and a seventh limit surface. The sliding sleeve is installed in a mounting seat to form a first annular cavity, and a butterfly spring is installed in the first annular cavity.

[0013] The mounting seat is an annular cavity structure with openings at both ends, and is provided with a top surface, an upper opening, a lower opening, and a ninth cavity. The outer shape is provided with a positioning surface for accurate positioning on the base plate, and the lower opening is provided with an external thread. A sliding sleeve is installed on the upper part of the mounting seat. The sliding sleeve is an annular structure and is provided with a center hole, an eighth limiting surface and a ninth limiting surface. The sliding sleeve is installed on the upper end opening of the mounting seat, the eighth limiting surface is in contact with the top surface of the mounting seat, and the ninth limiting surface is flush with the inner top surface of the mounting seat.

[0014] The fixed support is an integral cylindrical step structure, with a first support, a second support, and a third support provided on the outside, and a first cavity, a second cavity, and a third cavity provided on the inside. A support seat is installed in the first cavity, a sliding bolt is installed in the second cavity, and a cylindrical helical compression spring is installed in the third cavity. The cylindrical helical compression spring is located between the sliding bolt and the fixed support. The support seat is an annular structure, and is provided with a hydraulic oil cavity, an oil hole, a sealing ring installation port, and a bottom surface. A first pressure cavity is formed between the support seat and the sliding bolt, and a cavity is formed between the installation seat and the fixed support.

[0015] The first pillar is provided with a sealing installation groove, a first step, a second step, a hydraulic oil channel 1, an exhaust hole, a positioning groove and a threaded connection port, the positioning groove can limit the radial movement of the limiting sleeve, the threaded connection port can limit the axial movement of the limiting sleeve, and the first pillar is located in the eighth cavity;

[0016] The hydraulic oil channel communicates with the first cavity and the first step;

[0017] The exhaust hole is connected to the bottom surface of the fixed support and the second step;

[0018] The limiting sleeve and the outer wall of the second pillar form an annular cavity, the movable plunger can slide axially in the annular cavity, and the second pillar is located in the fourth cavity;

[0019] The outer surface of the third pillar is provided with threads, and the support is installed below the mounting seat through the threaded fixing support;

[0020] A second pressure chamber is formed between the fixed support, the mounting seat and the sliding sleeve.

[0021] The base plate is a rectangular structure and is provided with a plurality of mounting seat positioning holes, which can limit the radial movement of the mounting seat. It also includes a threaded connection hole, a second hydraulic oil channel, and a gas channel. The second hydraulic oil channel is connected to the oil supply system, and the gas channel is the same as the atmospheric environment. The gas channel is also connected to the exhaust hole.

[0022] Based on the above technical solution, the following technical effects can be produced:

[0023] 1. The present invention uses a vacuum pump to evacuate the first cavity 21. Due to the pressure difference between the inside and outside, a uniform clamping force is generated in the adsorption area to complete the workpiece clamping;

[0024] 2. The flexible vacuum clamp of the present invention is easy to install and has adaptability. It does not need to manually adjust the height of the suction cup. For web structures with different cavity sizes or structures, only the suction cup needs to be replaced;

[0025] 3. The flexible vacuum clamp provided by the present invention is easy to operate, and the components are movably connected, which is convenient to maintain and easy to replace wearing parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of a flexible vacuum clamp of the present invention;

[0027] Figure 2 It is a schematic diagram of a suction cup of a flexible vacuum clamp of the present invention;

[0028] Figure 3 It is a top view of a square suction cup of a flexible vacuum clamp of the present invention;

[0029] Figure 4 It is a top view of a circular suction cup of a flexible vacuum clamp of the present invention;

[0030] Figure 5 It is a schematic diagram of an air extraction support of a flexible vacuum clamp of the present invention;

[0031] Figure 6 It is a schematic diagram of a movable plunger of a flexible vacuum clamp of the present invention;

[0032] Figure 7 It is a schematic diagram of a limiting sleeve of a flexible vacuum clamp of the present invention;

[0033] Figure 8 It is a schematic diagram of a sliding bolt of a flexible vacuum clamp of the present invention;

[0034] Fig. 9 It is a schematic diagram of a sliding sleeve of a flexible vacuum clamp of the present invention;

[0035] Fig.10 It is a schematic diagram of a sliding sleeve of a flexible vacuum clamp of the present invention;

[0036] Fig.11 It is a schematic diagram of a sliding sleeve of a flexible vacuum clamp of the present invention;

[0037] Fig.12 It is a schematic diagram of a support seat of a flexible vacuum clamp of the present invention;

[0038] Fig.13 It is a schematic diagram of a fixed support of a flexible vacuum clamp of the present invention;

[0039] Fig.14 It is a schematic diagram of an elastic clamp of a flexible vacuum clamp of the present invention;

[0040] Fig.15 It is a top view of an elastic clamp of a flexible vacuum clamp of the present invention;

[0041] Fig.16 It is a schematic diagram of a bottom plate of a flexible vacuum clamp of the present invention;

[0042] Fig.17 It is a top view of the bottom plate of a flexible vacuum clamp of the present invention.

[0043] In the figure, 1-suction cup, 1.1-first cavity, 1.2-second cavity, 1.3-first annular groove, 1.4-first gas channel, 1.5-second gas channel, 1.6-workpiece mounting surface, 2-vacuum support, 2.1-second annular groove, 2.2-third gas channel, 2.3-first gas channel opening, 3-movable plunger, 3.1-third cavity, 3.2-fourth cavity, 3.3-internal thread, 3.4-limiting boss, 3.5-bolt through hole, 3.6-first limiting surface, 3.7-second limiting surface, 3.8-U-shaped groove, 4-limiting sleeve, 4. 1-third limiting surface, 4.2-fourth limiting surface, 4.3-fifth cavity, 4.4-annular groove, 4.5-external thread, 5-sliding bolt, 1-annular groove, 6-mounting seat, 6.1-top surface, 6.2-upper end opening, 6.3-lower end opening, 6.4-ninth cavity, 6.5-positioning surface, 7-sliding sleeve, 7.1-sixth cavity, 7.2-seventh cavity, 7.3-eighth cavity, 7.4-locking cone surface 1, 7.5-fifth limiting surface, 7.6-sixth limiting surface, 7.7-seventh limiting surface, 7.8-first annular cavity, 8-bottom plate, 8.1- Mounting seat positioning hole, 8.2-threaded connection hole, 8.3-hydraulic oil channel 2, 8.4-gas channel, 9-fixed support, 9.1-first pillar, 9.11-sealed mounting groove, 9.12-first step, 9.13-second step, 9.14-hydraulic oil channel 1, 9.15-exhaust hole, 9.16-positioning groove, 9.17-threaded connection port, 9.2-second pillar, 9.3-third pillar, 9.4-first cavity, 9.5-second cavity, 9.6-third cavity, 10-elastic chuck, 10.1-locking block, 10.2-radial spring , 10.3-locking cone surface 2, 10.4-upper limit surface, 10.5-lower limit surface, 10.6-anti-slip boss, 11-sliding sleeve lifting spring, 12-nut, 13-butterfly spring, 14-sleeve, 14.1-center hole, 14.2-eighth limit surface, 14.3-ninth limit surface, 15-support seat, 15.1-hydraulic oil cavity, 15.2-oil hole, 15.3-sealing ring installation port, 15.4-bottom surface, 16-cylindrical helical compression spring, 17-annular cavity, 18-second pressure cavity, 19-first pressure cavity, 20-cavity. DETAILED DESCRIPTION

[0044] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0045] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] like Figure 1-17 As shown, a flexible vacuum clamp includes a suction cup 1, a vacuum support 2 is threadedly connected to the bottom of the suction cup 1, a movable plunger 3 is threadedly connected to the lower part of the vacuum support 2, a limiting sleeve 4 is arranged outside the movable plunger 3, and the movable plunger 3 is also connected to a sliding bolt 5 by bolts, and also includes a mounting seat 6, a sliding sleeve 7 is installed in the mounting seat 6, the mounting seat 6 is threadedly connected to a base plate 8, and a fixed support 9 is threadedly connected to the bottom of the mounting seat 6.

[0049] The suction cup 1 is an integral cylindrical, square or polygonal structure, and is provided with a first cavity 1.1, a second cavity 1.2, a first annular groove 1.3, a first gas channel 1.4, and a second gas channel 1.5. The first gas channel 1.4 is connected to the first cavity 1.1, and the second gas channel 1.5 leads to the workpiece mounting surface 1.6. The second cavity 1.2 is provided with an internal thread 1.7 for installing the vacuum support 2, and a seal is installed in the first annular groove 1.3.

[0050] The vacuum support 2 is an integral cylindrical step structure with external threads at both ends. The large end is provided with a second annular groove 2.1 for installing a sealing ring. The vacuum support 2 is provided with a third gas channel 2.2 and a first gas channel port 2.3. The third gas channel 2.2 is connected to the vacuum system, and the first gas channel port 2.3 is connected to the first gas channel 1.4.

[0051] The movable plunger 3 is a cylindrical hollow structure, with a third cavity 3.1 at the upper end and a fourth cavity 3.2 at the other end. The opening of the third cavity 3.1 is provided with an internal thread 3.3 for installing the exhaust support 2. A limited boss 3.4 is provided between the third cavity 3.1 and the fourth cavity 3.2. A bolt through hole 3.5 is provided at the center of the limited boss 3.4. The upper surface of the limited boss 3.4 is respectively provided with a first limited surface 3.6 and a second limited surface 3.7. The outer surface of the movable plunger 3 is provided with a plurality of U-shaped grooves 3.8. The U-shaped grooves 3.8 are externally connected to an elastic chuck 10. A sliding The sleeve rises spring 11, and a nut 12 is installed on the first limit surface 3.6. The elastic chuck 10 is a trapezoidal ring structure, which is composed of a locking block 10.1 and a radial spring 10.2. A gap is left between the locking blocks 10.1. The radial spring 10.2 surrounds the locking block 10.1 into a concentric circle. The outer wall of the locking block 10.1 is provided with a locking cone surface 10.3, an upper limit surface 10.4, and a lower limit surface 10.5. The inner wall of the locking block is provided with an anti-slip boss 10.6, and the anti-slip boss 10.6 is in contact with the U-shaped groove 3.8. The elastic chuck 10 is installed between the sliding sleeve 7, the limit sleeve 4 and the mounting seat 6, and can be radially extended and contracted.

[0052] The limiting sleeve 4 is a central hollow cylindrical structure, provided with a third limiting surface 4.1, a fourth limiting surface 4.2, and a fifth cavity 4.3. The outer surface of the limiting sleeve is provided with an annular groove 4.4 for installing a sealing ring, and the lower end of the limiting sleeve 4 is provided with an external thread 4.5. The movable plunger 3 is installed in the fifth cavity 4.3.

[0053] The sliding bolt 5 is an integral solid structure. The head of the sliding bolt 5 is provided with an annular groove 5.1 for installing a sealing ring, and the other end is provided with an external thread. The sliding bolt 5 is installed in the fixed support 9. One end of the sliding bolt 5 passes through the bolt through hole 3.6 of the movable plunger 3. The movable bolt 5 is connected to the nut 12.

[0054] The sliding sleeve 7 is an annular step structure with a central cavity, and is provided with a sixth cavity 7.1, a seventh cavity 7.2, and an eighth cavity 7.3. The opening of the sixth cavity 7.1 is provided with a locking cone surface 7.4, and the lower end is provided with a fifth limit surface 7.5, a sixth limit surface 7.6, and a seventh limit surface 7.7. The sliding sleeve 7 is installed in the mounting seat 6 to form a first annular cavity 7.8, and a butterfly spring 13 is installed in the first annular cavity 7.8.

[0055] The mounting seat 6 is an annular cavity structure with openings at both ends, and is provided with a top surface 6.1, an upper opening 6.2, a lower opening 6.3, and a ninth cavity 6.4. The outer shape is provided with a positioning surface 6.5 for accurate positioning on the bottom plate 8, and the lower opening 6.3 is provided with an external thread. A sliding sleeve 14 is installed on the upper part of the mounting seat 6. The sliding sleeve 14 is an annular structure, and is provided with a center hole 14.1, an eighth limiting surface 14.2 and a ninth limiting surface 14.3. The sliding sleeve 14 is installed on the upper opening 6.2 of the mounting seat 6, the eighth limiting surface 14.2 is in contact with the top surface 6.1 of the mounting seat 6, and the ninth limiting surface 14.3 is flush with the inner top surface of the mounting seat 6.

[0056] The fixed support 9 is an integral cylindrical step structure, with a first pillar 9.1, a second pillar 9.2, and a third pillar 9.3 provided on the outside, and a first cavity 9.4, a second cavity 9.5, and a third cavity 9.6 provided on the inside. A support seat 15 is installed in the first cavity 9.4, a sliding bolt 5 is installed in the second cavity 9.5, and a cylindrical helical compression spring 16 is installed in the third cavity 9.6. The cylindrical helical compression spring 16 is located between the sliding bolt 5 and the fixed support 9. The support seat 15 is an annular structure, and is provided with a hydraulic oil cavity 15.1, an oil hole 15.2, a sealing ring installation port 15.3, and a bottom surface 15.4. A first pressure cavity 19 is formed between the support seat 15 and the sliding bolt 5, and a cavity 20 is formed between the mounting seat 6 and the fixed support 9.

[0057] The first pillar 9.1 is provided with a sealing installation groove 9.11, a first step 9.12, a second step 9.13, a hydraulic oil channel 1 9.14, an exhaust hole 9.15, a positioning groove 9.16 and a threaded connection port 9.17. The positioning groove 9.16 can limit the radial movement of the limiting sleeve 4, and the threaded connection port 9.17 can limit the axial movement of the limiting sleeve 14. The first pillar 9.1 is located in the eighth cavity 7.3;

[0058] The hydraulic oil channel 9.14 communicates with the first cavity 9.4 and the first step 9.12;

[0059] The exhaust hole 9.15 is connected to the bottom surface of the fixed support 9 and the second step 9.13;

[0060] The limiting sleeve 14 and the outer wall of the second pillar 9.2 form an annular cavity 17, and the movable plunger 3 can slide axially in the annular cavity 17. The second pillar 9.2 is located in the fourth cavity 3.2;

[0061] The outer surface of the third support 9.3 is provided with threads, and the support 9 is installed below the mounting seat 6 through the threads;

[0062] A second pressure chamber 18 is formed between the fixed support 9 , the mounting seat 6 , and the sliding sleeve 7 .

[0063] The base plate 8 is a rectangular parallelepiped structure, provided with a plurality of mounting seat positioning holes 8.1, which can limit the radial movement of the mounting seat 6, and also includes a threaded connection hole 8.2, a hydraulic oil channel 8.3, and a gas channel 8.4. The hydraulic oil channel 8.3 is connected to the oil supply system, and the gas channel 8.4 is the same as the atmospheric environment. The gas channel 8.4 is also connected to the exhaust hole 9.15.

[0064] The working principle of a flexible vacuum clamp disclosed in the present invention is as follows:

[0065] When the oil pressure is not supplied, the clamp is in a released state; after the oil supply starts, the hydraulic oil enters the hydraulic oil cavity 15.1, and then enters the first pressure cavity 19. Under the action of the oil pressure, the sliding bolt 5 rises, the cylindrical helical compression spring 16 is compressed, and the sliding sleeve lifting spring 11 drives the suction cup 1 to rise until it completely contacts the workpiece; then, the hydraulic oil enters the cavity 20 through the hydraulic oil channel 19.14. Under the action of the oil pressure, the sliding sleeve 7 moves upward in the axial direction, the butterfly spring 13 is compressed, and the locking cone surface 17.4 of the sliding sleeve 7 is in contact with the locking cone surface 210.3 of the elastic chuck 10. The sliding sleeve 7 continues to move upward, the elastic chuck 10 is subjected to radial force, the radial spring 10.2 is compressed, the locking block 10.1 generates a large radial force on the movable plunger 3, thereby generating a strong clamping force on the movable plunger 3, the anti-slip boss 10.6 contacts the U-shaped groove 3.8, and the freedom of the movable plunger 3 in the axial direction is restricted; finally, the first cavity 1.1 is evacuated by a vacuum pump, and due to the internal and external pressure difference, a uniform clamping force is generated in the adsorption area to complete the workpiece clamping; after the workpiece is processed, the first cavity 1.1 is connected to the atmosphere to release the workpiece. The vacuum flexible clamp is easy to install and has adaptability. There is no need to manually adjust the height of the suction cup. For the web structure with different cavity sizes or structures, only the suction cup 1 needs to be replaced.

[0066] The present invention is described in detail above with reference to the accompanying drawings and embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the scope of ordinary technicians in the field without departing from the purpose of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope of protection of the present invention.

Claims

1. A flexible vacuum clamp, characterized in that: The invention comprises a suction cup (1), wherein the bottom of the suction cup (1) is threadedly connected to a suction support (2), the lower part of the suction support (2) is threadedly connected to a movable plunger (3), a limiting sleeve (4) is arranged outside the movable plunger (3), the movable plunger (3) is also boltedly connected to a sliding bolt (5), and further comprises a mounting seat (6), a sliding sleeve (7) is installed inside the mounting seat (6), the mounting seat (6) is threadedly connected to a bottom plate (8), and the bottom of the mounting seat (6) is threadedly connected to a fixed support (9); The movable plunger (3) is a cylindrical hollow structure, with a third cavity (3.1) provided at the upper end and a fourth cavity (3.2) provided at the other end. The opening of the third cavity (3.1) is provided with an internal thread (3.3) for mounting an exhaust support (2). A limiting boss (3.4) is provided between the third cavity (3.1) and the fourth cavity (3.2). A bolt through hole (3.5) is provided at the center of the limiting boss (3.4). The upper surface of the limiting boss (3.4) is provided with a first limiting surface (3.6) and a second limiting surface (3.7). The outer surface of the movable plunger (3) is provided with a plurality of U-shaped grooves (3.8). The U-shaped grooves (3.8) are externally connected to an elastic chuck (10). A sliding sleeve is installed in the third cavity (3.1). The cylinder lifting spring (11) is provided with a nut (12) on the first limiting surface (3.6). The elastic chuck (10) is a trapezoidal ring structure, which is composed of a locking block (10.1) and a radial spring (10.2). A gap is left between the locking blocks (10.1). The radial spring (10.2) surrounds the locking block (10.1) to form a concentric circle. The outer wall of the locking block (10.1) is provided with a locking cone surface 2 (10.3), an upper limiting surface (10.4), and a lower limiting surface (10.5). The inner wall of the locking block is provided with an anti-slip boss (10.6). The anti-slip boss (10.6) contacts the U-shaped groove (3.8). The elastic chuck (10) is installed between the sliding sleeve (7), the limiting sleeve (4) and the mounting seat (6) and can be radially extended and contracted.

2. A flexible vacuum clamp according to claim 1, characterized in that: The suction cup (1) is an integral cylindrical, square or polygonal structure, and is provided with a first cavity (1.1), a second cavity (1.2), a first annular groove (1.3), a first gas channel (1.4) and a second gas channel (1.5); the first gas channel (1.4) is connected to the first cavity (1.1), the second gas channel (1.5) leads to a workpiece mounting surface (1.6); the second cavity (1.2) is provided with an internal thread (3.3) for mounting a vacuum support (2); and a sealing member is installed in the first annular groove (1.3).

3. A flexible vacuum clamp according to claim 1, characterized in that: The exhaust support (2) is an integral cylindrical step structure, with external threads provided at both ends, and a second annular groove (2.1) provided at the larger end for mounting a sealing ring, the exhaust support (2) being provided with a third gas channel (2.2) and a first gas channel opening (2.3), the third gas channel (2.2) being connected to the exhaust system, and the first gas channel opening (2.3) being connected to the first gas channel (1.4).

4. A flexible vacuum clamp according to claim 1, characterized in that: The limiting sleeve (4) is a central hollow cylindrical structure, provided with a third limiting surface (4.1), a fourth limiting surface (4.2), and a fifth cavity (4.3); the outer surface of the limiting sleeve is provided with a sleeve annular groove (4.4) for installing a sealing ring; the lower end of the limiting sleeve (4) is provided with an external thread (4.5); and the movable plunger (3) is installed in the fifth cavity (4.3).

5. The flexible vacuum clamp according to claim 1, characterized in that: The sliding bolt (5) is an integral solid structure. The head of the sliding bolt (5) is provided with a bolt annular groove (5.1) for mounting a sealing ring. The other end is provided with an external thread. The sliding bolt (5) is mounted in a fixed support (9). One end of the sliding bolt (5) passes through a bolt through hole (3.5) of the movable plunger (3). The sliding bolt (5) is connected to a nut (12).

6. The flexible vacuum clamp according to claim 1, characterized in that: The sliding sleeve (7) is an annular step structure with a central cavity, and is provided with a sixth cavity (7.1), a seventh cavity (7.2), and an eighth cavity (7.3). The opening of the sixth cavity (7.1) is provided with a locking cone surface 1 (7.4), and the lower end is provided with a fifth limit surface (7.5), a sixth limit surface (7.6), and a seventh limit surface (7.7). The sliding sleeve (7) is installed in the mounting seat (6) to form a first annular cavity (7.8), and a butterfly spring (13) is installed in the first annular cavity (7.8).

7. The flexible vacuum clamp according to claim 1, characterized in that: The mounting seat (6) is an annular cavity structure with openings at both ends, and is provided with a top surface (6.1), an upper opening (6.2), a lower opening (6.3), and a ninth cavity (6.4). The outer shape is provided with a positioning surface (6.5) for accurately positioning on the bottom plate (8), and the lower opening (6.3) is provided with an external thread. A sliding sleeve (14) is installed on the upper part of the mounting seat (6). The sliding sleeve (14) is an annular structure and is provided with a center hole (14.1), an eighth limiting surface (14.2) and a ninth limiting surface (14.3). The sliding sleeve (14) is installed on the upper opening (6.2) of the mounting seat (6), the eighth limiting surface (14.2) is in contact with the top surface (6.1) of the mounting seat (6), and the ninth limiting surface (14.3) is flush with the inner top surface of the mounting seat (6).

8. The flexible vacuum clamp according to claim 1, characterized in that: The fixed support (9) is an integral cylindrical step structure, with a first support (9.1), a second support (9.2), and a third support (9.3) provided on the outside, and a first cavity (9.4), a second cavity (9.5), and a third cavity (9.6) provided on the inside; a support seat (15) is installed in the first cavity (9.4), a sliding bolt (5) is installed in the second cavity (9.5), and a cylindrical helical compression spring (16) is installed in the third cavity (9.6); the cylindrical helical compression spring (16) is located between the sliding bolt (5) and the fixed support (9); the support seat (15) is an annular structure, with a hydraulic oil cavity (15.1), an oil hole (15.2), a sealing ring installation port (15.3), and a bottom surface (15.4); a first pressure cavity (19) is formed between the support seat (15) and the sliding bolt (5), and a cavity (20) is formed between the installation seat (6) and the fixed support (9); The first pillar (9.1) is provided with a sealing installation groove (9.11), a first step (9.12), a second step (9.13), a hydraulic oil channel 1 (9.14), an exhaust hole (9.15), a positioning groove (9.16) and a threaded connection port (9.17); the positioning groove (9.16) can limit the radial movement of the limiting sleeve (4); the threaded connection port (9.17) can limit the axial movement of the limiting sleeve (4); the first pillar (9.1) is located in the eighth cavity (7.3); The hydraulic oil channel (9.14) is in communication with the first cavity (9.4) and the first step (9.12); The exhaust hole (9.15) is connected to the bottom surface of the fixed support (9) and the second step (9.13); The limiting sleeve (4) and the outer wall of the second pillar (9.2) form an annular cavity (17), the movable plunger (3) can slide axially in the annular cavity (17), and the second pillar (9.2) is located in the fourth cavity (3.2); The outer surface of the third pillar (9.3) is provided with threads, and is installed below the mounting seat (6) through the threaded fixing support (9); A second pressure chamber (18) is formed between the fixed support (9), the mounting seat (6) and the sliding sleeve (7).

9. The flexible vacuum clamp according to claim 1, characterized in that: The base plate (8) is a rectangular parallelepiped structure, and is provided with a plurality of mounting seat positioning holes (8.1) that can limit the radial movement of the mounting seat (6), and also includes a threaded connection hole (8.2), a second hydraulic oil channel (8.3), and a gas channel (8.4). The second hydraulic oil channel (8.3) is connected to the oil supply system, and the gas channel (8.4) is the same as the atmospheric environment. The gas channel (8.4) is also connected to the exhaust hole (9.15).

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