Floating clamping chuck

Abstract

The utility model discloses a floating clamping chuck, which relates to the technical field of chucks, and comprises a chuck assembly, the chuck assembly comprises a chuck body, a chuck base and an upper fixing disc, the upper fixing disc and the chuck base are respectively fixed at the upper end and the lower end of the chuck body, a chuck assembly is arranged in the chuck body, and the chuck assembly comprises a chuck body. A floating inclined block is installed in the upper fixing disc, a first inclined face is arranged on an inner ring of the floating inclined block, a plurality of clamping jaws are arranged at the upper end of the chuck body, a second inclined face is arranged on the outer wall of each clamping jaw, the first inclined face is in sliding contact with the second inclined face, and a tip is installed at the upper end of the center of the chuck base. A first floating piece is arranged between the lower end of the floating inclined block and the chuck body; a chuck driving device is arranged in the chuck body and used for driving the chuck assembly to move up and down, and a second floating piece is arranged between the chuck assembly and the chuck driving device. The problems of displacement or deformation and the like of the workpiece to be machined can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of chuck technology, and in particular to a floating clamping chuck. Background Technology

[0002] In existing center chucks, the chuck does not have floating capability. When the workpiece is centered at the center, the chuck cannot simultaneously contact the workpiece due to the differences in the workpiece's dimensional and geometric tolerances. This causes the jaws that contact the workpiece first to exert a pushing force on it, resulting in workpiece deformation or the workpiece being pushed away from the center, thus leading to low machining accuracy.

[0003] Therefore, there is an urgent need in this field for a new type of floating clamping chuck to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a floating clamping chuck to solve the problems existing in the prior art, which can ensure that the workpiece to be processed remains stationary and avoid displacement or deformation.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model discloses a floating clamping chuck, including a chuck assembly. The chuck assembly includes a chuck body, a chuck base, and an upper fixed plate. The upper fixed plate and the chuck base are respectively fixed to the upper and lower ends of the chuck body. A chuck assembly is installed inside the chuck body. The chuck assembly includes a chuck body. A floating inclined block is installed inside the upper fixed plate. The inner ring of the floating inclined block is provided with a first inclined surface. The upper end of the chuck body is provided with a plurality of jaws. The outer wall of each jaw is provided with a second inclined surface. The first inclined surface and the second inclined surface slide in contact. A center point is installed at the upper center of the chuck base.

[0007] A first floating element is provided between the lower end of the floating inclined block and the chuck body; a chuck driving device is provided inside the chuck body, the chuck driving device is used to drive the chuck assembly to move up and down, and a second floating element is provided between the chuck assembly and the chuck driving device.

[0008] Preferably, both the first floating member and the second floating member include a plurality of rolling steel balls.

[0009] Preferably, both the first floating member and the second floating member further include a cage and a bearing race, the bearing race being disposed on one side of the cage, and a plurality of the rolling steel balls being mounted on each cage.

[0010] Preferably, the chuck assembly further includes a chuck connecting floating block, which is connected to the lower end of the chuck body and contacts the second floating member.

[0011] Preferably, the chuck driving device includes a driving block body and a driving block pressure plate, the driving block body and the driving block pressure plate are fixedly connected, the cavity between the driving block body and the chuck body is the upper cavity, the cavity between the driving block body and the chuck base is the lower cavity, the chuck base is provided with a lower cavity pressure medium flow channel, one end of the lower cavity pressure medium flow channel is connected to the lower cavity, and the other end of the lower cavity pressure medium flow channel is the lower cavity pressure medium outlet, the chuck base is provided with a first upper cavity pressure medium flow channel, the chuck body is provided with a second upper cavity pressure medium flow channel, one end of the second upper cavity pressure medium flow channel is connected to the first upper cavity pressure medium flow channel, and the other end of the second upper cavity pressure medium flow channel is connected to the upper cavity, the end of the first upper cavity pressure medium flow channel away from the second upper cavity pressure medium flow channel is the upper cavity pressure medium outlet, and both the lower cavity pressure medium outlet and the upper cavity pressure medium outlet are provided on the chuck base.

[0012] Preferably, both the lower chamber pressure medium inlet and the upper chamber pressure medium inlet are located on the lower surface of the chuck base; or both the lower chamber pressure medium inlet and the upper chamber pressure medium inlet are located on the inner wall of the central channel of the chuck base.

[0013] Preferably, an anti-rotation pin is provided between the chuck connecting floating block and the drive block body, and an anti-rotation pin is provided between the drive block body and the chuck base.

[0014] Preferably, the lower end of the tip is tapered, the upper end of the central channel of the chuck base is tapered, and the lower end of the tip is inserted into the upper end of the central channel of the chuck base.

[0015] Preferably, the chuck assembly is provided with an air blowing channel, one end of which is an air blowing port located on the chuck base, and the other end of the air blowing channel faces the gripper position.

[0016] Preferably, a machine tool spindle connecting flange is fixed to the side of the chuck base away from the chuck body, and the side of the machine tool spindle connecting flange away from the chuck base can be fixed to the machine tool spindle.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] In this invention, the floating inclined block is connected to the first floating component, allowing it to float to a certain extent; the chuck assembly is connected to the second floating component, enabling it to float as well. Under the dual floating action of the floating inclined block and the chuck assembly, the chuck assembly can change its position according to the pre-positioned workpiece. This allows the grippers to synchronously hold the workpiece along its axis, preventing lateral or thrust forces. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the floating clamping chuck of this utility model embodiment;

[0021] Figure 2 This is a top view of the floating clamping chuck of this utility model embodiment;

[0022] Figure 3 for Figure 2 GG cross-section diagram in the middle;

[0023] Figure 4 for Figure 2 HH cross-section diagram in the middle;

[0024] In the diagram: 1-Chuck body; 2-Chuck base; 3-Upper fixed plate; 4-Center; 5-Chuck body; 6-Chuck connecting floating block; 7-Floating inclined block; 8-First floating component; 9-Second floating component; 10-Drive block body; 11-Drive block pressure plate; 12-Lower cavity; 13-Upper cavity; 14-Machine tool spindle connecting flange; 15-Lower cavity pressure medium outlet; 16-Air blowing port; 17-Chuck anti-rotation pin; 18-Drive block anti-rotation pin; 19-Upper cavity pressure medium outlet; 20-Claw. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The purpose of this invention is to provide a floating clamping chuck to solve the problems existing in the prior art, which can ensure that the workpiece to be processed remains stationary and avoid displacement or deformation.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1-4 As shown, this embodiment provides a floating clamping chuck, including a chuck assembly. The chuck assembly includes three parts: a chuck body 1, a chuck base 2, and an upper fixing plate 3. The upper fixing plate 3 and the chuck base 2 are respectively fixed to the upper and lower ends of the chuck body 1 by bolts. Figures 3-4 The right side is the upper end, and the left side is the lower end. A chuck assembly is installed inside the chuck body 1. The chuck assembly includes a chuck body 5. A floating inclined block 7 is installed inside the upper fixed plate 3. A sealing ring is provided between the outer wall of the floating inclined block 7 and the inner ring of the upper fixed plate 3. A sealing ring is also provided between the inner side of the lower end of the floating inclined block 7 and the outer side of the upper end of the chuck body 1. However, there is a certain gap between the floating inclined block 7 and the upper fixed plate 3 and the chuck body 1, allowing the floating inclined block 7 to float (or move). The inner ring of the floating inclined block 7 has a first inclined surface, which is an annular inclined surface, and the diameter of the first inclined surface from left to right (…). Figure 3 The chuck body 5 gradually increases in size (from left to right). The upper end of the chuck body 5 (i.e.,...) Figure 3 and Figure 4 The right end of the middle is provided with several grippers 20, such as Figures 1-2 As shown, it specifically has six grippers 20, and the six grippers 20 are evenly distributed in the circumferential direction, from... Figure 4 As can be seen, each gripper 20 is located in the inner ring of the floating inclined block 7, and a second inclined surface is provided on the outer wall of each gripper 20. The first inclined surface and the second inclined surface are in sliding contact. In addition, a center point 4 is installed at the upper center of the chuck base 2, and the center point 4 is used to abut the end of the workpiece.

[0029] A first floating element 8 is provided between the lower end of the floating inclined block 7 and the chuck body 1, thereby ensuring that the floating inclined block 7 can float (or move) to a certain extent. Similarly, a chuck driving device is provided inside the chuck body 1, which is used to drive the chuck assembly to move up and down (i.e., Figures 3-4 (move left and right in the middle) to Figure 3Taking direction as an example, when the chuck drive device drives the chuck assembly to move to the right, each jaw 20 moves to the right, while the jaws 20 move away from each other, thus releasing the workpiece; conversely, when the chuck drive device drives the chuck assembly to move to the left, each jaw 20 moves to the left, while the jaws 20 move closer to each other, thus clamping the workpiece. A second floating element 9 is provided between the chuck assembly and the chuck drive device, thereby ensuring that the chuck assembly (especially the jaws 20) can float (or move) to a certain extent.

[0030] In practical use, in this embodiment, the tip 4 of the floating chuck first abuts against one end of the workpiece to be processed, and then the other end of the workpiece is abutted by another tip structure, thereby ensuring the workpiece is fixed. At this time, the chuck drive device is activated to drive the chuck assembly to move to the left. As each jaw 20 gradually approaches and contacts the workpiece to be clamped, due to the presence of the first floating member 8 and the second floating member 9, the jaws 20 and the floating inclined block 7 can change their own positions under the force of the workpiece, thereby cooperating with the workpiece and making each jaw 20 synchronously clamp the workpiece along the workpiece axis, without generating lateral force or thrust on the workpiece. When the processing is completed, it is only necessary to control the chuck drive device to drive the chuck assembly to move to the right, and each jaw 20 will release the workpiece.

[0031] In this embodiment, both the first floating member 8 and the second floating member 9 include multiple rolling steel balls. Specifically, the rolling steel balls in the first floating member 8 are circumferentially distributed between the floating inclined block 7 and the chuck body 1, allowing the floating inclined block 7 to perform certain movements. The rolling steel balls in the second floating member 9 are circumferentially distributed between the chuck assembly and the chuck drive device, thereby ensuring that the chuck assembly can perform certain movements.

[0032] In this embodiment, the specific structures of the first floating member 8 and the second floating member 9 can be configured in the following three ways:

[0033] First, you can just put in the rolling steel balls. Although this is inconvenient to use and the individual rolling steel balls are not easy to collect when disassembling, it is still acceptable.

[0034] Second, only the steel ball cage of the thrust ball bearing can be used, without the bearing shaft ring and bearing housing ring, and multiple rolling steel balls are installed on each cage;

[0035] Third, both the first floating member 8 and the second floating member 9 also include a cage and a bearing race, with the bearing race disposed on one side of the cage. In the first floating member 8, the bearing race is located at the lower end of the cage (i.e., Figure 3 (Left side), the bearing race in the second floating component 9 is located at the upper end of the cage (i.e., Figure 3The upper part of the bearing has multiple rolling steel balls mounted on each cage. Specifically, a thrust ball bearing with a steel ball cage and a bearing housing (or bearing shaft ring) can be used, and the installation direction is not restricted; the cage can be on the left or right.

[0036] Therefore, the key is to ensure that the upper and lower double-layered rolling steel balls enable the chuck assembly and the floating ramp to float synchronously.

[0037] In this embodiment, the chuck assembly further includes a chuck connecting floating block 6, which is connected to the lower end of the chuck body 5. Specifically, the inner ring of the chuck connecting floating block 6 has an internal thread, and the outer surface of the lower end of the chuck body 5 has an external thread. The chuck connecting floating block 6 and the lower end of the chuck body 5 are connected by threads. Furthermore, the outer edge of the upper surface of the chuck connecting floating block 6 contacts the rolling steel ball in the second floating member 9, thereby realizing the floating movement of the chuck connecting floating block 6 and further realizing the floating of the chuck body 5.

[0038] In this embodiment, the chuck driving device includes a driving block body 10 and a driving block pressure plate 11, such as Figure 3 As shown, the drive block body 10 is a T-shaped annular structure, specifically comprising a drive block sleeve and a drive block washer. The drive block sleeve is fixed to the upper end of the drive block washer, and the two are integrally manufactured. The upper end of the drive block body 10 (i.e., the drive block sleeve) and the drive block pressure plate 11 are fixedly connected by bolts. A sealing ring is provided between the outer wall of the drive block sleeve and the inner wall of the chuck body 1. A sealing ring is also provided between the inner wall of the drive block washer and the chuck base 2. The inner upper surface of the drive block washer contacts the lower surface of the chuck connecting floating block 6. The lower surface of the drive block pressure plate 11 contacts the bearing seat ring in the second floating component 9. The cavity between the drive block body 10 (specifically the upper surface of the drive block washer) and the chuck body 1 is the upper cavity 13, and the cavity between the drive block body 10 (specifically the lower surface of the drive block washer) and the chuck base 2 is the lower cavity 12. Figure 3 As shown, the chuck base 2 is provided with a lower chamber pressure medium flow channel. One end of the lower chamber pressure medium flow channel is connected to the lower chamber body 12, and the other end of the lower chamber pressure medium flow channel is the lower chamber pressure medium outlet 15, which can be connected to an external pressure medium source. Figure 4As shown, the chuck base 2 is provided with a first upper chamber pressure medium flow channel, and the chuck body 1 is provided with a second upper chamber pressure medium flow channel. One end of the second upper chamber pressure medium flow channel is connected to the first upper chamber pressure medium flow channel, and the other end of the second upper chamber pressure medium flow channel is connected to the upper chamber body 13. The end of the first upper chamber pressure medium flow channel away from the second upper chamber pressure medium flow channel is the upper chamber pressure medium outlet 19, which can be connected to an external pressure medium source. The external pressure medium source can be a hydraulic oil source (hydraulic station or oil tank) or an air source (such as an air tank), and both the lower chamber pressure medium outlet 15 and the upper chamber pressure medium outlet 19 are located on the chuck base 2. In order to connect the lower chamber pressure medium inlet 15 and the upper chamber pressure medium inlet 19 to external pressure medium sources respectively, a rotary joint can be installed at the end of the machine tool spindle away from the chuck assembly. The input end of the rotary joint is connected to the external pressure medium source (hydraulic oil or compressed gas) through a pipeline, and the output end of the rotary joint is connected to the lower chamber pressure medium inlet 15, the upper chamber pressure medium inlet 19 and the air blowing port 16 through a hose or steel pipe. The presence of the rotary joint can avoid the problem of tangling between the hoses.

[0039] When it is necessary to release the gripper 20, pressure medium (such as hydraulic oil or gas) is supplied to the lower cavity pressure medium outlet 15. The pressure medium enters the lower cavity 12 through the lower cavity pressure medium channel, while the pressure medium in the upper cavity 13 flows out from the upper cavity pressure medium outlet 19 through the second upper cavity pressure medium channel and the first upper cavity pressure medium channel, thereby pushing the drive block body 10 to move upward. The drive block washer in the drive block body 10 will then push the chuck connecting floating block 6 and the chuck body 5 to move upward, thereby releasing the gripper 20. Conversely, when the gripper 20 needs to clamp the workpiece, it only needs to supply pressure medium (such as hydraulic oil or gas) to the upper cavity pressure medium outlet 19. The pressure medium enters the upper cavity 13 through the first upper cavity pressure medium channel and the second upper cavity pressure medium channel, while the pressure medium in the lower cavity 12 flows out from the lower cavity pressure medium outlet 15 through the lower cavity pressure medium channel, thereby pushing the drive block body 10 to move downward. The drive block pressure plate 11 will then push the chuck connecting floating block 6 and the chuck body 5 to move downward, so that each gripper 20 moves closer to each other and clamps the workpiece.

[0040] In this embodiment, the positions of the lower chamber pressure medium inlet 15 and the upper chamber pressure medium inlet 19 can be selected according to actual needs. This embodiment provides the following two distribution methods:

[0041] First, both the lower chamber pressure medium inlet 15 and the upper chamber pressure medium inlet 19 are located on the lower surface of the chuck base 2.

[0042] Second, both the lower chamber pressure medium outlet 15 and the upper chamber pressure medium outlet 19 are located on the inner wall of the central channel of the chuck base 2.

[0043] Of course, those skilled in the art can flexibly adjust the positions of the lower chamber pressure medium outlet 15 and the upper chamber pressure medium outlet 19 according to actual needs, and are not limited to the two distribution methods mentioned above.

[0044] In this embodiment, a chuck anti-rotation pin 17 is provided between the chuck connecting floating block 6 and the drive block body 10. Specifically, one end of the chuck anti-rotation pin 17 is fixed to the chuck connecting floating block 6, and the other end extends into the corresponding countersunk hole on the upper surface of the drive block washer in the drive block body 10. The purpose of this arrangement is that when it is necessary to disassemble the chuck body 5, since the chuck body 5 and the chuck connecting floating block 6 are connected by threads, the chuck body 5 needs to be rotated to separate the chuck body 5 from the chuck connecting floating block 6. Therefore, the chuck anti-rotation pin 17 is used to ensure that the chuck connecting floating block 6 does not rotate with the rotation of the chuck body 5.

[0045] In addition, a drive block anti-rotation pin 18 is provided between the drive block body 10 and the chuck base 2. Specifically, one end of the drive block anti-rotation pin 18 is fixed to the bottom of the drive block body 10, and the other end extends into the corresponding countersunk hole on the upper surface of the chuck base 2. The purpose of this arrangement is to prevent relative rotation between the drive block body 10 and the chuck base 2 when the chuck assembly is started to rotate.

[0046] In this embodiment, the lower end of the tip 4 is a conical structure, and the upper end of the central channel of the chuck base 2 is a conical hole, i.e., from... Figure 3 The diameter of the central channel of the chuck base 2 gradually increases from left to right near the right end, and the lower end of the tip 4 is inserted into the upper end of the central channel of the chuck base 2 (i.e., the right end in the figure). The reason for using a tapered fit between the tip 4 and the central through hole of the chuck base 2 is to ensure that the two fit tightly together, thereby improving the fitting accuracy between the tip 4 and the chuck base 2.

[0047] After the lower end of the tip 4 is inserted into the upper end of the center channel of the chuck base 2, the tip 4 is then fixed to the upper end of the chuck base 2 with bolts.

[0048] In this embodiment, the chuck assembly is provided with an air blowing channel that passes through the chuck base 2 and the chuck body 1. One end of the air blowing channel is an air blowing port 16, which is connected to an external air source (such as an air canister) through an air pipe. The air blowing port 16 is located on the chuck base 2, and the other end of the air blowing channel is positioned towards the gripper 20.

[0049] In actual use, the gas from the external air source will be blown towards the gripper 20 through the air inlet 16 and the air channel, thereby blowing away the iron filings and dust around the gripper 20.

[0050] In this embodiment, the side of the chuck base 2 away from the chuck body 1 is bolted to a machine tool spindle connecting flange 14, and the side of the machine tool spindle connecting flange 14 away from the chuck base 2 can be bolted to the machine tool spindle. In actual assembly, the machine tool spindle connecting flange 14 should first be bolted to the machine tool spindle, and then the chuck base 2 should be fixed to the machine tool spindle connecting flange 14, thus achieving the installation of the chuck assembly.

[0051] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0054] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0055] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0056] It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0057] It should also be noted that in the embodiments of this application, the same reference numerals are used to denote the same component or the same part.

[0058] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0059] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A floating clamping chuck, characterized in that: The chuck assembly includes a chuck body (1), a chuck base (2), and an upper fixed plate (3). The upper fixed plate (3) and the chuck base (2) are respectively fixed to the upper and lower ends of the chuck body (1). A chuck assembly is installed inside the chuck body (1). The chuck assembly includes a chuck body (5). A floating inclined block (7) is installed inside the upper fixed plate (3). The inner ring of the floating inclined block (7) is provided with a first inclined surface. The upper end of the chuck body (5) is provided with a plurality of jaws (20). Each jaw (20) has a second inclined surface on its outer wall. The first inclined surface and the second inclined surface slide in contact. A center point (4) is installed at the upper center of the chuck base (2). A first floating element (8) is provided between the lower end of the floating inclined block (7) and the chuck body (1); a chuck driving device is provided inside the chuck body (1), the chuck driving device is used to drive the chuck assembly to move up and down, and a second floating element (9) is provided between the chuck assembly and the chuck driving device.

2. The floating chuck as set forth in claim 1, wherein: Both the first floating member (8) and the second floating member (9) include a plurality of rolling steel balls.

3. The floating clamp chuck according to claim 2, wherein: The first floating member (8) and the second floating member (9) also include a cage and a bearing race, the bearing race being disposed on one side of the cage, and a plurality of the rolling steel balls being mounted on each cage.

4. The floating clamp chuck of claim 1, wherein: The chuck assembly further includes a chuck connecting floating block (6), which is connected to the lower end of the chuck body (5) and contacts the second floating member (9).

5. The floating clamp chuck according to claim 4, wherein: The chuck driving device includes a driving block body (10) and a driving block pressure plate (11). The driving block body (10) and the driving block pressure plate (11) are fixedly connected. The cavity between the driving block body (10) and the chuck body (1) is the upper cavity (13), and the cavity between the driving block body (10) and the chuck base (2) is the lower cavity (12). The chuck base (2) is provided with a lower cavity pressure medium flow channel. One end of the lower cavity pressure medium flow channel is connected to the lower cavity (12), and the other end of the lower cavity pressure medium flow channel is the lower cavity pressure medium outlet. (15) The chuck base (2) is provided with a first upper cavity pressure medium flow channel, and the chuck body (1) is provided with a second upper cavity pressure medium flow channel. One end of the second upper cavity pressure medium flow channel is connected to the first upper cavity pressure medium flow channel, and the other end of the second upper cavity pressure medium flow channel is connected to the upper cavity body (13). The end of the first upper cavity pressure medium flow channel away from the second upper cavity pressure medium flow channel is the upper cavity pressure medium outlet (19). The lower cavity pressure medium outlet (15) and the upper cavity pressure medium outlet (19) are both provided on the chuck base (2).

6. The floating chuck as set forth in claim 5, further characterized by: The lower chamber pressure medium inlet (15) and the upper chamber pressure medium inlet (19) are both located on the lower surface of the chuck base (2); or the lower chamber pressure medium inlet (15) and the upper chamber pressure medium inlet (19) are both located on the inner wall of the central channel of the chuck base (2).

7. The floating clamp chuck according to claim 5, wherein: A chuck anti-rotation pin (17) is provided between the chuck connecting floating block (6) and the drive block body (10), and a drive block anti-rotation pin (18) is provided between the drive block body (10) and the chuck base (2).

8. The floating clamp chuck of claim 1, wherein: The lower end of the tip (4) is a conical structure, and the upper end of the central channel of the chuck base (2) is a conical hole. The lower end of the tip (4) is inserted into the upper end of the central channel of the chuck base (2).

9. The floating clamp chuck of claim 1, wherein: The chuck assembly is provided with an air blowing channel, one end of which is an air blowing port (16), which is located on the chuck base (2), and the other end of the air blowing channel faces the gripper (20).

10. The floating clamp chuck of claim 1, wherein: The chuck base (2) has a machine tool spindle connecting flange (14) fixed on the side away from the chuck body (1), and the side of the machine tool spindle connecting flange (14) away from the chuck base (2) can be fixed to the machine tool spindle.

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