Heavy cutting chuck with clamping stability and method of operation thereof

Abstract

The application discloses a heavy cutting clamping stable pneumatic chuck and an operating method thereof, and belongs to the technical field of the pneumatic chuck.The heavy cutting clamping stable pneumatic chuck comprises an outer cover, a jaw assembly and an auxiliary assembly are arranged in the outer cover, the auxiliary assembly drives the jaw assembly to move, the jaw assembly and the auxiliary assembly are synchronous to clamp a workpiece, a driving assembly is connected to the auxiliary assembly, and the driving assembly is connected with the inner wall of the outer cover.The application solves the problem that the existing clamping is only fixed by the jaw, the heavy cutting clamping stable pneumatic chuck and the operating method thereof are provided, the first external tooth and the first rack are used for driving the auxiliary clamping piece to move, the clamping plate applies reverse rotary cutting force to the two ends of the clamping piece, the two are kept stable in the horizontal direction, new clamping force is added on the basis of the jaw body, meanwhile, the auxiliary clamping piece is connected with the buffer, and the stability of the auxiliary clamping piece is further improved.

Description

Technical Field

[0001] This invention relates to the field of pneumatic chuck technology, specifically to a pneumatic chuck with stable clamping for heavy cutting and its operating method. Background Technology

[0002] Heavy cutting refers to the cutting process performed on large or heavy parts. It plays an important role in the large equipment manufacturing industry and is key to improving equipment processing efficiency.

[0003] Chinese patent CN211072301U discloses a high-precision linear guide pneumatic chuck. This patent uses the side thrust of the transmission cylinder to maintain the magnitude of the four-jaw clamping force, and the air pressure can be adjusted according to the pipe with different wall thicknesses.

[0004] Although this patent solves the problem of insufficient clamping force in the prior art to some extent, it still only uses jaws for clamping and fixing. When applied to heavy cutting, it is easy to have insufficient clamping stability due to the excessive weight of the workpiece. Summary of the Invention

[0005] The purpose of this invention is to provide a pneumatic chuck with stable clamping for heavy cutting and its operating method. By adding a new clamping force to the chuck body, the clamping stability is improved and the stability of the auxiliary clamping components is enhanced, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A pneumatic chuck for heavy-duty cutting and stable clamping includes an outer cover, inside which are a jaw assembly and an auxiliary assembly. The auxiliary assembly drives the jaw assembly to move, and the jaw assembly and the auxiliary assembly simultaneously clamp the workpiece. A drive assembly is connected to the auxiliary assembly, and the drive assembly is connected to the inner wall of the outer cover. The outer cover provides a guide for the movement path of the drive assembly.

[0008] Preferably, the claw assembly includes a guide rod, a slider, a guide cylinder, and a claw body. The guide cylinder is connected through the center of the slider. One end of the guide cylinder is fixedly connected to the claw body. The guide cylinder is movably sleeved with the guide rod. Sliding rods are provided on both sides of the slider and are movably connected to the auxiliary components.

[0009] Preferably, the auxiliary component includes a first rotating member, a second rotating member, a buffer, and an auxiliary clamping member. The first rotating member and the second rotating member are symmetrically distributed about the center of the guide cylinder axis, and both the first rotating member and the second rotating member are movably connected to the slider. A buffer is provided on one side of the first rotating member and the second rotating member respectively. The output end of the buffer is connected to the auxiliary clamping member. The side wall of the buffer is movably connected to the auxiliary clamping member. The auxiliary clamping member intermittently engages with the corresponding first rotating member and the second rotating member.

[0010] Preferably, the first and second rotating parts are provided with arc-shaped grooves, and the vertical distance between the arc-shaped grooves and the rotation axes of the first and second rotating parts gradually increases. The arc-shaped grooves are movably connected to the slide rod.

[0011] Preferably, the outer walls of the first rotating member and the second rotating member are provided with first external teeth, and the outer wall of the auxiliary clamping member near the first external teeth is fixedly connected with a first rack, the first rack intermittently meshing with the first external teeth, and the lower end of the auxiliary clamping member is provided with a clamping plate.

[0012] Preferably, the driving assembly includes a driving cylinder, a second rack, and a limiting plate. The output end of the driving cylinder is fixedly connected to the second rack, and limiting plates are symmetrically arranged on both sides of the second rack.

[0013] Preferably, the second rotating member has a second external tooth on its rotating shaft, and the second external tooth meshes with the second rack.

[0014] Preferably, the outer cover includes an upper cover, a partition, and a bottom plate. The lower end of the upper cover is fixedly connected to the bottom plate. A partition is provided inside the upper cover. The upper cover is used to fix the first rotating component and the buffer corresponding to the first rotating component. The partition is used to fix the second rotating component and the buffer corresponding to the second rotating component. The partition and the bottom plate are connected together to a drive cylinder.

[0015] Preferably, clamping holes are provided at the center of the upper cover, partition and bottom plate, and sliding grooves matching the limiting plate are provided on the opposite side of the partition and bottom plate.

[0016] Another technical problem to be solved by the present invention is to provide an operating method for a pneumatic chuck with stable clamping during heavy cutting, comprising the following steps:

[0017] S1: The drive assembly is activated, and the drive cylinder drives the second rack to extend.

[0018] S2: The first rotating part and the second rotating part rotate in opposite directions at the same time, and the chuck body moves along the set track towards the center of the outer cover to clamp the workpiece;

[0019] S3: The first rotating component and the second rotating component simultaneously drive the corresponding auxiliary clamping component to apply rotary cutting forces in different directions to the workpiece, thereby assisting in clamping the workpiece.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The present invention provides a first rotating component and a second rotating component on the upper cover and partition plate respectively. The second rotating component is pushed to rotate by a driving cylinder. The arc groove pushes the slider to drive the chuck body to clamp the workpiece. The first rotating component and the second rotating component move in opposite directions and work together on the high slider to improve the stability of the slider's movement. In addition, the guide rod guides the chuck body to ensure linear movement and firm clamping.

[0022] 2. In this invention, while the first and second rotating parts rotate in opposite directions, the first external tooth and the first rack push the auxiliary clamping part to move. The clamping plate applies reverse shearing forces at both ends of the clamping part, and the two remain at a stable level. A new clamping force is added on the basis of the chuck body to improve the clamping stability. At the same time, the auxiliary clamping part is connected to the buffer, and the high-density damping oil plays a resistance positioning role on the sliding block, further improving the stability of the auxiliary clamping part. Attached Figure Description

[0023] Figure 1 An exploded first-view view of the pneumatic chuck for heavy-duty clamping stability of the present invention;

[0024] Figure 2 This is an exploded second-view view of the pneumatic chuck for heavy-duty clamping stability of the present invention;

[0025] Figure 3 This is a partial cross-sectional view of the pneumatic chuck for stabilizing heavy cutting according to the present invention;

[0026] Figure 4 This is an exploded view of the claw assembly, auxiliary assembly, and drive assembly of the present invention;

[0027] Figure 5 This is a connection diagram of the claw assembly, auxiliary assembly, and drive assembly of the present invention;

[0028] Figure 6 This is a structural diagram of the buffer of the present invention;

[0029] Figure 7 This is a diagram showing the pneumatic chuck of the present invention in a non-operating state;

[0030] Figure 8 This is a diagram showing the working state of the pneumatic chuck of the present invention.

[0031] In the diagram: 1. Outer cover; 111. Clamping hole; 112. Slide groove; 11. Upper cover; 12. Partition plate; 13. Base plate; 2. Claw assembly; 21. Guide rod; 22. Slider; 221. Slide rod; 23. Guide cylinder; 24. Claw body; 3. Auxiliary assembly; 31. First rotating component; 311. First external tooth; 312. Arc groove; 32. Second rotating component; 321. Second external tooth; 33. Buffer; 331. Housing; 332. Sliding block; 3321. Through hole; 333. Guide rod; 34. Auxiliary clamping component; 341. First rack; 342. Clamping plate; 4. Drive assembly; 41. Drive cylinder; 42. Second rack; 43. Limiting plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] To address the issue of insufficient stability in existing technologies that rely solely on jaw clamping for fixation, please refer to... Figures 1-8 This embodiment provides the following technical solution:

[0034] In this embodiment, the pneumatic chuck includes an outer cover 1, and a jaw assembly 2 and an auxiliary assembly 3 are disposed inside the outer cover 1. The auxiliary assembly 3 drives the jaw assembly 2 to move its position. The jaw assembly 2 and the auxiliary assembly 3 simultaneously clamp the workpiece. A drive assembly 4 is connected to the auxiliary assembly 3. The drive assembly 4 is connected to the inner wall of the outer cover 1, and the outer cover 1 provides a movement path guide for the drive assembly 4.

[0035] In this embodiment, the outer cover 1 includes an upper cover 11, a partition 12, and a bottom plate 13. The lower end of the upper cover 11 is fixedly connected to the bottom plate 13. The partition 12 is provided inside the upper cover 11. The upper cover 11 is used to fix the first rotating member 31 and the buffer 33 corresponding to the first rotating member 31. The partition 12 is used to fix the second rotating member 32 and the buffer 33 corresponding to the second rotating member 32. The partition 12 and the bottom plate 13 are connected together to the drive cylinder 41.

[0036] In this embodiment, clamping holes 111 are provided at the center of the upper cover 11, the partition 12 and the bottom plate 13. The clamping holes 111 are used to place the workpiece. The partition 12 and the bottom plate 13 are provided on opposite sides with sliding grooves 112 that match the limiting plate 43. The sliding grooves 112 limit the movement path of the limiting plate 43, ensuring that the second rack 42 moves in a straight line.

[0037] In this embodiment, the chuck assembly 2 includes a guide rod 21, a slider 22, a guide cylinder 23, and a chuck body 24. One end of the guide rod 21 is fixedly connected to the inside of the upper cover 11. The guide rod 21 has an annular distribution structure with one end pointing to the center inside the upper cover 11. The center of the slider 22 is connected to the guide cylinder 23. One end of the guide cylinder 23 is fixedly connected to the chuck body 24. The guide cylinder 23 is movably sleeved with the guide rod 21. The guide cylinder 23 can move along the direction of the guide rod 21. Correspondingly, the guide cylinder 23 drives the chuck body 24 to clamp the workpiece. Under the limitation of the auxiliary component 3, the slider 22 controls the movement position of the guide cylinder 23 along the guide rod 21. Slide rods 221 are provided on both sides of the slider 22. The slide rods 221 are movably connected to the auxiliary component 3.

[0038] In this embodiment, the auxiliary component 3 includes a first rotating member 31, a second rotating member 32, a buffer 33, and an auxiliary clamping member 34. The first rotating member 31 is movably connected to the upper cover 11, and the second rotating member 32 is movably connected to the partition 12. The first rotating member 31 and the second rotating member 32 are symmetrically distributed about the axis of the guide cylinder 23, and both the first rotating member 31 and the second rotating member 32 are movably connected to the slider 22. When the second rotating member 32 rotates, it drives the position of the slider rod 221 on the slider 22. Under the restriction of the guide rod 21, the slider 22 moves along the direction of the guide rod 21. The movement of the slider 22 then reacts to the second rotating member 32, causing the second rotating member 32 to move in tandem with the first rotating member 32. When component 31 rotates in the opposite direction, the rotation of the first rotating component 31 and the second rotating component 32 drives the auxiliary clamping component 34 to move, further clamping the workpiece. The buffer 33 is used to control the stability of the auxiliary clamping component 34. Buffers 33 are respectively provided on one side of the first rotating component 31 and the second rotating component 32. The buffer 33 corresponding to the first rotating component 31 is installed on the inner wall of the upper cover 11, and the buffer 33 corresponding to the second rotating component 32 is installed on the partition 12. The output end of the buffer 33 is connected to the auxiliary clamping component 34. The side wall of the buffer 33 is movably connected to the auxiliary clamping component 34. The auxiliary clamping component 34 intermittently meshes with the corresponding first rotating component 31 and second rotating component 32.

[0039] In this embodiment, the buffer 33 includes a housing 331, a sliding block 332, and a guide rod 333. The sliding block 332 is provided inside the housing 331, and a through hole 3321 is provided on the sliding block 332. High-density damping oil is provided inside the housing 331. The guide rod 333 is connected to the sliding block 332, and the upper end of the guide rod 333 passes through the housing 331. The upper end of the guide rod 333 is fixedly connected to the auxiliary clamping member 34. A limiting groove matching the auxiliary clamping member 34 is provided on the outer wall of the housing 331.

[0040] Specifically, the housing 331 is fixed in position, and the auxiliary clamping member 34 always moves along the limiting groove, driving the guide rod 333 and the sliding block 332 to move within the housing 331. High-density damping oil slowly passes through the through hole 3321, driving the guide rod 333 to move within the housing 331. After the guide rod 333 stops, the high-density damping oil on both sides of the sliding block 332 plays a positioning role for the sliding block 332, preventing the sliding block 332 from moving freely.

[0041] In this embodiment, the first rotating member 31 and the second rotating member 32 are provided with arc-shaped grooves 312. The vertical distance between the arc-shaped grooves 312 and the rotation axis of the first rotating member 31 and the second rotating member 32 gradually increases. The arc-shaped grooves 312 are movably connected to the slide rod 221.

[0042] Specifically, when the second rotating component 32 rotates, the arc-shaped groove 312 moves synchronously. When the slide rod 221 moves from the end of the arc-shaped groove 312 away from the rotation axis of the second rotating component 32 towards the end of the arc-shaped groove 312 closer to the rotation axis of the second rotating component 32, the slide rod 221 moves in the direction of the rotation axis of the second rotating component 32, and the chuck body 24 moves towards the center of the outer cover 1 to clamp the workpiece. Conversely, when the second rotating component 32 rotates in the opposite direction, the slide rod 221 moves from the end of the arc-shaped groove 312 close to the rotation axis of the second rotating component 32 towards the end of the arc-shaped groove 312 away from the rotation axis of the second rotating component 32, the slide rod 221 moves in the opposite direction of the rotation axis of the second rotating component 32, and the chuck body 24 moves towards the edge of the outer cover 1 to release the workpiece.

[0043] In this embodiment, the outer walls of the first rotating member 31 and the second rotating member 32 are provided with first external teeth 311. The auxiliary clamping member 34 is fixedly connected to the outer wall of the first external teeth 311. The first rack 341 and the first external teeth 311 are intermittently engaged. When the first rotating member 31 and the second rotating member 32 rotate, they synchronously drive the first external teeth 311 to rotate. When the first external teeth 311 rotates to engage with the first rack 341, the first external teeth 311 moves, which in turn drives the first rack 341 to move. The lower end of the auxiliary clamping member 34 is provided with a clamping plate 342.

[0044] More specifically, in this embodiment, when the second rotating member 32 rotates clockwise to clamp the workpiece, the first external tooth 311 pushes the first rack 341 to move towards the center position of the outer cover 1, the lower end of the auxiliary clamping member 34 assists in clamping the workpiece, and the clamping plate 342 applies a certain rotary cutting force to the clamping member. Multiple clamping plates 342 together constitute a clockwise rotational force. At the same time, the first rotating member 31 rotates counterclockwise, and the first external tooth 311 corresponding to the first rotating member 31 pushes the first rack 341 to move towards the center position of the outer cover 1. The auxiliary clamping member 34 corresponding to the first rotating member 31 applies a counterclockwise rotary cutting force to the clamping member. The second rotating member 32 and the first rotating member 31 rotate at the same angle, so the rotary cutting forces in the positive and negative directions on the workpiece cancel each other out, thereby stabilizing the workpiece together.

[0045] In this embodiment, when the second rotating member 32 rotates counterclockwise, the first rotating member 31 rotates clockwise to relax the workpiece, the first external tooth 311 pushes the first rack 341 to move in the opposite direction, and the auxiliary clamping member 34 relaxes the workpiece at the same time.

[0046] In this embodiment, the driving assembly 4 includes a driving cylinder 41, a second rack 42, and a limiting plate 43. The driving cylinder 41 is fixed between the partition plate 12 and the bottom plate 13. The output end of the driving cylinder 41 is fixedly connected to the second rack 42. Limiting plates 43 are symmetrically arranged on both sides of the second rack 42. When the driving cylinder 41 works, it drives the second rack 42 to extend in and out. The limiting plate 43 limits the movement trajectory of the second rack 42 to ensure that the second rack 42 moves in a straight line.

[0047] In this embodiment, a second external tooth 321 is provided on the rotation shaft of the second rotating member 32. The second external tooth 321 meshes with the second rack 42. The second rack 42 moves horizontally, pushing the second external tooth 321 to drive the second rotating member 32 to rotate around the rotation shaft, thereby realizing the clockwise and counterclockwise rotation of the second rotating member 32.

[0048] To better demonstrate the operation process of a pneumatic chuck with stable clamping during heavy cutting, this embodiment proposes an operation method for a pneumatic chuck with stable clamping during heavy cutting, including the following steps:

[0049] When the drive assembly 4 is activated, the drive cylinder 41 drives the second rack 42 to extend. The slide groove 112 restricts the movement trajectory of the limiting plate 43, causing the second rack 42 to move in a straight line and preventing the second rack 42 from bending. The first rotating component 31 and the second rotating component 32 rotate in opposite directions simultaneously. Specifically, the second rack 42 drives the second external tooth 321 to rotate, and the arc groove 312 moves synchronously. The slide rod 221 moves towards the rotation axis of the second rotating component 32. Under the guidance of the guide rod 21, the claw body 24 moves outward along the set track to cover 1. When the slider moves in the direction of the center, the slide rod 221 reacts to the first rotating member 31. The first rotating member 31 and the second rotating member 32 move in opposite directions. The slider 22 moves steadily downward with the support of the first rotating member 31 and the second rotating member 32, driving the jaw body 24 to clamp the workpiece. When the first rotating member 31 and the second rotating member 32 rotate in opposite directions at the same time, the first external tooth 311 drives the corresponding auxiliary clamping member 34 to apply a rotary cutting force in different directions to the workpiece. The clamping plate 342 at the lower end of the auxiliary clamping member 34 assists in clamping the workpiece.

[0050] Working principle: A first rotating component 31 and a second rotating component 32 are respectively set on the upper cover 11 and the partition plate 12. The second rotating component 32 is pushed to rotate by the drive cylinder 41. The arc groove 312 pushes the slider 22 to drive the jaw body 24 to clamp the workpiece. The first rotating component 31 and the second rotating component 32 move in opposite directions and work together on the slider 22 to improve the stability of the slider 22's movement. With the guide rod 21 guiding, the jaw body 24 moves linearly and clamps firmly. While the first rotating component 31 and the second rotating component 32 rotate in opposite directions, the first external tooth 311 and the first rack 341 push the auxiliary clamping component 34 to move. The clamping plate 342 applies opposite rotary cutting forces at both ends of the clamping component. The two are kept at a stable level, and a new clamping force is added on the basis of the jaw body 24 to improve the clamping stability. At the same time, the auxiliary clamping component 34 is connected to the buffer 33. The high-density damping oil plays a resistance positioning role for the sliding block 332, further improving the stability of the auxiliary clamping component 34.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic chuck for heavy-duty cutting and stable clamping, comprising an outer cover (1), characterized in that: The outer cover (1) is provided with a jaw assembly (2) and an auxiliary assembly (3). The auxiliary assembly (3) drives the jaw assembly (2) to move. The jaw assembly (2) and the auxiliary assembly (3) simultaneously clamp the workpiece. A drive assembly (4) is connected to the auxiliary assembly (3). The drive assembly (4) is connected to the inner wall of the outer cover (1), and the outer cover (1) provides a guide for the movement path of the drive assembly (4). The jaw assembly (2) includes a guide rod (21), a slider (22), a guide cylinder (23), and a jaw body (24). The center of the slider (22) is... A guide cylinder (23) is connected through the guide cylinder (23), one end of which is fixedly connected to the claw body (24). The guide cylinder (23) is movably sleeved with the guide rod (21). Slide rods (221) are provided on both sides of the slider (22), and the slide rods (221) are movably connected to the auxiliary component (3). The auxiliary component (3) includes a first rotating part (31), a second rotating part (32), a buffer (33), and an auxiliary clamping part (34). The first rotating part (31) and the second rotating part (32) are symmetrically distributed about the axis of the guide cylinder (23), and the first rotating part (31) is symmetrically distributed about the axis of the guide cylinder (23). Both the rotating component (31) and the second rotating component (32) are movably connected to the slider (22). A buffer (33) is provided on one side of each of the first rotating component (31) and the second rotating component (32). An auxiliary clamping component (34) is connected to the output end of the buffer (33). The side wall of the buffer (33) is movably connected to the auxiliary clamping component (34). The auxiliary clamping component (34) intermittently engages with the corresponding first rotating component (31) and second rotating component (32). Arc-shaped grooves (312) are provided on the first rotating component (31) and the second rotating component (32). (312) The vertical distance from the rotation axis of the first rotating part (31) and the second rotating part (32) gradually increases. The arc groove (312) is movably connected to the slide rod (221). The outer walls of the first rotating part (31) and the second rotating part (32) are provided with the first external tooth (311). The auxiliary clamping part (34) is fixedly connected to the outer wall of the first external tooth (311). The first rack (341) and the first external tooth (311) are intermittently meshed. The lower end of the auxiliary clamping part (34) is provided with a clamping plate (342).

2. The pneumatic chuck for heavy-duty cutting and stable clamping according to claim 1, characterized in that: The drive assembly (4) includes a drive cylinder (41), a second rack (42) and a limiting plate (43). The output end of the drive cylinder (41) is fixedly connected to the second rack (42), and the limiting plates (43) are symmetrically arranged on both sides of the second rack (42).

3. The pneumatic chuck for stable heavy-duty cutting according to claim 2, characterized in that: The second rotating member (32) has a second external tooth (321) on its rotating shaft, and the second external tooth (321) meshes with the second rack (42).

4. The pneumatic chuck for stable heavy-duty cutting according to claim 3, characterized in that: The outer cover (1) includes an upper cover (11), a partition (12) and a bottom plate (13). The lower end of the upper cover (11) is fixedly connected to the bottom plate (13). The partition (12) is provided inside the upper cover (11). The upper cover (11) is used to fix the first rotating part (31) and the buffer (33) corresponding to the first rotating part (31). The partition (12) is used to fix the second rotating part (32) and the buffer (33) corresponding to the second rotating part (32). The partition (12) and the bottom plate (13) are connected together to a driving cylinder (41).

5. The pneumatic chuck for stable heavy-duty cutting according to claim 4, characterized in that: The upper cover (11), partition (12) and bottom plate (13) are all provided with clamping holes (111) at their center positions, and the partition (12) and bottom plate (13) are provided with sliding grooves (112) that match the limiting plate (43) on opposite sides.

6. A method for operating a pneumatic chuck with stable clamping for heavy cutting as described in claim 5, characterized in that, Includes the following steps: S1: The drive assembly (4) is activated, and the drive cylinder (41) drives the second rack (42) to extend; S2: The first rotating part (31) and the second rotating part (32) rotate in opposite directions at the same time, and the chuck body (24) moves along the set track towards the center of the outer cover (1) to clamp the workpiece; S3: The first rotating component (31) and the second rotating component (32) simultaneously drive the corresponding auxiliary clamping component (34) to apply rotary cutting forces in different directions to the workpiece, thereby assisting in clamping the workpiece.

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