Double-sided pneumatic chuck

Abstract

The utility model discloses a double -sided pneumatic chuck, the utility model discloses adopt double -sided clamping frame structure and pneumatic synchronous control technology, and the integral molding design of combining limit seat, rotate gas ring synchronous drive, effectively solve the efficiency and quality stability of lifting shaft class product processing. Utility model discloses limit seat, and the through -hole for the product is equipped with in the middle of limit seat, and the front end and rear end of limit seat are equipped with front jaw subassembly and rear jaw subassembly respectively, and the inside of limit seat is equipped with first drive subassembly, and first drive subassembly includes air inlet valve, first cylinder and connecting rod, and air inlet valve is used for controlling the action of first cylinder, and the movable end of first cylinder is connected with connecting rod transmission, and the one end of connecting rod is away from first cylinder and is linked with front jaw subassembly, is used for driving front jaw subassembly to limit and hold one end of product, and rear jaw subassembly is used for assisting holding the other end of product with front jaw subassembly. The utility model discloses be applied to the technical field of chuck.

Description

Technical Field

[0001] This invention relates to the field of chuck technology, and in particular to a double-sided pneumatic chuck. Background Technology

[0002] In the field of machining, the clamping technology for shaft parts directly affects machining accuracy and efficiency. Traditional single-sided chucks typically employ a single-sided clamping structure, which suffers from defects such as uneven clamping force distribution and insufficient positioning accuracy. Unilateral force can easily cause long shaft parts to sag and vibrate due to their own weight or cutting forces, affecting surface finish. Further attempts to use gas-driven double-sided clamping components are prone to defects such as poor synchronization and weak durability.

[0003] To address the aforementioned problems, this utility model provides a double-sided pneumatic chuck. This utility model adopts a double-sided clamping structure and pneumatic synchronous control technology, combined with the integrated molding design of the limit seat and synchronous drive of the rotating air ring, effectively solving the above technical problems and improving the efficiency and quality stability of shaft product processing. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a double-sided pneumatic chuck. This utility model adopts a double-sided clamping structure and pneumatic synchronous control technology, combined with the integrated molding design of the limit seat and synchronous drive of the rotating air ring, effectively solving the above-mentioned technical problems and improving the efficiency and quality stability of shaft product processing.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This utility model provides a double-sided pneumatic chuck, which includes a limiting seat with a through hole in the middle for a product to pass through. The front and rear ends of the limiting seat are respectively provided with a front jaw assembly and a rear jaw assembly. The limiting seat contains a first driving assembly, which includes an air inlet valve, a first cylinder, and a connecting rod. The air inlet valve is used to control the action of the first cylinder. The movable end of the first cylinder is connected to the connecting rod. The end of the connecting rod away from the first cylinder is linked with the front jaw assembly to drive the front jaw assembly to limit and clamp one end of the product. The rear jaw assembly is used to cooperate with the front jaw assembly to assist in clamping the other end of the product.

[0007] As described above, a double-sided pneumatic chuck includes a front jaw assembly comprising multiple sliding seats and a sliding plate. The sliding plate is fixed to the front end face of the limiting seat. The sliding plate is provided with slide rails that are uniformly distributed around the circumference and adapted to the sliding seats. The sliding seats are provided with a front jaw element for directly clamping products on the side away from the center of the sliding plate.

[0008] As described above, in a double-sided pneumatic chuck, the rear gripper assembly includes a mounting plate, at least two cylinder mounting seats, and at least two roller seats. The mounting plate is fixed to the rear end face of the limiting seat. The cylinder mounting seats and roller seats are alternately and evenly distributed along the circumference of the mounting plate. A second cylinder is provided on the cylinder mounting seat, and the end of the second cylinder is provided with a rear gripper element for assisting in clamping the product. The roller seats are provided with guide rollers for assisting in supporting the product and facilitating its movement.

[0009] In the double-sided pneumatic chuck described above, the central axes of the front jaw assembly and the rear jaw assembly coincide to ensure coaxiality of product clamping.

[0010] As described above, in a double-sided pneumatic chuck, the limiting seat is integrally cast from ductile iron and has an anti-rust coating on its outer surface.

[0011] As described above, in a double-sided pneumatic chuck, the front gripper element is provided with large gripping teeth and small gripping teeth, and the gripping surfaces of the large gripping teeth and small gripping teeth that contact the product are provided with several anti-slip protrusions.

[0012] In the double-sided pneumatic chuck described above, the air intake valve is a rotating air ring, which synchronously controls the actions of the first cylinder and the second cylinder.

[0013] As described above, in a double-sided pneumatic chuck, a cylinder cover is provided between the rotating air ring and the limiting seat, and the cylinder cover is used to achieve a sealed connection between the rotating air ring and the limiting seat.

[0014] The beneficial effects of this utility model are as follows: This utility model uses a limiting seat as the core support structure. The middle part plays a guiding and limiting role for shaft products and fixes and supports the front jaw assembly, the rear jaw assembly, and the first drive assembly. The front jaw actively clamps the front end of the product, and the rear jaw assists in clamping the rear end. The double-sided cooperative clamping realizes product positioning and guiding support. The air inlet valve provides a power source for the first cylinder. The first cylinder pushes the connecting rod to convert linear motion into linkage of the front jaw, driving the front jaw element to open and close. Through the simple structural design of double-sided clamping and pneumatic drive, the problem of insufficient clamping force and low positioning accuracy of traditional single-sided chucks is solved, realizing efficient and accurate clamping of shaft products. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a first structural schematic diagram of the present invention;

[0018] Figure 2 This is a half-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the second structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the front gripper assembly;

[0021] Figure 5 This is a schematic diagram of the front gripper component;

[0022] Figure 6 This is a structural diagram of the rear gripper assembly;

[0023] Figure 7 This is a structural diagram of the cylinder mounting base and roller base. Detailed Implementation

[0024] 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.

[0025] like Figure 1 and Figure 7As shown, in this embodiment, the present invention includes a limiting seat 1. The limiting seat 1 has a through hole 4 in the middle for the product to pass through. The front and rear ends of the limiting seat 1 are respectively provided with a front claw assembly 2 and a rear claw assembly 3. The limiting seat 1 is provided with a first driving assembly. The first driving assembly includes an air intake valve 10, a first cylinder 11 and a connecting rod 12. The air intake valve 10 is used to control the action of the first cylinder 11. The movable end of the first cylinder 11 is connected to the connecting rod 12. The end of the connecting rod 12 away from the first cylinder 11 is linked with the front claw assembly 2 to drive the front claw assembly 2 to limit and clamp one end of the product. The rear claw assembly 3 is used to cooperate with the front claw assembly 2 to assist in clamping the other end of the product. Therefore, the limiting seat 1 is the core support structure. Its middle part guides and limits the product, and also supports and fixes the front jaw assembly 2, the rear jaw assembly 3 and the first drive assembly. The front jaw assembly 2 is used to actively clamp the front end of the product, and the rear jaw assembly 3 is used to assist in clamping the rear end of the product. Together with the front jaw assembly 2, they achieve double-sided positioning of the product and also provide guidance and support. The air intake valve 10 provides a power source to the first cylinder 11, thereby indirectly realizing precise control of the clamping action. The first cylinder 11 pushes the connecting rod 12, and the connecting rod 12 converts the linear motion of the first cylinder 11 into the linkage of the front jaw assembly 2, driving the jaw elements to open and close.

[0026] This utility model, through a simple structural design, adopts double-sided clamping and pneumatic drive, which solves the problems of insufficient clamping force and low positioning accuracy of traditional single-sided chucks, and meets the requirements for efficient and precise clamping of shaft products.

[0027] Furthermore, in this embodiment, the front gripper assembly 2 includes multiple sliding seats 20 and a sliding plate 21. The sliding plate 21 is fixed to the front end face of the limiting seat 1. The sliding plate 21 is circumferentially evenly provided with slide rails adapted to the sliding seats 20. The sliding seats 20 are provided with a front gripper element 22 for directly clamping the product on the side away from the center of the sliding plate 21. It can be seen that the sliding plate 21 provides support and fixation for the multiple sliding seats 20 and multiple slide rails. The slide rails constrain the trajectory of the sliding seats 20, and the circumferentially even distribution of the slide rails ensures that the sliding seats move synchronously in the radial direction, realizing a uniform distribution of clamping force and avoiding deformation of the product due to excessive local force. The sliding seats 20 serve to install the front gripper element 22. The radial opening and closing is achieved by sliding on the slide rails of the sliding seat 21, thereby clamping the front end of the product. The front gripper element 22 is the component that directly clamps the product, and it is provided with clamping teeth and anti-slip protrusions to achieve stable clamping.

[0028] Furthermore, in this embodiment, the rear gripper assembly 3 includes a mounting plate 30, at least two cylinder mounting seats 31, and at least two roller seats 32. The mounting plate 30 is fixed to the rear end face of the limiting seat 1. The cylinder mounting seats 31 and roller seats 32 are alternately and evenly distributed along the circumference of the mounting plate 30. The cylinder mounting seats 31 are provided with a second cylinder 310. The end of the second cylinder 310 is provided with a rear gripper element 311 for assisting in gripping the product. The roller seats 32 are provided with guide rollers 320 for assisting in supporting the product and facilitating its movement. Therefore, the mounting plate 30 provides support and fixation for the cylinder mounting seat 31 and the roller seat 32. The cylinder mounting seat 31 provides support and fixation for the second cylinder 310. The second cylinder 310 provides support and drive for the rear gripper element 311. The rear gripper element 311 clamps the other end of the product, forming a double-sided positioning with the front gripper assembly 2. The roller seat 32 limits the guide roller 320. The guide roller 320 provides auxiliary support and guidance for the product, reducing frictional resistance during product movement and preventing vibration or sagging during processing. The rear gripper assembly, through the composite functional design of "cylinder-driven clamping + roller-guided support", achieves the technical effects of uniform clamping force distribution, smooth movement, and accurate positioning, solving the stability problem of traditional chucks in clamping long shaft parts.

[0029] Furthermore, in this embodiment, the central axes of the front jaw assembly 2 and the rear jaw assembly 3 coincide to ensure coaxiality in product clamping. This design is a core technology for achieving high-precision and high-stability clamping with a double-sided pneumatic chuck; axial misalignment would cause uneven centrifugal or inertial forces, exacerbating vibration.

[0030] Furthermore, in this embodiment, the limiting seat 1 is integrally cast from ductile iron, and its outer surface is provided with an anti-rust coating. It can be seen that the limiting seat 1 is made of ductile iron because it has high tensile strength and yield strength, which can prevent deformation or fracture due to insufficient strength. The integral casting process can eliminate gaps or stress concentration points that may be generated by traditional processes such as welding and bolting, avoiding local overload or connection failure. The anti-rust coating on its surface isolates the substrate from corrosive media, preventing electrochemical corrosion or chemical erosion and extending the service life of the limiting seat 1.

[0031] Furthermore, in this embodiment, the front gripper element 22 is provided with large and small gripping teeth, and the gripping surfaces of both the large and small gripping teeth that contact the product are provided with several anti-slip protrusions. Thus, the front gripper element 22 adopts a double-tooth structure, increasing the contact area with shaft-type products and reducing pressure per unit area, effectively dispersing stress. The front gripper element has a detachable structure, and the large and small gripping teeth can be quickly replaced with bolts to adapt to different processing stages. The anti-slip protrusions enhance the friction of the gripping teeth.

[0032] Furthermore, in this embodiment, the intake valve 10 is a rotating air ring, which synchronously controls the actions of the first cylinder 11 and the second cylinder 310. Thus, the rotating air ring is a pneumatic precision synchronous control component. It has a synchronous control function, ensuring that the first cylinder 11 (driving the front gripper) and the second cylinder 310 (driving the rear gripper) simultaneously receive air pressure signals through its single-point air intake and multi-point uniform distribution characteristics. This achieves precise control of "simultaneous start and synchronous positioning," meeting the requirements of high-precision machining.

[0033] Furthermore, in this embodiment, a cylinder cover is provided between the rotating air ring and the limiting seat 1. The cylinder cover is used to achieve a sealed connection between the rotating air ring and the limiting seat 1. Therefore, the cylinder cover achieves a sealed connection between the rotating air ring and the limiting seat 1, preventing gas leakage and pressure loss, ensuring stable air pressure, synchronized operation, and equipment durability. It also effectively isolates external contaminants, protects pneumatic components from corrosion, and extends equipment life.

[0034] Example 2

[0035] Furthermore, in this embodiment, the rear gripper assembly 3 includes a mounting plate 30, at least two mounting seats, at least two roller seats 32, and a clamping lever. A rear gripper element 311 is provided on the movable end of the mounting seat, and the clamping lever is used to drive the movable end of the mounting seat to extend and retract. Therefore, the operator can manually and precisely control the extension and retraction stroke of the movable end of the mounting seat via the clamping lever, realizing the radial opening and closing adjustment of the rear gripper element 311. This manual method simplifies the structural complexity and avoids potential response delays in the pneumatic system, ensuring the immediacy and accuracy of the clamping force adjustment.

[0036] The working principle of this utility model is as follows:

[0037] The limiting seat 1 is fixedly installed on the platform. The shaft part passes through the front jaw assembly 2, the middle of the limiting seat 1 and the rear jaw assembly 3. When the start button is pressed, the rotating air ring synchronously drives the first cylinder 11 and the second cylinder 310. The front jaw element 22 provides active clamping force to the product. The guide roller 320 of the rear jaw cooperates with the rear jaw element 311 to achieve auxiliary support and dynamic adjustment, together fulfilling the requirements of stable clamping and precision machining of the product.

[0038] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0039] The above embodiments do not limit the scope of protection of this utility model. All equivalent modifications and variations made by those skilled in the art without departing from the overall concept of this utility model shall still fall within the scope of this utility model.

Claims

1. A double-sided pneumatic chuck, characterized in that, It includes a limiting seat (1), the limiting seat (1) has a through hole (4) in the middle for the product to pass through, the front and rear ends of the limiting seat (1) are respectively provided with a front jaw assembly (2) and a rear jaw assembly (3), the limiting seat (1) is provided with a first drive assembly inside, the first drive assembly includes an air intake valve (10), a first cylinder (11) and a connecting rod (12), the air intake valve (10) is used to control the action of the first cylinder (11), the movable end of the first cylinder (11) is connected to the connecting rod (12) in a transmission, the end of the connecting rod (12) away from the first cylinder (11) is linked with the front jaw assembly (2) to drive the front jaw assembly (2) to limit and clamp one end of the product, and the rear jaw assembly (3) is used to cooperate with the front jaw assembly (2) to assist in clamping the other end of the product.

2. A double-sided pneumatic chuck according to claim 1, characterized in that: The front gripper assembly (2) includes multiple sliding seats (20) and a sliding plate (21). The sliding plate (21) is fixed to the front end face of the limiting seat (1). The sliding plate (21) is evenly provided with slide rails that are adapted to the sliding seats (20) in the circumferential direction. The sliding seat (20) is provided with a front gripper element (22) for directly gripping the product on the side away from the center of the sliding plate (21).

3. A double-sided pneumatic chuck according to claim 1, characterized in that: The rear gripper assembly (3) includes a mounting plate (30), at least two cylinder mounting seats (31) and at least two roller seats (32). The mounting plate (30) is fixed to the rear end face of the limiting seat (1). The cylinder mounting seats (31) and roller seats (32) are alternately and evenly distributed along the circumference of the mounting plate (30). The cylinder mounting seats (31) are provided with a second cylinder (310). The end of the second cylinder (310) is provided with a rear gripper element (311) for assisting in gripping the product. The roller seats (32) are provided with guide rollers (320) for assisting in supporting the product and facilitating its movement.

4. A double-sided pneumatic chuck according to claim 1, characterized in that: The central axes of the front jaw assembly (2) and the rear jaw assembly (3) are aligned to ensure coaxiality of the product clamping.

5. A double-sided pneumatic chuck according to claim 1, characterized in that: The limiting seat (1) is integrally cast from ductile iron and has an anti-rust coating on its outer surface.

6. A double-sided pneumatic chuck according to claim 2, characterized in that: The front gripper element (22) is provided with large gripping teeth and small gripping teeth, and the gripping surfaces of the large gripping teeth and small gripping teeth that contact the product are provided with several anti-slip protrusions.

7. A double-sided pneumatic chuck according to claim 3, characterized in that: The intake valve (10) is a rotating air ring, which synchronously controls the actions of the first cylinder (11) and the second cylinder (310).

8. A double-sided pneumatic chuck according to claim 3, characterized in that: The rear gripper assembly (3) includes a mounting plate (30), at least two mounting seats, at least two roller seats (32) and a clamping rod. The movable end of the mounting seat is provided with a rear gripper element (311), and the clamping rod is used to drive the movable end of the mounting seat to extend and retract.

9. A double-sided pneumatic chuck according to claim 7, characterized in that: A cylinder cover is provided between the rotating air ring and the limiting seat (1), and the cylinder cover is used to achieve a sealed connection between the rotating air ring and the limiting seat (1).

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