Air oil pressure double-cylinder clamp

Abstract

The utility model discloses an air oil pressure double-cylinder clamp, and relates to the technical field of clamps. The utility model comprises a chassis, and an upper cylinder body is fixedly arranged on the chassis. According to the utility model, the clamping and loosening processes of the clamp are respectively controlled through the air hole A and the air hole B, so that a workpiece is quickly loosened, the auxiliary time is effectively shortened, and the production efficiency is improved; the double pistons are adopted through the synergistic effect of the first piston and the second piston, the clamping force is increased by 100% compared with a single-piston clamp, the more stable clamping effect is provided for workpieces, the double-piston clamp is particularly suitable for the workpieces with the high machining precision requirement and large stress, the workpiece machining error is effectively reduced, and the product quality is improved; by means of accurate matching of the spring collet chuck and the sliding sleeve, when air enters the air hole B, the sliding sleeve is forcibly separated from the spring collet chuck, the adhesion risk between the spring collet chuck and the sliding sleeve is avoided, it is ensured that a workpiece can be reliably loosened every time, the machining quality problem caused by incomplete loosening of the clamp is avoided, and the production yield is improved.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically to a pneumatic-hydraulic double-cylinder clamp. Background Technology

[0002] In the field of machining, workpiece clamping and positioning are crucial steps.

[0003] Traditional clamps typically use a single hydraulic or pneumatic cylinder for drive, resulting in limited clamping force and relatively small thrust for the same volume, making it difficult to meet the demands of high-efficiency machining. Furthermore, traditional clamps have complex structures, are inconvenient to install and maintain, occupy a large space, and are costly. Especially on highly automated production lines, traditional clamps have low automation levels and are difficult to integrate effectively with modern machining equipment, thus limiting the improvement of production efficiency.

[0004] Therefore, a pneumatic-hydraulic dual-cylinder clamp is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a pneumatic-hydraulic dual-cylinder clamp in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A pneumatic-hydraulic dual-cylinder clamp includes a chassis, on which an upper cylinder is fixedly mounted. A first piston and a second piston are slidably mounted within the upper cylinder. A sliding sleeve is movably inserted into the upper cylinder. The first piston is fixedly connected to the sliding sleeve. A fixing ring is fixedly mounted on the end face of the chassis. A spring collet is fixedly mounted on the fixing ring, and the sliding sleeve cooperates with the spring collet. A secondary claw is provided inside the spring collet. An air hole A is opened on the surface of the chassis, and an air hole B is opened on the surface of the upper cylinder. A groove is opened on the end face of the chassis, and a spring is connected to the groove and the end face of the first piston.

[0008] Furthermore, the first piston and the second piston can move up and down in the upper cylinder. When air enters through the air hole A, the first piston and the sliding sleeve move upward, and the sliding sleeve compresses the spring collet to contract.

[0009] Furthermore, when air enters through the air hole B, the sliding sleeve moves downward and separates from the spring collet, and the spring collet opens under its own elastic force.

[0010] Furthermore, the spring is used to provide elastic force so that the sliding sleeve and the spring collet maintain their initial positions when there is no air pressure.

[0011] Furthermore, the secondary jaw is connected to the spring collet to assist in clamping and positioning the workpiece.

[0012] Furthermore, oil seals are provided at the gaps between its components for sealing.

[0013] The beneficial effects of this utility model are as follows:

[0014] By controlling the clamping and releasing processes of the fixture through air holes A and B respectively, the workpiece can be released quickly, effectively shortening auxiliary time and improving production efficiency.

[0015] By employing a dual-piston system through the coordinated action of the first and second pistons, the clamping force is increased by 100% compared to single-piston fixtures, providing a more stable clamping effect for the workpiece. This is especially suitable for workpieces with high machining accuracy requirements and large forces, effectively reducing workpiece machining errors and improving product quality.

[0016] By utilizing the precise cooperation between the spring collet and the sliding sleeve, when air is introduced through the air hole B, the sliding sleeve is forcibly separated from the spring collet, avoiding the risk of adhesion between the spring collet and the sliding sleeve. This ensures that the workpiece can be reliably released each time, avoids processing quality problems caused by incomplete release of the clamp, and improves the production yield.

[0017] By working together with the secondary jaws and spring collets, not only is the clamping force enhanced, but additional positioning support points are also provided for the workpiece, improving the workpiece clamping stability and effectively suppressing minor displacements or vibrations of the workpiece during processing, thus further ensuring processing accuracy. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a side view of the present invention;

[0020] Figure 3 This is an exploded view of this utility model;

[0021] Figure 4 This is a cross-sectional view of the present invention;

[0022] Reference numerals in the attached diagram: 1. Chassis; 2. Upper cylinder; 3. First piston; 4. Second piston; 5. Sliding sleeve; 6. Retaining ring; 7. Spring collet; 8. Secondary claw; 9. Spring; 10. Air port A; 11. Air port B. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. 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.

[0027] like Figures 1 to 4 As shown, a pneumatic-hydraulic dual-cylinder clamp includes a chassis 1, an upper cylinder 2 fixedly mounted on the chassis 1, a first piston 3 and a second piston 4 slidably mounted inside the upper cylinder 2, a sliding sleeve 5 movably inserted into the upper cylinder 2, the first piston 3 and the sliding sleeve 5 being fixedly connected, a fixing ring 6 fixedly mounted on the end face of the chassis 1, a spring collet 7 fixedly mounted on the fixing ring 6, and the sliding sleeve 5 cooperating with the spring collet 7, a secondary claw 8 provided inside the spring collet 7, an air hole A10 opened on the surface of the chassis 1, an air hole B11 opened on the surface of the upper cylinder 2, a groove opened on the end face of the chassis 1, and a spring 9 connected to the groove and the end face of the first piston 3. More specifically, the entire pneumatic-hydraulic dual-cylinder clamp is fixed on the working platform via the chassis 1. When high-pressure gas is introduced through the air port A10, the gas enters the upper cylinder 2 and is located below the first piston 3, pushing the first piston 3 and the sliding sleeve 5 to move upward. This causes the sliding sleeve 5 to press the spring collet 7 through its tapered fit, causing its inner hole to contract and thus clamping the workpiece. When high-pressure gas is introduced through the air port B11, the gas enters the air chamber in the upper cylinder 2 but is not located above the sliding sleeve 5, pushing the sliding sleeve 5 to move downward. The sliding sleeve 5 separates from the spring collet 7, and the spring collet 7 opens under its own elastic force, releasing the workpiece. The entire process realizes the automatic clamping and releasing of the workpiece.

[0028] The first piston 3 and the second piston 4 can move up and down within the upper cylinder 2. When air enters through the air port A10, the first piston 3 and the sliding sleeve 5 move upward, and the sliding sleeve 5 compresses the spring collet 7 to contract. More specifically, the first piston 3 and the second piston 4 can move up and down within the upper cylinder 2. When air enters through the air port A10, high-pressure gas enters the air chamber below the first piston 3, pushing the first piston 3 and the sliding sleeve 5 upward. The sliding sleeve 5, through its tapered fit, compresses the spring collet 7, causing it to clamp the workpiece. This dual-piston design increases the clamping force and improves the clamping effect of the fixture.

[0029] When air enters through vent B11, the sliding sleeve 5 moves downward and separates from the spring collet 7. The spring collet 7 then opens under its own elastic force. More specifically, when air enters through vent B11, high-pressure gas enters the air chamber above the sliding sleeve 5, pushing the sliding sleeve 5 downward. The sliding sleeve 5 separates from the spring collet 7, and the spring collet 7 opens under its own elastic force, releasing the workpiece. This ensures that the workpiece can be completely released each time, improving the reliability and working efficiency of the fixture.

[0030] Spring 9 provides elastic force to keep the sliding sleeve 5 and spring collet 7 in their initial positions when there is no air pressure. More specifically, spring 9 provides elastic force between the sliding sleeve 5 and the retaining ring 6. When there is no air pressure, spring 9 keeps the sliding sleeve 5 and spring collet 7 in their initial positions, ensuring the stability and reliability of the clamp in the non-working state. At the same time, spring 9 can also buffer the impact force of the clamp during operation, extending the service life of the clamp.

[0031] The secondary jaw 8 is connected to the spring collet 7 and is used to assist in clamping and positioning the workpiece. More specifically, during the clamping process, the secondary jaw 8 can provide additional clamping force to ensure that the workpiece remains stable during processing. At the same time, the secondary jaw 8 helps to improve the versatility of the fixture, enabling it to adapt to workpieces of different shapes and sizes.

[0032] Each component has an oil seal installed at its gaps. More specifically, the oil seals are used to seal the gaps between the components, such as between the upper cylinder 2 and the sliding sleeve 5, and between the first piston 3 and the second piston 4 and the upper cylinder 2.

[0033] In summary: The entire pneumatic-hydraulic dual-cylinder clamp is fixed on the working platform by the chassis 1. When high-pressure gas is introduced into the air port A10, the gas enters the upper cylinder 2 and is located below the first piston 3, pushing the first piston 3 and the sliding sleeve 5 to move upward. This causes the sliding sleeve 5 to press the spring collet 7 through the tapered fit, causing its inner hole to contract and thus clamping the workpiece. When high-pressure gas is introduced into the air port B11, the gas enters the air chamber in the upper cylinder 2 but is not located above the sliding sleeve 5, pushing the sliding sleeve 5 to move downward. The sliding sleeve 5 separates from the spring collet 7, and the spring collet 7 opens under its own elastic force, releasing the workpiece. The entire process realizes the automatic clamping and releasing of the workpiece.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pneumatic-hydraulic double-cylinder clamp, characterized in that, Includes a chassis (1), on which an upper cylinder (2) is fixedly mounted, wherein a first piston (3) and a second piston (4) are slidably mounted in the upper cylinder (2), and a sliding sleeve (5) is movably inserted into the upper cylinder (2). The first piston (3) is fixedly connected to the sliding sleeve (5). A fixing ring (6) is fixedly mounted on the end face of the chassis (1), and a spring collet (7) is fixedly mounted on the fixing ring (6). The sliding sleeve (5) cooperates with the spring collet (7). A secondary claw (8) is provided in the spring collet (7). An air hole A (10) is opened on the surface of the chassis (1), and an air hole B (11) is opened on the surface of the upper cylinder (2). A groove is opened on the end face of the chassis (1), and a spring (9) is connected in the groove and on the end face of the first piston (3).

2. The pneumatic-hydraulic double-cylinder clamp according to claim 1, characterized in that, The first piston (3) and the second piston (4) can move up and down in the upper cylinder (2). When the air hole A (10) is inlet, the first piston (3) and the sliding sleeve (5) move upward, and the sliding sleeve (5) compresses the spring collet (7) to contract.

3. The pneumatic-hydraulic double-cylinder clamp according to claim 2, characterized in that, When air enters through the air hole B (11), the sliding sleeve (5) moves downward and separates from the spring collet (7), and the spring collet (7) opens under its own elastic force.

4. The pneumatic-hydraulic double-cylinder clamp according to claim 1, characterized in that, The spring (9) is used to provide elastic force so that the sliding sleeve (5) and the spring collet (7) remain in their initial positions when there is no air pressure.

5. A pneumatic-hydraulic double-cylinder clamp according to claim 1, characterized in that, The auxiliary claw (8) is connected to the spring collet (7) and is used to assist in clamping and positioning the workpiece.

6. The pneumatic-hydraulic double-cylinder clamp according to claim 1, characterized in that, Each component has an oil seal installed at its gaps for sealing.

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