Vacuum chuck for numerical control machining

Abstract

The utility model discloses a vacuum chuck for numerical control machining, which belongs to the technical field of numerical control machining fixtures and comprises a connecting plate, a vertical rod is arranged at the bottom of the connecting plate, a fixing plate is arranged at the bottom end of the vertical rod, a sliding hole is formed in the surface of the fixing plate, a connecting rod is arranged on the inner side of the sliding hole, and a chuck body is arranged at the bottom of the connecting rod. A suction hole is formed in the bottom of the suction cup body, a silicon rubber sleeve is arranged at the bottom of the suction hole, a spring is arranged on the surface of the connecting rod, a limiting block is arranged at the top end of the connecting rod, a limiting rod is arranged at the top of the limiting block, a clamping air cylinder is arranged at the bottom of the connecting plate, and a clamping plate is arranged at the bottom of the clamping air cylinder. Through the arrangement of the two sets of lifting connecting rods, up-down sliding adjustment can be conducted according to special-shaped workpieces, objects subjected to curved surface machining, objects with surface height differences and the like, the bottom of the suction cup body is attached to the surfaces of the objects all the time, and the effect that the device can conduct self-adaptive adjustment adsorption on the different objects is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of CNC machining fixture technology, specifically relating to a vacuum chuck for CNC machining. Background Technology

[0002] Vacuum chucks for CNC machining are tools that ensure a tight adhesion between two objects using vacuum levels. They are widely used in industrial and everyday life scenarios. In industrial production, by adjusting the vacuum level of the chuck, it can easily complete handling and migration tasks, providing convenient support for automated and mechanized production processes. Vacuum chucks act as clamps in CNC machining centers. Some workpieces require high surface smoothness, making conventional CNC milling machine clamps unsuitable; in these cases, vacuum chucks come in handy. A CNC vacuum chuck is a special type of vacuum chuck that uses a vacuum generator and a switch; its suction principle is the same as that of a rubber vacuum chuck.

[0003] Existing vacuum chucks for CNC machining still have some shortcomings. Most vacuum chucks can only adsorb and fix relatively smooth objects, and are difficult to adapt to irregularly shaped workpieces or objects with curved surfaces. They have certain limitations and their performance is not good. Therefore, we propose a vacuum chuck for CNC machining. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum chuck for CNC machining to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum chuck for CNC machining, comprising a connecting plate, a vertical rod at the bottom of the connecting plate, a fixing plate at the bottom end of the vertical rod, a sliding hole on the surface of the fixing plate, a connecting rod inside the sliding hole, a suction cup body at the bottom of the connecting rod, a suction hole at the bottom of the suction hole, a silicone sleeve at the bottom of the suction hole, a spring on the surface of the connecting rod, a limiting block at the top of the connecting rod, a limiting rod at the top of the limiting block, a clamping cylinder at the bottom of the connecting plate, a clamping plate at the bottom of the clamping cylinder, a vacuum generator at the bottom of the fixing plate, a connecting pipe at the bottom of the vacuum generator, and an air valve at the end of the connecting pipe.

[0006] Preferably, the connecting plate and the fixing plate are fixedly connected by four sets of uprights, and the surface of the fixing plate is provided with two sets of sliding holes, through which a connecting rod slides through the inner side of the sliding holes.

[0007] Preferably, a suction cup body is fixedly connected to the bottom of the connecting rod, and suction holes are provided at both ends of the bottom of the suction cup body. A silicone sleeve is fixedly installed around the bottom of the suction hole.

[0008] Preferably, a spring is sleeved and connected to the surface of the connecting rod, the top end of the spring is fixedly connected to the bottom of the fixing plate, the bottom end of the spring is fixedly connected to the bottom end surface of the connecting rod, a limit block is fixedly installed at the top end of the connecting rod, and a limit rod is fixedly installed at the middle of the top end of the limit block.

[0009] Preferably, a clamping cylinder is fixedly installed on the bottom center of the connecting plate, and two sets of clamping plates are connected to the bottom output end of the clamping cylinder.

[0010] Preferably, a vacuum generator is fixedly installed at the bottom of the fixing plate, and the vacuum generator is connected to the two sets of suction cup bodies through a connecting pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] With two sets of adjustable linkages, the suction cup body can be adjusted up and down to accommodate irregularly shaped workpieces, objects with curved surfaces, and objects with varying surface heights, ensuring that the bottom of the suction cup body always adheres to the surface of the object. This allows the device to adaptively adjust the adsorption effect for different objects. Attached Figure Description

[0013] Figure 1 This is a front structural diagram of the present invention;

[0014] Figure 2 This is a side view of the present invention.

[0015] Figure 3 This is a schematic diagram of the suction cup main structure of this utility model.

[0016] In the diagram: 1. Connecting plate; 2. Upright pole; 3. Fixing plate; 4. Sliding hole; 5. Connecting rod; 6. Suction cup body; 7. Suction hole; 8. Silicone sleeve; 9. Spring; 10. Limiting block; 11. Limiting rod; 12. Clamping cylinder; 13. Clamping plate; 14. Vacuum generator; 15. Connecting pipe; 16. Air valve. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-3This utility model provides a technical solution: a vacuum suction cup for CNC machining, including a connecting plate 1, a vertical rod 2 at the bottom of the connecting plate 1, a fixing plate 3 at the bottom end of the vertical rod 2, a sliding hole 4 on the surface of the fixing plate 3, a connecting rod 5 inside the sliding hole 4, a suction cup body 6 at the bottom of the connecting rod 5, a suction hole 7 at the bottom of the suction hole 7, a silicone sleeve 8 at the bottom of the suction hole 7, a spring 9 on the surface of the connecting rod 5, a limiting block 10 at the top end of the connecting rod 5, a limiting rod 11 at the top end of the limiting block 10, a clamping cylinder 12 at the bottom of the connecting plate 1, a clamping plate 13 at the bottom of the clamping cylinder 12, a vacuum generator 14 at the bottom of the fixing plate 3, a connecting pipe 15 at the bottom of the vacuum generator 14, and an air valve 16 at the end of the connecting pipe 15.

[0019] Specifically, the connecting plate 1 and the fixed plate 3 are fixedly connected by four sets of uprights 2. Two sets of sliding holes 4 are opened through the surface of the fixed plate 3. A connecting rod 5 slides through the inner side of the sliding holes 4. A suction cup body 6 is fixedly connected to the bottom of the connecting rod 5. Suction holes 7 are opened at both ends of the bottom of the suction cup body 6. A silicone sleeve 8 is fixedly installed on the outer periphery of the bottom of the suction hole 7. A spring 9 is sleeved and connected to the surface of the connecting rod 5. The top end of the spring 9 is fixedly connected to the bottom of the fixed plate 3. The bottom end of the spring 9 is fixedly connected to the bottom end surface of the connecting rod 5. A limit block 10 is fixedly installed at the top end of the connecting rod 5. A limit rod 11 is fixedly installed in the middle of the top end of the limit block 10. A clamping cylinder 12 is fixedly installed in the middle of the bottom side of the connecting plate 1. Two sets of clamping plates 13 are connected to the bottom output end of the clamping cylinder 12. A vacuum generator 14 is fixedly installed at the bottom of the fixed plate 3. The vacuum generator 14 is connected to the two sets of suction cup bodies 6 through a connecting pipe 15.

[0020] In this embodiment, during specific use, the top of the connecting plate 1 is first connected to the driving mechanism to facilitate flexible movement. Through the two sets of symmetrically arranged connecting rods 5 and the suction cup body 6, when the suction cup body 6 adsorbs and fixes objects that are irregular or have height differences on the surface, after the bottom of the suction cup body 6 is in contact with the surface of the object, the plane of the height difference on the surface of the object will drive the corresponding suction cup body 6 to move upward inside the sliding hole 4, so that the bottom suction cup body 6 and the surface of the object are always in close contact. The operation of the vacuum generator 14 can generate negative pressure below the suction hole 7, thereby firmly adsorbing the object. The silicone sleeve 8 is set to avoid scratches and damage to the surface of the object. The upward moving connecting rod 5 will drive the top limiting rod 11 to enter the inner side of the two sets of clamping plates 13. The operation of the clamping cylinder 12 can drive the clamping plate 13 to clamp and fix the limiting rod 11, further improving the adaptive adjustment adsorption effect of the device for different objects.

[0021] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum chuck for CNC machining, comprising a connecting plate (1), characterized in that: The bottom of the connecting plate (1) is provided with a vertical rod (2), the bottom end of the vertical rod (2) is provided with a fixing plate (3), the surface of the fixing plate (3) is provided with a sliding hole (4), the inner side of the sliding hole (4) is provided with a connecting rod (5), the bottom of the connecting rod (5) is provided with a suction cup body (6), the bottom of the suction cup body (6) is provided with a suction hole (7), the bottom of the suction hole (7) is provided with a silicone sleeve (8), the surface of the connecting rod (5) is provided with a spring (9), the top of the connecting rod (5) is provided with a limiting block (10), the top of the limiting block (10) is provided with a limiting rod (11), the bottom of the connecting plate (1) is provided with a clamping cylinder (12), the bottom of the clamping cylinder (12) is provided with a clamping plate (13), the bottom of the fixing plate (3) is provided with a vacuum generator (14), the bottom of the vacuum generator (14) is provided with a connecting pipe (15), and the end of the connecting pipe (15) is provided with a valve (16).

2. The vacuum chuck for CNC machining according to claim 1, characterized in that: The connecting plate (1) and the fixing plate (3) are fixedly connected by four sets of uprights (2). Two sets of sliding holes (4) are opened through the surface of the fixing plate (3), and a connecting rod (5) slides through the inner side of the sliding hole (4).

3. The vacuum chuck for CNC machining according to claim 1, characterized in that: The bottom of the connecting rod (5) is fixedly connected to a suction cup body (6), and suction holes (7) are provided at both ends of the bottom of the suction cup body (6). A silicone sleeve (8) is fixedly installed around the bottom of the suction hole (7).

4. The vacuum chuck for CNC machining according to claim 1, characterized in that: A spring (9) is sleeved on the surface of the connecting rod (5). The top end of the spring (9) is fixedly connected to the bottom of the fixing plate (3). The bottom end of the spring (9) is fixedly connected to the bottom end surface of the connecting rod (5). A limit block (10) is fixedly installed on the top end of the connecting rod (5). A limit rod (11) is fixedly installed in the middle of the top end of the limit block (10).

5. The vacuum chuck for CNC machining according to claim 1, characterized in that: A clamping cylinder (12) is fixedly installed in the middle of the bottom side of the connecting plate (1), and two sets of clamping plates (13) are connected to the bottom output end of the clamping cylinder (12).

6. The vacuum chuck for CNC machining according to claim 1, characterized in that: A vacuum generator (14) is fixedly installed at the bottom of the fixed plate (3), and the vacuum generator (14) is connected to the two sets of suction cup bodies (6) through a connecting pipe (15).

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