Pneumatic interchangeable machining fixture

Abstract

The utility model relates to the field of clamping frock discloses a pneumatic interchanging processing clamp, including bottom plate, the upper surface of bottom plate installs support column, the upper surface of support column installs support station, the upper surface of support station is provided with the article groove, the upper surface fixedly connected with stand of support column is provided with fixed groove, the inner wall of article groove is provided with air hole, the lower surface of support station installs the shunt plate, the upper surface of bottom plate is provided with fixed component, fixed component and shunt plate are connected with each other through gas pipeline, the fixed groove sets up two groups. In the utility model, when the air inside gas pipeline is drawn outwards, the piston block will be forced to move down, and at the same time, it will drive the extrusion head to move down and extrude the support station, so that the support station can be fixed on the surface of the support column.

Description

Technical Field

[0001] This utility model relates to the field of tooling fixtures, and in particular to a pneumatic interchangeable machining fixture. Background Technology

[0002] A tooling fixture is a device used to fix a workpiece. During machining, in order to prevent the workpiece from moving at will during the machining process, tooling fixtures are needed to fix it. Common tooling fixtures in the existing technology mainly include mechanical fixtures and pneumatic fixtures. Among them, pneumatic fixtures mainly rely on negative pressure to clamp the workpiece. Because the clamping process is relatively fast, they are widely used.

[0003] Pneumatic clamps can provide strong vertical suction, allowing the workpiece to adhere to the support table. However, they cannot restrict the horizontal movement of the workpiece. Therefore, it is necessary to create slots on the surface of the support table that match the outer wall of the workpiece. By placing the workpiece into the slots, the horizontal movement of the workpiece can be restricted. However, different sizes of workpieces require support tables with slots of different shapes for fixing during processing. This necessitates frequent replacement of the support tables. In the existing technology, bolts are often used to fix the support tables, which is inconvenient when replacing them. Therefore, a pneumatic interchangeable machining clamp is proposed to solve the above problems. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides a pneumatic interchangeable machining fixture, which aims to improve the problem in the prior art that "the support table needs to be replaced according to different workpieces during use, and the prior art often uses bolts to fix the support table, which is inconvenient when replacing it".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pneumatic interchangeable machining fixture, comprising a base plate, a support column mounted on the upper surface of the base plate, a support platform mounted on the upper surface of the support column, a storage groove provided on the upper surface of the support platform, a column fixedly connected to the upper surface of the support column, a fixing groove provided on the upper surface of the support platform, air holes provided on the inner wall of the storage groove, a flow divider plate mounted on the lower surface of the support platform, a fixing component provided on the upper surface of the base plate, and the fixing component and the flow divider plate being interconnected through an air supply pipe.

[0006] As a further description of the above technical solution: The fixing groove is provided in two sets, and the two sets of fixing grooves are respectively located on the upper surface of the support platform near the left and right ends.

[0007] As a further description of the above technical solution: One set of the fixing grooves is configured as round holes, and the other set of the fixing grooves is configured as oblong holes.

[0008] As a further description of the above technical solution: The air vents are provided in multiple sets, and the multiple sets of air vents are arranged in a rotating array with the center line of the storage groove as the rotation axis.

[0009] As a further description of the above technical solution: The diversion plate is configured as a hollow circular sleeve with an opening at the top, and the center line of the diversion plate is collinear with the center line of the storage groove.

[0010] As a further description of the above technical solution: The fixing assembly includes a piston sleeve, which is fixedly connected to the upper surface of the base plate. A piston block is piston-connected to the inner wall of the piston sleeve. A slide rod is rotatably connected to the upper end of the piston block. An extrusion head is fixedly connected to the outer wall of the slide rod.

[0011] As a further description of the above technical solution: The inner wall of the piston sleeve is provided with a vertical groove, and the outer wall of the slide rod is provided with a protrusion, which slides on the inner wall of the vertical groove.

[0012] As a further description of the above technical solution: An arc-shaped groove is provided on the inner wall of the piston sleeve near the upper part of the vertical groove.

[0013] This utility model has the following beneficial effects: 1. In this utility model, by using the same set of gas supply pipes to simultaneously connect the fixing component and the diverter plate, when the air inside the gas supply pipe is drawn outward, the piston block will be forced to move downward, and at the same time, it will drive the extrusion head to move downward to extrude the support platform. In this way, the support platform can be fixed on the surface of the support column, and the workpiece will also be adsorbed in the storage groove by negative pressure. When the gas supply pipe is input with airflow, the extrusion head will move upward and no longer extrude the support platform. Then the support platform can be removed and replaced. The support platform is relatively convenient to replace.

[0014] 2. In this utility model, by setting an arc groove, when the slide bar moves upward, the protrusion on its outer wall will slide in the arc groove. In this way, the arc groove will guide the protrusion to rotate, and the rotation of the protrusion will drive the extrusion head to rotate, so that the extrusion head moves away from the top of the support table. This can prevent the extrusion head from blocking the support table and make it easier for the operator to remove the support table. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model; Figure 2 This is a three-dimensional structural breakdown diagram of the overall device in this utility model; Figure 3This is a three-dimensional cross-sectional diagram of the fixing component in this utility model. Figure 4 This is a three-dimensional structural breakdown diagram of the support platform in this utility model.

[0016] Legend: 1. Base plate; 2. Support column; 21. Column; 3. Support platform; 31. Fixing groove; 32. Storage groove; 33. Air hole; 4. Diverter plate; 5. Fixing component; 51. Piston sleeve; 52. Slide rod; 53. Extrusion head; 54. Arc groove; 55. Vertical groove; 56. Protrusion; 57. Piston block; 6. Gas transmission pipeline. 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] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a pneumatic interchangeable machining fixture, comprising a base plate 1 for supporting an overall device, a support column 2 for supporting a support platform 3 mounted on the upper surface of the base plate 1, a support platform 3 for supporting a workpiece mounted on the upper surface of the support column 2, a storage groove 32 for accommodating the workpiece on the upper surface of the support platform 3, the inner wall of the storage groove 32 being adapted to the outer wall of the workpiece, and a column 21 for fixing the support platform 3 fixedly connected to the upper surface of the support column 2, the upper surface of the support platform 3 being provided with a space for accommodating the column. The inner wall of the fixed groove 31 and the storage groove 32 is provided with air holes 33 for airflow. The lower surface of the support platform 3 is equipped with a flow divider 4 for guiding airflow. The upper surface of the base plate 1 is provided with a fixed component 5 for squeezing the support platform 3. The fixed component 5 and the flow divider 4 are connected to each other through the air supply pipe 6. When the gas inside the air supply pipe 6 is extracted, a negative pressure is generated inside it. In this way, the negative pressure can be transmitted to the workpiece through the flow divider 4 and the air holes 33, so that the workpiece can be adsorbed inside the storage groove 32.

[0019] Reference Figures 2-4Two sets of fixing grooves 31 are provided, and the two sets of fixing grooves 31 are respectively located on the upper surface of the support platform 3 near the left and right ends. By fixing the two sets of fixing grooves 31, the two ends of the support platform 3 can be fixed. One set of fixing grooves 31 is a round hole, which can be directly adapted to the column 21. The other set of fixing grooves 31 is an oblong hole. The overall length of the support platform 3 will be different for different sizes. By setting one set of fixing grooves 31 as an oblong hole, it is easy to align it with the column 21. Multiple sets of air holes 33 are provided. The multiple sets of air holes 33 are arranged in a rotating array with the center line of the placement groove 32 as the rotation axis. Setting multiple sets of air holes 33 can facilitate the uniform attraction of workpieces. The diverter plate 4 is a hollow round sleeve with an open top. The center line of the diverter plate 4 is collinear with the center line of the placement groove 32. With this setting, when processing the workpiece, the debris generated during the processing can be discharged through the center position of the diverter plate 4.

[0020] Reference Figures 2-4 The fixing assembly 5 includes a piston sleeve 51 for supporting the movement of the piston block 57. The piston sleeve 51 is fixedly connected to the upper surface of the base plate 1. The piston block 57 is piston-connected to the inner wall of the piston sleeve 51. When the piston sleeve 51 is inflated, the piston block 57 is forced to move upward. The upper end of the piston block 57 is rotatably connected to a slide rod 52 for supporting the extrusion head 53. The outer wall of the slide rod 52 is fixedly connected to the extrusion head 53 for extruding the support platform 3. When the piston block 57 moves downward, it will drive the slide rod 52 downward synchronously. The piston sleeve 51 has a vertical groove 55 on its inner wall and a protrusion 56 on its outer wall. The protrusion 56 slides on the inner wall of the vertical groove 55. When the protrusion 56 moves upward, it will first move vertically upward under the guidance of the vertical groove 55. The piston sleeve 51 has an arc groove 54 above the vertical groove 55 on its inner wall. As the protrusion 56 continues to move upward, it will rotate under the guidance of the arc groove 54, thus driving the extrusion head 53 to rotate.

[0021] Working principle: When air is drawn through the air supply pipe 6, negative pressure is generated by the air holes 33 on the inner wall of the diverter plate 4 and the storage groove 32, which adsorbs and fixes the workpiece in the storage groove 32. At the same time, the piston block 57 in the piston sleeve 51 moves down due to the negative pressure, which drives the slide rod 52 and the extrusion head 53 to press down, so that the support platform 3 is fixed with the column 21 of the support column 2 through the fixing groove 31. When the support platform 3 needs to be replaced, air is injected into the air supply pipe 6, the piston block 57 moves up, and the protrusion 56 on the outer wall of the slide rod 52 slides along the vertical groove 55 and the arc groove 54 on the inner wall of the piston sleeve 51, which drives the extrusion head 53 to rotate and lift, releasing the support platform 3. The design of the round hole and the waist-shaped hole in the fixing groove 31 is used to adapt to the support platform 3 of different sizes, so as to achieve quick replacement. After the workpiece is placed in the storage groove 32, it is horizontally positioned by the groove wall. The whole process realizes workpiece adsorption, support platform 3 fixation and quick replacement through pneumatic negative pressure and mechanical linkage.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic interchangeable machining fixture, comprising a base plate (1), characterized in that: The upper surface of the base plate (1) is equipped with a support column (2), the upper surface of the support column (2) is equipped with a support platform (3), the upper surface of the support platform (3) is provided with a storage groove (32), the upper surface of the support column (2) is fixedly connected with a column (21), the upper surface of the support platform (3) is provided with a fixing groove (31), the inner wall of the storage groove (32) is provided with an air hole (33), the lower surface of the support platform (3) is equipped with a diversion plate (4), the upper surface of the base plate (1) is provided with a fixing component (5), and the fixing component (5) and the diversion plate (4) are connected to each other through an air supply pipe (6).

2. The pneumatic interchangeable machining fixture according to claim 1, characterized in that: The fixing groove (31) is provided in two sets, and the two sets of fixing grooves (31) are respectively located on the upper surface of the support platform (3) near the left and right ends.

3. A pneumatic interchangeable machining fixture according to claim 2, characterized in that: One set of the fixing grooves (31) is configured as round holes, and the other set of the fixing grooves (31) is configured as waist-shaped holes.

4. A pneumatic interchangeable machining fixture according to claim 1, characterized in that: The air holes (33) are provided in multiple sets, and the multiple sets of air holes (33) are arranged in a rotating array with the center line of the storage groove (32) as the rotation axis.

5. A pneumatic interchangeable machining fixture according to claim 1, characterized in that: The diversion plate (4) is configured as a hollow circular sleeve with an opening at the top, and the center line of the diversion plate (4) is collinear with the center line of the storage groove (32).

6. A pneumatic interchangeable machining fixture according to claim 1, characterized in that: The fixing component (5) includes a piston sleeve (51), which is fixedly connected to the upper surface of the base plate (1). The inner wall of the piston sleeve (51) is connected to a piston block (57), and the upper end of the piston block (57) is rotatably connected to a slide rod (52). The outer wall of the slide rod (52) is fixedly connected to an extrusion head (53).

7. A pneumatic interchangeable machining fixture according to claim 6, characterized in that: The piston sleeve (51) has a vertical groove (55) on its inner wall, and the slide rod (52) has a protrusion (56) on its outer wall. The protrusion (56) slides on the inner wall of the vertical groove (55).

8. A pneumatic interchangeable machining fixture according to claim 7, characterized in that: An arc-shaped groove (54) is provided on the inner wall of the piston sleeve (51) above the vertical groove (55).

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