A clamping pneumatic tool for grinding the outer circle of a rotating target

Abstract

This invention relates to the field of target material processing fixtures, specifically to a pneumatic fixture for clamping the outer diameter of a rotating target mill. The fixture includes a fixture tube with top blocks fixedly connected to both ends. Each top block has a conical hole. The fixture tube has multiple mounting holes on its surface, into which an external expansion key is installed. The fixture tube has a hollow interior and contains an external expansion mechanism for inflating the external expansion key. Limiting mechanisms are movably fitted at both ends of the fixture tube. These limiting mechanisms limit the target material at both ends and drive the external expansion mechanism to inflate. By inflating the external expansion key, the external expansion key fits and supports the target material on the outside. The limiting mechanisms limit the target material at both ends, ensuring the accuracy of the target material's position on the fixture tube and the stability of its position during processing, preventing positional deviation during processing.

Description

Technical Field

[0001] This invention relates to the field of target material processing fixtures and equipment, and in particular to a pneumatic tooling for clamping the outer diameter of a rotating target mill. Background Technology

[0002] Currently, after the rotating target workpiece is sintered, it needs to be ground to meet the customer's requirements for dimensional accuracy and surface roughness. However, the rotating target workpiece will deform due to the large amount of heat generated after sintering, which will cause clamping difficulties during the grinding process.

[0003] Announcement No. CN214771495U discloses a special fixture for trimming rotating target materials. By providing an air inflator on the surface of a metal core rod, the target material is placed on the metal core rod during use, and then the air inflator is inflated to fit tightly against the inner wall of the target material, which facilitates subsequent processing of the target material.

[0004] However, existing technology only supports the inner wall of the target material by inflating it through an internal inflation tube. However, it lacks a limiting mechanism at the end of the target material. The accuracy of the target material's placement cannot be guaranteed. During processing, external forces may still push the target material to move, causing deviations in the processing position and thus affecting the processing quality. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a pneumatic tooling for clamping the outer circle of a rotating target grinding wheel, so as to solve the problem that the lack of a limiting mechanism at the upper end of the fixture cannot guarantee the accuracy of the target's position on the fixture.

[0006] To achieve the above objectives, the present invention provides a pneumatic fixture for clamping the outer diameter of a rotating target grinding wheel, comprising a clamping tube, top blocks fixedly connected to both ends of the clamping tube, a tapered hole on the top block, multiple mounting holes on the surface of the clamping tube, an external expansion key strip installed in the mounting holes, the interior of the clamping tube being a hollow structure, an external expansion mechanism for inflating the external expansion key strip being provided inside the clamping tube, and a limiting mechanism movably fitted at both ends of the clamping tube, the limiting mechanism being used to limit the ends of the target material and to drive the external expansion mechanism to inflate.

[0007] A further improvement is that the external expansion mechanism includes an external expansion airbag, which is installed inside the clamp tube. The external expansion airbag is connected to the external expansion key strip through an air pipe. Squeezing plates are slidably connected to both ends of the clamp tube, and the squeezing plates on both sides are respectively connected to the two ends of the external expansion airbag.

[0008] A further improvement is that an air inlet and outlet are provided at one end of the clamp tube. The air inlet and outlet are connected to the external inflation bladder through an air pipe, and a switch valve is installed on the air inlet and outlet.

[0009] A further improvement is that the limiting mechanism includes a movable plate, and the clamp tube has grooves at both ends. The movable plate is slidably connected to the clamp tube through the grooves, and the inner side of the movable plate is connected to the extrusion plate through the grooves.

[0010] A further improvement is that a mounting block is slidably connected to the outer side of the movable plate, and a threaded hole is provided on the mounting block, with a limit rod threadedly connected inside the threaded hole.

[0011] A further improvement is that threaded sections are provided at both ends of the clamp tube, and nuts are threadedly connected to the ends of the clamp tube through the threaded sections. The nuts and the moving plate are rotatably connected.

[0012] A further improvement is that washers are installed around the sides of the movable plate.

[0013] A further improvement is that a correction center block is detachably fitted onto the top blocks at both ends of the clamp tube.

[0014] A further improvement is that the surface of the clamp tube is provided with graduation lines.

[0015] The beneficial effects of this invention are as follows: By setting an external expansion mechanism to inflate the external expansion key strip, the external expansion key strip fits and supports the target material on the outside, ensuring stable support for the target material; during use, the external expansion airbag is squeezed by the extrusion plate, allowing the air inside the external expansion airbag to enter the external expansion key strip, causing the external expansion key strip to expand rapidly, reducing the need for air guns or air hoses to inflate it each time, greatly improving the convenience of use; the internal air pressure of the external expansion airbag can be adjusted through the air inlet and outlet ports, making it easy to adjust according to needs and suitable for the expansion and clamping of target materials of different sizes.

[0016] A limiting mechanism is set to limit both ends of the target material, ensuring the accuracy of the target material's position on the fixture tube and the stability of its position during processing, preventing positional deviation. By rotating the nut on the threaded section, the moving plate is driven to move along the direction of the fixture tube, gradually moving the moving plate towards the end of the target material. The limiting rod rotates on the mounting block and extends out of the moving plate. When the moving plate approaches the target material, the limiting rod fits against the end of the target material, thereby limiting the target material and ensuring the stability of the target material clamping.

[0017] The target is fitted with center blocks at both ends to ensure that the clamp tube can be placed stably horizontally or vertically. This makes it easy to stably fit the target onto the clamp tube and fix it in place. The center blocks are used to correct the position of the target and determine the center position, which facilitates subsequent fixation and improves the convenience of operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure used in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the clamp tube structure according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the limiting mechanism according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the movable plate structure according to an embodiment of the present invention.

[0023] The diagram is marked as follows:

[0024] 1. Clamp tube; 2. Top block; 3. Mounting hole; 4. External expansion key strip; 5. External expansion airbag; 6. Extrusion plate; 7. Air inlet and outlet; 8. Moving plate; 9. Slide groove; 10. Mounting block; 11. Limiting rod; 12. Threaded section; 13. Nut; 14. Washer; 15. Alignment center block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] like Figure 1-4As shown, a pneumatic fixture for clamping a rotating target grinding outer circle includes a fixture tube 1, with top blocks 2 fixedly connected to both ends of the fixture tube 1. The top blocks 2 have conical holes. The target material is sleeved on the fixture tube 1. The fixture tube 1 is placed on an external cylindrical grinding machine. The top pins on both sides are inserted into the conical holes to hold the fixture in place for grinding.

[0028] like Figure 2 , 3 As shown, the clamp tube 1 has multiple mounting holes 3 on its surface, and an external expansion key 4 is installed in each mounting hole 3. The clamp tube 1 has a hollow internal structure and is equipped with an external expansion mechanism for inflating the external expansion key 4. The external expansion mechanism includes an external expansion airbag 5, which is installed inside the clamp tube 1 and is connected to the external expansion key 4 through an air pipe. Squeezing plates 6 are slidably connected to both ends of the clamp tube 1, and the squeezing plates 6 on both sides are respectively connected to the two ends of the external expansion airbag 5. The moving part compresses the middle outer air bladder 5, which in turn causes the connected outer expansion key 4 to expand, thereby fixing the outer target material. One end of the clamp tube 1 is provided with an air inlet / outlet 7, which is connected to the outer air bladder 5 through an air pipe. A switch valve is installed on the air inlet / outlet 7. By opening and closing the air inlet / outlet 7, air is inflated into the outer air bladder 5 through the air inlet / outlet 7 to ensure that there is sufficient air pressure in the outer air bladder 5 to expand the outer expansion key 4. The pressure can be adjusted according to the usage requirements.

[0029] like Figure 3 , 4As shown, both ends of the clamp tube 1 are movably fitted with limiting mechanisms. These limiting mechanisms limit the ends of the target material and drive the external expansion mechanism to inflate. Each limiting mechanism includes a movable plate 8. Slide grooves 9 are provided at both ends of the clamp tube 1. The movable plate 8 is slidably connected to the clamp tube 1 via the slide grooves 9. Threaded sections 12 are provided at both ends of the clamp tube 1. Nuts 13 are threadedly connected to the ends of the clamp tube 1 via the threaded sections 12. Nuts 13 and movable plate 8 are rotatably connected. The nut 13 rotates and moves on the threaded sections 12, causing the movable plate 8 to slide along the slide grooves 9 towards the target material. Washers 14 are installed around the side of the movable plate 8. When the movable plate 8 moves to the end of the target material, the washers 14 are located between the target material and the movable plate 8, providing support to the end of the target material. The part is elastically supported; the inner side of the moving plate 8 is connected to the extrusion plate 6 through the sliding groove 9, and the outer side of the moving plate 8 is circumferentially slidably connected to the mounting block 10. The mounting block 10 is provided with a threaded hole, and the threaded hole is connected to the limit rod 11. The end of the limit rod 11 is provided with a grinding disc. The grinding disc at the end of the limit rod 11 is attached to the end of the target material. When the target material rotates, the grinding disc performs slight grinding on the end of the target material. The external cylindrical grinding machine is provided with a limit block. The limit rod 11 is limited by the limit block. When the grinding machine drives the fixture tube 1 and the target material to rotate, the position of the limit rod 11 is relatively fixed and keeps in a vertical downward state. The limit rod 11 limits the end of the target material and removes the burrs on the end of the target material at the same time, which improves the grinding effect of the target material.

[0030] like Figure 2 As shown, a correction center block 15 is detachably fitted on the top block 2 at both ends of the clamp tube 1. The correction center block 15 is used when the target material is assembled onto the clamp tube 1. The clamp tube 1 is stably placed by the correction center block 15 to ensure the stability of the target material when it is fixed.

[0031] The surface of the clamp tube 1 is provided with scale lines. The fixed position of the target material is determined by the markings on the scale lines to ensure the accuracy of the target material position.

[0032] In use, the target is fitted onto the clamp tube 1, and the centering block 15 is fitted onto the top blocks 2 at both ends, so that the clamp tube 1 is placed horizontally or vertically to ensure its stability. The limiting rod 11 is rotated so that its end extends outward from the moving plate 8, and then the nut 13 is rotated to move the moving plate 8 towards the end of the target, so that the moving plate 8 is engaged with the end of the target, and the limiting rod 11 fits against the side of the end of the target, thus limiting the two ends of the target. During the movement of the moving plate 8, the target is driven... The extrusion plate 6 moves, and the extrusion plates 6 on both sides move towards each other to extrude the outer expansion bladder 5 in the middle. The outer expansion bladder 5 is compressed, causing the internal gas to be transported to the outer expansion key 4, which causes the outer expansion key 4 to gradually expand. After the outer expansion bladder 5 expands, it fits against the inner wall of the target material, thereby fixing and supporting the target material. After fixing, the correction center block 15 is removed, and then the fixture tube 1 and the target material are placed on the external cylindrical grinding machine. The top pins on both sides press against the tapered holes of the top blocks 2 at both ends of the fixture tube 1. After installation, a runout test is performed and the material is processed.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A pneumatic fixture for clamping the outer diameter of a rotating target mill, comprising a clamping tube (1), with top blocks (2) fixedly connected to both ends of the clamping tube (1), and the top blocks (2) having tapered holes, characterized in that, The fixture tube (1) has multiple mounting holes (3) on its surface. An external expansion key strip (4) is installed in the mounting holes (3). The fixture tube (1) has a hollow structure inside. An external expansion mechanism for inflating the external expansion key strip (4) is provided inside the fixture tube (1). Both ends of the fixture tube (1) are movably fitted with a limiting mechanism. The limiting mechanism is used to limit the ends of the target material and to drive the external expansion mechanism to inflate. The limiting mechanism includes a moving plate (8). The fixture tube (1) has a sliding groove (9) at both ends. The moving plate (8) is slidably connected to the fixture tube (1) through the sliding groove (9). The inner side of the moving plate (8) passes through the sliding groove (9) and is connected to the extrusion plate (6). An installation block (10) is slidably connected to the outer side of the moving plate (8). A threaded hole is provided on the installation block (10). A limiting rod (11) is threadedly connected inside the threaded hole. A grinding disc is provided at the end of the limiting rod (11).

2. The clamping pneumatic tool for grinding the outer circle of the rotary target according to claim 1, characterized in that, The external expansion mechanism includes an external expansion airbag (5), which is installed inside the clamp tube (1). The external expansion airbag (5) is connected to the external expansion key strip (4) through an air pipe. Squeezing plates (6) are slidably connected to both ends of the clamp tube (1), and the squeezing plates (6) on both sides are respectively connected to the two ends of the external expansion airbag (5).

3. The clamping pneumatic tool for grinding the outer circle of the rotary target according to claim 2, characterized in that, One end of the clamp tube (1) is provided with an air inlet / outlet (7), which is connected to the external inflation bladder (5) through an air pipe. A switch valve is installed on the air inlet / outlet (7).

4. The clamping pneumatic tool for grinding the outer circle of the rotary target according to claim 1, characterized in that, The clamp tube (1) has threaded sections (12) at both ends. The end of the clamp tube (1) is connected to a nut (13) through the threaded section (12). The nut (13) and the moving plate (8) are rotatably connected.

5. The clamping pneumatic tool for grinding the outer circle of the rotary target according to claim 4, characterized in that, Washers (14) are installed around the side of the movable plate (8).

6. The clamping pneumatic tool for grinding the outer circle of a rotary target according to claim 1, characterized in that, The top blocks (2) at both ends of the clamp tube (1) are detachably fitted with correction center blocks (15).

7. The clamping pneumatic tool for grinding the outer circle of the rotary target according to claim 1, characterized in that, The surface of the clamp tube (1) is provided with scale lines.

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