Pneumatic clamping tool for grinding outer circle of rotary target

Abstract

The invention relates to the technical field of target material machining clamp equipment, in particular to a pneumatic clamping tool for grinding an outer circle of a rotary target, which comprises a clamp pipe, ejector blocks fixedly connected to two ends of the clamp pipe and taper holes formed in the ejector blocks, and is characterized in that a plurality of mounting holes are formed in the surface of the clamp pipe, and external expansion key strips are mounted in the mounting holes; the interior of the clamp pipe is of a hollow structure, an external expansion mechanism used for inflating the external expansion key strip is arranged in the clamp pipe, the two ends of the clamp pipe are movably sleeved with limiting mechanisms, and the limiting mechanisms are used for limiting the two ends of the target material and used for driving the external expansion mechanism to inflate. The outer expansion key strip supports the target material on the outer side in an attached mode, the limiting mechanism is arranged to limit the two ends of the target material, the accuracy of the position of the target material on the clamp pipe is guaranteed, the stability of the position of the target material in the machining process is also guaranteed, and position deviation in the machining process is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of target processing fixture equipment, and particularly relates to a clamping pneumatic tooling for grinding the outer circle of a rotating target. Background Art

[0002] At present, after the rotating target workpiece is sintered and formed, it needs to be ground to meet the requirements of customers for dimensional accuracy and surface roughness. However, after the rotating target workpiece is sintered and formed, it will deform due to a large amount of heat generated, resulting in difficult clamping during the grinding process.

[0003] Publication No. CN214771495U discloses a special fixture applicable to the trimming of a rotating target. By providing an inflation tube on the surface of the metal core rod, when in use, the target is sleeved on the metal core rod, and then the inflation tube is inflated to expand and tightly adhere to the inner wall of the target, facilitating the subsequent processing of the target.

[0004] However, the prior art only supports the inner wall of the target by inflating and expanding through an internally arranged inflation tube, but lacks a limiting mechanism for the ends of the target at the end. When the target is fixed, the accuracy of the placement position cannot be guaranteed. During the processing, under the action of external forces, the target may still be pushed to generate displacement, resulting in deviation of the processing position and thus affecting the processing quality. Summary of the Invention

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

[0006] Based on the above purpose, the present invention provides a clamping pneumatic tooling for grinding the outer circle of a rotating target, including a fixture tube. The two ends of the fixture tube are fixedly connected with top blocks, and tapered holes are opened on the top blocks. A plurality of mounting holes are opened on the surface of the fixture tube, and outer expansion key strips are installed in the mounting holes. The interior of the fixture tube is a hollow structure, and an outer expansion mechanism for inflating the outer expansion key strips is arranged inside the fixture tube. Both ends of the fixture tube are movably sleeved with limiting mechanisms, and the limiting mechanisms are used for limiting both ends of the target and for driving the outer expansion mechanism to inflate.

[0007] Further improvement lies in that the outer expansion mechanism includes an outer expansion airbag installed inside the fixture tube. The outer expansion airbag is communicated with the outer expansion key strips through an air tube. Two extrusion plates are slidably connected to both ends inside the fixture tube, and the two side extrusion plates are respectively correspondingly connected to both ends of the outer expansion airbag.

[0008] Further improvement lies in that an air inlet and outlet is opened at one end of the fixture tube. The air inlet and outlet is communicated with the outer expansion airbag through an air tube, and a switch valve is installed on the air inlet and outlet.

[0009] A further improvement lies in that the limiting mechanism includes a moving plate. Sliding grooves are provided at both ends of the fixture tube, and the moving plate is slidably connected to the fixture tube through the sliding grooves. The inner side of the moving plate penetrates through the sliding grooves and is connected to the extrusion plate.

[0010] A further improvement lies in that an installation block is annularly and slidably connected to the outer side of the moving plate. A threaded hole is provided on the installation block, and a limiting rod is threadedly connected in the threaded hole.

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

[0012] A further improvement lies in that gaskets are installed around the side of the moving plate.

[0013] A further improvement lies in that calibration center blocks are detachably sleeved on the top blocks at both ends of the fixture tube.

[0014] A further improvement lies in that scale lines are provided on the surface of the fixture tube.

[0015] The beneficial effects of the present invention: By setting the outer expansion mechanism to inflate and expand the outer expansion key strips, the outer expansion key strips are attached to and supported the target material on the outside, ensuring the stability of the support for the target material; when in use, the outer expansion airbag is squeezed by the extrusion plate, so that the air in the outer expansion airbag enters the outer expansion key strips, causing the outer expansion key strips to expand rapidly, reducing the process of inflating with an air gun or air pipe each time, and greatly improving the convenience of use; the internal air pressure of the outer expansion airbag is adjusted through the air inlet and outlet, which is convenient for adjustment according to requirements and is suitable for the expansion clamping of target materials of different sizes.

[0016] The limiting mechanism is set to limit both ends of the target material, ensuring the accuracy of the position of the target material on the fixture tube and also ensuring the stability of the position of the target material during the processing, preventing the position from shifting during the processing; by rotating the nut on the threaded section to drive the moving plate to move along the direction of the fixture tube, the moving plate gradually moves towards the end of the target material, the limiting rod rotates on the installation block and extends out of the moving plate, and 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 clamping of the target material.

[0017] Calibration center blocks are sleeved at both ends of the target material, ensuring that the fixture tube can be placed horizontally or vertically stably, facilitating the stable sleeving of the target material onto the fixture tube and fixing it. The sleeving position of the target material is calibrated by the calibration center blocks to find the center position, facilitating the subsequent fixing of the position and improving the convenience of operation. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the attached drawings required for the description of the embodiments or the prior art. Obviously, the attached drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram for use in an embodiment of the present invention; Figure 2 Structural schematic diagram of the fixture tube in an embodiment of the present invention; Figure 3 Cross-sectional structural schematic diagram of the limit mechanism in an embodiment of the present invention; Figure 4 Structural schematic diagram of the moving plate in an embodiment of the present invention.

[0020] The labels in the figure are: 1. Fixture tube; 2. Top block; 3. Mounting hole; 4. Outer expansion key strip; 5. Outer expansion airbag; 6. Extrusion plate; 7. Air inlet and outlet; 8. Moving plate; 9. Slide groove; 10. Mounting block; 11. Limit rod; 12. Threaded section; 13. Nut; 14. Washer; 15. Alignment center block. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the present invention in combination with specific embodiments.

[0022] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "up", "down", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] As Figures 1-4 shown, a clamping pneumatic tooling for external grinding of a rotary target includes a fixture tube 1. The two ends of the fixture tube 1 are fixedly connected with top blocks 2. Taper holes are provided on the top blocks 2. The target material is sleeved on the fixture tube 1. The fixture tube 1 is placed on an external grinder, and the top pins on both sides are inserted into the taper holes to hold the tooling, and then grinding processing can be carried out.

[0024] As shown in Figure 2 , 3 etc., a plurality of mounting holes 3 are formed on the surface of the fixture tube 1, an outer expansion key strip 4 is installed in the mounting hole 3, the inside of the fixture tube 1 is a hollow structure, and an outer expansion mechanism for inflating the outer expansion key strip 4 is arranged inside the fixture tube 1. The outer expansion mechanism includes an outer expansion airbag 5, the outer expansion airbag 5 is installed inside the fixture tube 1, the outer expansion airbag 5 is communicated with the outer expansion key strip 4 through a trachea, two ends of the fixture tube 1 are slidably connected with extrusion plates 6, and the extrusion plates 6 on both sides are respectively connected corresponding to both ends of the outer expansion airbag 5. The outer expansion airbag 5 in the middle is extruded by the movement of the extrusion plates 6 on both sides, and the communicated outer expansion key strip 4 is expanded by the extrusion of the outer expansion airbag 5, so as to fix the target material on the outside; an air inlet and outlet 7 is formed at one end of the fixture tube 1, the air inlet and outlet 7 is communicated with the outer expansion airbag 5 through a trachea, and a switch valve is installed on the air inlet and outlet 7. The air inlet and outlet 7 is opened and closed through the switch valve, and the outer expansion airbag 5 is inflated through the air inlet and outlet 7 to ensure that there is enough air pressure in the outer expansion airbag 5 to expand the outer expansion key strip 4, and it is adjusted according to the use requirements.

[0025] As shown in Figure 3 , 4 etc., limiting mechanisms are movably sleeved at both ends of the fixture tube 1. The limiting mechanisms are used for limiting both ends of the target material and for driving the outer expansion mechanism to inflate. The limiting mechanism includes a moving plate 8. Sliding grooves 9 are formed at both ends of the fixture tube 1, and the moving plate 8 is slidably connected to the fixture tube 1 through the sliding grooves 9. Threaded sections 12 are formed at both ends of the fixture tube 1, and a nut 13 is threadedly connected to the end of the fixture tube 1 through the threaded section 12. The nut 13 is rotatably connected to the moving plate 8. By rotating and displacing the nut 13 on the threaded section 12, the moving plate 8 is driven to slide along the sliding groove 9 towards the target material; gaskets 14 are installed around the side of the moving plate 8. When the moving plate 8 moves to the end of the target material, the gasket 14 is located between the target material and the moving plate 8 to elastically support the end of the target material; the inner side of the moving plate 8 penetrates through the sliding groove 9 and is connected to the extrusion plate 6. An installation block 10 is annularly and slidably connected to the outer side of the moving plate 8. A threaded hole is formed in the installation block 10, and a limiting rod 11 is threadedly connected in the threaded hole. A grinding piece is arranged at the end of the limiting rod 11, and the grinding piece at the end of the limiting rod 11 is attached to the end of the target material. When the target material rotates, the grinding piece slightly grinds the end of the target material. A limiting block is arranged on the external cylindrical grinder, and the limiting rod 11 is limited by the limiting block. When the grinder drives the fixture tube 1 and the target material to rotate, the position of the limiting rod 11 is relatively fixed and keeps a vertically downward state, so that the limiting rod 11 removes the burrs at the end of the target material while limiting the end of the target material, improving the grinding effect on the target material.

[0026] As shown in Figure 2As shown, the top blocks 2 at both ends of the fixture tube 1 are detachably provided with correction center blocks 15, which are used when the target material is assembled on the fixture tube 1. The correction center blocks 15 are used to stably place the fixture tube 1 to ensure the stability of the target material when it is fixed.

[0027] The surface of the fixture tube 1 is provided with scale lines, and the target material fixing position is determined by marking the scale lines to ensure the accuracy of the target material position.

[0028] When in use, the target material is inserted into the fixture tube 1, and the correction center block 15 is sleeved on the top blocks 2 at both ends, so that the fixture tube 1 is placed horizontally or vertically to ensure its stability; the limit rod 11 is rotated to make its end extend outward from the moving plate 8, and then the nut 13 is rotated to drive the moving plate 8 to move toward the end of the target material, so that the moving plate 8 is stuck to the end of the target material, and the limit rod 11 is attached to the side of the end of the target material, thereby limiting the two ends of the target material; during the movement of the moving plate 8, the limit rod 11 is driven to move to the end of the target material, so that the moving plate 8 is inserted into the end of the target material. The extrusion plate 6 moves, and the extrusion plates 6 on both sides move toward each other to squeeze the external expansion airbag 5 in the middle. The external expansion airbag 5 is squeezed to transport the internal gas to the external expansion key strip 4, so that the external expansion key strip 4 gradually expands. After the external expansion airbag 5 expands, it fits the inner wall of the target material, thereby fixing and supporting the target material. After the fixation is completed, the correction center block 15 is removed, and then the fixture tube 1 and the target material are placed on the external cylindrical grinder. The top pins on both sides support the tapered holes of the top blocks 2 at both ends of the fixture tube 1. After the installation is completed, a runout test is performed and processing is performed.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A clamping pneumatic tooling for grinding the outer circle of a rotary target, comprising a fixture tube (1), with top blocks (2) fixedly connected to both ends of the fixture tube (1), and tapered holes are provided on the top blocks (2), characterized in that, The surface of the fixture tube (1) is provided with a plurality of mounting holes (3), and an expansion key strip (4) is installed in the mounting hole (3). The interior of the fixture tube (1) is a hollow structure. An expansion mechanism for inflating the expansion key strip (4) is arranged inside the fixture tube (1). Both ends of the fixture tube (1) are movably sleeved with a limiting mechanism, and the limiting mechanism is used for limiting both ends of the target and for driving the expansion mechanism to inflate.

2. The clamping pneumatic tooling for external grinding of a rotary target according to claim 1, wherein The expansion mechanism includes an expansion airbag (5). The expansion airbag (5) is installed inside the fixture tube (1). The expansion airbag (5) is communicated with the expansion key strip (4) through a trachea. Two extrusion plates (6) are slidably connected to both ends inside the fixture tube (1), and the two extrusion plates (6) on both sides are respectively connected corresponding to both ends of the expansion airbag (5).

3. The clamping pneumatic tooling for external grinding of a rotary target according to claim 2, characterized in that, An air inlet and outlet (7) is opened at one end of the fixture tube (1). The air inlet and outlet (7) is communicated with the expansion airbag (5) through a trachea, and a switch valve is installed on the air inlet and outlet (7).

4. The clamping pneumatic tooling for rotary target grinding of the outer circle according to claim 3, characterized in that The limiting mechanism includes a moving plate (8). Sliding grooves (9) are opened at both ends of the fixture tube (1). The moving plate (8) is slidably connected to the fixture tube (1) through the sliding grooves (9). The inner side of the moving plate (8) penetrates through the sliding grooves (9) and is connected to the extrusion plate (6).

5. The clamping pneumatic tooling for rotary target grinding of the outer circle according to claim 4, characterized in that, An installation block (10) is annularly slidably connected to the outer side of the moving plate (8). A threaded hole is opened in the installation block (10), and a limiting rod (11) is threadedly connected in the threaded hole.

6. The clamping pneumatic tooling for external grinding of a rotary target according to claim 4, characterized in that, Threaded sections (12) are opened at both ends of the fixture tube (1). The end of the fixture tube (1) is threadedly connected with a nut (13) through the threaded section (12), and the nut (13) is rotatably connected to the moving plate (8).

7. The clamping pneumatic tooling for external grinding of a rotary target according to claim 4, characterized in that, A washer (14) is installed around the side of the moving plate (8).

8. The clamping pneumatic tooling for external cylindrical grinding of a rotary target according to claim 1, characterized in that, Calibration center blocks (15) are detachably sleeved on the top blocks (2) at both ends of the fixture tube (1).

9. The clamping pneumatic tooling for external grinding of a rotary target according to claim 1, characterized in that Scale lines are provided on the surface of the fixture tube (1).

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