Internal and external integrated polishing grinding wheel for austenitic stainless steel seamless steel pipe

Abstract

The invention relates to the technical field of material surface finish machining grinding tools, in particular to an internal and external integrated polishing grinding wheel for an austenitic stainless steel seamless steel pipe. The grinding wheel comprises a connector, a screw rod, an inner mounting plate, an inner grinding block, connecting rings and a hinge rod, the screw rod is connected to the left end of the connector, a limiting sliding groove is formed in the screw rod, the connecting rings are slidably connected into the limiting sliding groove, the inner mounting plate is connected between the connecting rings through the hinge rod, and the inner grinding block is mounted on the inner mounting plate through a fixing assembly. The inner grinding block and the outer grinding block are integrally arranged on the screw rod through the connecting ring, the hinge rod, the first guide sliding frame and other parts, the connector is connected to the driving main shaft to drive the outer grinding block and the inner grinding block to rotate at a high speed, and then the inner wall and the outer wall of the seamless steel pipe can be ground and polished; and meanwhile, the grinding radiuses of the inner grinding block and the outer grinding block can be adjusted by adjusting a connecting ring and pushing a threaded sleeve, and then the device can adapt to austenitic stainless steel seamless steel pipes with different diameters.

Description

Technical Field

[0001] The present invention relates to the technical field of finishing abrasives for material surfaces, and particularly to an internal and external integrated polishing grinding wheel for austenitic stainless steel seamless steel pipes. Background Art

[0002] Austenitic stainless steel refers to stainless steel with austenitic structure at room temperature. When the steel contains about 18% Cr, 8% - 25% Ni, and about 0.1% C, it has a stable austenitic structure. Austenitic chromium-nickel stainless steels include the well-known 18Cr-8Ni steel and the high Cr-Ni series steels developed by increasing the Cr and Ni contents and adding elements such as Mo, Cu, Si, Nb, and Ti on this basis. Austenitic stainless steel is non-magnetic and has high toughness and plasticity, but its strength is relatively low. It is impossible to strengthen it through phase transformation, and it can only be strengthened by cold working. For example, by adding elements such as S, Ca, Se, and Te, it has good machinability.

[0003] Existing seamless steel pipe polishing grinding wheels are mainly disc-shaped polishing grinding wheels. By rotating the polishing grinding wheel at high speed and contacting the seamless steel pipe, the polishing of the seamless steel pipe is achieved. When polishing the inside of the seamless steel pipe, the size of the polishing grinding wheel needs to be smaller than the inner diameter of the seamless steel pipe, otherwise the polishing grinding wheel cannot enter the seamless steel pipe, and thus the inside of the seamless steel pipe cannot be polished. When polishing the outer wall of the seamless steel pipe, the polishing grinding wheel needs to rotate around the seamless steel pipe or the seamless steel pipe rotates itself to achieve the polishing of the outer wall of the seamless steel pipe, resulting in reduced polishing efficiency and accuracy. Moreover, the size of the existing polishing grinding wheel is fixed and it is difficult to adjust adaptively according to the diameter of the seamless steel pipe. Summary of the Invention

[0004] In order to overcome the disadvantages that the size of the existing polishing grinding wheel is fixed and it is difficult to adjust adaptively according to the diameter of the seamless steel pipe, and when polishing the outer wall of the seamless steel pipe, the polishing grinding wheel needs to rotate around the seamless steel pipe or the seamless steel pipe rotates itself to achieve the polishing of the outer wall of the seamless steel pipe, resulting in reduced polishing efficiency and accuracy, the present invention provides an internal and external integrated polishing grinding wheel for austenitic stainless steel seamless steel pipes.

[0005] The technical solution is as follows: An internal and external integrated polishing grinding wheel for austenitic stainless steel seamless steel pipes, comprising a connector, a screw rod, an inner mounting plate, inner grinding blocks, a connecting ring, a fixing component and a hinged rod. The left end of the connector is connected to a screw rod, the left end of the screw rod is connected to a sleeve, a limiting sliding groove is formed on the sleeve, a connecting ring is slidably connected in the limiting sliding groove, the connecting rings are connected to an inner mounting plate through a hinged rod, and inner grinding blocks are mounted on the inner mounting plate through a fixing component. It further includes a first guiding sliding frame, a sliding frame, a sliding block, a sliding rack, an outer mounting plate and outer grinding blocks. The sleeve is slidably sleeved with a first guiding sliding frame, the upper part of the first guiding sliding frame is slidably sleeved with a sliding frame, the upper part of the sliding frame is connected to a sliding block, the outer end of the first guiding sliding frame is provided with a sliding rack, a lifting groove is formed in the sliding rack, the sliding rack is slidably connected to the sliding block through the lifting groove, the sliding rack is connected to an outer mounting plate, and outer grinding blocks are mounted in the outer mounting plate through a fixing component.

[0006] Further, the fixing component includes a clamping rod and a spring. Clamping rods are slidably inserted into the side walls of the inner mounting plate and the outer mounting plate, and springs are connected between the inner mounting plate and the outer mounting plate and the corresponding clamping rods.

[0007] Further, the grinding wheel further includes a bidirectional lead screw and a limiting sliding sleeve. The left end of the sleeve is rotatably connected to a bidirectional lead screw, a limiting sliding sleeve is mounted at the left end of the bidirectional lead screw, and insertion holes are formed in the side walls of the limiting sliding sleeve and the bidirectional lead screw.

[0008] Further, the grinding wheel further includes a pulling plate and a hinged plate. The right connecting ring is connected to a pulling plate, and the pulling plate is rotatably connected to the sliding frame through a hinged plate.

[0009] Further, the grinding wheel further includes a lifting lead screw. The sliding rack is rotatably connected to a lifting lead screw, and the lifting lead screw is threadedly connected to the sliding block.

[0010] Further, the grinding wheel further includes a limiting plate, a pushing plate, a rack, a gear, a second guiding sliding frame and a threaded sleeve. A limiting plate is mounted on the sliding rack, a pushing plate is slidably inserted into the limiting plate, a rack is connected to the left end of the pushing plate, a gear meshing and driving with the rack is connected to the upper end of the lifting lead screw, a threaded sleeve is threadedly connected to the screw rod, the right end of the sleeve is slidably sleeved with a second guiding sliding frame, the right end of the pushing plate is slidably sleeved on the second guiding sliding frame, and the left end of the threaded sleeve is rotatably connected to the second guiding sliding frame through a bearing.

[0011] Further, the lower end of the lifting lead screw is rotatably connected to the sliding rack through a bearing.

[0012] Further, both the inner grinding blocks and the outer grinding blocks are provided with three groups and are symmetrically arranged around the sleeve.

[0013] Compared with the prior art, the present invention has the following advantages: The present invention integrally arranges the inner grinding block and the outer grinding block on the screw rod through components such as a connecting ring, a hinge rod, and a first guiding sliding frame, sleeved the seamless austenitic stainless steel pipe outside the inner grinding block, adjusted the inner grinding block and the outer grinding block so that they respectively abut against the corresponding inner wall and outer wall of the seamless steel pipe, and then connected the connector to the driving main shaft to make the screw rod rotate at a high speed, thereby driving the outer grinding block and the inner grinding block to rotate at a high speed, so as to polish the inner and outer walls of the seamless steel pipe. At the same time, by adjusting the relative distance of the connecting ring, the grinding radius of the inner grinding block can be adjusted, and by rotating the threaded sleeve, the grinding radius of the outer grinding block can be adjusted, so as to polish seamless austenitic stainless steel pipes with different diameters, thus improving the processing efficiency and polishing accuracy and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the clamping rod and the spring of the present invention; Figure 3 is a schematic diagram of the connection between the sliding frame and the pulling plate of the present invention; Figure 4 is a schematic diagram of the structure of the limiting sliding groove of the present invention; Figure 5 is a schematic diagram of the connection between the bidirectional lead screw, the limiting sliding sleeve and the insertion hole of the present invention; Figure 6 is a schematic diagram of the connection between the sliding frame, the pulling plate and the hinge plate of the present invention; Figure 7 is a schematic diagram of the structure of the sliding frame, the lifting lead screw and the slider of the present invention; Figure 8 is a sectional view of the connection between the lifting lead screw, the slider and the sliding frame of the present invention; Figure 9 is a schematic diagram of the structure of the threaded sleeve, the second guiding sliding frame and the pushing plate of the present invention.

[0015] Description of the reference numerals: 1 - connector, 2 - screw rod, 201 - limiting sliding groove, 202 - sleeve, 3 - inner mounting plate, 4 - inner grinding block, 5 - connecting ring, 6 - hinge rod, 7 - second guiding sliding frame, 8 - sliding frame, 801 - lifting groove, 9 - outer mounting plate, 10 - outer grinding block, 11 - bidirectional lead screw, 12 - limiting sliding sleeve, 13 - insertion hole, 14 - sliding frame, 15 - pulling plate, 16 - hinge plate, 17 - lifting lead screw, 171 - bearing, 18 - slider, 19 - clamping rod, 20 - spring, 21 - threaded sleeve, 22 - pushing plate, 23 - first guiding sliding frame, 24 - rack, 25 - gear, 26 - limiting plate. DETAILED DESCRIPTION OF THE INVENTION

[0016] It should first be pointed out that in the embodiments described differently, the same components are provided with the same reference numerals or the same component names. Among them, the disclosure contained throughout the specification can be transferred meaningfully to the same components with the same reference numerals or the same component names. The positional descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated drawings and are transferred meaningfully to the new positions when the positions change.

[0017] Example 1: An internal and external integrated polishing grinding wheel for austenitic stainless steel seamless steel pipes, as Figures 1-4 shown, includes a connector 1, a screw 2, an inner mounting plate 3, an inner grinding block 4, a connecting ring 5, a fixing component, and a hinge rod 6. The left end of the connector 1 is connected to the screw 2, the left end of the screw 2 is connected to a sleeve 202, the right end of the connector 1 is used to be connected to a driving main shaft, a limiting sliding groove 201 is opened on the sleeve 202, a connecting ring 5 is slidably connected in the limiting sliding groove 201, the connecting rings 5 are connected to an inner mounting plate 3 through a hinge rod 6, and inner grinding blocks 4 are mounted on the inner mounting plate 3 through a fixing component; First, the austenitic stainless steel seamless steel pipe is sleeved outside the inner grinding block 4, the left end of the seamless steel pipe is fixed with a fixture, and the left and right positions of the connecting ring 5 and the hinge rod 6 on the sleeve 202 are adjusted so that the inner grinding block 4 expands or contracts until it just closely adheres to the inner wall of the seamless steel pipe. The connector 1 is connected to an external driving main shaft so that the screw 2 rotates at a high speed, and then drives the inner grinding block 4 to rotate at a high speed to polish the inner wall of the seamless steel pipe.

[0018] As Figure 3 shown, the grinding wheel further includes a first guiding slide 23, a sliding frame 14, a slider 18, a sliding bracket 8, an outer mounting plate 9, and an outer grinding block 10. A first guiding slide 23 is slidably sleeved on the sleeve 202, a sliding frame 14 is slidably sleeved on the upper part of the first guiding slide 23, a slider 18 is connected to the upper part of the sliding frame 14, a sliding bracket 8 is arranged at the outer end of the first guiding slide 23, a lifting groove 801 is opened on the sliding bracket 8, the sliding bracket 8 is slidably connected to the slider 18 through the lifting groove 801, the sliding bracket 8 is connected to an outer mounting plate 9, and outer grinding blocks 10 are mounted in the outer mounting plate 9 through a fixing component; Both the inner grinding block 4 and the outer grinding block 10 are provided with three groups and are centrosymmetrically arranged around the sleeve 202; Push the sliding frame 14 along the first guiding slide 23 towards the outer end, and then the upper end of the sliding frame 14 pushes the sliding bracket 8, the outer mounting plate 9, and the outer grinding block 10 to move towards the outer end, so that the outer grinding block 10 can expand outwards to adapt to the outer wall size of the seamless steel pipe.

[0019] As Figure 2 and Figure 3As shown, the fixing component includes a clamping rod 19 and a spring 20. The clamping rod 19 is slidably inserted into the side walls of the inner mounting plate 3 and the outer mounting plate 9, and a spring 20 is connected between the inner mounting plate 3 and the outer mounting plate 9 and the corresponding clamping rod 19; the clamping rod 19 is pulled away from the inner mounting plate 3 and the outer mounting plate 9 in sequence, and the spring 20 is gradually stretched. Then, the inner grinding block 4 is placed inside the inner mounting plate 3, and the outer grinding block 10 is placed inside the outer mounting plate 9. Then, the clamping rod 19 is released, and the clamping rod 19 resets under the elastic force of the spring 20, thereby clamping and fixing the inner grinding block 4 and the outer grinding block 10, and completing the installation and fixation of the inner grinding block 4 and the outer grinding block 10.

[0020] Embodiment 2: On the basis of Embodiment 1, as Figure 4 and Figure 5 shown, the grinding wheel further includes a bidirectional lead screw 11 and a limit sliding sleeve 12. The left end of the sleeve 202 is rotatably connected to the bidirectional lead screw 11. A limit sliding sleeve 12 is installed at the left end of the bidirectional lead screw 11, and insertion holes 13 are provided on the side walls of the limit sliding sleeve 12 and the bidirectional lead screw 11; an insertion rod or other rotating tool is inserted into the insertion holes 13 on the limit sliding sleeve 12 and the bidirectional lead screw 11 respectively, and the rotating tool is rotated to make the bidirectional lead screw 11 and the limit sliding sleeve 12 rotate relative to each other, thereby enabling the limit sliding sleeve 12 to slide relatively towards the middle of the bidirectional lead screw 11, thereby being able to squeeze the connecting ring 5 to slide towards the middle of the bidirectional lead screw 11, making the connecting rings 5 at both ends of the bidirectional lead screw 11 approach each other, thereby rotating the hinge rod 6, thereby lifting the inner mounting plate 3 to adapt to the inner wall of a seamless steel pipe with a larger diameter. Rotate the rotating tool in the reverse direction to make the bidirectional lead screw 11 rotate, so that the limit sliding sleeve 12 slides relatively towards the end of the bidirectional lead screw 11, thereby being able to drive the connecting ring 5 to slide towards the end of the bidirectional lead screw 11, making the connecting rings 5 at both ends of the bidirectional lead screw 11 move away from each other, thereby rotating the hinge rod 6 in the reverse direction, thereby lowering the inner mounting plate 3 to adapt to the inner wall of a seamless steel pipe with a smaller diameter.

[0021] As Figure 6 , Figure 7 and Figure 8 shown, the grinding wheel further includes a pull plate 15 and a hinge plate 16. The connecting ring 5 on the right is connected to the pull plate 15, and the pull plate 15 is rotatably connected to the sliding frame 14 through the hinge plate 16; it also includes a lifting lead screw 17. The sliding frame 8 is rotatably connected to the lifting lead screw 17. The lifting lead screw 17 is threadedly connected to the slider 18, and the lower end of the lifting lead screw 17 is rotatably connected to the sliding frame 8 through a bearing 171; rotate the lifting lead screw 17 forward, thereby enabling the sliding frame 8 to slide upward relative to the slider 18, thereby lifting the sliding frame 8 upward, thereby raising the outer grinding block 10 to expand the grinding diameter. Rotate the lifting lead screw 17 in the reverse direction, thereby enabling the sliding frame 8 to slide downward relative to the slider 18, thereby lowering the sliding frame 8, thereby lowering the outer grinding block 10 to reduce the grinding diameter. In this way, it can meet the grinding and polishing requirements of seamless steel pipes with different outer diameters.

[0022] like Figure 9 As shown, the grinding wheel also includes a limit plate 26, a push plate 22, a rack 24, a gear 25, a second guide slide 7 and a threaded sleeve 21. The limit plate 26 is installed on the slide 8, and the push plate 22 is slidably inserted on the limit plate 26. The left end of the push plate 22 is connected to the rack 24, and the limit plate 26 is used to limit and guide the rack 24; the upper end of the lifting screw 17 is connected to the gear 25 meshing with the rack 24, the screw 2 is threadedly connected with the threaded sleeve 21, the right end of the sleeve 202 is slidably sleeved with the second guide slide 7, and the right end of the push plate 22 is slidably sleeved on the second guide slide 7, and the left end of the threaded sleeve 21 is rotatably connected to the second guide slide 7 through a bearing; the threaded sleeve 21 is rotated to make it move to the right end along the screw 2, thereby driving the second guide slide 7 and the push plate 22 to move right, thereby driving the rack 24 The gear 25 meshes with the gear 25 to the right, driving the lifting screw 17 to rotate, so that the sliding frame 8 slides upward relative to the slider 18, and then lifts the sliding frame 8 upward, so that the outer grinding block 10 rises to expand the grinding diameter. When the sliding frame 8 moves upward, it will drive the rack 24 and the push plate 22 to slide upward along the second guide slide 7 synchronously through the limit plate 26, and reversely rotate the threaded sleeve 21 to move it to the left end along the screw 2, thereby driving the rack 24 to mesh with the gear 25 to the left, and drive the lifting screw 17 to rotate in the opposite direction, so that the sliding frame 8 slides downward relative to the slider 18, thereby causing the sliding frame 8 to descend, and then causing the outer grinding block 10 to descend to reduce the grinding diameter; when the sliding frame 8 moves downward, it will drive the rack 24 and the push plate 22 to slide downward along the second guide slide 7 synchronously through the limit plate 26.

[0023] The technical principles of the embodiments of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present invention and cannot be interpreted in any way as limiting the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the embodiments of the present invention without creative work, and these methods will fall within the protection scope of the embodiments of the present invention.

Claims

1. An internal and external integrated polishing grinding wheel for an austenitic stainless steel seamless steel pipe, characterized in that: It includes a connector (1), a screw rod (2), a sleeve (202), an inner mounting plate (3), an inner grinding block (4), a connecting ring (5), a fixing component and a hinged rod (6). The left end of the connector (1) is connected to a screw rod (2), the left end of the screw rod (2) is connected to a sleeve (202), a limiting chute (201) is formed on the sleeve (202), a connecting ring (5) is slidably connected in the limiting chute (201), an inner mounting plate (3) is connected between the connecting rings (5) through a hinged rod (6), and an inner grinding block (4) is mounted on the inner mounting plate (3) through a fixing component. It also includes a first guiding slide frame (23), a sliding frame (14), a slider (18), a sliding bracket (8), an outer mounting plate (9) and an outer grinding block (10). The sleeve (202) is slidably sleeved with a first guiding slide frame (23), the upper part of the first guiding slide frame (23) is slidably sleeved with a sliding frame (14), the upper part of the sliding frame (14) is connected to a slider (18), the outer end of the first guiding slide frame (23) is provided with a sliding bracket (8), a lifting chute (801) is formed on the sliding bracket (8), the sliding bracket (8) is slidably connected to the slider (18) through the lifting chute (801), the sliding bracket (8) is connected to an outer mounting plate (9), and an outer grinding block (10) is mounted in the outer mounting plate (9) through a fixing component.

2. The internal and external integrated polishing grinding wheel for austenitic stainless steel seamless steel pipes according to claim 1, wherein: The fixing component includes a clamping rod (19) and a spring (20). The side walls of the inner mounting plate (3) and the outer mounting plate (9) are both slidably inserted with clamping rods (19), and springs (20) are connected between the inner mounting plate (3) and the outer mounting plate (9) and the corresponding clamping rods (19).

3. An internal and external integrated polishing grinding wheel for an austenitic stainless steel seamless steel pipe according to claim 2, characterized in that: The grinding wheel further includes a bidirectional lead screw (11) and a limiting sliding sleeve (12). The left end of the sleeve (202) is rotatably connected to a bidirectional lead screw (11), the left end of the bidirectional lead screw (11) is provided with a limiting sliding sleeve (12), and insertion holes (13) are formed on the side walls of the limiting sliding sleeve (12) and the bidirectional lead screw (11).

4. An internal and external integrated polishing grinding wheel for austenitic stainless steel seamless steel pipes according to claim 3, characterized in that: The grinding wheel further includes a pulling plate (15) and a hinged plate (16). The right connecting ring (5) is connected to a pulling plate (15), and the pulling plate (15) is rotatably connected to the sliding frame (14) through a hinged plate (16).

5. An internal and external integrated polishing grinding wheel for an austenitic stainless steel seamless steel pipe according to claim 4, characterized in that: The grinding wheel further includes a lifting lead screw (17). The sliding bracket (8) is rotatably connected to a lifting lead screw (17), and the lifting lead screw (17) is threadedly connected to the slider (18).

6. An internal and external integrated polishing grinding wheel for an austenitic stainless steel seamless steel pipe according to claim 5, characterized in that: The grinding wheel further includes a limit plate (26), a push plate (22), a rack (24), a gear (25), a second guiding carriage (7) and a threaded sleeve (21). A limit plate (26) is installed on the sliding carriage (8). A push plate (22) is slidably inserted into the limit plate (26). A rack (24) is connected to the left end of the push plate (22). A gear (25) that meshes with and drives the rack (24) is connected to the upper end of the lifting lead screw (17). A threaded sleeve (21) is threadedly connected to the screw rod (2). A second guiding carriage (7) is slidably sleeved on the right end of the sleeve (202). The right end of the push plate (22) is slidably sleeved on the second guiding carriage (7). A rotational connection through a bearing is provided between the left end of the threaded sleeve (21) and the second guiding carriage (7).

7. An internal and external integrated polishing grinding wheel for an austenitic stainless steel seamless steel pipe according to claim 6, characterized in that: A rotational connection through a bearing (171) is provided between the lower end of the lifting lead screw (17) and the sliding carriage (8).

8. An integrated inner and outer polishing grinding wheel for austenitic stainless steel seamless steel pipes according to claim 7, characterized in that: Three groups of the inner grinding blocks (4) and the outer grinding blocks (10) are provided, and they are symmetrically arranged around the sleeve (202).

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