Fixing device for metal pipe fitting machining

Abstract

The utility model discloses a fixing device for processing a metal pipe fitting, which comprises a lathe main body, a rotating chuck is arranged on the lathe main body, a clamping jaw is arranged on the rotating chuck, a supporting assembly is arranged at the central position of the rotating chuck, the supporting assembly comprises an upper cover plate, a lower cover plate and a magnetorheological elastomer, the magnetorheological elastomer is tubular, and the upper cover plate and the lower cover plate are arranged on the lathe main body. A pouring opening is formed in the lower cover plate, a pouring device is arranged in the rotating chuck, the pouring opening is connected with the pouring device through a through hole in the rotating chuck, a first coil is fixedly installed on the outer side face of the upper cover plate, and a second coil is fixedly installed on the outer side face of the lower cover plate. The device has the beneficial effects that the first coil and the second coil are electrified to generate an electromagnetic field with certain field intensity, so that the magneto-rheological elastic body is hardened, the hardened magneto-rheological elastic body supports the inner pipe wall of the pipe fitting, and the possibility of deformation in the clamping process of the pipe fitting with the thin pipe wall is reduced.

Description

A fixing device for processing metal pipe fittings Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a fixing device for machining metal pipe fittings. Background Technology

[0002] Pipe fittings are a general term for components in a pipeline system that serve to connect, control, change direction, divert flow, seal, and support. Steel pipe fittings are all pressure-bearing pipe fittings. Based on different processing techniques, they are divided into four categories: butt-welded pipe fittings, socket-welded and threaded pipe fittings, and flanged pipe fittings.

[0003] Pipe fittings need to be installed on equipment during processing. Existing pipe fitting processing equipment mainly includes horizontal lathes and vertical lathes. Among them, the spindle of the vertical lathe is vertical, and the vertical lathe is equipped with a chuck fixedly connected to the spindle. The outer surface of the pipe fitting is clamped and fixed by the chuck. This can easily cause the pipe fitting to deform and affect the product quality. Summary of the Invention

[0004] In view of the above-mentioned prior art, the present invention provides a fixing device for processing metal pipe fittings, which mainly solves the technical problems existing in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0006] A fixing device for processing metal pipe fittings includes a lathe body, a rotary chuck on the lathe body, jaws on the rotary chuck, and a support assembly installed at the center of the rotary chuck. The support assembly includes an upper cover plate, a lower cover plate, and a magnetorheological elastomer. The magnetorheological elastomer is tubular. The upper cover plate is fixed to the top of the magnetorheological elastomer, and the lower cover plate is fixed to the bottom of the magnetorheological elastomer. The center of the upper cover plate is connected to the center of the lower cover plate via a connecting rod. The lower cover plate is fixedly installed in the middle of the rotary chuck. The lower cover plate has a filling port. A filling device is installed inside the rotary chuck. The filling port is connected to the filling device through a through hole in the rotary chuck. A first coil is fixedly installed on the outer side of the upper cover plate, and a second coil is fixedly installed on the outer side of the lower cover plate.

[0007] Preferably, the infusion device includes an air bladder and a liquid storage chamber, wherein the liquid storage chamber is provided with a plurality of air bladders.

[0008] Preferably, the storage chamber is filled with magnetorheological fluid.

[0009] Preferably, the rotary chuck has a vertical shaft at its bottom, and the vertical shaft is connected to the motor.

[0010] Preferably, the upper cover plate and the lower cover plate are made of non-magnetic steel.

[0011] Preferably, the axial height of the magnetorheological elastomer is the same as the height of the chuck.

[0012] Preferably, the claw has a soft pad on the side facing the support component.

[0013] Preferably, the magnetorheological elastomer is a silicone rubber-based magnetorheological elastomer.

[0014] Preferably, the rotary chuck has a positioning screw hole at its center, and the bottom of the lower cover plate has a screw corresponding to the positioning screw hole. The lower cover plate is connected to the rotary chuck through the screw.

[0015] The beneficial effects of this utility model are as follows: the outer wall of the pipe fitting is clamped and fixed by the jaws on the rotating chuck. Liquid is injected into the support assembly through the injection device, causing the magnetorheological elastomer of the support assembly to expand until it is tightly attached to the inner wall of the pipe fitting. The first coil and the second coil are energized to generate an electromagnetic field with a certain field strength, causing the magnetic particles inside the magnetorheological elastomer to aggregate under the action of electromagnetic force and thus harden. The hardened magnetorheological elastomer supports and fixes the pipe fitting. Therefore, the support assembly can fix pipe fittings of different models, which is highly applicable. At the same time, the hardened magnetorheological elastomer supports the inner wall of the pipe fitting, reducing the possibility of deformation during the clamping process of thin-walled pipe fittings. Attached Figure Description

[0016] Figure 1 is a schematic diagram of a fixing device for processing metal pipe fittings according to an embodiment of this application;

[0017] Figure 2 is a cross-sectional view of a fixing device for processing metal pipe fittings according to an embodiment of this application;

[0018] Figure 3 is an enlarged schematic diagram of part A in Figure 2;

[0019] Explanation of icon numbers:

[0020] 1. Lathe body; 2. Rotary chuck; 3. Chuck; 4. Support assembly; 401. Upper cover plate; 402. Lower cover plate; 403. Magnetorheological elastomer; 404. Connecting rod; 5. Filling port; 6. Filling device; 601. Airbag; 602. Liquid storage chamber; 7. First coil; 8. Second coil; 9. Vertical shaft; 10. Motor; 11. Soft pad; 12. Positioning screw hole; 13. Screw. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0022] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] Example 1

[0024] Referring to Figures 1-3, this application provides a fixing device for processing metal pipe fittings, including a lathe body 1, a rotary chuck 2 on the lathe body 1, jaws 3 on the rotary chuck 2, and a support assembly 4 installed at the center of the rotary chuck 2. The support assembly 4 includes an upper cover plate 401, a lower cover plate 402, and a magnetorheological elastomer 403. The magnetorheological elastomer 403 is tubular, and the upper cover plate 401 is fixed to the top of the magnetorheological elastomer 403, while the lower cover plate 402 is fixed to the top of the magnetorheological elastomer 403. At the bottom of the variable elastic body 403, the center of the upper cover plate 401 is connected to the center of the lower cover plate 402 via a connecting rod 404. The lower cover plate 402 is fixedly installed in the middle of the rotating chuck 2. The lower cover plate 402 is provided with an injection port 5. The rotating chuck 2 is provided with an injection device 6. The injection port 5 is connected to the injection device 6 through a through hole in the rotating chuck 2. A first coil 7 is fixedly installed on the outer side of the upper cover plate 401, and a second coil 8 is fixedly installed on the outer side of the lower cover plate 402.

[0025] In use, the metal pipe to be processed is placed vertically in the center of the rotating chuck 2, and the outer wall of the pipe is clamped and fixed by the jaws 3. The support component 4 is located inside the pipe. The filling device 6 fills the support component 4 with liquid through the filling port 5, causing the magnetorheological elastomer 403 fixed between the upper cover plate 401 and the lower cover plate 402 to slowly expand until the magnetorheological elastomer 403 is tightly attached to the inner wall of the pipe. The first coil 7 located outside the upper cover plate 401 and the second coil 8 located outside the lower cover plate 402 are simultaneously energized, generating an electromagnetic field with a certain field strength. This causes the magnetic particles inside the magnetorheological elastomer 403 to aggregate under the action of electromagnetic force, thus inducing hardening. The hardened magnetorheological elastomer 403 supports the pipe. Therefore, the support component 4 can fix different types of pipe fittings, making it highly adaptable. At the same time, the hardened magnetorheological elastomer 403 supports the inner wall of the pipe fitting, reducing the possibility of deformation during the clamping process of thin-walled pipe fittings. After the pipe fitting is processed, the control claw 3 moves away from the pipe fitting, and the liquid located in the support component 4 is discharged. The DC current supplied to the first coil 7 and the second coil 8 is stopped. When the magnetorheological elastomer 403 returns to its original state, the processed pipe fitting is taken out. The pipe fitting is fixed by using the property of the magnetorheological elastomer 403 to harden under the action of the magnetic field. Therefore, the entire pipe fitting fixing process is highly automated, reducing a lot of labor, while being able to stably fix the pipe fitting, making it convenient for people to use.

[0026] Specifically, the infusion device 6 includes an air bladder 601 and a liquid storage chamber 602, with multiple air bladders 601 disposed within the liquid storage chamber 602. By inflating the air bladders 601, the liquid in the liquid storage chamber 602 is squeezed into the support assembly 4. Alternatively, the liquid in the support assembly 4 can be recovered and reused by deflating the air bladders 601.

[0027] Specifically, the storage chamber 602 is filled with magnetorheological fluid. After the magnetorheological fluid enters the support assembly 4, it is solidified by the electromagnetic field generated by the first coil 7 and the second coil 8, and operates in a compression mode to ensure the rigidity of the support.

[0028] Specifically, the rotary chuck 2 has a vertical shaft 9 at its bottom, which is connected to the motor 10. The rotary chuck 2 is connected to the motor 10 via the vertical shaft 9 at its bottom and is driven to rotate by the motor 10, which facilitates subsequent cutting and processing of the pipe fittings.

[0029] Specifically, the upper cover plate 401 and the lower cover plate 402 are made of non-magnetic steel. The use of non-magnetic steel in the upper cover plate 401 and the lower cover plate 402 ensures the controllability of the magnetic field generated by the energized first coil 7 and second coil 8, effectively preventing magnetic leakage.

[0030] Specifically, the axial height of the magnetorheological elastomer 403 is the same as the height of the clamping jaw 3. This matching height ensures that the hardened magnetorheological elastomer 403 and the clamping jaw 3 clamp and fix the inner and outer walls of the pipe fitting at the same height, reducing the possibility of deformation during clamping of thin-walled pipe fittings.

[0031] Specifically, the magnetorheological elastomer 403 is a silicone rubber-based magnetorheological elastomer 403. The silicone rubber-based magnetorheological elastomer 403 has moderate stiffness, ensuring the supporting rigidity of the hardened silicone rubber magnetorheological elastomer 403.

[0032] Example 2

[0033] Please refer to Figures 1-3. The difference between this embodiment and Embodiment 1 is that the claw 3 has a soft pad 11 on the side facing the support component 4. The soft pad 11 on the claw 3 protects the outer wall of the pipe when the claw 3 clamps and fixes the pipe, reducing the wear and tear on the outer wall of the pipe caused by the claw 3.

[0034] Specifically, the rotary chuck 2 has a positioning screw hole 12 at its center, and the bottom of the lower cover plate 402 has a screw 13 corresponding to the positioning screw hole 12. The lower cover plate 402 is connected to the rotary chuck 2 through the screw 13. The support assembly 4 is threadedly connected to the positioning screw hole 12 on the rotary chuck 2 through the screw 13 at the bottom of the lower cover plate 402, which improves the stability of the support assembly 4.

[0035] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. A fixing device for processing metal pipe fittings, characterized in that, The lathe includes a lathe body, a rotary chuck with jaws, and a support assembly at its center. The support assembly includes an upper cover plate, a lower cover plate, and a magnetorheological elastomer. The magnetorheological elastomer is tubular. The upper cover plate is fixed to the top of the magnetorheological elastomer, and the lower cover plate is fixed to the bottom. The center of the upper cover plate is connected to the center of the lower cover plate via a connecting rod. The lower cover plate is fixedly installed in the middle of the rotary chuck. A filling port is provided on the lower cover plate. A filling device is provided inside the rotary chuck, and the filling port is connected to the filling device through a through hole in the rotary chuck. A first coil is fixedly installed on the outer side of the upper cover plate, and a second coil is fixedly installed on the outer side of the lower cover plate.

2. The fixing device for processing metal pipe fittings according to claim 1, characterized in that, The infusion device includes an air bladder and a liquid storage chamber, wherein the liquid storage chamber is provided with a plurality of air bladders.

3. The fixing device for processing metal pipe fittings according to claim 2, characterized in that, The storage chamber is filled with magnetorheological fluid.

4. The fixing device for processing metal pipe fittings according to claim 1, characterized in that, The rotary chuck has a vertical shaft at its bottom, which is connected to a motor.

5. The fixing device for processing metal pipe fittings according to claim 1, characterized in that, The upper cover plate and the lower cover plate are made of non-magnetic steel.

6. The fixing device for processing metal pipe fittings according to claim 1, characterized in that, The axial height of the magnetorheological elastomer is the same as the height of the chuck.

7. The apparatus of claim 1 wherein: The magnetorheological elastomer is a silicone rubber-based magnetorheological elastomer.

8. A fixing device for processing metal pipe fittings according to claim 1, characterized in that, The claw has a soft pad on the side facing the support component.

9. The apparatus of claim 1 wherein: The rotary chuck has a positioning screw hole at its center, and the bottom of the lower cover plate has a screw corresponding to the positioning screw hole. The lower cover plate is connected to the rotary chuck through the screw.

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