A bimetallic composite embedded bushing manufacturing device and method

Abstract

The present invention discloses a bimetallic composite embedded bushing manufacturing device and method, which relates to the technical field of mechanical parts processing. The device includes a workpiece clamping chuck, a rolling process device and a resistance welding external roller ring; the workpiece clamping chuck is used to clamp and fix the bushing to be processed; the rolling process device includes a rotating motor, a coupling, an ultrasonic generator, a bending ultrasonic vibration amplitude transformer and a hydraulic rolling module connected in sequence, and the hydraulic rolling module completes the processing action from the inside of the bushing to be processed; the resistance welding external roller ring is sleeved on the outer periphery of the bushing to be processed, and cooperates with the hydraulic rolling module to complete the composite welding processing; the resistance welding external roller ring and the hydraulic rolling module are electrically connected with a resistance welding power supply. The device and method of the present invention realize the processing of the inner surface of bushings of different diameters by arranging a rolling process device inside the bushing, thereby achieving the purpose of bimetallic composite, overcoming the shortcomings of the prior art, and improving the interface bonding strength of the bimetallic composite and the production efficiency of the bimetallic composite bushing.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical component processing, and in particular relates to a bimetallic composite embedded bushing manufacturing device and method. Background Art

[0002] The application scenarios of bushings are very wide, including valves, bearings, automobile shock absorbers, power transformers and vehicle suspension systems. In various harsh working environments, bushings withstand vibration, friction and corrosion to protect the wrapped parts. Bushings play an indispensable role in improving the performance of equipment and extending the service life of equipment. Bushings are worn due to long-term friction, and they must be replaced when their inner surface is worn to a certain extent. Therefore, designing and manufacturing a bimetallic composite bushing with an outer layer material of alloy structural steel and an inner layer material of high-strength and wear-resistant tin bronze material, which provides guiding and lubrication while improving the wear resistance of the inner surface of the bushing, has become a technical problem that needs to be urgently solved by technical personnel in this field.

[0003] In recent years, there have been studies on methods for preparing bimetallic composite materials, but most of them have a single usage scenario and insufficient technical adaptability, which cannot meet the production and manufacturing requirements of bimetallic bushings. For example, the utility model patent with publication number CN216237282U proposes a coaxial powder feeding laser cladding head for laser cladding of the inner surface of pipeline parts. Before laser cladding, the pipe wall needs to be pre-processed and non-destructive testing is required, which may affect the internal structure of the bushing. At the same time, the alloy powder clad on the pipe wall is not suitable as the inner layer material of the bushing. For example, the invention patent with publication number CN112974071B proposes a coating surface modification device and working method based on thermal spraying process. The device and method will locally heat the internal environment of the workpiece, which may affect the original performance of the alloy structural steel of the outer layer material of the bushing. In addition, the bonding performance of the inner and outer layer materials of the spraying process cannot be guaranteed.

[0004] Therefore, it is necessary to design a bimetallic composite embedded bushing manufacturing device and method to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a bimetallic composite embedded bushing manufacturing device and method to solve the problem that the molding method in the prior art affects the internal structure of the bushing and cannot ensure the bonding performance of the inner and outer layer materials.

[0006] To achieve the above-mentioned purpose, on the one hand, the present invention provides a bimetallic composite embedded bushing manufacturing device, including a bimetallic composite bushing manufacturing device connected by resistance welding and ultrasonic vibration assisted rolling, to solve the problem that the forming device and method in the prior art affect the internal structure of the bushing and the bonding performance of the inner and outer layer materials cannot be guaranteed, and the device includes:

[0007] A workpiece clamping chuck is used to clamp and fix the bushing to be processed from the outside;

[0008] A rolling process device, the rolling process device comprises a rotating motor, a coupling, an ultrasonic generator, a bending ultrasonic vibration amplitude transformer and a hydraulic rolling module connected in sequence, the hydraulic rolling module completes the processing action from the inner side of the bushing to be processed, the hydraulic rolling module comprises a hydraulic cylinder body, a plurality of hydraulic roller support end covers elastically connected to the hydraulic cylinder body are uniformly distributed along the circumferential side of the hydraulic cylinder body, and each of the hydraulic roller support end covers is rotatably connected to a hydraulic roller;

[0009] The resistance welding external roller is sleeved on the outer periphery of the bushing to be processed and cooperates with the hydraulic rolling module to complete the composite welding process; the resistance welding external roller and the hydraulic rolling module are electrically connected with a resistance welding power supply.

[0010] Preferably, the hydraulic roller is detachably connected to the hydraulic roller support end cover.

[0011] Preferably, the hydraulic roller support end cover has two ear plates protruding from one side away from the hydraulic cylinder body, a hydraulic roller support mandrel is detachably provided between the two ear plates, and the hydraulic roller is rotatably connected to the hydraulic roller support mandrel.

[0012] Preferably, the hydraulic rollers include two types, one is a first hydraulic roller with a knurled roller surface, and the other is a second hydraulic roller with a smooth roller surface.

[0013] Preferably, hydraulic roller support end cover limit blocks fixedly connected to the circumferential side of the hydraulic cylinder body are provided on both sides of the hydraulic roller support end cover, and flanges protrude along the edges of the two hydraulic roller support end cover limit blocks facing each other, and the two flanges limit the hydraulic roller support end cover from the moving direction of the hydraulic roller support end cover.

[0014] Preferably, the interior of the hydraulic cylinder body is hollow to form a cavity, and an oil inlet and an oil outlet penetrating into the cavity are provided on the outer peripheral surface of the hydraulic cylinder body.

[0015] Preferably, the end surface of the hydraulic cylinder body is sealingly connected with a hydraulic cylinder end cover, and an end shaft extends from the center of the hydraulic cylinder end cover toward the inside of the cavity of the hydraulic cylinder body.

[0016] Preferably, a return spring corresponding to the hydraulic roller support end cover is fixedly connected to the circumferential side of the end shaft, and the other end of the return spring is fixedly connected to a piston rod. The piston rod slides radially along the circumferential side of the hydraulic cylinder body, and the end of the piston rod away from the return spring is fixedly connected to the hydraulic roller support end cover by a piston rod bolt.

[0017] On the other hand, the present invention also provides a method for manufacturing a bimetallic composite embedded bushing, using any of the bimetallic composite embedded bushing manufacturing devices described above, the method comprising the following steps:

[0018] Step S1, fixing the bushing to be processed, extending the hydraulic rolling module of the rolling process device into the inner side of the bushing to be processed, so that the hydraulic roller contacts the inner surface of the bushing to be processed and generates pre-pressure;

[0019] Step S2, when the pre-pressure reaches a preset threshold, the rotary motor is started to drive the hydraulic rolling module to rotate at a high speed, and a rough texture surface with a knurled texture is pre-processed on the inner surface of the bushing to be processed;

[0020] Step S3, put the liner into the bushing to be processed, readjust the position so that the bending ultrasonic vibration amplitude transformer on the rolling process device coincides with the center line of the bushing to be processed, extend the hydraulic rolling module of the rolling process device into the inner side of the bushing to be processed, make the hydraulic roller contact with the inner surface of the bushing to be processed and generate pre-pressure, and install the resistance welding external roller ring on the outer periphery of the bushing to be processed;

[0021] Step S4, when the pre-pressure reaches the preset threshold, start the resistance welding power supply, and generate welding current through the resistance between the resistance welding external roller and the hydraulic roller to make the lining and the inner surface of the bushing to be processed tightly combined; use the ultrasonic generator to generate axial vibration on the high-speed rotating hydraulic roller to complete the composite welding of the lining and the inner surface of the bushing to be processed.

[0022] Preferably, in step S1 and step S2, a hydraulic roller with a knurled texture is used to pre-process the inner surface of the bushing to be processed.

[0023] Compared with the prior art, the present invention at least discloses the following beneficial effects:

[0024] The manufacturing device and manufacturing method of the present invention can efficiently achieve the forming and processing of bimetallic composite embedded bushings. According to the diameter and different internal structures of the bushing, the telescopic length of the hydraulic roller can be adjusted by controlling the working state of the hydraulic system in the rolling process device; when the rolling process device is working, resistance welding and ultrasonic vibration assisted manufacturing devices are used to ensure the original performance of the outer layer material and improve the quality of the bimetallic composite. The technical solution of the present invention solves the problems that the bushing manufacturing device in the prior art has a single use scenario, insufficient technical adaptability, cannot meet the production and manufacturing requirements of the bimetallic bushing, and affects the internal structure of the bushing. On the basis of ensuring the smooth and safe production and manufacturing process of the bimetallic composite bushing, the device and method of the present invention improve the bimetallic composite interface bonding strength and the production efficiency of the bimetallic composite bushing. Through the rolling device assisted by resistance welding and ultrasonic vibration, the problem of insufficient bimetallic composite interface bonding strength is solved, avoiding the waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 The structure and use effect diagram of the embodiment of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a rolling process device in an embodiment of the present invention;

[0028] Figure 3 A partial enlarged view of a hydraulic rolling module in an embodiment of the present invention;

[0029] Figure 4 It is an orthographic projection view of the hydraulic rolling module in an embodiment of the present invention;

[0030] Figure 5 A cross-sectional view of a hydraulic rolling module according to an embodiment of the present invention Figure 1 ;

[0031] Figure 6 A cross-sectional view of a hydraulic rolling module according to an embodiment of the present invention Figure 2 ;

[0032] Figure 7 It is a position relationship diagram of the rolling process device, the resistance welding external rolling ring and the bushing to be processed when they are matched in the embodiment of the present invention;

[0033] Figure 8 The position relationship diagram of the sleeve to be processed and the lining before composite welding in the embodiment of the present invention

[0034] Fig. 9 It is a schematic diagram of the state of the embodiment of the present invention during knurling processing;

[0035] Fig.10 It is a schematic diagram of the state of an embodiment of the present invention during composite welding processing.

[0036] In the figure: 1. rolling process device; 2. resistance welding external roller ring; 3. workpiece clamping chuck; 4. resistance welding power supply; 5. rotating motor; 6. coupling; 7. ultrasonic generator; 8. ultrasonic generator power supply; 9. bending ultrasonic vibration amplitude transformer; 10. hydraulic rolling module; 101. hydraulic cylinder body; 102. hydraulic cylinder body end cover; 103. end cover sealing ring; 104. hydraulic roller support end cover limit block; 105. hydraulic roller Support end cover; 106, hydraulic roller support mandrel; 107, hydraulic roller; 107a, first hydraulic roller; 107b, second hydraulic roller; 108, piston rod; 109, return spring; 110, oil inlet; 111, hydraulic cylinder seal ring; 112, hydraulic cylinder bolt; 113, oil outlet; 114, piston rod seal ring; 115, piston rod bolt; 116, nut; 11, lining; 12, bushing to be processed. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figures 1 to 10As shown, an embodiment of the present invention provides a bimetallic composite embedded bushing manufacturing device, including a rolling process device 1, a resistance welding external rolling ring 2, a workpiece clamping chuck 3 and a resistance welding power supply 4, wherein the rolling process device 1 includes a rotating motor 5, a coupling 6 connected to the output shaft of the rotating motor 5, an ultrasonic generator 7 connected to the coupling 6, a bending ultrasonic vibration amplitude rod 9 located at the end of the ultrasonic generator 7 away from the coupling 6, and a hydraulic rolling module 10 fixed to the end of the bending ultrasonic vibration amplitude rod 9 away from the ultrasonic generator 7, wherein the ultrasonic generator 7 is connected to an ultrasonic generator power supply 8, the coupling 6 is arranged between the bending ultrasonic vibration amplitude rod 9 and the rotating motor 5, and the rotating motor 5 transmits torque to the coupling 6. When in use, the workpiece clamping chuck 3 is fixedly installed on the equipment machine tool, and is used to clamp and fix the bushing 12 to be processed. The resistance welding external roller 2 is arranged on the outside of the bushing 12 to be processed, and the hydraulic rolling module 10 of the rolling process device 1 extends into the interior of the bushing 12 to be processed. One end of the resistance welding power supply 4 is electrically connected to the resistance welding external roller 2, and the other end is electrically connected to the hydraulic roller 107 in the hydraulic rolling module 10. After power is turned on, the resistance between the resistance welding external roller 2 and the hydraulic roller 107 generates a welding current, so that the lining 11 is tightly combined with the inner surface of the bushing 12 to be processed, and then the inner surface of the bushing 12 to be processed is mechanically processed by the hydraulic process device to improve the surface bonding strength between the lining 11 and the bushing 12 to be processed.

[0040] Specifically, Figures 3 to 6As shown, the hydraulic rolling module 10 includes a hydraulic cylinder body 101, and a plurality of hydraulic roller support end covers 105 are evenly distributed on the circumferential side of the hydraulic cylinder body 101. Each hydraulic roller support end cover 105 is elastically connected to the hydraulic cylinder body 101 in a radial direction, and each hydraulic roller support end cover 105 is rotatably connected to a hydraulic roller 107. The hydraulic roller 107 is divided into a first hydraulic roller 107a and a second hydraulic roller 107b, wherein the first hydraulic roller 107a is a knurling wheel, used for rolling a rough knurling texture on the inner surface of the bushing 12 to be processed, completing the knurling process, so as to carry out the subsequent fixation of the lining 11; and the second hydraulic roller 107b is a rolling roller, used for resistance welding and ultrasonic vibration-assisted operations on the lining 11 and the bushing 12 to be processed. The interior of the hydraulic cylinder body 101 is a cavity structure filled with hydraulic oil. The end face of the hydraulic cylinder body 101 is sealed and connected with the hydraulic cylinder body end cover 102, and an end cover sealing ring 103 is placed between the hydraulic cylinder body end cover 102 and the hydraulic cylinder body 101. The end of the hydraulic cylinder body 101 connected to the bending ultrasonic vibration horn 9 is fastened to the bending ultrasonic vibration horn 9 through a hydraulic cylinder body bolt 112, and a hydraulic cylinder body sealing ring 111 is placed between the two. An oil inlet 110 and an oil outlet 113 are opened on the circumferential side of the hydraulic cylinder body 101 near the bending ultrasonic vibration horn 9. The oil inlet 110 and the oil outlet 113 are connected to the cavity of the hydraulic cylinder body 101, and are used to inject / discharge hydraulic oil into the cavity.

[0041] Furthermore, two spaced ear plates are protruded on one side of the hydraulic roller support end cover 105 away from the hydraulic cylinder body 101, and the spacing direction of the two ear plates is in the same direction as the axial direction of the hydraulic cylinder body 101. A hydraulic roller support mandrel 106 is connected between the two ear plates, and both ends of the hydraulic roller support mandrel 106 are fastened to the outer sides of the two ear plates by nuts 116. The hydraulic roller 107 is rotatably connected to the hydraulic roller support mandrel 106 located between the two ear plates. The hydraulic roller 107 can be removed from the hydraulic roller support mandrel 106 by removing the nuts 116, so as to facilitate the replacement of the first hydraulic roller 107a and the second hydraulic roller 107b.

[0042] Furthermore, hydraulic roller support end cover limit blocks 104 fixedly connected to the circumferential side of the hydraulic cylinder body 101 are provided on both sides of the hydraulic roller support end cover 105, and flanges protrude along the edges of the two hydraulic roller support end cover limit blocks 104 facing each other. The two flanges limit the hydraulic roller support end cover 105 from the moving direction (radial direction of the hydraulic cylinder body 101) so that its maximum shape is within the range limited by the hydraulic roller support end cover limit blocks 104.

[0043] Furthermore, the elastic connection between the hydraulic roller support end cover 105 and the hydraulic cylinder body 101 is achieved through the following structure: Figure 5As shown, the hydraulic roller support end cover 105 and the hydraulic cylinder body 101 are elastically connected through the piston rod 108 and the return spring 109. Specifically, the center of the hydraulic cylinder body end cover 102 extends an end shaft to the inside of the cavity of the hydraulic cylinder body 101, and the peripheral side of the end shaft is fixedly connected with the return spring 109 corresponding to each hydraulic roller support end cover 105. The other end of the return spring 109 is fixedly connected to the piston rod 108. The piston rod 108 slides on the peripheral side of the hydraulic cylinder body 101 along the radial direction of the hydraulic cylinder body 101, and the piston rod 108 is fixedly connected to the sliding surface where the piston rod 108 and the hydraulic cylinder body 101 meet. The sealing ring 114 and the piston rod sealing ring 114 form a piston-type seal with the hydraulic cylinder body 101 to prevent the hydraulic oil from flowing out. A threaded hole is formed at the end of the piston rod 108 away from the return spring 109. The piston rod 108 is fixed to the hydraulic roller support end cover 105 by the piston rod bolt 115. Under the pressure of the hydraulic oil, the hydraulic roller support end cover 105 can extend radially outward and be limited below the two hydraulic roller support end cover limit blocks 104. When the hydraulic oil pressure is released, under the action of the return spring 109, the hydraulic roller support end cover 105 retracts to the initial position.

[0044] In the bimetallic composite embedded bushing manufacturing device of the embodiment of the present invention, a rolling process device 1 is arranged inside the bushing to realize the processing of the inner surface of bushings with different diameters, thereby achieving the purpose of bimetallic composite more efficiently and conveniently. Compared with the prior art, the hydraulic rolling process device 1 of the present invention has better adaptability to the bushing and will not have adverse effects on the internal structure of the bushing. In addition, the bimetallic composite quality is optimized by the rolling process device 1, and the disadvantage that the alloy powder clad on the pipe wall is not suitable as the inner layer material of the bushing is overcome. In addition, while ensuring the original performance of the alloy structural steel of the outer layer material of the bushing, the device of the present invention improves production efficiency and reduces material waste through resistance welding and ultrasonic vibration assisted manufacturing devices.

[0045] The embodiment of the present invention further provides a method for manufacturing a bimetallic composite embedded bushing, using the bimetallic composite embedded bushing manufacturing device described in the above embodiment, the method comprises:

[0046] Step S1, fix the bushing 12 to be processed on the processing platform through the workpiece clamping chuck 3, install the first hydraulic roller 107a with knurled texture on the rolling process device 1, and extend the hydraulic rolling module 10 of the rolling process device 1 into the inner side of the bushing 12 to be processed, so that the first hydraulic roller 107a contacts the inner surface of the bushing 12 to be processed and generates pre-pressure.

[0047] In some embodiments, an oil pump is used to inject hydraulic oil into the hydraulic cylinder body 101. By controlling the pressure of the hydraulic oil, the radial extension length of the hydraulic roller 107 is controlled and adjusted, thereby controlling and adjusting the pre-pressure between the hydraulic roller 107 and the inner surface of the bushing 12 to be processed.

[0048] Step S2, when the pre-pressure reaches the preset threshold, start the rotating motor 5, and the rotating motor 5 transmits torque to the bending ultrasonic vibration transformer 9 through the coupling 6, thereby driving the hydraulic rolling module 10 to rotate at high speed, completing the pre-processing of the inner surface of the bushing 12 to be processed, and processing a rough texture surface with a knurled texture on the inner surface of the bushing 12 to be processed, so as to facilitate the subsequent fixation of the lining 11.

[0049] Step S3, place the lining 11 into the bushing 12 to be processed, the lining 11 is made of tin bronze, and the height and position of the rolling process device 1 are readjusted so that the bending ultrasonic vibration amplitude transformer 9 on the rolling process device 1 coincides with the center line of the set to be processed; replace the hydraulic roller 107 on the rolling process device 1 with the second hydraulic roller 107b, and extend the hydraulic rolling module 10 of the rolling process device 1 into the bushing 12 to be processed, so that the second hydraulic roller 107b contacts the inner surface of the bushing 12 to be processed and generates pre-pressure.

[0050] Step S4, when the pre-pressure reaches the preset threshold, start the resistance welding power supply 4, generate welding current through the resistance between the resistance welding external roller ring 2 and the second hydraulic roller 107b, so that the lining 11 is tightly combined with the inner surface of the bushing 12 to be processed, start the rotating motor 5 to transmit torque to the bending ultrasonic vibration amplitude transformer 9 through the coupling 6, thereby driving the hydraulic rolling module 10 to rotate at high speed, and at the same time turn on the ultrasonic generator power supply 8, the ultrasonic generator power supply 8 sends an ultrasonic frequency current signal to the ultrasonic generator 7, the ultrasonic generator 7 uses the inverse piezoelectric effect of piezoelectric ceramics to send high-frequency mechanical vibration, and the bending ultrasonic vibration amplitude transformer 9 will convert energy; the second hydraulic roller 107b vibrates axially and makes high-speed rotational motion in the radial direction of the bushing 12 to be processed. The axial vibration is beneficial to reducing the surface roughness of the tin bronze, and the radial rotational motion is beneficial to improving the bonding strength between the tin bronze lining 11 and the inner surface of the bushing 12 to be processed.

[0051] Step S5, after the processing is completed, turn off the ultrasonic generator power supply 8, turn off the resistance welding power supply 4, unload the hydraulic oil through the oil outlet 113, the second hydraulic roller 107b is reset by the reset spring 109, and the hydraulic rolling module 10 is withdrawn.

[0052] The details not described in detail in the present invention are all conventional technical means well known to those skilled in the art.

[0053] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for manufacturing a bimetallic composite embedded bushing, characterized in that: The bimetallic composite embedded bushing manufacturing method is implemented based on a bimetallic composite embedded bushing manufacturing device, and the device includes: A workpiece clamping chuck (3) for clamping and fixing the bushing (12) to be processed from the outside; A rolling process device (1), the rolling process device (1) comprising a rotating motor (5), a coupling (6), an ultrasonic generator (7), a bending ultrasonic vibration amplitude transformer (9) and a hydraulic rolling module (10) connected in sequence, the hydraulic rolling module (10) completing the processing action from the inside of a bushing (12) to be processed, the hydraulic rolling module (10) comprising a hydraulic cylinder body (101), a plurality of hydraulic roller support end covers (105) elastically connected to the hydraulic cylinder body (101) uniformly distributed along the circumferential side of the hydraulic cylinder body (101), and each of the hydraulic roller support end covers (105) being rotatably connected to a hydraulic roller (107); The resistance welding external roller (2) is sleeved on the outer periphery of the bushing (12) to be processed and cooperates with the hydraulic rolling module (10) to complete the composite welding process; the resistance welding external roller (2) and the hydraulic rolling module (10) are electrically connected to a resistance welding power source (4); The bimetallic composite embedded bushing manufacturing method comprises the following steps: Step S1, fixing the bushing (12) to be processed, extending the hydraulic rolling module (10) of the rolling process device (1) into the inner side of the bushing (12) to be processed, so that the hydraulic roller (107) contacts the inner surface of the bushing (12) to be processed and generates pre-pressure; Step S2, when the pre-pressure reaches a preset threshold, the rotating motor (5) is started to drive the hydraulic rolling module (10) to rotate at a high speed, and a rough texture surface with a knurled texture is pre-processed on the inner surface of the bushing (12) to be processed; Step S3, placing the inner lining (11) into the bushing (12) to be processed, readjusting the position so that the bending ultrasonic vibration amplitude transformer (9) on the rolling process device (1) coincides with the center line of the bushing to be processed, extending the hydraulic rolling module (10) of the rolling process device (1) into the inner side of the bushing (12) to be processed, so that the hydraulic roller (107) contacts the inner surface of the bushing (12) to be processed and generates pre-pressure, and installing a resistance-welded external roller ring (2) on the outer periphery of the bushing (12) to be processed; Step S4, when the pre-pressure reaches a preset threshold, the resistance welding power source (4) is started, and a welding current is generated by the resistance between the resistance welding external roller ring (2) and the hydraulic roller (107), so that the lining (11) and the inner surface of the bushing (12) to be processed are tightly combined; an ultrasonic generator (7) is used to generate axial vibration on the high-speed rotating hydraulic roller (107), so that the lining (11) and the inner surface of the bushing (12) to be processed are completed by composite welding.

2. The method for manufacturing a bimetallic composite embedded bushing according to claim 1, characterized in that: The hydraulic roller (107) is detachably connected to the hydraulic roller support end cover (105).

3. The method for manufacturing a bimetallic composite embedded bushing according to claim 2, characterized in that: The hydraulic roller support end cover (105) has two ear plates protruding on one side away from the hydraulic cylinder body (101), and a hydraulic roller support core shaft (106) is detachably disposed between the two ear plates, and the hydraulic roller support core shaft (106) is rotatably connected to the hydraulic roller (107).

4. The method for manufacturing a bimetallic composite embedded bushing according to claim 3, characterized in that: The hydraulic rollers (107) include two types, one is a first hydraulic roller (107a) having a knurled roller surface, and the other is a second hydraulic roller (107b) having a smooth roller surface.

5. The method for manufacturing a bimetallic composite embedded bushing according to claim 1, characterized in that: Hydraulic roller support end cover limit blocks (104) fixedly connected to the circumference of the hydraulic cylinder body (101) are provided on both sides of the hydraulic roller support end cover (105); flanges protrude along the edges of the two hydraulic roller support end cover limit blocks (104) facing each other, and the two flanges limit the hydraulic roller support end cover (105) in its moving direction.

6. The method for manufacturing a bimetallic composite embedded bushing according to claim 1, characterized in that: The hydraulic cylinder body (101) is hollow inside to form a cavity, and an oil inlet (110) and an oil outlet (113) penetrating the cavity are provided on its outer peripheral surface.

7. The method for manufacturing a bimetallic composite embedded bushing according to claim 6, characterized in that: The end surface of the hydraulic cylinder body (101) is sealingly connected to a hydraulic cylinder body end cover (102), and an end shaft extends from the center of the hydraulic cylinder body end cover (102) toward the inside of the cavity of the hydraulic cylinder body (101).

8. The method for manufacturing a bimetallic composite embedded bushing according to claim 7, characterized in that: A return spring (109) corresponding to the hydraulic roller support end cover (105) is fixedly connected to the circumferential side of the end shaft, and the other end of the return spring (109) is fixedly connected to a piston rod (108). The piston rod (108) slides along the radial direction of the hydraulic cylinder body (101) on the circumferential side of the hydraulic cylinder body (101), and one end of the piston rod (108) away from the return spring (109) is fixedly connected to the hydraulic roller support end cover (105) via a piston rod bolt (115).

9. The method for manufacturing a bimetallic composite embedded bushing according to claim 1, characterized in that: In the steps S1 and S2, a hydraulic roller (107) with a knurled texture is used to pre-process the inner surface of the bushing (12) to be processed.

Images