Steel jacket part rolling device

Abstract

The utility model relates to the field of steel jacket part machining, and discloses a steel jacket part rolling device which comprises a machine base, a bearing base is fixedly mounted at the top of the machine base, and an annular machining shell is fixedly mounted at the top of the bearing base; a rolling mechanism is arranged on the annular machining shell and comprises three hydraulic cylinders, three U-shaped frames, three rolling shafts and three first motors, the three hydraulic cylinders are fixedly installed on the outer wall of the annular machining shell and annularly distributed at equal intervals, and the output shaft ends of the three hydraulic cylinders extend into the annular machining shell. The device has the following advantages and effects that the cylinder sleeve type part can be stably positioned, displacement cannot occur in the rolling process, it can be ensured that stress is uniform and machining consistency is high in the rolling process of the cylinder sleeve type part, local stress concentration of the cylinder sleeve type part is avoided, and therefore the machining precision and the surface quality of the cylinder sleeve type part are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of steel sleeve part machining, in particular to a steel sleeve part rolling device. BACKGROUND

[0002] Rolling processing is a chipless processing method, certain pressure is applied to the surface of a workpiece through a certain form of rolling tool, and the micro-unevenness of the surface of the workpiece is flattened at room temperature by using plastic deformation of the metal, so as to achieve the purpose of improving the surface roughness, changing the surface structure, mechanical properties, shape and size. At present, when steel sleeve parts are produced and manufactured, the surface of the steel sleeve part needs to be subjected to rolling processing.

[0003] In the related art, although the steel sleeve part rolling device can meet the basic needs of rolling processing, it is found in actual use that there are at least the following deficiencies: the clamping mode of the traditional steel sleeve part rolling device is mostly single-sided fixing or simple chuck fixing, which is easy to cause displacement or deformation of the steel sleeve part during rolling, and uneven stress of the cylinder sleeve part during rolling processing, affecting the processing precision and processing quality.

[0004] Therefore, we propose a steel sleeve part rolling device to solve the above problems. CONTENT OF THE INVENTION

[0005] The purpose of the application is to provide a steel sleeve part rolling device which can stably position the cylinder sleeve part, will not displace during rolling, can ensure uniform stress of the cylinder sleeve part during rolling, has high processing consistency, avoids local stress concentration of the cylinder sleeve part, and thus improves the processing precision and the surface quality of the cylinder sleeve part.

[0006] The above technical purpose of the application is achieved by the following technical scheme: a steel sleeve part rolling device, comprising a machine base, a bearing seat is fixedly installed on the top of the machine base, and a ring-shaped processing shell is fixedly installed on the top of the bearing seat; a rolling mechanism is arranged on the ring-shaped processing shell, the rolling mechanism comprises three hydraulic cylinders, three U-shaped frames, three rolling shafts and three motors one, the three hydraulic cylinders are fixedly installed on the outer wall of the ring-shaped processing shell and are distributed in an equidistant ring shape, the output shaft ends of the three hydraulic cylinders are extended into the ring-shaped processing shell, the three U-shaped frames are fixedly installed on the output shaft ends of the corresponding hydraulic cylinders, the three rolling shafts are rotatably installed on the corresponding U-shaped frames, the three motors one are fixedly installed on the right outer wall of the corresponding U-shaped frames, the output shaft ends of the three motors one are fixedly connected with one end of the corresponding rolling shafts, and the cylinder sleeve part is placed between the three rolling shafts; a clamping and rotating mechanism is arranged on the machine base, and the clamping and rotating mechanism is used for clamping and fixing the cylinder sleeve part and controlling the rotation of the cylinder sleeve part.

[0007] The further arrangement of the application is that the clamping rotating mechanism comprises a vertical beam 1, an electric push rod, a moving seat, a vertical beam 2, two sets of clamping fixing assemblies and a rotating driving assembly, the vertical beam 1 is fixedly installed on the top of the machine base and located at the right side of the annular machining shell, the electric push rod is fixedly installed on the left side of the bearing seat, the moving seat is fixedly installed on the output shaft end of the electric push rod, the vertical beam 2 is fixedly installed on the top of the moving seat, the two sets of clamping fixing assemblies are respectively arranged on the vertical beam 1 and the vertical beam 2, mounting holes are formed in the vertical beam 1 and the vertical beam 2, the two clamping fixing assemblies are used for clamping and fixing cylinder sleeve type parts, and the rotating driving assembly is used for controlling the rotation of the clamped and fixed cylinder sleeve type parts.

[0008] The further arrangement of the application is that the clamping fixing assembly comprises a horizontal shaft, a lead screw, a handle, a circular seat, three connecting arms 1, three connecting arms 2 and three abutting heads, the horizontal shaft penetrates through the mounting hole and rotates through the bearing, one end of the horizontal shaft extends into the cylinder sleeve type part, the other end of the horizontal shaft is located outside the annular machining shell, a threaded hole is formed in one end of the horizontal shaft, the lead screw is screwed into the threaded hole, the two ends of the lead screw extend out of the threaded hole, the handle is fixedly installed on one end of the lead screw, the circular seat is rotatably installed on the other end of the lead screw, three equidistantly annularly distributed grooves 1 are formed in the outer wall of the circular seat, one end of each of the three connecting arms 1 is rotatably installed in the corresponding groove 1 through a pin shaft, the three connecting arms 1 are all arranged in an inclined manner, three equidistantly annularly distributed grooves 2 are formed in the end of the horizontal shaft located in the cylinder sleeve type part, one end of each of the three connecting arms 2 is rotatably installed in the corresponding groove 2 through a pin shaft, the three connecting arms 2 are all arranged in an inclined manner, the other end of each of the three connecting arms 1 is rotatably connected with the corresponding connecting arm 2 through a pin shaft, and the three abutting heads are fixedly installed on the other end of each of the corresponding connecting arms 2, and the three abutting heads all abut against the inner wall of the cylinder sleeve type part.

[0009] The further arrangement of the application is that the outer surface of the side of the abutting head away from the connecting arm 2 is in an arc surface structure.

[0010] The further arrangement of the application is that the rotating driving assembly comprises a bracket, a second motor, a main gear and a secondary gear, the bracket is fixedly installed on the right side wall of the vertical beam 1, the second motor is fixedly installed on the bracket, the main gear is fixedly installed on the output shaft end of the second motor, the secondary gear is fixedly installed on the corresponding horizontal shaft, and the main gear is in mesh with the secondary gear.

[0011] The further arrangement of the application is that the three first motors are of the same type and have the same direction, and the direction of the second motor is the same as that of the first motor.

[0012] The further arrangement of the application is that the left side of the bearing seat is provided with a mounting groove, and the electric push rod is fixedly installed in the mounting groove through a pad seat.

[0013] The further arrangement of the application is that the top of the base is provided with a rectangular sliding groove on the left side of the bearing seat, the bottom of the moving seat is slidingly installed in the rectangular sliding groove, a horizontal guide plate is fixedly installed in the rectangular sliding groove, and the bottom of the moving seat is slidingly installed on the horizontal guide plate.

[0014] The application has at least one of the following beneficial technical effects:

[0015] 1、The application can realize the rolling work of the cylinder sleeve type part through the synergistic effect of the rolling mechanism and the clamping rotating mechanism, can stably position the cylinder sleeve type part, will not be displaced in the rolling process, can ensure that the cylinder sleeve type part is uniformly stressed in the rolling process, has high machining consistency, avoids local stress concentration of the cylinder sleeve type part, and thus improves machining precision and surface quality of the cylinder sleeve type part.

[0016] 2、The application can firmly and stably clamp and fix the cylinder sleeve type part from the inside of the cylinder sleeve type part through the common cooperation of the two sets of clamping fixing assemblies, realizes the effect of bidirectional self-centering clamping, ensures that the rotating axis of the cylinder sleeve type part is highly coincident with the axis of the rolling mechanism, greatly reduces machining eccentric error, can effectively prevent loosening or deviation of the cylinder sleeve type part in the machining process, further enhances the contact stability with the inner wall of the cylinder sleeve type part through the arc surface design of the abutting head, reduces stress concentration during clamping, and can control stable rotation of the clamped and fixed cylinder sleeve type part through the rotating drive assembly.

[0017] 3、The application can control synchronous rotation of the three rolling shafts through the same type and same direction setting of the three motors, can stably position the cylinder sleeve type part through the common effect of the equidistant annular distribution of the three rolling shafts, will not be displaced in the rolling process, applies uniform pressure to the outer surface of the cylinder sleeve type part, can make the rotating direction of the rolling shaft and the cylinder sleeve type part opposite through the same setting of the rotating direction of the motor two and the rotating direction of the motor one and the rotating direction during meshing transmission of the main gear and the auxiliary gear, can ensure coordination of relative movement between the rolling shaft and the cylinder sleeve type part in the rolling machining process, and realizes comprehensive and uniform rolling effect on the cylinder sleeve type part.

[0018] 4、The application can control horizontal linear movement of the moving seat through the telescopic feature of the electric push rod, and then make the vertical beam two and the clamping fixing assembly arranged thereon follow the movement, so as to facilitate the putting in and taking out of the cylinder sleeve type part. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a front view of the embodiment.

[0020] Figure 2 is a right view of the embodiment.

[0021] Figure 3 is a schematic view of the front view structure of the rolling mechanism.

[0022] Figure 4 is a schematic view of the left view structure of the cylinder sleeve type part removed in this embodiment.

[0023] Figure 5 is a schematic view of the right view structure of the cylinder sleeve type part removed in this embodiment.

[0024] Figure 6 is a schematic view of the front view structure of the cylinder sleeve type part removed in this embodiment.

[0025] Figure 7 is a schematic view of the front view structure of the clamping and fixing assembly.

[0026] In the figure, 1, base; 2, bearing seat; 3, annular machining shell; 4, hydraulic cylinder; 5, U-shaped frame; 6, rolling shaft; 7, motor I; 8, cylinder sleeve type part; 9, vertical beam I; 10, electric push rod; 11, moving seat; 12, vertical beam II; 13, clamping and fixing assembly; 131, horizontal shaft; 132, screw rod; 133, handle; 134, circular seat; 135, groove I; 136, connecting arm I; 137, groove II; 138, connecting arm II; 139, abutting head; 14, support; 15, motor II; 16, main gear; 17, auxiliary gear; 18, rectangular sliding groove; 19, horizontal guide plate. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Referring to Figures 1-7 , the present application provides a steel sleeve type part rolling device, comprising a base 1, a bearing seat 2 is fixedly installed on the top of the base 1, and an annular machining shell 3 is fixedly installed on the top of the bearing seat 2, wherein:

[0029] The rolling mechanism is arranged on the annular machining shell 3, and the rolling mechanism comprises three hydraulic cylinders 4, three U-shaped frames 5, three rolling shafts 6 and three motors one 7. The three hydraulic cylinders 4 are fixedly installed on the outer wall of the annular machining shell 3 and are distributed in an equidistant annular manner. The output shaft ends of the three hydraulic cylinders 4 all extend into the annular machining shell 3. The three U-shaped frames 5 are fixedly installed at the output shaft ends of the corresponding hydraulic cylinders 4. The three rolling shafts 6 are rotatably installed on the corresponding U-shaped frames 5. The three motors one 7 are fixedly installed on the right outer wall of the corresponding U-shaped frames 5. The output shaft ends of the three motors one 7 are fixedly connected with one end of the corresponding rolling shaft 6. The three motors one 7 are of the same type and are arranged in the same direction. The cylinder sleeve type part 8 is arranged between the three rolling shafts 6. The U-shaped frame 5 and the rolling shaft 6 can be linearly moved by the telescopic characteristics of the hydraulic cylinder 4. The rolling shaft 6 can be rotated by the motor one 7. Through the joint action of the three rolling shafts 6 distributed in an equidistant annular manner, combined with the same type and the same direction of the three motors one 7, the cylinder sleeve type part 8 can be stably positioned, and the cylinder sleeve type part 8 will not be displaced during the rolling process. The force of the cylinder sleeve type part 8 during the rolling process can be ensured to be uniform, the machining consistency is high, the local stress concentration of the cylinder sleeve type part 8 is avoided, and thus the machining precision and the surface quality of the cylinder sleeve type part 8 are improved.

[0030] In the embodiment, the clamping and rotating mechanism is arranged on the machine base 1, and is used for clamping and fixing the cylinder sleeve type part 8 and controlling the rotation of the cylinder sleeve type part 8.

[0031] The clamping rotating mechanism comprises vertical beam one 9, electric push rod 10, moving seat 11, vertical beam two 12, two sets of clamping fixing assemblies 13 and rotating driving assembly. The vertical beam one 9 is fixedly installed on the top of the machine base 1 and located at the right side of the annular machining shell 3. The electric push rod 10 is fixedly installed on the left side of the bearing seat 2. The moving seat 11 is fixedly installed on the output shaft end of the electric push rod 10. The vertical beam two 12 is fixedly installed on the top of the moving seat 11. The two sets of clamping fixing assemblies 13 are arranged on the vertical beam one 9 and the vertical beam two 12 respectively. The mounting holes are formed in the vertical beam one 9 and the vertical beam two 12. The two sets of clamping fixing assemblies 13 are used for clamping and fixing the cylinder sleeve type part 8. The rotating driving assembly is used for controlling the rotation of the clamped and fixed cylinder sleeve type part 8. The electric push rod 10 can be stretched and retracted. The moving seat 11 can be controlled to move horizontally and linearly. The vertical beam two 12 and the clamping fixing assembly 13 arranged thereon can move along with the moving seat 11, so that the cylinder sleeve type part 8 can be put in and taken out. The clamping fixing assembly 13 comprises horizontal shaft 131, screw rod 132, handle 133, circular seat 134, three connecting arms one 136, three connecting arms two 138 and three abutting heads 139. The horizontal shaft 131 is rotatably penetrated through the mounting hole through the bearing. One end of the horizontal shaft 131 extends into the cylinder sleeve type part 8. The other end of the horizontal shaft 131 is located outside the annular machining shell 3. Threaded holes are formed in one end of the horizontal shaft 131. The screw rod 132 is threadedly installed in the threaded hole. The two ends of the screw rod 132 extend out of the threaded hole. The handle 133 is fixedly installed on one end of the screw rod 132. The circular seat 134 is rotatably installed on the other end of the screw rod 132. Three equidistantly annularly distributed grooves one 135 are formed in the outer wall of the circular seat 134. One end of each of the three connecting arms one 136 is rotatably installed in the corresponding groove one 135 through the pin shaft. The three connecting arms one 136 are all arranged in an inclined manner. Three equidistantly annularly distributed grooves two 137 are formed in one end of the horizontal shaft 131 located in the cylinder sleeve type part 8. One end of each of the three connecting arms two 138 is rotatably installed in the corresponding groove two 137 through the pin shaft. The three connecting arms two 138 are all arranged in an inclined manner. The other end of each of the three connecting arms one 136 is rotatably connected with the corresponding connecting arm two 138 through the pin shaft. Each of the three abutting heads 139 is fixedly installed on the other end of the corresponding connecting arm two 138. Each of the three abutting heads 139 abuts against the inner wall of the cylinder sleeve type part 8. The handle 133 drives the screw rod 132 to rotate, so that the circular seat 134 can be driven to move. The circular seat 134 drives the connecting arms one 136 and the connecting arms two 138 to move during the movement of the circular seat 134, so that the abutting heads 139 can be tightly abutted against the inner wall of the cylinder sleeve type part 8, the clamping and fixing of the cylinder sleeve type part 8 from the inside of the cylinder sleeve type part 8 is realized, the loosening or deviation of the cylinder sleeve type part 8 during the machining process can be effectively prevented, the side outer surface of the abutting head 139 away from the connecting arm two 138 is arc-shaped surface structure, the arc-shaped surface design of the abutting head 139 further enhances the contact stability with the inner wall of the cylinder sleeve type part 8, reduces the stress concentration during clamping,The rotating driving assembly comprises a support 14, a second motor 15, a main gear 16 and a secondary gear 17, the support 14 is fixedly installed on the right side wall of the vertical beam 1, the second motor 15 is fixedly installed on the support 14, the main gear 16 is fixedly installed on the output shaft end of the second motor 15, the secondary gear 17 is fixedly sleeved on the corresponding horizontal shaft 131, the main gear 16 is engaged with the secondary gear 17, the rotation of the main gear 16 can be controlled by the second motor 15, the corresponding clamping and fixing assembly 13 can be controlled to rotate by the meshing transmission of the main gear 16 and the secondary gear 17, and then when the two clamping and fixing assemblies 13 are firmly clamped on the cylinder liner type part 8, the cylinder liner type part 8 clamped and fixed can be driven to rotate, the outer surface of the cylinder liner type part 8 can be fully and uniformly rolled and pressed, the rotation of the cylinder liner type part 8 is automatically controlled, manual intervention is reduced, the rolling and pressing precision is improved, the rotation direction of the second motor 15 is the same as that of the first motor 7, the rotation directions of the rolling shaft 6 and the cylinder liner type part 8 are opposite, the coordination of the rolling mechanism and the clamping and rotating mechanism during operation is ensured, and the rolling effect on the cylinder liner type part 8 is full and uniform.

[0032] In the embodiment, the left side of the bearing seat 2 is provided with a mounting groove, and the electric push rod 10 is fixedly installed in the mounting groove through the pad, thereby improving the stability and reliability of the electric push rod 10 and making the overall structure of the device compact and the layout reasonable.

[0033] In the embodiment, the top of the machine base 1 is provided with a rectangular sliding groove 18 located at the left side of the bearing seat 2, the bottom of the moving seat 11 is slidingly installed in the rectangular sliding groove 18, a horizontal guide plate 19 is fixedly installed in the rectangular sliding groove 18, and the bottom of the moving seat 11 is slidingly sleeved on the horizontal guide plate 19, thereby guiding the movement track of the moving seat 11 and providing a stable movement path for the moving seat 11.

[0034] In the embodiment, it should be noted that the first motor 7, the second motor 15, the hydraulic cylinder 4 and the electric push rod 10 can be purchased or customized in the market, the line connection mode and the control mode belong to mature technologies in the field, and are fully disclosed, so that the description is not repeated herein.

[0035] Through the above structure, the working principle of the steel liner type part rolling device is as follows:

[0036] Firstly, the electric push rod 10 is controlled to extend and operate, the electric push rod 10 pushes the moving seat 11, the vertical beam 2 and the clamping and fixing assembly 13 on the vertical beam 2 to move horizontally to the left, so that the clamping and fixing assembly 13 moves out of the annular machining housing 3 with a suitable interval, and then the operation of the electric push rod 10 is stopped,

[0037] Then, the cylinder liner type part 8 is put between the three rolling shafts 6 from the left side of the annular processing shell 3, and the three abutting heads 139 on the clamping and fixing assembly 13 on the right side are all located in the cylinder liner type part 8. By controlling the extension operation of the three hydraulic cylinders 4, the linear movement of the corresponding U-shaped frame 5 and the rolling shaft 6 can be controlled respectively, so that the three rolling shafts 6 move to contact the cylinder liner type part 8. After the rolling shaft 6 contacts the outer surface of the cylinder liner type part 8, the rolling shaft 6 is continuously pushed to apply a certain pressure to the cylinder liner type part 8. The extension operation of the three hydraulic cylinders 4 is stopped. At this time, the stable positioning of the cylinder liner type part 8 can be realized by the combined action of the three rolling shafts 6 which are equally spaced and annularly distributed, and the cylinder liner type part 8 will not be displaced in the subsequent rolling process;

[0038] Then, the electric push rod 10 is controlled to retract and reset. The electric push rod 10 pushes the moving seat 11, the vertical beam two 12 and the clamping and fixing assembly 13 on the vertical beam two 12 to move horizontally to the right, so that the clamping and fixing assembly 13 moves into the cylinder liner type part 8. The operation of the electric push rod 10 is stopped.

[0039] Then, the two handles 133 are rotated clockwise in turn. The handles 133 drive the corresponding lead screws 132 to rotate. The rotation of the lead screws 132 drives the circular seat 134 to move axially. The movement of the circular seat 134 is transmitted through the connecting arm one 136 and the connecting arm two 138, so that the three abutting heads 139 expand outward and tightly abut the inner wall of the cylinder liner type part 8. That is, the firm clamping and fixing of the cylinder liner type part 8 is completed.

[0040] After the firm clamping and fixing of the cylinder liner type part 8 is completed, the three electric motors one 7 are started to operate, and the electric motor two 15 is started to operate. At this time, the three electric motors one 7 drive the corresponding rolling shafts 6 to rotate, so that the three rolling shafts 6 rotate synchronously. The electric motor two 15 drives the main gear 16 to rotate. By using the meshing transmission action of the main gear 16 and the secondary gear 17, the rotation of the corresponding clamping and fixing assembly 13 can be controlled. That is, the clamped and fixed cylinder liner type part 8 can be rotated, so that the outer wall of the cylinder liner type part 8 can be rolled and processed. By setting the rotation direction of the electric motor two 15 to be the same as that of the electric motor one 7, and matching the rotation direction when the main gear 16 and the secondary gear 17 are meshed and transmitted, the rotation directions of the rolling shaft 6 and the cylinder liner type part 8 can be opposite. In the rolling process, the cylinder liner type part 8 can be stably positioned and will not be displaced. The relative movement between the rolling shaft 6 and the cylinder liner type part 8 can be coordinated, the stress on the cylinder liner type part 8 during the rolling process can be uniform, the processing consistency is high, local stress concentration of the cylinder liner type part 8 can be avoided, the precision of the rolling process and the surface quality of the cylinder liner type part 8 can be improved;

[0041] After the rolling processing is completed, the operation of the three motors one 7 and the motor two 15 is stopped, and then the two handles 133 are rotated counterclockwise in sequence, so that the lead screw 132 drives the circular seat 134 to retreat, the connecting arm one 136 and the connecting arm two 138 are retracted, the abutting head 139 is separated from the inner wall of the cylinder sleeve type part 8, that is, the clamping and fixing of the cylinder sleeve type part 8 is released, then the control electric push rod 10 is elongated to operate, so that the clamping and fixing assembly 13 on the vertical beam two 12 moves out of the annular processing shell 3 to a suitable distance, finally, the three hydraulic cylinders 4 are controlled to retract and reset, so that the three rolling shafts 6 are not in contact with the cylinder sleeve type part 8, that is, the cylinder sleeve type part 8 after rolling processing can be taken out, and according to the above operation steps, the next cylinder sleeve type part 8 can continue to be processed by rolling.

Claims

1. A rolling device for steel sleeve-type parts, characterized in that, Includes a base (1), on the top of the base (1) a bearing seat (2) is fixedly installed, and on the top of the bearing seat (2) a ring-shaped processing shell (3) is fixedly installed; The annular processing housing (3) is provided with a rolling mechanism, which includes three hydraulic cylinders (4), three U-shaped frames (5), three rolling shafts (6) and three motors (7). The three hydraulic cylinders (4) are all fixedly installed on the outer wall of the annular processing housing (3) and are distributed in a ring at equal intervals. The output shaft ends of the three hydraulic cylinders (4) extend into the annular processing housing (3). The three U-shaped frames (5) are respectively fixedly installed on the output shaft ends of the corresponding hydraulic cylinders (4). The three rolling shafts (6) are respectively rotatably installed on the corresponding U-shaped frames (5). The three motors (7) are respectively fixedly installed on the right outer wall of the corresponding U-shaped frames (5). The output shaft ends of the three motors (7) are respectively fixedly connected to one end of the corresponding rolling shaft (6). Cylinder sleeve parts (8) are placed between the three rolling shafts (6). A clamping and rotating mechanism is provided on the base (1). The clamping and rotating mechanism is used to clamp and fix the cylinder liner part (8) and control the rotation of the cylinder liner part (8).

2. The rolling device for steel sleeve parts according to claim 1, characterized in that: The clamping and rotating mechanism includes a first vertical beam (9), an electric push rod (10), a movable seat (11), a second vertical beam (12), two clamping and fixing assemblies (13), and a rotating drive assembly. The first vertical beam (9) is fixedly installed on the top of the machine base (1) and located on the right side of the annular machining shell (3). The electric push rod (10) is fixedly installed on the left side of the bearing seat (2). The movable seat (11) is fixedly installed on the output shaft end of the electric push rod (10). The second vertical beam (12) is fixedly installed on the top of the movable seat (11). The two sets of clamping and fixing assemblies (13) are respectively set on the first vertical beam (9) and the second vertical beam (12). Mounting holes are provided on both the first vertical beam (9) and the second vertical beam (12). Both clamping and fixing assemblies (13) are used to clamp and fix cylinder liner parts (8). The rotating drive assembly is used to control the rotation of the clamped and fixed cylinder liner parts (8).

3. The rolling device for steel sleeve parts according to claim 2, characterized in that: The clamping and fixing assembly (13) includes a horizontal shaft (131), a lead screw (132), a handle (133), a circular seat (134), three connecting arms (136), three connecting arms (138), and three contact heads (139). The horizontal shaft (131) rotates through the mounting hole via a bearing. One end of the horizontal shaft (131) extends into the cylinder liner part (8), and the other end of the horizontal shaft (131) is located outside the annular machining housing (3). A threaded hole is provided at one end of the horizontal shaft (131), and the lead screw (132) is threaded into the threaded hole. Both ends of the lead screw (132) extend outside the threaded hole. The handle (133) is fixedly installed at one end of the lead screw (132), and the circular seat (134) is rotatably installed at the other end of the lead screw (132). Three connecting arms (136), three connecting arms (138), and three contact heads (139) are provided on the outer wall of the circular seat (134). The three connecting arms (136) are rotatably mounted in the corresponding grooves (135) by means of pins. The three connecting arms (136) are all inclined. The horizontal shaft (131) is located in the cylinder liner part (8) and has three equally spaced annularly distributed grooves (137) at one end. The three connecting arms (138) are rotatably mounted in the corresponding grooves (137) by means of pins. The three connecting arms (138) are all inclined. The other end of the three connecting arms (136) is rotatably connected to the corresponding connecting arms (138) by means of pins. The three abutting heads (139) are fixedly mounted on the other end of the corresponding connecting arms (138) and all three abutting heads (139) abut against the inner wall of the cylinder liner part (8).

4. The rolling device for steel sleeve parts according to claim 3, characterized in that: The outer surface of the contact head (139) away from the connecting arm (138) has an arc-shaped structure.

5. The rolling device for steel sleeve parts according to claim 3, characterized in that: The rotary drive assembly includes a bracket (14), a second motor (15), a main gear (16), and a secondary gear (17). The bracket (14) is fixedly installed on the right side wall of the first vertical beam (9). The second motor (15) is fixedly installed on the bracket (14). The main gear (16) is fixedly installed on the output shaft end of the second motor (15). The secondary gear (17) is fixedly mounted on the corresponding horizontal shaft (131). The main gear (16) meshes with the secondary gear (17).

6. The rolling device for steel sleeve parts according to claim 5, characterized in that: The three motors (7) are of the same model and have the same rotation direction. The rotation direction of the second motor (15) is the same as that of the first motor (7).

7. The rolling device for steel sleeve parts according to claim 2, characterized in that: The support seat (2) has an installation groove on its left side, and the electric push rod (10) is fixedly installed in the installation groove by means of a pad.

8. The rolling device for steel sleeve parts according to claim 2, characterized in that: The top of the base (1) is provided with a rectangular slide groove (18) located on the left side of the support seat (2). The bottom of the movable seat (11) is slidably installed in the rectangular slide groove (18). A horizontal guide plate (19) is fixedly installed in the rectangular slide groove (18). The bottom of the movable seat (11) is slidably fitted on the horizontal guide plate (19).

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