Universal rolling tool bit and rolling tool capable of being used for surface mechanical rolling machining

Abstract

The invention discloses a universal rolling tool bit and a rolling tool which can be used for surface mechanical rolling machining. The universal rolling tool bit comprises a large ball, an end cover, a polytetrafluoroethylene gasket, a ball retainer, a small ball, a ball socket and a mounting piece. The invention further provides a rolling tool. The rolling tool comprises the universal rolling tool bit, an inner hexagon bolt and a double-lug type piston rod, wherein the universal rolling tool bit comprises a mounting piece with a fourth through hole formed in the side face of the mounting piece. The invention further provides another rolling tool. The rolling tool comprises a universal rolling tool bit and an internal thread type piston rod, wherein the bottom of the universal rolling tool bit is provided with a mounting piece with a third external thread. The split type design thought is adopted, the positions of parts are accurately controlled through different limiting steps and thread structures, and convenient and fast disassembly is achieved; quick-wear parts such as the end cover and the ball socket can be independently processed, so that the maintenance cost is reduced to a greater extent; the adjustable ball socket design effectively makes up the defect of insufficient machining precision, and the practicability and reliability of the device are further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical rolling processing of metal material surfaces, and in particular relates to a universal rolling cutter head and a rolling tool that can be used for mechanical rolling processing of surfaces. Background Art

[0002] Gradient nanostructured materials, through their unique gradient structural distribution, effectively reconcile the paradoxical inversion between strength and plasticity in traditional nanomaterials, significantly improving their plastic deformation capacity while maintaining the high strength characteristics of nanocrystalline materials. These materials are typically prepared through surface plastic deformation techniques, primarily including surface mechanical grinding, surface mechanical compaction, and surface mechanical rolling. Surface mechanical rolling involves pressing a carbide spherical indenter into the material surface and rolling it across the surface. This continuous rolling process induces severe plastic deformation in the surface layer, thereby forming a continuous gradient structure layer.

[0003] Universal ball joints (UTs) are bearings that can rotate freely in multiple directions. They are commonly used in applications requiring support or guidance for multiple degrees of freedom, such as logistics and transportation systems, rotary tables, and heavy equipment. Unlike traditional ball bearings, which primarily transmit loads in a single or specific direction, universal ball joints can typically slide or support objects in any direction on a horizontal surface. Universal ball joints typically consist of a main housing, supporting balls, small balls, and a cage.

[0004] Patent number CN202410792411.2 proposes an integrated turning and milling intelligent rolling tool. The patent describes a rolling tool head composed of a rolling ball and a rolling ball head. During use, the rolling ball head directly contacts the rolling balls in the cavity and the end cap. These rolling balls assist the rolling head in rolling in any direction. Lubricating oil enters the large spherical cavity through an oil guide hole, further assisting the rolling balls in rolling the tool head in any direction during the rolling process.

[0005] Patent number CN202311819479.7 proposes a processing device and method for a symmetrical gradient nanostructured flat plate. The patent proposes a rolling tool composed of a carbide ball, a blade, a first end cap, and a rolling support steel ball. The blade has a retaining hole in which the carbide ball is placed. The rolling support steel ball is located within the blade body. The retaining hole allows the steel ball to contact the carbide ball, allowing it to roll freely during processing while reducing friction.

[0006] The rolling head of the rolling device usually keeps rolling by cooperating with the rolling body inside it. When performing surface mechanical rolling processing on the sample, it is necessary to always keep the ball head of the rolling tool and the sample in rolling friction contact.

[0007] At present, some rolling devices use bearings such as deep groove ball bearings and thrust ball bearings as the rolling elements of the rolling tools. Although such bearings can bear great forces, they can only achieve rolling in a single plane, resulting in the inevitable sliding friction between the ball head of the rolling tool and the sample during the rolling process, which in turn affects the quality of the rolling process. In addition, some rolling devices use small balls as the rolling elements of the rolling tools. These allow the ball head to rotate freely in multiple directions and can adapt to the complex surface conditions of the sample. However, when the rolling pressure is high, the rolling of the small balls may become stuck, which in turn affects the rolling of the ball head, causing sliding friction between the ball head and the sample, affecting the quality of the rolling process. Summary of the Invention

[0008] The purpose of the present invention is to address the deficiencies of the prior art and to provide a universal rolling cutter head and a rolling tool that can be used for surface mechanical rolling processing.

[0009] The object of the present invention is achieved through the following technical solutions: A universal rolling cutter head that can be used for surface mechanical rolling processing, comprising: a large ball, an end cover, a polytetrafluoroethylene gasket, a ball cage, a small ball, a ball socket and a mounting member; The outer portion of the end cap is in an arc shape; the inner portion of the end cap is provided with a first stepped structure and a first internal thread; a small hole smaller than the diameter of the large ball is opened on the top of the end cap; a polytetrafluoroethylene gasket is installed on the first layer of the first stepped structure, and a second through hole is provided in the middle of the polytetrafluoroethylene gasket; The top of the mounting piece is provided with a second external thread, and the second external thread is used to connect with the first internal thread; the interior of the mounting piece has a second stepped structure, and the bottom of the second stepped structure is a curved structure, the bottom of the curved structure is provided with a first through hole, and the surface of the first through hole is provided with a second internal thread of a certain length; a ball retainer is installed on the first layer of the second stepped structure, and a third through hole is provided in the middle of the ball retainer; the large ball is located in the second through hole and the third through hole; the ball socket is divided into an upper half and an extension rod; the extension rod is provided with a first external thread; the first external thread is used to connect with the second internal thread to enable the ball socket to be inserted into the first through hole of the mounting piece; the length of the extension rod is less than the length of the second internal thread; the bottom of the extension rod is provided with a slotted screw hole; the gap between the lower surface of the upper half of the ball socket and the mounting piece is filled with small balls; the upper surface of the upper half of the ball socket is covered with small balls; the small balls on the upper surface of the upper half of the ball socket are in contact with the large balls.

[0010] Furthermore, the large ball and the small ball are both made of hard alloy tungsten carbide steel balls.

[0011] Furthermore, the end cover is provided with a cross section that cooperates with a wrench.

[0012] Furthermore, a fourth through hole is formed on the side surface of the mounting member.

[0013] Furthermore, a third external thread is formed on the bottom of the mounting piece.

[0014] The present invention also provides a rolling tool, comprising the universal rolling cutter head that can be used for surface mechanical rolling processing, a hexagon socket bolt and a double-ear piston rod; the two ends of the double-ear piston rod are respectively provided with ears, and each ear is provided with a threaded through hole; the hexagon socket bolt passes through the threaded through hole on one ear, the fourth through hole and the threaded through hole on the other ear in sequence and is fixedly connected; the bottom of the mounting piece contacts the top of the double-ear piston rod.

[0015] The present invention also provides a rolling tool, comprising the universal rolling cutter head that can be used for surface mechanical rolling processing and an internally threaded piston rod; the internally threaded piston rod is provided with a third internal thread; and the third external thread is connected to the third internal thread.

[0016] The beneficial effects of the present invention are: 1) The large ball can rotate freely within a 360-degree range, adapting to rapid changes in load and movement direction. The friction generated by the rolling ball is much smaller than sliding friction, reducing frictional resistance during processing, avoiding surface damage or scratches that may be caused by sliding friction, and obtaining better workpiece surface quality; allowing the large ball to move smoothly on workpieces with complex curved surfaces, suitable for surface processing of various geometric shapes; 2) The unique internal shape of the ball socket and mounting member, as well as the curved surface design on the top of the ball cage, allow the small balls to "flow" smoothly during processing, just like flowing water. This design effectively prevents the small balls from "getting stuck" and improves the stability and efficiency of the processing. 3) The ball socket extension rod is provided with a first external thread and a slotted screw hole to provide fine-tuning capability when the ball socket and the mounting assembly are not machined with sufficient precision. By inserting a miniature slotted screwdriver through the small hole at the bottom of the mounting assembly into the screwdriver blade at the bottom of the ball socket extension rod and rotating the screwdriver, the ball socket can be precisely adjusted up and down to achieve a suitable installation position, ensuring assembly precision and optimal performance. 4) The polytetrafluoroethylene gasket can prevent the large ball from coming into direct contact with the end cover due to the tangential force during the processing, thereby extending the service life of the large ball and the end cover; at the same time, the polytetrafluoroethylene gasket also has the functions of providing positioning, sealing and axial buffering; 5) The rolling tool adopts a split design concept, and the position of parts is precisely controlled through different limit steps and thread structures, which enables convenient disassembly; wearing parts such as end caps and ball sockets can be processed independently, greatly reducing maintenance costs; the adjustable ball socket design effectively compensates for the defect of insufficient processing accuracy, further improving the practicality and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a universal rolling cutter head that can be used for surface mechanical rolling processing in Example 1; Figure 2 Schematic diagram of the vertical cross-section of a universal rolling cutter head that can be used for surface mechanical rolling processing in Example 1; Figure 3 Schematic diagram of the vertical cross-section structure of the end cover in Example 1; Figure 4 Schematic diagram of the vertical cross-section structure of the ball retainer in Example 1; Figure 5 Schematic diagram of the structure of the ball socket in Example 1; Figure 6 Schematic diagram of the vertical cross-section structure of the ball socket in Example 1; Figure 7 Schematic diagram of the vertical cross-section structure of the mounting member in Example 2; Figure 8 Schematic diagram of the vertical cross-section structure of the double-ear piston rod in Example 3; Figure 9 Schematic diagram of the vertical cross-section structure of the rolling tool in Example 3; Figure 10 Schematic diagram of the structure of the rolling tool in Example 3; Figure 11 Schematic diagram of the installation of the rolling tool in the rolling device in Example 3; Figure 12 Schematic diagram of the vertical cross-section structure of the mounting member in Example 4; Figure 13 Schematic diagram of the vertical cross-section of a universal rolling cutter head that can be used for surface mechanical rolling processing in Example 4; Figure 14 Schematic diagram of the vertical cross-section structure of the internally threaded piston rod in Example 5; Figure 15 Schematic diagram of the structure of the rolling tool in Example 5; Figure 16 This is a side view of the vertical cross-section structure of the rolling tool in Example 5; In the figure, 1-large ball; 2-end cover; 3-PTFE gasket; 4-ball retainer; 5-small ball; 6-ball socket; 7-hexagon socket bolt; 8-mounting part; 21-first step structure 21; 22-first internal thread; 31-second through hole; 41-third through hole; 60-upper part; 61-extension rod; 62-first external thread; 63-slotted screw hole; 810-second external thread; 811-second step structure; 812-curved surface structure; 813-second internal thread; 814-fourth through hole; 815-first through hole; 825-third external thread; 91-double-ear piston rod; 911-threaded through hole; 92-inner thread piston rod; 921-third internal thread; 100-piston cylinder. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to illustrate the present invention, rather than to represent all embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0019] Example 1: Figure 1 and Figure 2 As shown, the present invention provides a universal rolling cutter head that can be used for surface mechanical rolling processing, including: a large ball 1, an end cover 2, a polytetrafluoroethylene gasket 3, a ball retainer 4, a small ball 5, a ball socket 6 and a mounting part 8.

[0020] like Figure 3 As shown, the exterior of the end cap 2 is in an arc shape, which can effectively enhance the lateral bearing capacity. The interior of the end cap 2 is provided with a first stepped structure 21 and a first internal thread 22; a small hole smaller than the diameter of the large ball 1 is opened on the top of the end cap 2 to prevent the large ball 1 from falling. The first stepped structure 21 is used to install a polytetrafluoroethylene gasket 3, and a polytetrafluoroethylene gasket 3 is installed on the first layer of the first stepped structure 21; the middle of the polytetrafluoroethylene gasket 3 is set as a second through hole 31; the first internal thread 22 is used to cooperate with the second external thread 810 of the mounting member 8 to achieve a detachable connection, improve loading and unloading efficiency, and allow the large ball 1 to be replaced frequently to ensure the quality of the rolling process.

[0021] The polytetrafluoroethylene gasket 3 is wrapped around the large ball 1. During the rolling process, the large ball 1 is affected by tangential forces and comes into direct contact with the end cap 2. The polytetrafluoroethylene gasket 3 provides a buffering effect, avoiding the "head-on collision" between the large ball 1 and the end cap 2. It can reduce the rolling friction between the large ball 1 and the test specimen during the rolling process, improve the rolling process quality, and also increase the service life of the end cap 2 and the large ball 1. At the same time, the polytetrafluoroethylene gasket 3 also plays a positioning role for the large ball 1. In addition, the polytetrafluoroethylene gasket 3 can also play a role in positioning, sealing, and axially buffering the large ball 1.

[0022] like Figure 7 As shown, the top of the mounting member 8 is provided with a second external thread 810, which is used to connect with the first internal thread 22. This facilitates assembly and disassembly, allowing for frequent replacement of the large ball 1, thereby ensuring the quality of the rolled specimen. The interior of the mounting member 8 comprises a second stepped structure 811. Below this second stepped structure 811 is a curved surface structure 812, with a first through-hole 815 defined at its bottom. A second internal thread 813 of a predetermined length is provided on the surface of this first through-hole 815. The first layer of the second stepped structure 811 is provided with a ball retainer 4, with a third through-hole 41 defined in the center. The large ball 1 is positioned within the second through-hole 31 and the third through-hole 41.

[0023] like Figure 5 and Figure 6 As shown, the ball socket 6 is divided into an upper part 60 and an extension rod 61; a first external thread 62 is provided on the extension rod 61. The first external thread 62 on the extension rod 61 of the ball socket 6 is used to connect with the second internal thread 813 at the bottom of the mounting member 8, so as to insert the ball socket 6 into the first through hole 815 of the mounting member 8; the length of the extension rod 61 is less than the length of the second internal thread 813. A slotted screw hole 63 is provided at the bottom of the extension rod 61. When assembling with the ball socket 6, a miniature slotted screwdriver can be inserted into the first through hole 815, and the upper and lower positions of the ball socket 6 can be fine-tuned by screwing the slotted screw hole 63 at the bottom of the extension rod 61, thereby avoiding the problem of too small an assembly gap between the ball socket 6 and the mounting member 8 due to processing accuracy issues. During installation, first, the first external thread 62 is connected to the second internal thread 813 by rotation, that is, the ball socket 6 is inserted into the first through hole 815 of the mounting part 8, and then the gap between the lower surface of the upper part 60 of the ball socket 6 and the mounting part 8 is filled with small balls 5. The size of the gap must ensure that the small balls 5 can roll freely inside, and then the upper surface of the upper part 60 of the ball socket 6 is covered with small balls 5. The small balls 5 on the upper surface of the upper part 60 of the ball socket 6 are in contact with the large balls 1. The size of the gap can be fine-tuned by using a micro flat-blade screwdriver to adjust the upper and lower positions of the ball socket 6.

[0024] In order to avoid processing errors in the ball socket 6 during the manufacturing process, which in turn affects the size of the gap and the rolling of the ball, a miniature flat-head screwdriver is inserted into the first through hole 815 at the bottom of the mounting member 8 and into the flat-head screw hole 63 that has been opened at the bottom of the extension rod 61 of the ball socket 6 for rotational fine-tuning to ensure that the small ball 5 on the upper surface of the upper half 60 of the ball socket 6 is in direct contact with the large ball 1. While lifting the large ball 1, the gap between the lower surface of the upper half 60 of the ball socket 6 and the mounting member 8 enables the small ball 5 to roll smoothly therein without being stuck.

[0025] like Figure 4 As shown, the ball retainer 4 has a third through-hole 41 in the center for contact between the large ball 1 and the small ball 5. The ball retainer 4 is placed in the first layer of the second stepped structure 811 of the mounting member 8. The large ball 1 is placed in the ball retainer 4 and contacts the small ball 5 placed in the ball socket 6. This point contact between the large ball and the ball results in less friction and increases the number of contact points, preventing excessive stress and structural damage at these points. A circular arc transition is used below the ball retainer 4 to ensure smooth rolling of the small ball 5, preventing the small ball from becoming stuck between the ball retainer 4 and the ball socket 2 during the rolling process, thereby preventing the large ball 1 from rolling. The gap between the ball retainer 4 and the mounting member 8 is filled with lubricating oil, which provides auxiliary lubrication for the rolling of the small ball 5. The unique internal shapes of the ball socket 6 and mounting member 8, along with the arc-shaped transition at the bottom of the ball retainer 4, allow the small balls 5 to "flow" between them like flowing water during machining, preventing the small balls 5 from becoming stuck and preventing the large balls 1 from rolling. The gap between the ball retainer 4 and mounting member 8 is filled with lubricant, which aids in the "flow" of the small balls.

[0026] The specific installation process of a universal rolling cutter head that can be used for surface mechanical rolling processing provided in Example 1 is as follows: The second internal thread 813 provided on the surface of the first through hole 815 is connected with the first external thread 62 provided on the extension rod 61 of the ball socket 6, and the ball socket 6 is inserted into the mounting member 8; the small balls 5 are filled in the gap between the lower surface of the upper half 60 of the ball socket 6 and the mounting member 8; the small balls 5 are spread on the upper surface of the upper half 60 of the ball socket 6; the ball retainer 4 is placed in the first layer of the second stepped structure 811 of the mounting member 8; and the large ball 1 is then placed and passed through the ball retainer. The third through hole 41 in the holder 4 contacts the small ball 5 on the upper surface of the upper part 60 of the socket 6; then the polytetrafluoroethylene gasket 3 is placed in the first layer of the first stepped structure 21 of the end cover 2; finally, the first internal thread 22 is connected to the second external thread 810, and the end cover 2 with the polytetrafluoroethylene gasket 3 is screwed into the mounting part 8, and the second through hole 31 in the polytetrafluoroethylene gasket 3 passes through the large ball 1, completing the installation of a universal rolling cutter head that can be used for surface mechanical rolling processing.

[0027] The large ball 1 and the small ball 5 are both made of hard alloy tungsten carbide steel balls. The hard alloy tungsten steel balls have high hardness, low friction coefficient, strong wear resistance, and good toughness, so they can effectively improve the processing quality and tool life.

[0028] The end cap 2 is provided with a cross section that fits with a wrench, which facilitates tightening the end cap 2 with a wrench when screwing it into the mounting member 8, thereby preventing the end cap 2 from falling off during the rolling process and causing injury to the operator. The embodiments of the present invention also provide two rolling tools, including the universal rolling cutter head mentioned above and a piston rod, which is slidably connected to the piston cylinder of the rolling device.

[0029] The first rolling tool utilizes the fourth through hole 814 on the side of the mounting member 8 to connect with the double-ear threaded hole on the top of the piston rod using a hexagon socket bolt.

[0030] The second rolling tool is connected to the internal thread at the top of the piston rod via the third external thread 825 at the bottom of the mounting member 8 .

[0031] Example 2: Figure 7 As shown, based on embodiment 1, a fourth through hole 814 is further opened on the side of the mounting member 8 .

[0032] Example 3: Figure 9 and Figure 10 As shown, the present invention further provides a rolling tool, comprising the universal rolling cutter head mentioned in Example 2 that can be used for surface mechanical rolling processing, as well as a hexagon socket bolt 7 and a double-ear piston rod 91.

[0033] The double-eared piston rod 91 can be installed in the piston cylinder 100 of the rolling device, such as Figure 11As shown, the rotation of the main shaft of the lathe drives the rolling sample to rotate, and the pressure output by the rolling device acts evenly on the bottom of the double-ear piston rod 91, thereby achieving contact between the large ball 1 and the rolling sample. When the rolling device runs at a uniform speed along the axis of the sample, the rolling process can be achieved.

[0034] like Figure 8 As shown, ears are provided at both ends of the double-ear piston rod 91, and each ear is provided with a threaded through hole 911; the hexagon socket bolt 7 passes through the threaded through hole on one ear, the fourth through hole 814 and the threaded through hole on the other ear in sequence and is fixedly connected; the bottom of the mounting member 8 contacts the top of the double-ear piston rod 91.

[0035] During installation, place the ear pieces at both ends of the double-ear piston rod on both sides of the mounting piece 8 respectively, align the threaded through hole 911 on the ear piece with the fourth through hole 814 on the side of the mounting piece 8, and then pass the hexagon socket bolt 7 through the threaded through hole on one ear piece, the fourth through hole and the threaded through hole on the other ear piece in sequence, and tighten it with a nut at the other end.

[0036] During rolling of specimens with significant axial undulation, the "double-ear" design of the double-ear piston rod 91 significantly resists the axial forces acting on the rolling tool head, thereby ensuring excellent surface quality. Furthermore, the contact between the bottom of the mounting member 8 and the top of the double-ear piston rod 91 effectively resists the tangential forces acting on the rolling tool head.

[0037] Example 4: Figure 12 and Figure 13 As shown, based on Example 1, a third external thread 825 is further provided on the bottom of the mounting member 8 .

[0038] Example 5: A rolling tool, comprising the universal rolling cutter head mentioned in Example 3 that can be used for surface mechanical rolling processing and an internally threaded piston rod 92.

[0039] like Figure 14 、 Figure 15 and Figure 16 As shown, the internal thread type piston rod 92 is provided with a third internal thread 921; it is connected to the third internal thread 921 through the third external thread 825, that is, the mounting member 8 and the internal thread type piston rod 92 are connected by a threaded connection. The specific process is to use the six-sided structure of the screw-type mounting member 812 and the side of the internal thread type piston rod 92, and use two external hexagonal wrenches to apply force in opposite directions to tighten it.

[0040] Example 5 is different from Example 3. The connection method used in Example 5 can effectively avoid the problem of overall assembly quality degradation due to processing errors of various parts, which in turn causes the problem of reduced rolling processing quality.

[0041] The internally threaded piston rod can also be installed in the piston cylinder of the rolling device. The pressure output by the rolling device acts evenly on the bottom of the internally threaded piston rod 92, thereby realizing the contact between the large ball 1 and the rolled sample. When the rolling device moves at a uniform speed driven by the servo motor, the rolling process on the sample surface can be completed.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A universal rolling cutter head for surface mechanical rolling processing, characterized in that: include: Large ball (1), end cover (2), polytetrafluoroethylene gasket (3), ball retainer (4), small ball (5), ball socket (6) and mounting member (8); The exterior of the end cap (2) is in an arc shape; the interior of the end cap (2) is provided with a first stepped structure (21) and a first internal thread (22); a small hole smaller than the diameter of the large ball (1) is opened on the top of the end cap (2); a polytetrafluoroethylene gasket (3) is installed on the first layer of the first stepped structure (21), and the middle of the polytetrafluoroethylene gasket (3) is provided with a second through hole (31); The top of the mounting member (8) is provided with a second external thread (810), and the second external thread (810) is used to connect with the first internal thread (22); the interior of the mounting member (8) has a second stepped structure (811), and the lower portion of the second stepped structure (811) is a curved surface structure (812), and the bottom portion of the curved surface structure (812) is provided with a first through hole (815), and the surface of the first through hole (815) is provided with a second internal thread (813) of a certain length; a ball retainer (4) is installed on the first layer of the second stepped structure (811), and a third through hole (41) is provided in the middle of the ball retainer (4); the large ball (1) is located in the second through hole (31) and the third through hole (41); the ball socket (6) is divided into The upper part (60) and the extension rod (61); the extension rod (61) is provided with a first external thread (62); the first external thread (62) is used to connect with the second internal thread (813) to insert the ball socket (6) into the first through hole (815) of the mounting member (8); the length of the extension rod (61) is less than the length of the second internal thread (813); the bottom of the extension rod (61) is provided with a slotted screw hole (63); the gap between the lower surface of the upper part (60) of the ball socket (6) and the mounting member (8) is filled with small balls (5); the upper surface of the upper part (60) of the ball socket (6) is covered with small balls (5); the small balls (5) on the upper surface of the upper part (60) of the ball socket (6) are in contact with the large balls (1).

2. The universal rolling cutter head for surface mechanical rolling processing according to claim 1, characterized in that: The large ball (1) and the small ball (5) are both made of hard alloy tungsten carbide steel balls.

3. The universal rolling cutter head for surface mechanical rolling processing according to claim 1, characterized in that: The end cover (2) is provided with a cross section that cooperates with a wrench.

4. The universal rolling cutter head for surface mechanical rolling processing according to claim 1, characterized in that: A fourth through hole (814) is also formed on the side of the mounting member (8).

5. The universal rolling cutter head for surface mechanical rolling processing according to claim 1, characterized in that: The bottom of the mounting member (8) is further provided with a third external thread (825).

6. A rolling tool, characterized in that: It comprises the universal rolling cutter head that can be used for surface mechanical rolling processing as described in claim 4, as well as a hexagon socket bolt (7) and a double-ear piston rod (91); the two ends of the double-ear piston rod (91) are respectively provided with ears, and each ear is provided with a threaded through hole (911); the hexagon socket bolt (7) passes through the threaded through hole on one ear, the fourth through hole (814) and the threaded through hole on the other ear in sequence and is fixedly connected; the bottom of the mounting member (8) contacts the top of the double-ear piston rod (91).

7. A rolling tool, characterized in that: It comprises the universal rolling cutter head for surface mechanical rolling processing as described in claim 5 and an internally threaded piston rod (92); the internally threaded piston rod (92) is provided with a third internal thread (921); and is connected to the third internal thread (921) via a third external thread (825).

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