Grinding tool for expanding tire core of numerical control horizontal grinding machine

Abstract

The invention discloses a grinding tool for an expander core of a numerical control horizontal grinding machine, and relates to the technical field of machining. The outer wall of the connecting device is fixedly connected with the outer wall of the connecting disc, the outer wall of the mounting device is in contact with the outer wall of the connecting device, and the inner wall of the mounting device is slidably connected with a core body; and the mounting device comprises a mounting assembly, the inner wall of the mounting assembly is slidably connected with the outer wall of the core body, the inner wall of the outer wall of the mounting assembly is slidably connected with a quick connecting assembly, and the device plays an important role in fixing the mounting assembly by arranging the quick connecting assembly. When the mounting component is disassembled and assembled, the auxiliary plate and the main plate can be in a closed or expanded state only by grasping and pulling the pull ring, so that the mounting component can be quickly assembled or disassembled, and the mounting component can be quickly replaced and the production flexibility and efficiency can be improved when tire expanding cores with different specifications need to be replaced.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a grinding tool for a tire expansion core of a numerically controlled horizontal grinder. Background Art

[0002] In the process of grinding tire expansion cores on CNC horizontal grinders, traditional grinding tools have many problems.

[0003] The installation components of traditional tooling can only adapt to tire expansion cores of specific sizes and have poor versatility. A variety of different tooling is required to process tire expansion cores of different specifications, which not only increases production costs, but also takes up a lot of storage space and management costs. For example, in some small processing companies, due to limited funds, they are unable to purchase a variety of tooling to meet the processing needs of tire expansion cores of different specifications, which restricts the development of the company. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention solves the technical problems by adopting the following technical solutions: a grinding tool for a tire expansion core of a CNC horizontal grinder, comprising: a connecting plate; a connecting device, the outer wall of which is fixedly connected to the outer wall of the connecting plate, and the connecting device is used to limit the position of the tire expansion core; an installation device, the outer wall of which is in contact with the outer wall of the connecting device, the installation device is used to install the tire expansion core, and the inner wall of which is slidably connected to the core body; the installation device comprises an installation component, the inner wall of which is slidably connected to the outer wall of the core body, and the installation component is used to An installation core body is obtained, and the inner wall of the outer wall of the installation assembly is slidably connected with a quick-connect assembly, and the quick-connect assembly is used to connect the core body and the connecting device; the quick-connect assembly includes a slide cylinder, the outer wall of the slide cylinder is threadedly connected with a threaded block, the outer wall of the threaded block is slidably connected with a swivel, the inner wall of the slide cylinder is slidably connected with a pull ring through a connecting plate, and the outer wall of the connecting plate is fixedly connected to the outer wall of the pull ring, the side of the connecting plate away from the pull ring is fixedly connected with a sliding sleeve, the outer wall of the sliding sleeve is rotatably connected with a sub-plate, the side of the sub-plate away from the sliding sleeve is rotatably connected with a main plate, and the main plate and the sub-plate are connected by a rotating shaft.

[0005] Preferably, the side of the main plate away from the sub-plate is rotatably connected to the inner wall of the slide cylinder through a fixed seat, and the outer wall of the fixed seat is fixedly connected to the inner wall of the slide cylinder, the inner wall of the slide cylinder is fixedly connected with a stopper, and the stopper is arranged in a circular array along the central axis of the slide cylinder, the inner wall of the slide cylinder is fixedly connected with a positioning column, and the outer wall of the connecting plate is slidably connected to the inner wall of the slide cylinder.

[0006] Preferably, the outer wall of the positioning column is slidably connected to the inner wall of the sliding sleeve, the outer wall of the sliding sleeve is fixedly connected with a tension spring, the side of the tension spring away from the sliding sleeve is fixedly connected to the inner wall of the sliding cylinder, the outer wall of the sub-plate is fixedly connected with an anti-sliding block, the material of the anti-sliding block is elastic material, and the anti-sliding block is linearly arrayed along the outer wall of the sub-plate, and the outer wall of the main board is in contact with the outer wall of the stop block.

[0007] Preferably, the mounting assembly includes a connecting flange, which is arranged in a circular array along the central axis of the connecting plate, the inner wall of the connecting flange is slidably connected to the outer wall of the core body through a mounting groove, and the mounting groove is opened in the wall of the connecting flange, a bolt groove is opened in the wall of the connecting flange, bolts are installed in the bolt groove, and the bolt groove is arranged in a circular array along the central axis of the connecting flange, the inner wall of the connecting flange is slidably connected to the outer wall of the slide cylinder, and the outer wall of the connecting flange is in contact with the outer wall of the swivel.

[0008] Preferably, the connecting device includes a supporting assembly, the outer wall of the supporting assembly is fixedly connected to the outer wall of the connecting disk, the supporting assembly is used to support the position of the mounting assembly, the outer wall of the supporting assembly is slidably connected to a limiting assembly, the limiting assembly is used to limit the position of the supporting assembly, the supporting assembly includes a supporting column, the supporting columns are arranged in a circular array along the central axis of the connecting disk, the outer wall of the supporting column is fixedly connected to a connecting ring, the outer wall of the supporting column is fixedly connected to a supporting rib, the support rib is used to fix the supporting column, and the outer wall of the supporting column is fixedly connected to a semicircular plate.

[0009] Preferably, the outer wall of the semicircular plate is fixedly connected to the outer wall of the support rib, the inner wall of the semicircular plate is slidably connected to the outer wall of the slide cylinder, the outer wall of the semicircular plate contacts the outer wall of the anti-sliding plate, a through groove is opened in the wall of the semicircular plate and corresponds to the outer wall of the slide cylinder, and the outer wall of the semicircular plate contacts the outer wall of the connecting flange.

[0010] Preferably, the limit assembly includes a turntable, the inner wall of the turntable is rotatably connected to a fixed column, the outer wall of the turntable is slidably connected to a slip ring through the limit column, and the outer wall of the limit column is fixedly connected to the outer wall of the slip ring, the outer wall of the turntable is fixedly connected to a clamping block, the material of the clamping block is elastic material, and the clamping block is arranged in a ring array along the central axis of the turntable, the outer wall of the fixed column is fixedly connected to the outer wall of the connecting disk, a thread groove is provided in the wall of the connecting disk, and the thread groove is arranged in a ring array along the central axis of the connecting disk, the outer wall of the limit column is slidably connected to the outer wall of the connecting disk, the outer wall of the clamping block is clamped with the outer wall of the slip ring, the outer wall of the turntable is fixedly connected to the outer wall of the support column, and the outer wall of the turntable is fixedly connected to the outer wall of the support rib.

[0011] The beneficial effects of the present invention are as follows: 1. The present invention plays an important role in fixing the installation component by setting a quick-connect component. When disassembling the installation component, you only need to grab the pull ring and pull it to make the sub-board and the main board in a closed or expanded state, so as to quickly install or disassemble the installation component. When it is necessary to replace the tire expansion core of different specifications, the installation component can be quickly replaced, thereby improving the flexibility and efficiency of production.

[0012] 2. The present invention can adjust the position of the slip ring by setting a limit assembly, thereby achieving precise adjustment and locking of the position of the support assembly, ensuring that the support assembly is in the best working position, and ensuring the stability of the entire connecting device during operation, which helps to improve the accuracy and consistency of the grinding process, so that each tire expansion core can be processed under the same conditions.

[0013] 3. The present invention can adapt to tire expansion cores of different sizes by setting a mounting assembly, in which the connecting flange is slidably connected to the outer wall of the core body through the mounting groove, and the bolt groove can be used to install bolts to further fix the core body to ensure that the core body will not move during the grinding process. For the processing requirements of tire expansion cores of different specifications, the tooling has strong adaptability, reduces the demand for different tooling, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the support assembly of the present invention; Figure 4 It is a structural schematic diagram of the limit assembly of the present invention; Figure 5 It is a structural schematic diagram of the quick-connect assembly of the present invention; Figure 6 It is a schematic diagram of the structure of A of the present invention; Figure 7 It is a structural schematic diagram of the installation assembly of the present invention.

[0015] In the figure: 1. connecting plate; 2. connecting device; 3. mounting device; 4. limiting assembly; 5. supporting assembly; 6. mounting assembly; 7. quick-connect assembly; 8. core; 51. semicircular plate; 52. supporting column; 53. supporting rib; 54. connecting ring; 41. turntable; 42. clamping block; 43. threaded groove; 44. fixing column; 45. sliding ring; 46. limiting column; 71. sliding cylinder; 72. threaded block; 73. rotating ring; 74. pulling ring; 75. connecting plate; 76. tension spring; 77. positioning column; 78. sliding sleeve; 79. main board; 710. stopper; 711. sub-board; 712. anti-sliding block; 61. connecting flange; 62. mounting groove; 63. bolt groove. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses. Example

[0017] like Figure 1 - Figure 7 As shown, the present invention provides a technical solution: a grinding tool for a tire expansion core of a CNC horizontal grinder, comprising: a connecting plate 1; a connecting device 2, the outer wall of the connecting device 2 is fixedly connected to the outer wall of the connecting plate 1, and the connecting device 2 is used to limit the position of the tire expansion core; an installation device 3, the outer wall of the installation device 3 is in contact with the outer wall of the connecting device 2, the installation device 3 is used to install the tire expansion core, and the inner wall of the installation device 3 is slidably connected with a core body 8; the installation device 3 includes a mounting assembly 6, the inner wall of the mounting assembly 6 is slidably connected to the outer wall of the core body 8, the mounting assembly 6 is used to install the core body 8, and the inner wall of the outer wall of the mounting assembly 6 is slidably connected with a quick-connect assembly 7, and the quick-connect assembly 7 is used to connect the core body 8 with the connecting device 2; the quick-connect assembly 7 includes a slide cylinder 71, the outer wall of the slide cylinder 71 is threadedly connected with a thread block 72, and the thread block 7 2 is slidably connected with a swivel 73, the inner wall of the slide 71 is slidably connected with a pull ring 74 through a connecting plate 75, and the outer wall of the connecting plate 75 is fixedly connected to the outer wall of the pull ring 74, the side of the connecting plate 75 away from the pull ring 74 is fixedly connected with a sliding sleeve 78, the outer wall of the sliding sleeve 78 is rotatably connected with a sub-plate 711, the side of the sub-plate 711 away from the sliding sleeve 78 is rotatably connected with a main board 79, the side of the main board 79 away from the sub-plate 711 is rotatably connected to the inner wall of the slide 71 through a fixed seat, the inner wall of the slide 71 is fixedly connected with a stopper 710, and the stopper 710 is arranged in a ring array along the central axis of the slide 71, the inner wall stopper 710 of the slide limits the position of the main board 79 to prevent excessive movement, the inner wall of the slide 71 is fixedly connected with a positioning column 77, and the outer wall of the connecting plate 75 is slidably connected to the inner wall of the slide 71.

[0018] The outer wall of the positioning column 77 is slidably connected to the inner wall of the sliding sleeve 78, and the outer wall of the sliding sleeve 78 is fixedly connected with a tension spring 76. The side of the tension spring 76 away from the sliding sleeve 78 is fixedly connected to the inner wall of the sliding cylinder 71. The outer wall of the auxiliary plate 711 is fixedly connected with an anti-sliding block 712, and the anti-sliding block 712 is linearly arranged along the outer wall of the auxiliary plate 711. The anti-sliding block 712 on the auxiliary plate 711 fits the semicircular plate 51 to increase friction and improve connection stability. The outer wall of the main board 79 contacts the outer wall of the stopper 710, and the installation assembly Component 6 includes a connecting flange 61, which is arranged in a circular array along the central axis of the connecting disk 1. The inner wall of the connecting flange 61 is slidably connected to the outer wall of the core 8 through a mounting groove 62, and the mounting groove 62 is opened in the wall of the connecting flange 61. Bolt grooves 63 are opened in the wall of the connecting flange 61, and the bolt grooves 63 are arranged in a circular array along the central axis of the connecting flange 61. The inner wall of the connecting flange 61 is slidably connected to the outer wall of the slide cylinder 71, and the outer wall of the connecting flange 61 is in contact with the outer wall of the swivel 73.

[0019] The connecting device 2 includes a support component 5, the outer wall of the support component 5 is fixedly connected to the outer wall of the connecting disk 1, the support component 5 is used to support the position of the installation component 6, the outer wall of the support component 5 is slidably connected to the limiting component 4, the limiting component 4 is used to limit the position of the support component 5, the support component 5 includes a support column 52, the support column 52 is arranged in a ring array along the central axis of the connecting disk 1, the outer wall of the support column 52 is fixedly connected with a connecting ring 54, the outer wall of the support column 52 is fixedly connected with a supporting rib 53, the outer wall of the support column 52 is fixedly connected with a semicircular plate 51, the outer wall of the semicircular plate 51 is fixedly connected to the outer wall of the supporting rib 53, the connecting ring 54 and the supporting rib 53 further enhance the structural stability, the inner wall of the semicircular plate 51 is slidably connected to the outer wall of the slide cylinder 71, the outer wall of the semicircular plate 51 contacts the outer wall of the anti-sliding block 712, and the outer wall of the semicircular plate 51 contacts the outer wall of the connecting flange 61.

[0020] The limiting assembly 4 includes a turntable 41, the inner wall of which is rotatably connected to a fixed column 44, the outer wall of the turntable 41 is slidably connected to a slip ring 45 through a limiting column 46, and the outer wall of the limiting column 46 is fixedly connected to the outer wall of the slip ring 45, the outer wall of the turntable 41 is fixedly connected to a clamping block 42, and the clamping block 42 is arranged in a ring array along the central axis of the turntable 41, the outer wall of the fixing column 44 is fixedly connected to the outer wall of the connecting disk 1, a thread groove 43 is provided in the wall of the connecting disk 1, and the thread groove 43 is arranged in a ring array along the central axis of the connecting disk 1, the outer wall of the limiting column 46 is slidably connected to the outer wall of the connecting disk 1, the outer wall of the clamping block 42 is clamped to the outer wall of the slip ring 45, the outer wall of the turntable 41 is fixedly connected to the outer wall of the support column 52, and the outer wall of the turntable 41 is fixedly connected to the outer wall of the support rib 53, and the position of the slip ring 45 can be adjusted through the sliding connection between the limiting column 46 and the slip ring 45 to ensure that the support assembly 5 is in the working position.

[0021] Working principle: The grinding tool is mainly composed of a connecting plate 1, a connecting device 2 and a mounting device 3. The connecting plate 1 serves as a basic structure to provide mounting and support for other components.

[0022] The connecting plate 1, which serves as the basic supporting structure of the entire tooling, provides a stable installation platform for other components. Before using the tooling, bolts need to be passed through the CNC horizontal grinder and screwed into the threaded groove 43 on the connecting plate 1 to fix the connecting plate 1 on the CNC horizontal grinder. The connecting device 2 plays a key role in limiting the position of the tire expansion core in the entire tooling. The connecting device 2 is divided into two parts: a supporting component 5 and a limiting component 4.

[0023] In the support assembly 5, multiple support columns 52 are distributed in a circular array along the central axis of the connecting disk 1, providing the main supporting force for the entire structure. The connecting ring 54 and the supporting ribs 53 further enhance the structural stability. The semicircular plate 51 is fixedly connected to the supporting ribs 53 and the support columns 52, and its inner wall is slidably connected to the outer wall of the slide cylinder 71 of the quick-connect assembly 7 in the installation device 3. When working, the support assembly 5 provides stable support for the installation device 3, withstands various forces generated during the grinding process, and ensures that the overall structure of the tooling is stable without deformation or shaking.

[0024] The limiting assembly 4 is mainly composed of a turntable 41, a fixed column 44, a block 42, a limiting column 46 and a slip ring 45. The turntable 41 is connected to the connecting disk 1 through the fixed column 44 to ensure the stable position of the turntable 41. The block 42 on the outer wall of the turntable 41 is clamped with the slip ring 45. The position of the slip ring 45 can be adjusted through the sliding connection between the limiting column 46 and the slip ring 45 to ensure that the support assembly 5 is in the working position and the stability of the entire connecting device 2 during the working process. In actual operation, after the tooling is installed on the CNC horizontal grinder, the position of the slip ring 45 can be adjusted according to specific processing requirements. When adjusting the position of the support assembly 5, the slip ring 45 is slid away from the turntable 41 so that the limiting column 46 on the slip ring 45 slides out of the groove on the turntable 41 to release the lock on the turntable 41, and then the position of the support assembly 5 is adjusted. After the position adjustment of the support assembly 5 is completed, the slip ring 45 is slid in the opposite direction so that the limiting column 46 slides back into the groove of the turntable 41 to re-lock the position of the turntable 41.

[0025] The mounting device 3 is the part that directly contacts with the tire expansion core and is installed and fixed. The mounting device 3 includes a mounting assembly 6 and a quick-connect assembly 7. The connecting flange 61 in the mounting assembly 6 is slidably connected with the outer wall of the core body 8 through the mounting groove 62. When installing the tire expansion core, the core body 8 is inserted into the mounting groove 62 to achieve preliminary positioning. The bolt groove 63 can be used to install bolts to further fix the core body 8 to ensure that the core body 8 will not be displaced during the grinding process.

[0026] The quick-connect assembly 7 plays an important role in fixing the mounting assembly 6. The outer wall of the slide cylinder 71 is threadedly connected to the threaded block 72, and the outer wall of the threaded block 72 is slidably connected to the swivel 73. When disassembling and assembling the mounting assembly 6, grab the pull ring 74 and pull it to drive the connecting plate 75 and the sliding sleeve 78 to move, so that the auxiliary plate 711 and the main plate 79 are in a closed state, that is, turn to the inside of the slide cylinder 71, and the mounting assembly 6 can be removed. When installing the mounting assembly 6 on the semicircular plate 51, the slide cylinder 71 is passed through the connecting flange 61 and the semicircular plate 51, and the tension of the pull ring 74 is released. The tension spring 76 releases the elastic potential energy to drive The sliding sleeve 78 slides away from the connecting plate 75, so that the auxiliary plate 711 and the main plate 79 are in an expanded state, that is, they are rotated out of the slide cylinder 71 and are folded. The inner wall block 710 of the slide cylinder 71 limits the position of the main plate 79 to prevent excessive movement. At this time, the anti-sliding block 712 on the auxiliary plate 711 fits the semicircular plate 51 to increase friction and improve the connection stability. Then the threaded block 72 is rotated to drive the swivel 73 to fit the connecting flange 61, and the semicircular plate 51 and the connecting flange 61 are squeezed by the auxiliary plate 711 and the swivel 73 to fix the connecting flange 61 on the semicircular plate 51.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A grinding tool for a tire expansion core of a CNC horizontal grinder, characterized in that: include: Connecting plate (1); A connecting device (2), the outer wall of the connecting device (2) being fixedly connected to the outer wall of the connecting plate (1), and the connecting device (2) being used to limit the position of the tire expansion core; An installation device (3), the outer wall of the installation device (3) being in contact with the outer wall of the connecting device (2), the installation device (3) being used to install a tire expansion core, and the inner wall of the installation device (3) being slidably connected to a core body (8); The mounting device (3) comprises a mounting assembly (6), the inner wall of the mounting assembly (6) being slidably connected to the outer wall of the core (8), the mounting assembly (6) being used to mount the core (8), the inner wall of the outer wall of the mounting assembly (6) being slidably connected to a quick-connect assembly (7), the quick-connect assembly (7) being used to connect the core (8) and the connecting device (2); The quick-connect assembly (7) comprises a slide cylinder (71), the outer wall of the slide cylinder (71) is threadedly connected to a threaded block (72), the outer wall of the threaded block (72) is slidably connected to a swivel (73), the inner wall of the slide cylinder (71) is slidably connected to a pull ring (74) via a connecting plate (75), and the outer wall of the connecting plate (75) is fixedly connected to the outer wall of the pull ring (74), a sliding sleeve (78) is fixedly connected to a side of the connecting plate (75) away from the pull ring (74), the outer wall of the sliding sleeve (78) is rotatably connected to a sub-plate (711), and the side of the sub-plate (711) away from the sliding sleeve (78) is rotatably connected to a main plate (79).

2. The grinding tool for the tire expansion core of a CNC horizontal grinder according to claim 1, characterized in that: The side of the main plate (79) away from the sub-plate (711) is rotatably connected to the inner wall of the slide cylinder (71) via a fixed seat, the inner wall of the slide cylinder (71) is fixedly connected to a stopper (710), and the stoppers (710) are arranged in a circular array along the central axis of the slide cylinder (71), the inner wall of the slide cylinder (71) is fixedly connected to a positioning column (77), and the outer wall of the connecting plate (75) is slidably connected to the inner wall of the slide cylinder (71).

3. The grinding tool for a tire expansion core of a CNC horizontal grinder according to claim 2, characterized in that: The outer wall of the positioning column (77) is slidably connected to the inner wall of the sliding sleeve (78), the outer wall of the sliding sleeve (78) is fixedly connected to a tension spring (76), the side of the tension spring (76) away from the sliding sleeve (78) is fixedly connected to the inner wall of the sliding cylinder (71), the outer wall of the auxiliary plate (711) is fixedly connected to an anti-sliding block (712), and the anti-sliding block (712) is arranged in a linear array along the outer wall of the auxiliary plate (711), and the outer wall of the main plate (79) is in contact with the outer wall of the stopper (710).

4. The grinding tool for a tire expansion core of a CNC horizontal grinder according to claim 3, characterized in that: The mounting assembly (6) comprises a connecting flange (61), wherein the connecting flange (61) is arranged in an annular array along the central axis of the connecting plate (1), the inner wall of the connecting flange (61) is slidably connected to the outer wall of the core (8) via a mounting groove (62), and the mounting groove (62) is provided in the wall of the connecting flange (61), a bolt groove (63) is provided in the wall of the connecting flange (61), and the bolt groove (63) is arranged in an annular array along the central axis of the connecting flange (61), the inner wall of the connecting flange (61) is slidably connected to the outer wall of the slide cylinder (71), and the outer wall of the connecting flange (61) is in contact with the outer wall of the swivel (73).

5. The grinding tool for a tire expansion core of a CNC horizontal grinder according to claim 1, characterized in that: The connecting device (2) comprises a supporting assembly (5), the outer wall of the supporting assembly (5) being fixedly connected to the outer wall of the connecting plate (1), the supporting assembly (5) being used to support the position of the mounting assembly (6), the outer wall of the supporting assembly (5) being slidably connected to a limiting assembly (4), the limiting assembly (4) being used to limit the position of the supporting assembly (5).

6. The grinding tool for the tire expansion core of a CNC horizontal grinder according to claim 5, characterized in that: The support assembly (5) comprises support columns (52), the support columns (52) being arranged in a ring array along the central axis of the connection disk (1), the outer walls of the support columns (52) being fixedly connected to a connection ring (54), the outer walls of the support columns (52) being fixedly connected to a support rib (53), and the outer walls of the support columns (52) being fixedly connected to a semicircular plate (51).

7. The grinding tool for a tire expansion core of a CNC horizontal grinder according to claim 6, characterized in that: The outer wall of the semicircular plate (51) is fixedly connected to the outer wall of the supporting rib (53), the inner wall of the semicircular plate (51) is slidably connected to the outer wall of the sliding cylinder (71), the outer wall of the semicircular plate (51) is in contact with the outer wall of the anti-sliding block (712), and the outer wall of the semicircular plate (51) is in contact with the outer wall of the connecting flange (61).

8. The grinding tool for a tire expansion core of a CNC horizontal grinder according to claim 5, characterized in that: The limit assembly (4) comprises a rotating disk (41), the inner wall of the rotating disk (41) being rotatably connected to a fixing column (44), the outer wall of the rotating disk (41) being slidably connected to a slip ring (45) via a limit column (46), and the outer wall of the limit column (46) being fixedly connected to the outer wall of the slip ring (45).

9. The grinding tool for the tire expansion core of a CNC horizontal grinder according to claim 8, characterized in that: The outer wall of the rotating disk (41) is fixedly connected to a clamping block (42), and the clamping blocks (42) are arranged in a circular array along the central axis of the rotating disk (41); the outer wall of the fixing column (44) is fixedly connected to the outer wall of the connecting disk (1); a thread groove (43) is provided in the wall of the connecting disk (1), and the thread groove (43) is arranged in a circular array along the central axis of the connecting disk (1); the outer wall of the limiting column (46) is slidably connected to the outer wall of the connecting disk (1); the outer wall of the clamping block (42) is clamped to the outer wall of the slip ring (45); the outer wall of the rotating disk (41) is fixedly connected to the outer wall of the supporting column (52); and the outer wall of the rotating disk (41) is fixedly connected to the outer wall of the supporting rib (53).

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