Cutting tool with replaceable blade and using method thereof

Abstract

The invention provides a blade-replaceable cutting tool and a using method thereof.The blade-replaceable cutting tool comprises a tool shaft, the outer side of the tool shaft is slidably sleeved with a blade body, limiting strips are arranged on the upper side and the lower side of the tool shaft, movable grooves are formed in the front side and the rear side of the tool shaft, a shear fork connecting rod is arranged on the inner side of the tool shaft, and movable frames are arranged at the left end and the right end of the shear fork connecting rod; a sliding block is arranged on the inner side of the moving frame, a bidirectional lead screw is arranged at the upper end of the inner side of the cutter shaft, a through groove is formed in the inner side of the moving groove, a moving rod is arranged on the inner side of the through groove, a limiting rod is arranged on the inner side of the moving groove, and adjusting bases are fixedly installed at the left end and the right end of the limiting rod. By arranging the linkage adjusting mechanism, overall, synchronous and equidistant rapid adjustment of the distance between the multiple blade bodies is achieved, the hydraulic push rod drives the adjusting base to drive the first adjusting block and the second adjusting block to be integrally retracted or reset, and axial constraint on the blade bodies can be automatically released when the blades are replaced; and the blade can be quickly disassembled and assembled without disassembling the limiting structure.

Description

Technical Field

[0001] This invention relates to the field of cutting tool technology, and in particular to a cutting tool with replaceable blades and its method of use. Background Technology

[0002] Cutting tools are tools used to cut and process workpieces, remove excess material, and obtain the desired shape, size, and surface quality. Among them, slitting machines are used to cut a substrate with a certain width into multiple narrow strips, and the cutting tools are the core components for slitting operations.

[0003] For example, patent number CN223289075U discloses a slitting tool and a slitting device. The slitting tool includes: a first cutting tool assembly, including a first cutting shaft, and a first adjusting sleeve, a second adjusting sleeve, and a first cutting blade arranged sequentially and abutting each other along the axial direction of the first cutting shaft. The first adjusting sleeve and the second adjusting sleeve abut each other through two spiral surfaces with opposite directions of rotation and that can fit together; a second cutting tool assembly, including a second cutting blade; the second adjusting sleeve can rotate relative to the first adjusting sleeve and, under the action of the first adjusting sleeve, drives the first cutting blade to move along the axial direction of the first cutting shaft to adjust the axial distance between the first cutting blade and the second cutting blade; For example, patent number CN218285816U discloses a blade sleeve assembly for a slitting tool and a slitting tool that facilitates adjustment of slitting specifications. It is used to adjust the spacing width between adjacent blades in a slitting tool. It includes a first blade sleeve and a second blade sleeve that can be sleeved on the mandrel of the slitting tool and supported between two adjacent blades. The first blade sleeve and the second blade sleeve are coaxially arranged and movably sleeved together by mutually compatible internal and external thread structures to form a blade sleeve assembly, so that the axial support width of the blade sleeve assembly can be adjusted by rotating the first blade sleeve or the second blade sleeve. Although existing cutting tools use adjustable spacers to adjust the spacing and clamp the blades, the adjustment process requires adjusting each spacer individually, making it difficult to achieve synchronous and rapid adjustment of the spacing between multiple blades. When replacing blades, each component needs to be disassembled one by one, which is cumbersome, time-consuming, and can easily affect assembly accuracy, resulting in low adjustment efficiency and poor positioning consistency.

[0004] Therefore, we have made improvements to this by proposing a cutting tool with replaceable blades and its usage method. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of existing cutting tools, which are difficult to adjust the spacing between multiple blades synchronously and quickly during the adjustment process. When changing blades, each component needs to be disassembled one by one, which is cumbersome, time-consuming, and easily affects the assembly accuracy, resulting in low adjustment efficiency and poor positioning consistency.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: A replaceable blade cutting tool and its method of use are disclosed to improve the above-mentioned problems.

[0007] The application is as follows: The device includes a cutter shaft, with a blade body slidably sleeved on the outer side of the cutter shaft. Limiting strips are provided on the upper and lower sides of the cutter shaft, and movable grooves are provided on the front and rear sides of the cutter shaft. A scissor lift connecting rod is provided on the inner side of the cutter shaft, with movable frames at both ends of the scissor lift connecting rod. A slider is provided inside the movable frames, and a two-way lead screw is provided at the upper end of the inner side of the cutter shaft. A through groove is provided inside the movable groove, and a moving rod is provided inside the through groove. A limiting rod is provided inside the movable groove, with adjusting seats fixedly installed at both ends of the limiting rod. A hydraulic push rod is provided on the side of the adjusting seat, and a splined shaft is provided above the limiting rod. A movable sleeve is slidably sleeved on the outer side of the splined shaft, with an adjusting block one on the outer side of the movable sleeve, and an adjusting block two on the side of the adjusting block one. A transmission thread is provided on the outer side of the movable sleeve.

[0008] As a preferred embodiment of the replaceable cutting tool and its usage method provided by the present invention, the blade body is in the form of a ring structure, and the inner ring of the blade body is provided with a limiting groove and a clearance groove, and the outer sides of the limiting groove and the limiting strip are adapted to each other.

[0009] As a preferred embodiment of the replaceable cutting tool and its usage method provided by the present invention, two movable frames are arranged symmetrically from left to right. The upper and lower ends of the movable frames are slidably connected to the inner side of the cutter shaft through a sliding groove. The bidirectional lead screw is threadedly connected to the movable frames. The left and right ends of the bidirectional lead screw are rotatably connected to the cutter shaft, and a first connecting end is fixedly installed on the outer side of the cutter shaft.

[0010] As a preferred embodiment of the replaceable blade cutting tool and its usage method provided by the present invention, a slide rod is fixedly installed on the inner side of the moving frame, the slider and the outer side of the slide rod are slidably connected, the front and rear sides of the slider are slidably attached to the inner side of the moving frame, two sliders are symmetrically arranged on the inner side of each moving frame, and are hinged to the side of the scissor fork connecting rod.

[0011] As a preferred embodiment of the replaceable blade cutting tool and its usage method provided by the present invention, the through groove is arranged to penetrate the blade shaft from the inside out. The moving rod and the inner side of the through groove are adapted to each other and are arranged at equal intervals. The adjusting block has a slot on the side near the blade shaft. One end of the moving rod is rotatably connected to the scissor fork connecting rod, and the other end is slidably connected to the inner side of the slot.

[0012] As a preferred embodiment of the replaceable cutting tool and its usage method provided by the present invention, one end of the hydraulic push rod is fixedly connected to the cutter shaft, the other end is fixedly connected to the adjusting seat, the left and right ends of the spline shaft are rotatably connected to the adjusting seat, and a second connecting end is fixedly installed on the outside of the adjusting seat.

[0013] As a preferred embodiment of the replaceable blade cutting tool and its usage method provided by the present invention, multiple adjustment blocks one are arranged side by side, and one adjustment block two is arranged on each side of the leftmost and rightmost adjustment blocks one, and two are symmetrically arranged on each side of the remaining adjustment blocks one that are not at the leftmost or rightmost ends. Both adjustment blocks one and adjustment blocks two are slidably sleeved on the outside of the limiting rod and slidably fitted with the inside of the movable groove. Adjustment block one is rotatably connected to the outside of the movable sleeve through a bearing.

[0014] As a preferred embodiment of the replaceable cutting tool and its usage method provided by the present invention, multiple movable sleeves are equally spaced on the outside of the spline shaft. A section of transmission thread is provided on the outer surface of the leftmost and rightmost movable sleeves, and two sections are symmetrically provided on the outer surface of the remaining movable sleeves that are not at the leftmost or rightmost ends. The second adjusting block is connected to the outer thread of the corresponding movable sleeve through the transmission thread.

[0015] A method for using a replaceable-blade cutting tool, comprising the aforementioned replaceable-blade cutting tool, is as follows: In use, multiple blade bodies slide and fit on the outside of the cutter shaft. The limiting groove of its inner ring cooperates with the limiting strips on the upper and lower sides of the cutter shaft to achieve circumferential positioning of the blade body. The adjusting block two fits tightly with the left and right sides of the blade body to achieve axial positioning of the blade body. When it is necessary to adjust the spacing between adjacent blade bodies, connect the first connecting end to a manual knob or drive motor to control the rotation of the bidirectional lead screw, which drives the two moving frames to move synchronously towards or away from each other along the slide groove on the inner side of the cutter shaft. This causes the scissor fork linkage to unfold or retract. The telescopic movement of the scissor fork linkage is transmitted through multiple moving rods, pushing the first adjusting block to slide synchronously and equally at intervals along the limit rod in the movable groove, thus achieving synchronous and rapid adjustment of the spacing between multiple adjusting blocks. The spline shaft and the moving sleeve are slidably connected to ensure that rotational motion can still be transmitted during axial movement. To match the change in the spacing of the first adjusting block, connect the second connecting end to a manual knob or drive motor to control the rotation of the spline shaft to drive the moving sleeve to rotate. The second adjusting block moves axially along the limit rod under the action of the transmission thread, thereby clamping and adapting the blade body, thus achieving synchronous adjustment and fixation of the spacing between multiple blade bodies. When the blade body needs to be replaced, the hydraulic push rod drives the adjusting seat and the limiting rod to move inward to the inside of the movable groove, so that adjusting block one and adjusting block two are retracted into the movable groove. At this time, adjusting block two is disengaged from the side wall of the blade body, making the groove larger than the outer contour of adjusting block one, so that the blade body can slide freely on the outside of the cutter shaft, which facilitates its disassembly and assembly. After the new blade body is fitted into place, the hydraulic push rod is driven in reverse to reset adjusting block one and adjusting block two, so as to quickly limit and fix multiple blade bodies.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves overall, synchronous, and equidistant rapid adjustment of the spacing between multiple blade bodies by setting up a linkage adjustment mechanism consisting of a bidirectional lead screw, a moving frame, a scissor fork connecting rod, and a moving rod, in conjunction with the synchronous sliding of the adjustment block on the limiting rod, thereby improving the efficiency and consistency of slitting specification adjustment.

[0017] This invention uses a hydraulic push rod to drive the adjusting seat, which in turn causes adjusting block one and adjusting block two to retract or reset as a whole. Combined with the clearance groove set on the blade body, the axial constraint on the blade body can be automatically released when the blade is replaced, allowing it to slide freely along the blade shaft. The blade can be quickly disassembled and installed without disassembling the limiting structure. After installation, the circumferential limiting can be automatically completed by resetting, which reduces maintenance difficulty and downtime. Attached Figure Description

[0018] Figure 1 The illustration shows a three-dimensional structure of the replaceable blade cutting tool of the present invention. Figure 1 ; Figure 2 The illustration shows a three-dimensional structure of the replaceable blade cutting tool of the present invention. Figure 2 ; Figure 3 The diagram shown is a three-dimensional structural schematic of the blade body of the present invention; Figure 4 The diagram shown is a three-dimensional cross-sectional view of the replaceable blade cutting tool of the present invention. Figure 1 ; Figure 5 The diagram shown is a three-dimensional cross-sectional view of the replaceable blade cutting tool of the present invention. Figure 2 ; Figure 6 The diagram shown is a three-dimensional structural representation of the movable sleeve, adjusting block one, and adjusting block two of the present invention. Figure 1 ; Figure 7 The diagram shown is a three-dimensional structural representation of the movable sleeve, adjusting block one, and adjusting block two of the present invention. Figure 2 .

[0019] The image shows: 1. Cutter shaft; 101. Slide groove; 2. Blade body; 201. Limiting groove; 202. Clearance groove; 3. Limiting strip; 4. Movable groove; 5. Scissor fork linkage; 6. Moving frame; 601. Slide rod; 7. Slider; 8. Two-way lead screw; 801. First connecting end; 9. Through groove; 10. Moving rod; 11. Limiting rod; 12. Adjusting seat; 13. Hydraulic push rod; 14. Splined shaft; 141. Second connecting end; 15. Moving sleeve; 16. Adjusting block one; 161. Slot; 17. Adjusting block two; 18. Transmission thread. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Example 1 Please refer to Figure 1-5 A replaceable blade cutting tool and its usage method include a cutter shaft 1, a blade body 2 slidably sleeved on the outer side of the cutter shaft 1, the blade body 2 having an annular structure, a limiting groove 201 and a clearance groove 202 formed on the inner ring of the blade body 2, the limiting groove 201 and the outer side of the limiting strip 3 being mutually adapted, limiting strips 3 being provided on the upper and lower sides of the cutter shaft 1, movable grooves 4 being provided on the front and rear sides of the cutter shaft 1, a scissor fork link 5 being provided on the inner side of the cutter shaft 1, and movable frames 6 being provided at the left and right ends of the scissor fork link 5. A slider 7 is provided on the inner side of the moving frame 6. A slide rod 601 is fixedly installed on the inner side of the moving frame 6. The slider 7 and the slide rod 601 are slidably sleeved on the outer side. The front and rear sides of the slider 7 are slidably fitted with the inner side of the moving frame 6. Two sliders 7 are symmetrically arranged on the inner side of each moving frame 6 and are hinged to the side of the scissor link 5. A two-way lead screw 8 is provided at the upper end of the inner side of the cutter shaft 1. Two moving frames 6 are symmetrically arranged on the left and right. The upper and lower ends of the moving frame 6 are slidably connected to the inner side of the cutter shaft 1 through a slide groove 101. The lead screw 8 and the movable frame 6 are threadedly connected. The left and right ends of the bidirectional lead screw 8 are rotatably connected to the cutter shaft 1, and the first connecting end 801 is fixedly installed on the outside of the cutter shaft 1. A through groove 9 is opened on the inner side of the movable groove 4. A movable rod 10 is provided on the inner side of the through groove 9. A limit rod 11 is provided on the inner side of the movable groove 4. Adjusting seats 12 are fixedly installed on the left and right ends of the limit rod 11. A hydraulic push rod 13 is provided on the side of the adjusting seat 12. A spline shaft 14 is provided above the limit rod 11. The outer side of the spline shaft 14 slides... The movable sleeve 15 is connected to the movable sleeve. An adjusting block 16 is provided on the outer side of the movable sleeve 15. An adjusting block 2 17 is provided on the side of the adjusting block 16. A transmission thread 18 is provided on the outer side of the movable sleeve 15. The through groove 9 is arranged to pass through the cutter shaft 1. The movable rod 10 and the inner side of the through groove 9 are adapted to each other and are arranged at equal intervals. A slot 161 is opened on the side of the adjusting block 16 near the cutter shaft 1. One end of the movable rod 10 is rotatably connected to the scissor fork connecting rod 5, and the other end is slidably connected to the inner side of the slot 161.

[0029] Implementation process: Multiple blade bodies 2 are slidably sleeved on the outside of the cutter shaft 1. The limiting groove 201 of its inner ring cooperates with the limiting strips 3 on the upper and lower sides of the cutter shaft 1 to achieve circumferential positioning of the blade body 2. The adjusting block 2 17 is tightly fitted with the left and right sides of the blade body 2 to achieve axial positioning of the blade body 2. When it is necessary to adjust the spacing between adjacent blade bodies 2, the first connecting end 801 is connected to a manual knob or drive motor to control the rotation of the bidirectional lead screw 8, which drives the two moving frames 6 to move synchronously towards or away from each other along the slide groove 101 on the inner side of the cutter shaft 1. This causes the scissor fork linkage 5 to unfold or retract. The telescopic movement of the scissor fork linkage 5 is transmitted through multiple moving rods 10, pushing the first adjusting block 16 to slide synchronously and equally at intervals along the limit rod 11 in the movable groove 4, thereby realizing the synchronous and rapid adjustment of the spacing between multiple adjusting blocks 16. The spline shaft 14 is slidably sleeved with the moving sleeve 15 to ensure that rotational movement can still be transmitted during axial movement. To match the change in the spacing of the first adjusting block 16, the second connecting end 141 is connected to a manual knob or drive motor to control the rotation of the spline shaft 14 to drive the moving sleeve 15 to rotate. The second adjusting block 17 moves axially along the limit rod 11 under the action of the transmission thread 18, thereby clamping and adapting the blade body 2, and realizing the synchronous adjustment and fixation of the spacing between multiple blade bodies 2.

[0030] Benefits of implementation: By setting up a linkage adjustment mechanism consisting of a two-way lead screw 8, a moving frame 6, a scissor fork linkage 5 and a moving rod 10, and cooperating with the synchronous sliding of the adjustment block 16 on the limit rod 11, the overall, synchronous, and equidistant rapid adjustment of the spacing between multiple blade bodies 2 is realized, which improves the efficiency and consistency of the slitting specification adjustment.

[0031] Example 2 One end of the hydraulic push rod 13 is fixedly connected to the cutter shaft 1, and the other end is fixedly connected to the adjusting seat 12. The left and right ends of the spline shaft 14 are rotatably connected to the adjusting seat 12, and a second connecting end 141 is fixedly installed on the outside of the adjusting seat 12. Multiple adjusting blocks 16 are arranged side by side. One adjusting block 17 is arranged on each side of the leftmost and rightmost adjusting blocks 16, and two are symmetrically arranged on each side of the remaining adjusting blocks 16 that are not at the leftmost or rightmost ends. Adjusting blocks 16 and adjusting blocks 17 17 are all slidably sleeved on the outside of the limiting rod 11 and slidably fit against the inside of the movable groove 4. Adjusting block 16 is rotatably connected to the outside of the movable sleeve 15 through a bearing. Multiple movable sleeves 15 are equally spaced on the outside of the spline shaft 14. The transmission thread 18 is provided on the outer surface of the leftmost and rightmost movable sleeves 15, and two sections are symmetrically provided on the outer surface of the other movable sleeves 15 that are not at the leftmost or rightmost ends. Adjusting block 2 17 is connected to the outer thread of the corresponding movable sleeve 15 through the transmission thread 18.

[0032] Implementation process: When the blade body 2 needs to be replaced, the hydraulic push rod 13 drives the adjusting seat 12 and the limiting rod 11 to move inward to the movable groove 4, so that the adjusting block 16 and the adjusting block 27 are housed inward to the movable groove 4. At this time, the adjusting block 27 is disengaged from the side wall of the blade body 2, so that the positioning groove 202 is larger than the outer contour of the adjusting block 16, allowing the blade body 2 to slide freely on the outside of the cutter shaft 1, which facilitates its disassembly and assembly. After the new blade body 2 is fitted into place, the hydraulic push rod 13 is reversed to drive the adjusting block 16 and the adjusting block 27 to reset, thereby achieving rapid limiting and fixing of multiple blade bodies 2.

[0033] Benefits of implementation: The hydraulic push rod 13 drives the adjusting seat 12 to move the adjusting block 16 and adjusting block 27 inward or reset as a whole. Combined with the relief groove 202 set on the blade body 2, the axial constraint on the blade body 2 can be automatically released when the blade is replaced, allowing it to slide freely along the blade shaft 1. The blade can be quickly disassembled and installed without disassembling the limiting structure. After installation, the circumferential limit can be automatically completed by resetting, which reduces the maintenance difficulty and downtime.

[0034] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A replaceable cutting blade cutting tool comprising a blade shaft (1), the outer side of the blade shaft (1) slidingly sleeving a blade body (2), characterized in that: Limiting strips (3) are provided on the upper and lower sides of the cutter shaft (1). Movable grooves (4) are provided on the front and rear sides of the cutter shaft (1). A scissor fork connecting rod (5) is provided on the inner side of the cutter shaft (1). Moving frames (6) are provided at the left and right ends of the scissor fork connecting rod (5). A slider (7) is provided on the inner side of the moving frame (6). A two-way lead screw (8) is provided at the upper end of the inner side of the cutter shaft (1). A through groove (9) is provided on the inner side of the movable groove (4). A moving rod (10) is provided on the inner side of the through groove (9). A moving rod (10) is provided on the inner side of the movable groove (4). A limit rod (11) is provided, and an adjustment seat (12) is fixedly installed at both ends of the limit rod (11). A hydraulic push rod (13) is provided on the side of the adjustment seat (12). A spline shaft (14) is provided above the limit rod (11). A movable sleeve (15) is slidably sleeved on the outside of the spline shaft (14). An adjustment block one (16) is provided on the outside of the movable sleeve (15). An adjustment block two (17) is provided on the side of the adjustment block one (16). A transmission thread (18) is provided on the outside of the movable sleeve (15).

2. A replaceable cutting insert according to Claim 1, characterized in that: The blade body (2) has a ring structure. The inner ring of the blade body (2) has a limiting groove (201) and a clearance groove (202). The outer sides of the limiting groove (201) and the limiting strip (3) are adapted to each other.

3. A replaceable cutting insert according to Claim 2, characterized in that: There are two movable frames (6) arranged symmetrically on the left and right. The upper and lower ends of the movable frames (6) and the inner side of the cutter shaft (1) are slidably connected by the slide groove (101). The double-acting screw (8) is threadedly connected to the movable frames (6). The left and right ends of the double-acting screw (8) are rotatably connected to the cutter shaft (1), and the first connecting end (801) is fixedly installed on the outer side of the cutter shaft (1).

4. A cutting tool with replaceable blades according to claim 3, characterized in that: A sliding rod (601) is fixedly installed on the inner side of the movable frame (6). The slider (7) and the outer side of the sliding rod (601) are slidably connected. The front and rear sides of the slider (7) are slidably attached to the inner side of the movable frame (6). There are two sliders (7) located on the inner side of each movable frame (6) in a symmetrical arrangement, and they are hinged to the side of the scissor link (5).

5. A cutting tool with replaceable blades according to claim 4, characterized in that: The through slot (9) is arranged to pass through the cutter shaft (1) from the inside and outside. The moving rod (10) and the inner side of the through slot (9) are adapted to each other and are arranged at equal intervals. The adjusting block (16) has a slot (161) on the side near the cutter shaft (1). One end of the moving rod (10) is rotatably connected to the scissor fork connecting rod (5), and the other end is slidably connected to the inner side of the slot (161).

6. A cutting tool with replaceable blades according to claim 5, characterized in that: One end of the hydraulic push rod (13) is fixedly connected to the cutter shaft (1), and the other end is fixedly connected to the adjusting seat (12). The left and right ends of the spline shaft (14) are rotatably connected to the adjusting seat (12), and a second connecting end (141) is fixedly installed on the outside of the adjusting seat (12).

7. A cutting tool with replaceable blades according to claim 6, characterized in that: Multiple adjustment blocks (16) are arranged side by side on the left and right. One adjustment block (17) is arranged on the leftmost and rightmost sides of adjustment block (16). Two adjustment blocks (17) are arranged symmetrically on the sides of the remaining adjustment blocks (16) that are not at the leftmost or rightmost ends. Both adjustment blocks (16) and adjustment blocks (17) are slidably sleeved on the outside of the limiting rod (11) and slidably fitted with the inside of the movable groove (4). Adjustment block (16) is rotatably connected to the outside of the movable sleeve (15) through a bearing.

8. A cutting tool with replaceable blades according to claim 7, characterized in that: Multiple movable sleeves (15) are evenly spaced on the outside of the spline shaft (14). A section of transmission thread (18) is provided on the outer surface of the leftmost and rightmost movable sleeves (15), and two sections are symmetrically provided on the outer surface of the remaining movable sleeves (15) that are not at the leftmost or rightmost ends. The second adjusting block (17) is connected to the outer thread of the corresponding movable sleeve (15) through the transmission thread (18).

9. A method of using a cutting tool with replaceable blades, characterized in that: The cutting tool, including the blade replaceable type as described in any one of claims 1-8, operates as follows: When in use, multiple blade bodies (2) are slidably sleeved on the outside of the cutter shaft (1). The limiting groove (201) of its inner ring cooperates with the limiting strips (3) on the upper and lower sides of the cutter shaft (1) to achieve circumferential positioning of the blade body (2). The adjusting block 2 (17) is tightly fitted with the left and right sides of the blade body (2) to achieve axial positioning of the blade body (2). When it is necessary to adjust the spacing between adjacent blade bodies (2), connect the first connecting end (801) to a manual knob or drive motor to control the rotation of the bidirectional lead screw (8), which drives the two moving frames (6) to move synchronously towards or away from each other along the slide groove (101) inside the cutter shaft (1), thereby driving the scissor link (5) to unfold or retract. The extension and retraction of the scissor link (5) is transmitted through multiple moving rods (10), pushing the first adjusting block (16) to slide synchronously and equally at intervals along the limiting rod (11) in the movable groove (4), thereby realizing the spacing of multiple first adjusting blocks (16). Synchronous and rapid adjustment, the spline shaft (14) and the moving sleeve (15) are slidably connected to ensure that rotational motion can still be transmitted during axial movement. In order to match the change of the spacing of the first adjusting block (16), the second connecting end (141) is connected to a manual knob or a drive motor to control the spline shaft (14) to rotate and drive the moving sleeve (15) to rotate. The second adjusting block (17) moves axially along the limit rod (11) under the action of the transmission thread (18), thereby clamping and adapting the blade body (2) to achieve synchronous adjustment and fixation of the spacing of multiple blade bodies (2). When the blade body (2) needs to be replaced, the hydraulic push rod (13) drives the adjusting seat (12) and the limiting rod (11) to move into the inner side of the movable groove (4), so that the adjusting block one (16) and the adjusting block two (17) are stored in the inner side of the movable groove (4). At this time, the adjusting block two (17) is separated from the side wall of the blade body (2), so that the positioning groove (202) is larger than the outer contour of the adjusting block one (16), so that the blade body (2) can slide freely on the outside of the cutter shaft (1), which is convenient for its disassembly and assembly. After the new blade body (2) is fitted into place, the hydraulic push rod (13) is driven in reverse to drive the adjusting block one (16) and the adjusting block two (17) to reset, so as to realize the quick limiting and fixing of multiple blade bodies (2).

Images