Knife rest device and equipment for removing burrs in high-frequency welding seam

By setting a sliding connection and mounting part in the tool holder device, it ensures that the blade particles move with the second tool holder base, which solves the problem of position change caused by loosening of the blade, and improves the accuracy and effect of burr removal in the weld.

CN222344384UActive Publication Date: 2025-01-14BYD CO LTD
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Patent Information

Application Number
CN202421145965.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-23
Publication Date
2025-01-14
Estimated Expiration
2034-05-23

AI Technical Summary

Technical Problem

In the tool holder device, the blade particles are prone to loosening when adjusting their position, resulting in a change in position relative to the tool holder base and affecting the removal effect of burrs in the weld.

Method used

A tool holder device is designed, wherein the second tool holder base is slidably connected to the first tool holder base in the first direction, and an installation part is provided at its end, and the blade particles are detachably connected to the installation part, and the blade particles are realized through a fine-tuning mechanism. The precise position adjustment ensures that the blade particles move with the second tool holder substrate without being connected to the first tool holder substrate.

Benefits of technology

The relative position of the blade is maintained when adjusting the position, ensuring the accuracy and effect of removing burrs in the weld, and avoiding interference with the removal effect of position changes.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a tool rest device and high-frequency welding seam inner burr removing equipment. The tool rest device comprises a first tool rest base body, a second tool rest base body and tool grains. The second tool rest base body is connected to the first tool rest base body in a sliding mode in the first direction, a first locking piece capable of locking the second tool rest base body is arranged on the first tool rest base body, and the second tool rest base body is provided with a first end and a second end which are oppositely arranged in the first direction. The first end of the second tool rest base body is arranged to be capable of protruding out of the first tool rest base body in a sliding mode, a mounting part is arranged at the first end of the second tool rest base body, the tool grains are detachably connected to the mounting part, and in the first direction, the tool grains protrude out of the first tool rest base body and the second tool rest base body. The cutter grains of the cutter rest device directly move along with the movement of the second cutter rest base body and are not connected with the first cutter rest base body, the positions of the cutter grains in other directions cannot be changed, the accuracy of removing burrs in a welding seam by the cutter grains is guaranteed, and the removing effect of the burrs in the welding seam is guaranteed.
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Description

Technical Field

[0001] This disclosure relates to the field of machining technology, specifically to a tool holder device and a burr removal device for high-frequency weld seams. Background Technology

[0002] In the related technology's tool holder device, the cutting blade is clamped and fixed by two tool holder bases. When one of the tool holder bases needs to be adjusted, the cutting blade will become loose, causing the position of the cutting blade relative to the two tool holder bases to change, affecting the removal effect of internal burrs. Utility Model Content

[0003] The purpose of this disclosure is to provide a tool holder device and a burr removal device for high-frequency weld seams, which solves the problems in related technologies.

[0004] To achieve the above objectives, one aspect of this disclosure provides a tool holder device, including a first tool holder base, a second tool holder base, and a cutting tool;

[0005] The second tool holder base is slidably connected to the first tool holder base along a first direction. The first tool holder base is provided with a first locking member capable of locking the second tool holder base. The second tool holder base has a first end and a second end disposed opposite to each other in the first direction. The first end of the second tool holder base is configured to slidably protrude from the first tool holder base. The first end of the second tool holder base is provided with a mounting part. The cutting blade is detachably connected to the mounting part. In the first direction, the cutting blade protrudes from the first tool holder base and the second tool holder base.

[0006] Optionally, the mounting part is configured as a mounting groove, the blade is connected to the mounting groove, the blade tip of the blade protrudes from the opening of the mounting groove, and the mounting groove is provided with a second locking member capable of locking the blade.

[0007] Optionally, the second locking member is constructed as a screw, and a through screw hole is provided on one side wall of the mounting groove. The second locking member is threaded into the through screw hole, and the second locking member is located at one end of the mounting groove and can abut against the side wall of the blade.

[0008] Optionally, the tool holder device further includes a fine-tuning mechanism, which is connected to the first tool holder base and the adjusting end of the fine-tuning mechanism is connected to the second tool holder base. The fine-tuning mechanism is configured to drive the second tool holder base and the cutting blade to move back and forth along a first direction.

[0009] Optionally, the fine-tuning mechanism includes a fine-tuning screw, and the second end of the second tool holder base is provided with a fine-tuning screw hole extending in the first direction, and the fine-tuning screw is threadedly connected to the fine-tuning screw hole.

[0010] Optionally, the fine-tuning mechanism further includes a mounting block connected to the first tool holder base. The mounting block is disposed opposite to the second end of the second tool holder base. The fine-tuning screw is rotatably connected to the mounting block. The mounting block is provided with a limiting part, which is configured to restrict the fine-tuning screw from being fixed relative to the first tool holder base.

[0011] Optionally, the fine-tuning screw includes a threaded post, a rotating operating part, a connecting rod, and a limiting mating part. One end of the threaded post is connected to the rotating operating part, and the other end of the threaded post is threaded to the fine-tuning screw hole. The rotating operating part has multiple operating holes on its side, and the two ends of the connecting rod are respectively connected to the rotating operating part and the limiting mating part.

[0012] The limiting part is constructed as a limiting groove, and the opening of the limiting groove forms a limiting protrusion. A part of the connecting rod and the limiting mating part extend into the limiting groove. The cooperation between the limiting protrusion and the limiting mating part restricts the limiting mating part to be located within the limiting groove.

[0013] Optionally, one side wall of the limiting groove is constructed as an open structure, a connecting slider is provided on the mounting block, a connecting groove is provided on the first tool holder base, and the connecting slider is slidably connected to the connecting groove.

[0014] Optionally, the first tool holder base is provided with a guide groove extending in a first direction, and the second tool holder base is provided with a guide slider extending in the first direction. The guide slider is slidably connected to the guide groove, and the cooperation between the guide slider and the guide groove can restrict the movement of the second tool holder base in the first direction.

[0015] Optionally, the number of guide grooves and the number of guide sliders are both two and are arranged opposite to each other in the second direction. The guide grooves are constructed as dovetail grooves and the guide sliders are constructed as dovetail sliders.

[0016] Wherein, the first direction and the second direction are perpendicular to each other.

[0017] A second aspect of this disclosure also provides a burr removal device for high-frequency welds, including the aforementioned tool holder device.

[0018] The above technical solution, through the mounting part provided on the second tool holder base, allows the cutting blade to be connected to the second tool holder base through the mounting part. The cutting blade moves directly with the movement of the second tool holder base and is not connected to the first tool holder base. Therefore, when the second tool holder base needs to be adjusted, the cutting blade still maintains its position relative to the second tool holder base. This achieves a change in the position of the cutting blade in the first direction without any change in position in other directions, ensuring the accuracy of the cutting blade in removing burrs inside the weld and ensuring the removal effect of internal burrs.

[0019] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a perspective view of a tool holder device according to one embodiment of the present disclosure;

[0022] Figure 2 This is an exploded schematic diagram of a tool holder device according to one embodiment of the present disclosure;

[0023] Figure 3 This is a cross-sectional view of one side of a tool holder device according to one embodiment of the present disclosure;

[0024] Figure 4 This is one embodiment of the present disclosure. Figure 3 Enlarged structural diagram of position A in the middle;

[0025] Figure 5 This is a perspective view of the second tool holder base according to one embodiment of the present disclosure;

[0026] Figure 6 This is a perspective view of a fine-tuning screw according to one embodiment of the present disclosure;

[0027] Figure 7 This is a perspective view of an installation block according to one embodiment of the present disclosure.

[0028] Explanation of reference numerals in the attached figures

[0029] 1. First tool holder base; 11. Connecting slide groove; 12. Guide groove; 2. Second tool holder base; 21. Guide slider; 3. Tool insert; 4. Mounting part; 5. Through screw hole; 6. Fine adjustment mechanism; 61. Fine adjustment screw; 611. Threaded post; 612. Rotary operating part; 613. Connecting rod; 614. Limiting mating part; 615. Operating hole; 62. Mounting block; 621. Limiting part; 622. Connecting slider; 7. Fine adjustment screw hole. Detailed Implementation

[0030] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0031] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" are generally used to define the orientation of the accompanying drawings, and "inner" and "outer" refer to the inner and outer parts of the relevant components. Furthermore, terms such as "first" and "second" are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0033] High-frequency welding offers advantages in aluminum shell manufacturing, including higher efficiency and lower cost. Therefore, it is increasingly being used to replace laser-welded aluminum shells. However, high-frequency welds are rougher than laser welds, requiring the removal of internal burrs. Currently, internal burr removal equipment, also known as an internal burr remover, is commonly used. This equipment features a tool holder mounted at the front of the cutter bar, which removes the internal burrs from the weld.

[0034] In the related technology's tool holder device, the cutting blade is clamped and fixed by two tool holder bases. Since the position between the cutting blade and the weld seam may be adjusted, this is usually achieved by adjusting one of the tool holder bases. However, when one of the tool holder bases needs to be adjusted, the cutting blade may become loose, causing the position of the cutting blade relative to the two tool holder bases to change. This interferes with the accuracy of internal burr removal and affects the internal burr removal effect.

[0035] Therefore, such as Figures 1-7 As shown, one aspect of this disclosure provides a tool holder device, including a first tool holder base 1, a second tool holder base 2, and a cutting tool 3.

[0036] The second tool holder base 2 is slidably connected to the first tool holder base 1 along the first direction. The first tool holder base 1 is provided with a first locking member that can lock the second tool holder base 2. The second tool holder base 2 has a first end and a second end that are arranged opposite to each other in the first direction. The first end of the second tool holder base 2 is configured to slide out of the first tool holder base 1. The first end of the second tool holder base 2 is provided with a mounting part 4. The cutting blade 3 is detachably connected to the mounting part 4. In the first direction, the cutting blade 3 protrudes out of the first tool holder base 1 and the second tool holder base 2.

[0037] The second tool holder base 2 can change position relative to the first tool holder base 1, and the cutting insert 3 is connected to the second tool holder base 2, allowing the cutting insert 3 to follow the position change for adaptive position adjustment. The first locking member can lock the second tool holder base 2, preventing it from changing position arbitrarily and ensuring the cutting insert 3's effectiveness in removing internal burrs from the weld. Understandably, when the cutting insert 3 needs to be adjusted, the first locking member can unlock the second tool holder base 2; after adjustment, the first locking member can lock the second tool holder base 2.

[0038] In the above technical solution, the mounting part 4 provided on the second tool holder base 2 allows the cutting blade 3 to be connected to the second tool holder base 2 through the mounting part 4. The cutting blade 3 moves directly with the movement of the second tool holder base 2 and is not connected to the first tool holder base 1. Therefore, when the second tool holder base 2 needs to be adjusted, the cutting blade 3 still maintains its position relative to the second tool holder base 2. This achieves a change in the position of the cutting blade 3 in the first direction without any change in position in other directions, ensuring the accuracy of the cutting blade 3 in removing burrs from the weld and ensuring the removal effect of the internal burrs.

[0039] Optionally, in one embodiment of this disclosure, the first locking member is constructed as a screw, wherein one of the first tool holder base 1 and the second tool holder base 2 has a screw hole, and the other has a through hole. The first locking member passes through the through hole and is threadedly connected to the screw hole, thereby achieving the connection and locking of the first tool holder base 1 and the second tool holder base 2. In some examples, the axes of both the screw hole and the through hole extend along a second direction, and the through hole can be an elongated hole along a first direction, so that after the second tool holder base 2 moves relative to the first tool holder base 1, the first locking member can move within a certain range within the through hole, and can still pass through the through hole and connect to the screw hole.

[0040] Alternatively, in other embodiments, the first locking member may be constructed as a clamp or similar structure, which can clamp the first tool holder base 1 and the second tool holder base 2 together to achieve locking.

[0041] Optionally, in one embodiment of this disclosure, the mounting part 4 is configured as a mounting groove, the cutting edge 3 is connected to the mounting groove, the cutting head of the cutting edge 3 protrudes from the groove opening of the mounting groove, and the mounting groove is provided with a second locking member capable of locking the cutting edge 3. The mounting groove can accommodate the cutting edge 3, reducing the size of the entire tool holder device and preventing the tool holder device from becoming too large. The portion of the cutting edge 3 protruding from the groove opening of the mounting groove can be used for removing internal burrs.

[0042] The second locking element can lock or unlock the cutting tool 3, allowing it to be replaced and ensuring effective removal of internal burrs. In essence, when the cutting tool 3 needs replacement, the second locking element is used to unlock it, allowing the old cutting tool 3 to be removed from the mounting slot. The new cutting tool 3 can then be placed in the slot and locked again using the second locking element. The operation is convenient and quick. It should be noted that the mounting slot can be slightly larger than the cutting tool 3 to facilitate replacement.

[0043] Alternatively, in another embodiment of this disclosure, the mounting part 4 may be configured as a mounting plate, which is formed at the first end of the second tool holder base 2, and a second locking member is provided on the mounting plate.

[0044] Optionally, in one embodiment of this disclosure, the second locking member is constructed as a screw, and a through screw hole 5 is provided on one side wall of the mounting groove. The second locking member is threaded into the through screw hole 5, and the second locking member located at one end of the mounting groove can abut against the side wall of the blade 3. By screwing the second locking member, the blade 3 can be easily unlocked or locked, which is convenient to operate, has a good fixing effect, low manufacturing cost, and does not occupy too much space.

[0045] In some examples, the axis of the through screw hole 5 extends along the second direction, and the threaded end of the second locking member passes through the through screw hole 5 and contacts the side wall of the blade 3. As the second locking member is screwed on, the blade 3 is pushed to fit against the groove wall of the mounting groove to achieve locking.

[0046] Alternatively, in another embodiment of this disclosure, the second locking member may be configured as a gripper to hold the cutting edge 3.

[0047] Optionally, in one embodiment of this disclosure, the tool holder device further includes a fine-tuning mechanism 6. The fine-tuning mechanism 6 is connected to the first tool holder base 1, and its adjusting end is connected to the second tool holder base 2. The fine-tuning mechanism 6 is configured to drive the second tool holder base 2 and the cutting edge 3 to move back and forth along a first direction. By using the fine-tuning mechanism 6, the position of the second tool holder base 2 relative to the first tool holder base 1 can be adjusted, allowing the second tool holder base 2 to move back and forth in the first direction, thereby changing the position of the cutting edge 3 to adapt to the weld seam. In other words, the cutting edge 3 can be adjusted to move closer to or further away from the weld seam, providing greater flexibility in use.

[0048] Optionally, in one embodiment of this disclosure, the fine-tuning mechanism 6 includes a fine-tuning screw 61, and a fine-tuning screw hole 7 extending along a first direction is provided at the second end of the second tool holder base 2. The fine-tuning screw 61 is threadedly connected to the fine-tuning screw hole 7. By providing the fine-tuning screw hole 7 on the second tool holder base 2, the fine-tuning screw 61 is connected to the second tool holder base 2, thereby pushing the second tool holder base 2 to move back and forth, realizing a change in position.

[0049] The fine-tuning screw 61 also extends along the first direction and engages with the threaded fine-tuning screw hole 7. By rotating the fine-tuning screw 61, it can be screwed into or out of the fine-tuning screw hole 7. The second tool holder base 2 is slidable relative to the first tool holder base 1, while the position of the fine-tuning screw 61 relative to the first tool holder base 1 remains unchanged. At this time, the second tool holder base 2 achieves displacement along the first direction. In some examples, the fine-tuning screw 61 is rotatably connected to the first tool holder base 1.

[0050] Optionally, in one embodiment of this disclosure, the fine-tuning mechanism 6 further includes a mounting block 62. The mounting block 62 is connected to the first tool holder base 1 and is disposed opposite to the second end of the second tool holder base 2. The fine-tuning screw 61 is rotatably connected to the mounting block 62. A limiting part 621 is provided on the mounting block 62, which is configured to restrict the fine-tuning screw 61 from being relatively fixed to the first tool holder base 1. The mounting block 62 can be used to install and fix the fine-tuning screw 61 without affecting its rotation. Then, through the limiting effect of the limiting part 621 on the mounting block 62, the position of the fine-tuning screw 61 relative to the first tool holder base 1 remains unchanged, thus generating a reaction force to push the position of the second tool holder base 2 to change.

[0051] The end of the fine-tuning screw 61 away from the second tool holder base 2 is connected to the mounting block 62. As the fine-tuning screw 61 rotates, the second end of the second tool holder base 2 can move closer to or further away from the mounting block 62.

[0052] Optionally, in one embodiment of this disclosure, the fine-tuning screw 61 includes a threaded post 611, a rotation operating part 612, a connecting rod 613, and a limiting engagement part 614. One end of the threaded post 611 is connected to the rotation operating part 612, and the other end of the threaded post 611 is threaded to the fine-tuning screw hole 7. The side of the rotation operating part 612 has a plurality of operating holes 615. The two ends of the connecting rod 613 are respectively connected to the rotation operating part 612 and the limiting engagement part 614.

[0053] The threaded column 611, the rotating operating part 612, the connecting rod 613 and the limiting mating part 614 are arranged coaxially, and the multiple operating holes 615 on the side of the rotating operating part 612 are distributed at intervals around the axis of the fine-tuning screw 61.

[0054] The limiting part 621 is constructed as a limiting groove, and the opening of the limiting groove forms a limiting protrusion. A part of the connecting rod 613 and the limiting mating part 614 extend into the limiting groove. The engagement between the limiting protrusion and the limiting mating part 614 restricts the limiting mating part 614 to be located within the limiting groove. This arrangement ensures that the rotation of the fine-tuning screw 61 is not affected, while maintaining the position of the fine-tuning screw 61 relative to the first tool holder base 1.

[0055] The limiting protrusion protrudes inward along the radial direction of the opening of the limiting groove, thereby forming a ring structure. The connecting pipe can pass through the limiting protrusion. The limiting protrusion can contact the connecting rod 613 or not. The limiting protrusion can restrict the limiting mating part within the limiting groove.

[0056] It is understandable that the operating hole 615 on the rotating operating part 612 can be inserted with an external tool. The inserted external tool can drive the rotating operating part 612 to rotate, thereby driving the threaded column 611 to rotate. The connecting rod 613 and the limiting mating part 614 rotate accordingly. The limiting mating part 614 rotates in the limiting groove, thereby generating a reaction force to push the second tool holder base 2 to move.

[0057] Optionally, in one embodiment of this disclosure, one side wall of the limiting groove is constructed as an open structure, a connecting slider 622 is provided on the mounting block 62, a connecting groove 11 is provided on the first tool holder base 1, and the connecting slider 622 is slidably connected to the connecting groove 11.

[0058] The connecting slider 622 and connecting groove 11 make it easy to install the mounting block 62 onto the first tool holder base 1. At the same time, one side wall of the limiting groove is set as an open structure, which allows the connecting rod 613 and the limiting mating part 614 to extend into the limiting groove. That is to say, as the mounting block 62 slides on the first tool holder base 1, the connecting rod 613 and the limiting mating part 614 enter the limiting groove, improving assembly efficiency.

[0059] The connecting slide 11 can have open ends, allowing the connecting slider 622 to easily slide into it. In some examples, the connecting slide 11 can be a dovetail groove, and the connecting slider 622 can be a dovetail slider. A locking screw can also be provided on the first tool holder mechanism to lock the mounting block 62. Of course, the connecting slide 11 and the connecting slider 622 can also be T-shaped structures; this is not a limitation.

[0060] Optionally, in one embodiment of this disclosure, a guide groove 12 extending along a first direction is provided on the first tool holder base 1, and a guide slider 21 extending along the first direction is provided on the second tool holder base 2. The guide slider 21 is slidably connected to the guide groove 12, and the cooperation between the guide slider 21 and the guide groove 12 can restrict the movement of the second tool holder base 2 along the first direction. Through the provided guide groove 12 and guide slider 21, the second tool holder base 2 is kept moving along the first direction, improving the stability of the second tool holder's movement. In some examples, one end of the guide groove 12 can be designed to be open, allowing the guide slider 21 to easily slide into the guide groove 12.

[0061] Optionally, in one embodiment of this disclosure, the number of guide grooves 12 and the number of guide sliders 21 are both two, and they are arranged opposite to each other in the second direction. The guide grooves 12 are constructed as dovetail grooves, and the guide sliders 21 are constructed as dovetail sliders. The first direction and the second direction are perpendicular to each other. This arrangement improves the movement stability of the second tool holder base 2.

[0062] Understandably, the cooperation of the two guide grooves 12 and the two guide sliders 21 generates two interacting forces and two mutually limiting and guiding effects in the second direction, preventing the second tool holder base 2 from shaking. In some examples, the two guide grooves 12 and the two guide sliders 21 are located on the left and right sides of the fine-tuning screw 61 in the second direction, respectively.

[0063] Alternatively, in another embodiment of this disclosure, the number of guide grooves 12 and the number of guide sliders 21 are both one. The guide grooves 12 are T-shaped, and the cross-section of the guide sliders 21 is T-shaped. This can also ensure the movement stability of the second tool holder base 2.

[0064] A second aspect of this disclosure also provides a burr removal device for high-frequency welds, including the aforementioned tool holder device.

[0065] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0066] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0067] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A tool holder device, characterized in that: It includes a first tool holder base body, a second tool holder base body and tool particles; The second tool holder base is slidably connected to the first tool holder base along a first direction, a first locking piece capable of locking the second tool holder base is provided on the first tool holder base, the second tool holder base has a first end and a second end oppositely arranged in the first direction, the first end of the second tool holder base is arranged to be able to slidably protrude from the first tool holder base, a mounting portion is provided at the first end of the second tool holder base, the knife grain is detachably connected to the mounting portion, and in the first direction, the knife grain protrudes from the first tool holder base and the second tool holder base.

2. The tool holder device according to claim 1, characterized in that: The mounting portion is configured as a mounting groove, the knife particle is connected to the mounting groove, the knife head of the knife particle protrudes from the notch of the mounting groove, and the mounting groove is provided with a second locking piece capable of locking the knife particle.

3. The tool holder device according to claim 2, characterized in that: The second locking piece is constructed as a screw, a through screw hole is formed on one side wall of the installation slot, the second locking piece is threadedly connected to the through screw hole, and the second locking piece is located at one end of the installation slot and can abut against the side wall of the knife particle.

4. The tool holder device according to claim 1, characterized in that: The tool holder device also includes a fine-tuning mechanism, which is connected to the first tool holder base, and the adjustment end of the fine-tuning mechanism is connected to the second tool holder base. The fine-tuning mechanism is configured to drive the second tool holder base and the tool particle to move back and forth along the first direction.

5. The tool holder device according to claim 4, characterized in that: The fine-tuning mechanism comprises a fine-tuning screw, a fine-tuning screw hole extending along a first direction is formed at the second end of the second tool holder base, and the fine-tuning screw is threadedly connected to the fine-tuning screw hole.

6. The tool holder device according to claim 5, characterized in that: The fine-tuning mechanism also includes a mounting block, which is connected to the first tool holder base. The mounting block and the second end of the second tool holder base are arranged opposite to each other. The fine-tuning screw is rotatably connected to the mounting block. A limiting portion is provided on the mounting block, and the limiting portion is configured to limit the relative fixation of the fine-tuning screw and the first tool holder base.

7. The tool holder device according to claim 6, characterized in that: The fine-tuning screw comprises a threaded column, a rotation operation part, a connecting rod and a position-limiting matching part, one end of the threaded column is connected to the rotation operation part, the other end of the threaded column is threadedly connected to the fine-tuning screw hole, a plurality of operation holes are formed on the side of the rotation operation part, and the two ends of the connecting rod are respectively connected to the rotation operation part and the position-limiting matching part; The limiting portion is configured as a limiting groove, a notch of which forms a limiting convex portion, a portion of the connecting rod and the limiting matching portion extend into the limiting groove, and the limiting convex portion cooperates with the limiting matching portion to limit the limiting matching portion to be located in the limiting groove.

8. The tool holder device according to claim 7, characterized in that: One side wall of the limiting groove is constructed as an open structure, a connecting slide block is provided on the mounting block, a connecting slide groove is provided on the first tool holder base, and the connecting slide block is slidably connected to the connecting slide groove.

9. The tool holder device according to any one of claims 1 to 8, characterized in that: The first tool holder base is provided with a guide groove extending along the first direction, and the second tool holder base is provided with a guide slider extending along the first direction. The guide slider is slidably connected to the guide groove, and the cooperation between the guide slider and the guide groove can limit the movement of the second tool holder base along the first direction.

10. The tool holder device according to claim 9, characterized in that: The number of the guide grooves and the number of the guide sliders are both two and are arranged opposite to each other in the second direction, the guide grooves are configured as dovetail grooves, and the guide sliders are configured as dovetail sliders; The first direction and the second direction are perpendicular to each other.

11. A high-frequency welding seam burr removal device, characterized in that: The invention comprises a tool holder device as claimed in any one of claims 1 to 10.