Tool apron assembly

Abstract

The utility model discloses a tool apron assembly which comprises an apron body, a plurality of tool aprons and an adjusting transmission mechanism. Each tool apron is used for fixing at least one tool, and the multiple tool aprons comprise the first tool apron with the adjustable installation position in the first direction. The first tool apron is in transmission connection with the base body through an adjusting transmission mechanism, the adjusting transmission mechanism comprises an adjusting screw rod extending in the first direction, an adjusting pin and a limiting nut, the adjusting screw rod is sleeved with the adjusting pin, and in the embodiment, the position of the first tool apron can be adjusted by rotating the adjusting pin or the limiting nut. According to the adjusting mechanism, the limiting nut abuts against the end side of the adjusting pin, after adjustment is completed, the adjusting pin is clamped between the limiting nut and the first tool apron through the interaction between the limiting nut and the adjusting pin, the locking force of the adjusting transmission mechanism is improved, the limiting stability of the first tool apron is improved, and the machining precision of a machine tool is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a tool holder assembly. Background Technology

[0002] In the field of machining, machine tool processing is an important production method, and planing, as one of the processing methods, is widely used in the manufacturing process of various mechanical parts. During planing, the tool holder is a key component used to fix the machining tools, and its performance directly affects the machining accuracy and efficiency. To improve machining efficiency, in actual production, it is often necessary to fix multiple tools on a single tool holder, and the installation position of the tools on the tool holder can be flexibly adjusted according to different machining tasks and the shape and size requirements of the workpiece.

[0003] In existing technologies, the lead screw and nut transmission mechanism is a commonly used method for adjusting the tool position, which can achieve a certain degree of precise adjustment of the tool position. However, after the tool position is adjusted, the tool position is usually limited and fixed only by the locking force between the lead screw and the nut. During the machining process, the reaction force and vibration force on the tool holder can easily cause the locking between the nut and the lead screw to fail, which in turn causes the tool to move with the tool holder, thus adversely affecting the machining accuracy of the machine tool. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, the main purpose of this utility model is to provide a tool holder assembly that can effectively adjust the tool position, improve the tool limiting stability, and improve the machining accuracy of the machine tool.

[0005] To achieve the above objectives, the present invention provides a tool holder assembly, comprising:

[0006] seat body;

[0007] A plurality of tool holders are spaced apart and mounted on the base body along a first direction, the plurality of tool holders including a first tool holder, the mounting position of the first tool holder relative to the base body in the first direction being adjustable; and,

[0008] The adjustment transmission mechanism includes an adjustment screw extending along a first direction, and an adjustment pin and a limiting nut sleeved on the adjustment screw. One end of the adjustment screw is fixed to the first tool holder, and the other end of the adjustment screw is connected to the seat body through the adjustment pin and the limiting nut, so that the first tool holder moves along the first direction with the rotation of the adjustment pin or the limiting nut.

[0009] The seat body is provided with an adjusting screw hole extending in the first direction, the adjusting pin is rotatably sleeved on the adjusting screw rod and is screwed with the adjusting screw hole through external threads, the limiting nut is screwed with the adjusting screw rod through internal threads, and the limiting nut abuts against the end of the adjusting pin away from the first tool seat in the first direction.

[0010] Optionally, the seat body comprises a bottom plate, one side of the bottom plate is provided with a guide portion extending in the first direction, each tool seat is provided with a guide matching portion, and each guide matching portion is slidably matched with the guide portion.

[0011] Optionally, the guide portion is a guide rail protruding from one side of the bottom plate, and the guide matching portion is a groove recessed in each tool seat, and the guide rail is slidably embedded in the corresponding groove.

[0012] Optionally, the seat body further comprises a side plate, the side plate protrudes from the side of the bottom plate on which the guide portion is provided, and the side plate is provided with the adjusting screw hole.

[0013] Optionally, the first tool seat is located on one side of the side plate in the first direction, the adjusting pin and the limiting nut are located on the other side of the side plate in the first direction, and the limiting nut is located at the end of the adjusting pin away from the side plate.

[0014] Optionally, the side plate is provided with two side plates, each of the side plates is provided with the adjusting screw hole, and the two side plates are arranged at two ends of the bottom plate in the first direction, the first tool seat is provided with two first tool seats, the adjusting transmission mechanism is provided with two sets of adjusting transmission mechanisms, one end of each adjusting screw rod is fixedly connected with the corresponding first tool seat, and the other end of each adjusting screw rod is screwed with the corresponding adjusting screw hole.

[0015] Optionally, the plurality of tool seats further comprise a second tool seat, the second tool seat is fixedly installed on the bottom plate and arranged between the two first tool seats in the first direction.

[0016] Optionally, an annular flange is arranged at the end of the adjusting pin facing the limiting nut, a nut is arranged at the end of the limiting nut facing the adjusting pin, and the flange abuts against the nut.

[0017] Optionally, the first tool seat is provided with a mounting screw hole and a locking screw hole, the mounting screw hole extends in the first direction, the locking screw hole intersects and communicates with the mounting screw hole, the adjusting screw rod is inserted into the mounting screw hole, and the first tool seat further comprises a locking pin screwed into the locking screw hole, the locking pin abuts against the adjusting screw rod to limit the movement of the screw rod in the first direction.

[0018] Optionally, each of the tool holders is provided with a mounting channel in a second direction, and each of the mounting channels is used for allowing the tool to be inserted into the mounting channel in the second direction in a position-adjustable manner.

[0019] The technical scheme provided by the utility model has the following beneficial effects:

[0020] The tool holder assembly provided by the utility model comprises a seat body, a plurality of tool holders and an adjusting transmission mechanism. Each tool holder is used for fixing at least one tool, the plurality of tool holders are mounted on the seat body in a spaced manner along a first direction, and the first tool holder is adjustable in the mounting position in the first direction relative to the seat body. The first tool holder is in transmission connection with the seat body through the adjusting transmission mechanism. The adjusting transmission mechanism comprises an adjusting screw extending along the first direction, and an adjusting pin and a limiting nut sleeved on the adjusting screw. When the adjusting pin or the limiting nut is operated to rotate, the adjusting screw can drive the first tool holder to move, so that the position adjustment of the first tool holder is realized. In the embodiment provided by the utility model, the limiting nut abuts against the end side of the adjusting pin. After the adjustment is completed, the adjusting pin is clamped between the limiting nut and the first tool holder through the interaction between the limiting nut and the adjusting pin. The locking force of the adjusting transmission mechanism is improved, the limiting stability of the first tool holder is improved, and the machining precision of the machine tool is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained from the drawings shown without creating laboriously.

[0022] Figure 1 It is a perspective structural schematic view of an embodiment of the tool holder assembly provided by the utility model.

[0023] Figure 2 It is a sectional view of the tool holder assembly. Figure 1

[0024] Figure 3 It is a perspective structural exploded schematic view of the tool holder assembly. Figure 1

[0025] Figure 4 It is a perspective structural schematic view of the adjusting transmission mechanism. Figure 3

[0026] Figure 5 It is a perspective structural exploded schematic view of the adjusting transmission mechanism. Figure 4

[0027] Figure 6 It is​​​​Figure 3 The first knife seat is shown in the perspective view;

[0028] Figure 7 The first knife seat is shown in the perspective view; Figure 6 The first knife seat is shown in the perspective view;

[0029] Figure 8 The first knife seat is shown in the perspective view; Figure 2 The first knife seat is shown in the perspective view.

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 100-knife seat assembly; 10-seat body; 11-bottom plate; 111-guide part; 12-side plate; 121-adjusting screw hole; 20-knife seat; 21-first knife seat; 22-second knife seat; 211-guide matching part; 212-mounting screw hole; 213-locking screw hole; 214-locking pin; 215-mounting channel; 30-adjusting transmission mechanism; 31-adjusting screw; 32-adjusting pin; 321-flange; 33-limiting nut; 331-nut; 40-tool.

[0032] The implementation, functional features and excellent effects of the utility model will be further described below in combination with specific embodiments and drawings. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] It should be noted that if the embodiments of the utility model involve directional indications, the directional indications are only used to explain the relative position relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0035] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0036] The utility model provides a tool holder assembly 100 for machine tool processing, especially planer processing. Among them, the tool holder assembly 100 is used to fix the tool 40, in this embodiment, the tool 40 assembly can fix multiple tools 40, and the relative position between at least two tools 40 can be accurately adjusted, so that the versatility of the tool holder assembly 100 is stronger.

[0037] Specifically, please refer to Figures 1 to 8 The tool holder assembly 100 provided by the embodiment includes a seat body 10, a plurality of tool holders 20 and an adjusting transmission mechanism 30. Each tool holder 20 is used to fix a tool 40. The plurality of tool holders 20 are installed on the seat body 10 in a spaced manner along a first direction, and at least part of the tool holders 20 are respectively adjustable in the installation position relative to the seat body 10. Specifically, among the plurality of tool holders 20, all the tool holders 20 can be respectively adjusted in the position relative to the seat body 10, or part of the tool holders 20 are fixed, and part of the tool holders 20 are adjustable in the installation position on the seat body 10. In this embodiment, at least part of the tool holders 20 are adjustable in the installation position relative to the seat body 10 in at least the first direction. Specifically, the plurality of tool holders 20 include a first tool holder 21 adjustable in the installation position relative to the seat body 10 in the first direction. It can be understood that the number of the first tool holder 21 can be one or more.

[0038] It should be noted that in the utility model, the first direction intersects the processing direction of the tool 40, and preferably the first direction is perpendicular to the processing direction of the tool 40, and the second direction is parallel to the processing direction of the tool 40.

[0039] As Figures 1 to 3 Indicated, the first tool holder 21 is drivingly connected with the seat body 10 through the adjusting transmission mechanism 30, so that the installation position thereof on the seat body 10 is adjustable. Specifically, please continue to refer to Figure 4 And Figure 5The adjusting transmission mechanism 30 comprises an adjusting screw 31 extending along the first direction, and an adjusting pin 32 and a limiting nut 33 sleeved on the adjusting screw 31, one end of the adjusting screw 31 is fixed to the first tool holder 21, and the other end of the adjusting screw 31 is in transmission connection with the seat body 10 through the adjusting pin 32 and the limiting nut 33, so that the first tool holder 21 moves along the first direction with the rotating action of the adjusting pin 32 or the limiting nut 33.

[0040] Specifically, the adjusting screw 31 and the fixing part of the first tool holder 21 are integrally formed or connected by welding, or are connected in a manner that cannot rotate relative to each other and cannot move relative to each other along the first direction, preferably, the two are connected in a detachable manner, so that the first tool holder 21 or the adjusting transmission mechanism 30 can be conveniently replaced or repaired as needed.

[0041] Specifically, referring to Figure 2 and Figure 8 , the seat body 10 is provided with an adjusting screw hole 121 extending along the first direction, the adjusting pin 32 is rotatably sleeved on the adjusting screw 31, preferably, the adjusting pin 32 rotatably supports the adjusting screw 31 through a rotating bearing, and the adjusting pin 32 is screwed with the seat body 10 through the external threads thereof. The limiting nut 33 is screwed with the adjusting screw 31 through the internal threads thereof, and the limiting nut 33 abuts against the end side of the adjusting pin 32 away from the first tool holder 21 in the first direction.

[0042] In this embodiment, referring to Figure 8 , when it is needed to adjust the installation position of the first tool holder 21 to move to the left side shown in the figure relative to the seat body 10, the limiting nut 33 can be first screwed to move to the left by a distance approximately required for the first tool holder 21 to move to the left, and then the adjusting pin 32 is operated to rotate until the adjusting pin 32 abuts against the limiting nut 33. At this time, the limiting nut 33 cannot move along the first direction due to the limiting of the adjusting pin 32. Then the limiting nut 33 is screwed to rotate relative to the adjusting screw 31, in this process, the adjusting screw 31 moves to the left relative to the limiting nut 33 due to the thread action brought by the rotation of the limiting nut 33, and further drives the first tool holder 21 to move to the left relative to the seat body 11 until the first tool holder 21 abuts against the adjusting pin 32. After the adjustment is completed, the mutual abutment between the limiting nut 33 and the adjusting pin 32 clamps the adjusting pin 32 between the limiting nut 33 and the first tool holder 21, which improves the locking force of the adjusting transmission mechanism 30, improves the limiting stability of the first tool holder 21, and improves the machining precision of the machine tool.

[0043] Conversely, when the installation position of the first tool holder 21 needs to be adjusted to move to the right in the drawing, the adjusting pin 32 can be screwed, and the adjusting pin 32 moves to the right relative to the seat body 10 until it abuts against the first tool holder 21. Continue to screw the adjusting pin 32, and the adjusting pin 32 continues to rotate relative to the adjusting hole 121 and pushes the first tool holder 21 to move to the right to the required adjusted position. After adjustment, the limiting nut 33 is screwed until it abuts against the adjusting pin 32, and the adjusting pin 32 is clamped between the limiting nut 33 and the first tool holder 21, which improves the locking force of the adjusting transmission mechanism 30, improves the limiting stability of the first tool holder 21, and improves the machining precision of the machine tool.

[0044] In the embodiment, when the installation position of the first tool holder 21 needs to be adjusted, the first tool holder 21 can be moved in the first direction by rotating the adjusting pin 32 or the limiting nut 33, which improves the misoperation problem of the conventional adjustment mode of positive and negative rotation operation of the same nut. In addition, after adjustment, the adjusting pin 32 is clamped between the limiting nut 33 and the first tool holder 21 through the interaction between the limiting nut 33 and the adjusting pin 32, which improves the locking force of the adjusting transmission mechanism 30, improves the limiting stability of the first tool holder 21, and improves the machining precision of the machine tool.

[0045] Further, as shown in Figure 3 The seat body 10 includes a bottom plate 11, and the bottom plate 11 is provided with a guide portion 111 extending in the first direction on one side. Each tool holder 20 is provided with a guide matching portion 211, and each guide matching portion 211 is slidably matched with the guide portion 111. The specific structure of the guide portion 111 and the guide matching portion 211 can be selected as needed, for example, it can be a guide rail and a groove that match each other. Preferably, the guide portion 111 is a guide rail protruding on one side of the bottom plate 11, and the guide matching portion 211 is a groove recessed on one side of each tool holder 20, and the guide rail is slidably embedded in the corresponding groove.

[0046] During the adjustment of the position of the first tool holder 21 in the first direction, the guide portion 111 and the guide matching portion 211 can play a guiding and limiting role to ensure that the first tool holder 21 moves stably in the first direction and does not deviate or shake, further improving the accuracy of the position adjustment of the tool 40. Moreover, this guiding structure can also enhance the stability of each tool holder 20 during work, so that the vibration and impact received by the tool 40 during machining can be better dispersed and buffered, which helps to prolong the service life of the tool 40 and improve the machining quality.

[0047] Preferably, please continue to refer to Figure 2 and Figure 3The seat body 10 further comprises a side plate 12 protruding from one side of the bottom plate 11 provided with the guide portion 111, and the side plate 12 is provided with an adjusting screw hole 121. In the embodiment, the side plate 12 provides a mounting and supporting basis for the adjusting transmission mechanism 30. The adjusting screw hole 121 is provided on the side plate 12, so that the screw connection between the adjusting pin 32 and the seat body 10 is more stable. In this way, when adjusting the position of the first tool seat 21, the adjusting pin 32 is matched with the adjusting screw hole 121 through external threads, and the side plate 12 can provide reliable supporting force for the adjusting pin 32, so as to ensure stable force transmission during adjustment.

[0048] Based on the above embodiment, as shown in Figures 1 to 3 , the first tool seat 21 is located on one side of the side plate 12 in the first direction, the adjusting pin 32 and the limiting nut 33 are located on the other side of the side plate 12 in the first direction, and the limiting nut 33 is located at the end of the adjusting pin 21 away from the side plate 12. Such a layout design makes the structure of the tool seat assembly 100 more compact and reasonable. In a limited space, the positions of various components are arranged properly, which not only facilitates the operator to operate the adjusting pin 32 and the limiting nut 33, but also ensures the effective connection between the adjusting transmission mechanism 30 and the tool seat 20. For example, the operator can directly operate the transmission sleeve on the outside of the side plate 12 without bypassing other components, and the operation is more convenient.

[0049] The side plate 12 is provided with two side plates 12 arranged at both ends of the bottom plate 11 in the first direction, and the first tool seat 21 is provided with two first tool seats 21, and the adjusting transmission mechanism 30 is provided with two sets of adjusting transmission mechanisms 30. Each first tool seat 21 is drivingly connected to the adjacent side plate 12 through the corresponding adjusting transmission mechanism 30. Specifically, one end of each adjusting screw 31 is fixedly connected to the corresponding first tool seat 21, and the other end of each adjusting screw 31 is correspondingly screwed into each adjusting screw hole 121. In the embodiment, the two first tool seats 21 can be independently adjusted to meet different machining requirements. For example, when machining some complex-shaped workpieces, the positions of the two first tool seats 21 can be adjusted to make the tool 40 better adapt to the profile of the workpiece, thereby improving the adaptability and precision of machining.

[0050] In an optional embodiment, please refer to Figures 1 to 3 , the plurality of tool seats 20 further comprises a second tool seat 22, which is fixedly installed on the bottom plate 11 and arranged between the two first tool seats 21 in the first direction. The arrangement of the second tool seat 22 enriches the layout mode of the tool 40 of the tool seat assembly 100. During machining, the tool 40 on the second tool seat 22 can cooperate with the tools 40 on the two first tool seats 21 to realize different machining processes.

[0051] On the basis of the above embodiment, please continue to refer to Figure 4 ,Figure 5 and Figure 8 The one end of the adjusting pin 32 towards the limiting nut 33 is provided with a ring-shaped flange 321, and the one end of the limiting nut 33 towards the adjusting pin 32 is provided with a nut 331, and the flange 321 abuts against the nut 331. In this way, the contact area between the limiting nut 33 and the adjusting pin 32 is increased, the friction therebetween is improved, and the locking limiting force of the adjusting transmission mechanism 30 is improved.

[0052] The fixing mode of the first tool seat 21 and the adjusting screw rod 31 can be various, and in alternative embodiments, the first tool seat 21 and the adjusting screw rod 31 can be integrally provided or detachably connected. Preferably, the first tool seat 21 and the adjusting screw rod 31 are detachably connected. Thus, the first tool seat 21 and the adjusting transmission mechanism 30 can be conveniently replaced and maintained.

[0053] The detachable connection between the two can be in various modes, and in the present embodiment, please refer to Figure 2 、 Figures 6 to 8 The first tool seat 21 is provided with a mounting screw hole 212 and a locking screw hole 213, the mounting screw hole 212 extends along the first direction, the locking screw hole 213 intersects and communicates with the mounting screw hole 212, the adjusting screw rod 31 is inserted into the mounting screw hole 212, and the first tool seat 21 further comprises a locking pin 214 screwed into the locking screw hole 213, the locking pin 214 abuts against the adjusting screw rod 31 to limit the movement of the screw rod along the first direction.

[0054] This structure design realizes the detachable connection between the adjusting screw rod 31 and the first tool seat 21, and realizes the reliable limiting of the installation position of the first tool seat 21. When it is necessary to adjust the installation position of the first tool seat 21 by using the adjusting transmission mechanism 30, the locking pin 214 can be conveniently loosened, and the installation position of the first tool seat 21 in the first direction can be accurately adjusted by operating the adjusting pin 32 or the limiting nut 33. After the position of the first tool seat 21 is adjusted, the locking pin 214 is tightened to abut against the adjusting screw rod 31, which can effectively limit the movement of the adjusting screw rod 31 along the first direction, ensure the position fixation of the first tool seat 21 during the machining process, and ensure the machining precision.

[0055] In the preferred embodiments, as Figure 6 and Figure 7As shown, each tool seat 20 is provided with a mounting channel 215 along the second direction, and each mounting channel 215 is used for the tool 40 to be inserted and positioned in the mounting channel 215 along the second direction. This design further increases the flexibility of the tool 40 installation. In actual processing, according to different processing technology and workpiece requirements, the position of the tool 40 in the mounting channel 215 can be adjusted. For example, when processing workpieces of different thicknesses, the tool 40 can be adjusted to the appropriate position in the mounting channel 215 along the second direction, ensuring that the tool 40 can accurately cut the processing part of the workpiece, improving the adaptability and precision of processing. At the same time, this design also facilitates the operator to replace different types of tools 40 according to the needs, improving the versatility of the tool seat assembly 100.

[0056] The above description is only the preferred embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or direct or indirect application in other related technical fields using the content of the present application specification and drawings is also included in the patent protection range of the present application.

Claims

1. A tool holder assembly characterized by, The utility model relates to a cutting tool holder, comprising: a seat body; a plurality of tool holders installed on the seat body in a spaced manner along a first direction, the plurality of tool holders comprising a first tool holder, the first tool holder being adjustable in position along the first direction relative to the seat body; and an adjusting transmission mechanism comprising an adjusting screw extending along the first direction, an adjusting pin and a limiting nut sleeved on the adjusting screw, one end of the adjusting screw being fixed to the first tool holder, the other end of the adjusting screw being in transmission connection with the seat body through the adjusting pin and the limiting nut, so that the first tool holder moves along the first direction with the rotating action of the adjusting pin or the limiting nut; wherein the seat body is provided with an adjusting screw hole extending along the first direction, the adjusting pin is sleeved on the adjusting screw in a rotatable manner and is screwed with the adjusting screw hole through external threads, the limiting nut is screwed with the adjusting screw through internal threads, and the limiting nut abuts against the end of the adjusting pin away from the first tool holder in the first direction.

2. The tool holder assembly of claim 1, wherein, The seat body comprises a bottom plate, one side of the bottom plate is provided with a guide portion extending along the first direction, each tool holder is provided with a guide matching portion, and each guide matching portion is in sliding cooperation with the guide portion.

3. The tool holder assembly of claim 2 wherein, The guide portion is a guide rail protruding from one side of the bottom plate, and the guide matching portion is a groove recessed in each tool holder, the guide rail being slidably embedded in the corresponding groove.

4. The tool holder assembly of claim 2 wherein, The seat body further comprises a side plate, the side plate protruding from the side of the bottom plate on which the guide portion is arranged, and the side plate is provided with the adjusting screw hole.

5. The tool holder assembly of claim 4 wherein, The first tool holder is located on one side of the side plate in the first direction, the adjusting pin and the limiting nut are located on the other side of the side plate in the first direction, and the limiting nut is located on the end of the adjusting pin away from the side plate.

6. The tool holder assembly of claim 4 wherein, The side plate is provided with two side plates, each of which is provided with the adjusting screw hole, the two side plates being arranged at the two ends of the bottom plate in the first direction, the first tool holder being provided with two first tool holders, and the adjusting transmission mechanism being provided with two sets of adjusting transmission mechanisms, one end of each adjusting screw being fixedly connected to each corresponding first tool holder, and the other end of each adjusting screw being screwed with each corresponding adjusting screw hole.

7. The tool holder assembly of claim 4 wherein, The plurality of tool holders further comprise a second tool holder, the second tool holder being fixedly installed on the bottom plate and arranged between the two first tool holders in the first direction.

8. The tool holder assembly of any one of claims 1 to 7, wherein, The end of the adjusting pin towards the limiting nut is provided with an annular flange, the end of the limiting nut towards the adjusting pin is provided with a nut, and the flange abuts against the nut.

9. The tool holder assembly of any one of claims 1 to 7, wherein, The first tool holder is provided with a mounting screw hole and a locking screw hole, the mounting screw hole extending along the first direction, the locking screw hole intersecting and communicating with the mounting screw hole, the adjusting screw being inserted into the mounting screw hole, and the first tool holder further comprising a locking pin screwed into the locking screw hole, the locking pin abutting against the adjusting screw to limit the movement of the screw along the first direction.

10. The tool holder assembly of any one of claims 1 to 7, wherein, Each tool holder is provided with a mounting channel along a second direction, and each mounting channel is used for inserting a cutting tool in a position-adjustable manner along the second direction.

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