Quick-change knife rest

Abstract

The utility model relates to the technical field of numerical control lathes, and discloses a quick-change tool rest which comprises a numerical control lathe four-station tool rest and a pressing block, the quick-change tool rest is clamped on the numerical control lathe four-station tool rest, an abutting block is further arranged on the end portion of one side of the quick-change tool rest, and the abutting block and the pressing block are perpendicular to each other and are integrally formed. The connecting base is fixedly installed on the surface of one side of the pressing block, and the connecting base and the pressing block are integrally formed; the knife holder is detachably connected to the connecting base, and one end of the knife holder makes contact with the abutting block. The quick-change tool rest can be in seamless butt joint with a numerical control lathe, the automation level of machining is further improved, automatic replacement and positioning of the tool can be achieved through programming control, the influence of manual operation factors on machining precision is reduced, and machining consistency and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled lathes, in particular to a quick-change tool rest. Background Art

[0002] In the field of precision machining of CNC lathes, the four-station tool holder is a common tool storage and switching mechanism. Although it has improved the level of automation in machining to a certain extent, its inherent limitations cannot be ignored, especially when faced with complex and high-precision machining tasks. The limitations of this tool holder are particularly significant.

[0003] First of all, the number of tools that can be installed on the four-station tool holder is limited, which to a certain extent limits the diversity and flexibility of processing tasks. For workpieces that require multiple tools for processing, frequent tool changes not only reduce processing efficiency, but also increase the labor intensity of operators. Especially in mass production environments, this limitation is more obvious and has become a bottleneck restricting the improvement of production efficiency. More importantly, the four-station tool holder has great difficulties in the repeated positioning of tools. Since the four-station tool holder does not have an infinite position device, the repeated installation position of the tool on the tool holder will have a large offset, resulting in the need to re-set the tool after each tool change. This not only increases auxiliary time and reduces production efficiency, but also increases the work intensity of the operator. At the same time, since manual tool setting errors are difficult to avoid, this also has an adverse effect on processing accuracy, especially in the field of high-precision processing, this effect is more significant. Minor tool setting errors may lead to problems such as workpiece size deviation and increased surface roughness, seriously affecting product quality and competitiveness, and there are certain defects. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The utility model aims to solve the shortcomings of the existing four-station tool holder in terms of tool quantity, tool repeat positioning accuracy, operation convenience, etc., and proposes a quick-change tool holder.

[0006] (II) Technical solution

[0007] The technical solution of the utility model to solve the above technical problems is as follows:

[0008] A quick-change tool rest, comprising a four-station tool rest for a CNC lathe,

[0009] The pressing block is clamped on the four-station tool holder of the CNC lathe, and a stop block is also arranged on one end of the pressing block, wherein the stop block and the pressing block are arranged perpendicular to each other, and the stop block and the pressing block are arranged in an integral form;

[0010] A connecting seat is fixedly mounted on one side surface of the pressing block, wherein the connecting seat and the pressing block are integrally formed;

[0011] A tool holder is detachably connected to the connecting seat, one end of which is in contact with the stop block, and a suitable CNC turning tool is installed in the tool holder;

[0012] The centering block is arranged on a side surface of the pressing block away from the abutting block, is used to limit the tool holder to between the abutting block and the centering block, and is connected to the pressing block.

[0013] On the basis of the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, the overall cross-section of the connecting seat is T-shaped, and a connecting groove that matches the shape of the connecting seat is processed on the surface of the tool holder close to the pressure block, wherein the connecting seat can be connected to the surface of the pressure block through the connecting groove and the connecting seat mortise and tenon.

[0015] Furthermore, a first fastener is provided on the surface of the stop block, the stop block and the tool holder are connected to each other through the first fastener, a first fastening groove adapted to the first fastener is provided on the tool holder, and the other end of the first fastener can be placed in the first fastening groove.

[0016] Furthermore, an inner support sleeve is embedded in the connecting seat, and an inner support bolt is provided on the centering block, wherein one end of the inner support bolt is connected to the inner support sleeve, and the centering block can be connected to the surface of the connecting seat through the inner support bolt and the inner support sleeve.

[0017] Furthermore, the centering block is provided with a second fastener, the centering block and the tool holder are connected to each other through the second fastener, the tool holder is provided with a second fastening groove adapted to the second fastener, and the other end of the second fastener can be placed in the second fastening groove.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0020] By adding components such as a pressure block, a stop block, a connecting seat and a tool holder to the four-station tool holder of a CNC lathe, the centering block and the tool holder form an independent quick-change unit. This design allows the number of quick-change units to be increased while keeping the original machine tool structure unchanged, thereby effectively increasing the number of installed tools, thereby improving the diversity and flexibility of processing tasks. The tool holder is connected to the pressure block through a connecting seat, and is limited by the stop block and the centering block to ensure that the tool holder can be accurately reset to the predetermined position when replaced. This design significantly reduces the offset of the tool during replacement and improves the repeated positioning accuracy of the tool, thereby reducing the number of times the tool is re-calibrated, and improving processing efficiency and processing accuracy. In addition, a T-section design and mortise and tenon connection are adopted between the tool holder and the connecting seat to achieve quick disassembly and installation, while The fastener design on the support block and the centering block makes the fixing and releasing process of the tool simpler and more convenient. This design not only simplifies the operation process, but also reduces the labor intensity of the operator and improves work efficiency. An inner support sleeve and an inner support bolt are also provided to further enhance the connection strength between the connecting seat and the centering block, and improve the stability and reliability of the entire quick-change tool holder. At the same time, the matching design of the fastener and the fastening groove also ensures the stability of the tool during the processing, and reduces the processing error caused by the shaking or loosening of the tool. The quick-change tool holder can be seamlessly connected with the CNC lathe, further improving the level of automation of the processing. Through programming control, the automatic replacement and positioning of the tool can be realized, reducing the influence of human operation factors on the processing accuracy, and improving the consistency and stability of the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the connection structure between the four-station tool rest and the pressing block of the CNC lathe of the utility model;

[0022] Figure 2 This is a schematic diagram of the overall connection structure of the entire quick-change tool holder of the utility model;

[0023] Figure 3 This is a schematic diagram of the connection structure between the pressing block and the abutting block of the utility model;

[0024] Figure 4 It is a schematic diagram of the connection structure between the tool holder and the first fastener of the utility model;

[0025] Figure 5 It is a schematic diagram of the connection structure between the tool holder and the second fastener of the utility model.

[0026] In the figure: 1. four-station tool rest of CNC lathe; 2. pressure block; 3. stop block; 4. connecting seat; 5. tool rest; 6. centering block; 7. connecting slide; 8. first fastener; 9. first fastening groove; 10. inner support sleeve; 11. inner support bolt; 12. second fastener; 13. second fastening groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Combination Figure 1-Figure 5 As shown, a quick-change tool rest of the utility model comprises a four-station tool rest 1 for a CNC lathe,

[0029] The pressing block 2 is clamped on the four-station tool rest 1 of the CNC lathe, and a stop block 3 is further arranged on one end of the pressing block 2, wherein the stop block 3 and the pressing block 2 are arranged perpendicular to each other, and the stop block 3 and the pressing block 2 are arranged in an integral form;

[0030] The connecting seat 4 is fixedly mounted on one side surface of the pressing block 2, wherein the connecting seat 4 and the pressing block 2 are integrally formed;

[0031] The tool holder 5 is detachably connected to the connecting seat 4, one end of which is in contact with the stop block 3, and a suitable CNC lathe tool is installed in the tool holder 5;

[0032] The centering block 6 is disposed on a surface of the pressing block 2 away from the stop block 3 , and is used to limit the tool holder 5 to between the stop block 3 and the centering block 6 , and is connected to the pressing block 2 .

[0033] Basic structure: The main part of the quick-change tool holder is based on the four-station tool holder 1 of the CNC lathe, which serves as the basis of the entire tool holder system. The role of the pressure block and the stop block: The pressure block 2 is clamped on the four-station tool holder 1 of the CNC lathe to play a role of fixing and supporting. The stop block 3 is arranged at one end of the pressure block 2 and is arranged perpendicular to the pressure block 2, and the two are integrally formed. The main function of the stop block 3 is to provide one-side limit and support for the tool holder 5 to ensure that the tool holder 5 can maintain an accurate position when replaced or positioned. Function of the connecting seat: The connecting seat 4 is fixedly installed on the surface of one side of the pressure block 2 and is also integrally formed with the pressure block 2. The connecting seat 4 provides a detachable connection point for the tool holder 5. Installation and positioning of the tool holder: The tool holder 5 is detachably connected to the connecting seat 4. When the tool holder 5 is installed, one end of it contacts the stop block 3 to ensure the positioning of the tool holder 5 in the horizontal direction. An adapted CNC lathe tool is installed inside the tool holder 5 for performing specific cutting tasks. Function of the centering block: The centering block 6 is disposed on the surface of the pressing block 2 away from the stop block 3 and is connected to the pressing block 2. The main function of the centering block 6 is to cooperate with the stop block 3 to limit the knife support 5 between the two, thereby ensuring the vertical positioning of the knife support 5. This design effectively prevents the knife support 5 from shaking or shifting during replacement or use.

[0034] When it is necessary to replace or position the tool, first ensure that the pressing block 2 is firmly clamped on the four-station tool rest 1 of the CNC lathe. Then, the tool holder 5 is connected to the pressing block 2 through the connecting seat 4, and at the same time, ensure that one end of the tool holder 5 is in contact with the stop block 3 and the other end is in contact with the centering block 6. In this way, the tool holder 5 is accurately positioned on the pressing block 2, and the stability and accuracy of the tool holder 5 are ensured by the limiting effect of the stop block 3 and the centering block 6. Next, a specific cutting task can be performed, or the tool holder 5 can be replaced and repositioned as needed.

[0035] It should be noted that the tool holder 5 is specially designed for turning tools. Its precise structure ensures that the tool can maintain a high positioning accuracy when it is replaced. First, we need to customize a tool holder 5 for each outer contour tool. This tool holder 5 not only matches the shape and size of the tool, but also has a high-precision positioning function. When the new tool and the tool holder 5 are assembled, we need to perform a tool setting operation. During this tool setting process, we will record the exact position of the tool relative to the machine tool coordinate system, that is, its tool setting value. These tool setting values ​​are an important reference for subsequent tool replacement. In addition, in order to further improve the positioning accuracy, we can also measure the difference of each tool on the tool holder 5. This difference refers to the slight difference between the actual position of the tool on the tool holder 5 and the theoretical position. By measuring this difference, we can fine-tune the positioning of the tool to ensure that the best positioning accuracy can be achieved every time the tool is replaced. With the support of the tool holder 5, tool setting values ​​and difference measurement, repeated replacement of tools on the pressure block becomes very simple and efficient. When the tool needs to be replaced, the new tool only needs to be installed on the adjusted tool holder 5 and then placed on the pressing block 2. Since the tool holder 5 has recorded the tool setting value and difference of the tool, the replaced tool can be used directly without the need for tool setting operation again.

[0036] This improved solution not only improves the convenience of tool replacement, but also significantly improves the positioning accuracy of the tool. It makes tool replacement easier, more efficient and more accurate in complex and high-precision processing tasks. This not only reduces the labor intensity of operators and improves production efficiency, but also ensures the quality and accuracy of processed products.

[0037] In a preferred embodiment, the present invention can be further configured as follows: Figures 1 to 5As shown; the overall cross-section of the connecting seat 4 is T-shaped, and a connecting groove 7 that matches the shape of the connecting seat 4 is processed on the surface of the side of the tool holder 5 close to the pressure block 2, wherein the connecting seat 4 can be connected to the surface of the pressure block 2 through the connecting groove 7 and the mortise and tenon of the connecting seat 4. In the design of the quick-change tool holder, a unique connection mechanism is proposed to improve the convenience and stability of tool replacement. This mechanism is mainly realized by the connecting groove 7 on the connecting seat 4 and the tool holder 5. The overall cross-section of the connecting seat 4 is T-shaped. This design not only provides a stable connection foundation, but also ensures precise matching with the tool holder 5. The T-shaped cross-section can effectively prevent displacement caused by vibration during the cutting process, thereby ensuring the stability and processing accuracy of the tool. A connecting groove 7 that matches the shape of the connecting seat 4 is processed on the surface of the side of the tool holder 5 close to the pressure block 2. This connecting groove 7 allows the tool holder 5 to move along the connecting The T-section of the seat 4 slides, thereby achieving fast and accurate positioning. During the sliding process, due to the close fit between the connecting groove 7 and the connecting seat 4, it can ensure that the connection between the tool holder 5 and the pressure block 2 is firm and reliable. The connecting seat 4 is connected to the tool holder 5 by mortise and tenon joints through the connecting groove 7. This connection method is not only simple and reliable, but also allows a certain amount of fine-tuning space to accommodate tools of different sizes or types. When the tool holder 5 slides into place along the connecting groove 7, the tool holder 5 is fixed on the pressure block 2, thereby completing the installation of the tool. The working principle is summarized as follows: by designing the connecting seat 4 with a T-section and the connecting groove 7 matched thereto, a fast, accurate and stable connection between the tool holder 5 and the pressure block 2 is achieved. This connection method not only improves the convenience of tool replacement, but also ensures the stability and accuracy of the tool during processing, and provides strong support for high-precision processing.

[0038] In a preferred embodiment, the present invention can be further configured as follows: Figures 1 to 5As shown; a first fastener 8 is arranged on the surface of the stop block 3, and the stop block 3 and the tool holder 5 are connected to each other through the first fastener 8. A first fastening groove 9 adapted to the first fastener 8 is arranged on the tool holder 5, and the other end of the first fastener 8 can be placed in the first fastening groove 9. In the design of the quick-change tool holder, in order to ensure the stable installation of the tool on the tool holder and allow the tool to be quickly replaced when needed, a specific fastening mechanism is proposed. This mechanism is mainly composed of the stop block 3, the first fastener 8 and the first fastening groove 9. The role of the stop block 3: the stop block 3 is a supporting and positioning component of the tool holder 5 and is installed at a certain position of the quick-change tool holder. A first fastener 8 is arranged on its surface. This fastener is used to tightly connect the stop block 3 and the tool holder 5 together. The function of the first fastener 8: the first fastener 8 is a key component connecting the stop block 3 and the tool holder 5, one end of which is fixed on the stop block 3, and the other end can be inserted into the first fastening groove 9 preset on the tool holder 5. By rotating or pushing the first fastener 8, the other end of the first fastener 8 can be fixed in the first fastening groove The first fastening groove 9 is designed as follows: the tool holder 5 is provided with a first fastening groove 9 adapted to the first fastener 8, and the shape and size of the groove match the first fastener 8 to ensure that the fastener can be smoothly inserted into and fixed in the groove. When the other end of the first fastener 8 is completely placed in the first fastening groove 9, a firm connection will be formed between the block 3 and the tool holder 5. The first fastener 8 is preferably a screw, and the first fastening groove 9 is preferably a threaded groove. Working principle: during the tool installation process, the tool holder 5 is first placed near the block 3 and aligned with the block 3, and then, one end of the first fastener 8 is fixed on the block 3, and the other end is inserted into the first fastening groove 9 on the tool holder 5. By rotating or pushing the first fastener 8, the other end is moved in the first fastening groove 9, and the pressure between the block 3 and the tool holder 5 is gradually increased. When the first fastener 8 is completely fixed, a stable and firm connection will be formed between the block 3 and the tool holder 5, ensuring the stability and accuracy of the tool during processing.

[0039] In a preferred embodiment, the present invention can be further configured as follows: Figures 1 to 5As shown; the connecting seat 4 is embedded with an inner support sleeve 10, and the centering block 6 is provided with an inner support bolt 11, wherein one end of the inner support bolt 11 is connected to the inner support sleeve 10, and the centering block 6 can be connected to the surface of the connecting seat 4 through the inner support bolt 11 and the inner support sleeve 10, and a mechanism for achieving a stable connection between the centering block 6 and the connecting seat 4 through the inner support sleeve 10 and the inner support bolt 11 is described, the connecting seat 4: the connecting seat is a key component in the quick-change tool holder, which is usually used to support and fix the tool assembly, and a special component is embedded in the connecting seat, the inner support sleeve 10: the inner The support sleeve 10 is a fixing part pre-embedded in the connecting seat 4. It usually has a threaded hole or other connecting structure matching the inner support bolt 11, which is used to cooperate with the inner support bolt 11 to achieve a fixing effect. Centering block 6: The centering block is a component used to position and fix the tool in the quick-change tool holder. Its position and stability are crucial to ensuring the machining accuracy of the tool. Internal support bolt 11: The internal support bolt 11 is an adjustable fastener installed on the centering block 6. One end of it has a thread or other connecting structure matching the inner support sleeve 10, which can be screwed in or out of the inner support Sleeve 10, thereby realizing the connection and fixation between the centering block 6 and the connecting seat 4. Working principle: During the installation process of the quick-change tool holder, the centering block 6 needs to be placed in the appropriate position of the connecting seat 4 first to ensure the alignment and stability between them. Next, the inner support bolt 11 is screwed in from one side of the centering block 6 until its other end contacts the inner support sleeve 10 inside the connecting seat 4. At this time, by continuing to rotate the inner support bolt 11, it can be tightly connected with the inner support sleeve 10, thereby fixing the centering block 6 on the surface of the connecting seat 4. The screwing depth of the inner support bolt 11 determines The fixing tightness between the centering block 6 and the connecting seat 4 can be easily adjusted by rotating the inner support bolt 11 to adjust its screw-in depth to adapt to centering blocks 6 and connecting seats 4 of different sizes and shapes. This adjustment function makes the connection mechanism highly adaptable and flexible. When the inner support bolt 11 is fully screwed in and tightly connected with the inner support sleeve 10, the centering block 6 will be firmly fixed on the surface of the connecting seat 4. This connection method can provide high stability, ensuring that the centering block 6 will not loosen or move during the processing, thereby ensuring the processing accuracy and stability of the tool.

[0040] Through the coordinated use of the inner support sleeve 10 and the inner support bolt 11, the dependent claim realizes a stable, reliable and easily adjustable connection mechanism, which not only improves the stability and machining accuracy of the quick-change tool holder, but also simplifies the installation and adjustment process and improves work efficiency.

[0041] In a preferred embodiment, the present invention can be further configured as follows: Figures 1 to 5As shown; a second fastener 12 is provided on the centering block 6, and the centering block 6 and the tool holder 5 are connected to each other through the second fastener 12. A second fastening groove 13 adapted to the second fastener 12 is provided on the tool holder 5, and the other end of the second fastener 12 can be placed in the second fastening groove 13. A mechanism for achieving a stable connection between the centering block 6 and the tool holder 5 through the second fastener 12 and the second fastening groove 13 is described. The centering block 6: The centering block is an important component in the quick-change tool holder. It is mainly used to position and fix the tool to ensure the stability and Accuracy, second fastener 12: The second fastener is an adjustable fastener installed on the centering block 6, one end of which is fixed on the centering block 6, and the other end can be inserted into the second fastening groove 13 preset on the tool holder 5. The connection tightness between the second fastener 12 and the second fastening groove 13 can be adjusted by rotating or pushing and pulling operations. Tool holder 5: The tool holder is another key component in the quick-change tool holder for supporting and fixing the tool. It provides a second fastening groove 13 adapted to the second fastener 12 for connecting with the centering block 6. Second fastening groove 13: Second fastening The groove is a groove of a specific shape arranged on the tool holder 5, and its shape and size match the second fastener 12. When the other end of the second fastener 12 is fully extended into and fixed in the second fastening groove 13, a stable connection will be formed between the centering block 6 and the tool holder 5. Working principle: Installation and alignment: When installing the tool on the quick-change tool holder, first place the tool holder 5 in a suitable position and align it with the centering block 6 to ensure that the relative position between the centering block 6 and the tool holder 5 is accurate. Fix one end of the second fastener 12 on the centering block 6 and extend the other end into the tool holder 5. The second fastener 12 is inserted into the second fastening groove 13, and the second fastener 12 is rotated or pushed and pulled to make it tightly connected with the second fastening groove 13. In this process, the second fastener 12 will generate a certain pressure to tightly connect the centering block 6 and the tool holder 5. According to actual needs, the connection tightness between the centering block 6 and the second fastening groove 13 can be adjusted by rotating or pushing and pulling the second fastener 12. When the second fastener 12 is fully extended into and fixed in the second fastening groove 13, the connection between the centering block 6 and the tool holder 5 will reach the tightest state, ensuring the stability and accuracy of the tool during processing.

[0042] This connection mechanism realized by the second fastener 12 and the second fastening groove 13 has the advantages of simple structure, easy operation, stable and reliable connection, etc. It can not only ensure the stability and accuracy of the tool during the processing, but also improve the versatility and flexibility of the quick-change tool holder, so that tools of different sizes and shapes can be easily installed on the quick-change tool holder.

[0043] The specific working principle of the quick-change tool holder of the utility model is as follows:

[0044] The entire quick-change tool holder embodies a highly modular, standardized and precise design, which realizes the rapid and stable installation and replacement of the tool, while ensuring the processing accuracy and stability. The pressure block 2 is used as the basic supporting component and is clamped on the four-station tool holder 1 of the CNC lathe. The stop block 3 on it contacts one end of the tool holder 5 to provide initial positioning and support. The tool holder 5 is customized for the outer contour tool to ensure high-precision positioning during replacement. The T-section of the connecting seat 4 is connected to the connecting slide 7 on the tool holder 5 by mortise and tenon to achieve a detachable connection. The first fastener 8 and the second fastener 12 are respectively connected to the first fastener 12 on the tool holder 5. A fastening groove 9 and a second fastening groove 13 are matched with each other, and the connection tightness and stability are enhanced by rotating or adjusting the fasteners. In addition, the inner support sleeve 10 of the connecting seat 4 cooperates with the inner support bolt 11 on the centering block 6 to fix the centering block 6 to the connecting seat 4, further ensuring the stability of the tool. The tool setting operation records the tool setting values, and measures the difference of the tool on the tool holder 5 for fine adjustment, so that the replaced tool can be used directly without re-setting the tool. The entire system greatly improves the convenience of tool replacement, reduces the labor intensity of the operator, improves production efficiency, and ensures the quality and precision of the processed products.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick-change tool rest, comprising a four-station tool rest (1) for a CNC lathe, characterized in that: A pressing block (2) is clamped on a four-station tool rest (1) of a numerically controlled lathe, and a stop block (3) is further arranged on one end of the pressing block, wherein the stop block (3) and the pressing block (2) are arranged perpendicular to each other, and the stop block (3) and the pressing block (2) are arranged in an integral molding; A connecting seat (4) is fixedly mounted on one side surface of the pressing block (2), wherein the connecting seat (4) and the pressing block (2) are integrally formed; A tool holder (5) is detachably connected to the connecting seat (4), one end of which is in contact with the stop block (3), and a matching CNC lathe tool is installed in the tool holder (5); The centering block (6) is arranged on a side surface of the pressing block (2) away from the stop block (3), and is used to limit the knife support (5) to between the stop block (3) and the centering block (6), and is connected to the pressing block (2).

2. The quick-change tool holder according to claim 1, characterized in that: The overall cross-section of the connecting seat (4) is T-shaped, and a connecting groove (7) matching the shape of the connecting seat (4) is processed on the surface of the side of the knife support (5) close to the pressing block (2), wherein the connecting seat (4) can be connected to the surface of the pressing block (2) through the connecting groove (7) and the mortise and tenon joints of the connecting seat (4).

3. The quick-change tool holder according to claim 1, characterized in that: A first fastener (8) is arranged on the surface of the stop block (3); the stop block (3) and the knife holder (5) are connected to each other via the first fastener (8); a first fastening groove (9) adapted to the first fastener (8) is arranged on the knife holder (5); and the other end of the first fastener (8) can be placed in the first fastening groove (9).

4. The quick-change tool holder according to claim 1, characterized in that: The connecting seat (4) is embedded with an inner support sleeve (10), and the centering block (6) is provided with an inner support bolt (11), wherein one end of the inner support bolt (11) is connected to the inner support sleeve (10), and the centering block (6) can be connected to the surface of the connecting seat (4) through the inner support bolt (11) and the inner support sleeve (10).

5. The quick-change tool holder according to claim 1, characterized in that: The centering block (6) is provided with a second fastener (12), the centering block (6) and the knife holder (5) are connected to each other via the second fastener (12), the knife holder (5) is provided with a second fastening groove (13) adapted to the second fastener (12), and the other end of the second fastener (12) can be placed in the second fastening groove (13).

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