Quick centering replaceable blade T-slot milling cutter

Abstract

This invention relates to the field of T-slot milling cutter head technology, and discloses a quick-alignment, interchangeable-blade T-slot milling cutter head, including a mounting plate. Each side of the mounting plate is fixedly connected to a tool holder. One side of the tool holder has a mounting plane perpendicular to the side of the mounting plate. A frustum-shaped alignment groove is formed on the mounting plane. A frustum-shaped alignment block is slidably connected in the alignment groove. A cylindrical insert is fixedly connected to the side of the alignment block away from the tool holder. Two mounting slots are formed on the side wall of each alignment block. Several air bladders are fixedly connected to the inner bottom wall of each mounting slot. A sealing plate is fixedly connected between the tops of the air bladders. The sealing plate is slidably connected to the side wall of the mounting slot. An mounting plate is fixedly connected to the opening of each mounting slot. Lubricating oil is filled between the sealing plate and the mounting plate. This quick-alignment, interchangeable-blade T-slot milling cutter head solves the problem of the long-term dry friction at the connection between the insert and the tool holder, which leads to increased wear and decreased alignment accuracy.

Description

Technical Field

[0001] This invention relates to the field of T-slot milling cutter head technology, specifically a quick-centering, interchangeable-blade T-slot milling cutter head. Background Technology

[0002] A T-slot milling cutter head is a rotary cutting tool used to machine T-slots. It typically consists of a tool holder, a cutter head, and inserts mounted on the cutter head. It mills the workpiece by rotating at high speed to form a groove structure with a "T" shaped cross section. T-slot milling cutter heads are mainly used in milling machines, machining centers and other mechanical equipment to process T-slots on machine tool worktables and fixture platforms for installing T-bolts or positioning fixtures. They are generally used in conjunction with end mills. The working principle is as follows: the end mill first processes a straight groove on the workpiece, and then the T-slot milling cutter head widens the bottom of the straight groove to form a complete T-slot. Existing T-slot milling cutter heads typically use a planar or conical surface fit between the insert and the tool holder. During high-speed cutting, severe friction occurs at the connection between the tool holder and the insert, leading to heat accumulation and increased wear. Due to the lack of an effective lubrication structure, the mating surfaces are in a state of dry friction for a long time, which not only accelerates the wear of the insert but also affects the centering accuracy due to thermal expansion, thus reducing the machining quality. To address this, we propose a quick-centering, interchangeable-blade T-slot milling cutter head. Summary of the Invention

[0003] The purpose of this invention is to provide a quick-centering, replaceable-blade T-slot milling cutter head to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a quick-aligning, replaceable-blade T-slot milling cutter disc, comprising a mounting disc, the mounting disc having an octagonal structure, each side of the mounting disc being fixedly connected to a tool holder, one side of the tool holder having a mounting plane perpendicular to the side of the mounting disc, the mounting plane having a frustum-shaped alignment groove, a frustum-shaped alignment block being slidably connected in the alignment groove, and a cylindrical cutting blade being fixedly connected to the side of the alignment block away from the tool holder; Each of the centering blocks has two mounting slots on its sidewalls. Several airbags are fixedly connected to the inner bottom wall of each mounting slot. A sealing plate is fixedly connected between the tops of the airbags. The sealing plate is slidably connected to the sidewall of the mounting slot. A mounting plate is fixedly connected to the opening of each mounting slot. Several evenly distributed conical holes are provided on the mounting plate. Lubricating oil is filled between the sealing plate and the mounting plate.

[0005] Preferably, the side of the tool holder away from the mounting plane is provided with a guide slope, and a threaded hole communicating with the centering groove is provided on the guide slope.

[0006] Preferably, the inner wall of the centering groove is provided with a plurality of flow guide grooves, and the guide inclined surface is provided with a plurality of exhaust holes communicating with the flow guide grooves. A baffle is fixedly connected to one end of the flow guide groove near the mounting plane, and a plurality of turbulence holes are provided on the baffle.

[0007] Preferably, the mounting plane has a plurality of evenly distributed limiting grooves, which are evenly distributed around the centering groove.

[0008] Preferably, each of the limiting grooves is fixedly connected with a spring, one end of the spring extends out of the limiting groove, and the end of the spring away from the limiting groove contacts one side of the blade.

[0009] Preferably, the blade has several evenly distributed heat dissipation grooves on the side near the centering block, and several heat dissipation fins are fixedly connected in the heat dissipation grooves.

[0010] Preferably, both the centering block and the blade are provided with interconnected positioning holes, and a fastening bolt is slidably connected in the positioning hole. The threaded end of the fastening bolt passes through the positioning hole and is threadedly connected to the threaded hole.

[0011] Preferably, each sidewall of the centering block is fitted with two sponge pads, and each sponge pad is located between the guide groove and the mounting groove on the same side.

[0012] Preferably, sealing rings are fixedly connected to both the top and bottom of the airbag, and the sealing rings at both ends of the top and bottom of the airbag are fixedly connected to the bottom of the sealing plate and the bottom wall of the mounting groove, respectively.

[0013] Preferably, a knife handle is fixedly connected to the top of the mounting plate, and the diameter of the knife handle is smaller than the diameter of the mounting plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention incorporates an airbag, a sealing plate, and a conical hole structure within the mounting groove, and fills the space between the airbag and the sealing plate with lubricating oil. When the blade generates heat during high-speed cutting, the heat is conducted to the airbag on the centering block. The gas inside the airbag expands due to heat, pushing the sealing plate to slide and precisely squeezing the lubricating oil through the conical hole between the mating surfaces of the centering block and the centering groove, forming a lubricating oil film. This effectively reduces the coefficient of friction between the centering groove and the centering block, significantly reducing wear and solving the problem in the prior art where the connection between the blade and the tool holder is in a state of dry friction for a long time, leading to increased wear and decreased centering accuracy. This invention creates a flow guide groove on the inner wall of the centering slot, sets a baffle with a turbulence hole at the inlet end of the flow guide groove, and opens an exhaust hole on the guide slope of the tool holder that communicates with the flow guide groove. When the blade rotates at high speed, a local negative pressure zone is formed in the tiny gap between the blade and the mounting plane. After the outside cold air is drawn in, it is divided into multiple fine jets through the turbulence hole, so that the airflow changes from a laminar flow state to a turbulent flow state after entering the flow guide groove. This significantly improves the heat exchange efficiency with the centering block and the inner wall of the flow guide groove. At the same time, since the exhaust hole is located on the guide slope, the hot air is thrown out more smoothly by centrifugal force when the airflow flows out along the slope. This not only improves the exhaust efficiency, but also effectively prevents chips or dust from accumulating and clogging at the opening, ensuring the long-term unobstructed heat dissipation channel. This invention employs a frustum-shaped centering block and a centering groove. When the airbag expands due to heat, it forces lubricating oil out of the conical hole. Under pressure, the lubricating oil flows along the four inclined surfaces of the centering block and gradually fills the four corner areas between the centering block and the centering groove under gravity and capillary action. A stable oil film accumulates at the corners, effectively reducing friction and wear in the edge contact area. At the same time, the sponge pad placed between the guide groove and the mounting groove can absorb and retain excess lubricating oil overflowing from the corner areas, preventing it from entering the guide groove and contaminating the heat dissipation channel, thus ensuring the long-term smooth operation of the heat dissipation system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation disk structure of the present invention; Figure 3 This is a schematic diagram of the tool holder and centering groove structure of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the tool holder of the present invention; Figure 5 This is a schematic diagram of the blade structure of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the middle block of the present invention; Figure 7 For the present invention Figure 3 A magnified structural diagram of area A is shown below; Figure 8 For the present invention Figure 6 The diagram shows an enlarged view of area B. Figure 9 This is a schematic cross-sectional view of the mounting plate of the present invention.

[0016] In the diagram: 1. Mounting plate; 11. Tool holder; 2. Tool holder; 21. Mounting plane; 22. Guide slope; 23. Centering groove; 24. Threaded hole; 25. Limiting groove; 3. Guide groove; 31. Exhaust hole; 32. Baffle; 33. Baffle hole; 4. Centering block; 41. Mounting groove; 42. Sponge pad; 5. Airbag; 51. Sealing ring; 52. Sealing plate; 53. Mounting plate; 54. Tapered hole; 6. Spring; 7. Blade; 71. Heat dissipation groove; 72. Heat sink; 8. Positioning hole; 81. Fastening bolt. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-9 This invention provides a technical solution: a quick-aligning, replaceable-blade T-slot milling cutter disc, comprising a mounting disc 1, the mounting disc 1 being an octagonal structure, with a tool holder 2 fixedly connected to each side of the mounting disc 1; a mounting plane 21 perpendicular to the side of the mounting disc 1 is provided on one side of the tool holder 2; a frustum-shaped alignment groove 23 is formed on the mounting plane 21; a frustum-shaped alignment block 4 is slidably connected within the alignment groove 23; and a cylindrical... The blade 7 has a guide slope 22 on the side of the blade holder 2 away from the mounting plane 21. The guide slope 22 has a threaded hole 24 that communicates with the centering groove 23. The centering block 4 and the blade 7 both have positioning holes 8 that communicate with each other. A fastening bolt 81 is slidably connected in the positioning hole 8. The threaded end of the fastening bolt 81 passes through the positioning hole 8 and is threadedly connected to the threaded hole 24. A blade handle 11 is fixedly connected to the top of the mounting plate 1. The diameter of the blade handle 11 is smaller than the diameter of the mounting plate 1.

[0019] Furthermore, when using this milling cutter head, the centering block 4 on the insert 7 is inserted into the centering groove 23 of the mounting plate 1. At this time, the centering block 4 and the centering groove 23 cooperate with each other to complete the docking work. Then, the fastening bolt 81 is passed through the positioning hole 8 and finally screwed into the threaded hole 24. As the fastening bolt 81 is tightened, the frustum-shaped centering block 4 and the centering groove 23 gradually fit tightly together. Utilizing the self-centering property of the frustum structure, the insert 7 automatically completes precise centering during the locking process. Afterwards, the tool holder 11 is mounted on the external drive mechanism. Then, place the grooved workpiece on one side of the milling cutter head. Note that the groove of the workpiece must be larger than the diameter of the cutter shank 11. Then, start the drive mechanism to drive the mounting plate 1 to rotate. The high-speed rotating blade 7 will groove the bottom of the groove of the workpiece and form a T-groove. When the side of the blade 7 away from the mounting plate 1 is worn due to the grooving work, remove the fastening bolt 81, replace the blade 7 with a new one, and continue to use the fastening bolt 81 to fix the blade 7. The drive mechanism is a mature existing technology, so it will not be described in detail in the instruction manual.

[0020] Combined with appendix Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, each side wall of the centering block 4 has two mounting grooves 41. Several airbags 5 are fixedly connected to the inner bottom wall of each mounting groove 41. A sealing plate 52 is fixedly connected between the tops of each airbag 5. The sealing plate 52 is slidably connected to the side wall of the mounting groove 41. A mounting plate 53 is fixedly connected to the opening of each mounting groove 41. Several evenly distributed conical holes 54 are provided on the mounting plate 53. Lubricating oil is filled between the sealing plate 52 and the mounting plate 53. Two sponge pads 42 are fitted and fixedly connected to each side wall of the centering block 4. Each sponge pad 42 is located between the guide groove 3 and the mounting groove 41 on the same side. Sealing rings 51 are fixedly connected to the top and bottom of each airbag 5. The sealing rings 51 at both ends of the top and bottom of the airbag 5 are fixedly connected to the bottom of the sealing plate 52 and the inner bottom wall of the mounting groove 41, respectively. The sealing rings 51 provide sealing protection for both ends of the airbag 5, preventing gas from escaping from the airbag 5.

[0021] Furthermore, during the grooving process of the milling cutter, the intense friction between the insert 7 and the workpiece generates a large amount of heat. This heat is rapidly conducted through the insert 7 to the centering block 4, which is fixedly connected to it. Based on the principle of thermal expansion and contraction, the gas medium inside the airbag 5 in the mounting groove 41 expands in volume after being heated, driving the airbag 5 to expand. At this time, the expanded airbag 5 pushes the sealing plate 52 to slide along the inner wall of the mounting groove 41 towards the opening. The movement of the sealing plate 52 will apply pressure to the lubricating oil between it and the mounting plate 53, forcing the lubricating oil to be squeezed out through the tapered hole 54 opened on the mounting plate 53. At this time, utilizing the capillary action and unidirectional flow characteristics of the tapered hole 54, the lubricating oil is accurately delivered and filled into the microscopic gap between the mating surfaces of the centering block 4 and the centering groove 23. The formed lubricating oil film can effectively reduce... The low coefficient of friction between the centering block 4 and the centering groove 23 significantly reduces wear on the contact surface, thereby extending the service life of the centering block 4. Secondly, the flow and filling of lubricating oil can remove some of the heat generated by friction, playing an auxiliary role in heat dissipation and further suppressing the temperature rise of the mating surfaces of the centering groove 23 and the centering block 4, forming a virtuous cycle. During the grooving process, the sponge pad 42 located between the guide groove 3 and the mounting groove 41 can absorb and retain some of the lubricating oil. When there is a small amount of excess lubricating oil between the mating surfaces of the centering block 4 and the centering groove 23, or when the lubricating oil overflows from the gap between the mating surfaces of the centering block 4 and the centering groove 23 due to temperature changes, the sponge pad 42 can absorb and retain this part of the lubricating oil in time, preventing this part of the lubricating oil from entering the guide groove 3 and affecting the smooth flow of heat dissipation airflow.

[0022] Combined with appendix Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the inner wall of the centering groove 23 is provided with several guide grooves 3, and the guide inclined surface 22 is provided with several exhaust holes 31 that communicate with the guide grooves 3. A baffle 32 is fixedly connected to one end of the guide groove 3 near the mounting plane 21. Several turbulence holes 33 are provided on the baffle 32. A small gap is provided between the blade 7 and the mounting plane 21. Several evenly distributed heat dissipation grooves 71 are provided on the side of the blade 7 near the centering block 4. Several heat dissipation fins 72 are fixedly connected in the heat dissipation grooves 71.

[0023] Furthermore, when the blade 7 performs high-speed cutting, the heat generated by its body is first conducted to the heat sink 72 inside the heat dissipation groove 71. According to the principle of thermal convection, the heat exchange between the blade 7 and the surrounding air is proportional to the contact area between the blade 7 and the air. The design of the heat sink 72 greatly increases the contact area between the blade 7 and the air, thereby enabling the heat inside the blade 7 to be transferred to the surrounding air more efficiently, thus initially cooling the blade 7. At the same time, the high-speed rotation of the blade 7 creates a local negative pressure zone at the tiny heat dissipation gap between it and the mounting plane 21. Under the suction effect of this negative pressure, cold air from the outside is actively drawn into the gap. The drawn-in airflow first passes through the turbulence holes 33 on the baffle 32. During this process, the turbulence holes 33 can effectively block large particles of impurities such as chips and dust from entering the guide groove 3, playing a filtering and protection role. At the same time, the turbulence holes 33 divide a concentrated airflow into multiple fine jets. After entering the guide groove 3, the jets interfere with and rub against each other, thus changing the airflow from laminar to turbulent. According to the principle of heat transfer, the convective heat transfer coefficient between the gas in the turbulent state and the centering block 4 and the inner wall of the guide groove 3 is much higher than that in the laminar state, which significantly improves the heat transfer efficiency. The high-speed airflow passes through the guide groove 3, carries away the heat from the centering block 4 and the tool holder 2, and finally exits from the exhaust hole 31 on the guide slope 22. Since the exhaust hole 31 is located on the guide slope 22, when the airflow flows out along the guide slope 22 during the rotation of the tool disc, it will generate a tangential velocity component. Using centrifugal force, the hot air is thrown out more smoothly, which not only improves the exhaust efficiency, but also effectively prevents chips or dust from accumulating and clogging at the orifice, thus ensuring that the heat dissipation channel is unobstructed for a long time. In addition, the heat dissipation groove 71 opened on the blade 7 increases the gap volume between it and the mounting plane 21 to a certain extent, which helps more air to be drawn in and further improves the heat dissipation efficiency.

[0024] Combined with appendix Figure 3 , Figure 4 and Figure 7 As shown, a plurality of evenly distributed limiting grooves 25 are provided on the mounting plane 21. The limiting grooves 25 are evenly distributed around the centering groove 23. A spring 6 is fixedly connected in each limiting groove 25. One end of the spring 6 extends out of the limiting groove 25, and the end of the spring 6 away from the limiting groove 25 contacts one side of the blade 7.

[0025] Furthermore, during the installation of the insert 7, as the fastening bolt 81 is tightened, the insert 7 gradually approaches the mounting plane 21 and compresses the spring 6, allowing the spring 6 to store elastic potential energy. When the insert 7 is finally fully locked by the fastening bolt 81, the compressed spring 6 generates a continuous elastic restoring force opposite to the tension of the fastening bolt 81, pushing the insert 7 in the opposite direction. According to the mechanical preload principle, the reverse thrust provided by the spring 6 is always present throughout the entire working process. It works together with the locking force of the fastening bolt 81 to form a continuous preload state. When the machine tool vibrates, causing a momentary fluctuation or slight relaxation in the locking force of the fastening bolt 81, the elastic energy stored in the spring 6 is immediately released, compensating for the loss of locking force and eliminating the micro gaps that may be caused by vibration. This ensures that the insert 7 always maintains a tight fit with the positioning surfaces of the centering groove 23 and the centering block 4. This significantly improves the vibration resistance and connection rigidity of the insert 7 under high-speed heavy-load cutting conditions, thereby ensuring the stability and accuracy of machining and making the installation of the insert 7 more secure and reliable.

[0026] Working principle: First, insert the blade 7 with centering block 4 into the centering groove 23 on the blade holder 2. The initial positioning of the blade 7 is completed by the cooperation of the truncated pyramid structure of the centering block 4 and the centering groove 23. Then, the fastening bolt 81 is passed through the positioning hole 8 and screwed into the threaded hole 24. As the fastening bolt 81 is gradually tightened, the truncated pyramid-shaped centering block 4 and the centering groove 23 gradually fit tightly together. Utilizing the self-centering characteristic of the truncated pyramid structure, the blade 7 automatically completes precise centering during the locking process. During the locking process, the blade 7 simultaneously compresses the spring 6 in the limiting groove 25, so that the spring 6 stores elastic potential energy and forms a continuous preload force opposite to the tension of the fastening bolt 81. After the blade 7 is installed, the tool holder 11 is installed on the external drive mechanism, and the workpiece to be processed is placed on one side of the milling cutter head. Then the drive mechanism is started to drive the mounting plate 1 to rotate at high speed. The blade 7 is used to cut the bottom of the groove of the workpiece to process a T-groove. During the cutting process, the blade 7 and the workpiece rub intensely together, generating a large amount of heat. This heat is conducted to the air bladder 5 on the centering block 4. The gas medium inside the air bladder 5 expands due to the heat, pushing the sealing plate 52 to slide along the inner wall of the mounting groove 41 toward the opening. This applies pressure to the lubricating oil between the sealing plate 52 and the mounting plate 53, forcing the lubricating oil to be squeezed out through the tapered hole 54 on the mounting plate 53. Utilizing the capillary action and unidirectional flow characteristics of the tapered hole 54, the lubricating oil is precisely delivered to the mating surfaces of the centering block 4 and the centering groove 23, forming a lubricating oil film. This effectively reduces the coefficient of friction and wear, while also carrying away some heat to assist in heat dissipation. At the same time, the sponge pad 42 located between the guide groove 3 and the mounting groove 41 can absorb and retain some of the lubricating oil. When there is a small amount of excess lubricating oil between the mating surfaces of the centering block 4 and the centering groove 23, or when lubricating oil overflows from the gap between the mating surfaces of the centering block 4 and the centering groove 23 due to temperature changes, the sponge pad 42 can absorb and retain this portion of lubricating oil in a timely manner. Meanwhile, the heat generated during cutting is also conducted to the heat sink 72 on the blade 7. The heat sink 72 increases the contact area with the air, efficiently transferring the heat inside the blade 7 to the surrounding air, thus achieving initial cooling of the blade 7. The high-speed rotation of the blade 7 creates a local negative pressure zone in the tiny gap between it and the mounting plane 21. Under this negative pressure suction, cold air from the outside is actively drawn into the gap. The airflow first passes through the turbulence holes 33 on the baffle 32. The turbulence holes 33, on the one hand, prevent large particles such as chips and dust from entering the guide groove 3, and on the other hand, deflect... The concentrated airflow is divided into multiple fine jets, causing the airflow to interfere with each other and rub against each other after entering the guide groove 3, changing from a laminar flow state to a turbulent flow state. This significantly improves the heat exchange efficiency with the centering block 4 and the inner wall of the guide groove 3. The high-speed airflow passes through the guide groove 3, carrying away the heat from the centering block 4 and the cutter holder 2, and finally exits from the exhaust hole 31 on the guide slope 22. Since the exhaust hole 31 is located on the guide slope 22, the airflow generates a tangential velocity when it flows out along the slope during the rotation of the cutter head. Centrifugal force is used to throw the hot air out more smoothly, improving the exhaust efficiency and preventing the orifice from being blocked. Throughout the cutting process, the elastic potential energy stored in spring 6 continuously generates a thrust opposite to the tension of fastening bolt 81, which, together with the locking force of fastening bolt 81, forms a continuous preload. When machine tool vibration causes momentary fluctuations or slight relaxation in the locking force of fastening bolt 81, the elastic energy stored in spring 6 is immediately released to compensate for the loss of locking force, eliminate micro gaps that may be caused by vibration, and ensure that the cutting tool 7 always maintains a tight fit with the positioning surfaces of centering groove 23 and centering block 4, thus ensuring machining stability and accuracy. Finally, when the side of the blade 7 away from the mounting plate 1 wears down due to cutting work, simply remove the fastening bolt 81, replace the new blade 7, and tighten it again to continue using it.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-aligning, replaceable-blade T-slot milling cutter disc, comprising a mounting disc (1), the mounting disc (1) having an octagonal structure, each side of the mounting disc (1) being fixedly connected to a tool holder (2), and one side of the tool holder (2) having a mounting plane (21) perpendicular to the side of the mounting disc (1), characterized in that: A truncated quadrangular centering groove (23) is provided on the mounting plane (21). A truncated quadrangular centering block (4) is slidably connected in the centering groove (23). A cylindrical blade (7) is fixedly connected to the side of the centering block (4) away from the blade holder (2). Two mounting grooves (41) are provided on the side walls of the centering block (4). Several airbags (5) are fixedly connected to the inner bottom wall of the mounting groove (41). A sealing plate (52) is fixedly connected between the tops of the airbags (5). The sealing plate (52) is slidably connected to the side wall of the mounting groove (41). A mounting plate (53) is fixedly connected to the opening of the mounting groove (41). Several evenly distributed conical holes (54) are provided on the mounting plate (53). Lubricating oil is filled between the sealing plate (52) and the mounting plate (53).

2. The quick-centering, interchangeable-blade T-slot milling cutter head according to claim 1, characterized in that: The tool holder (2) has a guide slope (22) on the side away from the mounting plane (21), and the guide slope (22) has a threaded hole (24) that communicates with the centering groove (23).

3. The quick-centering, interchangeable-blade T-slot milling cutter head according to claim 2, characterized in that: The inner wall of the centering groove (23) is provided with several guide grooves (3), and the guide slope (22) is provided with several exhaust holes (31) that are connected to the guide grooves (3). A baffle (32) is fixedly connected to one end of the guide groove (3) near the mounting plane (21), and a number of turbulence holes (33) are provided on the baffle (32).

4. The quick-centering, interchangeable-blade T-slot milling cutter head according to claim 1, characterized in that: The mounting plane (21) has several evenly distributed limiting grooves (25), which are evenly distributed around the centering groove (23).

5. A quick-centering, interchangeable-blade T-slot milling cutter head according to claim 4, characterized in that: Each of the limiting grooves (25) is fixedly connected with a spring (6). One end of the spring (6) extends out of the limiting groove (25), and the end of the spring (6) away from the limiting groove (25) contacts one side of the blade (7).

6. The quick-centering, interchangeable-blade T-slot milling cutter head according to claim 1, characterized in that: The blade (7) has several evenly distributed heat dissipation grooves (71) on one side near the centering block (4), and several heat dissipation fins (72) are fixedly connected in the heat dissipation grooves (71).

7. A quick-centering, interchangeable-blade T-slot milling cutter head according to claim 2, characterized in that: The centering block (4) and the blade (7) are provided with interconnected positioning holes (8). A fastening bolt (81) is slidably connected in the positioning hole (8). The threaded end of the fastening bolt (81) passes through the positioning hole (8) and is threadedly connected to the threaded hole (24).

8. A quick-centering, interchangeable-blade T-slot milling cutter head according to claim 3, characterized in that: Two sponge pads (42) are fitted and fixedly connected to each side wall of the centering block (4), and each sponge pad (42) is located between the guide groove (3) and the mounting groove (41) on the same side.

9. A quick-centering, interchangeable-blade T-slot milling cutter head according to claim 1, characterized in that: The top and bottom of the airbag (5) are fixedly connected with sealing rings (51), and the sealing rings (51) at both ends of the top and bottom of the airbag (5) are fixedly connected to the bottom of the sealing plate (52) and the inner bottom wall of the mounting groove (41), respectively.

10. A quick-centering, interchangeable-blade T-slot milling cutter head according to claim 1, characterized in that: A knife handle (11) is fixedly connected to the top of the mounting plate (1), and the diameter of the knife handle (11) is smaller than the diameter of the mounting plate (1).

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