Modularized milling cutter with adjustable blade length
By using a cross-distributed fixing plate and limiting seat design, and utilizing the centrifugal force of the milling cutter to throw it into the dust collection tank, the problem of small particles generated by the vibration of the modular milling cutter is solved, thereby improving stability and lifespan.
Patent Information
- Application Number
- CN202511697141.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-01-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the cutting process, the vibration of modular milling cutters generates tiny metal particles, which reduces the connection stability between the fixed tool holder and the mating tool holder, affecting the cutting quality and equipment life.
The design incorporates cross-distributed fixed plates A and B, utilizing the centrifugal force of the milling cutter to fling tiny particles into the dust collection trough. Combined with the sliding mechanism of the limiting seat and baffle, this achieves temporary storage and cleaning of particles, reducing wear and improving connection stability.
It effectively reduces the accumulation and wear of tiny metal particles, improves the connection stability and service life of modular milling cutters, and ensures a smooth cutting surface.
Smart Images
Figure CN121402684A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of modular end mill technology, specifically to a modular end mill with adjustable cutting length. Background Technology
[0002] Modular end mills are tool systems that decompose traditional integral end mills into multiple independent functional components. Through standardized interfaces, they combine tool holders and replaceable cutting tips to form a complete and flexible cutting tool. Due to their combinable nature, modular end mills can add one or more additional tool holders to the bottom of the tool holder, thereby increasing the length of the cutting edge and enabling them to adapt to cutting work of different depths. Modular end mills, with their unparalleled flexibility and economy, have gradually replaced traditional one-piece end mills in modern manufacturing industries characterized by high variety, small batches, and fast pace. Modular end mills represent an important direction in the development of modern cutting tool technology, signifying a shift from "single tools" to "tool solution systems." By sacrificing negligible rigidity, they achieve unparalleled flexibility, economy, and efficiency. For modern factories pursuing efficient production and cost control, adopting modular tool systems has become an inevitable trend. In the use of modular end mills, which are assembled by connecting multiple tool holders, the cutter body vibrates during cutting. This vibration causes significant friction between the fixed tool holder and the mating tool holder, resulting in the formation of tiny metal particles. These particles remain between the fixed and mating tool holders for extended periods, continuously causing wear due to the vibration. As this wear increases, it affects the connection stability between the fixed and mating tool holders. To address this issue, we propose a modular end mill with an adjustable cutting length. Summary of the Invention
[0003] The purpose of this invention is to provide a modular end mill with adjustable cutting length to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a modular end mill with adjustable cutting length, comprising a cutter shank, a fixed cutter holder fixedly connected to the bottom of the cutter shank, a docking cutter holder docked to the bottom of the fixed cutter holder, a mounting plate fixedly connected to the top of the docking cutter holder, a mounting groove formed on the top of the mounting plate, an annular dust collection groove formed near the edge of the inner bottom wall of the mounting groove, and several evenly distributed fixed plates A and B fixedly connected to the mounting plate respectively, each fixed plate A and fixed plate B being interleaved, the height of fixed plate B being lower than that of fixed plate A, a gap for dust discharge being provided between adjacent fixed plates A and fixed plates B, a dust discharge groove being formed on the top side of fixed plate A near the edge of the mounting plate, and a top arc surface inclined to both sides being provided on the top of fixed plate B.
[0005] Preferably, the inner bottom wall of the mounting groove is fixedly connected with a plurality of annularly distributed limiting rods, and the limiting rods are vertically slidably connected with annular baffles, and the inner wall of the mounting groove is fixedly connected with annular limiting plates.
[0006] Preferably, the outer diameter edge of the baffle is located above the inner diameter edge of the limiting plate, and the top of the limiting plate is provided with a guide slope inclined towards the baffle. Both the baffle and the limiting plate are located above the dust collection groove.
[0007] Preferably, a plurality of annularly distributed sliding grooves are provided on the bottom wall of the mounting groove, and each sliding groove is slidably connected to a limiting seat, and a spring is fixedly connected between the side of the limiting seat away from the baffle and the inner wall of the sliding groove.
[0008] Preferably, the top of the limiting seat is provided with an extrusion slope that is inclined toward the baffle, the lowest point of the extrusion slope is flush with the top opening of the chute, and the side of the limiting seat away from the baffle is provided with an arc surface.
[0009] Preferably, a sealing plate A is fixedly connected to the inner wall of the slide groove on the side away from the limiting rod, and a sealing plate B is fixedly connected to the side of the limiting seat away from the limiting rod. The sealing plate B is located above the sealing plate A, and the bottom of the sealing plate B is slidably connected to the top of the sealing plate A.
[0010] Preferably, the top of the sealing plate A is flush with the top opening of the chute, and the side of the sealing plate B away from the limiting seat has a horizontal arc surface.
[0011] Preferably, two dust exhaust pipes are fixedly connected to one side of the mounting plate, and both dust exhaust pipes are interconnected with the dust collection tank. The end of each dust exhaust pipe away from the mounting plate is provided with a sealing plug.
[0012] Preferably, a plurality of evenly distributed cutting edges A are fixedly connected to the side of the fixed blade holder, and a mating hole is provided at the bottom of the fixed blade holder.
[0013] Preferably, a plurality of evenly distributed cutting edges B are fixedly connected to the side of the docking tool holder, a docking seat that fits into the docking hole is provided at the middle position of the inner bottom wall of the mounting groove, a fastening bolt passes through the bottom of the docking tool holder, the top of the fastening bolt is threaded, and the top of the fastening bolt is threadedly connected to the docking hole.
[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a mounting plate on the tool holder, and mounting plates A and B of different heights on the mounting plate. Fixing plate A contacts the bottom of the tool holder, while fixing plate B does not. By reducing the contact area with the tool holder, the invention reduces the amount of microparticles generated between the tool holder and the tool holder due to vibration during milling cutter operation. Simultaneously, when microparticles are generated between fixing plate A and the bottom of the tool holder due to vibration, the centrifugal force generated by the high-speed rotation of the milling cutter can throw these microparticles towards the dust discharge groove. Once the microparticles enter the dust discharge groove, they will flow into the mounting groove, preventing them from remaining between fixing plate A and the tool holder for extended periods, thus avoiding excessive wear on the bottom of the tool holder and affecting the stability between the tool holder and the tool holder. In this invention, after tiny metal particles enter the mounting groove, the centrifugal force generated by the milling cutter during operation acts on the limiting seat. During its movement, the limiting seat pushes up the baffle by squeezing the inclined surface, exposing the dust collection groove. The tiny metal particles in the mounting groove are then thrown into the dust collection groove by the centrifugal force and temporarily stored there. When the milling cutter stops working, the spring's reaction force pulls the limiting seat back to its original position. The baffle, now unsupported by the limiting seat, descends along the limiting rod and covers the dust collection groove, preventing the tiny metal particles from re-entering the mounting groove. This effectively improves the device's ability to collect tiny metal particles. 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 bottom structure of the fixed tool holder of the present invention; Figure 3 This is a schematic diagram of the top structure of the docking tool holder of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the fixed tool holder of the present invention; Figure 5 This is a schematic diagram of the installation disk structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the mounting slot of the present invention; Figure 7 This is a schematic diagram of the dust collection tank structure of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the mounting plate of the present invention; Figure 9 For the present invention Figure 8 The diagram shows an enlarged view of area A.
[0016] In the diagram: 1. Tool holder; 2. Fixed tool holder; 21. Blade A; 22. Docking hole; 3. Docking tool holder; 31. Blade B; 32. Fastening bolt; 4. Mounting plate; 41. Mounting groove; 42. Dust collection groove; 43. Fixed plate A; 44. Dust discharge groove; 45. Fixed plate B; 5. Limiting rod; 51. Baffle; 52. Limiting plate; 53. Guide slope; 6. Slide groove; 61. Limiting seat; 62. Extrusion slope; 63. Spring; 7. Sealing plate A; 71. Sealing plate B; 8. Dust discharge pipe; 81. Sealing plug. 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 modular end mill with adjustable cutting edge length, comprising a cutter shank 1, a fixed cutter holder 2 fixedly connected to the bottom of the cutter shank 1, a docking cutter holder 3 mated to the bottom of the fixed cutter holder 2, a mounting plate 4 fixedly connected to the top of the docking cutter holder 3, a plurality of evenly distributed cutting edges A21 fixedly connected to the side of the fixed cutter holder 2, a docking hole 22 opened at the bottom of the fixed cutter holder 2, a plurality of evenly distributed cutting edges B31 fixedly connected to the side of the docking cutter holder 3, and a mounting groove 41 with a centrally located... The tool holder 3 is provided with a mating seat that fits into the mating hole 22. A fastening bolt 32 passes through the bottom of the tool holder 3. The top of the fastening bolt 32 is threaded and threaded to the mating hole 22. The mating hole 22 is provided with a threaded hole that mates with the thread of the fastening bolt 32. Both the tool holder 3 and the mating seat are provided with holes for the fastening bolt 32 to pass through, so that the fastening bolt 32 can pass through the tool holder 3 and the mating seat and mate with the threaded hole in the mating hole 22 of the tool holder 2.
[0019] Furthermore, during use, after determining the cutting depth, a specified number of docking tool holders 3 are docked with the fixed tool holder 2, and it is ensured that the docking seat of the mounting plate 4 is properly aligned with the docking hole 22 of the fixed tool holder 2. Then, the docking tool holders 3 and the fixed tool holder 2 are fixed with fastening bolts 32 of appropriate length. After that, the tool bar 1 is connected to the external machine body. The drive mechanism inside the external machine body can drive the tool bar 1, the fixed tool holder 2 and the docking tool holder 3 to rotate at high speed, thereby cutting the workpiece. The top of the docking tool holder 3 is provided with the same number of grooves as the cutting edge A21 on the fixed tool holder 2, which are used to accommodate the bottom part of the cutting edge A21, thereby ensuring that the cutting edge A21 and the cutting edge B31 are in a seamless connection state during the cutting operation, ensuring that the cutting surface of the workpiece is a flat surface. Furthermore, the external body and its drive mechanism are existing technologies, and will not be elaborated on here.
[0020] Combined with appendix Figure 3 and Figure 5 As shown, the top of the mounting plate 4 is provided with a mounting groove 41, and the inner bottom wall of the mounting groove 41 is provided with an annular dust collection groove 42 near the edge. Several evenly distributed fixing plates A43 and fixing plates B45 are fixedly connected to the mounting plate 4. Each fixing plate A43 and fixing plate B45 is distributed in a cross pattern. The height of fixing plate B45 is lower than that of fixing plate A43. A gap for dust discharge is provided between adjacent fixing plates A43 and fixing plates B45. A dust discharge groove 44 is provided on the top side of the fixing plate A43 near the edge of the mounting plate 4. The top of the fixing plate B45 is provided with a top arc surface that slopes to both sides.
[0021] Furthermore, during the milling cutter's cutting operation, the design of fixed plates A43 and B45 with different heights ensures that fixed plate A43 fits snugly against the bottom of the fixed tool holder 2, thereby guaranteeing the connection stability between the docking tool holder 3 and the fixed tool holder 2. Meanwhile, fixed plate B45 is separated from the bottom of the fixed tool holder 2, reducing the contact area between it and the fixed tool holder 2. This reduces the number of tiny metal particles generated by vibration and collision between the fixed tool holder 2 and the docking tool holder 3 during milling cutter operation. When vibration causes the fixed tool holder 2 and fixed plate A43 to collide, the contact area between them decreases. When tiny metal particles are generated between 43, the centrifugal force generated by the high-speed rotation of the milling cutter causes these tiny metal particles to be flung towards the dust discharge groove 44. After the metal particles are flung into the dust discharge groove 44, they eventually fall into the mounting groove 41 due to the centrifugal force. Since there is also a gap between the fixing plate A43 and the fixing plate B45, some tiny metal particles will also enter the mounting groove 41 through this gap, which can reduce the wear of the fixed tool holder 2 and the fixing plate A43 when the tiny metal particles move.
[0022] Combined with appendix Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, a number of annularly distributed limiting rods 5 are fixedly connected to the inner bottom wall of the mounting groove 41. A ring-shaped baffle 51 is vertically slidably connected between the limiting rods 5. A damping plate is provided at the connection between the baffle 51 and the limiting rod 5. A ring-shaped limiting plate 52 is fixedly connected to the inner wall of the mounting groove 41. The outer diameter edge of the baffle 51 is located above the inner diameter edge of the limiting plate 52. A guide slope 53 inclined towards the baffle 51 is opened at the top of the limiting plate 52. Both the baffle 51 and the limiting plate 52 are located above the dust collection groove 42. A number of annularly distributed sliding grooves 6 are opened on the inner bottom wall of the mounting groove 41. A limiting seat 61 is slidably connected in each sliding groove 6. A spring 63 is fixedly connected between the side of the limiting seat 6 away from the baffle 51 and the inner wall of the sliding groove 6. A pressing slope 62 inclined towards the baffle 51 is provided at the top of the limiting seat 61. The lowest point of the pressing slope 62 is flush with the top opening of the sliding groove 6.
[0023] Furthermore, during the high-speed rotation of the milling cutter, its centrifugal force also acts on the limiting seat 61. Under the influence of this centrifugal force, the limiting seat 61 moves towards the baffle 51 and pushes the baffle 51 up through the pressing inclined surface 62. The baffle 51 then rises along the limiting rod 5. During this process, the limiting seat 61 stretches the spring 63. When the baffle 51 is raised, its covering effect on the dust collection groove 42 disappears. At this time, the tiny metal particles located in the mounting groove 41 are thrown into the dust collection groove 42 due to the centrifugal force. Once inside the dust collection groove 42, these tiny metal particles, still under the influence of centrifugal force, may be thrown out of the dust discharge groove 44. The limiting plate 52 on the inner wall of the mounting groove 41 can then block the tiny metal particles in the dust collection groove 42, preventing them from being discharged. To prevent tiny metal particles from being thrown out of the dust collection tank 42 due to centrifugal force, and to ensure that if any metal particles fall onto the upper surface of the baffle 51 during the lifting process, they will be thrown onto the limiting plate 52 by centrifugal force. Finally, when the milling cutter stops working, the centrifugal force disappears, the spring 63 begins to rebound, and the limiting seat 61 is reset. At this time, the supporting effect of the limiting seat 61 on the baffle 51 disappears, and the baffle 51 will slowly descend along the limiting rod 5. During the descent of the baffle 51, the tiny metal particles on the limiting plate 52 will fall into the dust collection tank 42 along the guide slope 53. When the limiting plate 52 returns to its original position, it will cover the dust collection tank 42 and work together with the limiting plate 52 to temporarily store the tiny metal particles in the dust collection tank 42.
[0024] Combined with appendix Figure 6 , Figure 7 and Figure 9As shown, the side of the limiting seat 61 away from the baffle 51 is provided with an arc surface, the inner wall of the slide groove 6 away from the limiting rod 5 is fixedly connected with a sealing plate A7, and the side of the limiting seat 61 away from the limiting rod 5 is fixedly connected with a sealing plate B71. The sealing plate B71 is located above the sealing plate A7, and the bottom of the sealing plate B71 is slidably connected to the top of the sealing plate A7. The top of the sealing plate A7 is flush with the top opening of the slide groove 6, and the side of the sealing plate B71 away from the limiting seat 61 is provided with a horizontal arc surface.
[0025] Furthermore, during the sliding of the limiting seat 61, it will drive the sealing plate B71 to move together. At this time, through the cooperation of the sealing plate B71 and the sealing plate A7, the slide groove 6 can be covered at all times, preventing small metal particles from entering the slide groove 6 and hindering the movement of the limiting seat 61. At the same time, since the top surface of the sealing plate A7 is flush with the top opening of the slide groove 6, there is no groove-like state between them. Even if subsequent metal particles fall on the sealing plate A7, they will be moved towards the dust collection groove 42 by centrifugal force and will not remain on the sealing plate A7. This avoids the problem of small metal particles remaining on the sealing plate A7 and causing the sealing plate B71 to be stuck when it moves with the limiting seat 61. Both the limiting seat 61 and the sealing plate B71 are provided with arc surfaces on the side away from the baffle 51. When the milling cutter rotates at high speed, its production When the centrifugal force acts on the tiny metal particles located in the mounting groove 41, these tiny metal particles will continue to move towards the dust collection groove 42 along the arc surface when they come into contact with the side of the limiting seat 61 and the sealing plate B71. This avoids the problem that the presence of the limiting seat 61 and the sealing plate B71 would obstruct the movement path of the tiny metal particles, preventing some tiny metal particles from entering the dust collection groove 42 smoothly. At the same time, since the lowest point of the extrusion slope 62 is flush with the top opening of the slide 6, under the action of centrifugal force, the side of the limiting seat 61 away from the spring 63 will fit against the inner wall of the slide 6. At this time, the limiting seat 61, together with the sealing plate A7 and the sealing plate B71, can completely cover the slide 6, keeping the slide 6 in a sealed state, ensuring that the tiny metal particles located in the mounting groove 41 will not enter the slide 6 during the movement under the action of centrifugal force.
[0026] Combined with appendix Figure 5 , Figure 6 and Figure 7 As shown, two dust exhaust pipes 8 are fixedly connected to one side of the mounting plate 4. Both dust exhaust pipes 8 are connected to the dust collection tank 42. Each end of the dust exhaust pipe 8 away from the mounting plate 4 is provided with a sealing plug 81.
[0027] Furthermore, after the cutting work is completed, the drive mechanism of the external machine body is turned off. At this time, the tool holder 1, the fixed tool holder 2, and the docking tool holder 3 stop rotating. After the docking tool holder 3 is removed from the fixed tool holder 2, the sealing plugs 81 on the two dust exhaust pipes 8 can be removed, and the external air pipe is connected to one of the dust exhaust pipes 8. At this time, an external fan is used to blow air into the dust collection tank 42 through the dust exhaust pipe 8. During this process, since the top of the dust collection tank 42 is covered by the baffle 51 and the limiting plate 52, the airflow will only flow along the inside of the dust collection tank 42 and finally be discharged from the other dust exhaust pipe 8. During this process, the airflow will carry the tiny metal particles in the dust collection tank 42 out of the dust exhaust pipe 8, thus completing the cleaning of the tiny metal particles in the dust collection tank 42.
[0028] Working principle: This milling cutter adopts a modular design, with the core consisting of a cutter shank 1, a fixed cutter holder 2, and a docking cutter holder 3. The fixed cutter holder 2 is fitted with the docking seat on the top of the mounting plate 4 through the docking hole 22 at the bottom, and is locked by the threaded fastening bolt 32, realizing quick assembly and disassembly of the cutter holder and adjustment of the cutting edge length. Users can extend the total cutting edge length by stacking different numbers of docking cutter holders 3 according to processing needs, adapting to different cutting depth scenarios. After assembly, the cutter shank 1 is connected to the external machine body, and the drive mechanism in the external machine body drives the cutter shank 1, fixed cutter holder 2, and docking cutter holder 3 to rotate at high speed, thereby performing cutting work on the workpiece. During milling, the high-speed rotating tool body generates a large number of tiny metal particles due to vibration. The design of the fixed plates A43 and B45, which are arranged in a cross and staggered manner, ensures the connection stability between the fixed tool holder 2 and the docking tool holder 3 by having the fixed plate A43 be higher and directly contact the bottom of the fixed tool holder 2. The fixed plate B45 be lower and separated from the bottom of the fixed tool holder 2 to reduce the contact area and reduce the contact range of vibration friction, thereby reducing the amount of particles generated from the source. When the fixed tool holder 2 and the fixed plate A43 generate particles due to vibration, the centrifugal force generated by the high-speed rotation of the milling cutter will throw the particles toward the dust discharge groove 44 on the edge of the fixed plate A43. The tiny metal particles enter the mounting groove 41 through the dust discharge groove 44, avoiding accumulation between the fixed plate A43 and the fixed tool holder 2. At the same time, the gap between the fixed plate A43 and the fixed plate B45 also provides an additional escape channel for some particles. When tiny metal particles enter the mounting groove 41, the centrifugal force generated by the high-speed rotation of the milling cutter will also act on the limiting seat 61, pushing it to move along the slide 6 towards the baffle 51 and stretching the spring 63. The pressing inclined surface 62 of the limiting seat 61 contacts the bottom of the baffle 51 and lifts it up. The baffle 51 slides upward along the limiting rod 5, exposing the dust collection groove 42 below. At this time, the tiny metal particles in the mounting groove 41 are thrown towards the dust collection groove 42 under the action of centrifugal force. When the tiny metal particles enter the dust collection groove 42, the limiting plate 52 located above the dust collection groove 42 will prevent the tiny metal particles from flying directly out of the dust collection groove 42. At the same time, during the process of the baffle 51 being lifted, if any metal particles fall on the upper surface of the baffle 51, they will be thrown onto the limiting plate 52 by the action of centrifugal force. Meanwhile, as the tiny metal particles move from the mounting groove 41 to the dust collection groove 42, the sealing plate B71 on one side of the slide 6 moves with the limiting seat 61 and cooperates with the sealing plate A7 to always cover the opening of the slide 6, preventing particles from entering the slide 6 and interfering with the movement of the limiting seat 61. The horizontal arc surface of the limiting seat 61 cooperates with the plane of the sealing plate B71 to further guide the tiny metal particles to move towards the dust collection groove 42, avoiding the tiny metal particles being blocked by the limiting seat 61 and the sealing plate B71, resulting in residues in the mounting groove 41. When the milling cutter stops working, the centrifugal force disappears, the spring 63 begins to rebound, driving the limit seat 61 to reset. At this time, the supporting effect of the limit seat 61 on the baffle 51 disappears, and the baffle 51 will slowly descend along the limit rod 5. During the descent of the baffle 51, the tiny metal particles on the limit plate 52 will fall into the dust collection groove 42 along the guide slope 53. When the limit plate 52 returns to its original position, it will cover the dust collection groove 42 and work together with the limit plate 52 to temporarily store the tiny metal particles in the dust collection groove 42. Finally, all the tiny metal particles are concentrated in the dust collection groove 42 and isolated from the outside world, avoiding continuous wear on key components such as the fixed tool holder 2, the docking tool holder 3, and the fixed plate A43. After the cutting work is completed, turn off the drive mechanism of the external machine body. At this time, the tool bar 1, the fixed tool holder 2 and the docking tool holder 3 stop rotating. After the docking tool holder 3 is removed from the fixed tool holder 2, the sealing plugs 81 on the two dust exhaust pipes 8 can be removed, and the external air pipe is connected to one of the dust exhaust pipes 8. At this time, use an external fan to blow air into the dust collection tank 42 through the dust exhaust pipe 8. During this process, because the top of the dust collection tank 42 is covered by the baffle 51 and the limiting plate 52, the airflow will only flow along the inside of the dust collection tank 42 and finally be discharged from the other dust exhaust pipe 8. During this process, the airflow will carry the tiny metal particles in the dust collection tank 42 out of the dust exhaust pipe 8, thus completing the cleaning of the tiny metal particles in the dust collection tank 42.
[0029] 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.
[0030] 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 modular end mill with adjustable cutting length, comprising a shank (1), wherein a fixed tool holder (2) is fixedly connected to the bottom of the shank (1), and a docking tool holder (3) is mated to the bottom of the fixed tool holder (2), characterized in that: The top of the docking tool holder (3) is fixedly connected to the mounting plate (4). The top of the mounting plate (4) is provided with a mounting groove (41). The inner bottom wall of the mounting groove (41) is provided with an annular dust collection groove (42) near the edge. Several evenly distributed fixing plates A (43) and fixing plates B (45) are fixedly connected to the mounting plate (4). Each fixing plate A (43) and fixing plate B (45) is distributed in a cross pattern. The height of the fixing plate B (45) is lower than that of the fixing plate A (43). A gap for dust discharge is provided between adjacent fixing plates A (43) and fixing plates B (45). The top of the fixing plate A (43) near the edge of the mounting plate (4) is provided with a dust discharge groove (44). The top of the fixing plate B (45) is provided with a top arc surface that slopes to both sides.
2. The modular end mill with adjustable cutting length according to claim 1, characterized in that: The inner bottom wall of the mounting groove (41) is fixedly connected with a number of annularly distributed limiting rods (5), and the limiting rods (5) are vertically slidably connected with a baffle (51) of annular structure. The inner wall of the mounting groove (41) is fixedly connected with a limiting plate (52) of annular structure.
3. A modular end mill with adjustable cutting length according to claim 2, characterized in that: The outer diameter edge of the baffle (51) is located above the inner diameter edge of the limiting plate (52). The top of the limiting plate (52) is provided with a guide slope (53) that is inclined towards the baffle (51). Both the baffle (51) and the limiting plate (52) are located above the dust collection groove (42).
4. A modular end mill with adjustable cutting length according to claim 3, characterized in that: The mounting groove (41) has several annularly distributed sliding grooves (6) on its inner bottom wall. Each sliding groove (6) is slidably connected to a limiting seat (61). A spring (63) is fixedly connected between the side of the limiting seat (61) away from the baffle (51) and the inner wall of the sliding groove (6).
5. A modular end mill with adjustable cutting length according to claim 4, characterized in that: The top of the limiting seat (61) is provided with an extrusion slope (62) that is inclined toward the baffle (51). The lowest point of the extrusion slope (62) is flush with the top opening of the chute (6). The side of the limiting seat (61) away from the baffle (51) is provided with an arc surface.
6. A modular end mill with adjustable cutting length according to claim 5, characterized in that: A sealing plate A (7) is fixedly connected to the inner wall of the slide groove (6) away from the limiting rod (5). A sealing plate B (71) is fixedly connected to the side of the limiting seat (61) away from the limiting rod (5). The sealing plate B (71) is located above the sealing plate A (7). The bottom of the sealing plate B (71) is slidably connected to the top of the sealing plate A (7).
7. A modular end mill with adjustable cutting length according to claim 6, characterized in that: The top of the sealing plate A (7) is flush with the top opening of the groove (6), and the sealing plate B (71) has a horizontal arc surface on the side away from the limiting seat (61).
8. A modular end mill with adjustable cutting length according to claim 1, characterized in that: Two dust discharge pipes (8) are fixedly connected to one side of the mounting plate (4). The dust discharge pipes (8) are connected to the dust collection tank (42). The end of the dust discharge pipe (8) away from the mounting plate (4) is provided with a sealing plug (81).
9. A modular end mill with adjustable cutting length according to claim 1, characterized in that: The fixed blade holder (2) has several uniformly distributed blades A (21) fixedly connected to its side, and the bottom of the fixed blade holder (2) has a docking hole (22).
10. A modular end mill with adjustable cutting length according to claim 9, characterized in that: The side of the docking tool holder (3) is fixedly connected with several uniformly distributed blades B (31). The middle position of the inner bottom wall of the mounting groove (41) is provided with a docking seat that fits into the docking hole (22). The bottom of the docking tool holder (3) is penetrated by a fastening bolt (32). The top of the fastening bolt (32) is provided with a thread. The top of the fastening bolt (32) is threadedly connected to the docking hole (22).