A replaceable head type carbide milling cutter

Abstract

The utility model discloses a replaceable cutting head formula hard alloy milling cutter, including support plate, transmission rod, support plate, driven rod, milling cutter body, revolve subassembly and rotate subassembly, support plate is fixed on lathe, transmission rod rotatory connection is established in support plate, and one end of the support plate of L shape structure is rotatory connection in transmission rod, and driven rod rotatory connection is established in the other end of support plate, and milling cutter body coaxial connection is established in driven rod one end. The utility model has the beneficial effect that: in the utility model, the meshing transmission of the drive gear, driven gear and the limit inner tooth ring in the revolve subassembly makes transmission rod drive support plate and milling cutter body revolve, simultaneously, the cooperation of the linkage outer tooth ring and the driven gear in the rotate subassembly drives driven rod and milling cutter body to rotate, and the revolving and rotating compound motion of milling cutter body changes the fixed processing mode of traditional milling cutter, and it can improve the processing efficiency of the cylindrical workpiece peripheral wall significantly without simply relying on workpiece high speed rotation.

Description

Technical Field

[0001] This utility model relates to a milling cutter, specifically a carbide milling cutter with a replaceable cutting head, belonging to the field of milling cutter technology. Background Technology

[0002] In the field of mechanical manufacturing, milling is a key material removal process that is widely used in the machining of the shape, surface finishing and structural forming of various metal workpieces. Among them, the machining of the peripheral wall of cylindrical workpieces is a typical and high-frequency operation scenario. The interchangeable cutting head carbide end mill has become a common tool in this type of machining scenario due to its advantages of excellent cutting performance, long tool life, convenient cutting head replacement and controllable cost.

[0003] However, most existing milling cutters have various problems. For example, in the carbide milling cutter with replaceable cutting head disclosed in announcement number CN216151236U, although the positioning pin and elastic stabilizing component can be used to position the milling cutter head and ensure the reliability of the milling cutter head installation position, in this technical solution and most current milling cutters, the commonly used operation mode in the industry for milling the peripheral wall of cylindrical workpieces is "workpiece actively rotates + milling cutter fixed contact". During processing, the cylindrical workpiece needs to be fixed on the machine tool spindle or rotary table by tooling fixtures such as chuck and center, and the drive system drives the workpiece to rotate at high speed; the milling operation on the peripheral wall of the workpiece is achieved by the contact between the milling cutter and the workpiece. While this machining mode can meet basic milling accuracy requirements, there is a clear upper limit to the workpiece rotation speed in order to ensure the stability and machining accuracy of the milling process. It is not possible to shorten the machining time per unit area by infinitely increasing the rotation speed. If the workpiece rotation speed is forcibly increased to improve efficiency, on the one hand, it will lead to a significant increase in the energy consumption of the machine tool drive system. On the other hand, the centrifugal force generated by the high-speed rotation of the workpiece may exceed the clamping force of the tooling fixture, causing the workpiece to loosen or shift. This not only affects the machining accuracy but may also cause the workpiece to be scrapped or even cause equipment safety accidents. Therefore, the efficiency of the existing machining mode still needs to be improved. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to solve the aforementioned shortcomings of existing technologies by proposing a replaceable cutting head type carbide end mill.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A carbide end mill with a replaceable cutting head includes a support plate, a transmission rod, a support plate, a driven rod, an end mill body, a revolution assembly, and a rotation assembly. The support plate is fixed on a machine tool. The transmission rod is rotatably connected to the support plate. One end of the L-shaped support plate is rotatably connected to the transmission rod. The driven rod is rotatably connected to the other end of the support plate. The end mill body is coaxially connected to one end of the driven rod. Both the revolution assembly and the rotation assembly are connected to the transmission rod. The revolution assembly includes a driving gear, a driven gear, and a limiting internal gear ring. The driving gear is coaxially fixed on the transmission rod, the driven gear is rotatably connected to the support plate, and the limiting internal gear ring is fixed on the support plate and coaxially arranged with the transmission rod. The driven gear meshes between the driving gear and the limiting internal gear ring.

[0006] As a further embodiment of this utility model: the self-rotating component includes a linkage external gear ring and a driven gear. The linkage external gear ring is coaxially fixed to one end of the transmission rod, and the driven gear is coaxially fixed to the driven rod and meshes with the edge of the linkage external gear ring.

[0007] As a further improvement of this utility model, the diameter of the driving gear is larger than that of the driven gear.

[0008] As a further improvement of this utility model, the driving gear, driven gear, limiting internal gear ring, linkage external gear ring, and passive gear are all helical gear structures.

[0009] As a further improvement of this utility model, the milling cutter body is available in various models, and all milling cutter bodies are made of cemented carbide material.

[0010] As a further improvement of this utility model: one end of the driven rod is connected to a locking bolt, and the milling cutter body is detachably connected to the driven rod through the locking bolt.

[0011] The beneficial effects of this utility model are: In this invention, the meshing transmission between the driving gear, driven gear, and limiting internal gear ring in the revolution assembly causes the transmission rod to drive the support plate and the milling cutter body to revolve. Simultaneously, the linkage external gear ring in the rotation assembly cooperates with the driven gear to drive the driven rod and the milling cutter body to rotate. The combined revolution and rotation motion of the milling cutter body changes the traditional fixed milling cutter machining mode. It does not need to rely solely on the high-speed rotation of the workpiece, which can significantly improve the machining efficiency of the peripheral wall of cylindrical workpieces. Moreover, under the synergistic effect of revolution and rotation, the milling cutter body can effectively reduce the dependence on the high-speed rotation of the workpiece, avoid the high energy consumption problem caused by the high-speed rotation of the workpiece, and reduce the risk of workpiece loosening and displacement due to excessive centrifugal force. While ensuring machining accuracy, it reduces the workpiece scrap rate, improves the safety of equipment operation, and is simple, efficient, and practical. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the self-rotating component structure of this utility model; Figure 3 This is a schematic diagram of the orbital component structure of this utility model; Figure 4 This is a schematic diagram of the support plate and its connection structure of the present invention.

[0013] In the diagram: 1. Support plate, 2. Transmission rod, 3. Support plate, 4. Driven rod, 5. Milling cutter body, 6. Revolution assembly, 61. Driving gear, 62. Driven gear, 63. Limiting internal gear ring, 7. Rotation assembly, 71. Linkage external gear ring, 72. Passive gear, and 8. Locking bolt. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0015] like Figures 1 to 4 As shown, a carbide end mill with a replaceable cutting head includes a support plate 1, a transmission rod 2, a support plate 3, a driven rod 4, an end mill body 5, a revolution assembly 6, and a rotation assembly 7. The support plate 1 is fixed on a machine tool, the transmission rod 2 is rotatably connected to the support plate 1, one end of the L-shaped support plate 3 is rotatably connected to the transmission rod 2, the driven rod 4 is rotatably connected to the other end of the support plate 3, the end mill body 5 is coaxially connected to one end of the driven rod 4, and both the revolution assembly 6 and the rotation assembly 7 are connected to the transmission rod 2. The orbital assembly 6 includes a driving gear 61, a driven gear 62, and a limiting internal gear ring 63. The driving gear 61 is coaxially fixed on the transmission rod 2, the driven gear 62 is rotatably connected to the support plate 3, and the limiting internal gear ring 63 is fixed on the support plate 1 and coaxially arranged with the transmission rod 2. The driven gear 62 meshes between the driving gear 61 and the limiting internal gear ring 63. The self-rotating assembly 7 includes a linkage external gear ring 71 and a driven gear 72. The linkage external gear ring 71 is coaxially fixed to one end of the transmission rod 2, and the driven gear 72 is coaxially fixed to the driven rod 4 and meshes with the edge of the linkage external gear ring 71.

[0016] In this invention, the meshing transmission of the driving gear 61, driven gear 62, and limiting internal gear ring 63 in the revolution assembly 6 causes the transmission rod 2 to drive the support plate 3 and the milling cutter body 5 to revolve. At the same time, the external gear ring 71 in the rotation assembly 7 works with the driven gear 72 to drive the driven rod 4 and the milling cutter body 5 to rotate. The combined revolution and rotation of the milling cutter body 5 changes the traditional fixed milling cutter processing mode. It does not need to rely solely on the high-speed rotation of the workpiece, which can significantly improve the processing efficiency of the peripheral wall of cylindrical workpieces. Moreover, under the synergistic effect of revolution and rotation, the milling cutter body 5 can effectively reduce the dependence on the high-speed rotation of the workpiece, avoid the high energy consumption problem caused by the high-speed rotation of the workpiece, and reduce the risk of workpiece loosening and displacement due to excessive centrifugal force. While ensuring processing accuracy, it reduces the workpiece scrap rate, improves the safety of equipment operation, and is simple, efficient and practical. Example 2

[0017] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes: The diameter of the driving gear 61 is larger than that of the driven gear 62. By forming a gear reduction ratio through gear sets of different diameters, the driven gear 62 can drive the support plate 3 and the milling cutter body 5 to obtain a more stable and suitable revolution speed for machining when the machine tool provides the same power. At the same time, it can increase the torque and enhance the cutting force of the milling cutter, which is beneficial for dealing with high hardness and large allowance milling operations and improving the machining effect.

[0018] The driving gear 61, driven gear 62, limiting internal gear ring 63, linkage external gear ring 71, and passive gear 72 are all helical gear structures. The helical gear structure can effectively reduce the impact and vibration during the transmission process, thereby reducing operating noise. At the same time, this structure can make the load distribution more uniform, reduce the wear of gears and gear rings, extend the service life of components, and reduce maintenance costs and downtime.

[0019] The milling cutter body 5 is available in various models, and all milling cutter bodies 5 are made of cemented carbide. The availability of multiple models of milling cutter bodies 5 allows for flexible selection of the appropriate milling cutter according to different machining needs, improving machining adaptability. Moreover, all milling cutter bodies are made of cemented carbide, which has the characteristics of high hardness, strong wear resistance, and good hot hardness. It can maintain good cutting performance in high-speed cutting and high-temperature environments, extending the service life of the milling cutter body 5 and improving machining efficiency and quality.

[0020] A locking bolt 8 is connected to one end of the driven rod 4. The milling cutter body 5 is detachably connected to the driven rod 4 via the locking bolt 8, which allows for quick and convenient disassembly and installation of the milling cutter body 5.

[0021] Working principle: When using this milling cutter, first, the appropriate milling cutter body 5 is installed on one end of the driven rod 4 using the locking bolt 8, completing the quick change and fixation of the tool. Then, the machine tool provides power to drive the transmission rod 2 to rotate, and the driving gear 61, which is coaxially fixed with the transmission rod 2, rotates accordingly. Since the diameter of the driving gear 61 is larger than that of the driven gear 62, the two mesh to form a reduction ratio, which causes the driven gear 62 to drive the support plate 3 to revolve around the transmission rod 2 at a stable and appropriate speed. At the same time, the limiting internal gear ring 63 restricts the movement trajectory of the driven gear 62 to ensure the stability of the revolution. At the same time, when the transmission rod 2 rotates, the coaxially fixed linkage external gear ring 71 also rotates synchronously. The linkage external gear ring 71 meshes with the driven gear 72, which is coaxially fixed on the driven rod 4, thereby driving the driven rod 4 to drive the milling cutter body 5 to rotate. Under the combined motion of revolution and rotation, the milling cutter body 5 contacts the cylindrical workpiece to be machined, realizing the milling operation of the workpiece.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A carbide end mill with a replaceable cutting head, comprising a support plate (1), a transmission rod (2), a support plate (3), a driven rod (4), an end mill body (5), a revolution assembly (6), and a rotation assembly (7), characterized in that, The support plate (1) is fixed on the machine tool, the transmission rod (2) is rotatably connected to the support plate (1), one end of the L-shaped support plate (3) is rotatably connected to the transmission rod (2), the driven rod (4) is rotatably connected to the other end of the support plate (3), the milling cutter body (5) is coaxially connected to one end of the driven rod (4), and the revolution assembly (6) and the rotation assembly (7) are both connected to the transmission rod (2). The revolution assembly (6) includes a drive gear (61), a driven gear (62), and a limiting internal gear ring (63). The drive gear (61) is coaxially fixed on the transmission rod (2), the driven gear (62) is rotatably connected to the support plate (3), and the limiting internal gear ring (63) is fixed on the support plate (1) and coaxially arranged with the transmission rod (2). The driven gear (62) meshes between the drive gear (61) and the limiting internal gear ring (63).

2. The carbide end mill with a replaceable cutting head according to claim 1, characterized in that: The self-rotating component (7) includes a linkage external gear ring (71) and a driven gear (72). The linkage external gear ring (71) is coaxially fixed to one end of the transmission rod (2), and the driven gear (72) is coaxially fixed to the driven rod (4) and meshes with the edge of the linkage external gear ring (71).

3. A carbide end mill with a replaceable cutting head according to claim 1, characterized in that: The diameter of the driving gear (61) is larger than that of the driven gear (62).

4. A carbide end mill with a replaceable cutting head according to claim 2, characterized in that: The driving gear (61), driven gear (62), limiting internal gear ring (63), linkage external gear ring (71) and passive gear (72) are all helical gear structures.

5. A carbide end mill with a replaceable cutting head according to claim 1, characterized in that: The milling cutter body (5) is available in various models, and all milling cutter bodies (5) are made of cemented carbide material.

6. A carbide end mill with a replaceable cutting head according to claim 1, characterized in that: One end of the driven rod (4) is connected to a locking bolt (8), and the milling cutter body (5) is detachably connected to the driven rod (4) through the locking bolt (8).

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