Efficient T-shaped milling cutter with spiral cooling groove

Abstract

The utility model discloses an efficient T-shaped milling cutter with a spiral cooling groove, which comprises a supporting seat, a bearing rod, a driven gear, an adjusting rod, a transmission cylinder, a butt joint seat, a T-shaped milling cutter and a reciprocating mechanism, the bearing rod is fixed on the supporting seat, the driven gear is coaxially and rotatably connected on the bearing rod, the adjusting rod is fixed on the driven gear, and the transmission cylinder is fixed on the T-shaped milling cutter. The adjusting rod is clamped to one end of a transmission cylinder in a sliding mode, and the transmission cylinder and the driven gear are coaxially arranged. The reciprocating mechanism is arranged, so that the T-shaped milling cutter can perform high-frequency micro-amplitude vibration in the axial direction of the bearing rod when rotating at a high speed, the contact position of a cutting edge and a workpiece is dynamically adjusted, burr generation is directly inhibited, cooling liquid is uniformly distributed to the spiral groove through a channel in the cutter handle, and the cutting efficiency is improved. And meanwhile, the centrifugal force effect generated by reciprocating motion is combined, the turbulence intensity of cooling liquid is enhanced, the temperature of a cutting area is greatly reduced, and burrs caused by thermal deformation are reduced.

Description

Technical Field

[0001] This utility model relates to a milling cutter, specifically a high-efficiency T-type milling cutter with a spiral cooling groove, belonging to the field of milling cutter technology. Background Technology

[0002] T-slot milling cutters are high-efficiency cutting tools used in the machining field for milling T-slots, keyways, and irregular contours. Their composite structure of side and end cutting edges allows them to complete the bottom diameter expansion and sidewall finishing in a single pass. As the manufacturing industry demands higher processing efficiency and surface quality, the heat dissipation performance, chip removal capability, and machining accuracy of traditional T-slot milling cutters under high-speed cutting conditions have gradually become technical bottlenecks. Especially in the machining of viscous materials such as aluminum alloys and titanium alloys, the tool is prone to high temperature due to chip accumulation, which leads to accelerated wear of the cutting edge and the formation of burrs at the edge of the slot. These burrs need to be removed through repeated finishing or secondary machining, significantly reducing production efficiency. Therefore, the development of T-slot milling cutters that combine high-efficiency heat dissipation, dynamic chip removal, and high-precision cutting has become an urgent need in the industry.

[0003] However, most existing T-slot end mills have various problems. For example, in a T-slot end mill disclosed in publication number CN222154052U, although its structure design of locking block with limiting groove makes it less prone to loosening during cutting and can be used for cutting with a one-piece tungsten steel cutter body, cutting edge, and chip groove, thus greatly extending its service life, traditional T-slot end mills are usually rigidly fixed by a drive shaft, and the cutting position is limited by the geometric center of the tool, leading to the following problems:

[0004] 1. Burr formation mechanism: During the rotation of the tool, there is a periodic fluctuation in cutting force in the contact area between the side edge and the workpiece. The chips are squeezed and easily form irregular burrs at the edge of the groove.

[0005] 2. Machining efficiency limitations: To meet surface roughness requirements, multiple reciprocating passes or reduced feed rates are needed to compensate for the insufficiency of a single cut, resulting in a longer machining cycle.

[0006] 3. Heat dissipation and chip removal defects: Although the existing spiral cooling groove structure can improve the flow path of coolant, the fixed design of groove depth and pitch is difficult to adapt to the optimization requirements of cutting parameters of different materials, resulting in local temperature rise and chip retention. Utility Model Content

[0007] 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 high-efficiency T-type end mill with a spiral cooling groove.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A high-efficiency T-slot milling cutter with a spiral cooling groove includes a support base, a support rod, a driven gear, an adjusting rod, a transmission cylinder, a docking seat, a T-slot milling cutter, and a reciprocating mechanism. The support rod is fixed on the support base, the driven gear is coaxially rotatably connected to the support rod, the adjusting rod is fixed on the driven gear and slidably engaged with one end of the transmission cylinder, the transmission cylinder is coaxially arranged with the driven gear, the docking seat is fixed on the end of the transmission cylinder away from the adjusting rod, and the T-slot milling cutter is disposed in the docking seat.

[0010] The reciprocating mechanism includes a limiting plate, a lever, and a slide groove. The limiting plate is coaxially fixed on the support rod and located in the internal cavity of the transmission cylinder. The slide groove has a spiral structure and is recessed on the peripheral wall of the limiting plate. One end of the lever is fixed on the inner wall of the transmission cylinder, and the other end is slidably engaged in the slide groove.

[0011] As a further embodiment of this utility model: the reciprocating mechanism further includes a drive gear and a drive motor. The drive gear is rotatably connected to one side of the support base and meshes with the driven gear. The drive motor is fixed to the other side of the support base, and the output shaft of the drive motor is coaxially fixed with the drive gear.

[0012] As a further embodiment of this utility model: a guide rod is fixed at the axis of the support rod, the guide rod is located at the center of the docking seat, a cavity is provided at the center of the T-shaped milling cutter, and a spiral cooling groove is provided on the T-shaped milling cutter. Multiple micro-holes are provided in the groove, and the cavity and the micro-holes are interconnected. The guide rod is docked in the cavity of the T-shaped milling cutter and is slidably connected to the T-shaped milling cutter.

[0013] As a further improvement of this utility model: a threaded cylinder is coaxially fixed to one end of the guide rod away from the T-shaped milling cutter. The threaded cylinder is located on one side of the support base and is connected to the external guide pipe through threads.

[0014] As a further improvement of this utility model, the diameter of the driven gear is larger than that of the driving gear.

[0015] As a further improvement of this utility model: one end of the lever is provided with a ball bearing, and the ball bearing is rolled and engaged in the groove.

[0016] The beneficial effects of this utility model are:

[0017] In this invention, a reciprocating mechanism is provided so that the T-shaped milling cutter can vibrate at high frequency and micro amplitude along the axial direction of the support rod when rotating at high speed. This dynamically adjusts the contact position between the cutting edge and the workpiece, directly suppressing burr formation. The coolant is evenly distributed to the spiral groove through the internal channel of the tool holder, achieving bidirectional cooling of the cutting edge and the chip removal channel. At the same time, combined with the centrifugal force effect generated by the reciprocating motion, the turbulence intensity of the coolant is enhanced, which greatly reduces the temperature of the cutting zone and reduces burrs caused by thermal deformation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the docking seat and its overall connection structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the reciprocating mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the threaded cylinder connection structure of this utility model.

[0022] In the diagram: 1. Support seat, 2. Support rod, 3. Driven gear, 4. Adjusting rod, 5. Transmission cylinder, 6. Connecting seat, 7. T-slot milling cutter, 8. Reciprocating mechanism, 81. Limiting plate, 82. Pulley, 83. Slide groove, 84. Drive gear, 85. Drive motor, 9. Guide rod, 10. Threaded cylinder. Detailed Implementation

[0023] 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

[0024] like Figures 1 to 4 As shown, a high-efficiency T-slot milling cutter with a spiral cooling groove includes a support base 1, a support rod 2, a driven gear 3, an adjusting rod 4, a transmission cylinder 5, a docking seat 6, a T-slot milling cutter 7, and a reciprocating mechanism 8. The support rod 2 is fixed on the support base 1, the driven gear 3 is coaxially rotatably connected to the support rod 2, the adjusting rod 4 is fixed on the driven gear 3, and the adjusting rod 4 is slidably engaged with one end of the transmission cylinder 5. The transmission cylinder 5 is coaxially arranged with the driven gear 3, the docking seat 6 is fixed on the end of the transmission cylinder 5 away from the adjusting rod 4, and the T-slot milling cutter 7 is disposed in the docking seat 6.

[0025] The reciprocating mechanism 8 includes a limiting plate 81, a lever 82, and a slide groove 83. The limiting plate 81 is coaxially fixed on the support rod 2 and located in the internal cavity of the transmission cylinder 5. The slide groove 83 has a spiral structure and is recessed on the peripheral wall of the limiting plate 81. One end of the lever 82 is fixed on the inner wall of the transmission cylinder 5, and the other end is slidably engaged in the slide groove 83.

[0026] The reciprocating mechanism 8 also includes a drive gear 84 and a drive motor 85. The drive gear 84 is rotatably connected to one side of the support base 1 and meshes with the driven gear 3. The drive motor 85 is fixed to the other side of the support base 1, and the output shaft of the drive motor 85 is coaxially fixed with the drive gear 84.

[0027] A guide rod 9 is fixed at the axis of the support rod 2. The guide rod 9 is located at the center of the docking seat 6. A cavity is provided at the center of the T-shaped milling cutter 7, and a spiral cooling groove is provided on the T-shaped milling cutter 7. Multiple micro-holes are provided in the groove, and the cavity and micro-holes are connected. The guide rod 9 is docked in the cavity of the T-shaped milling cutter 7 and is slidably connected to the T-shaped milling cutter 7.

[0028] In this invention, by setting a reciprocating mechanism 8, the T-shaped milling cutter 7 can perform high-frequency micro-amplitude vibration along the axial direction of the support rod 2 when rotating at high speed, dynamically adjusting the contact position between the cutting edge and the workpiece, directly suppressing burr generation. The coolant is evenly distributed to the spiral groove through the internal channel of the tool holder, realizing bidirectional cooling of the cutting edge and the chip removal channel. At the same time, combined with the centrifugal force effect generated by the reciprocating motion, the turbulence intensity of the coolant is enhanced, which greatly reduces the temperature of the cutting zone and reduces burrs caused by thermal deformation. Example 2

[0029] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0030] A threaded cylinder 10 is coaxially fixed to one end of the guide rod 9 away from the T-shaped milling cutter 7. The threaded cylinder 10 is located on one side of the support base 1 and is connected to the external guide pipe by threads. The threaded cylinder 10 enables the guide rod 9 and the external guide pipe to be quickly assembled and disassembled.

[0031] The driven gear 3 has a larger diameter than the driving gear 84, and the output torque of the drive motor 85 is increased by using gear sets of different diameters.

[0032] One end of the lever 82 is equipped with a ball bearing, which is rolled and engaged in the groove 83 to reduce the frictional resistance of the lever 82.

[0033] Working principle: When using this milling cutter, first fix the T-shaped milling cutter 7 in the docking seat 6 with screws. During docking, the guide rod 9 is simultaneously docked into the cavity of the T-shaped milling cutter 7. Then, start the drive motor 85 to drive the drive gear 84 to rotate. At the same time, the drive gear 84 drives the driven gear 3 to mesh and move together. At this time, the adjusting rod 4 drives the transmission cylinder 5 and the T-shaped milling cutter 7 to rotate as a whole to perform milling operations on the workpiece. When the transmission cylinder 5 rotates, the lever 82 slides in the slide groove 83 and drives the transmission cylinder 5 to reciprocate on the adjusting rod 4, thereby synchronously driving the T-shaped milling cutter 7 to reciprocate along the axial direction.

[0034] 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.

[0035] 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 high-efficiency T-slot milling cutter with spiral cooling grooves, comprising a support base (1), a support rod (2), a driven gear (3), an adjusting rod (4), a transmission cylinder (5), a docking seat (6), a T-slot milling cutter (7), and a reciprocating mechanism (8), characterized in that, The support rod (2) is fixed on the support base (1), the driven gear (3) is coaxially rotatably connected to the support rod (2), the adjusting rod (4) is fixed on the driven gear (3), and the adjusting rod (4) is slidably engaged with one end of the transmission cylinder (5). The transmission cylinder (5) is coaxially arranged with the driven gear (3), the docking seat (6) is fixed on the end of the transmission cylinder (5) away from the adjusting rod (4), and the T-shaped milling cutter (7) is arranged inside the docking seat (6). The reciprocating mechanism (8) includes a limiting plate (81), a lever (82) and a slide groove (83). The limiting plate (81) is coaxially fixed on the support rod (2) and located in the internal cavity of the transmission cylinder (5). The slide groove (83) has a spiral structure and is recessed on the peripheral wall of the limiting plate (81). One end of the lever (82) is fixed on the inner wall of the transmission cylinder (5), and the other end is slidably engaged in the slide groove (83).

2. The high-efficiency T-slot end mill with spiral cooling groove according to claim 1, characterized in that: The reciprocating mechanism (8) also includes a drive gear (84) and a drive motor (85). The drive gear (84) is rotatably connected to one side of the support base (1) and meshes with the driven gear (3). The drive motor (85) is fixed on the other side of the support base (1), and the output shaft of the drive motor (85) is coaxially fixed with the drive gear (84).

3. The high-efficiency T-slot end mill with spiral cooling groove according to claim 1, characterized in that: A guide rod (9) is fixed at the axis of the support rod (2). The guide rod (9) is located at the center of the docking seat (6). A cavity is provided at the center of the T-shaped milling cutter (7), and a spiral cooling groove is provided on the T-shaped milling cutter (7). Multiple micro-holes are provided in the groove, and the cavity and micro-holes are connected. The guide rod (9) is docked in the cavity of the T-shaped milling cutter (7) and is slidably connected to the T-shaped milling cutter (7).

4. A high-efficiency T-slot end mill with spiral cooling grooves according to claim 3, characterized in that: A threaded cylinder (10) is coaxially fixed at one end of the guide rod (9) away from the T-shaped milling cutter (7). The threaded cylinder (10) is located on one side of the support base (1) and is connected to the external guide pipe through a thread.

5. A high-efficiency T-slot end mill with spiral cooling grooves according to claim 2, characterized in that: The diameter of the driven gear (3) is larger than that of the driving gear (84).

6. A high-efficiency T-slot end mill with spiral cooling grooves according to claim 1, characterized in that: One end of the lever (82) is provided with a ball bearing, and the ball bearing is rolled and engaged in the groove (83).

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