A double-sided chip flute nose coating tool

Abstract

The utility model discloses a kind of round nose coating knives of two-way chip removal passage, including supporting seat, milling rod, driving mechanism and reset mechanism, milling rod is slidably connected on supporting seat, and with supporting seat rotationally connected, and it is provided with round nose cutter bar on one end of milling rod located supporting seat outside, driving mechanism and reset mechanism are all arranged in supporting seat.The beneficial effects of the utility model are: in the utility model, by integrating driving mechanism and reset mechanism in supporting seat, the tool is simultaneously realized high-speed rotation and axial small-range reciprocating motion in the processing process, without relying on external cylinder or workpiece rotation, burr elimination and surface finishing can be completed, and by the combination of different number of teeth first driving gear, first driven gear, and second driving gear and second driven gear, the synergic control of cutting speed and feed rate is optimized, to ensure that the cutting depth of the tool is stable in the linkage process, reduce the vibration and tool wear caused by motion superposition.

Description

Technical Field

[0001] This utility model relates to a round nose coated knife, specifically a round nose coated knife with a bidirectional chip removal channel, belonging to the technical field of round nose coated knives. Background Technology

[0002] A round nose end mill is a cutting tool whose arc length is greater than 1 / 4 of a circle. It is used for milling on CNC machining centers and can be used for roughing, flat surface finishing, and curved surface finishing. The biggest difference between a round nose end mill and a ball end mill is that it combines the advantages of both. The curvature of the end mill tip is not as large as that of a ball end mill, but only a small radius. At the same time, the bottom of the end mill tip retains the characteristics of an end mill. This design allows it to achieve good milling quality when machining flat workpieces. Round nose end mills are usually used for milling workpieces when it is necessary to form planes, steps, grooves, and other shaped surfaces.

[0003] However, most existing round nose coated cutters have various problems. For example, in a round nose cutter disclosed in publication number CN221018836U that facilitates chip removal, although the liquid inlet provided on the protective shell connects the external liquid inlet to the liquid inlet, allowing the liquid discharged from the outlet to flow into the chip removal groove, the waste chips generated during workpiece machining also enter the chip removal groove. The liquid sprayed from the inside out can flush out the waste chips in the chip removal groove, thereby effectively preventing these waste chips from sticking to the cutting edge of the tool and causing a large number of tool marks to appear on the surface of the workpiece when the bottom edge of the tool is milled, thus improving practicality.

[0004] However, in this technical solution and most current technical solutions, existing round nose coating cutters usually require a small range of reciprocating motion of the cutter or workpiece to improve the smoothness of the milled surface and eliminate burrs during the machining process. However, this reciprocating motion relies on external support equipment (such as cylinders) to drive the cutter or workpiece to rotate at high speed. When the workpiece cannot rotate due to size, shape or fixing method, the application scenarios of traditional round nose cutters are severely restricted, resulting in low processing efficiency and narrow applicability. In addition, reciprocating motion requires high equipment precision, which can easily increase energy consumption and cost. Therefore, there is an urgent need for a round nose coating cutter structure that can achieve efficient chip removal and surface optimization without relying on workpiece movement. Utility Model Content

[0005] 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 bidirectional chip removal channel round nose coated cutter.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A round nose coated cutter with a bidirectional chip removal channel includes a support, a milling rod, a drive mechanism, and a reset mechanism. The milling rod is slidably connected to the support and rotatably connected to the support. A round nose cutter bar is provided at one end of the milling rod located outside the support. The drive mechanism and the reset mechanism are both located inside the support.

[0008] The driving mechanism includes a linkage cylinder, a protrusion, a docking plate, and an abutment plate. The linkage cylinder is rotatably connected to the support seat, and a through hole is provided through the axis of the linkage cylinder. The milling rod is coaxial and slidably fitted in the through hole. The protrusion is fixed on the outer wall of the linkage cylinder. The docking plate is coaxially fixed on the milling rod. One end of the abutment plate is fixed at the edge of the docking plate, and the other end slides against the protrusion.

[0009] As a further embodiment of this utility model: the driving mechanism further includes a transmission rod, a first driving gear and a first driven gear. The transmission rod is rotatably connected in the support seat and is arranged parallel to the milling rod. The first driving gear is coaxially fixed on the transmission rod, and the first driven gear is coaxially fixed on the mating plate. The first driven gear and the first driving gear are slidably connected and mesh with each other.

[0010] As a further embodiment of this utility model: the driving mechanism further includes a second driving gear and a second driven gear. The second driving gear is coaxially fixed on the transmission rod, and the second driven gear is coaxially fixed on one end of the linkage cylinder. The second driving gear and the second driven gear mesh with each other.

[0011] As a further embodiment of this utility model: both the first driving gear and the first driven gear have 30 teeth, and both the second driving gear and the second driven gear have 20 teeth.

[0012] As a further embodiment of this utility model: the reset mechanism includes a slot, a reset frame, a locking block, and a reset spring. The slot is disposed on the milling rod, one end of the reset frame is rotatably connected to the support, the locking block is disposed at the other end of the reset frame and is slidably locked in the slot, and one end of the reset spring is connected to the support and the other end is connected to the reset frame.

[0013] As a further embodiment of this utility model: a sleeve is coaxially fixed at one end of the milling rod located outside the support, the round nose cutter is locked inside the sleeve by screws, and a diamond coating is provided on the surface of the round nose cutter, and a bidirectional chip removal channel is provided on the round nose cutter.

[0014] The beneficial effects of this utility model are:

[0015] In this invention, by integrating a drive mechanism and a reset mechanism inside the support, the tool can simultaneously achieve high-speed rotation and small-range axial reciprocating motion during the machining process. This eliminates burrs and performs surface finishing without relying on external cylinders or workpiece rotation. Furthermore, by combining a first driving gear, a first driven gear, a second driving gear, and a second driven gear with different numbers of teeth, the coordinated control of cutting speed and feed rate is optimized, ensuring stable cutting depth during the linkage process and reducing vibration and tool wear caused by the superposition of motion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the drive mechanism structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the reset mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the separate structure of the milling rod and the linkage cylinder of this utility model.

[0020] In the diagram: 1. Support seat, 2. Milling rod, 3. Drive mechanism, 31. Linkage cylinder, 32. Protrusion, 33. Connecting plate, 34. Abutting plate, 35. Transmission rod, 36. First driving gear, 37. First driven gear, 38. Second driving gear, 39. Second driven gear, 4. Reset mechanism, 41. Slot, 42. Reset frame, 43. Locking block, 44. Reset spring. Detailed Implementation

[0021] 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

[0022] like Figures 1 to 4 As shown, a round nose coated cutter with a bidirectional chip removal channel includes a support 1, a milling rod 2, a drive mechanism 3 and a reset mechanism 4. The milling rod 2 is slidably connected to the support 1 and rotatably connected to the support 1. A round nose cutter bar is provided at one end of the milling rod 2 located outside the support 1. The drive mechanism 3 and the reset mechanism 4 are both located inside the support 1.

[0023] The drive mechanism 3 includes a linkage cylinder 31, a protrusion 32, a docking plate 33, and an abutment plate 34. The linkage cylinder 31 is rotatably connected to the support 1, and a through hole is provided through the axis of the linkage cylinder 31. The milling rod 2 is partially coaxial and slidably fitted in the through hole. The protrusion 32 is fixed on the outer wall of the linkage cylinder 31. The docking plate 33 is coaxially fixed on the milling rod 2. One end of the abutment plate 34 is fixed at the edge of the docking plate 33, and the other end slides against the protrusion 32.

[0024] The drive mechanism 3 also includes a transmission rod 35, a first driving gear 36 and a first driven gear 37. The transmission rod 35 is rotatably connected in the support seat 1 and is arranged parallel to the milling rod 2. The first driving gear 36 is coaxially fixed on the transmission rod 35, and the first driven gear 37 is coaxially fixed on the mating plate 33. The first driven gear 37 and the first driving gear 36 are slidably connected and mesh with each other.

[0025] The drive mechanism 3 also includes a second drive gear 38 and a second driven gear 39. The second drive gear 38 is coaxially fixed on the transmission rod 35, and the second driven gear 39 is coaxially fixed on one end of the linkage cylinder 31. The second drive gear 38 and the second driven gear 39 mesh with each other.

[0026] The first driving gear 36 and the first driven gear 37 both have 30 teeth, while the second driving gear 38 and the second driven gear 39 both have 20 teeth.

[0027] In this utility model, by integrating a drive mechanism 3 and a reset mechanism 4 inside the support 1, the tool can simultaneously achieve high-speed rotation and small-range axial reciprocating motion during the machining process. This eliminates burrs and performs surface finishing without relying on external cylinders or workpiece rotation. Furthermore, by combining a first drive gear 36, a first driven gear 37, a second drive gear 38, and a second driven gear 39 with different numbers of teeth, the coordinated control of cutting speed and feed rate is optimized, ensuring that the cutting depth is stable during the linkage process and reducing vibration and tool wear caused by the superposition of motion. Example 2

[0028] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0029] The reset mechanism 4 includes a slot 41, a reset frame 42, a locking block 43, and a reset spring 44. The slot 41 is disposed on the milling rod 2. One end of the reset frame 42 is rotatably connected to the support seat 1. The locking block 43 is disposed at the other end of the reset frame 42 and is slidably locked in the slot 41. One end of the reset spring 44 is connected to the support seat 1, and the other end is connected to the reset frame 42. The spring force of the reset spring 44 enables the reset frame 42 to drive the milling rod 2 to reset quickly, while ensuring that the abutment plate 34 is always firmly abutting against the protrusion 32.

[0030] A sleeve is coaxially fixed at one end of the milling rod 2 outside the support 1. The round nose cutter is locked inside the sleeve by screws and has a diamond coating on its surface. The round nose cutter also has a bidirectional chip removal channel, which improves the chip removal efficiency of the round nose cutter. At the same time, the diamond coating increases the hardness of the round nose cutter.

[0031] Working principle: When using this round nose coating cutter, first fix the round nose cutter to the cylinder located at one end of the support seat 1 on the milling rod 2 with screws, and then the milling operation can begin. During milling, the transmission rod 35 drives the first drive gear 36 and the second drive gear 38 to rotate synchronously. At this time, the first drive gear 36 drives the first driven gear 37 to mesh and link together, and drives the milling rod 2 to rotate at high speed, so that the round nose cutter performs milling operation on the workpiece. At the same time, the second driven gear 39 meshes and links with the second drive gear 38. At this time, there is a speed difference between the first driven gear 37 and the second driven gear 39, which causes the abutment plate 34 to slide on the protrusion 32 and drive the milling rod 2 to make axial feed motion. The milling rod 2 is quickly reset by the reset mechanism 4, so as to realize the axial reciprocating motion of the milling rod 2.

[0032] 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.

[0033] 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 round-nose coated cutter with a bidirectional chip removal channel, comprising a support (1), a milling rod (2), a drive mechanism (3), and a reset mechanism (4), characterized in that, The milling rod (2) is slidably connected to the support (1) and rotatably connected to the support (1). A round nose cutter bar is provided at one end of the milling rod (2) located outside the support (1). The driving mechanism (3) and the reset mechanism (4) are both located inside the support (1). The drive mechanism (3) includes a linkage cylinder (31), a protrusion (32), a docking plate (33), and an abutment plate (34). The linkage cylinder (31) is rotatably connected to the support (1), and a through hole is provided through the axis of the linkage cylinder (31). The milling rod (2) is partially coaxial and slidably fitted in the through hole. The protrusion (32) is fixed on the outer wall of the linkage cylinder (31). The docking plate (33) is coaxially fixed on the milling rod (2). One end of the abutment plate (34) is fixed at the edge of the docking plate (33), and the other end slides against the protrusion (32).

2. The round nose coated cutter with a bidirectional chip removal channel according to claim 1, characterized in that: The drive mechanism (3) further includes a transmission rod (35), a first driving gear (36) and a first driven gear (37). The transmission rod (35) is rotatably connected in the support seat (1) and is arranged parallel to the milling rod (2). The first driving gear (36) is coaxially fixed on the transmission rod (35), and the first driven gear (37) is coaxially fixed on the mating plate (33). The first driven gear (37) and the first driving gear (36) are slidably connected and mesh with each other.

3. The round nose coated cutter with a bidirectional chip removal channel according to claim 2, characterized in that: The drive mechanism (3) further includes a second driving gear (38) and a second driven gear (39). The second driving gear (38) is coaxially fixed on the transmission rod (35), and the second driven gear (39) is coaxially fixed on one end of the linkage cylinder (31). The second driving gear (38) and the second driven gear (39) mesh with each other.

4. A round nose coated cutter with a bidirectional chip removal channel according to claim 3, characterized in that: The first driving gear (36) and the first driven gear (37) are both 30-tooth structures, and the second driving gear (38) and the second driven gear (39) are both 20-tooth structures.

5. A round nose coated cutter with a bidirectional chip removal channel according to claim 1, characterized in that: The reset mechanism (4) includes a slot (41), a reset frame (42), a locking block (43), and a reset spring (44). The slot (41) is set on the milling rod (2). One end of the reset frame (42) is rotatably connected to the support (1). The locking block (43) is set on the other end of the reset frame (42) and is slidably locked in the slot (41). One end of the reset spring (44) is connected to the support (1), and the other end is connected to the reset frame (42).

6. A round nose coated cutter with a bidirectional chip removal channel according to claim 1, characterized in that: The milling rod (2) is coaxially fixed to one end outside the support (1) with a sleeve. The round nose cutter is locked inside the sleeve by screws and has a diamond coating on its surface. The round nose cutter also has a bidirectional chip removal channel.

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