A ball end mill

Abstract

The utility model discloses a ball end mill relates to milling cutter technical field, the utility model discloses a shank section and shank section bottom end are provided with neck transition section and neck transition section bottom end are provided with ball head part, still include: cutting edge, set up in the inside one side's front end and the other side's rear end of ball head part, the inside of cutting edge and the inside of ball head part between be provided with dismounting screw thread. The utility model discloses through being provided with cooling and chip removal assembly in the outside and inside of ball end mill, through the three -dimensional heat dissipation network of inner cooling channel and cooling groove formation when using, and cooperate helical circuit to make cooling liquid produce spiral flow effect, and then promote heat dissipation efficiency, and improve the structural strength of neck transition section and effectively restrain processing vibration through the reinforcing rib, cooperate continuous flow guide chip removal with cooling groove simultaneously, promote cutting chip removal speed, and can utilize the lubrication guide slot of setting in the outside of ball head part and direct the cutting surface with cooling liquid, avoid appearing dry friction and ensure cutting surface cooling effect.

Description

Technical Field

[0001] This utility model belongs to the field of milling cutter technology, and in particular relates to a ball end mill. Background Technology

[0002] A ball end mill is a milling cutter with a spherical head used for metal milling. It is typically used to machine curved surfaces, chamfers, semicircles, and other special shapes. Currently, ball end mills are widely used in mold manufacturing, automotive parts processing, and aerospace industries for machining special parts.

[0003] However, ball end mills have several technical problems during continuous milling operations, including severe heat buildup, reduced tool red hardness, a single chip flute that makes chips prone to entanglement and affecting normal milling, and difficulty in reaching the cutting edge root and the milling surface in contact with the workpiece for cooling. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a ball end mill that can effectively solve the problems of the existing technology.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a ball end mill, comprising a shank section, a neck transition section at the bottom end of the shank section, and a ball end at the bottom end of the neck transition section, and further comprising:

[0007] A cutting edge is provided at the front end on one side and the rear end on the other side inside the ball head, and a disassembly screw is provided between the inside of the cutting edge and the inside of the ball head.

[0008] A continuous flow guiding structure is provided on the outside of the neck transition section;

[0009] The internal cooling channel is located at the midpoint between the bottom end of the handle section, the neck transition section, and the top end of the ball head.

[0010] Furthermore, the continuous flow guiding structure includes a cooling groove and a reinforcing rib. The cooling groove is disposed on the outside of the neck transition section, and the reinforcing rib is disposed at the side gap of the cooling groove on the outside of the neck transition section. The cooling groove and the reinforcing rib are spiral-shaped and extend from the top to the bottom of the neck transition section.

[0011] Furthermore, mounting keyways are provided at the top of both ends of the outer side of the tool holder section, and the mounting keyways are symmetrically arranged on the outer side of the tool holder section.

[0012] Furthermore, a heat dissipation upper channel is provided at the bottom of the inside of the handle section, and the inner cooling channel is connected to the heat dissipation upper channel, and the inner cooling channel is perpendicular to the heat dissipation upper channel.

[0013] Furthermore, a spiral loop is provided on the outer side of the tool holder section near the bottom, and a lubrication guide groove is provided on the outer side of the ball head. The lubrication guide groove is arc-shaped and arranged at equal intervals on the outer side of the ball head.

[0014] Furthermore, a titanium nitride coating is provided on the outer side of the ball head, and the titanium nitride coating is uniformly distributed on the outer side of the ball head.

[0015] This utility model has the following beneficial effects:

[0016] This invention features cooling and chip removal components on the outer and inner sides of the ball end mill. During use, a three-dimensional heat dissipation network is formed through the internal cooling channel and cooling groove, and a spiral circuit is used to create a swirling effect in the coolant, thereby improving heat dissipation efficiency. The reinforcing ribs enhance the structural strength of the neck transition section and effectively suppress machining vibration. In conjunction with the cooling groove, continuous chip removal is achieved, increasing the chip removal speed. Furthermore, the lubrication guide groove on the outer side of the ball end mill directs the coolant to the cutting surface, preventing dry friction and ensuring effective cooling of the cutting surface.

[0017] This invention features a titanium nitride coating on the outer side of the ball end mill. During milling, the uniformly distributed titanium nitride coating significantly enhances the hardness and wear resistance of the ball end mill material, thereby extending its service life and reducing operating costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 This is a rear-view perspective view of the present invention;

[0021] Figure 3 This is a side sectional view of the present invention.

[0022] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Tool holder section; 2. Keyway; 3. Neck transition section; 4. Cooling groove; 5. Titanium nitride coating; 6. Ball head; 7. Helical circuit; 8. Reinforcing rib; 9. Lubrication guide groove; 10. Upper heat dissipation channel; 11. Internal cooling channel; 12. Cutting edge; 13. Removal screws. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Please see Figure 1-4 As shown, this utility model is a ball end mill, including a shank section 1, a neck transition section 3 at the bottom end of the shank section 1, and a ball head 6 at the bottom end of the neck transition section 3, and also includes:

[0027] The cutting edge 12 is located at the front end on one side and the rear end on the other side inside the ball head 6. A disassembly screw 13 is provided between the inside of the cutting edge 12 and the inside of the ball head 6. The disassembly screw 13 facilitates the disassembly and replacement of the individual cutting edge 12, thus reducing the milling effect and the cost of using the milling cutter. The top of both ends of the outer side of the tool holder section 1 is provided with a mounting keyway 2, and the mounting keyways 2 are symmetrically arranged on the outer side of the tool holder section 1. The ball end mill can be quickly and securely installed on the tool holder of the milling equipment through the mounting keyways 2.

[0028] As a further implementation of this embodiment, such as Figure 1-4As shown, a continuous flow guiding structure is provided on the outside of the neck transition section 3. The continuous flow guiding structure includes a spiral cooling groove 4 and a spiral reinforcing rib 8. The cooling groove 4 is located on the outside of the neck transition section 3, and the reinforcing rib 8 is located in the side gap of the cooling groove 4 on the outside of the neck transition section 3. The reinforcing rib 8 is used to improve the structural strength of the ball end mill neck transition section 3. The cooling groove 4 and the reinforcing rib 8 extend from the top to the bottom of the neck transition section 3. When milling the workpiece with the ball end mill, the cooling groove 4 and the reinforcing rib 8 work together to continuously guide chip removal, thereby improving the chip removal speed. An internal cooling channel 11 is provided at the middle position between the bottom of the tool holder section 1 and the neck transition section 3 and the top of the ball end mill 6. The bottom end is provided with a heat dissipation upper channel 10, and the inner cooling channel 11 is connected to the heat dissipation upper channel 10. The inner cooling channel 11 is perpendicular to the heat dissipation upper channel 10. A spiral circuit 7 is provided on the outer side of the tool holder section 1 near the bottom. During milling, the heat accumulated on the ball end mill is efficiently dissipated by the inner cooling channel 11 and the cooling groove 4. At the same time, the spiral circuit 7 makes the coolant generate a swirling effect to accelerate heat dissipation. An arc-shaped lubrication guide groove 9 is provided on the outer side of the ball head 6. The lubrication guide groove 9 is arranged at equal intervals on the outer side of the ball head 6. The lubrication guide groove 9 on the outer side of the ball head 6 can ensure that the coolant enters the milling surface of the ball head 6 that contacts the workpiece, ensuring the cooling effect of the root of the ball end mill.

[0029] When the ball end mill is driven by the equipment to rotate at high speed to mill the workpiece, the three-dimensional heat dissipation network formed by the internal cooling channel 11 that runs through the ball end mill and the cooling groove 4 that is connected to it in the tool holder section 1 provides efficient heat dissipation for the end mill. In addition, the spiral circuit 7 that is spirally set at the bottom of the outer side of the tool holder section 1 makes the coolant generate a swirling effect, which further accelerates heat dissipation and avoids heat accumulation that affects the end mill life. At the same time, the spiral reinforcing rib 8 set on the outer side of the neck transition section 3 makes the structural strength of the neck transition section 3 higher, reduces the risk of tool breakage and suppresses machining vibration. In addition, it works with the spiral cooling groove 4 that is also set on the outer side of the neck transition section 3 to continuously guide and remove chips. The arc-shaped lubrication guide groove 9 set on the outer side of the ball head 6 can guide the coolant to the root of the ball end mill for all-round cooling.

[0030] As a further implementation of this embodiment, such as Figure 1-4 As shown, a titanium nitride coating 5 is provided on the outer side of the ball head 6, and the titanium nitride coating 5 is evenly distributed on the outer side of the ball head 6. When the ball end mill performs milling on the workpiece, the titanium nitride coating 5 provided on the outer side of the ball head 6 and evenly distributed can significantly enhance the surface hardness of the ball head 6, thereby making the ball end mill more wear-resistant while ensuring milling accuracy.

[0031] Working principle: When using a ball end mill, the cutter body is stably mounted on the milling equipment drive mechanism through the keyway 2. After the milling operation begins, the ball end mill is driven by the drive equipment to rotate at high speed for milling. During milling, the cutter is efficiently cooled by the three-dimensional heat dissipation network formed by the internal cooling channel 11 and the cooling groove 4. The spiral circuit 7 further accelerates the heat dissipation by creating a swirling effect in the coolant, thus preventing heat accumulation from affecting the life of the cutter. At the same time, the reinforcing rib 8 increases the structural strength of the neck transition section 3. The reinforcing rib 8 and the cooling groove 4 work together to continuously guide and remove chips. The lubrication guide groove 9 guides the coolant to the root of the ball end mill's milling edge for all-round cooling. The titanium nitride coating 5 significantly enhances the surface hardness of the ball end 6 and makes it more wear-resistant, thus enabling stable and continuous milling of parts.

[0032] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A ball end mill, comprising a shank section (1), a neck transition section (3) at the bottom end of the shank section (1), and a ball end mill (6) at the bottom end of the neck transition section (3), characterized in that, Also includes: A cutting edge (12) is provided at the front end on one side and the rear end on the other side inside the ball head (6). A disassembly screw (13) is provided between the inside of the cutting edge (12) and the inside of the ball head (6). A continuous flow guiding structure is provided on the outside of the neck transition section (3); The internal cooling channel (11) is located at the middle position between the bottom end of the handle section (1), the neck transition section (3), and the top end of the ball head (6).

2. A ball end mill according to claim 1, characterized in that, The continuous flow guiding structure includes a cooling groove (4) and a reinforcing rib (8). The cooling groove (4) is located on the outside of the neck transition section (3), and the reinforcing rib (8) is located at the side gap of the cooling groove (4) on the outside of the neck transition section (3). The cooling groove (4) and the reinforcing rib (8) are spiral-shaped and extend from the top to the bottom of the neck transition section (3).

3. A ball end mill according to claim 1, characterized in that, The top of both ends of the outer side of the handle section (1) is provided with mounting keyways (2), and the mounting keyways (2) are symmetrically arranged on the outer side of the handle section (1).

4. A ball end mill according to claim 1, characterized in that, The bottom of the handle section (1) is provided with a heat dissipation upper channel (10), and the inner cooling channel (11) is connected to the heat dissipation upper channel (10), and the inner cooling channel (11) is perpendicular to the heat dissipation upper channel (10).

5. A ball end mill according to claim 1, characterized in that, A spiral circuit (7) is provided on the outer side of the handle section (1) near the bottom, and a lubrication guide groove (9) is provided on the outer side of the ball head (6). The lubrication guide groove (9) is arc-shaped and is arranged at equal intervals on the outer side of the ball head (6).

6. A ball end mill according to claim 1, characterized in that, The outer side of the ball head (6) is provided with a titanium nitride coating (5), and the titanium nitride coating (5) is uniformly distributed on the outer side of the ball head (6).

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