A whirlwind milling cutter and a whirlwind milling cutter assembly

Abstract

The utility model relates to machining tool technical field, especially a kind of cyclone cutter and cyclone cutter assembly. The cyclone cutter assembly includes adapter handle, cutter head and blade, cutter head is equipped with tool groove, tool groove includes the first installation groove for installing blade and the second installation groove for installing wedge, the first installation groove is communicated with the second installation groove;The side of wedge and blade abutment is first inclined plane, the side of blade and wedge abutment is second inclined plane, the inclination angle of first inclined plane and second inclined plane is complementary;Wedge is equipped with through hole that passes through its thickness direction, the inner wall of through hole has thread, cutter head is equipped with with through hole corresponding thread hole, threaded connection piece passes through through hole and is spun into thread hole, to fix wedge on cutter head. The utility model effectively solves the technical problem that the blade of cyclone cutter in the prior art needs to be holed to be assembled with cutter body, which leads to stress concentration zone easily formed around the hole of blade, reduces the service life of blade.

Description

Technical Field

[0001] This utility model relates to the field of machining tools, and in particular to a whirl milling cutter and a whirl milling cutter assembly. Background Technology

[0002] A whirl end mill is a high-efficiency machining tool that uses a carbide forming cutter mounted on a high-speed rotating cutter head to mill threads from a workpiece. Existing whirl end mills use compressed air for chip removal and cooling, but the cutter body itself lacks a corresponding cooling and chip removal structure. Splashing chips can easily damage the cutter body or other components. Furthermore, most existing whirl end mills use full-body carbide forming cutters, resulting in high tool costs. Damage to these cutters necessitates replacement of the entire unit, increasing operating costs.

[0003] To address the aforementioned issues, patent document CN208712962U discloses a whirlwind end mill. This whirlwind end mill includes a cutter body and a cutting edge. The cutting edge is mounted on the side of the cutter body. A cooling air channel is provided on the front side of the cutting edge, and a vent is located above the end of the cooling air channel, communicating with the cooling air channel. A through-hole is provided at the center of the cutter body, with mounting threads on the inner side of the through-hole. An annular groove is provided on the outer side of the through-hole at the lower end of the cutter body. This whirlwind end mill mounts the cutting edge to the cutter body via mounting threads, allowing for individual replacement of the cutting edge when damaged, eliminating the need to replace the entire tool and reducing operating costs. The cooling air channel on the front side of the cutting edge, with a vent at the end of the cooling air channel, connects to an external air compressor. Low-temperature compressed air is directly directed at the cutting edge for chip removal and cooling, improving the chip removal and cooling effect and thus protecting the cutter body.

[0004] However, the cutting edge (i.e. the insert) of the aforementioned cyclone milling cutter is assembled with the cutter body by mounting threads, which requires opening a smooth hole on the insert. The smooth hole will disrupt the continuity of the insert and form a stress concentration area at the edge of the smooth hole. When in the high-speed, intermittent cutting condition of cyclone milling, the insert is prone to vibration due to insufficient rigidity, and it is easy to accelerate the fatigue damage of the insert, affecting the surface quality of the machined surface and the tool life. Utility Model Content

[0005] This utility model provides a cyclone end mill to solve the technical problem that in the prior art, the insert of the cyclone end mill needs to be drilled with holes to be assembled with the cutter body, which leads to stress concentration areas forming around the holes and reducing the service life of the insert; the purpose of this utility model is also to provide a cyclone end mill assembly.

[0006] To solve the above problems, the whirlwind end mill provided by this utility model adopts the following technical solution: A cyclone end mill includes a cutter head and inserts. The cutter head is provided with a cutter groove, which includes a first mounting groove for mounting a blade and a second mounting groove for mounting a wedge, and the first mounting groove and the second mounting groove are connected. The side where the wedge abuts against the blade is a first inclined surface, and the side where the blade abuts against the wedge is a second inclined surface. The first inclined surface slopes downwards toward the second inclined surface, and the inclination angles of the first and second inclined surfaces are complementary. The wedge has a through hole extending through its thickness direction, and the inner wall of the through hole has threads. The cutter head has a threaded hole corresponding to the through hole. A threaded connector passes through the through hole and is screwed into the threaded hole to fix the wedge on the cutter head.

[0007] The beneficial effects of the whirlwind end mill provided by this utility model are: 1. By setting a tool groove including a first mounting groove for mounting the blade and a second mounting groove for mounting the wedge, and setting both the side where the wedge abuts against the blade and the side where the blade abuts against the wedge as inclined surfaces, with the first and second inclined surfaces having complementary inclination angles, the wedge tightly fits against the blade. Through the squeezing action of the wedge, the blade is effectively prevented from loosening during operation, ensuring the stability of the blade installation, thereby improving machining accuracy and product quality. In addition, by using the wedge to hold the blade in place, there is no need to open through holes in the blade, avoiding stress concentration areas on the blade caused by opening through holes, thus extending the service life of the blade. 2. A through hole is made on the wedge, which extends through its thickness and has threads on its inner wall. The cutter head has a threaded hole corresponding to the through hole. The wedge can be fixed on the cutter head by threading a threaded connector through the through hole and screwing it into the threaded hole. This fixing method is simple to operate. When it is necessary to replace the blade or maintain the blade, simply unscrew the threaded connector to easily remove the wedge and then operate the blade. This greatly improves the efficiency of installation and disassembly and saves time and labor costs. 3. Using threaded connectors to connect the wedge and the cutter head is a widely used and mature technology in the mechanical field. It has high reliability and stability, can withstand large cutting forces and vibrations, and ensures that the connection between the wedge and the cutter head will not loosen under long-term, high-intensity working conditions. This ensures the normal operation of the entire cyclone milling cutter and extends the tool's service life.

[0008] Through the above-mentioned design, this utility model effectively solves the technical problem in the prior art that the insert of a whirl milling cutter needs to be drilled with holes to be assembled with the cutter body, which leads to stress concentration areas forming around the holes and reducing the service life of the insert.

[0009] Furthermore, the first inclined surface includes a first abutting surface, an arc-shaped surface, and a second abutting surface connected sequentially along the horizontal direction. The first abutting surface, the arc-shaped surface, and the second abutting surface all extend vertically, and the opening of the arc-shaped surface faces the second inclined surface.

[0010] Beneficial effects: 1. The inclined surface is designed as a structure including a first contact surface, an arc-shaped surface, and a second contact surface, all extending vertically. Compared to a single planar inclined surface, this reduces the overall contact area between the wedge and the cutting tool, making the force exerted by the wedge on the cutting tool more concentrated. When the same force is applied, the pressure per unit area is increased, resulting in a more significant clamping effect of the wedge on the cutting tool. This better fixes the cutting tool in the tool groove, preventing it from loosening or shifting during cutting, thereby improving cutting stability and accuracy. 2. The first and second contact surfaces provide two stable support points for the wedge, while the arc-shaped surface connects and smoothly transitions between these two support points, making the entire inclined surface structure more reasonable and stable. During cutting, even under large impact forces and vibrations, the wedge can maintain good shape and dimensional accuracy and is less prone to deformation. 3. The arc-shaped surface design also avoids the possibility of the middle part of the first inclined surface bulging due to manufacturing errors, uneven force, etc., thus avoiding poor fixing effect on the cutting tool caused by the middle part of the first inclined surface, which could lead to the cutting tool wobbling from side to side.

[0011] Furthermore, both the side of the first abutting surface opposite to the arc-shaped surface and the side of the second abutting surface opposite to the arc-shaped surface have chamfered surfaces that extend vertically.

[0012] Furthermore, the chamfered surface is a planar chamfered surface.

[0013] Furthermore, the inclination angle of the first inclined plane is 15°.

[0014] Furthermore, the through hole includes a smooth hole section and a threaded hole section connected sequentially from top to bottom, and the inner wall of the threaded hole section has threads.

[0015] Furthermore, the radial dimension of the optical hole segment is greater than the radial dimension of the threaded hole segment.

[0016] Beneficial effects: The smooth hole section is located at the top and has a large radial dimension. When assembling threaded fasteners, the smooth hole section can play a guiding role, making it easier and more accurate to insert the fastener into the through hole, reducing assembly difficulties and damage to the fastener caused by misalignment, and improving assembly efficiency.

[0017] Furthermore, there are multiple cutting grooves, which are arranged at intervals along the circumference of the cutting disc.

[0018] To solve the above problems, the cyclone milling cutter assembly provided by this utility model adopts the following technical solution: A whirlwind end mill assembly includes an adapter shank and a whirlwind end mill, wherein the whirlwind end mill is the aforementioned whirlwind end mill; The cyclone milling cutter includes a cutter head and inserts: The cutter head is provided with a cutter groove, which includes a first mounting groove for mounting a blade and a second mounting groove for mounting a wedge, and the first mounting groove and the second mounting groove are connected. The side where the wedge abuts against the blade is a first inclined surface, and the side where the blade abuts against the wedge is a second inclined surface. The first inclined surface slopes downwards toward the second inclined surface, and the inclination angles of the first and second inclined surfaces are complementary. The wedge has a through hole extending through its thickness direction, and the inner wall of the through hole has threads. The cutter head has a threaded hole corresponding to the through hole. A threaded connector passes through the through hole and is screwed into the threaded hole to fix the wedge on the cutter head.

[0019] The beneficial effects of the cyclone milling cutter assembly provided by this utility model are: 1. By setting a tool groove including a first mounting groove for mounting the blade and a second mounting groove for mounting the wedge, and setting both the side where the wedge abuts against the blade and the side where the blade abuts against the wedge as inclined surfaces, with the first and second inclined surfaces having complementary inclination angles, the wedge tightly fits against the blade. Through the squeezing action of the wedge, the blade is effectively prevented from loosening during operation, ensuring the stability of the blade installation, thereby improving machining accuracy and product quality. In addition, by using the wedge to hold the blade in place, there is no need to open through holes in the blade, avoiding stress concentration areas on the blade caused by opening through holes, thus extending the service life of the blade. 2. A through hole is made on the wedge, which extends through its thickness and has threads on its inner wall. The cutter head has a threaded hole corresponding to the through hole. The wedge can be fixed on the cutter head by threading a threaded connector through the through hole and screwing it into the threaded hole. This fixing method is simple to operate. When it is necessary to replace the blade or maintain the blade, simply unscrew the threaded connector to easily remove the wedge and then operate the blade. This greatly improves the efficiency of installation and disassembly and saves time and labor costs. 3. Using threaded connectors to connect the wedge and the cutter head is a widely used and mature technology in the mechanical field. It has high reliability and stability, can withstand large cutting forces and vibrations, and ensures that the connection between the wedge and the cutter head will not loosen under long-term, high-intensity working conditions. This ensures the normal operation of the entire cyclone milling cutter and extends the tool's service life.

[0020] Through the above-mentioned design, this utility model effectively solves the technical problem in the prior art that the insert of a whirl milling cutter needs to be drilled with holes to be assembled with the cutter body, which leads to stress concentration areas forming around the holes and reducing the service life of the insert.

[0021] Furthermore, the adapter handle can be detachably connected to the cyclone milling cutter or integrally formed.

[0022] Furthermore, the first inclined surface includes a first abutting surface, an arc-shaped surface, and a second abutting surface connected sequentially along the horizontal direction. The first abutting surface, the arc-shaped surface, and the second abutting surface all extend vertically, and the opening of the arc-shaped surface faces the second inclined surface.

[0023] Beneficial effects: 1. The inclined surface is designed as a structure including a first contact surface, an arc-shaped surface, and a second contact surface, all extending vertically. Compared to a single planar inclined surface, this reduces the overall contact area between the wedge and the cutting tool, making the force exerted by the wedge on the cutting tool more concentrated. When the same force is applied, the pressure per unit area is increased, resulting in a more significant clamping effect of the wedge on the cutting tool. This better fixes the cutting tool in the tool groove, preventing it from loosening or shifting during cutting, thereby improving cutting stability and accuracy. 2. The first and second contact surfaces provide two stable support points for the wedge, while the arc-shaped surface connects and smoothly transitions between these two support points, making the entire inclined surface structure more reasonable and stable. During cutting, even under large impact forces and vibrations, the wedge can maintain good shape and dimensional accuracy and is less prone to deformation. 3. The arc-shaped surface design also avoids the possibility of the middle part of the first inclined surface bulging due to manufacturing errors, uneven force, etc., thus avoiding poor fixing effect on the cutting tool caused by the middle part of the first inclined surface, which could lead to the cutting tool wobbling from side to side.

[0024] Furthermore, both the side of the first abutting surface opposite to the arc-shaped surface and the side of the second abutting surface opposite to the arc-shaped surface have chamfered surfaces that extend vertically.

[0025] Furthermore, the chamfered surface is a planar chamfered surface.

[0026] Furthermore, the inclination angle of the first inclined plane is 15°.

[0027] Furthermore, the through hole includes a smooth hole section and a threaded hole section connected sequentially from top to bottom, and the inner wall of the threaded hole section has threads.

[0028] Furthermore, the radial dimension of the optical hole segment is greater than the radial dimension of the threaded hole segment.

[0029] Beneficial effects: The smooth hole section is located at the top and has a large radial dimension. When assembling threaded fasteners, the smooth hole section can play a guiding role, making it easier and more accurate to insert the fastener into the through hole, reducing assembly difficulties and damage to the fastener caused by misalignment, and improving assembly efficiency.

[0030] Furthermore, there are multiple cutting grooves, which are arranged at intervals along the circumference of the cutting disc. Attached Figure Description

[0031] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein: Figure 1 This is a schematic diagram of the cyclone milling cutter assembly provided by this utility model; Figure 2 This is a schematic diagram of the structure of the whirl milling cutter provided by this utility model, showing the contact between the cutting blade and the wedge block. Figure 3 This is a schematic diagram of the wedge block in the cyclone milling cutter provided by this utility model; Figure 4 This is a side view of the whirlwind end mill provided by this utility model; Figure 5 This is a top view of the whirlwind end mill provided by this utility model.

[0032] Explanation of reference numerals in the attached figures: 1. Adapter handle; 2. Cutter head; 3. Blade; 4. Wedge; 5. Through hole; 6. First abutment surface; 7. Arc-shaped surface; 8. Second abutment surface; 9. Chamfered surface; 10. Arc-shaped surface; 11. Adapter section; 12. Screw hole. Detailed Implementation

[0033] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0034] Embodiments of the cyclone milling cutter assembly provided by this utility model: like Figures 1 to 5 As shown, the cyclone milling cutter assembly includes an adapter shank 1 and a cyclone milling cutter. The adapter shank 1 and the cyclone milling cutter can be detachably connected or integrally formed. The cyclone milling cutter includes a cutter head 2 and inserts 3. The cutter head 2 has a cutter groove, in which inserts 3 and wedges 4 are installed.

[0035] Regarding the cutting groove: The cutting groove includes a first mounting groove and a second mounting groove that are connected to each other. The first mounting groove is used to install the cutting blade 3, and the second mounting groove is used to install the wedge block 4.

[0036] Regarding wedge 4. For example... Figure 2 and Figure 3As shown, the side of the wedge 4 that abuts against the blade 3 is the first inclined surface, and the side of the blade 3 that abuts against the wedge 4 is the second inclined surface. The first inclined surface slopes downwards toward the second inclined surface, and the inclination angles of the first and second inclined surfaces are complementary. The side of the wedge 4 that is away from the first inclined surface is an arc surface 10. A through hole 5 is provided on the wedge 4, penetrating its thickness direction. The inner wall of the through hole 5 has threads. The cutter head 2 has a threaded hole corresponding to the through hole 5. A threaded connector passes through the through hole 5 and is screwed into the threaded hole to fix the wedge 4 on the cutter head 2. The threaded connector is a bolt, screw, etc.

[0037] In this embodiment, the inclination angle of the first inclined plane is 15°.

[0038] In this embodiment, as Figure 3 As shown, the first inclined surface includes a first abutting surface 6, an arc-shaped surface 7, and a second abutting surface 8 connected sequentially in the horizontal direction. The first abutting surface 6, the arc-shaped surface 7, and the second abutting surface 8 all extend vertically. The side of the first abutting surface 6 away from the arc-shaped surface 7 and the side of the second abutting surface 8 away from the arc-shaped surface 7 both have a chamfered surface 9, and the chamfered surface 9 extends vertically. The opening of the arc-shaped surface 7 faces the second inclined surface.

[0039] In this embodiment, the chamfered surface 9 is a planar chamfered surface 9.

[0040] In this embodiment, the through hole 5 includes a smooth hole section and a threaded hole section connected sequentially from top to bottom. The inner wall of the threaded hole section has threads, and the radial dimension of the smooth hole section is greater than the radial dimension of the threaded hole section.

[0041] Regarding the cutter head 2: The cutter head 2 has multiple cutter grooves, which are spaced apart along the circumference of the cutter head 2. In this embodiment, there are six cutter grooves, which are evenly spaced along the circumference of the cutter head 2.

[0042] It should be noted that in this embodiment, the adapter handle 1 is detachably connected to the cutter head 2, and the adapter handle 1 has an adapter interface for connecting to the cutter head 2, such as... Figure 4 As shown, the cutter head 2 is provided with an adapter section 11 that matches the adapter interface. The adapter section 11 is installed in the adapter interface to achieve a detachable connection between the adapter handle 1 and the cutter head 2. In other embodiments, the adapter handle 1 and the cutter head 2 are integrally machined.

[0043] In addition, such as Figure 4 As shown, the side of the cutter head 2 is provided with screw holes 12 at intervals. An adjusting member is screwed into the screw hole 12 to adjust the radial distance between the two opposing blades 3 by adjusting the degree of screwing of the adjusting member into the screw hole 12.

[0044] The working principle of the cyclone milling cutter assembly provided by this utility model is as follows: When installing the insert 3, first install the insert 3 in the first mounting groove, then install the wedge 4 in the second mounting groove. After installation, screw the threaded connector into the through hole 5 to fix the insert 3 on the cutter head 2. Repeat the above operation until all inserts 3 are fixedly installed on the cutter head 2. After the insert 3 is installed, the adapter shank 1 can be installed on the spindle, and the cyclone milling cutter can be used to process lead screws, etc.

[0045] Embodiments of the whirlwind end mill provided by this utility model: The whirl end mill is exactly the same as the whirl end mill described above, so it will not be repeated here.

[0046] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0047] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A cyclone milling cutter, comprising a cutter head and inserts, characterized in that: The cutter head is provided with a cutter groove, which includes a first mounting groove for mounting a blade and a second mounting groove for mounting a wedge, and the first mounting groove and the second mounting groove are connected. The side where the wedge abuts against the blade is a first inclined surface, and the side where the blade abuts against the wedge is a second inclined surface. The first inclined surface slopes downwards toward the second inclined surface, and the inclination angles of the first and second inclined surfaces are complementary. The wedge has a through hole extending through its thickness direction, and the inner wall of the through hole has threads. The cutter head has a threaded hole corresponding to the through hole. A threaded connector passes through the through hole and is screwed into the threaded hole to fix the wedge on the cutter head.

2. The whirlwind end mill according to claim 1, characterized in that: The first inclined surface includes a first abutting surface, an arc-shaped surface, and a second abutting surface connected in sequence along the horizontal direction. The first abutting surface, the arc-shaped surface, and the second abutting surface all extend vertically, and the opening of the arc-shaped surface faces the second inclined surface.

3. The whirlwind end mill according to claim 2, characterized in that: Both the first abutting surface and the second abutting surface have chamfered surfaces on the side opposite to the arc-shaped surface, with the chamfered surfaces extending vertically.

4. The whirlwind end mill according to claim 3, characterized in that: The chamfered surface is a planar chamfered surface.

5. The whirlwind end mill according to any one of claims 1 to 4, characterized in that: The inclination angle of the first inclined plane is 15°.

6. The whirlwind end mill according to any one of claims 1 to 4, characterized in that: The through hole includes a smooth hole section and a threaded hole section connected sequentially from top to bottom, and the inner wall of the threaded hole section has threads.

7. The whirlwind end mill according to claim 6, characterized in that: The radial dimension of the aperture section is greater than the radial dimension of the threaded hole section.

8. The whirlwind end mill according to any one of claims 1 to 4, characterized in that: The number of the cutting grooves is multiple, and the multiple cutting grooves are arranged at intervals along the circumference of the cutting disc.

9. A whirlwind end mill assembly, comprising an adapter shank and a whirlwind end mill, characterized in that, The whirl milling cutter is the whirl milling cutter according to any one of claims 1 to 8.

10. The cyclone milling cutter assembly according to claim 9, characterized in that, The adapter handle can be detachably connected to the cyclone milling cutter or integrally formed.

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