High-efficiency carbide milling cutter with in-channel cooling channel

Abstract

The utility model discloses a high -efficient hard alloy milling cutter of taking in -cooling channel, including cutter head, sword stem, the outside of cutter head is equipped with several groups of convenient installation groove, the inside of convenient installation groove all is equipped with a group of sword groove, the inside of several groups of sword grooves all is hinged with a group of blade, the middle of cutter head is equipped with a group of installation groove of through -type, and the cutter head is through the installation groove and is installed in one end of sword stem, and the lower part of outer camber surface of cutter head is equipped with several groups of flow guide groove, through setting up flow guide groove in the lower part of outer camber surface of cutter head, and flow guide groove is communicated with convenient installation groove through air inlet hole, forms in -cooling channel, during cutting process, the cooling medium of outside can gather and enter air inlet hole through flow guide groove, directly acts on the cutting area of blade, and in time takes away the heat that blade friction produces, avoids the temperature rise that external air cannot enter when cutter head gradually goes into the inside of workpiece and mills, improves the heat dissipation efficiency of milling cutter.

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, specifically to a high-efficiency carbide end mill with an internal cooling channel. Background Technology

[0002] A milling cutter is a rotary cutting tool used for milling operations. It cuts the workpiece material through the rotational motion of its cutting teeth to remove excess material and form a specific surface or shape. As a commonly used cutting tool, the performance of the milling cutter directly affects the machining efficiency, workpiece accuracy, and surface quality. Carbide milling cutters, due to their high strength, high hardness, and good wear resistance, are widely used in the milling of various metal materials. They are classified according to function and application as: face milling cutters, cylindrical milling cutters, end mills, etc. Among them, face milling cutters have a larger diameter and circular inserts, and are used for high-speed milling of large flat surfaces. This utility model mainly relates to face milling cutters.

[0003] In the high-speed cutting process of traditional carbide end mills, the cutter head and inserts gradually increase in depth of milling, and there is a possibility that the cutter head and inserts will enter the interior of the workpiece. A lot of frictional heat will be generated between the cutter teeth and the workpiece. If heat is not dissipated in time, it will not only lead to accelerated wear of the inserts and shorten their service life, but may also affect the machining accuracy due to thermal deformation. Therefore, we need to propose a high-efficiency carbide end mill with an internal cooling channel. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency carbide end mill with an internal cooling channel. The cutter head is mounted on one end of the cutter shank via a mounting slot, and several sets of inserts are quickly installed via several sets of convenient mounting slots and cutter slots on the cutter head, thereby achieving rapid assembly and installation of the end mill. In use, the other end of the cutter shank is fixed to one end of the milling machine. When the cutter head or inserts are worn, they can be quickly replaced. By setting a guide groove on the lower part of the outer arc surface of the cutter head, the guide groove is connected to the convenient mounting slot through the air inlet to form an internal cooling channel. During the cutting process, the external cooling medium can be collected through the guide groove and enter the air inlet, directly acting on the cutting area of ​​the insert, and promptly removing the heat generated by friction, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency carbide end mill with an internal cooling channel, comprising a cutter head and a cutter shank. The outer side of the cutter head is provided with several sets of mounting slots, and the inner side of each mounting slot is provided with a set of cutting grooves. Each set of cutting grooves is fitted with a set of cutting inserts. A set of mounting slots is provided through the middle of the cutter head, and the cutter head is fitted onto one end of the cutter shank through the mounting slots. Several sets of guide grooves are provided on the lower part of the outer arc surface of the cutter head, and the interior of each set of guide grooves is connected to a set of mounting slots through a set of air inlets.

[0006] Preferably, each of the outer arc surfaces of the cutter head is provided with a set of heat dissipation grooves, and the sets of heat dissipation grooves are all connected to the mounting grooves.

[0007] Preferably, the several groups of the guide channels are spirally opened, and the number of the several groups of guide channels corresponds to the number of the several groups of casual clothing slots.

[0008] Preferably, a set of limiting grooves is provided on the inner sidewalls of several sets of blade grooves, and a set of limiting blocks is fixedly installed on one side of several sets of blades.

[0009] Preferably, the inner sidewalls of several sets of blade grooves are provided with two sets of first locking grooves, and the several sets of blades are fixed by threaded connection to the first locking grooves through two sets of first bolts.

[0010] Preferably, the top of the tool holder is provided with a second locking groove. After the tool disc is fitted onto one end of the tool holder, it is fixed by a second bolt threaded into the second locking groove.

[0011] Preferably, the bottom of the cutter head has two sets of concave grooves, and the outer arc surface of the cutter bar is fixedly fitted with two sets of locking blocks that engage with the concave grooves.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention features a guide groove on the lower part of the outer arc surface of the cutter head. The guide groove is connected to the mounting slot through the air inlet to form an internal cooling channel. During the cutting process, the external cooling medium can be gathered through the guide groove and enter the air inlet to directly act on the cutting area of ​​the cutting tool, thus promptly removing the heat generated by friction. This prevents the external air from being unable to enter and causing the temperature to rise when the cutter head gradually penetrates deeper into the workpiece for milling, thereby improving the heat dissipation efficiency of the milling cutter.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 A schematic diagram of the structure of the guide channel of this utility model is provided;

[0017] Figure 3 A schematic diagram of the tool groove structure of this utility model is provided;

[0018] Figure 4 A structural schematic diagram of the concave groove of this utility model is provided;

[0019] Figure 5 This is a schematic diagram of the structure of the air inlet of this utility model.

[0020] In the diagram: 1. Cutter head; 2. Mounting slot; 3. Cutter groove; 4. Blade; 5. Cutter bar; 6. Limiting groove; 7. Limiting block; 8. First locking groove; 9. First bolt; 10. Guide groove; 11. Air inlet; 12. Mounting groove; 13. Heat dissipation groove; 14. Second locking groove; 15. Second bolt; 16. Concave groove; 17. Locking block. 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.

[0022] Please see Figures 1-5 This utility model provides a high-efficiency carbide end mill with an internal cooling channel, including a cutter head 1 and a cutter shank 5. The outer side of the cutter head 1 is provided with several sets of mounting slots 2, and the inner side of each mounting slot 2 is provided with a set of cutting grooves 3. Each set of cutting grooves 3 is fitted with a set of cutting inserts 4. A set of mounting grooves 12 is provided through the middle of the cutter head 1. The cutter head 1 is fitted onto one end of the cutter shank 5 through the mounting grooves 12. Several sets of guide grooves 10 are provided on the lower part of the outer arc surface of the cutter head 1. The interior of each set of guide grooves 10 is connected to a set of mounting slots 2 through a set of air inlets 11.

[0023] In use, the cutter head 1 is fitted onto one end of the cutter shank 5 through the mounting slot 12, and several sets of inserts 4 are quickly installed through several sets of mounting slots 2 and cutter slots 3 opened in the cutter head 1, thereby realizing the quick assembly and installation of the milling cutter. When in use, the other end of the cutter shank 5 can be fixed to one end of the milling machine. When the cutter head 1 or inserts 4 are worn, they can be quickly replaced. By setting a guide groove 10 on the lower part of the outer arc surface of the cutter head 1, the guide groove 10 is connected to the mounting slot 2 through the air inlet 11 to form an internal cooling channel. During the cutting process, the external cooling medium can be gathered through the guide groove 10 and enter the air inlet 11, directly acting on the cutting area of ​​the inserts 4, and timely removing the heat generated by friction. This prevents the external air from being unable to enter when the cutter head 1 gradually penetrates into the workpiece for milling, thus improving the heat dissipation efficiency of the milling cutter.

[0024] Each outer arc surface of the cutter head 1 is provided with a set of heat dissipation grooves 13. Several sets of heat dissipation grooves 13 are connected to the mounting grooves 12. By setting the heat dissipation grooves 13, the heat dissipation area of ​​the cutter head 1 is further increased. When the cutter head 1 rotates, the airflow passes through the inside of the heat dissipation grooves 13, which accelerates the heat dissipation efficiency of the cutter head 1.

[0025] Several sets of guide grooves 10 are spirally opened, and the number of sets of guide grooves 10 corresponds to the number of sets of pocket slots 2. By opening the guide grooves 10 in a spiral shape, the external airflow can be guided into the interior of the guide grooves 10 and converge along the top of the inner cavity of the guide grooves 10. Finally, part of the high-speed airflow from the outside is discharged into the interior of the pocket slot 2 through the air inlet 11, blowing on the pocket slot 2 and the blade 4, thereby accelerating the heat dissipation efficiency of the blade disc 1 and the blade 4.

[0026] A set of limiting grooves 6 are provided on the inner sidewalls of several sets of blade grooves 3. A set of limiting blocks 7 are fixedly installed on one side of several sets of blades 4. The cooperation between the limiting blocks 7 and the limiting grooves 6 can realize the rapid positioning of the blades 4, improve the accuracy and stability of the blade installation, and can share the shear stress of the blades 4 borne by the first screw during rotation, avoiding the situation where the first screw is subjected to excessive force and bent deformation.

[0027] Two sets of first locking grooves 8 are provided on the inner sidewalls of several sets of tool grooves 3. Several sets of blades 4 are fixed by threaded connection to the first locking grooves 8 through two sets of first bolts 9. The double bolt fixing structure can enhance the firmness of the connection between the blades 4 and the tool grooves 3, and prevent the blades 4 from loosening during milling. When the blades 4 are worn and need to be replaced, the blades 4 can be released by the first bolts 9 to facilitate the replacement of the blades 4.

[0028] The top of the cutter bar 5 is provided with a second locking groove 14. After the cutter disc 1 is fitted onto one end of the cutter bar 5, it is fixed by threaded connection between the second bolt 15 and the second locking groove 14 to ensure a stable connection between the cutter disc 1 and the cutter bar 5, preventing the cutter disc 1 from falling off one end of the cutter bar 5. The tightening direction of the second screw is opposite to the rotation direction of the cutter bar 5 to prevent the second screw from loosening during cutting.

[0029] The bottom of the cutter head 1 has two sets of concave grooves 16. The outer arc surface of the tool holder 5 is fixedly mounted with two sets of locking blocks 17 that fit into the concave grooves 16. The engagement of the locking blocks 17 with the concave grooves 16 can realize the pre-positioning of the cutter head 1 and the tool holder 5, which facilitates the subsequent bolt fixing operation, while improving the load-bearing capacity of the overall structure and preventing relative rotation between the cutter head 1 and the tool holder 5, thus improving the stability of milling.

[0030] In practical use: First, fix the cutter head 1 to one end of the cutter bar 5 with the second bolt 15. Then, install and fix the other end of the cutter bar 5 on the spindle of the milling machine to complete the overall clamping of the milling cutter. According to the processing requirements, position the matching insert 4 with the limiting groove 6 in the cutter groove 3 through the limiting block 7. Then, fix the insert 4 in the cutter groove 3 with the first bolt 9. During the milling process, the milling bar rotates at high speed, and the cutter head 1 drives the insert 4 to cut the workpiece. At the same time, the cold air from the outside is gathered through the spiral guide groove 10 and sprayed directly onto the cutting area of ​​the insert 4 through the air inlet 11 to remove the cutting heat in time. Meanwhile, some of the heat generated by the cutter head 1 is quickly dissipated into the air through the heat dissipation groove 13 to achieve dual heat dissipation. When the insert 4 needs to be replaced, simply loosen the first bolt 9 to take out the worn insert 4 from the portable groove 2, replace the new insert 4, and then tighten the bolt again. The operation is convenient.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency carbide end mill with an internal cooling channel, characterized in that: The tool includes a cutter head (1) and a cutter bar (5). The cutter head (1) has several sets of mounting slots (2) on its outer side. Each mounting slot (2) has a set of cutting grooves (3) on its inner side. Each set of cutting grooves (3) has a set of blades (4) bolted inside. The cutter head (1) has a set of mounting grooves (12) through its middle section. The cutter head (1) is fitted onto one end of the cutter bar (5) through the mounting grooves (12). The cutter head (1) has several sets of guide grooves (10) on its lower outer arc surface. Each set of guide grooves (10) is connected to a set of mounting slots (2) through a set of air inlets (11).

2. The high-efficiency carbide end mill with internal cooling channel according to claim 1, characterized in that: The outer arc surface of the cutter head (1) is provided with a set of heat dissipation grooves (13), and several sets of heat dissipation grooves (13) are connected to the mounting groove (12).

3. The high-efficiency carbide end mill with internal cooling channel according to claim 1, characterized in that: Several sets of the flow channels (10) are spirally opened, and the number of the several sets of flow channels (10) corresponds to the number of the several sets of pocket slots (2).

4. The high-efficiency carbide end mill with internal cooling channel according to claim 1, characterized in that: A set of limiting grooves (6) are provided on the inner sidewalls of several sets of blade grooves (3), and a set of limiting blocks (7) are fixedly installed on one side of several sets of blades (4).

5. A high-efficiency carbide end mill with an internal cooling channel according to claim 1, characterized in that: The inner sidewalls of several sets of blade grooves (3) are provided with two sets of first locking grooves (8), and several sets of blades (4) are fixed by threaded connection to the first locking grooves (8) by two sets of first bolts (9).

6. A high-efficiency carbide end mill with an internal cooling channel according to claim 1, characterized in that: The top of the cutter bar (5) is provided with a second locking groove (14). After the cutter disc (1) is fitted onto one end of the cutter bar (5), it is fixed by threaded connection between the second bolt (15) and the second locking groove (14).

7. A high-efficiency carbide end mill with an internal cooling channel according to claim 1, characterized in that: The bottom of the cutter head (1) has two sets of concave grooves (16), and the outer arc surface of the cutter bar (5) is fixedly fitted with two sets of locking blocks (17) that fit into the concave grooves (16).

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