Combined plane cutting high-hardness milling cutter

Abstract

The utility model discloses a combined plane cutting high-hardness milling cutter in the technical field of milling cutters, which comprises a milling cutter head, an alloy blade and a milling cutter handle, a chip groove is arranged on the outer side wall of the milling cutter head, a cutter groove is arranged on the inner wall of the chip groove, the alloy blade is arranged in the cutter groove, and a connecting hole is arranged on the lower wall of the milling cutter head. A connecting rod is installed on the upper wall of the milling cutter handle and inserted into the connecting hole, an annular groove is formed in the side wall of the milling cutter handle, a cooling mechanism is rotatably installed on the outer side wall of the annular groove, a liquid inlet hole is formed in the inner wall of the annular groove and penetrates through the side wall of the connecting rod, and a liquid outlet hole is formed in the side wall of the milling cutter head. According to the device, the liquid inlet hole and the liquid outlet hole are formed in the milling cutter handle and the milling cutter head, so that cooling liquid can be conveyed into the milling cutter head and directly acts on the alloy blade, the heat of the alloy blade in the cutting process is reduced, and the service life of the alloy blade is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, specifically a combined planar cutting high-hardness milling cutter. Background Technology

[0002] A milling cutter is a rotating cutting tool with one or more cutting teeth used for milling. When the milling cutter is working, each cutting tooth cuts off the excess material of the workpiece in turn. It is mainly used to machine planes, steps, grooves, shaped surfaces and cut off workpieces on a milling machine.

[0003] Face milling cutters are mainly used for machining planes on vertical milling machines, end milling machines, or gantry milling machines. They have cutting teeth on both the end face and the circumference. During high-speed machining, existing face milling cutters generate a lot of heat due to the milling and friction between the insert and the workpiece. The heat dissipation of existing milling cutters is not good enough, which affects the machining accuracy, reduces the machining capacity of the insert, and eventually damages the insert. Utility Model Content

[0004] The purpose of this invention is to provide a combined planar cutting high-hardness milling cutter to solve the problem mentioned in the background art that existing planar milling cutters generate a lot of heat during rapid machining due to milling and friction between the insert and the workpiece. The heat dissipation conditions of existing milling cutters are not good enough, which affects the machining accuracy, leads to a decrease in the machining capacity of the insert, and ultimately damages the insert.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined planar cutting high-hardness milling cutter, comprising a milling cutter head, an alloy insert and a milling cutter shank, wherein a chip removal groove is formed on the outer side wall of the milling cutter head, a tool groove is formed on the inner wall of the chip removal groove, and the alloy insert is installed in the tool groove;

[0006] The lower wall of the milling cutter head has a connecting hole, and the upper wall of the milling cutter shank has a connecting rod installed. The connecting rod is inserted into the connecting hole. The side wall of the milling cutter shank has an annular groove. A cooling mechanism is rotatably installed on the outer wall of the annular groove. The inner wall of the annular groove has a liquid inlet hole, which penetrates the side wall of the connecting rod. The side wall of the milling cutter head has a liquid outlet hole, which penetrates the inner wall of the milling cutter head and communicates with the liquid inlet hole. The liquid outlet hole is located in the chip removal groove.

[0007] In a preferred embodiment of this invention, the cooling mechanism includes a rotating ring, a connecting sleeve, and an inlet pipe. The rotating ring is rotatably mounted in an annular groove. The connecting sleeve is inserted into the side wall of the rotating ring. One end of the inlet pipe is inserted into the connecting sleeve, and the other end of the inlet pipe is connected to an external coolant pipe.

[0008] As a preferred embodiment of this utility model, the inner wall of the liquid outlet hole is provided with an internal thread, and a threaded sleeve is screwed into the liquid outlet hole by the thread, and the threaded sleeve can be inserted into the liquid inlet hole.

[0009] As a preferred embodiment of this utility model, the inner wall of the blade groove is provided with a threaded hole, and the middle part of the side wall of the alloy blade is provided with a through hole. A positioning bolt is inserted into the through hole and can be screwed into the threaded hole.

[0010] As a preferred embodiment of this utility model, the lower wall of the milling cutter head is provided with a positioning groove, and the upper wall of the milling cutter shank is provided with a positioning block, which can be inserted into the positioning groove.

[0011] As a preferred embodiment of this invention, a chip-blocking mesh is installed on the inner wall of the threaded sleeve.

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

[0013] This device, by setting inlet and outlet holes in its milling cutter shank and milling cutter head, enables the coolant to be delivered into the milling cutter head and act directly on the carbide insert, thereby reducing the heat of the carbide insert during the cutting process and extending the service life of the carbide insert.

[0014] In addition, this device is equipped with a threaded sleeve in the liquid outlet hole, which can further reinforce the connection between the milling cutter head and the milling cutter shank, ensuring the stability of the connection between the two, and at the same time, it can also prevent the liquid inlet hole and the liquid outlet hole from being misaligned, which would affect the discharge of coolant. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this patent;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the milling cutter shank of this patent;

[0017] Figure 3 This is a schematic diagram of the threaded sleeve structure of this patent.

[0018] In the diagram: 1. Milling cutter head, 2. Carbide insert, 3. Milling cutter shank, 4. Chip removal groove, 5. Tool groove, 6. Connecting hole, 7. Connecting rod, 8. Annular groove, 9. Cooling mechanism, 91. Rotating ring, 92. Connecting sleeve, 93. Liquid inlet pipe, 10. Liquid inlet hole, 11. Liquid outlet hole, 12. Threaded sleeve, 13. Threaded hole, 14. Through hole, 15. Positioning bolt, 16. Positioning groove, 17. Positioning block, 19. Chip guard. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-3 This utility model provides a technical solution:

[0021] In this technical solution, a combined planar cutting high-hardness milling cutter includes a milling cutter head 1, an alloy insert 2 and a milling cutter shank 3. The outer side wall of the milling cutter head 1 is provided with a chip removal groove 4, and the inner wall of the chip removal groove 4 is provided with a tool groove 5. The alloy insert 2 is installed in the tool groove 5.

[0022] The lower wall of the milling cutter head 1 is provided with a connecting hole 6, and the upper wall of the milling cutter shank 3 is provided with a connecting rod 7. The connecting rod 7 is inserted into the connecting hole 6. The side wall of the milling cutter shank 3 is provided with an annular groove 8. The outer side wall of the annular groove 8 is rotatably mounted with a cooling mechanism 9. The inner wall of the annular groove 8 is provided with a liquid inlet hole 10. The liquid inlet hole 10 penetrates the side wall of the connecting rod 7. The side wall of the milling cutter head 1 is provided with a liquid outlet hole 11. The liquid outlet hole 11 penetrates the inner wall of the milling cutter head 1 and is connected to the liquid inlet hole 10. The liquid outlet hole 11 is located in the chip removal groove 4.

[0023] In this technical solution, the alloy insert 2 proposed in this paper is made of tungsten steel, which has the advantages of high hardness and high precision. When using this device, the alloy insert 2 is first installed on the milling cutter head 1, then the milling cutter head 1 is installed on the milling cutter shank 3, and finally the milling cutter shank 3 together with the milling cutter head 1 is installed on the spindle of the machine tool. Then the spindle drives the device to rotate and mill the surface of the workpiece.

[0024] Meanwhile, after the milling cutter head 1 is installed in the milling cutter shank 3, its inlet hole 10 and outlet hole 11 are in a connected state. Coolant is injected into the inlet hole 10 through the cooling mechanism 9, and the coolant can flow out through the outlet hole 11 and directly act on the surface of the alloy insert 2, reducing the temperature of the alloy insert 2, thereby extending the service life of the alloy insert 2 and improving the processing efficiency of this device.

[0025] In some technical solutions, the cooling mechanism 9 includes a rotating ring 91, a connecting sleeve 92, and an inlet pipe 93. The rotating ring 91 is rotatably installed in the annular groove 8. The connecting sleeve 92 is inserted into the side wall of the rotating ring 91. One end of the inlet pipe 93 is inserted into the connecting sleeve 92, and the other end of the inlet pipe 93 is connected to an external coolant pipe.

[0026] In this technical solution, because its rotating ring 91 can rotate within the annular groove 8, its rotating ring 91 does not rotate with the milling cutter shank 3, thereby avoiding entanglement of the coolant pipe. The coolant pipe can be pumped into the inlet pipe 93 by an external pump, and then injected into the annular groove 8 through the inlet pipe 93, and then flow into the outlet hole 11 through the inlet hole 10 and then sprayed out.

[0027] In some technical solutions, the inner wall of the liquid outlet hole 11 is provided with internal threads, and a threaded sleeve 12 is screwed into the liquid outlet hole 11 through the threads. The threaded sleeve 12 can be inserted into the liquid inlet hole 10.

[0028] In this technical solution, the threaded sleeve 12 can further reinforce the connection between the milling cutter head 1 and the milling cutter shank 3, ensuring the stability of the connection between the two, and at the same time, it can also prevent the inlet hole 10 and the outlet hole 11 from being misaligned, which would affect the discharge of coolant.

[0029] In some technical solutions, the inner wall of the blade groove 5 is provided with a threaded hole 13, and the middle part of the side wall of the alloy blade 2 is provided with a through hole 14. A positioning bolt 15 is inserted into the through hole 14 and can be screwed into the threaded hole 13.

[0030] In some technical solutions, the lower wall of the milling cutter head 1 is provided with a positioning groove 16, and the upper wall of the milling cutter shank 3 is provided with a positioning block 17, which can be inserted into the positioning groove 16.

[0031] In some technical solutions, a chip guard 18 is installed on the inner wall of the threaded sleeve 12.

[0032] In this technical solution, the chip guard 18 can prevent iron chips from entering the threaded sleeve 12 during milling, thus avoiding blockage of the internal channel of the threaded sleeve 12 and affecting the flow of coolant.

[0033] Working principle: When using this device, first install the alloy insert 2 on the milling cutter head 1 through the cooperation of the positioning bolt 15 and the threaded hole 13, then install the milling cutter head 1 on the milling cutter shank 3, and finally install the milling cutter shank 3 together with the milling cutter head 1 on the spindle of the machine tool. Then, the spindle drives this device to rotate and perform milling on the surface of the workpiece.

[0034] Meanwhile, after the milling cutter head 1 is installed in the milling cutter shank 3, its inlet hole 10 and outlet hole 11 are in a connected state. Coolant is injected into the inlet hole 10 through the cooling mechanism 9. The coolant can flow out through the threaded sleeve 12 in the outlet hole 11 and directly act on the surface of the alloy insert 2, reducing the temperature of the alloy insert 2, thereby extending the service life of the alloy insert 2 and improving the processing efficiency of the device.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A combined planar cutting high-hardness milling cutter, comprising a milling cutter head (1), an alloy insert (2), and a milling cutter shank (3), characterized in that: The outer wall of the milling cutter head (1) is provided with a chip removal groove (4), the inner wall of the chip removal groove (4) is provided with a tool groove (5), and the alloy insert (2) is installed in the tool groove (5); The lower wall of the milling cutter head (1) is provided with a connecting hole (6), and the upper wall of the milling cutter shank (3) is provided with a connecting rod (7). The connecting rod (7) is inserted into the connecting hole (6). The side wall of the milling cutter shank (3) is provided with an annular groove (8). The outer side wall of the annular groove (8) is rotatably provided with a cooling mechanism (9). The inner wall of the annular groove (8) is provided with a liquid inlet hole (10). The liquid inlet hole (10) penetrates the side wall of the connecting rod (7). The side wall of the milling cutter head (1) is provided with a liquid outlet hole (11). The liquid outlet hole (11) penetrates the inner wall of the milling cutter head (1) and is connected to the liquid inlet hole (10). The liquid outlet hole (11) is located in the chip removal groove (4).

2. The combined planar cutting high-hardness end mill according to claim 1, characterized in that: The cooling mechanism (9) includes a rotating ring (91), a connecting sleeve (92), and an inlet pipe (93). The rotating ring (91) is rotatably installed in an annular groove (8). The connecting sleeve (92) is inserted into the side wall of the rotating ring (91). One end of the inlet pipe (93) is inserted into the connecting sleeve (92). The other end of the inlet pipe (93) is connected to an external coolant pipe.

3. A combined planar cutting high-hardness end mill according to claim 1, characterized in that: The inner wall of the liquid outlet (11) is provided with an internal thread, and a threaded sleeve (12) is screwed into the liquid outlet (11) by the thread. The threaded sleeve (12) can be inserted into the liquid inlet (10).

4. A combined planar cutting high-hardness end mill according to claim 1, characterized in that: The inner wall of the blade groove (5) is provided with a threaded hole (13), and the middle part of the side wall of the alloy blade (2) is provided with a through hole (14). A positioning bolt (15) is inserted into the through hole (14) and can be screwed into the threaded hole (13).

5. A combined planar cutting high-hardness end mill according to claim 1, characterized in that: The lower wall of the milling cutter head (1) is provided with a positioning groove (16), and the upper wall of the milling cutter shank (3) is provided with a positioning block (17), which can be inserted into the positioning groove (16).

6. A combined planar cutting high-hardness end mill according to claim 3, characterized in that: The inner wall of the threaded sleeve (12) is fitted with a chip guard (18).

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