Face milling cutter of milling center

Abstract

The utility model discloses a face milling cutter of a milling center, the face milling cutter comprises a cutter handle shaft and a face milling cutter head, the face milling cutter head comprises a cutter head, the lower end face of the cutter head is provided with a plurality of blade mounting grooves along the circumferential direction, and milling blades are fixed in the blade mounting grooves in a one-to-one correspondence manner. Wherein a cooling liquid outlet hole is formed in the face, opposite to the milling blade, in each blade installation groove, a cooling liquid distribution groove communicated with the multiple cooling liquid outlet holes is formed in the cutter head, and a liquid inlet pipe opening communicated with the cooling liquid distribution groove is formed in the cutter handle shaft. Cooling liquid sprayed out of the cooling liquid outlet holes can directly act on the milling points of the corresponding milling blades, pertinence is better, cooling efficiency is higher, the using amount of the cooling liquid can be relatively saved, pollution to the working environment when the cooling liquid is directly sprayed to the working face through a spray head from one side is avoided, the cooling liquid outlet holes are evenly distributed, coverage of the milling points is guaranteed, and the service life of the milling blades is prolonged. The milling temperature is effectively reduced, the machining precision is improved, and the service life of a cutter is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of milling machining centers, in particular to a face milling cutter of a milling machining center. Background Art

[0002] The milling machining center can complete processes such as milling, boring, drilling, tapping and thread cutting. Face milling cutter is a common milling tool in the milling machining center and is widely used in the processing of various planes, curved surfaces and grooves.

[0003] During the high-speed milling process of the face milling cutter on the workpiece, due to the high temperature generated in the milling area, both the tool and the workpiece will be affected by thermal deformation, resulting in reduced machining accuracy and shortened tool life. In order to reduce the milling temperature, improve machining accuracy and tool life, coolant is generally used for cooling during the cutting process.

[0004] The traditional coolant cooling method is mainly achieved by spraying coolant outside the cutting area. Usually, a coolant spray head is installed on one side of the face milling cutter. When punching and milling, the spray head sprays coolant on the face milling cutter and the workpiece surface at a self-determined angle and at a fixed time. Although this method can effectively reduce the cutting temperature, the coolant utilization rate is low, the effective heat absorption efficiency is reduced, and the corresponding processing cost is increased. A large amount of coolant splashing on the workbench will also cause a lot of pollution to the working environment. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a face milling cutter for a milling machining center to solve the above problems.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a face milling cutter for a milling machining center, the face milling cutter comprising a tool shank shaft and a face milling cutter head, the face milling cutter head comprising a cutter disc, the upper end of the cutter disc is provided with a spindle connecting portion connected to the tool shank shaft, the lower end surface of the cutter disc is provided with a plurality of blade mounting grooves along its circumference, and a milling blade is fixed in each blade mounting groove in a one-to-one correspondence.

[0008] Among them, a coolant outlet hole is opened on the surface opposite to the milling blade in each of the blade mounting grooves, forming a plurality of coolant outlet holes arranged at intervals along the circumference of the cutter disc, a coolant distribution groove connected to the plurality of coolant outlet holes is provided in the cutter disc, and a liquid inlet pipe port connected to the coolant distribution groove is provided on the tool handle shaft.

[0009] Preferably, the coolant distribution groove is an annular groove structure arranged around the central axis of the cutter disc.

[0010] Preferably, the coolant outlet hole is connected to the side wall of the coolant distribution groove through a branch channel, and the branch channel extends obliquely upward from the lower end surface of the cutter disc toward the main shaft connecting part of the upper end of the cutter disc.

[0011] Preferably, a temporary storage chamber for accommodating coolant is provided at the bottom of the coolant distribution groove, and the temporary storage chamber is lower than the connection point between the branch channel and the coolant distribution groove, and is recessed inwardly toward the central axis of the cutter disc.

[0012] Preferably, the block structure formed between every two blade mounting grooves of the cutter disc is a blade mounting portion, and each of the milling blades is fastened to the corresponding blade mounting portion by screws.

[0013] Preferably, along the circumference of the cutter disc, the milling cutter blade is located on the front side of the cutter blade mounting portion, and the coolant outlet hole is located on the back side of the cutter blade mounting portion.

[0014] Preferably, the height of the coolant outlet hole on the blade mounting portion is greater than the bottom contact surface of the milling blade.

[0015] Preferably, the milling blade is an alloy blade and is octagonal.

[0016] The technical effects achieved by the technical solution of the utility model include:

[0017] In the above-mentioned milling machining center, a coolant outlet hole is opened on the surface opposite to the milling cutter in each blade installation groove, forming a plurality of coolant outlet holes arranged at intervals along the circumference of the cutter disc. Compared with the conventional solution of installing a coolant spray head on one side of the face milling cutter in the prior art, the coolant directly acts on the milling point of the corresponding milling cutter, the use of the coolant is more targeted, the cooling efficiency is higher, the use of the coolant can be relatively saved, and the pollution to the working environment is reduced;

[0018] The coolant sprayed from the coolant outlet hole will directly fall on the milling blade at the rear, effectively reducing the milling temperature, achieving better cooling effect, helping to improve machining accuracy and extend tool life. The coolant outlet holes are evenly distributed to ensure coverage of the milling point;

[0019] The face milling cutter has a simple structure and is easy to manufacture and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a face milling cutter for a milling machining center provided by an embodiment of the utility model;

[0021] Figure 2 A front view of a face milling cutter head in the face milling cutter;

[0022] Figure 3 For face milling cutter heads Figure 2A schematic cross-sectional view of the cross-sectional line A to A';

[0023] Figure 4 For face milling cutter heads Figure 3 Schematic cross-sectional view of section line BB' in FIG.

[0024] The reference numerals in the above drawings are:

[0025] The tool handle shaft 1, the liquid inlet pipe port 11, the face milling cutter head 2, the cutter disc 21, the blade mounting groove 210, the blade mounting part 211, the spindle connecting part 22, the milling cutter blade 23, the coolant outlet hole 240, the branch channel 241, the coolant distribution groove 250, and the temporary storage chamber 251. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the utility model shown in the accompanying drawings and described according to the accompanying drawings are merely exemplary, and the utility model is not limited to these embodiments.

[0027] Here, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the drawings, while other details that are not very relevant are omitted.

[0028] Reference Figure 1 As shown, an embodiment of the utility model provides a face milling cutter for a milling machining center, which includes a shank shaft 1 and a face milling cutter head 2. The face milling cutter head 2 includes a cutter disc 21. In this embodiment, the cutter disc 21 is a disc-shaped structure.

[0029] The upper end of the cutter disc 21 is provided with a spindle connecting part 22 connected to the shank shaft 1. The shank shaft 1, that is, the spindle of the milling machining center, can drive the cutter disc 21. The lower end surface of the cutter disc 21 is provided with a plurality of blade mounting grooves 210 along its circumference, and a milling blade 23 is fixed in each blade mounting groove 210 in a one-to-one correspondence.

[0030] Combination Figures 2 to 4 As shown, a coolant outlet hole 240 is provided on the surface opposite to the milling blade 23 in each of the blade mounting grooves 210, forming a plurality of coolant outlet holes 240 arranged at intervals along the circumference of the cutter disc 21 and arranged at equal angles around the shank shaft 1, so as to allow the coolant to be sprayed from the coolant outlet holes 240 to the milling blade 23, a coolant distribution groove 250 connected to the plurality of coolant outlet holes 240 is provided in the cutter disc 21, and a liquid inlet pipe port 11 connected to the coolant distribution groove 250 is provided on the shank shaft 1.

[0031] The coolant is introduced from the liquid inlet port 11 of the shank shaft 1 and enters the coolant distribution groove 250 inside the cutter head 21 . The coolant in the coolant distribution groove 250 is discharged from each coolant outlet hole 240 to the corresponding milling cutter blade 23 .

[0032] When the face milling cutter of the above-mentioned milling machining center is working, since the cutter disc 21 rotates under the drive of the spindle connection part 22, the coolant outlet hole 240 is opposite to the milling blade 23 in the blade mounting groove 210. Along the circumference of the cutter disc 21, the coolant sprayed from the coolant outlet hole 240 will directly spray to the milling blade 23 located at the rear. Under the action of rotation, the coolant can act more directly on the cutting area, which can effectively reduce the milling temperature and achieve better cooling effect, which is helpful to improve the processing accuracy and extend the tool life. In addition, compared with the conventional solution of installing a coolant spray head on one side of the face milling cutter in the prior art, since the coolant outlet holes 240 in the embodiment of the utility model correspond to the milling blade 23 one by one, and act on the milling points of the corresponding milling blade 23 respectively, the use of coolant is more targeted, the cooling efficiency is higher, the use of coolant can be relatively saved, and the pollution to the working environment is reduced.

[0033] A plurality of coolant outlet holes 240 are arranged at intervals along the circumference of the cutter disc 21, so the coolant is evenly distributed to ensure coverage of the milling point. Specifically, the coolant distribution groove 250 is an annular groove structure arranged around the central axis of the cutter disc 21, adapted to the structural arrangement of the shank shaft 1 and the spindle connection part 22, and convenient for making way for the structure.

[0034] Furthermore, the coolant outlet hole 240 is connected to the side wall of the coolant distribution groove 250 through the branch channel 241, and the branch channel 241 extends obliquely upward from the lower end surface of the cutter disc 21 toward the main shaft connection part 22 at the upper end of the cutter disc 21. The coolant in the coolant distribution groove 250 flows into each branch channel 241 respectively, and then naturally flows obliquely downward to the coolant outlet hole 240, and with the centrifugal force generated when the cutter disc 21 rotates, the coolant will easily flow smoothly from the coolant distribution groove 250 in the radial inner periphery to each coolant outlet hole 240 in the outer periphery. When the above-mentioned face milling cutter is specifically applied, the size, shape and position layout of the branch channel 241 can be adjusted as needed to meet different internal structure requirements.

[0035] Furthermore, a temporary storage chamber 251 for accommodating coolant is provided at the bottom of the coolant distribution groove 250. The temporary storage chamber 251 is lower than the connection between the branch channel 241 and the coolant distribution groove 250, and is recessed inwardly toward the central axis of the cutter disc 21. The coolant level in the temporary storage chamber 251 is lower than the branch channel 241 and will not flow out to the branch channel 241 without external force. When the face milling cutter is in a stopped state and not working, the provision of the temporary storage chamber 251 can increase the temporary storage of more coolant in the coolant distribution groove 250. When the face milling cutter starts to work and the cutter disc 21 rotates, part of the coolant in the temporary storage chamber 251 will be thrown out under the action of centrifugal force, thereby avoiding excessive coolant flowing directly from the coolant distribution groove 250 to each coolant outlet hole 240 when the face milling cutter stops working, causing waste. In addition, a circulating cooling system can be used to set a coolant recovery container under the workbench of the face milling cutter, and the coolant is recovered to the filtering and purification device through a water pump for purification, and then discharged to the liquid inlet port 11 of the connected shank shaft 1 for reuse, thereby improving the utilization rate of the coolant.

[0036] Since the cutter disc 21 rotates at high speed when milling the workpiece, it is necessary to ensure that the connection between the milling blade 23 and the cutter disc 21 is firm. At the same time, it should be easy to disassemble and replace. After the milling surface of the milling blade 23 is worn, it is convenient to change the surface or replace the milling blade 23. In this embodiment, the block structure formed between every two blade mounting grooves 210 of the cutter disc 21 is a blade mounting portion 211, and each of the milling blades 23 is screwed to the corresponding blade mounting portion 211 one by one.

[0037] Specifically, along the circumference of the cutter disc 21 , or in other words, along the rotation direction of the cutter disc 21 , the milling cutter blade 23 is located on the front side of the cutter blade mounting portion 211 , and the coolant outlet 240 is located on the back side of the cutter blade mounting portion 211 .

[0038] The position of the coolant outlet hole 240 on the blade mounting portion 211 should coincide with the position of the milling blade 23, so that the sprayed coolant can accurately act on the milling point of the milling blade 23. Exemplarily, the height of the coolant outlet hole 240 on the blade mounting portion 211 is greater than the bottom contact surface of the milling blade 23, so that there is a certain height difference between the coolant outlet and the milling point.

[0039] The milling blade 23 is an alloy blade suitable for milling various workpieces. The milling blade 23 is octagonal, which is convenient for changing the milling surface. When the above-mentioned face milling cutter is actually used, the material and structure of the milling blade 23 can be freely selected according to the needs of the operator.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0041] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A face milling cutter for a milling machining center, characterized in that: The invention comprises a tool handle shaft (1) and a face milling cutter head (2), wherein the face milling cutter head (2) comprises a cutter disc (21), wherein the upper end of the cutter disc (21) is provided with a spindle connecting portion (22) connected to the tool handle shaft (1), and the lower end surface of the cutter disc (21) is provided with a plurality of blade mounting grooves (210) along its circumference, wherein a milling blade (23) is fixed in each blade mounting groove (210) in a one-to-one correspondence. Wherein, a coolant outlet hole (240) is provided on the surface opposite to the milling blade (23) in each of the blade mounting grooves (210), so that a plurality of coolant outlet holes (240) are arranged at intervals along the circumference of the cutter disc (21); a coolant distribution groove (250) connected to the plurality of coolant outlet holes (240) is provided in the cutter disc (21); and a liquid inlet pipe opening (11) connected to the coolant distribution groove (250) is provided on the tool handle shaft (1).

2. The face milling cutter for a milling machining center according to claim 1, characterized in that: The coolant distribution groove (250) is an annular groove structure arranged around the central axis of the cutter disc (21).

3. The face milling cutter for a milling machining center according to claim 2, characterized in that: The coolant outlet hole (240) is connected to the side wall of the coolant distribution groove (250) through a branch channel (241), and the branch channel (241) extends obliquely upward from the lower end surface of the cutter disc (21) toward the main shaft connecting portion (22) at the upper end of the cutter disc (21).

4. The face milling cutter for a milling machining center according to claim 3, characterized in that: A temporary storage chamber (251) for accommodating coolant is provided at the bottom of the coolant distribution groove (250); the temporary storage chamber (251) is lower than the point where the branch channel (241) and the coolant distribution groove (250) are connected, and is recessed inwardly toward the central axis of the cutter disc (21).

5. The face milling cutter for a milling machining center according to claim 1, characterized in that: The block structure formed between every two blade mounting grooves (210) of the cutter disc (21) is a blade mounting portion (211), and each of the milling blades (23) is screwed onto the corresponding blade mounting portion (211).

6. The face milling cutter for a milling machining center according to claim 5, characterized in that: Along the circumference of the cutter disc (21), the milling blade (23) is located on the front side of the blade mounting portion (211), and the coolant outlet hole (240) is located on the back side of the blade mounting portion (211).

7. The face milling cutter for a milling machining center according to claim 5, characterized in that: The height of the coolant outlet hole (240) on the blade mounting portion (211) is greater than the bottom contact surface of the milling blade (23).

8. The face milling cutter for a milling machining center according to claim 1, characterized in that: The milling blade (23) is an alloy blade and is octagonal.

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