Milling cutter assembly with inner cooling function

Abstract

The utility model discloses a facing cutter assembly with internal cooling, which relates to the field of facing cutters, and comprises a facing cutter body, a plurality of blade grooves are formed in the bottom surface of the facing cutter body at equal angle intervals, and tool bits are fixed on the flat and straight surfaces of the inner walls of the blade grooves through bolts; according to the milling cutter assembly with the internal cooling function, the arc-shaped cooling cavity and the cooling liquid flow channel are arranged, effective air cooling heat dissipation can be conducted on the cutter body through air flow, meanwhile, the cooling liquid flow channel is used for continuously injecting cooling liquid into the arc-shaped cooling cavity, the cooling liquid is powerfully blown away due to high-speed flowing of the air flow, and the cooling effect is improved. The cooling liquid forms a high-speed and uniform spray shape in the arc-shaped cooling cavity, so that the high-speed flowing cooling liquid not only greatly enhances the heat exchange efficiency with the cutter head body and the cutter head, but also effectively takes away a large amount of heat through the high speed of the cooling liquid.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of milling cutter disc, especially to a milling cutter disc assembly with internal cooling. BACKGROUND

[0002] The milling cutter disc is provided with a plurality of cutter heads on one side of the cutter disc body, and the cutter disc body is driven by a machine tool to rotate at high speed, so that the cutter heads can cut workpieces;

[0003] A large amount of heat is generated during the cutting process, and if the heat cannot be dissipated in time, it will affect the performance of the cutter disc and the cutter heads. In order to solve the problem of heat generation, some milling cutter discs have a cooling cavity formed on the cutter disc body in the prior art, and cooling liquid is pumped into the cooling cavity to cool the cutter disc. However, the cooling cavity in the prior art only forms a channel for the flow of cooling liquid, and the shape of the channel is single, which makes the cooling channel only rely on the flow of cooling liquid to remove heat, and the heat dissipation effect is not ideal. SUMMARY

[0004] In order to make up for the shortcomings of the prior art, the purpose of the utility model is to provide a milling cutter disc assembly with internal cooling, which uses the airflow generated by the high-speed rotation of the cutter disc body to cool and dissipate heat, and combines with cooling liquid to dissipate heat, and uses the high-speed airflow to blow away the cooling liquid to improve the heat dissipation effect.

[0005] In order to solve the problems in the prior art, the technical scheme of the utility model is as follows:

[0006] A milling cutter disc assembly with internal cooling, comprising a cutter disc body, a plurality of blade grooves are formed on the bottom surface of the cutter disc body at equal angles, a cutter head is fixed to the inner wall of the blade groove by bolts, the flat surface of the blade groove is protruding outward on the outer periphery of the cutter disc body, an arc-shaped cooling cavity is formed on the cutter disc body at the groove interval between two adjacent blade grooves, the arc-shaped cooling cavity is inclined, the height of the inlet end of the arc-shaped cooling cavity is higher than the height of the outlet end of the arc-shaped cooling cavity, the inlet end of the arc-shaped cooling cavity is in communication with the flat surface of the blade groove on one side of the groove interval, and the outlet end of the arc-shaped cooling cavity is in communication with the arc-shaped surface of the blade groove on the other side of the groove interval.

[0007] A plurality of cooling liquid flow channels are formed on the cutter disc body at equal angles with the cutter disc body axis as the center, and each cooling liquid flow channel is opposite to one groove interval, the inlet end of the cooling liquid flow channel is in communication with the center hole of the cutter disc body, and the outlet end of the cooling liquid flow channel is in communication with one arc-shaped cooling cavity.

[0008] Preferably, the air inlet end of the arc-shaped cooling cavity is provided with a ring-shaped inclined surface, the liquid outlet end of the cooling liquid flow channel is located at one end of the arc-shaped cooling cavity close to the air inlet end, and a V-shaped part is formed at the end of the cooling liquid flow channel close to the arc-shaped cooling cavity.

[0009] Preferably, the liquid outlet end of the cooling liquid flow channel is inclined to one side away from the air inlet end of the arc-shaped cooling cavity.

[0010] Preferably, a guide sleeve is fixed at the air outlet end of the arc-shaped cooling cavity, and the end of the guide sleeve is opposite to the tool head.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The utility model discloses a cutting disc body and an arc-shaped cooling cavity structure closely connected with a cooling liquid flow channel are introduced, when the cutting disc body rotates at high speed, external airflow can smoothly flow into the air inlet end of the arc-shaped cooling cavity, and the airflow rapidly passes through the arc-shaped cooling cavity, and the kinetic energy of the airflow is used to effectively air cool and radiate heat for the cutting disc body, at the same time, the cooling liquid flow channel is used to continuously inject cooling liquid into the arc-shaped cooling cavity, due to the high-speed flow of the airflow, the cooling liquid is effectively blown away, so that the cooling liquid forms high-speed and uniform spray in the arc-shaped cooling cavity, the high-speed flowing cooling liquid not only greatly enhances the heat exchange efficiency with the cutting disc body and the tool head, but also effectively takes away a large amount of heat through the high speed.

[0013] 2. The utility model discloses a guide sleeve is arranged, and the high-speed flowing cooling liquid after air cooling and blowing is guided to the tool head, and the outer wall of the tool head is impacted, and the heat dissipation effect of the tool head part is further improved. ACCURATE DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model.

[0015] Figure 2 It is the cutting disc body structure schematic diagram of the utility model.

[0016] Figure 3 It is the cooling liquid flow channel structure schematic diagram of the utility model.

[0017] Figure 4 It is the arc-shaped cooling cavity structure schematic diagram of the utility model.

[0018] Figure 5 It is the overhead structure schematic diagram of the utility model.

[0019] Figure 6 It is the structure schematic diagram of the second embodiment of the utility model.

[0020] 1, cutter head body; 101, slot interval part; 102, center hole; 2, blade slot; 201, flat surface; 202, arc surface; 3, cutter head; 4, arc-shaped cooling cavity; 5, cooling liquid flow channel; 501, V-shaped part; 6, guide sleeve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] Embodiment one, please refer to Figures 1 to 5 The embodiment provides a milling cutter disc assembly with internal cooling, which comprises a cutter disc body 1, a center hole 102 is formed at the axis of the cutter disc body 1, the center hole 102 is used for connecting the cutter disc body 1 and a machine tool spindle, a plurality of blade slots 2 are arranged at equal angles on the bottom surface of the cutter disc body 1, the blade slot 2 has a flat surface 201 and an arc surface 202, the part between the adjacent two blade slots 2 on the cutter disc body 1 is a slot interval part 101, the flat surface 201 of the inner wall of the blade slot 2 is fixed with a cutter head 3 through bolts, which facilitates the replacement of the cutter head 3;

[0023] An arc-shaped cooling cavity 4 is arranged at the slot interval part 101 of the cutter disc body 1, the air inlet end of the arc-shaped cooling cavity 4 is in communication with the flat surface 201 of the blade slot 2 on one side of the slot interval part 101, and the air outlet end of the arc-shaped cooling cavity 4 is in communication with the arc surface 202 of the blade slot 2 on the other side of the slot interval part 101, in the state of looking down, the flat surface 201 of the blade slot 2 is arranged to protrude outward on the outer periphery of the cutter disc body 1, so that when the cutter disc body 1 rotates at high speed to perform cutting work, the airflow can enter from the air inlet end of the arc-shaped cooling cavity 4, the air inlet end of the arc-shaped cooling cavity 4 is arranged as an annular inclined surface, which can facilitate the introduction of the airflow, the airflow quickly passes through the arc-shaped cooling cavity 4, the air cooling work of the cutter disc body 1 is realized, and the heat dissipation of the cutter disc body 1 is accelerated;

[0024] A plurality of cooling liquid flow channels 5 are arranged at equal angles on the cutter disc body 1 with the axis of the cutter disc body 1 as the center, and each cooling liquid flow channel 5 is opposite to one slot interval part 101, the liquid inlet end of the cooling liquid flow channel 5 is in communication with the center hole 102, and the liquid outlet end of the cooling liquid flow channel 5 is in communication with one arc-shaped cooling cavity 4 opposite thereto; the liquid outlet end of the cooling liquid flow channel 5 is located at one end of the arc-shaped cooling cavity 4 close to the air inlet end, and a V-shaped part 501 is formed at the end of the cooling liquid flow channel 5 close to the arc-shaped cooling cavity 4;

[0025] When the cutter head body 1 rotates at high speed to perform cutting work, the cooling liquid is filled into the cooling liquid flow channel 5 through the cooling liquid filling structure, and the filling technology of the cooling liquid is disclosed in the existing patent with the publication number CN215392719U, which is a mature technology, so it is not repeated here, the cooling liquid takes away part of the heat on the cutter head body 1 through the cooling liquid flow channel 5, in particular, the V-shaped part 501 is located on the side close to the flat surface 201, which can be closer to the tool bit 3, and can take away the heat transferred from the tool bit 3 to the cutter head body 1 more quickly, and the cooling liquid flows in the cooling liquid flow channel 5 to perform primary heat dissipation, and then the cooling liquid enters the arc-shaped cooling cavity 4, and the outlet end of the cooling liquid flow channel 5 is inclined to the side away from the air inlet end of the arc-shaped cooling cavity 4, so that the flow direction of the cooling liquid is consistent with the flow direction of the airflow in the arc-shaped cooling cavity 4 after entering the arc-shaped cooling cavity 4, and the cooling liquid flows at high speed and is atomized in the arc-shaped cooling cavity 4 under the action of the airflow, thereby further efficiently taking away the heat of the cutter head body 1 in combination with the gas cooling heat dissipation, and the height of the air inlet end of the arc-shaped cooling cavity 4 is higher than the height of the air outlet end of the arc-shaped cooling cavity 4, which is beneficial to the flow of the cooling liquid.

[0026] In summary, the airflow is used to effectively cool and dissipate heat from the cutter head body 1, and at the same time, due to the high-speed flow of the airflow, it effectively blows away the cooling liquid, so that the cooling liquid forms a high-speed and uniform spray in the arc-shaped cooling cavity 4, and the high-speed flowing cooling liquid not only greatly enhances the heat exchange efficiency with the cutter head body 1 and the tool bit 3, but also effectively takes away a large amount of heat through its high speed, thereby greatly improving the heat dissipation effect of the cutter head body 1 and the tool bit 3.

[0027] Embodiment two, please refer to Figure 6 , the embodiment provides further technical solutions based on embodiment one, the air outlet end of the arc-shaped cooling cavity 4 is fixed with a guide sleeve 6, and the end of the guide sleeve 6 directly faces the tool bit 3, and the cooling liquid atomized by the airflow can directly impact on the tool bit 3, so as to further dissipate heat from the tool bit 3 on the outside, thereby further improving the heat dissipation effect.

[0028] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An in-band cooling milling cutter disc assembly, comprising a cutter disc body (1), the bottom surface of the cutter disc body (1) is provided with a plurality of blade grooves (2) at an equal angle interval, and the flat surface (201) of the inner wall of the blade groove (2) is fixed with a cutter head (3) through a bolt, characterized in that, The flat surface (201) of the blade slot (2) is arranged outwardly protruding on the outer periphery of the cutter body (1), an arc-shaped cooling cavity (4) is arranged at the inter-slot part (101) between two adjacent blade slots (2) on the cutter body (1), the air inlet end of the arc-shaped cooling cavity (4) is communicated with the flat surface (201) of the blade slot (2) on one side of the inter-slot part (101), and the air outlet end of the arc-shaped cooling cavity (4) is communicated with the arc surface (202) of the blade slot (2) on the other side of the inter-slot part (101); A plurality of cooling liquid flow channels (5) are arranged on the cutter body (1) at equal angular intervals with the axis of the cutter body (1) as the center, each cooling liquid flow channel (5) is opposite to one inter-slot part (101), the liquid inlet end of the cooling liquid flow channel (5) is communicated with the central hole (102) of the cutter body (1), and the liquid outlet end of the cooling liquid flow channel (5) is communicated with one arc-shaped cooling cavity (4).

2. The in-cooled milling cutterhead assembly of claim 1, wherein, The arc-shaped cooling cavity (4) is arranged in an inclined manner, the height of the air inlet end of the arc-shaped cooling cavity (4) is higher than the height of the air outlet end of the arc-shaped cooling cavity (4).

3. The in-cooled milling cutterhead assembly of claim 1, wherein, The air inlet end of the arc-shaped cooling cavity (4) is arranged in the form of an annular inclined surface.

4. The in-cooled milling cutterhead assembly of claim 1, wherein, The liquid outlet end of the cooling liquid flow channel (5) is located at one end of the arc-shaped cooling cavity (4) close to the air inlet end, and a V-shaped part (501) is formed at the end of the cooling liquid flow channel (5) close to the arc-shaped cooling cavity (4).

5. The in-line cooled milling cutterhead assembly of claim 4, wherein, The liquid outlet end of the cooling liquid flow channel (5) is arranged in an inclined manner to one side away from the air inlet end of the arc-shaped cooling cavity (4).

6. The in-cooled milling cutterhead assembly of claim 5, wherein, The air outlet end of the arc-shaped cooling cavity (4) is fixed with a guide sleeve (6), and the end of the guide sleeve (6) is opposite to the tool bit (3).

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