Milling tool

Abstract

The utility model provides a milling tool, which relates to the technical field of milling tools, including: a main tool shaft, a milling blade and an external drainage plate, wherein the lower part of the main tool shaft is provided with a milling blade, an outer drainage plate is fixed in an annular array on the upper part of the main tool shaft, a central axis tube is axially arranged inside the main tool shaft, an upper drainage channel is provided in the annular array on the upper part of the main tool shaft, a lower blade fixing block is provided in an annular array on the lower end of the main tool shaft, a lower connecting hole is provided in the annular array on the lower part of the main tool shaft, the head end of the upper drainage channel is connected to the central axis tube, and the tail end of the upper drainage channel is connected to the outer side of the main tool shaft. The air finally flows out from the lower connecting hole to cool the milling blade, so as to avoid the accumulation of metal scraps to block the lower connecting hole, thereby achieving compatibility with milling machines without built-in cooling channels, and solving the problem of poor versatility between milling tools with built-in channels and milling machines without built-in cooling channels.

Description

Technical Field

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

[0002] The milling machine tool performs milling processing on parts. The milling machine drives the milling tool to rotate to realize the milling process. In order to reduce the milling processing temperature, the milling machine tool is divided into two types of cooling channels: built-in cooling channels and external cooling for spraying coolant. The built-in cooling channel of the milling machine tool is connected to the internal channel of the milling tool, and the coolant is sprayed from the lower end of the milling tool.

[0003] The existing built-in cooling channels are used in combination with milling cutters with built-in channels. When the milling cutters with built-in channels are used on milling machines without built-in cooling channels, the built-in channels of the milling cutters cannot function, and the lower outlet of the built-in channels is easily clogged by metal residues, resulting in poor compatibility between the milling cutters with built-in channels and milling machines without built-in cooling channels. Summary of the invention

[0004] The disclosed embodiment relates to a milling tool, wherein a central axis tube can be connected to a built-in coolant nozzle, and liquid flows out of a lower connecting hole to cool the milling blade. When a device without a built-in coolant nozzle is used, external air enters the central axis tube, and the air finally flows out from the lower connecting hole to cool the milling blade. At the same time, the air outflow from the lower connecting hole can also drive metal waste chips to flow outward, thereby preventing metal waste chips from gathering and clogging the lower connecting hole, thereby improving the versatility of the device with a milling machine tool without a built-in cooling channel.

[0005] In a first aspect of the present disclosure, a milling tool is provided, specifically comprising: a main tool shaft, a milling blade and an outer guide plate, wherein a milling blade is arranged at the lower portion of the main tool shaft, an outer guide plate is fixed in an annular array at the upper portion of the main tool shaft, a central axis tube is axially arranged inside the main tool shaft, an upper guide channel is provided in the annular array at the upper portion of the main tool shaft, a lower blade fixing block is provided in the annular array at the lower end of the main tool shaft, and a lower connecting hole is provided in the annular array at the lower end of the main tool shaft.

[0006] In at least some embodiments, the head end of the upper drainage channel is connected to the central axis tube, and the tail end of the upper drainage channel is connected to the outside of the main tool axis, and the external air enters the upper drainage channel, and then the air enters the central axis tube.

[0007] In at least some embodiments, the head end of the lower connecting hole is connected to the middle axis tube, and the tail end of the lower connecting hole is connected to the outside of the main tool axis, and air flows out from the lower connecting hole to cool the milling blade.

[0008] In at least some embodiments, a fixing screw passes through the middle of the milling blade, and the milling blade is also arranged on the opposite side of the rotation direction of the main tool shaft. When the main tool shaft rotates, the side of the lower blade fixing block where the milling blade is located first contacts the component, and the tail end of the fixing screw is threadedly connected to the lower blade fixing block.

[0009] In at least some embodiments, the milling blade is attached to the lower side of the lower blade fixing block, the tail end of the lower connecting hole is on the upper side of the lower blade fixing block, and the tail end of the lower connecting hole is on the upper side of the milling blade. The air finally flows out from the lower connecting hole to cool the milling blade. At the same time, the air outflow from the lower connecting hole can also drive metal waste to flow outward.

[0010] In at least some embodiments, the outer guide plate is fixed on the outer side of the tail end of the upper guide channel, and the outer guide plate is fixed on the opposite side of the rotation direction of the main tool axis. If the main tool axis rotates from right to left, the outer guide plate is on the right side of the tail end of the upper guide channel. The outer guide plate guides more air into the upper guide channel, increases the amount of air introduced into the upper guide channel, and speeds up the air flow rate.

[0011] In at least some embodiments, the upper drainage channel is set to gradually expand outward from the central axis tube, the upper drainage channel is set at an angle, and the array inclination direction of the upper drainage channel is set in the same direction as the rotation direction of the main tool axis. If the main tool axis rotates from right to left, the upper drainage channel is also set to be inclined from right to left.

[0012] The utility model provides a milling cutter, which has the following beneficial effects:

[0013] The center axis tube can be connected to the built-in coolant nozzle, and the liquid flows out of the lower connecting hole to cool the milling blade. When the equipment without the built-in coolant nozzle is used, the outside air enters the center axis tube, and the air finally flows out from the lower connecting hole to cool the milling blade. At the same time, the air outflow from the lower connecting hole can also drive the metal waste to flow outward, avoiding the metal waste to gather around the milling blade, thereby improving the versatility with the milling machine tools without built-in cooling channels.

[0014] The outer guide plate guides more air into the upper guide channel, increases the amount of air flowing out of the lower connecting hole, improves the air outlet speed of the lower connecting hole, and improves the air cooling effect on the milling blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0016] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached picture:

[0018] Figure 1 A schematic diagram showing the overall structure of the present application;

[0019] Figure 2 A schematic structural diagram of a main tool axis section of the present application is shown;

[0020] Figure 3 A schematic diagram showing the upper drainage channel structure of the present application is shown;

[0021] Figure 4 A schematic diagram showing the lower connecting hole structure of the present application is shown;

[0022] Figure 5 A schematic structural diagram showing a milling blade and a lower blade fixing block of the present application in a separated state;

[0023] Figure 6 A structural schematic diagram showing the split state of the present application.

[0024] Reference numerals list

[0025] 1. Main tool axis; 101. Middle axis tube; 102. Upper drainage channel; 103. Lower connecting hole; 104. Lower blade fixing block;

[0026] 2. Milling blade; 201. Fixing screw;

[0027] 3. External drainage plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1: Please refer to Figures 1 to 6 :

[0030] The utility model proposes a milling tool, comprising: a main tool axis 1, a milling blade 2 and an outer drainage plate 3, a central axis tube 101 is axially arranged inside the main tool axis 1, an upper drainage channel 102 is arranged in an annular array on the upper part of the main tool axis 1, the upper drainage channel 102 is gradually expanded from the central axis tube 101 to the outside, the upper drainage channel 102 is inclined, the array inclination direction of the upper drainage channel 102 is set in the same direction as the rotation direction of the main tool axis 1, if the main tool axis 1 rotates from right to left, the upper drainage channel 102 is also inclined from right to left, a lower blade fixing block 104 is arranged in an annular array at the lower end of the main tool axis 1, a lower communicating hole 103 is arranged in the lower annular array of the main tool axis 1, a head end of the upper drainage channel 102 is connected to the central axis tube 101, and the upper drainage channel 102 is arranged in an inclined direction. The tail end is connected with the outside of the main tool shaft 1, and the external air enters the upper drainage channel 102, and then the air enters the middle axis tube 101. The head end of the lower connecting hole 103 is connected with the middle axis tube 101, and the tail end of the lower connecting hole 103 is connected with the outside of the main tool shaft 1. The air flows out from the lower connecting hole 103 to cool the milling blade 2. The lower part of the main tool shaft 1 is provided with a milling blade 2, and a fixing screw 201 passes through the middle of the milling blade 2. The milling blade 2 is also arranged on the opposite side of the rotation direction of the main tool shaft 1. When the main tool shaft 1 rotates, the side of the lower blade fixing block 104 where the milling blade 2 is located first contacts with the parts, and the tail end of the fixing screw 201 is screwed to the lower blade fixing block 104, and the outer drainage plate 3 is fixed to the annular array on the upper part of the main tool shaft 1.

[0031] In the disclosed embodiment, the milling blade 2 is attached to the lower side of the lower blade fixing block 104, and the tail end of the lower communicating hole 103 is on the upper side of the lower blade fixing block 104, and the tail end of the lower communicating hole 103 is on the upper side of the milling blade 2. The air finally flows out from the lower communicating hole 103 to cool the milling blade 2. At the same time, the air outflow from the lower communicating hole 103 can also drive metal waste chips to flow outward, thereby preventing metal waste chips from gathering around the milling blade 2, causing the milling blade 2 to be blocked by waste chips and accelerated wear, thereby improving the compatibility with milling machine tools without built-in cooling channels.

[0032] In the disclosed embodiment, the outer guide plate 3 is fixed on the outer side of the tail end of the upper guide channel 102, and the outer guide plate 3 is fixed on the opposite side of the rotation direction of the main tool axis 1. If the main tool axis 1 rotates from right to left, the outer guide plate 3 is on the right side of the tail end of the upper guide channel 102. The outer guide plate 3 guides more air into the upper guide channel 102, increasing the amount of air introduced into the upper guide channel 102. The upper guide channel 102 is wide outside and narrow inside, which can speed up the flow rate of air.

[0033] Embodiment 2, on the basis of embodiment 1, a circular tubular cover is slidably provided on the outside of the main tool shaft 1, and the upper drainage channel 102 is covered and closed by sliding the tubular cover downward to prevent the coolant from spraying outward from the upper drainage channel 102 when the middle axis tube 101 is connected to the built-in coolant pipe mouth, and ensure that the coolant is sprayed out from the lower connecting hole 103. The circular tubular cover is moved up and down to switch the upper drainage channel 102 between the open and sealed states, and the circular tubular cover is moved up and fixed by screws to open the upper drainage channel 102.

[0034] The working principle of this embodiment is as follows: the upper end of the main tool shaft 1 is fixedly connected to the milling machine, the main tool shaft 1 and the milling blade 2 rotate synchronously, the milling blade 2 realizes the milling operation on the parts, the milling blade 2 is fixed by the fixing screw 201 and the lower blade fixing block 104, and the replacement operation of the milling blade 2 is completed. The milling blade 2 can be replaced with different shapes and models according to processing requirements. When the milling machine is provided with a built-in coolant circulation pipeline, the central axis tube 101 is connected to the built-in coolant pipe port of the milling machine, and the coolant enters the interior of the central axis tube 101, and the coolant flows outward from the lower connecting hole 103. The liquid discharged from the lower connecting hole 103 cools the milling blade 2 and washes away the milling waste chips at the same time. When the milling machine equipment without a built-in coolant pipe port is used, the main tool shaft 1 rotates in a circular direction, and air enters the upper drainage channel 102. The structure of the upper drainage channel 102 being wide outside and narrow inside is conducive to the introduction of air. The direction of the annular array of the upper drainage channel 102 is opposite to that of the main tool axis 1, which is conducive to the introduction of air. External air enters the middle axis tube 101. The middle axis tube 101 is blocked because there is no coolant channel above it. The air inside the middle axis tube 101 flows downward, and the air finally flows out from the lower connecting hole 103 to cool the milling blade 2. At the same time, the air outflow from the lower connecting hole 103 can also drive the metal waste to flow outward, so as to avoid the metal waste gathering around the milling blade 2, causing the milling blade 2 to be blocked by the waste and accelerate the wear, and to avoid the accumulation of metal waste to block the lower connecting hole 103, thereby improving the versatility of the milling machine tool with no built-in cooling channel;

[0035] The outer guide plate 3 is fixed to the side opposite to the rotation direction of the main tool axis 1 at the tail end of the upper guide channel 102. If the main tool axis 1 rotates from right to left, the outer guide plate 3 is on the right side of the tail end of the upper guide channel 102. The outer guide plate 3 guides more air into the upper guide channel 102, increasing the amount of air introduced into the upper guide channel 102. The upper guide channel 102 is wide on the outside and narrow on the inside, which can speed up the air flow rate, increase the amount of air outflowing from the lower connecting hole 103, and improve the air outlet speed of the lower connecting hole 103, thereby improving the air cooling effect on the milling blade 2 and improving the flow speed of the blown metal waste.

[0036] In this article, there are a few points to note:

[0037] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0038] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0039] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A milling tool, comprising: A main tool shaft (1), a milling blade (2) and an outer guide plate (3); characterized in that a milling blade (2) is arranged at the lower part of the main tool shaft (1), an outer guide plate (3) is fixed in an annular array on the upper part of the main tool shaft (1), a central axis tube (101) is axially arranged inside the main tool shaft (1), an upper guide channel (102) is arranged in the annular array on the upper part of the main tool shaft (1), a lower blade fixing block (104) is arranged in the annular array at the lower end of the main tool shaft (1), and a lower connecting hole (103) is arranged in the annular array on the lower part of the main tool shaft (1).

2. A milling tool according to claim 1, characterized in that: The head end of the upper drainage channel (102) is in communication with the central axis tube (101), and the tail end of the upper drainage channel (102) is in communication with the outer side of the main tool axis (1).

3. A milling tool according to claim 1, characterized in that: The head end of the lower communicating hole (103) is connected to the middle axis tube (101), and the tail end of the lower communicating hole (103) is connected to the outer side of the main tool shaft (1).

4. A milling tool according to claim 1, characterized in that: A fixing screw (201) passes through the middle of the milling blade (2), and the tail end of the fixing screw (201) is screwed to the lower blade fixing block (104).

5. A milling tool according to claim 4, characterized in that: The milling blade (2) is attached to the lower side of the lower blade fixing block (104), the tail end of the lower connecting hole (103) is located on the upper side of the lower blade fixing block (104), and the tail end of the lower connecting hole (103) is located on the upper side of the milling blade (2).

6. A milling tool according to claim 1, characterized in that: The outer guide plate (3) is fixed to the outer side of the tail end of the upper guide channel (102), and the outer guide plate (3) is fixed to the side opposite to the rotation direction of the main tool shaft (1).

7. A milling tool according to claim 1, characterized in that: The upper drainage channel (102) is arranged to gradually expand outward from the central axis tube (101), the upper drainage channel (102) is arranged to be inclined, and the inclination direction of the upper drainage channel (102) is arranged to be the same as the rotation direction of the main tool axis (1).

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