Milling cutter with changeable cooling structure

Abstract

The utility model discloses a milling cutter with a changeable cooling structure, which comprises a cutter handle and a cutter head, the cutter head is arranged at the bottom of the cutter handle, a water cover is sleeved at the bottom of an outer ring of the cutter handle, sealing bearings are mounted at the top and the bottom of an inner cavity of the water cover, and water holes are vertically formed in the middles of the cutter head and the cutter handle. A water hole is horizontally formed in the side face of the cutter handle, and a pipeline connector is installed at the top of the side face of the water cover in a penetrating mode. According to the milling cutter capable of changing the cooling structure, cooling water is jetted out from the interior of the milling cutter, and continuously acts on a workpiece and the outer wall of a cutter head of the milling cutter in a throwing action at the jetting position, so that the interior of the milling cutter can be subjected to heat exchange while debris and the exterior of the milling cutter are subjected to impurity removal and cooling in the prior art, and the cooling effect is improved. Therefore, the problem that the residual temperature in an existing milling cutter structure is too high is effectively solved.

Description

Technical Field

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

[0002] A milling cutter is a rotary tool with one or more teeth used for milling. Each tooth cuts off the excess of the workpiece intermittently in sequence during operation. Milling cutters are mainly used to process planes, steps, grooves, forming surfaces and cut off workpieces on milling machines.

[0003] As an important equipment structure in current mechanical processing, when the milling cutter is in use, a spraying structure for spraying coolant is configured on the tool holder of the processing machine tool. During the operation of the milling cutter, coolant is continuously sprayed to the milling cutter position, which can not only cool the milling cutter but also flush away the chips cut by the milling cutter.

[0004] The above-mentioned existing technical solution for flushing and cooling the milling cutter naturally has its own advantages, but its defects are also very obvious. When the milling cutter is working, the coolant is in a flushing state and only acts on the outer surface of the milling cutter, and the time it acts on the milling cutter is very short. It is impossible to exchange heat well with the residual heat inside the milling cutter.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, provide a milling cutter with a changeable cooling structure, and solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0008] A milling cutter with a changeable cooling structure comprises: a tool handle and a tool head, wherein the tool head is arranged at the bottom of the tool handle, a water cover is sleeved at the bottom of the outer ring of the tool handle, sealed bearings are installed at the top and bottom of the inner cavity of the water cover, water holes are vertically opened in the tool head and the middle of the tool handle, water holes are horizontally opened on the side of the tool handle, and a pipe joint is installed at the top of the side of the water cover in a through-type manner.

[0009] Preferably, the top of the water cover is butt-jointed and mounted to the tool holder structure of the machine tool via fasteners.

[0010] Preferably, the pipe joint is butt-jointed with the cooling water nozzle on the machine tool.

[0011] Preferably, the sealed bearing is sleeved on the outer ring of the tool handle and is located at the top and bottom of the inner cavity of the water cover.

[0012] Preferably, the vertical water hole on the knife handle is connected to the horizontal water hole, and the vertical water hole on the knife handle is connected to the water hole on the knife head.

[0013] Preferably, a small fan blade is fixedly mounted on the outer wall of the knife handle located on the inner wall portion of the water cover, and the small fan blade is located above the water hole in the horizontal state of the knife handle.

[0014] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0015] 1. The milling cutter with a changeable cooling structure uses cooling water to spray out from the inside of the milling cutter, and continuously acts on the workpiece and the outer wall of the cutter head of the milling cutter in a "swinging" motion at the spraying position. While removing debris and cooling the outside of the milling cutter in the prior art, heat exchange can also be performed on the inside of the milling cutter, thereby effectively solving the problem of excessively high residual temperature inside the existing milling cutter structure.

[0016] 2. The milling cutter with a changeable cooling structure can achieve internal and external heat exchange of the milling cutter by blowing cold air flow in the absence of cooling water through the use of a water cover and small fan blades, and this heat exchange action can achieve dry removal of debris.

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described below are merely some embodiments. A person skilled in the art can derive other drawings based on these drawings without any creative effort.

[0019] In the attached picture:

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is an exploded view of the structure of the utility model;

[0022] Figure 3 This is a bottom view of the cutter head structure of the utility model.

[0023] In the figure: 1. knife handle; 2. knife head; 3. water cover; 4. sealed bearing; 5. water hole; 6. pipe joint; 7. small fan blade.

[0024] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] The utility model will now be further described in detail with reference to the accompanying drawings.

[0026] See also Figure 1-3 As shown, in this embodiment, a milling cutter with a changeable cooling structure is provided, including a shank 1 and a cutter head 2, a water channel is arranged between the teeth on the outer surface of the cutter head 2, and water holes 5 are opened in the middle of the cutter head 2 and the lower half of the middle of the shank 1 and the side wall, a water cover 3 is mounted on the outer ring of the shank 1, sealing bearings 4 are installed on the top and bottom of the inner cavity of the water cover 3, and a pipe joint 6 is installed through the outer wall of the water cover 3, the main structure of the sealing bearing 4 includes a mechanical sealing structure, and a bearing is installed in the middle of the mechanical seal, so that in actual use, the bearing can ensure the normal rotation of the entire milling cutter, and at the same time, when cooling water is poured into the inner cavity of the water cover 3, it can also play a sealing role to prevent the cooling water from flowing out from the side of the water cover 3.

[0027] Among them, the top of the water cover 3 is docked and installed with the machine tool turret structure through a fastener structure. When actually used, the milling cutter rotates at high speed, and the water cover 3 is docked and installed with the machine tool turret structure, so the water cover 3 is motionless during operation.

[0028] Among them, the pipe joint 6 is installed by docking with the coolant spraying pipe on the machine tool. The pipe joint 6 adopts a model compatible with the coolant spraying pipe of the machine tool in the prior art, that is, on the coolant spraying pipe of the machine tool in the prior art, after the nozzle is removed, it can be docked with the pipe joint 6 and installed. The cooling structure of the prior art can be used directly without the need for additional improvement and design of the machine tool, which is quick and convenient.

[0029] In this embodiment, as shown in Figure -, when using the milling cutter of the present technical solution, the tool handle 1 is directly docked and installed with the tool holder structure of the machine tool and locked, and finally the water cover 3 is connected and fixed with the tool holder structure through the fastener structure, and finally the coolant water pipe on the machine tool is docked and installed with the pipe joint 6. At this time, the initial installation work is completed and it can be used directly afterwards.

[0030] When using the milling cutter to process a workpiece, the coolant pipe transports the coolant from the pipe joint 6 into the inner cavity of the water cover 3. The cooling water enters from the water hole 5 on the tool handle 1, and continuously flows along the water holes 5 on the tool handle 1 and the cutter head 2 until it flows out from the end position of the cutter head 2. The outflowing cooling water is continuously "thrown out" along with the high-speed rotating milling cutter. Combined with the limitation of the workpiece being processed, the "thrown" cooling water continuously splashes onto the outer wall of the cutter head 2.

[0031] In the present technical solution, cooling water is sprayed out from the inside of the milling cutter, and continuously acts on the workpiece and the outer wall of the cutter head 2 of the milling cutter in a "swinging" motion at the spraying position. While removing debris and cooling the outside of the milling cutter in the prior art, heat exchange can also be performed on the inside of the milling cutter, thereby effectively solving the problem of excessive residual temperature inside the existing milling cutter structure.

[0032] Example:

[0033] The handle 1 is located on the outer wall of the inner cavity of the water cover 3, and a small fan blade 7 is fixedly installed thereon, and the small fan blade 7 is located above the water hole 5. The power required for the rotation of the small fan blade 7 comes entirely from the handle 1 of the milling cutter, that is, when the milling cutter rotates during operation, the small fan blade 7 will be driven to rotate through the handle 1. The main function of the small fan blade 7 is to generate airflow through rotation, squeezing the cooling water injected into the water cover 3 into the water hole 5, thereby accelerating the cooling water and increasing the initial kinetic energy. Secondly, when cooling water is not used, the rotation of the small fan blade 7 can also be used to drive air flow, thereby generating wind, allowing the wind to flow along the path of the water hole 5, and realizing heat exchange of the milling cutter through cold air.

[0034] In this embodiment, based on the embodiment, when the milling cutter rotates during operation, the shank 1 drives the small fan blades 7 thereon to rotate at high speed. When the small fan blades 7 rotate, not only can the cooling water be encouraged to enter from the water hole 5, but also the humid cold air can be blown into the inner cavity of the milling cutter synchronously. When cooling water is not used, the internal and external heat exchange of the milling cutter can be realized through the flow of cold air.

[0035] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. A milling cutter with a changeable cooling structure, characterized in that: include: A knife handle (1) and a knife head (2), wherein the knife head (2) is arranged at the bottom of the knife handle (1), a water cover (3) is mounted at the bottom of the outer ring of the knife handle (1), a sealing bearing (4) is installed at the top and bottom of the inner cavity of the water cover (3), a water hole (5) is vertically opened in the middle of the knife head (2) and the knife handle (1), a water hole (5) is horizontally opened on the side of the knife handle (1), and a pipe joint (6) is installed at the top of the side of the water cover (3) in a through-type manner.

2. A milling cutter with a changeable cooling structure according to claim 1, characterized in that: The top of the water cover (3) is butt-jointed and mounted with the tool rest structure of the machine tool via fasteners.

3. A milling cutter with a changeable cooling structure according to claim 1, characterized in that: The pipe joint (6) is butt-jointed with the cooling water spray pipe on the machine tool.

4. A milling cutter with a changeable cooling structure according to claim 1, characterized in that: The sealing bearing (4) is sleeved on the outer ring of the knife handle (1) and is located at the top and bottom of the inner cavity of the water cover (3).

5. The milling cutter with a changeable cooling structure according to claim 1, characterized in that: The vertical water hole (5) on the knife handle (1) is connected to the horizontal water hole (5), and the vertical water hole (5) on the knife handle (1) is connected to the water hole (5) on the knife head (2).

6. The milling cutter with a changeable cooling structure according to claim 1, characterized in that: A small fan blade (7) is fixedly mounted on the outer wall of the knife handle (1) located on the inner wall of the water cover (3), and the small fan blade (7) is located above the water hole (5) in the horizontal state of the knife handle (1).

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