KR20230028892A - Tooling kit assembly and including processing device thereof - Google Patents

Abstract

A tooling kit assembly and a processing device including the same are disclosed. The tooling kit assembly according to the present invention is the tooling kit assembly in which a cutting tool is mounted and for rotating the cutting tool, comprising: a main body on which a cutting tool is mounted and having a rotatable mounting part; an injection part provided on the main body and provided to inject lubricant toward the cutting tool; a refrigerant supply channel provided inside the main body to deliver a refrigerant to the inside of the cutting tool mounted on the mounting part of the main body; and a lubricant supply channel provided inside the main body for supplying the lubricant to the injection part, wherein the injection part is provided to inject the lubricant toward an inclined surface of a cutting edge of the cutting tool, thereby capable of preventing phase change in a course of fluid flow through the inside of the tooling kit.

Description

Tooling kit assembly and processing device including the same {TOOLING KIT ASSEMBLY AND INCLUDING PROCESSING DEVICE THEREOF}

The present invention relates to a tooling kit assembly, and more particularly, to a tooling kit assembly capable of cooling a tooling kit assembly equipped with a cutting tool using a cryogenic fluid, and a processing device including the same.

Cutting using a machine tool uses a variety of cutting tools.

During cutting using various cutting tools, a high temperature of 1000 to 1500 ° C occurs.

In addition, high-hardness lightweight materials such as titanium and CGI are classified as difficult-to-cut materials that are very difficult to cut.

Since difficult-to-cut materials have high stiffness and hardness, low thermal conductivity, and high affinity with tool materials, high processing load and temperature are generated, which causes wear and tear of cutting tools. Due to these problems, processability as well as productivity are lowered.

In order to solve the above problems, recently, a lot of processing techniques using cryogenic refrigerants have been developed.

On the other hand, the cryogenic refrigerant cools the tool by various cooling methods such as direct injection (external injection) and indirect injection (or internal injection).

The direct injection method refers to a method of directly cooling a tool by spraying a refrigerant from the outside of a tool using a separately provided refrigerant spray nozzle. In the case of the direct injection method, since the hardness of the base material increases as the refrigerant contacts the base material in the process of spraying the refrigerant, it becomes more difficult to process using a tool.

The indirect injection method refers to a method of indirectly cooling a tool by forming a flow path through which a cryogenic refrigerant can flow inside the tool. In other words, the indirect injection method cools the tool by allowing the refrigerant to flow inside the tool. At this time, since the refrigerant does not come into contact with the base material, the strength of the base material is increased so that processing using tools is difficult to avoid.

However, in the case of the indirect injection method, in the process of the refrigerant flowing inside the tool, the refrigerant is vaporized due to a phase change due to the change in the cross-sectional area of the refrigerant flow, blocking the refrigerant flow path, and eventually reducing the cooling efficiency of the tool using the refrigerant. There is a problem being

Further, in milling or drilling processing, it means that a cutting tool is rotated along with rotation of the tooling kit while being fixed to the two-ring kit to perform processing of a workpiece.

At this time, in the case of a conventional tooling kit, there is almost no tooling kit that indirectly or directly cools a cutting tool by flowing a cryogenic fluid and MQL therein.

Accordingly, there is a need to develop a cutting tool holder assembly capable of improving the cooling efficiency of a tooling kit as well as a cutting tool by using an indirect or direct fluid injection method, and a processing device including the same.

(Patent Document 1) Korean Patent Publication No. 10-2014-0033338 (published on March 18, 2014)

An object of the present invention is to provide a tooling kit assembly capable of preventing a phase change in the process of fluid flow inside the tooling kit and a processing apparatus including the same.

In addition, an object of the present invention is to supply the MQL directly to the cutting tool along the inner flow path of the tooling kit assembly or indirectly supply the refrigerant to the cutting tool along the inner flow path of the tooling kit assembly, so that the cutting tool and the cutting tool are mounted. It is to provide a tooling kit assembly capable of cooling the tooling kit assembly and a processing device including the same.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

The above object is, according to the present invention, the cutting tool is mounted, a tooling kit assembly for rotating the cutting tool, the cutting tool is mounted, a main body having a rotatable mounting portion, provided on the main body, a lubricant toward the cutting tool In order to deliver the refrigerant to the inside of the injection unit provided to spray the cutting tool mounted on the mounting portion of the body, the refrigerant supply channel provided inside the body and the lubricant supply channel provided inside the body to supply lubricant to the injection unit, Spraying may be accomplished by a tooling kit assembly arranged to spray lubricant toward the rake face of the cutting edge of the cutting tool.

Here, it may include a temperature controller provided to surround at least a portion of the main body.

On the other hand, the cutting tool has a first end and a second end in the opposite direction of the first end, and a tool body provided with a refrigerant discharge hole at the first end and a cutting edge at the second end, from the first end to the tool body. A refrigerant inlet channel extending along the central axis of the tool body toward the second end, into which refrigerant flows from the refrigerant supply channel, a refrigerant distribution channel connected to the refrigerant inlet channel, and extending from the second end toward the cutting edge, and refrigerant A refrigerant discharge channel connecting the distribution channel and the refrigerant discharge hole may be included, and the refrigerant inlet channel may have a first convergence area at a boundary between the refrigerant inlet channel and the refrigerant distribution channel, the diameter of which decreases along the flow direction of the refrigerant. .

Here, the first convergence area may have a diameter linearly reduced along the flow direction of the refrigerant.

In particular, the first convergence area may be provided such that the diameter of the channel continuously decreases to a boundary area between the refrigerant inlet channel and the refrigerant distribution channel along the flow direction of the refrigerant.

Meanwhile, the refrigerant discharge channel may have a second convergence region having a smaller diameter along a flow direction of the refrigerant at a boundary region between the refrigerant distribution channel and the refrigerant discharge region.

At this time, the second convergence area may be provided such that the diameter decreases linearly along the flow direction of the refrigerant.

The refrigerant discharge channel is connected to the refrigerant distribution channel and includes a first channel extending from the second end toward the first end; and a second channel connecting the first channel and the refrigerant discharge hole.

Here, the second channel may have a third convergence region having a smaller diameter along a flow direction of the refrigerant in a boundary region with the first channel.

The third convergence area may have a diameter linearly reduced to the refrigerant discharge hole along the flow direction of the refrigerant.

On the other hand, the cutting tool has a first end and a second end in the opposite direction of the first end, a tool body provided with a plurality of cutting blades at the first end and one or more refrigerant discharge holes in the flute, a first inside the tool body It extends along the central axis of the tool body from the end toward the second end, and includes a refrigerant inlet channel into which refrigerant flows from the refrigerant supply channel and a refrigerant discharge channel connecting the refrigerant inlet channel and the refrigerant discharge hole, wherein the refrigerant inlet channel may have a first convergence region whose diameter decreases along the flow direction of the refrigerant at a boundary region between the refrigerant inlet channel and the refrigerant discharge channel.

At this time, the first convergence area may be provided so that the diameter decreases linearly along the flow direction of the fluid.

Meanwhile, the refrigerant discharge channel may include a region extending in a direction from the second end side toward the first end side so that the refrigerant is discharged parallel to the extending direction of the flute.

In addition, the refrigerant discharge channel includes a first channel extending in a radial direction of the tool body and a second channel connecting the first channel and the refrigerant discharge hole, and the second channel has a smaller diameter along the flow direction of the refrigerant. It may have a second convergence area.

The second convergence area may have a diameter linearly reduced to the refrigerant discharge hole along the flow direction of the refrigerant.

Moreover, the refrigerant discharge channel may be provided so that the refrigerant is discharged toward the rake face of the cutting edge.

On the other hand, according to another field of the present invention, the above object can be achieved by a processing apparatus including the above-described tooling kit assembly.

In addition, according to another field of the present invention, the above object is a processing method using a processing device including the above-described tooling kit assembly, rotating a cutting tool, supplying a coolant into the cutting tool through the tooling kit assembly It can be achieved by a processing method comprising the step of spraying a lubricant to the cutting tool through the step and the spraying unit.

The tooling kit assembly of the present invention and a processing apparatus including the same can prevent clogging of the refrigerant channel by preventing the fluid (refrigerant) from changing its phase during the flow of the fluid (refrigerant) along the channel provided inside the tooling kit assembly. Cooling efficiency of the tooling kit assembly by the refrigerant can be improved.

In addition, the tooling kit assembly and the processing apparatus including the same of the present invention, MQL is directly supplied to the cutting tool along the inner flow path of the tooling kit assembly and refrigerant is indirectly supplied to the cutting tool along the inner flow path of the tooling kit assembly. , it is possible to improve the cooling efficiency of the cutting tool and the tooling kit assembly equipped with the cutting tool.

In addition, the tooling kit assembly of the present invention and a processing apparatus performing the same, when the lubricant is sprayed to the cutting tool mounted on the tooling kit assembly, it is sprayed toward the inclined surface of the cutting edge of the cutting tool, so that the lubricating performance during machining of the cutting tool has the effect of improving

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 and 2 are diagrams schematically illustrating a processing apparatus including a tooling kit assembly according to an embodiment of the present invention.
3 is a view showing a cutting tool according to a first embodiment of the present invention.
Figure 4 is a longitudinal cross-sectional view of the cutting tool shown in Figure 3;
FIG. 5 is a view for explaining the diameters of the refrigerant inlet channel, the refrigerant outlet channel, and the refrigerant outlet hole shown in FIG. 3 .
6 is a view showing a cutting tool according to a second embodiment of the present invention.
Fig. 7 is a longitudinal cross-sectional view of the cutting tool shown in Fig. 6;
FIG. 8 is a longitudinal cross-sectional view of a cutting tool having a coolant discharge channel having a different shape from the coolant discharge channel shown in FIG. 7 .
FIG. 9 is a view for explaining a direction in which refrigerant discharged from the refrigerant discharge channel shown in FIG. 8 is sprayed.
10(a) is a diagram illustrating the diameters of the refrigerant inlet channel, the refrigerant discharge channel, and the refrigerant discharge hole of the cutting tool shown in FIG. 7, and FIG. 10(b) is a diagram of the cutting tool shown in FIG. It is a diagram shown to explain the diameters of the refrigerant inlet channel, the refrigerant discharge channel, and the refrigerant discharge hole.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. This invention may be embodied in many different forms and is not limited to the embodiments set forth herein.

It is advised that the drawings are schematic and not drawn to scale. Relative dimensions and proportions of parts in the drawings are shown exaggerated or reduced in size for clarity and convenience in the drawings, and any dimensions are illustrative only and not limiting. And like structures, elements or parts appearing in two or more drawings, like reference numerals are used to indicate like features.

The embodiments of the present invention specifically represent ideal embodiments of the present invention. As a result, various modifications of the drawings are expected. Therefore, the embodiment is not limited to the specific shape of the illustrated area, and includes, for example, modification of the shape by manufacturing.

Hereinafter, a tooling kit assembly 1 according to an embodiment of the present invention and a processing apparatus 1000 including the same will be described with reference to the accompanying drawings.

First, with reference to FIGS. 1 and 2 , a processing device 1000 including a tooling kit assembly 1 according to an embodiment of the present invention will be described.

1 and 2, the processing apparatus 1000 includes a cutting tool 100, a tooling kit assembly 1 to which the cutting tool 100 is mounted, a refrigerant supply unit 13, and a lubricant supply unit 13. can include

The cutting tool 100 is a tool for processing a workpiece.

For reference, one or more cutting tools 100 may be provided as needed. If a plurality of cutting tools 100 are provided, each cutting tool 100 may have a different shape, but is not necessarily limited thereto.

The tooling kit assembly 1 is a part for rotating the cutting tool 100 .

At this time, the tooling kit assembly 1 is provided with a main body 10, an injection unit 12, a refrigerant supply channel 14 and a lubricant supply channel 16.

The main body 12 is a part to which the cutting tool 100 is mounted, and has a rotatable mounting portion 11 .

The mounting portion 11 is rotated in a state where the cutting tool 100 is mounted.

In other words, the mounting part 11 is rotated with the cutting tool 100 connected to one end and the spindle 20 connected to the other end. In this way, as the mounting portion 11 rotates, the cutting tool 100 also rotates.

For reference, the mounting portion 11 may be a member such as a bearing, but is not necessarily limited thereto.

Meanwhile, a spindle 20 is connected to the main body 11 .

Spindle 20 rotates tooling kit assembly 1 . Accordingly, the axis of rotation C of the spindle 20 becomes the center axis of rotation of the tooling kit assembly 1 .

Meanwhile, refrigerants R and R' are introduced into the processing apparatus 1000 according to an embodiment of the present invention.

The refrigerants R and R′ may be cryogenic refrigerants such as liquid nitrogen (LN2), lubricants such as MQL (Minimum Quantity Lubrication), or compressed air, but are not necessarily limited thereto.

Here, the cryogenic refrigerant such as liquid nitrogen flows along the inside of the cutting tool 100 mounted in the tooling kit assembly 1 to indirectly cool the cutting tool 100 .

In addition, lubricant such as MQL or compressed air is directly injected toward the cutting tool 100 mounted on the tooling kit assembly 1 to directly cool the cutting tool 100 .

To this end, a refrigerant supply channel 14 is provided inside the main body 11 of the tooling kit assembly 1 .

The refrigerant supply channel 14 means a flow path for delivering refrigerant to the inside of the cutting tool 100 mounted on the mounting part 11 . The refrigerant supply channel 14 receives a cryogenic refrigerant such as liquid nitrogen or compressed air from a separately provided refrigerant supply unit 13 .

In addition, a lubricant supply channel 16 is provided inside the main body 11 of the tooling kit assembly 1 . The lubricant supply channel 16 means a flow path for supplying lubricant to the injection unit 12 . The lubricant supply channel 16 receives a lubricant such as MQL or compressed air from a separately provided lubricant supply unit 15 .

MQL or compressed air supplied to the lubricant supply channel 16 is supplied to the cutting tool 100 through the injection unit 12 . Here, when MQL or compressed air is directly injected into the cutting tool 100 through the spraying unit 12, the spraying unit 12 is provided to be sprayed toward the rake face of the cutting tool 100.

Meanwhile, a temperature controller 18 may be provided in the processing device 1000 according to an embodiment of the present invention.

The temperature controller 18 may be a kind of heater.

The temperature controller 18 is provided to surround at least a portion of the main body 11 of the tooling kit assembly 1 . In this way, as the temperature control unit 18 is provided, it is possible to prevent overcooling of the mounting unit 11 and sealing (not shown) other than the cutting tool 100 .

For reference, the temperature controller 18 may be controlled by a heater controller 19 connected to the temperature controller 18 .

Hereinafter, the cutting tool 100 according to the first embodiment of the present invention will be described with reference to FIGS. 3 to 10 .

3 to 5, the cutting tool 100 according to the first embodiment of the present invention includes a tool body 110, a refrigerant inlet channel 132 provided inside the tool body 110, and a refrigerant distribution channel. 134 and a refrigerant discharge channel 136.

The tool body 110 has a first end 111 and a second end 112 opposite the first end 111 .

At this time, at least one refrigerant discharge hole 115 is provided at the first end 111 .

The second end 112 is provided with one or more cutting edges 113 (cutting edge). A flute 114 is formed between two cutting edges 113 adjacent to each other.

Since the refrigerant R is discharged to the outside of the cutting tool 100 through the refrigerant discharge hole 115 provided at the first end 111 of the tool body 110, the refrigerant R is directly sprayed to the base material or contact can be prevented.

Generally, the workpiece is positioned closer to the second end 112 of the tool body 110 than to the first end 111. At this time, when the refrigerant R comes into contact with the base material, difficulty occurs in processing the base material using the cutting tool 100 because the base material is cooled by the coolant R and the hardness increases.

However, in the cutting tool 100 according to the first embodiment of the present invention, the refrigerant R is introduced into the tool body 110 through the first end 111, and the second end 111 The refrigerant R flows up to the end 112 to cool the tool body 110 and then is discharged to the outside through the refrigerant discharge hole 115 formed in the first end 111 .

At this time, since the refrigerant R is discharged to the outside through the refrigerant discharge hole 115 formed at the end of the tool body 110, which is far from the base material, the refrigerant R is prevented from being directly injected into the base material and the base material to avoid contact with it as much as possible.

Meanwhile, a space in which the refrigerant R introduced through the first end 111 flows is provided inside the tool body 110 .

In particular, the inside of the tool body 110 includes at least one refrigerant inlet channel 132 , a refrigerant distribution channel 134 and a refrigerant outlet channel 136 .

At this time, the refrigerant inlet channel 132, the refrigerant distribution channel 134, and the refrigerant discharge channel 136 may be formed by the first member 120 and the second member 130 inside the tool body 110. .

The first member 120 is provided inside the tool body 110, has a first hollow part 121 therein, and at least one cutting edge 113 is provided outside.

Here, the first member 120 may be made of tungsten, or may be made of tungsten carbide-based tungsten carbide, high-speed steel, etc., which is used as an alloy of tungsten and carbon, nickel, titanium, etc. It is not necessarily limited to this. In addition, the first member 120 made of such a material may be formed by sintering and grinding.

The second member 130 is inserted into the first hollow portion 121 of the first member 120 and forms one or more of a refrigerant inlet channel 132, a refrigerant distribution channel 134, and a refrigerant outlet channel 136. do.

In this case, the refrigerant inlet channel 132, the refrigerant distribution channel 134, and the refrigerant discharge channel 136 may be formed individually or integrally, but are not necessarily limited thereto.

In addition, the second member 130 has a second hollow part 131 therein, and both longitudinal ends along the central axis C of the tool body 110 have an open shape.

Here, the second hollow part 131 of the second member 130 may have a smaller diameter along a direction from the first end 111 to the second end 112 of the tool body 110 .

The second hollow part 131 of the second member 130 becomes a refrigerant inlet channel 132 .

Meanwhile, the space between the outer circumferential surface of the second member 130 and the inner circumferential surface of the first member 120 becomes a refrigerant discharge channel 136 .

Here, the second member 130 may be made of a material such as copper or aluminum, but is not necessarily limited thereto. In addition, the second member 130 may be formed through machining, and may be assembled into the tool body 110 in the form of a press fit, that is, an interference fit, but is not necessarily limited thereto.

In this way, the inside of the tool body 110 is partitioned by the first member 120 and the second member 130, and the refrigerant inlet channel 132 and the refrigerant distribution channel 134 through which the refrigerant R flows. ) and a refrigerant discharge channel 136 are formed.

Specifically, the refrigerant inlet channel 132 extends from the first end 111 to the second end 112 along the direction of the rotation center axis C of the tool body 110 inside the tool body 110. do.

A heat insulating layer (not shown) is formed on an inner circumferential surface of the refrigerant inlet channel 132 .

As the heat insulation layer is formed on the inner circumferential surface of the refrigerant inlet channel 132, the insulation effect of the refrigerant inlet channel 132 can be improved.

For reference, the heat insulating layer may be a Teflon material, but is not necessarily limited thereto.

The refrigerant distribution channel 134 is connected to the refrigerant inlet channel 132 and extends from the second end 112 toward the cutting edge 113 . At this time, one end of the refrigerant distribution channel 134 has a form in which the refrigerant R flowing from the refrigerant inlet channel 132 is branched to both ends based on the central axis C of the tool body 110 .

That is, the refrigerant distribution channel 134 is a flow path formed in a direction perpendicular to the refrigerant inlet channel 132, so as to improve the movement direction of the refrigerant R introduced into the refrigerant inlet channel 132 toward the refrigerant discharge channel 136. do.

The refrigerant discharge channel 136 connects the refrigerant distribution channel 134 and the refrigerant discharge hole 115 .

The refrigerant R moved along the refrigerant inlet channel 132, the coolant distribution channel 134, and the refrigerant discharge channel 136 is discharged to the outside of the cutting tool 100 through the refrigerant discharge hole 115.

Meanwhile, the refrigerant inlet channel 132 has a first convergence area 133 .

The first convergence area 133 has a shape in which the diameter decreases along the flow direction of the refrigerant R at the boundary area between the refrigerant inlet channel 132 and the refrigerant distribution channel 134 .

At this time, the first convergence area 133 is provided so that the diameter decreases linearly along the flow direction of the refrigerant R. In addition, the first convergence area 133 is provided to continuously decrease to a boundary area between the refrigerant inlet channel 132 and the refrigerant distribution channel 134 along the flow direction of the refrigerant R.

In addition, the second convergence area 135 is also provided in the refrigerant discharge channel 136 .

Like the first convergence region 133 described above, the second convergence region 135 has a shape in which the diameter decreases linearly along the flow direction of the refrigerant R.

At this time, the second convergence area 135 is provided to continuously decrease from the refrigerant discharge channel 136 to the refrigerant discharge hole 115 along the flow direction of the refrigerant R.

The refrigerant discharge channel 136 includes a first channel 137 and a second channel 138.

The first channel 137 is connected to the refrigerant distribution channel 134 and extends from the second end 112 toward the first end 111 .

Here, the third convergence area 139 is provided in the second channel 138 .

The third convergence area 139 has a shape in which the diameter decreases linearly along the flow direction of the refrigerant R.

In particular, the diameter of the third convergence area 139 is linearly reduced to the refrigerant discharge hole 115 along the flow direction of the refrigerant R.

Meanwhile, as shown in FIG. 5 , the maximum diameter D1 of the refrigerant inlet channel 132 may be larger than the maximum diameter D2 of the refrigerant discharge channel 136 . Also, the maximum diameter D2 of the refrigerant discharge channel 136 may be larger than the diameter D3 of the refrigerant discharge hole 115 .

As described above, the maximum diameter D1 of the refrigerant inlet channel 132 is larger than the maximum diameter D2 of the refrigerant discharge channel 136, and the maximum diameter D2 of the refrigerant discharge channel 136 is the refrigerant discharge hole. As the diameter D3 of 115 is formed larger, the flow rate of the refrigerant R becomes faster in the refrigerant discharge hole 115 than in the refrigerant inlet channel 132, and eventually the refrigerant R passes through the cutting tool. The cooling efficiency of (100) is improved.

In addition, in the cutting tool 100 according to the first embodiment of the present invention, the diameters of the first convergence region 133, the second convergence region 135, and the third convergence region 139 are linearly reduced. Accordingly, the refrigerant R is phase-changed in the process of flowing along the refrigerant inlet channel 132, the refrigerant distribution channel 134, and the refrigerant discharge channel 136 formed inside the body 10 of the cutting tool 100. It has a preventive effect.

In addition, when the refrigerant R passes through the first convergence region 133, the second convergence region 135, and the third convergence region 139, the flow rate of the refrigerant R increases, so that the refrigerant inlet channel ( 132), the refrigerant distribution channel 134, and the refrigerant discharge channel 136 can be prevented from being clogged, resulting in an effect of improving the cooling efficiency of the cutting tool 100.

Hereinafter, with reference to FIGS. 6 to 10 , the cutting tool 100 according to the second embodiment of the present invention will be described focusing on differences from the above-described first embodiment.

6 and 7, the cutting tool 100 according to the second embodiment of the present invention includes a tool body 110, a refrigerant inlet channel 132 provided inside the tool body 110, and a refrigerant discharge channel. (136-1).

The refrigerant (fluid; R) supplied to the cutting tool 100 according to the second embodiment of the present invention may be a cryogenic refrigerant such as liquid nitrogen (LN2), a lubricant such as MQL (Minimum quantity lubrication), or compressed air. can

The tool body 110-1 includes a first end 111 and a second end 112 opposite to the first end 111.

At this time, a plurality of cutting edges 113 of the second end 112 are provided, and flutes 114 are formed between adjacent cutting edges.

One or more refrigerant discharge holes 115 are provided in the flute 114 .

In particular, the refrigerant discharge hole 115-1 may be formed along the flute 114 line, or a plurality of refrigerant discharge holes 115 may be provided in one flute 114.

Meanwhile, the refrigerant inlet channel 132 is formed inside the tool body 110-1 from the first end 111 toward the second end 112 along the direction of the central axis C of the tool body 110-1. extension is formed.

The refrigerant discharge channel 136-1 allows the refrigerant R flowing along the refrigerant inlet channel 132 to be discharged through the refrigerant discharge hole 115-1.

To this end, the refrigerant discharge channel 136-1 connects the refrigerant inlet channel 132 and the refrigerant discharge hole 115-1.

On the other hand, the refrigerant inlet channel 132 includes a first convergence area 133 whose diameter decreases along the moving direction of the refrigerant R in the boundary area between the refrigerant discharge channel 136-1 and the refrigerant inlet channel 132. do.

The first convergence area 133 is provided such that the diameter of the first convergence area 133 continuously decreases to the boundary area between the refrigerant inlet channel 132 and the refrigerant outlet channel 136 along the moving direction of the refrigerant R.

Here, the refrigerant discharge channel 136-1 may include a region extending in a direction from the second end 112 side toward the first end 111 side.

At this time, the refrigerant discharge channel 136-1 is provided so that the refrigerant R is discharged parallel to the extension direction of the flute 114.

The extending direction of the flutes 114 means the forming angle of the flutes 114 . In particular, the formation angle of the flute 114 means a helix angle of the flute 114 .

Accordingly, the discharge angle of the refrigerant R discharged through the refrigerant discharge channel 136-1 may be parallel to the extending direction of the flute 114. In other words, the refrigerant discharge channel 136-1 may be formed so that the discharge angle of the refrigerant R is the same as that of the flute 114 rather than the cutting edge 113.

Meanwhile, as shown in FIGS. 6 and 7 , in the cutting tool 100-1 according to the second embodiment of the present invention, the refrigerant discharge channel 136-1 extends from the second end 112 to the first end. It may be formed in a direction toward (111).

The refrigerant discharge channel 136-1 includes a first channel 137-1 and a second channel 138-1.

The first channel 137-1 is connected to the refrigerant inlet channel 132 and extends in the radial direction of the tool body 110-1.

As the first channel 137-1 extends in the radial direction of the tool body 110-1, the refrigerant flows in a direction perpendicular to the flow direction of the refrigerant R introduced through the refrigerant inlet channel 132. (R) change the flow direction.

The second channel 138-1 allows the refrigerant R flowing from the first channel 137-1 to be discharged to the outside through the refrigerant discharge hole 115-1.

Accordingly, the second channel 138-1 connects the first channel 137-1 and the refrigerant discharge hole 115-1 so that the refrigerant R introduced from the refrigerant inlet channel 132 passes through the first channel ( 137-1) to guide the flow toward the refrigerant discharge hole 115-1.

In particular, the second channel 138-1 connects each end of the first channel 137-1 extending in a direction perpendicular to the refrigerant inlet channel 132 and the refrigerant discharge hole 115-1. .

At this time, in the cutting tool 100-1 according to the second embodiment of the present invention, the second channel 138-1 is inclined upward from the second end 112 toward the first end 111. do.

As the second channel 138-1 is inclined upward toward the first end 111, the refrigerant R discharged to the outside through the refrigerant discharge hole 115-1 has an upward injection method. do.

Meanwhile, the formation angle of the second channel 138-1 may be formed to be the same as the formation angle of the flute 114. Accordingly, the second channel 138-1 is formed at the same angle as the discharge angle of the refrigerant R discharged to the outside through the refrigerant discharge hole 115-1 formed at the end of the second channel 138-1. It becomes.

The second channel 138-1 has a second convergence region 135.

The second convergence area 138-1 has a shape in which the diameter decreases along the flow direction of the refrigerant R.

At this time, like the first convergence area 133 of the refrigerant inlet channel 132 described above, the second convergence area 135 is provided to be linearly smaller. In other words, the second convergence area 135 has a shape in which the diameter decreases linearly to the refrigerant discharge hole 115-1 along the flow direction of the refrigerant R.

Meanwhile, as shown in (a) of FIG. 10 , the maximum diameter D1 of the refrigerant inlet channel 132 may be larger than the maximum diameter D2 of the refrigerant discharge channel 136-1. Also, the maximum diameter D2 of the refrigerant discharge channel 136-1 may be larger than the diameter D3 of the refrigerant discharge hole 115-1.

Meanwhile, referring to FIGS. 9 to 10 , a refrigerant discharge channel 136-2 having a different form from the refrigerant discharge channel 136-1 in the cutting tool 100-1 according to the second embodiment of the present invention may be formed.

Specifically, referring to FIG. 9, the refrigerant discharge channel 136-2 is not formed in a direction parallel to the flute 114 formed between two adjacent cutting edges 113, but the cutting edge 113 It is provided so that the refrigerant (R') is discharged toward the rake face of the.

Due to this, the refrigerant R' discharged through the refrigerant discharge channel 136-2 may have a discharge angle parallel to the direction of the inclined surface of the cutting edge 113.

Here, the refrigerant discharge channel 136-2 includes an area extending in a direction from the first end 111 side toward the second end 112 side.

In other words, the refrigerant discharge channel 136 - 2 is inclined downward from the refrigerant inlet channel 132 formed at the first end 111 toward the second end 112 .

As such, as the refrigerant discharge channel 136-2 is inclined downward toward the second end portion 112, the refrigerant R' discharged through the refrigerant discharge hole 115-1 is sprayed downward. will have

In addition, although not shown in the drawings, a convergence area may also be formed in the refrigerant discharge channel 136 inclined downward.

Similar to the first convergence area 133, the convergence area of the refrigerant discharge channel 136-2 has a diameter linearly reduced along the flow direction of the refrigerant R'.

In particular, the convergence area of the refrigerant discharge channel 136-2 is provided so that the diameter continuously decreases from the refrigerant discharge channel 136-2 to the refrigerant discharge hole 115-1 along the flow direction of the refrigerant R'. .

Meanwhile, referring to (b) of FIG. 10 , the maximum diameter D1 of the refrigerant inlet channel 132 of the main body 110 may be larger than the maximum diameter D2 of the refrigerant discharge channel 136-2. . Also, the maximum diameter D2 of the refrigerant discharge channel 136-2 may be larger than the diameter D3 of the refrigerant discharge hole 115-1.

As described above, the maximum diameter D1 of the refrigerant inlet channel 132 is larger than the maximum diameter D1 of the refrigerant discharge channel 136-2, and the maximum diameter D2 of the refrigerant discharge channel 136-2 As the diameter D3 of the refrigerant discharge hole 115-1 is formed larger, the flow rate of the fluid R' is faster in the vicinity of the refrigerant discharge hole 115-2 than in the refrigerant inlet channel 132. As a result, the cooling efficiency of the cutting tool 100-1 by the fluid R' is improved.

In addition, in the cutting tool 100-1 according to the second embodiment of the present invention, as the diameters of the first convergence region 133 and the second convergence region 135 are linearly reduced, the refrigerant (R , R′) is phase-changed in the process of flowing along the refrigerant inlet channel 132 and the refrigerant outlet channels 136-1 and 136-2 formed inside the tool body 110-1 of the cutting tool 100-1. It has the effect of preventing it from happening.

In addition, when the refrigerants R and R' pass through the first convergence region 133 and the second convergence region 135, the flow speed of the refrigerants R and R' increases, so that the refrigerant introduction channel 132 and clogging of the refrigerant discharge channels 136-1 and 136-2 can be prevented, resulting in an effect of improving the cooling efficiency of the cutting tool 100-1.

Hereinafter, a processing method using the processing device 1000 including the tooling kit assemblies 100 and 100-1 according to an embodiment of the present invention will be briefly described.

First, the cutting tool 100 is rotated using the spindle 20 .

At this time, the base material is processed while the cutting tool 100 rotates.

Then, refrigerants R and R′ for cooling the cutting tool 100 are supplied to the inside of the cutting tool 100 using the tooling kit assembly 1 .

For example, a cryogenic refrigerant such as liquid nitrogen is supplied to the tooling kit assembly 1, and the supplied cryogenic refrigerant R, R' flows along the inside of the cutting tool 100 mounted in the tooling kit assembly 1 to cut The tool 100 is subjected to indirect cooling.

To this end, a refrigerant supply channel 14 is provided inside the main body 10 of the tooling kit assembly 1 . The refrigerant supply channel 14 receives cryogenic refrigerants R and R' such as liquid nitrogen from a separately provided refrigerant supply unit 13 .

At this time, the refrigerants (R, R') supplied from the refrigerant supply unit 13 flow inside the cutting tool 100 to indirectly cool the cutting tool 100 and then discharged to the outside through the refrigerant discharge hole 115. do.

At this time, the refrigerant (R) discharged to the outside through the refrigerant discharge hole 115 of the cutting tool 100 according to the first embodiment of the present invention is flute 114 formed in the tool body 110 of the cutting tool 100 ) It may be discharged in an upward direction toward the first end 111 from the second end 112 parallel to the extension direction of the.

In addition, the refrigerant (R′) discharged to the outside through the refrigerant discharge hole 115-1 of the cutting tool 100-1 according to the second embodiment of the present invention flows from the first end 111 to the second end ( 112) may be discharged in a downward direction. At this time, the refrigerant R′ discharged downward through the refrigerant discharge hole 115-1 is discharged to the outside toward the inclined surface of the cutting edge 113 formed on the tool body 110 of the cutting tool 100. .

Accordingly, the refrigerant (R, R') discharged to the outside after flowing inside the cutting tool (100, 100-1) minimizes contact with the base material being processed by the cutting tool (100, 100-1). It becomes.

In addition, a lubricant such as MQL or compressed air is supplied to the tooling kit assembly 1, and the supplied MQL or compressed air is directly sprayed toward the cutting tool 100 mounted on the tooling kit assembly 1 so that the cutting tool 100 can be cooled directly.

To this end, a lubricant supply channel 16 is provided inside the body 10 of the tooling kit assembly 1 . The lubricant supply channel 16 receives lubricant such as MQL from a lubricant supply unit 15 provided separately.

Then, the lubricant is injected into the cutting tool 100 through the injection unit 12 .

Here, the lubricant such as MQL supplied to the lubricant supply channel 16 is injected toward the cutting tool 100 through the injection unit 12 . When a lubricant such as MQL is directly sprayed to the cutting tool 100 through the spraying unit 12, the spraying unit 12 is directly sprayed toward the rake face of the cutting tool 100.

In this way, as the lubricant such as MQL is directly sprayed toward the inclined surface of the cutting tool 100, the cooling efficiency of the cutting tool 100 can be improved.

On the other hand, by the temperature controller 18 provided in the processing device 1000, it is possible to prevent overcooling of the mounting portion 11 or the sealing ring (not shown) on which the cutting tool 100 is mounted.

As described above, in one embodiment of the present invention, specific details such as specific components and limited embodiments and drawings have been described, but this is only provided to help a more general understanding of the present invention, and the present invention is based on the above embodiments. It is not limited, and those skilled in the art can make various modifications and variations from these descriptions. Therefore, the spirit of the present invention should not be limited to the described embodiments and should not be determined, and all things equivalent or equivalent to the claims as well as the following claims belong to the scope of the present invention.

1: Tooling kit assembly
10: main body 11: mounting part
12: injection unit 13: lubricant supply unit
14: refrigerant supply channel 16: lubricant supply channel
15: refrigerant supply unit 18: temperature control unit
19: heater control unit
100, 100-1: cutting tool
110: tool body 111: first end
112: second end 113: cutting edge
114: flute 115, 115-1: refrigerant discharge hole
120: first member 121: first hollow part
130: second member 131: second hollow part
132: refrigerant inlet channel 133: first convergence area
134: refrigerant distribution channel 135: second convergence zone
136, 136-1, 136-2: Refrigerant discharge channel
137, 137-1: first channel 138, 138-1: second channel
139: third convergence zone R, R': refrigerant

Claims (18)

A tooling kit assembly in which a cutting tool is mounted and for rotating the cutting tool,
a body on which a cutting tool is mounted and having a rotatable mounting portion;
a spraying unit provided on the main body and configured to spray lubricant toward the cutting tool;
a refrigerant supply channel provided inside the main body to deliver refrigerant to the inside of the cutting tool mounted on the mounting part of the main body; and
In order to supply lubricant to the injection unit, it includes a lubricant supply channel provided inside the main body,
The injection unit tooling kit assembly provided to spray the lubricant toward the inclined surface of the cutting edge of the cutting tool.
According to claim 1,
A tooling kit assembly comprising a temperature adjusting portion provided to surround at least a portion of a body.
According to claim 1,
cutting tools,
a tool body having a first end and a second end opposite to the first end, and having a refrigerant discharge hole at the first end and a cutting blade at the second end;
a refrigerant inlet channel extending along the central axis of the tool body from the first end to the second end of the tool body, into which refrigerant flows from the refrigerant supply channel;
a refrigerant distribution channel connected to the refrigerant inlet channel and extending from a second end toward the cutting edge; and
A refrigerant discharge channel connecting the refrigerant distribution channel and the refrigerant discharge hole;
The tooling kit assembly of claim 1 , wherein the refrigerant inlet channel has a first convergence region having a smaller diameter along a flow direction of the refrigerant in a boundary region between the refrigerant inlet channel and the refrigerant distribution channel.
According to claim 3,
The tooling kit assembly of claim 1 , wherein the first convergence region has a diameter linearly reduced along the flow direction of the refrigerant.
According to claim 4,
The tooling kit assembly of claim 1 , wherein the first convergence region is provided such that a diameter of the channel continuously decreases to a boundary region between the refrigerant inlet channel and the refrigerant distribution channel along the flow direction of the refrigerant.
According to claim 3,
The tooling kit assembly of claim 1 , wherein the refrigerant discharge channel has a second convergence region having a smaller diameter along a flow direction of the refrigerant at a boundary region between the refrigerant distribution channel and the refrigerant discharge region.
According to claim 6,
The tooling kit assembly of claim 1 , wherein the second convergence region has a diameter linearly reduced along the flow direction of the refrigerant.
According to claim 3,
The refrigerant discharge channel is
a first channel connected to the refrigerant distribution channel and extending from the second end toward the first end; and
A tooling kit assembly comprising a second channel connecting the first channel and the refrigerant discharge hole.
In the eighth,
The tooling kit assembly of claim 1 , wherein the second channel has a third convergence region, the diameter of which decreases along a flow direction of the refrigerant, at a boundary region with the first channel.
According to claim 9,
The tooling kit assembly of claim 1 , wherein the third convergence region has a diameter linearly reduced to the refrigerant discharge hole along the flow direction of the refrigerant.
According to claim 1,
cutting tools,
a tool body having a first end and a second end opposite to the first end, and having a plurality of cutting edges at the first end and at least one refrigerant discharge hole in the flute;
a refrigerant inlet channel extending along the central axis of the tool body from the first end to the second end of the tool body, into which refrigerant flows from the refrigerant supply channel; and
It includes a refrigerant discharge channel connecting a refrigerant inlet channel and a refrigerant discharge hole,
The tooling kit assembly of claim 1 , wherein the refrigerant inlet channel has a first convergence region having a smaller diameter along a flow direction of the refrigerant at a boundary region between the refrigerant inlet channel and the refrigerant discharge channel.
According to claim 11,
The tooling kit assembly of claim 1 , wherein the first convergence region has a diameter linearly reduced along the flow direction of the fluid.
According to claim 11,
The refrigerant discharge channel is
A tooling kit assembly comprising a region extending in a direction from a second end side toward a first end side, provided that the refrigerant is discharged parallel to the extending direction of the flutes.
According to claim 13,
The refrigerant discharge channel is
a first channel extending in a radial direction of the tool body; and
A second channel connecting the first channel and the refrigerant discharge hole;
The tooling kit assembly of claim 1 , wherein the second channel has a second convergence zone that decreases in diameter along a flow direction of the refrigerant.
According to claim 14,
The tooling kit assembly of claim 1 , wherein the second convergence region has a diameter linearly reduced to the refrigerant discharge hole along the flow direction of the refrigerant.
According to claim 11,
The tooling kit assembly of claim 1 , wherein the coolant discharge channel is provided to discharge the coolant toward a rake face of the cutting edge.
A machining apparatus comprising a tooling kit assembly according to claim 1 .
A processing method using the processing device according to claim 17,
rotating the cutting tool;
supplying coolant into the cutting tool through the tooling kit assembly; and
A processing method comprising spraying a lubricant to a cutting tool through a spraying unit.

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