KR102685564B1 - 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 a tooling kit assembly on which a cutting tool is mounted and for rotating the cutting tool, a main body on which the cutting tool is mounted and a rotatable mounting portion, provided on the main body, and applying a lubricant to the cutting tool side. It includes a spraying unit provided for spraying, a refrigerant supply channel provided inside the main body for delivering the refrigerant to the inside of the cutting tool mounted on the mounting portion of the main body, and a lubricant supply channel provided inside the main body for supplying lubricant to the spraying unit, and spraying. The portion is provided so that the lubricant is sprayed toward the inclined surface of the cutting edge of the cutting tool.

Description

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

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

Cutting using machine tools uses a variety of cutting tools.

During cutting using various cutting tools, high temperatures of 1000 to 1500°C occur.

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

Difficult-to-cut materials have high rigidity and hardness, low thermal conductivity, and high affinity with tool materials, resulting in high machining load and temperature, which causes wear and damage to cutting tools. Due to these problems, processability as well as productivity are reduced.

In order to solve the above problems, processing technologies using cryogenic refrigerants have recently been developed.

Meanwhile, cryogenic refrigerant cools tools through 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 the tool by spraying it from the outside of the tool using a separately provided coolant injection nozzle. In the case of the direct injection method, the hardness of the base material increases as the coolant comes into contact with the base material during the process of spraying the coolant, making processing using tools more difficult.

The indirect injection method refers to a method of indirectly cooling the tool by forming a passage through which cryogenic refrigerant can flow inside the tool. In other words, the indirect injection method cools the tool by allowing coolant to flow inside the tool. At this time, since the coolant does not come into contact with the base material, the strength of the base material increases, preventing the problem of difficult machining using tools.

However, in the case of the indirect injection method, while the coolant flows inside the tool, it vaporizes due to a phase change due to a change in the flow cross-sectional area due to the flow of the coolant, blocking the coolant passage, which ultimately reduces the cooling efficiency of the tool using the coolant. There is a problem.

In addition, milling or drilling means that the cutting tool is fixed to the two-ring kit and rotates along with the internal rotation of the tooling kit to machine the workpiece.

At this time, in the case of conventional tooling kits, there are almost no tooling kits that indirectly or directly cool the cutting tool by flowing cryogenic fluid and MQL inside.

Accordingly, there is a need for the development of a cutting tool holder assembly and a processing device including the same that can improve the cooling efficiency of cutting tools as well as tooling kits using indirect or direct injection of fluid.

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

The purpose of the present invention is to provide a tooling kit assembly that can prevent phase change while fluid flows inside the tooling kit and a processing device including the same.

In addition, the object of the present invention is to allow the MQL to be directly supplied to the cutting tool along the internal flow path of the tooling kit assembly or to allow the coolant to be indirectly supplied to the cutting tool along the internal flow path of the tooling kit assembly, so that the cutting tool and the cutting tool are mounted. To provide a tooling kit assembly capable of cooling the tooling kit assembly and a processing device including the same.

The problems to be solved by the present invention are 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, a tooling kit assembly on which a cutting tool is mounted and for rotating the cutting tool, a body on which the cutting tool is mounted and a rotatable mounting portion, provided on the body, and a lubricant applied to the cutting tool side. It includes a spraying unit provided to spray the coolant, a refrigerant supply channel provided inside the main body to deliver the coolant 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 to supply lubricant to the spraying part, The spraying portion may be achieved by a tooling kit assembly provided to spray the lubricant toward the rake surface of the cutting edge of the cutting tool.

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

On the other hand, the cutting tool includes a tool body having a first end provided with a coolant discharge hole through which coolant is discharged, a cutting edge, and a second end where a flute is formed between two adjacent cutting edges, and a first end to the tool body. A coolant inlet channel extending along the direction of the central axis of the tool body from the end toward the second end, through which coolant flows from the coolant supply channel, and a coolant distribution channel connected to the coolant inlet channel and extending from the second end toward the cutting edge. and a refrigerant discharge channel connecting the refrigerant distribution channel and the refrigerant discharge hole, wherein the refrigerant inlet channel has a first convergence area whose diameter decreases along the flow direction of the refrigerant at the boundary area of the refrigerant inlet channel and the refrigerant distribution channel. You can.

Here, the first convergence zone may be provided so that its diameter linearly decreases along the flow direction of the refrigerant.

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

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

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

This 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 it may include a second channel connecting the first channel and the refrigerant discharge hole.

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

This third convergence area may be provided so that its diameter linearly decreases along the flow direction of the refrigerant up to the refrigerant discharge hole.

On the other hand, the cutting tool includes a tool body having a first end provided with a coolant discharge hole through which coolant is discharged, a cutting edge, and a second end where a flute is formed between two adjacent cutting edges, and a first end inside the tool body. It extends along the central axis of the tool body from the end toward the second end, and includes a coolant inlet channel through which coolant flows from the coolant supply channel and a coolant discharge channel connecting the coolant inlet channel and the coolant discharge hole, and the coolant inlet channel. may have a first convergence area whose diameter decreases along the flow direction of the refrigerant at the boundary area between the refrigerant inlet channel and the refrigerant discharge channel.

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

Meanwhile, the refrigerant discharge channel is provided so that the refrigerant is discharged parallel to the extension direction of the flute, and may include an area extending in a direction from the second end side to the first end side.

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

The second convergence area may be provided so that its diameter becomes linearly smaller along the flow direction of the refrigerant up to the refrigerant discharge hole.

Moreover, the coolant discharge channel may be provided to discharge the coolant towards the rake face of the cutting edge.

Meanwhile, according to another field of the present invention, the above object can be achieved by a processing device including the tooling kit assembly described above.

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, including rotating the cutting tool and supplying coolant into the cutting tool through the tooling kit assembly. This can be achieved by a processing method including the step of spraying a lubricant to the cutting tool through a step and a spray portion.

The tooling kit assembly of the present invention and the processing device including the same can prevent a phase change in the process of fluid (refrigerant) flowing along a channel provided inside the tooling kit assembly, thereby preventing clogging of the refrigerant channel. The cooling efficiency of the tooling kit assembly by refrigerant can be improved.

In addition, in the tooling kit assembly of the present invention and the processing device including the same, the MQL is directly supplied to the cutting tool along the internal flow path of the tooling kit assembly, and the coolant is indirectly supplied to the cutting tool along the internal flow path of the tooling kit assembly. , the cooling efficiency of cutting tools and tooling kit assemblies equipped with cutting tools can be improved.

In addition, the tooling kit assembly of the present invention and the processing device that performs the same have a lubricant performance during processing of the cutting tool, as the lubricant is sprayed toward the inclined surface of the cutting edge of the cutting tool when the lubricant is sprayed onto the cutting tool mounted on the tooling kit assembly. There is an effect that can improve.

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 schematic diagrams of a processing device including a tooling kit assembly according to an embodiment of the present invention.
Figure 3 is a diagram showing a cutting tool according to the 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 diagram for explaining the diameters of the refrigerant inlet channel, refrigerant discharge channel, and refrigerant discharge hole shown in FIG. 3.
Figure 6 is a diagram showing a cutting tool according to a second embodiment of the present invention.
Figure 7 is a longitudinal cross-sectional view of the cutting tool shown in Figure 6.
FIG. 8 is a longitudinal cross-sectional view of a cutting tool having a coolant discharge channel of a different type from the coolant discharge channel shown in FIG. 7.
FIG. 9 is a diagram illustrating the injection direction of the refrigerant discharged from the refrigerant discharge channel shown in FIG. 8.
FIG. 10(a) is a diagram illustrating the diameters of the coolant inlet channel, coolant discharge channel, and coolant discharge hole of the cutting tool shown in FIG. 7, and FIG. 10(b) is a diagram of the cutting tool shown in FIG. 8. This diagram is shown to explain the diameters of the refrigerant inlet channel, refrigerant discharge channel, and refrigerant discharge hole.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. The invention may be implemented in many different forms and is not limited to the embodiments described herein.

Please note that the drawings are schematic and not drawn to scale. The 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 are not limiting. And for identical structures, elements, or parts that appear in two or more drawings, the same reference numerals are used to indicate similar features.

Embodiments of the present invention specifically represent ideal embodiments of the present invention. As a result, various variations of the drawing are expected. Accordingly, the embodiment is not limited to the specific shape of the illustrated area and also includes changes in shape due to manufacturing, for example.

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

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

As shown in FIGS. 1 and 2, the processing device 1000 includes a cutting tool 100, a tooling kit assembly 1 equipped with the cutting tool 100, a coolant supply unit 13, and a lubricant supply unit 13. It can be included.

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

For reference, more than one cutting tool 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 on which the cutting tool 100 is mounted and has a rotatable mounting portion 11.

The mounting portion 11 is rotated while the cutting tool 100 is mounted on it.

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.

The spindle (20) rotates the tooling kit assembly (1). Accordingly, the rotation axis C of the spindle 20 becomes the rotation central axis of the tooling kit assembly 1.

Meanwhile, refrigerants (R, R') are introduced into the processing device 1000 according to an embodiment of the present invention.

The refrigerants (R, 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, a cryogenic refrigerant such as liquid nitrogen flows along the inside of the cutting tool 100 mounted on the tooling kit assembly 1 and indirectly cools the cutting tool 100.

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

For this purpose, a coolant supply channel 14 is provided inside the main body 11 of the tooling kit assembly 1.

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

Additionally, a lubricant supply channel 16 is provided inside the main body 11 of the tooling kit assembly 1. The lubricant supply channel 16 refers to a passage 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 spray unit 12. Here, when MQL or compressed air is directly sprayed to the cutting tool 100 through the spray unit 12, the spray unit 12 is provided to be sprayed toward the rake face of the cutting tool 100.

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

The temperature control unit 18 may be a type of heater.

This temperature control unit 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 supercooling of the mounting unit 11 and the sealing (not shown), rather than the cutting tool 100.

For reference, the temperature control unit 18 may be controlled by the heater control unit 19 connected to the temperature control unit 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 coolant inlet channel 132 provided inside the tool body 110, and a coolant distribution channel. (134) and a refrigerant discharge channel (136).

Tool body 110 has a first end 111 and a second end 112.

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

One or more cutting edges (113) are provided at the second end 112. A flute 114 is formed between two cutting edges 113 adjacent to each other.

Since the coolant (R) is discharged to the outside of the cutting tool 100 through the coolant discharge hole 115 provided at the first end 111 of the tool body 110, the coolant (R) is sprayed directly onto the base material or This can prevent contact.

In general, the base material is positioned closer to the second end 112 of the tool body 110 than to the first end 111. At this time, when the coolant (R) comes into contact with the base material, the base material is cooled by the coolant (R) and its hardness increases, causing difficulty in processing the base material using the cutting tool 100.

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

At this time, since the coolant (R) is discharged to the outside through the coolant discharge hole 115 formed at the end of the tool body 110, which is located far from the base material, the coolant (R) is prevented from being sprayed directly onto the base material. Contact can be prevented as much as possible.

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

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

At this time, the coolant inlet channel 132, the coolant distribution channel 134, and the coolant 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 portion 121 inside, and has at least one cutting edge 113 outside.

Here, the first member 120 may be made of tungsten, tungsten carbide-based carbide used as an alloy of tungsten, carbon, nickel, titanium, etc., high-speed steel, etc. It is not necessarily limited to this. Additionally, the first member 120 made of this 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 discharge channel 136. do.

At this time, 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 portion 131 inside, and both longitudinal ends along the central axis C of the tool body 110 are open.

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

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

Meanwhile, the space between the outer peripheral surface of the second member 130 and the inner peripheral 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. Additionally, the second member 130 may be formed through machining and may be assembled into the tool body 110 by press-fitting, that is, in the form of an interference fit, but is not necessarily limited thereto.

In this way, the interior of the tool body 110 is divided into a space by the first member 120 and the second member 130, and the coolant inlet channel 132 through which the coolant (R) flows, and the coolant distribution channel 134 ) and a refrigerant discharge channel 136 is formed.

Specifically, the coolant inlet channel 132 is formed inside the tool body 110 extending from the first end 111 toward the second end 112 along the direction of the rotation center axis C of the tool body 110. do.

The refrigerant inlet channel 132 has an insulating layer (not shown) formed on its inner circumferential surface.

As the insulating layer is formed on the inner peripheral surface of the refrigerant inlet channel 132, the insulating effect of the refrigerant inlet channel 132 can be improved.

For reference, the insulation layer may be made of Teflon, but is not necessarily limited thereto.

The coolant distribution channel 134 is connected to the coolant inlet channel 132 and extends from the second end 112 toward the cutting edge 113. At this time, one end of the coolant distribution channel 134 has a shape in which the coolant (R) flowing from the coolant 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, and is designed to improve the movement direction of the refrigerant (R) flowing into the refrigerant inlet channel 132 to 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 cold exhaust 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 becomes smaller 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 to have a linearly smaller diameter along the flow direction of the refrigerant (R). In addition, the first convergence area 133 is provided to continuously become smaller along the flow direction of the refrigerant (R) up to the boundary area between the refrigerant inlet channel 132 and the refrigerant distribution channel 134.

Additionally, a second convergence area 135 is provided in the refrigerant discharge channel 136.

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

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

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

The third convergence region 139 has a shape whose diameter decreases linearly along the flow direction of the refrigerant (R).

In particular, the third convergence area 139 is provided so that its diameter becomes linearly smaller along the flow direction of the refrigerant R up to the refrigerant discharge hole 115.

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. Additionally, 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 formed to be larger than the maximum diameter (D2) of the refrigerant discharge channel 136, and the maximum diameter (D2) of the refrigerant discharge channel 136 is larger than the maximum diameter (D2) of the refrigerant discharge channel 136. As the diameter D3 of (115) is formed to be large, the flow speed of the refrigerant (R) becomes faster in the refrigerant discharge hole 115 compared to the refrigerant inlet channel 132, resulting in the cutting tool being cut through the refrigerant (R). The cooling efficiency of (100) is improved.

In addition, the cutting tool 100 according to the first embodiment of the present invention is provided so that the diameters of the first convergence area 133, the second convergence area 135, and the third convergence area 139 are linearly reduced. Accordingly, the refrigerant (R) changes phase 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 main body 10 of the cutting tool 100. This has the effect of preventing this.

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 speed of the refrigerant (R) increases and the refrigerant inlet channel ( 132), clogging of the coolant distribution channel 134 and the coolant discharge channel 136 can be prevented, which ultimately has the 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 coolant inlet channel 132 and a coolant discharge channel provided inside the tool body 110. Includes (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. You can.

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

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

The flute 114 is provided with one or more refrigerant discharge holes 115.

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

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

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.

Meanwhile, the refrigerant inlet channel 132 includes a first convergence area 133 whose diameter decreases along the direction of movement of the refrigerant (R) at the boundary area between the refrigerant discharge channel 136-1 and the refrigerant inlet channel 132. do.

The first convergence area 133 is provided so that its diameter continues to decrease along the direction of movement of the refrigerant R up to the boundary area between the refrigerant inlet channel 132 and the refrigerant discharge channel 136.

Here, the refrigerant discharge channel 136-1 may include an area extending in a direction from the second end 112 side to 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 extension direction of the flute 114 refers to the formation angle of the flute 114. In particular, the formation angle of the flute 114 refers to the 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 extension 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 the formation angle of the flute 114, not 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 coolant discharge channel 136-1 extends from the second end 112 to the first end. It can be formed in a direction facing (111).

This 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 coolant inlet channel 132 and extends in the radial direction of the tool body 110-1.

As the first channel 137-1 is formed to extend in the radial direction of the tool body 110-1, the coolant flows in a direction perpendicular to the flow direction of the coolant R flowing through the coolant inlet channel 132. Change the flow direction of (R).

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 flowing in from the refrigerant inlet channel 132 flows through the first channel (137-1). It is guided to flow toward the refrigerant discharge hole (115-1) through 137-1).

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 formed to be inclined upward from the second end 112 toward the first end 111. do.

As the second channel 138-1 is formed to be 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 to be equal to 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 will happen.

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

The second convergence region 138-1 has a shape in which the diameter becomes smaller along the flow direction of the refrigerant (R).

At this time, like the first convergence area 133 of the refrigerant inflow 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 diameter that linearly decreases along the flow direction of the refrigerant R up to the refrigerant discharge hole 115-1.

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. Additionally, 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 and 10, the refrigerant discharge channel 136-2 is of a different type 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 is formed in a direction parallel to the cutting edge 113. The refrigerant (R') is provided to be discharged toward the rake face.

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 to the second end 112 side.

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

In this way, as the refrigerant discharge channel 136-2 is formed to be inclined downward toward the second end 112, the refrigerant R' discharged through the refrigerant discharge hole 115-1 is sprayed downward. will have

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

Like the first convergence area 133, the convergence area of the refrigerant discharge channel 136-2 is provided to have a linearly smaller diameter along the flow direction of the refrigerant R'.

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

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. . Additionally, 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 formed to be 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 to be larger, the flow speed 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, the cutting tool 100-1 according to the second embodiment of the present invention is provided so that the diameters of the first convergence area 133 and the second convergence area 135 are linearly reduced, so that the coolant (R , R') changes phase in the process of flowing along the coolant inlet channel 132 and the coolant discharge channel (136-1, 136-2) formed inside the tool body 110-1 of the cutting tool 100-1. It has the effect of preventing this from happening.

In addition, when the refrigerants (R, R') pass through the first convergence area 133 and the second convergence area 135, the flow speed of the refrigerants (R, R') increases, thereby increasing the refrigerant inlet channel 132. and clogging of the refrigerant discharge channels 136-1 and 136-2, which ultimately has the 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 assembly 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 cutting tool 100 rotates and the base material is processed.

Next, refrigerants (R, R') for cooling the cutting tool 100 are supplied into 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 on the tooling kit assembly 1 to cut. The tool 100 is allowed to cool indirectly.

For this purpose, a coolant 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, R') such as liquefied nitrogen from a separately provided refrigerant supply unit 13.

At this time, the refrigerant (R, R') supplied from the refrigerant supply unit 13 flows inside the cutting tool 100 to indirectly cool the cutting tool 100 and is 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 the flute 114 formed in the tool body 110 of the cutting tool 100. ) may be discharged in an upward direction from the second end 112 toward the first end 111 so as to be parallel to the direction of extension of ).

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 ( It can be discharged in a downward direction toward 112). At this time, the refrigerant (R') discharged in the downward direction 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) has minimal contact with the base material processed by the cutting tool (100, 100-1). It will happen.

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) to cut the cutting tool (100). can be cooled directly.

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

Next, the lubricant is sprayed into the inside of the cutting tool 100 through the spray unit 12.

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

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

Meanwhile, the temperature control unit 18 provided in the processing device 1000 can prevent supercooling of the mounting unit 11 or sealing (not shown) on which the cutting tool 100 is mounted.

As described above, an embodiment of the present invention has been described with specific details such as specific components and limited examples and drawings, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiment. It is not limited, and various modifications and variations can be made from these descriptions by those skilled in the art. Accordingly, the spirit of the present invention should not be limited to the described embodiments, and all claims that are equivalent or equivalent to the claims as well as the following claims fall within 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 tools
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: 1st channel 138, 138-1: 2nd channel
139: Third convergence region R, R': Refrigerant

Claims (18)

A tooling kit assembly on which a cutting tool is mounted and for rotating the cutting tool,
A main body on which a cutting tool is mounted and which has a rotatable mounting portion;
a spray portion provided in the main body and provided to spray lubricant toward the cutting tool;
A refrigerant supply channel provided inside the main body to deliver the refrigerant into the cutting tool mounted on the mounting portion 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 spray portion is provided to spray the lubricant toward the inclined surface of the cutting edge of the cutting tool,
cutting tools,
A tool body having a first end provided with a coolant discharge hole through which coolant is discharged, a cutting edge, and a second end where a flute is formed between two adjacent cutting edges;
a coolant inlet channel extending along the central axis of the tool body from the first end to the second end of the tool body, and through which coolant flows from the coolant supply channel;
a coolant distribution channel connected to the coolant inlet channel and extending at the second end toward the cutting edge; and
It includes a refrigerant discharge channel connecting the refrigerant distribution channel and the refrigerant discharge hole,
The refrigerant inlet channel has a first convergence area whose diameter decreases along the flow direction of the refrigerant at the boundary area between the refrigerant inlet channel and the refrigerant distribution channel,
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,
The first channel of the refrigerant discharge channel has a second convergence area whose diameter decreases along the flow direction of the refrigerant at the boundary area between the first channel and the refrigerant discharge channel,
The second channel of the refrigerant discharge channel has a third convergence area whose diameter decreases along the flow direction of the refrigerant at the boundary area between the first channel and the second channel,
A tooling kit assembly wherein the maximum diameter of the refrigerant inlet channel is formed to be larger than the maximum diameter of the refrigerant discharge channel, and the maximum diameter of the refrigerant discharge channel is formed to be larger than the diameter of the refrigerant discharge hole.
According to paragraph 1,
A tooling kit assembly comprising a temperature control portion arranged to surround at least a portion of a body.
delete According to paragraph 1,
A tooling kit assembly in which the first convergence zone is provided to have a linearly smaller diameter along the flow direction of the refrigerant.
According to paragraph 4,
The first convergence area is a tooling kit assembly wherein the diameter of the first convergence area is continuously reduced along the flow direction of the coolant up to the boundary area of the coolant inlet channel and the coolant distribution channel.
delete According to paragraph 1,
A tooling kit assembly wherein the second convergence zone is provided to have a linearly smaller diameter along the flow direction of the refrigerant.
According to paragraph 1,
The second convergence area is a tooling kit assembly wherein the diameter is continuously decreased along the flow direction of the coolant from the coolant discharge channel to the coolant discharge hole.
delete According to paragraph 1,
The third convergence area is a tooling kit assembly whose diameter is linearly reduced along the flow direction of the refrigerant up to the refrigerant discharge hole.
delete delete delete delete delete delete A processing device comprising a tooling kit assembly according to claim 1.
A processing method using the processing device according to paragraph 17,
rotating the cutting tool;
Supplying coolant into the cutting tool through the tooling kit assembly; and
A machining method comprising spraying a lubricant to a cutting tool through a spray portion.

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