WO2021002451A1

WO2021002451A1 - Machining cooling device

Info

Publication number: WO2021002451A1
Application number: PCT/JP2020/026173
Authority: WO
Inventors: 幸之助堀内; 三男高橋; 力荒川; 遼平和野
Original assignee: 株式会社Ｇｌｏｂｅ
Priority date: 2019-07-04
Filing date: 2020-07-03
Publication date: 2021-01-07
Also published as: CN113905848A; CN113905848B; JPWO2021002451A1; TW202110568A

Abstract

[Problem] To provide a machining cooling device that can perform cooling properly even when machining with a tool progresses deep into a workpiece. [Solution] An outlet 13 of a direction changing part 11 is provided on a front surface of a projecting part 8. This makes it possible to place the outlet 13 in the vicinity of a tool 6 supported by a tool holder 5. Placing the outlet 13 in the vicinity of and adjacent to the tool 6 supported by the tool holder 5 allows a cooling oil 7 to be injected from the outlet 13 along an outer surface of the tool 6 and in parallel therewith so as to be close enough to come in contact therewith. Thus, even when machining of a workpiece 2 with the tool 6 progresses deep into the workpiece 2, most of the cooling oil 7 injected from the outlet 13 reaches, through a gap between an internal hole 23 of the workpiece 2 and the tool 6, a machined portion located deep in the workpiece 2 and defined by the workpiece 2 and a tip of a cutting part 18 of the tool 6, without being splashed by a front surface of the workpiece 2 facing a jet orifice part 10. As a result, the machined portion defined by the workpiece 2 and the tool 6 is cooled properly by the cooling oil 7.

Description

Processing cooling device

The present invention relates to a processing cooling device and a cooling method.

As shown in FIG. 18, in the processing cooling device disclosed in Patent Document 1, an injection nozzle 73 is provided on the front surface of the tool holder 72 installed on the tool post 71, and the injection nozzle 73 is supported by the tool holder 72. The injection nozzle 73 could not be placed near the tool 74, and the injection nozzle 73 was arranged outward from the tool 74, and the injection nozzle 73 directed the cooling oil 74 from the position away from the tool 74 toward the cutting edge of the tool 74. It has a structure that sprays diagonally. Therefore, as shown in FIG. 19, when the machining of the work 76 by the tool 74 proceeds to the depth of the work 76, most of the cooling oil 75 injected from the injection nozzle 73 faces the front surface of the work 76 facing the injection nozzle 73. There is a drawback that the amount of cooling oil that reaches the machined portion by the work 76 located at the back of the work 76 and the cutting edge of the tool 74 is reduced, and the cooling between the work 76 and the cutting edge of the tool 74 is deteriorated.

Practical Restoration Plan Registration No. 3143544

The present invention has been made in view of the above background technology, and an object of the present invention is to provide a machining cooling device capable of satisfactorily cooling even if machining by a tool progresses to the depth of a work.

The present invention is a machining cooling device that cools a portion of a work installed in a work installation portion to be machined with a tool supported by a tool post in the tool installation portion with cooling oil, and the machining cooling device has a protrusion. The cooling oil injected into the space from the injection port is introduced into the protrusion from the outer peripheral surface of the protrusion and is led out from the front surface of the protrusion toward the processed portion. It is characterized in that both the cooling oil introduction portion and the outlet portion in the direction changing portion are configured as openings. In other words, in the present invention, the cooling oil is blown into the space from the injection port provided on the front surface of the tool post, and the direction in which the cooling oil blown into this space flows is projected toward the work from the tool post. It is converted by the direction changing part provided in the part, and the cooling oil whose flow direction is changed is transferred from the opening provided as the lead-out part of the direction changing part to the machined part by the work and the tool on the front surface of the protrusion of the tool holder. It is characterized by deriving.

In the present invention, since an outlet as a lead-out portion of the direction changing portion is provided on the front surface of the protrusion protruding toward the work from the tool post of the tool holder, the outlet can be arranged near the tool, and the outlet is the tool. By being placed close to adjacent to, the cooling oil can be ejected in parallel from the outlet along and in contact with the outer surface of the tool. Therefore, even if the machining of the work by the tool progresses to the back of the work, most of the cooling oil injected from the outlet does not bounce off the front surface facing the injection nozzle of the work, and the internal holes and tools machined in the work. It has the effect of reaching the machined part by the work located at the back of the work and the tip of the blade of the tool through the gap between the work and the tool, and the machined part by the work and the tool is cooled well by the cooling oil. .. Further, in the present invention, since the injection port portion injects the cooling oil into the space on the front surface of the tool post facing the work, it is not necessary to connect the injection port portion and the direction changing portion of the protrusion by piping. When replacing the tool holder, only the tool holder needs to be removed from the tool post, and the tool holder can be easily replaced. In the present invention, the direction changing portion passes through the center from the center line extending in the vertical direction at the upper part between the center line extending in the vertical direction through the center of the protrusion and the center line extending in the horizontal direction through the center. A straight line having an angle θ1 of 30 to 45 degrees with respect to the center line extending in the left-right direction is provided at a point where a straight line intersects with one circumference centered on the center, and extends in the vertical direction. If it is provided at the intersection of the center line and the circumference, the tool holder can be used for the tool post of a processing machine manufactured by various manufacturing companies. In the present invention, if the sandwiching angle between the center line of the hole on the side of the introduction portion and the center line of the tool accommodating hole is provided at 45 to 55 degrees, the cooling oil 7 is bundled without being scattered from the outlet 13. Be ejected. In the present invention, if the sandwiching angle between the center line of the hole on the side of the lead-out portion and the center line of the tool accommodating hole is provided at 0 to 15 degrees, the cooling oil 7 is bundled without being scattered from the outlet 13. Be ejected. The structure of the present invention is simple if the direction changing portion is configured on a flat slope that gradually becomes a downward slope from the side of the cooling oil introduction portion to the side of the outlet portion. In the present invention, if the angle between the flat slope and the center line of the tool accommodating hole is provided at 0 to 15 degrees, the cooling oil is closer to be in contact with the outer surface of the tool from the outlet. Can be ejected in parallel with.

The cross-sectional view which shows the processing cooling apparatus which concerns on Embodiment 1 for carrying out an invention. The cross-sectional view which shows the processing cooling apparatus which concerns on Embodiment 2 for carrying out an invention. The cross-sectional view which shows the processing cooling apparatus which concerns on Embodiment 3 for carrying out an invention. The cross-sectional view which shows the processing cooling apparatus which concerns on Embodiment 4 for carrying out an invention. The cross-sectional view which shows the processing cooling apparatus which concerns on Embodiment 5 for carrying out an invention. The cross-sectional view which shows the processing cooling apparatus which concerns on Embodiment 6 for carrying out an invention. The cross-sectional view which shows the processing cooling apparatus which concerns on Embodiment 7 for carrying out an invention. The perspective view which shows the tool holder which concerns on Embodiment 8 for carrying out an invention. The front view which shows the tool holder which concerns on Embodiment 8 for carrying out an invention. FIG. 9 is a cross-sectional view taken along the line 101-101 of FIG. The rear view which shows the tool holder which concerns on Embodiment 8 for carrying out an invention. The perspective view which shows the combination of the tool post and a tool holder which concerns on Embodiment 9 for carrying out an invention. The schematic diagram which shows the investigation result of the position where the injection port part was provided about the tool post in developing the tool holder which concerns on Embodiment 10 for carrying out the invention. FIG. 6 is a schematic view showing a verification result regarding an angle between a vertical hole on the inlet side and a horizontal hole on the outlet side of the direction changing unit in developing the tool holder according to the eleventh embodiment for carrying out the invention. The schematic diagram which shows the verification result about the relationship between the three direction change part, the tool accommodating hole, and a set screw in the tool holder which concerns on Embodiment 12 for carrying out the invention. A tool holder according to a thirteenth aspect for carrying out the invention is shown. A is a front view, B is a side view, C is a plan view, D is a front view, E is a side view, and F is a plan view. .. A tool holder according to a fourteenth aspect for carrying out the invention is shown, FIG. A is a front view, FIG. B is a side view, and FIG. C is a plan view. A side view showing a conventional processing cooling device. The side view which shows the case where the machining by the tool with respect to the workpiece of the conventional machining cooling apparatus progresses to the depth of the workpiece. The front view of the tool holder of FIG. 15C of FIG. 15 of Embodiment 12 for carrying out the invention. The rear view of the tool holder of FIG. 15C of FIG. 15 of Embodiment 12 for carrying out the invention. The left side view of the tool holder of FIG. 15C of FIG. 15 of the embodiment 12 for carrying out the invention. The right side view of the tool holder of FIG. 15C of FIG. 15 of the embodiment 12 for carrying out the invention. FIG. 15 is a plan view of the tool holder of FIG. 15C of FIG. 15 of the embodiment 12 for carrying out the invention. The bottom view of the tool holder of FIG. 15C of FIG. 15 of the embodiment 12 for carrying out the invention. FIG. 15A is a cross-sectional view taken along the line AA in the front view of the tool holder of FIG. 15C of FIG. FIG. 15 is a perspective view of the tool holder of FIG. 15C of FIG. 15 of the embodiment 12 for carrying out the invention. The front view which shows the characteristic part of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention by a solid line, and the others by a broken line. The rear view which shows the characteristic part of the tool holder of FIG. 15C of FIG. 15 of Embodiment 12 for carrying out the invention by a solid line, and the others by a broken line. The left side view which shows the characteristic part of the tool holder of FIG. 15C of FIG. 15 of FIG. The right side view which shows the characteristic part of the tool holder of FIG. 15C of FIG. 15 of FIG. The plan view which shows the characteristic part of the tool holder of FIG. 15C of FIG. 15 of Embodiment 12 for carrying out the invention by a solid line, and the others by a broken line. The bottom view which shows the characteristic part of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention by a solid line, and the others by a broken line. A cross-sectional view taken along the line AA in a front view showing a characteristic portion of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention by a solid line and the other by a broken line. The perspective view which shows the characteristic part of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention by a solid line, and the others by a broken line. FIG. 5 is a front view of a portion of a protrusion provided with a direction changing portion of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention. The rear view of the part of the protrusion provided with the direction change part of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention. The left side view of the portion of the protrusion provided with the direction changing portion of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention. The right side view of the portion of the protrusion provided with the direction change portion of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention. FIG. 5 is a plan view of a portion of a protrusion provided with a direction changing portion of the tool holder shown in FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention. The bottom view of the portion of the protrusion provided with the direction changing portion of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention. A cross-sectional view taken along the line AA in the front view of the portion of the protrusion provided with the direction changing portion of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention. FIG. 5 is a perspective view of a portion of a protrusion provided with a direction changing portion of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention. The front view which shows the characteristic part of the protrusion part provided with the direction change part of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention by a solid line, and the others by a broken line. The rear view which shows the characteristic part of the protrusion part provided with the direction change part of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention by a solid line, and the others by a broken line. The left side view which shows the characteristic part of the protrusion part provided with the direction change part of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention by a solid line, and the others by a broken line. The right side view which shows the characteristic part of the protrusion part provided with the direction change part of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention by a solid line, and the others by a broken line. The plan view which shows the characteristic part of the protrusion part provided with the direction change part of the tool holder of FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention by a solid line, and the others by a broken line. The bottom view which shows the characteristic part of the protrusion part provided with the direction change part of the tool holder of FIG. 15C of FIG. 15 of FIG. A cross-sectional view taken along the line in the front view in which the characteristic portion of the protruding portion provided with the direction changing portion of the tool holder in FIG. 15C of FIG. .. FIG. 5 is a perspective view in which the characteristic portion of the protruding portion provided with the direction changing portion of the tool holder shown in FIG. 15C of FIG. 15 of FIG. 15 for carrying out the invention is represented by a solid line and the others are represented by a broken line.

The machining cooling device according to the first embodiment shown in FIG. 1 exemplifies boring with a turret lathe as a machining device, and a blade of the tool mounting section 3 with respect to the work 2 installed in the work setting section 1. The cooling oil 7 is supplied from the side of the tool installation portion 3 to the portion to be machined by the tool 6 supported by the tool holder 5 installed on the table 4.

Then, on the front surface of the tool post 4 facing the work 2, the injection port 10 directs the cooling oil 7 toward the outer peripheral surface of the protrusion 8 protruding from the tool holder 5 toward the work 2 and in space. It is provided so as to inject into 9. The injection port portion 10 may have a structure provided with an injection nozzle.

Further, the direction changing portion 11 introduces the cooling oil 7 injected into the space 9 from the injection port portion 10 into the protrusion 8 from the outer peripheral surface of the protrusion 8 from the front surface of the protrusion 8 facing the work 2. It is provided so as to be led out toward the machined portion by the work 2 and the tool 6.

Further, both the introduction portion 12 of the cooling oil 7 on the outer peripheral surface of the protrusion 8 and the outlet portion 13 of the cooling oil 7 on the front surface of the protrusion 8 of the direction changing portion 11 are configured as openings.

Hereinafter, the introduction portion 12 of the cooling oil 7 is referred to as an inlet 12, and the outlet portion 13 of the cooling oil 7 is referred to as an outlet 13.

According to the machining cooling device shown in FIG. 1, since the outlet 13 of the direction changing portion 11 is provided on the front surface of the protrusion 8, the outlet 13 is arranged near the tool 6 supported by the tool holder 5. And by arranging the outlet 13 close to the tool 6 supported by the tool holder 5, the cooling oil 7 is close to the outlet 13 along and in contact with the outer surface of the tool 6. Eject in parallel.

Therefore, even if the machining of the work 2 by the tool 6 proceeds to the back of the work 2, most of the cooling oil 7 ejected from the outlet 13 does not bounce off the front surface of the work 2 facing the injection port portion 10 of the work 2. Through the gap between the internal hole 23 of 2 and the tool 6, the work 2 located at the back of the work 2 and the tip of the blade 18 of the tool 6 reach the machined portion, and the work 2 and the tool 6 work. The portion is cooled well with the cooling oil 7.

In FIG. 1, the portion between the inlet 12 and the outlet 13 of the direction changing portion 11 opens to the outer peripheral surface and the front surface of the protrusion 8, and the depth from the outer peripheral surface to the inside of the protrusion 8 is the tool post 4. The structure of the direction changing portion 11 is simple because it has a groove shape with an arcuate bottom that goes from the inlet 12 on the side of the work to the exit 13 on the side of the work installation portion 1.

The work 2 is captured and installed from the outside by a plurality of claws 15 provided in the work installation portion 1 in the work installation portion 1 called the work chuck of the turret lathe. The work 2 installed in the work installation unit 1 circulates around the center line of the work installation unit 1 extending in the lateral direction in one direction with the rotation drive of the work installation unit 1. It is driven to rotate. A tool 6 called a boring bar is attached to one tool post 4 in a tool installation portion 3 called a turret of a turret lathe with a tool holder 5 interposed therebetween.

Specifically, inside the tool post 4, a holder accommodating hole 16 is formed laterally from the front surface of the tool post 4 facing the work 2 toward the rear end side. The tool 6 includes a main body portion 17, a blade portion 18, and an attachment portion 19 to the tool holder 5. The main body 17 is located on the side facing the work 2 and has a long rod shape in the lateral direction. The blade portion 18 is provided at the front end portion of the main body portion 17 on the side facing the work 2. The mounting portion 19 has a rod shape extending concentrically from the main body portion 17 to the rear side.

The tool holder 5 includes a protrusion 8, a mounting portion 21 to the tool post 4, and a tool accommodating hole 22. The protrusion 8 has a larger outer shape than the mounting portion 21. The mounting portion 21 has a smaller outer shape than the protruding portion 8. The tool accommodating hole 22 is formed laterally in the center of the tool holder 5 from the front surface on the side facing the work installation portion 1 toward the side of the mounting portion 21. Then, the mounting portion 19 of the tool 6 is accommodated and fixed in the tool accommodating hole 22 from the front side of the tool holder 5, and the main body portion 17 and the blade portion 18 of the tool 6 face the work 2 rather than the protruding portion 8 of the tool holder 5. It is projected to the side to be used.

In FIG. 1, the work 2 installed in the work installation unit 1 has a tool (not shown) attached to one tool stand (not shown) provided in the tool installation unit 3 other than the tool 6. The embodiment in which the internal hole 23 is formed in advance in a barrel shape from the front surface on the side of the work 2 facing the tool installation portion 3 toward the inside is illustrated.

Then, the work 2 is rotationally driven by the work installation portion 1, and the main body portion 17 and the blade portion 18 of the tool 6 are inserted into the inside of the internal hole 23 from the opening on the side of the internal hole 23 of the work 2 facing the tool installation portion 3. In this state, the blade portion 18 moves outward in the radial direction with respect to the rotation of the work 2 and moves laterally with the center line extending with respect to the rotation of the work 2 due to the machining operation of the tool post 4 with respect to the tool installation portion 3. The boring hole 24 having a diameter larger than that of the internal hole 23 is machined. That is, when machining the work 2 with the tool 6, the work 2 is rotationally driven, and the tool 6 does not rotate and moves outward in the radial direction with respect to the rotation of the work 2 and the lateral direction in which the center line extends with respect to the rotation of the work 2. However, it can be applied at least by moving in the lateral direction in which the center line extends with respect to the rotation of the work 2.

Cooling oil 7 pressurized to a predetermined pressure is supplied to the injection port portion 10 from a supply source (not shown) via a supply path (not shown) provided inside the tool post 4. The supplied cooling oil 7 is injected from the injection port portion 10 toward the inlet 12 into the space in front of the tool post 4. Since the cooling oil is injected into the space from the injection port, it is not necessary to connect the injection port and the direction changing part of the protrusion with piping, and when replacing the tool holder, only the tool holder needs to be removed from the tool post. The tool holder can be easily replaced.

In the process of moving the cooling oil 7 injected into the space from the inlet 12 to the outlet 13 via the direction changing unit 11, the injection direction of the cooling oil 7 is from the diameter direction of the tool holder 5 to the main body of the tool 6. The direction is changed so as to be parallel to the center line of the tool 6 toward the gap between the 17 and the internal hole 23.

Therefore, the cooling oil 7 taken into the gap between the main body 17 and the internal hole 23 from the direction changing portion 11 reaches the machined portion by the work 2 and the blade portion 18, and both the work 2 and the blade portion 18 Cool well. The cooling oil 7 that has cooled both the work 2 and the blade portion 18 is shown after the cutting chips have been removed by a cooling oil recovery path (not shown) and a filter provided in the cooling oil recovery path. Returned to a source that has not.

In the processing / cooling device according to the second aspect for carrying out the invention shown in FIG. 2, a cover 25 covering the opening on the outer peripheral surface side of the protrusion 8 in the groove-shaped direction changing portion 11 is provided on the protrusion 8. The cooling oil 7 that has entered the direction changing unit 11 is prevented from scattering.

In the processing cooling device according to the third embodiment for carrying out the invention shown in FIG. 3, a straightening pipe 26 such as a bent pipe joint called an elbow is provided at the injection port portion 10, and the straightening pipe 26 and the inlet 12 are provided. The space distance between the two is reduced so that the cooling oil 7 injected into the space from the straightening pipe 26 can be easily taken into the inlet 12. If the injection direction of the cooling oil 7 is corrected so that the cooling oil 7 injected by the straightening pipe 26 is parallel to the front surface of the tool post 4 facing the work 2, the inlet 12 is on the side of the tool post 4. It can be installed at a close position, the path of the direction changing unit 11 becomes long, and the injection direction of the cooling oil 7 injected from the outlet 13 becomes stable.

In the machining cooling device according to the fourth embodiment for carrying out the invention shown in FIG. 4, the direction changing portion 11 provided in the tool holder 5 has a hole shape. That is, the direction changing unit 11 is the center line of the tool 6 from the front surface facing the work 2 of the tool holder 5 on the side of the outlet 13 and the vertical hole dented inside in the radial direction from the outer peripheral surface of the tool holder 5 on the side of the inlet 12. The cooling oil 7 is provided with a horizontal hole extending in a direction parallel to the vertical hole and connected to the vertical hole, and the cooling oil 7 injected from the injection port portion 10 or the straightening pipe 26 to the inlet 12 via the space on the front surface side of the tool post 4. The cooling oil 7 is guided to the outlet 13 from the direction changing unit 11 without escaping to the outside, and the injection direction of the cooling oil 7 from the outlet 13 via the space between the work 2 and the tool holder 5 is stabilized. In FIG. 4, the orthodontic tube 26 is removed and applicable.

The machining cooling device according to the fifth embodiment shown in FIG. 5 is provided with a receiving wall 27 around the inlet 12 of the tool holder 5 so as to project outward in the radial direction of the tool holder 5 and receives the receiving wall 27. The wall 27 is configured to guide the cooling oil 7 injected from the injection port portion 10 to the inlet 12 of the direction changing portion 11 in the space on the front side of the tool post 4. The receiving wall 27 uses one of the divided pipes in which the pipe is divided into two along the center line extending in the vertical direction of the pipe, and the upper end of the divided pipe is projected toward the injection port portion 10. It has a hood-like structure with. Although not shown in FIG. 5, a ball joint is formed in which the end portion of the receiving wall 27 has a spherical shape and is slidably supported in a receiving recess provided around the inlet 12 of the tool holder 5. , The inclination of the receiving wall 27 may be adjustable.

The machining cooling device according to the sixth embodiment for carrying out the invention shown in FIG. 6 has a structure in which a taper drill is installed on the tool post 4 as a tool 6. That is, since the outer shape of the mounting portion 19 of the tool 6 has a tapered shape that gradually narrows from the side of the work 2 toward the rear, the tool accommodating hole 22 of the tool holder 5 has a tapered shape that matches the tapered shape. It has become. As a result, the mounting portion 19 of the tool 6 is inscribed and fixed in the tool accommodating hole 22 as it is accommodated in the tool accommodating hole 22 from the front side of the tool holder 5.

Since the outlet 13 of the direction changing portion 11 is provided on the front surface of the protrusion 8, the outlet 13 can be arranged near the tool 6 supported by the tool holder 5, and the outlet 13 is the tool holder 5. By being placed close to the supported tool 6, the cooling oil 7 is ejected in parallel from the outlet 13 along and in contact with the outer surface of the tool 6.

Therefore, when the spiral blade portion 18 formed from the tip of the main body portion 17 of the tool 6 to the rear of the main body portion 17 processes the internal hole 28 having a barrel shape in the work 2, the tool 6 processes the work 2. Even if it progresses to the back of the work 2, most of the cooling oil 7 ejected from the outlet 13 does not bounce off the front surface facing the injection port portion 10 of the work 2, and the internal hole 23 of the work 2 and the tool 6 The machined portion formed by the work 2 located at the back of the work 2 and the tip of the blade 18 of the tool 6 is reached through the gap between the workpieces 2, and the machined portion formed by the work 2 and the tool 6 is satisfactorily cooled by the cooling oil 7. To. In FIG. 6, the orthodontic tube 26 is removed and applicable.

The machining cooling device according to the seventh embodiment shown in FIG. 7 uses a tool holder 5 called a straight arbor for installing the drill chuck 31 on the tool post 4, and the protrusion of the tool holder 5 is used. An outlet 13 is provided at the center of the tip tapered portion 32 protruding from the portion 8 toward the work 2, and is ejected from the injection port portion 10 or the straightening pipe 26 to the inlet 12 via the space on the front side of the tool post 4. The cooling oil 7 is guided from the direction changing unit 11 to the outlet 13 without escaping to the outside, and is called a drill supported by the claw 34 and the claw 34 of the drill chuck 31 from the outlet 13 through the core hole 33 of the drill chuck 31. It reaches the machined portion by the work 2 and the blade portion 18 through the gap between the work 2 and the blade portion 18 to cool both the work 2 and the blade portion 18. In FIG. 7, the straightening tube 26 may be removed, or the drill chuck 31 may be replaced with a collet chuck, which is similarly applicable. Further, in FIG. 7, it is applicable even if the receiving wall 27 of FIG. 5 is provided instead of the correction tube 26.

The tool holder 5 according to the eighth embodiment for carrying out the invention shown in FIGS. 8 to 11 includes three direction changing units 11. These three direction changing portions 11 separate the cooling oil 7 taken into the inlet 12 which is opened at the outer peripheral surface of the protrusion 8 of the tool holder 5 in the circumferential direction from each other in the circumferential direction to the front surface of the protrusion 8. The structure is independent of each other so as to be discharged from the opened outlet 13. Inside each outlet 13, a rectifying member 35 that concentrates the flow of the cooling oil 7 injected into the space from the outlet 13 in a predetermined direction is provided.

A chamfered portion 36 is formed in an annular shape so as to go around the outer peripheral surface at a portion where the outer peripheral surface and the front surface of the protrusion 8 intersect. The chamfered portion 36 has a slope that gradually becomes a downward slope from the rear side to the front side (see FIG. 10).

As shown in FIGS. 8 and 10, the protrusion 8 is provided with a set screw 37 for fixing the tool 6 (see FIG. 6) to the tool holder 5 so as not to interfere with the direction changing portion 11. Specifically, as shown in FIG. 8, when the direction changing unit 11 is located on the upper side and the tool holder 5 is viewed from the front side, the set screw 37 passes through the center of the tool holder 5 and extends in the left-right direction. Two left and right positions where one straight line intersects the outer peripheral surface of the protrusion 8 and one position where one straight line extending in the vertical direction through the center of the tool holder 5 intersects at the lower part of the outer peripheral surface of the protrusion 8. It is provided in a total of 3 places. Further, as shown in FIG. 10, the set screw 37 is individually attached to the screw hole 38 penetrating the outer peripheral surface of the protrusion 8 and the tool accommodating hole 22.

Further, as shown in FIGS. 8 and 11, four mounting flat portions 39 are formed on the outer peripheral surface of the mounting portion 21 of the tool holder 5. As shown in FIG. 11, two of the four mounting flat portions 39 are parallel to each other on the center line L1 with the center of the tool holder 5 in between, and the other two mounting flat portions 39 are center lines. On the center line L2 orthogonal to L1, they are parallel to each other with the center of the tool holder 5 in between.

By providing four mounting flat surfaces 39, the tool holder 5 can be used for the tool post 4 of a processing machine manufactured by various manufacturing companies. Specifically, the positional relationship between the set screw 40 for fixing the tool holder 5 to the tool post 4 and the injection port portion 10 varies depending on the manufacturing company of the processing machine.

In developing the tool holder 5, when the position where the set screw 40 was provided was investigated for the tool post 4 manufactured by various manufacturing companies, the injection port portion 10 was inserted into the holder accommodating hole 16 as shown in FIG. When the tool post 4 is placed so as to be located higher, the set screw 40 is on the upper surface like the tool post 4A or on the right side like the tool post 4B or on the lower surface like the tool post 4C or on the tool post 4D. It was provided on the left side as shown. Based on the results of this investigation, as shown in FIG. 11, four mounting flat portions 39 are provided on the mounting portion 21 of the tool holder 5. When the tool holder 5 is viewed from the front, the upper mounting plane portion 39 of the four mounting plane portions 39 is represented by 39A, the right mounting plane portion 39 is represented by 39B, and the left mounting plane portion 39 is represented by 39B. It is expressed as 39C, and the lower mounting plane portion 39 is expressed as 39D to distinguish each of the four mounting plane portions 39.

In FIG. 12, in the tool post 4A, a set screw 40 for fixing the tool holder 5 to the tool post 4A is provided on the upper surface extending rearward from the upper edge of the front surface provided with the injection port portion 10, and in the tool post 4B, the tool post 4B is provided. A set screw 40 for fixing the tool holder 5 is provided on the right side surface extending rearward from the right edge of the front surface provided with the injection port portion 10, and in the tool post 4C, a set screw 40 for fixing the tool holder 5 to the tool post 4C is provided. Is provided on the lower surface extending rearward from the lower edge of the front surface where the injection port portion 10 is provided, and in the tool post 4D, a set screw 40 for fixing the tool holder 5 to the tool post 4D is provided on the front surface where the injection port portion 10 is provided. The case where it is provided on the left side surface extending behind the left edge is illustrated.

The combination of the tool post 4A to 4D and the tool holder 5 according to the ninth embodiment for carrying out the invention shown in FIG. 12 will be described. In FIG. 12, when the tool holder 5 is attached to the tool post 4A, the tool holder 5 is circular in plan view so that the inlet 12 of the tool holder 5 is located directly below the injection port 10 of the tool post 4A. The mounting portion 21 having four mounting flat portions 39 (39A, 39B, 39C, 39D in FIG. 11) on the outer peripheral surface is shown after being inserted into the holder accommodating hole 16 having a circular view in plan view of the tool post 4A. The set screw 40 advances toward the holder accommodating hole 16 while being guided by the female screw to which the set screw 40 is mounted by an artificial operation with a tightening tool such as a screwdriver, and the tip of the set screw 40 is the tool holder 5. The tool holder 5 is fixed to the tool post 4A by abutting on the upper mounting surface portion 39A.

Further, in FIG. 12, when the tool holder 5 is attached to the tool post 4B, the tool holder 5 is circular in a plan view so that the inlet 12 of the tool holder 5 is located directly below the injection port 10 of the tool post 4B. After the mounting portion 21 having four mounting flat portions 39 (39A, 39B, 39C, 39D in FIG. 11) on the outer peripheral surface is inserted into the holder accommodating hole 16 which is circular in plan view of the tool post 4B, the figure is shown. The set screw 40 advances toward the holder accommodating hole 16 while being guided by the female screw to which the set screw 40 is mounted by an artificial operation with a tightening tool such as a screwdriver, and the tip of the set screw 40 advances to the side of the holder accommodating hole 16. The tool holder 5 is fixed to the tool post 4B by abutting on the mounting flat portion 39B on the right side of the tool holder 5.

Further, in FIG. 12, when the tool holder 5 is attached to the tool post 4C, the tool holder 5 is circular in a plan view so that the inlet 12 of the tool holder 5 is located directly below the injection port 10 of the tool post 4. After the mounting portion 21 having the four mounting flat portions 39 (39A, 39B, 39C, 39D in FIG. 11) on the outer peripheral surface is inserted into the holder accommodating hole 16 having a circular view in plan view of the tool post 4, the figure is shown. The set screw 40 advances toward the holder accommodating hole 16 while being guided by the female screw to which the set screw 40 is mounted by an artificial operation with a tightening tool such as a screwdriver, and the tip of the set screw 40 advances to the side of the holder accommodating hole 16. The tool holder 5 is fixed to the tool post 4 by abutting on the mounting flat portion 39 on the right side of the above, that is, the mounting flat portion 39C in FIG.

Further, in FIG. 12, when the tool holder 5 is attached to the tool post 4D, the tool holder 5 is circular in plan view so that the inlet 12 of the tool holder 5 is located directly below the injection port 10 of the tool post 4. After the mounting portion 21 having the four mounting flat portions 39 (39A, 39B, 39C, 39D in FIG. 11) on the outer peripheral surface is inserted into the holder accommodating hole 16 having a circular view in plan view of the tool post 4, the figure is shown. The set screw 40 advances toward the holder accommodating hole 16 while being guided by the female screw to which the set screw 40 is mounted by an artificial operation with a tightening tool such as a screwdriver, and the tip of the set screw 40 advances to the side of the holder accommodating hole 16. The tool holder 5 is fixed to the tool post 4 by abutting on the mounting flat portion 39 on the left side of the above, that is, the mounting flat portion 39D in FIG.

In developing the tool holder 5 according to the tenth aspect for carrying out the invention shown in FIG. 13, the result of investigating the position where the injection port portion 10 is provided in the tool post 4 manufactured by various manufacturing companies will be described. To do. In FIG. 13, all the injection port portions 10 investigated extend in the left-right direction through the center line L1 and the center P1 extending in the vertical direction through the center P1 of the protrusion 8 of the tool holder 5, as shown by the virtual line. It can be seen that the angle θ1 from the center line L1 to the center line L2 is concentrated in the range of two straight lines L3 and L4 having 30 to 45 degrees in the upper part between the center line L2. It was. Based on the results of this investigation, the entrance 12 and the exit of the three direction changing units 11 at three locations where the center line L1 and the two straight lines L3 and L4 intersect one circumference L5 centered on the center P1. Since the

tools

13 and 13 are provided separately, the tool holder 5 can be used for the tool post 4 of a processing machine manufactured by various manufacturing companies. The most suitable angle was θ1 = 35 degrees. Further, the inlet 12 and the exit 13 in the direction changing unit 11 may be individually provided at two places where the straight lines L3, L4 and the circumference L5 intersect, and the straight lines L3, L4 and the circumference L5 intersect. The inlet 12 and the outlet 13 in one direction changing unit 11 may be individually provided at either one of the locations.

In developing the tool holder 5 according to the eleventh embodiment for carrying out the invention, FIG. 14 was used to verify the angle between the vertical hole on the inlet 12 side and the horizontal hole on the outlet 13 side of the direction changing unit 11. The results will be described. In FIG. 14, the clearance angle θ2 between the center line L6 extending in the vertical direction of the vertical hole on the side of the inlet 12 and the center line L7 extending in the lateral direction of the tool accommodating hole 22 is 45 to 55 degrees, which is an allowable range of 50 degrees. Optimal, the clearance angle θ3 between the center line L8 extending in the left-right direction of the lateral hole on the side of the outlet 13 and the center line L7 extending in the lateral direction of the tool accommodating hole 22 is 5 to 10 degrees within the allowable range of 0 to 15 degrees. It was confirmed that the degree was optimum and the cooling oil 7 was ejected in a bundle without being scattered from the outlet 13. Further, when the bottom portion 41 at which the vertical hole on the inlet 12 side and the horizontal hole on the outlet 13 side intersect has an arc shape that is recessed downward, θ3 is 0 degrees, that is, the cooling oil 7 is discharged from the outlet 13. It was confirmed that it was derived in parallel with the center line L7.

FIG. 15 will be described as a result of verifying the relationship between the three direction changing portions 11, the tool accommodating holes 22, and the set screw 37 in the tool holder 5 according to the morphology 12 for carrying out the invention. As shown in FIG. A of FIG. 15, since the diameter of the tool accommodating hole 22 is large, even if the inlet 12 and the outlet 13 of the direction changing portion 11 are individually provided, if there is no interference with the set screw 37. , The cooling oil 7 is injected in a bundle from the outlet 13 without being scattered, which is the best structure.

However, as shown in FIG. 15B, since the diameter of the tool accommodating hole 22 is small, three inlets 12 and three outlets 13 of the direction changing unit 11 are individually provided without interference with the set screw 37. However, when the adjacent portions of the three outlets 13 were connected to each other, the cooling oil 7 was scatteredly ejected from the three outlets 13 connected to each other, and it was confirmed that the injection of the cooling oil 7 was not good.

Therefore, since the diameter of the tool accommodating hole 22 is small, even if the inlet 12 and the outlet 13 of the direction changing portion 11 are individually provided without interference with the set screw 37, the adjacent portions of the three outlets 13 are connected to each other. In this case, as shown in FIG. C of FIG. 15, by consolidating the outlets 13 into one with three inlets 12 of the direction changing unit 11, interference with the set screw 37 can be avoided and 1 The cooling oil 7 is ejected as a bundle from one outlet 13 without being scattered, which is the best structure.

That is, when the diameter of the tool accommodating hole 22 is small and it is difficult to provide three outlets 13 without interference with the set screw 37, the tool accommodating holes 22 can be integrated into one outlet 13 as shown in FIG. The cooling oil 7 is ejected as a bundle without being scattered.

The direction changing portion 11 in the tool holder 5 according to the thirteenth aspect for carrying out the invention shown in FIGS. A to C of FIG. It is constructed as a flat slope with a gradual downward slope toward the side of. With this configuration, the structure of the direction changing unit 11 is simple. The portion between the inlet 12 and the outlet 13 of the direction changing portion 11 opens to the outer peripheral surface and the front surface of the protrusion 8. As shown in FIG. 16A, the direction changing portion 11 is in a state of being cut out in a straight line in the left-right direction, and has a shape that is curved upward and protrudes like the chamfered portion 36 shown in FIG. is not. Therefore, when the cooling oil 7 hits a flat slope, it is possible to prevent the injection direction of the cooling oil 7 from being divided into the left and right directions.
Further, when the tool holder 5 is viewed from the side surface as shown in FIG. 16B, the angle θ4 formed by the flat slope of the direction changing portion 11 and the center line L7 extending in the lateral direction of the tool accommodating hole 22 is not particularly limited. However, it can be set to the angle of θ3 in FIG. By being configured at this angle, more cooling oil can be ejected from the outlet in parallel along and in contact with the outer surface of the tool.

Further, the tool holder 5 shown in FIGS. D to F of FIG. 16 has a configuration in which three flat slopes, which are direction changing portions 11, are provided adjacent to the protrusions 8 in the left-right direction. When a plurality of flat slopes of the direction changing unit 11 are provided, the respective angles of the angle θ4 formed by the flat slope of the direction changing unit 11 and the center line L7 extending in the lateral direction of the tool accommodating hole 22 are shown in FIG. It can be set to an angle of θ3 of 14.
Further, as shown in FIG. 16D, when the direction changing unit 11 is viewed from the front side, the angle formed by the two flat slopes of the adjacent direction changing units 11 (the angle on the side of the center P1) θ5 and The angle of θ6 is preferably 135 degrees to 150 degrees. If it is configured at this angle, as shown in FIG. 13, the tool holder 5 is preferable because it can correspond to the tool post 4 of the processing machine manufactured by various manufacturing companies. The most preferable angle is that the angles of θ5 and θ6 are 145 degrees.

The angles of θ5 and θ6 may be the same or different. Further, the direction changing unit 11 may be provided with 2, 4, or 5 or more. When a plurality of direction changing units 11 are provided, a plurality of direction changing units 11 may be provided individually, or a plurality of direction changing units 11 may be provided adjacent to each other.

The direction changing portion 11 in the tool holder 5 according to the fourth embodiment for carrying out the invention shown in FIGS. A to C of FIG. 17 has an upper portion of the protrusion 8 above the tool accommodating hole 22 from the side of the inlet 12 to the outlet 13. It is configured as a flat slope that gradually becomes a downward slope toward the side of, and is composed of a steep slope on the entrance 12 side and a gentle slope on the exit 13 side. The steep slope is a flat slope. The gentle slope is a flat slope. As shown in FIG. 17A, the steep slope and the gentle slope are in a state of being cut out in a straight line in the left-right direction, and have a shape that is curved upward and protrudes like the chamfered portion 36 shown in FIG. is not. Therefore, when the cooling oil 7 hits a steep slope and a gentle slope, it is possible to prevent the injection direction of the cooling oil 7 from being divided into the left and right directions.

When the tool holder 5 is viewed from the side surface as shown in FIG. 17B, the angle θ7 formed by the steep slope on the entrance 12 side and the center line L7 extending in the lateral direction of the tool accommodating hole 22 is not particularly limited, but is not particularly limited. It can be set to an angle of θ2. The steep slope on the side of the entrance 12 is configured as a slope that gradually becomes a downward slope from the side of the entrance 12 to the side of the exit 13.

When the tool holder 5 is viewed from the side surface as shown in FIG. 17B, the angle θ8 formed by the gentle slope on the exit 13 side and the center line L7 extending in the lateral direction of the tool accommodating hole 22 is not particularly limited, but is shown in FIG. It can be set to an angle of θ3 of 14. At this angle, more cooling oil can be ejected from the outlet in parallel along and in contact with the outer surface of the tool. The gentle slope on the side of the outlet 13 is configured as a slope that gradually becomes a downward slope from the side of the entrance 12 toward the side of the exit 13. The number of direction changing units 11 is not limited to one, and may be two, three, four, or five or more.

Further, although not shown, a direction changing portion 11 composed of a steep slope on the entrance 12 side and a gentle slope on the exit 13 side is adjacent to the protrusion 8 in the left-right direction as in FIGS. 16D to 16F. May be provided in plurality.
When a plurality of steep slopes and gentle slopes of the direction changing unit 11 are provided, the respective angles of the angle θ7 formed by the steep slope of the direction changing unit 11 and the center line L7 extending in the lateral direction of the tool accommodating hole 22 are shown in FIG. It can be set to an angle of θ2 of 14. Further, the respective angles θ8 formed by the gentle slope on the exit 13 side of the direction changing unit 11 and the center line L7 extending in the lateral direction of the tool accommodating hole 22 can be set to the angle θ3 in FIG. it can.
When the direction changing unit 11 is viewed from the front side, the angle formed by the gentle slopes on the sides of the two outlets 13 of the adjacent direction changing units 11 (the angle on the center P1 side) is 135 degrees to 150 degrees. It is preferable to have. If it is configured at this angle, as shown in FIG. 13, the tool holder 5 is preferable because it can correspond to the tool post 4 of the processing machine manufactured by various manufacturing companies. The most preferable angle of the angle is 145 degrees.

Even if the angle formed by the gentle slopes on the sides of the two outlets 13 of the adjacent direction changing units 11 (the angle on the side of the center P1) when the direction changing unit 11 is viewed from the front side is the same angle. , May be different angles. When a plurality of direction changing units 11 are provided, a plurality of direction changing units 11 may be provided individually, or a plurality of direction changing units 11 may be provided adjacent to each other.

Although the structure in which the tool post 4 and the tool holder 5 are separate members is illustrated in the embodiment for carrying out each of the inventions, the tool post 4 and the tool holder 5 may be integrated. That is, the protrusion 8 may be provided on the front surface of the tool post 4, and the tool 6 may be supported on the protrusion 8 and the direction changing portion 11 may be provided. Further, the tool 6 may be provided with a protrusion 8 having a direction changing portion 11. At that time, as shown in FIGS. 36 to 51, the protrusion 8 of the tool holder 5 from which the mounting portion 21 has been removed may be detachably provided on the tool 6, and the protrusion 8 is integrated with the tool 6. Either of the cases where it is provided as a structure may be used. The direction changing portion 11 in the protruding portion 8 of the tool holder 5 from which the mounting portion 21 has been removed can be applied with embodiments 1 to 14 for carrying out the invention.

Work installation part 1
Work 2
Tool installation unit 3
Tool stand 4
Tool holder 5
Tool 6
Cooling oil 7
Protrusion 8
Space 9
Injection port 10
Direction change unit 11
Entrance 12
Exit 13
Claw 15
Holder accommodating hole 16
Body 17
Blade 18
Mounting part 19
Mounting part 21
Tool accommodating hole 22
Internal hole 23
Boring hole 24
Cover 25
Orthodontic tube 26
Receptive wall 27
Internal hole 28
Drill chuck 31
Tip taper portion 32
Core hole 33
Rectifying member 35
Chamfering part 36
Set screw 37
Mounting plane 39
Set screw 40
Bottom 41

Claims

A machining cooling device that cools a portion of a work installed in a work installation section with a tool supported by a tool post in the tool setting section with cooling oil. The machining cooling device has a protrusion and is described above. The protrusion is provided with a direction changing portion so as to introduce the cooling oil injected into the space from the injection port from the outer peripheral surface of the protrusion and to lead it out from the front surface of the protrusion toward the processed portion. A processing cooling device characterized in that both the cooling oil introduction part and the outlet part of the direction changing part are configured as openings.
A tool holder that supports a tool on the tool post in the tool installation section with respect to the work installed in the work installation section, and is a protrusion of the tool holder that projects from the front surface of the tool post to the work side around the tool. The cooling oil injected from the injection port on the front side of the tool post facing the work is introduced from the outer peripheral surface of the protrusion and directed from the front surface of the protrusion toward the processed portion. A tool holder that is provided so as to be led out by means of an opening, and both the introduction part and the out-drawing part of the cooling oil in the direction changing part are configured as openings.
A tool post that supports a tool in the tool installation section with respect to the work installed in the work installation section, and an injection port portion on the front surface of the tool post on the side facing the work allows cooling oil to be applied around the tool. It is provided so as to inject into the space while facing the outer peripheral surface of the protrusion protruding from the front surface toward the work side, and the direction changing portion is provided on the protrusion so as to inject the cooling oil sprayed from the injection port portion of the protrusion. It is characterized in that it is introduced from the outer peripheral surface and is provided so as to be led out from the front surface of the protrusion toward the processed portion, and both the introduction portion and the outlet portion of the cooling oil in this direction changing portion are configured as openings. Tool stand.
At the upper part between the center line extending in the vertical direction through the center of the protrusion and the center line extending in the horizontal direction through the center, the center line extending in the vertical direction passes through the center in the horizontal direction. A center line extending in the vertical direction and the circle provided at a point where a straight line having an angle θ1 toward the extending center line of 30 to 45 degrees intersects with one circumference centered on the center. The processing cooling device according to claim 1, wherein the processing cooling device is provided at a position intersecting the circumference.
At the upper part between the center line extending in the vertical direction through the center of the protrusion and the center line extending in the horizontal direction through the center, the center line extending in the vertical direction passes through the center in the horizontal direction. A straight line having an angle θ1 toward the extending center line of 30 to 45 degrees is provided at a point where a straight line intersects with one circumference centered on the center, and the center line and the circle extending in the vertical direction are provided. The tool holder according to claim 2, wherein the tool holder is provided at a position intersecting the circumference.
At the upper part between the center line extending in the vertical direction through the center of the protrusion and the center line extending in the horizontal direction through the center, the center line extending in the vertical direction passes through the center in the horizontal direction. A straight line having an angle θ1 toward the extending center line of 30 to 45 degrees is provided at a point where a straight line intersects with one circumference centered on the center, and the center line and the circle extending in the vertical direction are provided. The tool post according to claim 3, wherein the tool post is provided at a position intersecting the circumference.
The processing cooling device according to claim 1, wherein a cooling method for cooling a portion of a work installed in a work installation portion to be machined with a tool supported by a tool post in the tool installation portion with cooling oil. A cooling method, characterized in that cooling is performed using the tool holder according to item 2 or the tool post according to claim 3.
The processing cooling device according to claim 1, wherein the sandwiching angle between the center line of the hole on the side of the introduction portion and the center line of the tool accommodating hole is 45 degrees to 55 degrees.
The tool holder according to claim 2, wherein the sandwiching angle between the center line of the hole on the side of the introduction portion and the center line of the tool accommodating hole is 45 degrees to 55 degrees.
The tool post according to claim 3, wherein the angle between the center line of the hole on the side of the introduction portion and the center line of the tool accommodating hole is 45 to 55 degrees.
The processing cooling device according to claim 1, wherein the sandwiching angle between the center line of the hole on the side of the lead-out portion and the center line of the tool accommodating hole is 0 to 15 degrees.
The tool holder according to claim 2, wherein the sandwiching angle between the center line of the hole on the side of the lead-out portion and the center line of the tool accommodating hole is 0 to 15 degrees.
The tool post according to claim 3, wherein the angle between the center line of the hole on the side of the lead-out portion and the center line of the tool accommodating hole is 0 to 15 degrees.
A machining cooling device that cools a portion of a work installed in a work installation section with a tool supported by a tool post in the tool setting section with cooling oil. The machining cooling device has a protrusion and is described above. The protrusion is provided with a direction changing portion so as to introduce the cooling oil injected into the space from the injection port from the outer peripheral surface of the protrusion and to lead it out from the front surface of the protrusion toward the processed portion. The direction changing unit is a processing cooling device characterized in that it is configured on a flat slope that gradually becomes a downward slope from the side of the cooling oil introduction unit to the side of the outlet unit.
A tool holder that supports a tool on the tool post in the tool installation section with respect to the work installed in the work installation section, and is a protrusion of the tool holder that projects from the front surface of the tool post to the work side around the tool. The cooling oil injected from the injection port on the front side of the tool post facing the work is introduced from the outer peripheral surface of the protrusion and directed from the front surface of the protrusion toward the machined portion. The tool holder is provided so as to be led out by the tool holder, and is characterized by being formed on a flat slope in which the slope gradually decreases from the side of the cooling oil introduction portion to the side of the outlet portion in this direction changing portion.
A tool post that supports a tool in the tool installation section with respect to the work installed in the work installation section, and an injection port portion on the front surface of the tool post on the side facing the work allows cooling oil to be applied around the tool. It is provided so as to inject into the space while facing the outer peripheral surface of the protrusion protruding from the front surface toward the work side, and the direction changing portion is provided on the protrusion so as to inject the cooling oil injected from the injection port portion of the protrusion. It is provided so as to be introduced from the outer peripheral surface and led out from the front surface of the protrusion toward the processed portion, and gradually descends from the side of the cooling oil introduction portion to the side of the outlet portion in this direction changing portion. A tool post characterized by being constructed on a flat slope.
The processing cooling device according to claim 14, wherein the angle formed by the flat slope and the center line of the tool accommodating hole is 0 to 15 degrees.
The tool holder according to claim 15, wherein the angle formed by the flat slope and the center line of the tool accommodating hole is 0 to 15 degrees.
The tool post according to claim 16, wherein the angle formed by the flat slope and the center line of the tool accommodating hole is 0 to 15 degrees.