CN113905848A - Processing cooling device - Google Patents
Processing cooling device Download PDFInfo
- Publication number
- CN113905848A CN113905848A CN202080038419.XA CN202080038419A CN113905848A CN 113905848 A CN113905848 A CN 113905848A CN 202080038419 A CN202080038419 A CN 202080038419A CN 113905848 A CN113905848 A CN 113905848A
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- China
- Prior art keywords
- tool
- workpiece
- center line
- tool holder
- cooling oil
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/04—Tool holders for a single cutting tool
- B23B29/12—Special arrangements on tool holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/12—Adapters for drills or chucks; Tapered sleeves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The invention provides a machining cooling device which can well cool even if the machining of a tool is carried out to the deep position of a workpiece. Since the outlet (13) of the direction change portion (11) is provided at the front surface of the protrusion portion (8), it is possible to arrange the outlet (13) near the tool (6) supported by the tool holder (5), and since the outlet (13) is arranged in close proximity in an abutting manner with the tool (6) supported by the tool holder (5), the cooling oil (7) is ejected in parallel from the outlet (13) in close proximity in a contacting manner along the outer surface of the tool (6). Therefore, even if the machining of the workpiece (2) by the tool (6) proceeds to the depth of the workpiece (2), most of the cooling oil (7) ejected from the outlet (13) does not bounce at the front surface of the workpiece (2) facing the ejection port portion (10), but reaches the machined portion formed by the workpiece (2) and the tip of the blade portion (18) of the tool (6) located at the depth of the workpiece (2) via the gap between the internal hole (23) of the workpiece (2) and the tool (6), and the machined portion formed by the workpiece (2) and the tool (6) is well cooled by the cooling oil (7).
Description
Technical Field
The invention relates to a processing cooling device and a cooling method.
Background
As shown in fig. 18, the machining cooling device disclosed in patent document 1 is configured such that a spray nozzle 73 is provided at a front surface of a tool holder 72 provided at a tool rest 71, the spray nozzle 73 cannot be arranged near a tool 74 supported by the tool holder 72, the spray nozzle 73 is arranged away from the tool 74 to the outside, and the spray nozzle 73 sprays cooling oil 74 obliquely toward a cutting edge of the tool 74 from a position away from the tool 74 to the outside. Therefore, as shown in fig. 19, when the machining of the workpiece 76 by the tool 74 proceeds to the depth of the workpiece 76, most of the cooling oil 75 ejected from the ejection nozzle 73 bounces at the front surface of the workpiece 76 facing the ejection nozzle 73, and the amount of cooling oil reaching the machined portion formed by the workpiece 76 and the cutting edge of the tool 74 located at the depth of the workpiece 76 decreases, which has a disadvantage that the cooling of the workpiece 76 and the cutting edge of the tool 74 becomes worse.
Documents of the prior art
Patent document
Patent document 1: japanese registered Utility model No. 3143544
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made in view of the above-described background art, and an object of the present invention is to provide a machining cooling device capable of cooling a workpiece well even when machining by a tool is performed deep into the workpiece.
Means for solving the problems
The present invention is a machining cooling device for cooling a portion where a workpiece disposed at a workpiece disposing portion is machined by a tool supported by a tool rest in the tool disposing portion with cooling oil, characterized in that the machining cooling device has a projection portion provided with a direction changing portion for introducing the cooling oil injected into a space from an injection port portion from an outer peripheral surface of the projection portion and guiding the cooling oil out from a front surface of the projection portion toward the machining portion, and both of an introducing portion and a guiding portion of the cooling oil in the direction changing portion are configured to be open. In other words, the present invention is characterized in that the cooling oil is injected into the space from an injection port portion provided at the front surface of the tool holder, the flow direction of the cooling oil injected into the space is switched by a direction switching portion provided at a protrusion portion protruding from the tool holder to the workpiece side, and the cooling oil after the flow direction switching is led out to the processing portion formed by the workpiece and the tool from an opening provided at the protrusion portion of the tool holder as a lead-out portion of the direction switching portion.
ADVANTAGEOUS EFFECTS OF INVENTION
In the present invention, since the outlet as the lead-out portion of the direction change portion is provided at the front surface of the projecting portion projecting from the tool rest of the tool holder to the workpiece side, the outlet can be arranged in the vicinity of the tool, and since the outlet is arranged in the vicinity of the tool in an abutting manner, the cooling oil can be ejected in parallel from the outlet in the vicinity of the outer surface of the tool in a contacting manner. Therefore, even if the machining of the workpiece by the tool progresses to the depth of the workpiece, most of the cooling oil ejected from the outlet does not bounce at the front surface of the workpiece facing the ejection port portion, but reaches the machined portion formed by the tip of the blade portion of the tool and the workpiece located at the depth of the workpiece via the gap between the internal hole machined at the workpiece and the tool, with the effect that the machined portion formed by the workpiece and the tool is well cooled by the cooling oil. Further, in the present invention, since the injection port portion injects the cooling oil to the space at the front surface of the side of the tool rest facing the workpiece, there is no need to connect the injection port portion and the direction changing portion of the projection portion with a pipe, and in the case of replacing the tool holder, it is only necessary to detach the tool holder from the tool rest, and the tool holder can be easily replaced. In the present invention, the direction converting portion is provided in an upper portion between a center line extending in an up-down direction through a center of the protrusion portion and a center line extending in a left-right direction through the center, a straight line having an angle θ 1 of 30 to 45 degrees from the center line extending in the up-down direction toward the center line extending in the left-right direction through the center intersects with one circumference having the center as a center, and is provided at a portion where the center line extending in the up-down direction intersects with the circumference, so that the tool holder can correspond to a tool rest of a processing machine manufactured by various manufacturing companies. In the present invention, the angle formed by the center line of the hole on the side of the introduction portion and the center line of the tool accommodating hole is set to 45 to 55 degrees, so that the cooling oil 7 is injected in a bundle and does not scatter from the outlet 13. In the present invention, the angle formed by the center line of the hole on the lead-out portion side and the center line of the tool receiving hole is set to 0 to 15 degrees, so that the cooling oil 7 is injected in a bundle without scattering from the outlet 13. In the present invention, the direction changing portion is configured as a flat slope that gradually changes to a downward gradient as it goes from the inlet portion side to the outlet portion side of the cooling oil, and the structure is simple. In the present invention, the angle formed by the flat slope and the center line of the tool receiving hole is 0 to 15 degrees, so that the cooling oil can be further ejected from the outlet port in parallel close along the outer surface of the tool and in contact.
Drawings
Fig. 1 is a sectional view of a process cooling apparatus according to embodiment 1 of the present invention.
Fig. 2 is a sectional view of a process cooling apparatus according to embodiment 2 of the present invention.
Fig. 3 is a sectional view of a process cooling apparatus according to embodiment 3 of the present invention.
Fig. 4 is a sectional view of a process cooling apparatus according to embodiment 4 of the present invention.
Fig. 5 is a sectional view of a process cooling apparatus according to embodiment 5 of the present invention.
Fig. 6 is a sectional view of a process cooling apparatus according to embodiment 6 of the present invention.
Fig. 7 is a sectional view of a process cooling apparatus according to embodiment 7 of the present invention.
Fig. 8 is a perspective view of a tool holder according to embodiment 8 of the present invention.
Fig. 9 is a front view of a tool holder of embodiment 8 of the present invention.
Fig. 10 is a cross-sectional view taken along line 101-101 of fig. 9.
Fig. 11 is a rear view of a tool holder of embodiment 8 of the present invention.
Fig. 12 is a perspective view of a combination of a tool holder and a tool holder according to embodiment 9 of the present invention.
Fig. 13 is a schematic view showing the results of investigation of the position of the ejection port portion provided in the holder when developing the tool holder according to embodiment 10 of the present invention.
Fig. 14 is a schematic diagram showing the result of verifying the angle between the inlet-side vertical hole and the outlet-side horizontal hole of the direction change portion when developing the tool holder according to embodiment 11 of the present invention.
Fig. 15 is a schematic view showing the result of verifying the relationship among the three direction changing portions, the tool accommodating hole, and the fastening screw in the tool holder according to embodiment 12 of the present invention.
Fig. 16 shows a tool holder according to embodiment 13 of the present invention, in which fig. 16 (a) is a front view, fig. 16 (B) is a side view, fig. 16 (C) is a plan view, fig. 16 (D) is a front view, fig. 16 (E) is a side view, and fig. 16 (F) is a plan view.
Fig. 17 shows a tool holder according to embodiment 14 of the present invention, in which fig. 17 (a) is a front view, fig. 17 (B) is a side view, and fig. 17 (C) is a plan view.
Fig. 18 is a side view of a conventional process cooling device.
Fig. 19 is a side view of a case where the machining of the workpiece by the tool of the conventional machining cooling device proceeds deep into the workpiece.
Fig. 20 is a front view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention.
Fig. 21 is a rear view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention.
Fig. 22 is a left side view of the tool holder of fig. 15 (C) in embodiment 12 of the present invention.
Fig. 23 is a right side view of the tool holder of fig. 15 (C) in embodiment 12 of the present invention.
Fig. 24 is a plan view of the tool holder shown in fig. 15 (C) according to embodiment 12 of the present invention.
Fig. 25 is a bottom view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention.
Fig. 26 is a sectional view a-a in a front view of the tool holder of fig. 15 (C) of embodiment 12 of the present invention.
Fig. 27 is a perspective view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention.
Fig. 28 is a front view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention, in which the characteristic portions are indicated by solid lines and the other portions are indicated by broken lines.
Fig. 29 is a rear view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention, in which the characteristic portions are indicated by solid lines and the other portions are indicated by broken lines.
Fig. 30 is a left side view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention, in which the characteristic portions are indicated by solid lines and the other portions are indicated by broken lines.
Fig. 31 is a right side view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention, in which the characteristic portions are indicated by solid lines and the other portions are indicated by broken lines.
Fig. 32 is a plan view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention, in which the characteristic portions are indicated by solid lines and the other portions are indicated by broken lines.
Fig. 33 is a bottom view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention, in which the characteristic portions are indicated by solid lines and the other portions are indicated by broken lines.
Fig. 34 is a sectional view a-a in a front view, in which a characteristic portion of the tool holder of fig. 15 (C) of embodiment 12 of the present invention is indicated by a solid line and the other portion is indicated by a broken line.
Fig. 35 is a perspective view of the tool holder of fig. 15 (C) according to embodiment 12 of the present invention, in which the characteristic portions are indicated by solid lines and the other portions are indicated by broken lines.
Fig. 36 is a front view of a portion of the tool holder of fig. 15 (C) in embodiment 12 of the present invention, in which the protruding portion of the direction conversion portion is provided.
Fig. 37 is a rear view of a portion of the tool holder of fig. 15 (C) in embodiment 12 of the present invention, in which the projection of the direction conversion portion is provided.
Fig. 38 is a left side view of a portion of the tool holder of fig. 15 (C) in embodiment 12 of the present invention, in which the projection of the direction conversion portion is provided.
Fig. 39 is a right side view of a portion of the tool holder of fig. 15 (C) in embodiment 12 of the present invention, in which the protruding portion of the direction conversion portion is provided.
Fig. 40 is a plan view of a portion of the tool holder shown in fig. 15 (C) in embodiment 12 of the present invention, in which the projection of the direction changing portion is provided.
Fig. 41 is a bottom view of a portion of the tool holder in fig. 15 (C) in embodiment 12 of the present invention, in which the protruding portion of the direction conversion portion is provided.
Fig. 42 is a sectional view a-a in a front view of a portion of the tool holder of fig. 15 (C) in embodiment 12 of the present invention, the portion being provided with the projecting portion of the direction conversion portion.
Fig. 43 is a perspective view of a portion of the tool holder in fig. 15 (C) in embodiment 12 of the present invention, the portion being provided with the projection of the direction switch portion.
Fig. 44 is a front view of the tool holder of embodiment 12 of the present invention shown in fig. 15 (C) in which the characteristic portion of the portion provided with the projecting portion of the direction change portion is indicated by a solid line and the other portion is indicated by a broken line.
Fig. 45 is a rear view of the tool holder of embodiment 12 of the present invention shown in fig. 15 (C) in which the characteristic portion of the portion provided with the projecting portion of the direction change portion is indicated by a solid line and the other portion is indicated by a broken line.
Fig. 46 is a left side view of the tool holder of embodiment 12 of the present invention shown in fig. 15 (C) in which the characteristic portion of the portion provided with the projecting portion of the direction change portion is indicated by a solid line and the other portion is indicated by a broken line.
Fig. 47 is a right side view of the tool holder of embodiment 12 of the present invention shown in fig. 15 (C) in which the characteristic portion of the portion provided with the projecting portion of the direction change portion is indicated by a solid line and the other portion is indicated by a broken line.
Fig. 48 is a plan view of a portion of the tool holder in fig. 15 (C) according to embodiment 12 of the present invention, in which the projecting portion of the direction changing portion is provided, the portion having a characteristic portion indicated by a solid line and the other portion indicated by a broken line.
Fig. 49 is a bottom view of the tool holder of embodiment 12 of the present invention shown in fig. 15 (C) in which the characteristic portion of the portion provided with the projecting portion of the direction change portion is indicated by a solid line and the other portion is indicated by a broken line.
Fig. 50 is a sectional view a-a in a front view, in which a characteristic portion of a portion of the tool holder in fig. 15 (C) in which the projecting portion of the direction switching portion is provided is indicated by a solid line and the other portion is indicated by a broken line, according to embodiment 12 of the present invention.
Fig. 51 is a perspective view of a portion of the tool holder in fig. 15 (C) according to embodiment 12 of the present invention, in which the projecting portion of the direction changing portion is provided, the portion having a characteristic portion indicated by a solid line and the other portion indicated by a broken line.
Detailed Description
The machining cooling device according to embodiment 1 of the present invention shown in fig. 1 exemplifies boring machining by a turret lathe as a machining device, and is configured to: the cooling oil 7 is supplied from the tool setting portion 3 side to the portion where the workpiece 2 set at the workpiece setting portion 1 is machined by the tool 6, and the tool holder 5 set at the tool rest 4 of the tool setting portion 3 supports the tool 6.
Then, an ejection port portion 10 is provided at the front surface of the side of the tool rest 4 facing the workpiece 2, so that the cooling oil 7 is ejected toward the outer peripheral surface of the protrusion portion 8 protruding from the tool rest 4 of the tool holder 5 to the workpiece 2 side and to the space 9. The ejection port portion 10 may also be configured to have an ejection nozzle.
Further, a direction change portion 11 is provided at the projection portion 8 so that the cooling oil 7 sprayed from the spray port portion 10 to the space 9 is introduced from the outer peripheral surface of the projection portion 8 and is led out from the front surface of the projection portion 8 on the side facing the workpiece 2 toward the processed portion formed by the workpiece 2 and the tool 6.
In the direction change portion 11, both the inlet portion 12 of the cooling oil 7 on the outer peripheral surface of the projection portion 8 and the outlet portion 13 of the cooling oil 7 on the front surface of the projection portion 8 are configured to be open.
Hereinafter, the inlet 12 of the cooling oil 7 is referred to as an inlet 12, and the outlet 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 change portion 11 is provided at the front surface of the protrusion portion 8, it is possible to arrange the outlet 13 near the tool 6 supported by the tool holder 5, and since the outlet 13 is arranged in close proximity in an abutting manner with the tool 6 supported by the tool holder 5, the cooling oil 7 is ejected in parallel from the outlet 13 in close proximity in a contacting manner along the outer surface of the tool 6.
Therefore, even if the machining of the workpiece 2 by the tool 6 proceeds to the depth of the workpiece 2, most of the cooling oil 7 ejected from the outlet 13 does not bounce at the front surface of the workpiece 2 facing the ejection port portion 10, but reaches the machined portion formed by the workpiece 2 and the tip of the blade portion 18 of the tool 6 located deep in the workpiece 2 via the gap between the internal hole 23 of the workpiece 2 and the tool 6, and the machined portion formed by the workpiece 2 and the tool 6 is well cooled by the cooling oil 7.
In fig. 1, the portion between the entrance 12 and the exit 13 of the direction switch portion 11 is opened at the outer peripheral surface and the front surface of the projecting portion 8, and has an arc-shaped bottom portion whose depth from the outer peripheral surface of the projecting portion 8 to the inside becomes deeper as going from the entrance 12 on the tool holder 4 side to the exit 13 on the workpiece setting portion 1 side, so that the structure of the direction switch portion 11 is simple.
At the workpiece setting section 1, which is called a workpiece chuck of a turret lathe, the workpiece 2 is set to be captured from the outside by a plurality of claws 15 provided at the workpiece setting section 1. The workpiece 2 provided at the workpiece setting section 1 is rotationally driven in accordance with the rotational driving of the workpiece setting section 1 such that it revolves in one direction around a center line of the workpiece setting section 1 extending in the lateral direction as a rotational center. A tool 6 called a boring bar is mounted on one tool rest 4 of a tool setting section 3 of a turret called a turret lathe via a tool holder 5.
Specifically, inside the tool rest 4, a holder receiving hole 16 is formed laterally from a front surface of the tool rest 4 on a side facing the workpiece 2 toward a rear end side. The tool 6 includes a body portion 17, a blade portion 18, and a mounting portion 19 on the tool holder 5. The main body 17 is positioned on the side facing the workpiece 2 and has a horizontally long rod shape. The blade portion 18 is provided at a front end portion of the main body portion 17 on a side facing the workpiece 2. The mounting portion 19 is formed in a rod shape extending concentrically from the main body portion 17 toward the rear side.
The tool holder 5 includes a projecting portion 8, a mounting portion 21 on the tool holder 4, and a tool receiving hole 22. The protrusion 8 has an outer shape larger than that of the mounting portion 21. The mounting portion 21 has a shape smaller than the protruding portion 8. A tool receiving hole 22 is formed at a central portion of the tool holder 5 laterally from a front surface of a side facing the workpiece setting portion 1 toward the mounting portion 21 side. Then, the mounting portion 19 of the tool 6 is received and fixed in the tool receiving 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 protrude from the protruding portion 8 of the tool holder 5 to the side facing the workpiece 2.
In addition, fig. 1 illustrates such a manner: at the workpiece 2 disposed at the workpiece setting portion 1, an inner hole 23 is formed in advance in a barrel shape from a front surface of the workpiece 2 on a side facing the tool setting portion 3 toward the inside by a tool not shown attached to one tool rest not shown disposed at the tool setting portion 3, other than the tool 6.
Then, in a state where the workpiece 2 is driven to rotate by the workpiece setting 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 of the internal hole 23 of the workpiece 2 on the side facing the tool setting portion 3, the blade portion 18 machines a bore larger in diameter than the internal hole 23 by the movement in the radial direction outward with respect to the rotation of the workpiece 2 and the movement in the lateral direction extending toward the center line with respect to the rotation of the workpiece 2 in accordance with the machining operation of the tool rest 4 with respect to the tool setting portion 3. That is, when the workpiece is machined by the tool 6, the workpiece 2 may be rotationally driven, and the tool 6 may be moved in the radial direction outward with respect to the rotation of the workpiece 2 and in the lateral direction extending toward the center line with respect to the rotation of the workpiece 2 without being rotated, but it is also applicable if the tool is moved at least in the lateral direction extending toward the center line of the rotation of the workpiece 2.
The cooling oil pressurized to a predetermined pressure is supplied from a supply source, not shown, to the ejection port portion 10 via a supply path, not shown, provided inside the tool holder 4, and the supplied cooling oil 7 is ejected from the ejection port portion 10 toward the inlet 12 to a space on the front side of the tool holder 4. Since the cooling oil is injected from the injection port portion into the space, it is not necessary to connect the injection port portion and the direction changing portion of the projection portion by a pipe, and when the tool holder is replaced, it is only necessary to detach the tool holder from the tool rest, and the tool holder can be easily replaced.
In the process in which the cooling oil 7 injected into the above-described space moves from the inlet 12 toward the outlet 13 via the direction change portion 11, the ejection direction of the cooling oil 7 is changed from the diameter direction of the tool holder 5 to a direction parallel to the center line of the tool 6 toward the gap between the main body portion 17 and the inner hole 23 of the tool 6.
Therefore, the cooling oil 7 injected from the direction changing portion 11 into the gap between the main body portion 17 and the inner hole 23 reaches the machined portion formed by the workpiece 2 and the cutter portion 18 and cools both the workpiece 2 and the cutter portion 18 well. The cooling oil 7 having cooled both the workpiece 2 and the cutter portion 18 passes through a cooling oil recovery path not shown, and after chips are removed by a filter provided in the cooling oil recovery path, it is returned to a supply source not shown.
In the process cooling device according to embodiment 2 of the present invention shown in fig. 2, a cover 25 for covering an opening on the outer peripheral surface side of the projection 8 in the groove-like direction change portion 11 is provided at the projection 8 to prevent scattering of the cooling oil 7 entering the direction change portion 11.
In the machining cooling device according to embodiment 3 of the present 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 spatial distance between the straightening pipe 26 and the inlet 12 is reduced to facilitate injection of the cooling oil 7 injected into the space from the straightening pipe 26 into the inlet 12. Further, if the injection direction of the cooling oil 7 is corrected so that the cooling oil 7 injected from the correcting pipe 26 is parallel to the front surface of the tool rest 4 facing the workpiece 2, the inlet 12 can be provided at a position close to the tool rest 4 side, the path of the direction changing portion 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 embodiment 4 of the present invention shown in fig. 4, the direction change portion 11 provided in the tool holder 5 is formed in a hole shape. That is, the direction change portion 11 has a vertical hole recessed from the outer peripheral surface of the tool holder 5 on the inlet 12 side toward the inside in the diameter direction, and a lateral hole extending from the front surface of the tool holder 5 on the outlet 13 side facing the workpiece 2 in a direction parallel to the center line of the tool 6 to connect with the vertical hole, the cooling oil 7 ejected from the ejection port portion 10 or the leveling pipe 26 to the inlet 12 via the space on the front surface side of the tool rest 4 is guided from the direction change portion 11 to the outlet 13 without escaping to the outside, and the ejection direction of the cooling oil 7 from the outlet 13 via the space between the workpiece 2 and the tool holder 5 becomes stable. The correction tube 26 is removed in fig. 4 and can be applied.
In the machining cooling device according to embodiment 5 of the present invention shown in fig. 5, a housing wall 27 is provided around the inlet 12 of the tool holder 5 so as to protrude outward in the diameter direction of the tool holder 5, and the housing 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 surface side of the tool holder 4. The housing wall 27 is configured as a shield having a covering portion formed by dividing a tube into two parts along a center line extending in the vertical direction of the tube, and an upper end portion of the divided tube is projected toward the ejection port portion 10. Although not shown in fig. 5, the end of the housing wall 27 is spherical and forms a ball joint slidably supported in a housing recess provided around the inlet 12 of the tool holder 5, and the housing wall 27 may be adjustable in inclination.
In the machining cooling device of embodiment 6 of the present invention shown in fig. 6, it is configured that a taper drill is provided as the tool 6 at the tool rest 4. That is, since the outer shape of the mounting portion 19 of the tool 6 is a tapered shape that tapers from the workpiece 2 side to the rear, the tool receiving hole 22 of the tool holder 5 is a tapered shape that matches the tapered shape. Thus, the attachment portion 19 of the tool 6 is fitted into the tool receiving hole 22 and fixed as it is received in the tool receiving hole 22 from the front side of the tool holder 5.
Then, since the outlet 13 of the direction change portion 11 is provided at the front surface of the protrusion portion 8, it is possible to arrange the outlet 13 in the vicinity of the tool 6 supported by the tool holder 5, and since the outlet 13 is disposed in close abutting contact with the tool 6 supported by the tool holder 5, the cooling oil 7 is ejected in parallel from the outlet 13 in close contact along the outer surface of the tool 6.
Therefore, when the helical blade portion 18 formed from the tip end of the main body portion 17 of the tool 6 to the rear of the main body portion 17 machines the barrel-shaped internal hole 28 at the workpiece 2, even if the machining of the workpiece 2 by the tool 6 enters deep into the workpiece 2, most of the cooling oil 7 ejected from the outlet 13 does not bounce at the front surface of the workpiece 2 facing the ejection port portion 10, but reaches the machined portion formed by the tip ends of the blade portions 18 of the workpiece 2 and the tool 6 located deep into the workpiece 2 via the gap between the internal hole 23 of the workpiece 2 and the tool 6, and the machined portion formed by the workpiece 2 and the tool 6 is well cooled by the cooling oil 7. The correction tube 26 is removed in fig. 6 and can be applied.
In the machining cooling device according to embodiment 7 of the present invention shown in fig. 7, a tool holder 5 called a straight shaft for providing a drill chuck 31 to a tool post 4 is used, an outlet 13 is provided at a central portion of a tip tapered portion 32 protruding from a protrusion portion 8 of the tool holder 5 to the workpiece 2 side, the cooling oil 7 injected from the injection port portion 10 or the leveling pipe 26 to the inlet 12 via a space on the front surface side of the tool post 4 is guided from the direction change portion 11 to the outlet 13 without escaping to the outside, and the core hole 33 passing through the drill chuck 31 from the outlet 13 reaches a machining portion formed by the workpiece 2 and the cutter portion 18 via a gap between the claw 34 of the drill chuck 31 and the tool 6 called a drill supported by the claw 34 to cool both the workpiece 2 and the cutter portion 18. In fig. 7, the correction tube 26 may also be removed and the same can be applied even if the drill chuck is replaced with a collet chuck. In fig. 7, the housing wall 27 of fig. 5 may be provided instead of the straightening tube 26.
The tool holder 5 of embodiment 8 of the present invention shown in fig. 8 to 11 includes three direction conversion portions 11. The three direction converting portions 11 are configured independently of each other such that the cooling oil 7 injected into the inlets 12 opened circumferentially spaced apart at the outer peripheral surface of the protruding portion 8 of the tool holder 5 is discharged from the outlets 13 opened circumferentially spaced apart from each other at the front surface of the protruding portion 8. A flow straightening member 35 for concentrating the flow of the cooling oil 7 ejected from the outlet 13 into the space in a predetermined direction is provided inside each outlet 13.
A chamfered portion 36 is formed annularly around the outer peripheral surface at a position where the outer peripheral surface and the front surface of the protrusion 8 intersect. The chamfered portion 36 is a slope that gradually becomes a downward gradient as going from the rear side to the front side (see fig. 10).
As shown in fig. 8 and 10, a fastening screw 37 for fixing the tool 6 (see fig. 6) to the tool holder 5 is provided at the protrusion portion 8 so as not to interfere with the direction converting portion 11. Specifically, in a case where the tool holder 5 is viewed from the front side in a manner that the direction change portion 11 is located on the upper side as shown in fig. 8, the fastening screws 37 are provided at three locations in total, that is, two right and left locations where one straight line extending in the right and left direction through the center of the tool holder 5 intersects with the outer peripheral surface of the protrusion portion 8, and one location where one straight line extending in the up and down direction through the center of the tool holder 5 intersects with the lower portion of the outer peripheral surface of the protrusion portion 8. Further, as shown in fig. 10, a fastening screw 37 is separately mounted at a screw hole 38 passing through the outer peripheral surface of the projection 8 and the tool receiving hole 22.
Further, as shown in fig. 8 and 11, four mounting flat surface portions 39 are formed at 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 surface portions 39 are parallel to each other with the center of the tool holder 5 sandwiched therebetween on a center line L1, and the other two mounting flat surface portions 39 are parallel to each other with the center of the tool holder 5 sandwiched therebetween on a center line L2 orthogonal to the center line L1.
Since the four mounting flat portions 39 are provided, the tool holder 5 can correspond to the tool rest 4 of a processing machine manufactured by various manufacturing companies. Specifically, the positional relationship between the fastening screw 40 for fixing the tool holder 5 to the tool post 4 and the ejection port portion 10 differs depending on various manufacturing companies of the processing machine.
When the tool holder 5 is developed, the positions where the fastening screws 40 are provided are examined for the tool holders 4 manufactured by various manufacturing companies, and as a result, it is found that, when the tool holder 4 is placed so that the ejection port portion 10 is positioned above the holder storage hole 16 as shown in fig. 12, the fastening screws 40 are provided at the upper surface as in the tool holder 4A, at the right-side surface as in the tool holder 4B, at the lower surface as in the tool holder 4C, or at the left-side surface as in the tool holder 4D. As a result of this investigation, as shown in fig. 11, four mounting flat surface portions 39 are provided at the mounting portion 21 of the tool holder 5. When the tool holder 5 is viewed from the front surface, each of the four mounting flat surface portions 39 is distinguished by designating an upper mounting flat surface portion 39 of the four mounting flat surface portions 39 as 39A, a right mounting flat surface portion 39 as 39B, a left mounting flat surface portion 39 as 39C, and a lower mounting flat surface portion 39 as 39D.
The following is illustrated in fig. 12: in the tool holder 4A, a fastening screw 40 for fixing the tool holder 5 to the tool holder 4A is provided at an upper surface extending rearward from an upper edge of a front surface provided with the ejection port portion 10, in the tool holder 4B, a fastening screw 40 for fixing the tool holder 5 to the tool holder 4B is provided at a right side surface extending rearward from a right edge of the front surface provided with the ejection port portion 10, in the tool holder 4C, a fastening screw 40 for fixing the tool holder 5 to the tool holder 4C is provided at a lower surface extending rearward from a lower edge of the front surface provided with the ejection port portion 10, and in the tool holder 4D, a fastening screw 40 for fixing the tool holder 5 to the tool holder 4D is provided at a left side surface extending rearward from a left edge of the front surface provided with the ejection port portion 10.
A combination of the tool holders 5 and the tool holders 4A to 4D according to embodiment 9 of the present invention shown in fig. 12 will be described. In fig. 12, in the case of mounting the tool holder 5 to the holder 4A, after the mounting portion 21 having four mounting flat surface portions 39 (39A, 39B, 39C, 39D of fig. 11) at the outer peripheral surface of the tool holder 5 which is circular in plan view is inserted into the holder accommodating hole 16 which is circular in plan view of the holder 4A in such a manner that the inlet 12 of the tool holder 5 is located directly below the ejection port portion 10 of the holder 4A, the fastening screw 40 is guided to the internal thread to which the fastening screw 40 is mounted by manual operation using a fastening tool such as a screwdriver, not shown, while advancing to the holder accommodating hole 16 side, and the tip of the fastening screw 40 abuts against the mounting flat surface portion 39A on the upper side of the tool holder 5, thereby fixing the tool holder 5 to the holder 4A.
Further, in fig. 12, in the case of mounting the tool holder 5 to the holder 4B, after the mounting portion 21 having four mounting flat surface portions 39 (39A, 39B, 39C, 39D of fig. 11) at the outer peripheral surface of the tool holder 5 which is circular in plan view is inserted into the holder accommodating hole 16 which is circular in plan view of the holder 4B in such a manner that the inlet 12 of the tool holder 5 is located directly below the ejection port portion 10 of the holder 4B, the fastening screw 40 is guided to the female screw to which the fastening screw 40 is mounted by manual operation while traveling to the holder accommodating hole 16 side using a fastening tool such as a screwdriver, not shown, and the tip of the fastening screw 40 abuts against the mounting flat surface portion 39B on the right side of the tool holder 5, thereby fixing the tool holder 5 to the holder 4B.
Further, in fig. 12, in the case of mounting the tool holder 5 to the holder 4C, after the mounting portion 21 having four mounting flat surface portions 39 (39A, 39B, 39C, 39D of fig. 11) at the outer peripheral surface of the tool holder 5 which is circular in plan view is inserted into the holder receiving hole 16 of the holder 4C which is circular in plan view in such a manner that the inlet 12 of the tool holder 5 is located directly below the ejection port portion 10 of the holder 4C, the fastening screw 40 is guided to the female screw to which the fastening screw 40 is attached by manual operation using a fastening tool such as a screwdriver, not shown, while advancing to the holder receiving hole 16 side, the tip of the fastening screw 40 abuts against the right mounting flat surface portion 39 of the tool holder 5, i.e., the mounting flat surface portion 39C in fig. 11, and thereby the tool holder 5 is fixed to the holder 4C.
Further, in fig. 12, in the case of mounting the tool holder 5 to the holder 4D, after the mounting portion 21 having four mounting flat surface portions 39 (39A, 39B, 39C, 39D of fig. 11) at the outer peripheral surface of the tool holder 5 which is circular in plan view is inserted into the holder receiving hole 16 of the holder 4D which is circular in plan view in such a manner that the inlet 12 of the tool holder 5 is located directly below the ejection port portion 10 of the holder 4D, the fastening screw 40 is guided to the female screw to which the fastening screw 40 is attached by manual operation using a fastening tool such as a screwdriver, not shown, while advancing to the holder receiving hole 16 side, the tip of the fastening screw 40 abuts against the left mounting flat surface 39 of the tool holder 5, i.e., the mounting flat surface 39D of fig. 11, and the tool holder 5 is fixed to the holder 4D.
The results of examining the positions where the fastening screws 40 are provided with respect to the tool holders 4 manufactured by various manufacturing companies in developing the tool holder 5 according to embodiment 10 of the present invention shown in fig. 13 will be described. In fig. 13, it can be understood that, as shown by the imaginary line, all the injection port portions 10 investigated are concentrated in the upper portion between the center line L1 extending in the up-down direction through the center P1 of the protrusion portion 8 of the tool holder 5 and the center line L2 extending in the left-right direction through the center P1, and the angle θ 1 from the center line L1 toward the center line L2 has a range of two straight lines L3 and L4 of 30 degrees to 45 degrees. Based on the investigation results, the inlets 12 and outlets 13 in the three direction changing portions 11 are individually provided at three locations where the center line L2 intersects with one circumference L5 of the two straight lines L3 and L4 centered on the center P1, so that the tool holder 5 can correspond to the tool post 4 of a processing machine manufactured by various manufacturing companies. The most preferable angle is 35 degrees θ 1. Further, the inlet 12 and the outlet 13 in the direction conversion portion 11 may also be provided separately at two locations where the straight lines L3 and L4 intersect the circumference L5, and the inlet 12 and the outlet 13 in one direction conversion portion 11 may also be provided separately at any one location where the straight lines L3 and L4 intersect the circumference L5.
The results of verifying the angles of the vertical hole on the inlet 12 side and the horizontal hole on the outlet 13 side of the direction conversion portion 11 when developing the tool holder 5 according to embodiment 11 of the present invention will be described with reference to fig. 14.
In fig. 14, 45 to 55 degrees are within the allowable range and 50 degrees are the most preferable for the angle θ 2 formed by the center line L6 extending in the vertical direction of the vertical hole on the inlet 12 side and the center line L7 extending in the lateral direction of the tool accommodating hole 22, and 0 to 15 degrees are within the allowable range and 5 to 10 degrees are the most preferable for the angle θ 3 formed by the center line L8 extending in the horizontal direction of the lateral hole on the outlet 13 side and the center line L7 extending in the lateral direction of the tool accommodating hole 22, and it is confirmed that the cooling oil 7 is injected in a bundle without scattering from the outlet 13. It is also confirmed that when the bottom portion 41 where the vertical hole on the inlet 12 side and the horizontal hole on the outlet 13 side intersect is formed in an arc shape that is concave downward, θ 3 is 0 degrees, that is, the cooling oil 7 is led out from the outlet 13 in parallel with the center line L7.
A result of verifying the relationship among the three direction converting portions 11, the tool accommodating hole 22, and the fastening screw 37 in the tool holder 5 according to embodiment 12 of the present invention will be described with reference to fig. 15. As shown in fig. 15 (a), since the tool receiving hole 22 has a large diameter, if the fastening screw 37 is not disturbed even if three inlets 12 and three outlets 13 of the direction converter 11 are provided separately, the cooling oil 7 is injected in a bundle without scattering from the outlets 13, which is an optimum configuration.
However, as shown in fig. 15 (B), since the diameter of the tool receiving hole 22 is small, even if three inlets 12 and three outlets 13 of the direction changing portion 11 are provided individually without interfering with the fastening screws 37, adjacent portions of the three outlets 13 are connected to each other, and it is confirmed that the cooling oil 7 is scattered and ejected from the three outlets 13 connected to each other, and the ejection of the cooling oil 7 is poor.
Therefore, since the diameter of the tool receiving hole 22 is small, even if the inlet 12 and the outlet 13 of the direction change portion 11 are each provided individually three without interfering with the fastening screw 37, in the case where adjoining portions of the three outlets 13 are connected to each other, as shown in (C) of fig. 15, the inlet 12 of the direction change portion 11 is 3 and the outlets 13 are gathered into one, so that interference with the fastening screw 37 is avoided, and the cooling oil 7 is ejected in a bundle without scattering from one outlet 13, which is an optimum configuration.
That is, in the case where the diameter of the tool receiving hole 22 is small and it is difficult to provide three outlets 13 without interfering with the fastening screw 37, as shown in (C) in fig. 15, by integrating into one outlet 13, the cooling oil 7 is ejected in a bundle without scattering.
In the direction changing portion 11 in the tool holder 5 according to embodiment 13 of the present invention shown in fig. 16 (a) to 16 (C), the upper portion above the tool accommodating hole 22 of the protrusion portion 8 is configured as a flat inclined surface gradually having a downward gradient from the inlet 12 side to the outlet 13 side. With this configuration, the direction converting portion 11 has a simple structure. The portion between the inlet 12 and the outlet 13 of the direction change portion 11 is opened at the outer circumferential surface and the front surface of the protrusion portion 8. As shown in fig. 16 (a), the direction converting portion 11 is not bent upward and protruded like the chamfered portion 36 shown in fig. 9, but is cut straight in the left-right direction. Therefore, it is possible to prevent the ejection direction of the cooling oil 7 from being divided into the left and right directions when the cooling oil 7 hits a flat slope.
Further, in the case where the tool holder 5 is viewed from the side surface as shown in (B) in fig. 16, an angle θ 4 formed by the flat inclined surface of the direction changing portion 11 and a center line L7 extending in the lateral direction of the tool receiving hole 22 is not particularly limited, but may be set to an angle of θ 3 in fig. 14. By constituting the angle, the cooling oil can be further ejected from the outlet port in parallel in close proximity along the outer surface of the tool and in contact therewith.
Further, the tool holder 5 shown in fig. 16 (D) to 16 (F) is configured to be provided with three flat slopes as the direction changing portion 11 adjacent to the protrusion portion 8 in the left-right direction. In the case where a plurality of flat slopes are provided as the direction changing portion 11, each of the angles θ 4 formed by the flat slopes of the direction changing portion 11 and the center line L7 extending in the lateral direction of the tool accommodating hole 22 may be set to the angle θ 3 of fig. 14.
Further, as shown in (D) in fig. 16, it is preferable that angles (angles on the center P1 side) θ 5 and θ 6 formed by two flat inclined surfaces of adjacent direction converting portions 11 in a case where the direction converting portions 11 are viewed from the front surface side are 135 degrees to 150 degrees. If the angle is set, the tool holder 5 can be preferably used for a tool post 4 of a processing machine manufactured by various manufacturing companies as shown in fig. 13. Additionally, for the most preferred angles, the angles of θ 5 and θ 6 are 145 degrees.
The angles θ 5 and θ 6 may be the same angle or different angles. Further, two, four, or five or more direction changing portions 11 may be provided. When a plurality of direction converting portions 11 are provided, a plurality thereof may be provided individually or may be provided adjacently.
In the direction changing portion 11 in the tool holder 5 according to embodiment 14 of the present invention shown in fig. 17 (a) to 17 (C), the upper portion above the tool accommodating hole 22 of the protrusion 8 is configured as a flat inclined surface gradually changing into a downward gradient from the inlet 12 side to the outlet 13 side, and is configured as a sharp inclined surface on the inlet 12 side and a gentle inclined surface on the outlet 13 side. The steep slope is a flat slope. Further, the gentle slope is a flat slope. As shown in fig. 17 (a), the steep slope and the gentle slope are linearly cut in the left-right direction, and do not have a shape that is curved and protrudes in the upper direction as in the chamfered portion 36 shown in fig. 9. Therefore, it is possible to prevent the spray direction of the cooling oil 7 from being divided into the left and right directions when the cooling oil 7 hits a steep slope and a gentle slope.
When the tool holder 5 is viewed from the side surface as shown in fig. 17 (B), an angle θ 7 formed by the steep slope on the inlet 12 side and a center line L7 extending in the lateral direction of the tool accommodating hole 22 is not particularly limited, but may be set to an angle θ 2 in fig. 14. The inlet 12 side steep slope is configured to gradually become a downward gradient slope as going from the inlet 12 side to the outlet 13 side.
When the tool holder 5 is viewed from the side surface as shown in fig. 17 (B), an angle θ 8 formed by the gentle slope on the outlet 13 side and a center line L7 extending in the lateral direction of the tool accommodating hole 22 is not particularly limited, but may be set to an angle θ 3 in fig. 14. If this angle is used, the cooling oil can be further ejected from the outlet port in parallel, close to each other along the outer surface of the tool and in contact therewith. The gentle slope on the outlet 13 side is configured to gradually become a slope having a downward gradient as going from the inlet 12 side to the outlet 13 side. The number of direction converting units 11 is not limited to one, and may be two, three, four, or five or more.
Although not shown, a plurality of direction changing portions 11 including the inlet 12 side steep slope and the outlet 13 side gentle slope may be provided adjacent to the protrusion 8 in the left-right direction, as in fig. 16 (D) to 16 (F).
When a plurality of steep slopes and gentle slopes are provided as the direction changing portion 11, each of the angles θ 7 formed by the steep slopes of the direction changing portion 11 and the center line L7 extending in the lateral direction of the tool accommodating hole 22 may be set to the angle θ 2 in fig. 14. Further, each of angles θ 8 formed by the gentle slope on the outlet 13 side of the direction changing portion 11 and the center line L7 extending in the lateral direction of the tool accommodating hole 22 may be set to an angle of θ 3 in fig. 14.
Preferably, when the direction changing portion 11 is viewed from the front surface side, the angle formed by the gentle slopes on the two outlet 13 sides of the adjacent direction changing portions 11 (the angle on the center P1 side) is 135 degrees to 150 degrees. If the angle is set, the tool holder 5 can be preferably used for a tool post 4 of a processing machine manufactured by various manufacturing companies as shown in fig. 13. Further, the most preferable angle is 145 degrees.
When the direction changing portion 11 is viewed from the front surface side, the angles of the angles formed by the gentle slopes on the two outlet 13 sides of the adjacent direction changing portions 11 (the angles on the center P1 side) may be the same angle or different angles. In the case where a plurality of direction converting portions 11 are provided, the plurality of direction converting portions may be provided individually or may be provided adjacent to each other.
In the above embodiments of the present invention, the structure in which the holder 4 and the tool holder 5 are separate members is exemplified, but the holder 4 and the tool holder 5 may be integrally formed. That is, it is also possible to provide the protrusion portion 8 at the front surface of the tool holder 4, and to support the tool 6 and provide the direction converting portion 11 at the protrusion portion 8. Further, a projection 8 having a direction change portion 11 may be provided at the tool 6. At this time, as shown in fig. 36 to 51, the protrusion 8 of the tool holder 5 from which the attachment portion 21 is removed may be detachably provided at the tool 6, or the protrusion 8 may be provided at the tool 6 in an integral structure. The direction converting portion 11 in the protruding portion 8 of the tool holder 5 from which the mounting portion 21 is removed can be applied to embodiments 1 to 14 of the present invention.
Description of the reference numerals
Cooling oil 7
The ejection port part 10
An outlet 13
Mounting part 19
Mounting part 21
Inner bore 23
Straightening tube 26
Internal bore 28
Pointed conical part 32
Flow regulating member 35
Fastening screw 37
Mounting plane 39
Fastening screw 40
Claims (19)
1. A machining cooling device for cooling a portion where a workpiece disposed at a workpiece disposing portion is machined by a tool supported by a tool rest in the tool disposing portion with cooling oil, characterized in that the machining cooling device has a projection portion at which a direction changing portion is disposed so that the cooling oil injected into a space from an injection port portion is introduced from an outer peripheral surface of the projection portion and is led out from a front surface of the projection portion toward the machining portion, and both of an introduction portion and a lead-out portion of the cooling oil in the direction changing portion are configured to be open.
2. A tool holder that supports a tool at a tool rest in a tool setting portion with respect to a workpiece set at the workpiece setting portion, wherein a direction change portion is provided at a projection portion of the tool holder that projects from a front surface of the tool rest to the workpiece side around the tool, so that cooling oil that is ejected from an ejection port portion of the front surface of the tool rest on the side facing the workpiece is introduced from an outer peripheral surface of the projection portion and led out from the front surface of the projection portion toward the machining portion, and both an introduction portion and a lead-out portion of the cooling oil in the direction change portion are configured to be open.
3. A tool post that supports a tool at a tool setting portion with respect to a workpiece set at the workpiece setting portion, wherein a spray port portion is provided at a front surface of the tool post on a side facing the workpiece so that cooling oil is sprayed into a space toward an outer peripheral surface of a protrusion portion that surrounds the tool and protrudes from the front surface to a workpiece side, a direction change portion is provided at the protrusion portion so that the cooling oil sprayed from the spray port portion is introduced from the outer peripheral surface of the protrusion portion and is led out from the front surface of the protrusion portion toward the machining portion, and both of an introduction portion and a lead-out portion of the cooling oil in the direction change portion are configured to be open.
4. The process cooling device according to claim 1, wherein the direction converting portion is provided in an upper portion between a center line extending in a vertical direction through a center of the protrusion portion and a center line extending in a left-right direction through the center, at a portion where a straight line having an angle θ 1 of 30 degrees to 45 degrees from the center line extending in the vertical direction toward the center line extending in the left-right direction through the center intersects one circumference having the center as a center, and at a portion where the center line extending in the vertical direction intersects the circumference.
5. The tool holder according to claim 2, wherein the direction changing portion is provided in an upper portion between a center line extending in an up-down direction through a center of the protrusion portion and a center line extending in a left-right direction through the center, at a portion where a straight line having an angle θ 1 of 30 degrees to 45 degrees from the center line extending in the up-down direction toward the center line extending in the left-right direction through the center intersects one circumference having the center as a center, and at a portion where the center line extending in the up-down direction intersects the circumference.
6. The tool holder according to claim 3, wherein the direction change portion is provided in an upper portion between a center line extending in an up-down direction through a center of the protrusion portion and a center line extending in a left-right direction through the center, at a portion where a straight line having an angle θ 1 of 30 degrees to 45 degrees from the center line extending in the up-down direction toward the center line extending in the left-right direction through the center intersects one circumference having the center as a center, and at a portion where the center line extending in the up-down direction intersects the circumference.
7. A cooling method for cooling a portion where a workpiece set at a workpiece setting portion is machined by a tool supported by a tool holder in the tool setting portion with cooling oil, characterized by cooling with the use of the machining cooling device according to claim 1, the tool holder according to claim 2, or the tool holder according to claim 3.
8. The machining cooling device according to claim 1, wherein an angle formed by a center line of the hole on the side of the introduction portion and a center line of the tool receiving hole is 45 degrees to 55 degrees.
9. The tool holder according to claim 2, wherein an angle formed by a center line of the hole on the side of the introduction portion and a center line of the tool receiving hole is 45 degrees to 55 degrees.
10. The tool holder according to claim 3, wherein an angle formed by a center line of the hole on the side of the introduction portion and a center line of the tool receiving hole is 45 degrees to 55 degrees.
11. The machining cooling device according to claim 1, wherein an angle formed by a center line of the hole on the lead-out portion side and a center line of the tool receiving hole is 0 degree to 15 degrees.
12. The tool holder according to claim 2, wherein an angle formed by a center line of the hole on the lead-out portion side and a center line of the tool receiving hole is 0 to 15 degrees.
13. The tool holder according to claim 3, wherein an angle formed by a center line of the hole on the side of the lead-out portion and a center line of the tool receiving hole is 0 to 15 degrees.
14. A machining cooling device for cooling a portion where a workpiece disposed at a workpiece disposing portion is machined by a tool supported by a tool rest in the tool disposing portion with cooling oil, characterized in that the machining cooling device has a projection portion at which a direction changing portion is disposed so that the cooling oil injected into a space from an injection port portion is introduced from an outer peripheral surface of the projection portion and is led out from a front surface of the projection portion toward the machining portion, the direction changing portion being configured as a flat inclined surface gradually changing to a downward gradient as going from an introduction portion side to an lead-out portion side of the cooling oil.
15. A tool holder that supports a tool at a tool rest in a tool setting portion with respect to a workpiece set at the workpiece setting portion, characterized in that a direction change portion is provided at a protrusion portion of the tool holder that protrudes from a front surface of the tool rest to the workpiece side around the tool so that cooling oil sprayed from a spray port portion of the front surface of the tool rest on the side facing the workpiece is introduced from an outer peripheral surface of the protrusion portion and led out from the front surface of the protrusion portion toward the machining portion, the direction change portion being configured as a flat slope that gradually becomes a downward gradient as going from an introduction portion side to an exit portion side of the cooling oil.
16. A tool post that supports a tool at a tool setting portion with respect to a workpiece set at the workpiece setting portion, characterized in that a jet port portion is provided at a front surface of the tool post on a side facing the workpiece so that cooling oil is jetted to a space toward an outer peripheral surface of a protrusion portion that protrudes from the front surface to a workpiece side around the tool, a direction change portion is provided at the protrusion portion so that the cooling oil jetted from the jet port portion is introduced from the outer peripheral surface of the protrusion portion and is led out from the front surface of the protrusion portion toward the machining portion, the direction change portion being configured as a flat slope that gradually becomes a downward gradient as going from an introduction portion side to an lead-out portion side of the cooling oil.
17. A process cooling apparatus according to claim 14, wherein the angle formed by the flat inclined surface and the center line of the tool receiving hole is 0 to 15 degrees.
18. The tool holder of claim 15, wherein the flat ramp forms an angle with a centerline of the tool receiving bore of 0 to 15 degrees.
19. The toolholder according to claim 16, wherein the flat chamfer forms an angle with a centerline of the tool receiving hole of from 0 degrees to 15 degrees.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-125639 | 2019-07-04 | ||
| JP2019125639 | 2019-07-04 | ||
| PCT/JP2020/026173 WO2021002451A1 (en) | 2019-07-04 | 2020-07-03 | Machining cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113905848A true CN113905848A (en) | 2022-01-07 |
| CN113905848B CN113905848B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080038419.XA Active CN113905848B (en) | 2019-07-04 | 2020-07-03 | Machining cooling device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2021002451A1 (en) |
| CN (1) | CN113905848B (en) |
| TW (1) | TW202110568A (en) |
| WO (1) | WO2021002451A1 (en) |
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| JP6961848B1 (en) * | 2021-02-01 | 2021-11-05 | Dmg森精機株式会社 | Machine Tools |
| EP4300022A1 (en) | 2021-03-26 | 2024-01-03 | FUJIFILM Corporation | Freeze-drying container |
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2020
- 2020-07-03 CN CN202080038419.XA patent/CN113905848B/en active Active
- 2020-07-03 WO PCT/JP2020/026173 patent/WO2021002451A1/en active Application Filing
- 2020-07-03 JP JP2021529199A patent/JPWO2021002451A1/ja active Pending
- 2020-07-03 TW TW109122580A patent/TW202110568A/en unknown
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113905848B (en) | 2023-09-19 |
| TW202110568A (en) | 2021-03-16 |
| JPWO2021002451A1 (en) | 2021-01-07 |
| WO2021002451A1 (en) | 2021-01-07 |
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