JP2884312B2 - Foaming liquid discharge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to supplied gas and liquid
With the processing fluid from above into a foaming processing fluid with a porous member
The present invention relates to an apparatus for discharging a foamed working liquid.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 5-104393 discloses a foaming fluid discharging device for discharging a foaming fluid.
In this foaming processing liquid discharge device, a mixture of the supplied gas and the liquid processing liquid is converted into a foaming processing liquid by the porous member and discharged from the outer surface of the porous member.

FIG. 17 shows the relationship between the supply pressure of the mixture supplied to the foaming liquid discharger and the discharge volume of the foaming liquid discharged from the outer surface of the porous member. From the figure, it can be seen that the discharge volume is maximized when the supply pressure is at an appropriate value. When the discharge volume is large, the volume of the gas to be discharged is large, and the amount of gas contained in the foamed processing liquid is large. Even if the supply pressure is larger or smaller than the appropriate value, the discharge volume decreases,
The amount of gas contained in the discharged foamed processing liquid is reduced. If the supply pressure is too high or too low, the processing liquid to be discharged does not form a foam but becomes a mist or a liquid. The appropriate supply pressure at which the discharge volume is maximized is determined by the properties of the porous member and the processing liquid, such as the pore diameter and aperture ratio of the porous member, the viscosity of the processing liquid, the type of surfactant contained in the processing liquid, and the like.

On the other hand, in the milling apparatus shown in FIGS. 19 to 21, the supply pressure of the mixture supplied to the foaming fluid supply apparatus during milling and the cutting edge of the cutting tool 302 in one rotation of the milling tool 300. FIG. 18 shows the relationship with the temperature change amount of a nearby portion (hereinafter, referred to as a blade edge portion 304). The amount of temperature change of the cutting edge portion 304 during one rotation of the milling tool 300 is a predetermined cutting tool 3
02 is the amount of change in temperature from the temperature at the position D immediately before the start of cutting when the temperature is at the position C immediately after the end of cutting. From FIG. 18, the amount of temperature change during one rotation of the cutting edge 304 is smallest when the discharge volume is maximum (the gas content of the foaming processing liquid is maximum), and the supercooling prevention of the processing tool 300 is the best. It turns out that it becomes.

[0005] The amount of temperature change of the blade tip 304 is determined by the blade 3
It can be considered that this corresponds to the difference between the temperature of the blade edge portion 304 of No. 02 and the temperature of the portion 306 other than the blade edge portion 304. When milling is performed using a liquid processing liquid, the cutting edge 304 of the cutting tool 302 becomes hot during cutting, while the portion 306 is excessively cooled by the processing liquid. As a result, a large temperature difference occurs in the cutting tool 302, and the temperature difference causes a thermal crack, thereby significantly shortening the life of the processing tool 300. On the other hand, when the working fluid is not used, since the cutting tool is not rapidly cooled, this problem hardly occurs. However, cutting chips and dust are scattered, and the working environment is deteriorated. On the other hand, if the milling is performed using a foamed working fluid, the cutting tool 30 can be prevented while preventing scattering of dust and the like.
Since the supercooling of the second part 306 can be prevented, the cutting tool 302
The temperature difference in the inside becomes small and thermal cracks hardly occur, and this effect is maximized when the discharge volume of the foamed working liquid is the maximum.

[0006]

However, according to the conventional apparatus for discharging a foaming liquid, there is a problem that uneven discharge of the foaming liquid occurs on the outer surface of the porous member. Since the distribution of the pressure and the liquid amount on the inner surface of the porous member of the mixture supplied to the foaming processing liquid discharge device is uneven, a foaming processing liquid having a large gas content is discharged to the outer surface of the porous member. In some cases, a foamed working fluid (mist or liquid working fluid) containing a small amount of gas may be discharged, or a large or small amount of foamed working fluid may be discharged. . In addition, since there is uneven discharge, it is difficult to uniformly supply the foaming working fluid with a high gas content to the working tool by the foaming working fluid discharger, and the supercooling prevention of the working tool is maintained in a good state. There was also a problem that it was difficult to do.

[0007] In particular, when the porous member is cylindrical, a wide
On the other hand, there is an advantage that the foamed working liquid can be discharged from a large surface, but on the other hand, the discharge unevenness is remarkable, and it is difficult to maintain the supercooling preventing property of the processing tool in a good state. As shown in FIG. 16, in the foaming processing liquid discharge device provided with the bottomed cylindrical porous member 350, the mixture of the gas supplied from the mixture supply pipe 352 and the liquid processing liquid is supplied to the discharge port. 354 to the inner surface 356 of the porous member 350, and is supplied to the outer surface 358 of the porous member 350 by being formed into a foamed working liquid by the porous member 350
Is discharged from.

The pressure of the mixture supplied from the discharge port 354 to the inner side surface 356 of the porous member 350 is large at a portion (bottom) A facing the discharge port 354, and
It becomes smaller in the portion B of the vicinity outer peripheral portion. Therefore, the discharge pressure and the amount of the processing liquid discharged from the outer surface 358 of the porous member 350 are large in the portion A and small in the portion B as shown by the arrow Q in the figure. Therefore, even if the supply pressure of the mixture from the discharge port 354 is set to an appropriate value, the foamed processing liquid having a large content of gas is not uniformly discharged from the entire outer surface 358, but the content of gas is large from the part A. If the foaming liquid is discharged,
If a foaming processing liquid or a liquid processing liquid having a small gas content is discharged from the part B, and a foaming processing liquid having a large gas content is discharged from the part B, a mist-like liquid is discharged from the part A. The working fluid is discharged. Therefore, it is difficult to supply a uniform foaming liquid having a large gas content to the processing tool by the foaming liquid supply device, and it is difficult to maintain the supercooling preventing property of the processing tool in a good state. .

[0009] Further, the supply amount of the liquid processing liquid is increased below the cylindrical portion of the inner side surface 356 of the porous member 350. Therefore, in many cases, a foaming processing liquid or a liquid processing liquid containing a small amount of gas is discharged from the lower part. In addition, it describes in FIG.
The cylindrical porous member has a gas and a liquid processing liquid from the inner peripheral surface side.
And discharges the foaming processing liquid from the outer peripheral side.
Yes, from the perspective of shape and from the perspective of ejection
Although the surface is an inner surface, as will be described later, the present invention
Gas and liquid processing from the outer peripheral side inside the cylindrical porous member
Liquid, and discharges the foaming processing liquid from the inner peripheral surface side.
In this case, the outer peripheral surface is
The inner surface and the inner peripheral surface are the outer surfaces.

Further, in the conventional foaming fluid discharge device, the above-mentioned machining fluid having a small gas content discharged from the lower portion of the cylindrical portion of the cylindrical porous member 350 for discharging the foaming fluid from the outer peripheral surface. Was not being recovered. As described above, from the lower part of the cylindrical portion, a small amount of gaseous processing liquid or liquid processing liquid is often discharged,
There is a problem that these liquids hardly stay around the working tool and immediately flow away, so that the working fluid is wasted.

In view of the above circumstances, the object of the present invention is
Is the discharge of the cylindrical porous member for discharging the foamed processing liquid
Is to reduce the disadvantages that are likely to occur.
Ming also reduces the drawbacks that the working fluid is wasted
It is also an issue.

[0012]

Means for Solving the Problems, Functions and Effects of the Invention
According to the foamed working fluid discharge device of the following each configuration is obtained,
In these, a foaming processing liquid is discharged from the outer peripheral surface side.
The disadvantage that discharge unevenness of the cylindrical porous member is likely to occur is reduced. (1) The supplied gas and the liquid processing liquid are separated by a porous member.
This is a foaming fluid discharge device that discharges as a foaming fluid.
Therefore, the porous members are formed into a cylindrical shape and overlapped inside and outside.
Outer porous tube and inner porous tube
The gas and the liquid processing liquid are supplied from the inner peripheral surface and
This is to discharge the foaming processing liquid from the outer peripheral surface of the perforated cylinder.
And a foaming processing liquid discharging device. Foam processing of this configuration
In the liquid discharge device, gas and liquid are
Pressure and the mixing ratio with the machining fluid
Supplied to the inner peripheral surface of the perforated cylinder and foamed in the outer perforated cylinder
It is made into a liquid and discharged from its outer peripheral surface. So outside
Small uneven discharge of foaming fluid on the outer peripheral surface of the side perforated cylinder
To supply a processing fluid with a high gas content to the processing tool
To prevent supercooling of the machining tool.
Can be up. (2) The supplied gas and the liquid processing liquid are
This is a foaming fluid discharge device that discharges as a foaming fluid.
Thus, the porous member has a cylindrical shape, the cylindrical porous member
The gas and the liquid processing liquid are supplied from the inner peripheral surface and
That discharges a foaming processing liquid from the surface
Pressure on the inner peripheral surface of the cylindrical porous member inside the cylindrical porous member.
A baffle plate for equalizing the force and the supply amount of the machining liquid is provided.
A foaming processing liquid discharge device characterized by being performed. This configuration
In the foaming liquid discharge device, the inside of the cylindrical porous member is
By the provided baffle plate, the inner peripheral surface of the cylindrical porous member
Since the pressure and the supply amount of machining fluid are equalized,
The foaming processing liquid is discharged from the outer peripheral surface of the member with less unevenness.
As a result, a foaming fluid with a high gas content is supplied to the machining tool.
It is easy to supply
Can be up. (3) The supplied gas and the liquid processing liquid are separated by a porous member.
Foam processing liquid ejection apparatus der to output discharge failure in the working fluid Riawajo
Thus, the porous member has a cylindrical shape, the cylindrical porous member
The gas and the liquid processing liquid are supplied from the inner peripheral surface and
That discharges a foaming processing liquid from the surface
Inside the porous member, the inner space of the cylindrical porous member,
Along the inner peripheral surface of the cylindrical porous member,
The dividing member that divides into multiple spaces extending parallel to the center line
An apparatus for discharging a foamed working liquid, wherein the apparatus is provided. Main structure
In the apparatus for discharging a foamed working fluid, the inside of the cylindrical porous member is
Due to the split member provided on the side, the space inside the cylindrical porous member is
The space between the cylindrical porous member and the inner peripheral surface of the cylindrical porous member
It is divided into a plurality of spaces extending parallel to the center line of the member.
Therefore, gas and liquid processing of these multiple spaces
If the mixture with the liquid is supplied uniformly, that of the cylindrical porous member
From the outer peripheral surface of the part corresponding to multiple spaces
The working liquid is discharged. Therefore, for machining tools
It is easy to supply foamed processing fluid with a large gas content.
This improves the supercooling prevention of the machining tool.
You.

According to the present invention, the following components are further provided.
Foam-like working fluid ejectors are obtained, in which
In a cylindrical porous member that discharges a foaming processing liquid from the surface side,
The disadvantages of waste liquid which are likely to be wasted are reduced. (4) The foaming processing liquid discharge device according to the above (1) to (3).
Outer peripheral surface including at least the lower part of the cylindrical porous member in the position
Cover with a gap in between, and the cover
Discharge of foamed working fluid with a recovery path for recovering used working fluid
apparatus. In the foaming processing liquid discharge device having this configuration, the porous portion
From the bottom of the material, a foamy processing liquid or liquid
Even if working fluid is discharged, they are received by the cover and collected
Collected by road. Supplied to machining tools and workpieces
Is collected before processing,
Etc. are not included. Good for improving the supercooling prevention of machining tools
Recovers ineffective machining fluid before it is supplied around the machining tool
It is possible to use a machining fluid that does not contain chips, etc.
The effect of being able to reuse as it is is obtained. (5) A figure in which the cylindrical porous member has a center line extending substantially horizontally.
And the cover part has a spiral cross section.
A spiral extending parallel to the center line of the cylindrical porous member
And a radius of the spiral tubular member.
The smallest radius end which is the smallest side of the cylindrical porous portion is
Contact the outer peripheral surface of the material and
Is adjacent to the lower part of the cylindrical porous member.
To function as the collecting section,
Guides the foamed working fluid discharged from the outer peripheral surface of the hole
Discharge from the discharge port formed at the largest radius end with the largest diameter
(4) The apparatus for discharging a foamed working liquid according to item (4). Foam of this configuration
The machining fluid discharge device is composed of a spiral tubular member
Cover portion is discharged from the outer peripheral surface of the lower portion of the cylindrical porous member.
Foam or liquid processing fluid with low gas output
It functions as a collection unit for receiving and collecting
Collect the foamed working fluid discharged from the outer peripheral surface of the porous member and plan
And discharge from the discharge port formed at the maximum radius end
I do. Therefore, it is effective for improving the supercooling prevention of machining tools
The non-working fluid before it is supplied around the machining tool
And concentrate the foaming fluid to the desired location
Effect it is possible to fed is Ru obtained.

According to the present invention, furthermore,
Foamed working fluid ejection devices are obtained, in which
Discharge from the cylindrical porous member that discharges the foaming processing liquid from the surface side
The disadvantage that unevenness is likely to occur is reduced. (6) The supplied gas and the liquid processing liquid are separated by the porous member.
This is a foaming fluid discharge device that discharges as a foaming fluid.
Therefore, the porous members are formed into a cylindrical shape and overlapped inside and outside.
Outer porous tube and inner porous tube
The gas and the liquid processing fluid are supplied from the outer peripheral surface and
It is intended to discharge a foaming processing liquid from the inner peripheral surface of the perforated cylinder.
And a foaming processing liquid discharging device. Foam processing of this configuration
In the liquid discharge device, gas and liquid are
The average pressure and mixing ratio with the machining fluid
Supplied to the outer peripheral surface of the perforated cylinder, and foamed in the inner perforated cylinder
It is made into a liquid and discharged from the inner peripheral surface thereof. Therefore,
Small uneven discharge of foaming liquid on the inner peripheral surface of side porous cylinder
To supply a processing fluid with a high gas content to the processing tool
To prevent supercooling of the machining tool.
Can be up. (7) The supplied gas and the liquid processing liquid are separated by the porous member.
This is a foaming fluid discharge device that discharges as a foaming fluid.
Thus, the porous member has a bottomed cylindrical shape, and
The gas and the liquid processing liquid are supplied from the outer peripheral surface of the hole member.
And discharges the foaming working fluid from the inner peripheral surface.
In the center of the bottom of the bottomed tubular porous member,
Central hole for discharging gas toward the open end of the porous member
Is formed, and its open end is closed by a perforated plate.
Is discharged from the inner peripheral surface of the bottomed tubular porous member.
Foamed working fluid is mixed with gas discharged from the center hole
Foaming characterized by being discharged to the outside after passing through
Liquid ejection device. In the foaming processing liquid ejection device of this configuration,
Foamed working fluid discharged from the inner peripheral surface of bottomed tubular porous member
Is a cylindrical porous member with bottom due to the gas discharged from the center hole.
Is moved toward the open end of the
Uniform foaming through the perforated plate and containing more gas
It is a working liquid.

According to the present invention, there is further provided a foamed material having the following structure:
A working fluid discharge device is obtained, in which the inner peripheral surface and the outer
Cylindrical pipe that discharges the foaming processing fluid from either one of the peripheral surface
The disadvantage that uneven discharge tends to occur in the hole member is reduced.
You. (8) The supplied gas and the liquid processing liquid are
This is a foaming fluid discharge device that discharges as a foaming fluid.
Thus, the porous member has a cylindrical shape, and the cylindrical porous portion
Processing of the gas and liquid from one of the outer and inner peripheral surfaces of the material
Liquid, and foamed from the other of the outer and inner peripheral surfaces
For discharging a liquid, and the cylindrical porous member
Is rotated about the center line of the cylindrical porous member.
A foaming processing liquid discharge device comprising a rotating device.
Place. In the foaming processing liquid discharging apparatus of this configuration, the cylindrical
Since the hole member is rotated, the processing liquid is turned into a cylindrical porous member.
Is uniformly supplied to the entire periphery of the cylindrical porous member.
Discharges foaming processing liquid with low gas content from
Good avoidance. Therefore, to prevent supercooling of machining tools
Fluid that is not effective in improving workability is supplied around the machining tool
And provide a uniform foaming liquid with a large gas content.
It becomes easy to supply. (9) The rotating device is supplied to the cylindrical porous member.
Equipped with a rotary drive source that is rotated by gas
(8) The apparatus for discharging a foamed working liquid according to the above (8). Foam processing of this configuration
In a liquid ejection device, a cylindrical porous member is supplied to it.
Rotating device equipped with a rotary drive source for rotating the gas
Rotating the cylindrical porous member.
There is no need to supply energy externally to
When the foaming fluid is discharged, the cylindrical porous member is automatically
It is convenient to be rotated.

[0016]

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A foaming working liquid generating apparatus provided with a foaming working liquid discharge device which is an embodiment common to the first and second inventions will be described in detail with reference to the drawings. In FIG. 4, a processing liquid 12 is stored in a processing liquid tank 10. This working fluid 12
Is an easily defoamable foam obtained by removing an antifoaming agent from a normal water-soluble processing liquid. The working fluid 12 is pumped up by a pump 14 and supplied to a pressurized tank 16. Pressurized tank 1
The height of the machining liquid level in 6 is detected by a liquid level sensor 18, and the detection result is supplied to the control device 20. The control device 20 controls the pump 14 based on the detection result, and keeps the height of the working fluid level in the pressurized tank 16 within a predetermined constant height range.

A cylinder 30 is connected to an upper portion of the pressurizing tank 16 by a pressurizing passage 28 provided with a regulator 26. Nitrogen 31 is stored at a high pressure in the cylinder 30 and is adjusted to an appropriate pressure by the regulator 26 and supplied to the pressurized tank 16. As a result, the pressurized tank 1
6, the working fluid 12 is sent to the working fluid supply passage 32 by pressure.
The liquid is supplied to a foaming processing liquid discharge device 36 via a regulator 34. The cylinder 30 is also connected to the machining liquid supply passage 32 by a gas supply passage 38.
8 is provided with a regulator 40. Therefore, the processing liquid 12 and the nitrogen 3
1 (hereinafter abbreviated as a mixture).

As shown in FIGS. 1 and 2, the foaming processing liquid discharge device 36 includes a nozzle portion 50 and a cover portion 52. The nozzle part 50 includes a main body 53 and two perforated cylinders 54 and 5.
5 is provided. The main body 53 is provided with a connection portion 56 for connecting to the processing liquid supply passage 32 and a discharge port 58 which is expanded from the rear to the front. A perforated cylinder 54 is fixed to the outer peripheral portion of the discharge port 58. The perforated tube 55 is fitted in contact with the inner side surface 60 of the perforated tube 54.

The perforated cylinders 54 and 55 have a bottomed cylindrical shape. In this embodiment, the porous cylinder 54 is made of iron and has an area ratio of holes to a surface area (hereinafter, referred to as an opening ratio) of 5.
The porous tube 55 is made of urethane foam and has an average pore diameter and an opening ratio larger than those of the porous tube 54.

A central hole 64 is formed in the center of the perforated cylinder 55 so as to communicate with the processing liquid supply passage 32 and extend in the axial direction. The mixture supplied from the processing liquid supply passage 32 to the foaming processing liquid discharge device 36 is supplied to the inner side surface 60 of the porous cylinder 54 through the center hole 64 and the porous cylinder 55, and becomes a foaming processing liquid to form the outer surface 65. Is discharged from.

The pressure and mixture ratio of the mixture on the inner surface 60 of the perforated cylinder 54 are made uniform by the presence of the perforated cylinder 55. When the perforated cylinder 55 is provided inside the perforated cylinder 54, the flow direction of the mixture is less directional than the case where the flow of the mixture directly collides with the inner surface 60 of the perforated cylinder 54, and the pressure on the inner surface 60 The distribution becomes uniform. The perforated cylinder 55
Is thicker than the perforated cylinder 54, the flow velocity and the mixing ratio of the mixture are sufficiently averaged in the perforated cylinder 55, and the pressure and the mixing ratio of the mixture on the inner surface 60 of the perforated cylinder 54 become uniform. . Moreover, the perforated cylinder 55 is
Since the average pore diameter and the opening ratio are larger than those of Example No. 4, the pressure loss can be relatively small. The shape of the center hole 64,
Since the size also affects the uniformity of the pressure and mixture ratio of the mixture on the inner surface 60 of the perforated cylinder 54, it is desirable to determine an appropriate shape and size by trial and error.

In the present embodiment, the porous cylinder 55 is made of urethane foam because the pore diameter of the hole 62 of the urethane foam schematically shown in FIG. 3 is a size suitable for functioning as a uniforming means. Because it is. If the pore diameter of the porous cylinder 55 is too small, the pressure loss in the porous cylinder 55 becomes large, and if the pore diameter is too large, the mixture cannot be dispersed well. Is a size appropriate to avoid these problems.

Most of the outer surface 65 of the perforated cylinder 54 is covered by the cover 52. The cover portion 52 is formed by extending a cylindrical member having a spiral cross section in a direction parallel to the axial direction. The base end portion is in contact with the lower portion of the outer surface 65 of the porous tube 54, and the intermediate portion is the lower portion of the porous tube 54. Collecting portion 66 that covers the outer surface 65 away from the outer peripheral surface 65, and covers most of the outer surface 65 continuously with the collecting portion 66, and the free end extends upward in the connecting direction of a circle concentric with the outer peripheral surface 65. A guide portion 68 is provided, and an opening 70 is formed between the free end of the guide portion 68 and the outer surface 65 of the porous tube 54. The foamed processing liquid discharged from the outer surface 65 in a direction different from the direction of the opening 70 moves along the inner peripheral surface of the cover 52 and is discharged from the opening 70.

The bottom surface of the collecting portion 66 is slightly inclined in the axial direction, and an opening 7 is formed at the lowermost end of the inclined bottom surface.
2 is formed and connected to a machining fluid discharge passage 74 (see FIG. 4) as a recovery passage.

The machining liquid discharge passage 74 is provided with a defoaming tank 76.
And is connected to the machining fluid tank 10 through The defoaming tank 76 is located at a position where the hole 78 is formed at the bottom and a position where the hole 78 is always closed. And a float 82 that can be raised to the maximum. Since the collected working fluid contains a large amount of air bubbles, if it is returned directly to the working fluid tank 10, the working fluid tank 10 may be filled with bubbles. In order to avoid this, only the working fluid near the bottom of the tank 80 is returned to the working fluid tank 10 by removing bubbles from the collected working fluid.

In the working fluid generating apparatus configured as described above, when the mixture is supplied to the foaming working fluid discharge device 36, the mixture is supplied to the inner side surface 60 of the porous cylinder 54 via the porous cylinder 55. The pressure and the mixing ratio in the perforated cylinder 55 are averaged, and the pressure and the supply amount to the inner surface 60 are made uniform. The mixture supplied to the inner side surface 60 is made into a foamed processing liquid by the perforated cylinder 54, and is discharged from the outer side surface 65.
The discharge pressure of the foamed processing liquid discharged from the outer surface 65 is substantially uniform over the entire outer surface 65 as shown in FIG.

The supply pressure of the mixture from the discharge port 58 is 3 kg.
/ cm ² , the discharge volume of the foamed processing liquid discharged from the entire outer surface 65 of the perforated cylinder 54 was 50 l / min when the perforated cylinder 55 was not provided. , It was 100 liter / min. By arranging the perforated cylinder 55 in this way, the perforated cylinder 5
5 has a larger volume discharged from the surface. That is,
The discharged gas is effectively used for forming bubbles, and a foaming processing liquid having a high gas content is discharged.

The foaming fluid discharged from the outer surface 65 is discharged from the opening 70 along the guide portion 68, but the foaming fluid having a small gas content that is not released from the opening 70 is It is collected by the collection unit 66 and returned to the processing liquid tank 10 via the processing liquid discharge passage 74 and the defoaming tank 76. Since the collected foamed working liquid does not contain chips or the like, it can be reused without removing chips or the like.

As described above, according to the foaming processing liquid discharge device 36 of the present embodiment, the pressure to the inner side surface 60 of the porous tube 54 and the supply amount of the processing liquid can be made uniform. Therefore, the discharge unevenness of the foaming processing liquid can be reduced over the entire outer surface 65. Therefore, the foaming working fluid discharge device 36 makes it easy to supply a foaming working fluid containing a large amount of gas to the working tool, thereby improving the supercooling prevention of the working tool.

Further, since the cover portion 52 is provided, the foaming working liquid can be satisfactorily supplied onto a predetermined surface of a working tool or a workpiece. Further, the foaming processing liquid having a small gas content can be satisfactorily recovered by the recovery unit 66, and waste of the processing liquid 12 can be reduced. Further, in the present foaming processing liquid generating apparatus, since the collected foaming processing liquid is returned to the tank 10 after removing the bubbles in the defoaming tank 76, the tank 10 is filled with the bubbles. Is avoided.

Although nitrogen 31 is used as a gas in the above-mentioned working fluid generating apparatus, another gas may be used instead of nitrogen 31. For example, if an inert gas such as an argon gas is supplied, as described in Japanese Patent Application No. 4-162157 filed by the present applicant, the rust-preventing effect of the workpiece and the durability of the working tool are obtained. The effect of improving the properties is obtained. Further, the defoaming tank 76 may be provided with an electromagnetic valve. When the amount of the foamed working fluid stored in the tank 80 becomes equal to or more than the set amount, the solenoid valve is switched to the open state.

Further, the materials, pore diameters, aperture ratios, shapes, etc. of the porous cylinders 54 and 55 in the foaming processing liquid discharging device 36 may be different from those in the above embodiment.

Although the cover 52 has the collecting section 66 and the guide section 68, it is not indispensable that both are provided, and only the collecting section 90 may be provided as shown in FIGS. The collecting part 90 is provided on the outer surface 6 at the lower part of the perforated cylinder 54.
5, an opening 92 is formed at one end in the axial direction and communicates with the machining fluid discharge passage 74. In this embodiment, the foaming processing liquid is discharged from the entire outer surface 65 of the perforated cylinder 54, but the gaseous processing liquid discharged from the lower part of the outer surface 65 and having a low gas content is collected by the collection unit 90. Is done.

FIGS. 7 to 11 show another embodiment of the homogenizing means of the foaming processing liquid discharging apparatus which is different from that in the above-mentioned embodiment. The description of the part is omitted. In FIG.
100 is a nozzle part, 102 is a nozzle part rotating device. The nozzle unit 100 is the same as the above-described embodiment, but the connection unit 56 is attached to the main body 110 of the nozzle unit rotating device 102 via bearings 104 and 106 so as to be relatively rotatable. The nozzle unit rotating device 102 includes a main body 1
A rotary motor 114 and a speed reducer 116 are provided in series in 10, and the mixture and the nitrogen 31 are separately supplied. The rotation motor 114 is configured to be rotated by the nitrogen 31 supplied to the nozzle unit 100.

When the nitrogen 31 is supplied to the rotary motor 114, the rotary motor 114 is rotated.
Is transmitted to On the other hand, when the nitrogen 31 and the mixture are supplied to the nozzle unit 100, the porous cylinder
4 from the outer surface 65. In this case, since the nozzle portion 100 is rotated, the processing liquid is
4 is uniformly supplied to the entire periphery, and the discharge of the foaming processing liquid having a low gas content from the lower portion of the porous cylinder 54 is well avoided. In addition, the discharge unevenness of the foaming processing liquid on the outer surface of the porous cylinder 54 is reduced. Furthermore, the rotation motor 1
Since the nozzle 14 is rotated by the nitrogen 31 supplied to the nozzle part 100, the nozzle part 100 is automatically rotated at the time of discharging the foaming processing liquid, which is convenient. In this embodiment, the rotary motor 114, the bearings 104 and 106, and the speed reducer 116 together with the perforated cylinder 55 constitute a uniformizing means.

Note that the rotary motor 114 can be an electric motor. Further, the porous tube 55 can be omitted.

In FIGS. 8 and 9, a baffle plate 154 as a uniforming means is provided inside a bottomed cylindrical porous cylinder 152 of the nozzle portion 150. The baffle plate 154 has a hollow conical shape, and three stays 155 are attached to an outer peripheral surface thereof. The baffle plate 154 has three stays 155 of the perforated cylinder 152 in a state where the center line of the cone is the same as the center line of the nozzle portion 150 and the vertex 156 of the cone is located rearward (on the discharge port 158 side). The inner surface 162 is fitted and fixed.

The mixture discharged from the discharge port 158 is applied along the outer peripheral surface of the baffle plate 154 to the inner surface 1 of the perforated cylinder 152.
62. Therefore, the pressure to the inner side surface 162 and the supply amount of the liquid processing liquid are made uniform, and the discharge unevenness of the foamy processing liquid over the entire outer surface 164 of the porous cylinder 152 is reduced. Note that the shape, fixing position, and the like of the baffle 154 are not limited to the present embodiment, but can be determined by thinking and error.
For example, when the center line of the baffle plate 154 is decentered downward from the center line of the nozzle portion 150, or when the apex 156 of the cone is inclined so as to be lowered, the discharge unevenness of the foaming processing liquid at the upper and lower portions of the nozzle 150 is reduced. Is reduced.

Further, in FIGS. 10 and 11, a dividing member 172 as a uniforming means is disposed inside the bottomed cylindrical porous cylinder 171 of the nozzle portion 170. The dividing member 172 has a shape in which four flat plates 174 extending in the axial direction are fixed radially at a distance of 90 degrees from each other. This flat plate 174 is fitted on the inner peripheral surface of the perforated cylinder 54. When the mixture is discharged from the discharge port 176, the mixture is divided into four equal parts by the dividing member 172, and the porous cylinder 171 is formed.
Is supplied to the inner side surface 178 of the rim. Therefore, the inner surface 178
Pressure and the amount of liquid processing fluid supplied are made uniform,
The discharge unevenness of the foaming processing liquid discharged from the outer surface 180 of the base 71 is reduced. In the present embodiment, the number of the flat plates 174 included in the dividing member 172 is four, but may be three or less or five or more. Further, if the entire nozzle section 170 is rotated, it is possible to further reduce the discharge unevenness.

In the first invention, the cover in each of the above embodiments can be omitted. Further, in each of the above embodiments, the foaming processing liquid is discharged from the entire outer surface of the perforated cylinder, and is supplied to a relatively wide range between the processing tool and the workpiece. May be supplied. In particular, the processing tool is fixed,
When the workpiece is rotated, it is difficult to keep the foaming fluid on the surface of the workpiece, and therefore, it is necessary to supply the foaming fluid intensively and continuously.

12 and 13, the main body 202 of the nozzle portion 200 has a generally cylindrical shape with a bottom. A central hole 204 is provided at the center of the bottom, and a plurality of holes 2006 are provided at the outer periphery. Are formed side by side in a ring. An annular cover 208 is attached to an edge of the cylindrical portion, and an opening 210 is formed at the center of the cover 208. Center hole 20
4 is connected to a nitrogen supply passage, and a plurality of holes 206 are respectively connected to a mixture supply passage. The opening of the hole 206 is a discharge port 211 of the mixture.

A porous cylinder 212 is provided on the inner peripheral surface of the main body 202, and the porous cylinder 21 is disposed on the inner peripheral surface 216 of the porous cylinder 212.
4 (in the present embodiment, the perforated cylinder 2
14 is an inner surface referred to in the claims). The inner peripheral surface 216 is expanded from the rear to the front, and the perforated cylinder 214 is fitted to the tapered inner surface 216. The average pore diameter and the aperture ratio of the porous tube 212 are made larger than those of the porous tube 214. Discharge port 21 of perforated cylinder 212
1, a notch 220 extending in the axial direction is formed, and the notch 220 and the main body 202 form a chamber 221. The effective thickness of the porous cylinder 212 until the mixture reaches the outer peripheral inner surface 218 is made uniform by the chamber 221, and the pressure of the outer inner surface 218 and the supply amount of the liquid processing liquid are made uniform.

In the present embodiment, the mixture is
1 to the chamber 221, through the perforated cylinder 212, to the inner peripheral surface 218 of the perforated cylinder 214. On the outer peripheral side inner surface 218, the pressure and the supply amount of the liquid processing liquid are substantially uniform. Therefore, the discharge unevenness of the foaming processing liquid is reduced over the entire inner peripheral outer surface 222 of the porous cylinder 214. Further, the foaming processing liquid is pushed forward by the nitrogen discharged from the discharge port 224 of the hole 204, is discharged from the opening 210, and can supply the foaming processing liquid intensively. In this embodiment, the perforated cylinder 212 in which the notch 220 is formed serves as a uniforming means.

14 and 15, the nozzle 2
30 has a bottomed cylindrical shape including a bottom portion 234 and a cylindrical portion 236, and has a center hole 238 in the bottom portion 234.
Are formed and connected to the connection portion 239. Connection part 2
Inside the tube 39 is a tube 240 whose outer diameter is smaller than its inner diameter.
Are arranged. Tube 240 is supplied with nitrogen 31,
The mixture is supplied to the gap 242 between the inner peripheral surface of the connection portion 239 and the outer peripheral surface of the tube 240. Further, a circular perforated plate 246 supported by an annular plate 244 is attached to an end of the cylindrical portion 236 of the main body 232. A perforated tube 250 is provided on the inner peripheral side of the tube portion 236 with a gap 248 therebetween, with one end in the axial direction abutting on the plate 244. The average pore diameter and aperture ratio of the perforated cylinder 250 are determined by the perforated plate 2
Greater than those of 46. Also, the gap 248 and the gap 24
2 are communicated with each other.

The mixture supplied from the gap 242 is converted into a foaming liquid by the perforated cylinder 250 and supplied to the inner surface 252. The foamed processing liquid is pushed forward by the nitrogen 31 supplied from the pipe 240 and supplied to the inner surface 254 of the perforated plate 246. At the inner surface 254 of the perforated plate 246, the pressure and the supply amount of the liquid processing liquid are made uniform, and the perforated plate 246 forms a finer and uniform foamed processing liquid, which is discharged from the outer surface 256. In the present embodiment, the gap 248 and the perforated cylinder 250 are equalizing means. Further, if the gap 248 makes the pressure of the mixture supplied to the outer peripheral surface of the perforated cylinder 250, the supply amount of the processing liquid, and the like uniform, the perforated plate 246 is not necessarily required.

The embodiments shown in FIGS. 12 and 13 and FIGS.
Also in this embodiment, it is effective to rotate the nozzle units 200 and 230 in order to eliminate uneven discharge.

Although not specifically exemplified, the structure of the uniformizing means, the structure of the nozzle portion, etc. are not limited to those in the above-described embodiment, and may be modified by other persons without departing from the scope of the claims. The present invention can be implemented in a form in which various modifications and improvements are made based on knowledge.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a foaming working liquid ejection device that is an embodiment common to the first invention and the second invention.

FIG. 2 is an AA cross-sectional view of the foaming processing liquid discharging device.

FIG. 3 is a partially enlarged view of a perforated cylinder as a uniforming means of the foaming processing liquid discharging device.

FIG. 4 is a system diagram of a working fluid generation device including the foaming working fluid discharge device.

FIG. 5 is a cross-sectional view of a foaming working liquid ejection device which is another embodiment common to the first invention and the second invention.

FIG. 6 is a sectional view taken along the line BB of the apparatus for discharging a foamed working liquid.

FIG. 7 is a cross-sectional view of a foaming working liquid ejection device which is still another embodiment common to the first invention and the second invention.

FIG. 8 is a cross-sectional view of a foaming working liquid ejection device which is still another embodiment common to the first invention and the second invention.

FIG. 9 is a cross-sectional view of the foaming processing liquid discharging device, taken along the line CC.

FIG. 10 is a cross-sectional view of a foaming working liquid ejection device which is still another embodiment common to the first invention and the second invention.

FIG. 11 is a DD sectional view of the foaming processing liquid discharging device.

FIG. 12 is a cross-sectional view of a foaming working liquid ejection device according to another embodiment of the first invention.

FIG. 13 is an EE cross-sectional view of the foaming processing liquid discharging device.

FIG. 14 is a cross-sectional view of a foaming working liquid ejection device according to still another embodiment of the first invention.

FIG. 15 is a sectional view taken along the line FF of the apparatus for discharging a foamed working liquid.

FIG. 16 is a cross-sectional view of a conventional foaming processing liquid discharging device.

FIG. 17 is a diagram showing a relationship between a supply pressure of a mixture and a discharge volume of a processing liquid discharged from a porous member.

FIG. 18 is a diagram showing a relationship between a discharge volume of a processing liquid discharged from a porous member during milling and a change in the temperature of a cutting edge during one rotation of a processing tool.

FIG. 19 is a plan view of the milling apparatus.

FIG. 20 is a front view of the milling apparatus.

FIG. 21 is an enlarged view of a periphery of a cutting tool of the milling apparatus.

[Explanation of symbols]

36 Foaming working fluid discharge device 50, 100, 150, 170, 200, 230 Nozzle part 52 Cover part 54, 152, 171, 214 Porous cylinder 55, 212, 250 Porous cylinder 66, 90 Recovery part 68 Guide part 74 Working fluid Collection tube 154 Baffle plate 172 Dividing member 246 Perforated plate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-104393 (JP, A) Jikken 63-13810 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) B23Q 11/10 B05B 1/02 101 B65D 47/06

Claims (9)

(57) [Claims] 1. A foaming processing liquid discharge device for discharging a supplied gas and a liquid processing liquid into a foaming processing liquid by a porous member , wherein the porous member has a cylindrical shape, and has a cylindrical shape. Outside layered on
The inner peripheral surface of the inner perforated cylinder includes a side perforated cylinder and an inner perforated cylinder.
Is supplied with the gas and the liquid processing fluid from
A foaming working fluid discharging device for discharging a foaming working fluid from an outer peripheral surface of the device. 2. The gas supply and the liquid processing liquid are perforated.
Foamed working fluid discharge to discharge as foamed working fluid by member
A device, The porous member has a cylindrical shape, and an inner peripheral surface of the cylindrical porous member.
Is supplied with the gas and the liquid processing fluid from the outer peripheral surface.
It discharges a foaming processing liquid and has a cylindrical porous structure.
Inside the member, the pressure on the inner peripheral surface of the cylindrical porous member and the front
A baffle plate is provided to make the supply amount of the working fluid uniform.
A foaming processing liquid discharging device characterized by the above-mentioned. 3. A method in which the supplied gas and the liquid processing liquid are porous.
Foamed working fluid discharge to discharge as foamed working fluid by member
A device, The porous member has a cylindrical shape, and an inner peripheral surface of the cylindrical porous member.
Is supplied with the gas and the liquid processing fluid from the outer peripheral surface.
It discharges a foaming processing liquid and has a cylindrical porous structure.
Inside the member, the inside space of the tubular porous member is
Center line of the cylindrical porous member along the inner peripheral surface of the cylindrical porous member
A dividing member for dividing into a plurality of spaces extending in parallel to
A foaming processing liquid discharging device, characterized in that: A cover portion for covering at a clearance an outer peripheral surface including at least a lower portion of claim 4, wherein the tubular porous member, further comprising a recovery passage for recovering the machining fluid that is received in the cover portion
The foaming processing liquid discharging device according to any one of claims 1 to 3, characterized in that: 5. The cylindrical porous member has a center line substantially horizontal.
The cover portion has a cross-sectional shape.
Spirally extend parallel to the center line of the cylindrical porous member
A spiral cylindrical member,
The minimum radius end, which is the end with the smallest radius of the material, is
Contact the outer peripheral surface of the porous member and minimize its radius
The lower part adjacent to the end is the lower part of the cylindrical porous member.
The gap Covers at intervals and functions as the collection unit
Then, the foamed working fluid discharged from the outer peripheral surface of the cylindrical porous member is
The discharge formed at the largest radius end with the largest radius guided
The foaming processing liquid discharging device according to claim 4, which discharges from a mouth. 6. A method in which the supplied gas and the liquid processing liquid are porous.
Foamed working fluid discharge to discharge as foamed working fluid by member
A device, The outer member in which the porous members are formed into a tubular shape and are overlapped inside and outside
Outer perimeter of outer perforated cylinder with side perforated cylinder and inner perforated cylinder
The gas and the liquid processing liquid are supplied from the
Discharges foaming liquid from the inner peripheral surface of the
The foaming processing liquid discharge device to be characterized. 7. A method of making the supplied gas and the liquid processing liquid porous.
Foamed working fluid discharge to discharge as foamed working fluid by member
A device, The porous member has a cylindrical shape with a bottom, and the cylindrical porous member with a bottom
The gas and the liquid processing liquid are supplied from the outer peripheral surface of the
It discharges foaming fluid from the peripheral surface and
The bottomed cylindrical porous part at the center of the bottom of the bottomed cylindrical porous member
A central hole is formed to discharge gas toward the open end of the material
And its open side end is closed by a perforated plate.
And a foam-like material discharged from the inner peripheral surface of the bottomed cylindrical porous member.
Working fluid passes through the perforated plate together with the gas discharged from the central hole
Discharge of foaming working fluid characterized by being discharged outside
apparatus. 8. A method in which the supplied gas and the liquid processing liquid are porous.
Foamed working fluid discharge to discharge as foamed working fluid by member
A device, The porous member has a cylindrical shape, and is provided outside the cylindrical porous member.
The gas and the liquid working fluid are separated from one of the peripheral surface and the inner peripheral surface.
Supplied and discharges foaming fluid from the other of the outer and inner peripheral surfaces.
And the cylindrical porous member is
A rotating device that rotates around the center line of a cylindrical porous member
A foaming processing liquid discharge device comprising: 9. The rotating device includes:
Equipped with a rotary drive source that is rotated by the supplied gas
The foaming liquid ejection according to claim 8, wherein
Output device.