JPH10337632A - Supply device of cutting liquid and cutting gas - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply cutting oil and cooling air for cutting to an oil path of a cutting tool such as a drill, etc., by providing a supply means of cutting liquid and a supply means of cutting gas. SOLUTION: Only cutting oil is supplied and its supply quantity is regulated by releasing a first stop valve 55, closing a second stop valve on the other hand and controlling opening of a first regulating valve 57. Additionally, only air is supplied and its supply quantity is regulated by closing the first stop valve 55, releasing the second stop valve 65 on the other hand and controlling opening of a second regulating valve 67. In the same way, cutting oil and air are simultaneously supplied by releasing both of the first and second stop valves 55, 65 and controlling opening of the first and second regulating valves 57, 67, and these supply quantity and mixing ratio are regulated. Consequently, at least one of cutting oil and air is properly supplied to a through hole 8 of a drill.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting fluid / cutting gas supply device. More specifically, the present invention relates to a valve unit that controls the supply of cutting oil and air to a so-called oil path formed on a sword tool such as a drill.

[0002]

2. Description of the Related Art In order to efficiently supply cutting oil to a workpiece to be machined, a drill having an oil path penetrating in the axial direction has been provided. In such a drill, there is an oil inlet at the free end of the shaft, and an oil outlet at the tip of the sword. The shaft of the drill is usually inserted into the lower end of the shank of the machine tool and fixed with a chuck. The cutting oil is supplied from inside the shank of the machine tool to the oil inlet of the shaft of the drill. A sealing member is provided between the shank and the shaft so that the cutting oil does not leak.

[0003]

A drill having an oil path can exhibit its original function only when it is applied to a machine tool provided with a shank having a structure capable of supplying cutting oil thereto. In other words, a machine tool with a shank that does not have a structure for supplying cutting oil cannot use a drill having an oil path. In a shank having a structure for supplying cutting oil, supply of cutting gas such as air to an oil path was not planned.

Accordingly, the present invention provides a cutting oil and a cooling air for cutting which are provided separately from a shank of a machine tool to an oil path of a sword such as a drill, and controls the flow rate thereof. It is an object of the present invention to provide a device capable of performing the following.

[0005]

The present invention has been made in view of the above-mentioned object. That is, the cutting fluid / cutting gas supply device according to the first invention of the present invention is provided with the first cutting fluid into which the cutting fluid is introduced.
An input port, a first output port through which the cutting fluid is output, a first communication path communicating the first input port with the first output port, and a first stop disposed in the first communication path A cutting fluid supply means comprising a valve and a first regulating valve for regulating a flow rate of the cutting fluid, a second input port for introducing a cutting gas, and a second output for outputting the cutting gas. Port, a second communication passage communicating the second input port with the second output port, a second stop valve disposed in the second communication passage, and a second adjustment valve for adjusting a flow rate of the cutting gas. And cutting gas supply means comprising:

The cutting fluid / cutting gas supply device configured as described above can supply one of the cutting fluid and the cutting gas to the oil path (through hole) of a sword tool such as a drill as needed. it can. That is, by releasing the first stop valve, closing the second stop valve, and adjusting the opening of the first control valve, it is possible to supply only the cutting oil and adjust the supply amount. Also, the first stop valve is closed, while the second stop valve is opened, and the second stop valve is opened.
By adjusting the opening of the control valve, it is possible to supply only the cutting gas and adjust the supply amount. Similarly, by opening both the first and second stop valves and adjusting the opening degrees of the first and second control valves, the cutting fluid and the cutting gas are simultaneously supplied, and the supply amounts and the mixing ratios thereof are adjusted. it can.

According to a second aspect of the present invention, there is provided a cutting fluid / cutting gas supply device having a first input port into which cutting fluid is introduced, a second input port into which cutting gas is introduced, and a cutting fluid and / or cutting gas. An output port from which the first input port and the output port communicate with each other;
A first adjusting valve that adjusts a flow rate of the cutting fluid disposed in the first communication path, a second communication path that communicates the second input port with the output port, and is disposed in the second communication path. A second control valve for adjusting the flow rate of the cutting gas, and a stop valve disposed immediately before the output port to stop the flow of the cutting fluid and the cutting gas.

According to the cutting fluid / cutting gas supply device configured as described above, only the cutting fluid is supplied by squeezing the second control valve, and the cutting fluid is controlled by adjusting the opening of the first control valve. Can be adjusted. On the other hand, only the cutting gas is supplied by squeezing the first control valve, and the supply amount of the cutting gas can be adjusted by adjusting the opening of the second control valve. By adjusting the opening degrees of the first and second control valves, the cutting fluid and the cutting gas can be simultaneously supplied, and the supply amounts and the mixing ratios thereof can be adjusted. When the cutting fluid and cutting gas are not supplied, close the stop valve.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Cutting fluids include common cutting oils, and cutting gases include air. Air cools the cutting part and increases cutting efficiency. Of course, these can be appropriately selected according to the processing object and purpose.

The first and second input ports, the first and second output ports, and the first and second communication passages are preferably formed in a single housing (body). It is also possible to form the first element and the second element constituting the cutting gas supply means in separate housings.

The first control valve and the first stop valve are not particularly limited as long as they can adjust and stop the flow rate of the cutting fluid, especially the cutting oil. Similarly, the second control valve and the second stop valve are not particularly limited as long as they can adjust and stop the flow rate of the cutting gas, particularly the air. Each can use a well-known thing.
The stop valve according to the second invention is not particularly limited as long as it can stop the flow of the cutting fluid and the cutting gas.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below.

(First Embodiment) FIG. 1 shows a cutting fluid of the present embodiment.
1 shows a drill 1 to which cutting fluid and cutting gas are supplied from a cutting gas supply device. The drill 1 includes a sword 2 and a shaft 3. The sword 2 has a spiral blade. Shaft 3
Has a small-diameter portion 4 which is a free end thereof, a large-diameter portion 5 following the small-diameter portion 4, and a flange portion 6. The small diameter portion 3 is a portion for connecting to a shank of a machine tool, and is held by a holding device such as a chuck. The large diameter portion 5 includes a cylinder 20 described later.
Is exteriorized. A groove 7 that is continuous in the circumferential direction is formed in the large-diameter portion 5, and an opening 9 of a through hole 8 is opened at the bottom surface. The groove 7 preferably has a U-shaped cross section. That is,
It is preferable that the bottom surface of the groove has an inverted meniscus shape. This is because the cutting oil is efficiently injected into the opening 9.

FIG. 2 is a cross-sectional view of the portion indicated by the line II-II in FIG. 1, and as shown in FIG.
The opening 9 is formed in three places in the groove 7. The O-rings of the cylinder 20 are in sliding contact with the peripheral surfaces of the large diameter portion 5 that sandwich the groove 7. The flange portion 6 prevents the cylinder 20 from coming off.

FIG. 3 shows the reamer 10. This reamer 1
As for the drill 0, the cutting fluid and the cutting gas are supplied from the supply device for the cutting fluid and the cutting gas of the present embodiment, similarly to the drill 1. This reamer 1
0 is the same as the drill 1 except that the sword section 12 is different,
The same portions are denoted by the same reference numerals, and description thereof will be omitted.

The drill 1 of FIG. 1 is mounted on a cutting oil / air supply system 15 as shown in FIGS. The supply system 15 is generally constituted by a cylinder 20 and a valve unit 40 constituting an embodiment of the supply device for a cutting fluid and a cutting gas of the present invention.

As shown in FIG. 6, the cylinder 20 has two nozzle holes 23 and 24 formed in the peripheral wall, and nozzles 25 and 26 are screwed into the nozzle holes 23 and 24, respectively. In FIG. 6, for convenience, the nozzle holes 23, 24
Are shown as positions facing each other rotated by 180 degrees.
Actually, as shown in FIGS. 4 and 5, these two nozzle holes are at positions rotated by 90 degrees. A pair of bearings 27 and 28 are disposed on the inner peripheral surface of the cylinder 20 at the upper and lower open ends, and O-rings 29 and
Numerals 30 are provided, each of which is in sliding contact with the large diameter portion 5 of the shaft portion 3 of the drill 1. The lower end of the cylinder 20 abuts on the flange 6 of the drill 1, thereby causing the nozzles 25, 26
Are aligned with the grooves 7 of the shaft portion 3. Nozzle 2
The cutting oil supplied through the hole 5 temporarily accumulates in the groove 7 and is supplied from the opening 9 to the through hole 8 serving as an oil path. Even if the opening 9 and the nozzle 25 do not face each other with the rotation of the drill 1, the cutting oil accumulated in the groove 7 is always stably supplied to the opening 9. Air is supplied from the nozzle 26.

The body 41 of the valve unit 40 for supplying cutting oil and air has first and second input ports 43 and 4.
5 and first and second output ports 47 and 49.
The first input port 43 and the first output port 47 are communicated with each other through a first communication passage 51, and the cutting oil passes through them. The second input port 45 and the second output port 49 are connected to the second communication path 5.
3 and the air passes through them.

The first communication passage 51 is provided with a first stop valve 55 for stopping the supply of the cutting oil and a first flow control valve 57 for adjusting the flow rate of the cutting oil. The first input port 43 has an adapter 5 having a backflow prevention function.
9 is screwed. The backflow prevention function of the adapter 59 is performed by the compression coil spring 61 and the ball 63 in the adapter 59. Similarly, a second stop valve 65 for stopping the supply of air and a first flow rate control valve 67 for adjusting the flow rate of air are mounted in the second communication path 53. The second input port 45 has an adapter 6 having a backflow prevention function.
9 is screwed. The backflow prevention function of the adapter 69 is performed by the compression coil spring 71 and the ball 73 in the adapter 69.

An oil supply hose (not shown) is connected to the first input port 43. An air hose (not shown) is connected to the second input port 45. A first output adapter 75 is screwed into the first output port 47 and communicates with the first nozzle 25 via a nut 76. As a result, the cylinder 20 is fixed to the body 41 of the supply unit 40. A first output adapter 77 is screwed into the second output port 49 and communicates with the second nozzle 27 via a hose 79.

The body 41 has a slider portion 80 (shown in FIG. 5) which is slidably mounted on a support rod (not shown).
The body 41 and the cylinder 20 are fixed. Accordingly, the body 41 follows the vertical movement of the drill 1, that is, the movement of the cylinder 20 while being supported by the support rod.
Further, rotation of the cylinder 20 accompanying the drill 1 is prevented. The support bar is fixed to a base of the machine tool.
Further, the body 41 may be connected to a driving mechanism of the drill 1 so as to move in synchronization with the drill 1.

According to the apparatus of the embodiment configured as described above, even if the shank of the machine tool does not have a cutting oil and / or air supply mechanism, at least one of the cutting oil and the air is supplied from the supply unit 40 and the cylinder 20. Can be appropriately supplied to the through hole 8 of the drill 1. That is, by opening the first stop valve 55, closing the second stop valve 65, and adjusting the opening of the first adjustment valve 57, only the cutting oil can be supplied and the supply amount can be adjusted. Further, the first stop valve 55 is closed, while the second stop valve 65 is released, and the second control valve 67 is closed.
By adjusting the opening degree, only air can be supplied and the supply amount can be adjusted. Similarly, by opening both the first and second stop valves 55 and 65 and adjusting the openings of the first and second control valves 57 and 67, the cutting oil and the air are supplied simultaneously, and the supply amounts of these are supplied. And the mixing ratio can be adjusted.

The cutting oil and / or air supplied to the groove 7 in this manner does not leak in the vertical direction of the shaft portion 3 because it is sealed by the O-rings 29 and 30. Therefore, the gas is preferentially injected into the through hole 8 through the opening 9.

(Second Embodiment) FIG. 8 shows a cutting fluid / cutting gas supply system 115 employing a valve unit 140 which is a cutting fluid / cutting gas supply device of a second embodiment. In this embodiment, the same members as those in the previous embodiment are denoted by the same reference numerals, and the description thereof will be partially omitted. The supply system 115 generally includes a cylinder 120 and a valve unit 140 constituting an embodiment of the present invention.

The cylinder 120 has only one through-hole 23 on its peripheral wall as compared with that of the first embodiment, and the nozzle 25 is screwed into this. Valve unit 14
0 is different from that of the first embodiment in that the second output port 49 and the second stop valve 65 are omitted, and the second communication path 153 joins the first communication path 51.

The valve unit 14 configured as described above
According to 0, only the cutting oil is supplied by closing the second control valve 67 (and / or the supply of air to the second input port 45 is stopped), and the opening of the first control valve 57 is adjusted. The supply amount of cutting oil can be adjusted. At this time, the backflow of the cutting oil to the second input port 45 is prevented by the backflow prevention mechanisms 71 and 73 of the adapter 69. On the other hand, the first control valve 57 is closed (and / or
Alternatively, the supply of cutting oil to the first input port 43 is stopped) to supply only air, and the second adjustment valve 67
The amount of air supply can be adjusted by adjusting the degree of opening. At this time, the backflow of air to the first input port 43 is prevented by the backflow prevention mechanisms 61 and 63 of the adapter 59. By adjusting the opening of the first and second control valves 57 and 67, the cutting oil and the air can be supplied simultaneously, and the supply amount and the mixing ratio of these can be adjusted. When the cutting oil and air are not supplied, the stop valve 55 is closed.

The valve unit 140 of the second embodiment has a smaller number of parts than that of the first embodiment.
The assembling becomes easy and the manufacturing cost is reduced.

FIG. 9 shows an example in which the valve unit 140 of the second embodiment is used for a main shaft 241 having a three-jaw chuck 211.
Shown in FIG. 10 shows the main shaft 241, the three-jaw chuck 211, and the drill 201 separately. In FIG. 9, the same members as those in the second embodiment, that is, the cutting oil / air supply system 115 are denoted by the same reference numerals, and description thereof will be omitted.

The cutting device according to this use example has a feed system 11
5 (shown in FIG. 8), a drill 201, a chuck 211, an adapter 220 and a shank 240. The drill 201 includes a sword 202 and a shaft 203. Sword part 2
02 has a spiral blade. As shown in FIG. 10, a tapered surface 204 that is continuous in the circumferential direction is formed on the periphery of the free end of the shaft portion 203. A single groove 205 is formed on the top surface of the free end of the shaft portion 203. Reference numeral 206 in the figure denotes two oil paths.
The oil inlet of the oil path 206 is formed on the bottom surface of the groove 205.

The chuck 211 is a general-purpose chuck.
In this embodiment, a commercially available three-jaw chuck was used.

The adapter 220 includes a first cylindrical portion 221 having a thread groove formed on the outer peripheral surface thereof, and a second cylindrical portion 225 screwed to the first cylindrical portion 221. The inner surface of the lower end of the first cylindrical portion 221 is formed in a hexagonal hole. This hexagonal hole is the first cylindrical part 22
This is for inserting a hexagon wrench when screwing 1 into the female screw portion 253 of the shank 240. 2nd cylinder part 2
25 has an undercut portion, and the second cylindrical portion 22
9 is mounted on the first cylindrical portion 221, the first O-ring 231 (FIG. 9) is formed by the undercut portion and the lower end of the first cylindrical portion.
Is shown). This first O-ring 231 is
This is a member for taking a seal between the tapered surface 204 of No. 03 and the adapter 220. On the upper side of the second cylindrical portion 225, the second
The O-ring 233 is provided. This second O-ring 233
Is a member for taking a seal between the adapter 220 and the shank 240.

The shank 240 includes a first portion 241 and a second portion 251. The first portion 241 has a small diameter portion 241 followed by a large diameter portion 245 from its free end, and a flange portion 246. The small diameter portion 241 is a portion for connecting to a main shaft of a machine tool, and is held by a holding device such as a chuck. The cylinder 20 is mounted on the large diameter portion 245. A groove 247 that is continuous in the circumferential direction is formed in the large diameter portion 245, and an opening 249 of the through hole 248 is opened on the bottom surface. The cross-sectional shape of the groove 247 is preferably a U-shape. That is, it is preferable that the bottom surface of the groove has an inverted meniscus shape. This is because the cutting oil is efficiently injected into the opening 249. Second part 251 of shank 240
Has a female screw portion 253, and the first cylindrical portion 221 of the adapter 220 is screwed into the female screw portion 253.

By using the shank 240 of this usage example,
Even if the shank of the machine tool does not have a function of supplying cutting oil and / or air, oil and / or air can be supplied to the oil path of a conventional type of drill.

The present invention is not at all limited to the description of the above-described embodiments and examples. Various modifications are included in the present invention without departing from the scope of the claims and within the scope of those skilled in the art.

[Brief description of the drawings]

FIG. 1 is a front view of a drill to which cutting fluid and cutting gas are supplied from a cutting fluid / cutting gas supply device according to an embodiment.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a front view of a reamer supplied with a cutting fluid and a cutting gas from a supply device for a cutting fluid and a cutting gas according to the embodiment.

FIG. 4 is a front view of a supply system incorporating a cutting fluid / cutting gas supply device of the first embodiment.

FIG. 5 is a bottom view of the supply system shown in FIG. 4;

FIG. 6 is a cross-sectional view illustrating the configuration of the supply system shown in FIG.

FIG. 7 is a sectional view of a cylinder which is a component of the supply system shown in FIG. 4;

FIG. 8 is a cross-sectional view illustrating a configuration of a supply device according to a second embodiment.

FIG. 9 is a front view showing another example of use of the supply device of the second embodiment.

FIG. 10 is an exploded view of the cutting device of FIG. 9;

[Explanation of symbols]

 15, 115 Supply device 40, 140 Valve unit 41 Body 43, 45 Input port 47, 49 Output port 51, 53, 153 Communication path 55, 65 Stop valve

Claims (2)

[Claims] A first input port into which a cutting fluid is introduced;
A first output port through which the cutting fluid is output, a first communication path communicating the first input port with the first output port, a first stop valve disposed in the first communication path, and the cutting. A cutting fluid supply unit having a first regulating valve for regulating the flow rate of the fluid, a second input port into which the cutting gas is introduced, a second output port through which the cutting gas is output, A second communication passage communicating between the second input port and the second output port; a second stop valve disposed in the second communication passage; and a second adjustment valve for adjusting a flow rate of the cutting gas. A cutting fluid / cutting gas supply device, comprising cutting gas supply means. 2. A first input port into which a cutting fluid is introduced, a second input port into which a cutting gas is introduced, an output port through which a cutting fluid and / or a cutting gas is output, and the first input port and the first input port. A first communication passage communicating with an output port; and a first communication passage for adjusting a flow rate of the cutting fluid disposed in the first communication passage.
A control valve, a second communication path communicating the second input port with the output port, a second control valve for adjusting a flow rate of the cutting gas disposed in the second communication path, A supply device for a cutting fluid and a cutting gas, comprising: a stop valve arranged immediately before to stop the flow of the cutting fluid and the cutting gas.