JPH0985576A - Cutting fluid applying device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting fluid applying device capable of preventing cutting fluid from being stuck to a work, and capable of applying cutting fluid to only a cutting tool. SOLUTION: A cutting fluid applying device 1 is constituted of a cutting fluid supplying nozzle 10 provided in the position corresponding to a tap 2, and a cutting fluid supplying mechanism 20 for supplying cutting fluid to the nozzle 10. The cutting fluid supplying nozzle 10 is constituted of a resin tube 15, and a guide pipe 17 arranged near the tap 2 and for guiding the tip of the resin tube 15 so that the tip may be advanced and retreated toward the tap 2. Since the resin tube 15 can be advanced and retreated toward the tap 2 and the cutting fluid can be discharged by bringing the tip of the resin tube 15 into contact with the tap 2, the cutting fluid is applied only to the tap 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a cutting tool (cutting tool) with a cutting fluid when performing cutting such as threading (tapping), drilling (drilling), and reaming on a workpiece. TECHNICAL FIELD The present invention relates to a cutting fluid coating device for coating and a cutting fluid coating method using this device.

[0002]

2. Description of the Related Art Conventionally, during tap processing, cutting fluid such as cutting oil is applied to the tap in order to cool and lubricate the edge portion of the tap. Conventionally, this cutting fluid was applied directly to the taps using a brush, but there were problems that the work was complicated and it was difficult to increase the productivity because of the application work. A method has been used in which the cutting fluid is sprayed from a nozzle arranged away from the nozzle toward the tap and applied.

[0003]

However, when the cutting fluid is jetted from the nozzle and applied to the tap, it is difficult to apply the fluid only to the tap, and the cutting fluid spreads in the form of mist and adheres to the work or the like. There was a problem. Therefore, there is a problem in that the work must be washed after processing, the number of steps is increased, workability and productivity are reduced, and the cost is increased because the cleaning liquid is used. In addition, since the cutting fluid spreads in the form of mist, the rate of adhesion to the tap is reduced, and a large amount of cutting fluid is required. Such a problem is not limited to taps, and is the same when various cutting tools such as drills and reamers are used.

An object of the present invention is to provide a cutting fluid application device and a cutting fluid application method capable of preventing the cutting fluid from adhering to a work and applying the cutting fluid only to a cutting tool.

[0005]

A cutting fluid application device of the present invention is a cutting fluid application device for applying a cutting fluid to a cutting tool, and a cutting fluid supply nozzle provided at a position corresponding to the cutting tool, A cutting fluid supply mechanism for supplying cutting fluid to this nozzle is provided, and the cutting fluid supply nozzle is arranged near a resin tube and the cutting tool so that the tip end portion of the resin tube can be moved back and forth toward the cutting tool. A guide member for guiding is provided. Here, as the guide member, for example, a guide pipe or the like which is attached to a machine to which a cutting tool is attached and in which the resin tube is inserted can be used.

The cutting fluid application method of the present invention is a cutting fluid application method for applying a cutting fluid to a cutting tool, and is a guide for guiding a resin tube and a tip portion of the resin tube so as to be capable of advancing and retracting toward the cutting tool. A cutting fluid supply nozzle is provided with a member, and the cutting fluid is supplied to the nozzle by a cutting fluid supply mechanism in a state where the tip of the resin tube of the nozzle is brought into contact with a cutting tool through at least the cutting fluid discharged from the tip. Is supplied, and a cutting fluid is flown from the tip of the resin tube to apply the cutting fluid to the cutting tool. Here, the state in which the resin tube tip is brought into contact with the cutting tool via the cutting fluid discharged from at least the tip means a state in which the resin tube is brought into direct contact with the cutting tool, and one drop emitted from the resin tube tip. The state in which the resin tube tip is separated from the cutting tool by a distance that allows the cutting fluid to continue from the tube tip to the cutting tool due to surface tension or the like. Therefore, a state in which the tip of the resin tube and the cutting tool are separated is not included to the extent that a drop of liquid ejected from the tip of the resin tube does not adhere to the cutting tool until it is separated from the resin tube.

According to the present invention as described above, when the tip of the resin tube of the nozzle is brought into contact with a cutting tool such as a tap through a liquid and the cutting fluid is discharged from the cutting fluid supply mechanism through the resin tube of the nozzle, the cutting tool is cut. Cutting fluid is applied.
At this time, the resin tube is brought into contact with the cutting tool directly or via a liquid, and the cutting liquid is discharged from the tip (contact surface) of the cutting tool. It is applied only to the work and does not adhere to the work.
For this reason, the work cleaning process is not required, the number of processes is reduced, and workability and production efficiency are improved. Further, the number of steps is reduced, the cleaning liquid is not required, the adhesion rate of the cutting liquid to the cutting tool is increased, and the amount of the cutting liquid used is reduced, so that the production cost is reduced.

Further, since the resin tube constituting the nozzle is guided by the guide member, the position of the tube tip can be freely adjusted by advancing and retracting the resin tube tip toward the cutting tool, and the tube tip and the cutting tool can be adjusted. The interval between them can be freely and easily adjusted, and the tip of the resin tube can be brought into contact with the cutting tool or slightly separated so that the position can be easily set. Furthermore, since it is the resin tube that comes into contact with the cutting tool, the tip of the tube can be brought into contact while driving the cutting tool, for example, so that the nozzle can be brought into smooth contact with the cutting tool and cutting fluid application work can be performed. It can also be done efficiently.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a main part of the cutting fluid application device 1, and FIG. 2 shows a schematic diagram showing the entire configuration of the cutting fluid application device 1. The cutting fluid application device 1 includes a tap 2 which is a cutting tool for processing a screw hole in a work W.
A plurality of cutting fluid supply nozzles 10 arranged according to the number of
Cutting liquid supply mechanism 20 for supplying cutting liquid to this nozzle 10.
And

As shown in FIG. 2, the cutting fluid supply mechanism 20 uses compressed air for operation for opening and closing a container 21 for the cutting fluid and a valve provided in a flow path for supplying the cutting fluid to the nozzle 10. A controller 22 for controlling the supply pattern and supply amount from the source 22A, and a nozzle support device 30 to which the base end portion of the nozzle 10 is connected and supported,
A tube 23 for supplying cutting fluid from the storage container 21 to the nozzle support device 30, and a nozzle support device 30 from the controller 22.
And a tube 24 for supplying compressed air.

The nozzle supporting device 30 is provided with a main body 31, and a through hole 31A is formed in the center of the shaft of the main body 31 so as to penetrate in the axial direction, the central portion has a small diameter, and both ends have a large diameter. ing. A valve seat retainer 33 for holding and fixing the valve seat 32 and a connecting block 34 are screwed into a threaded portion formed on one end side of the through hole 31A on the nozzle 10 side.

On the other hand, a piston valve 35 having a valve body 35A fitted to the valve seat 32 is arranged on the other end side of the through hole 31A. At the other end of the piston valve 35, a nut 36 is screwed into the through hole 31A, and a flow rate adjusting bolt 37 is screwed into the nut 36.

The other end of the piston valve 35 is fitted into a hole formed in the central axis of the flow rate adjusting bolt 37, and a coil spring 38 as an urging means is arranged. Further, the tip of the flow rate adjusting bolt 37 is in contact with the piston valve 35, and a nut 39 for retaining is screwed. Another nut 40 is screwed onto the flow rate adjusting bolt 37, and the so-called double nut of the nuts 36 and 40 is used to adjust the axial fixing position of the bolt 37.

An O-ring 41 and a Y-ring 42 are arranged and sealed on the sliding contact surface between the piston valve 35 and the through hole 31A. The space surrounded by the rings 41 and 42 communicates with the compressed air supply port 43, and the tube 24 is connected to the port 43. A cutting fluid supply port 44 is connected to the through hole 31A of the main body 31, and the tube 23 is connected to the port 44. Each of these ports 43,44
Are formed so as to be parallel to each other and penetrate the body 31 in a direction orthogonal to the through hole 31A.

The connecting block 34 includes the valve seat 32.
A cutting fluid supply path 34A communicating with the above is formed. The cutting fluid supply nozzle 10 is connected to the cutting fluid supply passage 34A. The cutting fluid supply nozzle 10 includes a resin tube 15, a stainless pipe 16 fitted inside the base end side of the resin tube 15, a sleeve 13 for fixing the base end side of the resin tube 15, and a sleeve 13 for fixing. It is composed of a nut 14 and a guide pipe 17 that guides the distal end side of the resin tube 15.

The resin tube 15 is composed of a polyethylene thin tube (for example, an outer diameter of 2 mm and an inner diameter of about 1 mm), and its tip is obliquely cut so that the end surface is in close contact with the outer circumference of the tap 2. . The guide pipe 17 is also made of a polyethylene thin tube, and has a size that allows the resin tube 15 to be inserted therethrough. Therefore, the resin tube 1
5 is guided in the guide pipe 17 so as to be able to move forward and backward.

Nozzle support device 30 and guide pipe 1
7 is fixed to a table of a cutting machine such as a tapping device or a mounting groove of a frame 28. The guide pipe 17 is attached by a holder 18 so as to be rotatable in the vertical direction and the horizontal direction, and is configured so that the direction can be adjusted toward the tap 2.

If there are a plurality of taps 2 as shown in FIGS. 1 and 3, the cutting fluid supply nozzle 10 and the nozzle support device 30 may be arranged in a plurality according to the number thereof. In this case, as shown in FIG. 4 which is another embodiment to be described later, the port 4 of each nozzle support device 30 is provided by a bolt 62 and a nut 63 that penetrate the plurality of nozzle support devices 30.
3, 44 are directly connected to each other through the packing 61 to communicate with each other, and the tubes 24, 23 are connected to one port 43, 44 of the outermost end face of the plurality of nozzle support devices 30, and the other port 43, 44 is connected. Can be closed with screws.

In this embodiment as described above, first, the cutting fluid supply nozzle 10 and the nozzle support device 30 are prepared according to the number of the taps 2 to which the cutting fluid is applied. The nozzle support device 30 is connected to each other by using a bolt 62 and a nut 63, and the tubes 23 and 24 are connected in advance. Further, the resin tube 15 of the nozzle 10 is attached to the nozzle supporting device 30 in advance. For this attachment, the base end side of the resin tube 15 in which the stainless steel pipe 16 is built is inserted into the through hole of the sleeve 13, and the sleeve 13
May be screwed into the connecting block 34 with the fixing nut 14. As a result, the tapered surface of the sleeve 13 is in contact with the connecting block 34, so that as the nut 14 is tightened, the sleeve 13 tightens the resin tube 15 and the stainless pipe 16, and the resin tube 15 is prevented from coming off.

Further, the holder 18 holding the guide pipe 17 is attached to the frame 28 near each tap 2, the tip side of the resin tube 15 is inserted into the guide pipe 17, and then the guide pipe 17 is directed toward the tap 2. ,
The tip of each resin tube 15 is brought close to each tap 2 and brought into contact therewith. The length of the resin tube 15 is the tap 2
Nozzle support device 30 in a machine tool equipped with
It may be appropriately set in consideration of a place where the can be installed.

Then, the cutting fluid is supplied to the storage container 21,
The cutting fluid is passed through the tube 23 from the port 44 to the main body 31.
Supply within. Here, when the controller 22 is operated to send compressed air intermittently, the compressed air and the coil spring 3
The piston valve 35 moves back and forth in the axial direction by the action of 8, and the valve constituted by the valve seat 32 and the valve body 35A is opened and closed.
The cutting fluid is sent to the nozzle 10 side for each predetermined amount, for example, for each drop. That is, the piston valve 35 is normally urged by the urging force of the coil spring 38 so that the valve body 35A moves toward the valve seat 32.
The valve is closed by being inserted into each ring 4
When compressed air is supplied from the port 43 to the space surrounded by 1, 42, the pressure overcomes the urging force of the coil spring 38, the piston valve 35 moves in the direction away from the valve seat 32, the valve opens, and the tube 23 The cutting fluid supplied from the cutting fluid supply port 44 connected to is sent to the nozzle 10 side.

The supply amount of this cutting fluid to the nozzle 10 side is set by the stroke amount of the piston valve 35, that is, the contact position with the flow rate adjusting bolt 37.

The cutting fluid sent from the valve seat 32 to the fluid supply passage 34A of the connecting block 34 is sequentially discharged drop by drop through the stainless pipe 16 and the resin tube 15 and applied to the tap 2. At this time, if the tap 2 is rotationally driven, the cutting fluid is applied over the entire circumference of the tap 2, and the cutting fluid flows downward due to gravity. Some tap 2
The cutting fluid is applied to the entire outer peripheral portion of the.

According to the present embodiment as described above, since the cutting fluid supply nozzle 10 is brought into direct contact with the tap 2 to supply the cutting fluid, the cutting fluid does not spread in the form of mist. , Is applied only to the tap 2 and can be prevented from adhering to the work W or the like. For this reason, it is not necessary to wash the work W after cutting, the number of steps can be reduced, and workability and production efficiency can be improved. Further, the number of steps can be reduced, the use of cleaning liquid can be eliminated, and the adhering rate of the cutting liquid to the tap 2 can be increased to reduce the amount of the cutting liquid used, so that the manufacturing cost can be reduced.

The resin tube 15 is the guide pipe 1
It is guided by 7 so that it can move forward and backward toward the tap 2.
Tap the tip surface of the nozzle 10 by advancing and retracting the tip 2
Can be reliably contacted. Furthermore, the nozzle 10
If the tip of each is made of metal, the contact portion with the tap 2 may be metal-to-metal contact, and the nozzle 10 may be caught by the tap 2 or one of them may be damaged. Since the tube 15 is brought into contact with the tap 2, when the tube 2 is brought into contact with the tap 2, the tube 15 flexibly operates due to elasticity and is not caught by the tap 2 and can be brought into contact smoothly and surely.

Further, since the guide pipe 17 is rotatably held in the vertical and horizontal directions by the holder 18, the guide pipe 17, that is, the tip of the resin tube 15 can be easily directed toward the desired position of the tap 2. It can be arranged, and the contact position of the resin tube 15 with the tap 2 can be easily adjusted.

Further, since the resin tube 15 is made of a resin such as polyethylene, it can be easily cut with a cutter knife or the like, and even if the tip is worn due to contact with the tap 2, the tip is worn. It can be easily reused by cutting and contacting the tap 2 again. Further, the resin tube 15 has a fixing nut 14
The sleeve 13 can be easily removed by removing the resin tube 15. If the resin tube 15 becomes shorter or the mounting position of the tap 2 is changed and a longer resin tube 15 is required, the resin tube 15 You can easily replace it if you prepare separately.

When the number of installed cutting fluid supply nozzles 10 is changed, the number of connected nozzle support devices 30 is increased or decreased, and the cutting fluid supply nozzles 10 are attached to the increased nozzle support devices 30. Can be easily dealt with. At this time, since the same cutting liquid supply nozzle 10 and nozzle support device 30 can be used, the number of taps 2 can be varied by preparing a plurality of cutting liquid supply nozzles 10 and nozzle support devices 30. Even if there is, it can be dealt with reliably and easily.

Since the resin tube 15 can be curved, the distance between the nozzle supporting device 30 and the tap 2 can be changed without changing the length of the resin tube 15 itself. Therefore, it is not necessary to change the length of the resin tube 15 even if the mounting position of the tap 2 is varied, and if the resin tube 15 that matches the farthest tap 2 is prepared, the resin tube 15 has the same length. The resin tube 15 can be used, and the number of types of the resin tube 15 can be one, so that the resin tube 15 can be easily handled. On the other hand, since the resin tube 15 can be easily cut, it is possible to easily use the resin tube 15 having a length that matches the position of each tap 2.

Since the amount of cutting fluid supplied to the tap 2 can be easily controlled by the flow rate adjusting bolt 37, an appropriate amount should be discharged and applied according to the type and size of the tap 2 used. You can

Further, since the nozzle support device 30 is provided for each cutting fluid supply nozzle 10, the discharge amount can be adjusted for each nozzle 10. When the resin tube 15 has different lengths, even if the nozzle support device 30 has the same discharge amount, the discharge amount from the tip of the tube 15 is slightly different, and a very high precision discharge amount is required. In some cases, it may not be possible depending on the required accuracy,
If the discharge amount can be adjusted for each nozzle 10, a predetermined amount of cutting fluid can be accurately discharged from each tube 15 (nozzle 10) regardless of the difference in the length dimension of the resin tube 15.

Also, what is arranged near the tap 2 is
Only the resin tube 15 and the guide pipe 17,
Since the nozzle support device 30 and the like can be arranged at distant positions, the degree of freedom in arranging the cutting fluid supply nozzle 10 is increased, and the cutting liquid supply nozzle 10 can be attached to a small machine.

The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the cutting liquid supply nozzles 10 are attached to the nozzle support devices 30 one by one, but as shown in FIG. 4, the attachments 50 are connected to the cutting liquid supply nozzles 10 via the tubes 60. Or
Alternatively, the attachment 5 can be directly attached without passing through the tube 60.
0 may be connected and the cutting fluid supply nozzle 10 may be attached to each of the plurality of ports 50A formed in the attachment 50. If the cutting fluid supply nozzle 10 is provided via the attachment 50 in this way, the number of nozzle support devices 30 can be reduced with respect to the number of nozzles 10 and the cost can be reduced, and the tube 60 up to the attachment 50 can be provided. There is also an advantage that the number of can be reduced and the handling is easy. However, the accuracy of the discharge amount of the cutting fluid can be increased in the above-described embodiment.

Further, the cutting fluid application device 1 of the present invention is not limited to the case where the nozzle 10 is used by directly contacting the tap 2 as in the above-described embodiment, and for example, as shown in FIG. The tip of the resin tube 15 of the liquid supply nozzle 10 may be arranged slightly apart from the tap 2. The distance between the resin tube 15 and the tap 2 is approximately the diameter of one drop of cutting fluid discharged from the tip of the tube 15, that is, the distance that the cutting fluid can be maintained in a continuous state from the tip of the tube 15 to the tap 2 by surface tension. Can be up to. Even in such a case, instead of spraying the cutting liquid from the discharge port separated from the tap as in the conventional case, the cutting liquid is supplied without being scattered around in the liquid state, so that only the tap 2 is used as the cutting liquid. To be attached to the work W, etc. Further, even when the tip of the tube 15 is separated from the tap 2, since the interval is small, the tip of the tube 15 may come into contact with the tap 2 at the time of adjustment, but since the tube 15 is made of resin, Even if they abut, it is possible to prevent the tap 2 and the tube 15 from being damaged.

Further, in the present invention, since the resin tube 15 is guided by the guide pipe 17, the tip of the tube 15 is advanced and retracted toward the tap 2 so that the interval between the tap 2 and the tube 15 can be easily and accurately obtained. It can be set, and when the distance between the tap 2 and the tube 15 must be adjusted depending on the type of cutting fluid and the temperature,
The distance can be easily adjusted.

Further, a cutting fluid holding cup is attached to the tap 2, and the cutting fluid supplied by the resin tube 15 in the cup 2 flows downward along the tap 2 from the gap between the cup and the tap 2 to surround the tap 2. It may be configured to be applied to.

Further, when a plurality of nozzle supporting devices 30 are arranged, in the above-mentioned embodiment, each nozzle supporting device 30 is arranged.
Was directly connected with the bolts 62 and nuts 63, but a connecting tube may be connected between the ports 43 and 44 of each nozzle support device 30 to connect each nozzle support device 30 in series. 24 may be branched into a plurality of tubes (supply system) by using a branch block or the like, connected to the ports 43 and 44 of each nozzle support device 30, and the nozzle support devices 30 may be connected in parallel.

The diameter and length of the resin tube 15 may be set appropriately in practice, but in consideration of the fluidity of the cutting fluid and the like, a thin tube 15 is used when the length is short and a long tube is used when the length is long. The diameter may be changed according to the length, such as using a thick tube 15. In this case, the guide pipe 17 may be the one that matches the diameter of the resin tube 15. Further, the resin tube 15 is not limited to polyethylene, and various resin materials are used. In particular, the material may be set depending on the type of cutting fluid to be supplied and whether or not to contact the tap 2 or the like. The guide pipe 17 is not limited to polyethylene, but various resin materials can be used.
Further, the guide pipe 17 is not limited to the resin pipe,
It can also be used with metal pipes.

Further, the guide member for guiding the resin tube 15 is not limited to a pipe-shaped member, but may be a member for guiding the resin tube 15 with, for example, two rings which are separated by a predetermined distance.

In the above embodiment, the guide pipe 17 is rotatably held by the holder 18, but the guide pipe 17 may be held non-rotatably as long as it can be held toward the tap 2.

Further, the cutting fluid supply mechanism 20 is not limited to the configuration of the above-mentioned embodiment, and any other mechanism may be used as long as it can supply the cutting fluid to the nozzle 10 in a predetermined amount. For example, FIG.
As shown in FIG. 5, a liquid solenoid valve 73 operated by a power source 71 and a controller 72 is arranged in the middle of the tube 23 that supplies the cutting fluid from the storage vessel 21, and the cutting fluid is supplied from the storage vessel 21 at a predetermined amount. It may be configured to supply to the nozzle supporting device 70.

In the space 70A in the nozzle support device 70,
The needle valve 75 is arranged by a screw so as to be movable back and forth with respect to the valve seat 76. The needle valve 75 is biased to the valve seat 76 side by the coil spring 77, so that the rattling of the screw portion can be eliminated and the valve opening degree of the needle valve 75 can be accurately set. The tube 23 is connected to the space 70A, and when cutting fluid is intermittently supplied by the solenoid valve 73, the cutting fluid whose amount is adjusted by the valve opening degree of the needle valve 75 is sequentially nozzles. Supplied to 10. By using the cutting fluid supply mechanism 20 as described above, the cutting fluid can be supplied to the nozzle 10, that is, the cutting tool, in a predetermined amount.

Further, the tap 2 is preferably titanium-coated, but not limited thereto. The cutting tool is not limited to the tap 2 and the present invention can be used when another cutting tool such as a reamer or a drill is used.

[0044]

According to the cutting fluid application apparatus and the cutting fluid application method of the present invention as described above, there is an effect that the cutting fluid can be prevented from adhering to the work and the cutting fluid can be applied only to the cutting tool.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of a main part of a cutting fluid application device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a cutting fluid application device in the embodiment.

FIG. 3 is a perspective view showing a connected state of the nozzle support device in the embodiment.

FIG. 4 is a diagram showing a configuration of a cutting fluid application device according to another embodiment of the present invention.

FIG. 5 is a sectional view showing a cutting fluid supply nozzle tip portion according to another embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of a cutting fluid application device according to another embodiment of the present invention.

[Explanation of symbols]

 1 Cutting fluid application device 2 Tap which is a cutting tool 10 Cutting fluid supply nozzle 15 Resin tube 17 Guide pipe which is a guide member 18 Holder 20 Cutting fluid supply mechanism 21 Storage container 22 Controller 30 Nozzle support device 31 Main body 32 Valve seat 35 Piston Valve 37 Flow rate adjusting bolt 70 Nozzle support device

Claims (2)

[Claims] 1. A cutting fluid application device for applying a cutting fluid to a cutting tool, comprising: a cutting fluid supply nozzle provided at a position corresponding to the cutting tool; and a cutting fluid supply mechanism for supplying the cutting fluid to this nozzle. In addition to the above, the cutting fluid supply nozzle is configured to include a resin tube and a guide member that is disposed near the cutting tool and that guides the resin tube tip end portion toward the cutting tool so as to be able to move forward and backward. Cutting fluid application device. 2. A cutting fluid application method for applying a cutting fluid to a cutting tool, comprising a resin fluid and a guide member for guiding a tip portion of this resin tube so as to advance and retreat toward the cutting tool. In the state where the resin tube tip of this nozzle is in contact with the cutting tool via the cutting fluid discharged from at least the tip, the cutting fluid is supplied to the nozzle by the cutting fluid supply mechanism, A method for applying a cutting fluid, which comprises applying a cutting fluid to the cutting tool.