JP2013132723A - Cutting fluid spray device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive cutting fluid spray device capable of efficiently removing chips adhering to a tool in a machine tool or a workpiece.SOLUTION: A spray device includes a nozzle 100 for spray of cutting fluid, a valve sleeve 200 for covering the periphery of the nozzle, a valve supply 300 for covering the valve sleeve and being supplied with cutting fluid, a nozzle hole 102 for piercing through the nozzle, and a valve sleeve hole 202 passing through the inside and the outside of the valve sleeve. The device has: an elastic member 290 interposed between the valve sleeve and the valve supply, which has such a level of sliding resistance that the valve sleeve does not rotate, while following the nozzle when the nozzle rotates; and seal members 191 and 192 interposed between the nozzle and the valve supply so that cutting fluid may not leak outside from a gap between the nozzle and the valve supply. When the nozzle hole and the valve sleeve hole are in communication (non-communication) with each other, the cutting fluid is supplied (not supplied) into the nozzle.

Description

  The present invention relates to a cutting fluid ejection device that removes chips adhering to a tool of a machine tool, such as an NC lathe, a milling machine, or a drilling machine, or a workpiece to be machined.

  2. Description of the Related Art Conventionally, a cutting fluid ejection device that removes chips adhering to a tool (tool) of a machine tool such as an NC lathe, a milling machine, or a drilling machine (see, for example, Patent Document 1). This cutting fluid injection device includes a cutting fluid injection nozzle, a path for supplying the cutting liquid to the nozzle, and an electromagnetic on-off valve (three-way valve) (hereinafter referred to as “three-way valve”) that is disposed in the middle of the path and switches between injection and non-injection of the cutting fluid Electromagnetic valve ”).

Japanese Patent Laid-Open No. 2-106208

  In the above-described cutting fluid injection device, the cutting fluid is supplied or not with the opening and closing of the solenoid valve provided in the path for supplying the cutting fluid to the nozzle. Chips generated inside the machine tool are removed outside the machine tool without stopping the liquid injection device and the machine tool. However, with this cutting fluid ejection device, it is not possible to remove chips that are tangled or caught on the tool or workpiece of the machine tool.

  Chips that are entangled or caught on the tool or workpiece of a machine tool can be easily removed by spraying the cutting fluid from one direction depending on how the chips are entangled. After that, if the cutting fluid is sprayed from the opposite direction, the chips that are entangled or caught on the tool or workpiece of the machine tool are more complicatedly entangled or caught on these tools or workpieces, and the removal of the chips is prevented. Inability to do so is a problem.

  Therefore, even when such swarf is entangled or caught on a tool or workpiece, the swarf is sprayed from a predetermined direction without stopping the cutting fluid spraying device and the machine tool. A cutting fluid spraying device that can be removed is conceivable (see, for example, the cutting fluid spraying device 8 shown in FIG. 7A). The configuration of the cutting fluid ejection device 8 shown in FIG. 7A includes a cutting fluid ejection nozzle 810, an electromagnetic valve 830 provided in a path for supplying the cutting fluid 890 to the nozzle, and a cutting fluid ejection nozzle 810. A motor 820 that rotates around the nozzle axis is provided. Then, the cutting fluid injection nozzle 810 rotates around the nozzle axis, and the cutting fluid 890 is controlled by the electromagnetic valve 830 to control the cutting fluid 890 to be injected only from a specific direction. Chips that are tangled or caught on the tool or workpiece are removed. However, the cutting fluid injection device 8 shown in FIG. 7A specifically requires an electromagnetic valve 830 that performs injection or non-injection of the cutting fluid, which increases costs.

  On the other hand, without using such a solenoid valve, even when the above-mentioned chips are entangled or caught on a tool or workpiece, the cutting fluid is discharged from a predetermined direction without stopping the cutting fluid injection device and the machine tool. Another form of the cutting fluid ejecting apparatus that can remove the chips by spraying can be considered (see, for example, the cutting fluid ejecting apparatus 9 shown in FIG. 7B). The cutting fluid ejection device 9 shown in FIG. 7B illustrates a cutting fluid ejection nozzle 910, a first motor 930 that rotates the cutting fluid ejection nozzle 910 around the nozzle axis, and a cutting fluid ejection nozzle. 7 (b), and a second motor 930 that is driven to rotate in the vertical direction. Then, the nozzle 910 rotates around the nozzle axis and rotates in the vertical direction as viewed in FIG. 7B, so that the cutting fluid 920 is sprayed only in one specific direction with respect to the tool or workpiece, and the machine tool It is designed to remove chips that are tangled or caught on the tools and workpieces. However, two motors for rotating the nozzle 910 are required, and the cutting fluid ejection device itself becomes a large-scale device, which increases costs. In addition, when the nozzle 910 is returned to the initial position, the cutting fluid 920 is returned to a place where it is not originally needed away from the tool or workpiece, and therefore, the cutting fluid is used unnecessarily.

  An object of the present invention is to provide an inexpensive cutting fluid ejecting apparatus that can efficiently remove chips adhering to a tool or workpiece of a machine tool.

In order to solve the above-described problem, a cutting fluid ejection device according to claim 1 of the present invention is provided.
In a cutting fluid injection device that injects a cutting fluid onto an object to be cut or a cutting tool,
A nozzle for injecting cutting fluid;
A motor that rotates the nozzle around its axis to change the direction of the tip of the nozzle that ejects the cutting fluid;
A valve sleeve covering at least a part of the periphery of the nozzle over the entire circumference of the nozzle;
A valve supply that covers at least a part of the periphery of the valve sleeve over the entire circumference of the valve sleeve, and that is supplied with cutting fluid from a supply source of cutting fluid;
At least one nozzle hole formed on the peripheral surface of the nozzle and penetrating the inside and outside of the nozzle;
A cutting fluid ejecting apparatus having at least one valve sleeve hole formed on a peripheral surface of the valve sleeve and penetrating the inner side and the outer side of the valve sleeve,
An elastic member interposed between the valve sleeve and the valve supply, having a sliding resistance such that the valve sleeve does not rotate following the nozzle when the nozzle is rotated by driving the motor; ,
A seal member interposed between the nozzle and the valve supply so that the cutting fluid does not leak to the outside from between the nozzle and the valve supply;
When the nozzle hole and the valve sleeve hole are in communication with each other by driving the motor, the cutting fluid is supplied into the nozzle through the valve sleeve hole and the nozzle hole from the valve supply. While cutting fluid is sprayed from the tip to the workpiece and cutting tool,
The cutting fluid supplied to the valve supply is not supplied into the nozzle when the nozzle hole and the valve sleeve hole are disconnected from each other by driving the motor.

  Since the cutting fluid injection device according to claim 1 has such a configuration, it is not necessary to provide a solenoid valve for switching between the injection and non-injection of the cutting fluid, and the cutting fluid is injected in a specific direction toward the tool or workpiece. can do. Therefore, the high cost of the whole apparatus by providing such a solenoid valve can be avoided. In addition, when the nozzle is moved while spraying cutting fluid in a specific direction along the tool or workpiece, the nozzle is returned to its original position while spraying cutting fluid from the nozzle in a direction that does not hit the tool or workpiece. There is no need to use cutting fluid wastefully.

Moreover, the cutting fluid injection device according to claim 2 of the present invention is the cutting fluid injection device according to claim 1,
The outer peripheral portion of the nozzle is provided with an engaging protrusion, and the valve sleeve has a notch for restricting the movement range of the engaging protrusion as the nozzle rotates over a certain angular range in the circumferential direction of the nozzle. With
When the nozzle is rotated by the motor in a state where the engaging protrusions are in contact with both ends of the notch, the valve sleeve also rotates following the rotation of the nozzle,
In a state where the engaging protrusions are not in contact with both ends of the notch, even if the nozzle is rotated by the motor, the valve sleeve is moved through the sliding resistance of the elastic body. It is characterized by staying without following the rotation.

  According to the cutting fluid ejection device of the second aspect, when the nozzle is rotated by the motor due to the engagement relationship between the engaging projection provided on the nozzle and the notch provided on the valve sleeve, the valve sleeve also rotates the nozzle. The valve sleeve does not follow the rotation of the nozzle but stays in place even if the nozzle rotates by following the rotation of the nozzle. That is, since such an operation can be realized with a simple configuration, the cost of the apparatus can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, the cutting fluid injection apparatus which can remove efficiently the chip | tip adhering to the tool and workpiece | work of a machine tool can be provided.

It is the front view (Drawing 1 (a)) and side view (Drawing 1 (b)) which show partially cutting fluid injection device concerning one embodiment of the present invention transparently. It is sectional drawing of the cutting fluid injection apparatus shown to Fig.1 (a). It is a decomposition | disassembly side view explaining an example of the assembly | attachment process of the cutting fluid injection apparatus shown in FIG. It is explanatory drawing explaining the effect | action of the cutting fluid injection apparatus shown in FIG. In the cutting fluid injection device shown in FIG. 1, it is explanatory drawing explaining the state which the cutting fluid injection part is injecting the cutting fluid. In the cutting fluid injection device shown in FIG. 1, it is explanatory drawing explaining the state which the cutting fluid injection part has not injected the cutting fluid. An explanatory view schematically showing a conventional cutting fluid injection device (FIG. 7A) and an explanatory view schematically showing a conventional cutting fluid injection device different from FIG. 7A (FIG. 7B) is there.

  Hereinafter, a cutting fluid ejection device 1 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view (FIG. 1 (a)) and a side view (FIG. 1 (b)) partially transparently showing a cutting fluid ejection device 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the cutting fluid ejecting apparatus 1 shown in FIG. FIG. 3 is an exploded side view for explaining an example of the assembly process of the cutting fluid ejection device 1 shown in FIG.

  A cutting fluid injection apparatus 1 according to an embodiment of the present invention uses a cutting fluid (hereinafter simply referred to as “cutting fluid”) that also serves as a coolant for a tool or workpiece mounted on an NC lathe that is one of machine tools. It is a device that removes chips adhering to NC lathe tools and workpieces while spraying.

  The cutting fluid ejecting apparatus 1 includes a nozzle 100 that ejects the cutting fluid, a motor 400 that rotates the nozzle 100 around its axis in order to change the orientation of the cutting fluid ejecting unit 120 that ejects the cutting fluid, and the nozzle 100. The valve sleeve 200 covers almost the entire circumference of the nozzle 100 over the entire circumference of the nozzle 100, and covers the whole circumference of the valve sleeve 200 over the entire circumference of the valve sleeve 200, and from the cutting fluid supply source (not shown). Is supplied with the valve supply 300.

  The nozzle 100 is formed with a plurality of nozzle holes 102 penetrating the inner side and the outer side of the nozzle 100 on the peripheral surface thereof. Further, the valve sleeve 200 is formed with a plurality of valve sleeve holes 202 penetrating the inner side and the outer side of the valve sleeve 200 on its peripheral surface.

  In addition, a sleeve restraining ring (sliding resistance ring) between the valve sleeve 200 and the valve supply 300 having a sliding resistance such that the valve sleeve 200 does not rotate following the nozzle 100 when the nozzle 100 is rotated by driving the motor 400. Elastic member) 290 is interposed. Further, interposed nozzle seal rings (seal members) 191 and 192 are provided between the nozzle 100 and the valve supply 300 so that the cutting fluid does not leak from between the nozzle 100 and the valve supply 300 to the outside. Has been.

  Then, when the nozzle hole 102 and the valve sleeve hole 202 are brought into communication with each other by the driving of the motor 400, the cutting fluid is supplied into the nozzle 100 from the valve supply 300 through the valve sleeve hole 202 and the nozzle hole 102. The cutting fluid is ejected from the cutting fluid ejecting unit 120 to the object to be cut and a cutting tool (hereinafter referred to as “workpiece or tool”), while the motor 400 is driven so that the nozzle hole 102 and the valve sleeve hole 202 are not in contact with each other. When the communication state is established, the cutting fluid supplied to the valve supply 300 is not supplied into the nozzle 100.

  Hereinafter, the above-described components of the present embodiment will be described in detail. The nozzle 100 is made of, for example, stainless steel such as SUS, and is provided at an elongated cylindrical nozzle body 110 having a closed base end portion and a distal end portion of the nozzle body 110. In the present embodiment, the nozzle 100 is substantially the same as the axial direction of the nozzle body 110. And a cutting fluid ejection part 120 having a cutting fluid ejection opening in the vertical direction. In addition, a motor 400 that is rotationally driven by a predetermined angle (about 90 degrees in the present embodiment) is connected to the base end side of the nozzle body 110 via a reduction gear (not shown). In addition, the sleeve drive pin 101 is disposed so as to protrude from the base end side of the nozzle body 110 by a predetermined distance. Further, in the present embodiment, five nozzle holes 102 penetrating the inside and outside of the nozzle body 110 are arranged in series in the axial direction of the nozzle body 110 from the sleeve drive pin 101 to the longitudinal center side of the nozzle body 110. The nozzle holes 102 are formed so as to have the same center angle with respect to the axis of the nozzle body 110 in the circumferential direction of the nozzle 100, so that the mutual nozzle holes 102 are formed as shown in FIG. Are arranged in a straight line in the longitudinal direction of the nozzle body 110. Further, the cutting fluid injection unit 120 has a substantially cylindrical shape with a diameter slightly reduced toward the cutting fluid injection opening, and the inside of the base end side communicates with the inside of the tip end side of the nozzle body 110.

  In this embodiment, the valve sleeve 200 is formed of a cylindrical body made of stainless steel such as SUS. The inner diameter of the valve sleeve 200 is slightly larger than the outer diameter of the nozzle body 110, and the valve sleeve 200 can rotate around the nozzle body 110. In addition, in this embodiment, the full length of the valve sleeve 200 is about half of the full length of the nozzle 100, and the notch part 201 is provided in the circumferential side predetermined range at the motor side edge part. In the case of the present embodiment, the notch 201 is formed over about 30 degrees in the circumferential direction, and the sleeve drive pin 101 of the nozzle 100 is engaged with the notch 201.

  As a result, when the nozzle 100 is rotated by the motor 400 with the sleeve drive pin 101 in contact with both circumferential ends of the notch 201, the valve sleeve 200 also rotates following the rotation of the nozzle 100, In a state where the sleeve drive pin 101 is not in contact with both ends of the notch 201, the valve sleeve 200 is moved through the sliding resistance of the valve sleeve restraining ring 290 even if the nozzle 100 is rotated by the motor 400. It stays without following 100 rotations.

  In the present embodiment, in the case of this embodiment, five valve sleeve holes 202 that penetrate the inside and outside of the valve sleeve 200 at the same central angle with respect to the axis are arranged in series in the longitudinal direction of the valve sleeve 200. ing. The valve sleeve hole 202 is disposed when the sleeve drive pin 101 of the nozzle 100 comes into contact with one circumferential end of the notch 201 of the valve sleeve hole 202, and the five nozzle holes 102 have five valves. The nozzle hole 102 and the valve sleeve hole 202 are arranged at positions where they correspond to the sleeve hole 202 in the circumferential direction and communicate with each other.

  In this embodiment, the valve supply 300 has a cylindrical body shape made of stainless steel such as SUS and has a different inner diameter in the longitudinal direction, and a valve supply from a predetermined position in the circumferential direction of the valve supply body 310. It consists of a cutting fluid supply hose connection part 320 having a cylindrical shape protruding in a direction perpendicular to the axial direction of the main body 310. Seal ring engagement grooves 311 are formed on the inner peripheral portion of the valve supply main body 310 in the vicinity of both ends thereof over the entire periphery.

  The inner diameter of the valve supply body 310 sandwiched between the seal ring engagement groove 311 on the distal end side and the seal ring engagement groove 311 on the proximal end side of the valve supply body 310 is slightly larger than the inner diameter of the valve sleeve 200. A valve sleeve accommodating portion 301 in which the valve sleeve 200 is accommodated is formed. A sleeve restraining ring engaging groove 315 is formed in the vicinity of the nozzle tip side of the valve sleeve accommodating portion 301. The inner diameter of the valve supply 310 sandwiched between the sleeve restraining ring engaging groove 315 of the valve sleeve accommodating portion 301 and the seal ring engaging groove 311 on the nozzle proximal end side is somewhat larger than the outer diameter of the valve sleeve 200. This space is formed in the valve supply 300 as a cutting fluid supply unit 302. The inside of the cutting fluid supply hose connection portion 320 communicates with the cutting fluid supply portion 302 in the valve supply 300 so that the cutting fluid is always supplied to the cutting fluid supply portion 302 in the valve supply 300. Yes.

  Both the nozzle seal rings 191 and 192 that engage with the seal ring engaging groove 311 of the valve sleeve 200 and the sleeve restricting ring 290 that engages with the sleeve restricting ring engaging groove 315 of the valve supply 300 are generally commercially available. An O-ring is used. The two nozzle seal rings 191 and 192 are interposed in a compressed state between the seal ring engagement groove 311 of the valve sleeve 200 and the outer peripheral surface of the nozzle 100, and the cutting fluid in the nozzle is in this state. It is designed not to leak out from one seal part.

  The sleeve restraining ring 290 is interposed in a compressed state between the sleeve restraining ring engaging groove 315 of the valve supply 300 and the outer peripheral surface of the valve sleeve, and the sleeve driving pin 101 provided in the nozzle 100 is provided with the valve. When the sleeve 200 is not in contact with both ends of the notch 201, a sliding resistance is generated so that the valve sleeve 200 does not rotate following the rotation of the nozzle 100.

  Then, an example of the assembly | attachment procedure of the cutting fluid injection apparatus 1 which concerns on the above-mentioned embodiment is demonstrated. FIG. 3 is an explanatory view showing the respective components disassembled in order to explain the assembly procedure of the cutting fluid ejection device 1. If it demonstrates based on the same figure, the nozzle main body 110 which removed the cutting fluid injection part 120 first will be inserted in the base end opening part in which the notch part 201 of the valve sleeve 200 is formed from the front end side. Then, the sleeve drive pin 101 of the nozzle body 110 is engaged with the notch 201 of the valve sleeve 200. Then, the cutting fluid injection unit 120 is fixed to the nozzle body 110. Subsequently, the nozzle seal rings 191 and 192 are engaged with the seal ring engagement groove 311 of the valve supply 300 from the opening portions at both ends of the valve supply 300, and the sleeve restraining ring engagement groove 315 from the distal end side opening portion of the valve supply 300. The sleeve restraining ring 290 is engaged with the sleeve. Next, the combined body of the nozzle 100 and the valve sleeve 200 is inserted into the opening on the front end side of the valve supply 300 from the notch portion side of the valve sleeve 200. Then, the base end portion of the nozzle main body 110 is projected from the base end side opening of the valve supply 300, and the base end portion of the nozzle main body 110 is connected to the motor 400. Thus, the cutting fluid ejecting apparatus 1 according to the present embodiment can be easily assembled. Note that this assembling procedure is merely an example, and other procedures may be used as long as the cutting fluid ejection device 1 according to the present embodiment can be assembled.

  Next, the movement of the nozzle 100 and the valve sleeve 200 of the cutting fluid ejection device 1 assembled in this way will be described. In this embodiment, the movement of the nozzle 100 and the valve sleeve 200 of the cutting fluid ejecting apparatus 1 is notched between the sleeve drive pin 101 and the valve sleeve 200 of the nozzle 100 that is rotated by the motor 400 within a range of about 90 degrees. Description will be made for each predetermined rotation angle while considering the positional relationship with the unit 201. 4 (a) to 4 (d) are plan views of the cutting fluid ejection device 1 as viewed from the nozzle hole 102 of the nozzle 100 and the valve sleeve hole 202 side of the valve sleeve 200, and FIG. ′) Shows the nozzle 100 and the valve sleeve 200 (more specifically, the sleeve drive pin 101 and the valve sleeve 200 of the nozzle 100) viewed from the proximal end side of the nozzle 100 shown corresponding to FIGS. 4 (a) to 4 (d). The relationship with the notch 201) is shown.

  In Fig.4 (a), the front-end | tip part of the nozzle 100 is rotating toward the leftmost side. This can also be understood from the fact that in FIG. 4 (a ′), the valve sleeve 200 is in contact with the right end of the notch 201. At this stage, as is clear from FIG. 4A, the nozzle hole 102 and the valve sleeve hole 202 are not in communication, and the cutting fluid around the valve sleeve collected in the cutting fluid supply portion 302 of the valve supply 300. Does not enter the nozzle.

  Next, as shown in FIG. 4B ', when the nozzle 100 is slightly rotated (about 45 degrees in this embodiment), the valve sleeve 200 does not rotate, and only the nozzle 100 rotates. This is because the sleeve restraining ring 290 has such a sliding resistance that the valve sleeve 200 does not rotate following the nozzle 100 even when the nozzle 100 is rotated by driving the motor 400.

  The sleeve drive pin 101 of the nozzle 100 abuts on the left side of the notch 201 shown in FIG. By reaching this stage, as apparent from FIG. 4B, the nozzle hole 102 communicates with the valve sleeve hole 202, and the cutting fluid around the valve sleeve accumulated in the cutting fluid supply portion 302 of the valve supply 300 is removed. The cutting fluid enters the nozzle and is ejected from the cutting fluid ejecting unit 120 through the cutting fluid ejecting unit 120 to the tool or the workpiece vigorously.

  Next, as shown in FIG. 4C ′, when the nozzle 100 is further slightly rotated (about 45 degrees in this embodiment), the sleeve drive pin 101 of the nozzle 100 rotates the valve sleeve 200 by a predetermined angle. The nozzle 100 is rotated. In the process from FIG. 4B to FIG. 4C, the nozzle hole 102 and the valve sleeve hole 202 rotate together without rotating relative to each other in a state where the nozzle hole 102 and the valve sleeve hole 202 communicate with each other. The cutting fluid collected in the cutting fluid supply portion 302 of the valve supply 300 enters the nozzle body through the nozzle hole 102 and the valve sleeve hole 202, and the cutting fluid from the cutting fluid ejecting portion 120 vigorously moves toward the tool or workpiece. It comes to be injected.

  Next, as shown in FIG. 4D and FIG. 4D ′, when the nozzle 100 is rotated in the opposite direction to the previous position to return to the initial position, the circumference of the notch 201 of the valve sleeve 200 is increased. Only the sleeve drive pin 101 of the nozzle 100 moves along the direction. This is because the sleeve restraining ring 290 has such a sliding resistance that the valve sleeve 200 does not rotate following the nozzle 100 even when the nozzle 100 is rotated by driving the motor 400.

  The nozzle 100 moves until the sleeve drive pin 101 abuts against the circumferentially opposite end of the notch 201 of the valve sleeve 200. Accordingly, the nozzle hole 102 and the valve sleeve hole 202 are not communicated again, and the cutting fluid around the valve sleeve accumulated in the cutting fluid supply portion 302 of the valve supply 300 is prevented from entering the nozzle.

  FIGS. 5A to 5D are views showing a state in which the cutting fluid spraying unit 120 is moved from the left side to the right side in the drawing and the cutting fluid is sprayed onto the tool 10. It is the top view seen from the injection unit 120 and the opposite direction.

  FIGS. 5 (a ′) to 5 (d ′) are diagrams corresponding to FIGS. 5 (a) to 5 (d), respectively, and the process of injecting the cutting fluid onto the tool 10 is the nozzle base end portion. It is the end view seen from the side.

  5A and 5A, the sleeve drive pin 101 is located on the right side in the figure, the cutting fluid injection unit 120 is directed on the left side in the figure, and the nozzle hole 102 and the valve sleeve hole 202 communicate with each other. It can be seen that the cutting fluid is not ejected from the cutting fluid ejecting section 120.

  When the nozzle 100 is slightly rotated by the motor 400 to reach the state shown in FIGS. 5B and 5B ′, the sleeve drive pin 101 rotates and moves to the left side in the drawing, and the cutting fluid ejecting unit 120 is shown in the drawing. The nozzle hole 102 and the valve sleeve hole 202 communicate with each other approaching the left end portion of the tool 10, and it can be seen that the cutting fluid is ejected vigorously from the cutting fluid ejecting portion 120 to the tool 10 (in FIG. (See the cutting fluid indicated by the arrow). When the nozzle 100 is further slightly rotated by the motor 400 to reach the state shown in FIGS. 5C and 5C, the sleeve drive pin 101 is further rotated and the valve sleeve 200 is moved to the sleeve drive pin 101. With the nozzle hole 102 and the valve sleeve hole 202 communicating with each other, the cutting fluid ejecting section 120 moves toward the center of the tool 10 in the drawing, and the cutting fluid urges the cutting fluid from the cutting fluid ejecting section 120 to the tool 10. It can be seen that the spray is well performed (see the cutting fluid indicated by the white arrow in the figure).

  When the nozzle 100 is further rotated by the motor 400 and reaches the state shown in FIGS. 5D and 5D ′, the sleeve drive pin 101 rotates further to the left in the drawing and the valve sleeve 200 is moved to the sleeve. While being pushed by the drive pin 101 and rotating, the cutting fluid ejecting portion 120 is directed to the right end portion of the tool 10 in the drawing while the nozzle hole 102 and the valve sleeve hole 202 are in communication with each other. Thus, it can be seen that the tool 10 is sprayed vigorously (see the cutting fluid indicated by the white arrow in the figure). As described above, as shown in FIG. 5, when the cutting fluid injection unit 120 returns from the right side to the left side of the tool 10, cutting is performed from the left side to the right side in the drawing with respect to the tool 10 in such a series of steps. It can be understood that the liquid ejecting unit 120 ejects the cutting fluid vigorously toward the tool 10.

  On the other hand, as shown in FIG. 6, when the cutting fluid injection unit 120 returns from the right side to the left side of the tool 10, only the sleeve drive pin 101 rotates to the right side as shown in FIGS. 6 (a) and (a '). Although the nozzle sleeve 200 does not rotate, the nozzle hole 102 and the valve sleeve hole 202 do not communicate with each other, and it can be seen that the cutting fluid is not ejected from the cutting fluid ejecting unit 120 toward the tool 10.

  When the sleeve drive pin 101 further rotates and moves to the right side in the figure, it is pushed by the sleeve drive pin 101 as shown in FIGS. 6 (b) and (b ′) to FIGS. 6 (d) and (d ′). The nozzle sleeve 200 rotates integrally with the nozzle 100. During this rotational movement, the nozzle hole 102 and the valve sleeve hole 202 are kept in a state of not communicating with each other, so that the cutting fluid ejecting portion 120 is not ejected from the cutting fluid ejecting portion 120 while the cutting fluid ejecting portion 120 is shown in FIGS. '), That is, it returns to the original position shown in FIGS. 5 (a) and (a').

  In this way, the cutting fluid ejection device 1 according to the present embodiment dispenses the cutting fluid from the cutting fluid ejection unit 120 only in one direction (bound direction) in which the tool 10 extends with a simple configuration without using a special motor. The tool 10 is jetted vigorously toward the tool 10, and the cutting fluid is not jetted from the cutting fluid jet part 120 toward the tool 10 in the direction opposite to the extending direction of the tool 10 (return direction). Understandable.

  As described above, when the cutting fluid ejection device 1 according to the present embodiment is used, it is not necessary to provide a solenoid valve for switching between ejection and non-ejection of the cutting fluid, and the cutting fluid is directed in a specific direction toward the tool or workpiece. Can be injected. Therefore, the high cost of the whole apparatus by providing such a solenoid valve can be avoided. Further, when the nozzle 100 is moved while spraying cutting fluid in a specific direction along the tool or workpiece, the cutting fluid is sprayed from the nozzle 100 in a direction not hitting the tool or workpiece. There is no need to return while cutting, and the cutting fluid is not wasted. When the nozzle 100 is rotated by the motor 400 due to the engagement relationship between the sleeve drive pin 101 provided in the nozzle 100 and the notch 201 provided in the valve sleeve 200, the valve sleeve 200 follows the rotation of the nozzle 100. Even if the nozzle 100 is rotated by the motor 400, the valve sleeve 200 does not follow the rotation of the nozzle 100 and remains in place. That is, according to the cutting fluid ejecting apparatus 1 according to the present embodiment, since such an operation can be realized with a simple configuration, the cost of the apparatus can be reduced.

  In addition, about the shape, dimension, and material of the cutting fluid injection device described in the above-described embodiment, only an example is shown, and other shapes, materials, and dimensional relationships are included within the scope of the present invention. It can be adopted.

  In addition, the number of components in the above-described embodiment, for example, the number of nozzle holes and sleeve holes is not limited to five as described above, and it goes without saying that other numbers may be used. . In the present embodiment, the nozzle holes 102 are formed in only one row in the nozzle body 110, and the corresponding sleeve holes 202 are formed in the valve sleeve 200. However, the present invention is not limited to this. It is not limited to the combination of such forms. That is, when nozzle holes and sleeve holes are formed in a plurality of rows in the nozzle body and the valve sleeve, and the sleeve drive pin 101 contacts one end in the circumferential direction of the notch 201, all the nozzle holes and sleeve holes are On the other hand, when the sleeve drive pin 101 comes into contact with the other end in the circumferential direction of the notch 201, all the nozzle holes and the sleeve holes may be in a non-communication state.

  In addition, the sleeve drive pin in the above-described embodiment was originally provided in the nozzle at the assembly stage of the cutting fluid ejecting apparatus 1, but instead, after the valve sleeve is inserted from the nozzle base end portion, a subsequent process is performed. The sleeve drive pin may be press-fitted into the nozzle pin mounting hole.

  Moreover, although the above-mentioned embodiment demonstrated the case where a cutting fluid was injected to the tool and workpiece | work of NC lathe, it is not necessarily limited to this, For example, you may apply this invention to a NC milling machine or a drilling machine. .

DESCRIPTION OF SYMBOLS 1 Cutting fluid injection apparatus 100 Nozzle 101 Sleeve drive pin 102 Nozzle hole 110 Nozzle main body 120 Cutting fluid injection part 191,192 Nozzle seal ring 200 Valve sleeve 201 Notch part 202 Valve sleeve hole 290 Sleeve restraining ring 300 Valve supply 301 Valve sleeve accommodation Reference numeral 302: Cutting fluid supply unit 310 Valve supply body 311 Seal ring engagement groove 315 Sleeve restraining ring engagement groove 320 Cutting fluid supply hose connection part 400 Motor

Claims (2)

In a cutting fluid injection device that injects a cutting fluid onto an object to be cut or a cutting tool,
A nozzle for injecting cutting fluid;
A motor that rotates the nozzle around its axis to change the direction of the tip of the nozzle that ejects the cutting fluid;
A valve sleeve covering at least a part of the periphery of the nozzle over the entire circumference of the nozzle;
A valve supply that covers at least a part of the periphery of the valve sleeve over the entire circumference of the valve sleeve, and that is supplied with cutting fluid from a supply source of cutting fluid;
At least one nozzle hole formed on the peripheral surface of the nozzle and penetrating the inside and outside of the nozzle;
A cutting fluid ejecting apparatus having at least one valve sleeve hole formed on a peripheral surface of the valve sleeve and penetrating the inner side and the outer side of the valve sleeve,
An elastic member interposed between the valve sleeve and the valve supply, having a sliding resistance such that the valve sleeve does not rotate following the nozzle when the nozzle is rotated by driving the motor; ,
A seal member interposed between the nozzle and the valve supply so that the cutting fluid does not leak to the outside from between the nozzle and the valve supply;
When the nozzle hole and the valve sleeve hole are in communication with each other by driving the motor, the cutting fluid is supplied into the nozzle through the valve sleeve hole and the nozzle hole from the valve supply. While cutting fluid is sprayed from the tip to the workpiece and cutting tool,
The cutting fluid injection, wherein the cutting fluid supplied to the valve supply is prevented from being supplied into the nozzle when the nozzle hole and the valve sleeve hole are disconnected from each other by driving the motor. apparatus. The outer peripheral portion of the nozzle is provided with an engaging protrusion, and the valve sleeve has a notch for restricting the movement range of the engaging protrusion as the nozzle rotates over a certain angular range in the circumferential direction of the nozzle. With
When the nozzle is rotated by the motor in a state where the engaging protrusions are in contact with both ends of the notch, the valve sleeve also rotates following the rotation of the nozzle,
In a state where the engaging protrusions are not in contact with both ends of the notch, even if the nozzle is rotated by the motor, the valve sleeve is moved through the sliding resistance of the elastic body. The cutting fluid injection device according to claim 1, wherein the cutting fluid injection device stays without following the rotation of the cutting fluid.

Images