JP3489412B2 - Tool with oil hole - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool with an oil hole, in which a nozzle body for supplying a cutting oil to a cutting blade provided at the tip of a shank is provided in a tool body.

[0002]

2. Description of the Related Art Conventionally, as a tool with an oil hole, for example, a cutting oil supply passage is formed inside a cutting tool body, and a nozzle portion having an introduction passage communicating with the supply passage is integrated with the cutting tool body. It has been proposed that the cutting fluid supplied from the machine tool side be passed through the inside of the cutting tool body to be intensively supplied from the nozzle portion toward the tip of the cutting blade.

[0003]

However, since the cutting tool with an oil hole having such a structure collects the cutting fluid supplied to the cutting blade and filters it, it is reused. While the cutting fluid is circulated many times, fine chips that could not be filtered are clogged in the supply passage and the introduction passage, causing a problem that the supply of the cutting fluid becomes unstable.

In this case, it is necessary to remove the chips clogged in the supply passage and the introduction passage. However, in the bite having the above-mentioned structure, the nozzle portion is integrally provided in the tool body. However, there is a problem that it is extremely difficult to remove the chips from the supply path and the introduction path.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a cutting tool having an oil hole, which can easily remove chips clogging the cutting oil supply passage of the cutting tool body.

[0006]

To solve the above problems SUMMARY OF THE INVENTION To achieve the above object, an oil hole with bytes of the invention,
A nozzle portion for discharging a cutting fluid toward the tip of the cutting blade is detachably attached to a bite body having a cutting edge provided at the tip of the shank.

With such a structure, even if one of the nozzle portion and the bite body is defective, the nozzle portion can be removed and the maintenance work can be efficiently performed on each of them, and the replacement can be performed. If it is necessary to replace either one, it is possible to economically use each component.

Moreover, when the nozzle part is mounted on the cutting tool body, even if the discharging direction is misaligned due to the machining tolerance of the nozzle part and the cutting tool body, by finely adjusting the discharging direction of the nozzle part. The cutting fluid can be reliably and intensively supplied to the tip of the cutting blade.

[0009] Then, the nozzle oil hole with bytes of claim 1 wherein, the nozzle portion is formed in the nozzle body
Insert a finger at the tip of the cutting edge in the mounting groove and the oil supply hose mounting groove.
And a cutting fluid supplied to the nozzle
The refueling hoses are installed so that they communicate with each other.
Made, and can be freely attached to and detached from the upper surface of the tool body by screws
Attached to the nozzle, and rotate this nozzle around its axis.
It is characterized in that the discharge direction can be finely adjusted by the setting .

With such a structure, even when a cutting tool in which a supply path for supplying the cutting fluid is not formed is used in the shank, the cutting fluid can be reliably and intensively supplied to the tip of the cutting blade. Therefore, effective cooling of the tip of the cutting blade and smooth discharge of chips can be achieved.

Further, the oil holes with byte according to claim 2, the supply path for the cutting fluid supplied to the inside of the bit body is
The nozzle is formed so as to face the nozzle portion.
And a configuration in which an introduction path communicating with the supply path is provided
And the nozzle part is a nose formed on the nozzle part body.
In the mounting groove, attach the nozzle that is pointed to the tip of the cutting edge.
Attach it to the main body of the nozzle part.
The above-mentioned guide for introducing the cutting fluid supplied from the nozzle into the nozzle.
The bite body is formed by forming an entrance and is formed by a screw.
It is detachably attached to the upper surface of the
Finely adjust the discharge direction by rotating around the axis
It is characterized by being able to

With this configuration, even if cutting chips are clogged in the cutting tool body or the nozzle section and the supply of cutting fluid becomes unstable, the nozzle section can be removed from the cutting tool body to remove the inside of the cutting tool body. Chips can be easily and surely removed from the supply passage and the introduction passage of the nozzle portion.

Further, when the nozzle portion is screwed to the bite main body, the place where the supply passage and the introduction passage communicate with each other can be made liquid-tight, and a good sealing property can be secured when the cutting fluid is supplied. can do.

A tool with an oil hole according to claim 3 is the tool with an oil hole according to claim 1 or 2 , wherein
The nozzle part is fixed to a side surface of the tip part of the cutting tool body.

With this structure, the gripping position when fixing the tool body to the machine tool can be brought closer to the tip of the tool body, so that the tool protrusion amount can be reduced and the rigidity of the tool body can be improved. Can be increased.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged view of a main part showing a first embodiment of a tool with oil holes according to the present invention, in which reference numeral 1 is a tool body, 2 is a cutting blade, and 3 is a nozzle portion.

The tool with an oil hole shown in FIG.
It is roughly configured by a cutting tool body 1 in which a cutting blade 2 is formed on a cutting edge 1b provided at the tip of a, and a nozzle section 3 which is detachably attached to the cutting tool body 1.

As shown in FIG. 1, for example, the nozzle portion 3 is provided in the nozzle mounting groove 3aa and the oil supply hose mounting groove 3ab formed in the nozzle portion main body 3a (see FIG. 2), and in the tip 2a of the cutting edge 2. A nozzle 3b that is directed and an oil supply hose 3c that supplies a cutting oil to the nozzle 3b are installed so as to communicate with each other, and are detachably attached to the upper surface 1c of the cutting tool body 1 by a screw 4.

When the nozzle part 3 is mounted on the cutting tool body 1, even if the discharge direction is misaligned due to the machining tolerance of the nozzle part 3 and the cutting tool body 1, the nozzle part 3 is rotated around its axis. Since the discharge direction can be finely adjusted by moving it, the discharge direction of the cutting fluid can be accurately directed to the tip 2a of the cutting edge 2.

The tool with an oil hole having such a structure is mounted on a machine tool (not shown) of a machine tool (not shown) by mounting the shank 1a on the machine tool, and the oil supply hose 3c is attached to the machine tool. The cutting fluid supply device (not shown) provided on the side is used for turning.

That is, the cutting oil sent from the cutting oil supply device to the nozzle portion 3 via the oil supply hose 3c is surely directed from the nozzle 3b directed toward the tip 2a side of the cutting edge 2 toward the tip 2a of the cutting edge 2. And it is discharged intensively.

As a result, the discharged cutting oil efficiently cools the cutting edge 2 and enters between the chips generated during cutting and the rake face 1d of the blade portion 1b to exert a lubricating action, thereby cutting chips. To reduce friction due to abrasion.

Therefore, it is possible to suppress the cutting edge 2 from being heated to a high temperature by cutting heat and scraping off the rake face 1d by chips, and to suppress the progress of wear due to the cutting heat and chips. It becomes possible.

As described above, according to the tool with an oil hole having the above-described structure, the cutting oil can be discharged by mounting the nozzle portion 3 on the tool in which the supply path for supplying the cutting oil is not formed in the shank 1a. Therefore, the wear resistance can be greatly improved, and even under severe conditions such as high speed and high feed cutting, the wear of the cutting edge can be suppressed and the tool life can be extended.

Further, it is possible to prevent the situation in which the chips are elongated and entangled with the tool, the machine tool, the work material or the like, which hinders the work and deteriorates the machined surface of the work material. It also becomes possible to promote smooth chip disposal.

Further, even if any one of the nozzle portion 3 and the bite main body 1 is defective, the nozzle portion 3 can be removed and the maintenance work can be efficiently performed for each, and when the replacement is necessary. Since only one of them needs to be replaced, each component can be economically used.

Next, a second embodiment of the tool with oil holes according to the present invention will be described. FIG. 3 is an enlarged view of a main part showing an example of a tool with an oil hole in which a throw-away tip is attached to the tip of the tool body, and in these figures, reference numeral 1
Reference numeral 1 is a tool body, 12 is a throw-away tip, 13 is a nozzle portion, 21 is a supply passage, and 22 is an introduction passage.

In the tool with an oil hole shown in FIG. 3, a supply passage 21 for supplying a cutting fluid is provided in the nozzle body 1 inside the tool body 11.
3 is the same as that of the cutting tool with an oil hole shown in FIG. 1, except that the nozzle portion 13 is provided with an introduction passage 22 communicating with the supply passage 21. It is composed.

As shown in FIG. 3, the supply passage 21 of the cutting tool body 11 is bored in the shank 11a in the longitudinal direction, one end of which is open to the rear end face F side, and the other end is in the vicinity of the blade portion 11b and shown in the upper part of the drawing. It is formed so as to be bent to open at the mounting position of the nozzle portion 13 on the upper surface 11c.

On the other hand, the nozzle portion 13 detachably attached to the bite body 11 has a nozzle 13b which is directed to the tip 12a of the cutting edge of the throw-away tip 12 in the nozzle attachment groove 13aa formed in the nozzle body 13a.
And the introduction path 22 for introducing the cutting fluid supplied from the supply path 21 into the nozzle 13b is formed in the nozzle body 13a.
Is detachably attached to the upper surface 11c of the cutting tool body 11.

As shown in FIG. 3, one end of the introduction path 22 of the nozzle portion 13 is opened to the attachment surface 13c to the cutting tool body 11, and the other end is communicated with the rear end of the nozzle attachment groove 13aa. When the nozzle part 13 is attached to the cutting tool body 11, the supply passage 21 and the nozzle 1 are opened.
3b is formed to be in communication with each other.

In the tool with an oil hole having such a structure, the cutting fluid sent from the cutting fluid supply device to the nozzle portion 13 via the supply passage 21 is introduced into the introduction passage 22 and the cutting edge tip 12a of the throw-away tip 12. The nozzle 13b directed toward the
Is reliably and intensively discharged to the tip 12a of the cutting blade.

Further, even when the cutting fluid is clogged inside the cutting tool body 11 and the supply of the cutting fluid becomes unstable, by removing the nozzle portion 13 from the cutting tool body 11, the supply passage 21 and the nozzle portion of the cutting tool body 11 are removed. 13 introduction paths 2
It is possible to easily and surely remove the cutting chips from 2.

Further, since the nozzle portion 13 is screwed to the cutting tool main body 11, the connecting portion between the supply passage 21 and the introduction passage 22 can be made in a liquid-tight state, so that a good sealing property is obtained when the cutting fluid is supplied. Is ensured and a stable supply of cutting fluid can be achieved.

Next, a third embodiment of the tool with oil holes according to the present invention will be described. As shown in FIGS. 5 and 6, the tool with an oil hole in the present embodiment has a configuration in which the nozzle portion 32 is fixed to the right side surface 31A at the tip of the tool body 31, except for the second It has substantially the same structure as the tool with an oil hole in the embodiment.

As shown in FIG. 7, the nozzle portion 32 is generally constructed by mounting a nozzle 32c in a nozzle mounting groove 32b formed in a nozzle portion main body 32a which is substantially L-shaped in side view. Inside the 32, the nozzle mounting groove 32 b and the supply passage 33 formed in the bite body 31.
An introduction path 34 that communicates with (see FIGS. 5 and 6) is formed.

The supply passage 33 is bored in the shank 31a in the longitudinal direction. One end of the supply passage 33 is bent downward at the rear end of the cutting tool body 31 as shown in FIG.
The other end is formed so as to bend upward in FIG. 6 in the vicinity of the blade portion 31b and open to the right side surface 31A.

The introduction passage 34 extends toward the lower end of the nozzle portion main body 32a so as to intersect with the nozzle mounting groove 32b, and a hole 34a in which a filling plug 35 is arranged at the lower end portion, and the hole 34a.
And a hole 34b that intersects with and is opened in the attachment surface 32A of the nozzle portion main body 32a to the right side surface 31A.

The nozzle portion 3 having the above-mentioned structure
2 is attached to the cutting tool body 31 by a bolt 36 in a state where the hole 34b in the introduction path 34 and the opening to the right side surface 31A of the supply path 33 communicate with each other. At this time, the nozzle 32c is directed to the cutting edge tip 33a of the throw-away tip 33.

In the tool with an oil hole having such a structure, as shown by the chain double-dashed line in FIG. 6, the gripping position when fixing the tool body 31 to the machine tool, that is, the end surface 37 of the tool rest is Since it can be brought close to the tip of the cutting tool body 31, the tool protrusion amount L can be reduced. Therefore, the rigidity of the cutting tool body 31 is increased, the occurrence of chattering can be suppressed, and the processing accuracy at the time of high-speed and high-feed processing can be improved.

Next, a fourth embodiment of the tool with oil holes according to the present invention will be described. As shown in FIGS. 9 and 10, in the tool with oil holes according to the present embodiment, the nozzle portion 42 is fixed to the left side surface 41A of the tool body 41, and the throw-away tip 43 for grooving is used as the throw-away tip. Other than the above configuration, it has substantially the same configuration as the tool with an oil hole in the third embodiment.

Here, the angle formed by the nozzle 42c mounted in the nozzle mounting groove 42b of the nozzle main body 42a and the left side surface 41A of the cutting tool main body 41 is in the range of -15 ° to 15 ° (15 in this embodiment). )) And the nozzle 4
The angle formed by 2c and the upper surface 41B of the cutting tool body 41 is preferably set in the range of 0 ° to 30 ° (5 ° in this embodiment).

The nozzle 42c and the left side surface 4 of the bite body 41
The reason why the angle formed with 1 A is set in the range of −15 ° to 15 ° is that this embodiment assumes that the width and depth of the groove to be machined in the work material is 2 mm. This is because, in this case, if the angle formed is set to an angle exceeding ± 15 °, the cutting fluid discharged from the nozzle portion 42 may not be reliably supplied to the cutting edge tip 43a of the throw-away tip 43.

On the other hand, the angle between the nozzle 42c and the upper surface 41B of the cutting tool body 41 is set in the range of 0 ° to 30 ° for the following reason. That is, when the cutting fluid is ejected at a high pressure, the closer the angle is to 0 °, the higher the braking effect by applying the cutting fluid to the chips from the front. Therefore, the lower limit of the angle formed is set to 0 °.

If the cutting fluid is not ejected at a high pressure, the cutting fluid has a weak braking effect, so that the chips are discharged while making a large curl.
In such a case, if the angle formed is set to an angle exceeding 30 °, the cutting fluid will be discharged from the outside of the curled chips, and the cutting fluid will be obstructed by the curled chips to ensure that the cutting blade tip 43a is at the tip 43a. This is because the supply may not be performed and cutting may not be performed in a good lubrication state.

Since the angles formed by the nozzles 42c and the left side surface 41A and the upper surface 41B of the cutting tool body 41 are set for the above reasons, the dimensions of the groove to be machined and the material of the work material are set. , And can be changed appropriately according to other cutting conditions.

Also in the bite with an oil hole having such a configuration, the cutting fluid sent from the cutting fluid supply device to the nozzle portion 42 via the supply passage 44 passes through the introduction passage 45 and the nozzle 42c in this order. Then, it is reliably and intensively discharged to the cutting edge tip 43a of the throw-away tip 43.

Moreover, the left side surface 41A of the cutting tool body 41,
That is, the nozzle portion 42 is fixed to the side surface on the side where the chip mounting seat 46 is opened, and the left side surface 41A and the upper surface 4 are formed.
Since the angle formed by 1B and the nozzle 42c is set to the above angle, the discharge direction of the cutting fluid from the nozzle 42c approaches the depth direction of the groove formed in the work material.

Therefore, at the time of grooving, the cutting fluid is surely supplied to the inside of the cut groove, effectively cooling the cutting edge, and between the chips generated during cutting and the rake face. It is possible to enter and perform a lubricating action to reduce friction due to scraping of chips, suppress wear of the cutting edge, and extend tool life.

In each of the above-mentioned embodiments, the lever lock is used as the clamp mechanism of the throw-away tip. However, the clamp mechanism is not limited to such a clamp mechanism, and a screw clamp mechanism using a clamp screw is adopted. You may. In such a case, when the nozzle portion is attached to the upper surface of the tool body, there is no restriction that it must be retracted and attached to the base end side while avoiding the lever lock, so that the tool protrusion amount can be reduced, The same effect as described above can be obtained.

Further, since the nozzle portion is detachably attached to the tool main body, the combination of the angle formed between the side surface and the upper surface of the tool main body and the nozzle is changed according to the cutting conditions etc. to discharge the cutting fluid. When it is desired to change the direction of the tool to any direction, it is sufficient to replace only the nozzle section without changing the mounting angle of the tool body to the tool rest.

[0052]

As is apparent from the above description, according to the present invention, the following effects can be obtained.

(A) With the tool with an oil hole according to the present invention , even if one of the nozzle section and the tool body is defective, the nozzle section can be removed and either one replaced. Therefore, each component can be economically used.

(B) In the case of the tool with an oil hole according to claim 1 , even when a tool without a supply passage for supplying a cutting fluid is used in the shank, the wear resistance of the cutting edge is increased. Can be significantly improved and the tool life can be extended.

(C) In the tool with an oil hole according to claim 2, by removing the nozzle part from the tool body, it is easy to remove the chips clogged in the supply path of the tool body and the introduction path of the nozzle part. And it can be done reliably.

(D) In the tool with an oil hole according to the third aspect, by fixing the nozzle part to the side surface of the tip part of the tool body, the gripping position when fixing the tool body to the machine tool is the tool body. The amount of protrusion of the tool can be reduced by approaching the tip of the tool. As a result, the rigidity of the cutting tool body is increased, the occurrence of chattering can be suppressed, and the processing accuracy during high-speed and high-feed processing can be improved.

[Brief description of drawings]

FIG. 1 is an enlarged view of an essential part showing a first embodiment of a tool with oil holes according to the present invention.

FIG. 2 is a perspective view from below of a nozzle body attached to the bite with oil holes.

FIG. 3 is an enlarged view of essential parts showing a tool with oil holes according to a second embodiment of the present invention.

FIG. 4 is a plan view of FIG.

FIG. 5 is a front view showing a tool with oil holes according to a third embodiment of the present invention.

FIG. 6 is a plan view of FIG.

FIG. 7 is a side view of a nozzle portion attached to the tool with the oil hole.

FIG. 8 is a front view of FIG. 7.

FIG. 9 is a front view showing a tool with oil holes according to a fourth embodiment of the present invention.

FIG. 10 is a plan view of FIG.

11 is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

1, 11, 31, 41 bytes Main body 1a, 11a, 31a shank 2 cutting edge 2a, 12a, 33a, 43a (cutting blade) tip 3, 13, 32, 42 Nozzle part 3b, 13b, 32c, 42c nozzle 3c Refueling hose 21, 33, 44 supply path 22, 34, 45 Introduction route

Front page continuation (72) Inventor Yasuo Ishii 1511 Komagaki, Ishishita-cho, Yuki-gun, Ibaraki Mitsubishi Materials Corporation Tsukuba Works (72) Inventor Kazuya Yamazaki 1511 Furumagi, Ishishita-machi, Yuki-gun, Ibaraki Mitsubishi Materials Corporation Company Tsukuba Seisakusho (56) Reference JP-A-7-60507 (JP, A) JP-A-62-34703 (JP, A) JP-A-6-31502 (JP, A) JP-A-8-257807 (JP , A) Japanese Patent Laid-Open No. 10-76404 (JP, A) Actual development 55-21830 (JP, U) Actual development 58-177204 (JP, U) Registered utility model 3002973 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) B23B 27/10

Claims (3)

(57) [Claims] 1. A nozzle body for discharging a cutting fluid toward the tip of the cutting blade is detachably attached to a cutting tool body having a cutting blade provided at the tip of the shank.
The nozzle part has a nozzle mounting groove and
And the refueling hose mounting groove so that it points toward the tip of the cutting edge.
Nozzle and an oil supply ho for supplying cutting fluid to the nozzle
Are mounted so that they are in communication with each other,
Detachably attached to the upper surface of the cutting tool body with screws
And rotate this nozzle part around its axis.
A bite with an oil hole that allows the discharge direction to be finely adjusted by . 2. A nozzle for discharging cutting fluid toward the tip of the cutting blade is detachably attached to a cutting tool body having a cutting edge provided at the tip of the shank.
Inside the cutting tool body, there is a supply path for supplying cutting fluid.
Is formed toward the nozzle part and
It is configured to have an introduction path communicating with the supply path.
The nozzle part is a nozzle mounting groove formed on the nozzle body.
, Attach a nozzle that is directed to the tip of the cutting edge
At the same time, the nozzle body is supplied from the supply passage.
The introduction path for introducing the cutting fluid that has been
It is made up of the
Removably attached, this nozzle part around its axis
The discharge direction can be finely adjusted by rotating the
Tool with an oil hole that can be done. 3. The nozzle portion is an upper surface of the cutting tool body.
Instead of, the tool is fixed to the side surface of the tip of the tool body, and the tool with an oil hole according to claim 1 or 2 .