JPH1177475A - Cutoff layer forming device for work device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely suppress dispersion of chip taken out from a machine tool by making coolant flow while being slewed. SOLUTION: A cutoff layer forming device 20 is provided with an annulus ring shaped device main body 21 whose outer wall is connected to a supply pipe 10 through four pipe connecting parts 21a arranged along a tangent direction at equal spaces. An annular coolant leading-in passage for leading coolant is formed in the device main body 21, and a coolant outlet is annularly opened along a circumferential direction to one end part of an axial direction of the device main body 21. The coolant is led from the supply pipe 10 so as to generate flow S1 along a circumferential direction in a liquid leading-in passage, and is ejected from the coolant outlet as a turning flow S2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barrier layer forming apparatus for a processing apparatus.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 3-234441 discloses an umbrella member which is large enough to cover a processing portion of a machine tool and has a liquid passage through which a liquid is supplied. Disclosed is a device for preventing chips and chips generated at the time of processing from being scattered by causing a liquid to flow in a curtain shape from a portion.

[0003]

However, in the prior art described above, if the nozzle portion has a large throttle, the liquid scatters in the form of a mist, and if the nozzle portion has a small throttle, the liquid must be ejected at a certain pressure. The liquid flows non-uniformly, and the dropping action of chips and the like is reduced, and the pressure is applied to the liquid, resulting in complicated equipment and high cost.

Conventionally, there has not been proposed a configuration in which a liquid is ejected from a nozzle portion while being swirled in a circumferential direction.

[0005] The present invention has been made in view of the above problems,
An object of the present invention is to provide a barrier layer forming apparatus of a processing apparatus capable of generating a curtain-shaped swirling flow in a liquid and reliably preventing scattering of chips.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems and attain the object, a barrier layer forming apparatus of a processing apparatus according to the present invention has the following arrangement. That is, the apparatus has a device main body having an annular liquid introduction passage for introducing a liquid, a throttle section is provided at a liquid outlet of the liquid introduction passage opening at one end of the device main body, and a liquid introduced into the liquid introduction passage is provided. Liquid flow generating means for generating a flow along the circumferential direction of the liquid introduction passage and ejecting the flow from the outlet is provided.

[0007]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

[Schematic Configuration of Machine Tool] FIG. 1 is an overall view schematically showing an entire machine tool to which a barrier layer forming apparatus according to an embodiment of the present invention is applied.

As shown in FIG. 1, a base 2 of a machine tool 1 is provided.
A jig 4 is arranged on the upper side, and a workpiece 6 is placed on the jig 4.
Has been fixed. A support 3 is provided at one end of the base 2, and a machining center 7 is disposed above the support 3. The machining center 7 can appropriately select a necessary tool 8 from a plurality of types of tools, and can move the tool 8 up and down along the column 3 while rotating the tool. And perform the necessary cutting. Above the jig 4, a blocking layer forming device 20 supported by the arm 5 fixed to the column 3 is arranged. This barrier layer forming apparatus 20 includes a supply pipe 1
The cutting oil (coolant) is supplied from the pump 9 via the “0”.

[Configuration of Blocking Layer Forming Apparatus] FIG. 2 is an external view showing a blocking layer forming apparatus according to an embodiment of the present invention.
FIG. 3 is a side view of FIG.

As shown in FIGS. 2 and 3, the barrier layer forming apparatus 20 has an annular apparatus main body 21 and the apparatus main body 2 is provided.
The outer wall 1 is provided at equal intervals along the tangential direction.
The supply pipe 10 is connected via two pipe connection parts 21a. An annular coolant introduction passage for introducing a coolant is formed inside the apparatus main body 21 as described later, and a coolant outlet 22 is formed at one axial end of the apparatus main body 21 along the circumferential direction. It is open to.

The coolant is introduced from the supply pipe 10 so as to generate a flow S1 along the circumferential direction in the liquid introduction path, and is ejected from the coolant outlet 22 as a swirling flow S2 like a cylindrical curtain.

FIG. 4 is a sectional view of FIG. FIG. 5 is a sectional view taken along line AA of FIG.

As shown in FIG. 4 and FIG.
The first cylindrical portion 2 is located outside the annular first cylindrical portion 23.
The coolant introduction passage 25 is formed between the outer wall of the first cylindrical portion 23 and the inner wall of the second cylindrical portion 24 in a double structure in which the second cylindrical portion 24 having a diameter larger than 3 is disposed. ing. The coolant outlet 22 is an annular opening defined by a first cylindrical portion 23 and a second cylindrical portion 24 at one end of the apparatus main body 21. At the outer wall of the first cylindrical portion 13 near the coolant outlet 22, a convex throttle portion 26 is formed for reducing the opening area of the coolant introduction passage and increasing the pressure at which the coolant is ejected. On the other hand, the opening formed in the other end of the apparatus main body 21 is
7 is closed. The throttle section 26 is located at the coolant outlet 2
The coolant is formed parallel to the wall surface of the coolant introduction passage 25 so that the coolant ejected as a swirling flow from 2 is directed substantially directly below.

The pipe connecting portion 21a is connected to a coolant introduction port 29 provided on an outer wall of the second cylindrical portion 24, is provided along a tangential direction of the coolant introduction passage 25, and circulates the coolant inside the coolant introduction passage 25. Turn along the direction.

A rectifying member 28 for rectifying the flow of the coolant is provided between the coolant outlet 22 and the pipe connecting portion 21a inside the coolant introducing passage 25.

FIG. 6 is a sectional view taken along line BB of FIG.

As shown in FIG. 6, the rectifying member 28 is an annular member, and has a plurality of communication holes 28a along its circumferential direction.
Are formed. The rectifying member 28 partitions the coolant introduction passage 25 into two rooms in the up-down direction, and communicates these two rooms via the communication holes 28a. Since the rectifying member 28 mainly adjusts the pressure of the coolant introduced into the coolant introduction passage 28, the turbulent flow of the coolant and the variation of the vertical flow are made uniform.

The hollow portion 30 of the first cylindrical portion 23 allows a tool 8 to be inserted by the machining center 7 shown in FIG. Therefore, during machining, the tool and the workpiece are surrounded as a blocking layer by a cylindrical curtain-shaped swirling flow of the coolant ejected from the coolant outlet 22, so that scattering of chips and the like can be reliably suppressed.

[Other Embodiments] FIG. 7 is a sectional view showing a barrier layer forming apparatus according to another embodiment of the present invention. FIG.
FIG. 8 is a sectional view taken along line CC of FIG. 7.

As shown in FIGS. 7 and 8, in the barrier layer forming apparatus of another embodiment, a coolant distribution member 31 is provided in a lower room inside a coolant introduction passage 25 partitioned by a flow regulating member 28. . This coolant distribution member 31
The lower part of the inside of the coolant introduction passage 25 is divided into two along the circumferential direction, and the coolant is divided into two systems via the flow regulating member 28. Further, the coolant distribution member 31 forms two coolant outlets 32 and 33 along the circumferential direction. In other words, in the coolant introduction passage 25 partitioned by the coolant distribution member 31, the coolant jetted directly below through the outer passage becomes a curtain-shaped swirling flow S3 for preventing scattering of chips,
The coolant jetted on the inverted cone through the inner passage is supplied as a curtain-shaped swirling flow S4 to the machining area of the tool, and is used for lubrication and cooling of the machining area. Accordingly, scattering of chips and the like during processing can be reliably suppressed, and lubrication and cooling of the processing portion can be ensured.

As for the other components, the same members as those of the embodiment described with reference to FIGS.

The present invention can be applied to modifications or variations of the above embodiment without departing from the spirit thereof.

[0024]

As described above, according to the present invention,
By generating a flow along the circumferential direction of the liquid introduction passage in the liquid introduced into the liquid introduction passage and ejecting it from the outlet,
A curtain-shaped swirling flow can be generated in the liquid, and the scattering of chips can be reliably prevented.

[0025]

[Brief description of the drawings]

FIG. 1 is an overall view schematically showing an entire machine tool to which a barrier layer forming apparatus according to an embodiment of the present invention is applied.

FIG. 2 is an external view showing a barrier layer forming apparatus according to an embodiment of the present invention.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a sectional view of FIG. 3;

FIG. 5 is a sectional view taken along line AA of FIG. 3;

FIG. 6 is a sectional view taken along line BB of FIG. 4;

FIG. 7 is a cross-sectional view illustrating a barrier layer forming apparatus according to another embodiment of the present invention.

8 is a sectional view taken along the line CC of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Machine tool 2 ... Base 3 ... Column 4 ... Jig 5 ... Arm 6 ... Workpiece 7 ... Machining center 8 ... Tool 20 ... Blocking layer forming apparatus 21 ... Device main body 23 ... 1st cylindrical part 24 ... 2nd cylindrical part 25: Coolant introduction passage 28: Rectifying member

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masato Matsumi 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd.

Claims (7)

[Claims] 1. An apparatus main body having an annular liquid introduction passage for introducing a liquid, a throttle section is provided at a liquid outlet of the liquid introduction passage opening at one end of the apparatus main body, and the liquid introduction passage is introduced into the liquid introduction passage. A liquid flow generating means for generating a flow of the liquid in the circumferential direction of the liquid introduction passage and ejecting the liquid from the outlet. 2. The apparatus main body, wherein a second cylindrical portion having a larger diameter than the first cylindrical portion is disposed outside the first annular cylindrical portion, and an outer wall of the first cylindrical portion and an inner wall of the second cylindrical portion. 2. The liquid introduction passage is formed between the first and second liquid supply passages.
4. A barrier layer forming apparatus of the processing apparatus according to 4. 3. The blocking layer forming apparatus of a processing apparatus according to claim 1, wherein the throttle portion is formed so that the liquid ejected from the liquid outlet is directed in a predetermined direction. . 4. The liquid flow generating means according to claim 1, wherein said liquid flow generating means has a liquid introduction port provided in said apparatus main body and for introducing said liquid along a circumferential direction of said liquid introduction passage. An apparatus for forming a barrier layer of the processing apparatus according to claim 1. 5. The rectifying means for rectifying the flow of the fluid between the liquid outlet and the fluid introduction port in the liquid introduction passage. Blocking layer forming device of processing equipment. 6. The liquid is a coolant used for machining, and the throttle portion is provided in a curtain-like liquid flow for preventing scattering of cuttings, provided inside the curtain film, and supplied to a processing portion. 6. The barrier layer forming apparatus for a processing apparatus according to claim 1, wherein the barrier layer forming apparatus forms a liquid flow. 7. The apparatus according to claim 1, wherein a tool is inserted into a hollow portion of the apparatus main body so as to be insertable into the machine tool.