JPH08206939A - Dust collector of machine tool - Google Patents

Abstract

PURPOSE: To surely suck and remove chips by excellently rolling up the chips even in the vicinity of the tool center where the chips are easily generated, by arranging an exhaust part opening toward the tip side of a dust collecting brush outside of the dust collecting brush, and arranging an air supply device to supply compressed air to this exhaust part. CONSTITUTION: When a work W is machined by a tool 2, compressed air is injected into the tip side of a dust collecting brush 5 from outside of the dust collecting brush 5 by respective exhaust pipes 6, and the compressed air is further sent in the tool center direction, and air in an inside space of the dust collecting brush 5 and a dust collecting case 4 is sucked by an intake air device 7. As a result, since almost all chips are sucked and removed through the inside of the dust collecting case 4 from an opening part 10, remnants of the chips are not generated in the tool vicinity (2) being a position separate from the dust collecting brush 5, or the chips are not scattered from a clearance between the tip of the dust collecting brush 5 and a surface of the work W.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting device for a machine tool used for removing cutting chips generated by the machine tool for cutting.

[0002]

2. Description of the Related Art As a dust collector of this kind, an annular dust collector brush having a tool as a center and an air intake device for sucking air into the inner space of the dust brush are provided. There has been a method in which the cutting dust generated by processing is sucked and removed by operating the.

[0003]

However, in the above-mentioned conventional dust collecting apparatus, especially, chips are likely to remain near the tool center, which is a position away from the dust collecting brush, and the surface of the work is If there is a large gap between the dust collection brush and the tip of the dust collection brush, there is a problem in that the intake air velocity in that gap decreases and the dust collection function declines, and that chips may scatter from the gap to the surface of the workpiece. The problem was to solve such a problem.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a dust collecting apparatus for a machine tool capable of greatly improving the dust collecting function.

[0005]

According to a first aspect of the present invention, there is provided a dust collecting device for a machine tool, wherein a tool holder on which a tool is mounted is provided with a dust collecting case for covering the tool holder with the tool protruding. , The dust collection case is provided with an annular dust collection brush centered on the tool, and the dust collection case is provided with an opening that opens inside the dust collection brush, facing the tip side of the dust collection brush outside the dust collection brush. A compressed air supplied from the exhaust part as claimed in claim 2, wherein the exhaust part is provided with an opening, and an intake device for intake of air in the dust collection case and an air supply device for supplying compressed air to the exhaust part are provided. Is sent to the tool center direction, Claim 3 is a structure in which the exhaust part is a plurality of exhaust pipes, Claim 4 is a structure in which the exhaust pipe is flexible, and Claim 5 is an exhaust pipe. Made of resin And has a means for solving the problems of the above configuration.

[0006]

In the dust collector for a machine tool according to claim 1 of the present invention, compressed air is jetted from the outside of the exhaust part dust collecting brush to the tip side of the dust collecting brush, and further as in claim 2. The compressed air supplied from the exhaust unit is sent toward the tool center, and the suction device sucks air in the dust collection case and the inner space of the dust collection brush.
The air in the dust collecting brush is agitated to wind up the cutting dust in the dust collecting brush, and even if the gap between the tip of the dust collecting brush and the surface of the work is large, the air from the exhaust unit The reduction of the intake air velocity in the gap and the scattering of cutting chips from the gap are prevented.

Further, in the dust collecting apparatus for a machine tool according to claim 3 of the present invention, compressed air is injected from a plurality of exhaust pipes, and the dust collecting apparatus for a machine tool according to claim 4 of the present invention. By using a flexible exhaust pipe, when there is a protruding portion on the surface of the work, even if the protruding portion interferes with the exhaust pipe, the exhaust pipe is bent so as not to hinder the movement of the tool, Further, in the dust collecting apparatus of the machine tool according to the fifth aspect of the present invention, the exhaust pipe is made of resin, so that it is possible to more reliably prevent the exhaust pipe from damaging the protruding portion of the work. .

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a dust collecting apparatus for machine tools according to the present invention will be described below with reference to FIGS.

The dust collecting apparatus 1 shown in FIG. 1 includes a dust collecting case 4 provided on a tool holder 3 to which a tool 2 is mounted, a dust collecting brush 5 which forms an annular shape around the tool 2, and a dust collecting brush 5. A plurality of exhaust pipes 6 serving as exhaust units that open toward the tip side of the dust collection brush 5 on the outside, an intake device 7 that inhales the dust collection case 4, and air that supplies compressed air to each exhaust pipe 6. A supply device 8 is provided.

The tool 2 is an end mill, which is mounted downwardly on a tool mounting portion 9 of a machine tool body (not shown) via a tool holder 3 and is driven to rotate 3
It is movable in the axial direction.

The dust collecting case 4 covers the tool holder 3 with the tool 2 protruding downward, and
The upper end attached to the
Has an opening 10 that is sufficiently larger than the diameter of the. The tool 2 projects from the opening 10 to the outside of the dust collection case.

Further, the other end of the intake hose 11 whose one end is connected to the intake device 7 is connected to the side of the dust collection case 4. This intake hose 11 is used for the tool 2 during processing.
It is formed of a flexible member such as a bellows so that it can follow the movement of the.

The dust collecting brush 5 is made of, for example, a synthetic resin and is provided along the edge of the opening 10 on the bottom surface of the dust collecting case 4. In this state, the dust collecting brush 5 has a height near the tip of the tool 2. It has a length. At this time, the dust collection case 4 is open to the inside of the dust collection brush 5 through the opening 10.

The exhaust pipe 6 is made of a flexible material and is made of resin. The exhaust pipe 6 is provided in the upper end portion of each of the annular air supply passages 12 provided along the outer peripheral edge portion of the bottom surface of the dust collection case 4. Are provided at regular intervals in a state of communicating with each other. Each exhaust pipe 6 has a shape in which the middle portion is bent so that the lower end portion thereof can be opened toward the tip side of the dust collecting brush 5. In this embodiment, as shown in FIG. The book is used.

The other end of a supply hose 13 whose one end is connected to the air supply device 8 is connected to the air supply passage 12. As a result, compressed air from the air supply device 8 is supplied to each exhaust pipe 6. The supply hose 13 is made of a flexible material such as synthetic resin so that it can follow the movement of the tool 2 during processing.

Further, the work W shown in FIG. 1 is a plate made of aluminum and is fixed to the floor plate A, and the groove G is formed by successively lowering the tool 2 while repeatedly linearly moving the tool 2. The grooves G are finally opened on the front and back of the work W.

A dust collecting apparatus 1 for a machine tool having the above structure
While the workpiece W is being processed by the tool 2, the dust collection brushes 5 from the outside of the dust collection brushes 5 are exhausted by the respective exhaust pipes 6.
Of the dust collecting brush 5 by the suction device 7 while injecting compressed air to the tip side of the
The air is sucked into the inner space and the dust collection case 4. At this time, the intake air volume exceeds the exhaust air volume from all the exhaust pipes 6.

As a result, the dust collecting device 1 has the dust collecting brush 5
The air inside is agitated to wind up the chips in the dust collecting brush 5, and even if the gap between the tip of the dust collecting brush 5 and the surface of the work W is large at the beginning of processing, the exhaust pipe 6 The injected air prevents a decrease in intake air velocity in the gap. Therefore, most of the chips are sucked and removed from the opening 10 through the dust collection case 4, and the tool 2 located at a position away from the dust collection brush 5 is removed.
There will be no residual cutting powder in the vicinity, and no scattering of cutting powder from the gap between the tip of the dust collecting brush 5 and the surface of the work W.

Further, in the dust collector 1, as shown in FIG. 3, when the work W is fixed to the floor plate A by a plurality of bolts B and the groove G is formed in the vicinity of the bolts B, the exhaust pipe. 6 and the bolt B may interfere with each other, but since the exhaust pipe 6 is made of a flexible resin, the exhaust pipe 6 does not bend and the movement of the tool 2 is not hindered. . Further, since there is no fear that the exhaust pipe 6 may damage the bolt B, the bolt B
It is also extremely useful for the protruding portion of the work W other than the above.

In the dust collecting apparatus 1, for example, when a mist-like cutting fluid is used, the intake and exhaust pressures of the intake unit 7 and the air supply unit 8 are repeatedly changed, whereby the inside of the dust collecting brush 5 is changed. It is also possible to further enhance the air stirring function.

Further, as another embodiment of the dust collecting apparatus for a machine tool according to the first aspect of the present invention, it is possible to provide an annular exhaust portion concentrically outside the annular dust collecting brush.

[0022]

As described above, according to the dust collecting apparatus of the machine tool according to the first and second aspects of the present invention, the air is ejected from the exhaust portion and the air is sucked into the dust collecting brush during the machining. , It is possible to stir the air in the dust collecting brush and wind up the cutting dust in the dust collecting brush.
Even in the vicinity of the tool center where the cutting powder is likely to remain, the cutting powder can be rolled up well and can be reliably sucked and removed, and even when the gap between the tip of the dust collecting brush and the surface of the work is large, The air from the exhaust portion can surely prevent a decrease in intake air velocity in the gap and scattering of cutting chips from the gap, and the dust collecting function as a whole can be greatly improved.

Further, according to the dust collector of the machine tool of the third aspect of the present invention, since a plurality of exhaust pipes are adopted as the exhaust unit, even if the amount of compressed air sent from the air supply unit is small. According to the dust collector of the machine tool of the present invention, which is capable of performing sufficient injection to obtain the above effect, since the exhaust pipe having flexibility is adopted, When there is a protruding portion, even if the protruding portion interferes with the exhaust pipe, it is possible to prevent the situation in which the movement of the tool is hindered by bending the exhaust pipe, and further according to claim 5 of the present invention. According to the dust collector of the machine tool, since the exhaust pipe made of resin is adopted, in addition to the effect of claim 4, it is possible to more reliably prevent the situation where the protruding portion of the work is damaged by the exhaust pipe. But Kill.

[Brief description of drawings]

FIG. 1 is a sectional view illustrating an embodiment of a dust collecting apparatus for a machine tool according to the present invention.

FIG. 2 is an explanatory plan view showing the arrangement of tools, a dust collecting brush, an exhaust pipe, and the like.

FIG. 3 is a perspective view showing a state in which a work is fixed to a floor plate with bolts.

[Explanation of symbols]

 1 Dust collector 2 Tool 3 Tool holder 4 Dust collection case 5 Dust collection brush 6 Exhaust pipe (exhaust part) 7 Intake device 8 Air supply device 10 Opening part

Claims (5)

[Claims] 1. A tool holder to which a tool is attached is provided with a dust collecting case that covers the tool holder with the tool in a projecting state, and the dust collecting case is provided with a dust collecting brush that forms an annular shape around the tool and also collects dust. The case has an opening that opens inside the dust collecting brush, and the exhaust part that opens toward the tip of the dust collecting brush is provided outside the dust collecting brush. A dust collector for a machine tool, comprising an air supply device for supplying compressed air to the machine part. 2. The dust collecting apparatus for a machine tool according to claim 1, wherein the compressed air supplied from the exhaust unit is sent toward the center of the tool. 3. The dust collecting apparatus for a machine tool according to claim 1, wherein the exhaust unit is a plurality of exhaust pipes. 4. The dust collecting apparatus for a machine tool according to claim 3, wherein the exhaust pipe has flexibility. 5. The dust collecting apparatus for a machine tool according to claim 4, wherein the exhaust pipe is made of resin.