JP2003305621A - Chip collecting device of machine tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically and positively remove chips remaining on a work piece upon completion of machining. <P>SOLUTION: Upon completion of machining, a dust collection unit 41 is mounted to a rotating main shaft 8 of a machining center and a dust collection connector 42 using an automatic tool changer. While jetting a compressed air toward the work piece 37 from a compressed air injection pipe 52 of the dust collection unit 41, the chip is sucked and removed together with the compressed air via a suction head 59 and a suction pipe 51. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip dust collecting apparatus for machine tools, and more particularly to a chip dust collecting apparatus which is detachably attached to a spindle of a machining center having an automatic tool changing function. The present invention relates to a technology for automatically collecting and removing chips left on the top.

[0002]

2. Description of the Related Art Various types of chip dust collectors for machine tools have been proposed so far. For example, JP-A-7
In the chip removing device for machine tools described in Japanese Patent Laid-Open No. 108435, when the dust collecting attachment 70 for sucking chips is attached to the tip of the main shaft, the connecting pipe 36A of the dust collecting attachment 70 causes the suction pipe path 72 to move. It is connected to the nozzle connecting portion 72A of No. 1, and the blower 75 can suck and discharge the chips.

[0003]

[Patent Document 1] Japanese Patent Laid-Open No. 7-108435 (FIGS. 6 to 10)

[0004]

However, the above-described conventional chip collecting apparatus for machine tools merely sucks chips, and therefore, the chips cannot be reliably removed in some cases.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art and to automatically and surely remove the chips remaining on the workpiece after completion of machining. The present invention is to provide a chip dust collecting device.

[0006]

According to a first aspect of the present invention, which solves the above-mentioned problems, a spindle head which is movable relative to a workpiece, and a rotatably arranged spindle head are provided. What is claimed is: 1. A chip dust collecting apparatus for a machine tool, comprising a rotating spindle to which a tool is detachably attachable by an automatic tool changing device, the dust collecting connector being attached to the spindle head, and the automatic tool changing device. A dust collection unit detachably attachable to the rotary spindle and the dust collection connector, wherein the dust collection connector is connected to a compressed air intake pipe to which a compressed air intake duct is connected and to a chip discharge duct. The dust collection unit has a fixed suction pipe, and the dust collection unit is detachably attachable to the rotary spindle, and the dust collection unit has the pressure sensor when the holder is attached to the rotary spindle. A compressed air ejecting pipe that is fitted to an air intake pipe and ejects compressed air toward the workpiece and that is supported by the holder, and the fixed suction pipe when the holder is attached to the rotary spindle. Mating,
A suction pipe supported by the holder for sucking the compressed air jetted toward the workpiece together with the chips.

That is, since the chip collecting apparatus for machine tools according to the first aspect of the present invention sucks the chips while blowing the compressed air, it is possible to reliably remove the chips remaining on the workpiece or the like. .

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION First, a machine tool to which the present invention is applied will be described with reference to FIGS.

1 and 2, reference numeral 1 denotes a bed, on which a machining center main body 2 is placed. The machining center main body 2 includes an automatic tool changer (ATC) 3 and a spindle head 4. Have An openable hood device 5 is provided on the spindle head 4. The ATC3 is a magazine 6 that stores tools.
And an arm 7 for exchanging tools. A rotary spindle 8 is rotatably attached to the spindle head 4. A tool holder 9 is fixed to the rotary spindle 8, and a cutting tool 10 is fitted to the tool holder 9.

The opening / closing hood device 5 provided on the spindle head 4 has a hood 11, which is provided so as to surround the rotary spindle 8, the tool holder 9 and the cutting tool 10. A chip discharge duct 12 is connected to the hood 11, and communicates with the dust collector 13 via the chip discharge duct 12.

Next, an embodiment of a chip dust collecting apparatus for machine tools according to the present invention will be described with reference to FIGS. 3 to 5.

In FIG. 3, reference numeral 40 indicates a chip dust collector, which is a detachable dust collecting unit 41.
And a dust collecting connector 42. A flange 43 is provided at one end of the fixed suction pipe 61 of the dust collecting connector 42, and the flange 43 is attached to the spindle head 4 by bolts 44, 44 ... 44.

A chip discharge hole 45 and a compressed air intake hole 46 are formed in the lower wall of the fixed suction pipe 61. A chip discharge pipe 47 is joined to the outlet of the chip discharge hole 45, and a chip discharge duct 48 is connected to the chip discharge pipe 47. An elbow-shaped compressed air intake pipe 49 is fitted in the compressed air intake hole 46, and a compressed air intake duct 50 is connected to the inlet end of this pipe, while a fixed suction pipe 61 is connected to the outlet end. It is piped in the center and the outlet end is open.

One end of the suction pipe 51 of the dust collecting unit 41 is fitted into the open end of the fixed suction pipe 61. A compressed air ejection pipe 52 is concentrically arranged inside the suction pipe 51, and one end of the compressed air ejection pipe 52 is fitted inside the one end of the compressed air intake pipe 49.

A support arm 53 in a direction orthogonal to the pipe axis is joined to the side wall of the suction pipe 51 by welding.
A holder 54 having a disk shape is provided on the upper end of the support arm 53.
Are fixed by mounting screws 55, and grooves 56 are formed on the outer peripheral surface of the holder 54 over the entire circumference. The groove 56 is formed so that it can be held by the arm 7 of the ATC 3. The holder 54 has an outer taper 58 that can be fitted into the taper hole 57 of the rotary spindle 8.

A suction head 59 is attached to the tip of the suction pipe 51. This suction head 59
A swinging motion can be performed up and down around a horizontal axis that is orthogonal to the suction pipe 51.

Further, as shown in FIG. 4, the suction pipe 51 may be elbow-shaped. This suction pipe 5
1 is closed at one end and the suction head 5 is attached to the side wall.
9 is attached so that it can swing to the left and right about the vertical tube axis of the suction tube 51.

Further, as shown in FIG. 5, the tip of the inner surface of the suction head 59 is formed so that the inner diameter gradually decreases toward the tip, and is provided inside the suction head 59. Compressed air can also be discharged through the flow path 60.

Next, the operation of removing the chips remaining on the work piece 37 after processing will be described with reference to the above embodiment. The dust collecting unit 41 is attached to the rotary main shaft 8 and the dust collecting connector 42 using the arm 7 of the ATC 3. The spindle head 4 is moved with respect to the workpiece 37, and the suction head 59 is brought close to the portion where the chips remain.
The chips remaining on the work piece 37 and the like are removed by sucking the chips while blowing compressed air from the suction head 59.

[0020]

As described above, according to the present invention, the ATC is applied to the dust collecting connector attached to the spindle head.
Since the dust collection unit can be attached and detached by using the arm, the chips that are not collected during the machining operation and remain on the workpiece after machining can be removed without manual labor. Further, since the chips are sucked in while blowing the compressed air, it is possible to reliably remove the chips remaining on the workpiece or the like.

[Brief description of drawings]

FIG. 1 is a front view schematically showing the structure of a machining center to which a chip collecting device for machine tools of the present invention is applied.

FIG. 2 is a side view of the machining center shown in FIG.

FIG. 3 is a side sectional view showing a main part of an embodiment of a chip dust collecting apparatus for machine tools according to the present invention.

FIG. 4 is a plan sectional view showing a first modified example of the machine tool dust collecting apparatus shown in FIG. 3;

5 is a side sectional view showing a second modified example of the machine tool dust collecting apparatus shown in FIG. 3;

[Explanation of symbols]

1 bed 2 Machining center body 3 Automatic tool changer (ATC) 4 spindle head 5 Openable hood device 6 magazines 7 arms 8 rotating spindle 10 cutting tools 11 food 12 Chip discharge duct 13 Dust collector 37 Workpiece 40 Chip collecting device 41 Dust collection unit 42 Dust collector 45 Chip discharge hole 46 Compressed air intake hole 47 Chip discharge pipe 48 Chip discharge duct 49 Compressed air intake pipe 50 Compressed air intake duct 51 Suction tube 52 Compressed air jet pipe 53 Support arm 54 holder 56 groove 57 Taper hole 58 outer taper 59 Suction head 61 Fixed suction pipe

Claims (4)

[Claims] 1. A spindle head which is movable relative to a work piece, and a rotary spindle which is rotatably disposed on the spindle head and on which a tool can be removably attached by an automatic tool changer. A chip dust collector for a machine tool, comprising: a dust collecting connector attached to the spindle head; and a dust collecting unit detachably attachable to the rotary spindle and the dust collecting connector by the automatic tool changing device. ,
The dust collecting connector includes: a compressed air intake pipe to which a compressed air intake duct is connected; and a fixed suction pipe to which a chip discharge duct is connected, and the dust collection unit is attached to the rotary spindle. A detachably attachable holder, which is fitted to the compressed air intake pipe when the holder is attached to the rotary spindle and ejects compressed air toward the workpiece, and is supported by the holder. A compressed air ejection pipe and a holder that is fitted to the fixed suction pipe when the holder is attached to the rotary spindle and sucks the compressed air ejected toward the workpiece together with the chips, and is supported by the holder. And a suction pipe that has been cut. 2. The compressed air intake pipe is arranged inside the fixed suction pipe, and the compressed air ejection pipe is arranged inside the suction pipe. The chip dust collector for machine tools described in. 3. The dust collecting unit further includes a suction head attached to the tip of the suction pipe and opening toward the workpiece to suck the compressed air together with the chips. The chip dust collecting apparatus for a machine tool according to claim 1, wherein the suction head is capable of swinging up and down about a horizontal axis perpendicular to the suction pipe. 4. The suction head is formed such that an inner surface thereof has an inner diameter gradually decreasing toward a tip thereof, and the compressed air flows through a flow passage provided inside the suction head. It is ejected via.
A chip dust collector for a machine tool according to any one of items 1 to 3.