JPH08267337A - Suction eliminator of chips etc. - Google Patents

Abstract

PURPOSE: To eliminate chips, etc., by suction force efficiently and surely without leaving them behind in the machined hole of a work. CONSTITUTION: This suction eliminator is provided with a cover 13 covering the machining surface of a work 1, a suction duct 14 connected so as to be opened to an inner part of this cover 13, a secondary air jetting air nozzle 15 attached to the inner part of the cover 13 in response to a machine hole 18 of the work 11, and a rotative driving mechanism 24 driving this air nozzle rotatively around the shaft, respectively. In this constitution, secondary air is blown out as rotating the air nozzle, while this secondary air is equally blown out to every comer of the machined hole 18, flying it upward without leaving any chips or the like behind, and thus the chips are drawn into the suction duct 14 by suction force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention vacuums chips and chips remaining in a machining hole of a workpiece during machining.
The present invention relates to a device for sucking and removing by utilizing.

[0002]

2. Description of the Related Art Conventionally, there is a device for collecting chips and chips generated during machining of a machine tool or the like by utilizing a vacuum. This suction device is constructed as follows.

As shown in FIGS. 2 and 3, chips 3 are scattered in a machining hole 2 formed by machining a work 1 and the chips 3 are sucked and collected by a suction head 4.

The suction head 4 has a suction duct (not shown) connected to a cover 5 for covering the periphery of the processed hole 2, and an air nozzle 7 disposed in the cover 5 blows off secondary air from an air pipe 6 to cut it. While the powder 3 is being blown off, it is sucked and transferred to a recovery device (not shown) by the vacuum acting on the suction duct.

[0005]

However, according to this device, a plurality of injection ports 8 formed in the air nozzle 7 are formed at equal intervals so as to inject the secondary air in the horizontal direction or in the obliquely downward direction. However, in this case, depending on the shape of the processed hole 2, a part where the secondary air does not directly collide comes out, and the chips 3 in this part are not well blown off,
Even if suctioned by vacuum, it sometimes remained inside the processed hole 2.

In particular, when the air nozzle 7 is fixed in position, when a large number of workpieces 1 having the same shape are suctioned and washed, the chips 3 always remain in the same position, and the chips 3 are inspected after the washing and removed again. There is a problem that work efficiency is poor.

It is an object of the present invention to surely blow off chips and the like inside a processed hole of a work, and efficiently remove them by suction.

[0008]

A first aspect of the present invention is directed to a cover for covering a processed surface of a work, a suction duct connected so as to open inside the cover, and a cover corresponding to a plurality of processed holes of the work. It is provided with a plurality of air nozzles for ejecting secondary air, which are respectively mounted inside, and a drive mechanism for rotationally driving the air nozzles around an axis.

In a second aspect based on the first aspect, the nozzle head at the tip of the air nozzle is uniformly formed with a plurality of ejection ports.

A third aspect of the present invention is the drive mechanism according to the first or second aspect, wherein the rotation shaft of the air nozzle is rotatably supported by the cover, and the air cylinder is connected to the arm provided on the rotation shaft. An electromagnetic switching valve that controls the supply of air to expand and contract this air cylinder is provided.

[0011]

In the first aspect of the invention, the cover is installed on the processed surface of the work, the inside of the cover is sucked by the suction duct, and the secondary air is jetted from the air nozzle into the processed hole.

The air nozzle is rotated about its axis by a drive mechanism, so that the secondary air ejected from the air nozzle ejects the secondary air evenly over almost the entire inside of the machining hole, whereby the bottom of the machining hole, etc. The chips, chips and the like scattered on the surface are blown up and rise up, and the vacuum from the suction duct acting inside the cover sucks them into the suction duct and removes them.

Therefore, it is possible to surely and efficiently suck and wash every corner without leaving chips and the like inside the processed hole.

In the second aspect of the invention, since the air nozzles are formed with a plurality of ejection openings evenly, the secondary air is evenly ejected over the entire circumference of the machined hole only by slightly rotating the air nozzle around the axis. be able to.

In the third aspect of the invention, the rotation shaft of the air nozzle is reciprocally rotated by the expansion and contraction of the air cylinder through the arm. Therefore, a part of the secondary air can be used to drive the air cylinder, and the rotation drive is possible. There is no need to provide a separate power source for the mechanism.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, in which a cover 13 for covering a processed surface 12 of a work 11 is provided, and a suction duct 14 is connected to the cover 13 to cover the work 13.
Aspirate the internal space of.

The cover 13 is provided with a plurality of air nozzles 15. The air nozzles 15 are arranged corresponding to the processing holes 18 formed in the work 11. The nozzle head 19 at the tip of the air nozzles 15 has a plurality of ejection ports 20 uniformly. It is formed around the entire circumference at various intervals. In this embodiment, the spout 20 is horizontally 1
A total of three are formed at 20 ° intervals.

The nozzle head 19 of the air nozzle 15
Extends to near the bottom of the processed hole 18 and injects secondary air into the inside.

On the other hand, in the portion where the air nozzle 15 penetrates the cover 13, the rotary shaft 22 of the air nozzle 15 is rotatably supported around the shaft by the nozzle bearing 21, and the arm 23 is fixed to a part of the rotary shaft 22. , This arm 2
An air cylinder 24 is connected to 3. Air cylinder 24
The base end of is pivotally attached to a part of the cover 13 via a support shaft 25, and the rotary shaft 22 is reciprocally rotated via an arm 23 by expansion and contraction of the air cylinder 24.

A part of the secondary air sent into the air nozzle 15 is selectively supplied to and discharged from the cylinder chamber of the air cylinder 24 by the electromagnetic switching valve 26, whereby the air cylinder 24 expands and contracts. The electromagnetic switching valve 26 is selectively switched at a constant cycle by a signal from a controller (not shown),
The air cylinder 24 is expanded and contracted.

Reference numeral 28 in the drawing denotes an air pipe for supplying the secondary air to the air nozzle 15, which is connected to an accumulator (not shown) which stores the secondary air.

The operation will be described next.

When the cover 13 is positioned on the predetermined processing surface 12 of the work 11, the air nozzle 15 is set at the center of the processing hole 18, and the suction duct 14 sucks a vacuum to the internal space of the cover 13.

On the other hand, when the air cylinder 24 is driven to expand and contract, the rotary shaft 22 reciprocally rotates about the axis of the bearing 21, and the air nozzle 1 ejects secondary air from the nozzle head 19.
5 rotates horizontally intermittently.

Therefore, regarding the inside of the processed hole 18,
Secondary air is evenly ejected from the ejection port 20 over the entire circumference thereof, and blows up the chips 30 scattered inside. The chips 30 soared up in this manner are sucked into the suction duct 14 by the vacuum acting on the inner space of the cover 13.

In this case, since the nozzle head 19 of the air nozzle 15 intermittently reciprocates and the secondary air is ejected from the plurality of ejection ports 20 to the entire inner circumference of the processing hole 18, the secondary air is left unblown. The chips 30 and the like having no region and clogged in a narrow gap inside the machined hole 18 can be reliably lifted up and sucked by vacuum.

In this embodiment, since the secondary air can be jetted over the entire circumference of the machined hole 18 even if the number of the jet ports 20 is reduced to three, each jet port 2 is reduced by the number of holes as compared with the conventional one.
The air flow rate from 0 can be increased, and the chips 30 can be reliably blown off by a strong air blow.

Further, in this embodiment, since the air cylinder 24 for rotating the air nozzle 15 can be driven by utilizing the secondary air ejected from the air nozzle 15, it is not necessary to separately provide a pressure source.

[0029]

According to the first aspect of the present invention, the air nozzle rotates about the axis by the drive mechanism, and the secondary air ejected from the air nozzle ejects the secondary air evenly over almost the entire inside of the machining hole. As a result, the chips and other particles scattered at the bottom of the machined hole are surely blown up to the corners of the machine, and then blown up, and are sucked by the vacuum from the suction duct that acts on the inside of the cover. It is possible to reliably and efficiently perform suction cleaning without leaving chips and the like.

According to the second aspect of the invention, since the plurality of ejection ports are formed uniformly in the nozzle head of the air nozzle, the air nozzle is evenly rotated over the entire axis of the machined hole by rotating the air nozzle slightly around the axis. The next air can be injected, and the amount of injection from each ejection port can be increased, and chips and the like can be reliably blown off by the strong ejection air.

According to the third aspect of the invention, the axis of rotation of the air nozzle is reciprocally rotated via the arm by the expansion and contraction of the air cylinder. Therefore, part of the secondary air can be used to drive the air cylinder, Since it is not necessary to separately provide a power source for the rotary drive mechanism, the configuration can be simplified and omitted.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a conventional example.

FIG. 3 is a plan view of the same.

[Explanation of symbols]

 11 Work 12 Processed Surface 13 Cover 14 Suction Duct 15 Air Nozzle 18 Machining Hole 19 Nozzle Head 20 Jet

Claims (3)

[Claims] 1. A cover for covering a work surface of a work, a suction duct connected to the inside of the cover so as to open therein, and a plurality of secondary devices respectively mounted inside the cover corresponding to a plurality of work holes of the work. A suction removing device for cutting chips and the like, comprising an air nozzle for ejecting air and a drive mechanism for rotationally driving the air nozzle around an axis. 2. The suction removing device for chips and the like according to claim 1, wherein the nozzle head at the tip of the air nozzle is uniformly formed with a plurality of ejection ports. 3. The drive mechanism is configured such that a rotary shaft of an air nozzle is rotatably supported by a cover, an air cylinder is connected to an arm provided on the rotary shaft, and air supply is controlled so as to expand and contract the air cylinder. The suction removal device for chips and the like according to claim 1 or 2, which is configured by providing an electromagnetic switching valve.