JPH0957568A - Chip recovery device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely remove and recover a chip by projecting a linear member out of a nozzle member in the prescribed direction by a stroke of a piston and at the same time blowing the secondary air from the nozzle member, when the secondary air is supplied in a cylinder. SOLUTION: A wire 16 is projected outward from a nozzle hole 5a of a nozzle 5 corresponding to a stroke of a piston 14, extends to a prescribed position in a work, and thrusts a chip (C), etc., caught in a lateral hole 9. A cylinder chamber (B) in the bottom of the piston 14 is communicated with the top cylinder chamber (A) via a communication path 14a, a ring groove 14b, the large- diameter part of the cylinder 12, and a hole 11d of an adapter 11 which are provided in the piston 14 at the lowest limit of the piston 14. The secondary air is thrum blown out from the nozzle hole 5a of the nozzle 5 via the large- diameter path 11e and the small-diameter path 11f, the thrust chip (C)X, etc., is scattered, and at the same time sucked by a suction duct 8 so as to be recovered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip collecting device that scatters, sucks and collects chips generated by machining when a large number of works of the same shape are cut.

[0002]

2. Description of the Related Art In the case of cutting a large amount of works, for example, works of the same shape such as an engine head, as a chip collecting device for scattering, sucking and collecting chips generated by the cutting of the work. For example, there is one shown in FIG.

To explain this, the cover 4 which covers the machined recessed portion 1a of the workpiece 1 is positioned by means of the guide pins 3 which are inserted into the guide holes 2 provided at the corners of the workpiece 1 and the like. It is set in place. A pipe 6 into which a nozzle 5 is screwed is fixed to a cover 4 by a nut 7, and a suction duct 8 is attached. Secondary air is supplied to the pipe 6, and the suction duct 8 is connected to a suction device (not shown). Chips C generated by the cutting process are scattered on the bottom 1a of the machining recess of the workpiece 1, and these chips C are blown off by the secondary air blown from the nozzle 5a of the nozzle 5 screwed into the pipe 6. The particles are scattered, sucked by the suction duct 8 and collected by the suction device.

[0004]

As described above, the chip collecting device for collecting the chips generated by the cutting work of the workpiece blows off the chips with the secondary air blown from the nozzle 5a of the nozzle 5 and sucks them. It is designed to be sucked from the duct 8 and collected, but during cutting, scattered chips are
If it is caught in a narrow space in the work or is caught in the recess, there is a problem that the cutting chips C that are not sucked and not collected by the secondary air remain in the processing recess of the work 1.

In order to solve such a problem, an object of the present invention is to extend the filament member toward the cutting chips together with the secondary air from the nozzle to surely remove and collect the cutting chips. To do.

[0006]

A first aspect of the present invention is to provide a cover set at a predetermined position of a work, a nozzle member and a suction duct attached to the cover, a means for supplying secondary air to the nozzle member, and a suction member. In a chip collecting device, which is equipped with a suction means connected to a duct, scatters the chips in the work with secondary air blown out from the nozzle member, and sucks and collects the chips from the suction duct. A cylinder connected to communicate with the chamber, a piston that is slidably fitted in the cylinder, a spring that biases the piston in one direction against the secondary air, and a base end fixed to the piston. The linear member, the passage means for guiding the tip of the linear member to the outside of the nozzle member, and the upper and lower cylinder chambers in the cylinder are communicated with each other when the piston strokes a predetermined amount against the spring. Consists of a switching 換連 communication means, the secondary air is to blow secondary air from the nozzle member with protruding umbilical member by the stroke of the supplied to the cylinder piston in a predetermined direction of the outer nozzle member.

In the second aspect of the invention, the nozzle member is provided with the air injection port and the wire guide port separately.

[0008]

Therefore, according to the first aspect of the invention, when the secondary air is supplied to the cylinder, the piston slides against the spring, and at the same time, the wire moves in accordance with the stroke of the piston so that the injection port of the nozzle member is ejected. It extends further out. When the piston moves by a predetermined stroke, the upper and lower cylinder chambers communicate with each other, and the secondary air is blown out vigorously from the injection port of the nozzle member. At this time, the tip of the linear member is extended toward the narrow space of the work or the recess where the chips are not likely to be blown off by the secondary air in advance, and the chips caught in these narrow spaces or caught in the recess are removed. While being pushed out, the secondary air blown out from the nozzle member blows it off, so that the chips can be surely sucked and collected.

According to the second aspect of the present invention, the air injection port and the wire guide port are separately provided in the nozzle, so that the injection port of the secondary air can be set to an optimum value regardless of the diameter of the wire, and the chips can be efficiently generated. Can be removed.

[0010]

1 and 2 show an embodiment of the present invention.

FIG. 1 is an overall sectional view of the present invention, and FIG. 2 is a sectional view during operation. The cover 4 which covers the processing recess 1 a of the work 1 is guided through the guide pin 3 inserted into the guide hole 2 and is installed at a predetermined position of the work 1. On the cover 4, an adapter 11 connected to the nozzle 5 is provided on the collar portion 1.
It is sandwiched by 1a and a nut 7, and a suction duct 8 is screwed.

Inside the adapter 11, a large diameter passage 11e,
A small diameter passage 11f is formed and communicates with the nozzle 5. One end of the cylinder 12 is screwed into a threaded portion 11b provided on the outer circumference of the adapter 11. The other end of the cylinder 12 is screwed into the union 13 so that secondary air is supplied.

A large diameter portion 12a and a small diameter portion 12b are coaxially provided in the cylinder 12, a piston 14 is slidably fitted in the small diameter portion 12b, and the piston 14 is moved in one direction (upward direction). The spring 15 for urging is inserted into the large diameter passage 11e of the adapter 11.

The piston 14 has a communication passage 14a and an annular groove 1.
4b is formed and communicates from the upper surface to the side surface of the piston 14. As a result, when the piston 14 descends to the stroke end and comes into contact with the small-diameter step portion 11c of the adapter 11, the piston 14 passes through the hole 11d formed in the large-diameter portion 12a of the cylinder 12 and the small-diameter portion 11c of the adapter 11.
The upper cylinder chamber A and the lower cylinder chamber B are communicated with each other. The cylinder chamber B below the cylinder 12 is always in communication with the nozzle 5 via the large diameter passage 11e and the small diameter passage 11f of the adapter 11.

A hole 14e penetrating the center of the piston 14
One end of a wire 16 is inserted in the wire and is fixed by a screw 17. The other end of the wire 16 has a cylinder chamber B in the cylinder 12, a large diameter passage 11e of the adapter 11, and a small diameter passage 11
f, through the injection port 5a of the nozzle 5, the piston 14 protrudes in a predetermined external direction as the piston 14 descends. The direction in which the wire 16 extends corresponds to a portion of the processed concave portion 1a of the work 1 which is likely to be clogged with chips,
That is, it is set so as to face the narrow space or the concave portion.
The tip of the wire 16 is scattered and spreads so that chips and the like are easily caught.

Next, the operation will be described with reference to FIG.
As shown in the block diagram of FIG. 1, the solenoid valve 22 is opened by the signal from the control panel 21 by the switch 20, and the secondary air is supplied from the accumulator 23 to the cylinder 12
When the piston 14 is supplied to the cylinder chamber A in the upper part of FIG.
Stroke until it contacts the small diameter portion 11c at one end.

The wire 16 protrudes from the nozzle 5a of the nozzle 5 in accordance with the stroke of the piston 14, extends to a predetermined position in the work 1, and pushes out the chips C and the like sandwiched in the lateral holes 9. On the other hand, at the lower limit of the piston 14, the communication passage 14a provided in the piston 14 and the annular groove 14
b, large diameter portion 12a of cylinder 12, hole 1 of adapter 11
The cylinder chamber B on the lower surface of the piston 14 communicates with the cylinder chamber A on the upper surface via 1d, and the large diameter passage 11e and the small diameter passage 1
Secondary air may be blown out from the nozzle 5a of the nozzle 5 via 1f to scatter the extruded chips C and the like, and at the same time, suction from the suction duct 8 to collect the chips C and the like in the suction device 24. it can.

When the solenoid valve 22 is opened and closed intermittently at a constant time interval, the wire 16 is extended and the clogged chips C are pushed out each time, so that the chips can be reliably removed.

When the supply of the secondary air to the cylinder 12 is stopped, the piston 14 is pushed back upward in the figure by the spring force of the spring 15 to come into contact with the union 13, and the wire 16 is pulled back into the nozzle 5 together with the piston 14. Be done.

When the cover 4 is initially set at a predetermined position on the work 1, the wire 16 does not extend laterally from the tip of the nozzle 5, and thus the beam 1 inside the work 1 is not formed.
The wire 16 does not interfere with 8, etc., and the cover 4 can be set smoothly.

In the second embodiment, as shown in FIG. 3, the nozzle 5 connected to the adapter 11 is provided with the injection port 5a for blowing the secondary air and the guide port 5b for the wire 16 separately. As a result, the injection port 5a that blows out secondary air can be set to an optimum value regardless of the diameter of the wire 16, and
The wire 16 does not affect the blowing of the secondary air.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing an operating state of the same.

FIG. 3 is an enlarged cross-sectional view showing another embodiment of the present invention.

FIG. 4 is a block diagram of the control system of the present invention.

FIG. 5 is a sectional view of a conventional example.

[Explanation of symbols]

 1 Work 4 Cover 5 Nozzle 5a Nozzle 5b Guide Port 8 Duct 11 Adapter 11d Hole 11e Large Diameter Passage 11f Small Diameter Passage 12 Cylinder 12a Large Diameter 12b Small Passage 14 Piston 14a Communication Passage 14b Annular Groove 15 Spring 16 Wire 24 Suction Machine A Cylinder Chamber B Cylinder chamber

Claims (2)

[Claims] 1. A cover which is set at a predetermined position of a work, a nozzle member and a suction duct attached to the cover, means for supplying secondary air to the nozzle member, and suction means connected to the suction duct. In a chip collecting device that scatters chips in the work with secondary air blown out from a nozzle member and sucks and collects from a suction duct, a cylinder connected to the nozzle member so as to communicate with one cylinder chamber , A piston slidably fitted in the cylinder, a spring for biasing the piston in one direction against the secondary air, and a linear member having a base end fixed to the piston.
It consists of a passage means for guiding the tip of the linear member to the outside of the nozzle member and a switching communication means for communicating the upper and lower cylinder chambers in the cylinder when the piston strokes a predetermined amount against the spring. A chip collecting device characterized in that, when supplied to the cylinder, the linear member is projected in a predetermined direction outside the nozzle member by the stroke of the piston and the secondary air is blown out from the nozzle member. 2. The chip collecting apparatus according to claim 1, wherein the nozzle member is provided with an air injection port and a wire guide port separately.