JPH0725008B2 - Method and device for removing spiral chips - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method and an apparatus for removing spiral chips in a machine tool such as a lathe.

[Conventional technology]

In a machine tool such as a lathe, when steel material is cut with a cutting tool, elastic spiral chips are continuously generated, which causes a problem in the processing.

Therefore, it is usual to stop the operation of the machine in a timely manner to remove these chips, or to forcibly remove them by inserting a hooking rod or the like into the chips during the cutting to obtain the chips.

As a device for automatically removing this chip, a chip breaker is provided on the cutting tool, or a fixing jig for winding the cut chips is provided near the cutting tool and wound around this fixing jig. The chips are removed when they are obtained.

[Problems to be solved by the invention]

However, when the work material is sticky,
The effect of the chip breaker does not increase sufficiently.

Further, in the case of a fixing jig for removing chips, it is necessary to obtain and remove the chips that have become involved in the jig, which is troublesome.

[Means for solving problems]

The method for removing spiral chips according to the present invention is a method in which a needle protruding from an ironing hole provided in a receiving plate is inserted into an assembly of spiral chips generated during cutting, and the spiral chips are inserted into the needle. After the cutting is completed, the cutting needle is pulled out from the cutting portion while the aggregate of chips is entangled, so that the chips are dropped in front of the ironing hole in the receiving plate.

Further, in the device for removing spiral chips according to the present invention, the reciprocating means and the reciprocating means cause the front end to project into the aggregate of spiral chips generated from the workpiece cut by the blade. It is characterized by including a reciprocating needle and a receiving plate that is provided immovably with respect to the reciprocating means and has an ironing hole through which the needle can be inserted.

[Action]

The spiral chips entangled with the insertion needle are dropped from the front surface of the insertion needle when the insertion needle is immersed in the ironing hole of the receiving plate.

〔Example〕

Hereinafter, a procedure for carrying out the method for removing spiral chips and a device for removing spiral chips according to the present invention will be described with reference to FIGS. 1 to 4.

(1) is a chuck of a lathe, which can be rotated about a horizontal axis by a rotation drive means (not shown), and a plurality of chuck claws (1a) provided at the axis center and which can be opened and expanded.
The work piece, for example, the base end portion (2a) of the engine valve (2) can be gripped.

Reference numeral (3) is a blade, that is, a bite, which is attached to a bite table (4) which is movable in the front-rear, left-right direction on a bed (not shown) of the lathe.

The engine valve (2) includes a cylindrical base end (2a) and a trumpet-shaped umbrella portion (2c) continuously provided through a neck (2b) whose diameter gradually increases toward the free end. Is.

The cutting tool (3) cuts the outer peripheral surface on the back side of the umbrella portion (2c), but at this time, spiral chips (5) are continuously generated.

(6) is a chip removing device, which is mounted on a mount (7) installed on the bed.

Reference numeral (8) is a frame, which has four spacing members (8c) formed by vertically arranging front and rear plates (8a) and (8b) having the same shape and the same size and facing each other. Are connected in a rectangular frame shape, and the rear portion of the lower surface thereof is fixed to the mounting base (7).

As shown in FIG. 2, the front plate (8a) has a pair of small-diameter guide holes (9) (9) arranged on the vertical line, and the rear plate (8b) has a large-diameter hole at the center thereof. (10) is drilled.

(11) is a reciprocating means such as an air cylinder, the front end of the cylinder case (11a) of which is fixed to the rear surface of the rear end (8b), and the piston rod (11b) protruding forward from the rear end (8b) has the large diameter. Frame (8) through hole (10)
A vertical mounting plate (12) is secured to the front end of the mounting plate (12).

(13) is a receiving plate for dropping the cutting, and has a pair of upper and lower ironing holes (13a) (13a). The ironing holes (13a) (1
3a) is aligned with the guide holes (9) (9) of the front plate (8a) and fixed to the front surface of the front plate (8a).

(14) is a pair of upper and lower insertion needles facing the front-rear direction, and an intermediate portion (14a) thereof is slidably inserted into the guide holes (9) (9) and the ironing holes (13a) (13a), respectively. The rear end (14b) is fixed to the front surface of the mounting plate (12). The front end (14c) of the insertion needle (14) has a sharp needle shape.

In order to remove the chips (5) associated with the cutting of the engine valve (2), as shown in FIG. 1, the engine valve (2) held by the chuck (1) is started to be cut by the cutting tool (3). At the same time, air is sent into the air cylinder (11), and the needle (14) is projected forward through the piston rod (11b) as shown by the arrow (a) in FIG.

At the front end (14c) of the needle (14), the continuously generated chips (5) rush into the aggregate (5a), so that the spiral chips (5) Tangle with the front end of the needle (14).

When the cutting work is completed, the engine valve (2) is automatically released from the chuck (1) and a chute (not shown)
Fall on.

At this time, the cutting chips (5) remain entwined with the needle (14) and do not adhere to the engine valve (2) and fall.

Next, when the piston rod (11b) is retracted as shown by the arrow (b) in FIG. 4, the insertion needle (14) moves to the receiving plate (13).
Since it is submerged in the ironing hole (13a), the aggregate (5a) of cutting chips (5) is pulled out from the insertion needle (14), and the arrow (C) is drawn.
As shown in, it falls on the front surface of the catch plate (13).

By repeating such a chip removing procedure, the cutting work of the engine valve (2) and the chip removing work are automatically performed in parallel. Therefore, it is not necessary to stop the machine for removing chips, and the lathe can be automatically operated.

As the reciprocating means in the above-described chip removing device, an electric or mechanical reciprocating driving means may be used instead of the cylinder device.

Although the number of insertion needles was two, depending on the generation state of chips,
It may be one.

The present invention is not limited to a lathe, and it is needless to say that the present invention can be applied to various machine tools such as boring machines, drilling machines, and the like that generate spiral chips.

〔The invention's effect〕

According to the method for removing spiral chips according to the present invention, since the spiral chips can be automatically removed, labor is not required to remove the chips in an automatic lathe or the like, and the work efficiency is improved.

According to the device for removing spiral chips according to the present invention, the removal of spiral chips can be performed easily and surely, the structure is simple, and the installation space is small, and the device is used by being attached to an existing machine tool. can do.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing a usage state of the spiral cutting device of the present invention, FIG. 2 is a perspective view showing only the frame of FIG. 1, and FIGS. FIG. 6 is a schematic side view showing different procedures in the method for removing spiral chips. (1) Chuck (1a) Chuck claw (2) Engine valve (workpiece) (3) Tool (blade) (4) Tool stand (5) Chips (5a) Aggregate (6) Chip remover (7) ) Mounting base (8) Frame (9) Gait hole (10) Large diameter hole (11) Air cylinder (reciprocating means) (11a) Cylinder case (11b) Piston rod (12) Mounting plate (13) Stop plate ( 13a) Ironing plate (14) Insertion needle

Claims (3)

[Claims] 1. An insert needle protruding from an ironing hole provided in a receiving plate is inserted into an assembly of spiral chips produced during cutting, and the spiral chips are entangled with the insert chip, and after cutting,
A method for removing helical chips, characterized in that the cutting powder is dropped in front of the ironing holes in the receiving plate by pulling out the cutting needle while the aggregate of cutting chips is entangled, from the cutting portion. 2. A reciprocating means, and a reciprocating needle which is reciprocally moved by the reciprocating means so that the front end of the reciprocating means rushes into an assembly of spiral chips generated from a workpiece cut by a blade. A device for removing spiral chips, which is provided immovably with respect to the reciprocating means and has a receiving plate having an ironing hole through which the insertion needle can be inserted. 3. The device for removing spiral chips according to claim 2, wherein the reciprocating means is a cylinder device comprising a cylinder case and a piston rod reciprocating in the cylinder case.