JPH0994704A - Work part recovering device for automatic lathe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate a work part and a chip, cut down by an automatic lathe, to make them recoverable. SOLUTION: A guide 4 is provided in the front of a spindle 1 to make fluctuation possible preventable in cutting down the work part 10 from work material 2, and also is capable of housing the cut down work part 10. A guiding tube 5 for guiding the cut down work part 10 to a part receiving box 7, and a vacuum generating means 6 is connected to the guide 4 and to the discharge port side of the guiding tube 5 respectively. An opening/closing means 8 is provided on a discharge port part 5b, and is closed to make the work part 10 be sucked by the means 6 when the work part 10 is cut down by a cutting-off bite 3. The work part 10, moved to the discharge port side, is released to the box 7 by opening the means 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machined part collecting device for an automatic lathe.

[0002]

2. Description of the Related Art An automatic lathe for cutting small items such as a pointer axis of a watch is troublesome to cut off a work piece from a work piece and drop it together with chips into a collection box later to separate it. For this reason, generally, a machined part collecting means for collecting the machined parts separately from the chips is provided.

As an example of the means for collecting the machined parts, a slide-shaped guide piece that advances and retreats by a cam is provided, and it stands by at the retracted position during cutting by the cutting tool, and when the machined parts are near to be cut off, It is proposed that the guide piece advances, receives the cut-off processed part, and passes through the slope of the slide-shaped chute and collects it in the part receiving box (Japanese Utility Model Publication No. 57-23041). .

[0004]

In the above-mentioned prior art, since the cutting chips during cutting are not mixed in the processed parts, the chips at the time of cutting off (cutting off) are still mixed, and therefore The separation of the chips is incomplete, and there is also the problem that a separate process for separating the two is required.

It is an object of the present invention to provide a machined part collecting device for an automatic lathe which can completely separate and collect machined parts and chips.

[0006]

To achieve the above object, the first aspect of the present invention provides a guide in front of a spindle of an automatic lathe for accommodating a machined part to be cut off after machining by the automatic lathe. , Connect a guide tube that guides the cut-out processed part to this part receiving box, and when the processed part is cut off, vacuum the discharge side of this guide tube and place the processed part inside the part receiving box. It is designed to be released. Specifically, a vacuum generating means is connected to the discharge port side of the guide tube, and the discharge port is closed when the vacuum generating means is in operation to evacuate the inside of the guide tube to guide the machined part and There is provided opening / closing means for discharging the processed parts that have moved open in the guide tube and then moved into the parts receiving box.
Only the machined parts cut off in the guide are collected in the part receiving box, and the chips generated when cutting and cutting off the machined parts fall as they are and are collected by the collection means provided below the guide during machining. Therefore, the feature is that the processed parts can be collected with the chips completely separated.

According to the second aspect of the present invention, a compressed air tube is provided at the end of the guide tube connected to the guide as a means for moving the cut-off work piece, and the compressed air tube is provided when the work piece is cut off. Compressed air is supplied to the inside of the induction tube to reduce the pressure inside the induction tube so that the processed component is sucked and discharged from the exhaust port to the component receiving box, which has the same effect as that of claim 1. However, it is characterized in that it is more advantageous in terms of cost in that the vacuum generating means and the opening / closing means are not required.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIG. 1 illustrates the configuration of the first embodiment, in which the automatic lathe body and other peripheral devices are omitted. The spindle 1 forms the center of an automatic lathe, and is provided with a chuck device (not shown) that can attach / detach a workpiece 2 made of a wire rod or a rod and send it out.

In front of the spindle 1, there are provided a plurality of cutting tools (not shown) and a cutting tool 3 which are provided so as to advance and retract toward the center of rotation of the spindle.

A cylinder-shaped guide 4 is provided in front of the cut-off bite 3 so as to be capable of accommodating a machined part 10 which is formed by cutting the material 2 after cutting. Guide 4
Is a cylindrical member, is supported by a support member (not shown) provided on the main body of the automatic lathe, and has a function of preventing shake when the workpiece 2 is cut through.

An inlet portion 5a of the guide tube 5 of the work part 10 made of a curved pipe is connected to the rear end portion of the guide 4. An air hose 6a of a vacuum pump 6, which is a vacuum generator, is connected to the outlet side of the component guide tube 5.

The outlet portion 5b of the guide tube 5 is located above the parts receiving box 7 for collecting the collected processed parts 10. The discharge port portion 5b of the guide tube 5 is provided with opening / closing means 8 for opening / closing the tip portion. The opening / closing means 8 is composed of a sluice valve, and is provided so as to be movable back and forth by a cylinder 9. The cylinder 9 can be controlled by a control means (not shown) so as to be closed when the work part 10 is cut off and opened when the work part 10 is moved.

[0013]

[Operation] First, the spindle 1 that chucks the workpiece 2 is rotated, and a plurality of cutting tools are alternately advanced and retracted to machine the tip 2a of the workpiece 2 into the shape of the workpiece 10. To do.

When the cutting process is completed, the spindle 1 temporarily stops here, and the work piece 2 is automatically pushed forward by an amount corresponding to the length of the work piece. At this time, more than half of the portion of the tip 2a of the workpiece 2 that is to be the processed component is positioned inside the guide 4 and is prevented from falling. Spindle 1 is rotated again, and parting bite 3
The tip 2a of the work piece 2 is cut off to form the machined part 10, and the machined part is left in the guide 4. At this time, the tip portion 2a is steady by the guide 4 during rotation, which makes it possible to stably perform the cut-off work. The chips generated during the cut-off process are dropped and collected by a chip collecting means (not shown) provided below.

When the cut-off bite 3 is about to cut off the tip 2a from the workpiece 2, the cylinder 9 is operated by the control means to move the opening / closing means 8 forward so that the discharge port 5b of the guide tube 5 is removed. Close. When this closing is completed, the vacuum pump 6 which is a vacuum generating means is started via the control means, and the suction force acts on the inside of the component guide tube 5 from the inlet portion 5a to the outlet portion 5b via the vacuum hose 6a. To As a result, in the guide tube 5, a suction force acts from the inlet portion 5a toward the discharge outlet portion 5b, so that the machined parts left after being cut off in the guide 4 are sucked and conveyed to the discharge outlet portion 5b side. . Processed parts 10 transported
Is prevented from falling by the opening / closing means 8 and remains in the tip portion 5b, but when the opening / closing means 8 is opened after the vacuum pump 6 is stopped, it is naturally dropped and collected in the component receiving box 7. To be done. After the control circuit completes the work of cutting off the work piece 2 by the cut-off tool 3, the vacuum pump 6
Is controlled so as to start, the cutting chips are not sucked together with the processed part 10, and only the processed part 10 is collected in the part receiving box 7.

At the same time when the opening operation of the opening / closing means 8 is started, the workpiece 2 is pushed forward by a predetermined length and moved to the next processing, and the processed parts are made one after another by the same process, and It is completely separated from the chips and collected.

(Second Embodiment) FIG. 2 illustrates the configuration of the second embodiment. The spindle 21, the work material 22, the cut-off bite 23 and the guide 24 are the same as those in the first embodiment. It is the same. A guide tube 25 of a work piece 30 is connected to the guide 24, and an end portion 25b thereof is connected to a side portion of a compressed air tube 26. The base of the compressed air tube 26 is connected to a compressor (not shown) via a solenoid valve (not shown), and the exhaust port 26b is provided above the component receiving box 27.

[0018]

[Operation] Similar to the first embodiment, the workpiece 2
The tip end 22a of the second part is cut off by the cut-off bite 23, and the processed part 30 remains in the guide 24. At this point, the solenoid valve is opened by the control means (not shown), compressed air is sent into the compressed air tube 25, and the exhaust port 2
It is discharged from 6b to the outside. At this time, compressed air tube 2
The higher the flow velocity of air in 6, the lower the pressure at the end of the guide tube 25. Therefore, if the solenoid valve opens when the work piece 22 is cut off, a negative pressure is generated at the end of the induction tube 25 connected to the compressed air tube 26. This negative pressure sucks the processed component 30 left in the guide 24 toward the exhaust port. The work piece 30 is a guide tube 25.
And the compressed air tube 26, and is discharged from the exhaust port portion 26b of the compressed air tube 26 into the component receiving box 27 for recovery.

When the processed component 30 is collected in the component receiving box 27, the solenoid valve is closed via the control means and the supply of compressed air is stopped. Subsequently, cutting of the next processed part is started, and similarly the processed parts are collected one after another. In this embodiment, an expensive vacuum generating means is unnecessary, and it is not necessary to provide an on-off valve for the induction tube and a cylinder for opening and closing the induction tube, so that the structure is extremely simple. Furthermore, compressed air can be connected to the compressed air tubes of a large number of component recovery devices by branching the air hose from one compressor, which is advantageous in terms of cost.

[0020]

As described above, according to the present invention, the machined parts separated from the material to be machined are conveyed to the parts receiving box by vacuum pressure. It will be possible to collect them in a completely separated state. Also, if the processed parts are sucked by the negative pressure generated by supplying compressed air to the compressed air tube provided at the end of the guide tube, the processed parts completely separated from the chips can be recovered in the same way. In addition to the above, since the structure is simplified, the cost of the device can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a first embodiment.

FIG. 2 is an explanatory diagram showing a second embodiment.

[Explanation of symbols]

 1, 21 Spindle 4, 24 Guide 5, 25 Induction tube 5b Discharge port 6 Vacuum generation means 7, 27 Parts receiving box 8 Opening / closing means 10, 30 Processing part 26 Compressed air tube 26b Exhaust port

Claims (2)

[Claims] 1. A guide for accommodating a processed part cut off by the automatic lathe is provided in front of a spindle of the automatic lathe, and the guide tube guides the processed part to a part receiving box. Is connected to a predetermined position of the guide tube, and when the work part is cut off by the automatic lathe, a vacuum is generated to move the work part into the guide tube by depressurizing the inside of the guide tube. A means is provided, and the discharge port portion of the guide tube on the component receiving box side is closed when the vacuum generating means is operated, and the processed component is moved from the guide into the component receiving box side. Open after the processed part has moved into the guide tube, move the processed part moved in the guide tube into the part receiving box side. Machining parts collection system for an automatic lathe, characterized in that the closing means for out is provided. 2. A guide for accommodating a processed component cut off by the automatic lathe is provided in front of a spindle of the automatic lathe, and the guide tube guides the processed component to a component receiving box. Is connected, and compressed air is supplied to the end of the guide tube when the machined part is cut off by the automatic lathe, and the machined part is sucked by negative pressure in the guide tube. A machined part collecting device for an automatic lathe, which is provided with a compressed air tube for discharging the machined part from the exhaust port to the part receiving box.