JP2610759B2 - Punching method and device, and striker device used in the device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching method and apparatus for supplying air blow only to an air blow mold coexisting with an ordinary mold in a punching press for punching, and a striker apparatus.

[0002]

2. Description of the Related Art Conventionally, an auxiliary function of an NC control device for performing work positioning, die indexing, striker operation instructions, etc., in order to blow air from a die for air blow in, for example, a turret punch press. According to the (M code), an ejection command is issued to the air blow device to perform punching.

[0003]

According to the technique of issuing a blow command to a conventionally known air blow device, whether or not to blow an air blow is input in advance in a program of an NC control device. Needed.

For this reason, when an air blow device is installed, there is a problem that an operation of inserting (correcting) the M code into an existing program is required. Further, there is a problem that an air blow device cannot be attached to a punch press having an NC control device not equipped with an auxiliary function (M code).

In view of the above problems, an object of the present invention is to provide an N
Punching method with air blow device which can be used in a punching press with an NC control device which does not need to modify an existing program stored in a C control device and has no auxiliary function, and a device and a device therefor. It is to provide a striker device to be used.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a method for determining whether an air blow mold is indexed to a processing position among a normal mold and an air blow mold. When it is detected by the presence or absence of the identification code provided in the above, while supplying air to the passage formed in the striker provided above the processing position, the striker is operated to perform punching with the mold. This is a characteristic punching method.

In the above-mentioned punching method, the presence or absence of an identification code provided on the mold is detected by an identification code detection sensor provided around the striker, and a passage formed in the striker is provided. It is desirable to perform the supply of air to the air and the operation of the striker in synchronization.

Further, the present invention provides an identification code provided on at least one of an air blow mold and a normal mold, a sensor for detecting the identification code provided around the striker, and an air connected to the striker. A blow device, a control device for the air blow device that controls the air blow device and determines the presence or absence of an identification code from the sensor, and the striker is operated, and the air is synchronized with an operation command of the striker. The punching apparatus was provided with a striker operating NC controller for transmitting a signal to the blow apparatus controller.

Further, an identification code is provided on a head of an air blow mold having an air passage, and a sensor for detecting the identification code is provided on a periphery of the striker. A striker device was constructed by providing an air blow passage for communicating with an air road of a blow mold on the striker.

[0010] In the striker device, it is preferable that the sensor is provided on a striker holder for holding the striker or on a mounting bracket attached to the striker.

[0011]

In the above construction, in the turret punch press as a punching apparatus, when the air blow mold is indexed to the processing position, at least one of the air blow mold and the ordinary mold is used. Is detected by an identification code detection sensor provided around the striker, and the air blow mold is indexed to the processing position.

After the detection signal is transmitted to the control device for the air blow device, when the NC control device issues a punch command to the striker, the punch command is transmitted to the control device for the air blow device in synchronization. Then, a command signal is transmitted to the air blow device by the control device for the air blow device so that the air blow device supplies air to the air blow passage provided in the striker.

[0013] The air enters the blow-pressing air blow mold through the air blow passage of the striker, and is blown out from the lower end of the air blow mold as air blow.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;

First, an outline of a turret punch press (punching apparatus) 1 as a punching apparatus will be described with reference to FIG. That is, the turret punch press 1 having the frame 5 having the foot portion 3 includes:
A fixed table 9 fixed to the lower frame 7 supporting the work W and a work positioning device 11 for positioning the work W are provided.

Further, a plurality of upper molds 13 are mounted on the circumference, and an upper turret 19 rotatably supported on the upper frame 15 by a rotating shaft 17 and a plurality of lower molds 21 are mounted on the circumference. A lower turret 25 is provided and mounted on the lower frame 7 so as to be rotatable about a rotation shaft 23. The upper turret 19 and the lower turret 25 are synchronously rotated by one turret driving device (not shown),
A desired pair of the upper mold 13 and the lower mold 21 is selected and indexed to a processing position below the striker 27.

The upper frame 15 has a striker 27 for hitting the upper mold 13 of the upper turret 19.
A ram main body 31 provided with a striker device 29 including a The ram body 31 is driven by, for example, a crankshaft 33 as a driving device.

With the above configuration, the turret driving device is operated to rotate the upper and lower turrets 19 and 25, so that the desired upper and lower dies 13 and 21 are indexed to the processing positions and the work W is also fixed. After the origin is positioned on the table 9, the work is clamped by the work clamp of the work positioning device 11, and the desired punched portion is formed by the upper and lower dies 13, 2.
1 are positioned so as to be sandwiched between them.

Then, when the crankshaft 33 is driven and the ram main body 31 is lowered, the upper mold 13 is hit by the striker 27. The striking force is received by the work W, the lower mold 21 and the lower turret 25, and the work W is subjected to a desired punching process.

By the way, in order to blow off chips at the time of the above-described punching, an air blow is blown from the lower end of the upper mold 13 or a lubricant is mixed into the air blow to blow out an oil mist. However, processing efficiency may be improved. That is, it is necessary to blow air blast or oil mist toward the work W depending on the shape of the punched hole and the material of the work W.
Therefore, the upper mold 13 is provided with an ordinary mold and air blow molds 35 and 2 capable of ejecting air blow or oil mist.
There are types. Therefore, the upper turret 19 is rotated, and the air blow device 71 blows out air blow or oil mist only when the air blow mold 35 is indexed to the processing position below the striker 27. .

In order to distinguish the ordinary mold from the air blow mold 35, at least one of the above molds, for example, around the head of the air blow mold 35, as shown in FIGS. The part is provided with an identification code 37. The identification code 37 may be any as long as the identification code detection sensor 39 can be easily identified. For example, various things such as a color, a ring-shaped protrusion or groove, a numeral, a protrusion or a depression of an appropriate size, and the like can be considered.

2 and 3, the striker device 29 in the first embodiment has a striker holder 4
1 is provided. The striker holder 41 is provided with a striker 27 having an air blow passage 43 provided in the lower part thereof in a center hole shape. An air pipe port 45 is provided on a side surface of the striker holder 41 and communicates with the air blow passage 43 through a drill hole.

On the other hand, a sensor storage hole 47 is provided on the lower surface of the striker holder 41 at a position corresponding to the periphery of the striker 27.
Is provided. A through hole 49 opened from the side of the striker holder 41 communicates with the upper part of the sensor storage hole 47. In the sensor storage hole 47, a sensor 39 for detecting an identification code is appropriately directed toward an identification code 37 provided on the air blow mold 35 via a mounting bracket 51 provided on the lower surface of the striker holder 41. At a suitable distance (for example, about 40 mm). The above sensor 39
For example, a photoelectric switch such as a fiberscope is used. Therefore, the fiber wire 53 exiting from the sensor 39 passes through the through hole 49 and the striker device 29.
Is led outside.

FIG. 4 shows a striker device 29 in the second embodiment. The difference from the first embodiment in FIG. 2 is that the sensor 39 is mounted on the cylindrical side surface of the striker 27 instead of being provided in the striker holder 41. A metal fitting 51 is provided, and the sensor 39 is mounted on the mounting metal fitting 51 and provided directly on the outer periphery of the striker 27.

FIG. 5 shows a striker device 29 in the third embodiment. The difference from the second embodiment in FIG.
The air pipe port 45 communicating with the air blow passage 43 is provided directly on the cylindrical side surface of the outer periphery of the striker 27.

In any case, the striker device 29 in the above-described first, second and third embodiments merely differs in the arrangement of the sensor 39 and the air piping port 45.

Next, the air blow mold 35 will be described with reference to FIG. First, a cylindrical punch guide 55 supported on the upper turret 19 so as to be movable up and down is provided such that an upper flange portion is constantly urged upward by a lifter spring 57. A punch body 59 is provided in an inner hole of the punch guide 55 so as to be vertically movable. The upper part of the punch body 59 is thin and shank-shaped, and the upper end is provided with a punch head 61 screwed with a screw. A strong stripper spring 63, which is a compression spring, is provided between the lower end of the punch head 61 and the upper end of the punch guide via a spring seat.

An air blow hole 65 is provided at the center of the punch body 59 from the upper end to the lower end. However, since the punch part 67 is provided at the lower end of the punch body 59, the lower part of the air blow hole 65 is branched, and finally passes between the lower end of the punch guide 55 and the outer periphery of the punch part 67. Air blow or oil mist is ejected from the formed ejection port 69. Furthermore, in the lower part of the air blow hole 65,
There is also a branch path slightly above the punch portion 67, which is used for lubrication between the punch body 59 and the punch guide 55 and between the punch guide 55 and the upper turret 19 when oil mist is mixed in the air. It is intended for. The upper surface of the punch head 61 is provided with, for example, a color as the identification code 37 only in this embodiment. The upper end of the air blow hole 65 is a striker 27.
Are formed so as to be vertically aligned with the air blow passage 43 when the air blows down and comes into contact with the punch head 61.

Next, as shown in FIG. 1, an air blow device 71 for supplying air for air blow to the air pipe opening 45 of the striker device 29 is provided on the upper frame 15. . The air blow device 71 is configured by a combination of known devices. That is, the pressure air introduced from a compressor (not shown) is supplied to a regulator with a filter for adjusting the pressure to an appropriate pressure, and further communicates with the air pipe port 45 via an electromagnetic valve 73 for supplying and stopping the air blow. It is a hurry. When oil mist is mixed with air, a lubricator for generating oil mist may be interposed between the regulator and the solenoid valve 73.

In order to control the solenoid valve 73 of the air blow device 71, a control device 75 for the air blow device is used.
Are provided on the upper frame 15. The signal input to the air blow device control device 75 is such that the optical signal detected by the sensor 39 from the identification code 37 is transmitted to the amplifier 77 provided on the upper frame 15 near the striker device 29 via the fiber line 53. It has become. This amplifier 77
Is provided so as to expand and convert an optical signal into an electric signal. Further, an electric wire for transmitting the electric signal is provided between the amplifier 77 and the control device 75 for the air blow device.

On the other hand, an NC control device 79 is provided near the turret punch press 1. This NC controller 79
Are the positioning control of the work W and the upper and lower dies 13, 21
In addition to controlling indexing to the machining position,
A punch signal for driving the crankshaft 33 in order to move up and down 7 is also output. In order to synchronously transmit the punch signal to the control device 75 for the air blow device, the control device 75 for the air blow device is used.
An electric wire is also provided between and the NC control device 79.

On the other hand, the air blow device control device 75 has a relay (not shown) so that a signal identifying the air blow mold 35 by the sensor 39 and a punch signal from the NC control device 79 are simultaneously input. Air blow device 7
A signal for opening one electromagnetic valve 73 is output. Therefore, an electric wire is also connected between the air blow device 71 and the control device 75 for the air blow device.

The operation of the punching apparatus 1 and the striker device 29 according to this embodiment will be described with reference to the signal transmission path explanatory diagram shown in FIG. First, when the air blow mold 35 is indexed at the processing position below the striker 27, the sensor 39 detects the identification code 37 provided on the punch head 61 of the air blow mold 35. The detection signal is enlarged and converted into an electric signal by the amplifier 77, and then transmitted to a relay in the control device 75 for the air blow device. On the other hand, when a punch signal for driving the crankshaft 33 as a drive device for lowering the striker 27 from the NC control device 79 is transmitted to the relay in the air blow device control device 75 in a synchronized manner, This relay works to open the solenoid valve 73 in the air blow device 71.

Then, the air adjusted to an appropriate pressure by the regulator in the air blow device 71 flows through the striker 2 through the air pipe port 45 of the striker device 29.
7 and enters the air blow passage 43. At this time, since the lower end surface of the striker 27 and the upper end surface of the air blow mold, that is, the punch head 61, are in contact with the lowering of the striker 27, the air also enters the air blow holes 65, and From 69, air is blown toward the work W. If a lubricator is mounted in the air blow device 71, oil mist is blown from the ejection port 69 toward the work W. At this time, since the lubricating branch path is provided below the air blow hole 65 as described above, the sliding surfaces of the punch body 59, the punch guide 55, and the lower turret 25 are also lubricated by the oil mist.

As the striker 27 descends,
First, the lower surface of the punch guide 55 contacts the work W while compressing the lifter spring 57. Further striker 2
7 is lowered, the stripper spring 63 is also compressed, so that the work W is held between the punch guide 55 and the lower mold 21 by an appropriate force by the time the punch portion 67 comes into contact with the work W. I have. Then, when the workpiece W is punched by the bunch 67 and the lower mold 21, the air blow or oil mist together with the punched pieces blows downward through the inner hole of the lower mold 21 and the inner hole of the lower turret 25.

Next, when the striker 27 enters the upward stroke after the crankshaft 33 has passed the bottom dead center, the punch body 59 first rises by the biasing force of the stripper spring 63, and then the punch guide 55 by the biasing force of the lifter spring 57. Rises with the punch body 59. Finally, the striker 27 separates from the upper surface of the air blow mold 35 and reaches the top dead center. It is desirable that the air blow or oil mist be stopped in the middle of the above-described ascent stroke. For example, there is a method in which the solenoid of the solenoid valve 73 is released by a timer to stop the flow of air.

As described above, according to this embodiment, whether the upper mold 13 indexed to the processing position is the ordinary mold or the air blow mold 35 is identified on the mold. It is detected by the sensor 39.

The detection signal from the sensor 39 is transmitted to the control device 75 for the air blow device.
When a punch command signal for driving the striker 27 is transmitted from the NC control device 79 to the air blow device control device 75 in synchronization, an internal relay operates to open the electromagnetic valve 73 of the air blow device 71. It has become. As a result, air is blown from the jet port 73 of the air blow mold 35, and oil mist is jetted.

Therefore, the NC control device 79 merely sends the punch command signal for operating the striker 27 to the control device 75 for the air blow device in synchronization, so that the program does not need to be modified and the work efficiency can be reduced. Effective for improvement.

Furthermore, since the punching apparatus 1 including the air blow apparatus 71 can be applied to a punch press with an NC control apparatus having no auxiliary function, the applicable range is expanded and commercial and economic effects can be expected.

It should be noted that the present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes.

[0042]

As will be understood from the above description of the embodiment, according to the present invention, whether the die indexed to the processing position is a normal die or an air blow die is determined. Is detected by an identification code provided on the mold and an identification code detection sensor provided around the striker.

When the detection signal from the sensor is transmitted to the control device for the air blow device, the air blow device issues a command to supply air to the air blow passage provided in the striker. The timing of issuing this command is determined by a signal transmitted to the control device for the air blow device in synchronization with the NC control device issuing the punch command to the striker.

Therefore, the NC control device only needs to synchronously send the punch command signal for operating the striker to the control device for the air blow device, so that the program does not need to be modified and the working efficiency is improved. . further,
The air blow device can be attached to a punch press with an NC control device that does not have an auxiliary function, so that the application range is expanded and commercial and economic effects can be expected.

[Brief description of the drawings]

FIG. 1 is a left side view showing an entire turret punch press as a punching apparatus of the present invention.

FIG. 2 is a sectional view of the striker device according to the first embodiment of the present invention.

FIG. 3 is a bottom view in FIG. 1;

FIG. 4 is a sectional view of a striker device according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a striker device according to a third embodiment of the present invention.

FIG. 6 is an explanatory sectional view showing an example of an air blow mold.

FIG. 7 is an explanatory diagram showing a signal transmission path in the punching apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turret punch press (punching apparatus) 27 Striker 29 Striker device 35 Air blow mold 37 Identification code 39 Sensor 41 Striker holder 43 Air blow passage 51 Mounting bracket 71 Air blow device 75 Control device for air blow device 79 NC control apparatus

Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location B23Q 17/00 B23Q 17/00 F

Claims (7)

(57) [Claims] When the presence or absence of an identification code provided on the mold detects that the air blow mold has been indexed to a machining position among the ordinary mold and the air blow mold, the machining is performed. A punching method, comprising supplying air to a passage formed in a striker provided above the position, operating the striker, and performing punching with the mold. 2. The punching method according to claim 1, wherein the presence or absence of an identification code provided on the mold is detected by an identification code detection sensor provided around the striker. 3. The punching method according to claim 1, wherein supply of air to a passage formed in the striker and operation of the striker are performed in synchronization with each other. 4. An identification code provided on at least one of an air blow mold and an ordinary mold, an identification code detection sensor provided around a striker, and an air blow device connected to the striker. A control device for the air blow device that controls the air blow device and determines the presence or absence of an identification code from the sensor; and operates the striker and synchronizes with the operation command of the striker for the air blow device. An NC control device for striker operation for transmitting a signal to the control device. 5. An air blow mold having an air passage is provided with an identification code on a head thereof, and a sensor for detecting the identification code is provided on a peripheral portion of the striker. A striker device, wherein a striker is provided with an air blow passage communicating with an air road of a blow mold. 6. The striker device according to claim 5, wherein said sensor is provided on a striker holder for holding said striker. 7. The striker device according to claim 5, wherein the sensor is provided on a mounting bracket attached to the striker.