JPH0299231A - Method and apparatus for identifying punch die automatically - Google Patents

Abstract

PURPOSE:To easily and automatically identify the information of a specification of a punch die corresponding to a measured data of a hole by forming a hole at the rear end part of the punch die and measuring the size and shape of this hole. CONSTITUTION:A stepped hole H is formed at the rear end part of the punch 17 and the depth of this stepped hole H is measured by a hole depth measuring instrument 43. Referring to a conversion table of the relation among a set depth of the stepped hole H stored in advance and the shape and size of the punch 17, the shape and size of the punch 17 by a measured data is identified and a tool code corresponding to it can be transported automatically and easily to an NC device or an automatic programming device.

Description

[Detailed description of the invention] [Objective of the invention] (Industrial application field) This invention is an automatic punch mold that automatically identifies specification information of a punch mold used in a plate processing machine such as a turret punch press. This invention relates to an identification method and device.

(Prior Art) Conventionally, in a management method for a punch die used in a plate processing machine such as a turret punch press, the die designation for an NG tape is performed at station No. 1 of the turret. Various punch dies are attached to each station, and due to the special circumstances that there are an extremely large number of types of dies, it is necessary to ensure that a predetermined die is attached to a predetermined station.

Furthermore, after a given die is installed at a given station, management is merely a matter of counting and managing the number of punches of the punch die.

The key to managing punch dies is how to provide the punch dies themselves with specification information such as size and shape.

To date, as a means of identifying specification information on the punch die itself, the tool N
o. When the punch mold was opened and the punch die was installed in the processing station, the processing station number and tool number were managed based on a corresponding list.

However, with this die punch identification means, a list must be created each time a die punch is attached to the processing station, which requires labor and is troublesome to manage. Under the circumstances, it was not possible to identify the punch die.

Therefore, IC
Some ideas are being considered: ones with built-in chips, ones with paint or barcodes pasted on them, ones with laser marking, and even ones that take pictures with a COD camera.

(Problems to be Solved by the Invention) By the way, the above-mentioned IC chip cannot be used realistically due to the characteristics of punch mold processing itself, mainly due to impact imaging, and it is difficult to use paint or The use of barcodes has also not been adopted due to the ease with which they peel off.

Furthermore, even if a method using laser marking or a method of photographing with a COD camera or the like is theoretically possible, it requires a considerable amount of investment and poses a problem.

The purpose of the present invention is to improve the above-mentioned problems by forming a hole at the rear end of the punch die and measuring the size and shape of the hole, thereby making it possible to easily identify the punch die automatically. An object of the present invention is to provide a method and device for automatic type identification.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a hole according to the specification information of the punch mold at the rear end corresponding to the tip of the cutting edge of the punch mold. This punch mold automatic identification method involves forming a hole, measuring the size and/or shape of the hole, and automatically identifying punch specification information based on this measurement data.

Further, the present invention provides a punch die in which a hole is formed in a rear end corresponding to the tip of the cutting edge according to specification information, and a method for measuring the size or shape of the hole formed in the punch die, or both. A measuring means, a conversion table storing a relationship between specification information of the punch die and preset setting data of the hole, and measurement data of the hole measured by the measuring means and the conversion table. An automatic punch mold identification device is provided with identification means for automatically identifying punch mold specification information that is input and corresponds to hole measurement data.

(Function) By adopting the punch mold automatic identification method and its device of the present invention, a hole is formed in the rear end portion of the punch mold corresponding to the tip end of the cutting edge, and a hole corresponding to the specification information is formed, and the size or The shape or both are measured by a measuring means. Further, the relationship between the punch die specification information and the preset hole setting data is stored in a conversion table. The measurement data of the hole measured by the measurement means and the conversion table are taken into the identification means, and the specification information of the punch mold corresponding to the measurement data of the hole is easily and automatically identified and a mold code is obtained. is detected. This mold code is then transferred to an NC device or an automatic programming device to manage the mold.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

Referring to FIGS. 7 and 8, the turret punch press 1 has a lower frame 3 and an upper part which is integrally provided via a support 7 and is spaced appropriately to provide a working area 5 on the lower frame 3. A frame body is constituted by a frame 9 and the like.

A punching section 11 for punching a workpiece W is provided on the side of the work area 5 (left side in FIG. 7). The punching section 11 includes a disk-shaped upper turret 13 that is rotatably mounted on the upper frame 9 and a disk-shaped lower turret 15 that is appropriately spaced from the upper turret 13 and that is rotatably mounted on the lower frame 3.
It is composed of etc. A punch 17 is removably attached to the upper turret 13. The punch 17 is disposed on a circular cone, which is the center of rotation of the upper turret 13, and is appropriately spaced apart from the punch in the circumferential direction. An appropriate number of dies 19 corresponding to the plurality of punches 17 are removably mounted on the lower turret 15.

The upper and lower turrets 13, 15 are synchronously rotated in the same direction by a turret drive mechanism (not shown), and are indexed and stopped at a predetermined position. Upper turret 13
The punch 17 mounted on the upper frame 9 is struck by a striker 25 that moves up and down via a ram operating section 23 provided in the upper frame 9 at the processing station 21.

A fixed table 27 on which the workpiece W is placed is provided on the other side (right side in FIG. 7) of the lower frame 3, and a fixed table 27 is provided in the front-rear direction (vertical direction in FIG. 8) of the fixed table 27. A movable table 29 on which a workpiece W is placed and supported together with the table 27 is mounted so as to be movable in the left-right direction (left-right direction in FIG. 8).

The front and rear movable tables 29 are integrally connected via a carriage base 31 extending at one end in a direction perpendicular to the direction of movement.
1 is equipped with a carriage 33 that is slidable in the same direction as the longitudinal direction of the carriage base 31. An appropriate number of workpiece clamps 35 that can freely clamp the ends of the workpiece W are attached to the carriage 33 so as to be movable and fixed in the moving direction of the carriage 33.

A carriage 3 is disposed in the longitudinal direction of the carriage base 31.
A ball screw 37 equipped with an X-axis peripheral drive motor 3 is provided to the ball screw 37 via a transmission member
9 are linked together.

With the above configuration, when the X-axis circumferential drive motor 39 is driven, the carriage 33 is moved in the front-back direction (
Hereinafter, this will be referred to as the X-axis direction. ) will be moved to Note that one end of the carriage base 31 is connected to the Y-axis circumferential drive motor 4.
1, and by driving the Y-axis peripheral drive motor 41, the carriage base 31 is moved in the left-right direction (hereinafter referred to as the Y-axis direction).

Therefore, the work W held between the work clamps 35
will be moved in the X-axis and Y-axis directions.

As shown in FIG. 6, the various punches 17 attached to the processing station of the upper turret 13 in FIG. A stepped hole H is formed as a hole in accordance with the specifications of each punch 17 (upper end in FIG. 6). This stepped hole H has a depth A and a depth B. By measuring the depths A and B, the size and shape of the punch 17 can be identified. In addition, punch 1
It is easy to form the stepped hole H at the rear end of the punch 17, and the stepped hole H is formed approximately at the center of the rear end of the punch 17.
Since it is used for processing, the composition has sufficient mechanical strength and does not pose any problems with respect to impact during punching.

FIG. 5 shows the relationship between the preset hole depth A of the stepped hole H formed in each punch 17 and the shape of the punch 17, and the relationship between the preset hole depth B and the size of the punch 17. As shown in (A> and (B)), it is filed in a conversion table.

For example, the hole depth dimensions of the punch 17 are determined by a hole depth measuring device as a measuring means, which will be described in detail later, to be A=5u+, B
= 10.51 [R]. From the conversion table in Fig. 5 (A> and (B)), the identification means identifies that it is a round punch of φ12.5, and the tool code is "1".
2" is detected, and this tool code "12" is transferred to the NC device or automatic programming device to manage the punch die.

The hole depth measuring device 43 is provided above the punch 17A mounted on the processing station shown in FIG. 8, for example. The hole depth measuring device 43 is mounted at a location shifted, for example, by one row from the mold replacement position, so that it does not interfere with mold replacement.

This hole depth measuring device 43 has a configuration as shown in FIGS. 3 and 4. That is, in FIGS. 3 and 4, a stylus guide block 47 is provided on the lower side of the base plate 45. As shown in FIGS. A hollow cylindrical first stylus 51 is mounted inside the stylus guide block 47 via a plurality of guide bushes 49 and is movable up and down.

A second stylus 55 is mounted within the first stylus 51 and is movable up and down via a plurality of guide bushes 53 . The first stylus 51. Racks 57 and 59 extending in the vertical direction are integrally provided on the upper side of the stylus 55 of the IW2.

A first stylus encoder 63 is provided on the base plate 45 via a mounting bracket 61, and a second stylus encoder 67 is provided via the mounting bracket 65. A binion 69 is attached to the output shaft of the first stylus encoder 63, and this binion 69 is meshed with the rack 57. Further, a binion 71 is attached to the output shaft of the second stylus encoder 67, and the rack 59 is meshed with the binion 71.

The base plate 45 is provided with a first stylus air cylinder 73. A second stylus air cylinder 75 is provided, and one end of a support plate 79 is attached to the tip of a piston rod 77 attached to the first stylus air cylinder 73. The other end is integrally provided at the upper end of the first stylus 51. Further, one end of a support plate 83 is attached to the tip of a piston rod 81 attached to the second stylus air cylinder 75, and the other end of the support plate 83 is attached to the second stylus air cylinder 75.
It is integrated into the upper end of the .

With the above configuration, the first stylus air cylinder 73
When actuated, the piston rod 77° support plate 7
9, the first stylus 51 is moved up and down. For example, the first stylus 51 is lowered, and the tip of the first stylus 51 is inserted into the stepped hole H in the punch 17 and comes into contact with the stepped portion. Thus, the six binions meshed with the rack 57 rotate, and the amount of rotation is detected by the first stylus encoder 63, and the depth A is measured.

Furthermore, when the second stylus encoder 75 is actuated, the piston rod 81. The second stylus 55 is moved up and down via the support plate 83. For example, the second stylus 55 is lowered and the second stylus 55
The tip of the punch 17 is inserted into the stepped hole 1-1f, and comes into contact with the bottom of the stepped hole H. Therefore, rack 59
The piston 71 meshed with rotates, and the amount of rotation is the second
The depth B is detected by the stylus encoder 67 and the depth B is measured.

A control configuration block diagram of a control device in an automatic identification device for identifying various punches 17 mounted on the upper turret 13 is shown in FIG. In FIG. 1, CPU85
to the first stylus encoder 63. through counters 87.89. A second stylus encoder 65 is connected.

Further, the hole depth measuring device 43. is connected to the CPU 85 via the DI/DO 91. An operation panel 93 is connected.

The CPU 85 has a ROM 95. A RAM 97 is connected, and a ROM 95 stores a program for implementing the functions of this device, and is also filled with conversion tables as shown in FIGS. 5<A) and <8). Moreover, the ROM 95 includes a first stylus encoder 63.
．． There is provided means for detecting the number of revolutions detected by the second stylus encoder 67 by referring to a conversion table by importing measurement data via counters 87 and 89, that is, identification means. In addition, the RAM
97, a program is temporarily stored for program execution.

The CPU 85 is connected to the NC device 101 of the turret punch press 1 explained in FIGS. 7 and 8 via S099. Further, the automatic programming device 105 may be connected to the 5I099.

The operation of automatically identifying the punch 17 with the above configuration will be explained based on the flowchart shown in FIG. First, in step S1, initial values of the control device are set. In step S2, it is determined whether or not it is necessary to perform the O reset process for the counters 87, 89. If it is necessary to perform the O reset process, the counter 87, 89 is determined in step S3.
The O reset process is performed and the process returns to before step S2.

If it is not necessary to reset the counters 87 and 89 to O in step S2, the process advances to step S3.

In step S3, it is determined whether or not to start detecting the hole depth measuring bag M43, and if the detection is not started, the process returns to before step S2. If it is determined that the detection activation is to be performed, the first . A command to lower the second stylus 51,55 is issued from the operation panel 93 or the NC device 101, for example. So, first. The second stylus air cylinder 73,75 is actuated and the first stylus air cylinder 73.75 is activated. Second stylus 51.
55 descends.

In step S5, the encoder pulses of the first stylus encoder 63 are counted by the counter 87. Further, in step S6, the encoder pulses of the second stylus encoder 67 are counted by the counter 89. In addition,
1st. The second stylus 51.55 is lowered and the first stylus 51.55 is lowered.
When the tips of the second stylus 51, 55 reach the top surface of the punch 17, the counters 87, 89 are reset to zero in advance. And the first. Second stylus 51.5
Each tip of 5 is a stepped portion of hole H of punch 17.

When it comes into contact with the bottom, the count as measurement data is taken into the ROM 95 from the counters 87 and 89.

The count loaded into the ROM 95 in step S7 is determined by searching or identifying the shape and size of the punch 17 by referring to a conversion table (for example, FIG. 5 (A>, (B)) stored in the ROM 95 in advance. , step S8
The tool code corresponding to the shape and size is sent to the NC device 101.
Or output to the automatic programming device 103. In step S9, it is determined whether or not to continue detection using the hole depth measuring device 43. If it is determined that detection should be continued, the process returns to before step S2 and is repeated. If it is determined that detection is not to be continued, the process ends at that point.

In this way, the stepped hole H is formed at the rear end of the punch 17, and the depth of the stepped hole H is measured by the hole depth measuring device 43, and the pre-stored stepped hole H setting is performed. depth and punch 1
Referring to the conversion table of the relationship between shape and size in section 7,
The shape and size of the punch 17 can be identified based on the measurement data, and the corresponding tool code can be automatically and easily transferred to the NC device 101 or the automatic programming device 103.

The punch molds can be managed based on the identified shape and size of the punch 17, that is, the tool code.

That is, for example, it is possible to automatically detect and identify the specifications of a punch die already installed in the turret punch press and feed it back to the automatic programming device 103, thereby creating a program that matches the die situation of the turret punch press 1. can be created.

Furthermore, it is possible to create a master file for the mold owned by the user and to link this with the automatic programming device 103. Furthermore, since it is possible to manage the specification history of each mold, it is possible to manage the timing of replacement and re-sharpening to ensure machining accuracy.

In the embodiment described above, the shape and size of the punch 17 are identified by forming a stepped hole H at the rear end of the punch 17, but in another embodiment, a stepped hole H is formed at the rear end of the punch 17. The shape and size of the punch 17 can also be identified by forming a straight hole H3 as shown in FIG. In this case, the hole depth measuring device 43 is used to measure the depth C of the straight hole)-Is using only the second stylus 55 without using the first stylus 51, and
By using conversion tables such as those shown in FIGS. 10(A) and 10(B), the shape and size of the punch 17, that is, the tool code, can be identified. For example, the hole depth measuring device 43 measures the straight hole 1-1s.
If the depth of
From Figure 0 (B), it can be identified that the tool code is 13''.Furthermore, although the details of the control wJ query block diagram in this example are omitted, in Figure 1, the first stylus This can be done by using the conversion table from FIG. 5 (A>, (B) to FIG. 10 (A), (B) without using the encoder 63 and counter 87. Also,
The operation is also almost the same as that in the flowchart of FIG. 2, and the effect is almost the same as that of the previous example.

As another example, the depth A of the stepped hole H shown in FIG.
It is also possible to identify the shape and size of the punch 17 by measuring the diameter instead of B and measuring E. A diameter measuring device 105 as a measuring means in this case is shown in FIG. This diameter measuring device @105 is, for example, the punch 17 mounted next to the punch 17A in FIG.
It is provided above B.

In Fig. 11, air cylinders 707R,
107L is provided, and this air cylinder 107R
, 107L are fitted with downwardly extending piston rods 109R, 109L, respectively. Support plates 1 are attached to the tips of the pistons 109R and 1091.
11 are integrally provided.

Piston rod 109 in this support plate 111
There are support brackets 113R and 11 inside R and 109L.
3L is installed. This support bracket 113R
and 113L, a screw 115 composed of a right-handed screw 115R and a left-handed screw 115L extends in the left-right direction and is rotatably supported.

The piston rod 109R and the support bracket 115R
A drive motor 117 such as a servo motor is provided on the support plate 111 between the support plate 111 and the drive motor 117, and an encoder 179 is provided on the drive motor 117. Further, the output shaft of this drive motor 117 is connected to the cloth screw 115.
It is connected to one end of R.

A measuring member 121R is screwed onto the cloth screw 115R, and a measuring member 121L is screwed onto the left-hand thread 115L.

With the above configuration, when measuring the diameter of the stepped hole H of the punch 17, when the drive motor 117 is driven, the right-hand thread 115R of the screw 115 connected to the output shaft and the left-hand thread 11
5L rotates, and the measurement members 121R and 121L move toward each other and come into contact with each other. The counter in encoder 119 at this point is reset to O. Next, when the air cylinders 107R and 107L are operated, the piston rods 109R and 109L are processed and stopped when the tips of the measuring members 121R and 121L enter the diameter. Furthermore, the drive motor 117
When driven to rotate in the opposite direction to the above-mentioned rotational direction, the measuring members 121R and 121L move in a direction away from each other, and the tips of the measuring members 119R and 119L come into contact with the inner periphery of the diameter. . The diameter diameter is measured by detecting the count number of the counter in the encoder 119 at this time.

In addition, when measuring the diameter E of the stepped hole H in the punch 17, the operation is almost the same as that described above, but the measurement member 1
The difference is that 19R and 119L are placed in the diameter E instead of being placed in the diameter while they are in contact with each other, and the other details are the same, so a detailed explanation will be omitted.

By creating a conversion table using the diameter and E in advance, the shape and size of the punch 17 can be identified based on the same concept as the depths A and B of the stepped hole H described above. Although detailed explanations of the control configuration and operation will be omitted, substantially the same effects as in the previous example can be obtained.

Note that this invention is not limited to the embodiments described above, and can be implemented in other forms by making appropriate changes. For example, the shape of the punch 17 can be determined by measuring the diameter F of the straight hole H3 formed at the rear end of the punch 19 shown in FIG.

This can also be done by identifying the size. The diameter F in this case is measured using the second stylus 5 shown in FIG.
Measurement can be performed by making the tip of No. 5 into a conical shape.

In addition, in this embodiment, the depth and diameter of each hole formed at the rear end of the punch 17 are measured, and specification information regarding the shape and size of the punch 17 is identified based on the measured measurement data. However, if both the depth and diameter formed at the rear end of the punch 17 are combined, an even better punch 1 can be obtained.
7 shape and size specification information can be identified.

Furthermore, although an example is shown in which an encoder is used as a detection sensor for measuring the depth and diameter of the depth measuring device 43 and the diameter measuring device 105, an ultrasonic sensor! It may be a 1-ki sensor or the like.

[Effects of the Invention] As can be understood from the above description of the embodiments, according to the present invention, a hole is formed according to specification information at the rear end portion of the punch die corresponding to the tip end of the cutting edge. The size, shape, or both of the holes are measured by a measuring means. Further, the relationship between the punch die specification information and the preset hole setting data is stored in a conversion table.

The measurement data of the hole measured by the measurement means and the conversion table are taken into the identification means, and the specification information of the punch die corresponding to the measurement data of the hole can be easily and automatically identified, A tool code based on the specification information of the identified punch die is output to an NG device, an automatic programming device, etc., and can be used for management of the punch die.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the configuration of a control II device related to an automatic punch die identification device according to the present invention, and FIG. 2 is a flowchart illustrating the operation according to the present invention. Figure 3 is a front sectional view of the depth measuring device, Figure 4 is a side view of Figure 3, Figures 5 (A) and (B) are examples of conversion tables, and Figure 6 is the rear end of the punch. FIG. 7 is a front view of a turret punch press equipped with an automatic identification device according to the present invention, FIG. 8 is a plan view of FIG. 7, and FIG. 9 is a diagram of a punch An example of a cross section with a straight hole formed in the rear end, FIG. 10 (A
). (B) is a diagram showing an example of a conversion table corresponding to a straight hole, and FIG. 11 is a front view showing an example of a diameter measuring device. 1...Turret punch breath 17...Punch 43
... Hole depth measuring device 63 ... First stylus encoder 65 ... Second stylus encoder 87. 89 ... Counter 95 ... ROMH ... Stepped hole 1'' S. ... Straight hole agent Patent attorney Yasu Miyoshi 1 ... Turret punch press 17 ... Punch 43 ... Hole depth measuring device 63 ... First stylus encoder 65 ... Second Stylus encoder 87.89...Counter 95...ROM H...Stepped hole Hs...Straight hole 1 code No. 5i (A) Fig. 6 Size code No. 51!1 (B) Figure 7 Figure 8 Figure 10 (A) Figure 9 Figure 110 r! 1(B) Figure 11

Claims (2)

[Claims] (1) A hole is formed in the rear end corresponding to the tip of the punch mold's cutting edge in accordance with the punch mold specification information, the size and/or shape of this hole is measured, and based on this measurement data, A punch mold automatic identification method characterized by automatically identifying punch specification information. (2) A punch mold in which a hole is formed in the rear end corresponding to the tip of the cutting edge according to specification information, and a measuring means for measuring the size or shape of the hole formed in the punch mold, or both. , a conversion table storing a relationship between specification information of the punch die and preset setting data of the hole, and measurement data of the hole measured by the measurement means and the conversion table are imported. 1. An automatic punch mold identification device comprising: identification means for automatically identifying specification information of a punch mold corresponding to hole measurement data.