JPH0715615Y2 - Numerically controlled plate processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention attaches a flat rectangular plate material to a plate material transfer positioning device at an end thereof, and before performing processing such as punching or cutting the plate material. A plate material processing machine equipped with means for measuring and calculating the actual size of the plate material mounted on the positioning device and determining whether or not the calculated dimension value is appropriate for the dimension value of the plate material that has been input by operation in advance. And, it is possible to correct a processing program based on a plate material dimension value that is input by operation with reference to a processing origin fixedly provided in advance to the plate material processing machine to an appropriate processing program based on the calculated dimension value. Numerical control equipped with a correctable means (hereinafter NC
That is) a plate material processing machine.

[Conventional technology]

Generally, in an NC plate processing machine equipped with a plate material transfer / positioning device on a conveyor table, the size of the plate material to be processed can be confirmed by visually reading the numerical value entered on the surface of the plate material or pasting it on the surface of the plate material. The barcode label is read by a barcode reader.

In addition, the plate material before processing whose dimensions were confirmed in this way is
First of all, it is necessary to accurately position it on the carrier and mount it on the plate material transfer positioning device. When the plate material is mounted on the positioning device, first, the side of the plate material to be the workpiece in one direction is positioned, and then the side of the plate material in the direction orthogonal to this direction is positioned, and the plate material on the carrier table is positioned. Complete the positioning. Next, machining formed based on the longitudinal and lateral dimension values (hereinafter simply referred to as dimension values) of the sheet material that have been input by operation with one machining origin fixedly provided on the NC sheet material processing machine as a reference. According to the program, this plate material is transferred to the processing position and positioned, and various processing is performed on this plate material.

[Problems to be solved by the device]

However, the method of visually reading the numerical value directly written on the surface of the plate material has the problem that the numerical value has disappeared or it has to disappear when the numerical value is no longer needed, that is, after finishing the machining. Such contents can hardly be adopted in an automated processing line.

In addition, the method of reading the bar code label pasted on the surface of the plate material can be incorporated into the automatic processing line, but for that reason, it takes time and effort to stick the bar code, or the bar code becomes unreadable when it becomes dirty. There is a problem such as a reading error.

Moreover, since the actual cutting dimension value of the plate material before processing is different from the dimension value of the plate material that was the reference of the processing program that was input into the NC device in advance, the processing position of the plate material is A deviation may occur between the processing position viewed from the two sides of the plate material which is the reference for forming the origin and the processing positions viewed from the other two sides facing these two sides. In such a case, When the deviation has to be within a predetermined allowable value, the processing position of the plate material may not be within the allowable value. This is clear from the description shown in the plan view of FIG.

That is, in FIG. 6, each side of the plate material 6 mounted on the plate material transfer positioning device 7 is designated as 6a, 6b, 6c, 6d, respectively, and the point where the sides 6a, 6b are orthogonal to each other is defined as a machining origin 8 and this machining is performed. Consider a case where press working is performed at the working position 26 with the origin 8 as a reference.

In FIG. 6, the broken line portion 6l 'shows the plane shape of the plate material according to the dimension value of the plate material 6 which is operated and input to the NC device, and the solid line portion 6l shows the plane shape of the plate material according to the cutting dimension value of the plate material 6. , The dimension values (l ₁ + L ₁ ), (l ₂ + L ₁ ) of the machining program input by operation for this plate material 6.
_In contrast to ₂ ), it can be seen that there are dimensional errors of α ₁ and α _{2 in} the vertical and horizontal directions, respectively.

When press working is performed on the processing position 26 according to the processing program based on the dimension value of the plate material 6 which is input in this state, the processing position 26 is X, Y based on the processing origin 8 of the plate material 6.
This means that they were pressed at positions l ₁ and l _{2 in} the axial direction.

On the other hand, with respect to the processing position 26 for the two sides 6a, 6b for which the processing origin 8 has been set, the two sides 6 opposed to these sides 6a, 6b
The dimension values of the processing position 26 viewed from c and 6d are (L ₁ + α ₁ ) and (L ₂ + α ₂ ) respectively in the X and Y axis directions.

However, here, when the dimensional value of the processing position 26 viewed from the opposite sides 6c, 6d requires an allowable value less than the dimensional errors α ₁ and α ₂ , the press working is performed under the above conditions. Plate 6
Will be defective.

Therefore, in the conventional technology, the dimension value of the cut plate material is measured in advance and the machining program based on the machining origin is operated and input to the NC device based on the value, or it is larger than the dimension value input in advance. The method of keeping the dimensional value of the processing position within the allowable value is performed by cutting the plate material of the above accurately to match the dimensional value of the machining program input by operation or by punching press machining. However, there is a problem in that these operations require a great deal of time, and a part of the plate material is wasted when the cutting or punching press processing is performed.

The present invention eliminates the above-mentioned conventional problems, that is, the work of writing dimension values on a plate material and pasting a bar code on the plate material, and checking the size of the plate material automatically to perform follow-up processing after processing. The task was to develop an unnecessary NC plate processing machine.

[Means for Solving the Problems]

The configuration of the present invention made to solve the former of the above problems is a numerical value in which the end portion of the plate material is attached to the plate material transfer positioning device, and positioning is performed by numerical control to perform processing such as drilling, cutting, tapping, and drawing. In the control plate material processing machine, a pin-shaped probe contacting one side edge of the plate material is provided so as to be retractable in the vertical direction by a drive means, and the drive means is supported so as to be horizontally movable in one axis direction, and When the plate member is positioned by the transfer positioning device and one side edge of the plate member is brought into contact with the tracing stylus and is moved backward, the position detecting rod is provided for detecting the amount of horizontal movement. A movement amount detecting device for detecting the backward movement amount of the detection rod is arranged on the plate material processing machine such that the movable direction of the detection rod is parallel to the X axis and the Y axis of the plate material processing machine. And, prior to applying the processing to the plate,
The plate material is moved and moved by a predetermined amount in the X-axis and Y-axis directions to bring one side edge of the plate material into contact with the probe of the detection device, and based on the detection signal obtained by the detection device, the plate material transfer positioning device. It is characterized in that a discriminating means for discriminating whether or not the computed plate material dimension is appropriate with respect to the plate material dimension value which has been operated and inputted in advance is provided. Further, the structure of the present invention made to solve the latter of the above-mentioned problems is an NC plate material processing machine equipped with the position detecting device having the above-mentioned structure, in accordance with a detection signal obtained from the detecting device. It is characterized in that it has a correction means for correcting a machining program based on a plate material dimension value input by operation based on one machining origin fixedly provided on the machining machine into an appropriate machining program. Furthermore, the above When it is determined by another means that the plate material size is proper, it has a correction means for correcting the machining program input in advance based on the calculated value to an appropriate machining program.

[Action]

The present invention, in the NC plate material processing machine, is provided with a detection device for detecting the position of one side edge of the plate material when the plate material is horizontally moved by a predetermined amount for machining positioning, and before processing the plate material, Obtained by calculating the actual size of the mounted plate material based on the detection signal from the detection device. Therefore, even if there is no size indication on the plate material, it is installed for the plate material dimension value input by operation. It is possible to easily determine whether or not the plate material has an appropriate size.

Next, based on the detection signal of the detection device that has detected the position of the one side edge of the plate material that is calculated by calculating the actual dimensions, the operation is performed with reference to one processing origin fixedly provided in the plate material processing machine. By correcting the machining program based on the input plate dimension value to an appropriate machining program, the plate material is machined at the predetermined machining position with reference to the two sides forming the machining origin of the plate material and also with the opposite sides as the reference. It is intended to solve the problems of the prior art.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a partial plan view in which a part of an NC turret punch press 1 incorporating two detection devices 22 and 23 in the present invention is omitted. Here, a plate material is transferred in the X-axis and Y-axis directions of the drawing. The plate material 6 before punching is mounted on the plate material transfer positioning device 7 for performing the positioning.

A machining origin 8 is set on the moving table 2 of the NC turret punch press 1 by a plate material transfer positioning device 7 and an origin pin 9, and the plate material transfer positioning device 7 sets the plate material 6 on the basis of the machining origin 8. It is adapted to be transferred and positioned with respect to the processing point 5.

The two detection devices 22 and 23 have the same structure, and the first detection device 22 positions the one side edge 6c of the plate 6 and the second detection device 23 the other side end of the plate 6. Since it is for detecting the position of the edge 6d, the X axis and Y on the main body base 4 are respectively detected.
It is provided along the axis.

FIG. 2 shows an enlarged plan view of the detection device 22 (23) of the present invention. FIG. 3 is a sectional view taken along the line II of FIG. 2, and FIG. 4 is the device 22 shown in FIG. The detection state of (23) is shown.

According to these FIGS. 2 to 4, the detection device 22 (23)
The configuration will be described below.

The pin-shaped probe 10 is attached to the tip of a rod 11a of an ascending cylinder 11 arranged substantially vertically, and the ascending cylinder 11 is fixed to a support plate 12 upward. Further, the fixed table 3 above the detection device 22 (23) is attached to the fixed table 3 when the lift cylinder 11 is lifted.
The notch 3a is provided so as not to interfere with the. The support plate 12 to which the lifting cylinder 11 is fixed is slidably held by the pilot bar 14 via the support sleeve 13. That is, the support sleeve 13 is the main body base 4
It is provided so as to be movable back and forth on a pilot bar 14 whose both ends are supported by blocks 18 and 19 which are fixed on a plate 20 arranged above.

Further, the support plate 12 is constantly moved in the forward direction (second to fourth positions) by the spring 15 inserted in the pilot bar 14.
Although it is pushed and positioned to the left (in the figure), one side edge of the plate member 6 that has moved to the stylus 10 in the raised position by the raising cylinder 11 comes into contact with the stylus (second to second). 4 Rightward) Moved.

The pilot bar 14 is provided with a position detecting rod 16 in parallel with the bar 14, and the position detecting rod 16 is arranged such that its tip is brought into contact with the side surface of the support plate 12 and is movable back and forth in the axial direction thereof. Further, the spring 17 always pushes in the forward direction (leftward in FIGS. 2 to 4). At the rear end side of this position detection rod 16, a variable resistor 21
Is provided and the rear end of the rod 16 is connected to the slider 21a of the resistor 21, so that the change in the resistance value due to the displacement of the position detection rod 16 is detected by the output voltage.

The operation of the position detecting device 22 (23) configured as described above will be described with reference to FIG. 5 for the NC turret punch press 1 which is an embodiment of the present invention.

First, the actual distance (Xa, Ya) and the position detection at this (Xa, Ya) from the machining origin 8 fixedly set to the NC turret punch press 1 at an almost intermediate position where the probe 10 can retract. An output voltage value (or a difference between input and output voltage values) of the variable resistor 21 by the rod 16 is preset.

Next, before punching by the machining program based on the dimension value (Xb, Yb) of the predetermined plate material 6 which has been input in advance on the basis of the machining origin 8 fixed to the NC turret punch press 1, the plate material is A predetermined amount (Xc, Xc, which moves the actual plate material 6 mounted on the transfer positioning device 7 to an intermediate position of the amount by which the plate material 6 is moved with the machining origin 8 as a reference and the probe 10 can be retracted. Yc) is moved in the X and Y axis directions for positioning.

Here, if the actual dimension value of the actual plate material 6 mounted on the moving positioning device 7 is (Xe, Ye), this plate material 6 is moved and positioned by the above-mentioned predetermined motion amount (Xc, Yc). The other side edges 6c and 6d of 6 come into contact with the measuring element 10 of the first detecting device 22 and the second detecting device 23 protruding above the fixed table 3 and retract the measuring element 10 excessively. Let

That is, since there is a difference between the dimension value (Xb, Yb) of the predetermined plate material 6 used as the standard of the machining program and the actual plate material dimension (Xe, Ye), the retreat position of the probe 10 is set to the X-axis. The difference (Xf, Yf) of Xe-Xb in the direction and Ye-Yb in the Y-axis direction occurs.

This difference (Xf, Yf) causes the tracing stylus 10 of each of the detection devices 22 and 23 to move backward by an extra amount,
The respective support plates 12 supporting the respective ascending cylinders 11 equipped with these tracing styluses 10 and the position detection rods 16 abutting on the respective support plates 12 are further moved backward by that amount. As a result, the output value of the variable resistor 21 becomes the position detection rod.
Since the value corresponding to the difference (Xf, Yf) in the backward movement amount of 16 is indicated, this value is arithmetically processed with the value indicating the dimensional value of the plate material 6 which is the basis of the machining program, thereby the installed plate material 6 The actual dimensional value of is obtained.

In short, according to the present invention, the distance (Xa, Ya) from the machining origin 8 and the variable resistance at that position at an approximately intermediate position of the amount by which the probe 10 of the detection device 22, 23 can retract with respect to the machining origin 8. The output voltage value (or the difference between input and output voltage values) of 21 is set in advance, and the dimension value (X value of the plate material (X
The transfer positioning device 7 is driven by a predetermined movement amount (Xc, Yc) less b, Yb), the mounted plate material 6 is transferred and positioned, and appears in the variable resistance 21 of the detection devices 22 and 23 at this positioning. The resistance value is promoted as a difference (Xf, Xf) in the amount of movement caused by the difference in the size of the plate material 6, and the mounted plate material 6
The actual dimension value (Xe, Ye) of the sheet material 6 calculated above is calculated with respect to the sheet material dimension value (Xb, Yb) that has been input to the controller of the NC sheet material processing machine in advance by calculating the actual dimension value of It is determined whether it is proper or not.

Next, the detection devices 22 and 2 having the above-mentioned configuration and action and effect
An example of the operation of the NC turret punch press 1 that includes 3 and has a processing program correction means will be described.

That is, when it is determined that the calculated actual dimension value (Xe, Ye) of the plate material 6 is within the allowable value, the processing program based on the dimension value of the plate material 6 which is input in advance by the detection signal. Is corrected to an appropriate machining program. After that, if the plate material 6 is punched,
It is possible to secure the processing position 26 within the allowable range when viewed from any of the sides 6a to 6d of the plate member 6.

In implementing the present invention, the machining program may be corrected to an appropriate machining program based on the actual dimension value of the plate material obtained by the above calculation, or the actual dimension value may be calculated. Alternatively, it may be simply determined whether or not the material size is appropriate.

FIG. 7 shows the plane of an NC turret punch press provided with another set of detection devices 24, 25 of the same type as the devices 22, 23 for detecting the side edges 6c, 6d of the plate member 6.

This is an example corresponding to the case where the plate material has a bend and the machining dimension requires a predetermined allowable value from the four corners of the plate material 6, and the detection device 22 has two corner sides on the side 6c side, 23 is the left corner of side 6d, 24 is the upper corner of side 6b,
25 detects the right corner of side 6d.

[Effect of device]

As described above, the NC plate material processing machine of the present invention has a pin-shaped probe that abuts on one side edge of the plate material in the X and Y axis directions of the NC plate machine. An elevating and lowering drive means for raising a fixed amount is provided, and this drive means is provided by being attached to a support means movably supported in the horizontal direction, and
The position detecting rod is arranged so as to be movable in the same direction as the horizontal movement direction of the driving means with respect to the driving means, while the plate material is horizontally moved by a predetermined amount so that one end edge of the plate material comes into contact with the probe. This NC plate material processing machine is provided with a detection device that detects the amount of backward movement of the position detection rod that is moved backward by this, and the actual dimensional value of the plate material attached according to the detection signal from the detection device is displayed. It is calculated, and it is determined whether or not the calculated dimension value is within the allowable value of the plate material dimension value that has been input in advance, and based on the calculated dimension value, it is preset in the NC plate material processing machine. Correct the machining program to an appropriate machining program based on the calculated dimension value. Further, if the calculated dimension value is outside the allowable value, plate material processing is not performed, and if it is within the allowable value, NC The machining program based on a plate material dimension value that is preliminarily operated and input is corrected to an appropriate machining program on the basis of one machining origin fixedly provided on the material processing machine to perform machining. . This eliminates the need for pre-filling the dimensions of the plate material to be processed on the surface of the plate material, the preparation of a bar code label, its sticking, and the reading, so these steps can be completely eliminated. Even if there are variations in the dimensions of the plate material, the machining program can be corrected based on the dimension values obtained by calculation to ensure proper plate material processing, and only when the calculated dimension value is within the allowable value. It is possible to obtain various effects that the plate can be processed at a processing position that is an accurate allowed position with respect to any side of the plate material.

Therefore, the plate material processing machine according to the present invention is
This eliminates the need for plate dimension measurement time and the time required for cutting and punching to eliminate variations in plate dimensions, and eliminates the need for cutting and punching parts of the plate, resulting in extremely high economic efficiency. .

In particular, since a side edge of one of the plate members is horizontally moved in the X and Y axis directions by a predetermined amount, and a detection device for detecting the backward movement amount of the position detection rod that is moved backward by the side edges of the plate member is provided, By processing the detection signal obtained by this detection device, it is possible to easily determine the suitability of the plate material size and correct the processing data. Therefore, it is possible to accurately correct the plate material processing program with a simple configuration. The effect that it becomes possible easily is obtained.

Further, when the plate material is transferred and positioned for purposes other than the correction of the machining program, the probe of the detector that contacts the plate material is lowered below the fixed table of the machine, so that the plate material is transferred and positioned for other purposes. In addition, the probe does not interfere with it.

Therefore, the present invention is extremely useful as a numerically controlled plate material processing machine such as a turret punch press machine or a punch press machine.

[Brief description of drawings]

FIG. 1 is a partial plan view of an NC turret punch press showing an embodiment of the present invention, FIG. 2 is an enlarged plan view of a position detecting device, FIG. 3 is a sectional view taken along the line II of FIG. 2, and FIG. FIG. 5 is a view showing the detection state of the apparatus of FIG. 3, FIG. 5 is a plan view showing an example of plate material transfer positioning of a turret punch press in one embodiment of the present invention, and FIG. FIG. 7 is a plan view for explaining the occurrence of processing dimension defects, and FIG. 7 is a plan view of another example of the present invention. 1 ... NC turret punch press, 2 ... moving table,
3 ... Fixed table, 4 ... Main body base, 5 ... Machining point, 6 ... Plate material, 7 ... Plate material transfer positioning device, 8 ...
Machining origin, 9 ... Origin pin, 10 ... Measuring element, 11 ... Lifting cylinder, 12 ... Support plate, 13 ... Support sleeve, 14 ... Pilot bar, 15 ... Spring, 16 ...
Position detection rod, 17 ... Spring, 18 ... Block,
19 …… Block, 20 …… Plate, 21 …… Variable resistance, 22
...... First position detection device, 23 …… Second position detection device,
26 …… Processing position,

Claims (3)

[Scope of utility model registration request] 1. A numerical control plate material processing machine for mounting an end portion of a plate material in a plate material transfer / positioning device, and performing positioning such as drilling, cutting, tapping, and drawing by numerical control, wherein one side end of the plate material is provided. A pin-shaped probe contacting the edge is provided by a drive means so as to be vertically retractable, the drive means is supported so as to be horizontally movable in one axis direction, and a position detection rod for detecting the amount of this horizontal movement is provided. When the plate member is positioned by the transfer positioning device and one side edge of the plate member abuts on the tracing stylus and is moved backward, the backward movement amount of the detection rod is detected. The movement amount detecting device is arranged on the plate material processing machine with the movable direction of the detection rod parallel to the X axis and the Y axis of the plate material processing machine, and the plate material is processed before the plate material is processed. The X-axis and Y-axis direction of an end edge of the plate member is moved a predetermined amount is brought into contact in the measuring element of the detection device, on the basis of the detection signals obtained with the detection device,
It is characterized in that a discriminating means for discriminating whether or not the computed plate material dimension is appropriate with respect to the plate material dimension value which has been operated and inputted in advance is provided. Numerically controlled plate processing machine. 2. A plate material dimension value which is operated and input according to a detection signal obtained from the detection device according to claim 1 with reference to one processing origin fixedly provided in a numerically controlled plate material processing machine. A numerical control plate material processing machine having a correction means for correcting a processing program based on the above into an appropriate processing program. 3. The size of the plate material mounted on the plate material movement positioning device is calculated based on the detection signal obtained from the detection device according to claim 1, and it is determined whether or not the calculated size value is appropriate. Then, based on the calculated value when appropriate,
A numerically controlled plate material processing machine comprising: a correction unit that corrects a previously input processing program into an appropriate processing program.