JP4558926B2 - Bending system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bending angle measuring method and apparatus for measuring a bending angle of a workpiece bent by a bending machine, and a bending method and bending system using the apparatus.
[0002]
[Prior art]
Conventionally, as a bending angle detection device for detecting the bending angle of a bent workpiece, one side of the workpiece is brought into contact with the reference surface, and the other side of the workpiece is pressed against the rotor to rotate the rotor at this time. Is detected as a bending angle, and the detected bending angle is transmitted to the NC device of the bending machine using radio waves.
[0003]
[Problems to be solved by the invention]
However, in such a conventional technique, since the bending angle detected by the bending angle detection device is transmitted to the NC device of the bending machine using radio waves, for example, it is in the same factory as the bending machine. There is a problem that it is easily affected by noise from other machines, particularly, for example, a welding machine used after the bending process, and the reach distance of the bending angle signal is shortened.
[0004]
In addition, the radio frequency used to transmit the angle signal in the bending angle detection device described above approximates the operating frequency of an electronic circuit normally used in an NC device of a processing machine. As a result, the electronic circuit may be adversely affected. For this reason, a situation in which the ram of the bending machine operates without a command due to a malfunction of the NC device or does not stop at a predetermined position contrary to the command occurs. But there is a problem.
[0005]
Furthermore, since the frequency band that can be used to transmit the angle signal in the bending angle detection device described above varies from country to country, a different radio transmitter must be used in each country, resulting in a cost increase of the device. is there.
[0006]
The object of the present invention is made by paying attention to the problems of the prior art as described above, and the angle signal detected by the bending angle detection device is affected by noise generated by other machines. And a bending angle measurement method and apparatus capable of accurately transmitting to an NC apparatus on the processing machine side and improving the machining accuracy, and a bending method and bending system using the apparatus. .
[0007]
[Means for Solving the Problems]
In order to achieve the object, according to claim 1 The bending processing system includes a bending angle measuring device that measures a bending angle of a workpiece bent by a bending machine and transmits an angle signal measured to the bending machine using infrared rays as a medium, and is detachable from the bending machine. An infrared receiver that receives infrared rays from the bending angle measuring device, and a correction angle calculation unit that calculates a correction angle from an angle signal received by the infrared receiver and a preset target angle; A correction D value calculation unit that calculates a correction D value to correct the D value based on the correction angle calculated by the correction angle calculation unit, and the angle signal and the correction angle calculated by the correction angle calculation unit are displayed. A bending system having a display means for measuring the flange length and the plate thickness of the bent workpiece, A length measuring device with an infrared unit for transmitting to the infrared light receiver as a body, a signal determining means for determining whether a signal received by the infrared light receiver is an angle signal or a length measuring signal, and with the infrared unit And a correction L value calculation unit that corrects an L value that is a back gauge position for positioning a workpiece during processing based on a flange length signal from a length measuring device. .
[0020]
Therefore, the bending angle of the workpiece bent by the bending angle measuring device is measured and transmitted to the infrared ray receiver attached to the bending machine by infrared rays, and the correction angle calculation unit is set with a preset target angle and The correction angle is calculated based on the angle signal received by the infrared receiver, and the correction D value calculation unit calculates the correction D value based on the calculated correction angle. In addition to correction, the display means displays an angle signal indicating the measurement angle and a correction angle. In addition, the flange length and actual plate thickness of the workpiece bent by the infrared uni and the length measuring device are measured, and a length measurement signal is transmitted to the infrared light receiver attached to the bending machine using infrared as a medium. When the signal discriminating means discriminates whether it is a length measurement signal or an angle signal generated by a bending angle measuring device, and if it is discriminated that it is a length measurement signal, the correction L value calculation unit Based on the sent flange length signal, a correction L value for correcting the L value is calculated. .
[0021]
According to claim 2 The bending processing system includes a bending angle measuring device that measures a bending angle of a workpiece bent by a bending machine and transmits an angle signal measured to the bending machine using infrared rays as a medium, and is detachable from the bending machine. An infrared receiver that receives infrared rays from the bending angle measuring device, and a correction angle calculation unit that calculates a correction angle from an angle signal received by the infrared receiver and a preset target angle; A correction D value calculation unit that calculates a correction D value to correct the D value based on the correction angle calculated by the correction angle calculation unit, and the angle signal and the correction angle calculated by the correction angle calculation unit are displayed. In the bending processing system comprising the display means, the infrared receiver is emitted from the bending angle measuring device and / or the length measuring device with the infrared unit. A light receiving sensor for receiving infrared rays, a case for holding the light receiving sensor, a stay for rotatably supporting the case in the vertical direction, a magnet for attaching the stay to an arbitrary position of the bending machine, And an eaves provided on the upper side of the light receiving sensor. .
[0022]
Therefore, the stay of the infrared receiver can be attached to an arbitrary place of the bending machine by a magnet, and holds an infrared sensor that receives infrared rays emitted from a bending angle measuring device and / or a length measuring device with an infrared unit. The case is attached to the stay so as to be pivotable in the vertical direction. In addition, the eaves provided on the upper side of the infrared sensor blocks the incoming light beam .
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0028]
1 to 3 show a bending angle measuring apparatus 1 according to the present invention. This bending angle measuring device 1 includes a main body part 3, a resin grip part 5, a measurement reference member 7 as a first support member for bringing a side W0 serving as a reference of the work W into surface contact, and the work W being bent up. A rotor 9 that rotates following the side W1, a display unit 11 that displays the bending angle of the workpiece W by measuring the rotation angle of the rotor 9, and an infrared unit for transmitting the measured bending angle by infrared rays 13 etc. In addition, a battery (not shown) as a power source is housed inside the grip portion 5.
[0029]
The measurement reference member 7 has an L shape as a whole, and one side 15 engages with a vertical groove portion 17 provided on the left end surface of the main body 3 in FIG. It can be fixed by a fixing bolt 21 through a through-hole 19 provided in.
[0030]
That is, the groove portion 17 is provided with a notch 23 in the vertical direction, and a space 25 wider than the notch 23 is provided inside the notch 23. A stop plate 27 provided at the front end (right end in FIG. 3) of the fixing bolt 21 and screwed together is movable up and down along the space 25. By tightening the fixing bolt 21, the stop plate 27 and In this way, the measurement reference member 7 can be fixed at a desired position.
[0031]
Therefore, by loosening the fixing bolt 21, the measurement reference member 7 can move up and down along the groove portion 17 of the main body 3, and by fixing the fixing bolt 21, the measurement reference member 7 can be fixed. The relative height position can be adjusted.
[0032]
The rotor 9 is provided in a protrusion 29 that protrudes from the main body 3 to the upper left in FIG. 1, and is a part of a circle centered on a rotation center shaft 31 provided in the protrusion 29. Yes, it has a planar measuring surface 9A. The rotor 9 is pivotable about the rotation center axis 31 and rotates by contacting the other side W1 of the workpiece W bent up on the measurement surface 9A. Is measured by a detector 33 described later and displayed on the display unit 11.
[0033]
A stopper pin 35 which is a projection for calibration is provided on the outer peripheral surface of the arc portion of the rotor 9. On the other hand, the main body 3 is provided with a stopper 37 so that the rotor 9 is in contact with the rotor 9 when it is rotated by a certain angle so as not to rotate further. Further, a detector 33 for reading the scale of the magnetic scale 39 as a scale provided on the outer periphery of the rotor 9 is provided behind the rotor 9 in the main body 3 (rightward in FIG. 1). Yes.
[0034]
An infrared unit 13 for emitting a bending angle signal detected by the detector 33 to an infrared receiver 41, which will be described later, using infrared rays is provided inside the main body 3, and the right side of the main body 3 in FIG. On the end face is an infrared emitting LED 43 for transmission, an ON / OFF switch 45, an ID switch 47 for sending the ID of the bending angle measuring device 1, and a HOLD command for temporarily storing the angle signal in a storage device (not shown). A switch 49, a DATA switch 51 for instructing the infrared light emitting LED 43 of the infrared unit 13 to emit infrared light with an angle signal, and the like are provided.
[0035]
FIG. 4 shows the configuration of the control unit 53 provided inside the main body unit 3. The control unit 53 includes a CPU 55 that is a central processing unit, and a ROM 57 and a RAM 59 that are storage devices. Further, the interface 61 for inputting the signal from the detector 33, the origin switch 63, the HOLD switch 49, the ON / OFF switch 45 and the like are connected, and the measured bending angle is displayed on the display 11. In addition, the infrared light emitting LED 43 has an interface 67 for emitting a bending angle signal using infrared rays.
[0036]
With reference to FIGS. 5A to 5C, the bending angle measuring operation of the workpiece W will be described.
[0037]
Before performing the measurement, the rotor 9 is first calibrated (origin setting). That is, the ON / OFF switch 45 is turned on, and a skewer (not shown) that is a jig that accurately indicates 90 degrees is pressed against the rotor 9. The origin switch 63 is turned on and the scale of the magnetic scale 39 of the rotor 9 is read by the detector 33 and stored in the RAM 59. Thereby, the position where the rotor 9 accurately indicates 90 degrees is registered.
[0038]
Alternatively, the rotor 9 is rotated so that the stopper pin 35 provided on the rotor 9 abuts on the stopper 37 provided on the main body 3, and in this state, the ON / OFF switch 45 is turned on and the counter ( (Not shown) is cleared to zero and the angle at this time is stored in the RAM 59 as 180 degrees. Then, a skewer (not shown), which is a jig that accurately indicates 90 degrees, is pressed against the rotor 9, and the scale of the magnetic scale 39 of the rotor 9 is read by the detector 33, and 90 degrees is displayed on the display 11. Confirm whether or not.
[0039]
If the display 11 is not 90 degrees, the stopper 37 adjusts the origin. That is, referring to FIG. 6, the stopper 37 has an adjustment screw portion 69, a taper portion 71, and a fixing screw 73. When the adjustment screw portion 69 is rotated, the stopper 37 moves in the left-right direction in FIG. The contact position of the rotor 9 with the stopper pin 35 changes. The stopper 37 may be an eccentric shaft.
[0040]
Thereby, since the origin position is adjusted, the 90 degree skewer is again pressed against the rotor 9 to confirm that the display becomes 90 degree. This operation is repeated until the display reaches 90 degrees. When the adjustment is completed, the fixing screw 73 is tightened to fix the stopper 37.
[0041]
When the calibration is completed in this way, the bending angle of the workpiece W is measured as follows. When the measurement is started, first, the fixing bolt 21 is loosened so that the rotation center axis 31 of the rotor 9 is in contact area R of the workpiece W (see FIG. 5C) so that the bending angle of the workpiece W can be properly measured. ) To adjust the measurement reference member 7 in the vertical direction.
[0042]
That is, when the rotation center axis 31 of the rotor 9 is not in the contact region R of the workpiece W, the rotor 9 follows the workpiece W even if the bent side W1 of the workpiece W is pressed against the rotor 9. Therefore, the measurement surface 9A of the rotor 9 does not come into contact with the other side W1 of the work W. For this reason, there are cases where accurate angle measurement cannot be performed.
[0043]
When performing the angle measurement, the operator M has the grip portion 5 of the bending angle measuring device 1 with one hand and the side W0 that serves as a reference for the workpiece W with the other hand (see FIG. 5A). ), The workpiece W is pressed against the rotor 9 (see FIG. 5B). As a result, the rotor 9 rotates and the workpiece W comes into contact with and comes into contact with the measurement surface 9A of the rotor 9 (FIG. 5C), so the detector 33 reads the scale on the magnetic scale 39 of the rotor 9. Then, the angle is obtained from the difference from the scale at 90 degrees registered in the calibration, and displayed on the display 11.
[0044]
When the bending angle of the workpiece W is measured in this way, the operator presses the HOLD button 49 (see FIG. 2), temporarily stores the angle signal in the RAM 59, and then presses the DATA button 51 to place the infrared signal on the angle signal. Is transmitted from the infrared light emitting LED 43 of the infrared unit 13. At this time, the operator can recognize that the angle signal has been transmitted reliably by hitting a red light beam on an infrared receiver 41 described later.
[0045]
7 to 9 show an infrared receiver 41 that receives a measurement signal transmitted from the infrared unit 13 of the bending angle measuring apparatus 1 described above.
[0046]
The infrared light receiver 41 includes a mounting stay 79 having a U-shaped cross section having a magnet 77 for mounting to an appropriate position of a press brake 75 as shown in FIG. 10, for example. A case 83 that can be fixed at a desired angle by an angle adjusting clamp 81 is attached.
[0047]
In the case 83, a light receiving sensor 85 for receiving infrared light emitted from the infrared light emitting LED 43 of the bending angle measuring device 1 is provided, and above the light receiving sensor 85 (lower side in FIG. 8). Are provided with eaves (light-shielding plates) 87 for blocking the light beam inserted into the light-receiving sensor 85. The light receiving sensor 85 is connected to the NC device 93 of the press brake 75 via a connector 89 and a cable 91 (see FIG. 10).
[0048]
In addition, since infrared rays have strong directivity, for example, as shown in FIGS. 11A and 11B, the range is about 130 degrees in the horizontal direction, about 45 degrees in the vertical direction, and about 3 m to 5 m. It is preferable to use at a distance.
[0049]
FIG. 12 shows a caliper 95 with an infrared unit, which is an example of a length measuring device with an infrared unit. In this caliper 95 with an infrared unit, a length measuring element 99 is provided so as to be movable with respect to the L-shaped main body 97. Length measurement is performed by pinching.
[0050]
An infrared unit 101 is attached to the main body 97. The infrared unit 101 has the same infrared light emitting LED 103, ON / OFF switch 105, ID switch 107 as those provided in the bending angle measuring apparatus 1 described above. , A HOLD switch 109, a DATA switch 111, a changeover switch 113, a display unit 115, and the like.
[0051]
The length measurement result is transmitted in the infrared from the above-described infrared light emitting LED 103, and this infrared light is also received by the above-described infrared receiver 41 and sent to the NC device 93 of the press brake 75.
[0052]
FIG. 13 shows the configuration of a bending system 117 according to the present invention.
The bending processing system 117 includes a press brake 75, an NC device 93 that NC-controls the press brake 75, a bending angle measuring device 1 that generates a bending angle signal to the NC device 93, and a length measured by the NC device 93. It consists of a caliper 95 with an infrared unit that emits a flange length and plate thickness.
[0053]
The NC device 93 has a CPU 119 as a central processing unit, and an input unit 121 such as a keyboard, a display unit 123, and an infrared receiver 41 are connected to the CPU 119. Further, the correction angle calculation unit 124 that calculates the correction angle β ′ from the target angle and the measurement angle measured by the bending angle measurement device 1, and the punch P of the press brake 75 based on the correction angle β ′ calculated by the correction angle calculation unit 124. Correction D value calculation unit 125 for calculating a correction D value for correcting a D value for controlling the relative distance between the die D and the back gauge abutting position for determining the flange length of the workpiece W to be bent A correction L value calculation unit 127 for correcting the L value, signal determination means 129 for determining whether the signal sent to the infrared receiver 41 is an angle signal or a length measurement signal, and a press brake 75 A machining command unit 131 that issues a command is connected.
[0054]
Next, based on FIGS. 14-16, the processing method using the above-mentioned bending angle measuring apparatus 1 and the caliper 95 with an infrared unit is demonstrated.
[0055]
First, in FIG. 14, data is input to the NC device 93 (step S1), and after NC starts, the workpiece W is set and the pedal 133 (see FIG. 10) is depressed to perform machining (step S2). When the operator measures the bending angle of the workpiece W bent by the bending angle measuring device 1 (step S3), the infrared light emitting LED 43 of the bending angle measuring device 1 is attached to the press brake 75. The DATA button 51 is pressed toward the light receiver 41 to send an angle signal and an ID signal (step S4).
[0056]
Alternatively, when the flange length of the bent workpiece W is measured with the caliper 95 with the infrared unit or the thickness of the workpiece W is measured (step S5), the infrared light emitting LED 103 of the caliper 95 with the infrared unit is used as the infrared ray. The DATA switch 111 is pressed toward the light receiver 41 to send a length measurement signal and an ID signal (step S6).
[0057]
When the NC device 93 receives the ID signal from the infrared receiver 41, the signal determination unit 129 checks the ID signal (step S7), and the ID signal matches the ID of the bending angle measuring device 1 registered in advance. Is subjected to a bending angle correction process (step SA), which will be described later. If the ID matches the ID of the caliper 95 with the infrared unit registered in advance, a correction process based on the flange length and plate thickness (step SB) described later is performed. If it does not match any ID, or if the number of digits of the detected angle is obviously wrong, etc., it stops and does not perform the subsequent processing (step SE).
[0058]
Referring to FIG. 15, in the bending angle correction process (step SA), a bending angle processing screen 135 is displayed on the display unit of the display unit 123 (see step SA1, FIG. 17), and the measurement angle and correction angle calculation unit 124 is displayed. The value of the correction angle β ′, which is the difference between the calculated measurement angle and the target angle, is displayed on the bending angle processing screen 135 (step SA2), and D value correction processing indicating the relative distance between the punch and the die is performed. Is determined (step SA3). Note that a measurement angle-correction angle table may be displayed on the bending angle processing screen 135.
[0059]
If it is determined in step SA3 that the D value needs to be corrected, the set button 137 or the all set button 139 is pressed (step SA4, see FIG. 17), and the correction angle β ′ is set (step SA5). That is, the set button 137 is pressed to set the correction angle β ′ in the current process and the correction D value calculation unit 125 calculates the correction D value, or the all set button 139 is pressed to set all of the same D values as in the current process. The correction angle β ′ is set in the process and the correction D value calculation unit 125 calculates the correction D value (step SA6). This calculated D value is used for the next bending process.
[0060]
Then, the bending angle processing screen 135 is deleted (step SA7), the process returns to step S2 (step SA8), and the processing is continued. If it is determined in step SA3 that correction of the D value is not required, the return button 141 is pressed (step SA9), the bending angle processing screen 135 is deleted (step SA7), and the process returns to step S2 (step SA8) Processing continues.
[0061]
On the other hand, when the ID code is determined in step S7 (see FIG. 14), the flange length, the L value based on the plate thickness (the back gauge abutment position for positioning the workpiece W during processing), and the D value correction process are selected. Then, a length measurement screen 143 is displayed on the display unit of the display means 123 (step SB1, see FIG. 18), and it is determined whether the length of the flange is measured or the thickness of the workpiece W is measured (step SB2). .
[0062]
When the flange length of the workpiece W is measured, a correction L value α ′ that is the difference between the target flange length calculated by the correction L value calculation unit 127 and the measurement flange length is displayed on the length measurement screen 143 ( Step SB3, see FIG. 18). Here, it is determined whether correction of the L value is necessary (step SB4). If correction of the L value is necessary, the set button 145 or the all set button 147 is pressed (step SB5), and the correction L value α 'Is set (step SB6).
[0063]
That is, the set button 145 is pressed to set the correction L value α ′ in the current process and the L value is calculated, or the all set button 147 is pressed to set the correction L value α ′ to all processes in the same setup. The L value is calculated by setting (step SB7). Thereafter, the length measurement screen 143 is deleted (step SB8), the process returns to step S2 (see FIG. 14) (step SB9), and the processing is continued.
[0064]
If it is determined in step SB4 that correction of the L value is not necessary, the return button 149 is pressed (step SB10), the length measurement screen 143 is deleted (step SB8), and step S2 (see FIG. 14) is performed. Returning (step SB9), the processing is continued.
[0065]
On the other hand, if it is determined in step SB2 that the thickness of the workpiece W is measured, the actual thickness measured by the caliper 95 with the infrared unit is displayed on the length measurement screen 143 of the display means 123 (step SB11). FIG. 18), it is determined whether or not the correction of the D value by the plate thickness is necessary (step SB12).
[0066]
When it is determined that the D value needs to be corrected by the plate thickness, the set button 151 is pressed (step SB13), the actual plate thickness is set (step SB14), and the D value is calculated (step SB15). . Thereafter, the length measurement screen 143 is deleted (step SB8), (step SB8), the process returns to step S2 (see FIG. 14) (step SB9), and the processing is continued.
[0067]
If it is determined in step SB12 that D value correction is not necessary, the return button 149 is pressed (step SB10), the length measurement screen 143 is deleted (step SB8), and step S2 (see FIG. 14). Returning to (step SB9), the processing is continued.
[0068]
Note that whether the length measurement signal sent by the caliper 95 with the infrared unit indicates the flange length or the thickness of the workpiece W can be distinguished by the ID as described above. It can also be determined by the number of digits of the long signal.
[0069]
From the above results, the measured angle, flange length, plate thickness, and the like are transmitted to the press brake 75 using infrared rays as a medium, so that the NC device 93 is emitted from another machine, unlike the conventionally used radio wave. It is possible to prevent malfunction or runaway of the machine that may occur due to noise, and to ensure work safety and processing accuracy. Moreover, since the radio wave law countermeasure is not required, the same machine can be used regardless of the frequency range regulated for each country.
[0070]
Moreover, since the signals from the bending angle measuring device 1 and the caliper 95 with the infrared unit are automatically taken into the NC device 93, the D value and the L value can be automatically corrected, so that the work efficiency can be improved. At the same time, the processing accuracy can be improved.
[0071]
In addition, since the light receiving sensor 85 of the infrared light receiver 41 is tiltable and can be attached to an arbitrary place of the press brake 75 by a magnet 77, infrared light with strong directivity can be accurately received.
[0072]
In the case of correcting the passing angle, in step S4 of FIG. 14 in the above-described embodiment, a passing angle button (not shown) is pushed, and a plurality of locations, for example, the vicinity of the left end, the center, the right end By measuring the angle in the vicinity of the unit and pressing the DATA button 51 and sending the angle signal one after another, the angle processing screen 135 displays the bending angle of each measurement location, so it is easy to check whether the angle is appropriate or not. This can be determined (see FIG. 19).
[0073]
In the above-described embodiment, the correction angle calculation unit 124 that calculates the correction angle and the correction D value calculation unit 125 that calculates the correction D value are provided separately, but the correction angle and the correction D value are calculated. A calculation unit may be provided.
[0074]
【The invention's effect】
In the bending system according to the first aspect of the present invention, since the bending angle of the workpiece bent by the bending angle measuring device is measured and transmitted to the infrared receiver attached to the bending machine by infrared rays, it is conventionally used. Unlike wireless, it is possible to prevent malfunction or runaway of a machine that may be caused by noise emitted from another machine, and to ensure work safety and machining accuracy. Moreover, since the radio wave law countermeasure is not required, the same machine can be used regardless of the frequency range regulated for each country. The correction angle calculation unit calculates the correction angle based on the preset target angle and the angle signal received by the infrared receiver, and the correction D value calculation unit calculates the correction D value. Since the D value in this machining is corrected, machining accuracy can be improved. In addition, the length measuring device with an infrared unit measures the flange length and actual plate thickness of the bent workpiece, and sends a length measurement signal to the infrared receiver attached to the bending machine using infrared as a medium. If the signal discriminating means discriminates whether it is a length measurement signal or an angle signal generated by a bending angle measuring device, and if it is discriminated as a length measurement signal, a correction L value calculation unit is sent. Since the correction L value for correcting the L value is calculated based on the flange length signal that has been generated, the processing accuracy of the flange length can be improved. .
[0075]
In the bending system according to the second aspect of the invention, the stay of the infrared ray receiver can be attached to an arbitrary place of the bending machine by a magnet, and an infrared sensor for receiving infrared rays emitted from a length measuring device with an infrared unit is provided. Since the holding case is pivotably attached to the stay in the up-down direction, it can accurately receive infrared light with high directivity. Moreover, since the eaves provided on the upper side of the infrared sensor blocks the direct sunlight coming from the outside, it can receive light normally. .
[Brief description of the drawings]
FIG. 1 is a front view showing a bending angle measuring apparatus according to the present invention.
FIG. 2 is a side view seen from the direction II in FIG.
FIG. 3 is a plan view seen from the direction III in FIG.
FIG. 4 is a block diagram showing an internal structure of the bending angle measuring device.
FIGS. 5A to 5C are process diagrams showing a bending angle measuring method according to the present invention. FIGS.
FIG. 6 is a cross-sectional view showing a stopper.
FIG. 7 is a front view showing an infrared receiver.
8 is a plan view seen from the direction VIII in FIG. 7. FIG.
9 is a side view seen from the IX direction in FIG. 7. FIG.
FIG. 10 is a perspective view showing a bending system according to the present invention.
11A is a plan view showing a suitable range in the horizontal direction for emitting infrared rays, and FIG. 11B is a side view showing a suitable range in the vertical direction.
FIG. 12 is a perspective view of a caliper with an infrared unit.
FIG. 13 is a block diagram showing a configuration of a bending system according to the present invention.
FIG. 14 is a flowchart showing a previous step of the bending method according to the present invention.
FIG. 15 is a flowchart showing a process of a bending angle correction process.
FIG. 16 is a flowchart showing a process of correction processing based on flange length and plate thickness.
FIG. 17 is a bending angle processing screen.
FIG. 18 is a length measurement screen.
FIG. 19 is a bending angle processing screen showing a street angle.
[Explanation of symbols]
1 Bending angle measuring device
7 Measurement reference member (first support member)
9 Rotor
13, 101 Infrared unit
33 Detector
39 Magnetic scale (scale)
41 Infrared receiver
75 Press brake (bending machine)
77 Magnet
79 stay
83 cases
85 Light receiving sensor
87 Eaves
95 Vernier caliper with infrared unit (length measuring instrument with infrared unit)
123 Display means
124 Correction angle calculation unit
125 correction D value calculation unit
127 Correction L Value Calculation Unit
129 Signal discrimination means
W Work
W0 side
W1 Other side

Claims (2)

A bending angle measuring device for measuring a bending angle of a workpiece bent by a bending machine and transmitting an angle signal measured to the bending machine using infrared rays as a medium; and a detachably attached to the bending machine and An infrared receiver that receives infrared rays from the bending angle measuring device, a correction angle calculation unit that calculates a correction angle from an angle signal received by the infrared receiver and a preset target angle, and the correction angle calculation unit A correction D value calculation unit for calculating a correction D value to correct the D value based on the correction angle calculated in step (b), and display means for displaying the angle signal and the correction angle calculated by the correction angle calculation unit. In the bending system provided, the flange length and the plate thickness of the bent workpiece can be measured, and the measurement signal is used as an infrared ray as a medium. A length measuring device with an infrared unit to be transmitted to the optical device, a signal determining means for determining whether a signal received by the infrared light receiver is an angle signal or a length measuring signal, and a length measuring device with the infrared unit And a correction L value calculation unit that corrects an L value that is a back gauge position for positioning a workpiece at the time of processing based on the flange length signal . A bending angle measuring device for measuring a bending angle of a workpiece bent by a bending machine and transmitting an angle signal measured to the bending machine using infrared rays as a medium; and a detachably attached to the bending machine and An infrared receiver that receives infrared rays from the bending angle measuring device, a correction angle calculation unit that calculates a correction angle from an angle signal received by the infrared receiver and a preset target angle, and the correction angle calculation unit A correction D value calculation unit for calculating a correction D value to correct the D value based on the correction angle calculated in step (b), and display means for displaying the angle signal and the correction angle calculated by the correction angle calculation unit. In the bending processing system, the infrared light receiver receives infrared light emitted from the bending angle measuring device and / or the length measuring device with the infrared unit. An optical sensor, a case for holding the light receiving sensor, a stay for rotatably supporting the case in the vertical direction, a magnet for attaching the stay to an arbitrary position of the bending machine, and an upper side of the light receiving sensor A bending system characterized by comprising an eaves provided on the board .

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