JP4252402B2 - Workpiece machining method and workpiece machining system - Google Patents

Description

  The present invention relates to a workpiece processing method and workpiece processing system for bending and forming a workpiece of a plate material, and in particular, according to the shape of the reference portion when bending the workpiece, a reference hole is provided in the workpiece, The present invention relates to a workpiece processing method and a workpiece processing system for bending the workpiece by using the reference hole instead of the reference portion.

  In a bending machine that forms a workpiece by bending a plate-shaped workpiece along a linear folding line by bringing a punch (upper die) and a die (lower die), which are long in a straight line in the left-right direction of the operator, close to each other, When positioning the workpiece for bending, the workpiece is positioned by abutting the workpiece reference provided on the opposite side of the operator across the punch and the die. Yes.

  The abutting work abutting surface on which the work can be abutted is formed in a flat shape, and is provided in parallel with the direction in which the punch and the die are long (the direction of the folding line). It has been.

    By the way, as shown in FIG. 12, when the plate-like workpiece 101 is bent by a linear folding line 101A, the positioning reference portion 101B of the workpiece 101 is formed obliquely with respect to the folding line 101A. If so, only the sharp tip of the workpiece 101 is in contact with the workpiece abutting surface 103A of the workpiece abutting 103, and the workpiece 101 and the workpiece abutting surface 103A are not in surface contact with each other. There is a problem that the workpiece 101 cannot be accurately positioned in the direction of rotation about the axis.

  FIG. 12 is a diagram showing a model when the plate-like workpiece 101 is bent, and the direction perpendicular to the paper surface of FIG. 12 is the thickness direction of the plate-like workpiece 101.

  As shown in FIG. 13, when the plate-like workpiece 105 is bent by a linear folding line 105A, the positioning reference portion 105B of the workpiece 105 is formed in a curved shape, that is, positioning is performed. If it is formed in a shape that is not suitable as the reference portion, as in the case shown in FIG. 12, only the tip of the workpiece 102 comes into contact with the workpiece abutting surface 103A of the workpiece abutting 103, and the positioning of the workpiece 105 is accurately performed. There is a problem that can not be.

  Further, as shown in FIGS. 12 and 13, when the shape of the positioning reference portion of the workpiece is formed, for example, as shown in FIG. 14, the bending line of the workpiece 101 is formed by, for example, a V groove 101F, The workpiece 101 is positioned so that the tip of the punch 107 and the V-groove 101F are aligned with each other while the punch 107 of the folding machine is gradually approaching the die (while descending), and the workpiece 101 is bent. A method of bending with a line can be employed.

  However, in the above method, since it is necessary to position the workpiece 101 while slowly lowering the punch 107 of the folding machine, there is a problem that it takes a long time to bend the workpiece 101 along the folding line. .

  Further, if the positioning reference portion 111B of the workpiece 111 is formed in parallel with the fold line 111A of the workpiece 111, the positioning reference portion 111B of the workpiece 111 is a surface relative to the workpiece abutting surface 103A of the workpiece abutting 103. Since it makes contact, it is easy to position the workpiece 111 for bending. However, as shown in FIG. 15, when the distance between the bending line 111A and the positioning reference portion 111B is long, the positioning reference portion 111B is When abutting against the workpiece abutting surface 103A, the workpiece 111 between the bending line 111A and the positioning reference portion 111B is bent by gravity.

  And there exists a problem that the workpiece | work 111 cannot be correctly positioned in the said bending machine for bending.

  The present invention has been made in view of the above problems, and in the case of forming a product by bending a plate-shaped workpiece, the shape of the positioning reference portion of the workpiece used for positioning the workpiece is determined by the positioning. An object of the present invention is to provide a workpiece machining method and a workpiece machining system capable of positioning and bending the workpiece at an accurate position even if the shape is not suitable for the purpose.

The present invention according to claim 1 is a workpiece processing method for forming a product by bending a plate-shaped workpiece using a punch and a die, and has a shape of a positioning reference portion serving as a reference for the bending portion of the workpiece. Accordingly, a reference hole processing step for processing the reference hole serving as a reference for the bent portion into the workpiece, a positioning step for positioning the bent portion with reference to the processed reference hole, and the positioned bent portion possess a bending step folding, the positioning step, the positioning pin is provided integrally with the abutment provided away from said die and said punch in the Y direction is a longitudinal direction, said reference hole It is a step of engaging and positioning the reference hole processed in the processing step, and the positioning is performed by inserting the positioning pin into the reference hole, Press the direction in which the A direction workpiece toward the abutment from the die, a workpiece machining method of performing contacting the outer peripheral surface of the positioning pin and the inner peripheral surface of the reference hole.

  According to a second aspect of the present invention, in the workpiece machining method according to the first aspect, the reference hole machining step is performed by comparing the shape pattern of the reference portion that has been stored in a database in advance with A workpiece that is a step of determining whether or not the shape of the reference portion serving as a reference is an appropriate shape for bending, and processing the reference hole at a position that does not affect the final product related to the workpiece according to the determination result. It is a processing method.

According to a third aspect of the present invention, there is provided a work processing system for forming a product by bending a plate-shaped workpiece using a punch and a die, and a graphic data input means for inputting graphic data relating to the shape of the product. Based on the inputted graphic data, product shape display means for displaying the shape of the product, and data relating to the reference hole when the reference hole serving as a reference for the bent portion of the workpiece is processed into the workpiece are input. Based on the reference hole data input means, the reference hole processing means for processing the reference hole on the workpiece in a state where the product is developed based on the input reference hole data, and the engaged reference hole. Bending the bending portion of the workpiece positioned by the positioning means capable of positioning the workpiece, the processed reference hole, and the positioning means. Ri bend have a means, the positioning means includes a abutment which is provided away from said die and said punch in the Y direction is a longitudinal direction, a positioning pin is provided integrally with this abutment The positioning hole is configured to engage the reference hole processed by the reference hole processing means with the positioning pin, and the positioning is performed on the reference hole. A pin is inserted, and the workpiece is pushed in the Y direction toward the abutment from the die so that the inner peripheral surface of the reference hole and the outer peripheral surface of the positioning pin are brought into contact with each other. It is a workpiece machining system.

According to a fourth aspect of the present invention, in the workpiece processing system for forming a product by bending a plate-shaped workpiece using a punch and a die, graphic data input for inputting workpiece graphic data relating to the shape of the product. Whether or not the shape of the reference portion serving as a reference for the bending portion of the workpiece according to the input graphic data is an appropriate shape for bending by comparing the shape with the shape pattern of the positioning reference portion that is stored in advance in a database. In accordance with the determination result, a reference hole processing means for processing a reference hole serving as a reference for the bent portion of the workpiece into a workpiece in a state where the product is unfolded, and the processed reference hole are engaged. The workpiece is positioned by the positioning means capable of positioning the workpiece, the machined reference hole, and the positioning means. Possess a folding unit folding the bottom portion, said positioning means, and abutment provided away from said die and said punch in the Y direction is a longitudinal direction, provided integrally on the abutment The positioning hole is configured to engage the reference hole processed by the reference hole processing means with the positioning pin, and the positioning is performed using the reference hole. The positioning pin is inserted into the Y-direction, and the workpiece is pushed in the direction from the die toward the abutment so that the inner peripheral surface of the reference hole and the outer peripheral surface of the positioning pin are brought into contact with each other. This is a workpiece machining system.

According to a fifth aspect of the present invention, in the workpiece processing system for forming a product by bending a plate-shaped workpiece using a punch and a die, graphic data input for inputting workpiece graphic data relating to the shape of the product is provided. Whether or not the shape of the reference portion serving as a reference for the bending portion of the workpiece according to the input graphic data is an appropriate shape for bending by comparing the shape with the shape pattern of the positioning reference portion that is stored in advance in a database. Discrimination result display means for discriminating and displaying the discrimination result, and a reference hole for inputting data related to the reference hole when processing the reference hole serving as a reference for the bent portion of the workpiece into a workpiece in a state where the product is unfolded Data input means; reference hole processing means for processing the reference hole into the workpiece based on the input reference hole data; and Engages the engineering criteria holes possess a folding unit folding the positioning means of the universal positioning the workpiece, the bending portion of the workpiece is positioned by the above processed reference hole and said positioning means, The positioning means is configured to include an abutment provided away from the punch and the die in the Y direction which is the front-rear direction, and a positioning pin provided integrally with the abutment, The positioning pin is configured to engage the reference hole machined by the reference hole machining means for positioning, and the positioning is performed by inserting the positioning pin into the reference hole, and the Y direction. The workpiece is pushed in a direction from the die toward the abutment, and the inner peripheral surface of the reference hole and the outer peripheral surface of the positioning pin are brought into contact with each other. A work processing system that is configured to.

  According to the present invention, when a product is formed by bending a plate-shaped workpiece, the shape of the positioning reference portion of the workpiece used for positioning the workpiece is a shape that is not suitable for the positioning. Also, there is an effect that the workpiece can be positioned at an accurate position and bent.

[First Embodiment]
FIG. 1 and FIG. 2 are diagrams showing a schematic configuration of a workpiece machining system 1 according to the first embodiment of the present invention.

  The workpiece machining system 1 includes a control device equipped with an NC device, and includes a folding machine 3 that can bend a plate-shaped workpiece and a control device equipped with an NC device, and punches a plate-shaped workpiece. And a drilling machine (for example, a laser processing machine, a punching machine) 5 capable of performing the above.

  Data can be transmitted / received (transferred) between the bending machine 3 and the drilling machine 5 via the network 7, the host controller 9, and the network 11. Note that the host control device 11 may be deleted and the bending machine 3 and the drilling machine 5 may be connected to each other via a network so that data can be transmitted and received (transferred).

  Further, the workpiece 101 drilled by the drilling machine 5 is sent to the bending machine 3 and bent.

  Here, as shown in FIG. 2, the bending machine 3 includes a CPU 3A that controls the entire bending machine 3, and a ROM 3B that stores a control program for the bending machine 3, and the RAM 3C is the CPU 3A. This memory is capable of temporarily storing the result of the calculation.

  An LCD (Liquid Crystal Display) 3D is a display device for displaying information related to the bending machine 3, and a keyboard / touch panel 3E is an input device for inputting data to the bending machine 3, and a sensor. 3F is a sensor provided in the bending machine 3, and is, for example, a limit switch that can detect that the punch of the bending machine 3 is positioned at the rising end.

  The actuator 3G is a servo motor for positioning and driving a workpiece abutting provided in the bending machine 3, a hydraulic cylinder for moving the punch up and down, and the like. Note that the shape pattern memory 3H is not provided in the first embodiment.

  2, the drilling machine 5 includes a CPU 5A that controls the entire drilling machine 5 and a ROM 5B that stores a control program for the drilling machine 5, and the RAM 5C includes the CPU 5A. This is a memory that can temporarily store calculation results.

  The LCD 5D is a display device for displaying information related to the drilling machine 5, the keyboard / touch panel 5E is an input device for inputting data to the drilling machine 5, and the sensor 5F is a drilling machine. 5 is a limit switch that can detect, for example, that the punch of the drilling machine 5 is located at the rising end.

  The actuator 5G is a servo motor for positioning and driving a workpiece abutting provided in the drilling machine 5, a hydraulic cylinder for moving the punch up and down, and the like.

  Next, the abutment 13 for positioning the work when the work is bent by the bending machine 3 will be described.

  3 is a plan view showing a schematic configuration of the abutment 13, FIG. 4 is a side view showing the schematic configuration of the abutment 13, and FIG. 5 is a perspective view showing the schematic configuration of the abutment 13. .

  The abutting 13 includes a rectangular parallelepiped workpiece abutting 13A and a rectangular parallelepiped workpiece abutting 13C, and one end surface of the workpiece abutting 13A on the punch and die side forms a planar workpiece abutting surface 13B. One end surface of the workpiece abutting 13C on the punch and die side forms a planar workpiece abutting surface 13D.

  The workpiece abutting surface 13B and the workpiece abutting surface 13D are a punch 107 (upper die) or a die that is provided in a straight line in the horizontal horizontal direction (X direction in FIG. 3) as viewed from the operator. 109 (lower mold) is provided substantially parallel to the installation direction, that is, along the X direction.

  Further, the workpiece abutments 13A and 13C are moved in the X direction relative to the main body of the workpiece bending machine 3 by an actuator or a guide member, and the Y direction which is a horizontal direction perpendicular to the X direction (operator front-rear direction). And, it is configured to be movable in the Z direction which is the vertical direction.

  That is, each workpiece abutment 13A, 13C is movable and positionable in order to position the workpiece according to the bending position of the workpiece and the position of the positioning reference portion of the workpiece when the workpiece is bent. Yes.

  For example, when the positioning reference portion of the workpiece is constituted by the end surface of the workpiece, the bending line of the workpiece and the end surface are parallel to each other, and the distance between the end surface and the bending line is “L”. Each of the workpiece abutting surfaces 13B and 13D is positioned at a position separated from the center of the punch (upper die) or die (lower die) by a distance of approximately “L”.

  A positioning pin 15A extending in the Z upward direction is provided integrally with the workpiece abutting 13A on the upper surface of the workpiece abutting 13A. A positioning pin 15B extending in the direction is provided integrally with the workpiece abutting 13C. For example, the distance between the workpiece abutting surface 13B of the workpiece abutting 13A and the positioning pin 15A, and the distance between the workpiece abutting surface 13D of the workpiece abutting 13C and the positioning pin 15B. Is almost the same.

  Each of the positioning pins 15A and 15B is a case where the workpiece 101 is bent at the folding line 101A, and the shape of the positioning reference portion 101B of the workpiece 101 is not parallel to the bending line 101A. When it is difficult to position the workpiece 101 by abutting the workpiece abutting surfaces 13B and 13D, the workpiece 101 is positioned instead of the workpiece abutting surfaces 13B and 13D.

  When positioning the workpiece 101 using the positioning pins 15A and 15B, the workpiece 101 is provided with reference holes (through holes) 101C and 101D that can be engaged with the positioning pins 15A and 15B. The upper surface of each workpiece abutment 13A, 13C (the surface on which each positioning pin 15A, 15B is provided) moves slightly downward from the lower surface of the workpiece 101. It is positioned.

  Further, the inner peripheral surface of each reference hole 101C, 101D on the folding line 101A side and the outer peripheral surface of each positioning pin 15A, 15B (the outer peripheral surface on each workpiece abutting surface 13B, 13D side) contact each other, That is, the operator places the workpiece 101 on the die 109 and the workpiece abutments 13A and 13C, inserts the reference holes 101C and 101D of the workpiece 101 into the positioning pins 15A and 15B, The workpiece 101 is positioned by pushing the workpiece 101 from the die 109 toward the abutment 13 in the Y direction.

  Subsequently, when the punch 107 is lowered (moved downward in the Z direction) and the positioned workpiece 101 is bent and molded, the workpiece 101 is bent at the folding line 101A to produce a product.

  In addition, after the bending, when the shape of the final product of the workpiece requires the through hole 101E shown in FIG. 3 (the through hole having a shape that wraps the outer shape of each of the reference holes 101C and 101D), the workpiece 101 has the through If the hole 101E is processed, the reference holes 101C and 101D do not exist, and the finished state of the final product can be kept good. That is, the finished shape of the final product can be the original shape of the final product. Further, when the through hole 101E is not necessary, the reference holes 101C and 101D are provided at locations that do not adversely affect the final product (for example, locations that are difficult to see in appearance, and rigidity and strength of the final product are maintained. It is desirable to provide at the location.

  In the above embodiment, the number of workpiece abutments is two, the number of positioning pins is two, and the number of reference holes provided in the workpiece 101 is two. However, depending on the shape of the workpiece, etc. The number of the workpiece abutment, the positioning pins, and the reference holes may be one or more appropriate numbers.

  In addition, it is not necessary to position one workpiece by engaging one reference hole with one positioning pin, and a plurality of positioning pins are formed long in the direction extending to the punch 107 and the die 109. The workpiece may be positioned by engaging two reference holes. That is, the shape of the reference hole is formed long in the X direction, for example, as in the through hole 101E shown in FIG. 3, and the workpiece is positioned by engaging one through hole 101E and the two positioning pins 15A and 15B. May be.

  Further, as a result of not adversely affecting the final product of the workpiece, for example, the distance between the folding line 101A and the reference hole 101C and the distance between the folding line 101A and the reference hole 101D are different from each other. Accordingly, the workpiece abutment 13A and the workpiece abutment 13C are set so that the distance between the positioning pin 15A and the die 109 and the distance between the positioning pin 15B and the die 109 are different from each other. It shall be positioned.

  Next, the operation of the workpiece machining system 1 will be described.

  FIG. 6 is a flowchart showing the operation of the workpiece machining system 1.

  First, the folding machine 3 inputs graphic data relating to the shape of the product (work) from the host controller 9 or other graphic data input means (not shown) such as a CD-ROM or FD (not shown) via the network 7. (Acquire) (S1), and based on the input graphic data, the shape of the product is displayed on an LCD 3D (see FIG. 2) as an example of product shape display means as shown in FIG.

  FIG. 7 shows a development view before the product is folded and a perspective view after the product is folded. However, if the operator can grasp the shape of the product, the development view and the perspective view are shown. Instead of or in addition, a drawing (for example, a cross-sectional view) other than the developed view and the perspective view may be displayed.

  Subsequently, when the operator looks at the shape of the displayed product and folds the product at the fold line, can the planar work abutting surfaces 13B and 13D shown in FIGS. 3 to 5 be used? The operator determines whether or not (S3).

  As a result of the determination, the shape of the positioning reference portion when bending the workpiece related to the product is an appropriate shape for positioning the workpiece when bending the workpiece, for example, parallel to the bending line. In this case, the positioning reference portion is abutted against the workpiece abutting surfaces 13B and 13D, and the workpiece is subjected to a normal bending process (S5).

  In addition, as a result of the determination, for example, the shape of the positioning reference portion when bending the workpiece according to the product is provided to be inclined with respect to the bending line of the workpiece as shown in FIGS. If the shape of the positioning reference portion is not an appropriate shape for positioning the workpiece when the workpiece is bent, such as the shape of the positioning reference portion is a curve, As shown in FIG. 8, the LCD 3D displays a screen for inputting the positions of the reference holes 101C and 101D that are used for positioning for the bending and are processed into the workpiece 101. .

  Subsequently, on the basis of the displayed screen, the data (reference data) regarding the reference holes 101C and 101D when the reference holes 101C and 101D serving as the reference of the bent portion of the workpiece 101 are processed into the workpiece 101. The data related to the reference hole when processing the hole into the workpiece with the product developed, for example, data related to the processing position and shape of the reference hole) is displayed at the lower right of the screen displayed in FIG. An operator inputs data to the folding machine 3 using a provided numeric keypad 17 (an example of a numeric keypad formed on a touch panel formed on the LCD 3D), which is an example of reference hole data input means (S7).

  In addition, as the data regarding the input reference holes 101C and 101D, as described above, the distance “L1” from the bending line 101A of the workpiece 101 to the reference holes 101C and 101D and the reference holes 101C and 101D. Although the distance “L2” can be raised, the size of each of the reference holes 101C and 101D may be input. In addition to these, data that can specify the shape and position of the reference hole may be input.

  Subsequently, the input data regarding the reference holes 101C and 101D is transferred via the network 7, the host controller 11 and the network 11 shown in FIG. 2, and provided (transferred) to the drilling machine 5. (S9).

  Based on the provided data, the drilling machine 5, which is an example of the reference hole processing means, processes the reference holes 101C and 101D on the workpiece 101 in a state where the product is developed (S11). In addition, when processing each of the reference holes 101C and 101D, an outer shape (for example, a positioning reference portion 101B) of the workpiece 101 in a state where the product is developed may be formed.

  The workpiece 101 in which the respective reference holes 101C and 101D are processed is conveyed from the drilling machine 5 to the bending device 3 and supplied.

  Subsequently, the work 101 supplied to the bending machine 3 which is an example of a bending means is positioned and installed on the bending machine 3 in order to bend at the position of the bending line 101A. In this positioning installation, as described above, the reference holes 101C and 101D processed by the drilling machine 5 are engaged with the positioning pins 15A and 15B provided in the abutment 13 of the bending machine 3, respectively. Is done by doing.

  Prior to the positioning of the workpiece, the workpiece abutments 13A and 13C and positioning pins 15A and 15B, which are examples of positioning means, are preliminarily set based on the data input with the numeric keypad 17 on the screen shown in FIG. It shall be positioned.

  Subsequently, the punch 107 shown in FIG. 4 is moved relatively close to the die 109 (for example, the punch 107 is lowered), and the workpiece 101 that has been positioned and set is pressed by the punch 107 and the die 109. Then, the bending portion of the workpiece 101 (the portion indicated by the bending line 101A) is bent (S13).

  Thereafter, the workpiece (product) subjected to the bending process is carried out of the bending machine 3.

  In addition, conveyance and supply of the workpiece 101 from the drilling machine 5 to the folding machine 3, positioning of the workpiece 101 in the folding machine 3, and carrying out the product after the folding process from the folding machine 3, It may be performed automatically using a transfer device (not shown) or manually by the operator.

  In the above description of the operation, the workpiece 101 has been mainly described. However, the workpiece machining system 1 is substantially the same for the workpiece 105 shown in FIG. 13 and other workpieces in which the shape of the positioning reference portion when bending is inappropriate. To work.

  In the above embodiment, data relating to each of the reference holes 101C and 101D shown in FIG. 8 is transferred via the network 7, the host controller 11 and the network 11, and is transferred from the folding machine 3 to the drilling machine 5. If the folding machine 3 and the drilling machine 5 are directly connected to each other via a network without going through the host controller 11, the folding machine 3 and the drilling machine 5 are directly connected to each other. It is assumed that data regarding each of the reference holes 101C and 101D is provided from the folding machine 3 to the drilling machine 5 through the network.

  As described above, if data regarding each of the reference holes 101C and 101D is provided from the bending machine 3 to the drilling machine 5 via the network, the data can be provided quickly without error, and the workpiece 101 can be processed accurately and accurately. Can be done quickly.

  When the bending machine 3 and the drilling machine 5 are not connected via a network or the like, the reference holes 101C described above are used by using a recording medium such as a floppy disk or a CD-ROM or a drawing recorded on paper. , 101D may be provided to the drilling machine 5 or the operator of the drilling machine 5.

  According to the workpiece processing system 1, when a plate-shaped workpiece is bent to form a product, a reference hole serving as a reference for the bending portion is formed according to the shape of the positioning reference portion serving as a reference for the bending portion of the workpiece. The processed reference hole is engaged with a positioning pin provided in the work abutment to position the bent portion of the workpiece, and the bent portion of the positioned workpiece is bent. Even if the shape of the positioning reference part of the workpiece used for positioning the workpiece is a shape that is not suitable for the positioning (inappropriate shape), the workpiece can be quickly positioned accurately and accurately. Can be bent.

  Further, as shown in FIG. 15, even if the positioning reference portion serving as a positioning reference at the time of bending is a plane, and the bending line of the workpiece related to the bending and the positioning reference portion are parallel to each other, as shown in FIG. When the distance between the fold line and the positioning reference portion is large, the workpiece is bent by gravity, and the fold line cannot be accurately positioned at the position of the punch 107 or the die 109. If the workpiece is positioned for folding using a reference hole provided in the vicinity of the folding line instead of the part, the folding line of the workpiece can be accurately positioned at the position of the punch 107 or the die 109. And the workpiece can be accurately bent at the folding line.

  In addition, when the control device of the bending device 3 does not have a function of inputting the distance dimension between the bending line of the workpiece and the reference hole, as shown in FIG. Instead of inputting the distance dimension to the reference hole, the distance dimension LA between the bending line and the workpiece abutting surfaces 13B, 13D of the workpiece abutting 13A, 13C is inputted, and the inputted distance dimension is inputted. When the LA is provided to the drilling machine 5, for example, the host controller 11 has the workpiece abutting surfaces 13B and 13D of the workpiece abutting surfaces 13A and 13C and the positioning pins 15A and 15B at the distance dimension LA. The distance Lb between them is added to calculate the dimension L1 between the bending line and the reference hole in the workpiece, and this calculated dimension L1 is provided to the drilling machine 5 Alternatively, the distance dimension LA is provided to the drilling machine 5, and the workpiece abutting surfaces 13B and 13D and the positioning pins of the workpiece abutments 13A and 13C are provided to the distance dimension LA provided by the drilling machine 5. The distance dimension LB between 15A and 15B may be added to calculate the dimension L1 between the folding line and the reference hole in the workpiece.

  The dimension L1 is a distance dimension between the fold line of the workpiece and the peripheral edge on the fold line side of the reference hole processed into the workpiece.

  By inputting the position of the reference hole to the folding machine 3 as described above, the reference hole can be easily processed without changing the control program of the folding machine 3.

[Second Embodiment]
The workpiece machining system according to the second embodiment includes a shape pattern memory 3H provided in the folding machine 3 of the workpiece machining system 1 according to the first embodiment, as shown in FIG. Unlike the workpiece machining system 1 according to the first embodiment, the memory contents of the ROM 3B that stores the control program when the folding machine 3 operates using the pattern memory 3H are different. The points are configured in substantially the same manner as the workpiece machining system 1.

  FIG. 10 is a diagram showing an example of the shape pattern of the positioning reference portion of the workpiece stored in the database in advance in the shape pattern memory 3H.

  In the shape pattern P1, a positioning reference portion P12 for positioning the workpiece when the workpiece is bent at a folding line P11 is formed obliquely with respect to the folding line P11 of the workpiece.

  In the shape pattern P3, a positioning reference portion P32 for positioning the workpiece when the workpiece is bent along a folding line P31 is formed in an arc shape.

  In the shape pattern P5, a positioning reference portion P52 for positioning the workpiece when the workpiece is bent along a folding line P51 is formed with a step.

  Each of the shape patterns P1, P3, and P5 is an example that is not suitable as the shape of the positioning reference portion of the workpiece when the workpiece is bent, and a shape pattern other than the above patterns (for example, a curve as shown in FIG. 13). Shape pattern) may be stored in the shape pattern memory 3H.

  Next, the operation of the workpiece machining system according to the second embodiment will be described. In the description of the operation, only parts different from the operation of the workpiece machining system 1 according to the first embodiment will be described with reference to FIG.

  In the workpiece machining system according to the second embodiment, in step S3, the shape of the positioning reference portion of the graphic data related to the shape of the product input in step S1 is stored in the shape pattern memory 3H in advance as a database. By comparing with the shape pattern of the reference portion, it is determined whether or not the shape of the reference portion serving as a reference for the bending portion of the workpiece according to the input graphic data is an appropriate shape for bending, that is, the product is bent. When bending at the line, it is determined whether or not the planar workpiece abutting surfaces 13B and 13D shown in FIGS. 3 to 5 can be used.

  Then, according to the determination result, in step S7, data relating to a reference hole serving as a reference for the bent portion of the workpiece (data relating to the reference hole when the reference hole is processed into a workpiece in a state where the product is developed) For example, the data regarding the processing position and shape of the reference hole) is automatically calculated according to the shape of the bent portion of the workpiece, and the calculated data regarding the reference hole is provided to the drilling machine 5 in step S9. (Forward.

  In step 7, when calculating (determining) the machining position of the reference hole, a default value may be used instead of automatically calculating (determining) according to the shape of the bent part of the workpiece. Further, for example, the distance between the shape of the reference hole and the bending position is determined as a default value, and the dimension between the reference holes is set to the width of the workpiece (the dimension of the workpiece in the folding line direction). It may be calculated accordingly.

  In this way, it is automatically determined whether or not the shape of the reference portion serving as a reference for the bending position of the workpiece according to the input graphic data is an appropriate shape for bending, and the bending of the workpiece is performed according to the determination result. By automatically calculating the data on the reference hole serving as the reference for the location according to the shape of the bent part of the workpiece, the work load on the operator can be reduced and the reference hole is processed accurately and quickly. be able to.

  Further, in step S3, after automatically determining whether or not the shape of the reference portion serving as a reference for the bending portion of the workpiece according to the input graphic data is an appropriate shape for bending, this determination result is displayed as a determination result. Displayed on the LCD 3D as an example of the means, and based on this display, in step S7, data relating to a reference hole serving as a reference for the bent portion of the workpiece (when the reference hole is processed into a workpiece in a state where the product is developed) The operator may input data relating to the reference hole, for example, data relating to the processing position and shape of the reference hole.

  In this way, if the operator inputs data relating to the reference hole, the reference hole can be placed where it does not adversely affect the product.

  Note that the determination in step S3 is not only the shape pattern shown in FIG. 10 but also a shape pattern obtained by combining the shape patterns shown in FIG. 10 as shown in FIG. 11, and the folding lines P71, P91, and P111 are used. The provided shape patterns P7, P9, and P11 may be used.

  When determining in step S3, the shape pattern shown in FIG. 11 may be generated by combining the shape patterns shown in FIG. 10, or the shape pattern shown in FIG. It may be stored in the pattern memory 3H.

  According to the workpiece machining system according to the second embodiment, in addition to the effects of the workpiece machining system 1, the operator's work burden when determining whether or not the reference hole needs to be machined is reduced. In addition, the shape pattern of the product in which the reference holes are processed can be grouped together such that they are similar to each other, so that the product can be made uniform.

It is a figure showing a schematic structure of a work processing system concerning a 1st embodiment of the present invention. It is a figure showing a schematic structure of a work processing system concerning a 1st embodiment of the present invention. It is a top view which shows schematic structure of abutment. It is a side view which shows schematic structure of abutment. It is a perspective view which shows schematic structure of abutment. It is a flowchart which shows operation | movement of a workpiece | work processing system. It is a figure which shows the state which displayed the shape of the said product on LCD based on the graphic data of the product which the bending machine 3 input. FIG. 4 is a diagram showing a screen for inputting the position of each reference hole used when positioning a workpiece for bending, which is displayed on the LCD of the bending machine 3; If the control device of the folding device does not have a function for inputting the distance dimension between the workpiece folding line and the reference hole, the distance dimension between the workpiece folding line and the reference hole is indirectly set. It is a figure which shows the method of inputting. It is a figure which shows the example of the shape pattern of the positioning reference | standard part of the workpiece | work previously stored in the shape pattern memory as a database. It is a figure which shows the shape pattern which combined the shape pattern shown in FIG. It is a figure which shows the model in the case of bending a plate-shaped workpiece | work. It is a figure which shows the model in the case of bending a plate-shaped workpiece | work. It is a figure which shows the model in the case of forming the bending line of a workpiece | work by V groove | channel, positioning the said workpiece | work, and bend | folding at a folding line. When the distance between the bending line of a workpiece | work and the positioning reference | standard reference part is long, it is a figure which shows the model in the case of positioning the said workpiece | work and bending at the said folding line.

Explanation of symbols

1 Work processing system 3 Bending machine 3D LCD
3E Keyboard / touch panel 3H Shape pattern memory 5 Drilling machine 7, 11 Network 9 Host controller 13 Abutting 13A, 13C Work abutting 13B, 13D Work abutting surface 15A, 15B Positioning pins 101, 105 Work 101A Bending line 101C, 101D Reference hole 107 Punch 109 Die

Claims (5)

In a workpiece processing method for forming a product by bending a plate-shaped workpiece using a punch and a die ,
A reference hole machining step for machining a reference hole serving as a reference for the bent portion into the workpiece according to the shape of the positioning reference portion serving as a reference for the bent portion of the workpiece;
A positioning step of positioning the bent portion with reference to the processed reference hole;
A folding step of folding the positioned folding portion;
I have a,
In the positioning step, the reference hole machined in the reference hole machining step is provided on a positioning pin provided integrally with an abutment provided apart from the punch and the die in the Y direction which is the front-rear direction. Positioning is performed by inserting the positioning pin into the reference hole, and pressing the workpiece in the Y direction in the direction from the die toward the abutment. A work machining method, wherein the work is performed by bringing an inner peripheral surface of a hole into contact with an outer peripheral surface of the positioning pin . In the workpiece processing method according to claim 1,
In the reference hole machining step, it is determined whether or not the shape of the reference portion serving as a reference for the bending portion of the workpiece is an appropriate shape for bending by comparing with the shape pattern of the reference portion that is stored in a database in advance. According to a determination result, the workpiece machining method is a step of machining the reference hole at a position that does not affect the final product related to the workpiece. In a workpiece processing system that forms a product by bending a plate-shaped workpiece using a punch and die ,
Graphic data input means for inputting graphic data relating to the shape of the product;
Product shape display means for displaying the shape of the product based on the inputted graphic data;
A reference hole data input means for inputting data relating to the reference hole when processing a reference hole serving as a reference for the bending portion of the workpiece into the workpiece;
A reference hole processing means for processing the reference hole in a work in a state where the product is developed based on the input reference hole data;
Positioning means for freely positioning the workpiece by engaging with the machined reference hole;
Bending means for bending the bending portion of the workpiece positioned by the processed reference hole and the positioning means;
I have a,
The positioning means is configured to include an abutment provided away from the punch and the die in the Y direction which is the front-rear direction, and a positioning pin provided integrally with the abutment, The positioning pin is configured to engage the reference hole machined by the reference hole machining means for positioning, and the positioning is performed by inserting the positioning pin into the reference hole, and the Y direction. The workpiece is configured such that the workpiece is pushed in a direction from the die toward the abutment and the inner circumferential surface of the reference hole and the outer circumferential surface of the positioning pin are brought into contact with each other. Processing system. In a workpiece processing system that forms a product by bending a plate-shaped workpiece using a punch and die ,
Graphic data input means for inputting graphic data of a workpiece related to the shape of the product;
By comparing with the shape pattern of the positioning reference portion that has been databased in advance, it is determined whether or not the shape of the reference portion serving as a reference for the bending position of the workpiece according to the input graphic data is an appropriate shape for bending, A reference hole machining means for machining a reference hole serving as a reference for the bent portion of the workpiece into a workpiece in a state where the product is developed according to the determination result;
Positioning means for freely positioning the workpiece by engaging with the machined reference hole;
Bending means for bending the bending portion of the workpiece positioned by the processed reference hole and the positioning means;
I have a,
The positioning means is configured to include an abutment provided away from the punch and the die in the Y direction which is the front-rear direction, and a positioning pin provided integrally with the abutment, The positioning pin is configured to engage the reference hole machined by the reference hole machining means for positioning, and the positioning is performed by inserting the positioning pin into the reference hole, and the Y direction. The workpiece is configured such that the workpiece is pushed in a direction from the die toward the abutment and the inner circumferential surface of the reference hole and the outer circumferential surface of the positioning pin are brought into contact with each other. Processing system. In a workpiece processing system that forms a product by bending a plate-shaped workpiece using a punch and die ,
Graphic data input means for inputting graphic data of a workpiece related to the shape of the product;
By comparing with the shape pattern of the positioning reference portion that has been databased in advance, it is determined whether or not the shape of the reference portion serving as a reference for the bending position of the workpiece according to the input graphic data is an appropriate shape for bending, A discrimination result display means for displaying the discrimination result;
A reference hole data input means for inputting data relating to the reference hole when processing the reference hole serving as a reference for the bent portion of the work into a work in a state where the product is developed;
Reference hole machining means for machining the reference hole into the workpiece based on the inputted reference hole data;
Positioning means for freely positioning the workpiece by engaging with the machined reference hole;
Bending means for bending the bending portion of the workpiece positioned by the processed reference hole and the positioning means;
I have a,
The positioning means is configured to include an abutment provided away from the punch and the die in the Y direction which is the front-rear direction, and a positioning pin provided integrally with the abutment, The positioning pin is configured to engage the reference hole machined by the reference hole machining means for positioning, and the positioning is performed by inserting the positioning pin into the reference hole, and the Y direction. The workpiece is configured such that the workpiece is pushed in a direction from the die toward the abutment and the inner circumferential surface of the reference hole and the outer circumferential surface of the positioning pin are brought into contact with each other. Processing system.

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