JP2005177785A - Control system and control method for bending machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform bending as far as the bending is performable with a special-purpose bending machine for bending a product, in a process for bending products having similar shapes. <P>SOLUTION: A control system 1 for a bending machine refers to product-shape information obtained, generates automatic operation data 17a for controlling the bending action of a bending machine 23 so that a product is formed into a desired shape, and controls the bending machine 23. The system is provided with a means 15 for detecting a case that the automatic operation data 17a for forming a product into a desired shape are not generated, and a means 13 for determining a range where the bending of products is performable and for generating automatic operation data 17b of semi-products for performing the bending within the performable range. Thereby, the bending machine 23 is controlled so that the product is bent to the range where the bending is performable, based on the automatic operation data 17b of the semi-products. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a control system and method for a bending machine, and more particularly, a bending process for controlling a dedicated bending machine for bending a product in a bending process of the product so that the bending is performed to a possible level. The present invention relates to a machine control system and method.

  Conventionally, for example, a control device of a dedicated bending machine (panel vendor or the like) acquires product shape information in order to generate automatic operation data. And the said control apparatus produces | generates automatic operation data with reference to the information of a product shape.

  However, during automatic operation data generation, products that cannot be processed to the final shape will result in a program error. For this reason, product processing (bending) by a dedicated bending machine is not performed from the beginning, but is performed by a general-purpose bending machine or the like.

Patent Document 1.
Japanese Patent Laid-Open No. 2001-137953

  Such a conventional method has the following problems. In other words, a dedicated bending machine (panel vendor or the like) is a processing machine dedicated to processing the same or similar product, and thus has high productivity. On the other hand, there is a problem that there are many restrictions on the processing shape and there are few types of products that can be processed.

  Further, when a user manually creates a program from a product drawing, there is a problem that a program error is likely to occur and product processing productivity is lowered.

  And about the product containing the part which cannot be processed, since it processed from the beginning with a general purpose bending machine, there existed a problem that production efficiency was bad.

The present invention has been made in view of the above-described problems, and the invention according to claim 1 refers to the information on the acquired product shape and performs the processing operation of the bending machine for making the product into a desired shape. Means for detecting when it is impossible to generate automatic operation data for generating a desired shape in a control system for a bending machine that generates automatic operation data to be controlled and controls the bending machine;
Means for determining a workable range of the product and generating automatic operation data of the semi-finished product for performing the machining within the workable range, and a range in which the product can be processed by the automatic operation data of the semi-finished product It is a control system of the bending machine which controls the bending machine so as to process up to.

  The invention according to claim 2 is a control system for a bending machine according to claim 1, further comprising means for generating automatic operation data for performing a bending process within a range in which a process range is set in advance.

  The invention according to claim 3 is provided with means for generating automatic operation data of the general-purpose bending machine in order to perform the remaining processing for making the desired product with the general-purpose bending machine. Is a control system for a bending machine.

  The invention according to claim 4 refers to the acquired product shape information, generates automatic operation data for controlling the processing operation of the bending machine for making the product into a desired shape, and controls the bending machine. In the method of controlling a bending machine, the step of detecting a case where automatic operation data for making a product into a desired shape cannot be generated, and determining the workable range of the product, A bending process for controlling the bending machine so as to process the product to a processable range based on the automatic operation data of the semi-finished product. This is the control method of the machine.

  As described above, according to the present invention, product shape information is input by a dedicated bending machine (panel vendor or the like) as usual. And even if it cannot bend to the final shape, the dedicated bending machine performs bending within the processable range.

  Subsequently, in the state of a semi-finished product, it is unloaded from a dedicated bending machine, and then the remaining bending is performed with a general-purpose bending machine (such as a bending robot).

  Thereby, it is avoided that a user performs all the bending contained in a product manually using a general-purpose bending machine, and there is an effect that the burden on the operator is reduced. In addition, the productivity of the product is improved. On the other hand, since the user can set the machining range in advance, there is an effect that the setup of work becomes easy.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 schematically shows a control system 1 for a bending machine. The bending machine in this example assumes a dedicated bending machine (panel bender etc.). That is, it is a dedicated bending machine for processing a large amount and only the same or similar product.

  The bending machine control system 1 causes the display 5 to display a main control unit 3 that generates automatic operation data, a display 5, a keyboard / mouse 7, and a screen for inputting product shape information. A product shape input unit 9 and a product shape setting unit 11 for displaying a screen for the user to set a processing range of the product on the display 5 are provided.

  The main control unit 3 includes an automatic operation data generation unit 13, an error detection unit 15, and an automatic operation data storage memory 17. The automatic operation data generation unit 13 includes an error handling unit 19 and a setting handling unit 21.

  The automatic operation data generation unit 13 refers to the acquired product shape information and generates automatic operation data for controlling the dedicated bending machine 23. The error detection unit 15 detects a program error when there is a part that cannot be processed in the product during generation of automatic operation data.

  When the error detection unit 15 detects a program error, the error handling unit 19 determines a processable range of the product and generates automatic operation data of the semi-finished product within this range. The setting handling unit 21 creates automatic operation data in the machining range set by the user.

  The automatic operation data storage memory 17 is a product automatic operation data memory 17a for storing automatic operation data for processing a desired product to the end, and an automatic operation of a semi-finished product for processing halfway of a desired product shape. And a semi-finished product automatic operation data memory 17b for storing data. In addition, it is memorize | stored in the said semi-finished product automatic operation data memory 17b of the automatic operation data for performing the process in the range which the user set.

  Then, the dedicated bending machine 23 performs the bending process under the control of the automatic operation data stored in the automatic operation data storage memory 17 or the automatic operation data of the semi-finished product.

  On the other hand, the bending machine control system 1 includes a general-purpose bending machine control system 25 as a subsystem. The general-purpose bending machine control system 25 includes a general-purpose bending machine automatic operation data generation unit 27.

  The general-purpose bending machine automatic operation data generation unit 27 reads a product shape (may be automatic operation data for products) and a shape of a semi-finished product (may be automatic operation data for semi-products) (in this example, these are read). A general-purpose bending machine (such as a bending robot) 31 is controlled to generate automatic operation data for a general-purpose bending machine for performing the remaining machining. The general-purpose bending machine automatic operation data is stored in the general-purpose bending machine automatic operation data memory 29.

  Here, the automatic operation data will be described with reference to FIGS. The automatic operation data is control data for automatically numerically controlling the operation of the bending machine and processing it into a desired product.

  FIG. 2 shows the configuration of a dedicated bending machine (panel vendor or the like) 23 controlled by automatic operation data. Here, since the dedicated bending machine 23 is already known, the outline will be described. The dedicated bending machine 23 includes a front table 35 on which the workpiece W is placed, a manipulator 37 that grips and moves the workpiece W with a clamp 39, and a clamp beam 41 that fixes the workpiece W positioned by the manipulator 37. And a bend beam 43 for bending the workpiece W.

  FIG. 3 shows an operation in which the dedicated bending machine 23 controlled by the automatic operation data bends the workpiece W. Reference is made to FIG. It is controlled based on the automatic operation data, and the workpiece W gripped by the clamp 39 is conveyed to a predetermined position. Reference is made to FIG. The clamp beam 41 presses and fixes the workpiece W that is controlled by the automatic operation data and is positioned at a predetermined position. Reference is made to FIG. Similarly, the bending operation is performed by raising the bend beam 41 with respect to the workpiece W positioned and fixed at a predetermined position, controlled by automatic operation data.

  4 and 5 show the operation of the bending machine control system 1. In step S401, the user inputs the final product shape. As a result, as shown in FIG. 5A, the automatic driving data generation unit 13 can recognize the product shape S as information.

  In step S403, the automatic driving data generation unit 13 performs processing for generating automatic driving data. The generated automatic operation data is sequentially stored in the product automatic operation data memory 17a.

  In step S405, the error detection unit 15 determines whether there is a program error. If it is determined that there is a program error, the process proceeds to step S411. When it is determined that there is no program error, the process proceeds to step S407. Here, the program error is data output when a shape that cannot be machined is detected.

  Reference is made to FIG. Indicates the cause of the program error. That is, it is a case where it is judged that the dedicated bending machine 23 cannot perform processing because the positions of the bending lines L1, L2, and L3 are different. At this time, a program error is output. It should be noted that other bending points can be bent.

  In step S407, automatic operation data generation by the automatic operation data generation unit 13 is completed when there is no program error. In step S409, the dedicated bending machine 23 performs actual machining. Thereby, a desired product (final shape product) is completed.

  In step S411, the error handling unit 19 generates automatic operation data up to the previous side. That is, automatic operation data for bending the product within a range where bending can be performed is generated (automatic operation data for bending the product to the shape of FIG. 5B is created).

  In step S413, the error detection unit 15 determines whether there is a program error. When it is determined that there is a program error, the process returns to step S411 (the processable range is determined by repeating this). When it is determined that there is no program error, the process proceeds to step S415.

  In step S415, the semi-finished product automatic operation data generation is completed. In step S417, the user (operator) is notified that actual machining is performed up to the state of the semi-finished product. In step S419, the dedicated bending machine 23 performs actual processing up to a semi-finished product.

  In addition, a product as shown in FIG.5 (c) is completed by processing the remaining process manually or automatically.

  Please refer to FIG. This shows a method in which a user can set a processing range for bending a product in advance for reasons such as setting up a subsequent process.

  FIG. 6A is a perspective view of the shape of the product. FIG. 6B is a side shape 51 of the product shape as viewed from the cross-section AA in FIG. FIG. 6C is a side shape 53 of the product shape as viewed from the cross section BB in FIG.

  That is, the product shape has hemming bent shapes 51a, 51b, 53a, 53b at the edge portions. By the way, when the bending process to make a final shape is the younger brother 1 process: hemming and the younger brother 2 process: 90-degree bending is performed on four sides, if the opening dimension D is too small, the dedicated processing machine 23 cannot process. In such a case, if the user sets on the screen displayed on the display 5 by the product shape setting unit 11 to preferentially perform the hemming bending, the setting coping unit 21 will be 90 as shown in FIG. Automatic operation data for a semi-finished product is generated without being bent, and stored in the semi-finished product automatic operation data memory 17b.

  That is, as a result, the semi-finished product that has been processed only by the hemming bending 51a, 51b, 53a, 53b is carried out.

  Please refer to FIG. 7 and FIG. A manufacturing process is shown in which a product (work W) is processed by a dedicated bending machine (panel vendor or the like) 61 and then bent by a general-purpose bending machine (bending robot) 63.

  In step S801, processing is performed by a dedicated bending machine (panel bender or the like) 61, and it is carried out as a semi-finished product HS.

  In step S803, the workpiece information (semi-finished product HS) is sent to the dedicated bending machine 61, and the remaining bending is performed based on the workpiece information (semi-finished product HS). As a result, a finished product S is produced.

  Here, the workpiece information includes two pieces of information (for example, shape information) of a product shape (a desired shape that is a shape that has been processed by a bending robot) and a semi-finished product that has been processed by a dedicated bending machine 61. Including. With these two pieces of information, it becomes possible to generate automatic operation data of a semi-finished product for performing the remaining processing by the general-purpose bending machine 63.

  In this example, a robot 63 that performs bending after the dedicated bending machine 61 is assumed. However, a processing machine that can perform bending may be used.

  Please refer to FIG. In the dedicated bending machine, the input of the predetermined product shape may be performed by numerical input from the screen displayed on the display 5 by the product shape input unit 9 (or the product shape setting unit 11). For example, for the A side, the bottom dimension, X: 1000.0, and Y: 240.0 are input. Enter the flange height [L] 20.0 and the bending angle [A] 90 degrees for the B side. Enter the flange height [L] 20.0 and the bending angle [A] 90 degrees for the C side. Enter flange height [L] 20.0 and bending angle [A] 90 degrees for D side.

  Please refer to FIG. The product shape information input method may be graphic information (such as a bend model file that is three-dimensional CAD data). As a result, the line segments A, B, C, and D are given information such as a 90-degree bend and a flange height of 20.0.

  In addition, this invention is not limited to the example of the embodiment mentioned above, It can implement in another aspect by adding an appropriate change.

It is the schematic explaining the outline of the control system of a bending machine. It is explanatory drawing explaining the outline of a dedicated bending machine (panel vendor). (A), (b), (c) is explanatory drawing explaining the operation | movement of bending. It is a flowchart figure explaining operation | movement of the control system of a bending machine. (A), (b), (c) is explanatory drawing explaining the product shape in FIG. (A), (b), (c) is explanatory drawing explaining the case where a user sets a bending location. It is explanatory drawing explaining the combined process of a dedicated bending machine and a general purpose bending machine. It is a flowchart figure explaining the operation | movement in FIG. It is explanatory drawing explaining the input of a product shape. It is explanatory drawing explaining the link of a product shape and bending information.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bending machine control system 3 Main control part 5 Display 7 Keyboard / mouse 9 Product shape input part 11 Product shape setting part 13 Automatic operation data generation part 15 Error detection part 17 Automatic operation data storage memory 19 Error handling part 21 Setting countermeasure Unit 23 Dedicated bending machine 25 General-purpose bending machine control unit 27 General-purpose bending machine automatic operation data generation unit 29 General-purpose bending machine automatic operation data memory 31 General-purpose bending machine

Claims (4)

A control system for a bending machine that controls the bending machine by generating automatic operation data for controlling the machining operation of the bending machine to refer to the acquired product shape information and to make the product into a desired shape. In
Means for detecting the case where it is impossible to generate automatic operation data for making a product into a desired shape;
Means for determining a workable range of the product, and generating automatic operation data of a semi-finished product for performing the work in the workable range;
A control system for a bending machine, wherein the bending machine is controlled so as to process the product to a range where the product can be processed based on the automatic operation data of the semi-finished product.   2. The bending machine control system according to claim 1, further comprising means for generating automatic operation data for performing a bending process within a range in which a process range is set in advance.   The bending process according to claim 1 or 2, further comprising means for generating automatic operation data of the general-purpose bending machine in order to perform the remaining processing for obtaining the desired product by a general-purpose bending machine. Machine control system. A bending machine control method for generating automatic operation data for controlling a machining operation of a bending machine to make a product into a desired shape with reference to the acquired product shape information and controlling the bending machine In
Detecting a case where it is impossible to generate automatic operation data to make a product into a desired shape;
Determining a processable range of the product and generating automatic operation data of a semi-finished product for performing the processing of the processable range,
A control method for a bending machine, wherein the bending machine is controlled so as to process the product up to a processable range based on automatic operation data of the semi-finished product.

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