JPH0732933B2 - Bending die automatic selection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a method for automatically selecting a bending die in a folding machine.

(Prior Art) Conventionally, the selection of a bending die in a folding machine has been performed by visually comparing the shape of the product to be folded with the die stored in the rack or by comparing the product drawing with the die drawing. This is done by hand.

(Problems to be Solved by the Invention) However, manual selection of a mold requires a lot of labor, and the plate material and the mold or the mold holder may interfere with each other against expectations.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an automatic bending die selection method that solves the above-mentioned problems and enables a die to be automatically, quickly and surely checked by a computer.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, in the present invention, the shape data and the priority of use for other molds are given to the molds that are angularly divided by the minimum bending angle. Attach the mold file to configure the mold file, first select the mold group that is angle-divided according to the minimum bending angle in the product shape, and then in order of priority from the selected mold group. A simulation for checking the presence or absence of interference was performed, and a die that did not interfere with the product and the machine including the die was selected as the bending die.

(Operation) In the present invention, a die group is selected that is angle-divided according to the minimum bending angle in the product shape, and the plate material and the machine (die are placed in order of priority from the selected die group). It is confirmed whether or not there is interference with the mold, and the mold that is first determined not to interfere is selected as the optimum mold for bending the product.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an explanatory diagram showing a line arrangement of a folding machine.

As shown in the figure, the computer 1 is arranged on the management room side, and the folding machine 3 is arranged on the site side. A control device 7 having a CRT 7a is attached to the folding machine 3, and the control device 7 and the computer 1 are connected to each other via a communication line (for example, optical fiber) 5 so as to be capable of bidirectional communication.

The folding machine 3 has a punch 9 and a die 11, and the die 11 is fixed to an upper portion of a ram 13 and is vertically driven by a cylinder device. Further, the folding machine 3 is provided with a back gauge (not shown) on the back side of the die 11 which can be driven back and forth by a servo motor (not shown).

The bending machine 3 bends a plate material (not shown), which is brought into contact with the back gauge from the front side by the work supply service of the operator, between the punch 9 and the die 11 by driving the die 11 upward. To process.

In this example, the bending die is automatically selected by the computer 1, the selected die is sent to the control device 7 via the optical fiber 5, and a predetermined die setting operation is performed there.

FIG. 2 is a block diagram showing a functional configuration of the computer 1.

As shown, the computer 1 has a product shape setting unit 15
And a machine shape registration unit 17 and a mold data file 19.

The product shape setting unit 15 is connected to a drawing input device, a keyboard and the like, and the product shape to be processed is set and stored therein.

The machine shape registration unit 17 registers the machine arrangement of the punch 9 of the folding machine 2 and the holder (table) of the die 11 and the back gauge. This is data unique to the folding machine 3.

As shown in FIG. 3, the mold data file 19 is used to classify the punch 9 and the die 11 according to the minimum bendable angle, store them with priorities.

The bendable angle is 90 degrees or more, 60 degrees or more 90
It is divided into four types: less than 30 degrees, less than 30 degrees and less than 60 degrees, and less than 30 degrees.

The mold shape data is data necessary for defining the outer shape of each mold, as shown in FIG.

The priority given to each mold within the same section is the order of priority for use.

It should be noted that in the file 19, the punches 9 and the dies 11 may be provided with the degrees of use and the shape data may be corrected in consideration of the degree of wear used.

The product shape setting unit 15, the machine shape registration unit 17, and the mold data file 19 are connected to the bending mold automatic selection unit 21 in such a manner that the data set and stored in each unit 15, 1719 can be output appropriately. There is. The die automatic selection unit 21 is connected to the communication control unit 23.

The bending die automatic selection unit 21 automatically selects a die capable of bending the plate material at a predetermined angle without the plate material and the machine interfering with each other by the method described later, and the selected die number is set by the communication control unit 23. ,
It is sent to the CRT 7a of the control device 7 via the optical fiber 5,
The mold number is displayed on 7a.

FIG. 5 is an explanatory diagram of a simulation for checking the presence or absence of interference between the plate material (product) W and the machine. FIG. 6 is a flowchart of the automatic bending die selection system.

In FIG. 6, in step 601, product shape data is input.

In step 602, the minimum bending angle A _MI I of the product W is calculated.

In step 603, a die group of a predetermined section is selected according to the bending angle A _MI I. In the product example shown in FIG. 5, the bending angles are all 90 degrees, and the minimum bending angle A _MI I is 90 degrees, so
From the die file shown in FIG. 3, die groups of A ≧ 90 are selected.

At step 604, one die having the highest priority is selected from the selected die group.

In step 605, as shown in FIG. 5, the shape of the plate material before and after bending in the minimum bending angle A _MI I portion and the position state of the machine (including the mold) are simulated, and the presence or absence of interference is checked.

In FIG. 5, the punch holder 9a is displayed on the upper part of the punch 9 and the back gauge BG is displayed on the rear side of the die 11, but the layout display of these machines is for checking the presence or absence of actual interference. Is essential to

In step 606, the result of presence / absence of interference is determined, and the plate material
If the machine interferes with the machine, the process proceeds to step 604, and the die having the next highest priority is selected.

If it is determined in step 606 that there is no interference, the process proceeds to step 607, where the mold is selected as a bending mold and the mold number is displayed on the CRT 7a.

As described above, the optimum bending mold for bending the product W is automatically, quickly and accurately selected. Since we searched for a mold that can be bent at the minimum bending angle A _MI I, there is no unfoldable part in the selected mold.

Further, in this example, since the simulation of presence / absence of interference is performed in consideration of all machine arrangements related to interference, the plate material and the machine do not interfere with each other during the actual machining.

The present invention is not limited to the above embodiment, but can be implemented in other modes by making appropriate design changes.

[Effects of the Invention] As described above, according to the present invention, a mold file is configured by assigning shape data to molds that are angle-divided according to the minimum bending angle and priorities of use for other molds. , First select a mold group that is angle-divided according to the minimum bending angle in the product shape, then perform a simulation to check for interference from the selected mold group in order of priority. ,
Since the mold that does not interfere with the product and the mold is selected as the bending mold, the mold selection can be automatically, quickly and accurately performed by the computer.

[Brief description of drawings]

Each of the drawings shows an embodiment of the present invention, FIG. 1 is a layout explanatory view showing the positioning of a computer in a folding line, FIG. 2 is a block diagram of a functional configuration relating to automatic selection of a bending die of the computer 1, and FIG. FIG. 4 is an explanatory view of a mold file, FIG. 4 is an explanatory view of a mold shape, FIG. 5 is an explanatory view of a simulation, and FIG. 6 is a flowchart of a bending die automatic selection system. 1 ... Computer 3 ... Bending machine 9,11 ... Mold (punch and die) 19 ... Mold file 21 ... Bending die automatic selection section A ... Bending angle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Omura 200 Ishida, Isehara-shi, Kanagawa Amada Co., Ltd. (72) Inventor Yasuo Mochizuki 200 Ishida, Isehara-shi, Kanagawa Amada (72) Inventor Kentaro Kojima 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Inside Amtech Co., Ltd. (72) Inventor Nobuhiko Sato 1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Inside Amtec Co., Ltd. (56) Reference JP-A 62-296921 (JP, A)

Claims (1)

[Claims] 1. A mold file is constructed by adding shape data and a priority of use to other molds to a mold which is angle-divided according to the minimum bending angle in the product shape, and first, the minimum bend in the product shape. Select a mold group that is angle-divided according to the angle, then perform a simulation to check for interference from the selected mold group in order of priority, and include the product and the mold. A method for automatically selecting a bending die, wherein a die that does not interfere with a machine is selected as a bending die.