JPH0221137Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Technical field of invention] This invention relates to a butt gauge for a bending machine.

[Description of Prior Art] Generally, various machines are provided with interference prevention means called overtravel prevention means or override prevention means to prevent tools and materials, tools and other tools, etc. from interfering with each other. There is. For example, in turret punch press machines, consideration has been given to preventing material clamping devices from entering the press area. Specifically, a prohibited area is set and a limit switch is provided in this area, and when the limit switch is activated, the machine is stopped.

However, when applying these conventional interference prevention means to prevent interference between the abutment gauge and punch of a bending machine, the position of the limit switch must be fixed because the type of punch is frequently replaced in the bending machine. It is impossible to attribute it to
Furthermore, there is a problem in that it is inefficient to change the position of the limit switch each time depending on the type of punch.

[Purpose of the invention] The object of this invention is to improve the above-mentioned problems and provide an abutment gauge for a bending machine that is equipped with efficient interference prevention means.

[Summary of the invention] In order to achieve the above purpose, this invention
As shown in the diagram corresponding to the complaint, automatic command means 1 commands the automatic positioning operation of the abutment gauge, manual command means 3 performs the movement operation only during operation, and these command means 1, 3. a motor driving means 5 for driving a motor for moving the abutment gauge based on a command signal from the abutment gauge; a position detection means 7 for detecting the current position of the abutment gauge; A limit position setting means 9 that sets based on the mold shape; and a manual position determining means 11 that outputs a both position coincidence signal when the abutment gauge position detected by the position detecting means during manual operation matches the limit position. and an abutment gauge stop means 13 which outputs a motor drive stop command signal to the motor drive means 5 based on the both position matching signals outputted from the means 11, and when the positioning position of the automatic command means 1 is set to the automatic position determination means 15 that outputs an area entry signal when the position is below the limit position; movement prohibition means 17 that outputs a command value output prohibition signal to the automatic command means 1 based on the area entry signal from the means 15; The butt gauge 19 of the bending machine was constructed by having the following.

[Explanation of Examples] Examples of this invention will be described below.

Fig. 2 is a rear perspective explanatory view of a bending machine to which this invention can be applied, Fig. 3 is a block diagram of the control device of the bending machine, Fig. 4 is an explanatory diagram of the relationship between the bending mold and the back gauge, FIG. 5 shows a processing flowchart of the folding machine.

As shown in FIG. 2, the bending machine 21 has an operation box 23 on the front side that can be moved left and right, and a control box 25 provided on the outer wall of the frame on one side.
Strong electric box 2 installed on the outer wall of the frame on the other side
7. A back gauge 33 is provided inside the bending machine 21 for positioning a plate (not shown) inserted from the front between the punch 29 and the die 31 shown in FIG. The illustrated bending machine 21 is of a type that performs bending work by raising the die 31, and FIG. 2 shows a D-axis setting handle 35 for setting the upper limit position (bending end) of the die 31. has been done.

The back gauge 33 includes an abutting plate 33a and a two-way plate for moving the abutting plate 33a in the front and back direction.
Two servo motors 33b and 33c are provided. Servo motors 33b, 33c and abutting plate 33
It is connected to a via an appropriate speed change mechanism and screw mechanism.

As shown in FIG. 3, the control device 3 of the bending machine 21
7 is an operation panel 23a, a main control section 25a, a positioning control module 25b, and a servo amplifier 3.
9, three motors 41, 33b, 33c, and attached members for these motors.

Although not shown, the operation panel 23a is provided with a numeric keypad, a display, and various other control keys.
It is possible to issue a positioning command for the back gauge 33.

The main control section 25a is composed of, for example, a microcomputer, and controls all the bending operations.

The positioning control module 25b is a motor 33
b, 33c, and 41 are controlled.
The servo amplifier 39 is actually provided for each motor, amplifies the control signal output from the positioning control module 25b, and applies the amplified voltage to each motor 33b, 33c, 41.

The D-axis motor 41 is used to determine the upper limit position of the die 31 shown in FIG. 4, but since it is not directly related to the present invention, its details will be omitted here. Each motor 33b, 33c, 41 is provided with a speed detector TG and a position detector TG, respectively. In this example, the moving axis of the back gauge 33 is the X axis, the bending line position is the origin O, and the direction from the origin O to the back of the bending machine 21 is defined as a plus (+) direction. In this example, the limit position Xot of the back gauge 33 is set to d/2+α. α is a correction value for safety, and is, for example, a value of 1 mm.

The operation of the bending machine having the above configuration will be explained based on FIG. 5.

Step 501 shows the process of setting the desired conditions, in which the operator inputs the V-groove width d of the die.

Step 503 shows the calculation process of the limit position Xot. As a result, the limit position Xot is d/2
+α will be set.

Step 505 is for determining whether the work is automatic or manual. Then, if it is automatic operation, the process moves to step 507.

Step 507 shows a comparison process between the bending position _X1 and the limit position Xot, and if the bending position _X1 is less than the limit position, the process moves to step 511 to prevent the back gauge 33 and the punch 29 from interfering. At this point, a message indicating that the work is not possible will be displayed. When the bending position _X1 is greater than the braking position Xot in step 507, the process moves to step 509 and normal bending work is performed.

On the other hand, if manual operation is confirmed in step 505, the process moves to step 513.

Step 513 shows the back gauge movement command operation by the operator. Step 515 shows the process of moving the back gauge 33.

Step 517 is the current position of the back gauge 33
This shows the process of determining whether or not the position has reached the limit position Xot. If X=Xot, the process moves to step 523, where the movement command in step 513 is forcibly canceled, and a message to that effect is displayed in step 525. That will happen.

Step 519 is to set the back gauge 33 to the desired position.
This is to judge whether or not the bending process has become _X2 , and step 521 indicates that it is possible to proceed to the bending operation.

In the bending machine 21 having the above configuration, with the limit position Xot as a reference, the back gauge 33 can be prohibited from entering the interference area when it is automatic, and it is possible to stop the back gauge 33 at the limit position Xot when it is manual.

In the above embodiment, an example was shown in which the V-groove width of the die is input via MDI (Manual Data Input) from the operation panel 23a, but it goes without saying that the limit position Xot may also be input directly.

[Effects of the invention] With the abutment gauge of the bending machine according to the invention described above, operations in which the abutment gauge enters the interference area can be prohibited when automatic, based on the limit position of the abutment gauge, and when manual This means that the abutment gauge can be stopped at the limit position.

[Brief explanation of drawings]

Fig. 1 is a diagram corresponding to the claims of this invention, Fig. 2 is a rear perspective explanatory view of a folding machine to which this invention can be applied, Fig. 3 is a block diagram of a control device of the folding machine, and Fig. 4 is An explanatory diagram of the relationship between the bending die and the back gauge, and FIG. 5 is a processing flowchart of the bending machine. 1...Automatic command means, 3...Manual command means, 5
...Motor drive means, 7...Position detection means, 9...
...Limit position setting means, 11...Manual position determination means, 13...Abutment gauge stopping means, 15...Automatic position determination means, 17...Movement prohibition means, 19
...The butt gauge of the bending machine.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Automatic command means for commanding the automatic positioning operation of the stop gauge, manual command means for causing movement only while the stop gauge is being operated, and command signals from these command means. a motor drive means for driving a motor for moving the abutment gauge based on the abutment gauge; a position detection means for detecting the current position of the abutment gauge; and a limit position of the abutment gauge is set based on the shape of the work mold. a limit position setting means; a manual position determining means for outputting a both position coincidence signal when the abutment gauge position detected by the position detecting means during manual operation matches the limit position;
an abutment gauge stop means for outputting a motor drive stop command signal to the motor drive means based on both position matching signals outputted from the means; An automatic time position determination means that outputs an area entry signal when the area enters, and a movement prohibition means that outputs a command value output prohibition signal to the automatic command means based on the area entry signal from the means. Bending machine's butt gauge. (2) The abutment gauge for a bending machine according to claim 1, wherein the limit position setting means automatically calculates the setting position based on the groove width of the bending die.