JPH11244947A - Die dimension inputting method in bending machine and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a die dimension inputting method and its device in a bending machine which is capable of inputting a proper value into a controller by measuring the die dimension with a sensor provided without inputting it through handwork. SOLUTION: In a bending machine, a work is positioned, and a sensor S which detects the position/shape of the die 1 is provided in the tip end part of the end gage 2 of a positioning device TS which is transferable in the X, Y, Z directions. The dimension (width, height) of the die 1 is calculated based on detecting signals from the sensor S and end gage positional signals at the time of receiving detecting signals from the sensor S, and the calculated value is stored into a controller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for inputting a die size in a bending machine.

[0002]

2. Description of the Related Art At the same time, dimensions (width, height) of a die are input as mold information in advance to numerical control or the like, and at the same time, dimensions (depth, width, height) of an abutting portion are also input. In general, a moving path and the like of the butting device are created and read by the control device so that the die and the butting portion do not interfere with each other.

[0003]

However, in the above-described conventional example, there is a case where there is a discrepancy between the actually used die size and the value of the mold information input in advance to the control device. There is a problem that interference occurs and trouble occurs.

The present invention has been made by paying attention to the above-mentioned points. Instead of manually inputting, a sensor is provided to measure a die size, and an appropriate value can be input to a control device. An object of the present invention is to provide a method and an apparatus for inputting a die size in a bending machine.

[0005]

The present invention can solve the above-mentioned problems by providing the following constitution.

(1) In a bending machine, a sensor for detecting the position and shape of a die is provided at the abutting tip of an abutting device which is movable in the X, Y, and Z axes in a bending machine. The dimensions (width, height) of the die are calculated from the detection signal from the sensor and the abutment position signal when the detection signal is received from the sensor, and the calculated values are stored in the control device. Die size input method for machines.

(2) The method according to the above (1), wherein the sensor detects contact / non-contact with the die.

(3) The method according to the above (1), wherein the sensor detects a distance from the die.

(4) In a bending machine, a work is positioned and has a stop movable in the X, Y, and Z-axis directions, and a stop position detecting means for detecting a moving position of the stop and the stop. A tip has a sensor for detecting the size and shape of the die, based on a detection signal from the sensor and a position signal from the butting position detecting means for detecting a butting position when the detection signal is obtained. A die size input device for a bending machine, comprising: die size / shape calculating means for calculating a die size / shape.

(5) The die size input device for a bending machine according to the item (4), wherein the sensor detects contact / non-contact with the die.

(6) The die size input device for a bending machine according to the above (4), wherein the sensor detects a distance from the die.

[0012]

Embodiments of the present invention will be described below.

FIG. 1A is a schematic side view showing the positional relationship of a sensor according to the present invention, FIGS. 1B and 1C are side views showing the configuration and operation according to the present invention, and FIG. FIG. 3 is a side view showing the configuration and operation of another embodiment, FIG. 4 is a schematic perspective view showing an example of a coordinate system of an operation axis, and FIG. 5 shows an example of an interference situation between a die and an abutment. FIG. 6 is an explanatory view showing an example of a reference dimension for abutting.

Referring to the drawings, reference numeral 1 denotes a die (lower die), 2 denotes an abutment, and S denotes a sensor. A sensor S is provided at the tip of the abutment 2 in advance. It can move up and down (see FIG. 1A). The butting device (back gauge B / G) TS having the butting 2 and the sensor S is connected to the encoder EH via the ball screw B.
The motor MH can move forward and backward on the L (X) axis by the driving action of the motor MH, and the butting 2 can be moved up and down by mounting the motor MV with the encoder EV on the base of the butting device TS. O of the sensor S provided at the tip of
With the N / OFF signal, the die size e and the die height h can be measured and stored in the memory of the control device.

Abutment 2 provided with a sensor S at the tip is L
(X) When the sensor S is advanced along the axis, and the sensor S comes into contact with the die 1 to generate an ON signal, a CPU (not shown) in the control device performs an arithmetic process to store the value of the die dimension e in the memory. As a result, the butting 2 can be moved without interference.

Butting device (back gauge B / G) TS
Is movable in the X, Y, and Z directions, and the position of the abutment 2 on the axis in the three directions can be detected by an encoder EH attached to the motor MH. Since the butting dimension has been input to the control device, the tip position of the butting 2 can be calculated at any time.

In the embodiment of the present invention, a sensor S with an ON / OFF switch SW is provided at the tip of the abutment 2, and the abutment 2 is brought into contact with the die 1 from the reference position FH. 1D, the die dimension e of the die 1 is adjusted by an ON signal (contact signal) from the switch SW of the sensor S, as shown in FIG. From the distances (position dimensions) l and a,
Then, as shown in FIG. 1 (c), while keeping the switch SW in the ON state, the abutment 2 is raised along the Z-axis, and the OFF signal (separation signal) from the switch SW is obtained. ), The die height h (h = Z-axis distance) is calculated, and the values of the die dimension e and the die height h can be stored in the memory of the control device.

The operation will be described based on the above configuration and the flowchart of FIG.

Butt 2 with switch SW at tip
Is moved in the die 1 direction (S
20), receiving the ON signal (S21) of the switch SW, calculating the die size e from the abutting position (on the L or X axis) at the time of ON, storing this value in the control device,
Then, while keeping the switch SW in the ON state, the butting 2 is raised along the Z-axis (S22), and when the OFF signal is issued (S23), the process proceeds to the next S24, where the switch SW is turned off. The die height h is calculated from (on the Z axis), and this value is stored in the memory of the control device. After the input of the mold information is completed (S25), the bending process starts (S26).

(Other Embodiments) In the above-described embodiment, the case where the contact type switch SW is used as the sensor has been described. The case where the non-contact type switch is used as the sensor will be described with reference to FIG. This will be described below.

A non-contact type sensor S1 is provided at the end of the butting device 2 of the butting device TS.
The butting device TS can be moved along the L (X) axis via a ball screw B by a motor MH provided with an encoder EH, 11 is a distance dimension from the center of the die 1 to a reference line FH, and a1 is a sensor S1. Is a distance dimension from the tip of the motor M to the reference line FH, and these l1 and a1 are predetermined values, and are provided at the tip of the butting 2 by the encoder EH attached to the motor M and the non-contact sensor S1. Distance x between the non-contact sensor S1 and the die 1
And thus the die dimension e is e = 11
It can be calculated from the arithmetic expression of-(a1 + x).

FIG. 4 shows an example of the configuration of a coordinate system and an operation axis. The D1 and D2 axes are the vertical axes of the left and right cylinders of the lower table, and the L1 and L2 (X1, X2) axes are the back gauges. The axes of the left and right ball screws in the front-rear direction are Y1, Y
The two axes are the left and right back gauge left and right axes,
The Z axis represents the vertical axis of the back gauge abutment.

FIG. 5 shows an example in which the die and the butting interfere with each other due to a discrepancy in the input to the control device. FIG. 6 shows an example of the reference dimension of the butting, and the depth a0 from the reference line FH, It is explanatory drawing which shows the example at the time of the width b0 of a butting, and the height c0 of a butting.

[0024]

According to the present invention, a sensor is provided at the abutting tip of the abutting device (back gauge B / G), and the die size and the die height are mechanically controlled before machining by combination with the encoder. By being able to measure, interference between the die and the abutment can be prevented, and the effect of eliminating a trouble and improving the operation rate is exhibited.

[Brief description of the drawings]

FIG. 1A is a schematic side view showing a positional relationship of a sensor according to the present invention, and FIGS. 1B and 1C are side views showing a configuration and an operation according to the present invention.

FIG. 2 is a flowchart showing an operation procedure;

FIG. 3 is a side view showing the configuration and operation of another embodiment.

FIG. 4 is a schematic perspective view showing an example of a coordinate system of an operation axis.

FIG. 5 is an explanatory diagram showing an example of an interference situation between a die and an abutment.

FIG. 6 is an explanatory view showing an example of a reference dimension for abutment.

[Explanation of symbols]

 1 die 2 butting S sensor (contact type) S1 sensor (non-contact type) e die size h die height TS butting device B ball screw EH, EV encoder MH, MV motor

Claims (6)

[Claims] In a bending machine, a sensor for detecting a position and a shape of a die is provided at an abutting tip of an abutting device which can move a workpiece in X, Y, and Z axes directions. A bending machine characterized in that the dimensions (width, height) of a die are calculated from a detection signal from the sensor and a butting position signal when receiving a detection signal from the sensor, and the calculated values are stored in a control device. Die size input method. 2. The method according to claim 1, wherein the sensor detects contact / non-contact with the die. 3. The method according to claim 1, wherein the sensor detects a distance from the die. 4. A striking position detecting means for positioning a work in a bending machine, having a striking position movable in X, Y, and Z axes, detecting a moving position of the striking position, and the striking tip. The unit has a sensor for detecting the size and shape of the die, based on a detection signal from the sensor and a position signal from the butting position detecting means for detecting a butting position when the detection signal is obtained, A die size input device for a bending machine, comprising a die size / shape calculating means for calculating a die size / shape. 5. The apparatus according to claim 4, wherein the sensor detects contact / non-contact with the die. 6. The die size input device according to claim 4, wherein the sensor detects a distance from the die.