JPH0281716U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the outline of the invention, Figure 2
The figures below show examples, and Fig. 2 is a side view showing the overall configuration of the bending machine, Fig. 3 is an explanatory diagram showing the mounting structure of the distance sensor installed on the die of the above-mentioned bending machine, and Fig. 4 5 is a block diagram showing the configuration of the control device, FIG. 5 is a block diagram showing the device configuration for using the distance sensor as an angle sensor, FIG. 6 is an explanatory diagram showing the characteristics of the detected angle with respect to the detected distance, and FIG. 7 8 is a side view and a plan view of a sensor mounting structure showing an example in which a pair of distance sensors are arranged facing each other on a die, and FIG. 9 is a diagram of the signal processing circuit of the distance sensor shown in FIGS. 7 and 8. The block diagram, FIGS. 10 and 11 are explanatory diagrams of control examples of bending processing, FIG. 12 is a side view of a bending machine showing another embodiment, and FIG. 13 is an illustration of the bending machine of FIG. 12. 14 is a block diagram of a control device applied to the bending machine shown in FIG. 12. DESCRIPTION OF SYMBOLS 1... Bending condition input means, 2... Control angle setting means, 3... Bending angle detection means, 4... Comparison means, 5
...Mold driving means.

Claims (1)

[Scope of utility model registration request] The material of the plate to be bent, the thickness of the plate, the mold used,
A bending condition input means for inputting bending conditions such as bending angle, and considering the difference between the current angle in the pressurized state at the end of machining and the product angle after depressurization due to spring back amount etc. for the input bending angle. a control angle setting means for setting a control angle in a pressurized state; a bending angle detection means for detecting a current bending angle of the plate material during bending; A comparison means for comparing the set control angle and outputting a predetermined mold drive command according to the difference, and a comparison means for outputting a predetermined mold drive command according to the difference, and a comparison means for comparing the final bending angle with the product bending angle in a depressurized state based on the command signal from the means. A bending processing device characterized by comprising a mold driving means for driving a mold so that the mold is bent.