JPH09168901A - Detection device for abnormal cutting for peeling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically detect damage to a cutting tool occurring in peeling work, without needing opreator's surveillance, to prevent the occurrence of an abnormal material. SOLUTION: In a peeling machine for performing cutting work by a cutter 5, a cutting tool, in carrying a peeling material W, the following are provided : a vibration detecting sensor 10 for detecting vibration occurring at the time of cutting work by a cutting tool; and a control means B having a threshold value wherein the size of vibration cocurring when the cutting tool is damaged, and stopping the operation of the peeling machine when the vibration size, detected by the sensor 10, exceeds this threshold value several times in a time wherein one peeling material is carried.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting abnormality detection device for a peeling machine, which cuts a plurality of peeling materials each having a predetermined length continuously with a cutting tool, and more particularly, a cutting abnormality caused by damage of the cutting tool. The present invention relates to a device for early detection of.

[0002]

2. Description of the Related Art Prior to straightening by a two-roll straightening machine, a peeling machine is used to polish the surface of a round bar after cutting to make a polished steel bar. There was no means to detect a damage accident where the blade of the cutting tool was chipped. Therefore, if the cutting tool is damaged during the peeling process, a large amount of abnormal material may be generated in the peeling material. In addition, whether the cutting tool is damaged,
There was an inconvenience that the operator had to constantly monitor while operating the peeling machine.

[0003]

SUMMARY OF THE INVENTION Therefore, the present invention solves the above-mentioned problems of the prior art, and automatically eliminates the breakage of the cutting tool that occurs during peeling without the need for operator monitoring. It is an object of the present invention to provide a cutting abnormality detection device for a peeling machine that can detect and prevent the generation of abnormal materials.

[0004]

In order to achieve the above object, the present invention provides a peeling machine as described above, in which a vibration detection sensor for detecting a vibration generated during cutting by a cutting tool and a cutting tool are damaged. There is a threshold value that sets the magnitude of vibration that occurs occasionally, and when the magnitude of vibration detected by the vibration detection sensor exceeds this threshold value multiple times during the time when one peeling material is conveyed, And a control means for stopping the operation of the peeling machine.

[0005]

1 is a schematic front view of a peeling machine according to an embodiment of the present invention, and FIG. 2 is an enlarged schematic vertical sectional front view of a portion A in FIG. Reference numeral 1 denotes a peeling machine, which continuously feeds a plurality of peeling materials W by a feed roller 2 in the horizontal direction indicated by an arrow by abutting the front and rear end surfaces thereof as joints. The outer surface of each conveyed peeling material W is cut by a cutter 5 which is a cutting tool installed in the machine body 3 during conveyance. As shown in FIG. 2, a hollow drive shaft 6 is disposed inside the machine body 3 while being supported by bearings 7 along the conveying direction of the peeling material W. The cutter 5 is attached to one end of the drive shaft 6 facing the feed roller 2 side, and the other end is opened. A timing belt 8 is wound around the drive shaft 6, and when the timing belt 8 is rotated by a drive motor (not shown), the drive shaft 6 is rotated by the belt and the cutter 5 is rotated. .

A vibration detecting sensor 10 composed of a piezoelectric element is attached to the machine body 3 near the drive shaft 6 so as to detect the vibration generated during cutting by the cutter 5. The vibration detection sensor 10 is connected to a controller 12 having a digital switch 11 for setting a threshold value which will be described later, and a control member (sequencer) 13 is connected to the controller 12. The control member 13 constitutes the controller 12 and the control means B. As shown in FIG. 3, the controller 12 has a threshold value (detection level) 14 that sets the magnitude of vibration generated when the cutter 5 is damaged, and the magnitude of vibration detected by the vibration detection sensor 10 is When the threshold value 14 is not exceeded, or even when the threshold value 14 is exceeded, the time during which one piece of peeling material W is conveyed (when the length L of the peeling material W is about 5 m, it is about 20 seconds). When it is once, the control member 13 does not process it as an abnormal signal. As shown in FIG. 3, when the seam of the peeling material W passes through, the magnitude of vibration instantaneously reaches a threshold value 14
Therefore, if the peeling material W is conveyed only once in a time period as described above, it is not considered as an abnormal signal.

However, as shown in FIG. 4, when the peeling material W is conveyed a plurality of times, for example, 5 times in 3 seconds, when the threshold value 14 is exceeded, a signal from the controller 12 to the control member 13 is sent. Is treated as an abnormality, and the operation of the peeling machine 1 is stopped by a control signal from the control member 13. In FIG. 2, reference numeral 15 is a guide roller. Also in FIG.
16 is a carriage and 17 is a guide roller.

As described above, when the peeling material W is conveyed by the feed roller 2 and is normally cut by the cutter 5 of the peeling machine 1 during the conveyance, the vibration detected by the vibration detecting sensor 10 is detected. 3 does not exceed the threshold value 14 as shown in FIG. 3, and exceeds the threshold value 14 only when the seam of the peeling material W passes through. Therefore, no control signal is output from the control member 13, and the peeling machine 1 continues the cutting process by the cutter 5. On the other hand, when the blade of the cutter 5 is broken or damaged by cutting, the magnitude of the vibration detected by the vibration detection sensor 10 is several times during the time when one peeling material W is conveyed, as shown in FIG. Exceeds a threshold of 14. Therefore, in such a case, the control signal is output from the control member 13,
The operation of the peeling machine 1 is stopped, such as stopping the feeding of the next peeling material W.

Vibration detection sensor 10 according to this embodiment
Needless to say, the mounting position of is not limited to the illustrated position. Also, the controller 12
The detailed configuration of the control member 13 and the control member 13 can be arbitrarily changed in practice.

[0010]

Since the present invention is constructed as described above, it is possible to automatically detect a damage accident of a cutting tool that occurs during peeling. Therefore, it is possible to minimize the occurrence of the abnormal material of the peeling material that has been conventionally generated, and it is possible to manufacture a high quality peeling material.
Further, there is an excellent effect that unmanned operation in the peeling process is possible because the operator's monitoring work which is conventionally required is unnecessary.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a peeling machine according to an embodiment of the present invention.

FIG. 2 is an enlarged schematic vertical sectional front view of a portion A in FIG.

FIG. 3 is a diagram showing a vibration waveform when the cutter is not damaged and is in a normal operation state.

FIG. 4 is a diagram showing a vibration waveform in an abnormal operating state in which a cutter is damaged.

[Explanation of symbols]

 1 Peeling machine 2 Feed roller 3 Machine body 5 Cutter (cutting tool) 6 Drive shaft 7 Bearing 8 Timing belt 10 Vibration detection sensor 11 Digital switch 12 Controller 13 Control member 14 Threshold B Control means W Peeling material

Claims (1)

[Claims] 1. A peeling machine for cutting with a cutting tool while continuously conveying a plurality of peeling materials of a predetermined length, wherein a vibration detection sensor for detecting vibration generated during cutting with the cutting tool and a cutting tool are provided. It has a threshold value that sets the magnitude of vibration that occurs when it is damaged, and the magnitude of vibration detected by the vibration detection sensor exceeds this threshold value multiple times during the time when one peeling material is transported. A cutting abnormality detecting device for a peeling machine, comprising: a control means for stopping the operation of the peeling machine.