JPH0483540A - Cutting processing apparatus - Google Patents

Abstract

PURPOSE:To carry out the treatment corresponding to a state by providing a load state detector detecting the load state applied to a rotary cutter group and an apparatus discriminating whether the clogging of an object to be treated is caused by foreign matter or by a normal object to be treated from the load state. CONSTITUTION:A rotary driving apparatus 11 can selectively rotate rotary cutter groups A, B in forward and reverse directions and a member 30 preventing the falling of an object to be treated is opened and closed by an opening and closing apparatus 32. Further, a load state detector 35 detects the load states applied to the rotary cutter groups A, B. A discrimination apparatus 36 discriminates whether the clogging of the object to be treated is caused by foreign matter or a normal object to be treated from the load state and a control apparatus 7 temporarily reverses the rotary cutter groups when the clogging of the object to be treated is caused by the normal object to be treated and also reversely rotates the rotary cutter groups temporarily when the clogging is caused by the foreign matter and opens the falling preventing member 30. As a result, the release treatment corresponding to the clogging object can be carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cutting device for cutting metal scraps generated in various factories, and particularly to a cutting device equipped with a rotary cutter.

[Prior Art] Conventionally, as a technique in this type of field, the technique shown in FIGS. 7 and 8, which mainly treats empty cans and metal scraps, is known. The outline will be explained below based on the figure.

In FIG. 7, reference numeral 1 represents a box, and in this box 1, two rotating shafts 3.4 are arranged parallel to each other and bearings 2. It is supported through... Each rotary shaft 3.4 has a rotary cutter 5 having a plurality of blades 5a (FIG. 8) arranged in the circumferential direction in a portion extending inside the box 1, and a rotary cutter 5 having a smaller diameter than the rotary cutter 5. spacers 6 are alternately externally fitted and supported in the axial direction, and each constitutes a rotary cutter group A, B as a whole.

In the rotary cutter groups A and B, the thickness of the rotary cutter 5 and the thickness of the spacer 6 are made equal, and when attached to the box 1, the adjacent rotary cutters of one rotary cutter group The rotary cutter 5 of the other rotary cutter group is fitted between the rotary cutters 5 and 5. In other words, the spacer 6 of the rotary cutter group functions as a support for the rotary cutter 5 of the other rotary cutter group.

In the rotary cutter groups A and B, the distance between the rotary shafts 3 and 4 is set to be 1/2 the sum of the outer diameter of the rotary cutter 5 and the outer diameter of the spacer 6. being done. As a result, when the rotary cutter groups rotate, the cutting edge of the blade 5a of the rotary cutter 5 in one rotary cutter group comes into contact with the outer peripheral surface of the spacer 6 in the other rotary cutter group.

Further, a rotating shaft 3 protruding outward from the box 1,
Spur gears 7.8 that mesh with each other are attached to one end of 4, respectively. Further, a motor 11 is connected to the other end of the rotating shaft 3 via a speed reducer 10 fixed to the box 1 . The motor 11 is fixed to the base of the processing device by attaching two rows of leg portions 11a to the base of the processing device using a plurality of bolts 12. The rotary cutter group A is rotationally driven by this motor 11, and further, the rotary cutter group B is rotationally driven in the opposite direction to the rotary cutter group A through the spur gears 7 and 8.

In addition, inside the box l, a comb-shaped workpiece fall prevention member 13 is provided at a position outside the rotary cutter 5 and the spacer 6, and is in contact with both the rotary cutter 5 and the spacer 6.
13 are arranged. Further, a hopper 15 having an opening 14 extending over almost the entire area above the rotary cutter groups A and B is mounted on the box l, as shown by imaginary lines in FIG.

Next, the rotary cutter 5 of the conventional cutting device configured as described above will be explained in more detail using FIG. 8.

FIG. 8 is a cross-sectional view of the upper side of the cutting device shown in FIG. 7.

On the outer periphery of the rotary cutter 5, a plurality of blades 5a having the same shape are arranged along the circumferential direction. The cutting edge surface 16a of each blade 5a is formed to match the radiation surface of the rotary cutter 5. Also,
The extending direction of the cutting edge at the tip of the blade 5a of the rotary cutter 5 coincides with the extending direction of the generatrix of the rotary cutter 5. As a result, the rotary cutter 5 in one rotary cutter group
When the cutting edge of the blade 5a contacts the outer peripheral surface of the spacer 6 in the other rotary cutter group, the entire cutting edge of the blade 5a contacts the outer peripheral surface of the opposing spacer 6 at the same time.

Next, - the operation of this cutting processing device will be explained.

When the motor 11 is driven, the rotational force of the drive shaft is first transmitted to the rotary shaft 3 through the reducer 10 to rotate the rotary cutter group A, and further transmitted to the rotary shaft 4 through the spur gears 7 and 8. and the rotary cutter group B is rotated. In this case, the rotating directions of the rotary cutter groups A and B are opposite to each other, and the cutting edge surface 16 of the rotary cutter 5
This is the direction in which the input material can be drawn between the rotary cutter groups A and B by arrow a (see the arrow in FIG. 8). This direction of rotation is defined as the forward direction of the rotary cutter groups A and B.

Here, when input materials such as empty cans and metal scraps are put into the hopper 15, the input materials are loaded on the rear surface 16b of the blade 5a, and the following cutting blade surface 16a moves the input materials to the rotating cutter groups A and B. Mainly rotary cutter group A,
It is cut into a predetermined size by the shearing action between the blades 5a at B. The input material thus cut is then discharged downward through the gap formed between the rotary cutter 5 and the spacer 6 as the rotary cutter groups A and B rotate.

Note that the cutting of the input material is also performed by the interaction between the blade 5a and the spacer 6 facing it. That is, the eighth
As shown in the figure, for example, when the cutting edge of the blade 5a of the rotary cutter 5 in the rotary cutter group A comes into contact with the spacer 6 in the rotary cutter group B, a part of the input material is transferred to the blade 5a.
When present at the cutting edge position a, the input material is pushed off by the blade 5a of the rotary cutter group A and the spacer 6 of the rotary cutter group B in this cutting processing device.

[Problems to be Solved by the Invention] However, in the cutting processing apparatus having such a configuration, when cutting the input material, the input material is drawn in by the rotary cutter groups A and B, so that When cutting curled chips, etc., the input material is likely to become clogged. Then, if the input material becomes clogged, motor 1
1 is inhibited from rotating, and the drive current level of the motor 11 increases, causing damage to the motor 11. Therefore, in the past, it was necessary for the operator to constantly monitor the state of the cutting process, and if the input material became clogged, it was necessary to immediately stop the motor 11 and clear the jam.

In addition to the problem of dealing with clogging caused by such input materials, there are also materials with high hardness in the input materials, or substances that significantly impede cutting by the rotation of rotary cutter groups A and B (
When foreign matter (hereinafter referred to as foreign matter) is mixed in, the rotation of the motor 11 is completely inhibited, causing problems such as damage to the motor 11 and damage to the blade Sa. Therefore, when a blockage occurs due to a foreign object, the operator must immediately stop the rotation of the motor 11 and remove the foreign object by hand, or use a lifting device in the case of a large-scale cutting equipment. It was necessary to remove the foreign object.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cutting device that can distinguish between clogging caused by the worker itself and clogging caused by abnormal stretch, and can automatically release the clogging condition according to the result of the discrimination.

Specifically, it is an object of the present invention to provide a cutting device that can automatically remove foreign matter in the event of clogging.

The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

Means for Solving Problems] The detailed description of the invention disclosed in the present application is as follows.

The present invention includes at least one cutter group in which a plurality of rotary cutters are arranged at predetermined intervals along the axial direction of a rotary shaft;
A cutting processing device comprising a workpiece fall prevention member that fits with the cutter group in a portion other than the cutting processing section, and a rotary drive device capable of selectively rotating the rotary cutter group in a forward direction and a reverse direction. , an opening/closing device for the workpiece fall prevention member; a load state detection device for detecting the load state applied to the rotary cutter group; a discriminating device that temporarily reverses the rotary cutter group when the clogging is caused by a regular workpiece, and temporarily reverses the rotary cutter group when the clogging is caused by a foreign object; A control device for opening the member to prevent falling of the object to be treated is provided.

[Operation] According to the above-mentioned means, the load condition applied to the rotary cutter is detected by the load condition detection device, and the type of the clog is determined from the load condition by the discrimination device. Since the discrimination is automatically performed in this way, it becomes possible to perform a release process corresponding to the clogging of a regular object to be processed or a clogging of a foreign object.

That is, according to the above-mentioned means, the load state detecting device detects the load state applied to the rotary cutter group, and the discriminating device determines from the load state whether a foreign object is clogged or a regular workpiece is clogged. For example, in the case of clogging with foreign matter, the control device controls the rotary drive device, rotates the rotary cutter group in the opposite direction for a predetermined period of time, and then opens the workpiece fall prevention member. The clogged foreign matter is allowed to fall through the opening formed by this. As a result, the workpiece is dropped at a different location than the regular workpiece. On the other hand, if the regular workpiece is clogged, the rotary cutter group is temporarily reversed to relieve the jam and then the cutting process is performed again.

[Example] Hereinafter, an example of the cutting device of the present invention will be described with reference to the drawings.

FIG. 1 is a top sectional view of a cutting device according to a first embodiment of the present invention, and FIG. 2 is a functional block diagram showing the basic concept of this embodiment.

The first point in which the cutting processing apparatus of this embodiment differs from that of the conventional one (FIGS. 7 to 8) is that, as shown in FIG. A comb-like workpiece fall prevention member 30 that fits into the workpiece drop prevention member 30 can be opened and closed to create a predetermined gap between the rotary cutter group B and the box l, and a workpiece fall prevention member 30 that fits Opening/closing device 32 for opening/closing the member 30 for preventing falling of processed objects
are connected.

Specifically, a motor 32a capable of forward and reverse rotation is provided on the proximal end side of the member 30 for preventing fall of the object to be treated, although there is no particular restriction thereon.
The structure is such that the object fall prevention member 30 can be rotated by rotating the rotation shaft 34 of the object fall prevention member 30 via a deceleration mechanism (not shown). Note that the opening/closing device 32 here refers to the motor 3 that is the drive source.
It is used as a broad concept that includes not only the motor 2a but also a mechanism for transmitting power from the motor 32a to the rotating shaft.

With this configuration, when the rotary cutter groups A and B are reversed to remove a clogged foreign object, the first
In the figure, as shown by the broken line, the workpiece fall prevention member 30 is
By rotating the foreign object in the direction, the foreign object can be caused to fall in a direction Z different from the falling direction Y of the regular workpiece,
Foreign objects can be separated from regular objects.

The second difference between the cutting device of this embodiment and the conventional one is that, as shown in FIG.
a load state detection device 35 that detects the load state of the motor 11 that rotates the motor 11; a discrimination device 36 that discriminates the type of blockage in the rotary cutter based on the level of the load state; and a discrimination device 36 that controls the rotary drive device based on the discrimination result. This is because a control device 37 is provided for this purpose.

In FIG. 2, reference numeral 11 indicates a rotary cutter group A.

The reference numeral 35 representing the motor that rotates B is a load state detection device that detects the load state of the motor 11. For example, the load state detection device 35 detects a drive current 1 caused by the rotation of the motor 11.
Rotary cutter group A from the level of.

The magnitude of the load applied to B is detected. Further, reference numeral 36 is a discriminating device that discriminates the type of clogging of the rotary cutter based on the level of the load state. Reference numeral 37 indicates a rotary cutter group A according to the type of blockage based on the output from the discriminating device 36.
, B, and also controls a motor 32 that controls the opening and closing of the object fall prevention member 3o.

In the above, the load state detection device 35 detects the magnitude of the load applied to the rotary cutter groups A and B from the level of the drive current (2) accompanying the rotation of the motor 11. However, when the load is applied, the unit Rotary cutter group A per hour
, B decreases, the rotation speed may be used as a detection parameter for the load state.

FIG. 3 is a diagram showing an example of changes over time in the drive current of the motor 11 that rotates the rotary cutter groups A and B.

In the figure, 1. 11 indicates the drive current value when the rotary cutter groups A and B are rotated without a workpiece being loaded, that is, in a no-load state, and 11 indicates the drive current value when a regular workpiece is being cut. ing.

In addition, ■ indicates the current value for detecting the case where the workpiece becomes clogged while cutting the regular workpiece,
(2) indicates a current value for detecting a case where a hard foreign object other than the normal object to be processed is clogged. Note that ■4 indicates the rated current value of the motor, and the foreign object current value 1. From ■4,
It is set at a slightly lower level.

In this example, depending on how the drive current changes from the current value ■3 during normal cutting when an abnormality occurs, if the knot is tied while cutting a regular workpiece, the foreign material Determine if it is clogged.

When the regular workpiece (workpiece that can be cut) becomes clogged, the rotation of the rotary cutter groups A and B relatively slowly comes to a halt, and the motor drive current also gradually increases. Therefore, it is detected whether or not the motor drive current exceeds the current value I8, which is set as the value in the middle of the rising stage of the motor drive current. , B is temporarily reversed. After the blockage is cleared, the rotary cutter groups A and B are rotated in the normal direction again to perform the cutting process.

On the other hand, if a foreign object (an object that cannot be cut) becomes clogged, the rotation of the rotary cutter groups A and B immediately stops. Therefore, the motor drive current also rapidly increases to a value close to the rated current value. After that, the rise becomes gradual. Therefore, the rated current value 1. It is possible to detect whether or not the current value exceeds the current value set slightly lower than the current value . In this case, the motor drive current also exceeds the current value ■, halfway through, but the rise is so rapid that there is no time to detect that it has exceeded the current value ■, and the rotating cutter groups A and B reverse halfway. Therefore, the motor drive current jumps to nearly the rated current value of 14. Therefore, in this case, the rotary cutters A, B
is temporarily reversed, and the member 30 for preventing falling of the processed object is temporarily opened. As a result, the foreign matter is distinguished from the regular workpiece and removed.

That is, when the drive current value changes from 1 to 2 in an extremely short period of time (indicated by (B) in Figure 3), it is determined that there is a blockage due to foreign matter, and the drive current value changes from 1 to 2 in a very short period of time (indicated by (B) in Figure 3). When the change is gradual ((a) in Figure 3)
) is determined to have become clogged while cutting a regular workpiece. If the blockage is caused by a regular workpiece, processing is performed by simply reversing the rotary cutter groups A and B for a predetermined period of time, and if the blockage is caused by a foreign object, the rotary cutter group A is processed.
, B, and at the same time open the object fall prevention member 3o to cause the foreign object to fall to the lower side of the object fall prevention member 30.

FIG. 4 is a diagram showing an example of a flowchart of a control device that executes the processing. In the figure, step S1
When the cutting process is being performed in step S2, it is determined whether the drive current (2) exceeds the abnormal current value 11. When the abnormal current value I2 is not exceeded (NO in step S2), the cutting process in step S1 is repeated. If the abnormal current value exceeds 3 (Y in step S2)
ES), the process proceeds to step S3, and it is determined whether or not the drive current exceeds the foreign object current value 1. If it does not exceed the foreign object current value 1 (NO in step S3), it is determined that the object to be processed is clogged, and in step S4, the drive current is reversed for a predetermined period of time. After the rotation, the cutting process is restarted by rotating it in the original direction in step S6. As a result of this process, the clogged workpiece is inserted into the rotary cutter again at a new cutting angle and cut.

If the drive current I exceeds the foreign object current value I (YES in step S3), it is determined that a foreign object is clogged, and in step S5, the object fall prevention member 30 is rotated in the reverse direction for a predetermined period of time, and the object fall prevention member 30 is After the time has elapsed, the cutting process is restarted by rotating in the original direction in step S6. This process removes foreign objects from the rotary cutter and
Since the foreign matter falls to the lower side of the object fall prevention member 30,
It can be separated from the cut object.

FIG. 5 is a schematic sectional view of a second embodiment of the cutting device according to the present invention, and FIG. 6 is a plan view of the second embodiment of the cutting device.

This embodiment shows the case where the present invention is applied to a cutting processing device having three rotary cutter shafts.

First, the mechanical configuration of this embodiment will be explained.

5 and 6, the reference numeral 41 represents a box constituting the outer wall of the cutting device according to this embodiment. three rotating shafts 43,
44 and 45 are connected to the shaft 4 in parallel with each other and from above.
3. A shaft 44 and a shaft 45 are arranged adjacent to each other in this order.

The rotating shafts 43, 44, 45 have their boxes 41
A radially extending cutting surface 5a' is provided in the inwardly extending portion.
A disk 5 having a plurality of chevron-shaped blades 5a formed on its periphery and spacers 6 having a smaller diameter than the disk 5 are alternately fitted and fixed in the axial direction of the disk 5. , B, and C.

These rotary cutters A, B, and C are configured so that the thickness of the disk 5 is equal to the thickness of the spacer 6, and when attached to the box 41, the adjacent disks 5° 5 to the rotary cutter are The disc 5 of the rotary cutter B fits between them, and the adjacent discs 5 of the rotary cutter B,
A disc 5 of a rotary cutter C is fitted between the discs 5 and 5. In addition, in these rotary cutters A, B, and C, the rotary shafts are arranged such that the distance between the rotary shafts 43, 44, and 45 is half the sum of the outer diameter of the disk 5 and the outer diameter of the spacer 6. 43, 44, and 45 are positioned. As a result, when the rotary cutters A and B and B and C that fit into each other rotate, the cutting edge of the blade 5a of the disk 5 in one rotary cutter comes into contact with the outer peripheral surface of the spacer 6 in the other rotary cutter.

Also, the rotating shaft 4 extending outward from the box 41
3, 44. At one end of 45 are spur gears 48, which mesh with each other.
49.50 (not shown) are attached respectively. Furthermore, a rotating shaft 44 protrudes outward from the box 41.
A motor 11 is connected to the other end. The rotary cutter B is rotationally driven by this motor 11, and further, through spur gears 49, 48, 50, the rotary cutter A is rotated in the opposite direction to the rotary cutter B, and the rotary cutter C is rotated in the opposite direction to the rotary cutter B. It is designed to be rotationally driven in the direction of. In other words, the motor 11 and the spur gear 49°48.50 constitute a driving means.

Inside the box 41, on the side of the rotary cutter A on the side opposite to the fitting part of the rotary cutters A and B, one end is in contact with both the cutting edge of the blade 5a on the disk 5 and the spacer 6, and the other end is in the box 41. Fixed comb-like fixed blade 5
2 are arranged.

Further, on the side of the rotary cutter B on the box 41 side, there is a workpiece fall prevention device with one end in contact with both the cutting edge of the blade 5a on the disk 5 and the spacer 6, and the other end rotatably supported on the box 41. A member 53 is provided.

Further, on the side of the rotary cutter C on the box 41 side, one end is in contact with both the cutting edge of the blade 5a on the disk 5 and the spacer 6, and the other end is fixed to the box 41.
A comb-shaped fixed blade 54 is provided that slopes upward from the one end toward the fixed end. Also, rotating cutter B
One end is in contact with both the cutting edge of the blade 5a on the disk 5 and the spacer 6, and the other end is in the box 4.
A foreign matter guide blade 55 fixed to the foreign matter guide blade 55 is disposed, and a foreign matter storage case 56 connected to the foreign matter guide blade 55 is provided.

Further, a hopper 57 is attached to the earthen wall of the box 41, and the comb-shaped fixed blades 52, 54, the member 53 for preventing falling of the processed material and the hopper 55 constitute a guiding means.

The operation of the cutting device according to this embodiment having the above-mentioned configuration will be described below.

When the motor 11 is driven, the rotational force of its drive shaft is first
The signal is transmitted to the rotary shaft 44 to rotate the rotary cutter B, and is further transmitted to the rotary shaft 43.45 via spur gears 49, 48, 50 to rotate the rotary cutters A, C.
is driven to rotate.

At this time, as mentioned above, the rotary cutters A, B and B, C
The directions of rotation are opposite to each other.

Here, when the object to be processed is put into the hopper 57, the object to be processed is cut into the cutting surfaces 5a of the blades 5a and 5a of the rotary cutters A and B.
' , 5a', disk A.

B, and is cut into a predetermined size mainly by the shearing action of the blades 5a.

Further, the object to be processed is also cut by the interaction between the blade 5a and the spacer 6 facing it.

Due to the interaction of the rotary cutters A and B, the cut workpiece is discharged downward through the gap between the disk 5 and the spacer 6 formed by the rotation of the rotary cutters A and B, and then Due to the interaction of the rotary cutters B and C, cutting is performed again in the same manner as the cutting by the rotary cutters A and B described above.

In this way, rotary cutters A, B and rotary cutters B, C
The workpiece that has been cut sufficiently finely through the two cutting processes is then discharged from the cutting apparatus through the discharge port 60.

In this cutting process, if the object to be processed becomes clogged, the discrimination device 36 shown in FIG. A signal is issued, and the motor 11 is once stopped and then rotated in the opposite direction for a predetermined period of time. As a result, the clogged object to be processed is once pushed back upwards. As a result, the blockage is cleared. Then, after a predetermined period of time has elapsed, the motor 11 is rotated in the forward direction by a signal from the control device 37, and cutting of the object to be processed is attempted again.

Also, if foreign matter gets stuck between rotary cutters A and B,
The discrimination device 36 determines that there is a blockage due to foreign matter based on the level of the drive current, and the control device 37 disables the rotary drive device 38.
A control signal is issued, and the motor 11 is once stopped and then rotated in the opposite direction for a predetermined period of time, and the object falling prevention member 53 is rotated in the X direction in FIG. It is accommodated in 56. Note that the functional block configuration and processing flowchart of this embodiment can be the same as those shown in FIGS. 2 and 4, respectively. In the case of this embodiment, since the rotary cutter B is located below the rotary cutter A, objects clogged with the rotary cutters A and B will be reversibly rotated, thereby reliably preventing the workpiece from falling. Since it is transported to the member 53 side, there is an advantage that foreign matter can be reliably removed.

Although the invention made by the present inventor has been specifically explained based on Examples above, the present invention is not limited to the above Examples, and it should be noted that various changes can be made without departing from the gist of the invention. Not even.

For example, in the embodiment shown in FIG. 5, the comb-shaped fixed blade 54 tilted upward toward the fixed end is also used as a member to prevent the object from falling, so that the foreign object that has passed through the rotary cutters A and B is rotated. Cutter B.

If it is stuck between C, it can be handled in the same way.

Further, the operation of opening the member 30.54 for preventing the object from falling to be processed is not only driven by the motor 32a.
Any mechanical configuration may be used.

In addition, the present invention can distinguish the type of clog in the rotary cassette depending on the load level and change the removal process, so in addition to metal scraps, meat, wood, fruit, empty cans, bottles, plastics, etc. It is highly effective when processing a wide variety of objects, such as processing.

[Effects of the Invention] The effects obtained by typical inventions disclosed in this application are briefly explained below.

That is, according to the present invention, there are provided a load state detection device that detects the load state applied to a group of rotary cutters, and a discrimination device that determines from the load state whether the clogging of the workpiece is caused by a foreign object or a regular workpiece. By providing this, it is possible to perform a release process depending on the blockage. As a result, for example, it becomes possible to distinguish between clogging caused by a regular object and clogging caused by foreign matter, and perform clogging removal processing according to the discrimination.

In addition, if the workpiece is clogged with a regular workpiece, the rotary cutter group is temporarily reversed, and if the workpiece is clogged with a foreign object, the rotary cutter group is temporarily reversed, and the workpiece fall prevention member is released. By providing a control device that allows
It is possible to separate the regular workpiece from the foreign matter, and it is possible to completely remove the foreign matter from the cutting area without the need for a supervisor of the cutting equipment, thereby preventing damage to the motor and blade.

[Brief explanation of drawings]

FIG. 1 is a top sectional view of a first embodiment of the cutting device according to the present invention, FIG. 2 is a functional block diagram of the cutting device according to the first embodiment, and FIG. 3 is a rotating cutter. FIG. 4 is a diagram showing an example of a change in motor drive current over time, FIG. 4 is a diagram showing an example of a flowchart of a control device that executes processing according to the first embodiment, and FIG. 5 is a diagram showing an example of a cutting process according to the present invention. 2nd part of the device
6 is a plan view of the second embodiment of the cutting device according to the present invention, FIG. 7 is a schematic sectional view of the conventional cutting device, and FIG. FIG. 3 is a top cross-sectional view of the cutting device shown in the figure. II...Rotating cutter drive motor, 30.53...
- Workpiece fall prevention member, 32... Workpiece fall prevention member drive motor, 35... Load state detection device, 3
6... Discrimination device, 37... Control device, 38...
...Rotary drive device, A, B, C...Rotary cutter. Figure Figure Time Figure

Claims (1)

[Claims] At least one cutter group including a plurality of rotary cutters arranged at predetermined intervals along the axial direction of the rotating shaft, and a workpiece fall prevention member that fits with the cutter group at a portion other than the cutting processing section. In the cutting processing device, a rotary drive device capable of selectively rotating the rotary cutter group in a forward direction and a reverse direction, an opening/closing device for the workpiece fall prevention member, and a load state applied to the rotary cutter group are detected. a load state detection device, a discriminating device that determines from the load state whether the clogging of the workpiece is caused by a foreign object or a regular workpiece; A cutting processing device comprising: a control device that temporarily reverses the group, and, on the other hand, temporarily reverses the rotary cutter and opens the workpiece fall prevention member in the case of a foreign object.