JP2008260108A - Rotary blade for cutting and cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary blade for cutting and a cutting device capable of coping with ends of a large amount of workpieces at a time by cutting. <P>SOLUTION: This cutting device 10 is provided with a base 18 rotatably supported by a vertical frame 14. The base is provided with a surface plate 22 in the lower end of its front surface and a liftable and lowerable mount 30 in its upper part vertically movably along a lift guide 28. In the mount 30, a rotary shaft 34 is supported by a bearing 32, and the rotary blade 36 is attached to the rotary shaft 34. An air cylinder 40 is provided in the rear surface of the base 18, and the rod of the air cylinder 40 is connected to the mount 30 by an S-shaped connecting plate 48. Therefore, when the rod of the air cylinder 40 is displaced downward, the mount 30, that is, the rotary blade 36 is also lowered. As it is lowered, cutting blades formed in a plurality of blade sections provided with intervals in the circumferential direction of the rotary blade 36 are contacted with corner sections of the workpieces supported on the surface plate 22 successively. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cutting rotary blade and a cutting apparatus, and in particular, a novel cutting rotary blade and a cutting apparatus for cutting an edge of a workpiece (workpiece to be cut) placed on a surface plate, for example. About.

  For example, laminating is known in which paper is sealed (laminated) with a transparent plastic film. There is a demand for aligning the corners of this laminated film into a clean circle (rounded corner) without burrs. In order to perform such rounded corner processing, conventionally, the corner portions of a film laminated by 1 to 3 pieces are cut and processed. Therefore, there is a problem that workability is poor and there are variations in the finish.

On the other hand, Patent Document 1 discloses a film cutting device that can perform corner processing on a corner of a film. In the background art disclosed in Patent Document 1, since the film is cut using the first blade and the second blade that mesh with each other, if the shapes of the first and second blades are appropriately set, the film after cutting The corner can be rounded.
JP 2006-159394 [B26D 1/09 B26D 3/00 B31B 1/20]

  Since the background art of Patent Document 1 uses a cutting blade, a large amount of workpieces cannot be processed at one time, so that there is still a problem in workability.

  Therefore, a main object of the present invention is to provide a novel cutting rotary blade and a cutting apparatus capable of cutting an edge of a workpiece.

  Another object of the present invention is to provide a cutting rotary blade and a cutting apparatus capable of efficiently cutting an edge of a workpiece.

  The invention according to claim 1 is a rotary blade for cutting, which is attached to a rotary shaft, and has a plurality of blade portions extending in a circumferential direction and each extending parallel to a tangent, and a plurality of blade portions It is the rotary blade for cutting provided with the cutting blade effective in the width direction.

  According to the first aspect of the present invention, the rotary blade (36: reference numeral exemplarily showing a portion or element corresponding to the embodiment. The same applies hereinafter) is fixed to the rotary shaft (34). A plurality of blade portions (38) are formed at intervals in the circumferential direction of rotation. Each of the blade portions (38) is formed so as to extend in a direction parallel to the tangent line of the rotating circle, and a cutting blade (38a) having a shape suitable for a desired processing shape of the workpiece extends in the width direction of the rotating blade. Formed.

  According to the first aspect of the present invention, since the cutting blade hits the end edge (such as a corner) of the workpiece while the rotary blade rotates, the workpiece can be cut stably and efficiently.

  The invention of claim 2 comprises a rotating shaft, a displacement means for displacing the rotating shaft in a direction perpendicular to the axis of the rotating shaft, and a rotating blade attached to the rotating shaft, and the rotating blade has at least one blade portion. In addition, a cutting blade effective in the width direction of the rotary blade is formed in the blade portion, and the support of the workpiece is supported so that the cutting blade of the rotary blade displaced according to the displacement of the rotary shaft contacts the edge of the workpiece. And a cutting device comprising a movement preventing means for blocking the movement of the workpiece against the moving force applied to the workpiece when the cutting blade of the rotating blade contacts the workpiece and the rotating blade rotates. It is.

  In the invention of claim 2, the rotary shaft (34) is provided, and the rotary shaft (34) is rotated by a rotation driving means such as a motor (52). The rotating shaft (34) is also displaced in a direction perpendicular to the axis by the displacement means (30, 40, 42, 44, 48). When the rotary blade (36) is displaced, for example, when it is lowered, the cutting blade (38a) contacts the edge (64a) of the workpiece (64) supported by support means such as a surface plate (22). To do. Since the rotary blade (36) is rotated in a state where the cutting blade (38a) is in contact, the workpiece (64) tries to move by the force applied by the rotary blade. However, since the movement preventing means (24, 26) prevents the movement, the work piece (64) is positioned at a fixed position as a result, and in succession one after another according to the rotation of the rotary blade. It can be cut efficiently by the cutting blade (38a) that hits it.

  The invention according to claim 3 is the cutting apparatus according to claim 2, further comprising a bearing for supporting the rotating shaft and a driving means for driving the rotating shaft, and the displacing means displaces the bearing and the driving means together.

  In the invention of claim 3, the bearing (32) rotatably supports the rotating shaft (34). The rotating shaft is driven by, for example, a motor (52), and the displacing means displaces such a bearing and the driving means together.

  The invention of claim 4 further includes a base, the rotary blade is provided in front of the base, the displacement means is a displacement drive means provided at the rear of the base, and a displacement is driven by the displacement drive means. The cutting apparatus according to claim 3, further comprising a displacement transmission means for transmitting to the surface.

  In the invention of claim 4, the base (18) is provided, and the rotary blade (36) is arranged on the front side of the base (18). For example, the air cylinder (40) constituting the displacement driving means is arranged on the rear surface side of the base (18). For example, the S-shaped connecting plate (48) transmits the displacement force of the displacement driving means to the rotary blade as the displacement transmitting means.

  In the invention of claim 5, the rotary blade has a plurality of blade portions formed at intervals in the rotation circumferential direction, and an effective cutting blade is formed in each blade portion in the width direction of the rotary blade. A cutting apparatus according to any one of claims 2 to 4.

  In the invention of claim 5, since a plurality of cutting blades are provided at intervals in the rotation circumferential direction of the rotary blade, the work piece is cut with a plurality of cutting blades for each rotation of the rotary blade, so that the efficiency is high. .

  According to this invention, since the rotary blade is displaced and brought into contact with the workpiece, cutting can be performed accurately and efficiently.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

  A cutting apparatus 10 according to an embodiment of the present invention shown in FIGS. 1 to 4 includes a base 12, and a vertical frame 14 is provided upright on the base 12. A caster 16 for movement is attached to the lower surface of the base 12. Therefore, the cutting apparatus 10 of this embodiment can be moved to an arbitrary place.

  Although the vertical frame 14 is not illustrated in FIG. 1, its upper end has a U-shape (fork shape) that is spaced at regular intervals in the depth direction perpendicular to the paper surface, and a base 18 is fitted between the upper ends. . The base 18 is a flat plate and is attached to the vertical frame 14 by a shaft 20 so as to be rotatable. A surface plate 22 is attached to the lower front surface of the base 18 and serves as a support means for placing and supporting a workpiece 64 (described later).

  As a mechanism for rotating the base 18 with respect to the vertical frame 14, any mechanism can be used. As an example, for example, a handle as shown in FIG. 6 of Utility Model Registration No. 3070027 is disclosed. Therefore, a mechanism for changing the angle of the base 18 is suitable.

  On the surface plate 22, as can be seen particularly well from FIG. 4, an appropriate angle (in the embodiment, a right angle) is formed so as to be spaced apart from each other and the inner surfaces 24 a and 26 a viewed from above. Two abutting members 24 and 26 are provided. However, the contact members 24 and 26 are attached to the surface plate 22 so that their positions and angles can be changed on the surface plate 22 by an attachment mechanism (not shown). The inner surfaces 24a and 26a of the contact members 24 and 26 are in contact with the two sides of the workpiece sandwiching the corner, respectively, and the workpiece can be held on the surface plate 22. The abutting members 24 and 26 function as movement blocking means for blocking the movement of the workpiece 64, as will be described later.

  Two sets of elevating guides 28 are provided on the front surface of the base 18 so as to extend in the vertical direction with an interval in the width direction. Each elevating guide 28 is called a linear (guide) way, and includes a rail 28a having a rectangular cross section and a unit (outer cylinder) 28b having a "U" cross section fitting to the rail 28a. For example, a steel ball is interposed between the rail 28a and the unit 28b, and the unit 28b slides (moves) on the rail 28a by point contact with the steel ball. The rail 28a determines the movable length of the unit 28b. In this embodiment, the rail 28a has a length covering almost the entire length of the base 18, and is fixed to the front surface of the base 18. The unit 28b is considerably shorter than the rail 28a, and is fixed to the rear surface (back surface) of the lifting platform 30. Accordingly, the lifting platform 30 is supported by the lifting guide 28 so as to be movable in the vertical direction, that is, in a direction parallel to the main surface of the base 18.

  A bearing 32 is provided on the front surface of the lifting platform 30, and a rotating shaft 34 is rotatably supported by the bearing 32. A rotary blade 36 is fixed to one end of the rotary shaft 34. Therefore, the rotary blade 36 is rotated as the rotary shaft 34 rotates.

  As can be seen from FIG. 5, the rotary blade 36 has a plurality of (four in this embodiment) blade portions 38 provided at intervals in the circumferential direction (rotation direction). In the direction of arrow A. A cutting blade 38 a having a predetermined shape effective in the width direction (thickness direction) of the rotary blade 36 is formed on the blade portion 38. That is, the cutting blade 38 a is formed to extend in the width direction (thickness direction) of the rotary blade 36. The shape of the cutting blade 38a is formed so as to match the final shape of the processed part of the workpiece. In the embodiment, since the final shape is rounded, the cutting blade 38a has a concave shape having a gentle arc. The However, the radius (R) of the cutting blade 38a and the corner portion 64a of the workpiece 64 (FIG. 2: However, in FIG. 2, both radiuses are drawn in the same manner for convenience of illustration) may be the same. According to these experiments, the cutting process was better performed when the former was made slightly larger than the latter. For example, if the radius of the corner 64a is 3R, the radius of the cutting blade 38a is larger than that, for example, 5R.

  As shown in FIG. 5, the blade portion 38 is formed so as to extend in the tangential direction of the circle when the shape of the rotary peripheral side surface of the rotary blade 36 is a circle. Thereby, when the rotary blade 36 rotates, the cutting blade 38 a of the blade portion 38 comes into contact with the workpiece 64 at a right angle from the upper surface. At this time, the blade angle α (FIG. 5) of the cutting blade 38a is set to about 10 ° to 60 °, for example. If the blade angle α is too large, the cutting blade 38a will not bite into the workpiece 64, and the workpiece 64 will escape from the cutting blade 38a. If it is too small, the biting into the workpiece 64 will be too strong. Because it ends up.

  An air tube 42 of an air cylinder 40 which is an example of a displacement driving unit is fixed to the rear of the base 18 by an appropriate mounting unit. The air cylinder 40 is provided with a rod 44 that can be displaced from the lower end of the tube 42 in the axial direction of the tube 42. Therefore, when air is injected into the air tube 42 from a hose (not shown), the rod 44 protrudes downward from the lower end of the tube 42.

  The bottom plate 46a of the U-shaped metal fitting 46 is fixed to the tip of the rod 44 by an appropriate means such as screwing, for example, and S-shaped connecting plates 48 are respectively attached to the side plates 46b on both sides of the U-shaped metal fitting 46. For example, it is attached by appropriate means such as screwing. Each S-shaped connecting plate 48 has one vertical rod 48a and upper and lower rods 48b and 48c extending in the front-rear direction from the upper and lower ends thereof, and the lower rod 48b is a side plate 46a of the U-shaped metal fitting 46. It is fixed to. The upper flange 48c of the S-shaped connecting plate 48 is fixed to the side surface of the lifting platform 30 described above by appropriate means such as screwing. Therefore, the S-shaped connecting plate 46 functions as a connecting member for connecting the rod 44 of the air cylinder 40 and the lifting platform 30, and the lifting platform 30 is also moved in the vertical direction in accordance with the vertical displacement of the rod 44 of the air cylinder 40. Displace (up and down).

  As can be clearly understood from FIG. 2, the two S-shaped connecting plates 48 are arranged on both sides of the base 18 with the base 18 in between, and a hole through which the S-shaped connecting plate 48 penetrates the base 18. Alternatively, a slit may be formed so that the two S-shaped connecting plates 48 pass through the base 18 therethrough. In any case, the connecting member, that is, the S-shaped connecting plate 48 connects the lifting platform 30 in front of the base 18 and the cylinder rod 44 in the rear of the base 18 beyond the base 18.

  A timing pulley 50 is fixed to the other end of the shaft 34, and a timing belt 58 is stretched between the timing pulley 50 and a timing pulley 56 fixed to the motor shaft 54 of the motor 52. Therefore, when the motor 52 is driven, the rotation by the motor 52 is transmitted from the motor shaft 54 to the pulley 56, the belt 58, and the pulley 50 to rotate the rotating shaft 34. As a result, the motor 52 moves the rotary blade 36 to the arrow A (FIG. 3) Rotate in the direction. That is, the motor 52 constitutes a part of a rotation driving unit that rotates the rotary blade 36.

  As can be seen from FIG. 4 and the like, the motor 52 is attached by a mounting plate 60 on the rear surface of the base 18 and further behind the air cylinder 40. The mounting plate 60 is fixed to one (or both if necessary) of the above-described S-shaped connecting plate 48 by a suitable means such as screwing. As described above, the S-shaped connecting plate 48, that is, the lifting platform 30 is displaced in the vertical direction in accordance with the vertical displacement of the rod 44 of the cylinder 40, and the mounting plate 60 is accompanied by the displacement of the S-shaped connecting plate 48. The motor 52 attached to the motor is also displaced. Therefore, the air cylinder 40, the S-shaped connecting plate 48, and the like function as displacement means for moving the rotary shaft 34, that is, the rotary blade 36 up and down.

  As described above, the cutting blades 38a of the respective blade portions 38 of the rotary blade 36 must come into contact with the workpiece 64 placed on the surface plate 22 at a right angle. And an angle adjustment mechanism 62 for adjusting the angle (90 degrees) between the surface plate 22 and the surface plate 22 is incorporated.

  In the embodiment shown in FIGS. 1 to 4, when air is injected into one port of the air cylinder 40, the rod 44 is displaced downward. Accordingly, the lifting platform 30 connected to the rod 44 by the S-shaped connecting plate 48 is guided by the lifting guide 28 and moves downward. Therefore, the rotary blade 36 attached to the lifting platform 30 is lowered. On the other hand, the rotary blade 36 is rotated in the direction of arrow A in FIG. 3 by a lift 50 or a motor 50 that moves down with the rotary blade 36.

  When the rotary blade 36 is lowered, as shown in FIG. 6, the cutting blade 38a at the tip of each blade portion 38 is stacked on the surface plate 22, and is clamped and held by, for example, a clamper 65 as a pressing means. It hits the corner 64a. However, the clamper 65 may be connected to the rod 44 of the air cylinder 40 for raising and lowering the elevator 30 and lowered by the air cylinder 40 to a predetermined position. In this case, a foot switch operated by the operator's foot or a push button switch operated by hand (both not shown) can be operated in two stages, and the clamper 65 is lowered by the first operation, and the next operation (When stepped to the end), the rotary blade 36 (the lifting platform 30) is lowered. However, the clamper 65 and the lifting platform 30, that is, the rotary blade 36 may be individually lowered (displaced) by a different control method.

  When the cutting blade 38 a hits the corner 64 a of the workpiece 64, the rotary blade 36 is rotating at this time, so that the cutting blade 38 a moves in the direction of arrow B while the cutting blade 38 a contacts the workpiece 64. Accordingly, a force that moves in the direction of arrow B is applied to the workpiece 64, and the workpiece 64 is drawn toward the arrow B. Eventually, the two sides of the workpiece 64 sandwiching the corner 64a will come into contact with the inner surfaces 24a and 26a of the contact members 24 and 26, and the movement of the workpiece 64 in the arrow B direction 26 is blocked. This also applies to the workpieces 64 stacked and supported on the surface plate 22 as shown in FIG. That is, the workpiece 64 moves in the direction of arrow B until the movement of the rotating blade 36 is prevented by the contact members 24 and 26, but the two sides sandwiching the corner 64a contact the contact members 24 and 26. Then the movement is stopped. In other words, the contact members 24 and 26 block the movement of the workpiece 64 against the moving force applied to the workpiece 64 by the rotation of the rotary blade 36. Therefore, all the workpieces 64 are eventually cut by the respective cutting blades 38a of the rotary blade 36 at a fixed position and a fixed posture positioned by the contact members 24 and 26. The accuracy is good. In addition, since all the workpieces are similarly positioned and then cut, the workpieces can be stably machined in a state in which many workpieces are stacked.

  A more detailed description will be given with reference to FIGS. When the rotary blade 36 is displaced (lowered) and the cutting blade 38a hits the workpiece 64, the corner portion 64a of the workpiece 64 is pushed down and bent as shown in FIG. 7, and escapes from the cutting blade 38a. The bending (escape) of the corner portion occurs in the same manner when the stacked workpieces hit the cutting blade. On the other hand, as described above, since the radius of the cutting blade 38a is set to be larger than the final radius of the corner portion 64 of the workpiece 64, the cutting blade 38a has the corner portion 64a as shown in FIG. Go deeper from the edge. That is, since the cutting blade 38a descends in a state where it is covered with the edge of the corner portion 64 of the workpiece 64 (overlapping state), even if the corner portion 64a is bent as shown in FIG. Since it catches on the corner | angular part 64a, the corner | angular part 64a can be cut.

  Furthermore, since a plurality of blade portions 38, that is, cutting blades 38a are formed in the rotating circumferential direction on the rotary blade 36 of the embodiment, even if each cutting blade is little by little, these cutting blades 38a are successively moved to the workpiece. Since it strikes against the piece 64 and is scraped off, each workpiece 64 is finally cut.

  As described above, according to the cutting apparatus 10 of this embodiment, the workpiece 64 is cut while being pulled by the rotation of the rotary blade 36. Therefore, for example, a workpiece having a thickness different in the surface direction like a laminated film is used. Even if it exists, homogeneous cutting can be performed.

  In the above-described embodiment, in order to round the workpiece 64, the cutting blade 38a of the rotary blade 36 is formed in a concave shape having a gentle arc. However, the shape of the blade 38a is not limited to the shape of this embodiment, and may be formed in a linear shape as shown in FIG. 9, for example. When the rotary blade 36 shown in FIG. 9 is used, the corners of the workpiece 64 are cut linearly.

  In the previous embodiment, the rotary blade 36 has been described as having four blade portions 38 extending in the tangential direction. However, the number of the blade portions 38 may be arbitrary as long as it is two or more. For example, five blade portions 38 may be formed as shown in FIG.

  Furthermore, in the above description, it has been explained that the embodiment shown in FIGS. 1 to 4 can be processed efficiently and accurately when a plurality of workpieces such as pouch sheets are stacked and processed. As shown in FIG. 10, the cutting apparatus 10 of the example can cut the edge, for example, the corner 64Aa even if the workpiece 64A is made of a relatively thick synthetic resin such as an acrylic plate. .

  Conventionally, in order to round such a thick plate, a method of polishing with a grindstone or the like has been generally used. However, this method is not only large in size but also inefficient. On the other hand, according to the cutting apparatus 10 as in the embodiment, the cutting blades 38a of the plurality of blade portions 38 formed in the circumferential direction of the rotary blade 36 scrape the workpiece one after another, so that the efficiency is high. In addition, as described above, since the workpiece 64A is cut at a fixed position while the workpiece 64A is in contact with the contact members 24 and 26 by the rotation of the rotary blade 36, the cutting position of the cutting blade of each blade portion varies. Instead, the same position of the workpiece is cut with each blade that is fed out sequentially, and even a thick plate can be finished cleanly.

  Furthermore, in the above-described embodiment, the case where the corner portion 64a (64Aa) of the workpiece 64 (64A) is cut has been described. However, in the embodiment shown in FIGS. 1 to 4, the workpiece can be cut into any shape at any position as long as the edge of the workpiece.

  In the example of cutting shown in FIG. 11, a protruding cutting blade 38aA is formed on the rotary blade 36A, and a cut (notch) is formed on the side edge 64Ba of the workpiece 64B with the cutting blade 38aA. To do. In this case, if the contact members 24A and 26A are L-shaped so as to simultaneously contact two sides of the workpiece 64B, in combination with the pulling force in the arrow B direction by the rotary blade 36, The workpiece 64B can be held more securely. Also in this embodiment, a V-shaped cut can be formed on the edge 64Ba by intermittent cutting using the blades 38aA.

  Further, in the embodiment, the air cylinder 40 is used as the displacement driving means. However, the present invention is not limited to this, and other fluid actuators may be used, and a mechanism for converting rotation into a straight line may be used. is there.

  Furthermore, in the above-described embodiments, the rotary blade has been described as having a plurality of blade portions, that is, cutting blades, spaced in the circumferential direction. Providing a plurality of cutting blades has the advantage of increasing the cutting efficiency because the workpiece is cut a plurality of times during one rotation of the rotary blade, but this invention has only one cutting blade in the circumferential direction of rotation. The case where it is provided is not excluded.

FIG. 1 is an illustrative view showing one embodiment of the present invention. FIG. 2 is a partially omitted schematic view of the embodiment shown in FIG. FIG. 3 is a partially omitted schematic view of the embodiment of FIG. 1 viewed from the front (side). FIG. 4 is an illustrative view showing in detail the main part of the embodiment of FIG. 5 is an illustrative view showing an example of a rotary blade used in the embodiment of FIG. 1, FIG. 5 (A) is a view seen from the side, and FIG. 5 (B) is a view seen from above. FIG. 6 is an illustrative view showing a state in which the workpiece is cut in the embodiment of FIG. 1. FIG. 7 is an illustrative view showing that a corner portion of the workpiece is bent when the workpiece is cut in the embodiment of FIG. 1. FIG. 8 is an illustrative view showing that when the workpiece is cut in the embodiment of FIG. 1, the cutting blade hits the back by setting the radius of the cutting blade larger than the radius of the final shape of the corner of the workpiece. . 9 is an illustrative view showing another example of the rotary blade used in the embodiment of FIG. 1, FIG. 9 (A) is a view seen from the side, and FIG. 9 (B) is a view seen from above. FIG. 10 is an illustrative view showing another example of a state in which the workpiece is cut in the embodiment of FIG. 1. FIG. 11 is an illustrative view showing still another example of the state in which the workpiece is cut in the embodiment of FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Cutting apparatus 18 ... Base 22 ... Surface plate 24, 26 ... Contact member 28 ... Elevating guide 30 ... Elevating stand 34 ... Rotating shaft 36 ... Rotating blade 38 ... Blade 38a ... Cutting blade 40 ... Air cylinder 44 ... Cylinder Rod 48 ... S-shaped connecting plate 50, 56 ... Timing pulley 52 ... Motor 58 ... Timing belt 64, 64A, 64B ... Workpieces 64a, 64Aa ... Corner 64ba ... Edge

Claims (5)

A rotary blade for cutting that is attached to a rotary shaft,
A cutting rotary blade comprising a plurality of blade portions that are spaced apart in the circumferential direction and each extending parallel to a tangent, and a cutting blade that is formed on each of the plurality of blade portions and is effective in the width direction. Axis of rotation,
Displacement means for displacing the rotary shaft in a direction perpendicular to the axis of the rotary shaft, and a rotary blade attached to the rotary shaft, the rotary blade has at least one blade portion, and the blade portion includes An effective cutting blade is formed in the width direction of the rotary blade, and further the support means for supporting the workpiece so that the cutting blade of the rotary blade displaced according to the displacement of the rotary shaft contacts the edge of the workpiece. And a movement preventing means for preventing the movement of the workpiece against the moving force applied to the workpiece when the cutting blade of the rotating blade contacts the workpiece and the rotating blade rotates. A cutting device provided.   The cutting apparatus according to claim 2, further comprising a bearing that supports the rotating shaft and a driving unit that drives the rotating shaft, wherein the displacing unit displaces the bearing and the driving unit together. Further equipped with a base,
The rotary blade is provided in front of the base;
The cutting apparatus according to claim 3, wherein the displacement means includes a displacement drive means provided behind the base, and a displacement transmission means for transmitting displacement by the displacement drive means to the rotation shaft.   The said rotary blade has a some blade part formed at intervals in the rotation circumferential direction, and the cutting blade effective in the width direction of the said rotary blade is formed in each blade part. The cutting apparatus according to any one of the above.

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