JP6482522B2 - End face cutting apparatus and end face cutting method - Google Patents

Description

  The present invention relates to an end face cutting apparatus and an end face cutting method.

Conventionally, a sheet such as a polarizing plate is formed by cutting a sheet-like sheet into a predetermined shape and size one by one with a rotary blade having a blade portion on the outer periphery, and is used for various applications.
In many cases, the end face of the sheet formed by such cutting is rough due to the occurrence of crusting or the adhesive sticking out, so the end face of the sheet is cut to remove these. End face cutting devices have been proposed.

  For example, a rotating body portion that has a rotating shaft and rotates around the rotating shaft, and a cutting portion that is fixed to one surface of the rotating body portion and that cuts end surfaces of the stacked sheets, The cutting part has a fixing part fixed to the rotating body part, and a cutting blade part protruding from the fixing part toward the end surface of the sheet, and the cutting blade part is downstream in the rotation direction of the rotating body part. An end face cutting apparatus having a cutting edge that cuts the end face at the end of the head has been proposed (see Patent Document 1). In this end face cutting apparatus, the cutting edge is formed along a direction orthogonal to the side surface portion of the cutting blade portion, and the downstream side in the rotation direction of the cutting portion (that is, the cutting blade portion) is positioned on the rotating shaft side. In addition, since the entire cutting portion is inclined, the cutting edge is inclined to the downstream side in the rotation direction with respect to a virtual straight line passing through the rotating shaft and the end of the cutting edge on the rotating shaft side.

  According to such a cutting apparatus, the cutting edge of the laminated sheets is suppressed while suppressing the cracks (cracks) and delaminations (peeling) of the sheets by tilting the cutting edge with respect to the virtual straight line toward the downstream side in the rotation method direction. The end face can be subjected to end face cutting.

JP 2011-93086 A

  However, in the end face cutting apparatus described in Patent Document 1, when the cutting part rotates with the rotating body part, a load is applied to the cutting edge of the cutting part, and the cutting edge may be consumed quickly.

  In view of the above circumstances, an object of the present invention is to provide an end face cutting apparatus and an end face cutting method that can suppress wear of a cutting portion.

An end face cutting apparatus according to the present invention is as follows.
An end face cutting device for cutting the end face of a laminated sheet,
A rotating body portion having a rotating shaft and rotating about the rotating shaft center;
A cutting portion disposed on one surface of the rotating body portion and cutting the end surface;
The cutting portion has a cutting blade portion protruding from the rotating body portion toward the end surface,
The cutting blade portion has a cutting edge for cutting the end face at an end portion on the downstream side in the rotation direction of the rotating body portion,
The cutting edge is configured to be inclined upstream in the rotation direction with respect to a virtual straight line passing through the rotation shaft and the end of the cutting edge on the rotation shaft side.

  According to such a configuration, since the cutting edge is inclined upstream in the rotation direction with respect to the virtual straight line, the load applied to the cutting edge when cutting the end face can be reduced, so that consumption of the cutting portion is suppressed. obtain.

In the end face cutting device of the above configuration,
It is preferable that the angle at which the cutting edge is inclined with respect to the virtual straight line is 5 to 40 °.

When the angle is 5 ° or more, the wear of the blade edge can be sufficiently suppressed.
On the other hand, if the inclination is too large, the cutting force toward the end face direction of the stacked sheets is too large than the force toward the direction perpendicular to the end face direction, which causes the stacked sheets to deviate from each other. As a result, a sheet out of a desired dimension may be formed.
If an attempt is made to hold the stacked sheets strongly in order to suppress this shift, the sheets may be damaged.
However, when the angle is 40 ° or less, the stacked sheets can be prevented from shifting, and therefore, the end face cutting can be performed more sufficiently.

The end face cutting method according to the present invention is:
An end face cutting method for cutting end faces of laminated sheets,
The end surface of the sheet is cut by the cutting edge of the rotating cutting unit while the cutting unit is rotated by rotating the rotating body unit about the rotation axis using the end surface cutting apparatus. It is a method of processing.

  According to such a configuration, it is possible to suppress wear of the cutting portion as described above by performing end face cutting using the end face cutting apparatus.

  As described above, according to the present invention, there are provided an end face cutting apparatus and an end face cutting method capable of suppressing wear of a cutting portion.

The schematic side view which shows the end surface cutting apparatus which concerns on embodiment of this invention. FIG. 1 is a schematic plan view of the periphery of the rotating body portion and the cutting blade portion of the end face cutting apparatus of FIG. The schematic front view which shows the cutting blade part with which the end surface cutting apparatus of FIG. 2 was equipped The schematic side view which looked at the state which the cutting blade part of FIG. 3 is cutting the end surface of a sheet | seat from the right side of FIG. The schematic plan view which shows the direction of the force applied to the end surface of a sheet | seat by the blade edge of the cutting blade part of FIG. The schematic plan view which shows the rotary body part and cutting blade part periphery of the end surface cutting apparatus of another aspect of this embodiment. The schematic front view which shows the cutting blade part with which the end surface cutting apparatus of FIG. 6 was equipped. Schematic side view of the cutting blade part of FIG. 7 viewed from the right side of FIG. The schematic plan view which shows the state by which the conventional cutting blade part was distribute | arranged to the rotary body part Schematic plan view showing the direction of the force applied to the end face of the sheet by the cutting edge of a conventional cutting blade The schematic plan view which shows the state by which the conventional cutting blade part was arranged at the rotary body part Schematic plan view showing the direction of the force applied to the end face of the sheet by the cutting edge of a conventional cutting blade

  Hereinafter, an end face cutting apparatus according to an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the end surface cutting apparatus 1 of the present embodiment is
An end face cutting device 1 for cutting an end face 50a of a laminated sheet 50,
A rotating body 11 having a rotation axis R and rotating about the rotation axis R;
A cutting part 21 disposed on one surface 11a of the rotating body part 11 and cutting the end face 50a;
The cutting part 21 has a cutting blade part 25 protruding from the rotating body part 11 toward the end surface 50a,
The cutting blade portion 25 has a cutting edge 27 that cuts the end surface 50a at an end portion on the downstream side in the rotation direction M of the rotating body portion 11;
The cutting edge 27 is configured to be inclined upstream in the rotational direction M with respect to a virtual straight line L1 passing through the rotation axis R and the end 27a of the cutting edge 27 on the rotation axis R side. .
The end surface cutting apparatus 1 can rotate the rotating body portion 11 and can rotate the rotating body portion 11, and the supporting portion 31 is movable so that the supporting cutting portion 21 cuts the entire end surface 50 a. It further includes a driving unit 33 for driving, and a holding unit 35 that holds the stacked sheets 50 sandwiched from the lowermost surface side and the uppermost surface side.

Although the sheet | seat 50 is not specifically limited, For example, a polarizing plate is mentioned. As this polarizing plate, what laminated | stacked the polarizer and the protective film through the adhesive is mentioned.
The shape of the sheet 50 is, for example, a rectangular shape.
The number of sheets 50 to be laminated is not particularly limited.

The rotating body portion 11 applies cutting force to the cutting edge 27 of the cutting blade portion 25 of the cutting portion 21 by rotating.
The shape, material, size, etc. of the rotating body 11 are not particularly limited.
For example, the shape of the rotating body portion 11 is a disk shape, and the rotating body portion 11 is formed of a metal material such as stainless steel.
The magnitude | size of the rotary body part 11 can be suitably set according to the quantity etc. of the sheet | seat 50 laminated | stacked.
The rotating body portion 11 is configured to be movable in the direction of the rotation axis R and the direction perpendicular to the rotation axis R as the support portion 31 moves.
The rotating body portion 11 is rotatably supported on a support shaft 32 disposed on the support portion 31.

The quantity of the rotating body part 11 is not specifically limited. Even if one rotating body portion 11 is provided so that one end face 50a of the stacked sheets 50 can be cut, two opposite end faces 50a are provided so as to be cut at a time. Also good.
Although the rotational speed of the rotary body part 11 is not specifically limited, For example, it may be 1000-6000 rpm.

The cutting part 21 is arranged on one surface 11a of the rotating body part 11 and cuts the end face 50a.
1 and 2 show a mode in which six cutting parts 21 are arranged on the rotating body part 11, the number of cutting parts 21 arranged on the rotating body part 11 is not particularly limited.

  The cutting part 21 has the cutting blade part 25 which protrudes from the rotary body part 11 toward the end surface 50a.

The cutting blade part 25 cuts the end surface 50a of the laminated sheets 50.
The cutting blade portion 25 protrudes from the rotating body portion 11 toward the end surface 50 a, and has a cutting edge 27 at an end portion on the downstream side in the rotation direction M of the rotating body portion 11.
The cutting blade portion 25 is formed in a rectangular shape when viewed along the extending direction of the rotation axis R, and has a side surface portion 25a on the rotation axis R side and a side surface portion 25b on the side away from the rotation axis R. doing.
The cutting blade portion 25 is disposed on one surface 11a of the rotating body portion 11 along the direction P perpendicular to the virtual straight line L1.
The blade edge 27 is formed so as to cut the end surface 50 a of the stacked sheets 50.
The cutting edge 27 is inclined with respect to a direction N orthogonal to the side surface portion 25 a of the cutting blade portion 25.

Although angle (theta) 1 which the blade edge | tip 27 makes with respect to the virtual straight line L1 is not specifically limited, 5-40 degrees is preferable and 5-25 degrees is more preferable.
When the angle is 5 ° or more, the stress received from the stacked sheets 50 can be sufficiently reduced, so that consumption of the cutting edge 27 can be suppressed.
On the other hand, if the inclination angle is too large, the cutting force toward the end face direction of the stacked sheets 50 becomes too large than the force toward the direction perpendicular to the end face direction, and the stacked sheets may be displaced. There is.
If an attempt is made to hold the stacked sheets strongly in order to suppress this shift, the sheets may be damaged.
However, when the angle is 40 ° or less, the stacked sheets can be prevented from shifting, and therefore, the end face cutting can be performed more sufficiently.

The material of the cutting blade part 25 is not specifically limited. Examples of the material include carbon steel (S45C).
The material of the blade edge 27 is not particularly limited as long as the end face 50a can be cut. For example, the cutting edge 27 may have a diamond crystal layer laminated on the surface of carbon steel (S45C). Examples of the particle diameter of the diamond particles include 5 to 50 μm.

The shape of the blade edge 27 is not particularly limited. For example, the cutting edge 27 may be linear or curved so as to protrude toward the downstream side in the rotation direction when viewed along the extending direction of the rotation axis R.
In the case of bending, the radius of curvature is preferably 1 to 50% with respect to the distance connecting the rotation axis R and the end 27a on the rotation axis R side of the cutting edge 27 in the shortest distance.

In the present embodiment, the cutting blade portion 25 has inclined portions 26 a and 26 b that are inclined in a direction away from the end surface 50 a from the blade edge 27 toward the end opposite to the blade edge 27.
By having the inclined portions 26a and 26b in the cutting blade portion 25, the cutting blade portion 25 can be further suppressed from coming into contact with the uncut region of the end face 50a.
Of the inclined portions 26a and 26b, the inclination angle of the inclined portion 26a closest to the cutting edge 27 (the first forward relief angle and the angle formed with respect to the virtual plane including the rotation direction M) θ2 is, for example, 0 ° And 15 ° or less (0 ° <θ2 ≦ 15 °).
The inclination angle of the inclined portion 26b (the second front relief angle and the angle formed with respect to the virtual plane including the rotation direction M) can be set as appropriate.
Further, the inclination angle (rake angle) of the cutting edge 27 with respect to the virtual plane including the rotation direction M can be set to be more than 0 ° and 20 ° or less (0 ° <rake angle ≦ 20 °).
In the present invention, a mode in which the cutting blade portion 25 does not have the inclined portions 26a and 26b may be employed.

  Here, for example, when the cutting edge 27 is arranged along the imaginary straight line L1 as in the conventional end face cutting apparatus shown in FIG. 9, as shown in FIG. 10, it is perpendicular to the end face direction of the sheet 50. The cutting force F is applied from the cutting edge 27 in a proper direction (stacking direction). In addition, a cutting force is uniformly applied from the cutting edge 27 to the stacked sheets 50. As a result, since the cutting force is uniformly applied to the sheets 50 stacked from the blade edge 27 in the direction in which the sheets 50 are separated from each other, the sheets 50 may be cracked or delaminated.

  On the other hand, for example, when the cutting edge 27 is inclined to the downstream side in the rotation direction M with respect to the virtual straight line L1, as in the conventional end surface cutting apparatus shown in FIG. 11, that is, on the rotation axis R side of the cutting edge 27. When the end portion 27b on the opposite side of the rotation axis R from the end portion 27a is inclined so as to be located on the downstream side in the rotation direction M, as shown in FIG. Cutting force (pressing force) is applied so as to pierce in order from the end portion 27b on the opposite side to R to the end portion 27a on the rotating shaft R side (from the outside to the inside). In this case, the occurrence of cracks and delamination in the sheet 50 can be suppressed. However, on the other hand, since the cutting edge 27 applies a large force locally to the sheet 50, the cutting edge 27 receives a large stress (load) from the sheet 50, so that wear increases.

  On the other hand, in this embodiment, the cutting edge 27 is inclined to the upstream side in the rotation direction M with respect to the virtual straight line L1, so that the cutting edge 27 rotates on the stacked sheets 50 as shown in FIG. Cutting force is applied in the direction of pulling in order from the end portion 27a on the axis R side to the end portion 27b on the side opposite to the rotation axis R. In this case, the cutting force (pressing force) applied to the sheets 50 stacked from the blade edge 27 is smaller than when the blade edge 27 is inclined downstream with respect to the virtual straight line L1, and the blade edge 27 is correspondingly reduced. Since the stress (load) received from the sheet 50 is reduced, wear is reduced. Therefore, according to the cutting part 21 of this embodiment, it can suppress that a crack and delamination generate | occur | produce in the sheet | seat 50 rather than the case shown in FIG.9 and FIG.10, and it shows in FIG.11 and FIG.12. It is possible to suppress the sheet displacement more than the case.

The support portion 31 is configured to be movable in a direction parallel to a plane including the rotation direction of the rotating body portion 11 and in a direction perpendicular to the plane. For example, it is moved by a conventionally known moving device.
As the support portion 31 moves in the vertical direction, the cutting depth with respect to the end surface 50a of the blade edge 27 is adjusted, and by moving in the parallel direction, the entire end surface 50a is cut from one end to the other end. It is configured.

The drive unit 33 rotates the rotating body unit 11. An example of the drive unit 33 is a motor.
The holding unit 35 holds the stacked sheets 50 sandwiched from the lowermost surface side and the uppermost surface side. The holding portion 35 includes a first portion 35a that contacts the uppermost surface of the stacked sheets 50, and a second portion 35b that contacts the lowermost surface, and the first and second portions 35a and 35b By being sandwiched, the stacked sheets 50 are held. The holding portion 35 is configured to rotate around a virtual straight line L2 that connects the center of the lowermost surface of the sheet 50 and the center of the uppermost surface, whereby an end surface 50a to be processed on the end surface of the stacked sheets 50 is formed. It can be changed.

In the embodiment shown in FIGS. 1 and 2, the cutting blade portion 25 is formed integrally with the rotating body portion 11, but may be formed separately from the rotating body portion 11.
For example, the cutting part 21 further includes a fixing part 23 that fixes the cutting blade part 25 to the rotating body part 11, and the aspect in which the cutting blade part 25 is fixed to the rotating body part 11 via the fixing part 23 is also adopted. obtain.

Specifically, as shown in FIG. 6, the rotating body portion 11 has a recess 12 that is recessed from the outer peripheral edge of the rotating body portion 11 so that the cutting portion 21 fits snugly. Yes.
The cutting part 21 includes a fixing part 23 fixed to the rotating body part 11 and a cutting blade part 25 protruding from the fixing part 23 toward the end surface 50a.
The fixed portion 23 extends along a direction P perpendicular to an imaginary straight line L1 that passes through the rotation axis R and the end portion 27a of the cutting edge 27 on the rotation axis R side.
The fixed portion 23 is formed in a rectangular shape when viewed along the extending direction of the rotation axis R.
For example, the fixing portion 23 is fitted into and fixed to the concave portion 12 formed in the rotating body portion 11. In the aspect of FIG. 6, the rotating body portion 11 is configured to be fitted into a recess 12 formed so as to be recessed inward from the outer periphery, and fixed by a fixing member 23 a such as a screw.

The cutting blade portion 25 protrudes from the fixed portion 23 to the side opposite to the rotating body portion 11 and has a cutting edge 27 at the tip portion.
The cutting blade portion 25 has a blade edge 27 at an end portion on the downstream side in the rotation direction M of the rotating body portion 11.
The cutting blade portion 25 is formed in a rectangular shape when viewed along the extending direction of the rotation axis R, and has a side surface portion 25a on the rotation axis R side and a side surface portion 25b on the side away from the rotation axis R. doing.
The cutting edge 27 is inclined with respect to a direction N orthogonal to the side surface portion 25 a of the cutting blade portion 25.

The cutting blade portion 25 may be formed integrally with the fixed portion 23 or may be formed separately from the fixed portion 23.
The material of the fixing part 23 is not particularly limited. As the material thereof, for example, the same material as that of the cutting blade portion 25 is used.

The cutting blade portion (that is, the cutting portion 21) is arranged on the rotating body portion 11 in a state where the cutting edge 27 is inclined as described above with respect to the side surface portion 25a and the cutting portion 21 is fixed to the fixing portion 23. The cutting edge 27 is inclined upstream in the rotation direction M with respect to the virtual straight line L1 (the end 27a on the rotation axis R side is more in the rotation direction M than the end 27b on the opposite side to the rotation axis R). As long as it is inclined so as to be located on the downstream side).
For example, as shown in FIG. 6, the cutting part 21 may be arranged along the direction P perpendicular to the virtual straight line L <b> 1 on the one surface 11 a of the rotating body part 11. In addition, although not shown, the upstream end in the rotational direction M is inclined with respect to the direction P perpendicular to the virtual straight line L1 so that it is closer to the rotational axis R side than the downstream end. Alternatively, the end portion on the downstream side in the rotation direction M with respect to the direction P perpendicular to the virtual straight line L1 may be inclined so as to be farther from the rotation axis R side than the end portion on the upstream side.

Next, the operation of the end surface cutting apparatus 1 of the present embodiment will be described.
When the rotating body portion 11 is rotated by the drive portion 33 while the support portion 31 is moved, the cutting portion 21 extends from one end to the other end of each end surface 50a of the stacked sheets 50 (laminated body 60). Is cut by the cutting edge 27 of the cutting blade portion 25.

As described above, the end surface cutting apparatus 1 of the present embodiment is
An end face cutting device 1 for cutting an end face 50a of a laminated sheet 50,
A rotating body 11 having a rotation axis R and rotating about the rotation axis R;
A cutting part 21 disposed on one surface 11a of the rotating body part 11 and cutting the end face 50a;
The cutting part 21 has a cutting blade part 25 protruding from the rotating body part 11 toward the end surface 50a,
The cutting blade portion 25 has a cutting edge 27 that cuts the end surface 50a at an end portion on the downstream side in the rotation direction M of the rotating body portion 11;
The cutting edge 27 is configured to be inclined upstream in the rotational direction M with respect to a virtual straight line L1 passing through the rotation axis R and the end 27a of the cutting edge 27 on the rotation axis R side. .

  According to the end face cutting apparatus 1 of the present embodiment, the load applied to the cutting edge 27 when cutting the end face 50a because the cutting edge 27 is inclined upstream in the rotational direction M with respect to the virtual straight line L1. Therefore, the consumption of the cutting edge 27 can be suppressed.

In the end face cutting device 1 of the present embodiment,
It is preferable that the angle at which the blade edge 27 is inclined with respect to the virtual straight line L1 is 5 to 40 °.
When the angle is 5 ° or more, consumption can be sufficiently suppressed.
On the other hand, if the inclination is too large, the cutting force in the end face direction of the stacked sheets 50 becomes too large than the cutting force in the direction perpendicular to the end face direction, thereby causing the stacked sheets 50 to deviate from each other. As a result, there is a possibility that the sheet 50 deviating from a desired dimension is formed.
If the stacked sheets 50 are strongly held by the holding unit 35 in order to suppress this shift, the sheets 50 may be damaged.
However, since the sheet 50 can be prevented from shifting when the angle is 40 ° or less, the end face cutting can be performed more sufficiently.

The end face cutting method according to this embodiment is
An end face cutting method for cutting the end face 50a of the laminated sheets 50,
The cutting edge 21 of the cutting part 21 that rotates while rotating the cutting part 21 by rotating the rotating body part 11 about the rotation axis R using the end face cutting device 1, An end face cutting method for cutting the end face 50a of the sheet 50.

  According to this configuration, by performing end face cutting using the end face cutting apparatus 1, it is possible to suppress wear of the cutting portion 21 as described above.

  As described above, according to the present embodiment, the end surface cutting apparatus 1 capable of suppressing the wear of the cutting portion 21 is provided.

  EXAMPLES Next, although an Example demonstrates this invention further, this invention is not limited to an Example.

Example 1
As the sheet 50, a protective film is laminated on both sides of the polarizer via an adhesive layer, a surface protective film is laminated on one protective film via an adhesive layer, and an adhesive layer is interposed on the other protective film. A polarizing plate (surface protective film / adhesive layer / protective film / adhesive layer / polarizer / adhesive layer / protective film / adhesive layer / separator) formed by laminating a separator was used.
Using the end face cutting apparatus 1 shown in FIG. 1, only one cutting part 21 is arranged on the rotating body part 11, 200 sheets 50 are stacked and held by the holding part 35, and rotated about the virtual straight line L <b> 1. The inclination angle θ1 of the cutting edge 27 inclined to the upstream side in the direction M with respect to the virtual straight line L1 was changed as shown in Table 1, and the end face 50a was cut.
The diameter of the rotating body 11 was 180 mm, the number of cutting parts 21 was three, and the following conditions were set.
・ Clamping pressure of holding part: 0.2MPa
-Clamp height (corresponding to the thickness (height) of the laminate of sheets): 80 mm
-Moving speed of the support part 31: 600 mm / min
・ Rotating speed of the rotating body 11: 6000 rpm
・ Cutting position: Set so that the center of the rotating body is positioned at the center of the stack of sheets ・ Arrangement of the stack of sheets: Set so that the separator side is positioned above

And the end surface cutting process of 200 laminated bodies was repeated, the driving | operation for 14 hours a day was performed, and the number of days until the blade edge 27 of the cutting part 21 was consumed and the cutting part 21 was replaced | exchanged was investigated.
The results are shown in Table 1.

(Comparative Example 1)
Except for using the cutting edge 27 that is inclined to the downstream side in the rotation direction M with respect to the virtual straight line L1 (see FIGS. 11 and 12) and changing the inclination angle as shown in Table 1, the same as in Example 1. Then, end face cutting was performed, and the number of days until the cutting part 21 was replaced was examined.
The results are shown in Table 1.

  As shown in Table 1, it was found that in Example 1, wear of the cutting edge 27 of the cutting portion 21 was suppressed compared to Comparative Example 1.

(Example 2)
In the same manner as in Example 1, the end face cutting of the laminate 60 of 200 sheets 50 was performed 5 times, and it was examined whether or not it was within a desired processing accuracy range. As processing accuracy, ± 0.05 mm was adopted.
Of the five times, the number of times (success times) within the range of the desired processing accuracy was examined. Specifically, in one end (200 sheets) end face processing, when all 200 sheets were within the range of the desired processing accuracy, it was considered successful. That is, if one of the 200 sheets is out of the range of the desired processing accuracy, it is determined as a failure.
The results are shown in Table 2.

  As shown in Table 2, it was found that the cutting accuracy is relatively improved when the inclination angle is 40 ° or less, and in particular, the cutting accuracy is further improved when the inclination angle is 25 ° or less.

  As described above, the embodiments and examples of the present invention have been described, but it is also planned from the beginning to appropriately combine the features of the embodiments and examples. The embodiments and examples disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the embodiments and examples described above but by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

  1: End face cutting device, 11: Rotating body part, 21: Cutting part, 25: Cutting blade part, 27: Cutting edge, 50: Sheet, 50a: End face

Claims (4)

An end face cutting apparatus for cutting an end face of a laminate formed by laminating sheets,
A rotating body portion having a rotating shaft and rotating about the rotating shaft center;
A cutting portion disposed on one surface of the rotating body portion and cutting the end surface;
The cutting part has a fixed part fixed to the rotating body part, and a cutting blade part protruding from the fixed part toward the end surface,
The cutting blade portion has a cutting edge for cutting the end face at an end portion on the downstream side in the rotation direction of the rotating body portion,
The cutting edge is inclined with respect to a direction orthogonal to the side surface portion of the cutting blade portion, and is perpendicular to the rotation axis and passes through an end portion of the cutting edge on the rotation axis side of the cutting edge. than the end towards the end of the rotating shaft and opposite the rotary shaft side, the constructed end face cutting apparatus as inclined so as to be positioned on the upstream side in the rotational direction.   The end surface cutting apparatus according to claim 1, wherein an angle at which the cutting edge is inclined with respect to the virtual straight line is 5 to 40 °.   The end face cutting process according to claim 1 or 2, wherein the fixed portion extends along a direction perpendicular to the imaginary straight line when viewed along the extending direction of the rotation axis. apparatus. An end face cutting method for cutting an end face of a laminate formed by laminating sheets,
The said cutting which rotates while using the end surface cutting processing apparatus of any one of Claims 1-3, rotating the said cutting part by rotating the said rotary body part centering | focusing on the said rotating shaft. An end face cutting method, wherein the end face is cut by the cutting edge of a part.

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