WO2020129565A1 - Cutting device - Google Patents

Cutting device Download PDF

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Publication number
WO2020129565A1
WO2020129565A1 PCT/JP2019/046501 JP2019046501W WO2020129565A1 WO 2020129565 A1 WO2020129565 A1 WO 2020129565A1 JP 2019046501 W JP2019046501 W JP 2019046501W WO 2020129565 A1 WO2020129565 A1 WO 2020129565A1
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WO
WIPO (PCT)
Prior art keywords
cutting
end mill
tilt
work
mill blade
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PCT/JP2019/046501
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French (fr)
Japanese (ja)
Inventor
誠 中市
宏太 仲井
重雄 坂口
岳 淺川
Original Assignee
日東電工株式会社
株式会社Ｂｂｓ金明
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 日東電工株式会社, 株式会社Ｂｂｓ金明 filed Critical 日東電工株式会社
Priority to CN201980083565.1A priority Critical patent/CN113195140A/en
Priority to JP2020561249A priority patent/JP7215691B2/en
Priority to KR1020217014026A priority patent/KR102515538B1/en
Publication of WO2020129565A1 publication Critical patent/WO2020129565A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C1/00—Milling machines not designed for particular work or special operations
    • B23C1/12—Milling machines not designed for particular work or special operations with spindle adjustable to different angles, e.g. either horizontal or vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • B23C5/1009—Ball nose end mills
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2220/00—Details of milling processes
    • B23C2220/64—Using an endmill, i.e. a shaft milling cutter, to generate profile of a crankshaft or camshaft

Definitions

  • the present invention relates to a cutting device.
  • Patent Document 1 proposes a device for cutting an end surface of a work with an end mill blade held in a cantilever state on a main body (that is, only one end portion is held).
  • high precision is required for processing the end surface of a work.
  • a cutting device including a cantilevered end mill blade as described in Patent Document 1 since the end mill blade often bends and desired machining accuracy cannot be obtained, a double-ended (that is, both ends are held) end mill A cutting device including a blade is under consideration.
  • the present invention has been made in order to solve the above-mentioned conventional problems, and its main purpose is a cutting apparatus including an end mill blade held by both ends and easily adjusting the inclination of the end mill blade. It is to provide a cutting device capable of performing the above.
  • the cutting apparatus of the present invention is a cutting apparatus for cutting the outer peripheral surface of a work in which a plurality of films are stacked.
  • a cutting apparatus includes a device body; an end mill blade; a cutting unit having a holder that rotatably holds the end mill blade at both ends; and a unit body to which the holder is attached; an inclination of the cutting unit.
  • a tilt adjustment mechanism configured to adjust.
  • the tilt adjusting mechanism includes a first direction in which an upper part of the end mill blade approaches the work and a lower part moves away from the work, and an upper part of the end mill blade moves away from the work and a lower part moves the work. Is configured to tilt the cutting unit in one direction selected from the group consisting of a second direction approaching to.
  • the tilt adjusting mechanism includes a mechanism body rotatably attached to the apparatus body; a connecting rod pivotally supported by the mechanism body and connected to the unit body of the cutting unit.
  • An inclination amount adjusting micrometer for adjusting an inclination amount of the mechanism main body; a first adjusting nut for inclining the mechanism main body to an inclination amount adjusted by the inclination amount adjusting micrometer; A second adjusting nut that is fixed in an inclined state with a different inclination amount;
  • the tilt adjusting mechanism is configured to be able to adjust the tilt amount of the cutting unit within a range of -1° to +1°.
  • the unit body of the cutting unit is rotatably attached to the device body.
  • the film is an optical laminate including a pressure-sensitive adhesive layer.
  • FIG. 1 is a schematic perspective view of a cutting device according to one embodiment of the present invention. It is a schematic perspective view which shows an example of the end mill blade used for the cutting device by embodiment of this invention. It is a schematic side view which shows the state which inclined the cutting unit of the cutting device of FIG. 1 to a 1st direction. It is a schematic side view which shows the state which inclined the cutting unit of the cutting device of FIG. 1 in the 2nd direction. 3 is a schematic perspective view showing a processed shape of the work used in Example 1 and Comparative Example 1.
  • FIG. 1 is a schematic perspective view of a cutting device according to one embodiment of the present invention. It is a schematic perspective view which shows an example of the end mill blade used for the cutting device by embodiment of this invention. It is a schematic side view which shows the state which inclined the cutting unit of the cutting device of FIG. 1 to a 1st direction. It is a schematic side view which shows the state which inclined the cutting unit of the cutting device of FIG. 1 in the 2nd direction.
  • 3 is
  • FIG. 1 is a schematic perspective view of a cutting apparatus according to one embodiment of the present invention.
  • the cutting apparatus 100 of the illustrated example includes a device body 10, a cutting unit 30 including an end mill blade 31, and an inclination adjusting mechanism 50.
  • the work W is shown on the right side of the cutting apparatus 100.
  • the work W is formed by stacking a plurality of films and is pressed by the clamp means in the illustrated example. In such a configuration, the effect of the present invention can be remarkable.
  • the end face of the work and the end mill blade are unlikely to be parallel, so it is necessary to confirm the inclination of the end mill blade with respect to the end face of the work before starting cutting and adjust the inclination of the end mill blade.
  • the inclination adjustment of the end mill blade in such a case is significantly easier than the conventional one.
  • the cutting unit 30 has an end mill blade 31, holders 32a and 32b that rotatably hold the end mill blade 31 at both ends, and a unit body 33 to which the holders 32a and 32b are attached.
  • the cutting apparatus of the present invention includes the end mill blades held in the unit main body 33 in a double-supported state. With such a configuration, the bending of the end mill blade can be suppressed, and highly accurate cutting can be performed. Furthermore, with such a configuration, the stress applied to the end mill blade during cutting can be reduced. As a result, the durability of the end mill blade can be improved, and therefore the stability and reliability of the end mill processing can be improved.
  • the unit main body 33 typically includes a vertically extending base 33a, an upper plate 33b attached to an upper part of the base and extending in the horizontal direction, and a lower plate 33c attached to a lower part of the base and extending in the horizontal direction.
  • Have. Holders 32a and 32b are attached to the upper plate 33b and the lower plate 33c, respectively.
  • the base body 33a typically has an upside down inverted L-shape having a protrusion in the direction of the apparatus body 10, and is pivotally supported by the apparatus body 10 at the protrusion.
  • the base body 33a is rotated clockwise or counterclockwise about the pivotal support portion 34 as a fulcrum (axis) by the action of the tilt adjusting mechanism 50 described later, and as a result, the cutting unit 33 (substantially Specifically, the end mill blade 31) can be inclined. More specifically, by rotating the base body 33a in a clockwise direction with the pivotal portion 34 as a fulcrum (axis), a direction in which the upper part of the end mill blade 31 approaches the work and the lower part moves away from the work (hereinafter, referred to as the first direction).
  • the cutting unit can be tilted); by rotating the base body 33a counterclockwise about the pivotal support portion 34 as a fulcrum (axis), the lower part of the end mill blade 31 approaches the work and the upper part is
  • the cutting unit can be tilted in a direction away from the work (hereinafter sometimes referred to as a second direction).
  • the end mill blade 31 has, for example, as shown in FIG. 2, a main body 31b that rotates about a rotation shaft 31a that extends in the vertical direction, and a cutting blade 31c that projects from the main body 31b and is configured as the outermost diameter.
  • Cutting blade 31c typically includes a cutting edge 31d, a rake surface 31e, and a relief surface 31f.
  • the blade angle of the end mill blade can be appropriately set according to the purpose.
  • the blade angle of the end mill blade may be 0° (the blade edge may extend in a direction substantially parallel to the rotation axis), and the blade edge may rotate at a predetermined angle ⁇ with respect to the rotation axis as shown in the illustrated example.
  • the number of end mill blades can also be set appropriately according to the purpose.
  • the number of blades may be one, two, three as in the illustrated example, four, or five or more.
  • the outer diameter of the end mill blade can also be appropriately set according to the purpose.
  • the outer diameter of the end mill is preferably 3 mm to 30 mm, more preferably 4 mm to 10 mm.
  • the "outer diameter of the end mill" refers to a value obtained by doubling the distance from the rotary shaft to one cutting edge.
  • the tilt adjusting mechanism 50 is typically provided on the side of the apparatus body 10 opposite to the cutting unit 30.
  • the tilt adjusting mechanism 50 typically includes a mechanism main body 51, a connecting rod 52, a first adjusting nut 53, a second adjusting nut 54, and a tilt amount adjusting micrometer 55.
  • the mechanism main body 51 is a plate-shaped member extending in the vertical direction, and is rotatably supported by the apparatus main body 10 at a protruding portion of the apparatus main body 10.
  • One end of the connecting rod 52 is pivotally supported by the mechanism body 51 near the lower end of the mechanism body 51.
  • the other end of the connecting rod 52 is connected to the unit body 33 of the cutting unit 33 (substantially, the device body side of the lower plate 33c).
  • the connecting rod 52 may be provided outside the device body 10 or may penetrate the device body 10 slidably.
  • the first adjusting nut 53 is typically provided on the opposite side of the pivoting portion 58 of the mechanism main body with respect to the connecting rod 52, and has a function of inclining the mechanism main body 51 to a desired position (distance).
  • the second adjusting nut 54 is typically provided on the side of the mechanism body opposite to the first adjusting nut 53, and has a function of fixing the mechanism body 51 inclined to a desired position at that position. Adjustment of the tilt amount is performed as follows.
  • both the first adjusting nut 53 and the second adjusting nut 54 are loosened, and the upper part of the mechanism main body 51 (on the side of the inclination adjusting micrometer 55) is separated from the main body of the apparatus.
  • the scale of the tilt amount adjusting micrometer 55 is turned to set the scale to a desired distance (corresponding to the tilt amount or tilt angle of the mechanism main body) from the reference (zero point).
  • the amount of protrusion of the tip portion (on the contact portion 56 side) of the tilt amount adjusting micrometer 55 changes.
  • the protrusion amount of the tip portion becomes larger or smaller on the contact portion side.
  • the first adjusting nut 53 is tightened to bring the tip end portion of the tilt amount adjusting micrometer 55 into contact with the contact portion 56.
  • the mechanism body is tilted by a desired tilt amount (tilt angle).
  • FIG. 3 is a schematic side view showing a state in which the cutting unit of the cutting apparatus of FIG. 1 is tilted in the first direction.
  • the mechanism main body 51 is pivotally supported. It rotates clockwise about 58 as a fulcrum (axis), and the upper part of the mechanism main body tilts toward the main body.
  • the pivotal support portion (rotating shaft of the mechanism main body) 58, the connecting rod 52 and the bearing portion 57 thereof constitute a so-called crank mechanism, and the rotation of the mechanism main body 51 causes axial support near the lower end of the mechanism main body.
  • the connecting rod 52 thus moved moves to the tilting mechanism side of the apparatus body 10.
  • the base body 33a rotates clockwise about the pivotal support portion 34 as a fulcrum (axis) via the lower plate 33c of the cutting unit 33 to which the connecting rod 52 is connected, and the cutting unit 33 moves to the first (The direction in which the upper part of the end mill blade 31 approaches the work and the lower part moves away from the work).
  • FIG. 4 is a schematic side view showing a state in which the cutting unit of the cutting apparatus of FIG. 1 is tilted in the second direction.
  • the embodiment of FIG. 4 tilts the cutting unit 33 in the opposite direction to the embodiment of FIG.
  • the mechanism is similar to that of FIG. 3 except that the directions are opposite. That is, by setting the scale of the micrometer 55 to a predetermined value and increasing the amount of protrusion of the tip portion of the micrometer 55 to bring it into contact with the contact portion 56, the mechanism main body 51 supports the pivot portion 58 as a fulcrum (axis). ), it rotates counterclockwise, and the upper part of the mechanism body tilts to the side opposite to the body. As a result, the connecting rod 52 moves to the cutting unit side of the device body 10.
  • the base body 33a rotates counterclockwise around the pivotal support portion 34 as a fulcrum (axis) via the lower plate 33c of the cutting unit 33 to which the connecting rod 52 is connected, and the cutting unit 33 is moved to the above-mentioned first position. Inclination in the direction 2 (the direction in which the lower part of the end mill blade 31 approaches the work and the upper part moves away from the work).
  • the tilt amount of the mechanism main body 51 can be adjusted using the tilt amount adjusting micrometer 55, and the tilt amount of the cutting unit 33 can be adjusted according to the tilt amount of the mechanism main body 51. That is, the tilt amount of the cutting unit 33 can be adjusted by adjusting the tilt amount of the tilt adjusting mechanism 50 (substantially, the mechanism main body 51).
  • the tilt amount of the cutting unit 33 can be adjusted within the range of -1° to +1° in one embodiment with respect to the vertical direction, and in another embodiment, from -0.5° to +0.5. It can be adjusted in the range of 0°, and in another embodiment, can be adjusted in the range of ⁇ 0.3° to +0.3°.
  • such fine adjustment of the amount of inclination can be performed in a short time without relying on intuition or tips. Further, such fine adjustment can significantly improve the accuracy of cutting work. For example, when it is desired to process the long side of the work into a straight line, the work is processed so that the central portion in the long side direction swells; and after processing the film above the work and the film below the work. Can be prevented. In addition, it is possible to suppress an excessive load from being applied to the end mill blade during cutting, and as a result, it is possible to improve the stability of cutting and the durability of the end mill blade.
  • the cutting apparatus of the present invention is typically used for cutting the outer peripheral surface of a work in which a plurality of films are stacked. Cutting processing includes non-linear processing (deformed processing) in one embodiment.
  • the film to be cut may be any appropriate film.
  • a typical example of the film to be cut is an optical laminate including a pressure-sensitive adhesive layer (that is, a laminate including a pressure-sensitive adhesive layer and an optical film).
  • INDUSTRIAL APPLICABILITY The cutting apparatus of the present invention, even if it is an optical layered body including an adhesive layer, satisfactorily suppresses adhesive chipping and/or blocking, and does not adversely affect the optical characteristics of the optical layered body. It can be performed.
  • the optical film may be a single film or a laminate.
  • the optical film examples include a polarizer, a retardation film, a polarizing plate (typically a laminate of a polarizer and a protective film), a conductive film for a touch panel, a surface-treated film, and for these purposes.
  • a laminate for example, a circularly polarizing plate for antireflection, a polarizing plate with a conductive layer for a touch panel
  • the cutting apparatus of the present invention can be finally suitably used for the method for producing an optical film.
  • Example 1 Using the cutting apparatus having the inclination adjusting mechanism as shown in FIG. 1, the work was cut so as to have a shape as shown in FIG. It should be noted that the numbers 1 to 5 in the work are numbered in order from the top with respect to five parts obtained by dividing the work into five equal parts in the thickness direction.
  • the dimensional difference of the parts 1 to 5 after processing did not satisfy the control value (the maximum value of the dimensional difference of the parts 1 to 5 was a predetermined set value. Therefore, the inclination of the cutting unit (substantially, the end mill blade) was adjusted in the direction in which the dimensional difference between the portions 1 to 5 was reduced by using the micrometer of the inclination adjusting mechanism.
  • the dimensional difference of the parts 1 to 5 after processing satisfied the control value (the maximum value of the dimensional difference of the parts 1 to 5 was within the predetermined set value range). there were).
  • the setting of the cutting apparatus was completed only by adjusting the inclination of the end mill blade once.
  • the time required for adjusting the inclination was about 40 minutes. That is, the time required for setting the cutting apparatus was about 40 minutes.
  • the setting of the cutting apparatus required three tilt adjustments and one distance adjustment.
  • the time required for one tilt adjustment was about 70 minutes, and the time required for distance adjustment was about 30 minutes. That is, the time required for setting the cutting apparatus was about 240 minutes.
  • Example 1 As is clear from the comparison between Example 1 and Comparative Example 1, the inclination of the end mill blade is easily adjusted by providing a specific inclination adjusting mechanism in the cutting apparatus including the end mill blade held by both ends. be able to. As a result, it is possible to greatly reduce the time required for setting the cutting device for performing the cutting process with a predetermined accuracy.
  • the cutting apparatus of the present invention can be used for cutting the outer peripheral surface of a work in which a plurality of films are stacked, and can be particularly preferably used for cutting an optical laminate including an adhesive layer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Milling Processes (AREA)
  • Polarising Elements (AREA)

Abstract

Provided is a cutting device that includes an end mill blade retained at both ends thereof, wherein the inclination of the end mill blade can be easily adjusted. This cutting device performs cuts an outer peripheral surface of a workpiece formed by overlaying a plurality of sheets of film. A cutting device 100 is provided with: a device main body 10; a cutting unit 30 that includes an end mill blade 31, holders 32a, 32b that rotatably retain the end mill blade 31 at both end sections thereof, and a unit main body 33 to which the holders are attached; and an inclination adjustment mechanism 50 that can adjust the inclination of the cutting unit 30.

Description

切削加工装置Cutting equipment
　本発明は、切削加工装置に関する。 The present invention relates to a cutting device.
　従来、フィルムを複数枚重ねたワークの端面を切削加工する装置が知られている。例えば、特許文献１によれば、本体に片持ち状態で保持された（すなわち、一方の端部のみが保持された）エンドミル刃でワークの端面を切削加工する装置が提案されている。近年、ワークの端面の加工には、高い精度が求められるようになってきている。特許文献１に記載のような片持ちのエンドミル刃を含む切削加工装置ではエンドミル刃が撓み所望の加工精度が得られない場合が多いので、両持ちの（すなわち、両端部が保持された）エンドミル刃を含む切削加工装置が検討されている。 Conventionally, a device is known that cuts the end surface of a work in which multiple films are stacked. For example, Patent Document 1 proposes a device for cutting an end surface of a work with an end mill blade held in a cantilever state on a main body (that is, only one end portion is held). In recent years, high precision is required for processing the end surface of a work. In a cutting device including a cantilevered end mill blade as described in Patent Document 1, since the end mill blade often bends and desired machining accuracy cannot be obtained, a double-ended (that is, both ends are held) end mill A cutting device including a blade is under consideration.
特許第６２７７１５０号Patent No. 6277150 特開２００７－０４４８５５号公報Japanese Patent Laid-Open No. 2007-044855
　エンドミル刃を用いたワーク端面の切削加工においては、エンドミル刃がワーク端面に対してわずかでも傾くと、所望の精度での加工が困難となる場合が多い。例えば、ワークの長辺を直線状に加工することが所望される場合に、当該長辺方向の中央部が膨らむように加工されてしまう；および、ワーク上部のフィルムとワーク下部のフィルムの加工後の寸法が異なる；といった問題がある。このような問題は、特に、粘着剤層を含むフィルム（例えば、光学フィルム）の切削加工において顕著である。このような問題を解決するためには、エンドミル刃の傾斜を調整する必要がある。片持ちの切削刃を含む切削加工装置においては、切削刃の傾斜の調整は比較的容易である（特許文献２）。一方、両持ちのエンドミル刃を含む切削加工装置においては、エンドミル刃の傾斜の調整は、シム等を用いて熟練者の勘やコツに頼る作業により行われており、きわめて煩雑で長時間を要する。さらに、このようなシムを用いる作業は、エンドミル刃に過大な負荷がかかるおそれがあり、エンドミル刃が折れてしまうおそれがある。 When cutting the end face of the work using the end mill blade, if the end mill blade is slightly inclined with respect to the end face of the work, it will often be difficult to achieve the desired accuracy. For example, when it is desired to process the long side of the work into a straight line, the work is processed so that the central portion in the long side direction swells; and after processing the film above the work and the film below the work. Have different dimensions. Such a problem is particularly prominent in the cutting process of a film including an adhesive layer (for example, an optical film). In order to solve such a problem, it is necessary to adjust the inclination of the end mill blade. In a cutting device including a cantilevered cutting blade, adjusting the inclination of the cutting blade is relatively easy (Patent Document 2). On the other hand, in a cutting apparatus including a double-ended end mill blade, the adjustment of the inclination of the end mill blade is performed by a work relying on the intuition and tips of a skilled person using a shim or the like, which is extremely complicated and requires a long time. .. Further, the work using such a shim may apply an excessive load to the end mill blade, and the end mill blade may be broken.
　本発明は上記従来の課題を解決するためになされたものであり、その主たる目的は、両持ちで保持されたエンドミル刃を含む切削加工装置であって、当該エンドミル刃の傾斜を容易に調整することができる切削加工装置を提供することにある。 The present invention has been made in order to solve the above-mentioned conventional problems, and its main purpose is a cutting apparatus including an end mill blade held by both ends and easily adjusting the inclination of the end mill blade. It is to provide a cutting device capable of performing the above.
　本発明の切削加工装置は、フィルムを複数枚重ねたワークの外周面を切削加工する切削加工装置である。切削加工装置は、装置本体と；エンドミル刃と、該エンドミル刃を回転自在に両端部で保持するホルダーと、該ホルダーが取り付けられたユニット本体と、を有する切削ユニットと；該切削ユニットの傾斜を調整するよう構成された傾斜調整機構と；を備える。
　１つの実施形態においては、上記傾斜調整機構は、上記エンドミル刃の上部が上記ワークに近づき下部が該ワークから遠ざかる第１の方向、および、該エンドミル刃の上部が該ワークから遠ざかり下部が該ワークに近づく第２の方向からなる群から選択される１つの方向に、上記切削ユニットを傾斜させるよう構成されている。
　１つの実施形態においては、上記傾斜調整機構は、上記装置本体に回動可能に取り付けられた機構本体と；該機構本体に軸支され、かつ、上記切削ユニットのユニット本体に連結されたコネクティングロッドと；該機構本体の傾斜量を調整する傾斜量調整マイクロメーターと；該傾斜量調整マイクロメーターで調整した傾斜量まで該機構本体を傾斜させる第１の調整ナットと；該機構本体を該調整された傾斜量で傾斜した状態で固定する第２の調整ナットと；を有する。
　１つの実施形態においては、上記傾斜調整機構は、上記切削ユニットの傾斜量を－１°～＋１°の範囲内で調整可能に構成されている。
　１つの実施形態においては、上記切削ユニットのユニット本体は、上記装置本体に回動可能に取り付けられている。
　１つの実施形態においては、上記フィルムは粘着剤層を含む光学積層体である。 The cutting apparatus of the present invention is a cutting apparatus for cutting the outer peripheral surface of a work in which a plurality of films are stacked. A cutting apparatus includes a device body; an end mill blade; a cutting unit having a holder that rotatably holds the end mill blade at both ends; and a unit body to which the holder is attached; an inclination of the cutting unit. A tilt adjustment mechanism configured to adjust.
In one embodiment, the tilt adjusting mechanism includes a first direction in which an upper part of the end mill blade approaches the work and a lower part moves away from the work, and an upper part of the end mill blade moves away from the work and a lower part moves the work. Is configured to tilt the cutting unit in one direction selected from the group consisting of a second direction approaching to.
In one embodiment, the tilt adjusting mechanism includes a mechanism body rotatably attached to the apparatus body; a connecting rod pivotally supported by the mechanism body and connected to the unit body of the cutting unit. An inclination amount adjusting micrometer for adjusting an inclination amount of the mechanism main body; a first adjusting nut for inclining the mechanism main body to an inclination amount adjusted by the inclination amount adjusting micrometer; A second adjusting nut that is fixed in an inclined state with a different inclination amount;
In one embodiment, the tilt adjusting mechanism is configured to be able to adjust the tilt amount of the cutting unit within a range of -1° to +1°.
In one embodiment, the unit body of the cutting unit is rotatably attached to the device body.
In one embodiment, the film is an optical laminate including a pressure-sensitive adhesive layer.
　本発明によれば、両持ちで保持されたエンドミル刃を含む切削加工装置において特定の傾斜調整機構を設けることにより、当該エンドミル刃の傾斜を容易に調整することができる切削加工装置を実現することができる。 According to the present invention, it is possible to realize a cutting apparatus that can easily adjust the inclination of the end mill blade by providing a specific inclination adjusting mechanism in the cutting apparatus including the end mill blades held by both ends. You can
本発明の１つの実施形態による切削加工装置の概略斜視図である。1 is a schematic perspective view of a cutting device according to one embodiment of the present invention. 本発明の実施形態による切削加工装置に用いられるエンドミル刃の一例を示す概略斜視図である。It is a schematic perspective view which shows an example of the end mill blade used for the cutting device by embodiment of this invention. 図１の切削加工装置の切削ユニットを第１の方向に傾斜させた状態を示す概略側面図である。It is a schematic side view which shows the state which inclined the cutting unit of the cutting device of FIG. 1 to a 1st direction. 図１の切削加工装置の切削ユニットを第２の方向に傾斜させた状態を示す概略側面図である。It is a schematic side view which shows the state which inclined the cutting unit of the cutting device of FIG. 1 in the 2nd direction. 実施例１および比較例１で用いたワークの加工形状を示す概略斜視図である。3 is a schematic perspective view showing a processed shape of the work used in Example 1 and Comparative Example 1. FIG.
　以下、図面を参照して本発明の具体的な実施形態について説明するが、本発明はこれらの実施形態には限定されない。なお、見やすくするために図面は模式的に表されており、さらに、図面における長さ、幅、厚み等の比率、ならびに角度等は、実際とは異なっている。 Hereinafter, specific embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments. Note that the drawings are schematically illustrated for easy understanding, and the ratios of lengths, widths, thicknesses, and the like, angles, and the like in the drawings are different from actual ones.
　図１は、本発明の１つの実施形態による切削加工装置の概略斜視図である。図示例の切削加工装置１００は、装置本体１０とエンドミル刃３１を含む切削ユニット３０と傾斜調整機構５０とを備える。図示例においては、切削加工装置１００の右側にワークＷが示されている。ワークＷは、フィルムが複数枚重ねられて形成され、図示例においてはクランプ手段により押圧されている。このような構成において本発明の効果が顕著となり得る。すなわち、ワークをクランプ手段により押圧する構成においては、ワークの端面とエンドミル刃が平行になりにくいので、切削開始前にワークの端面に対するエンドミル刃の傾斜を確認して、エンドミル刃の傾斜調整が必要となる。本発明の実施形態によれば、このような場合におけるエンドミル刃の傾斜調整が従来に比べて格段に容易となる。 FIG. 1 is a schematic perspective view of a cutting apparatus according to one embodiment of the present invention. The cutting apparatus 100 of the illustrated example includes a device body 10, a cutting unit 30 including an end mill blade 31, and an inclination adjusting mechanism 50. In the illustrated example, the work W is shown on the right side of the cutting apparatus 100. The work W is formed by stacking a plurality of films and is pressed by the clamp means in the illustrated example. In such a configuration, the effect of the present invention can be remarkable. That is, in the configuration in which the work is pressed by the clamping means, the end face of the work and the end mill blade are unlikely to be parallel, so it is necessary to confirm the inclination of the end mill blade with respect to the end face of the work before starting cutting and adjust the inclination of the end mill blade. Becomes According to the embodiment of the present invention, the inclination adjustment of the end mill blade in such a case is significantly easier than the conventional one.
　切削ユニット３０は、エンドミル刃３１と、エンドミル刃３１を回転自在に両端部で保持するホルダー３２ａおよび３２ｂと、ホルダー３２ａおよび３２ｂが取り付けられたユニット本体３３と、を有する。このように、本発明の切削加工装置は、ユニット本体３３に両持ち状態で保持されたエンドミル刃を含む。このような構成であれば、エンドミル刃の撓みを抑制することができ、高精度の切削加工が可能となる。さらに、このような構成であれば、切削時にエンドミル刃にかかる応力を低減することができる。その結果、エンドミル刃の耐久性を向上させることができ、したがって、エンドミル加工の安定性および信頼性を向上させることができる。 The cutting unit 30 has an end mill blade 31, holders 32a and 32b that rotatably hold the end mill blade 31 at both ends, and a unit body 33 to which the holders 32a and 32b are attached. As described above, the cutting apparatus of the present invention includes the end mill blades held in the unit main body 33 in a double-supported state. With such a configuration, the bending of the end mill blade can be suppressed, and highly accurate cutting can be performed. Furthermore, with such a configuration, the stress applied to the end mill blade during cutting can be reduced. As a result, the durability of the end mill blade can be improved, and therefore the stability and reliability of the end mill processing can be improved.
　ユニット本体３３は、代表的には、鉛直方向に延びる基体３３ａと、基体の上部に取り付けられて水平方向に延びる上板３３ｂと、基体の下部に取り付けられて水平方向に延びる下板３３ｃと、を有する。上板３３ｂおよび下板３３ｃに、ホルダー３２ａおよび３２ｂがそれぞれ取り付けられている。基体３３ａは、代表的には、装置本体１０方向に突出部を有する天地逆転した逆Ｌ字状の形状を有し、突出部において装置本体１０に回動可能に枢支されている。このような構成であれば、後述する傾斜調整機構５０の作用によって、枢支部分３４を支点（軸）として時計回りまたは反時計回りに基体３３ａを回動させ、結果として、切削ユニット３３（実質的には、エンドミル刃３１）を傾斜させることができる。より具体的には、枢支部分３４を支点（軸）として基体３３ａを時計回りに回動させることにより、エンドミル刃３１の上部がワークに近づき下部がワークから遠ざかる方向（以下、第１の方向と称する場合がある）に切削ユニットを傾斜させることができ；枢支部分３４を支点（軸）として基体３３ａを反時計回りに回動させることにより、エンドミル刃３１の下部がワークに近づき上部がワークから遠ざかる方向（以下、第２の方向と称する場合がある）に切削ユニットを傾斜させることができる。 The unit main body 33 typically includes a vertically extending base 33a, an upper plate 33b attached to an upper part of the base and extending in the horizontal direction, and a lower plate 33c attached to a lower part of the base and extending in the horizontal direction. Have. Holders 32a and 32b are attached to the upper plate 33b and the lower plate 33c, respectively. The base body 33a typically has an upside down inverted L-shape having a protrusion in the direction of the apparatus body 10, and is pivotally supported by the apparatus body 10 at the protrusion. With such a configuration, the base body 33a is rotated clockwise or counterclockwise about the pivotal support portion 34 as a fulcrum (axis) by the action of the tilt adjusting mechanism 50 described later, and as a result, the cutting unit 33 (substantially Specifically, the end mill blade 31) can be inclined. More specifically, by rotating the base body 33a in a clockwise direction with the pivotal portion 34 as a fulcrum (axis), a direction in which the upper part of the end mill blade 31 approaches the work and the lower part moves away from the work (hereinafter, referred to as the first direction). The cutting unit can be tilted); by rotating the base body 33a counterclockwise about the pivotal support portion 34 as a fulcrum (axis), the lower part of the end mill blade 31 approaches the work and the upper part is The cutting unit can be tilted in a direction away from the work (hereinafter sometimes referred to as a second direction).
　エンドミル刃３１としては、任意の適切な構成が採用され得る。エンドミル刃３１は、例えば図２に示すように、鉛直方向に延びる回転軸３１ａを中心として回転する本体３１ｂと、本体３１ｂから突出し最外径として構成される切削刃３１ｃと、を有する。切削刃３１ｃは、代表的には、刃先３１ｄとすくい面３１ｅと逃がし面３１ｆとを含む。エンドミル刃の刃角度は目的に応じて適切に設定され得る。エンドミル刃の刃角度は０°であってもよく（刃先が回転軸と実質的に平行な方向に延びていてもよく）、図示例のように刃先が回転軸に対して所定の角度θねじれていてもよい。エンドミル刃の刃数も目的に応じて適切に設定され得る。刃数は、１枚であってもよく、２枚であってもよく、図示例のように３枚であってもよく、４枚であってもよく、５枚以上であってもよい。エンドミル刃の外径も目的に応じて適切に設定され得る。１つの実施形態においては、エンドミルの外径は、好ましくは３ｍｍ～３０ｍｍであり、より好ましくは４ｍｍ～１０ｍｍである。なお、本明細書において「エンドミルの外径」とは、回転軸から１つの刃先までの距離を２倍したものをいう。 Any suitable configuration can be adopted as the end mill blade 31. The end mill blade 31 has, for example, as shown in FIG. 2, a main body 31b that rotates about a rotation shaft 31a that extends in the vertical direction, and a cutting blade 31c that projects from the main body 31b and is configured as the outermost diameter. Cutting blade 31c typically includes a cutting edge 31d, a rake surface 31e, and a relief surface 31f. The blade angle of the end mill blade can be appropriately set according to the purpose. The blade angle of the end mill blade may be 0° (the blade edge may extend in a direction substantially parallel to the rotation axis), and the blade edge may rotate at a predetermined angle θ with respect to the rotation axis as shown in the illustrated example. May be The number of end mill blades can also be set appropriately according to the purpose. The number of blades may be one, two, three as in the illustrated example, four, or five or more. The outer diameter of the end mill blade can also be appropriately set according to the purpose. In one embodiment, the outer diameter of the end mill is preferably 3 mm to 30 mm, more preferably 4 mm to 10 mm. In the present specification, the "outer diameter of the end mill" refers to a value obtained by doubling the distance from the rotary shaft to one cutting edge.
　傾斜調整機構５０は、代表的には、装置本体１０の切削ユニット３０と反対側に設けられる。傾斜調整機構５０は、代表的には、機構本体５１と、コネクティングロッド５２と、第１の調整ナット５３と、第２の調整ナット５４と、傾斜量調整マイクロメーター５５と、を有する。機構本体５１は、垂直方向に延びる板状部材であり、装置本体１０の突出部において装置本体１０に回動可能に枢支されている。コネクティングロッド５２の一端は、機構本体５１の下端部近傍において機構本体５１に軸支されている。コネクティングロッド５２の他端は、切削ユニット３３のユニット本体３３（実質的には、下板３３ｃの装置本体側）に連結されている。コネクティングロッド５２は、装置本体１０の外側に設けられてもよく、装置本体１０を摺動自在に貫通していてもよい。第１の調整ナット５３は、代表的には、コネクティングロッド５２に対して機構本体の枢支部分５８の反対側に設けられ、機構本体５１を所望の位置（距離）まで傾斜させる機能を有する。第２の調整ナット５４は、代表的には、機構本体の第１の調整ナット５３と反対側に設けられ、所望の位置まで傾斜した機構本体５１を当該位置で固定する機能を有する。傾斜量の調整は以下のようにして行われる。最初に第１の調整ナット５３および第２の調整ナット５４の両方を緩めて、機構本体５１の上部（傾斜量調整マイクロメーター５５側）を装置本体から離す。次に、傾斜量調整マイクロメーター５５の目盛を回して、基準（ゼロ点）から所望の距離（機構本体の傾斜量または傾斜角度に対応する）に目盛を設定する。これにより、傾斜量調整マイクロメーター５５の先端部分（当接部５６側）の突出量が変化する。目盛の調整に応じて、当該先端部分の突出量は、当接部側に大きくまたは小さくなる。目盛の設定後、第１の調整ナット５３を締めて、傾斜量調整マイクロメーター５５の先端部分と当接部５６とを当接させる。その結果、機構本体が所望の傾斜量（傾斜角度）で傾斜する。この状態で第２の調整ナット５４を締めることにより、機構本体５１を固定することができ、切削加工時の負荷や振動によっても傾斜量が変化しないようにすることができる。 The tilt adjusting mechanism 50 is typically provided on the side of the apparatus body 10 opposite to the cutting unit 30. The tilt adjusting mechanism 50 typically includes a mechanism main body 51, a connecting rod 52, a first adjusting nut 53, a second adjusting nut 54, and a tilt amount adjusting micrometer 55. The mechanism main body 51 is a plate-shaped member extending in the vertical direction, and is rotatably supported by the apparatus main body 10 at a protruding portion of the apparatus main body 10. One end of the connecting rod 52 is pivotally supported by the mechanism body 51 near the lower end of the mechanism body 51. The other end of the connecting rod 52 is connected to the unit body 33 of the cutting unit 33 (substantially, the device body side of the lower plate 33c). The connecting rod 52 may be provided outside the device body 10 or may penetrate the device body 10 slidably. The first adjusting nut 53 is typically provided on the opposite side of the pivoting portion 58 of the mechanism main body with respect to the connecting rod 52, and has a function of inclining the mechanism main body 51 to a desired position (distance). The second adjusting nut 54 is typically provided on the side of the mechanism body opposite to the first adjusting nut 53, and has a function of fixing the mechanism body 51 inclined to a desired position at that position. Adjustment of the tilt amount is performed as follows. First, both the first adjusting nut 53 and the second adjusting nut 54 are loosened, and the upper part of the mechanism main body 51 (on the side of the inclination adjusting micrometer 55) is separated from the main body of the apparatus. Next, the scale of the tilt amount adjusting micrometer 55 is turned to set the scale to a desired distance (corresponding to the tilt amount or tilt angle of the mechanism main body) from the reference (zero point). As a result, the amount of protrusion of the tip portion (on the contact portion 56 side) of the tilt amount adjusting micrometer 55 changes. Depending on the adjustment of the scale, the protrusion amount of the tip portion becomes larger or smaller on the contact portion side. After setting the scale, the first adjusting nut 53 is tightened to bring the tip end portion of the tilt amount adjusting micrometer 55 into contact with the contact portion 56. As a result, the mechanism body is tilted by a desired tilt amount (tilt angle). By tightening the second adjusting nut 54 in this state, the mechanism main body 51 can be fixed, and the inclination amount can be prevented from changing even by the load or vibration during the cutting process.
　次に、切削ユニット３３の傾斜について具体的に説明する。図３は、図１の切削加工装置の切削ユニットを第１の方向に傾斜させた状態を示す概略側面図である。図３に示すように、マイクロメーター５５の目盛を所定値に設定し、マイクロメーター５５の先端部分の突出量を小さくして当接部５６に当接させることにより、機構本体５１が枢支部分５８を支点（軸）として時計回りに回動し、機構本体の上部が本体側に傾斜する。ここで、枢支部分（機構本体の回動軸）５８とコネクティングロッド５２とその軸受け部分５７とがいわゆるクランク機構を構成し、機構本体５１の回動により、機構本体の下端部近傍に軸支されたコネクティングロッド５２が装置本体１０の傾斜機構側に移動する。コネクティングロッド５２の移動により、コネクティングロッド５２が連結した切削ユニット３３の下板３３ｃを介して基体３３ａが枢支部分３４を支点（軸）として時計回りに回動し、切削ユニット３３が上記第１の方向（エンドミル刃３１の上部がワークに近づき下部がワークから遠ざかる方向）に傾斜する。 Next, the inclination of the cutting unit 33 will be specifically described. FIG. 3 is a schematic side view showing a state in which the cutting unit of the cutting apparatus of FIG. 1 is tilted in the first direction. As shown in FIG. 3, by setting the scale of the micrometer 55 to a predetermined value and reducing the amount of protrusion of the tip of the micrometer 55 to bring it into contact with the contact portion 56, the mechanism main body 51 is pivotally supported. It rotates clockwise about 58 as a fulcrum (axis), and the upper part of the mechanism main body tilts toward the main body. Here, the pivotal support portion (rotating shaft of the mechanism main body) 58, the connecting rod 52 and the bearing portion 57 thereof constitute a so-called crank mechanism, and the rotation of the mechanism main body 51 causes axial support near the lower end of the mechanism main body. The connecting rod 52 thus moved moves to the tilting mechanism side of the apparatus body 10. By the movement of the connecting rod 52, the base body 33a rotates clockwise about the pivotal support portion 34 as a fulcrum (axis) via the lower plate 33c of the cutting unit 33 to which the connecting rod 52 is connected, and the cutting unit 33 moves to the first (The direction in which the upper part of the end mill blade 31 approaches the work and the lower part moves away from the work).
　図４は、図１の切削加工装置の切削ユニットを第２の方向に傾斜させた状態を示す概略側面図である。図４の実施形態は、図３の実施形態とは逆方向に切削ユニット３３を傾斜させる。そのメカニズムは、方向が逆であることを除けば図３の場合と同様である。すなわち、マイクロメーター５５の目盛を所定値に設定し、マイクロメーター５５の先端部分の突出量を大きくして当接部５６に当接させることにより、機構本体５１が枢支部分５８を支点（軸）として反時計回りに回動し、機構本体の上部が本体と反対側に傾斜する。その結果、コネクティングロッド５２が装置本体１０の切削ユニット側に移動する。コネクティングロッド５２の移動により、コネクティングロッド５２が連結した切削ユニット３３の下板３３ｃを介して基体３３ａが枢支部分３４を支点（軸）として反時計回りに回動し、切削ユニット３３が上記第２の方向（エンドミル刃３１の下部がワークに近づき上部がワークから遠ざかる方向）に傾斜する。 4 is a schematic side view showing a state in which the cutting unit of the cutting apparatus of FIG. 1 is tilted in the second direction. The embodiment of FIG. 4 tilts the cutting unit 33 in the opposite direction to the embodiment of FIG. The mechanism is similar to that of FIG. 3 except that the directions are opposite. That is, by setting the scale of the micrometer 55 to a predetermined value and increasing the amount of protrusion of the tip portion of the micrometer 55 to bring it into contact with the contact portion 56, the mechanism main body 51 supports the pivot portion 58 as a fulcrum (axis). ), it rotates counterclockwise, and the upper part of the mechanism body tilts to the side opposite to the body. As a result, the connecting rod 52 moves to the cutting unit side of the device body 10. By the movement of the connecting rod 52, the base body 33a rotates counterclockwise around the pivotal support portion 34 as a fulcrum (axis) via the lower plate 33c of the cutting unit 33 to which the connecting rod 52 is connected, and the cutting unit 33 is moved to the above-mentioned first position. Inclination in the direction 2 (the direction in which the lower part of the end mill blade 31 approaches the work and the upper part moves away from the work).
　上記のとおり、傾斜量調整マイクロメーター５５を用いて機構本体５１の傾斜量を調整することができ、機構本体５１の傾斜量に対応して切削ユニット３３の傾斜量を調整することができる。すなわち、傾斜調整機構５０（実質的には、機構本体５１）の傾斜量を調整することにより、切削ユニット３３の傾斜量を調整することができる。切削ユニット３３の傾斜量は、鉛直方向に対して、１つの実施形態においては－１°～＋１°の範囲内で調整可能であり、別の実施形態においては－０．５°～＋０．５°の範囲内で調整可能であり、さらに別の実施形態においては－０．３°～＋０．３°の範囲内で調整可能である。本発明の実施形態によれば、上記のような構成においてマイクロメーターを用いることにより、このような微細な傾斜量の調整を勘やコツに頼ることなく、かつ、短時間で行うことができる。さらに、このような微細な調整により、切削加工の精度を格段に向上させることができる。例えば、ワークの長辺を直線状に加工することが所望される場合に、当該長辺方向の中央部が膨らむように加工されてしまう；および、ワーク上部のフィルムとワーク下部のフィルムの加工後の寸法が異なる；といった問題を防止することができる。加えて、切削加工時にエンドミル刃に過大な負荷がかかることを抑制することができ、結果として、切削加工の安定性およびエンドミル刃の耐久性を向上させることができる。 As described above, the tilt amount of the mechanism main body 51 can be adjusted using the tilt amount adjusting micrometer 55, and the tilt amount of the cutting unit 33 can be adjusted according to the tilt amount of the mechanism main body 51. That is, the tilt amount of the cutting unit 33 can be adjusted by adjusting the tilt amount of the tilt adjusting mechanism 50 (substantially, the mechanism main body 51). The tilt amount of the cutting unit 33 can be adjusted within the range of -1° to +1° in one embodiment with respect to the vertical direction, and in another embodiment, from -0.5° to +0.5. It can be adjusted in the range of 0°, and in another embodiment, can be adjusted in the range of −0.3° to +0.3°. According to the embodiment of the present invention, by using the micrometer in the above configuration, such fine adjustment of the amount of inclination can be performed in a short time without relying on intuition or tips. Further, such fine adjustment can significantly improve the accuracy of cutting work. For example, when it is desired to process the long side of the work into a straight line, the work is processed so that the central portion in the long side direction swells; and after processing the film above the work and the film below the work. Can be prevented. In addition, it is possible to suppress an excessive load from being applied to the end mill blade during cutting, and as a result, it is possible to improve the stability of cutting and the durability of the end mill blade.
　本発明の切削加工装置は、代表的には、フィルムを複数枚重ねたワークの外周面の切削加工に用いられる。切削加工は、１つの実施形態においては非直線加工（異形加工）を含む。切削加工されるフィルムとしては、任意の適切なフィルムが挙げられる。切削加工されるフィルムの代表例としては、粘着剤層を含む光学積層体（すなわち、粘着剤層と光学フィルムとの積層体）が挙げられる。本発明の切削加工装置は、粘着剤層を含む光学積層体であっても、糊欠けおよび／またはブロッキングを良好に抑制し、かつ、光学積層体の光学特性に悪影響を与えることなく、切削加工を行うことができる。光学フィルムは、単一のフィルムであってもよく積層体であってもよい。光学フィルムの具体例としては、偏光子、位相差フィルム、偏光板（代表的には、偏光子と保護フィルムとの積層体）、タッチパネル用導電性フィルム、表面処理フィルム、ならびに、これらを目的に応じて適切に積層した積層体（例えば、反射防止用円偏光板、タッチパネル用導電層付偏光板）が挙げられる。したがって、本発明の切削加工装置は、最終的には、光学フィルムの製造方法に好適に用いられ得る。 The cutting apparatus of the present invention is typically used for cutting the outer peripheral surface of a work in which a plurality of films are stacked. Cutting processing includes non-linear processing (deformed processing) in one embodiment. The film to be cut may be any appropriate film. A typical example of the film to be cut is an optical laminate including a pressure-sensitive adhesive layer (that is, a laminate including a pressure-sensitive adhesive layer and an optical film). INDUSTRIAL APPLICABILITY The cutting apparatus of the present invention, even if it is an optical layered body including an adhesive layer, satisfactorily suppresses adhesive chipping and/or blocking, and does not adversely affect the optical characteristics of the optical layered body. It can be performed. The optical film may be a single film or a laminate. Specific examples of the optical film include a polarizer, a retardation film, a polarizing plate (typically a laminate of a polarizer and a protective film), a conductive film for a touch panel, a surface-treated film, and for these purposes. A laminate (for example, a circularly polarizing plate for antireflection, a polarizing plate with a conductive layer for a touch panel) that is appropriately laminated is included. Therefore, the cutting apparatus of the present invention can be finally suitably used for the method for producing an optical film.
　以下、実施例により本発明を具体的に説明するが、本発明はこれらの実施例には限定されない。 Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited to these examples.
＜実施例１＞
　図１のような傾斜調整機構を有する切削加工装置を用いて、図５に示すような形状となるようワークを切削加工した。なお、ワークにおける番号１～５は、ワークを厚み方向に５等分した５つの部分について上から順に番号付けしたものである。切削加工装置のセッティングを行わずに切削加工したところ、加工後の部分１～５の寸法の差が管理値を満たしていなかった（部分１～５の寸法の差の最大値が所定の設定値を超えていた）ので、傾斜調整機構のマイクロメーターを用いて部分１～５の寸法の差が小さくなる方向に切削ユニット（実質的には、エンドミル刃）の傾斜を調整した。エンドミル刃の傾斜の調整後に切削加工したところ、加工後の部分１～５の寸法の差は管理値を満たした（部分１～５の寸法の差の最大値が所定の設定値の範囲内であった）。このように、エンドミル刃の傾斜の調整を１回行っただけで、切削加工装置のセッティングが完了した。傾斜調整に要した時間は約４０分であった。すなわち、切削加工装置のセッティングに要した時間は約４０分であった。 <Example 1>
Using the cutting apparatus having the inclination adjusting mechanism as shown in FIG. 1, the work was cut so as to have a shape as shown in FIG. It should be noted that the numbers 1 to 5 in the work are numbered in order from the top with respect to five parts obtained by dividing the work into five equal parts in the thickness direction. When cutting was performed without setting the cutting device, the dimensional difference of the parts 1 to 5 after processing did not satisfy the control value (the maximum value of the dimensional difference of the parts 1 to 5 was a predetermined set value. Therefore, the inclination of the cutting unit (substantially, the end mill blade) was adjusted in the direction in which the dimensional difference between the portions 1 to 5 was reduced by using the micrometer of the inclination adjusting mechanism. When cutting was performed after adjusting the inclination of the end mill blade, the dimensional difference of the parts 1 to 5 after processing satisfied the control value (the maximum value of the dimensional difference of the parts 1 to 5 was within the predetermined set value range). there were). In this way, the setting of the cutting apparatus was completed only by adjusting the inclination of the end mill blade once. The time required for adjusting the inclination was about 40 minutes. That is, the time required for setting the cutting apparatus was about 40 minutes.
＜比較例１＞
　傾斜調整機構を有さないこと以外は図１と同様の切削加工装置を用いて、図５に示すような形状となるようワークを切削加工した。切削加工装置のセッティングを行わずに切削加工したところ、加工後の部分１～５の寸法の差が管理値を満たしていなかった（部分１～５の寸法の差の最大値が所定の設定値を超えていた）ので、シムを用いて熟練者の勘やコツに頼る作業により切削ユニット（実質的には、エンドミル刃）の傾斜を調整した。この傾斜調整後に切削加工したところ、加工後の部分１～５の寸法の差がいまだ管理値を満たしていなかったので、ワークとエンドミル刃との距離の調整を行った。距離の調整後に切削加工したところ、加工後の部分１～５の寸法の差がいまだ管理値を満たしていなかったので、シムを用いた熟練者の勘やコツに頼る作業により２回目の傾斜調整を行った。２回目の傾斜調整後に切削加工したところ、加工後の部分１～５の寸法の差がそれでも管理値を満たしていなかったので、上記と同様にして３回目の傾斜調整を行った。３回目の傾斜調整後にようやく管理値を満たすことができた。このように、切削加工装置のセッティングに、傾斜調整３回および距離調整１回を要した。１回の傾斜調整に要した時間は約７０分であり、距離調整に要した時間は約３０分であった。すなわち、切削加工装置のセッティングに要した時間は約２４０分であった。 <Comparative Example 1>
A workpiece was cut into a shape as shown in FIG. 5 by using the same cutting apparatus as that shown in FIG. 1 except that the inclination adjusting mechanism was not provided. When cutting was performed without setting the cutting device, the dimensional difference of the parts 1 to 5 after processing did not satisfy the control value (the maximum value of the dimensional difference of the parts 1 to 5 was a predetermined set value. Therefore, the inclination of the cutting unit (substantially, the end mill blade) was adjusted by using a shim and relying on the intuition and tips of a skilled person. When cutting was performed after this inclination adjustment, the difference in size between the portions 1 to 5 after processing did not yet satisfy the control value, so the distance between the work and the end mill blade was adjusted. After cutting after adjusting the distance, the difference in the dimensions of the parts 1 to 5 after processing did not yet satisfy the control value, so the second tilt adjustment is performed by using the shim and relying on the intuition of an expert I went. When cutting was performed after the second tilt adjustment, the difference in the dimensions of the processed portions 1 to 5 still did not satisfy the control value, so the third tilt adjustment was performed in the same manner as above. The control value could be finally satisfied after the third tilt adjustment. Thus, the setting of the cutting apparatus required three tilt adjustments and one distance adjustment. The time required for one tilt adjustment was about 70 minutes, and the time required for distance adjustment was about 30 minutes. That is, the time required for setting the cutting apparatus was about 240 minutes.
　実施例１と比較例１との比較から明らかなように、両持ちで保持されたエンドミル刃を含む切削加工装置において特定の傾斜調整機構を設けることにより、当該エンドミル刃の傾斜を容易に調整することができる。結果として、切削加工を所定の精度で行うための切削加工装置のセッティングに要する時間を大幅に短縮することができる。 As is clear from the comparison between Example 1 and Comparative Example 1, the inclination of the end mill blade is easily adjusted by providing a specific inclination adjusting mechanism in the cutting apparatus including the end mill blade held by both ends. be able to. As a result, it is possible to greatly reduce the time required for setting the cutting device for performing the cutting process with a predetermined accuracy.
　本発明の切削加工装置は、フィルムを複数枚重ねたワークの外周面の切削加工に用いられ得、粘着剤層を含む光学積層体の切削加工に特に好適に用いられ得る。 The cutting apparatus of the present invention can be used for cutting the outer peripheral surface of a work in which a plurality of films are stacked, and can be particularly preferably used for cutting an optical laminate including an adhesive layer.
　１０　　　装置本体
　３０　　　切削ユニット
　３１　　　エンドミル刃
　３２ａ　　ホルダー
　３２ｂ　　ホルダー
　３３　　　ユニット本体
　５０　　　傾斜調整機構
　５１　　　機構本体
　５２　　　コネクティングロッド
　５３　　　第１の調整ナット
　５４　　　第２の調整ナット
　５５　　　傾斜量調整マイクロメーター
１００　　　切削加工装置
  10 Device Main Body 30 Cutting Unit 31 End Mill Blade 32a Holder 32b Holder 33 Unit Main Body 50 Inclination Adjustment Mechanism 51 Mechanism Main Body 52 Connecting Rod 53 First Adjustment Nut 54 Second Adjustment Nut 55 Inclination Adjustment Micrometer 100 Cutting Processing Device

Claims (6)

  1. 　フィルムを複数枚重ねたワークの外周面を切削加工する切削加工装置であって、
    　装置本体と；
    　エンドミル刃と、該エンドミル刃を回転自在に両端部で保持するホルダーと、該ホルダーが取り付けられたユニット本体と、を有する切削ユニットと；
    　該切削ユニットの傾斜を調整するよう構成された傾斜調整機構と；
    　を備える、切削加工装置。     A cutting device for cutting the outer peripheral surface of a work in which a plurality of films are stacked,
    Device body;
    A cutting unit having an end mill blade, a holder that rotatably holds the end mill blade at both ends, and a unit body to which the holder is attached;
    A tilt adjustment mechanism configured to adjust the tilt of the cutting unit;
    A cutting device equipped with.
  2. 　前記傾斜調整機構が、前記エンドミル刃の上部が前記ワークに近づき下部が該ワークから遠ざかる第１の方向、および、該エンドミル刃の上部が該ワークから遠ざかり下部が該ワークに近づく第２の方向からなる群から選択される１つの方向に、前記切削ユニットを傾斜させるよう構成されている、請求項１に記載の切削加工装置。 From the first direction in which the upper part of the end mill blade approaches the work and the lower part moves away from the work, and the tilt adjusting mechanism moves from the second direction in which the upper part of the end mill blade moves away from the work and the lower part approaches the work. The cutting device according to claim 1, wherein the cutting unit is configured to incline the cutting unit in one direction selected from the group consisting of:
  3. 　前記傾斜調整機構が、前記装置本体に回動可能に取り付けられた機構本体と；該機構本体に軸支され、かつ、前記切削ユニットのユニット本体に連結されたコネクティングロッドと；該機構本体の傾斜量を調整する傾斜量調整マイクロメーターと；該傾斜量調整マイクロメーターで調整した傾斜量まで該機構本体を傾斜させる第１の調整ナットと；該機構本体を該調整された傾斜量で傾斜した状態で固定する第２の調整ナットと；を有する、請求項１または２に記載の切削加工装置。 A mechanism body in which the tilt adjusting mechanism is rotatably attached to the apparatus body; a connecting rod pivotally supported by the mechanism body and connected to a unit body of the cutting unit; tilt of the mechanism body A tilt adjusting micrometer for adjusting the amount; a first adjusting nut for tilting the mechanism main body to the tilt amount adjusted by the tilt adjusting micrometer; a state in which the mechanism main body is tilted by the adjusted tilt And a second adjusting nut fixed with the cutting tool according to claim 1 or 2.
  4. 　前記傾斜調整機構が、前記切削ユニットの傾斜量を－１°～＋１°の範囲内で調整可能に構成されている、請求項１から３のいずれかに記載の切削加工装置。 The cutting device according to any one of claims 1 to 3, wherein the tilt adjusting mechanism is configured to be able to adjust the tilt amount of the cutting unit within a range of -1° to +1°.
  5. 　前記切削ユニットのユニット本体が、前記装置本体に回動可能に取り付けられている、請求項１から４のいずれかに記載の切削加工装置。 The cutting device according to any one of claims 1 to 4, wherein a unit body of the cutting unit is rotatably attached to the device body.
  6. 　前記フィルムが粘着剤層を含む光学積層体である、請求項１から５のいずれかに記載の切削加工装置。
          The cutting device according to claim 1, wherein the film is an optical laminate including an adhesive layer.
PCT/JP2019/046501 2018-12-21 2019-11-28 Cutting device WO2020129565A1 (en)

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