JP6938084B2 - Blade holder - Google Patents

Blade holder Download PDF

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JP6938084B2
JP6938084B2 JP2017144434A JP2017144434A JP6938084B2 JP 6938084 B2 JP6938084 B2 JP 6938084B2 JP 2017144434 A JP2017144434 A JP 2017144434A JP 2017144434 A JP2017144434 A JP 2017144434A JP 6938084 B2 JP6938084 B2 JP 6938084B2
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cutting blade
holding
blade
blade holder
cutting
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JP2019025556A (en
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横山　太郎
太郎 横山
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Disco Corp
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Disco Corp
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Priority to KR1020180078595A priority patent/KR102586320B1/en
Priority to CN201810810709.6A priority patent/CN109304817B/en
Priority to TW107125400A priority patent/TWI757525B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005—Apparatus not specifically provided for elsewhere
    • H01L21/67011—Apparatus for manufacture or treatment
    • H01L21/67092—Apparatus for mechanical treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
    • B28D5/0058—Accessories specially adapted for use with machines for fine working of gems, jewels, crystals, e.g. of semiconductor material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
    • H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
    • H01L21/68707—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a robot blade, or gripped by a gripper for conveyance

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Dicing (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Jigs For Machine Tools (AREA)

Description

本発明は、切削ブレードを保持するためのブレード保持具に関する。 The present invention relates to a blade holder for holding a cutting blade.

携帯電話機やパーソナルコンピュータに代表される電子機器では、電子回路等のデバイスを備えるデバイスチップが必須の構成要素になっている。デバイスチップは、例えば、シリコン等の半導体材料でなるウェーハの表面を複数の分割予定ライン（ストリート）で区画し、各領域にデバイスを形成した後、この分割予定ラインに沿ってウェーハを分割することで得られる。 In electronic devices such as mobile phones and personal computers, a device chip including a device such as an electronic circuit is an indispensable component. In the device chip, for example, the surface of a wafer made of a semiconductor material such as silicon is partitioned by a plurality of scheduled division lines (streets), devices are formed in each region, and then the wafer is divided along the planned division lines. Obtained at.

ウェーハを複数のデバイスチップへと分割する際には、例えば、スピンドル（回転軸）に環状の切削ブレードが装着された切削装置を使用する。切削ブレードを高速に回転させた上で被加工物の分割予定ラインに沿って深く切り込ませることで、この被加工物を切断して複数のデバイスチップへと分割できる。 When dividing a wafer into a plurality of device chips, for example, a cutting device in which an annular cutting blade is mounted on a spindle (rotary axis) is used. By rotating the cutting blade at high speed and cutting deeply along the planned division line of the workpiece, the workpiece can be cut and divided into a plurality of device chips.

切削ブレードの一態様として、砥粒が結合材で固定された切刃のみでなるワッシャータイプが知られている。このワッシャータイプの切削ブレードには、厚みが０．３ｍｍ以下の薄い物も多い。そこで、搬送等の際には、切削ブレードをブレードケースに収容してその破損を防いでいる（例えば、特許文献１参照）。 As one aspect of the cutting blade, a washer type is known in which only a cutting blade in which abrasive grains are fixed with a binder is used. Many of these washer-type cutting blades are thin with a thickness of 0.3 mm or less. Therefore, during transportation or the like, the cutting blade is housed in a blade case to prevent its damage (see, for example, Patent Document 1).

特開２００６−８２８１７号公報Japanese Unexamined Patent Publication No. 2006-82817

ところで、上述のようなスピンドルに切削ブレードを装着する際には、通常、作業者が切削ブレードを手に取って必要な作業を行う。しかしながら、ワッシャータイプの切削ブレードは上述のように薄いことが多く、作業者の手が直に触れると破損する可能性が高かった。 By the way, when mounting a cutting blade on a spindle as described above, an operator usually picks up the cutting blade and performs necessary work. However, the washer-type cutting blade is often thin as described above, and there is a high possibility that it will be damaged if the operator's hand directly touches it.

本発明はかかる問題点に鑑みてなされたものであり、その目的とするところは、作業者が直に触れることなく切削ブレードを保持できるブレード保持具を提供することである。 The present invention has been made in view of such problems, and an object of the present invention is to provide a blade holder capable of holding a cutting blade without the operator directly touching the cutting blade.

本発明の一態様によれば、環状の切削ブレードを保持するためのブレード保持具であって、該切削ブレードを保持する保持面を外側に備えた板状且つＵ字状の保持部を含み、該保持面に付着させた液体を介して該液体の表面張力によって該切削ブレードを保持するブレード保持具が提供される。 According to one aspect of the present invention, it is a blade holder for holding an annular cutting blade, and includes a plate-shaped and U-shaped holding portion having a holding surface for holding the cutting blade on the outside. A blade holder for holding the cutting blade by the surface tension of the liquid via the liquid adhering to the holding surface is provided.

本発明の一態様において、前記保持部の前記保持面とは反対の第２面側に設けられ該保持部から延出する被把持部を更に備えることが好ましい。 In one aspect of the present invention, it is preferable to further include a gripped portion provided on the second surface side of the holding portion opposite to the holding surface and extending from the holding portion.

本発明の一態様に係るブレード保持具は、保持部の保持面に付着させた液体を介して液体の表面張力によって切削ブレードを保持する。よって、このブレード保持具を用いることで、作業者が直に触れることなく切削ブレードを保持できる。 The blade holder according to one aspect of the present invention holds the cutting blade by the surface tension of the liquid via the liquid adhering to the holding surface of the holding portion. Therefore, by using this blade holder, the cutting blade can be held without the operator directly touching it.

ブレード保持具の構成例を模式的に示す平面図である。It is a top view which shows the structural example of a blade holder schematically. ブレード保持具の構成例を模式的に示す側面図である。It is a side view which shows the structural example of the blade holder schematically. ブレード保持具によって切削ブレードが保持された状態を模式的に示す平面図である。It is a top view which shows typically the state which the cutting blade is held by the blade holder. 切削ユニットに対して切削ブレードが装着される様子を模式的に示す斜視図である。It is a perspective view which shows typically how the cutting blade is attached to the cutting unit.

添付図面を参照して、本発明の一態様に係る実施形態について説明する。図１は、本実施形態に係るブレード保持具２の構成例を模式的に示す平面図であり、図２は、ブレード保持具２の構成例を模式的に示す側面図である。図１及び図２に示すように、ブレード保持具２は、樹脂や金属等の材料でなる板状の保持部材（保持部）４を備えている。 An embodiment according to one aspect of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view schematically showing a configuration example of the blade holder 2 according to the present embodiment, and FIG. 2 is a side view schematically showing a configuration example of the blade holder 2. As shown in FIGS. 1 and 2, the blade holder 2 includes a plate-shaped holding member (holding portion) 4 made of a material such as resin or metal.

保持部材４は、例えば、概ね平坦な第１面（保持面）４ａ、及びこの第１面４ａとは反対側の第２面４ｂを有し、平面視で半環状（Ｕ字状）に形成されている。第１面４ａの表面粗さは、例えば、算術平均粗さ（Ｒａ）で６．３μｍ以下とする。第１面４ａをこのような表面粗さに形成することで、ブレード保持具２によって切削ブレード１２（図３等参照）を適切に保持できるようになる。 The holding member 4 has, for example, a substantially flat first surface (holding surface) 4a and a second surface 4b opposite to the first surface 4a, and is formed in a semi-annular shape (U-shape) in a plan view. Has been done. The surface roughness of the first surface 4a is, for example, an arithmetic mean roughness (Ra) of 6.3 μm or less. By forming the first surface 4a with such a surface roughness, the cutting blade 12 (see FIG. 3 and the like) can be appropriately held by the blade holder 2.

保持部材４の先端側は、開口４ｃを挟んで第１部分４ｄと第２部分４ｅとに分かれている。開口４ｃの形状は、例えば、平面視で半円状等である。また、本実施形態では、この開口４ｃを切削ブレード１２の開口１２ｂ（図３等参照）よりも大きく形成している。これにより、切削ブレード１２の装着先である切削ユニット等とブレード保持具２との干渉を防止できる。ただし、開口４ｃの形状、大きさ等に特段の制限はない。 The tip end side of the holding member 4 is divided into a first portion 4d and a second portion 4e with an opening 4c interposed therebetween. The shape of the opening 4c is, for example, a semicircular shape in a plan view. Further, in the present embodiment, the opening 4c is formed larger than the opening 12b of the cutting blade 12 (see FIG. 3 and the like). As a result, it is possible to prevent interference between the cutting unit or the like to which the cutting blade 12 is mounted and the blade holder 2. However, there are no particular restrictions on the shape, size, etc. of the opening 4c.

保持部材４の第２面４ｂ側には、作業者等が把持するための被把持部材（被把持部）６が、平面視で開口４ｃと重ならない位置に設けられている。この被把持部材６は、保持部材４から外向きに延出する板状の基部６ａと、基部６ａから保持部材４の反対側に突出する突出部６ｂとを含んでいる。例えば、この突出部６ｂを指でつまむことにより、被把持部材６を把持できる。ただし、被把持部材６の構造及び把持の態様に特段の制限はない。 On the second surface 4b side of the holding member 4, a gripped member (grasped portion) 6 for gripping by an operator or the like is provided at a position that does not overlap with the opening 4c in a plan view. The gripped member 6 includes a plate-shaped base portion 6a extending outward from the holding member 4 and a protruding portion 6b protruding from the base portion 6a to the opposite side of the holding member 4. For example, the member 6 to be gripped can be gripped by pinching the protruding portion 6b with a finger. However, there are no particular restrictions on the structure and gripping mode of the gripped member 6.

図３は、ブレード保持具２によって切削ブレード１２が保持された状態を模式的に示す平面図である。ブレード保持具２で円環状の切削ブレード１２を保持する際には、まず、保持部材４の第１面４ａに液体（不図示）を付着させる。そして、この液体を介して第１面４ａを切削ブレード１２の任意の被保持面（本実施形態では、第１面１２ａ）に接触させる。 FIG. 3 is a plan view schematically showing a state in which the cutting blade 12 is held by the blade holder 2. When holding the annular cutting blade 12 with the blade holder 2, first, a liquid (not shown) is attached to the first surface 4a of the holding member 4. Then, the first surface 4a is brought into contact with an arbitrary held surface (in this embodiment, the first surface 12a) of the cutting blade 12 via this liquid.

その結果、液体の表面張力によって、切削ブレード１２の任意の被保持面（本実施形態では、第１面１２ａ）がブレード保持具２の第１面４ａに密着する。これにより、切削ブレード１２をブレード保持具２で保持できる。本実施形態では、保持部材４の開口４ｃの内側に切削ブレード１２の開口１２ｂが配置されるように、切削ブレード１２とブレード保持具２との位置関係を調整している。 As a result, due to the surface tension of the liquid, an arbitrary held surface (first surface 12a in this embodiment) of the cutting blade 12 comes into close contact with the first surface 4a of the blade holder 2. As a result, the cutting blade 12 can be held by the blade holder 2. In the present embodiment, the positional relationship between the cutting blade 12 and the blade holder 2 is adjusted so that the opening 12b of the cutting blade 12 is arranged inside the opening 4c of the holding member 4.

これにより、切削ユニット等とブレード保持具２との干渉を防止できる。なお、本実施形態では、ブレード保持具２の第１面４ａを切削ブレード１２の第１面１２ａ側に接触させて切削ブレード１２を保持しているが、第１面４ａを第１面１２ａとは反対の第２面（不図示）側に接触させて切削ブレード１２を保持することもできる。 This makes it possible to prevent interference between the cutting unit and the like and the blade holder 2. In the present embodiment, the first surface 4a of the blade holder 2 is brought into contact with the first surface 12a side of the cutting blade 12 to hold the cutting blade 12, but the first surface 4a is referred to as the first surface 12a. Can also hold the cutting blade 12 in contact with the opposite second surface (not shown).

保持部材４の第１面４ａに付着させる液体の種類に特段の制限はないが、コストや取り扱い易さ等の点から水を用いることが望ましい。水を用いる場合には、後の洗浄等が不要になるというメリットもある。また、本実施形態では、ブレード保持具２側（保持部材４の第１面４ａ）に液体を付着させているが、切削ブレード１２側（被保持面）に液体を付着させても良い。 There is no particular limitation on the type of liquid to be attached to the first surface 4a of the holding member 4, but it is desirable to use water from the viewpoint of cost and ease of handling. When water is used, there is also an advantage that subsequent cleaning or the like becomes unnecessary. Further, in the present embodiment, the liquid is attached to the blade holder 2 side (first surface 4a of the holding member 4), but the liquid may be attached to the cutting blade 12 side (held surface).

次に、このブレード保持具２により保持された切削ブレード１２が切削ユニットに装着される様子を説明する。図４は、切削ユニット２２に対して切削ブレード１２が装着される様子を模式的に示す斜視図である。図４に示すように、切削ユニット２２は、例えば、切削装置の移動機構（不図示）等によって支持される筒状のスピンドルハウジング２４を備えている。 Next, a state in which the cutting blade 12 held by the blade holder 2 is attached to the cutting unit will be described. FIG. 4 is a perspective view schematically showing how the cutting blade 12 is attached to the cutting unit 22. As shown in FIG. 4, the cutting unit 22 includes, for example, a cylindrical spindle housing 24 supported by a moving mechanism (not shown) of the cutting device.

スピンドルハウジング２４の内部には、回転軸であるスピンドル２６が収容されている。スピンドル２６の先端部は、スピンドルハウジング２４の外部に露出している。このスピンドル２６の先端部には、切削ブレード１２を装着するための後フランジ２８が取り付けられている。後フランジ２８は、径方向外向きに延出するフランジ部３０と、フランジ部３０の前面中央部分から前方に突出するボス部３２とを含む。 A spindle 26, which is a rotating shaft, is housed inside the spindle housing 24. The tip of the spindle 26 is exposed to the outside of the spindle housing 24. A rear flange 28 for mounting the cutting blade 12 is attached to the tip of the spindle 26. The rear flange 28 includes a flange portion 30 extending outward in the radial direction and a boss portion 32 protruding forward from the front central portion of the flange portion 30.

フランジ部３０の外周側の表面（前面）は、切削ブレード１２の被保持面とは反対側の面（本実施形態では、第２面）に接触する接触面となっている。この接触面は、スピンドル２６の軸心方向から見て円環状に形成されている。ボス部３２は円筒状に形成されており、その外周面には、ねじ山が設けられている。 The outer peripheral surface (front surface) of the flange portion 30 is a contact surface that contacts a surface (second surface in this embodiment) opposite to the held surface of the cutting blade 12. This contact surface is formed in an annular shape when viewed from the axial direction of the spindle 26. The boss portion 32 is formed in a cylindrical shape, and a screw thread is provided on the outer peripheral surface thereof.

ブレード保持具２を介して切削ブレード１２を保持し、その開口１２ｂにボス部３２を挿入することで、切削ブレード１２は、後フランジ２８に取り付けられる。本実施形態では、保持部材４の開口４ｃの内側に切削ブレード１２の開口１２ｂが配置されるように、切削ブレード１２とブレード保持具２との位置関係を調整しているので、ボス部３２がブレード保持具２と干渉することはない。 The cutting blade 12 is attached to the rear flange 28 by holding the cutting blade 12 via the blade holder 2 and inserting the boss portion 32 into the opening 12b thereof. In the present embodiment, the positional relationship between the cutting blade 12 and the blade holder 2 is adjusted so that the opening 12b of the cutting blade 12 is arranged inside the opening 4c of the holding member 4, so that the boss portion 32 It does not interfere with the blade holder 2.

後フランジ２８に切削ブレード１２を取り付けた後には、切削ブレード１２の保持面（本実施形態では、第１面１２ａ）に対してブレード保持具２を平行にスライドさせて、切削ブレード１２からブレード保持具２を取り外す。切削ブレード１２は、液体の表面張力によってブレード保持具２に保持されているだけなので、切削ブレード１２に対してブレード保持具２を平行にスライドさせることで切削ブレード１２からブレード保持具２を容易に取り外せる。 After the cutting blade 12 is attached to the rear flange 28, the blade holder 2 is slid parallel to the holding surface of the cutting blade 12 (the first surface 12a in this embodiment) to hold the blade from the cutting blade 12. Remove tool 2. Since the cutting blade 12 is only held by the blade holder 2 by the surface tension of the liquid, the blade holder 2 can be easily moved from the cutting blade 12 by sliding the blade holder 2 in parallel with the cutting blade 12. It can be removed.

切削ブレード１２からブレード保持具２を取り外した後には、切削ブレード１２の被保持面側（本実施形態では、第１面１２ａ側）に、円環状の前フランジ３４を装着する。前フランジ３４の中央には、開口３４ａが形成されており、この開口３４ａに後フランジ２８のボス部３２が挿入される。なお、前フランジ３４の外周側の裏面（後面）は、切削ブレード１２の被保持面に接触する接触面となっている。前フランジ３４の接触面は、後フランジ２８の接触面と対応する位置に設けられている。 After removing the blade holder 2 from the cutting blade 12, an annular front flange 34 is attached to the held surface side (first surface 12a side in this embodiment) of the cutting blade 12. An opening 34a is formed in the center of the front flange 34, and the boss portion 32 of the rear flange 28 is inserted into the opening 34a. The back surface (rear surface) on the outer peripheral side of the front flange 34 is a contact surface that contacts the held surface of the cutting blade 12. The contact surface of the front flange 34 is provided at a position corresponding to the contact surface of the rear flange 28.

前フランジ３４をボス部３２に挿入した後には、ボス部３２の先端に円環状の固定ナット３６を締め込む。これにより、前フランジ３４は後フランジ２８側に押し付けられ、切削ブレード１２は、後フランジ２８と前フランジ３４とで挟持される。なお、固定ナット３６には、開口３６ａが形成されており、この開口３６ａの内壁面には、ボス部３２のネジ山に対応するねじ溝が設けられている。 After inserting the front flange 34 into the boss portion 32, the annular fixing nut 36 is tightened to the tip of the boss portion 32. As a result, the front flange 34 is pressed against the rear flange 28, and the cutting blade 12 is sandwiched between the rear flange 28 and the front flange 34. An opening 36a is formed in the fixing nut 36, and a thread groove corresponding to the thread of the boss portion 32 is provided on the inner wall surface of the opening 36a.

以上のように、本実施形態に係るブレード保持具２は、保持部材（保持部）４の第１面（保持面）４ａに付着させた液体を介して液体の表面張力によって切削ブレード１２を保持する。よって、このブレード保持具２を用いることで、作業者が直に触れることなく切削ブレード１２を保持できる。 As described above, the blade holder 2 according to the present embodiment holds the cutting blade 12 by the surface tension of the liquid via the liquid adhering to the first surface (holding surface) 4a of the holding member (holding portion) 4. do. Therefore, by using this blade holder 2, the cutting blade 12 can be held without the operator directly touching it.

なお、本発明は、上記実施形態の記載に制限されず種々変更して実施可能である。例えば、上記実施形態では、切削ブレード１２を切削ユニット２２に装着する際に、切削ブレード１２の被保持面を前フランジ３４に接触させ、切削ブレード１２の被保持面とは反対側の面を後フランジ２８（フランジ部３０）に接触させているが、切削ブレード１２の被保持面を後フランジ２８（フランジ部３０）に接触させ、切削ブレード１２の被保持面とは反対側の面を前フランジ３４に接触させても良い。 The present invention is not limited to the description of the above embodiment, and can be implemented with various modifications. For example, in the above embodiment, when the cutting blade 12 is mounted on the cutting unit 22, the held surface of the cutting blade 12 is brought into contact with the front flange 34, and the surface of the cutting blade 12 opposite to the held surface is rearward. Although it is in contact with the flange 28 (flange portion 30), the held surface of the cutting blade 12 is brought into contact with the rear flange 28 (flange portion 30), and the surface of the cutting blade 12 opposite to the held surface is the front flange. It may be brought into contact with 34.

その他、上記実施形態に係る構造、方法等は、本発明の目的の範囲を逸脱しない限りにおいて適宜変更して実施できる。 In addition, the structure, method, etc. according to the above-described embodiment can be appropriately modified and implemented as long as they do not deviate from the scope of the object of the present invention.

２ ブレード保持具
４ 保持部材（保持部）
４ａ 第１面（保持面）
４ｂ 第２面
４ｃ 開口
４ｄ 第１部分
４ｅ 第２部分
６ 被把持部材（被把持部）
６ａ 基部
６ｂ 突出部
１２ 切削ブレード
１２ａ 第１面
１２ｂ 開口
２２ 切削ユニット
２４ スピンドルハウジング
２６ スピンドル
２８ 後フランジ
３０ フランジ部
３２ ボス部
３４ 前フランジ
３４ａ 開口
３６ 固定ナット
３６ａ 開口 2 Blade holder 4 Holding member (holding part)
4a First surface (holding surface)
4b 2nd surface 4c Opening 4d 1st part 4e 2nd part 6 Grasping member (grasping part)
6a Base 6b Protruding part 12 Cutting blade 12a First surface 12b Opening 22 Cutting unit 24 Spindle housing 26 Spindle 28 Rear flange 30 Flange part 32 Boss part 34 Front flange 34a Opening 36 Fixing nut 36a Opening

Claims (2)

環状の切削ブレードを保持するためのブレード保持具であって、
該切削ブレードを保持する保持面を外側に備えた板状且つＵ字状の保持部を含み、
該保持面に付着させた液体を介して該液体の表面張力によって該切削ブレードを保持することを特徴とするブレード保持具。 A blade holder for holding an annular cutting blade,
A plate-shaped and U-shaped holding portion having a holding surface for holding the cutting blade on the outside is included.
A blade holder characterized in that the cutting blade is held by the surface tension of the liquid through the liquid adhering to the holding surface. 前記保持部の前記保持面とは反対の第２面側に設けられ該保持部から延出する被把持部を更に備えることを特徴とする請求項１に記載のブレード保持具。 The blade holder according to claim 1, further comprising a gripped portion extending from the holding portion on the second surface side of the holding portion opposite to the holding surface.
JP2017144434A 2017-07-26 2017-07-26 Blade holder Active JP6938084B2 (en)

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CN201810810709.6A CN109304817B (en) 2017-07-26 2018-07-23 Tool holding device
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