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WO2015098360A1 - Dispositif de coupe - Google Patents

Dispositif de coupe Download PDF

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Publication number
WO2015098360A1
WO2015098360A1 PCT/JP2014/080458 JP2014080458W WO2015098360A1 WO 2015098360 A1 WO2015098360 A1 WO 2015098360A1 JP 2014080458 W JP2014080458 W JP 2014080458W WO 2015098360 A1 WO2015098360 A1 WO 2015098360A1
Authority
WO
WIPO (PCT)
Prior art keywords
angle
cutter
cutting blade
flank
rake face
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2014/080458
Other languages
English (en)
Japanese (ja)
Inventor
神田　保之
清重 古川
孝三 大橋
利生 魚住
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanefusa Corp
Original Assignee
Kanefusa Corp
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.)
Filing date
Publication date
Application filed by Kanefusa Corp filed Critical Kanefusa Corp
Publication of WO2015098360A1 publication Critical patent/WO2015098360A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/04—Circular saw blades with inserted saw teeth, i.e. the teeth being individually inserted

Definitions

  • This invention relates to a cutter for cutting a V-shaped groove.
  • a chip saw in which a chip is brazed to the outer peripheral edge of a disk-shaped base metal is used to cut a V-shaped groove on a printed circuit board which is a plate material such as resin, aluminum or copper (for example, (See Patent Document 1).
  • the chip 50 (refer to FIG. 6) of Patent Document 1 is formed in a mountain shape that is inclined (set angle ⁇ 0 °) so that both side surfaces 52, 52 approach each other as they go radially outward. Then, the chip 50 cuts the printed circuit board (workpiece) W by the dominant edge set at the side edge of the rake face 54 set at the positive rake angle ⁇ in the range of 10 ° to 20 °. Yes.
  • the tip (blade edge) 50a of the tip 50 that has entered the workpiece W during cutting precedes the front side in the rotational direction.
  • a load is applied to the tip 50a of the chip 50.
  • the tip 50a of the chip 50 is pointed in a mountain shape to form the V-shaped groove Wa, there is a difficulty in that the tip 50a is easily chipped when a load is applied to the tip 50a. Improvement of the durability of the chip 50 is required.
  • the present invention has been proposed to solve these problems in view of the problems inherent in the prior art, and it is an object of the present invention to provide a cutter provided with a cutting blade having excellent durability. .
  • the cutter of the invention In a cutter that has a plurality of cutting blades provided at intervals in the circumferential direction on the outer periphery of the disk body, and cuts a V-shaped groove with a cutting blade whose clam angle on both side surfaces is set to be negative,
  • the gist of the cutting blade is that the rake angle at the position where the outer diameter of the cutter is maximum is set to 0 ° or a negative angle.
  • tip of a cutting blade can be reduced by setting a cutting blade by 0 degree or a negative rake angle. Therefore, chipping at the tip of the cutting blade can be suppressed and the life of the cutting blade can be improved.
  • the cutting blade has a rake face lead angle set at a positive angle so that one side edge of the rake face is a dominant edge.
  • the gist is that the cutting blades adjacent to each other in the circumferential direction have different lead directions.
  • the invention which concerns on Claim 2 by setting a lead angle so that the side edge of one side of a rake face may become a dominant edge in a cutting blade, generation
  • the cutting blades adjacent to each other in the rotation direction have different lead directions, the cutter can suppress the vibration of the cutter and stably cut the work material.
  • the outer periphery of the said disc body is provided with two or more stepping parts to which the chip
  • the gist of the chip is that the base side face and the rake face of the chip cross each other at an angle, and that the base side face and the side face of the disc body are aligned.
  • the invention which concerns on Claim 3 since it has comprised so that the base side surface of a chip
  • the cutting blade is connected to the first outer peripheral flank face connected to the position where the outer diameter of the cutter is maximum, and to the rear side in the rotational direction of the first outer peripheral flank face.
  • the gist of the present invention is to provide a second outer peripheral flank having a larger outer peripheral flank angle than the first outer peripheral flank.
  • by configuring the outer peripheral flank with the first outer flank and the second outer flank having a larger outer flank angle than the first outer flank It becomes possible to set the outer peripheral clearance angle of the first outer peripheral clearance surface small. Thereby, since the rigidity of the front-end
  • the cutter according to the present invention is excellent in the durability of the cutting blade.
  • FIG. 2 It is a side view which shows the cutter which concerns on the suitable Example of this invention. It is a side view which expands and shows the principal part of the cutter of an Example.
  • (a) is a view from arrow A in FIG. 2
  • (b) is a view from arrow B in FIG. 2
  • (c) is a view from arrow C in FIG.
  • (a) is a view on arrow D in FIG. 2
  • (b) is a view on arrow E in FIG.
  • the cutter according to the present invention is suitably used for cutting to form a V-shaped groove Wa on a work (work material) W (see FIG. 5) such as a printed circuit board made of a plate material such as resin, aluminum, or copper. It is something that can be done.
  • the cutter 10 has a plurality of chips 20 provided on the outer periphery of a substantially disk-shaped base metal (disk body) 12 at intervals in the circumferential direction.
  • the cutter 10 is set in a processing apparatus by fitting a support shaft (not shown) in a shaft hole 12 a formed through the center of the base metal 12. Then, the cutter 10 is rotated in one direction with a virtual axis passing through the center in the thickness direction (rotation axis direction) of the base metal 12 as the rotation center O, and the cutter 10 is provided with a cutting blade 22 provided on the chip 20. W is cut (see FIG. 5).
  • the tip 20 is disposed on each of the tooth bodies 14 formed on the outer periphery of the base metal 12.
  • the base metal 12 is made of steel such as carbon tool steel or alloy tool steel.
  • a plurality of tooth bodies 14 formed to extend outward in the radial direction are spaced apart from each other at regular intervals in the rotation direction.
  • a tooth bag 16 capable of accommodating cutting waste of the workpiece W generated when cutting with the tip 20 is formed between the tooth bodies 14 and 14 adjacent to each other in the rotation direction on the front side in the rotation direction of each tip 20.
  • Each tooth body 14 has a stepped portion 14a formed in a step shape on the front side in the rotational direction.
  • the chip 20 is accommodated in the stepped portion 14a, and the chip 20 and the base metal 12 are joined by brazing. Is done.
  • the plurality of tooth bodies 14 are formed in the same shape, and the stepped portions 14a of the plurality of tooth bodies 14 are formed in the same shape.
  • the plurality of chips 20 are basically formed in the same shape except for the inclination direction (lead direction) of the lead angle ⁇ described later, and all the tooth bags 16 have the same shape. It has become.
  • the chip 20 is made of cemented carbide, cermet, CBN (cubic boron nitride), polycrystalline diamond (PCD), or the like. Further, the chip 20 may form a film on the outer surface.
  • the coating may have a single layer structure or a multilayer structure in which the same or different ones are stacked, and a metal, nitride, carbide, one or more elements such as chromium, titanium, aluminum, etc. Mention may be made of layers of carbonitrides, oxides, oxynitrides and the like.
  • the chip 20 of the embodiment is a composite material in which PCD is laminated on the surface layer of a base layer made of a cemented carbide, and the rake face 28 of the cutting blade 22 is formed by the PCD constituting the front surface in the rotational direction of the chip 20. (See FIG. 2). 1 to 5, the boundary line between the base layer and the surface layer is not shown. Further, the chip 20 is cut out so that the root side face 25 and the rake face 28 in the chip 20 are obliquely crossed in order to give a lead angle ⁇ to the rake face 28, and then a base layer made of a cemented carbide. Is formed according to the lead angle ⁇ .
  • the back surface of the chip 20 to be joined to the vertical wall surface of the stepped portion 14a and the root side surface 25 of the chip 20 are orthogonal to each other, and the root side surface 25 and the rake face 28 are inclined.
  • the chip 20 is formed such that the base side surface 25 is flush with the side surface of the base metal 12 when bonded to the stepped portion 14 a. That is, the chip 20 is set so that the width between the base side surfaces is the same as the thickness of the base metal 12.
  • the chip 20 has a back surface extending rearward in the rotational direction joined to the vertical wall surface of the stepped portion 14a, and a bottom surface extending radially inward of the base metal 12 joined to the bottom wall surface of the stepped portion 14a. (See FIG. 2).
  • the cutting blade 22 provided on the tip 20 has a pair of side surfaces 24, 24 facing the width direction (rotational axis direction) of the tip 20 and the radially outer side of the tip.
  • the outer peripheral flank 26 and the rake face 28 formed so as to face the tooth bag 16 and facing the front side in the rotational direction are basically constituted.
  • the outer peripheral flank 26 has a short blade length (width in the rotation axis direction of the cutter 10), it is indicated by a line rather than a plane in FIG.
  • the ridge formed by the outer peripheral flank face 26 and the rake face 28 is the cutting edge 30 (the position where the outer diameter of the cutter is maximized) located on the outermost radial direction of the cutting blade 22.
  • a cutting edge 30 is set at the pointed tip of the tip 20.
  • the cutting edge 30 of the embodiment is a straight blade having a blade length of 0.02 mm to 0.1 mm.
  • the cutting blade 22 is formed so that the tip end on the radially outer side of the tip 20 becomes thinner (thinner) in the rotation axis direction from the radially inner side to the radially outer side.
  • the cutting edge 22 has a set angle ⁇ of each side surface 24 that is negative ( ⁇ ) with respect to a virtual reference line Lc that connects points that are V-shaped vertices of the chip 20 perpendicularly from the rotation axis. ⁇ 0 °).
  • the root side surface 25 of the chip 20 has a set angle of 0 °, and the base side surface 25 of the chip 20 is aligned with the side surface of the base metal 12.
  • the set angle ⁇ of both the side surfaces 24 and 24 is set to be the same, and both the side surfaces 24 and 24 are symmetrical with the reference line Lc sandwiched in the rotation axis direction.
  • the outer peripheral flank 26 has a radius from the cutting edge 30 toward the rear side in the rotation direction with respect to a plane orthogonal to a virtual center line Lo connecting the rotation center O and the cutting edge 30 with a straight line. It is formed so as to tilt inward.
  • the cutting blade 22 in which the negative set angle ⁇ is set on both side surfaces 24, 24 is formed in a sharp ridge shape in which the outer peripheral flank 26 is continuous in the rotation direction.
  • the cutting blade 22 has a plurality of outer peripheral flank surfaces 26.
  • the cutting blade 22 according to the embodiment includes an outer peripheral flank (referred to as a first outer peripheral flank 26A) that constitutes the cutting edge 30 connected to a position where the outer diameter of the cutter 10 is maximized in the cutting blade 22, and the first.
  • An outer peripheral flank face (referred to as a second outer peripheral flank face 26B) formed continuously to the rear side in the rotational direction of the outer peripheral flank face 26A.
  • the first outer clearance angle ⁇ 1 of the first outer peripheral clearance surface 26A is set in the range of 1 ° to 5 °.
  • the relationship between the extending length of the first outer circumferential flank 26A in the rotational direction and the first outer circumferential flank angle ⁇ 1 is that the first outer circumferential flank 26A does not protrude radially outward from the rotation locus R of the cutting edge 30; 26 A of 1st outer peripheral flank is set so that it may extend with the inclination angle approximated to the radial inside of this rotation locus R.
  • the second outer peripheral flank 26B is set to have an outer peripheral flank angle ⁇ 2 larger than that of the first outer peripheral flank 26A.
  • the second outer peripheral clearance surface 26B is set such that the second outer peripheral clearance angle ⁇ 2 with respect to the tangent to the blade edge 30 is in the range of 10 ° to 15 °.
  • the rake angle ⁇ of the rake face 28 of the cutting edge 30 at which the outer diameter of the cutter 10 is maximized is 0 ° or a negative angle ( ⁇ ⁇ 0 °).
  • the rake face 28 of the embodiment is formed as a flat plane over the entire radial direction and width direction, and is set so that the rake angle ⁇ with respect to the center line Lo becomes a negative angle. That is, the rake face 28 is formed so as to incline forward in the rotational direction as it goes from the radially outer side to the inner side.
  • the rake angle ⁇ is set in the range of ⁇ 15 ° to 0 °, and preferably ⁇ 15 °.
  • the cutting blade 22 has a positive lead angle ⁇ of the rake face 28 so that one side edge of the rake face 28 becomes a dominant edge 32. Is set.
  • the dominant edge 32 formed by a ridge line formed by one side edge of the rake face 28 and one side face 24 connected to the one side edge is located on the front side in the rotational direction with respect to the other side edge of the rake face 28. It is extended.
  • the lead angle ⁇ is set in the range of 10 ° to 20 °.
  • the cutting blades 22 and 22 adjacent to each other in the rotation direction are set so that the dominant blades 32 are provided on different side edges of the rake faces 28 and 28 and the lead directions are different from each other.
  • the side edges of the rake face 28 on which the dominant edge 32 is provided are set alternately in the plurality of cutting blades 22 arranged in the rotation direction (see FIGS. 1 and 2).
  • the rotational direction The cutting blades 22 adjacent to each other are provided with a lead angle ⁇ that inclines toward the rear in the rotational direction from the left edge toward the right edge so that a dominant edge 32 is formed on the left edge of the rake face 28.
  • the intermediate portion of the rake face 28 that precedes the front side in the rotation direction when the workpiece W is cut has rigidity than the tapered cutting edge 30. Therefore, damage such as chipping of the cutting edge 30 of the cutting blade 22 can be suppressed, the cutting edge 22 can be kept long, and the life of the cutting blade 22 can be improved.
  • the cutting blade 22 is configured by configuring the outer peripheral flank with a first outer flank 26A and a second outer flank 26B having a larger outer flank angle ⁇ than the first outer flank 26A.
  • the first outer clearance angle ⁇ 1 of the first outer clearance surface 26A can be set small. That is, by configuring the outer peripheral flank 26 in two stages, the extending length in the rotation direction of the first outer flank 26A is shortened so that the first outer flank 26A becomes the rotation locus R of the cutting edge 30. It can be set with an approximate slope. Thereby, since the rigidity of the blade edge
  • the lead angle ⁇ is set so that the side edge on one side of the rake face 28 in the cutting blade 22 becomes the dominant edge 32, so that generation of burrs when the workpiece W is cut can be suppressed.
  • the cutting blade 22 is set so that the rake face 28 is set at 0 ° or a negative rake angle ⁇ and the intermediate portion of the rake face 28 precedes the front side in the rotation direction when the workpiece W is cut.
  • the dominant blade 32 formed on the side edge on one side of the surface 28 appropriately hits the workpiece W, and the workpiece W can be suitably cut by the sharpness of the dominant blade 32.
  • the cutter 10 is set so that the cutting blades 22 and 22 adjacent to each other in the rotation direction have different lead directions, it is possible to stably cut the workpiece W while suppressing the vibration of the cutter 10. it can.
  • the cutter 10 is configured such that the base side surface 25 of the chip 20 and the side surface of the base metal 12 are aligned, it is easy to position the cutter 10 in the rotation axis direction when the chip 20 is joined to the base metal 12. become. Further, since the chip 20 is bonded to the stepped portion 14 a provided on the base metal 12, the bonding area of the chip 20 can be ensured.
  • the cutter 10 of the example and the cutter of the comparative example have an outer diameter (diameter) of 120 mm, the number of teeth is set to 24, and teeth provided on the outer peripheral portion of the base metal 12 made of carbon tool steel having a thickness of 2 mm. This is also called a chip saw in which the chips 20 and 50 are joined to each of the bodies 14.
  • the chip 20 of the example and the chip 50 of the comparative example are composite materials in which a surface layer made of polycrystalline diamond (PCD: mixed particles of 40 ⁇ m + 16 ⁇ m) is laminated on a base layer made of cemented carbide.
  • PCD polycrystalline diamond
  • the set angle of each dominant blade 32 is -17.5 ° (V angle of the tip: 35 °), and the rake angle of the rake face 28 constituting the cutting edge 30 is the same.
  • the lead angle of the rake face 28 is set to 10 °.
  • the outer peripheral flank 26 is formed in two stages, the extending length of the first outer flank 26A constituting the cutting edge 30 is 0.2 mm, and the outer flank angle ⁇ 1 is In addition to being set to 1 °, the outer peripheral clearance angle ⁇ 2 of the second outer peripheral clearance surface 26B connected to the first outer peripheral clearance surface 26A is set to 10 °.
  • the tip 50 of the comparative example (see FIG. 6) has a set angle of each side 52 of -17.5 ° (V angle of the tip: 35 °), and a rake angle of the rake face 54 constituting the blade edge is + 5 °.
  • the lead angle of the rake face 54 is set to 0 °.
  • the tip 50 of the comparative example has an outer peripheral flank 56 formed in a single stage, and the outer peripheral flank angle of the outer peripheral flank 56 constituting the cutting edge is set to 10 °.
  • the processing conditions such as the number of rotations were set to be the same, and the V-shaped groove Wa was cut into the workpiece W, the cutter of the example 10 was confirmed to be 10 times more durable than the cutter of the comparative example.
  • the present invention is not limited to the above-described configuration, and can be modified as follows, for example.
  • the rake face and the flank face may be one step or three or more steps.
  • first rake face is 0 ° or a negative rake angle ⁇
  • another rake face (second rake face) connected radially inward of this rake face is set to a positive rake angle. May be.
  • the cutting edge of the side edge that does not become the dominant edge may be changed from the set angle of the side edge that becomes the dominant edge so that the side edge that does not become the dominant edge does not directly participate in cutting.
  • the outer diameter of the side edge that does not become the dominant blade may be smaller (inward in the radial direction) than the outer diameter of the side edge that becomes the dominant blade.
  • the cutting edge of the cutting blade is not limited to a straight blade, and the side edge between the side surfaces may be formed in a tapered shape or a curved shape, or the entire cutting edge may be formed in a curved shape.
  • the chip may be formed so that the base side surface is parallel to the side surface of the base metal (disk body) when joined to the stepped portion. Moreover, you may set the chip

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

　L'invention porte sur un dispositif de coupe, lequel dispositif comporte des lames de coupe ayant une excellente durée de vie. Le dispositif de coupe (10) a une pluralité de lames de coupe (22) comportant des espaces entre elles dans la direction périphérique sur la périphérie externe d'une base métallique (12), et lequel dispositif de coupe est conçu de façon à couper une rainure en forme de V dans une pièce à travailler à l'aide des lames de coupe (22), dont les surfaces latérales (24, 24) sont établies selon un angle défini négatif (δ). L'angle de pente (α) des lames de coupe (22) dans la position où le diamètre externe du dispositif de coupe est le plus grand est établi à 0° ou à un angle négatif. Également, l'angle d'inclinaison des lames de coupe (22) est établi de telle sorte qu'un bord latéral de la face de pente (28) est la lame dominante (32).
PCT/JP2014/080458 2013-12-27 2014-11-18 Dispositif de coupe Ceased WO2015098360A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-272234 2013-12-27
JP2013272234A JP2015123574A (ja) 2013-12-27 2013-12-27 カッター

Publications (1)

Publication Number Publication Date
WO2015098360A1 true WO2015098360A1 (fr) 2015-07-02

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Application Number Title Priority Date Filing Date
PCT/JP2014/080458 Ceased WO2015098360A1 (fr) 2013-12-27 2014-11-18 Dispositif de coupe

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JP (1) JP2015123574A (fr)
WO (1) WO2015098360A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018001335A (ja) * 2016-06-30 2018-01-11 株式会社谷テック コンポジット材用チップソー
JP2018043304A (ja) * 2016-09-13 2018-03-22 川崎重工業株式会社 金属含有物の切断方法および切断システム
US10583505B2 (en) * 2015-08-24 2020-03-10 Kanefusa Kabushiki Kaisha Circular saw blade with tips
EP3626374A1 (fr) 2018-09-20 2020-03-25 Leitz GmbH & Co. KG Lame de scie circulaire montée tangentiellement et son procédé de réaffûtage
WO2024227906A1 (fr) * 2023-05-03 2024-11-07 Ra Jacobsen Kenneth Système permettant d'augmenter la précision de coupe de nattes isolantes à base de fibres.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000052140A (ja) * 1998-08-05 2000-02-22 Fuji Giken Kogyo Kk 円形カッター
JP2004230531A (ja) * 2003-01-31 2004-08-19 Allied Material Corp 回転鋸
JP2012086353A (ja) * 2010-10-15 2012-05-10 Osamu Kobayashi 回転工具

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000052140A (ja) * 1998-08-05 2000-02-22 Fuji Giken Kogyo Kk 円形カッター
JP2004230531A (ja) * 2003-01-31 2004-08-19 Allied Material Corp 回転鋸
JP2012086353A (ja) * 2010-10-15 2012-05-10 Osamu Kobayashi 回転工具

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10583505B2 (en) * 2015-08-24 2020-03-10 Kanefusa Kabushiki Kaisha Circular saw blade with tips
JP2018001335A (ja) * 2016-06-30 2018-01-11 株式会社谷テック コンポジット材用チップソー
EP3263259B1 (fr) * 2016-06-30 2023-07-12 Tanitec Corporation Scie à plaquettes pour matériau composite
JP2018043304A (ja) * 2016-09-13 2018-03-22 川崎重工業株式会社 金属含有物の切断方法および切断システム
EP3626374A1 (fr) 2018-09-20 2020-03-25 Leitz GmbH & Co. KG Lame de scie circulaire montée tangentiellement et son procédé de réaffûtage
DE102018123117A1 (de) * 2018-09-20 2020-03-26 Leitz Gmbh & Co. Kg Tangential bestücktes Kreissägeblatt und Verfahren zu dessen Nachschärfen
WO2024227906A1 (fr) * 2023-05-03 2024-11-07 Ra Jacobsen Kenneth Système permettant d'augmenter la précision de coupe de nattes isolantes à base de fibres.

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