EP0425789A2 - Lame de scie circulaire - Google Patents

Lame de scie circulaire Download PDF

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Publication number
EP0425789A2
EP0425789A2 EP90116622A EP90116622A EP0425789A2 EP 0425789 A2 EP0425789 A2 EP 0425789A2 EP 90116622 A EP90116622 A EP 90116622A EP 90116622 A EP90116622 A EP 90116622A EP 0425789 A2 EP0425789 A2 EP 0425789A2
Authority
EP
European Patent Office
Prior art keywords
blade
grooves
cutting
tooth
rotary cutting
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.)
Withdrawn
Application number
EP90116622A
Other languages
German (de)
English (en)
Other versions
EP0425789A3 (en
Inventor
Shohei Omi
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.)
Omi Kogyo Co Ltd
Original Assignee
Omi Kogyo Co Ltd
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 Omi Kogyo Co Ltd filed Critical Omi Kogyo Co Ltd
Publication of EP0425789A2 publication Critical patent/EP0425789A2/fr
Publication of EP0425789A3 publication Critical patent/EP0425789A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/121—Circular saw blades

Definitions

  • the present invention relates generally to rotary saw blades suitable for cutting concrete, tile, stone and the like. More particularly, an improved cutting tooth design and arrangement is disclosed.
  • Rotary saw blades are generally known. Representative prior art blades are shown in Figures 10 and 11. Such saw blades may include a disc shaped blade body 21 having a plurality of notches 22 cut into its circumferential surface at substantially equal intervals, thus forming lands 23 in the regions between adjacent notches.
  • the cutting teeth 24 are typically specially fabricated with a diamond powder abrasive material to maximize their cutting strength.
  • the teeth are coaxially mounted such that their outer peripheral surfaces 25 are equidistant from the blade's rotational axis 26. Thus, when the cutting blade engages a work 27 during cutting, the peripheral teeth surfaces 25 evenly come into contact with the work.
  • a reinforcing member is provided as a base for a pair of diamond impregnated cutting segments.
  • the cutting segments are fixed to the reinforcing member such that a gap is formed in the central portion of the outer peripheral surface of each segment.
  • the gap decreases the effective cutting area of the outer segment which is asserted to improve cutting efficiency.
  • the geometry of the reinforcing member may be varied to further improve the cutting efficiency.
  • the only gaps contemplated in the aforementioned patent are formed in the central portion of each cutting segment. Thus, they do not reduce wear on the outer peripheral surfaces of the cutting segment to the desired extent.
  • a rotary cutting blade having an improved cutting tooth structure includes a disc shaped blade body having an axis and a circumferential surface.
  • a plurality of abrasive impregnated cutting teeth are secured to the circumferential surface of the blade body.
  • Each cutting tooth has a substantially arcuate outer peripheral surface with a leading cutting edge.
  • a first side surface of each tooth is substantially flat while an opposing second side surface has a plurality of grooves cut into the tooth.
  • the grooves are arranged to intersect the tooth's peripheral surface.
  • the grooves cooperate with the leading edge to provide a plurality of cutting surfaces on each tooth.
  • the teeth are then arranged successively along the circumferential surface of the blade such that their respective grooved surfaces alternately face in opposing directions.
  • the rotary cutting blade includes a disc shaped main body 1 formed of a hardened steel.
  • a plurality of notches 2 are formed along the periphery of the main body 1 at substantially constant intervals.
  • a land 3 is defined between each pair of successive notches 2.
  • a plurality of arcuate shape teeth segments 4 are individually fixed to the lands such that each tooth is mounted to a single associated land 3.
  • a wide variety of conventional processes, including brazing, laser welding, sintering or the like may be utilized to fix the segments 4 to the land 3.
  • the segments 4 may be formed of a sintered alloy having an abrasive powder mixed therein of bronze, cobalt copper, tungsten and the like. Most commonly, diamond powder is used as the abrasive material.
  • the sintered segments 4 have sufficient hardness to prevent damages thereto during cutting.
  • the actual number of teeth utilized may vary widely depending upon the desired cutting characteristics, an even number of teeth are preferably provided. In the embodiment shown in Figure 1, 12 teeth are used.
  • one side surface (referred to as the first side surface hereinafter) 5 of each segment 4 is substantially flat.
  • a plurality (four in this embodiment) of grooves 8 are formed on the opposing side surface 6.(referred to as the second side surface hereinafter)
  • the grooves 8 extend from the outer peripheral surface 7 of each segment 4 to an inner peripheral surface thereof in the radial direction.
  • the grooves 8 have the same width W and are formed in parallel with one another.
  • the depth of the grooves 8 is arranged so that they penetrate approximately half way through the teeth such that the bottom surfaces 9 of the grooves 8 are located substantially in the middle (widthwise) of each segment 4.
  • the segments 4 are arranged such that the grooved surfaces of sequential segments alternate between the left and right sides of the blade.
  • the side surfaces 5 and 6 of the various segments 4 are arranged to define two parallel planes that orthogonally cross an axis 11 of the main body 1.
  • the respective bottom groove surfaces 9 are also arranged to substantially define a plane that orthogonally crosses the axis 11.
  • the outer peripheral surfaces 7 of the segments 4 are arranged cylindrically about the axis 11.
  • the blade is fitted to a cutting saw or grinder or the like (not shown).
  • a work is to be cut and machined by means of the foregoing rotary cutting blades
  • the blade is rotated at a high speed and the blade is brought into contact with the work 10 to be machined.
  • the leading edge of each segment together with the trailing edges of each groove cooperates to provide a plurality of cutting surfaces on each segment.
  • Figure 4 is a diagramatic end view showing the outer peripheral surfaces 7 of a pair of the successive segments 4.
  • A represents the length of an outer peripheral edge of the first side surface 5
  • B represents the length of a central portion passing through the grooves 8
  • C represents the commulative outer peripheral edge of the second side surface 6.
  • A, B, and C are indicative of the blade's effective cutting length since A, B, and C are all actually involved in cutting.
  • the grooves 8 extend from the outer peripheral surfaces 7 of the segments 4 all the way down to the inner peripheral surface thereof in the radial direction.
  • the grooves 8 can be formed so that the grooves 5 shortly extend only a portion of the tooth's height.
  • the grooves 8 can be formed so that the grooves 8 slant relative to the radial direction.
  • the number of the segments 4 fixed to the main body 1 is twelve.
  • the number of the segments 4 can be changed, for example, six or the like. Best results are obtained when an even number of segments are used.
  • the number of the grooves 8 of each segment 4 is four.
  • the number of the grooves 8 can be changed as well. By way of example, five or the like grooves may be cut into each segment.
  • each groove 8 is formed in a channel shape and the width W of the various grooves 8 are all equal.
  • the grooves 8 can be formed so that they have different widths and are arranged alternatively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP19900116622 1989-10-31 1990-08-30 Rotary cutting blade Withdrawn EP0425789A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP127327/89U 1989-10-31
JP1989127327U JPH0753892Y2 (ja) 1989-10-31 1989-10-31 回転切削刃

Publications (2)

Publication Number Publication Date
EP0425789A2 true EP0425789A2 (fr) 1991-05-08
EP0425789A3 EP0425789A3 (en) 1991-11-27

Family

ID=14957191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900116622 Withdrawn EP0425789A3 (en) 1989-10-31 1990-08-30 Rotary cutting blade

Country Status (2)

Country Link
EP (1) EP0425789A3 (fr)
JP (1) JPH0753892Y2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9106366U1 (fr) * 1991-05-23 1991-08-08 Friedrich Busse Diamantwerkzeuge Gmbh + Co., 8540 Schwabach, De
EP0629472A1 (fr) * 1993-06-17 1994-12-21 Tyrolit Schleifmittelwerke Swarovski KG Outil abrasif avec liant métalligue et charge active
EP1114696A1 (fr) * 1999-02-26 2001-07-11 Sankyo Diamond Industrial Co., Ltd. Lame circulaire a diamant
CN101594957B (zh) * 2007-02-02 2012-09-05 赵星行 切割刀头
WO2014005079A1 (fr) * 2012-06-29 2014-01-03 Saint-Gobain Abrasives, Inc. Article abrasif comprenant des segments abrasifs interchangeables réversibles
CN108527689A (zh) * 2018-06-13 2018-09-14 珠海市新威精密机械有限公司 一种专用型金刚石切割机
CN109454291A (zh) * 2019-01-14 2019-03-12 衡水富锐达工具有限公司 一种锯片

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100643217B1 (ko) * 2005-02-01 2006-11-10 이창현 물결형 가공팁 및 이를 구비한 가공휠
KR101157569B1 (ko) * 2010-02-12 2012-06-19 이화다이아몬드공업 주식회사 절삭공구
JP2012111005A (ja) * 2010-11-25 2012-06-14 Mitsubishi Materials Corp 薄刃砥石

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB580867A (en) * 1944-04-08 1946-09-23 Impregnated Diamond Prod Ltd Improvements in or relating to circular saws for cutting stone and the like
US4461268A (en) * 1982-01-04 1984-07-24 Jiro Inoue Diamond saw
EP0185136A1 (fr) * 1984-11-26 1986-06-25 Ikuo Shiga Meule diamantée à découper
EP0229404A1 (fr) * 1985-12-13 1987-07-22 HS VEGLIO S.r.l. Segments et éléments de coupe rapportés diamantés
JPS62277270A (ja) * 1986-05-21 1987-12-02 Osaka Daiyamondo Kogyo Kk 超砥粒切断砥石

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS612764U (ja) * 1984-06-12 1986-01-09 ジエコ−株式会社 モ−タの取付け構造
JPS61142076A (ja) * 1985-01-21 1986-06-28 Niro Inoue セグメント型ダイヤモンドソ−
JPS6374272U (fr) * 1986-10-31 1988-05-18

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB580867A (en) * 1944-04-08 1946-09-23 Impregnated Diamond Prod Ltd Improvements in or relating to circular saws for cutting stone and the like
US4461268A (en) * 1982-01-04 1984-07-24 Jiro Inoue Diamond saw
EP0185136A1 (fr) * 1984-11-26 1986-06-25 Ikuo Shiga Meule diamantée à découper
EP0229404A1 (fr) * 1985-12-13 1987-07-22 HS VEGLIO S.r.l. Segments et éléments de coupe rapportés diamantés
JPS62277270A (ja) * 1986-05-21 1987-12-02 Osaka Daiyamondo Kogyo Kk 超砥粒切断砥石

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 12, no. 160 (M-697)[3007], 14th May 1988; & JP-A-62 277 270 (OSAKA DAIYAMONDO KOGYO K.K.) 02-12-1987 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9106366U1 (fr) * 1991-05-23 1991-08-08 Friedrich Busse Diamantwerkzeuge Gmbh + Co., 8540 Schwabach, De
EP0629472A1 (fr) * 1993-06-17 1994-12-21 Tyrolit Schleifmittelwerke Swarovski KG Outil abrasif avec liant métalligue et charge active
EP1114696A1 (fr) * 1999-02-26 2001-07-11 Sankyo Diamond Industrial Co., Ltd. Lame circulaire a diamant
EP1114696A4 (fr) * 1999-02-26 2007-01-24 Sankyo Diamond Ind Co Ltd Lame circulaire a diamant
CN101594957B (zh) * 2007-02-02 2012-09-05 赵星行 切割刀头
WO2014005079A1 (fr) * 2012-06-29 2014-01-03 Saint-Gobain Abrasives, Inc. Article abrasif comprenant des segments abrasifs interchangeables réversibles
CN104582903A (zh) * 2012-06-29 2015-04-29 圣戈班磨料磨具有限公司 具有可翻转互换的研磨区段的研磨制品
CN108527689A (zh) * 2018-06-13 2018-09-14 珠海市新威精密机械有限公司 一种专用型金刚石切割机
CN108527689B (zh) * 2018-06-13 2024-05-28 江阴市弘全机械科技有限公司 一种专用型金刚石切割机
CN109454291A (zh) * 2019-01-14 2019-03-12 衡水富锐达工具有限公司 一种锯片

Also Published As

Publication number Publication date
JPH0365663U (fr) 1991-06-26
JPH0753892Y2 (ja) 1995-12-13
EP0425789A3 (en) 1991-11-27

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