JPH10329034A - Manufacturing method of segment chip - Google Patents
Manufacturing method of segment chipInfo
- Publication number
- JPH10329034A JPH10329034A JP15585897A JP15585897A JPH10329034A JP H10329034 A JPH10329034 A JP H10329034A JP 15585897 A JP15585897 A JP 15585897A JP 15585897 A JP15585897 A JP 15585897A JP H10329034 A JPH10329034 A JP H10329034A
- Authority
- JP
- Japan
- Prior art keywords
- chip
- cutting
- center
- segment
- water
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000005520 cutting process Methods 0.000 claims abstract description 63
- 239000011812 mixed powder Substances 0.000 claims abstract description 29
- 238000005245 sintering Methods 0.000 claims abstract description 28
- 239000011230 binding agent Substances 0.000 claims abstract description 26
- 239000000126 substance Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 36
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 12
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical group [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 11
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 10
- 235000011152 sodium sulphate Nutrition 0.000 claims description 10
- 229910003460 diamond Inorganic materials 0.000 claims description 9
- 239000010432 diamond Substances 0.000 claims description 9
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 4
- 239000001110 calcium chloride Substances 0.000 claims description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 4
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 239000004552 water soluble powder Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000006061 abrasive grain Substances 0.000 description 8
- 229910002804 graphite Inorganic materials 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000010438 granite Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 239000011135 tin Substances 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical group Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 235000007715 potassium iodide Nutrition 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
(57)【要約】
【課題】チップの中央部に柱状の空間を有し、研削液や
切り屑の排出性に優れ、良好な切れ味を有する切断砥石
のセグメントチップの製造方法を提供する。
【解決手段】超砥粒と結合材の混合粉末を焼結により成
形するセグメントチップの製造方法において、焼結型に
充填した超砥粒と結合材の混合粉末の中央部に水溶性物
質からなる柱状の成形品を埋め込み、超砥粒と結合材の
混合粉末を焼結したのち、水溶性物質を水により溶解し
除去することを特徴とする、チップの中央部に柱状の空
間を有する切断砥石のセグメントチップの製造方法。
(57) [Problem] To provide a method of manufacturing a segment chip of a cutting wheel having a columnar space in the center of the chip, excellent discharge of grinding fluid and chips, and excellent sharpness. In a method of manufacturing a segment chip for forming a mixed powder of superabrasive grains and a binder by sintering, a center portion of the mixed powder of the superabrasive grains and the binder filled in a sintering mold is made of a water-soluble substance. A cutting whetstone with a columnar space in the center of a chip, characterized by embedding a columnar molded product, sintering a mixed powder of superabrasives and a binder, and then dissolving and removing a water-soluble substance with water. Manufacturing method of segment chip.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、セグメントチップ
の製造方法に関する。さらに詳しくは、本発明は、チッ
プの中央部に柱状の空間を有し、研削液や切り屑の排出
性に優れ、良好な切れ味を有する切断砥石のセグメント
チップの製造方法に関する。The present invention relates to a method for manufacturing a segment chip. More specifically, the present invention relates to a method for manufacturing a segment chip of a cutting wheel having a columnar space at the center of the chip, having excellent discharge of grinding fluid and chips, and having good sharpness.
【０００２】[0002]
【従来の技術】石材やコンクリートの切断に用いる回転
円板型や往復動鋸型の切断砥石用のセグメントチップ
は、切断の際の研削液や切り屑の排出をよくし、チップ
の摩耗形状を制御し、切れ味を向上させるために、中央
部に凹溝や空間を設けることが試みられている。例え
ば、実公昭５６−７４１０号公報には、刃物チップの中
央部に切削方向に向かって両側辺を残す凹溝を形成する
とともに、該凹溝の端部又は中央部に前記両辺をつなぐ
壁面を、該両側辺と同材質で一体成形した硬質材料の切
断用カッターが提案され、このチップは従来のダイヤモ
ンドチップに比べて変形摩滅が少なく、切削屑のかき出
し効果及び切削効率が大幅に向上することが報告されて
いる。また、特開昭５８−１０４６１号公報には、中央
部に空間を有するチップを配設したダイヤモンドソーが
提案され、このチップは、寿命が終わるまで外面部断面
形が凹形を保ち、石材などの切断時に偏倚現象を生じな
いことが報告されている。このようにチップの中央部に
空間を有するセグメントチップを製造するためには、従
来は、超砥粒と結合材の混合粉末からチップを仮成形し
たのち、チップの中央部に穴を空け、そのまま焼結炉を
用いて焼結するか、あるいは、型の中央部に黒鉛棒を通
し、その周りに超砥粒と結合材の混合粉末を充填して仮
成形したのち焼結し、その後黒鉛棒を取り除くなどの方
法が行われてきた。しかし、仮成形後に穴を空けて焼結
すると、穴の形状が大きく変化し、チップの形状の制御
が困難である。また、黒鉛棒を通して焼結すると、焼結
時にメタルボンドが収縮するので、黒鉛棒を取り除く作
業に手間がかかり、コスト高になるという問題がある。
そのため、チップ形状の精度を維持したまま、簡単に製
造することができる、チップの中央部に柱状の空間を有
する切断砥石のセグメントチップの製造方法の開発が求
められていた。2. Description of the Related Art Rotating disk-type or reciprocating saw-type segment chips for cutting wheels used for cutting stones and concrete improve the discharge of grinding fluid and chips when cutting, and reduce the wear shape of the chips. Attempts have been made to provide a groove or space in the center for control and improved sharpness. For example, in Japanese Utility Model Publication No. 56-7410, a groove is formed at the center of a blade tip to leave both sides in the cutting direction, and a wall connecting the two sides is formed at an end or center of the groove. A cutting cutter for cutting hard material integrally formed of the same material as the both sides has been proposed. This cutting tip has less deformation and abrasion than a conventional diamond tip, and greatly improves the scraping effect and cutting efficiency. Have been reported. Further, Japanese Patent Application Laid-Open No. 58-10461 proposes a diamond saw in which a chip having a space in the center is arranged, and the tip has a concave outer surface section until the end of its life, and is made of stone or the like. It has been reported that no biasing phenomenon occurs when cutting. Conventionally, in order to manufacture a segment chip having a space in the center of the chip, the chip is temporarily formed from a mixed powder of superabrasive grains and a binder, and then a hole is formed in the center of the chip, and the chip is left as it is. Either sinter using a sintering furnace, or pass a graphite rod through the center of the mold, fill it with mixed powder of superabrasives and binder, temporarily mold it, and then sinter it. And other methods have been implemented. However, if a hole is formed after sintering and sintering, the shape of the hole changes greatly, and it is difficult to control the shape of the chip. Further, when sintering through a graphite rod, the metal bond shrinks at the time of sintering, so that there is a problem that the operation of removing the graphite rod takes time and costs.
Therefore, there has been a demand for the development of a method for manufacturing a segment chip of a cutting wheel having a columnar space at the center of the chip, which can be easily manufactured while maintaining the accuracy of the chip shape.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、チップの中
央部に柱状の空間を有し、研削液や切り屑の排出性に優
れ、良好な切れ味を有する切断砥石のセグメントチップ
の製造方法を提供することを目的としてなされたもので
ある。SUMMARY OF THE INVENTION The present invention relates to a method for producing a segment chip of a cutting wheel having a columnar space at the center of the chip, excellent discharge of grinding fluid and chips, and excellent sharpness. It was made for the purpose of providing.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、上記の課
題を解決すべく鋭意研究を重ねた結果、超砥粒と結合材
の混合粉末の中に水溶性物質からなる柱状の成形品を埋
め込み、混合粉末を焼結したのち水溶性物質を水を用い
て溶解除去することにより、容易に中央部に柱状の空間
を有するチップを得ることができることを見いだし、こ
の知見に基づいて本発明を完成するに至った。すなわ
ち、本発明は、（１）超砥粒と結合材の混合粉末を焼結
により成形するセグメントチップの製造方法において、
焼結型に充填した超砥粒と結合材の混合粉末の中央部に
水溶性物質からなる柱状の成形品を埋め込み、超砥粒と
結合材の混合粉末を焼結したのち、水溶性物質を水によ
り溶解し除去することを特徴とする、チップの中央部に
柱状の空間を有する切断砥石のセグメントチップの製造
方法、（２）水溶性物質が、７００℃以上の融点を有す
る第(１)項記載のセグメントチップの製造方法、（３）
水溶性粉末が、硫酸ナトリウム、塩化カルシウム、塩化
ナトリウム、塩化マグネシウム及びヨウ化カリウムより
なる群から選ばれたものである第(２)項記載のセグメン
トチップの製造方法、（４）チップの中央部の柱状の空
間が、開口部の形状が菱形の四角柱であり、菱形の対角
線の１本が切断時のチップの進行方向と平行で、対角線
の他の１本が切断時のチップの進行方向と直角であり、
かつ進行方向と平行な対角線が、進行方向と直角な対角
線より長い第(１)項記載のセグメントチップの製造方
法、及び、（５）チップの中央部の柱状の空間が、開口
部の形状がトラック形の柱状であり、トラック形の重心
を通りトラックの周上の２点を結ぶ最長の線分が切断時
のチップの進行方向と平行であり、トラック形の重心を
通りトラックの周上の２点を結ぶ最短の線分が切断時の
チップの進行方向と直角である第(１)項記載のセグメン
トチップの製造方法、を提供するものである。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that a columnar molded article made of a water-soluble substance in a mixed powder of superabrasives and a binder. Embedded chip, and after sintering the mixed powder, dissolving and removing the water-soluble substance using water, it was found that a chip having a columnar space at the center can be easily obtained. Was completed. That is, the present invention provides (1) a method for manufacturing a segment chip in which a mixed powder of superabrasive grains and a binder is formed by sintering,
A columnar molded product made of a water-soluble substance is embedded in the center of the mixed powder of the superabrasive grains and the binder filled in the sintering mold, and after sintering the mixed powder of the superabrasive grains and the binder, the water-soluble substance is removed. A method for producing a segment chip of a cutting wheel having a columnar space in the center of the chip, wherein the water-soluble substance has a melting point of 700 ° C. or more, wherein the melting point is 700 ° C. or more. Item (3):
(2) the method of manufacturing a segment chip according to (2), wherein the water-soluble powder is selected from the group consisting of sodium sulfate, calcium chloride, sodium chloride, magnesium chloride and potassium iodide; Is a quadrangular prism with an opening shape of a rhombus, one of the diagonal lines of the rhombus is parallel to the advancing direction of the chip at the time of cutting, and the other diagonal line is the advancing direction of the chip at the time of cutting. And at right angles,
(1) The method of manufacturing a segment chip according to (1), wherein a diagonal line parallel to the traveling direction is longer than a diagonal line perpendicular to the traveling direction, and (5) a columnar space at the center of the chip has an opening shape. The longest line connecting the two points on the periphery of the track passes through the center of gravity of the track and is parallel to the traveling direction of the chip at the time of cutting. (1) The method for manufacturing a segment chip according to the above (1), wherein the shortest line segment connecting the two points is perpendicular to the advancing direction of the chip at the time of cutting.
【０００５】[0005]
【発明の実施の形態】本発明のセグメントチップの製造
方法においては、超砥粒と結合材の混合粉末を焼結によ
り成形する。本発明方法に用いる超砥粒としては、ダイ
ヤモンド砥粒及びＣＢＮ砥粒を挙げることができる。本
発明方法に用いる結合材には特に制限はなく、例えば、
金属結合材、樹脂結合材などを使用することができる。
金属結合材としては、例えば、鉄、コバルト、ニッケ
ル、銅、錫、タングステンなどの金属単体粉末、ブロン
ズなどの合金粉末、さらにこれらの金属粉末の混合物な
どを挙げることができる。樹脂結合材としては、例え
ば、フェノール樹脂、ポリイミド樹脂などを挙げること
ができる。本発明方法において、柱状の成形品として超
砥粒と結合材の混合粉末の中に埋め込む水溶性物質は、
チップの焼結温度より高い融点を有するものであれば特
に制限はないが、通常は融点が７００℃以上であること
が好ましく、融点が８００℃以上であることがより好ま
しい。このような水溶性物質としては、例えば、塩化ナ
トリウム、塩化カリウム、塩化マグネシウム、塩化カル
シウム、ヨウ化カリウム、硫酸ナトリウム、硫酸カリウ
ム、硫酸マグネシウムなどを挙げることができる。これ
らの中で、塩化ナトリウム、塩化マグネシウム、塩化カ
ルシウム、ヨウ化カリウム、硫酸ナトリウムを好適に使
用することができ、硫酸ナトリウムは、成形しやすい上
に、形状が崩れにくい粉末であり、結合材に悪影響を与
えるおそれがなく、水により溶解除去しても廃液による
環境の汚染が少ないので、特に好適に使用することがで
きる。本発明方法において、水溶性物質を柱状の成形品
とする方法には特に制限はなく、例えば、水溶性物質を
金型を用いて常温又は加熱下に圧縮成形することにより
柱状の成形品とすることができ、あるいは、湿潤した水
溶性物質を柱状に成形したのち乾燥することにより柱状
の成形品とすることができる。超砥粒と結合材の混合粉
末を焼結する際の水溶性物質の成形品の形態保持性を良
好に保つために、焼結時に与える圧力よりも高い圧力で
水溶性物質を成形することが好ましい。 本発明方法において、水溶性物質の柱状の成形品は、三
角柱、四角柱、五角柱、六角柱、円柱、楕円柱など任意
の形状とすることができ、また、柱の軸と直交する断面
が連続的に拡大又は縮小する三角錐台、四角錐台、五角
錐台、六角錐台、円錐台、楕円錐台などの形状とするこ
とができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In a method for manufacturing a segment chip according to the present invention, a mixed powder of superabrasive grains and a binder is formed by sintering. Examples of the super-abrasive grains used in the method of the present invention include diamond abrasive grains and CBN abrasive grains. There is no particular limitation on the binder used in the method of the present invention, for example,
A metal binding material, a resin binding material, or the like can be used.
Examples of the metal binder include simple metal powders such as iron, cobalt, nickel, copper, tin, and tungsten, alloy powders such as bronze, and a mixture of these metal powders. Examples of the resin binder include a phenol resin and a polyimide resin. In the method of the present invention, the water-soluble substance embedded in the mixed powder of the superabrasive grains and the binder as a columnar molded product,
There is no particular limitation as long as it has a melting point higher than the sintering temperature of the chip, but usually the melting point is preferably 700 ° C. or higher, and more preferably 800 ° C. or higher. Examples of such a water-soluble substance include sodium chloride, potassium chloride, magnesium chloride, calcium chloride, potassium iodide, sodium sulfate, potassium sulfate, and magnesium sulfate. Among them, sodium chloride, magnesium chloride, calcium chloride, potassium iodide, and sodium sulfate can be suitably used.Sodium sulfate is a powder that is easy to mold and hardly loses its shape, and is used as a binder. There is no risk of adverse effects and even if dissolved and removed with water, the environment is less polluted by waste liquid, so that it can be used particularly preferably. In the method of the present invention, there is no particular limitation on a method of forming a water-soluble substance into a columnar molded article. For example, a water-soluble substance is formed into a columnar molded article by compression molding at room temperature or under heating using a mold. Alternatively, a moist water-soluble substance may be formed into a column and then dried to obtain a column-shaped molded product. In order to maintain good shape retention of a molded product of a water-soluble substance when sintering a mixed powder of superabrasive grains and a binder, it is necessary to mold the water-soluble substance at a pressure higher than the pressure applied during sintering. preferable. In the method of the present invention, the columnar molded product of the water-soluble substance can have any shape such as a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism, a cylinder, an elliptical cylinder, and a cross section orthogonal to the axis of the column. The shape may be a truncated pyramid, a truncated pyramid, a truncated pyramid, a truncated hexagon, a truncated cone, a truncated elliptical cone, or the like that continuously expands or contracts.
【０００６】以下、図面により本発明のセグメントチッ
プの製造方法を説明する。図１は、本発明方法に使用す
る焼結型の一態様の斜視図である。焼結型は、円柱状の
型１の中にキャビティ２が形成されている。チップの焼
結に際しては、キャビティの底を下パンチの嵌合により
塞ぎ、超砥粒と結合材の混合粉末をキャビティに充填
し、キャビティの上から上パンチを嵌合し、焼結型を焼
結炉を用いて加熱するとともに、上パンチと下パンチに
圧力をかけて、超砥粒と結合材の混合粉末を焼結する。
本発明において使用する焼結型の材質には特に制限はな
く、例えば、黒鉛型、金型などを使用することができ
る。図２は、本発明方法の実施の一態様の説明図であ
る。本発明方法においては、あらかじめ所望の形状の水
溶性物質からなる柱状の成形品を作製しておく。本態様
においては、水溶性物質は図２(ａ)に斜視図を示す正四
角柱の形状の柱状の成形品３として作製されている。図
２(ｂ)に示すように、キャビティの底を下パンチ４の嵌
合により塞ぎ、使用する超砥粒と結合材の混合粉末５の
半量をキャビティに充填する。図２(ｃ)に側面図を示す
ならし型６を用いて、キャビティ中の混合粉末の表面を
ならすとともに、図２(ｄ)に示すように、表面中央部に
柱状の成形品の半分が収容される溝を形成する。次い
で、図２(ｅ)に示すように、この溝の中に柱状の成形品
を置き、残りの半量の混合粉末をキャビティに充填し
て、図２(ｆ)に示すように、超砥粒と結合材の混合粉末
の中央部に柱状の成形品を埋め込む。その後、図２(ｇ)
に示すように、キャビティの上から上パンチ７を嵌合
し、焼結炉により焼結型を加熱するとともに、上パンチ
と下パンチの間に圧力をかけて、超砥粒と結合材の混合
粉末を焼結する。焼結により混合粉末の見かけの体積は
収縮し、それに伴って水溶性物質からなる柱状の成形品
も変形する場合があり、図２(ｈ)に示すような超砥粒焼
結体８が形成される。焼結型を常温まで冷却したのち、
上パンチ及び下パンチを外して、超砥粒焼結体を取り出
す。超砥粒焼結体は、図２(ｉ)に示される斜視図のよう
に、中央部に水溶性物質からなる柱状の成形品３が埋め
込まれた状態となっている。必要に応じて、超砥粒焼結
体のバリを除去する。この超砥粒焼結体を水に浸漬し、
水溶性物質からなる柱状の成形品を溶出することによ
り、図２(ｊ)に斜視図を示す本発明の中央部に柱状の空
間９を有する切断砥石のセグメントチップ１０が完成す
る。Hereinafter, a method for manufacturing a segment chip according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of one embodiment of a sintered mold used in the method of the present invention. In the sintered mold, a cavity 2 is formed in a cylindrical mold 1. When sintering chips, the bottom of the cavity is closed by fitting a lower punch, the mixed powder of superabrasives and binder is filled into the cavity, the upper punch is fitted from above the cavity, and the sintered mold is fired. The mixed powder of the superabrasive grains and the binder is sintered by heating using a furnace and applying pressure to the upper punch and the lower punch.
The material of the sintering mold used in the present invention is not particularly limited, and for example, a graphite mold, a mold, and the like can be used. FIG. 2 is an explanatory diagram of one embodiment of the method of the present invention. In the method of the present invention, a columnar molded article made of a water-soluble substance having a desired shape is prepared in advance. In this embodiment, the water-soluble substance is produced as a columnar molded article 3 having a square prism shape whose perspective view is shown in FIG. As shown in FIG. 2B, the bottom of the cavity is closed by fitting the lower punch 4, and half of the mixed powder 5 of the superabrasive grains and the binder to be used is filled in the cavity. Using a leveling mold 6 whose side view is shown in FIG. 2 (c), the surface of the mixed powder in the cavity is leveled, and as shown in FIG. A groove to be accommodated is formed. Next, as shown in FIG. 2 (e), a columnar molded product is placed in the groove, and the remaining half of the mixed powder is filled in the cavity, and as shown in FIG. A columnar molded product is embedded in the center of the mixed powder of the binder and the binder. Then, FIG. 2 (g)
As shown in the figure, the upper punch 7 is fitted from above the cavity, the sintering furnace is heated by the sintering furnace, and pressure is applied between the upper punch and the lower punch to mix the superabrasives and the binder. Sinter the powder. The apparent volume of the mixed powder shrinks due to sintering, and accordingly, a columnar molded product made of a water-soluble substance may be deformed, and a superabrasive sintered body 8 as shown in FIG. Is done. After cooling the sintering mold to room temperature,
Remove the upper and lower punches and take out the superabrasive sintered body. As shown in the perspective view of FIG. 2 (i), the superabrasive sintered body has a columnar molded product 3 made of a water-soluble substance embedded in the center. If necessary, burrs of the superabrasive sintered body are removed. Immerse this super abrasive grain sintered body in water,
By eluting the columnar molded product made of the water-soluble substance, the segment chip 10 of the cutting wheel having the columnar space 9 in the center portion of the present invention shown in the perspective view of FIG.
【０００７】本発明方法により製造されるセグメントチ
ップの形状には特に制限はなく、例えば、図２に示すよ
うな直方体とすることができ、あるいは、図３に斜視
図、平面図、Ａ−Ａ線断面図及びＢ−Ｂ線断面図を示す
ような四角台形とすることができる。図４は、図３に示
すセグメントチップを装着した切断砥石の一部を示す斜
視図である。本発明方法により製造されるセグメントチ
ップの中央部に設けられる柱状の空間の形状には特に制
限はなく、例えば、四角柱、四角台形、四角錐台、円
柱、楕円柱などとすることができる。また、セグメント
チップの中央部の柱状の空間は、チップの研削面から反
対側の面まで貫通した形状とすることができ、あるい
は、チップの研削面にのみ開口部を有する空間とするこ
とができる。図５は、中央部の柱状の空間が研削面にの
み開口部を有し、反対側の面まで貫通していないチップ
の斜視図、平面図、Ａ−Ａ線断面図及びＢ−Ｂ線断面図
である。本発明においては、チップの中央部の柱状の空
間が、開口部の形状が菱形の四角柱であり、菱形の対角
線の１本が切断時のチップの進行方向と平行で、対角線
の他の１本が切断時のチップの進行方向と直角であり、
かつ進行方向と平行な対角線が、進行方向と直角な対角
線より長い形状とすることが好ましい。The shape of the segment chip manufactured by the method of the present invention is not particularly limited. For example, the shape may be a rectangular parallelepiped as shown in FIG. 2, or FIG. 3 is a perspective view, a plan view, and AA. A rectangular trapezoid as shown in a line sectional view and a line BB sectional view can be used. FIG. 4 is a perspective view showing a part of a cutting whetstone to which the segment chip shown in FIG. 3 is mounted. The shape of the columnar space provided at the center of the segment chip manufactured by the method of the present invention is not particularly limited, and may be, for example, a square pillar, a square trapezoid, a square truncated pyramid, a cylinder, an elliptical cylinder, or the like. In addition, the columnar space at the center of the segment chip can have a shape penetrating from the ground surface of the chip to the surface on the opposite side, or can be a space having an opening only on the ground surface of the chip. . FIG. 5 is a perspective view, a plan view, a sectional view taken along line AA and a sectional view taken along line BB of a chip in which a columnar space at the center has an opening only on the ground surface and does not penetrate to the opposite surface. FIG. In the present invention, the columnar space at the center of the chip is a quadrangular prism having a diamond-shaped opening, and one of the diagonal lines of the diamond is parallel to the advancing direction of the chip at the time of cutting, and the other diagonal line is one. The book is perpendicular to the direction of the tip when cutting,
It is preferable that a diagonal line parallel to the traveling direction is longer than a diagonal line perpendicular to the traveling direction.
【０００８】図６(ａ)は、研削面における開口部の形状
が菱形である四角柱の空間を有するセグメントチップの
斜視図であり、図６(ｂ)は、その平面図である。セグメ
ントチップの切断時の進行方向は、図６(ｂ)の矢印によ
り示す方向であるが、切断時のチップの進行方向と平行
な対角線ａの長さは、切断時のチップの進行方向と直角
な対角線ｂの長さより長い。対角線ａを対角線ｂより長
くすることにより、セグメントチップが使用によって摩
耗したとき、研削面が図６(ｃ)の側面図に示すように、
研削面の中央に進行方向に沿った溝ができて、凹状の研
削面となる。研削面が凹状となることにより、切断時に
セグメントチップが偏倚して進行することがなく、安定
して切断加工を行うことができる。本発明においては、
チップの中央部の柱状の空間が、開口部の形状が長方形
の四角柱であり、長方形の１組の辺が切断時のチップの
進行方向と平行で、他の１組の辺が切断時のチップの進
行方向と直角である形状とすることができる。図７は、
開口部の形状が長方形であるチップの斜視図、平面図、
Ａ−Ａ線断面図及びＢ−Ｂ線断面図である。本態様にお
いては、中央部の柱状の空間は、研削面から反対側の面
まで貫通し、かつ研削面から離れるにつれて柱状の空間
の断面積が小さくなる。本発明においては、チップの中
央部の柱状の空間を円柱状とすることができる。図８
は、中央部の柱状の空間が円柱状であるチップの斜視
図、平面図、Ａ−Ａ線断面図及びＢ−Ｂ線断面図であ
る。本発明においては、チップの中央部の柱状の空間
を、開口部の形状がトラック形である空間とすることが
できる。図９は、中央部の柱状の空間が、開口部がトラ
ック形の柱状であるチップの斜視図、平面図、Ａ−Ａ線
断面図及びＢ−Ｂ線断面図である。本図のチップにおい
ては、トラック形の重心を通りトラックの周上の２点を
結ぶ最長の線分ａが切断時のチップの進行方向と平行で
あり、トラック形の重心を通りトラックの周上の２点を
結ぶ最短の線分ｂが切断時のチップの進行方向と直角で
ある。トラック形の重心を通りトラックの周上の２点を
結ぶ最長の線分ａが切断時のチップの進行方向と平行で
ある形状とすることにより、セグメントチップが使用に
よって摩耗したとき、研削面が図６(ｃ)の側面図に示す
ように、研削面の中央に進行方向に沿った溝ができて、
凹状の研削面となる。研削面が凹状となることにより、
切断時にセグメントチップが偏倚して進行することがな
く、安定して切断加工を行うことができる。FIG. 6A is a perspective view of a segment chip having a square prism space in which the shape of the opening in the grinding surface is rhombic, and FIG. 6B is a plan view thereof. The traveling direction of the segment chip at the time of cutting is the direction indicated by the arrow in FIG. 6B, and the length of a diagonal a parallel to the traveling direction of the chip at the time of cutting is perpendicular to the traveling direction of the chip at the time of cutting. Longer than the length of the diagonal line b. By making the diagonal line a longer than the diagonal line b, when the segment chip is worn by use, as shown in the side view of FIG.
A groove is formed in the center of the grinding surface along the direction of travel, and a concave grinding surface is formed. Since the ground surface is concave, the segment chip does not deviate and advance during cutting, and the cutting process can be performed stably. In the present invention,
The columnar space at the center of the chip is a rectangular prism having a rectangular opening shape, one set of sides of the rectangle being parallel to the direction of movement of the chip at the time of cutting, and the other set of sides at the time of cutting. The shape can be perpendicular to the direction of travel of the chip. FIG.
A perspective view, a plan view, and a chip having a rectangular opening.
It is the sectional view on the AA line, and the BB line sectional view. In this aspect, the columnar space at the center penetrates from the grinding surface to the opposite surface, and the cross-sectional area of the columnar space decreases as the distance from the grinding surface increases. In the present invention, the columnar space at the center of the chip can be cylindrical. FIG.
FIG. 2 is a perspective view, a plan view, a cross-sectional view taken along line AA, and a cross-sectional view taken along line BB of a chip in which a columnar space at the center is a columnar shape. In the present invention, the columnar space at the center of the chip may be a space in which the opening has a track shape. FIG. 9 is a perspective view, a plan view, a sectional view taken along the line AA and a sectional view taken along the line BB of a chip in which the columnar space at the center has a track-like columnar opening. In the chip of this figure, the longest line segment a passing through the center of gravity of the track and connecting two points on the periphery of the track is parallel to the traveling direction of the chip at the time of cutting, and passes through the center of gravity of the track and is on the periphery of the track. The shortest line segment b connecting the above two points is perpendicular to the direction of travel of the chip at the time of cutting. By making the longest line segment a passing through the center of gravity of the track shape and connecting the two points on the circumference of the track parallel to the advancing direction of the chip at the time of cutting, when the segment chip is worn by use, the ground surface is As shown in the side view of FIG. 6C, a groove is formed along the traveling direction at the center of the grinding surface,
It becomes a concave grinding surface. By making the grinding surface concave,
It is possible to stably perform the cutting without the segment chips being deviated and proceeding at the time of cutting.
【０００９】本発明方法により製造されるチップの中央
部に柱状の空間を有する切断砥石のセグメントチップを
用いると、セグメントチップが使用によって摩耗したと
き、研削面が図６(ｃ)の側面図に示すように、研削面の
中央に進行方向に沿った溝ができて、凹状の研削面とな
る。研削面が凹状となることにより、切断時にセグメン
トチップが偏倚して進行することがなく、安定して切断
加工を行うことができる。中央部の柱状の空間の形状
は、円柱状であることが特に好ましい。中央部の柱状の
空間の形状を円柱状とすることにより、信頼性の高い研
削加工を行うことができる。中央部に柱状の空間を有し
ないセグメントチップを用いると、セグメントチップが
使用によって摩耗するに伴い、研削面が図６(ｄ)の側面
図に示すように、両肩部が摩耗し中央部が凸状の蒲鉾型
となる。中央部が凸状のセグメントチップは、切断時に
加工材料から不均一な応力を受けると、進行方向がずれ
て偏倚し、製品に不良を生ずるとともに、セグメントチ
ップ自身の損傷をも招きやすい。チップの肩部が摩耗し
て丸みを帯びることを防ぐために、側面に砥粒集中度の
高い砥粒層を形成したチップを用いるダイヤモンドブレ
ードが実公平６−５０１３５公報に提案されているが、
種類の異なるチップを作製する必要があるなど、手間が
かかるという問題がある。本発明方法により製造され
る、チップの中央部の柱状の空間が、開口部の形状が菱
形の四角柱であり、菱形の対角線の１本が切断時のチッ
プの進行方向と平行で、対角線の他の１本が切断時のチ
ップの進行方向と直角であり、かつ進行方向と平行な対
角線が、進行方向と直角な対角線より長い形状とするこ
とにより、セグメントチップが摩耗により寿命が尽きる
まで、安定して切断加工を行うことができる。When a segment tip of a cutting wheel having a columnar space in the center of the tip manufactured by the method of the present invention is used, when the segment tip is worn by use, the ground surface is shown in the side view of FIG. As shown, a groove is formed at the center of the grinding surface along the traveling direction, and a concave grinding surface is formed. Since the ground surface is concave, the segment chip does not deviate and advance during cutting, and the cutting process can be performed stably. The shape of the columnar space at the center is particularly preferably a columnar shape. By making the shape of the columnar space at the center part cylindrical, highly reliable grinding can be performed. When a segment tip having no columnar space in the center is used, as the segment tip is worn by use, the ground surface is worn as shown in the side view of FIG. It becomes a convex kamaboko type. When a segment chip having a convex central portion is subjected to uneven stress from a processing material at the time of cutting, the traveling direction is shifted and deviated, resulting in a defective product and easy damage to the segment chip itself. In order to prevent the shoulder portion of the tip from being worn and being rounded, a diamond blade using a tip having an abrasive layer having a high degree of concentration of abrasive grains on the side surface has been proposed in Japanese Utility Model Publication No. 6-50135.
There is a problem that it is troublesome, for example, it is necessary to manufacture different types of chips. The columnar space at the center of the chip manufactured by the method of the present invention is a quadrangular prism with an opening shape of a rhombus, and one of the diagonal lines of the rhombus is parallel to the advancing direction of the chip at the time of cutting, and the diagonal line is The other one is perpendicular to the traveling direction of the chip at the time of cutting, and the diagonal line parallel to the traveling direction is longer than the diagonal line perpendicular to the traveling direction, so that the life of the segment tip is exhausted by abrasion, Cutting can be performed stably.
【００１０】[0010]
【実施例】以下に、実施例を挙げて本発明をさらに詳細
に説明するが、本発明はこれらの実施例によりなんら限
定されるものではない。 実施例１ 無水硫酸ナトリウムを金型を用いて、常温で３トン／cm
2の圧力をかけて成形し、図２(ａ)に示す６mm×６mm×
１１mmの正四角柱を得た。粒度４０／５０のダイヤモン
ド砥粒と、コバルト、鉄、銅及び錫の混合粉末を混合
し、２５mm×１１mmの黒鉛下パンチと黒鉛外壁からなる
黒鉛型のキャビティに入れた。砥粒と金属の混合粉末の
混合物の表面をならし型を用いてならし、図２(ｄ)に示
すように正四角柱が半分埋まる形状の溝を形成し、その
溝に図２(ｅ)に示すように硫酸ナトリウムの正四角柱を
入れ、その上にさらに図２(ｆ)に示すように砥粒と金属
の混合粉末を入れて硫酸ナトリウムの正四角柱を埋め込
み、黒鉛上パンチを嵌合した。焼結型に充填したダイヤ
モンド砥粒とコバルト、鉄、銅及び錫の混合粉末の混合
物を、８００℃で、ホットプレス法により焼結し、長さ
２５mm、幅８mm、厚み１５mmで、図２(ｉ)に示すように
２５mm×８mmの面の中央部に硫酸ナトリウムの正四角柱
の底面が位置するチップを得た。このチップのバリを除
去したのち、４０℃の温水に浸漬し、硫酸ナトリウムを
温水に溶出せしめて、チップの中央部に正四角柱状の空
間を有する切断砥石のセグメントチップを得た。同じ操
作を繰り返して、同一形状のセグメントチップ７０個を
作製した。このセグメントチップを用いて、花崗岩の切
断テストを行った。直径１,０００mmの円板状のセンタ
ベースの外周部に７０個のセグメントチップを等間隔に
ロウ付けして、サーキュラソーブレードを作製した。こ
のサーキュラソーブレードを石材切断試験機に取り付
け、回転数５１０rpm、送り４ｍ／分、切り込み８mm／
回、切削水量４０リットル／分の条件で、切断部の長さ
１,５００mmの花崗岩を切断した。積算切り込み量は３
３０mm／面であり、切断ピッチは２０mmであった。この
切断において、切断時の主軸負荷は、最大負荷値の１
３.６％であった。セグメントチップの摩耗１mm当たり
の花崗岩の切断面積は、６.３ｍ2であった。また、切断
精度の指標となる曲がり範囲は、平均０.７５mm、最大
１.４８mmであった。 比較例１ 実施例１と同じ黒鉛型を用い、硫酸ナトリウムの正四角
柱を埋め込むことなく、実施例１と同じダイヤモンド砥
粒と金属混合粉末を実施例１と同じ焼結条件で焼結し、
長さ２５mm、幅８mm、厚み１５mmのセグメントチップ７
０個を作製した。このセグメントチップ７０個を、直径
１,０００mmの円板状のセンタベースの外周部に等間隔
にロウ付けして、サーキュラソーブレードを作製した。
このサーキュラソーブレードを用いて、実施例１と同じ
条件で花崗岩を切断した。この切断において、切断時の
主軸負荷は、最大負荷値の１４.９％であった。セグメ
ントチップの摩耗１mm当たりの花崗岩の切断面積は、
８.４ｍ2であった。また、切断精度の指標となる曲がり
範囲は、平均０.９１mm、最大１.６８mmであった。実施
例１及び比較例１の結果を第１表に示す。EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the present invention. Example 1 Anhydrous sodium sulfate was used in a mold at room temperature at 3 tons / cm.
2 ) to form a 6mm × 6mm ×
An 11 mm square prism was obtained. A 40/50 grain size diamond abrasive and a mixed powder of cobalt, iron, copper and tin were mixed and placed in a graphite-type cavity consisting of a graphite underpunch of 25 mm × 11 mm and a graphite outer wall. The surface of the mixture of the abrasive powder and the mixed powder of the metal is smoothed using a leveling mold, and a groove is formed in which a square prism is half-filled as shown in FIG. 2 (d). As shown in Fig. 2, a square prism of sodium sulfate was placed, and a mixed powder of abrasive grains and metal was further placed thereon as shown in Fig. 2 (f), and a square prism of sodium sulfate was embedded, and a punch on graphite was fitted. . A mixture of diamond abrasive grains and a mixed powder of cobalt, iron, copper and tin filled in a sintering mold was sintered by a hot press method at 800 ° C., and was 25 mm in length, 8 mm in width, and 15 mm in thickness. As shown in i), a chip in which the bottom surface of a square prism made of sodium sulfate was located at the center of a 25 mm × 8 mm surface was obtained. After removing the burrs of the chip, the chip was immersed in warm water of 40 ° C., and sodium sulfate was eluted in the warm water to obtain a segment chip of a cutting whetstone having a square pillar-shaped space in the center of the chip. By repeating the same operation, 70 segment chips having the same shape were produced. Using this segment tip, a cutting test of granite was performed. A circular saw blade was manufactured by brazing 70 segment chips at equal intervals to the outer periphery of a disk-shaped center base having a diameter of 1,000 mm. This circular saw blade was attached to a stone cutting tester, the rotation speed was 510 rpm, the feed was 4 m / min, and the cut was 8 mm /
The granite was cut at a cutting length of 1,500 mm with a cutting water volume of 40 l / min. The total cutting depth is 3
30 mm / plane, and the cutting pitch was 20 mm. In this cutting, the spindle load at the time of cutting is 1 of the maximum load value.
It was 3.6%. The cut area of the granite per 1 mm of abrasion of the segment tip was 6.3 m 2 . Further, the bending range serving as an index of the cutting accuracy was 0.75 mm on average and 1.48 mm at maximum. Comparative Example 1 Using the same graphite mold as in Example 1, without embedding a square prism of sodium sulfate, sintering the same diamond abrasive grains and metal mixed powder as in Example 1 under the same sintering conditions as in Example 1,
Segment chip 7 25mm long, 8mm wide and 15mm thick
0 pieces were produced. 70 segment chips were brazed at equal intervals to the outer peripheral portion of a disk-shaped center base having a diameter of 1,000 mm to produce a circular saw blade.
Using this circular saw blade, granite was cut under the same conditions as in Example 1. In this cutting, the spindle load at the time of cutting was 14.9% of the maximum load value. The cut area of granite per mm of segment chip wear is
It was 8.4 m 2 . The bending range, which is an index of the cutting accuracy, was 0.91 mm on average and 1.68 mm at maximum. Table 1 shows the results of Example 1 and Comparative Example 1.
【００１１】[0011]
【表１】 [Table 1]
【００１２】チップの中央部に正四角柱状の空間を有す
るセグメントチップを用いた実施例１と、中央部の空間
のない従来のセグメントチップを用いた比較例１を比較
すると、実施例１の主軸負荷は比較例１の主軸負荷の
０.９１倍であって、実施例１のチップは切れ味に優
れ、セグメントチップの摩耗１mm当たりの切断面積より
推算すると、実施例１のチップの寿命は比較例１のチッ
プの寿命の０.７５倍と短く、また、実施例１の曲がり
範囲は比較例１の曲がり範囲の０.８２〜０.８８倍であ
って本発明方法により製造した中央部に空間を有するセ
グメントチップを用いることにより、切断精度が向上す
ることが分かる。A comparison between Example 1 using a segment chip having a square pillar-shaped space at the center of the chip and Comparative Example 1 using a conventional segment chip having no space at the center of the chip shows that the spindle of Example 1 The load is 0.91 times the spindle load of Comparative Example 1. The tip of Example 1 is excellent in sharpness, and the life of the tip of Example 1 is estimated by the cut area per 1 mm of abrasion of the segment tip. The bending range of Example 1 is 0.82 to 0.88 times the bending range of Comparative Example 1, and the space in the center part manufactured by the method of the present invention is 0.75 times shorter than the life of the chip of Example 1. It can be seen that the use of the segment chip having the above improves the cutting accuracy.
【００１３】[0013]
【発明の効果】本発明方法によれば、チップの中央部に
柱状の空間を有し、研削液や切り屑の排出性に優れ、良
好な切れ味を有する切断砥石のセグメントチップを、精
度よく、容易かつ経済的に製造することができる。According to the method of the present invention, a segment chip of a cutting grindstone having a columnar space in the center of the chip, having excellent discharge of grinding fluid and chips, and having excellent sharpness can be obtained with high accuracy. It can be manufactured easily and economically.
【図１】図１は、焼結型の一態様の斜視図である。FIG. 1 is a perspective view of one embodiment of a sintered mold.
【図２】図２は、本発明方法の実施の一態様の説明図で
ある。FIG. 2 is an explanatory view of one embodiment of the method of the present invention.
【図３】図３は、本発明方法により製造したセグメント
チップの一態様の斜視図、平面図及び断面図である。FIG. 3 is a perspective view, a plan view, and a cross-sectional view of one embodiment of a segment chip manufactured by the method of the present invention.
【図４】図４は、図３に示すセグメントチップを装着し
た切断砥石の一部を示す斜視図である。FIG. 4 is a perspective view showing a part of a cutting grindstone to which the segment chip shown in FIG. 3 is mounted.
【図５】図５は、本発明方法により製造したセグメント
チップの他の態様の斜視図、平面図及び断面図である。FIG. 5 is a perspective view, a plan view, and a cross-sectional view of another embodiment of the segment chip manufactured by the method of the present invention.
【図６】図６は、本発明方法により製造したセグメント
チップの他の態様の斜視図、平面図及び側面図である。FIG. 6 is a perspective view, a plan view, and a side view of another embodiment of the segment chip manufactured by the method of the present invention.
【図７】図７は、本発明方法により製造したセグメント
チップの他の態様の斜視図、平面図及び断面図である。FIG. 7 is a perspective view, a plan view, and a sectional view of another embodiment of the segment chip manufactured by the method of the present invention.
【図８】図８は、本発明方法により製造したセグメント
チップの他の態様の斜視図、平面図及び断面図である。FIG. 8 is a perspective view, a plan view, and a cross-sectional view of another embodiment of the segment chip manufactured by the method of the present invention.
【図９】図９は、本発明方法により製造したセグメント
チップの他の態様の斜視図、平面図及び断面図である。FIG. 9 is a perspective view, a plan view, and a cross-sectional view of another embodiment of the segment chip manufactured by the method of the present invention.
１ 円柱状の型 ２ キャビティ ３ 柱状の成形品 ４ 下パンチ ５ 超砥粒と結合材の混合粉末 ６ ならし型 ７ 上パンチ ８ 超砥粒焼結体 ９ 柱状の空間 １０ セグメントチップ DESCRIPTION OF SYMBOLS 1 Cylindrical mold 2 Cavity 3 Columnar molded product 4 Lower punch 5 Mixed powder of superabrasives and a binder 6 Leveling mold 7 Upper punch 8 Superabrasive sintered body 9 Columnar space 10 Segment chip
Claims (5)
形するセグメントチップの製造方法において、焼結型に
充填した超砥粒と結合材の混合粉末の中央部に水溶性物
質からなる柱状の成形品を埋め込み、超砥粒と結合材の
混合粉末を焼結したのち、水溶性物質を水により溶解し
除去することを特徴とする、チップの中央部に柱状の空
間を有する切断砥石のセグメントチップの製造方法。In a method of manufacturing a segment chip for forming a mixed powder of superabrasive grains and a binder by sintering, a center portion of the mixed powder of the superabrasive grains and a binder filled in a sintering mold is formed from a water-soluble substance. Cutting with a columnar space in the center of the chip, characterized by embedding a columnar molded product, sintering a mixed powder of superabrasives and a binder, and then dissolving and removing a water-soluble substance with water. A method for manufacturing a segment tip of a whetstone.
る請求項１記載のセグメントチップの製造方法。2. The method according to claim 1, wherein the water-soluble substance has a melting point of 700 ° C. or higher.
シウム、塩化ナトリウム、塩化マグネシウム及びヨウ化
カリウムよりなる群から選ばれたものである請求項２記
載のセグメントチップの製造方法。3. The method according to claim 2, wherein the water-soluble powder is selected from the group consisting of sodium sulfate, calcium chloride, sodium chloride, magnesium chloride and potassium iodide.
形状が菱形の四角柱であり、菱形の対角線の１本が切断
時のチップの進行方向と平行で、対角線の他の１本が切
断時のチップの進行方向と直角であり、かつ進行方向と
平行な対角線が、進行方向と直角な対角線より長い請求
項１記載のセグメントチップの製造方法。4. A pillar-shaped space at the center of the chip is a quadrangular prism having a diamond-shaped opening, and one of the diagonal lines of the diamond is parallel to the direction of movement of the chip at the time of cutting, and the other one of the diagonal lines. 2. The method for manufacturing a segment chip according to claim 1, wherein the book is perpendicular to the advancing direction of the chip at the time of cutting, and a diagonal parallel to the advancing direction is longer than a diagonal perpendicular to the advancing direction.
形状がトラック形の柱状であり、トラック形の重心を通
りトラックの周上の２点を結ぶ最長の線分が切断時のチ
ップの進行方向と平行であり、トラック形の重心を通り
トラックの周上の２点を結ぶ最短の線分が切断時のチッ
プの進行方向と直角である請求項１記載のセグメントチ
ップの製造方法。5. A column-shaped space at the center of the chip has a track-shaped column having an opening, and a longest line segment passing through the center of gravity of the track and connecting two points on the periphery of the track is used for cutting. 2. The method for manufacturing a segment chip according to claim 1, wherein the shortest line segment which is parallel to the chip traveling direction and passes through the track-shaped center of gravity and connects two points on the periphery of the track is perpendicular to the chip traveling direction at the time of cutting. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15585897A JP3817023B2 (en) | 1997-05-29 | 1997-05-29 | Segment chip manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15585897A JP3817023B2 (en) | 1997-05-29 | 1997-05-29 | Segment chip manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10329034A true JPH10329034A (en) | 1998-12-15 |
| JP3817023B2 JP3817023B2 (en) | 2006-08-30 |
Family
ID=15615050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15585897A Expired - Lifetime JP3817023B2 (en) | 1997-05-29 | 1997-05-29 | Segment chip manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3817023B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7021307B1 (en) | 2004-11-17 | 2006-04-04 | Noritake Co., Limited | Rotary cutting saw |
| CN111515872A (en) * | 2020-04-10 | 2020-08-11 | 广东大市智能装备有限公司 | Powder metallurgy integrated forming method for hollow diamond |
-
1997
- 1997-05-29 JP JP15585897A patent/JP3817023B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7021307B1 (en) | 2004-11-17 | 2006-04-04 | Noritake Co., Limited | Rotary cutting saw |
| CN111515872A (en) * | 2020-04-10 | 2020-08-11 | 广东大市智能装备有限公司 | Powder metallurgy integrated forming method for hollow diamond |
| CN111515872B (en) * | 2020-04-10 | 2022-01-11 | 广东大市智能装备有限公司 | Powder metallurgy integrated forming method for hollow diamond |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3817023B2 (en) | 2006-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6159286A (en) | Process for controlling diamond nucleation during diamond synthesis | |
| US6286498B1 (en) | Metal bond diamond tools that contain uniform or patterned distribution of diamond grits and method of manufacture thereof | |
| US2811960A (en) | Abrasive cutting body | |
| US9463552B2 (en) | Superbrasvie tools containing uniformly leveled superabrasive particles and associated methods | |
| US3918217A (en) | Abrading device with protrusions on metal bonded abrasive grits | |
| US7124753B2 (en) | Brazed diamond tools and methods for making the same | |
| US8104464B2 (en) | Brazed diamond tools and methods for making the same | |
| US9868100B2 (en) | Brazed diamond tools and methods for making the same | |
| US9409280B2 (en) | Brazed diamond tools and methods for making the same | |
| JP3431646B2 (en) | Diamond pellets and saw blade segments made therefrom | |
| US4805586A (en) | Dressing tool for grinding wheels | |
| US9221154B2 (en) | Diamond tools and methods for making the same | |
| JPH05208312A (en) | Duplex coating diamond particle pellet and saw blade segment manufactured by using it | |
| US3596649A (en) | Abrasive tool and process of manufacture | |
| US9199357B2 (en) | Brazed diamond tools and methods for making the same | |
| HUT76497A (en) | Abrasive tool | |
| US9238207B2 (en) | Brazed diamond tools and methods for making the same | |
| JP2002524287A (en) | Diamond blade with rim-type cutting tip for use in grinding or cutting equipment | |
| JP2002530212A (en) | Method for producing sintered articles and products produced thereby | |
| JPH03161278A (en) | diamond saw blade | |
| WO2002066217A1 (en) | Machining tips and cutting wheel, grinding wheel and drilling wheel therewith | |
| JP3817023B2 (en) | Segment chip manufacturing method | |
| JP2002504027A (en) | End mill manufacturing method | |
| JP2001038630A (en) | Superfine abrasive grain tool, and its manufacture | |
| JP3097356B2 (en) | Manufacturing method of drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040408 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20050815 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050825 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20051017 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20060601 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20060609 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120616 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150616 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150616 Year of fee payment: 9 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: R3D02 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |