JPH05285834A - Truing tool for super grinding grain grinding wheel - Google Patents

Truing tool for super grinding grain grinding wheel

Info

Publication number
JPH05285834A
JPH05285834A JP9066892A JP9066892A JPH05285834A JP H05285834 A JPH05285834 A JP H05285834A JP 9066892 A JP9066892 A JP 9066892A JP 9066892 A JP9066892 A JP 9066892A JP H05285834 A JPH05285834 A JP H05285834A
Authority
JP
Japan
Prior art keywords
grinding
cbn
grinding wheel
truing tool
grains
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.)
Pending
Application number
JP9066892A
Other languages
Japanese (ja)
Inventor
Nobuo Yasunaga
暢男 安永
Kozo Abe
耕三 阿部
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP9066892A priority Critical patent/JPH05285834A/en
Publication of JPH05285834A publication Critical patent/JPH05285834A/en
Pending legal-status Critical Current

Links

Landscapes

  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

PURPOSE:To perform truing of a diamond and CBN grinding wheel in a short time with high precision by using CBN grinding grains for grinding grain, in a truing tool for a super grinding grain grinding wheel. CONSTITUTION:A super grinding grain grinding wheel to which swing of a grinding wheel working surface occurs and in which a defective shape is formed owing to use is finished in a given shape by a truing tool 1. In the truing tool, CBN(cubic crystal boron nitride) grinding grains 5 are used in the grinding grain thereof and bonded by means of a bonding agent 6 to form a grinding grain layer 4, which is fixed to a base metal 2. This constitution causes finely crushing and wearing of diamond or the CBN grinding grains unevenly protruded from the grinding working surface of the grinding wheel or removes protruding bond material to shape the shape of the grinding working surface. Since the CBN grinding grains are more rigid than GC grinding grains and WA grinding grains, the diamond or CBN grinding wheel can be shaped in a short time with high precision.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、ダイヤモンドまたは
CBN(立方晶窒化ホウ素)など超砥粒を用いた研削ホ
イール用ツルーイング工具に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a truing tool for a grinding wheel using a super abrasive grain such as diamond or CBN (cubic boron nitride).

【0002】[0002]

【従来の技術】研削ホイール作用面の振れや形状不良を
生じた研削ホイールは、ツルーイングにより所定の形状
に仕上げる。ツルーイングは、ツルーイング工具により
砥粒を微細に破砕し、あるいは磨耗させて研削ホイール
作用面の形状を整える。従来、ツルーイング工具の材料
として硬質砥粒を焼結した多孔質材料が用いられてい
る。硬質砥粒として、たとえば、GC砥粒やWA砥粒が
用いられており、砥粒を固める結合剤としてビトリファ
イドボンドが多用されている。
2. Description of the Related Art A grinding wheel having a runout on the working surface of the grinding wheel or a defective shape is finished into a predetermined shape by truing. In the truing, abrasive grains are finely crushed or abraded by a truing tool to adjust the shape of the grinding wheel working surface. Conventionally, a porous material obtained by sintering hard abrasive grains has been used as a material for a truing tool. As hard abrasive grains, for example, GC abrasive grains and WA abrasive grains are used, and vitrified bond is often used as a binder for hardening the abrasive grains.

【0003】[0003]

【発明が解決しようとする課題】超硬合金、セラミック
ス、半導体などの難削材の研削に、ダイヤモンドまたは
CBN研削ホイールが用いられている。研削ホイール
は、ホイール本体(台金)の周面または端面に、ダイヤ
モンド砥粒またはCBN砥粒からなる砥粒層が形成され
ている。
A diamond or CBN grinding wheel is used for grinding difficult-to-cut materials such as cemented carbide, ceramics and semiconductors. In the grinding wheel, an abrasive grain layer made of diamond abrasive grains or CBN abrasive grains is formed on the peripheral surface or the end surface of the wheel body (base metal).

【0004】上記GC砥粒やWA砥粒などの硬さは、ダ
イヤモンド砥粒の1/3程度以下である。ちなみに、ダ
イヤモンド砥粒のビッカース硬さは9000〜1000
0であるのに対し、GC砥粒のビッカース硬さは約30
00である。したがって、従来のツルーイング工具によ
りダイヤモンドまたはCBN研削ホイールをツルーイン
グすると、ツルーイング工具の方が研削ホイールよりも
多く削られていた。このために、ツルーイング作業に多
くの時間を要し、またツルーイング精度も低かった。た
とえば、ツルーイングが不十分で、研削作用面にダイヤ
モンド砥粒が局部的に突出すると、その砥粒で削られた
部分は溝となり、研削面に縞模様が生じる。
The hardness of the above-mentioned GC abrasive grains and WA abrasive grains is about 1/3 or less of that of diamond abrasive grains. By the way, the Vickers hardness of diamond abrasive grains is 9000-1000.
While it is 0, the Vickers hardness of GC abrasive grains is about 30.
00. Therefore, when truing a diamond or CBN grinding wheel with a conventional truing tool, the truing tool was ground more than the grinding wheel. For this reason, it took a lot of time for the truing work, and the truing accuracy was low. For example, when the truing is insufficient and the diamond abrasive grains locally project on the grinding action surface, the portion scraped by the abrasive grains becomes a groove, and a striped pattern is formed on the grinding surface.

【0005】この発明は、短時間かつ高精度でツルーイ
ングを行うことができる研削ホイール用ツルーイング工
具を提供しようとするものである。
The present invention is intended to provide a truing tool for a grinding wheel which can perform truing in a short time and with high accuracy.

【0006】[0006]

【課題を解決するための手段】この発明の超砥粒研削ホ
イール用ツルーイング工具は、砥粒がCBN砥粒からな
っている。
In the truing tool for superabrasive grinding wheels of the present invention, the abrasive grains are CBN abrasive grains.

【0007】CBN砥粒の平均粒径は、ツルーイングし
ようとする研削ホイールに使用されている砥粒径の1/
5〜5程度が適当である。また、結合剤としてビトリフ
ァイド、レジノイドあるいはメタル結合剤が用いられ
る。CBN砥粒の容積比は10〜70%程度が適当であ
る。ツルーイング工具はスティック形、ローラー形、カ
ップ形などいずれの形状であってもよい。ツルーイング
工具の結合剤の種類は、研削ホイールの結合剤の種類に
応じて決められる。なお、CBN砥粒のビッカース硬さ
は約6000である。
The average grain size of the CBN abrasive grains is 1 / the grain size used in the grinding wheel to be trued.
About 5 to 5 is suitable. Further, vitrified, resinoid or metal binder is used as the binder. The volume ratio of the CBN abrasive grains is appropriately about 10 to 70%. The truing tool may have any shape such as a stick shape, a roller shape and a cup shape. The type of binder in the truing tool depends on the type of binder in the grinding wheel. The VBN hardness of the CBN abrasive grains is about 6000.

【0008】なお、図1は、CBN砥粒を結合剤により
固めて作った、カップ状のツルーイング工具の一部を模
式的に示している。
[0008] FIG. 1 schematically shows a part of a cup-shaped truing tool made by cementing CBN abrasive grains with a binder.

【0009】[0009]

【作用】ツルーイング工具のCBN砥粒は、研削ホイー
ルの研削作用面から不均一に突出したダイヤモンドまた
はCBN砥粒を微細に破砕、磨耗し、また突出したボン
ド材を除去して研削作用面の形状を整える。CBN砥粒
はGC砥粒やWA砥粒よりも硬い(ビッカース硬さ約6
000)ので、ダイヤモンドまたはCBN研削ホイール
を短時間で精度よく整形する。
The function of the CBN abrasive grains of the truing tool is that the diamond or CBN abrasive grains that are unevenly projected from the grinding action surface of the grinding wheel are finely crushed and worn, and the protruding bonding material is removed to form the shape of the grinding action surface. Arrange. CBN abrasive grains are harder than GC and WA abrasive grains (Vickers hardness of about 6
000), the diamond or CBN grinding wheel is shaped accurately in a short time.

【0010】[0010]

【実施例】図1は、カップ状ツルーイング工具の一部を
模式的に拡大して示している。ツルーイング工具1は、
鋼製の台金2にCBN砥粒5をビトリファイド結合剤6
で固めて、ツルーイング砥粒層4を形成している。図に
おいて、符号7は気孔である。この気孔はレジノイドあ
るいはメタル結合剤のようなボンドマトリックスタイプ
の場合は原則として存在しない。CBN砥粒5の平均粒
径は70μmであり、容積比は30%であった。ダイヤ
モンド砥粒をメタルボンドにより固めたカップ状研削ホ
イールを、上記カップ状ツルーイング工具によりツルー
イングした。また、比較用に上記と同じ条件の研削ホイ
ールをGC砥粒のツルーイング工具でツルーイングし
た。GC砥粒の平均粒径は70μmであり、容積比は5
0%であった。まず、ツルーイング時間はCBN砥粒の
ツルーイング工具によりツルーイングした場合、GC砥
粒のツルーイング工具の場合の1/3の時間であった。
さらに、CBN砥粒のツルーイング工具によりツルーイ
ングした場合、研削ホイールの振れは1μm以下となっ
たが、GC砥粒のツルーイング工具の場合、3μmであ
った。
DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic enlarged view showing a part of a cup-shaped truing tool. The truing tool 1 is
Steel base metal 2 with CBN abrasive grains 5 and vitrified bond 6
And the truing abrasive grain layer 4 is formed. In the figure, reference numeral 7 is a pore. In principle, these pores do not exist in the case of bond matrix type such as resinoid or metal binder. The CBN abrasive grains 5 had an average grain size of 70 μm and a volume ratio of 30%. A cup-shaped grinding wheel obtained by solidifying diamond abrasive grains with a metal bond was trued by the cup-shaped truing tool. For comparison, a grinding wheel under the same conditions as above was trued with a truing tool of GC abrasive grains. The average grain size of the GC abrasive grains is 70 μm, and the volume ratio is 5
It was 0%. First, the truing time was one-third of the time of truing with a truing tool for CBN abrasive grains as compared with a truing tool for GC abrasive grains.
Further, when truing was performed with a CBN abrasive grain truing tool, the run-out of the grinding wheel was 1 μm or less, whereas it was 3 μm with the GC abrasive grain truing tool.

【0011】[0011]

【発明の効果】この発明のツルーイング工具では、砥粒
が硬いCBN砥粒であるので、ダイヤモンドまたはCB
N研削ホイールを短時間かつ高精度でツルーイングを行
うことができる。
According to the truing tool of the present invention, since the abrasive grains are hard CBN abrasive grains, diamond or CB is used.
N grinding wheel can be trued in a short time and with high accuracy.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明のツルーイング工具を模式的に示す拡
大断面図である。
FIG. 1 is an enlarged sectional view schematically showing a truing tool of the present invention.

【符号の説明】[Explanation of symbols]

1 ツルーイング工具 2 台金 4 ツルーイング砥粒層 5 砥粒 6 結合剤 7 気孔 1 Truing Tool 2 Base Metal 4 Truing Abrasive Grain Layer 5 Abrasive Grain 6 Binder 7 Pore

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 砥粒がCBN砥粒であることを特徴とす
る超砥粒研削ホイール用ツルーイング工具。
1. A truing tool for a superabrasive grinding wheel, wherein the abrasive grains are CBN abrasive grains.
JP9066892A 1992-04-10 1992-04-10 Truing tool for super grinding grain grinding wheel Pending JPH05285834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9066892A JPH05285834A (en) 1992-04-10 1992-04-10 Truing tool for super grinding grain grinding wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9066892A JPH05285834A (en) 1992-04-10 1992-04-10 Truing tool for super grinding grain grinding wheel

Publications (1)

Publication Number Publication Date
JPH05285834A true JPH05285834A (en) 1993-11-02

Family

ID=14004921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9066892A Pending JPH05285834A (en) 1992-04-10 1992-04-10 Truing tool for super grinding grain grinding wheel

Country Status (1)

Country Link
JP (1) JPH05285834A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009018396A (en) * 2007-07-13 2009-01-29 Nitolex Honsha:Kk Correction grinding wheel for super-abrasive grinding wheel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009018396A (en) * 2007-07-13 2009-01-29 Nitolex Honsha:Kk Correction grinding wheel for super-abrasive grinding wheel

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Effective date: 20001212