JPH0335067B2 - - Google Patents
Info
- Publication number
- JPH0335067B2 JPH0335067B2 JP62145132A JP14513287A JPH0335067B2 JP H0335067 B2 JPH0335067 B2 JP H0335067B2 JP 62145132 A JP62145132 A JP 62145132A JP 14513287 A JP14513287 A JP 14513287A JP H0335067 B2 JPH0335067 B2 JP H0335067B2
- Authority
- JP
- Japan
- Prior art keywords
- dresser
- grinding wheel
- dressing
- grindstone
- grinding
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 claims description 4
- 229910003460 diamond Inorganic materials 0.000 description 29
- 239000010432 diamond Substances 0.000 description 29
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、研削砥石（以下単に砥石という）の
ドレツシング方法および装置に係る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dressing method and apparatus for a grinding wheel (hereinafter simply referred to as a grindstone).
ドレツサは、たとえば材質が単石ダイヤモンド
のように硬度が高いものであつても、砥石のドレ
ツシング量に比例して摩耗する。第４図は単石ダ
イヤモンドの摩耗状態を示すもので、Ａは砥石の
回転方向、Ｂはドレツシング送り方向の形状を示
すものである。同図において、ａはドレツシング
前、ｂはドレツシング量が15cm3、同じくｃは39
cm3、ｄは73cm3、ｅは96cm3、ｆは120cm3の場合のダ
イヤモンド粒の先端形状を示している。このよう
に、ダイヤモンド粒が摩耗して、その先端の形状
が変ると、ドレツシングされた砥石の作業面の性
状が変り、研削特性が変化するため、研削仕上面
に研削焼け等が発生し易くなる。
Even if the dresser is made of a highly hard material such as a single diamond, the dresser wears out in proportion to the amount of dressing of the grindstone. FIG. 4 shows the state of wear of a single diamond, where A shows the shape in the rotating direction of the grindstone and B shows the shape in the dressing feeding direction. In the same figure, a is before dressing, b is a dressing amount of 15 cm 3 , and c is 39 cm 3
cm 3 , d is 73 cm 3 , e is 96 cm 3 , f is 120 cm 3 The shape of the tip of the diamond grain is shown. In this way, when the diamond grains wear out and the shape of the tip changes, the properties of the working surface of the dressing wheel change, and the grinding characteristics change, making it easier for grinding burns to occur on the finished surface. .
このような、ドレツサの摩耗の影響を軽減する
方法として、第５図に示すようなドレツシング方
法が提案されている。同図において、１は砥石。
２は砥石１の回転方向に対し所定の角度傾斜した
ドレツサホルダ。３はドレツサで、シヤンク４の
一端にダイヤモンド粒５が固定されている。６は
ドレツサホルダ２にドレツサ３を固定する止めね
じである。また、第６図はダイヤモンド粒５の先
端部を示すものである。 As a method of reducing the influence of wear on the dresser, a dressing method as shown in FIG. 5 has been proposed. In the figure, 1 is a whetstone.
Reference numeral 2 denotes a dresser holder that is inclined at a predetermined angle with respect to the rotating direction of the grindstone 1. 3 is a dresser, and a diamond grain 5 is fixed to one end of a shank 4. 6 is a set screw for fixing the dresser 3 to the dresser holder 2. Further, FIG. 6 shows the tip of the diamond grain 5. As shown in FIG.
ドレツサ３の砥石１に対向する向きを一定にし
たままドレツシングすると、ダイヤモンド粒５は
第６図において２点鎖線で示すｇ，ｈのように
徐々に摩耗する。つまり、ダイヤモンド粒５と砥
石１との当接部は徐々に拡大する。そこで、研削
状態をみて、砥石１のドレツシング状態を判断
し、ダイヤモンド粒５の摩耗が大きくなつたと推
定されると、研削作業を中断して止めねじ６を緩
め、ドレツサ３を回して、ダイヤモンド粒５の砥
石１との当接部を変え、止めねじ６を締めたの
ち、砥石１のドレツシングを行なつていた。 When dressing is performed while keeping the direction of the dresser 3 facing the grindstone 1 constant, the diamond grains 5 gradually wear out as indicated by the two-dot chain lines g and h in FIG. In other words, the contact area between the diamond grains 5 and the grindstone 1 gradually expands. Therefore, by looking at the grinding condition and determining the dressing condition of the grinding wheel 1, if it is estimated that the wear of the diamond grains 5 has become large, the grinding operation is interrupted, the setscrew 6 is loosened, the dresser 3 is turned, and the diamond grains are After changing the contact portion of the grindstone 5 with the grindstone 1 and tightening the setscrew 6, the grindstone 1 was dressed.
このため、作業性が悪いだけでなく、砥石１の
作業面の性状が安定せず、研削特性が不安定にな
るなどの問題点がある。
For this reason, there are problems such as not only poor workability but also unstable properties of the working surface of the grindstone 1 and unstable grinding characteristics.
本発明の目的は、上記の問題点に鑑み、作業性
を向上させ、かつ安定した研削特性が得られるよ
うにした砥石のドレツシング装置を提供するにあ
る。 SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a grindstone dressing device that improves workability and provides stable grinding characteristics.
上記目的を達成するための本発明の手段を実施
例に対応する第１図に基づいて説明する。同図に
おいて、１は砥石、７はドレツサ。８は一端にド
レツサ７を保持すると共に、他端はカツプリング
９を介してモータ１０に接続するドレツサホル
ダ。１１はドレツサホルダ８を所定の角度で回転
自在に保持するドレツサボデイ。１２は軸受であ
る。
Means of the present invention for achieving the above object will be explained based on FIG. 1 corresponding to an embodiment. In the figure, 1 is a grindstone and 7 is a dresser. A dresser holder 8 holds the dresser 7 at one end and is connected to the motor 10 via a coupling ring 9 at the other end. 11 is a dresser body that rotatably holds the dresser holder 8 at a predetermined angle. 12 is a bearing.
ドレツシング作業をする場合、砥石１の研削作
業面を切込み量に相当する距離だけ下げ、砥石１
およびモータ１０によりドレツサ７に固定されて
いるダイヤモンド粒５を回転させながら砥石１の
幅方向（第１図における紙面に垂直な方向）に相
対的に移動させる。
When performing dressing work, lower the grinding surface of grinding wheel 1 by a distance corresponding to the depth of cut, and
The diamond grains 5 fixed to the dresser 7 are rotated by the motor 10 and relatively moved in the width direction of the grindstone 1 (direction perpendicular to the plane of the paper in FIG. 1).
ドレツシング作業の間ダイヤモンド粒５は回転
しているから、全周で砥石１に当接し、一部だけ
を当接させる場合に比べて当接部の摩耗の進行割
合が小さい。従つて、ドレツシング条件がほぼ同
一となり、砥石１の作業面の性状が均一となつ
て、安定した研削特性を得ることができる。 Since the diamond grains 5 are rotating during the dressing operation, the entire circumference of the diamond grains 5 is in contact with the grinding wheel 1, and the rate of wear at the contact portion is smaller than when the diamond grains 5 are in contact with the grindstone 1 only partially. Therefore, the dressing conditions are almost the same, the properties of the working surface of the grindstone 1 are uniform, and stable grinding characteristics can be obtained.
以下、本発明の一実施例を示す第１図ないし第
３図に基づいて説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
１は砥石、７はドレツサで、一端にダイヤモン
ド粒５が固定されている。８は一端にドレツサ７
と嵌合する穴１３を持つドレツサホルダ。９はモ
ータ１０の回転をドレツサホルダ８に伝えるカツ
プリング。１１はドレツサホルダ８を砥石１の回
転方向に対し所定の角度傾斜させ、軸受１２によ
り回転自在に保持するドレツサボデイ。１４は研
削盤本体のテーブルである。以下、動作について
説明する。 1 is a grindstone, 7 is a dresser, and diamond grains 5 are fixed to one end. 8 is a dresser 7 at one end
A dresser holder having a hole 13 that fits with the dresser holder. 9 is a coupling that transmits the rotation of the motor 10 to the dresser holder 8; Reference numeral 11 denotes a dresser body in which the dresser holder 8 is tilted at a predetermined angle with respect to the rotating direction of the grindstone 1 and is rotatably held by a bearing 12. 14 is a table of the main body of the grinding machine. The operation will be explained below.
ドレツシング前に、砥石１を回転させると共に
モータ１０を回転させ、ドレツサ７すなわちダイ
ヤモンド粒５を回転させる。次に、図示しない主
軸に載置された砥石１の研削作業面を切込み量に
相当する距離だけ下げる。引続きテーブル１４を
砥石１の幅方向に移動させて、砥石１の研削作業
面をドレツシングする。 Before dressing, the grindstone 1 is rotated and the motor 10 is rotated to rotate the dresser 7, that is, the diamond grains 5. Next, the grinding surface of the grindstone 1 placed on a main shaft (not shown) is lowered by a distance corresponding to the depth of cut. Subsequently, the table 14 is moved in the width direction of the grindstone 1 to dress the grinding surface of the grindstone 1.
ここで、ドレツシングにおけるダイヤモンド粒
５の摩耗形状は以下のようになる。たとえば、第
２図に示すように、ドレツシング前のダイヤモン
ド粒５が外径ｄの円柱で、軸心がドレツサ７の軸
心Ａ−Ａと一致し、先端が頂角2θの円錐であると
する。この場合、ドレツシングによりダイヤモン
ド粒５も摩耗するが、前記したようにダイヤモン
ド粒５は回転しているから、砥石１との当接部１
５の母線BCは常に一定となる。なお、Ｏ−Ｏは
砥石１の軸心である。 Here, the wear shape of the diamond grains 5 during dressing is as follows. For example, as shown in FIG. 2, suppose that the diamond grain 5 before dressing is a cylinder with an outer diameter d, whose axis coincides with the axis A-A of the dresser 7, and whose tip is a cone with an apex angle of 2θ. . In this case, the diamond grains 5 are also worn due to dressing, but since the diamond grains 5 are rotating as described above, the contact portion 1 with the grinding wheel 1
The bus line BC of 5 is always constant. Note that O-O is the axis of the grindstone 1.
また、ダイヤモンド粒５を成形しない場合につ
いて以下に述べる。素材としてのダイヤモンド粒
５は第３図に示すように凹凸を持ち、一様な断面
ではない。そこで、ダイヤモンド粒５の概略中心
軸をドレツサ７の中心軸に合わせて固定し、砥石
１と軸心Ａ−Ａとを角度θで交差させてドレツシ
ングすると、たとえば同図において２点鎖線で示
す形状となる。すなわち、当接部１５の母線DE
と母線DFとは長さが異なる。 Further, a case in which the diamond grains 5 are not molded will be described below. As shown in FIG. 3, the diamond grains 5 as a raw material have unevenness and do not have a uniform cross section. Therefore, by fixing the approximate center axis of the diamond grain 5 to match the center axis of the dresser 7 and dressing the grindstone 1 and the axis A-A at an angle θ, for example, the shape shown by the two-dot chain line in the figure is formed. becomes. In other words, the bus line DE of the contact portion 15
and the bus line DF have different lengths.
ところで、前記したようにドレツシング量に比
例してダイヤモンド粒５は摩耗するから、摩耗に
より当接部１５はＡ−Ａ方向に移動する。しかし
ながら、ダイヤモンド粒５は回転しているから、
同一のドレツシング量に対する当接部１５のＡ−
Ａ方向への移動速度は、従来のようにダイヤモン
ド粒５を固定し一部だけを当接させる場合にくら
べ、極めて小さい。つまり、当接部１５における
母線の長さは任意の断面においては一様ではない
が、１回転あたりで考えると摩耗による当接部１
５の変化の割合は極めて小さい。 By the way, as described above, since the diamond grains 5 are worn out in proportion to the amount of dressing, the abutment portion 15 moves in the direction AA due to the wear. However, since the diamond grain 5 is rotating,
A- of the contact portion 15 for the same dressing amount
The speed of movement in the A direction is extremely small compared to the conventional case where the diamond grains 5 are fixed and only a portion of them abut. In other words, although the length of the generatrix in the contact part 15 is not uniform in any cross section, when considered per rotation, the length of the generatrix in the contact part 15 is due to wear.
The rate of change in 5 is extremely small.
なお、前記実施例においては、ダイヤモンド粒
５が１個の場合について説明したが、ドレツサ７
に複数のダイヤモンド粒５を固定してもよいし、
ダイヤモンド粒５の代りに他の砥粒を用いてもよ
いことは言うまでもない。さらに、たとえばモー
タを回転角制御して、ドレツシング前にドレツサ
７を一定角度だけ回すようにしておき、ドレツシ
ング中はドレツサ７を回さないようにしてもよ
い。 In the above embodiment, the case where the number of diamond grains 5 is one was explained, but the dresser 7
A plurality of diamond grains 5 may be fixed to the
It goes without saying that other abrasive grains may be used in place of the diamond grains 5. Further, for example, the rotation angle of the motor may be controlled so that the dresser 7 is rotated by a certain angle before dressing, but the dresser 7 may not be rotated during dressing.
以上詳述したように、本発明によれば、同一の
ドレツシング量に対してドレツサ７の砥石１との
当接部１５の変化量が小さい。従つて、砥石１の
作業面の性状が安定し、研削特性が安定するとい
う効果がある。
As detailed above, according to the present invention, the amount of change in the contact portion 15 of the dresser 7 with the grindstone 1 is small for the same amount of dressing. Therefore, there is an effect that the properties of the working surface of the grindstone 1 are stabilized and the grinding characteristics are stabilized.
第１図は本発明の実施例を示す正面断面、第２
図ないし第３図は実施例を説明するための説明
図、第４図ないし第６図は従来例の説明図であ
る。
１…研削砥石、２，８…ドレツサホルダ、３，
７…ドレツサ、１０…モータ、１１…ドレツサボ
デイ、Ａ−Ａ…ドレツサ７の軸心、Ｏ−Ｏ…研削
砥石１の軸心。
Figure 1 is a front cross section showing an embodiment of the present invention;
3 through 3 are explanatory diagrams for explaining the embodiment, and FIGS. 4 through 6 are explanatory diagrams of a conventional example. 1... Grinding wheel, 2, 8... Dresser holder, 3,
7... Dresser, 10... Motor, 11... Dresser body, A-A... Axis center of dresser 7, O-O... Axis center of grinding wheel 1.
Claims (1)
て所定の角度傾斜して配置されたドレツサとを研
削砥石の幅方向に相対的に移動させてドレツシン
グを行なう研削砥石のドレツシング方法におい
て、ドレツシング中にドレツサを回転させ、回転
するドレツサにより研削砥石をドレツシングする
ことを特徴とする研削砥石のドレツシング方法。 ２ ドレツサと研削砥石とを研削砥石の幅方向に
相対的に移動させてドレツシングを行なう研削砥
石のドレツシング装置において、ドレツサと、ド
レツサを研削砥石の研削作業面に所定の角度傾斜
させ、回転自在に支持するドレツサボデイと、ド
レツサを回転駆動する手段とから成り、ドレツシ
ング中にドレツサを回転させ、回転するドレツサ
により研削砥石をドレツシングするように構成し
たことを特徴とする研削砥石のドレツシング装
置。[Scope of Claims] 1. A grinding wheel that performs dressing by relatively moving the grinding wheel and a dresser whose rotating shaft is arranged at a predetermined angle with respect to the rotating shaft of the grinding wheel in the width direction of the grinding wheel. A dressing method for a grinding wheel, characterized in that a dresser is rotated during dressing, and the grinding wheel is dressed by the rotating dresser. 2. In a grinding wheel dressing device that performs dressing by relatively moving the dresser and the grinding wheel in the width direction of the grinding wheel, the dresser and the dresser are tilted at a predetermined angle to the grinding work surface of the grinding wheel so as to be rotatable. A dressing device for a grinding wheel, comprising a dresser body for supporting the dresser and a means for rotationally driving the dresser, the dresser being rotated during dressing, and the grinding wheel being dressed by the rotating dresser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14513287A JPS63312064A (en) | 1987-06-12 | 1987-06-12 | Method and device for dressing of grinding wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14513287A JPS63312064A (en) | 1987-06-12 | 1987-06-12 | Method and device for dressing of grinding wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63312064A JPS63312064A (en) | 1988-12-20 |
| JPH0335067B2 true JPH0335067B2 (en) | 1991-05-24 |
Family
ID=15378147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14513287A Granted JPS63312064A (en) | 1987-06-12 | 1987-06-12 | Method and device for dressing of grinding wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63312064A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200482158Y1 (en) * | 2016-03-18 | 2016-12-22 | 이병순 | Continuously variable work center height control device of centerless grinding machine |
| KR101688911B1 (en) * | 2016-05-03 | 2017-01-02 | 이병순 | Centerless grinding machine comprising a dressing function |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4122559Y1 (en) * | 1964-04-20 | 1966-11-10 |
-
1987
- 1987-06-12 JP JP14513287A patent/JPS63312064A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4122559Y1 (en) * | 1964-04-20 | 1966-11-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63312064A (en) | 1988-12-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |