JPH0716883B2 - Grinding wheel - Google Patents
Grinding wheelInfo
- Publication number
- JPH0716883B2 JPH0716883B2 JP61297060A JP29706086A JPH0716883B2 JP H0716883 B2 JPH0716883 B2 JP H0716883B2 JP 61297060 A JP61297060 A JP 61297060A JP 29706086 A JP29706086 A JP 29706086A JP H0716883 B2 JPH0716883 B2 JP H0716883B2
- Authority
- JP
- Japan
- Prior art keywords
- grinding
- grindstone
- ground
- grinding wheel
- wheel
- 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
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- Polishing Bodies And Polishing Tools (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、研削砥石と被研削物との圧接における研削
点が常に砥石回転軸方向に沿つて横移動するようにした
研削砥石に関するものである。Description: TECHNICAL FIELD The present invention relates to a grinding wheel in which a grinding point in pressure contact between a grinding wheel and an object to be ground is always laterally moved along a wheel rotation axis direction. is there.
回転自在に支持された砥石の外周面を用いて行われる精
密平面研削加工の方法として、クリープフイード研削が
ある。このクリープフイード研削は、砥石の切込量を研
削取りしろとほぼ同程度になるように設定し、砥石を回
転させながら被研削物に圧接させ、その状態で、被研削
物に対して砥石を相対的に一回だけ送つて研削仕上げを
完了するという方法である。そして、被研削物に凹部等
を研削形成する場合、例えば第６図に示すように、被研
削物１に溝２を研削加工する場合には、円柱形台金３の
外周面に、円周に沿う研削面4aが上記溝２に対応する形
状に形成された研削部４を設け、これを中心軸５を中心
に回転させながらその研削面4aを被研削物１に圧接して
研削加工することが行われる。Creep feed grinding is known as a method of precision surface grinding performed by using the outer peripheral surface of a grindstone rotatably supported. In this creep feed grinding, the cutting amount of the grindstone is set to be approximately the same as the grinding allowance, the grindstone is pressed against the workpiece while rotating, and in that state, the grindstone is applied to the grindstone. Is relatively sent only once to complete the grinding finish. When a recess or the like is formed on the object to be ground by grinding, for example, as shown in FIG. 6, when the groove 2 is ground on the object to be ground 1, the outer circumference of the cylindrical base metal 3 is surrounded by a circle. A grinding portion 4 having a grinding surface 4a along the groove 2 is provided in a shape corresponding to the groove 2, and the grinding surface 4a is pressed against the object 1 to be ground while rotating the grinding portion 4 about a central axis 5. Is done.
ところで、上記のような研削加工では、研削砥石を高速
回転させながら被研削物表面に圧接させるため、被研削
物2aは極めて高温に曝され、被研削面2aの表層において
は、研削焼けや研削割れ等が発生しやすい。このため、
研削砥石と被研削物１の被研削面2aとの間にクーラント
液を注ぎながら研削加工することが行われている。しか
しながら、上記研削砥石では、砥石外周の研削面4aの全
体が被研削物１の被研削面2aに圧接して研削を行うた
め、被研削面2aが露呈していず、クーラント液が被研削
面2aにかかりにくく冷却効果が小さいという問題があ
る。また、研削抵抗が大であるため、被研削物１の送り
速度を早くすることが困難であり生産性が悪いという問
題を有している。By the way, in the above grinding process, since the grinding wheel is pressed against the surface of the object to be ground while being rotated at high speed, the object 2a is exposed to extremely high temperatures, and the surface of the surface to be ground 2a is subjected to grinding burn or grinding. Cracks are likely to occur. For this reason,
Grinding is performed while pouring a coolant between the grinding wheel and the surface 2a of the object 1 to be ground. However, in the above grinding wheel, the entire grinding surface 4a on the outer circumference of the grinding wheel is pressed against the grinding surface 2a of the object to be ground 1 for grinding, so that the grinding surface 2a is not exposed and the coolant is not the grinding surface. There is a problem that it is hard to get onto 2a and the cooling effect is small. Further, since the grinding resistance is large, it is difficult to increase the feed rate of the object to be ground 1 and the productivity is poor.
この発明は、このような事情に鑑みなされたもので、冷
却効果を向上させることにより、研削焼け等を生じさせ
ることの極めて少ない研削砥石の提供をその目的とす
る。The present invention has been made in view of the above circumstances, and an object thereof is to provide a grinding wheel having an extremely small amount of grinding burn or the like by improving a cooling effect.
上記の目的を達成するため、この発明の研削砥石は、砥
粒が結合材によつて保持されている砥石であつて、上記
砥石の研削面の被研削面に対する砥石一回転当たりの円
周に沿つた接触面積が砥石の一回転を通じて変化しない
ように研削面が回転軸の周囲に、この回転軸に対し傾斜
した帯状に形成され、かつ上記被研削面と上記研削面と
の圧接面が上記回転軸に対して平行となるように形成さ
れているという構成をとる。In order to achieve the above object, the grinding wheel of the present invention is a grinding wheel in which the abrasive grains are held by a binder, in the circumference per one rotation of the grinding wheel for the surface to be ground of the grinding surface of the grinding wheel. The grinding surface is formed around the rotation axis in the shape of a band inclined with respect to the rotation axis so that the contact area along the surface does not change during one rotation of the grindstone, and the pressure contact surface between the grinding surface and the grinding surface is the above-mentioned. It is formed so as to be parallel to the rotation axis.
すなわち、上記の研削砥石は、研削面が回転軸の周囲に
帯状に形成され、この帯状研削面が回転軸に対して傾斜
している。したがつて、研削砥石と被研削物との圧接に
おける研削点が常に砥石回転軸方向に沿つて横移動す
る。その結果、被研削面の一部が常時露呈することとな
り、そこへクーラント液が直接かかるため、空気による
露呈面の冷却効果とクーラント液による冷却効果とが相
俟つて高効率で冷却が行われるようになり、研削焼け等
の発生を効果的に防止しうるようになる。また、このよ
うに冷却が高効率で行われるようになることに加えて、
接触面積が小さいため研削抵抗が小になる。その結果、
砥石の回転速度を向上させることが可能になり、研削速
度の向上をも実現しうるようになる。そのうえ、上記回
転軸に対して傾斜している帯状研削面は、被研削面に対
する砥石一回転当たりの円周に沿つた接触面積が、砥石
の一回転を通じて変化しないように設定されているた
め、均一に摩耗するようになり片減りを生じない。した
がつて、砥石寿命も長くなる。That is, in the above grinding wheel, the grinding surface is formed in a band shape around the rotating shaft, and the band grinding surface is inclined with respect to the rotating shaft. Therefore, the grinding point in the pressure contact between the grinding wheel and the object to be ground always moves laterally along the rotation axis direction of the wheel. As a result, a part of the surface to be ground is always exposed, and the coolant is directly applied to it, so that the cooling effect of the exposed surface by the air and the cooling effect by the coolant enable the cooling to be performed with high efficiency. As a result, the occurrence of grinding burn can be effectively prevented. In addition to the high efficiency of cooling,
Since the contact area is small, the grinding resistance is small. as a result,
It becomes possible to improve the rotation speed of the grindstone, and it is possible to improve the grinding speed. Moreover, the strip-shaped grinding surface inclined with respect to the rotation axis, the contact area along the circumference of the grinding wheel per rotation to the surface to be ground is set so as not to change through one rotation of the grinding wheel, Wears evenly and does not cause uneven wear. Therefore, the life of the grindstone is extended.
つぎに、この発明を実施例にもとづいて詳細に説明す
る。Next, the present invention will be described in detail based on examples.
第１図はこの発明の研削砥石の一実施例を示している。
すなわち、この研削砥石６は、円柱形のアルミニウム製
台金７の側面の一部に、点7a,7bでそれぞれ互いの両端
が接した状態の２個の帯状研削面８が形成されている。
上記研削面８は、第２図に示すように、回転軸９に対し
て傾斜した正面視略平行四辺形の帯状体であり、被研削
物10との圧接面である被研削面11が回転軸９に対して平
行となるように形成されている。FIG. 1 shows an embodiment of the grinding wheel of the present invention.
That is, in this grinding wheel 6, two strip-shaped grinding surfaces 8 are formed on a part of the side surface of a cylindrical aluminum base metal 7 with their ends contacting each other at points 7a and 7b.
As shown in FIG. 2, the grinding surface 8 is a belt-shaped body which is inclined with respect to the rotating shaft 9 and has a substantially parallelogram shape in a front view, and a grinding surface 11 which is a pressure contact surface with the grinding object 10 rotates. It is formed so as to be parallel to the axis 9.
この研削砥石６は、例えばつぎのようにして製造するこ
とができる。すなわち、まず、レジノイド結合材にCBN
砥粒を所定量添加し、均一に混合する。この混合物をア
ルミニウム製台金７の側面に、第１図に示すように帯状
に塗布する。ついで、これを炉に入れて焼結させると、
目的とする研削砥石６が得られる。なお、上記製法にお
いて、結合材および砥粒の種類は上記の外、目的に応じ
て適宜選択される。The grinding wheel 6 can be manufactured, for example, as follows. That is, first, CBN was added to the resinoid binder.
A predetermined amount of abrasive grains is added and uniformly mixed. This mixture is applied to the side surface of the aluminum base metal 7 in a strip shape as shown in FIG. Then put it in a furnace and sinter
The target grinding wheel 6 is obtained. In the above manufacturing method, the types of the binder and the abrasive grains are appropriately selected according to the purpose other than the above.
この研削砥石６を用いた研削は、つぎのように特徴的な
研削となる。すなわち、第２図に示すように、図面に対
して垂直方向にテーブル（図示せず）を移動させて被研
削物10をクリープフイード研削にかけると、砥石６の切
込み点は図示の被研削面11上の点Ｐから順次被研削面11
上を左へ移動していくことになる。しかも、上記研削面
８は、砥石６の回転軸９に対し傾斜して形成されている
ため、砥石６の研削面８上の点Ｐ′は、砥石６の回転に
よつて砥石６の側面6aの円周に沿つて回転移動する。し
たがつて、砥石６の上記研削面８上の点Ｐ′は、間欠的
に被研削物10の点Ｐに対して圧接するようになり、その
点Ｐ′においては研削が断続的に行われるようになる。
そして、この研削面８の一回転の展開図である第３図に
示すように、被研削面11上の任意部位Ａに対する研削面
８の砥石一回転当たりの接触面積はａ＋ａ′となり、こ
れは任意部位Ａを被研削面11上を左右に移動させても、
どの位置でも同じになる。したがつて、研削時における
研削面８に対しては、どの部分においても均等に、研削
負担がかかるようになり、研削面８の片減りを生じな
い。Grinding using this grinding wheel 6 is a characteristic grinding as follows. That is, as shown in FIG. 2, when a table (not shown) is moved in the direction perpendicular to the drawing and the object 10 to be ground is subjected to creep feed grinding, the cutting point of the grindstone 6 becomes The surface to be ground 11 is sequentially processed from the point P on the surface 11.
It will move to the left on the top. Moreover, since the grinding surface 8 is formed so as to be inclined with respect to the rotation axis 9 of the grindstone 6, the point P ′ on the grinding surface 8 of the grindstone 6 is caused by the rotation of the grindstone 6 to the side surface 6 a of the grindstone 6. It rotates and moves along the circumference of. Therefore, the point P'on the grinding surface 8 of the grindstone 6 intermittently comes into pressure contact with the point P of the object to be ground 10, and the grinding is intermittently performed at the point P '. Like
Then, as shown in FIG. 3 which is a development view of the grinding surface 8 in one rotation, the contact area of the grinding surface 8 with respect to the arbitrary portion A on the surface 11 to be ground per rotation of the grindstone is a + a '. Even if the arbitrary part A is moved left and right on the surface 11 to be ground,
It will be the same at any position. Therefore, the grinding load is evenly applied to any part of the grinding surface 8 during grinding, and uneven wear of the grinding surface 8 does not occur.
このように、この研削砥石６は、研削面８が、砥石回転
軸９に対して傾斜した帯状体に形成されているため、砥
石６と被研削物10の圧接の際、その切込み点が順次研削
面８の側縁8aまたは8bに沿つて移動し、この移動によつ
て常時鋭い切込みを行うことができる。しかも、研削面
８の各部分においては研削が断続的に行われることとな
るため、研削時の発熱が断続的になり、砥石６および被
研削物10の損傷も少なくなる。また、被研削部位にクー
ラント液をかけると、従来研削屑の除去効率と冷却効率
が悪かつたのに対し、上記断続的な研削のとぎれ目に効
率よく研削屑の除去と研削点の冷却ができるため、研削
が良好に進行する。さらに、被研削面11上のどの部分に
対しても研削面８の接触面積が等しいため、研削面８自
身の各部分において研削負担が均等化され、このため、
研削面８の摩耗にムラがなくなり、砥石６の長寿命化が
達成できる。また、研削面８の接触面積が小さいため、
研削抵抗が小となり砥石６の回転速度を向上することが
可能になる。このように、この砥石６を用いると、研削
抵抗が小さくなるとともに研削点が砥石の回転によつて
回転軸方向に沿つて常時横移動するため、被研削面の一
部が常時露呈し、空気やクーラント液による冷却効果が
向上し、研削焼け等の被研削面表層の損傷および砥石の
損傷を防止することができる。また、この結果、研削速
度を早くすることができ、生産性の向上効果が得られる
ようになる。As described above, since the grinding surface 8 of the grinding wheel 6 is formed in the shape of a band inclined with respect to the wheel rotation axis 9, the cutting points of the grinding wheel 6 and the object to be ground 10 are sequentially pressed when the wheel 6 and the object 10 are pressed. It moves along the side edge 8a or 8b of the grinding surface 8, and a sharp cut can always be made by this movement. Moreover, since the grinding is intermittently performed in each part of the grinding surface 8, the heat generated during the grinding is intermittent, and the grindstone 6 and the object to be ground 10 are less damaged. In addition, when coolant is applied to the part to be ground, the efficiency of removing grinding chips and the cooling efficiency were poor, whereas the removal of grinding chips and cooling of the grinding point were performed efficiently at the intermittent breaks. Therefore, the grinding proceeds well. Further, since the contact area of the grinding surface 8 is equal to any part on the surface 11 to be ground, the grinding load is equalized in each part of the grinding surface 8 itself.
The wear of the grinding surface 8 is uniform and the life of the grindstone 6 can be extended. Further, since the contact area of the grinding surface 8 is small,
The grinding resistance becomes small, and the rotation speed of the grindstone 6 can be improved. As described above, when the grindstone 6 is used, the grinding resistance becomes small and the grinding point always moves laterally along the rotation axis direction due to the rotation of the grindstone, so that a part of the surface to be ground is always exposed, It is possible to improve the cooling effect of the coolant and the coolant, and prevent damage to the surface layer of the surface to be ground such as grinding burn and damage to the grindstone. Further, as a result, the grinding speed can be increased and the productivity can be improved.
なお、上記研削はクリープフイード研削について述べた
が、他の研削に適用しても同様の効果が得られる。特
に、プランジ研削での使用により高研削性を発揮し、高
生産性を得ることができる。The above-mentioned grinding is described as creep feed grinding, but the same effect can be obtained by applying it to other grinding. In particular, when used in plunge grinding, high grindability is exhibited and high productivity can be obtained.
また、この発明の研削砥石は、第１図に示すような砥石
６の外、第４図および第５図に示すように構成してもよ
い。Further, the grinding wheel of the present invention may be constructed as shown in FIGS. 4 and 5 in addition to the grinding wheel 6 shown in FIG.
すなわち、第４図の砥石12は、第１図の砥石６と同様の
砥石において、その研削面13に、縁部13aに平行で、か
つ研削面13を２分割する溝部14を設けたものである。こ
の溝部14を設けたことにより、クーラント液が溝部14内
に入り冷却効果がより増大され、研削速度をより速める
ことができる。なお、溝の数は２個に限らず、３〜４個
以上の複数個でもよい。That is, the grindstone 12 of FIG. 4 is the same grindstone as the grindstone 6 of FIG. 1 except that the grinding surface 13 is provided with a groove portion 14 which is parallel to the edge 13a and divides the grinding surface 13 into two. is there. By providing the groove portion 14, the coolant liquid enters the groove portion 14, the cooling effect is further increased, and the grinding speed can be further increased. The number of grooves is not limited to two and may be three to four or more.
また、第５図の砥石15はその２個の研削面16a,16bがそ
れぞれ接点を持たず、回転軸に対して正面視逆向きに傾
斜して形成され、手前の研削面16aと裏面側の研削面16b
とがそれぞれの中心部でクロスして見えるようになつて
いる。第１図の砥石６の研削面８が被研削面11上を左右
にジグザグ移動するのに対し、この砥石15の研削面16a,
16bは常に被研削面11の一方から他方に向かつて移動す
るようになる。このため、研削方向が一定となつた優れ
た研削面を得ることができる。The two grinding surfaces 16a and 16b of the grindstone 15 shown in FIG. 5 have no contact points and are formed to be inclined in the opposite direction to the rotation axis when viewed from the front. Grinding surface 16b
And can be seen to cross each other. While the grinding surface 8 of the grindstone 6 shown in FIG. 1 moves left and right on the surface 11 to be ground, the grinding surface 16a,
16b always moves from one side of the surface 11 to be ground toward the other side. Therefore, it is possible to obtain an excellent ground surface in which the grinding direction is constant.
さらに、この発明の研削砥石は、円柱状台金（第１図に
おける７）の外周面に複数個の小片の砥石シート（セグ
メント砥石）を連続的もしくは断続的に貼着して帯状研
削面を形成したようなものでもよい。Further, the grinding wheel of the present invention has a strip-shaped grinding surface formed by continuously or intermittently adhering a plurality of small pieces of grinding wheel sheets (segment grinding wheels) to the outer peripheral surface of a cylindrical base metal (7 in FIG. 1). It may be formed.
以上のように、この発明の研削砥石は、研削面のつくる
帯状研削面が回転軸に対して傾斜し、かつ被研削物との
圧接面が回転軸に対して平行となるように構成されてい
るため、砥石の被研削物に対する切込み点が順次移動し
研削時の発熱が断続的になり発熱が抑えられるとともに
クーラント液および空気による冷却効果が増大し砥石お
よび被研削物の損傷の少ない優れた研削が実現される。
また、冷却効果増大の結果、研削速度の向上も実現しう
る。そのうえ、研削面が均一に摩耗し片減りを生じない
ため、砥石寿命を延ばすことが可能になる。As described above, the grinding wheel of the present invention is configured such that the strip-shaped grinding surface formed by the grinding surface is inclined with respect to the rotation axis, and the pressure contact surface with the workpiece is parallel to the rotation axis. Since the cutting point of the grindstone with respect to the object to be ground moves sequentially, the heat generation during grinding is intermittent and heat generation is suppressed, and the cooling effect by the coolant and air is increased, and the damage to the grindstone and the object to be ground is small. Grinding is realized.
Further, as a result of the increased cooling effect, the grinding speed can be improved. In addition, since the ground surface is evenly worn and uneven wear does not occur, the life of the grindstone can be extended.
第１図はこの発明の一実施例を示す斜視図、第２図はそ
の説明図、第３図は上記実施例の研削面を示す展開図、
第４図は他の実施例の説明図、第５図はさらに他の実施
例の説明図、第６図は従来例の説明図である。 ６…研削砥石、８…研削面、９…回転軸、10…被研削
物、11…被研削面FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an explanatory view thereof, and FIG. 3 is a development view showing a grinding surface of the above embodiment,
FIG. 4 is an explanatory view of another embodiment, FIG. 5 is an explanatory view of yet another embodiment, and FIG. 6 is an explanatory view of a conventional example. 6 ... Grinding wheel, 8 ... Grinding surface, 9 ... Rotating shaft, 10 ... Grinding object, 11 ... Grinding surface
Claims (1)
であつて、上記砥石の研削面の被研削面に対する砥石一
回転当たりの円周に沿つた接触面積が砥石の一回転を通
じて変化しないように研削面が回転軸の周囲に、この回
転軸に対し傾斜した帯状に形成され、かつ上記被研削面
と上記研削面との圧接面が上記回転軸に対して平行とな
るように形成されていることを特徴とする研削砥石。1. A grindstone in which abrasive grains are held by a bonding material, wherein the contact area of the grinding surface of the grindstone along the circumference of the grindstone per revolution of the grindstone is The grinding surface is formed around the rotation axis so as not to change, in the shape of a band inclined with respect to the rotation axis, and the pressure contact surface between the grinding surface and the grinding surface is parallel to the rotation axis. A grinding wheel characterized by being formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61297060A JPH0716883B2 (en) | 1986-12-12 | 1986-12-12 | Grinding wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61297060A JPH0716883B2 (en) | 1986-12-12 | 1986-12-12 | Grinding wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63150163A JPS63150163A (en) | 1988-06-22 |
| JPH0716883B2 true JPH0716883B2 (en) | 1995-03-01 |
Family
ID=17841695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61297060A Expired - Lifetime JPH0716883B2 (en) | 1986-12-12 | 1986-12-12 | Grinding wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716883B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4370713B2 (en) * | 2000-10-25 | 2009-11-25 | 三菱マテリアル株式会社 | Resin bond grinding wheel |
| JP2010131727A (en) * | 2008-12-08 | 2010-06-17 | Hironori Kawamura | Grinding tool with grinding chip retracting part |
| JP2011218512A (en) * | 2010-04-13 | 2011-11-04 | Toyoda Van Moppes Ltd | Block dresser for surface grinding machine |
| JP5373171B1 (en) | 2012-10-20 | 2013-12-18 | 株式会社ナノテム | Grinding wheel and grinding / polishing apparatus using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247383B2 (en) * | 1972-02-04 | 1977-12-02 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS555238Y2 (en) * | 1975-10-01 | 1980-02-06 |
-
1986
- 1986-12-12 JP JP61297060A patent/JPH0716883B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247383B2 (en) * | 1972-02-04 | 1977-12-02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63150163A (en) | 1988-06-22 |
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