JPH0448931Y2 - - Google Patents
Info
- Publication number
- JPH0448931Y2 JPH0448931Y2 JP1985110052U JP11005285U JPH0448931Y2 JP H0448931 Y2 JPH0448931 Y2 JP H0448931Y2 JP 1985110052 U JP1985110052 U JP 1985110052U JP 11005285 U JP11005285 U JP 11005285U JP H0448931 Y2 JPH0448931 Y2 JP H0448931Y2
- Authority
- JP
- Japan
- Prior art keywords
- grinding
- workpiece
- grindstone
- quill
- grinding 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
Links
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 244000145845 chattering Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、ワークの内周面にその孔部中心方向
に断続的に形成された同一径の複数の研削加工面
をクイル外周に設けた砥石で研削するようにした
内面研削用工具の改良に関する。[Detailed description of the invention] (Field of industrial application) The invention is based on a method in which a plurality of ground surfaces of the same diameter are provided on the outer periphery of the quill, which are intermittently formed on the inner peripheral surface of the workpiece in the direction of the center of the hole. This invention relates to an improvement of an internal grinding tool that uses a whetstone for grinding.
（従来の技術）
従来、このような工具としては、例えばクイル
の先端外周面にワークの研削加工面に対応するよ
うに所定間隔をあけて配置された複数の砥石を固
着し、クイルを回転させながらオシレート運動さ
せてワークの研削加工面を研削するようにしたも
のがよく知られている（例えば実開昭55−85263
号公報参照）。(Prior art) Conventionally, such a tool has, for example, fixed a plurality of grindstones arranged at predetermined intervals to the outer peripheral surface of the tip of a quill so as to correspond to the grinding surface of a workpiece, and rotates the quill. It is well known that the grinding surface of the workpiece is ground using oscillating motion (for example, Utility Model No. 55-85263)
(see publication).
（考案が解決しようとする課題）
ところが、上記の従来のものでは、ワークの内
周面を研削する砥石はクイルの軸心方向に複数箇
所で分割された分割タイプのものであり、クイル
には砥石が設けられていない箇所が断続的にある
ことから、クイルの剛性を良好に得ることができ
ず、研削時にクイルにたわみやビビリが発生して
ワーク内面を高精度に研削することが困難になる
問題があつた。(Problem to be solved by the invention) However, in the above-mentioned conventional grinding wheel, the grindstone for grinding the inner peripheral surface of the workpiece is a split type that is divided at multiple points in the axial direction of the quill. Since there are intermittent areas where a grindstone is not installed, it is not possible to obtain good quill rigidity, and the quill causes deflection and chatter during grinding, making it difficult to grind the inner surface of the workpiece with high precision. A problem arose.
そこで、上記の問題点を解決する手段として、
クイルの外周全面を〓間なく砥石で覆つてクイル
の剛性を確保するようにすることにより、ワーク
研削時におけるクイルのたわみやビビリを抑えて
ワークに対する研削精度の向上を図ることが考え
られる。ところが、この場合においては、砥石の
ワーク研削加工に直接関与する箇所、すなわちワ
ークの研削加工面に接触する箇所は研削に伴い摩
耗して小径となるのに対し、砥石の研削加工に直
接関与しない箇所、すなわちワークの研削加工面
に接触しない箇所は研削されずに元の径が保持さ
れ、両者の境に段差が生ずる。その結果、この段
差部が研削時のオシレート運動によつて研削加工
面の端部の干渉して該端部にアール部が形成され
るという新たな問題が生じる。また、砥石をドレ
ス装置によりドレスする際にも上記段差部が障害
となつてドレス装置の機能が阻害されるという別
の問題もある。 Therefore, as a means to solve the above problems,
It is conceivable that by immediately covering the entire outer circumference of the quill with a grindstone to ensure the rigidity of the quill, the deflection and chatter of the quill during grinding of the workpiece can be suppressed and the accuracy of grinding the workpiece can be improved. However, in this case, the part of the grindstone that is directly involved in the grinding process of the workpiece, that is, the part that comes into contact with the grinding surface of the workpiece, wears out as a result of grinding and becomes small in diameter, whereas the part of the grindstone that is not directly involved in the grinding process of the workpiece wears out and becomes small in diameter. The parts, that is, the parts that do not come into contact with the grinding surface of the workpiece, are not ground and the original diameter is maintained, and a step is created at the boundary between the two parts. As a result, a new problem arises in that this step portion interferes with the end portion of the ground surface due to the oscillating motion during grinding, and a rounded portion is formed at the end portion. Furthermore, there is another problem in that the step portion becomes an obstacle when dressing the grindstone using the dressing device, and the function of the dressing device is obstructed.
本考案はかかる諸点に鑑みてなされたものであ
り、その目的とするところは、クイル外周に設け
る砥石の構成を適切に特定することにより、クイ
ルの剛性を確保するとともに、ワーク研削加工面
の加工精度の向上を図り、かつドレス装置のドレ
ス機能の阻害をも防止せんとすることにある。 The present invention was developed in view of these points, and its purpose is to ensure the rigidity of the quill and to improve the grinding surface of the workpiece by appropriately specifying the configuration of the grindstone provided on the outer periphery of the quill. The object is to improve accuracy and also to prevent interference with the dressing function of the dressing device.
（課題を解決するための手段）
上記の目的を達成するため、本考案は、ワーク
の内周面にその孔部中心方向に断続的に形成され
た同一径の複数の研削加工面をクイル外周に設け
た砥石で該砥石をクイル軸心回りに回転させなが
らワークの孔部中心方向にオシレート運動させる
ことにより研削するようにした工具を対象とし、
次のような解決手段を講じた。(Means for Solving the Problems) In order to achieve the above object, the present invention has a plurality of ground surfaces of the same diameter that are intermittently formed on the inner peripheral surface of the workpiece in the direction of the hole center. The object is a tool that performs grinding by rotating the grindstone around the quill axis and making an oscillating movement in the direction of the center of the hole in the workpiece, using a grindstone installed in the tool.
The following solutions were taken.
すなわち、本考案の解決手段は、上記砥石を、
上記ワークの研削加工面とほぼ同一幅に設定さ
れ、研削時、該研削加工面に対応位置して研削加
工面を研削する硬度の高いワーク研削用の第１砥
石部と、上記ワークの非研削加工面とほぼ同一幅
にかつ上記第１砥石部と同一径に設定されている
とともに、第１砥石部間に位置して該第１砥石部
と一体的に設けられ、かつ第１砥石部よりも硬度
が低く設定され、研削時、上記非研削加工面に対
応位置する第２砥石部とで構成したことを特徴と
する。 That is, the solution of the present invention is that the above-mentioned grindstone is
A first grindstone part for grinding a hard workpiece, which is set to have almost the same width as the grinding surface of the workpiece, and is positioned corresponding to the grinding surface during grinding to grind the grinding surface; It is set to have approximately the same width as the machining surface and the same diameter as the first grinding wheel part, and is located between the first grinding wheel parts and is provided integrally with the first grinding wheel part, and from the first grinding wheel part. The hardness of the grinding wheel is set to be low, and the grinding wheel is configured with a second grindstone portion positioned corresponding to the non-grinding surface during grinding.
（作用）
上記の構成により、本考案では、ワークの内周
面に、その孔部中心方向に断続的に形成された同
一径の複数の研削加工面は、工具のクイル外周に
設けられたワーク研削用の第１砥石部で該砥石を
クイル軸心回りに回転させながらワークの孔部中
心方向にオシレート運動させることにより研削さ
れる。(Function) With the above configuration, in the present invention, the plurality of grinding surfaces of the same diameter that are intermittently formed on the inner circumferential surface of the workpiece in the direction of the hole center are Grinding is performed by rotating the first grinding wheel around the quill axis and making an oscillating movement toward the center of the hole of the workpiece.
この際、上記クイルは、上記第１砥石部と該第
１砥石部間に位置して該第１砥石部と一体的に設
けられた第２砥石部とで全体的に覆われているの
で、その剛性が確保され、ワーク研削時にたわみ
やビビリが発生することがなく、よつてワークの
研削加工面が高精度に研削されることとなる。 At this time, the quill is entirely covered by the first grindstone part and a second grindstone part located between the first grindstone parts and provided integrally with the first grindstone part. Its rigidity is ensured, and no deflection or chatter occurs during grinding of the workpiece, so that the grinding surface of the workpiece can be ground with high precision.
また、上記第２砥石部は第１砥石部よりも硬度
が低いので、研削時における砥石のオシレート運
動によつて第２砥石部の上記研削加工面と干渉す
る箇所はその干渉によつてワーク研削加工面の端
部を傷付ける（研削する）ことなくそれ自体で摩
耗することから、研削加工面の端部にはアール部
が形成されず、よつてワークが高精度に研削され
ることとなる。 In addition, since the second grinding wheel part has a lower hardness than the first grinding wheel part, the parts where the grinding surface of the second grinding wheel part interferes with the grinding surface due to the oscillating motion of the grinding wheel during grinding are grounded by the workpiece due to the interference. Since the edge of the machined surface is worn by itself without being damaged (ground), no rounded portion is formed at the edge of the ground surface, and the workpiece is therefore ground with high precision.
（実施例）
以下、本考案の実施例を図面に基づいて説明す
る。(Example) Hereinafter, an example of the present invention will be described based on the drawings.
図面は円筒状のワークＷの内周面を研削する本
考案の実施例の内面研削用工具Ａを示し、上記ワ
ークＷは、その孔部中心方向両端部が中央部より
小径に設定された段付孔部Ｈを有する例えば軸受
部材等からなり、上記段付孔部Ｈの各小径部内周
面が研削加工面h1に構成されている。よつてワー
クＷ内周面には２つの同一径の研削加工面h1，h1
が非研削加工面h2を隔ててワークＷの孔部中心方
向に断続的に形成されている。 The drawing shows an internal grinding tool A according to an embodiment of the present invention for grinding the inner circumferential surface of a cylindrical workpiece W. It is made of, for example, a bearing member having a hole H, and the inner circumferential surface of each small diameter portion of the stepped hole H is formed into a ground surface h1 . Therefore, there are two ground surfaces h 1 and h 1 of the same diameter on the inner peripheral surface of the workpiece W.
are formed intermittently in the direction of the hole center of the workpiece W across the non-grinding surface h2 .
一方、上記内面研削用工具Ａは、図示しない内
面研削盤の主軸先端に螺着される螺合部１ａを基
端側に有するクイル１と、該クイル１の外周にそ
の先端から軸心方向略中央部に亘つて固着された
砥石２とで構成されている。 On the other hand, the internal grinding tool A includes a quill 1 having a threaded portion 1a on the proximal end side, which is screwed onto the main shaft end of an internal grinding machine (not shown), and an outer periphery of the quill 1 from the end in the axial direction. It consists of a grindstone 2 fixed to the center.
上記砥石２は、上記ワークＷ内周面の各研削加
工面h1とほぼ同一幅に設定された一対のワーク研
削用の第１砥石部２ａ，２ａを備えてなり、研削
時、クイル１の先端側を上記ワークＷの段付孔部
Ｈ内に挿入した状態でワークＷ内周面の各研削加
工面h1に対応位置して該各研削加工面h1を研削す
るようになされている。 The grindstone 2 includes a pair of first grindstone parts 2a, 2a for grinding the workpiece, which are set to have approximately the same width as each grinding surface h1 of the inner peripheral surface of the workpiece W. With the tip end inserted into the stepped hole H of the workpiece W, it is positioned corresponding to each grinding surface h 1 on the inner circumferential surface of the workpiece W and grinding each grinding surface h 1 . .
また、上記第１砥石部２ａ，２ａ間には第２砥
石部２ｂが位置せしめられ、該第２砥石部２ｂは
両第１砥石部２ａ，２ａと一体的に設けられてい
る。この第２砥石部２ｂは、上記ワークＷ内周面
の非研削加工面h2とほぼ同一幅にかつ上記第１砥
石部２ａ，２ａと同一径に設定されており、研削
時、クイル１の先端側を上記ワークＷの段付孔部
Ｈ内に挿入した状態で上記非研削加工面h2に対応
位置するようになされている。このように、上記
砥石２は、第１砥石部２ａ，２ａと、該両第１砥
石部２ａ，２ａ間に連続的に配置される第２砥石
部２ｂとに軸心方向に３分割されている。 Further, a second grindstone section 2b is positioned between the first grindstone sections 2a, 2a, and the second grindstone section 2b is provided integrally with both the first grindstone sections 2a, 2a. The second grinding wheel part 2b is set to have approximately the same width as the non-grinding surface h2 of the inner peripheral surface of the workpiece W and the same diameter as the first grinding wheel parts 2a, 2a. When the tip end is inserted into the stepped hole H of the workpiece W, it is positioned corresponding to the non-grinding surface h2 . In this way, the grindstone 2 is divided into three parts in the axial direction into the first grindstone parts 2a, 2a and the second grindstone part 2b, which is continuously arranged between the two first grindstone parts 2a, 2a. There is.
さらに、上記各第１砥石部２ａは硬度の高い超
砥粒砥石からなり、一方、第２砥石部２ｂは第１
砥石部２ａよりも硬度の低い、詳しくは研削時に
ワークＷの内周面（研削加工面h1）と干渉したと
きにワークＷによつて容易に削り取られる程度に
硬度の低い砥粒砥石例えば普通砥石で構成されて
いる。このように構成された砥石２は、研削時、
クイル軸心回りに回転しながらワークＷの孔部中
心方向にオシレート運動せしめられるようになさ
れている。 Further, each of the first grinding wheel parts 2a is made of a super-abrasive grinding stone with high hardness, while the second grinding wheel part 2b is made of a super-abrasive grinding stone with high hardness.
An abrasive grindstone with a hardness lower than that of the grindstone portion 2a, specifically, an abrasive grindstone with a hardness so low that it is easily scraped off by the workpiece W when it interferes with the inner circumferential surface of the workpiece W (ground surface h 1 ) during grinding. It consists of a whetstone. The grinding wheel 2 configured in this way can be used during grinding.
While rotating around the quill axis, the quill is caused to oscillate in the direction of the center of the hole in the workpiece W.
したがつて、以上の如く構成された内面研削用
工具Ａを内面研削盤に取り付けて回転させながら
オシレート運動させることにより、ワークＷの各
研削加工面h1を研削する場合、クイル１はそのワ
ークＷの段付孔部Ｈ内に挿入される先端側外周全
面が砥石２で覆われているので、その剛性が確保
され、このことから、ワーク研削時にクイル１自
体にたわみやビビリが発生することはなく、よつ
てワークＷの各研削加工面h1を高精度に研削する
ことができる。 Therefore, when grinding each grinding surface h1 of the workpiece W by attaching the internal grinding tool A configured as described above to an internal grinding machine and causing it to perform an oscillating motion while rotating, the quill 1 is Since the entire outer periphery of the tip end inserted into the stepped hole H of W is covered with the grindstone 2, its rigidity is ensured, and this prevents the quill 1 itself from deflecting or chattering when grinding the workpiece. Therefore, each grinding surface h1 of the workpiece W can be ground with high precision.
また、上記砥石２はクイル１の回転およびオシ
レート運動によつてワークＷの段付孔部Ｈ内を回
転しながらその孔部中心方向に往復移動し、砥石
２のうちの各第１砥石部２ａでワークＷ内周面の
各研削加工面h1が研削される。この際、上記第２
砥石部２ｂの両端部は上記ワークＷの各研削加工
面h1の端部に干渉するが、この第２砥石部２ｂは
上記第１砥石部２ａよりも低硬度であるので、干
渉によつて研削加工面h1を傷付ける（研削する）
ことなく摩耗する。このことから、上記各研削加
工面h1にアール部が形成することがなく、よつて
ワークＷをより一層高精度に研削することができ
る。 Further, the grindstone 2 rotates within the stepped hole H of the work W by the rotation and oscillation motion of the quill 1, and reciprocates toward the center of the hole. Each grinding surface h1 of the inner peripheral surface of the workpiece W is ground. At this time, the above second
Both ends of the grindstone part 2b interfere with the ends of each grinding surface h1 of the workpiece W, but since the second grindstone part 2b has a lower hardness than the first grindstone part 2a, the interference causes Scratch (grind) the grinding surface h 1
It wears out easily. As a result, no rounded portions are formed on each of the grinding surfaces h1 , and thus the work W can be ground with even higher precision.
さらには、ワークＷの研削に直接関与しない第
２砥石部２ｂに硬度の低い普通砥石を使用したの
で、砥石２をドレス装置によりドレスするとき各
第１砥石部２ａを第２砥石部２ｂによつて障害さ
れることなく速やかにドレスでき、ドレス装置の
機能を阻害することはない。 Furthermore, since a normal grindstone with low hardness is used for the second grindstone part 2b which is not directly involved in grinding the workpiece W, when the grindstone 2 is dressed by the dressing device, each first grindstone part 2a is replaced by the second grindstone part 2b. It can be quickly dressed without any interference, and the function of the dressing device is not obstructed.
なお、上記実施例では、２つの第１砥石部２
ａ，２ａ間に第２砥石部２ｂを連続して配置した
３分割タイプの砥石２を例示したが、これに限ら
ず、ワークＷの研削加工面h1の形成状態に応じて
それら砥石部の組合わせを変更することは自由で
あるのは言うまでもない。 In addition, in the above embodiment, two first grindstone parts 2
Although the three-division type grindstone 2 in which the second grindstone part 2b is continuously arranged between a and 2a is illustrated, the grindstone part is not limited to this, and the grindstone parts can be divided depending on the formation state of the grinding surface h1 of the workpiece W. Needless to say, you are free to change the combination.
（考案の効果）
以上説明したように、本考案の内面研削用工具
によれば、クイル外周に設ける砥石を、ワークの
研削加工面とほぼ同一幅に設定されたワーク研削
用第１砥石部と、上記ワークの非研削加工面とほ
ぼ同一幅にかつ上記第１砥石部と同一径に設定さ
れ、該第１砥石部よりも硬度の低い第２砥石部と
で分割構成し、かつ該第２砥石部を第１砥石部と
一体的に設けた。したがつて、クイルの剛性を良
好に確保できるとともに、ワークの研削加工面の
端部にアール部が形成されることを防止でき、よ
つてワーク内面研削精度の向上を図ることができ
るとともに、ドレス作業を円滑に行い得、ドレス
装置のドレス機能の阻害を防止することができ
る。(Effect of the invention) As explained above, according to the internal grinding tool of the invention, the grindstone provided on the outer periphery of the quill is connected to the first grindstone portion for grinding the workpiece, which is set to have approximately the same width as the grinding surface of the workpiece. , a second grinding wheel part that is set to have approximately the same width as the non-grinding surface of the workpiece and the same diameter as the first grinding wheel part, and has a lower hardness than the first grinding wheel part; The grindstone section is provided integrally with the first grindstone section. Therefore, the rigidity of the quill can be ensured well, and it is possible to prevent the formation of a rounded part at the end of the grinding surface of the workpiece, thereby improving the accuracy of internal grinding of the workpiece and improving the dressing. The work can be performed smoothly and the dressing function of the dressing device can be prevented from being impaired.
図面は本考案の実施例に係る内面研削用工具に
よるワーク研削状態を示す縦断側面図である。
１……クイル、２……砥石、２ａ……第１砥石
部、２ｂ……第２砥石部、h1……研削加工面、h2
……非研削加工面、Ａ……内面研削用工具、Ｗ…
…ワーク。
The drawing is a longitudinal sectional side view showing a workpiece being ground by the internal grinding tool according to the embodiment of the present invention. 1... Quill, 2... Grinding wheel, 2a... First grinding wheel part, 2b... Second grinding wheel part, h 1 ... Grinding surface, h 2
...Non-grinding surface, A...Internal grinding tool, W...
…work.
Claims (1)
形成された同一径の複数の研削加工面をクイル外
周に設けた砥石で該砥石をクイル軸心回りに回転
させながらワークの孔部中心方向にオシレート運
動させることにより研削するようにした工具であ
つて、上記砥石は、上記ワークの研削加工面とほ
ぼ同一幅に設定され、研削時、該研削加工面に対
応位置して研削加工面を研削する硬度の高いワー
ク研削用の第１砥石部と、上記ワークの非研削加
工面とほぼ同一幅にかつ上記第１砥石部と同一径
に設定されているとともに、第１砥石部間に位置
して該第１砥石部と一体的に設けられ、かつ第１
砥石部よりも硬度が低く設定され、研削時、上記
非研削加工面に対応位置する第２砥石部とで構成
されていることを特徴とする内面研削用工具。 A grinding wheel is provided on the outer periphery of the quill with a plurality of grinding surfaces of the same diameter intermittently formed on the inner peripheral surface of the workpiece in the direction of the center of the hole. The grinding wheel is set to have approximately the same width as the grinding surface of the workpiece, and during grinding, the grindstone is positioned corresponding to the grinding surface of the workpiece. A first grinding wheel section for grinding a highly hard workpiece, which is set to have approximately the same width as the non-grinding surface of the workpiece and the same diameter as the first grinding wheel section, and a groove between the first grinding wheel sections. located and provided integrally with the first grindstone portion, and the first grindstone portion.
A tool for internal grinding, characterized in that it is configured with a second grindstone part that is set to have a lower hardness than the grindstone part and is positioned corresponding to the non-grinding surface during grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985110052U JPH0448931Y2 (en) | 1985-07-18 | 1985-07-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985110052U JPH0448931Y2 (en) | 1985-07-18 | 1985-07-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6219166U JPS6219166U (en) | 1987-02-04 |
| JPH0448931Y2 true JPH0448931Y2 (en) | 1992-11-18 |
Family
ID=30988715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985110052U Expired JPH0448931Y2 (en) | 1985-07-18 | 1985-07-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0448931Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5292186A (en) * | 1976-01-29 | 1977-08-03 | Toshiba Corp | Grinding stone for inner surfaces |
| JPS5783372A (en) * | 1980-10-31 | 1982-05-25 | Yasuo Arakawa | Metal bond grinder element composed of main and auxiliary grinding layers |
-
1985
- 1985-07-18 JP JP1985110052U patent/JPH0448931Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5292186A (en) * | 1976-01-29 | 1977-08-03 | Toshiba Corp | Grinding stone for inner surfaces |
| JPS5783372A (en) * | 1980-10-31 | 1982-05-25 | Yasuo Arakawa | Metal bond grinder element composed of main and auxiliary grinding layers |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6219166U (en) | 1987-02-04 |
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