JPS60150955A - Internal grinding method - Google Patents
Internal grinding methodInfo
- Publication number
- JPS60150955A JPS60150955A JP608484A JP608484A JPS60150955A JP S60150955 A JPS60150955 A JP S60150955A JP 608484 A JP608484 A JP 608484A JP 608484 A JP608484 A JP 608484A JP S60150955 A JPS60150955 A JP S60150955A
- Authority
- JP
- Japan
- Prior art keywords
- spacer
- grindstone
- ground
- hole
- 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.)
- Pending
Links
Landscapes
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は孔の内面を寸法精度良く研削することができる
内面研削加工法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an internal grinding method capable of grinding the inner surface of a hole with high dimensional accuracy.
（従来技術）
孔の内面研削加工は回転軸の先端に取付けられた回転砥
石を高速度で回転させつつ被加工物との間に往復運動及
び回転送り運動を与えて研削を行うものであるが、盲孔
、透孔を問わず加工すべき孔の内径が小さくかつ孔が深
い場合には回転軸を細長くする必要があるため回転砥石
の研削抵抗により回転軸が撓み易く、高い寸法精度が得
られない欠点があった。(Prior art) Internal grinding of a hole is performed by rotating a rotary grindstone attached to the tip of a rotating shaft at high speed while applying reciprocating motion and rotary feeding motion between the grindstone and the workpiece. When the inner diameter of the hole to be machined is small and deep, regardless of whether it is a blind hole or a through hole, the rotating shaft needs to be made elongated, so the rotating shaft easily bends due to the grinding resistance of the rotary grindstone, resulting in high dimensional accuracy. There was a drawback that it could not be done.
（発明の目的）
本発明はこのような従来の欠点を解消して細長い孔の内
面を寸法精度良く研削することができる内面研削加工法
を目的として完成されたものである。(Objective of the Invention) The present invention was completed with the object of an internal grinding method capable of eliminating such conventional drawbacks and grinding the inner surface of a long and narrow hole with high dimensional accuracy.
（発明の構成）
本発明は被研削孔の内部に回転砥石と、該回転砥石の研
削面とは反対側の被研削孔の内面に当接するスペーサー
とを略同−深さに挿入し、回転砥石の回転軸の先端付近
とスペーサーとの間に介在させた模面付きの拡開部材に
より両者間の距離を調節しつつ回転砥石を回転させて内
面研削を行うことを特徴とするものであり、以下、図示
の実施例について詳細に説明する。(Structure of the Invention) The present invention involves inserting a rotary grindstone into a hole to be ground and a spacer that comes into contact with the inner surface of the hole to be ground on the opposite side from the grinding surface of the rotary grindstone to approximately the same depth, and rotating the grindstone. The grindstone is characterized in that internal grinding is performed by rotating the whetstone while adjusting the distance between them using a patterned expansion member interposed between the vicinity of the tip of the rotating shaft of the whetstone and the spacer. Hereinafter, the illustrated embodiment will be described in detail.
図中（１１は被加工物（２）に予め穿設された被研削孔
であり、該被研削孔（１）の内部に主軸台（３）に基部
が支持された回転砥石（４）とスペーサー（５）とを主
軸台（３）を移動させることにより略同−深ざに挿入す
る。回転砥石（４）は回転軸（６）の先端に取付けられ
ており主軸台（３）の内部のモーターにより１００〜２
０００ｍ／分の周速度で回転される。スペーサー（５）
は支持棒（７）の先端に支持されており、その外表面に
は回転砥石（４）の研削面（８）とは反対側の被研削孔
（１）の内面に当接するための曲面（９）が形成されて
おり、また支持棒（７）の取付部より内側には第１図の
ように斜面（１０）が形成されている。主軸台（３）は
往復運動を行うものであるが、この間回転砥石（４）と
スペーサー（５）とは常に略同−深さまで被研削孔ｆｌ
）の内部へ挿入されるため、スペーサー（５）の曲面（
９）は回転砥石（４）が研削面（８）から受ける研削抵
抗を常に垂直に受ける位置を取る。このように回転砥石
（４）とスペーサー（５）とを被研削孔（Ｉｔの内部に
挿入したうえ、更に主軸台（３）に設けられた楔面（１
１）付きの拡開部材（１２）をその楔面（］１）がスペ
ーサ−（５）の斜面（１０）に接触するとともに楔面（
１１）の反対方向に突設された突片（１３）が回転砥石
（４）の回転軸（６）の先端付近に接触する位置まで前
進させる。この状態で拡開部材（１２）を油圧等により
更に前進させればスペーサー（八）は楔面（１１）によ
り外方に移動してスペーサー（５）の曲面（９）と回転
砥石（４）の研削面（８）との距離は拡大し、逆に拡開
部材（１２）を後退させればスペーサー（５）は支持棒
（７）の弾性により内方に移動してスペーサー（５）の
曲面（９）と回転砥石（４）の研削面（８）との距離は
縮小するから、拡開部材（１２）により両者間の距離を
調節しつつ回転砥石（４）を回転させて内面研削を行え
ば被研削孔（１）の内面に対する回転砥石（４）の位置
及び接触圧力を一定に保つことができるから被研削孔口
）の内面は寸法精度良く内面研削されることとなる。な
お、スペーサ−（５）の先端部（１４）は第１図のよう
に面取りしてスペーサ＝（５）の挿入が円滑に行われる
ようにしておくことが好ましい。In the figure (11 is a hole to be ground drilled in advance in the workpiece (2), and inside the hole (1) to be ground is a rotary grindstone (4) whose base is supported by a headstock (3). By moving the headstock (3), the spacer (5) and the spacer (5) are inserted at approximately the same depth.The rotating grindstone (4) is attached to the tip of the rotating shaft (6), and 100~2 depending on the motor
It rotates at a circumferential speed of 000 m/min. Spacer (5)
is supported at the tip of the support rod (7), and its outer surface has a curved surface () for contacting the inner surface of the hole to be ground (1) on the opposite side of the grinding surface (8) of the rotary grindstone (4). 9) is formed, and a slope (10) is formed inside the attachment part of the support rod (7) as shown in FIG. The headstock (3) performs reciprocating motion, and during this time the rotating grindstone (4) and spacer (5) are always working to maintain the ground hole fl to approximately the same depth.
), the curved surface of the spacer (5) (
9) is in a position where the rotary grindstone (4) always receives the grinding resistance vertically from the grinding surface (8). In this way, the rotating grindstone (4) and the spacer (5) are inserted into the hole to be ground (It), and the wedge surface (1) provided on the headstock (3) is
1) with its wedge surface (1) in contact with the slope (10) of the spacer (5) and the wedge surface (1)
The protruding piece (13) protruding in the opposite direction of 11) is advanced to a position where it comes into contact with the vicinity of the tip of the rotating shaft (6) of the rotary grindstone (4). In this state, if the expanding member (12) is further advanced by hydraulic pressure or the like, the spacer (8) will be moved outward by the wedge surface (11), and the curved surface (9) of the spacer (5) and the rotating grindstone (4) will be moved outward. The distance between it and the grinding surface (8) increases, and conversely, when the expanding member (12) is moved backward, the spacer (5) moves inward due to the elasticity of the support rod (7), and the distance between the spacer (5) and the grinding surface (8) increases. Since the distance between the curved surface (9) and the grinding surface (8) of the rotary grindstone (4) is reduced, the distance between the two is adjusted by the expanding member (12) and the rotary grindstone (4) is rotated for internal grinding. If this is done, the position and contact pressure of the rotary grindstone (4) with respect to the inner surface of the hole to be ground (1) can be kept constant, so that the inner surface of the hole to be ground (the mouth of the hole to be ground) can be internally ground with good dimensional accuracy. Note that it is preferable that the tip end (14) of the spacer (5) be chamfered as shown in FIG. 1 so that the spacer (5) can be inserted smoothly.
（発明の効果）
本発明は以上の説明からも明らかなように、従来は回転
軸のみにより支持されていたため回転軸を細長くする必
要のある場合には研削抵抗により逃げを生じ易かった回
転砥石を、その回転軸の先端付近と研削面とは反対側の
被研削孔の内面に当接するスペーサーとの間に介在させ
た拡開部材により支持させることにより逃げを防止する
とともに、該拡開部材の楔面を利用してスペーサーと回
転砥石との距離を精密に調節しつつ内面研削を行うよう
にしたので、細長い被研削孔の内面を高い寸法精度で研
削加工することができる。しがも、スペーサーは被研削
孔の内部に回転砥石と略同−深さまで挿入されるもので
あるから、回転砥石が研削面から受ける研削抵抗は常に
スペーサーによって垂直に受止められて被研削物と回転
砥石との間に研削抵抗による回転モーメン１−が生ずる
ことがなく、高い寸法精度を得るに好適である。よって
本発明は従来の内面研削加工法の欠点を解消したものと
して業界に寄与するところ大なものである。(Effects of the Invention) As is clear from the above description, the present invention replaces the rotary grindstone, which was conventionally supported only by the rotating shaft and was likely to run out due to grinding resistance when the rotating shaft needed to be elongated. , is supported by an expanding member interposed between the vicinity of the tip of the rotating shaft and a spacer that abuts the inner surface of the hole to be ground on the opposite side to the grinding surface. Since internal grinding is performed while precisely adjusting the distance between the spacer and the rotating grindstone using the wedge surface, it is possible to grind the inner surface of a long and narrow hole to be ground with high dimensional accuracy. However, since the spacer is inserted into the hole to be ground to approximately the same depth as the rotating grinding wheel, the grinding resistance that the rotating grinding wheel receives from the grinding surface is always absorbed vertically by the spacer, and the spacer is inserted into the hole to be ground to approximately the same depth as the rotating grinding wheel. A rotational moment 1- due to grinding resistance is not generated between the grinding wheel and the rotating grindstone, which is suitable for obtaining high dimensional accuracy. Therefore, the present invention greatly contributes to the industry by eliminating the drawbacks of conventional internal grinding methods.
第１図は本発明の実施に用いられる装置の一例を示す一
部切欠正面図、第２図はそのＡ−Ａ断面図である。
（ｌ）：被研削孔、（４）：回転砥石、（５）ニスペー
サ−１（６１：回転軸、（１１） ：楔面、（１２）
：拡開部材。
特許出願人 株式会社エフェスヶ−FIG. 1 is a partially cutaway front view showing an example of a device used for carrying out the present invention, and FIG. 2 is a cross-sectional view taken along line A-A. (l): Hole to be ground, (4): Rotary grindstone, (5) Varnish spacer-1 (61: Rotating shaft, (11): Wedge surface, (12)
: Expansion member. Patent applicant: Efesga Co., Ltd.
Claims (1)
反対側の被研削孔の内面に当接するスペーサーとを略同
−深さに挿入し、回転砥石の回転軸の先端付近とスペー
サーとの間に介在させた模面付きの拡開部材により両者
間の距離を調節しつつ回転砥石を回転させて内面研削を
行うことを特徴とする内面研削加工法。A rotary whetstone and a spacer that contacts the inner surface of the hole to be ground on the opposite side from the grinding surface of the rotary whetstone are inserted into the hole to be ground to approximately the same depth, and the spacer is inserted near the tip of the rotating shaft of the rotary whetstone. An internal grinding method characterized by performing internal grinding by rotating a rotary grindstone while adjusting the distance between the spacer and a patterned expansion member interposed between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP608484A JPS60150955A (en) | 1984-01-17 | 1984-01-17 | Internal grinding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP608484A JPS60150955A (en) | 1984-01-17 | 1984-01-17 | Internal grinding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60150955A true JPS60150955A (en) | 1985-08-08 |
Family
ID=11628674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP608484A Pending JPS60150955A (en) | 1984-01-17 | 1984-01-17 | Internal grinding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60150955A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006051599A (en) * | 2004-08-13 | 2006-02-23 | General Electric Co <Ge> | Track type grinding tool |
| CN103302561A (en) * | 2013-06-14 | 2013-09-18 | 攀钢集团成都钢钒有限公司 | Equipment for grinding scale on inner surface of pipe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5834749A (en) * | 1981-08-13 | 1983-03-01 | Minatogumi:Goushi | Tube internal grinding machine |
-
1984
- 1984-01-17 JP JP608484A patent/JPS60150955A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5834749A (en) * | 1981-08-13 | 1983-03-01 | Minatogumi:Goushi | Tube internal grinding machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006051599A (en) * | 2004-08-13 | 2006-02-23 | General Electric Co <Ge> | Track type grinding tool |
| CN103302561A (en) * | 2013-06-14 | 2013-09-18 | 攀钢集团成都钢钒有限公司 | Equipment for grinding scale on inner surface of pipe |
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