JPS61154706A - Grinding method of rotating body - Google Patents
Grinding method of rotating bodyInfo
- Publication number
- JPS61154706A JPS61154706A JP27357884A JP27357884A JPS61154706A JP S61154706 A JPS61154706 A JP S61154706A JP 27357884 A JP27357884 A JP 27357884A JP 27357884 A JP27357884 A JP 27357884A JP S61154706 A JPS61154706 A JP S61154706A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- grinding
- grindstone
- wheel
- axis
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B28/00—Maintaining rolls or rolling equipment in effective condition
- B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
- B21B28/04—Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing or grinding while the rolls are in their stands
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- 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、回転する物体の外周面の研削を行う研削装置
に関し、特に熱間圧延機等の圧延機のワークロールのオ
ンライン研削に用いて好適なものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a grinding device for grinding the outer circumferential surface of a rotating object, particularly for use in online grinding of work rolls of rolling mills such as hot rolling mills. It is suitable.
〈従来の技術〉
鋼板等を圧延する熱間圧延機においては、圧延時のワー
クロールの摩耗はバックアップロールに比して非常に大
きく、特に帯板が接触するワークロールの通板部の肌あ
れが激しく、帯板側縁部と対応する部分の局部摩耗が大
きい傾向を有する。このため、帯板の圧延作業に際して
は、広幅の板材から、始めて順次狭幅の板材に移行する
ような圧延順序のスケジュール圧延を行い、定期的にロ
ールを交換して摩耗状態にあるロールを圧延機外にて研
削した後、再び圧延機に増込んで使用するようにしてい
た。<Prior art> In a hot rolling mill that rolls steel plates, etc., the wear of the work roll during rolling is much greater than that of the backup roll, and the wear of the work roll in particular is rough, especially on the threaded part of the work roll that comes into contact with the strip. There is a tendency for local wear to be large in areas corresponding to the side edges of the strip. For this reason, when rolling strips, schedule rolling is performed in which the rolling order starts from wide strips and then moves to narrow strips, and the rolls are replaced periodically to roll worn rolls. After grinding outside the machine, it was put back into the rolling mill for use.
ところが、このようなスケジュール圧延を行ってオフラ
インでロールを研削する方法では、圧延順序が制約され
るために生産能率が阻害される上、ロール交換の頻度が
高くて多大の労力を必要とし、又、設備稼動率低下の大
きな要因となっていた。そこで、圧延機にロールを組み
込んだまま圧延中にロールの研削を行い、ロール交換の
周期を延長させると共に板幅による圧延順序の制約がな
い圧延作業を可能とするオンライン研削装置の開発が進
められて来た。However, in this method of performing scheduled rolling and grinding the rolls off-line, the rolling order is restricted, which hinders production efficiency, and the rolls must be replaced frequently, requiring a great deal of labor. , which was a major factor in the decline in equipment operating rates. Therefore, progress has been made in the development of an online grinding device that grinds the rolls during rolling while the rolls are still installed in the rolling mill, thereby extending the roll replacement cycle and making it possible to perform rolling operations without restrictions on the rolling order due to strip width. I came.
このオンライン研削装置として従来知られているものは
、第４図（ａ）、鵠）に示したような型式のものがある
。つまり、第４図（ａ）に示したものは角柱ブロック状
の砥石ｌを回転中のワークロール２に押し付けて研削す
るようにしている。A conventionally known online grinding device is of the type shown in FIG. 4(a). That is, in the case shown in FIG. 4(a), a prismatic block-shaped grindstone l is pressed against a rotating work roll 2 for grinding.
又、第４図（ｂ）に示したものは、円盤状の砥石３を図
示しないモータで回転させ、これを回転中のワークロー
ルｌの表面に押し当てて研削するようにしている。In the case shown in FIG. 4(b), a disc-shaped grindstone 3 is rotated by a motor (not shown), and is pressed against the surface of a rotating work roll 1 for grinding.
〈発明が解決しようとする問題点〉
第４図（ａ）に示した角柱ブロック状の砥石ｌを用いる
ものでは、砥石ｌを回転させる必要がないので装置が簡
単である反面、砥石１が回転しないので砥石３１の目が
研削粉で詰まつｆｃり或いは焼き付い友すし易く、又、
砥石ｌが角柱状であるためにその角部が欠損して寿命が
短く、事故を誘発し易い欠点があった。<Problems to be Solved by the Invention> In the case of using the prismatic block-shaped grindstone l shown in FIG. 4(a), the apparatus is simple because there is no need to rotate the grindstone l; Since the grinding wheel 31 is not easily clogged with grinding powder, it is easy to get stuck or burnt, and
Since the grinding wheel 1 has a prismatic shape, its corners are damaged, resulting in a short service life and a drawback that accidents are likely to occur.
一方、第４図（ｂ）に示した円盤状の砥石３を用いるも
のでは、砥石３の寿命が長く研削性能も良好であるが、
砥石３を回転させねばならないことから、砥石３の回転
軸４を図示しないモータで回転させる必要がある。従っ
て、ロールの長手方向に壱つ友大きなスペースを必要と
する上、複数個の砥石３を配設した場合には隣接する砥
石３間の距離を大きく設定しなければならず、ロールの
長手方向に沿つ几全面を研削できなくなってしまう欠点
がある。On the other hand, in the case of using the disk-shaped grindstone 3 shown in FIG. 4(b), the life of the grindstone 3 is long and the grinding performance is good, but
Since the grindstone 3 must be rotated, the rotating shaft 4 of the grindstone 3 must be rotated by a motor (not shown). Therefore, in addition to requiring a large space in the longitudinal direction of the roll, when a plurality of grinding wheels 3 are arranged, the distance between adjacent grinding stones 3 must be set large, and the distance in the longitudinal direction of the roll is The disadvantage is that it is not possible to grind the entire surface along the .
本発明はかかる従来のオンライン研削装置における上述
した欠点に鑑み、簡単な構造でコストが低くしかも研削
能力の優れたオンライン研削方法を提供することを目的
とする。In view of the above-mentioned drawbacks of the conventional online grinding apparatus, it is an object of the present invention to provide an online grinding method with a simple structure, low cost, and excellent grinding ability.
く問題点を解決する九めの手段〉
本発明の回転体研削装置は、駆動回転する被研削物に回
転自在に支持された砥石を押付けて前記被研削物の外周
面を研削するに際し、前記砥石の回転軸心の延長が前記
被研削物の回転軸心と交差しないように設定すると共に
この砥石の回転軸心が前記被研削物の回転軸心と垂直な
面に対して傾斜するように設定し、前記被研削物の外周
面と前記砥石との接触点にて発生するすベジにより前記
被研削物の外周面を研削するようにし友ことを特徴とす
るものである。Ninth Means for Solving the Problems> The rotary body grinding apparatus of the present invention, when pressing a rotatably supported grindstone against the driven and rotating workpiece to grind the outer peripheral surface of the workpiece, The extension of the rotational axis of the grindstone is set so as not to intersect the rotational axis of the object to be ground, and the rotational axis of the grindstone is inclined with respect to a plane perpendicular to the rotational axis of the object to be ground. The present invention is characterized in that the outer circumferential surface of the object to be ground is ground by a grinding edge generated at a contact point between the outer circumferential surface of the object to be ground and the grinding wheel.
く作用〉
砥石はその回転軸心が被研削物の回転軸心に対してオフ
セットしている上に傾斜状態となっているため、駆動回
転する被研削物の外周面との間にすべり摩擦が発生し、
このすべり摩擦により被研削物の外周面が自動的に研削
されて行く。Effect> Since the rotation axis of the grindstone is offset from the rotation axis of the workpiece to be ground and is also inclined, sliding friction occurs between the grinding wheel and the outer circumferential surface of the workpiece being driven and rotated. occurs,
This sliding friction automatically grinds the outer peripheral surface of the object to be ground.
〈実施例〉
本発明による回転体研削方法を圧延ロールに応用し九−
実施例の作業概念を表す第１図（ａ）及びそのＢ−Ｂ矢
視断面構造を表す第１図（ｂ）及び第１図（ａ）の平面
形状を表す第２図に示すように、圧延ロール１１の外周
面に押付けられる砥石１２は、本実施例では円筒状をな
しており、その回転軸１３を中心に回転自在に図示しな
い支持部材に対して支持されている。砥石１２の回転軸
心Ｃは、圧延ロール１１の回転軸心Ｃに対してａだけオ
フセットしており、回転軸心Ｃの延長が回転軸心Ｃと交
差しないようになっている。<Example> The rotary body grinding method according to the present invention is applied to a rolling roll.
As shown in FIG. 1(a) showing the working concept of the example, FIG. 1(b) showing the sectional structure taken along the line B-B, and FIG. 2 showing the planar shape of FIG. 1(a), The grindstone 12 pressed against the outer circumferential surface of the rolling roll 11 has a cylindrical shape in this embodiment, and is rotatably supported on a support member (not shown) about its rotation shaft 13 . The rotational axis C of the grindstone 12 is offset by a with respect to the rotational axis C of the rolling roll 11, so that the extension of the rotational axis C does not intersect with the rotational axis C.
又、砥石１２の回転軸心Ｃは圧延ロール１１の回転軸心
Ｃと垂直な面（線）ｐに対してαだけ傾斜しており、従
って圧延ロール１１の外周面と砥石１２との接触点Ｓは
、回転軸心Ｃを通ると共に回転軸心Ｃと平行な線りに対
して角度θだけずれた位置となる。Further, the rotational axis C of the grinding wheel 12 is inclined by α with respect to a plane (line) p perpendicular to the rotational axis C of the rolling roll 11, so that the contact point between the outer peripheral surface of the rolling roll 11 and the grinding wheel 12 is S is a position that passes through the rotational axis C and is shifted by an angle θ with respect to a line parallel to the rotational axis C.
従って、本実施例による砥石１２の回転原理を表す第３
図に示すように、圧延ロール１１をＶＲの周速で駆動回
転させると、砥石１２の回転速度をＶＧとすると、
ＶＧ ＝ ＶＨ・ｃｏｓθ
で砥石１２は回転する。この時、接触点Ｓにおける回転
軸心Ｃ方向分力をＶ３とすると、圧延ロール１１と砥石
１２との間にはＶＢなるすべりが発生するが、
ＶＢ ＝ ＶＲＳｓｉｎθ
となり、支持部材によるｖｓ力方向の砥石１２の変位が
阻止される結果、このすべりに対応した摩擦力で圧延ロ
ール１１の外周面が研削される。Therefore, the third
As shown in the figure, when the rolling roll 11 is driven to rotate at a circumferential speed of VR, the grindstone 12 rotates at VG=VH·cosθ, where VG is the rotational speed of the grindstone 12. At this time, if the component force in the direction of the rotation axis C at the contact point S is V3, a slip of VB occurs between the rolling roll 11 and the grindstone 12, but VB = VRSsinθ, and the force direction due to the support member is As a result of the displacement of the grindstone 12 being prevented, the outer circumferential surface of the rolling roll 11 is ground by the frictional force corresponding to this sliding.
この場合、砥石１２の研削能率や目詰りの程度等からθ
が最適値となるように砥石１２の傾き角α及びオフセッ
ト量ａを調整すれば良い。In this case, θ
The inclination angle α and the offset amount a of the grindstone 12 may be adjusted so that the values are the optimum values.
なお、本実施例で惇圧延機の圧延ロールを研削する場合
について説明したが、その他の回転体の外周面の研削に
広く応用でさることは自然である。Although this embodiment describes the case of grinding a rolling roll of a continuous rolling mill, it is natural that the present invention can be widely applied to grinding the outer circumferential surface of other rotating bodies.
く発明の効果〉
本発明の回転体研削方法によると、回転体に対して砥石
を傾斜させつつオフセットしてこれらの間にすべり摩擦
を発生させ、このすべり摩擦により回転体の外周面を研
削するようにしたので、特別な砥石駆動源が全く不要と
なり、設備コストの低減と省スペース化とを企図するこ
とが可能となった０Effects of the Invention> According to the method for grinding a rotating body of the present invention, the grindstone is tilted and offset with respect to the rotating body to generate sliding friction between them, and the outer circumferential surface of the rotating body is ground by this sliding friction. This eliminates the need for a special grinding wheel drive source, making it possible to reduce equipment costs and save space.
第１図（ａ）は本発明による回転体研削方法の一実施例
の作業状態を表す作業概念図、第１図（ｂ）はそのＢ−
Ｂ矢視断面図、第２図は第１図（ａ）の平面図、第３図
はその研削原理を表す作業原理図、第４図（ａ） 、
（ｂ）は従来の圧延ロール研削方法をそれぞれ表す作業
概念図である。
又、図中の符号で
１１は圧延ロール、
１２は砥石、
Ｃは砥石の回転軸心、
Ｃは圧延ロールの回転軸心、
ａはオフセット量、
αは傾斜角、
ｐは圧延ロールの回転軸心に対して垂直な面
Ｓは圧延ロールと砥石との接触点、
θは接触角である。FIG. 1(a) is a conceptual diagram of the working state of one embodiment of the rotary body grinding method according to the present invention, and FIG. 1(b) is the B-
Fig. 2 is a plan view of Fig. 1 (a), Fig. 3 is a working principle diagram showing the grinding principle, Fig. 4 (a),
(b) is a conceptual diagram of a conventional rolling roll grinding method. Also, in the figures, 11 is the rolling roll, 12 is the grindstone, C is the rotational axis of the grindstone, C is the rotational axis of the rolling roll, a is the offset amount, α is the inclination angle, and p is the rotational axis of the rolling roll. The plane S perpendicular to the center is the contact point between the rolling roll and the grindstone, and θ is the contact angle.
Claims (1)
付けて前記被研削物の外周面を研削するに際し、前記砥
石の回転軸心の延長が前記被研削物の回転軸心と交差し
ないように設定すると共にこの砥石の回転軸心が前記被
研削物の回転軸心と垂直な面に対して傾斜するように設
定し、前記被研削物の外周面と前記砥石との接触点にて
発生するすべりにより前記被研削物の外周面を研削する
ようにしたことを特徴とする回転体研削方法。When pressing a rotatably supported grindstone against a drive-rotating workpiece to grind the outer peripheral surface of the workpiece, the extension of the rotational axis of the grindstone does not intersect with the rotational axis of the workpiece. and the rotational axis of this grindstone is set to be inclined with respect to a plane perpendicular to the rotational axis of the object to be ground, and the grindstone occurs at the point of contact between the outer peripheral surface of the object to be ground and the grindstone. A method for grinding a rotary body, characterized in that the outer circumferential surface of the object to be ground is ground by sliding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27357884A JPS61154706A (en) | 1984-12-27 | 1984-12-27 | Grinding method of rotating body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27357884A JPS61154706A (en) | 1984-12-27 | 1984-12-27 | Grinding method of rotating body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61154706A true JPS61154706A (en) | 1986-07-14 |
| JPH0532126B2 JPH0532126B2 (en) | 1993-05-14 |
Family
ID=17529749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27357884A Granted JPS61154706A (en) | 1984-12-27 | 1984-12-27 | Grinding method of rotating body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61154706A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0344610A2 (en) * | 1988-05-28 | 1989-12-06 | Noritake Co., Limited | Grinding wheel having high impact resistance, for grinding rolls as installed in place |
| CN106734217A (en) * | 2016-11-22 | 2017-05-31 | 首钢京唐钢铁联合有限责任公司 | A kind of corrosion preventing device for being applied to roll support shoulder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937036A (en) * | 1982-08-20 | 1984-02-29 | Sakae Riken Kogyo Kk | Cylinder polishing apparatus |
-
1984
- 1984-12-27 JP JP27357884A patent/JPS61154706A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937036A (en) * | 1982-08-20 | 1984-02-29 | Sakae Riken Kogyo Kk | Cylinder polishing apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0344610A2 (en) * | 1988-05-28 | 1989-12-06 | Noritake Co., Limited | Grinding wheel having high impact resistance, for grinding rolls as installed in place |
| US4989375A (en) * | 1988-05-28 | 1991-02-05 | Noritake Co., Limited | Grinding wheel having high impact resistance, for grinding rolls as installed in place |
| CN106734217A (en) * | 2016-11-22 | 2017-05-31 | 首钢京唐钢铁联合有限责任公司 | A kind of corrosion preventing device for being applied to roll support shoulder |
| CN106734217B (en) * | 2016-11-22 | 2019-04-12 | 首钢京唐钢铁联合有限责任公司 | A kind of corrosion preventing device applied to roll support shoulder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0532126B2 (en) | 1993-05-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |