JPH0624695B2 - Grinding wheel correction device - Google Patents
Grinding wheel correction deviceInfo
- Publication number
- JPH0624695B2 JPH0624695B2 JP60245460A JP24546085A JPH0624695B2 JP H0624695 B2 JPH0624695 B2 JP H0624695B2 JP 60245460 A JP60245460 A JP 60245460A JP 24546085 A JP24546085 A JP 24546085A JP H0624695 B2 JPH0624695 B2 JP H0624695B2
- Authority
- JP
- Japan
- Prior art keywords
- grindstone
- surface roughness
- grinding wheel
- correction
- speed
- 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
Landscapes
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、研削盤の砥石修正装置に関するものである。The present invention relates to a grindstone correcting device for a grinder.
［従来技術］ 砥石を用いてワークの内面研削等の表面加工を行なう研
削盤では、砥石の切れ味を確保するため、ドレスダイヤ
等の修正工具を用いて砥石の表面をドレスするようにし
ている。[Prior Art] In a grinder that performs surface processing such as inner surface grinding of a workpiece using a grindstone, in order to secure the sharpness of the grindstone, a dressing tool such as a dress diamond is used to dress the surface of the grindstone.
従来、この種の砥石修正装置として、砥石径を検出し、
砥石径に応じてドレス速度、即ち修正速度を制御するよ
うにした研削盤の砥石修正装置が提案されている（特公
昭５６−７８２５号公報、特開昭５６−１５７９５１号
公報参照）。かかる砥石の修正は、いうまでもなく砥石
の切れ味を確保してワークの加工面粗さを要求値以下に
管理することを目的として行うものであるが、ワークの
表面粗さに影響を及ぼす要因は種々であり、しかも相互
に関連している。Conventionally, this type of grindstone correction device detects the grindstone diameter,
A whetstone correcting device for a grinding machine has been proposed in which the dressing speed, that is, the correction speed is controlled according to the whetstone diameter (see Japanese Patent Publication No. 56-7825 and Japanese Patent Publication No. 56-157951). Needless to say, the correction of such a grindstone is performed for the purpose of ensuring the sharpness of the grindstone and controlling the processed surface roughness of the work below the required value. Are various and interrelated.
かかる観点から、ワークの加工面の表面粗さを測定し、
表面粗さに応じて加工速度を制御するようにしたもの
（特開昭５８−２０２７７０号公報参照）や、ポストゲ
ージによる加工速度のフィードバック制御方式（特開昭
５５−４２１５５号公報参照）等が提案されているが、
例えば、加工速度を制御するのみでは、砥石の切れ味の
変化、或いは砥石径やドレス状態等に完全には対処でき
ず、必ずしも表面粗さを一定に管理することはできな
い。From this viewpoint, the surface roughness of the machined surface of the workpiece is measured,
The one in which the processing speed is controlled according to the surface roughness (see JP-A-58-202770), the feedback control method of the processing speed by the post gauge (see JP-A-55-42155), and the like. Has been proposed,
For example, only by controlling the processing speed, it is not possible to completely deal with the change in the sharpness of the grindstone, the grindstone diameter, the dressing state, and the like, and it is not always possible to constantly control the surface roughness.
［発明の目的］ 本発明の目的は、ワークの加工面の表面粗さに関与する
種々の要因を考慮して砥石に対する修正速度を制御する
ことにより、表面粗さを所望の値に管理することであ
る。[Object of the Invention] An object of the present invention is to control the surface roughness to a desired value by controlling the correction speed for the grindstone in consideration of various factors related to the surface roughness of the work surface of the work. Is.
［発明の構成］ このため、本発明は、研削砥石の修正を行なう装置であ
って、砥石幅方向に修正工具を相対移動させて砥石を修
正する砥石修正装置と、修正工具の交換までのワークの
加工数と、砥石交換の有無と、修正工具交換の有無を入
力情報とし、上記ワークの加工数に比例する修正工具の
摩耗量と砥石の修正に伴なう砥石径の減少量とを算定
し、これら修正工具の摩耗量および、砥石径の減少量に
よるワーク表面粗さの増加分並びに砥石交換による砥石
径の回復によるワーク表面粗さの低下分とから、砥石修
正速度を一定とした場合のワーク表面粗さの変化を演算
するワーク表面粗さ演算手段と、演算されたワーク表面
粗さの増大に応じて修正工具による砥石修正速度を低下
させるように砥石修正速度を制御する砥石修正速度制御
手段とを備え、ワークの表面粗さをほぼ一定にするよう
に砥石修正速度を制御するようにしたことを特徴とす
る。Therefore, the present invention is a device for correcting a grinding wheel, and is a device for correcting a grindstone by relatively moving the correction tool in the grindstone width direction, and a work until replacement of the correction tool. The number of machining, the presence / absence of grindstone replacement, and the presence / absence of modification tool replacement are used as input information, and the wear amount of the modification tool proportional to the number of machining of the above work and the reduction amount of the grinding wheel diameter due to the modification of the grindstone are calculated. However, if the grindstone correction speed is kept constant from the wear amount of these correction tools and the increase in the work surface roughness due to the decrease in the grindstone diameter, and the decrease in the work surface roughness due to the recovery of the grindstone diameter by exchanging the grindstone Work surface roughness calculating means for calculating the change in the work surface roughness, and a grindstone correction speed for controlling the grindstone correction speed so as to decrease the grindstone correction speed by the correction tool according to the increase in the calculated work surface roughness Control means And is characterized in that the grindstone correction speed is controlled so that the surface roughness of the work is made substantially constant.
［発明の効果］ 本発明によれば、修正工具の摩耗状態や砥石径の減少等
による砥石表面性状の悪化をキャンセルするように砥石
修正速度を制御するようにしたから、砥石の修正を最適
に制御することができ、この砥石の適切な修正によって
ワークの表面粗さをほぼ一定に管理することができる。[Effect of the Invention] According to the present invention, since the grindstone correction speed is controlled so as to cancel the deterioration of the grindstone surface quality due to the wear state of the correction tool, the reduction of the grindstone diameter, etc., the grindstone correction is optimized. It can be controlled, and the surface roughness of the work can be controlled to be substantially constant by proper modification of this grindstone.
［実施例］ 以下、本発明の実施例を添付の図面を参考に具体的に説
明する。EXAMPLES Examples of the present invention will be specifically described below with reference to the accompanying drawings.
第１図に示すように、研削盤はワーク１をチャック保持
する主軸２を切込送りする切込テーブル３と、砥石４を
砥石軸５で支持した加工ヘッド６と、この加工ヘッド６
を軸方向に送る砥石テーブル７と、ドレスダイヤ８によ
って砥石４をドレス（修正）するドレス装置９とを備え
ている。As shown in FIG. 1, the grinding machine includes a cutting table 3 for cutting and feeding a main shaft 2 for holding a workpiece 1, a machining head 6 for supporting a grindstone 4 on a grindstone shaft 5, and a machining head 6 for this.
And a dressing device 9 for dressing (correcting) the whetstone 4 with a dress diamond 8.
上記砥石テーブル７の駆動用モータ１０の駆動制御を通
してテーブル位置を制御するテーブル位置制御装置１１
に対して、本案では、ドレス速度演算回路１２を設け、
ドレス時には、この回路１２によって演算されたドレス
速度によって砥石テーブル７の送り速度が決定され、そ
の値に制御される。A table position control device 11 for controlling the table position through the drive control of the drive motor 10 for the grindstone table 7.
On the other hand, in the present proposal, the dress speed calculation circuit 12 is provided,
At the time of dressing, the feeding speed of the grindstone table 7 is determined by the dressing speed calculated by the circuit 12, and is controlled to that value.
このドレス速度の演算のために、まず、加工完了後のワ
ーク１′の表面粗さを検出する粗さゲージ１３を設ける
とともに、この表面粗さと、現在までのドレス回数と、
砥石交換の有無と、ドレスダイヤ８の交換の有無とを入
力情報として、粗さの変化傾向（パターン）を演算する
粗さパターン演算回路１４を設けている。In order to calculate the dressing speed, first, a roughness gauge 13 for detecting the surface roughness of the work 1'after completion of machining is provided, and the surface roughness and the number of dresses up to now are
A roughness pattern calculation circuit 14 for calculating a tendency (pattern) of change in roughness is provided with the presence / absence of grindstone replacement and the presence / absence of replacement of the dress diamond 8 as input information.
ここで、ワーク加工面の表面粗さの変化を具体的に考察
する。Here, the change of the surface roughness of the work surface will be specifically considered.
第３図（ａ）は、研削加工毎に一定のドレス速度でドレ
スを行なった場合の加工数に対する加工面の表面粗さRF
の変化を模式化して示すものである。FIG. 3 (a) shows the surface roughness R F of the machined surface against the number of machining when dressing is performed at a constant dressing speed for each grinding process.
This is a schematic representation of the change in.
第３図（ａ）に示されるように、表面粗さRFは、短，
中，長期の変動要因によって変化する。As shown in FIG. 3 (a), the surface roughness R F is short,
It changes depending on medium and long-term fluctuation factors.
短期の要因はドレスによる砥石径の減少によるもので、
砥石径が減少するにつれて所謂喰いつき現象が生じて、
表面粗さRFを徐々に増大させる。The short-term factor is the decrease in the diameter of the grindstone due to dressing,
As the grinding wheel diameter decreases, a so-called biting phenomenon occurs,
Surface roughness R F is gradually increased.
中期の要因は砥石の交換によるもので、砥石が交換され
たときには表面粗さRFは一段低下する。さらに、長期の
要因はドレスダイヤ８自体の摩耗によるもので、ドレス
ダイヤ８の摩耗が進行すると、ドレス時に砥石表面に以
上脱落と呼ばれる一種のむしれ現象が生じ、その結果、
砥石表面が荒されて、ワークの表面粗さRFを悪化させ
る。このドレスダイヤ８の摩耗は徐々に進行し、徐々で
はあるが長期にわたって表面粗さを悪化させる。そし
て、ドレスダイヤ８が交換されると、その時点で表面粗
さは大幅に改善されることになる。The factor in the middle term is due to the replacement of the grindstone, and when the grindstone is replaced, the surface roughness R F further decreases. Furthermore, the long-term factor is due to the wear of the dress diamond 8 itself. As the wear of the dress diamond 8 progresses, a kind of plucking phenomenon called detachment occurs on the surface of the grindstone during dressing, and as a result,
The surface of the grindstone is roughened and the surface roughness R F of the work is deteriorated. The wear of the dress diamond 8 gradually progresses and gradually deteriorates the surface roughness over a long period of time. Then, when the dress diamond 8 is replaced, the surface roughness will be greatly improved at that time.
これら短，中，長期の変動要因が重畳される結果、第３
図（ａ）のように、表面粗さRFが変化することになるの
である。As a result of superimposing these short, medium, and long-term fluctuation factors,
The surface roughness R F changes as shown in FIG.
したがって、逆にワーク表面粗さを一定に制御するため
には、上記短，中，長期の要因による表面粗さへの影響
を相殺するようにドレス速度を制御するようにすればよ
い。つまり、ワークの表面粗さは、基本的には、砥石の
表面性状、砥石の加工速度に影響されるが、砥石の表面
性状は、上記のように、短，中，長期の諸要因に影響さ
れるものであることから、これらの諸要因を相殺するよ
うにドレス速度を変化（低下）させるようにすればよ
い。Therefore, conversely, in order to control the surface roughness of the work to be constant, the dressing speed may be controlled so as to cancel the influence of the short, medium, and long-term factors on the surface roughness. In other words, the surface roughness of the work is basically influenced by the surface texture of the grindstone and the processing speed of the grindstone, but the surface texture of the grindstone is affected by various factors in the short, medium and long term as described above. Therefore, the dressing speed may be changed (decreased) so as to cancel these various factors.
第２図は、第３図（ａ）で説明した如き表面粗さの変化
パターンを演算して、その演算結果に基づくドレス速度
Vcの設定方式を示すフローチャートである。FIG. 2 shows the dressing speed based on the calculation result of the change pattern of the surface roughness as described in FIG. 3 (a).
7 is a flowchart showing a method of setting Vc.
まず、表面粗さの変化パターンRFを次式によって演算す
る。First, the surface roughness change pattern R F is calculated by the following equation.
RF＝α・ｎ−β・ｋ＋γ・ｎ…（１） ここで、ｎ…ドレスダイヤ交換までの加工数（ドレス
数） ｋ…ドレスダイヤ交換までの砥石交換回数 α…砥石径の減少による表面粗さへの影響係数 β…砥石交換に伴なう表面粗さの低下量 γ…ドレスダイヤの摩耗に伴なう表面粗さへの
影響係数 なお、上式において、ｎ，ｋはドレスダイヤの交換ごと
に更新される。R F = α ・ n-β ・ k + γ ・ n ... (1) Where, n ... number of machining steps before dress diamond exchange (number of dresses) k ... number of wheel exchanges before dress diamond exchange α ... surface due to decrease in wheel diameter Coefficient of influence on roughness β… Amount of decrease in surface roughness due to wheel replacement γ… Coefficient of influence on surface roughness due to wear of dress diamond In the above equation, n and k are Updated with each exchange.
次に、上式で求めた表面粗さの変化パターンRFに基づ
き、次段では、ドレス速度の初期設定値をVoとして、次
式により、現在のドレス速度Vcを演算する。Next, based on the change pattern R F of the surface roughness obtained by the above equation, in the next stage, the initial setting value of the dressing speed is set to Vo, and the current dressing speed Vc is calculated by the following equation.
Vc＝Vo（１−RF）…（２） （２）式で演算されるドレス速度は、第３図(b)に示す
通りとなり、表面粗さの変化パターンRFに対応した短，
中，長期の変動の重畳結果を相殺して砥石の表面性状を
一定に維持するように設定されることになる。Vc = Vo (1-R F ) ... (2) The dressing speed calculated by the equation (2) is as shown in FIG. 3 (b), and the dressing speed corresponding to the surface roughness change pattern R F ,
The superposition results of medium- and long-term fluctuations are canceled out so that the surface texture of the grindstone is maintained constant.
このようにして設定されたドレス速度Vcは、ドレス時前
述のテーブル位置制御装置１１に入力され、該装置１１
は、入力されたドレス速度Vcとなるように駆動モータ１
０を制御する。The dressing speed Vc set in this way is input to the table position control device 11 during dressing, and the device 11
Is the drive motor 1 so that the input dress speed Vc
Control 0.
その結果、第３図（ｃ）に示すように、ワークの加工面
の表面粗さRFは、ほぼ一定とすることができる。As a result, as shown in FIG. 3 (c), the surface roughness R F of the machined surface of the workpiece may be substantially constant.
なお、ポストゲージとして設けた粗さゲージ１３は、上
記のドレス速度の制御結果をモニターする役割を有し、
検出された表面粗さが悪化するような場合には、何らか
の異常原因が存在していることを判断することができ
る。The roughness gauge 13 provided as a post gauge has a role of monitoring the control result of the dressing speed,
When the detected surface roughness deteriorates, it can be determined that there is some cause of abnormality.
以上のように、本発明によれば、ワークの加工面の表面
粗さの短，中，長期にわたる変動要因を考慮して表面粗
さを一定に管理しうるように、ドレス速度を設定するた
め、表面粗さを好ましい一定値に維持することができ
る。As described above, according to the present invention, the dressing speed is set so that the surface roughness can be constantly controlled in consideration of the variation factors of the surface roughness of the work surface of the work over short, medium and long periods. The surface roughness can be maintained at a preferable constant value.
第１図は本発明にかかる研削盤のシステム構成図、第２
図は本発明にかかるドレス速度演算方式を示すフローチ
ャート、第３図(a),(b),(c)は夫々表面粗さの変化パタ
ーン，ドレス速度設定パターン，制御の結果として得ら
れる表面粗さを示す各グラフである。 １…ワーク、２…主軸、３…切込テーブル、４…砥石、
５…砥石軸、７…砥石テーブル、８…ドレスダイヤ、９
…ドレス装置、１１…テーブル位置制御装置、１２…ド
レス速度演算回路、１３…表面粗さゲージ、１４…粗さ
パターン演算回路。FIG. 1 is a system configuration diagram of a grinding machine according to the present invention, and FIG.
FIG. 3 is a flow chart showing a dressing speed calculation method according to the present invention, and FIGS. 3 (a), (b), and (c) are surface roughness change patterns, dressing speed setting patterns, and surface roughness obtained as a result of control, respectively. It is each graph which shows the. 1 ... Workpiece, 2 ... Spindle, 3 ... Cutting table, 4 ... Whetstone,
5 ... Grindstone axis, 7 ... Grindstone table, 8 ... Dress diamond, 9
Dressing device, 11 table position control device, 12 dressing speed calculation circuit, 13 surface roughness gauge, 14 roughness pattern calculation circuit.
Claims (1)
石幅方向に修正工具を相対移動させて砥石を修正する砥
石修正装置と、 修正工具の交換までのワークの加工数を検出する手段
と、 砥石交換の有無を検出する手段と、 修正工具交換の有無を検出する手段と、 これら手段の出力を入力情報とし、上記ワークの加工数
に比例する修正工具の摩耗量と砥石の修正に伴なう砥石
径の減少量とを算定し、これら修正工具の摩耗量およ
び、砥石径の減少量によるワーク表面粗さの増加分並び
に砥石交換による砥石径の回復によるワーク表面粗さの
低下分とから、砥石修正速度を一定とした場合のワーク
表面粗さの変化を演算するワーク表面粗さ演算手段と、 演算されたワーク表面粗さの増大に応じて修正工具によ
る砥石修正速度を低下させるように砥石修正速度を制御
する砥石修正速度制御手段とを備え、ワークの表面粗さ
をほぼ一定にするように砥石修正速度を制御するように
したことを特徴とする研削盤の砥石修正装置。1. A device for correcting a grinding wheel, which comprises a whetstone correction device for relatively moving a correction tool in the whetstone width direction to correct the whetstone, and means for detecting the number of workpieces processed until the correction tool is replaced. And a means for detecting the presence / absence of replacement of a grindstone, a means for detecting the presence / absence of replacement of a correction tool, and the output of these means as input information for correcting the wear amount of the correction tool and the grindstone in proportion to the machining number of the workpiece. The amount of reduction of the accompanying grinding wheel diameter is calculated, and the wear amount of these correction tools and the increase of the work surface roughness due to the decrease of the grinding wheel diameter and the decrease of the work surface roughness due to the recovery of the grinding wheel diameter by exchanging the grinding wheel From the above, the work surface roughness calculation means for calculating the change in the work surface roughness when the grinding wheel correction speed is constant, and the grindstone correction speed by the correction tool is reduced in accordance with the increase in the calculated work surface roughness. So And a grindstone corrected speed control means for controlling the grindstone corrected speed, grinding machine of the grinding wheel repairing apparatus being characterized in that so as to control the grindstone corrected speed to a substantially constant surface roughness of the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60245460A JPH0624695B2 (en) | 1985-10-31 | 1985-10-31 | Grinding wheel correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60245460A JPH0624695B2 (en) | 1985-10-31 | 1985-10-31 | Grinding wheel correction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62102975A JPS62102975A (en) | 1987-05-13 |
| JPH0624695B2 true JPH0624695B2 (en) | 1994-04-06 |
Family
ID=17133989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60245460A Expired - Lifetime JPH0624695B2 (en) | 1985-10-31 | 1985-10-31 | Grinding wheel correction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624695B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12497275B2 (en) | 2022-08-01 | 2025-12-16 | Omron Corporation | Apparatus for moving a payload |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6908362B2 (en) * | 2001-03-02 | 2005-06-21 | Superpower, Inc | Reel-to-reel substrate tape polishing system |
| CN108161742B (en) * | 2018-01-29 | 2024-01-02 | 苏州温特金刚石滚轮有限公司 | Digital detection system based on diamond roller finishing grinder |
| CN114952605A (en) * | 2022-06-07 | 2022-08-30 | 河南宏旺金属材料有限公司 | Stainless steel plate grinding machine and grinding method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS567825A (en) * | 1979-06-29 | 1981-01-27 | Daiei Giken Kk | Food transfer apparatus |
| JPS57173464A (en) * | 1981-04-21 | 1982-10-25 | Toyota Motor Corp | Controlling method for adaptation of condition of dress |
-
1985
- 1985-10-31 JP JP60245460A patent/JPH0624695B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12497275B2 (en) | 2022-08-01 | 2025-12-16 | Omron Corporation | Apparatus for moving a payload |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62102975A (en) | 1987-05-13 |
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