JPH0326457A - Machining unit for work piece of special form - Google Patents
Machining unit for work piece of special formInfo
- Publication number
- JPH0326457A JPH0326457A JP16122589A JP16122589A JPH0326457A JP H0326457 A JPH0326457 A JP H0326457A JP 16122589 A JP16122589 A JP 16122589A JP 16122589 A JP16122589 A JP 16122589A JP H0326457 A JPH0326457 A JP H0326457A
- Authority
- JP
- Japan
- Prior art keywords
- cam
- workpiece
- grinding
- indexing
- rotary
- 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
- 238000003754 machining Methods 0.000 title abstract description 33
- 238000000926 separation method Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 description 83
- 238000005520 cutting process Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 7
- 238000003801 milling Methods 0.000 description 6
- 239000004575 stone Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 101100008048 Caenorhabditis elegans cut-4 gene Proteins 0.000 description 1
- 235000008375 Decussocarpus nagi Nutrition 0.000 description 1
- 244000309456 Decussocarpus nagi Species 0.000 description 1
- 230000001270 agonistic effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業し、の利用分野コ
本発明はカムやバンヂブlノス用の金型等の外周を切削
したり(il+削したりするI::めの特殊形状ハ11
工機に関サる1うの゛Cある。[Detailed Description of the Invention] [Industrial field of application] The present invention is a method for cutting the outer periphery of a mold for a cam or a band nose.
There is one category related to machine tools.
[従米の技術1
従来、この種の加1機こしでは、例えば、カムの外周を
研削するためのカム研削盤が挙げられる。[Junior's Technique 1] Conventionally, this type of milling machine includes, for example, a cam grinder for grinding the outer periphery of a cam.
第′14間に示すようk:、このカム碩削弊はカムWの
外周に円形砥八8を接触させ、砥石8を回転駆動しなが
ら、カムWを微速で回転させるとともに,同hムW i
こ対して−砥石8を接近離間させ、この砥r−i出(こ
てカムWの外周をくまなく研削するようになっている。As shown in the 14th space, k:, this cam grinding is done by bringing the circular grinder 8 into contact with the outer periphery of the cam W, and rotating the cam W at a slow speed while rotating the grindstone 8. i
On the other hand, the grindstone 8 is moved closer and further apart, and the outer circumference of the iron cam W is thoroughly ground.
そして、カムWの回転角度とその接離動作とに一定の相
間関係を持たせるために、カムWと同一形状の図示しな
いマスターカムを、同じ(凪?i 81−同一径の倣い
口一ラに接触させ、この両者の相対運動を前記カムW占
砥石8に機械的に連動させている。In order to have a certain correlation between the rotation angle of the cam W and its approaching/separating operations, a master cam (not shown) having the same shape as the cam W is installed at the same (Nagi? The cam W is brought into contact with the grindstone 8, and the relative movement between the two is mechanically interlocked with the cam W and the grindstone 8.
ところが、土記したカム研削盤において、ドレッシング
によって砥EBが縮径しだ場合には、第15図k示すよ
うに、砥?i8とカムWLの位圃関係が誤差y″だけ狂
う。一方、前記倣いローラとマスターカムこの関係は変
わらないため、『現の形状にカノiWを研削することが
できなくなつ(しまう。そこで、従来のhム研削盤にお
いては、ドレッシングによって砥石8が縮径ずると、そ
れに合わせて作業占が前記倣い口−ラを径の小さい口−
ラと交換するようにしている。このため、新品の砥石8
が縮径;ノて使用不能となるまでに、作業老は幾度も倣
い口−ラの交換をしなければならず、非常に繁雑であっ
た。However, in the cam grinding machine described above, if the diameter of the abrasive EB starts to decrease due to dressing, the abrasive EB will become smaller as shown in Fig. 15k. The positional relationship between the i8 and the cam WL is distorted by the error y''.On the other hand, since this relationship between the copying roller and the master cam does not change, it becomes impossible to grind the iW into the current shape. In the conventional h-mu grinding machine, when the diameter of the grinding wheel 8 is reduced by dressing, the working machine changes the profiling hole to a hole with a smaller diameter.
I try to exchange it with La. For this reason, a new whetstone 8
The operator had to replace the profiling hole many times until it became unusable due to the diameter reduction, which was very tedious work.
そこで、カムWに対する凪石8の接#t IJI作をN
C制御し、ざらに、士記した砥石8の縮径による誤差y
″を演樟して自動補正するようにしたNC制御のカム研
削盤が提案されている。Therefore, IJI's contact #t of Nagishi 8 to Cam W is N.
Error y due to the diameter reduction of the grindstone 8 controlled by C and roughly recorded
An NC-controlled cam grinding machine has been proposed that automatically corrects the ``.
「発明が解決しようとする課題]
ところが、上記したNCカム研削邪において、完全な誤
差修正を行ない得る演算方法は未だ見出されておら−ず
、僅かではあっても砥石8の縮径による研削誤差の発生
は避けられない。従って、力L、WのJiJ[削精麻の
限界は通常の研削の場合に比較してノ)’<rり低いと
いう問題がある。``Problems to be Solved by the Invention'' However, in the above-mentioned NC cam grinding error, a calculation method that can completely correct the error has not yet been found, and even if the error is slightly reduced, the grinding by reducing the diameter of the grinding wheel 8 The occurrence of errors is unavoidable.Therefore, there is a problem that the limits of the forces L and W are lower than those of normal grinding.
ぞして、この問題(まカム研削盤に限らず、フライス等
の切削加■貝を使用して上記したような勤ffを“行な
う加]:機においても生じる問題である。Therefore, this problem occurs not only in cam grinders, but also in machines that perform the above-mentioned cutting operations using a cutting machine such as a milling cutter.
本ブt明の目的は、動作をN G ill御化するここ
により、倣い[]一ラの交換等の繁雑な作業をfiなう
必穴がない土に、極めて高い研削精度を実現する〔とが
ぐきる特殊形状加工機を捉供することにある。The purpose of this tool is to control the operation, thereby achieving extremely high grinding accuracy on soils where there are no holes necessary to perform complex operations such as copying and replacing one piece. Our goal is to provide special shape machining machines that are uniquely shaped.
[課題を解決8Yる/jめの手段]
第−の発明は、所定の割出し角度ごとにワークの姿勢を
変史する割出し手段と、前記ワークの外周を′加1二寸
るための回転加工手段と、前記ワークと同転加工手段ε
を接近離間させる接離手段と、前記接離手段による接離
方向と直交寸る方向へ、]ノークと回転加工手段との相
対的な位置を調整する位践調整手段と、前記接#l手段
による接離方向においてワヘク外周上の回転加工手段に
最b近い箇所を!JO玉点とし、前記割出し手段によっ
てワークの姿勢を変更するごとに、その加工点を前記回
転加工手段にて加工すべく、接離手段と位置調整f段と
によってワークと同転加工手段とを位置制m+′1j−
る制御手段とからなる特殊形状加工機をくの敦旨とする
ものである。[8Y/jth Means for Solving the Problem] The second invention includes an indexing means for changing the posture of a workpiece at every predetermined indexing angle, and a means for increasing the outer circumference of the workpiece by 12 inches. a rotary processing means, and a processing means ε that rotates simultaneously with the workpiece.
a position adjusting means for adjusting the relative position of the nok and the rotary processing means in a direction perpendicular to the direction of approach and separation by the approaching and separating means; The point closest to the rotary processing means on the outer periphery of the wahek in the approaching and separating direction. The JO ball point is set as a JO ball point, and each time the posture of the workpiece is changed by the indexing means, the workpiece and the rotary machining means are connected by the approaching/separating means and the position adjustment stage f so that the machining point is machined by the rotary machining means. position system m+′1j−
The purpose of this invention is to provide a special shape machining machine comprising a control means.
第二の発明は、所定の割出し角度ごとにワークの姿勢を
変更する割出し手段と、前記ワークの外周を加エするた
めの回転加工手段と、前記ワーク.!:回転加工手段と
を接近鮒間させる接離手段と、前記接離手段と直交づ“
る方向へ、ワークε回転加工手段とを相対的に往復動さ
せろtt復手段と、前記拝復手段によるワークと回転加
工手段とのt1復動k一伴って、回転加工手段にてワー
クの一側を加工すべ(、前記割出し手段によってワーク
の姿勢を変更するごεに、前記@離手段にてワークと回
転加工手段との離間距離を調整する制御手段とからなる
特殊形状加工機をその要旨とするものである,1
「作用]
第−の発明においては、制御手段は、接離手段と位置調
整手段とによってワークと回転加工手段とを位置制御し
、割出し手段によってワークの姿勢を変更するごとにワ
ークの加工点を回転加工手段にて加工する。ワークの加
工点は常に回転加工手段に最も近い箇所であるため、回
転加工手段が縮径したときには、その縮径分に応じて回
転加工手段とワークとの接離関係を補正する。A second invention provides an indexing means for changing the posture of a workpiece at every predetermined indexing angle, a rotary processing means for machining the outer periphery of the workpiece, and the workpiece. ! : A means for approaching and separating the rotary processing means, and a means for approaching and separating the rotary processing means;
The workpiece ε is relatively reciprocated in the direction of rotational processing means, and the rotational processing means rotates one side of the workpiece by the rotational processing means. The purpose of this invention is to provide a special shape machining machine comprising a control means for adjusting the separation distance between the workpiece and the rotary processing means using the @ separation means to change the posture of the workpiece using the indexing means. 1 "Operation" In the -th invention, the control means controls the position of the workpiece and the rotary processing means by the approach/separation means and the position adjustment means, and changes the posture of the workpiece by the indexing means. The machining point of the workpiece is machined by the rotary machining means each time.The machining point of the workpiece is always the closest point to the rotary machining means, so when the rotary machining means reduces its diameter, it rotates according to the diameter reduction. Correct the contact/separation relationship between the processing means and the workpiece.
第二の発明においては、制御手段は、接離手段にてワー
クと回転加工手段との離間距離を調整し、割出し手段に
よってワークの姿勢を変更するごとに、ワークと回転加
工手段との往復動に伴って回転加工手段にてワークの一
側を加工する。回転加工手段にて加工されるワークの一
側は、常に回転加工手段に最も近い箇所となるため、こ
の回転加工手段が縮径したときには、縮径分に応じて回
転加工手段とワークとのfl離関係を補正する。In the second invention, the control means adjusts the separation distance between the workpiece and the rotary processing means by the approaching/separating means, and moves the workpiece and the rotary processing means back and forth each time the posture of the workpiece is changed by the indexing means. Along with the movement, one side of the workpiece is processed by the rotary processing means. One side of the workpiece processed by the rotary processing means is always the closest part to the rotary processing means, so when the diameter of the rotary processing means is reduced, the fl between the rotary processing means and the workpiece is changed according to the diameter reduction. Correct the separation relationship.
[実施例]
以下、この発明をワークとしてのカムWの外周を研削す
るためのカム研削盤に具体化した第一実施例を第1〜6
図に従って説明する。[Example] Hereinafter, the first embodiment in which the present invention is embodied in a cam grinding machine for grinding the outer circumference of a cam W as a workpiece will be described as Nos. 1 to 6.
This will be explained according to the diagram.
第2.3.4図に示すように、研削盤のサドル1は前後
送り用モータ2によって前後動じ得るようになっており
、同サドル1上のテーブル3は位置調整手段としての左
右送り用モータ4によって左右方向へ移動し得るように
なっている。又、コラム5に支持された主軸ヘッド6は
接離手段としての切込み用モータ7にて上下動し得るよ
うになっており、同主軸ヘッド6の前端に設けられた回
転加工手段としての砥石8は、砥石駆動用モータ9にて
回転駆動されるようになっている。As shown in Fig. 2.3.4, the saddle 1 of the grinding machine can be moved back and forth by a forward and backward feed motor 2, and the table 3 on the saddle 1 is equipped with a left and right feed motor as a position adjustment means. 4 allows it to move left and right. Further, the spindle head 6 supported by the column 5 can be moved up and down by a cutting motor 7 as a contact/separation means, and a grindstone 8 as a rotary processing means provided at the front end of the spindle head 6 is adapted to be rotationally driven by a grindstone drive motor 9.
前記テーブル3上には割出し装置10が設置され、その
前面にはカム固定用のチャック10aが設けられている
。チャック10aは、割出し装置10.に内装された割
出し手段としての割出し用モータ11によって0.1゜
ごとに割出し回転するようになっている。そして、研削
時においては第1,3図に示すように、チャック10a
にカムWを固定して0.1゜ごとに割出し回転させなが
ら、それぞれの−姿勢のときにカム外周の最上側部P(
以下、加工点という〉を前記砥石8にて研削するように
なっている。An indexing device 10 is installed on the table 3, and a chuck 10a for fixing the cam is provided on the front surface of the indexing device 10. The chuck 10a has an indexing device 10. The indexing motor 11 as an indexing means installed in the holder rotates indexing every 0.1°. During grinding, as shown in FIGS. 1 and 3, the chuck 10a
While fixing the cam W and rotating it indexed in 0.1° increments, the uppermost side P of the outer periphery of the cam (
Hereinafter, the machining point is ground by the grindstone 8.
次に、本実論例のカム研削盤の電気的構成を第4図に従
って説明する。Next, the electrical configuration of the cam grinder of this practical example will be explained with reference to FIG.
カム研削盤の研削動作を制御する制御手段としての中央
演算処理装置12(以下、CPUという〉の出力側には
、前記各モータ2,4,7,9.11がそれぞれモータ
駆動回路13を介して接続されている。又、CPLI1
2の入力側には読取り装置14が接続され、同読取り装
置14はNCテープに打ち込まれた研削指令データを読
み取って、そのデータをCPLJ12に入力するように
なっている。さらに、CPU12にはランダムアクセス
メモリ1 5 (RAM) 、並びにリードオンリメモ
リ1 6 (ROM)が接続され、ROM16には読取
り装置14から入力された研削指令データに基いて前記
各モータ2.4.7,9.11をNG制御するためのプ
ログラムが記憶されている。CPU12はこのプログラ
ムに従って研削動作を行なうようになっており、前記R
AM15はCPU12が行なう処理のデータを一時的に
記憶するようになっている。Each of the motors 2, 4, 7, 9, and 11 is connected to the output side of a central processing unit 12 (hereinafter referred to as CPU) as a control means for controlling the grinding operation of the cam grinder via a motor drive circuit 13. Also, CPLI1
A reading device 14 is connected to the input side of the CPLJ 12, and the reading device 14 reads the grinding command data written on the NC tape and inputs the data to the CPLJ 12. Furthermore, a random access memory 1 5 (RAM) and a read-only memory 1 6 (ROM) are connected to the CPU 12, and the ROM 16 controls each of the motors 2.4. A program for performing NG control on 7 and 9.11 is stored. The CPU 12 performs the grinding operation according to this program, and the R
AM15 is designed to temporarily store data of processing performed by CPU12.
次に、上記したように砥石8にてカムWの外周を研削す
るための研削指令データの作成手順について説明する。Next, a procedure for creating grinding command data for grinding the outer periphery of the cam W with the grindstone 8 as described above will be explained.
上記したように割出し装置の割出し動作に応じてカムW
の姿勢は変更され、それに伴って前記加工点Pの位置も
上下方向及び左右方向に次第に移動する。このため、第
1図に示すように、それぞれの姿勢のときにカムWの加
工点Pに砥石8を接触させるためには、砥石8の上下位
置とカムWの左右位置とを適宜調整しなければならない
。そして、そのためには各割出し角度θごとに主軸ヘッ
ド6の上下位置とテーブル3の左右位置に関する研削指
令データが必要となる。As mentioned above, depending on the indexing operation of the indexing device, the cam W
The attitude of is changed, and accordingly, the position of the processing point P is also gradually moved in the vertical direction and the horizontal direction. Therefore, as shown in FIG. 1, in order to bring the grindstone 8 into contact with the processing point P of the cam W in each posture, the vertical position of the grindstone 8 and the horizontal position of the cam W must be adjusted as appropriate. Must be. To do this, grinding command data regarding the vertical position of the spindle head 6 and the horizontal position of the table 3 is required for each indexing angle θ.
本実施例のカム研削盤において、上記した研削指令デー
タは、実際のカムWの外周形状を既知の座標測定機や測
定子で測定した形状データに基いて作成される。そして
、その研削指令データの作成は自動プログラミング装置
によってなされる。In the cam grinder of this embodiment, the above-mentioned grinding command data is created based on shape data obtained by measuring the actual outer peripheral shape of the cam W using a known coordinate measuring machine or probe. The grinding command data is created by an automatic programming device.
例えば、第5図に実線で示すように、楕円状のカムWの
研削指令データΔを作戒ずる場合、自動ブ口グラミング
Ifは、予めドレッシングによって判明している砥石8
の半径「に塁いて、一点鎖線で示すJjムW (D l
i5is点位防を基準タした各割出し角度θごとに、カ
ムWの回転中心Ccに対す゛る砥7”i 8 (D囲転
中心CgのtSきy(以下、切込み高さという)と、砥
石8の回転中心C Cl l,= 31するカムWの回
転中心(7: c fJ/’E右位dx〈右を正、左を
負とする)とを演粋4゛る。For example, as shown by the solid line in FIG. 5, when adjusting the grinding command data Δ of the elliptical cam W, the automatic grinding If is determined by the grinding wheel 8 which is known in advance by dressing.
Jjmu W (D l
For each indexing angle θ with the i5is point position as a reference, the grinding angle 7”i8 (tSky of the center of rotation Cg of the cam W (hereinafter referred to as the cutting height), The rotation center of the cam W (7: cfJ/'E right position dx (the right side is positive and the left side is negative) is expressed as 4゛.
きらに、作業者が予め指定した切込条件とドレッシング
条件に従って、幽勤プログラミング装置は8割出し角度
Oごとに、砥石8をカムW k’:切込4:せるための
切込み補正値y′ (第6図に図示)をitQ ’Cl
寸るどと6に、ドレッシングを行なう間隔とドレッシン
グによる砥石8の縮径を補正4−るためのド1ノッシン
グ補正値V 11εを演砕する。第6図{上演粋によっ
て決定ざれた研削指令データ八を示す図であり、縦軸は
研削作業の進行状況を示すサイクル、横軸には前記割出
し角度θ、左右位躍X、切込みR a y ..切込み
補正埴y′ ドレツシング補正値y I+を示してい
る。Then, according to the cutting conditions and dressing conditions specified by the operator in advance, the Yuuki programming device sets the depth of cut correction value y' to make the grinding wheel 8 move to the cam W k':depth of cut 4:at every 8 indexing angles O. (illustrated in Figure 6) is itQ 'Cl
In step 6, a dressing correction value V11ε for correcting the dressing interval and the diameter reduction of the grindstone 8 due to dressing is calculated. FIG. 6 is a diagram showing the grinding command data 8 determined by the above pattern, the vertical axis is the cycle indicating the progress of the grinding work, and the horizontal axis is the indexing angle θ, horizontal movement X, and depth of cut R a y. .. The cutting correction value y' represents the dressing correction value y I+.
前記切込み補正値y′は切込み高さyに対して差し引(
べき数値であって、差し引かれた分だけ砥石8が下降し
てカムWに対する切り込みが行なわれる。又、第5図に
示すように、ドレッシング補正lm y ”はドレッシ
ングによる縮径分を補iFするためのものであり、前記
切込み補正{UV’ と周様に、切込み高さyからこの
数饋分を差し引ク,,そして、自動ブ0グラくング装置
は以klの研削指令f一タAをN cデープに打ち出づ
。尚、NCテープに打ち出される研削指令データΔとし
ては、例えば、前記砥石8を回転させるためのデータや
サドル1を前後動さぜるためのデータ等のように上記し
たデータ以外のものもあるが、それらのデータは本発明
の要旨とは直接関係がないため説明を省略する。The depth of cut correction value y' is subtracted from the depth of cut y (
The grindstone 8 is lowered by the subtracted amount to cut into the cam W. Furthermore, as shown in FIG. 5, the dressing correction lm y '' is to compensate iF for the diameter reduction due to dressing, and this number is calculated from the cutting height y in the same way as the cutting depth correction {UV'. Then, the automatic grinding device prints the following kl grinding command data A onto the NC tape.The grinding command data Δ printed on the NC tape is, for example, There are data other than the above, such as data for rotating the grindstone 8 and data for moving the saddle 1 back and forth, but these data are not directly related to the gist of the present invention. Therefore, the explanation will be omitted.
次に、上記したNCテープに基いて実行されるカム研削
盤の研削動作を第6図・に従って説明する。Next, the grinding operation of the cam grinder executed based on the above-mentioned NC tape will be explained with reference to FIG.
作業壱が図示しない操作盤を操作して、研削作業の開始
をCPU12に指令すると、CPU12は111記詩取
装同14に?T読み取られたNCテープの研削指令f一
タAに基いて各モータ2,4.7,9,11を駆動制御
し、NCテープの研削指令データAに従って研削盤を作
動させる。When Worker 1 operates an operation panel (not shown) and instructs the CPU 12 to start the grinding work, the CPU 12 changes to 111-14. The motors 2, 4, 7, 9, and 11 are driven and controlled based on the read NC tape grinding command data A, and the grinding machine is operated according to the NC tape grinding command data A.
第1.6図に実線で示すように、1サイクルにd3いて
、CPU12は前記割出し用モータ11にてυj出し角
度θを0゜としカムWを水平姿勢(原点荀謂)にずるε
ともに、その左右位置XをOμmどし−C砥?l′i8
の貞下に位置さぜる。又、C P U12は砥68の切
込み高さyを90000μmとし、同砥石8を回転さぜ
て力AWの加工点Pに接触させる。As shown by the solid line in FIG. 1.6, at d3 in one cycle, the CPU 12 uses the indexing motor 11 to set the υj indexing angle θ to 0° and shift the cam W to the horizontal position (so-called home position).
In both cases, the left and right position X is Oμm - C? l'i8
It is located under the chastity of. Further, the CPU 12 sets the cutting height y of the grindstone 68 to 90,000 μm, and rotates the grindstone 8 to bring it into contact with the processing point P of the force AW.
次に、CPU12はカムWを反時計回りに0.1゜回転
させるとともに、その左右位置Xを−30μmとしてカ
ムWを僅かに左側に移動させる。Next, the CPU 12 rotates the cam W by 0.1° counterclockwise, and moves the cam W slightly to the left by setting its left-right position X to −30 μm.
この姿勢においても、カムWの最も高い箇所である7J
I1 1−面1)は砥石8の真不となる。CPIづ12
は砥石8の切込み高さyを90010Ilmとして僅か
にLnさせ、同砥?:i8をカムWの加T点Pに接触さ
せる。以上のようにCPU12は0.1゜ごとにカムW
を反時i1回りに順次割出し回転させるとともに、その
加工点Pを常に砥石8の真下に位置させるべ(カムWを
左右に位置調整する。又、CPU12は加工点Pの上下
動に合わせて砥石8をLrに位置調整し、常にカムWの
加工点Pに砥石8を接触させる。そして、カムWが1回
転した時点で1サイクルが終了する。第6図に示すよう
に、この1サイクルにおいては切込み補正値y′が0μ
mのため研削はほとんだ行なわれない。又、ドレッシン
グを行なっていないため、ドレッシング補正値yrtも
Oμmaなっている、,2 +jイクルにおいて、CP
υ12は上記した1ザイクルと同様にカムWを反時S1
回りに1回転させる。このサイクルにおいては切込み補
正値y′が10μmのため、各割出Iノ角度θにおける
砥石8の切込み高さyはそれぞれ10μmずつ差し引か
れ、砥石8は1サイクルのεきε比較して常に10Il
m分だけ下方に位匿(ノでカムWの外周を(まなく研削
する。Even in this posture, 7J, which is the highest point of the cam W,
I1 1-surface 1) is the trueness of the grindstone 8. CPIzu12
The cutting height y of the grinding wheel 8 is set to 90010Ilm and slightly Ln, and the same grinding? : Bring i8 into contact with the addition T point P of the cam W. As mentioned above, the CPU 12 rotates the cam W every 0.1°.
The cam W should be indexed and rotated sequentially counterclockwise around i1, and the machining point P should always be positioned directly below the grinding wheel 8 (the cam W should be adjusted to the left and right. Also, the CPU 12 should adjust the position of the cam W in accordance with the vertical movement of the machining point P). The position of the grindstone 8 is adjusted to Lr, and the grindstone 8 is always brought into contact with the processing point P of the cam W.One cycle ends when the cam W makes one rotation.As shown in FIG. 6, this one cycle In this case, the depth of cut correction value y′ is 0 μ
Grinding is rarely done because of the In addition, since dressing is not performed, the dressing correction value yrt is also Oμma.In 2+j cycles, CP
υ12 is the same as the above-mentioned 1 cycle, and the cam W is reversed by S1.
Rotate around once. In this cycle, since the depth of cut correction value y' is 10 μm, the depth of cut y of the grinding wheel 8 at each index I angle θ is subtracted by 10 μm, and the grinding wheel 8 is always 10 Il compared with ε and ε in one cycle.
Grind the outer periphery of the cam W by positioning it downward by m.
以上のようにCPtJ12はサイクルを繰り返ずごとに
切込み補正値y′を10μmずつ増加させていき、同補
正値y′が200μmに達する21サイクルを終了した
時点で凪石8をドレッシングする。このドレッシングに
おいて砥石8は半径「で60μm分縮径する。As described above, the CPtJ 12 increases the cutting depth correction value y' by 10 μm each time the cycle is repeated, and when the correction value y' reaches 200 μm after completing 21 cycles, the nagishi 8 is dressed. During this dressing, the grindstone 8 is reduced in radius by 60 μm.
第6図に示すように、ドレッシング後の22サイクルに
おいてCPU12は研削を再開する。このサイクルでは
切込み補正値y′として210μmが指定ざれているた
め、21サイクルと比較して砥石8は10I.lm下降
する。又、砥石8が縮径しているため、その縮径が砥石
8の切込み量に彰ぶを与えないように補正しなければな
らない。E記したようにカムWの加工点Pは常に砥石8
の真下に位置しているため、砥石8が縮径したときには
その縮径分だけ砥石8を下降させれば完全に補正するこ
とができる。このため、22サイクルにおいては切込み
補正値y′に加えてドレッシング補正(l!Iy″とし
て60μmが指定され、砥石8をさらに60μmだけ下
降させてその縮径分を補正している。そして、次回のド
レッシングを行なうまでの間は、ここで説明した60μ
mのドレッシング補正値y″が適用されることになる。As shown in FIG. 6, the CPU 12 resumes grinding in the 22nd cycle after dressing. In this cycle, 210 μm is specified as the depth of cut correction value y', so the grinding wheel 8 is 10 I.mu.m compared to the 21st cycle. Descend lm. Furthermore, since the diameter of the grindstone 8 is reduced, correction must be made so that the reduction in diameter does not affect the depth of cut of the grindstone 8. As noted in E, the processing point P of the cam W is always at the grindstone 8.
Since the diameter of the grindstone 8 is reduced, it can be completely corrected by lowering the grindstone 8 by the amount of the diameter reduction. Therefore, in the 22nd cycle, in addition to the depth of cut correction value y', 60 μm is specified as the dressing correction (l!Iy'', and the grinding wheel 8 is further lowered by 60 μm to compensate for the diameter reduction. Until the dressing is done, use the 60μ as described here.
A dressing correction value y″ of m will be applied.
以上詳述したように、CPU12は砥石8を次第に下降
させて切込みを加えながらカムWの外周を研削するとと
もに、ドレッシングを行なった後には、それによって生
じる縮径分をドレッシング補正値y″で補正し、力lX
Wの外周を所定の形状に研削する。As detailed above, the CPU 12 grinds the outer periphery of the cam W while gradually lowering the grinding wheel 8 and adding cuts, and after dressing, corrects the resulting diameter reduction with the dressing correction value y''. and force lX
Grind the outer periphery of W into a predetermined shape.
このように、本実施例のカムW研削盤においては、カム
Wの加工点Pが常に砥石8の真下に位置するように位置
制御するため、砥石8が縮径したときには単にその縮径
分に応じて砥石8を下降させるだけで縮径分を完全に補
正することができる。In this way, in the cam W grinding machine of this embodiment, since the position of the cam W is controlled so that the processing point P of the cam W is always positioned directly below the grinding wheel 8, when the diameter of the grinding wheel 8 is reduced, the position is simply adjusted by the amount of the reduced diameter. The diameter reduction can be completely corrected simply by lowering the grindstone 8 accordingly.
このため、非常に高い研削精度を得ることができる上に
、ドレッシング補正値を容易に演算することができる。Therefore, not only can extremely high grinding accuracy be obtained, but also the dressing correction value can be easily calculated.
次に、この発明を別のカム研削盤に具体化した第二実施
例を第7〜13図に従って説明する。Next, a second embodiment in which the present invention is embodied in another cam grinder will be described with reference to FIGS. 7 to 13.
第7,8一図に示すように、本実施例の研削盤は前記第
一実施例の研削盤とほとんど同様の構戊であり、相違点
は割出し装置10を左右に往復動きせるためのアタッチ
メント21を硝削盤のテーブル3上に備えている点であ
る。又、第11図に示すように、電気的構成おいても、
アタッチメント21を駆動するための往復手段としての
往復動用モータ22が、モータ駆動回路13を介して制
御手段としてのCPU23に接続されている。As shown in FIGS. 7 and 8, the grinding machine of this embodiment has almost the same structure as the grinding machine of the first embodiment, with the difference being that the indexing device 10 is reciprocated from side to side The point is that the attachment 21 is provided on the table 3 of the grain cutting machine. Also, as shown in FIG. 11, the electrical configuration also
A reciprocating motor 22 as a reciprocating means for driving the attachment 21 is connected to a CPU 23 as a control means via a motor drive circuit 13.
そこで、アタッチメント21の構成を説明すると、第9
.10図に示すように、アタッチメント21の上面一側
には前記往復動用モータ22が取看され、その出力軸2
2aは、アタッチメント内で回転可能に支持されたプー
り24に対してベルi〜25で連結されている。プーり
24の偏心位置にはコンロツド26の一端が回転可能に
軸着され、同コンロツド26の他端は、図示しないがイ
ドレールに案内されて往復動可能なテーブル27に回動
可能に軸着されている。テーブル27の上面はアタッチ
メント21内から外方へ露出している。Therefore, to explain the configuration of the attachment 21, the ninth
.. As shown in FIG. 10, the reciprocating motor 22 is mounted on one side of the upper surface of the attachment 21, and its output shaft 2
2a is connected by a bell i to 25 to a pulley 24 rotatably supported within the attachment. One end of a connecting rod 26 is rotatably attached to an eccentric position of the pulley 24, and the other end of the connecting rod 26 is rotatably attached to a table 27, which is guided by an idle rail (not shown) and can reciprocate. ing. The upper surface of the table 27 is exposed from inside the attachment 21 to the outside.
そして、往復動用モータ22の出力軸22aが回転する
と、それに伴いベルト25を介してプーリ24が回転し
、コンロツド26をクランク運動させて第9.10図に
おいて左右方向へテーブル27を往復動させる。When the output shaft 22a of the reciprocating motor 22 rotates, the pulley 24 rotates via the belt 25, cranking the connecting rod 26 and reciprocating the table 27 in the left-right direction in FIG. 9.10.
前記ガイドレール上のテーブル27の横には力ウンタウ
ェイト28が配設され、同カウンタウェイト28もテー
ブル27と同様にガイドレールに案内されるようになっ
ている。アタッチメント21内には一対のブーり29が
回転可能に支持され、両プーり29間には連動ベルト3
0が張架されている。連動ベルト30の上側張架部30
aは連結部材31にて前記テーブル27と連結され、同
様に下側張架部30bは連結部材31にて前記カウンタ
ウェイト28と連結されている。A force counterweight 28 is disposed beside the table 27 on the guide rail, and the counterweight 28 is also guided by the guide rail like the table 27. A pair of pulleys 29 are rotatably supported within the attachment 21, and an interlocking belt 3 is connected between both pulleys 29.
0 is displayed. Upper tension section 30 of interlocking belt 30
a is connected to the table 27 by a connecting member 31, and similarly, the lower tension portion 30b is connected to the counterweight 28 by a connecting member 31.
そ・して、前記往復動用モータ22に駆動されてテーブ
ル27が往復動ずると、それと同一方向に連動ベルト3
0の上側張架部30aが往復動し、逆方向に下側張架部
30bが往復動する。そのため、カウンタウェイト28
はテープノレ27の往復動と同期し・て逆方向に同一ス
トロークで往復動ずる。テーブル27の重量とカウンタ
ウェイト28のiBffiと#3L等しく設定されてい
るため、テーブル27の{1]復Φ力によって発生づる
悄性力は、カウン今ウ−rイ1・28の往復動によって
発生づ−る慣性力(4′:よー)τ相殺される。そのた
め、このアクツチメンI−21においては、γ−ブル2
7の柱復動に伴う振動が防』Lされるようになっている
。Then, when the table 27 reciprocates by being driven by the reciprocating motor 22, the interlocking belt 3 moves in the same direction.
The upper tension section 30a of 0 reciprocates, and the lower tension section 30b reciprocates in the opposite direction. Therefore, the counterweight 28
synchronizes with the reciprocating movement of the tape groove 27 and reciprocates in the opposite direction with the same stroke. Since the weight of the table 27 and the iBffi of the counterweight 28 are set equal to #3L, the agonistic force generated by the {1] restoring force of the table 27 is caused by the reciprocating motion of the counterweight 28. The generated inertial force (4') τ is canceled out. Therefore, in this Actimen I-21, γ-Blu 2
Vibration caused by the return movement of the 7 pillars is prevented.
次に、本実施例のカム研削盤の動作を前記第実隔例のカ
ム研削盤と比較しながら説明ずる。Next, the operation of the cam grinding machine of this embodiment will be explained while comparing it with the cam grinding machine of the first embodiment.
nij記第−実施例のカム研削盤が、カムWのυ1出し
7角度Ol.:二応じ″I:則カムWの左右位備×と砥
石8の切込み高さyとを制御し、常にカム■ノの加工点
1)にfil−(イj8を接触させるようにしたのに対
し、本実施例の力l1研削盤は、カムWの割出し角度θ
に応じて凪石Bの切込み高さyのみを制御するよう{、
ニなっている。従二》で、本実施例のカム研削盤を作I
JIさせるための研削指令データは、第6図に示1第−
実施例の研削盤のため研削指令データ八から7i石位j
Qxのf一タを省いたものとなる。The cam grinding machine of Example No. 1 has a cam W of υ1 and 7 angles Ol. : 2 corresponding "I: Law The left and right position x of the cam W and the cutting height y of the grindstone 8 were controlled so that fil- (I j8) was always in contact with the machining point 1) of the cam ■. On the other hand, in the force l1 grinding machine of this embodiment, the indexing angle θ of the cam W is
In order to control only the cutting height y of Nagishi B according to {,
It's turning. The cam grinder of this example was made using
The grinding command data for JI is shown in Figure 6.
Grinding command data 8 to 7i stone position j for the grinding machine in the example
It is the same as Qx with f1ta omitted.
ぞして、第12閏に示すように実際にカムWを研削する
場合、C P tJ 2 3は前記往復動用モータ22
を同転させてカムWを左右に柱復動させるとともに、前
記切込み用モータ7にて凪石8を上下に泣訪調幣ずる。Therefore, when actually grinding the cam W as shown in the 12th leap, C P tJ 2 3 is the reciprocating motor 22
are simultaneously rotated to move the cam W back to the left and right, and the cutting motor 7 moves the calm stone 8 up and down.
カムWの加工点Pは往復動の度に一瞬だけ砥石8と接触
して研削される。さらに、CPU23は割出し用モータ
11にてカムWを0.1゜ごεに割出し回転させ、砥石
8の上下位霞を調整しながら、それぞれの姿勢のときの
カムWの加■点Pを研削ずる.CPU23は研削盤に以
上の動作を繰り返させ、カムWを1同転きせるごとに切
り込みを加えて研削を行なう1,尚、本実施例の研削盤
においては、カムWがノt右に3社複寸るごとに、同カ
ムWを0.1゜割出し回転させるように設定されている
。The processing point P of the cam W is ground by momentarily contacting the grindstone 8 every time it reciprocates. Furthermore, the CPU 23 uses the indexing motor 11 to index and rotate the cam W in increments of 0.1° ε, and while adjusting the upper and lower haze of the grinding wheel 8, the addition point P of the cam W in each posture is adjusted. Grind. The CPU 23 causes the grinding machine to repeat the above operation, and performs grinding by adding a cut each time the cam W rotates one time.In the grinding machine of this embodiment, the cam W is made by three companies on the right. The cam W is set to be indexed and rotated by 0.1° for each additional dimension.
上記したように砥石8(二研削される瞬間の加工点番よ
、前記第一実施例ε同じ(常l.:砥石8の真下に位置
することになるため、第13図に示すように、砥石8が
縮径したときにはその縮径分を{のままドレッシング補
正値y nとして適用し、その補′iIl値y17に従
って砥石8を下降させるだけで完全に縮径分を補正する
ごとができる。このI、:め、非常に高い胡削精度を得
ることができる七に、ドレッシング補正値yrLを容易
に演粋することができる。As mentioned above, the grinding wheel 8 (the machining point number at the moment of grinding is the same as the first embodiment ε (always l.: it is located directly below the grinding wheel 8, so as shown in FIG. 13, When the diameter of the grinding wheel 8 is reduced, the diameter reduction can be completely corrected by simply applying the reduced diameter as the dressing correction value y n and lowering the grinding wheel 8 according to the supplementary value y17. Second, the dressing correction value yrL can be easily calculated.
尚、nfI記第−及び第二実施例は本発明をカム研削盤
に具体化したものであったが、研削対象物はカムWで’
CK クてちよいしその形状も限定されない。In addition, although the present invention was embodied in a cam grinder in the nfI No. 1 and 2 embodiments, the object to be ground was a cam W.
CK It is easy to use and its shape is not limited.
従って、例えば、パンチプレスに使用づる各種形状の金
型を研削するための研削盤に貝休化してもよい。Therefore, for example, it may be used as a grinder for grinding molds of various shapes used in punch presses.
又、加−I 11に関しても硯石8に限定ざれることは
なく、円状をむし咄転しながらワークを加工する回転加
工貝′Cあれば切削用のFJfl I貝であってもよい
,2例えば、フライスでカムWを削り出す加工機に具体
化しLX場合、フライスが摩耗して再研磨したときには
フライスの径が小さ<なって補正を要するが、この場合
′C″もフライスの縮径分だけ補正を行なうだ(ナでよ
い。Further, the machining tool 11 is not limited to the inkstone stone 8, and may be a rotary machining shell for machining a work while rolling a circular shape, or an FJfl I shell for cutting. For example, if the LX is implemented as a processing machine that cuts out the cam W with a milling cutter, when the milling cutter wears out and is reground, the diameter of the milling cutter becomes smaller and requires correction. In this case, 'C'' is also the diameter reduction of the milling cutter. (No is fine.)
さらに、曲記第一及び第二実施例のカム研削盤において
(よ、砥石8の前後幅に対してカムWの餉後輻が秋い場
含の胡削を説明したが、逆にカムWの前後幅の方が広い
ときにおいても、研削時にサドル1を前後動ざせること
により、砥石8に対してカムWを前後動させて、同カム
Wの外周全体を研削づることができる。又、このように
砥石8に対してカムWを前後動ざぜているときに、凪石
8の上下位置を変更すれば、三次元的な研削面を得るこ
ともできる。Furthermore, in the cam grinding machines of the first and second embodiments, we have explained the grinding process in which the rear radius of the cam W is small relative to the front and rear width of the grinding wheel 8, but conversely, the cam W Even when the longitudinal width of the cam W is wider, by moving the saddle 1 back and forth during grinding, the cam W can be moved back and forth with respect to the grindstone 8, and the entire outer circumference of the cam W can be ground. When the cam W is moved back and forth with respect to the grindstone 8 in this manner, by changing the vertical position of the calm stone 8, a three-dimensional grinding surface can be obtained.
F発明の効果]
以上詳述したように、本発明の特殊形状加工機によれば
、動作をNC制御化することにより、倣い[[一ラの交
換等の繁雑な作業をriなう必要がない上に、極めて高
い研削精度を実現することができるという優れた効果を
秦づる。[Effects of the Invention] As detailed above, according to the special shape processing machine of the present invention, by controlling the operation by NC, there is no need to perform complex operations such as copying [[one-by-one replacement]. Moreover, it has the excellent effect of being able to achieve extremely high grinding accuracy.
弟1図から第6図は本発明を具体化しノだ第一実施例を
示し、第1図Gよ研削時におけるカムとN{石の動きを
示す説明図、第2図はカム胡削盤の正而図、第3図は同
じく側面図、第4図は電気的構成を示すブロック図、第
5図は各設定値の関係を説明するための説明図、第6図
はC P tJがpiした研削指令データを示す説明図
、第7〜13図は本発明を具体化した第二実施例を示し
、第7図は研削盤の正面図、第8図は同じく側面図、第
9図はアタッチメントの概略を示す概略正断面図、第1
0図は同じく概略平断面図、第11図は電気的構成を示
すブロック図、第12図は研削時におけるカムと砥石の
動きを示す説明図、第13図は各設定値の関係を説明す
るための説明図、第14図は従来のカム研削盤における
研削時のカムと砥石の動きを示す説明図、第15図は第
14図の部分拡大図である。
4は位面調整手段としての左右送り用モータ、7は接離
手段としての切込み用モータ、8は回転加工手段として
の峨石、11は割出し手段としての割出し用モータ、1
2.23は制御手段としてのCPU、22は往復手段と
しての往復動用モータ、Wはワークとしてのカム、θは
割出し角度。Figures 1 to 6 show a first embodiment embodying the present invention, Figure 1 G is an explanatory diagram showing the movement of the cam and the stone during grinding, and Figure 2 is a cam grinding machine. FIG. 3 is a side view, FIG. 4 is a block diagram showing the electrical configuration, FIG. 7 to 13 show a second embodiment of the present invention, FIG. 7 is a front view of the grinding machine, FIG. 8 is a side view, and FIG. is a schematic front sectional view showing the outline of the attachment, the first
Figure 0 is a schematic plan cross-sectional view, Figure 11 is a block diagram showing the electrical configuration, Figure 12 is an explanatory diagram showing the movement of the cam and grindstone during grinding, and Figure 13 explains the relationship between each set value. FIG. 14 is an explanatory diagram showing the movement of a cam and a grindstone during grinding in a conventional cam grinder, and FIG. 15 is a partially enlarged view of FIG. 14. 4 is a left and right feed motor as a position adjustment means, 7 is a cutting motor as a contact/separation means, 8 is an amulet as a rotary processing means, 11 is an indexing motor as an indexing means, 1
2.23 is a CPU as a control means, 22 is a reciprocating motor as a reciprocating means, W is a cam as a workpiece, and θ is an indexing angle.
Claims (1)
を変更する割出し手段(11)と、 前記ワーク(W)の外周を加工するための回転加工手段
(8)と、 前記ワーク(W)と回転加工手段(8)とを接近離間さ
せる接離手段(7)と、 前記接離手段(7)による接離方向と直交する方向へ、
ワーク(W)と回転加工手段(8)との相対的な位置を
調整する位置調整手段(4)と、前記接離手段(7)に
よる接離方向においてワーク外周上の回転加工手段(8
)に最も近い箇所を加工点(P)とし、前記割出し手段
(11)によってワーク(W)の姿勢を変更するごとに
、その加工点(P)を前記回転加工手段にて加工すべく
、接離手段(7)と位置調整手段(4)とによってワー
ク(W)と回転加工手段(8)とを位置制御する制御手
段(12)と からなる特殊形状加工機。 2、所定の割出し角度(θ)ごとにワーク(W)の姿勢
を変更する割出し手段(11)と、 前記ワーク(W)の外周を加工するための回転加工手段
(8)と、 前記ワーク(W)と回転加工手段(8)とを接近離間さ
せる接離手段(7)と、 前記接離手段(7)と直交する方向へ、ワーク(W)と
回転加工手段(8)とを相対的に往復動させる往復手段
(22)と、 前記往復手段(22)によるワーク(W)と回転加工手
段(8)との往復動に伴つて、回転加工手段(8)にて
ワーク(W)の一側を加工すべく、前記割出し手段(1
1)によってワーク(W)の姿勢を変更するごとに、前
記接離手段(7)にてワーク(W)と回転加工手段(8
)との離間距離を調整する制御手段(23)と からなる特殊形状加工機。[Claims] 1. Indexing means (11) for changing the posture of the workpiece (W) at every predetermined indexing angle (θ), and rotation processing means for processing the outer periphery of the workpiece (W). (8); approaching and separating means (7) for approaching and separating the workpiece (W) and the rotary processing means (8); and a direction perpendicular to the approaching and separating direction by the approaching and separating means (7);
a position adjustment means (4) for adjusting the relative position between the workpiece (W) and the rotational processing means (8); and a rotational processing means (8) on the outer periphery of the workpiece in the approaching/separating direction by the approaching/separating means (7).
) is set as a processing point (P), and each time the posture of the workpiece (W) is changed by the indexing means (11), the processing point (P) is processed by the rotary processing means, A special shape processing machine comprising a control means (12) that controls the position of a workpiece (W) and a rotary processing means (8) using a contact/separation means (7) and a position adjustment means (4). 2. an indexing means (11) for changing the posture of the workpiece (W) at every predetermined indexing angle (θ); a rotary processing means (8) for processing the outer periphery of the workpiece (W); A contacting/separating means (7) for moving the workpiece (W) and the rotary processing means (8) toward and away from each other; A reciprocating means (22) that relatively reciprocates, and as the reciprocating means (22) reciprocates the workpiece (W) and the rotary processing means (8), the rotary processing means (8) rotates the workpiece (W). ) in order to process one side of said indexing means (1
Each time the posture of the workpiece (W) is changed by step 1), the workpiece (W) and the rotary processing means (8) are moved by the contact/separation means (7).
) and a control means (23) for adjusting the separation distance between the special shape processing machine and the special shape processing machine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16122589A JP2899677B2 (en) | 1989-06-23 | 1989-06-23 | Special shape processing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16122589A JP2899677B2 (en) | 1989-06-23 | 1989-06-23 | Special shape processing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0326457A true JPH0326457A (en) | 1991-02-05 |
JP2899677B2 JP2899677B2 (en) | 1999-06-02 |
Family
ID=15731007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16122589A Expired - Fee Related JP2899677B2 (en) | 1989-06-23 | 1989-06-23 | Special shape processing machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2899677B2 (en) |
-
1989
- 1989-06-23 JP JP16122589A patent/JP2899677B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2899677B2 (en) | 1999-06-02 |
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