JPH0438535B2 - - Google Patents
Info
- Publication number
- JPH0438535B2 JPH0438535B2 JP62187787A JP18778787A JPH0438535B2 JP H0438535 B2 JPH0438535 B2 JP H0438535B2 JP 62187787 A JP62187787 A JP 62187787A JP 18778787 A JP18778787 A JP 18778787A JP H0438535 B2 JPH0438535 B2 JP H0438535B2
- Authority
- JP
- Japan
- Prior art keywords
- grinding wheel
- wire electrode
- discharge machining
- forming
- electrical discharge
- 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
- 238000003754 machining Methods 0.000 claims description 32
- 238000009760 electrical discharge machining Methods 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 11
- 238000004804 winding Methods 0.000 description 10
- 239000006061 abrasive grain Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000012811 non-conductive material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/001—Devices or means for dressing or conditioning abrasive surfaces involving the use of electric current
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は放電加工により工作機械に使用する研
削砥石を成形する装置に関するものであり、特に
研削砥石の成形工具として、走行するワイヤ電極
を用いて、研削砥石とそのワイヤ電極との間で放
電加工を行い研削砥石を成形するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for forming a grinding wheel used in a machine tool by electric discharge machining, and in particular, a device for forming a grinding wheel used in a machine tool using a running wire electrode as a forming tool for the grinding wheel. Then, electrical discharge machining is performed between the grinding wheel and its wire electrode to form the grinding wheel.
NC工作機械に研削砥石を取付けて研削加工を
する装置は特開昭60−48257において公知である。
そのNC工作機械に使用する研削砥石の成形方法
及び装置として、研削砥石を回転させてシングル
ポイントのダイヤモンド工具を接触させて接触す
る方法や装置は公知である。また、別に研削砥石
を共ずりして成形する方法や装置も公知である。
これらの方法で研削砥石を成形する場合、砥粒の
結合材である砥石ボンドが軟いものは問題ない
が、例えば、メタルボンドや鋳鉄ボンドのダイヤ
モンド砥石のように砥石ボンドが硬く砥粒の保持
力が強い研削砥石を従来の方法で成形すると砥粒
を損壊し、また目詰まりが起き、研削砥石の研削
性能が悪化するという不具合がある。
A device for performing grinding by attaching a grinding wheel to an NC machine tool is known in Japanese Patent Laid-Open No. 60-48257.
As a method and apparatus for forming a grinding wheel used in the NC machine tool, a method and apparatus in which the grinding wheel is rotated and brought into contact with a single point diamond tool are known. In addition, methods and devices for molding by grinding together grinding wheels are also known.
When forming a grinding wheel using these methods, there is no problem if the grinding wheel bond, which is the binding material for the abrasive grains, is soft, but for example, if the grinding wheel bond is hard, such as a diamond grinding wheel with metal bond or cast iron bond, it may be difficult to retain the abrasive grains. If a strong grinding wheel is formed using the conventional method, the abrasive grains will be damaged, clogging will occur, and the grinding performance of the grinding wheel will deteriorate.
そこで本出願人は特願昭61−15845号により、
斯る問題点の解決を図るべく、ワイヤ電極を用い
て、研削砥石とそのワイヤ電極との間で放電加工
を行わせ、研削砥石を成形する方法と装置を開示
している。 Therefore, the applicant has filed a patent application No. 61-15845.
In order to solve this problem, a method and apparatus for forming a grinding wheel by performing electric discharge machining between the grinding wheel and the wire electrode using a wire electrode are disclosed.
然しながら、NC工作機械の主軸に装着した研
削砥石に放電加工用電源を給電する一つの方法と
して、回転する給電ブラシを研削砥石に接触させ
て給電しているが、長時間使用しているとその給
電ブラシが摩耗したり、また、研削砥石の直径が
小さい場合はその給電ブラシを接触させにくい等
の不具合があつた。
However, one method of supplying power for electrical discharge machining to the grinding wheel attached to the main spindle of an NC machine tool is to bring a rotating power supply brush into contact with the grinding wheel, but this may cause damage if used for a long time. There were problems such as the power supply brush being worn out, and if the diameter of the grinding wheel was small, it was difficult to bring the power supply brush into contact with the grinding wheel.
依つて本発明は、このような不具合を改良する
とともにワイヤ電極への給電も一層確実に行なえ
得るように改良した研削砥石の成形装置を提供す
るものである。 SUMMARY OF THE INVENTION Accordingly, the present invention provides an improved grinding wheel forming apparatus which can solve these problems and also make it possible to more reliably supply power to the wire electrodes.
本発明は、研削砥石に給電する方法として、そ
の研削砥石の保持部特に工具シヤンク部に導電性
材料で形成した給電子を押圧接触させて給電する
とともにワイヤ電極にも同様に導電性材料で形成
した給電子を接触させて給電し、研削砥石とワイ
ヤ電極との間で放電加工を行わせて研削砥石を形
成するようにしたものである。
The present invention provides a method for supplying power to a grinding wheel by pressing and contacting a feeder made of a conductive material with a holding part, particularly a tool shank part, of the grinding wheel, and also with a wire electrode made of a conductive material. The grinding wheel is formed by electrical discharge machining between the grinding wheel and the wire electrode by contacting the wire electrode with the wire electrode.
詳しくは本発明は、ワイヤ電極を用いて放電加
工により研削砥石の形状を成形する装置におい
て、NC工作機械の主軸と絶縁して装着され、回
転軸線と同軸に形成された円形状の保持部を有す
る研削砥石と、導電性材料で形成した給電子を前
記回転する研削砥石の保持部に接触させて研削砥
石に給電する砥石給電装置と、外周が円形状で回
転自在に軸承され、その外周に180度を越える角
度範囲に亘つてワイヤ電極を巻架し、放電加工部
におけるワイヤ電極を走行させながら支持するガ
イド溝を有するワイヤ電極ガイドと、前記ワイヤ
電極ガイドに支持され、繰り出し巻き取り機構に
より走行されるワイヤ電極と、導電性材料で形成
した給電子を前記走行するワイヤ電極に接触させ
てワイヤ電極に給電するワイヤ電極給電装置と、
放電加工部に加工液を供給する加工液供給装置
と、前記研削砥石と前記180度を越える角度範囲
における前記ワイヤ電極との間で放電加工を行わ
せる放電加工用電源装置とを具備して構成された
ことを特徴とする研削砥石の成形装置を提供す
る。 Specifically, the present invention provides an apparatus for forming the shape of a grinding wheel by electric discharge machining using wire electrodes, which includes a circular holding part that is installed insulated from the main shaft of an NC machine tool and formed coaxially with the axis of rotation. a grinding wheel having a grinding wheel; a grinding wheel power supply device that supplies power to the grinding wheel by bringing a feeder formed of a conductive material into contact with a holding portion of the rotating grinding wheel; A wire electrode guide has a guide groove for winding a wire electrode over an angular range exceeding 180 degrees and supporting the wire electrode while traveling in the electrical discharge machining section, and a wire electrode guide supported by the wire electrode guide and a feeding and winding mechanism. a wire electrode that is running; and a wire electrode power supply device that supplies power to the wire electrode by bringing a feeder made of a conductive material into contact with the running wire electrode;
A machining fluid supply device that supplies machining fluid to an electrical discharge machining section, and a power supply device for electrical discharge machining that performs electrical discharge machining between the grinding wheel and the wire electrode in the angle range exceeding 180 degrees. To provide a grinding wheel forming device characterized by:
上記装置では、NC工作機械の主軸に研削砥石
を装着したまま、その研削砥石の保持部に給電子
を接触させ研削砥石に給電し、ワイヤ電極には溝
付ローラ形の給電子にワイヤ電極を接触させて給
電し、研削砥石とワイヤ電極との放電加工部に加
工液を供給しながらNC工作機械のNC装置によ
り、研削砥石とワイヤ電極とを相対的に移動させ
て両者間に放電加工を行わせ、研削砥石の形状を
成形するものである。
In the above device, power is supplied to the grinding wheel by contacting the grinding wheel with the holding part of the grinding wheel while the grinding wheel is attached to the main shaft of the NC machine tool, and the wire electrode is connected to the wire electrode in the form of a grooved roller. The grinding wheel and the wire electrode are connected to each other and electrical power is supplied, and the grinding wheel and the wire electrode are moved relative to each other by the NC device of the NC machine tool while supplying machining fluid to the electrical discharge machining section between the grinding wheel and the wire electrode, and electrical discharge machining is performed between the two. This process is used to form the shape of the grinding wheel.
上記の放電加工の領域がワイヤ電極ガイドの
180度を越える角度範囲に亘るため、研削砥石の
外周面のみならず端面をも容易に加工、成形する
ことができる。更には、ワイヤ電極の放電加工領
域はワイヤ電極ガイドによつてガイドされている
ためふらつきを生ずることがない。 The area of electrical discharge machining mentioned above is the wire electrode guide.
Since the angle range exceeds 180 degrees, it is possible to easily process and shape not only the outer peripheral surface of the grinding wheel but also the end surface. Furthermore, since the electrical discharge machining area of the wire electrode is guided by the wire electrode guide, no wobbling occurs.
以下本発明を添付図面に示す実施例に基づいて
詳細に説明する。第１図は本発明装置の正面断面
図、第２図は第１図の矢視線−の平面断面
図、第３図は加工液噴射ノズル部の第１図の矢視
線−の部分断面図、第４図は本発明装置を
NC工作機械に取付けた状態の斜視図である。
The present invention will be described in detail below based on embodiments shown in the accompanying drawings. 1 is a front sectional view of the device of the present invention, FIG. 2 is a plan sectional view taken along the arrow line in FIG. 1, and FIG. 3 is a partial sectional view taken along the arrow line in FIG. Figure 4 shows the device of the present invention.
It is a perspective view of the state where it is attached to an NC machine tool.
本発明は第４図に示す如く、NC工作機械５の
工具主軸３に装着された研削砥石１は、その保持
部２を介して装着されており、その保持部は一般
の工具シヤンク形状と同様のものであり、テーパ
係合によつて工具主軸３に装着されている。研削
砥石１の保持部２に給電子１８を押圧し、放電加
工用電源６からの陽極を給電する。そのため工具
主軸３と研削砥石１の保持部２との係合部は例え
ばセラミツクス等の非導電性材料を介在させて電
気的に絶縁されている。 As shown in FIG. 4, in the present invention, a grinding wheel 1 mounted on a tool spindle 3 of an NC machine tool 5 is mounted via its holding part 2, and the holding part has the same shape as a general tool shank. It is attached to the tool spindle 3 by tapered engagement. The feeder 18 is pressed against the holding portion 2 of the grinding wheel 1, and the anode from the electrical discharge machining power source 6 is fed. Therefore, the engagement portion between the tool spindle 3 and the holding portion 2 of the grinding wheel 1 is electrically insulated with a non-conductive material such as ceramics interposed therebetween.
給電子１８には放電加工用電源６から導線６６
により陽極が給電され、研削砥石１を成形すると
きのみ前進して研削砥石１の保持部２に押圧接触
し、他は後退し離れている。その装置は、NC工
作機械の適宜の位置に設けたブラケツト５６に取
付けた空圧シリンダ６０の作動によつて行なう。
ピストン５４の先端に取付けたブラケツト５０に
給電子１８が固定されている。その給電子１８は
前記保持部２に安定係合しやすくするために凹面
１８ａが設けられている。また、ブラケツト５０
は例えばセラミツクス等の非導電性材料で作られ
ており、給電子１８からNC工作機械本体側に通
電するのを防いでいる。空圧シリンダ６０は図示
せず空圧供給源に接続され、かつ、従来の公知の
方法で前進後退の動作が制御されている。 A conductor 66 is connected to the feeder 18 from the electric discharge machining power source 6.
The anode is powered by the anode, and moves forward only when forming the grinding wheel 1 to press into contact with the holding portion 2 of the grinding wheel 1, and otherwise retreats and leaves. The device operates by actuating a pneumatic cylinder 60 mounted on a bracket 56 located at a suitable location on the NC machine tool.
A feeder 18 is fixed to a bracket 50 attached to the tip of a piston 54. The feeder 18 is provided with a concave surface 18a to facilitate stable engagement with the holding portion 2. Also, bracket 50
is made of a non-conductive material such as ceramics, and prevents electricity from flowing from the feeder 18 to the NC machine tool body. The pneumatic cylinder 60 is connected to a pneumatic supply source (not shown), and its forward and backward movements are controlled by a conventionally known method.
一方、テーブル４の側部には上述した研削砥石
１との間で放電を行なうための陰極側ワイヤ電極
１４を収納したハウジング３０が取付けられてい
る。このハウジング３０の上方位置に上記ワイヤ
電極１４を案内すると共に支持するワイヤ電極ガ
イド１１（第１図参照）等を有して放電加工を行
なう所であう放電加工ヘツド１０が突設されてい
る。この放電加工ヘツド１０のワイヤ電極１４と
研削砥石１との間で放電加工を行なう場合には、
NC工作機械５のNC装置によつて両者を相対移
動させ、接近させて行う。 On the other hand, a housing 30 is attached to the side of the table 4 and houses a cathode wire electrode 14 for generating electric discharge between the grinding wheel 1 and the grinding wheel 1 described above. An electrical discharge machining head 10 is provided above the housing 30 and has a wire electrode guide 11 (see FIG. 1) for guiding and supporting the wire electrode 14, and is used for electrical discharge machining. When performing electric discharge machining between the wire electrode 14 of this electric discharge machining head 10 and the grinding wheel 1,
The NC device of the NC machine tool 5 moves the two relative to each other and brings them closer together.
次に第１図ないし第３図を参照しながらワイヤ
電極給電装置、ワイヤ電極の繰出し巻き取り機構
及び加工液供給装置等の説明を行なう。繰出しボ
ビン２６に巻回されているワイヤ電極１４はガイ
ドローラ３８、給電ローラ３６、ガイドローラ３
４、ワイヤ電極ガイド１１、ガイドローラ３２、
及びガイドローラ２８を介して巻取りボビン２４
に巻き取られる。この巻取りボビン２４は、軸受
２２を介して回転可能な立設軸２０に固定されて
おり、モータＭの出力回転を減速機１２を介して
歯車１４に伝動し、該歯車１４と噛合する他の歯
車１６を介して立設軸２０を回転させてワイヤ電
極１４を巻き取る。 Next, the wire electrode power supply device, the wire electrode feeding and winding mechanism, the machining fluid supply device, etc. will be explained with reference to FIGS. 1 to 3. The wire electrode 14 wound around the feeding bobbin 26 is connected to the guide roller 38, the power supply roller 36, and the guide roller 3.
4, wire electrode guide 11, guide roller 32,
and the winding bobbin 24 via the guide roller 28.
It is wound up. This winding bobbin 24 is fixed to a rotatable upright shaft 20 via a bearing 22, transmits the output rotation of the motor M to the gear 14 via the reducer 12, and meshes with the gear 14. The vertical shaft 20 is rotated via the gear 16 of the wire electrode 14 to be wound up.
上記ガイドローラ２８，３２，３４及び３８、
ワイヤ電極ガイド１１、繰出しボビン２６、及び
巻取りボビン２４は絶縁材料でつくられるか又は
絶縁ブツシユを介して軸承されている。一方、給
電ローラ３６は導電性材料でつくられており、第
４図に示した放電加工用電源６に接続された導線
７０を介して陰極を給電されている。導線７０は
導電性の軸４１にターミナル４８を介して接続さ
れている。上記給電ローラ３６は絶縁ブツシユ４
２によつて軸承された導電性軸４０に固定されて
おり、その下端にはカーボン製ブラシ４４が固定
されている。そのブラシ４４の下面には前記導電
性の軸４１がコイルばね４６によつて常時押圧接
触させられている。こうして陰極は導線７０から
給電ローラ３６を介してワイヤ電極１４に給電さ
れる。 the guide rollers 28, 32, 34 and 38;
The wire electrode guide 11, the payout bobbin 26, and the take-up bobbin 24 are made of an insulating material or are supported via an insulating bush. On the other hand, the power supply roller 36 is made of an electrically conductive material, and a cathode is supplied with power through a conductive wire 70 connected to the electric discharge machining power source 6 shown in FIG. Conductive wire 70 is connected to conductive shaft 41 via terminal 48 . The power supply roller 36 is connected to the insulating bushing 4
2, and a carbon brush 44 is fixed to the lower end of the conductive shaft 40. The conductive shaft 41 is constantly pressed into contact with the lower surface of the brush 44 by a coil spring 46. In this way, the cathode is supplied with power from the conducting wire 70 to the wire electrode 14 via the power supply roller 36.
ガイドローラ３２，３４は、ワイヤ電極１４を
案内するためのＶ溝をその外周に設けているワイ
ヤ電極ガイド１１にそのワイヤ電極１４を巻架す
る場合に、その巻架領域角度θが180度よりも大
きくなるようにワイヤ電極１４を張設している。
こうした状態に設定し、放電加工に際してワイヤ
電極１４をモータＭの動力により巻取りボビン２
４に巻き取るが、ワイヤ電極１４の張力を適切に
保持するために繰出しボビン２６側はブレーキ機
構を装備して軸承されている。またガイドローラ
２８を導電性材料で製作し、電気絶縁を絶縁ブツ
シユで行なう構成にし、このガイドローラ２８に
対してワイヤ断線検出用導線を接触させておけ
ば、ワイヤ電極１４からの通電状態が切れること
を検知することにより放電加工中のワイヤ電極１
４の断線が容易に検知され得る。 When winding the wire electrode 14 around the wire electrode guide 11, which has a V-groove on its outer periphery for guiding the wire electrode 14, the guide rollers 32 and 34 are configured so that the winding area angle θ is less than 180 degrees. The wire electrode 14 is stretched in such a way that the wire electrode 14 is also large.
With this state set, the wire electrode 14 is wound onto the winding bobbin 2 by the power of the motor M during electrical discharge machining.
In order to maintain the tension of the wire electrode 14 appropriately, the payout bobbin 26 side is equipped with a brake mechanism and is supported by a shaft. In addition, if the guide roller 28 is made of a conductive material and electrically insulated by an insulating bushing, and a wire for wire breakage detection is brought into contact with the guide roller 28, the current from the wire electrode 14 can be cut off. By detecting the wire electrode 1 during electrical discharge machining,
4 can be easily detected.
上述したワイヤ電極１４のワイヤ電極ガイド１
１への巻架の領域角度θを180度よりも大きく設
定すると、第２図の点Ｐ１において被加工物であ
る研削砥石WAの先端面の放電加工が可能とな
り、また他点Ｐ２において研削砥石WBの内側面
の放電加工が可能となる。 Wire electrode guide 1 of the wire electrode 14 described above
If the area angle θ of the winding rack to 1 is set larger than 180 degrees, it becomes possible to perform electrical discharge machining of the tip surface of the grinding wheel WA, which is the workpiece, at point P1 in Fig. 2, and at the other point P2. It becomes possible to perform electric discharge machining on the inner surface of the WB.
研削砥石１とワイヤ電極１４との間で放電加工
をおこなわせるとき通常加工液を供給する。加工
液は油性のもの又は水等目的に応じて使用され
る。その加工液を放電加工部に噴射するために加
工液供給装置（図示せず）から加工液導管８０，
８１を介してワイヤ電極ガイド１１の上部に導か
れた加工液は、放射状に配設された加工液噴射孔
７６から噴射されるが、蓋部材７２の下面周囲に
設けられた環状傾斜部７４の案内により、研削砥
石１とワイヤ電極１４との間の放電加工部へ導か
れる。 When electrical discharge machining is performed between the grinding wheel 1 and the wire electrode 14, machining fluid is normally supplied. The machining fluid may be oil-based or water, depending on the purpose. A machining fluid conduit 80 from a machining fluid supply device (not shown) to inject the machining fluid to the electrical discharge machining section.
The machining fluid guided to the upper part of the wire electrode guide 11 via the wire electrode guide 11 is injected from the machining fluid injection holes 76 arranged radially. The guide leads to the electrical discharge machining section between the grinding wheel 1 and the wire electrode 14.
本実施例では被加工材である研削砥石１に放電
加工用電源から陽極を接続し、加工工具であるワ
イヤ電極１４に陰極を接続し、放電加工部に加工
液を噴射して研削砥石１の表面を形成（又は整
形）して、所望形状の高精度の研削砥石を作製し
ているのである。研削砥石１は回転Ａが与えら
れ、ワイヤ電極ガイド１１に支持されたワイヤ電
極１４は矢印Ｃの送りが与えられ、研削砥石１に
接近した位置で放電加工が開始される。ワイヤ電
極１４が研削砥石１と放電加工で接する部分のワ
イヤ電極１４は、ワイヤ電極ガイド１１で支持さ
れているため、ワイヤ電極１４にたわみが生ずる
ことなく、しかもワイヤ電極１４に送りＣが与え
られ、常に新しいワイヤ電極１４で放電加工して
いるので、いわゆる電極のたわみや電極消耗によ
る誤差がなく高精度の成形ができるのである。研
削砥石１とワイヤ電極１４との相対的移動（矢印
Ｄ、矢印Ｅ）はNC工作機械５のNC装置のプロ
グラム指令によつて制御されるものである。 In this embodiment, the anode is connected to the grinding wheel 1, which is the workpiece, from a power source for electric discharge machining, the cathode is connected to the wire electrode 14, which is the machining tool, and machining fluid is injected to the electric discharge machining part, and the grinding wheel 1 is heated. The surface is formed (or shaped) to produce a highly accurate grinding wheel with a desired shape. The grinding wheel 1 is given a rotation A, the wire electrode 14 supported by the wire electrode guide 11 is fed in the direction of an arrow C, and electrical discharge machining is started at a position close to the grinding wheel 1. The portion of the wire electrode 14 where the wire electrode 14 contacts the grinding wheel 1 during electrical discharge machining is supported by the wire electrode guide 11, so that the wire electrode 14 does not bend and the feed C is applied to the wire electrode 14. Since electrical discharge machining is always performed using a new wire electrode 14, highly accurate molding is possible without errors caused by so-called electrode deflection or electrode wear. The relative movement between the grinding wheel 1 and the wire electrode 14 (arrow D, arrow E) is controlled by program commands of the NC device of the NC machine tool 5.
再び第４図を参照すると、NC工作機械５の工
具主軸３に砥石保持部２を介して研削砥石１を取
付けてある。NC工作機械５のテーブル４には図
示せずワークが取付けられて、研削砥石１で研削
加工を施すものである。テーブル４の側部に本装
置のハウジング３０が取付けられている。本発明
は、このNC工作機械５が研削加工を行い、砥石
が摩耗したとき、又は砥石の形状を変えたいとき
等に本装置を利用して、研削砥石１をNC工作機
械５に装着したままで研削砥石１を所望形状に成
形（又は整形）しようとするものである。 Referring again to FIG. 4, the grinding wheel 1 is attached to the tool spindle 3 of the NC machine tool 5 via the grinding wheel holder 2. A workpiece (not shown) is attached to the table 4 of the NC machine tool 5, and is subjected to grinding processing using the grinding wheel 1. A housing 30 of the device is attached to the side of the table 4. In the present invention, when the NC machine tool 5 performs a grinding process and the grindstone becomes worn, or when it is desired to change the shape of the grindstone, this device is used to keep the grinding wheel 1 attached to the NC machine tool 5. The purpose is to shape (or shape) the grinding wheel 1 into a desired shape.
以上の説明から明らかなように、本発明によれ
ば、研削砥石が目詰まりしたり、又は研削砥石が
摩耗したときは砥石のドレツシング又はは整形を
しなければならないが、その作業がNC工作機械
に研削砥石を取付けたままの状態で行なえるの
で、その作業が短時間で、しかも高精度に行うこ
とができる。また、放電加工によりメタルボンド
又は鋳鉄ボンド等の母材を成形するので、砥粒を
破壊せず研削性能が落ちないという利点がある。
更に、本発明では、研削砥石への給電を研削砥石
の保持部に接触させる給電子で行うので、NC工
作機械の主軸内部から給電する必要がなく、装置
が簡単で安価であると共に、給電子の摩耗が少な
く長時間の使用に耐え、しかも給電を確実に行う
ことができる。
As is clear from the above description, according to the present invention, when the grinding wheel becomes clogged or worn, it is necessary to dress or shape the grinding wheel, but this work is performed by an NC machine. Since the work can be done with the grinding wheel attached to the machine, the work can be done in a short time and with high precision. Furthermore, since the base material such as metal bond or cast iron bond is formed by electrical discharge machining, there is an advantage that the abrasive grains are not destroyed and the grinding performance does not deteriorate.
Furthermore, in the present invention, power is supplied to the grinding wheel by a feeder that contacts the holding part of the grinding wheel, so there is no need to feed power from inside the main spindle of the NC machine tool, and the device is simple and inexpensive. It can withstand long-term use with little wear and tear, and can provide reliable power supply.
第１図は本発明装置の正面断面図、第２図は第
１図の矢視線−の平面断面図、第３図は加工
液噴射ノズル部の第１図の矢視線−の部分断
面図、第４図は本発明装置をNC工作機械に取付
けた状態の斜視図である。
１……研削砥石、２……研削砥石の保持部、３
……工具主軸、５……NC工作機械、６……放電
加工用電源、１０……放電加工ヘツド、１１……
ワイヤ電極ガイド、１４……ワイヤ電極、１８…
…給電子、２４……巻取りボビン、２６……繰出
しボビン、２８，３２，３４，３８……ガイドロ
ーラ、３０……ハウジング、３６……給電ロー
ラ、Ｍ……モータ。
1 is a front sectional view of the device of the present invention, FIG. 2 is a plan sectional view taken along the arrow line in FIG. 1, and FIG. 3 is a partial sectional view taken along the arrow line in FIG. FIG. 4 is a perspective view of the device of the present invention installed on an NC machine tool. 1... Grinding wheel, 2... Grinding wheel holding part, 3
... Tool spindle, 5 ... NC machine tool, 6 ... Electric discharge machining power supply, 10 ... Electric discharge machining head, 11 ...
Wire electrode guide, 14...Wire electrode, 18...
...Feeder, 24... Winding bobbin, 26... Payout bobbin, 28, 32, 34, 38... Guide roller, 30... Housing, 36... Power supply roller, M... Motor.
Claims (1)
の形状を成形する装置において、NC工作機械の
主軸と絶縁して装着され、回転軸線と同軸に形成
された円形状の保持部を有する研削砥石と、導電
性材料で形成した給電子を前記回転する研削砥石
の保持部に接触させて研削砥石に給電する砥石給
電装置と、外周が円形状で回転自在に軸承され、
その外周に180度を越える角度範囲に亘つてワイ
ヤ電極を巻架し、放電加工部におけるワイヤ電極
を走行させながら支持するガイド溝を有するワイ
ヤ電極ガイドと、前記ワイヤ電極ガイドに支持さ
れ、繰り出し巻き取り機構により走行されるワイ
ヤ電極と、導電性材料で形成した給電子を前記走
行するワイヤ電極に接触させてワイヤ電極に給電
するワイヤ電極給電装置と、放電加工部に加工液
を供給する加工液供給装置と、前記研削砥石と前
記180度を越える角度範囲における前記ワイヤ電
極との間で放電加工を行わせる放電加工用電源装
置とを具備して構成されたことを特徴とする研削
砥石の成形装置。 ２ 前記砥石給電装置は、研削砥石を成形すると
きに給電子を前進させて前記研削砥石の保持部に
係合接触させ給電し、成形作業終了後給電子を後
退させ係合解離させるアクチユエータを有して成
る特許請求の範囲第１項に記載の研削砥石の成形
装置。 ３ 前記加工液供給装置は、前記放電加工部に向
けて放射状に配置した加工液噴射口を有して成る
特許請求の範囲第１項又は第２項に記載の研削砥
石の成形装置。[Scope of Claims] 1. In an apparatus for forming the shape of a grinding wheel by electric discharge machining using a wire electrode, a circular holding part is mounted insulated from the main shaft of an NC machine tool and formed coaxially with the rotation axis. A grinding wheel power supply device that supplies power to the grinding wheel by bringing a feeder formed of a conductive material into contact with a holding portion of the rotating grinding wheel, the outer periphery of which is circular and rotatably supported,
A wire electrode guide has a wire electrode wound around its outer periphery over an angular range exceeding 180 degrees, and has a guide groove that supports the wire electrode while running in the electrical discharge machining section. A wire electrode that is run by a take-up mechanism, a wire electrode power supply device that supplies power to the wire electrode by bringing a feeder formed of a conductive material into contact with the running wire electrode, and a machining fluid that supplies machining fluid to an electrical discharge machining section. Forming of a grinding wheel characterized by comprising a supply device and a power source device for electric discharge machining that performs electric discharge machining between the grinding wheel and the wire electrode in the angular range exceeding 180 degrees. Device. 2. The grindstone power supply device includes an actuator that advances the feeder to engage and contact the holding portion of the grindstone to supply power when forming the grinding wheel, and retracts the feeder to disengage and disengage after the forming operation is completed. A grinding wheel forming device according to claim 1, comprising: 3. The grinding wheel forming device according to claim 1 or 2, wherein the machining fluid supply device has machining fluid injection ports arranged radially toward the electrical discharge machining section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18778787A JPS6434664A (en) | 1987-07-29 | 1987-07-29 | Restoration device for grinding stone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18778787A JPS6434664A (en) | 1987-07-29 | 1987-07-29 | Restoration device for grinding stone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6434664A JPS6434664A (en) | 1989-02-06 |
| JPH0438535B2 true JPH0438535B2 (en) | 1992-06-24 |
Family
ID=16212219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18778787A Granted JPS6434664A (en) | 1987-07-29 | 1987-07-29 | Restoration device for grinding stone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6434664A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954518B (en) * | 2010-10-12 | 2012-01-25 | 华中科技大学 | Horizontal micro-electric spark machine tool and method for performing online processing by applying same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130330A (en) * | 1984-07-19 | 1986-02-12 | Inoue Japax Res Inc | Method of machining metal-bonded material |
-
1987
- 1987-07-29 JP JP18778787A patent/JPS6434664A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130330A (en) * | 1984-07-19 | 1986-02-12 | Inoue Japax Res Inc | Method of machining metal-bonded material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6434664A (en) | 1989-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5110430B2 (en) | Robotic machine tools that use endless belts for machining | |
| US4233486A (en) | Traveling-wire electrical discharge machine | |
| JPH0438535B2 (en) | ||
| JP4195668B2 (en) | Truing method and centerless grinding method for centerless grinding machine for bar workpiece | |
| JPH0411333B2 (en) | ||
| JPH0238346B2 (en) | ||
| CN209902427U (en) | Tattoo needle handle welding machine tin wire unwinding device | |
| JPH0248121A (en) | Conducting device for wire electric spark machine | |
| JPH0246326B2 (en) | WAIYAKATSUTOHODENKAKOSOCHI | |
| JP4215499B2 (en) | Electrode fixing jig for internal grinding equipment | |
| JP2002036110A (en) | Method and device for supplying power to grinding apparatus | |
| JP3669073B2 (en) | Grinding apparatus and grinding method | |
| JP3404119B2 (en) | Wire electric discharge machining method and apparatus | |
| JPH0229471B2 (en) | ||
| SU1078480A1 (en) | Apparatus for winding tape magnetic circuits | |
| SU860980A1 (en) | Apparatus for guiding wire electrode to electric discharge cutting-out machine | |
| JP2594078B2 (en) | Current supply device for wire cut electric discharge machine | |
| JP3883879B2 (en) | Wire electrode traveling path forming device for wire electric discharge machining and wire electric discharge machining device for end mill tool cutting edge | |
| GB843508A (en) | Manufacture of finned tube | |
| JPS59232728A (en) | Positioning guide of wire electrode for wire-cut electric discharge machining | |
| JPS61164726A (en) | Wire electrode guide | |
| JPH0469032B2 (en) | ||
| JPH0511955Y2 (en) | ||
| JPH0425094B2 (en) | ||
| JPS60167720A (en) | Guide also serving as electric supply element for wire cut discharge machine |