JPS6119910Y2 - - Google Patents
Info
- Publication number
- JPS6119910Y2 JPS6119910Y2 JP1981045186U JP4518681U JPS6119910Y2 JP S6119910 Y2 JPS6119910 Y2 JP S6119910Y2 JP 1981045186 U JP1981045186 U JP 1981045186U JP 4518681 U JP4518681 U JP 4518681U JP S6119910 Y2 JPS6119910 Y2 JP S6119910Y2
- Authority
- JP
- Japan
- Prior art keywords
- grinding
- coolant
- workpiece
- pressure
- signal
- 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
Links
- 239000002826 coolant Substances 0.000 claims description 45
- 239000007788 liquid Substances 0.000 claims description 14
- 238000003754 machining Methods 0.000 claims description 8
- 238000004513 sizing Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Description
【考案の詳細な説明】
本考案は研削加工すべき円筒部に近接して断続
的な端面をもつ工作物とか円筒部に近接してスプ
ライン部を有する工作物を高精度に研削加工する
装置に関するものである。[Detailed Description of the Invention] The present invention relates to a device for highly accurate grinding of a workpiece having an intermittent end face in the vicinity of a cylindrical part to be ground or a workpiece having a spline part in the vicinity of the cylindrical part. It is something.
一般にスプライン部と円筒部の同時研削とか断
続的な端面を有する工作物の端面と円筒部の同時
研削のように、研削中に砥削抵抗が変動する場合
においては、機械あるいは工作物にかかる研削抵
抗の変動に対して加工精度が悪化することは知ら
れている。ところが研削抵抗自体変動しないと考
えられる工作物でもアンギユラー形状の砥石側面
に近接する端面が断続する場合等においては、こ
れが円筒部の加工精度へ影響を及ぼすことがあ
る。 In general, when grinding resistance changes during grinding, such as simultaneous grinding of a spline part and a cylindrical part, or simultaneous grinding of an end face and a cylindrical part of a workpiece with intermittent end faces, the grinding force applied to the machine or workpiece It is known that machining accuracy deteriorates as resistance changes. However, even for a workpiece in which the grinding resistance itself is not thought to vary, if the end face close to the side surface of the angular shaped grinding wheel is interrupted, this may affect the machining accuracy of the cylindrical part.
この原因を追求した結果、クーラント液圧力が
加工精度に影響を及ぼすことが判明した。特に最
近の高速、高能率を目ざした研削においては砥石
周速度の高速化に伴いクーラント液圧力の高圧
化、大容量化が行われているため、高圧のクーラ
ント液が工作物端面と砥石側面間にも供給される
ことになり、両者間に発生する動圧が砥石側面に
近接する端面の断続に伴つて変動するためと考え
られる。かかる動圧の変動により工作物と砥石の
相対変位が生じ加工精度に影響を及ぼし、工作物
円筒部の真円度低下がもたらされる。又、円筒部
に近接してスプライン部がある場合にも高圧のク
ーラント液がスプラインの山や谷に衝突すること
により生ずる動圧の変動によつても同様の結果と
なることが判明した。 As a result of investigating the cause of this problem, it was discovered that coolant fluid pressure affects machining accuracy. In particular, in recent grinding aimed at high speed and high efficiency, the pressure and volume of coolant fluid has increased as the circumferential speed of the grinding wheel increases, so high pressure coolant fluid flows between the end surface of the workpiece and the side surface of the grinding wheel. It is thought that this is because the dynamic pressure generated between the two fluctuates as the end face close to the side surface of the grinding wheel is interrupted. Such fluctuations in dynamic pressure cause relative displacement between the workpiece and the grinding wheel, which affects machining accuracy and reduces the roundness of the cylindrical part of the workpiece. It has also been found that even when there is a spline section close to the cylindrical section, a similar result can be obtained due to fluctuations in dynamic pressure caused by high-pressure coolant liquid colliding with the peaks and valleys of the spline.
本考案はかかる点に鑑みて、クーラント液供給
に伴い砥石側面と工作物端面間とかスプライン部
に発生する動圧を減じるようにしたものであり、
特に砥石切込み速度が小さくなる仕上げ加用時に
クーラント液圧力を低下させて動圧の発生を抑制
せしめんとするものである。 In view of this point, the present invention is designed to reduce the dynamic pressure generated between the side surface of the grinding wheel and the end surface of the workpiece or at the spline portion due to the supply of coolant.
The purpose is to suppress the generation of dynamic pressure by lowering the coolant fluid pressure, especially during finishing when the cutting speed of the grindstone is low.
以下本考案の実施例を図面に基いて説明する。
第１図、第２図において、１０はアンギユラスラ
イド形の研削盤で、ベツド１１上にはワークテー
ブル１２及び砥石台１が互いに角度θをなして交
叉する方向に摺動可能に案内されており、ワーク
テーブル１２上には主軸台１４、心押台１５が載
置され、工作物Ｗの両端をセンタ１６，１７にて
回転軸承している。砥石台１３にはアンギユラ形
砥石１８が回転自在に装架さ、駆動モータ１９に
て回転駆動される。ワークテーブル１２及び砥石
台１３には図示省略の送り装置が設けられてお
り、ワークテーブル１２の工作物軸線方向の位置
調整と砥石台１３の前進後退送りが制御される。
２０は研削点の上方に設けられたクーラントノズ
ルで、研削点にクーラントを噴出させるべく先端
が細く絞られており、他端は管路２１を介してク
ーラント供給源２２に連通されている。クーラン
ト供給源２２にはクーラントタンクよりクーラン
ト液を汲み上げる大容量ポンプ２３と小容量ポン
プ２４が設けられ、吐出流体の流通を許容し逆流
を阻止する逆止弁２５，２６を介して前記管路２
１に連通されている。この大容量ポンプ２３のみ
を起動すれば大量のクーラント液がクーラントノ
ズル２０に供給され、ノズル背圧としてのクーラ
ント液圧力は高圧力に維持される。この場合小容
量ポンプ２４への流入は逆止弁２６にて阻止され
全量クーラントノズル２０に供給されるので容量
ポンプ２４の停止に伴う圧力損失は生じない。小
容量ポンプ２４のみを起動すれば供給量は低下
し、ノズル背圧としてのクーラント液圧力は低圧
力となる。２８は工作物の加工径を測定する定寸
装置で、加工径が予め設定した寸法になると数段
階にわたつて信号を発し、例えば１段信号S1で砥
石台１３の粗研削送りから精研削送りに切替え、
２段信号S2によつて砥石台１３の送りを止めてス
パークアウト研削に切替え、最終段の定寸信号S3
によつて砥石台１３を後退させ研削加工を終了さ
せるようになつている。 Embodiments of the present invention will be described below with reference to the drawings.
In FIGS. 1 and 2, reference numeral 10 denotes an angular slide type grinding machine, in which a work table 12 and a grindstone head 1 are slidably guided on a bed 11 in intersecting directions at an angle θ. A headstock 14 and a tailstock 15 are placed on the work table 12, and both ends of the workpiece W are rotatably supported at centers 16 and 17. An angular grindstone 18 is rotatably mounted on the grindstone head 13 and is rotationally driven by a drive motor 19 . The work table 12 and the grindstone head 13 are provided with a feeding device (not shown), which controls the position adjustment of the work table 12 in the workpiece axis direction and the forward and backward feeding of the whetstone head 13.
Reference numeral 20 designates a coolant nozzle provided above the grinding point, the tip of which is narrowed to spray coolant to the grinding point, and the other end communicates with a coolant supply source 22 via a pipe 21. The coolant supply source 22 is provided with a large-capacity pump 23 and a small-capacity pump 24 for pumping coolant liquid from a coolant tank.
1 is connected. If only this large capacity pump 23 is activated, a large amount of coolant liquid is supplied to the coolant nozzle 20, and the coolant liquid pressure as the nozzle back pressure is maintained at a high pressure. In this case, the flow into the small capacity pump 24 is blocked by the check valve 26 and the entire amount is supplied to the coolant nozzle 20, so no pressure loss occurs due to the stoppage of the capacity pump 24. If only the small-capacity pump 24 is activated, the supply amount decreases, and the coolant liquid pressure as the nozzle back pressure becomes low. 28 is a sizing device that measures the machining diameter of the workpiece, and when the machining diameter reaches a preset size, it emits signals in several stages. For example, the first stage signal S1 causes the grinding wheel head 13 to change from rough grinding feed to fine grinding. Switch to feed,
The feed of the grinding wheel head 13 is stopped by the second stage signal S 2 and switched to spark-out grinding, and the final stage sizing signal S 3
The grinding wheel head 13 is moved back to complete the grinding process.
かかる２段信号S2が発せられるまでの粗研削送
り、精研削送りにおいては、前記大容量ポンプ２
３を起動して高圧力のクーラント液を供給し、２
段信号S2が発せられた後のスパークアウト研削に
おいては小容量ポンプ２４に切替えて低圧力のク
ーラント液の供給が行われる。 During rough grinding feed and fine grinding feed until such two-stage signal S2 is issued, the large capacity pump 2
Start 3 to supply high pressure coolant, and
In spark-out grinding after the stage signal S2 is issued, the small capacity pump 24 is switched to supply low pressure coolant liquid.
かかる大容量ポンプ２３、小容量ポンプ２４の
切替制御は、第３図に示すように、大容量ポンプ
駆動モータM1、小容量ポンプ駆動モータM2の電
源回路に前記定寸装置２８の２段信号によつて開
閉されるリレー接点crs２−１，crs２−２を接続
しておく。尚リレー接点crs２−１は常時閉路接
点で、前記２段信号S2が発せられるまでは閉じて
おり、起動指令によつて閉成され研削サイクル終
了によつて開かれる接点cr１０を介してモータ
M1だけ通電され大容量ポンプ２３を起動する。
定寸装置２８より２段信号S2が発せられれば常時
閉路接点crs２−１は開かれ、常時開路接点crs２
−２が閉じられモータM2が通電され、小容量ポ
ンプ２４を起動する。前記工作物Ｗの加工個所と
しては大径フランジ部Wfの一側面より突設され
た部分の円筒面Waとその端面Wbであり、砥石１
８は両加工面を同時に研削するべく研削面Ga，
Gbを有するアンギユラ形に成形されている。こ
の砥石１８の側面１８ｓに近接する大径フランジ
部Wfの端面には、円周方向所定間隔に穴が穿設
されているものとする。このため砥石側面１８ｓ
に近接する工作物端面は断続することになる。前
記クーラントノズル２０より噴出するクーラント
液は加工面Wa，Wbばかりでなく、砥石側面１８
ｓと工作物端面間にも供給されることになり、工
作物回転に伴い両者間に生ずるクーラント液圧力
（動圧）が変動する原因となつている。かかる動
圧は砥石側面１８ｓに対する工作物変位をもたら
すが、第４図に示すように工作物変位量は、クー
ラントノズルに供給するクーラント液圧力を低下
させれば小さくなることが確認された。したがつ
て工作物端面と砥石側面１８ｓとの隙間を一定に
した状態で、前述の如く仕上げ研削時にクーラン
ト液圧力を低下させれば、両者間に発生する動圧
の変動を小さくでき、工作物変位量を抑制できる
ので、円筒部の真円度を悪化させることなく研削
加工することができる。その上粗研削加工時には
高圧、大容量のクーラント液が供給されるので、
重研削を行つても研削焼け等を生じさせない。 The switching control of the large capacity pump 23 and the small capacity pump 24 is performed by connecting the two stages of the sizing device 28 to the power circuits of the large capacity pump drive motor M 1 and the small capacity pump drive motor M 2 as shown in FIG. Relay contacts crs2-1 and crs2-2, which are opened and closed by signals, are connected. The relay contact crs2-1 is a normally closed contact and is closed until the two-step signal S2 is issued, and the motor is connected to the motor via the contact cr10, which is closed by the start command and opened by the end of the grinding cycle.
Only M1 is energized to start the large capacity pump 23.
When the two-stage signal S2 is issued from the sizing device 28, the normally closed contact crs2-1 is opened, and the normally open contact crs2 is opened.
-2 is closed and motor M2 is energized, starting the small capacity pump 24. The parts to be machined on the workpiece W are the cylindrical surface Wa of the part protruding from one side of the large-diameter flange Wf and its end surface Wb, and the grinding wheel 1
8 is the grinding surface Ga, in order to grind both processing surfaces at the same time.
It is formed into an angular shape with Gb. It is assumed that holes are bored at predetermined intervals in the circumferential direction in the end surface of the large diameter flange portion Wf adjacent to the side surface 18s of this grindstone 18. For this reason, the side surface of the whetstone is 18s.
The workpiece end face close to will be interrupted. The coolant liquid spouted from the coolant nozzle 20 is applied not only to the machined surfaces Wa and Wb but also to the side surface 18 of the grinding wheel.
The coolant liquid is also supplied between the coolant s and the end face of the workpiece, causing variations in the coolant pressure (dynamic pressure) generated between the two as the workpiece rotates. Such dynamic pressure causes a displacement of the workpiece relative to the grinding wheel side surface 18s, but as shown in FIG. 4, it has been confirmed that the amount of displacement of the workpiece can be reduced by lowering the pressure of the coolant liquid supplied to the coolant nozzle. Therefore, if the coolant pressure is lowered during finish grinding as described above while keeping the gap between the workpiece end face and the grinding wheel side surface 18s constant, fluctuations in the dynamic pressure generated between the two can be reduced, and the workpiece Since the amount of displacement can be suppressed, grinding can be performed without deteriorating the roundness of the cylindrical part. Furthermore, during rough grinding, high pressure and large volume of coolant fluid is supplied, so
Does not cause grinding burn etc. even during heavy grinding.
尚、上記実施例は、大容量ポンプ２３と小容量
ポンプ２４の２台のポンプを使用しているが、ポ
ンプは一台でも良く、吐出されるクーラント液を
クーラントノズルに全量供給したり、途中でクー
ラントタンクにバイパスしてクーラントノズル供
給流量を減ずるように選択切替えする弁を設ける
ようにしても良い。 Although the above embodiment uses two pumps, the large-capacity pump 23 and the small-capacity pump 24, it is also possible to use only one pump, and it is possible to supply the entire amount of the coolant to be discharged to the coolant nozzle, or Alternatively, a valve may be provided that selectively switches to bypass the coolant tank and reduce the flow rate supplied to the coolant nozzle.
本考案によれば、研削抵抗自体変動しない工作
物であつて、砥石側面に近接する端面が断続する
場合等においても、仕上研削時におけるクーラン
ト液圧力を低下させて研削加工するようにしたか
ら円筒部加工精度への影響をなくすことができ、
加工精度の向上を図ることができる効果を有す
る。 According to the present invention, even in cases where the grinding resistance itself does not change and the end face close to the side surface of the grinding wheel is interrupted, the coolant liquid pressure during finish grinding can be lowered to perform the grinding process. The effect on part machining accuracy can be eliminated,
This has the effect of improving processing accuracy.
図面は本考案の実施例を示すもので、第１図は
アンギユラスライド形研削盤の平面図、第２図は
クーラント供給手段を示す図、第３図は切替制御
回路を示すリレー回路線図、第４図はクーラント
液圧力と工作物変位の関係を示す線図である。
１３……砥石台、１４……主軸台、１５……心
押台、１８……砥石、２０……クーラントノズ
ル、２２……クーラント液供給装置、２３……大
容量ポンプ、２４……小容量ポンプ、２５，２６
……逆止弁、２８……定寸装置、Ｗ……工作物。
The drawings show an embodiment of the present invention: Fig. 1 is a plan view of an angular slide type grinder, Fig. 2 is a diagram showing the coolant supply means, and Fig. 3 is a relay circuit diagram showing the switching control circuit. , FIG. 4 is a diagram showing the relationship between coolant liquid pressure and workpiece displacement. 13... Grinding wheel head, 14... Headstock, 15... Tailstock, 18... Grinding wheel, 20... Coolant nozzle, 22... Coolant liquid supply device, 23... Large capacity pump, 24... Small capacity pump, 25, 26
... Check valve, 28 ... Sizing device, W ... Workpiece.
Claims (1)
の噴射される領域内に断続的な凹凸面を有する
工作物に対し回転する砥石を相対運動させて前
記円筒部を研削加工する装置において、砥石と
工作物が接触する研削点にクーラント液を噴射
するクーラントノズルを設け、このクーラント
ノズルに供給するクーラント液圧力を少くとも
高低２段階に切替え可能なクーラント液供給装
置を設け、工作物の加工径を測定し、前記砥石
の切込み速度が比較的大きい時には第１の信号
を、前記切込み速度が小さい仕上げ研削時もし
くはスパークアウト研削時には第２の信号を発
する定寸装置を設け、この定寸装置より発せら
れる前記第１の信号によりクーラント液圧力を
高圧に切替え、前記第２の信号によりクーラン
ト液圧力を低圧に切替える切替制御手段を設け
たことを特徴とする研削加工装置。 (2) 前記クーラント液供給装置は、大容量ポンプ
と小容量ポンプを有する実用新案登録請求の範
囲第１項記載の研削加工装置。[Claims for Utility Model Registration] (1) A rotating grindstone is moved relative to a workpiece that is close to the cylindrical portion to be ground and has an intermittent uneven surface in an area where coolant is sprayed. In equipment for grinding parts, a coolant nozzle that injects coolant liquid is provided at the grinding point where the grinding wheel and the workpiece come into contact, and the coolant liquid pressure supplied to the coolant nozzle can be switched to at least two levels, high and low. A device is installed to measure the machining diameter of the workpiece, and when the cutting speed of the grindstone is relatively high, a first signal is emitted, and when the cutting speed is low, the second signal is emitted during finish grinding or spark-out grinding. Grinding characterized in that a device is provided, and a switching control means is provided for switching the coolant pressure to high pressure in response to the first signal emitted from the sizing device and switching the coolant pressure to low pressure in response to the second signal. Processing equipment. (2) The grinding device according to claim 1, wherein the coolant supply device includes a large-capacity pump and a small-capacity pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981045186U JPS6119910Y2 (en) | 1981-03-30 | 1981-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981045186U JPS6119910Y2 (en) | 1981-03-30 | 1981-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57157458U JPS57157458U (en) | 1982-10-02 |
| JPS6119910Y2 true JPS6119910Y2 (en) | 1986-06-14 |
Family
ID=29842086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981045186U Expired JPS6119910Y2 (en) | 1981-03-30 | 1981-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6119910Y2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5034427B2 (en) | 2006-10-12 | 2012-09-26 | 株式会社ジェイテクト | Method for releasing dynamic pressure of grinding fluid in grinding, grinding method using the method, and grinding wheel used in the grinding method |
| JP5167920B2 (en) | 2008-04-11 | 2013-03-21 | 株式会社ジェイテクト | Grinding machine and grinding method |
| JP5428626B2 (en) * | 2009-08-05 | 2014-02-26 | 株式会社ジェイテクト | Grinder |
| JP5935568B2 (en) * | 2012-07-24 | 2016-06-15 | 株式会社ジェイテクト | Grinding machine and grinding method |
| JP7069634B2 (en) * | 2017-10-20 | 2022-05-18 | 株式会社ジェイテクト | Grinding machine and grinding method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5152584A (en) * | 1974-10-31 | 1976-05-10 | Inoue Japax Res | KENSAKUKAKOSOCHI |
-
1981
- 1981-03-30 JP JP1981045186U patent/JPS6119910Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5152584A (en) * | 1974-10-31 | 1976-05-10 | Inoue Japax Res | KENSAKUKAKOSOCHI |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57157458U (en) | 1982-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4151684A (en) | Grinding machine with a re-truing device | |
| JPS6119910Y2 (en) | ||
| CA2264506C (en) | Variable volume coolant system | |
| US3774348A (en) | Horizontal double disc grinder with anti-vacuum control | |
| US5010692A (en) | Polishing device | |
| US3019562A (en) | Grinding machine with dual purpose grinding wheels | |
| JPS61182771A (en) | Inner-surface grinding at precise tolerance using atmizing of cooling medium | |
| EP0903200B1 (en) | Improved grinding process and apparatus | |
| US3694340A (en) | Electrolytic grinding machine | |
| US2248172A (en) | Race grinder | |
| JP2003103460A (en) | Method and device for grinding workpiece surface into superfinished surface having oil retaining part | |
| JP3692731B2 (en) | Cutting / grinding method and machine tool | |
| JP2602514Y2 (en) | Internal grinding machine | |
| JP3988630B2 (en) | Coolant supply method and apparatus for grinding machine | |
| JPH06155300A (en) | Superhigh speed grinding method and device therefor | |
| US4839992A (en) | Polishing device | |
| JPS62199357A (en) | Face machining device for workpiece in cantilever type surface grinding machine | |
| JPH0637075A (en) | Processing method using grindstone | |
| JPH01216771A (en) | Noncontact detecting method for distance between grinding wheel and workpiece | |
| JPH0899257A (en) | Grinding device | |
| JP2003094335A (en) | Grinding fluid feed method and device in grinder | |
| JPS6161754A (en) | Grinding method using angular grinding wheel | |
| JPS6274571A (en) | Method of dressing grindstone and device therefor | |
| JPH0639699A (en) | Groove processing device | |
| US2823492A (en) | Grinding machine and method |