JPH077842U - Internal grinding machine - Google Patents
Internal grinding machineInfo
- Publication number
- JPH077842U JPH077842U JP3609293U JP3609293U JPH077842U JP H077842 U JPH077842 U JP H077842U JP 3609293 U JP3609293 U JP 3609293U JP 3609293 U JP3609293 U JP 3609293U JP H077842 U JPH077842 U JP H077842U
- Authority
- JP
- Japan
- Prior art keywords
- grinding
- flow rate
- workpiece
- grindstone
- grinding fluid
- 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
Landscapes
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
(57)【要約】
【目的】 加工時間を長くすることなく、工作物の横穴
の影響による真円度、真直度の低下を防止する。
【構成】 横穴を有する工作物23を加工する場合、粗
研削時には、制御装置30からの粗研削用開信号37に
よって電磁弁35のみを開き、流量調整弁33によって
設定された粗研削時用の流量の研削液を工作物23の内
側に供給する。一方、仕上げ研削時には、制御装置30
からの仕上げ用開信号38によって電磁弁36のみを開
き、流量調整弁34によって粗研削時用の流量よりも少
なく設定された仕上げ研削時用の流量の研削液を工作物
23の内側に供給する。
(57) [Summary] [Purpose] To prevent the reduction of roundness and straightness due to the influence of the lateral hole of the workpiece without increasing the machining time. When a workpiece 23 having a lateral hole is machined, only the solenoid valve 35 is opened by a rough grinding open signal 37 from the control device 30 during rough grinding, and the rough grinding grinding signal set by the flow rate adjusting valve 33 is used. A flow rate of grinding fluid is supplied to the inside of the workpiece 23. On the other hand, during finish grinding, the control device 30
Only the solenoid valve 36 is opened by the finishing open signal 38 from the above, and the grinding fluid is supplied to the inside of the workpiece 23 at a flow rate for finish grinding set to be smaller than the flow rate for rough grinding by the flow rate adjusting valve 34. ..
Description
【0001】[0001]
本考案は、工作物の内面を砥石によって研削する内面研削盤に関する。 The present invention relates to an inner surface grinder that grinds an inner surface of a workpiece with a grindstone.
【0002】[0002]
研削加工を行う装置の一つに内面研削盤がある。この内面研削盤は、図2に示 すように、工作物51と砥石52の両方を回転させ、工作物51の内側を、工作 物の軸線方向に工作物の幅よりも狭い幅の砥石52をトラバース運動させて、工 作物51の内面を研削加工するものである。 An internal grinding machine is one of the devices that perform grinding. As shown in FIG. 2, this inner surface grinding machine rotates both the workpiece 51 and the grindstone 52 so that the inner side of the workpiece 51 is narrower than the width of the workpiece 52 in the axial direction of the workpiece. Is traversed to grind the inner surface of the work piece 51.
【0003】 ところで、工作物の内径に比べて加工幅が長く、かつ横穴が開いている工作物 の場合、横穴部で研削抵抗が低下するため、横穴部の周辺が余分に削られ、横穴 部で真円度が悪くなったり、真直度が悪くなったりする。 そこで、従来は、このような場合には、工作物の回転を遅くして、横穴の影響 を軽減している。By the way, in the case of a workpiece in which the machining width is longer than the inner diameter of the workpiece and the lateral hole is opened, the grinding resistance is reduced in the lateral hole portion, so that the periphery of the lateral hole portion is additionally shaved and the lateral hole portion is cut. The roundness may be poor and the straightness may be poor. Therefore, conventionally, in such a case, the rotation of the workpiece is slowed to reduce the influence of the lateral hole.
【0004】[0004]
しかしながら、工作物の回転を遅くした場合には、工作物一回転当たりの切り 込み量を同じにすると、遅くなった分だけ加工能率が低下し、加工時間が長くな るという問題点がある。 However, when the rotation of the workpiece is slowed down, if the cutting depth per one rotation of the workpiece is made the same, the machining efficiency is reduced and the machining time becomes longer.
【0005】 また、特に図2に示すように、小径工作物の場合、加工幅dが長いため、砥石 シャンク54が長くなり、砥石先端での剛性が小さくなり、粗研削時に必要な研 削液流量を確保すると、図3に示すように、加工時に研削液55で砥石52が工 作物51に押し付けられて、砥石52の喰い込みが深くなってしまい、真円度、 真直度の向上を十分に図ることができなかった。Further, as shown in FIG. 2, in particular, in the case of a small-diameter workpiece, since the machining width d is long, the grindstone shank 54 becomes long, the rigidity at the tip of the grindstone becomes small, and the grinding fluid required for rough grinding is If the flow rate is secured, as shown in FIG. 3, the grindstone 52 is pressed against the work piece 51 by the grinding fluid 55 during machining, and the bite of the grindstone 52 becomes deeper, so that the roundness and straightness are sufficiently improved. I couldn't.
【0006】 そこで本考案の目的は、加工時間を長くすることなく、工作物の横穴の影響に よる真円度、真直度の低下を防止できるようにした内面研削盤を提供することに ある。Therefore, an object of the present invention is to provide an inner surface grinding machine capable of preventing a decrease in roundness and straightness due to an influence of a lateral hole of a workpiece without increasing a machining time.
【0007】[0007]
本考案では、工作物を回転可能に保持する保持手段と、工作物の内面を研削す るための砥石と、この砥石を回転させる砥石回転手段と、工作物の研削時に研削 液を供給する研削液供給手段と、粗研削時における研削液の流量に比べて仕上げ 研削時における研削液の流量が少なくなるように、研削液供給手段によって供給 される研削液の流量を切り換える流量切換手段とを、内面研削盤に具備させて、 前記目的を達成する。 In the present invention, a holding means for rotatably holding a workpiece, a grindstone for grinding the inner surface of the workpiece, a grindstone rotating means for rotating the grindstone, and a grinding fluid for supplying a grinding fluid when grinding the workpiece. The liquid supply means and the flow rate switching means for switching the flow rate of the grinding fluid supplied by the grinding fluid supply means so that the flow rate of the grinding fluid during finish grinding becomes smaller than the flow rate of the grinding fluid during rough grinding. It is provided in an inner surface grinding machine to achieve the above object.
【0008】[0008]
この内面研削盤では、流量切換手段によって、粗研削時における研削液の流量 に比べて仕上げ研削時における研削液の流量が少なくなるように、研削液供給手 段によって供給される研削液の流量が切り換えられる。 In this internal grinding machine, the flow rate switching means controls the flow rate of the grinding fluid supplied by the grinding fluid supply means so that the flow rate of the grinding fluid during finish grinding becomes smaller than the flow rate of the grinding fluid during rough grinding. Can be switched.
【0009】 仕上げ研削時における研削液の流量を少なくすることで、砥石の喰い込みが抑 えられる。By reducing the flow rate of the grinding fluid during finish grinding, bite of the grindstone can be suppressed.
【0010】[0010]
以下、本考案の内面研削盤における一実施例について図面を参照して詳細に説 明する。 図1は本考案の一実施例の内面研削盤の構成を示す説明図である。 An embodiment of the inner surface grinding machine of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory view showing the structure of an inner surface grinding machine according to an embodiment of the present invention.
【0011】 本実施例の内面研削盤は、図示しないモータによって回転される砥石軸11を 有し、この砥石軸11の先端部に、砥石シャンク12を介して砥石13が取り付 けられている。また、砥石軸11は図示しない他のモータによって軸方向に前後 動するようになっている。The inner surface grinding machine of the present embodiment has a grindstone shaft 11 rotated by a motor (not shown), and a grindstone 13 is attached to a tip end portion of the grindstone shaft 11 via a grindstone shank 12. . Further, the grindstone shaft 11 is adapted to be moved back and forth in the axial direction by another motor (not shown).
【0012】 また、内面研削盤は主軸15を有し、この主軸15はプーリ17、ベルト18 およびプーリ19を介して、モータ16によって回転されるようになっている。 また、主軸15は、図示しない他のモータによって軸方向に直交する方向に前後 動するようになっている。また、主軸15の先端部には、スペーサ21および工 作物固定爪22を介して、円筒状の工作物23が固定されるようになっている。 この工作物23には横穴が形成されているものもある。The inner surface grinding machine has a main shaft 15, and the main shaft 15 is rotated by a motor 16 via a pulley 17, a belt 18 and a pulley 19. Further, the main shaft 15 is moved back and forth in a direction orthogonal to the axial direction by another motor (not shown). A cylindrical work piece 23 is fixed to the tip of the main shaft 15 via a spacer 21 and a work piece fixing claw 22. Some of the workpieces 23 have lateral holes formed therein.
【0013】 また、主軸15の中心部には図示しない研削液通路が形成されており、この研 削液通路は、主軸15の後端に設けられた回転継手25の研削液供給口26に通 じている。 また、内面研削盤は、研削液タンク27と、この研削液タンク27内の研削液 を研削液供給口26に供給するためのポンプ28と、内面研削盤の全体を制御す る制御装置30とを有している。Further, a grinding fluid passage (not shown) is formed in the center of the spindle 15, and the grinding fluid passage communicates with a grinding fluid supply port 26 of a rotary joint 25 provided at the rear end of the spindle 15. It is the same. The inner surface grinding machine includes a grinding fluid tank 27, a pump 28 for supplying the grinding fluid in the grinding fluid tank 27 to the grinding fluid supply port 26, and a control device 30 for controlling the entire inner surface grinding machine. have.
【0014】 本実施例では、ポンプ28と研削液供給口26の間には、2系統の研削液の供 給ライン31、32が設けられている。各供給ライン31、32には、それぞれ 、流量調整弁33、34と電磁弁35、36が設けられている。制御装置30は 、切り込み速度指令に対応して、粗研削時には粗研削用開信号37を電磁弁35 に送出し、仕上げ研削時には仕上げ用開信号38を電磁弁36に送出するように なっている。電磁弁35は制御装置30からの粗研削用開信号37を入力したと きに開き、他のときは閉じるようになっている。In the present embodiment, two lines of grinding liquid supply lines 31 and 32 are provided between the pump 28 and the grinding liquid supply port 26. The supply lines 31 and 32 are provided with flow rate adjusting valves 33 and 34 and electromagnetic valves 35 and 36, respectively. In response to the cutting speed command, the control device 30 sends a rough grinding open signal 37 to the solenoid valve 35 during rough grinding, and sends a finish open signal 38 to the solenoid valve 36 during finish grinding. . The solenoid valve 35 is opened when an open signal 37 for rough grinding is input from the control device 30, and is closed at other times.
【0015】 また、電磁弁36は制御装置30からの仕上げ用開信号38を入力したときに 開き、他のときは閉じるようになっている。また、流量調整弁33には粗研削時 用の流量が設定され、流量調整弁34には粗研削時用の流量よりも少ない仕上げ 研削時用の流量が設定されている。The solenoid valve 36 is opened when the finishing open signal 38 from the control device 30 is input, and is closed at other times. Further, the flow rate adjusting valve 33 is set to a flow rate for rough grinding, and the flow rate adjusting valve 34 is set to a flow rate for finish grinding which is smaller than the flow rate for rough grinding.
【0016】 このような構成の本実施例の内面研削盤では、主軸15によって工作物23を 回転させると共に、砥石軸11によって砥石13を回転させ、砥石13をトラバ ース運動させて、工作物23の内面を研削加工する。 ここで、横穴を有する工作物23を加工する場合には、粗研削時には、制御装 置30からの粗研削用開信号37によって電磁弁35のみを開き、流量調整弁3 3によって設定された粗研削時用の流量の研削液を工作物23の内側に供給する 。一方、仕上げ研削時には、制御装置30からの仕上げ用開信号38によって電 磁弁36のみを開き、流量調整弁34によって設定された仕上げ研削時用の流量 の研削液を工作物23の内側に供給する。In the internal grinding machine of this embodiment having such a configuration, the work piece 23 is rotated by the main shaft 15, the grindstone 13 is rotated by the grindstone shaft 11, and the grindstone 13 is traversed to move the work piece. The inner surface of 23 is ground. Here, when the workpiece 23 having a lateral hole is machined, only the solenoid valve 35 is opened by the rough grinding open signal 37 from the control device 30 during the rough grinding, and the rough flow control valve 33 sets the rough grinding. A flow rate of grinding fluid for grinding is supplied to the inside of the workpiece 23. On the other hand, at the time of finish grinding, only the electromagnetic valve 36 is opened by the finish opening signal 38 from the control device 30, and the flow rate of the grinding fluid for finish grinding set by the flow rate adjusting valve 34 is supplied to the inside of the workpiece 23. To do.
【0017】 このように、仕上げ研削時に研削液の流量を少なくすることにより、研削液に よる砥石13の工作物23への喰い込みが抑えられ、横穴を有する工作物の真円 度、真直度を向上することができる。 なお、単純に全工程での研削液流量を少なくしてしまうと、砥石の冷却性、潤 滑性が損なわれるので砥石の磨耗が進み砥石の寿命が短くなってしまう。本実施 例では、加工負荷の少ない仕上げ研削時のみ流量を少なくすることにより、真円 度、真直度の加工精度の向上ばかりでなく、砥石寿命を従来と同程度に保つこと ができる。As described above, by reducing the flow rate of the grinding fluid during the finish grinding, the grinding fluid is prevented from intruding the grindstone 13 into the work piece 23, and the roundness and straightness of the work piece having the lateral hole are reduced. Can be improved. If the flow rate of the grinding fluid is simply reduced in all the steps, the cooling performance and lubricity of the grindstone are impaired, and the grindstone wears and the life of the grindstone is shortened. In this embodiment, by reducing the flow rate only during the finish grinding with a small processing load, it is possible to not only improve the machining accuracy of roundness and straightness but also maintain the life of the grindstone to the same level as before.
【0018】 また、工作物の回転を遅くしたりする必要がないため、従来に比べて加工時間 を短縮することができる。 なお、上記実施例では、2つの供給ライン31、32の切り換えによって粗研 削時の流量と仕上げ研削時の流量とを切り換えるようにしたが、流量の多い粗研 削時には両方の供給ラインの電磁弁を開き、流量の少ない仕上げ研削時には一方 の供給ラインの電磁弁のみを開くようにしても良い。Further, since it is not necessary to slow down the rotation of the workpiece, the processing time can be shortened as compared with the conventional case. In the above-described embodiment, the flow rate during rough grinding and the flow rate during finish grinding are switched by switching between the two supply lines 31 and 32. The valve may be opened so that only the solenoid valve of one of the supply lines may be opened during finish grinding with a small flow rate.
【0019】 さらに、流量の少ない仕上げ研削時用の供給ラインの電磁弁を無くし、ポンプ が作動している間には常に仕上げ研削時に必要な流量の研削液を供給し、粗研削 時には電磁弁を開き、粗研削時に必要な流量の研削液を供給するようにしても良 い。Furthermore, the solenoid valve in the supply line for finish grinding with a small flow rate is eliminated, and while the pump is operating, the flow rate of grinding liquid required for finish grinding is always supplied, and the solenoid valve is used for rough grinding. It is also possible to open and supply the required amount of grinding fluid during rough grinding.
【0020】[0020]
以上説明したように本考案によれば、粗研削時における研削液の流量に比べて 仕上げ研削時における研削液の流量が少なくなるように、研削液の流量を切り換 えるようにしたので、仕上げ研削時における砥石の喰い込みが抑えられ、加工時 間を長くすることなく、工作物の横穴の影響による真円度、真直度の低下を防止 することができるという効果がある。 As described above, according to the present invention, the flow rate of the grinding fluid is switched so that the flow rate of the grinding fluid during the finish grinding becomes smaller than the flow rate of the grinding fluid during the rough grinding. There is an effect that the bite of the grindstone is suppressed during grinding, and the roundness and straightness due to the influence of the lateral hole of the workpiece can be prevented from being lowered without increasing the processing time.
【図1】本考案の一実施例の内面研削盤の構成を示す説
明図である。FIG. 1 is an explanatory diagram showing a configuration of an inner surface grinding machine according to an embodiment of the present invention.
【図2】従来の内面研削盤による加工を説明するための
説明図である。FIG. 2 is an explanatory diagram for explaining processing by a conventional inner surface grinding machine.
【図3】研削液によって砥石が工作物に押し付けられる
様子を示す説明図である。FIG. 3 is an explanatory diagram showing a state in which a grindstone is pressed against a workpiece by a grinding liquid.
11 砥石軸 13 砥石 15 主軸 23 工作物 27 研削液タンク 28 ポンプ 30 制御装置 31、32 供給ライン 33、34 流量調整弁 35、36 電磁弁 11 Grindstone Axis 13 Grindstone 15 Spindle 23 Workpiece 27 Grinding Fluid Tank 28 Pump 30 Control Device 31, 32 Supply Line 33, 34 Flow Control Valve 35, 36 Solenoid Valve
Claims (1)
と、 この保持手段に保持された工作物の内面を研削するため
の砥石と、 この砥石を回転させる砥石回転手段と、 工作物の研削時に研削液を供給する研削液供給手段と、 粗研削時における研削液の流量に比べて仕上げ研削時に
おける研削液の流量が少なくなるように、前記研削液供
給手段によって供給される研削液の流量を切り換える流
量切換手段とを具備することを特徴とする内面研削盤。1. A holding means for rotatably holding a workpiece, a grindstone for grinding an inner surface of the workpiece held by the holding means, a grindstone rotating means for rotating the grindstone, and a grinding of the workpiece. The grinding fluid supply means for supplying the grinding fluid at times, and the flow rate of the grinding fluid supplied by the grinding fluid supply means so that the flow rate of the grinding fluid during the finish grinding becomes smaller than the flow rate of the grinding fluid during the rough grinding. An inner surface grinding machine, characterized by comprising:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1993036092U JP2602514Y2 (en) | 1993-06-30 | 1993-06-30 | Internal grinding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1993036092U JP2602514Y2 (en) | 1993-06-30 | 1993-06-30 | Internal grinding machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH077842U true JPH077842U (en) | 1995-02-03 |
JP2602514Y2 JP2602514Y2 (en) | 2000-01-17 |
Family
ID=12460117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1993036092U Expired - Lifetime JP2602514Y2 (en) | 1993-06-30 | 1993-06-30 | Internal grinding machine |
Country Status (1)
Country | Link |
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JP (1) | JP2602514Y2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002505620A (en) * | 1996-09-03 | 2002-02-19 | ユノーヴァ アイピー コーポレイション | Variable volume coolant system |
JP2010188501A (en) * | 2009-02-20 | 2010-09-02 | Nsk Ltd | Method and apparatus for grinding annular workpiece |
JP2013208704A (en) * | 2013-05-21 | 2013-10-10 | Nsk Ltd | Apparatus for grinding circular workpiece |
JP2018103287A (en) * | 2016-12-26 | 2018-07-05 | トーヨーエイテック株式会社 | Inner face grinding method of work-piece and grinding apparatus |
-
1993
- 1993-06-30 JP JP1993036092U patent/JP2602514Y2/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002505620A (en) * | 1996-09-03 | 2002-02-19 | ユノーヴァ アイピー コーポレイション | Variable volume coolant system |
JP2010188501A (en) * | 2009-02-20 | 2010-09-02 | Nsk Ltd | Method and apparatus for grinding annular workpiece |
JP2013208704A (en) * | 2013-05-21 | 2013-10-10 | Nsk Ltd | Apparatus for grinding circular workpiece |
JP2018103287A (en) * | 2016-12-26 | 2018-07-05 | トーヨーエイテック株式会社 | Inner face grinding method of work-piece and grinding apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP2602514Y2 (en) | 2000-01-17 |
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