JP6761335B2 - Cutting oil recovery device - Google Patents

Cutting oil recovery device Download PDF

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JP6761335B2
JP6761335B2 JP2016244339A JP2016244339A JP6761335B2 JP 6761335 B2 JP6761335 B2 JP 6761335B2 JP 2016244339 A JP2016244339 A JP 2016244339A JP 2016244339 A JP2016244339 A JP 2016244339A JP 6761335 B2 JP6761335 B2 JP 6761335B2
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cutting oil
tank
cutting
settling tank
receiving
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JP2018094698A (en
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矢部　晃一
晃一 矢部
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Citizen Machinery Co Ltd
Citizen Watch Co Ltd
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Citizen Machinery Co Ltd
Citizen Watch Co Ltd
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Description

本発明は、工作機械に用いられる切削油の回収装置に関する。 The present invention relates to a cutting oil recovery device used in a machine tool.

旋盤等の工作機械には、工具による加工部分に供給した切削油を回収するために、切削油の回収装置が設けられる。切削油の回収装置は、回収した切削油を工作機械で再利用するために、切削油に混入した切削屑を除去する機能を備えた構成とされるのが一般的である。 Machine tools such as lathes are provided with a cutting oil recovery device in order to recover the cutting oil supplied to the machined portion by the tool. The cutting oil recovery device is generally configured to have a function of removing cutting debris mixed in the cutting oil in order to reuse the recovered cutting oil in a machine tool.

例えば特許文献１には、工作機械側から排出された切削油が導入される沈殿槽と、沈殿槽から流出する切削油を回収する回収槽とを備え、切削油に混入する切削屑を沈殿槽に沈殿させることによって切削屑が除去された切削油を回収するようにした切削油の回収装置が記載されている。 For example, Patent Document 1 includes a settling tank into which cutting oil discharged from the machine tool side is introduced and a recovery tank for collecting cutting oil flowing out of the settling tank, and setstles cutting debris mixed in the cutting oil. Described is a cutting oil recovery device that recovers cutting oil from which cutting chips have been removed by precipitating in.

実開平５−２８５７号公報Jikkenhei No. 5-2857

しかし、上記した従来の切削油の回収装置では、工作機械側から導入される切削油の勢いによって沈殿槽の内部で切削屑が切削油とともに強く撹拌され、切削屑を沈殿槽において十分に沈殿させることができず、切削屑が切削油とともに沈殿槽から回収槽に流出して清浄な切削油を回収することができない場合があるという問題が生じていた。 However, in the conventional cutting oil recovery device described above, the cutting fluid is strongly stirred together with the cutting oil inside the settling tank by the force of the cutting oil introduced from the machine tool side, and the cutting debris is sufficiently settled in the settling tank. There has been a problem that the cutting fluid may flow out from the settling tank to the recovery tank together with the cutting oil to recover the clean cutting oil.

本発明は、上記課題を鑑みて成されたものであり、その目的は、清浄な切削油を回収可能な切削油の回収装置を提供することにある。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a cutting oil recovery device capable of recovering clean cutting oil.

本発明の切削油の回収装置は、工作機械側から排出される切削油が導入される沈殿槽と、前記沈殿槽から流出する切削油を回収する回収槽と、を備え、前記切削油に混入する切削屑を前記沈殿槽に沈殿させることによって前記切削屑が除去された前記切削油を回収する切削油の回収装置であって、底壁と側壁とを備えた前記沈殿槽の前記側壁に前記切削油の上澄み油の流出部を設け、該流出部を、前記上澄み油が前記流出部を介して予め定められた所定の流出方向に沿って流出するように配置し、前記切削油の前記沈殿槽への導入経路中に、前記工作機械側から排出された切削油を受けるとともに該切削油を前記沈殿槽に向けて流す受け槽を設け、底壁と側壁とを備えた該受け槽の前記側壁に前記切削油の流出部を設け、該流出部を、前記受け槽から前記沈殿槽に向けて流出する切削油の流出方向が、前記沈殿槽から前記回収槽に向けて流出する切削油の流出方向に対して逆向きとなるように配置し、前記受け槽から前記沈殿槽に向けて流出する切削油の流出方向を、前記工作機械からの切削油の排出方向に対して逆向きとし、互いに逆向きに切削油を排出するように前記工作機械側に設けられた一対の排出孔に対応させて、一対の前記受け槽と、それぞれの前記受け槽に対応した一対の前記沈殿槽とを設けた、ことを特徴とする。 The cutting oil recovery device of the present invention includes a settling tank into which the cutting oil discharged from the machine tool side is introduced and a recovery tank for collecting the cutting oil flowing out of the settling tank, and is mixed with the cutting oil. A cutting oil recovery device for recovering the cutting oil from which the cutting fluid has been removed by precipitating the cutting fluid in the settling tank, and the side wall of the settling tank provided with a bottom wall and a side wall. An outflow portion of the supernatant oil of the cutting oil is provided, and the outflow portion is arranged so that the supernatant oil flows out through the outflow portion along a predetermined outflow direction, and the sedimentation of the cutting oil is provided. The receiving tank provided with a bottom wall and a side wall is provided in the introduction path to the tank to receive the cutting oil discharged from the machine tool side and to flow the cutting oil toward the settling tank. An outflow portion of the cutting oil is provided on the side wall, and the outflow direction of the cutting oil flowing out from the receiving tank toward the settling tank is the outflow direction of the cutting oil flowing out from the settling tank toward the recovery tank. Arranged so as to be opposite to the outflow direction, and the outflow direction of the cutting oil flowing out from the receiving tank toward the settling tank is opposite to the discharging direction of the cutting oil from the machine tool. The pair of receiving tanks and the pair of settling tanks corresponding to the respective receiving tanks are provided so as to correspond to the pair of discharge holes provided on the machine tool side so as to discharge the cutting oil in opposite directions. It is characterized by being provided .

本発明の切削油の回収装置は、上記構成において、前記受け槽から前記沈殿槽に向けて流出する切削油の流出方向を、前記工作機械からの切削油の排出方向に対して逆向きとするのが好ましい。 In the above configuration, the cutting oil recovery device of the present invention sets the outflow direction of the cutting oil flowing out from the receiving tank toward the settling tank in the direction opposite to the discharge direction of the cutting oil from the machine tool. Is preferable.

本発明の切削油の回収装置は、上記構成において、互いに逆向きに切削油を排出するように前記工作機械側に設けられた一対の排出孔に対応させて、一対の前記受け槽と、それぞれの前記受け槽に対応した一対の前記沈殿槽とを設けるのが好ましい。 In the above configuration, the cutting oil recovery device of the present invention has a pair of receiving tanks and a pair of receiving tanks corresponding to a pair of discharge holes provided on the machine tool side so as to discharge cutting oil in opposite directions. It is preferable to provide a pair of the settling tanks corresponding to the receiving tanks.

本発明の切削油の回収装置は、上記構成において、前記回収槽に回収された切削油を前記工作機械に送るポンプを有し、前記ポンプと前記回収槽との間に、切削油を濾過する濾過箱を設けるのが好ましい。 In the above configuration, the cutting oil recovery device of the present invention has a pump that sends the cutting oil recovered in the recovery tank to the machine tool, and filters the cutting oil between the pump and the recovery tank. It is preferable to provide a filtration box.

本発明の切削油の回収装置は、上記構成において、前記受け槽を、前記工作機械側から排出される切削油を受容して前記切削油の流勢を減退させることによって、前記受け槽から前記沈殿槽に向けて流出する切削油の流速を、前記工作機械側から前記受け槽に向けて排出される切削油の流速よりも低減するものとするのが好ましい。 In the above configuration, the cutting oil recovery device of the present invention receives the cutting oil discharged from the machine tool side and reduces the flow of the cutting oil, thereby causing the cutting oil to flow from the receiving tank. It is preferable that the flow velocity of the cutting oil flowing out toward the settling tank is lower than the flow velocity of the cutting oil discharged from the machine tool side toward the receiving tank.

本発明によれば、清浄な切削油を回収可能な切削油の回収装置を提供することができる。 According to the present invention, it is possible to provide a cutting oil recovery device capable of recovering clean cutting oil.

本発明の一実施形態である切削油の回収装置が用いられた工作機械の概略を示す説明図である。It is explanatory drawing which shows the outline of the machine tool which used the cutting oil recovery device which is one Embodiment of this invention. 図１に示す切削油の回収装置を上方から見た説明図である。It is explanatory drawing which looked at the cutting oil recovery device shown in FIG. 1 from above. 図２におけるＡ−Ａ線に沿う断面図である。It is sectional drawing which follows the AA line in FIG.

図１に示す工作機械１はチップコンベア２を備えた旋盤として構成されている。工作機械１は、主軸３と、主軸３に把持されたワーク４を切削加工する工具５とを有している。工具５によるワーク４の加工部分には、供給部６から切削油（クーラント）７が供給される。加工部分に供給された切削油７とワーク４の切削加工により生じた切削屑８は、それぞれ混ざり合って加工部分から下方に落下する。 The machine tool 1 shown in FIG. 1 is configured as a lathe provided with a chip conveyor 2. The machine tool 1 has a spindle 3 and a tool 5 for cutting a work 4 gripped by the spindle 3. Cutting oil (coolant) 7 is supplied from the supply unit 6 to the machined portion of the work 4 by the tool 5. The cutting oil 7 supplied to the machined portion and the cutting debris 8 generated by the cutting process of the work 4 are mixed with each other and fall downward from the machined portion.

チップコンベア２は、ワーク４の切削加工により生じた切削屑８を搬送するベルトコンベア１０を有している。ベルトコンベア１０は、ワーク４の下方において水平方向に延びる受容部１０ａと、受容部１０ａから斜め上方に延びて受容部１０ａよりも上方に配置された排出部１０ｂとを有している。ベルトコンベア１０は、プーリー１１により支持されて受容部１０ａと排出部１０ｂとの間で循環するように回転駆動される無端ベルト１２を備えている。無端ベルト１２は、切削屑８をベルト上に残し、切削油７を下方に通過させる構成となっており、受容部１０ａで受けた切削屑８を排出部１０ｂに搬送し、排出部１０ｂにおいて下方に排出する。排出部１０ｂから排出された切削屑８を回収するために、排出部１０ｂの下方には屑箱１３が配置されている。 The chip conveyor 2 has a belt conveyor 10 that conveys the cutting chips 8 generated by the cutting process of the work 4. The belt conveyor 10 has a receiving portion 10a extending in the horizontal direction below the work 4, and a discharging portion 10b extending obliquely upward from the receiving portion 10a and arranged above the receiving portion 10a. The belt conveyor 10 includes an endless belt 12 that is supported by the pulley 11 and is rotationally driven so as to circulate between the receiving portion 10a and the discharging portion 10b. The endless belt 12 has a configuration in which the cutting waste 8 is left on the belt and the cutting oil 7 is passed downward, and the cutting waste 8 received by the receiving portion 10a is conveyed to the discharging portion 10b and is lowered in the discharging portion 10b. To discharge to. A waste bin 13 is arranged below the discharge unit 10b in order to collect the cutting chips 8 discharged from the discharge unit 10b.

ベルトコンベア１０は、トラフとも呼ばれるケーシング１４により覆われている。ケーシング１４の受容部１０ａの上方側部分はワーク４の加工部分に向けて開口し、排出部１０ｂの下方側部分は屑箱１３に向けて開口している。 The belt conveyor 10 is covered with a casing 14, which is also called a trough. The upper portion of the receiving portion 10a of the casing 14 is opened toward the processed portion of the work 4, and the lower portion of the discharging portion 10b is opened toward the waste bin 13.

ケーシング１４の受容部１０ａの下方側部分はワーク４の加工部分から流れ落ちてきた切削油７を貯留する貯留部１５となっている。ケーシング１４の両側壁１４ａには、それぞれ底壁１４ｂに対して所定距離だけ上方に位置して排出孔１６が設けられ、貯留部１５には所定量の切削油７が貯留されるようになっている。所定量を超えた切削油７は排出孔１６からケーシング１４の外部に排出される。 The lower portion of the receiving portion 10a of the casing 14 is a storage portion 15 for storing the cutting oil 7 that has flowed down from the processed portion of the work 4. Discharge holes 16 are provided on both side walls 14a of the casing 14 at positions above the bottom wall 14b by a predetermined distance, and a predetermined amount of cutting oil 7 is stored in the storage portion 15. There is. The cutting oil 7 exceeding a predetermined amount is discharged from the discharge hole 16 to the outside of the casing 14.

本発明の一実施の形態である切削油の回収装置２０は、ケーシング１４の下方に設けられ、工作機械１の側つまり排出孔１６から排出される切削油７を回収する。 The cutting oil recovery device 20 according to the embodiment of the present invention is provided below the casing 14 and recovers the cutting oil 7 discharged from the side of the machine tool 1, that is, the discharge hole 16.

切削油の回収装置２０は、排出孔１６から排出される切削油７を回収する回収槽２１を備えている。回収槽２１により回収された切削油７は、回収槽２１に連なる流路２２に設けられたポンプ２３により供給部６に送られることで工作機械１に循環される。 The cutting oil recovery device 20 includes a recovery tank 21 that recovers the cutting oil 7 discharged from the discharge hole 16. The cutting oil 7 recovered by the recovery tank 21 is circulated to the machine tool 1 by being sent to the supply unit 6 by a pump 23 provided in the flow path 22 connected to the recovery tank 21.

無端ベルト１２の排出部１０ｂから受容部１０ａに向けて移動する下向き部分は受容部１０ａにおいて貯留部１５に貯留された切削油７の内部を通過する。無端ベルト１２に付着した細かい切削屑８が切削油７に洗い流されて切削油７に混入したり、無端ベルト１２を通過する一部の切削屑８が切削油７に混入したりする。切削油７は、混入する一部の切削屑８とともに排出孔１６から切削油の回収装置２０に向けて排出される。 The downward portion moving from the discharge portion 10b of the endless belt 12 toward the receiving portion 10a passes through the inside of the cutting oil 7 stored in the storage portion 15 in the receiving portion 10a. Fine cutting chips 8 adhering to the endless belt 12 are washed away by the cutting oil 7 and mixed with the cutting oil 7, or some cutting chips 8 passing through the endless belt 12 are mixed with the cutting oil 7. The cutting oil 7 is discharged from the discharge hole 16 toward the cutting oil recovery device 20 together with a part of the cutting chips 8 to be mixed.

排出孔１６から排出された切削油７から切削屑８を除去（分離）するために、切削油の回収装置２０には、それぞれの排出孔１６に対応した一対の沈殿槽２４が、回収槽２１に挿脱自在に係止されて設けられている。図２、図３に示すように、各沈殿槽２４は、それぞれ平面視で矩形の箱状に形成され、対応する排出孔１６の下方に配置されて排出孔１６と回収槽２１との間に位置している。回収槽２１は沈殿槽２４の下方に配置され、回収槽２１と沈殿槽２４との間には所定の空間が介設されている。両沈殿槽２４は、ケーシング１４の軸心を挟んで左右対称に、互いに隔壁２６が接するように配置されている。それぞれの沈殿槽２４には、対応する排出孔１６から排出される切削油７が導入される。沈殿槽２４は、導入された切削油７が貯留されることによって、混入している切削屑８を沈殿させることができる。沈殿槽２４に導入された切削油７の上澄み部分つまり上澄み油を沈殿槽２４から流出させる（溢れ出させる）ことで、切削屑８の混入が防止された清浄な切削油７が回収槽２１で回収される。 In order to remove (separate) the cutting fluid 8 from the cutting oil 7 discharged from the discharge hole 16, the cutting oil recovery device 20 includes a pair of settling tanks 24 corresponding to the respective discharge holes 16 in the recovery tank 21. It is provided so that it can be freely inserted and removed. As shown in FIGS. 2 and 3, each settling tank 24 is formed in a rectangular box shape in a plan view, is arranged below the corresponding discharge hole 16, and is located between the discharge hole 16 and the recovery tank 21. positioned. The recovery tank 21 is arranged below the settling tank 24, and a predetermined space is interposed between the recovery tank 21 and the settling tank 24. Both settling tanks 24 are arranged so that the partition walls 26 are in contact with each other symmetrically with respect to the axial center of the casing 14. Cutting oil 7 discharged from the corresponding discharge holes 16 is introduced into each settling tank 24. The settling tank 24 can settle the mixed cutting chips 8 by storing the introduced cutting oil 7. By causing the supernatant portion of the cutting oil 7 introduced into the settling tank 24, that is, the supernatant oil to flow out (overflow) from the settling tank 24, the clean cutting oil 7 in which the cutting chips 8 are prevented from being mixed is discharged in the recovery tank 21. Will be recovered.

それぞれの排出孔１６と対応する沈殿槽２４との間には、それぞれ、沈殿槽２４に挿脱自在に係止されて受け槽２５が設けられている。各受け槽２５は、それぞれ沈殿槽２４よりも縦横何れの寸法も小さい矩形の箱状に形成され、ケーシング１４の軸心を挟んで左右対称に配置されている。受け槽２５は、排出孔１６から排出される切削油７の沈殿槽２４への導入経路中にあり、工作機械側すなわち排出孔１６から排出される切削油７を受容して切削油７の流勢を減退させ、受け槽２５から沈殿槽２４に向けて流出する切削油７の流速を、排出孔１６から受け槽２５に向けて排出される切削油７の流速よりも低減させて沈殿槽２４に向けて流すようになっている。排出孔１６と沈殿槽２４との間に受け槽２５を設けることで、排出孔１６から排出された切削油７を、受け槽２５によって勢いを弱めてから沈殿槽２４に流入させることができるので、切削油７が勢いよく流入することによって沈殿槽２４の内部で切削屑８が切削油７とともに強く撹拌されることを防止して、切削屑８を沈殿槽２４において効率良く沈殿させることができる。これにより、沈殿槽２４において切削油７と切削屑８との分離性を向上させて、沈殿槽２４から回収槽２１に流出する切削油７への切削屑８の混入を効率よく防止することができる。 A receiving tank 25 is provided between each discharge hole 16 and the corresponding settling tank 24 so as to be freely inserted into and removed from the settling tank 24. Each receiving tank 25 is formed in a rectangular box shape having smaller vertical and horizontal dimensions than the settling tank 24, and is arranged symmetrically with respect to the axial center of the casing 14. The receiving tank 25 is in the introduction path of the cutting oil 7 discharged from the discharge hole 16 into the settling tank 24, receives the cutting oil 7 discharged from the machine tool side, that is, the discharge hole 16, and flows the cutting oil 7. The force is reduced, and the flow velocity of the cutting oil 7 flowing out from the receiving tank 25 toward the settling tank 24 is reduced from the flow velocity of the cutting oil 7 discharged from the discharge hole 16 toward the receiving tank 25 so that the settling tank 24 It is designed to flow toward. By providing the receiving tank 25 between the discharge hole 16 and the settling tank 24, the cutting oil 7 discharged from the discharge hole 16 can be made to flow into the settling tank 24 after the momentum is weakened by the receiving tank 25. It is possible to prevent the cutting fluid 8 from being strongly agitated together with the cutting oil 7 inside the settling tank 24 due to the vigorous inflow of the cutting oil 7, and to efficiently settle the cutting waste 8 in the settling tank 24. .. As a result, the separability between the cutting oil 7 and the cutting waste 8 in the settling tank 24 can be improved, and the cutting waste 8 can be efficiently prevented from being mixed into the cutting oil 7 flowing out from the settling tank 24 to the recovery tank 21. it can.

排出孔１６はケーシング１４の側壁１４ａに設けられているので、排出孔１６から受け槽２５に向けて排出される切削油７の平面視で見た排出方向は、ケーシング１４の長手方向に対して垂直方向であって当該ケーシング１４から外側に向けて離れる方向である。一方の排出孔１６からの切削油７の排出方向と他方の排出孔１６からの切削油７の排出方向は、平面視で見て互いに逆向きである。 Since the discharge hole 16 is provided on the side wall 14a of the casing 14, the discharge direction of the cutting oil 7 discharged from the discharge hole 16 toward the receiving tank 25 in a plan view is the longitudinal direction of the casing 14. It is a vertical direction and is a direction away from the casing 14 toward the outside. The discharge direction of the cutting oil 7 from one discharge hole 16 and the discharge direction of the cutting oil 7 from the other discharge hole 16 are opposite to each other in a plan view.

受け槽２５は、平面視でケーシング１４の軸心側となる内側壁２５ａの底壁２５ｂからの高さが側壁２５ｃと外側壁２５ｄの底壁２５ｂからの高さよりも低く形成されており、内側壁２５ａが設けられた部分が、流入した切削油７を沈殿槽２４に向けて流出させる流出部２５ｅとなっている。流出部２５ｅは、受け槽２５から沈殿槽２４に向けて流出する切削油７の平面視で見た流出方向が、排出孔１６から受け槽２５に向けて排出された切削油７の排出方向に対して逆向きとなるように配置されている。受け槽２５から流出した切削油７は、沈殿槽２４の隔壁２６に隣接する部分に流入する。 The receiving tank 25 is formed so that the height of the inner side wall 25a, which is the axial center side of the casing 14 in a plan view, from the bottom wall 25b is lower than the height of the side wall 25c and the outer wall 25d from the bottom wall 25b. The portion provided with the wall 25a is an outflow portion 25e through which the inflowing cutting oil 7 flows out toward the settling tank 24. In the outflow portion 25e, the outflow direction of the cutting oil 7 flowing out from the receiving tank 25 toward the settling tank 24 in a plan view is the discharge direction of the cutting oil 7 discharged from the discharge hole 16 toward the receiving tank 25. It is arranged so that it faces in the opposite direction. The cutting oil 7 flowing out of the receiving tank 25 flows into the portion of the settling tank 24 adjacent to the partition wall 26.

沈殿槽２４は、平面視でケーシング１４の外側に突出する側となる外側壁２４ａの底壁２４ｂからの高さが一対の側壁２４ｃと隔壁２６の底壁２４ｂからの高さよりも低くなっており、外側壁２４ａが設けられた部分が、導入された切削油７の上澄み油を回収槽２１に向けて流出させる流出部２４ｄとなっている。隔壁２６に隣接する部分において沈殿槽２４に流入した切削油７は、沈殿槽２４を隔壁２６の側から外側壁２４ａの側に向けて沈殿槽２４を横切るように流れながら切削屑８を沈殿させ、流出部２４ｄにおいて上澄み油が回収槽２１に向けて流出する。沈殿槽２４から回収槽２１に向けて流出する切削油７の平面視で見た沈殿槽２４からの流出方向は、受け槽２５から沈殿槽２４に向けて流出する切削油７の流出方向に対して逆向きである。 In the settling tank 24, the height from the bottom wall 24b of the outer wall 24a, which is the side protruding to the outside of the casing 14 in a plan view, is lower than the height from the pair of side walls 24c and the bottom wall 24b of the partition wall 26. The portion provided with the outer wall 24a is an outflow portion 24d for flowing out the supernatant oil of the introduced cutting oil 7 toward the recovery tank 21. The cutting oil 7 that has flowed into the settling tank 24 at the portion adjacent to the partition wall 26 precipitates the cutting chips 8 while flowing across the settling tank 24 from the side of the partition wall 26 toward the side of the outer wall 24a. , The supernatant oil flows out toward the recovery tank 21 in the outflow portion 24d. The outflow direction of the cutting oil 7 flowing out from the settling tank 24 toward the recovery tank 21 in a plan view is the outflow direction of the cutting oil 7 flowing out from the receiving tank 25 toward the settling tank 24. And the opposite direction.

受け槽２５の流出部２５ｅを、受け槽２５から沈殿槽２４に向けて流出する切削油７の平面視で見た流出方向が、沈殿槽２４から回収槽２１に向けて流出する切削油７の平面視で見た沈殿槽２４からの流出方向に対して逆向きとなるように配置するようにしたので、排出孔１６から排出された切削油７が回収槽２１に回収されるまでの間で切削油７が流れる経路を、特に、沈殿槽２４の部分において受け槽２５を設けない場合に比べて大きくすることができる。よって、切削屑８を沈殿槽２４においてさらに効率良く沈殿させて、さらに清浄な切削油７を回収槽２１で回収することができる。 The outflow direction of the cutting oil 7 in which the outflow portion 25e of the receiving tank 25 is viewed from the receiving tank 25 toward the settling tank 24 in a plan view is the cutting oil 7 flowing out from the settling tank 24 toward the recovery tank 21. Since the arrangement is made so as to be opposite to the outflow direction from the settling tank 24 when viewed from a plan view, the cutting oil 7 discharged from the discharge hole 16 is collected in the recovery tank 21. The path through which the cutting oil 7 flows can be made larger than in the case where the receiving tank 25 is not provided, especially in the portion of the settling tank 24. Therefore, the cutting chips 8 can be more efficiently settled in the settling tank 24, and the cleaner cutting oil 7 can be recovered in the recovery tank 21.

受け槽２５から沈殿槽２４に向けて流出する切削油７の平面視で見た流出方向を、排出孔１６からの切削油７の排出方向に対して平面視で逆向きとした場合には、工作機械１側から導入される切削油７の勢いをさらに効果的に低下させることができる。よって、沈殿槽２４の内部で切削屑８が切削油７とともに強く撹拌されることをさらに抑制して、沈殿槽２４において切削油７と切削屑８とをさらに確実に分離させることができる。 When the outflow direction of the cutting oil 7 flowing out from the receiving tank 25 toward the settling tank 24 in a plan view is opposite to the discharge direction of the cutting oil 7 from the discharge hole 16 in a plan view, The momentum of the cutting oil 7 introduced from the machine tool 1 side can be further effectively reduced. Therefore, it is possible to further suppress the strong agitation of the cutting fluid 8 together with the cutting oil 7 inside the settling tank 24, and to more reliably separate the cutting oil 7 and the cutting waste 8 in the settling tank 24.

図２、図３中において右側に配置される沈殿槽２４の濾過壁２７から流出する切削油７は、両沈殿槽２４の下方を流れて、図２、図３中において左側に配置される沈殿槽２４の濾過壁２７から流出する切削油７に合流する。合流した切削油７は回収槽２１においても切削屑８を沈殿させながら、回収槽２１に連なる流路２２を介してポンプ２３に向けて流される。図２、図３中において右側に配置される沈殿槽２４の濾過壁２７から流出する切削油７は、両沈殿槽２４の下方を流れることによって回収槽２１における沈殿区間が長くなるので、沈殿効率を向上させることができる。 The cutting oil 7 flowing out from the filtration wall 27 of the settling tank 24 arranged on the right side in FIGS. 2 and 3 flows below both settling tanks 24 and is settled on the left side in FIGS. 2 and 3. It joins the cutting oil 7 flowing out from the filtration wall 27 of the tank 24. The merged cutting oil 7 is also allowed to flow toward the pump 23 through the flow path 22 connected to the recovery tank 21 while precipitating the cutting chips 8 in the recovery tank 21. The cutting oil 7 flowing out from the filtration wall 27 of the settling tank 24 arranged on the right side in FIGS. 2 and 3 flows below both settling tanks 24, so that the settling section in the recovery tank 21 becomes long, so that the settling efficiency Can be improved.

回収槽２１に回収された切削油７は、メッシュ材により箱状フィルタに構成された濾過箱３０に開口３０ａから通され、当該濾過箱３０を通過することにより、さらに細かい切削屑８を取り除くように濾過される。濾過箱３０を設けることで、工作機械１に循環される切削油７の清浄度合いをさらに高めることができる。濾過箱３０を通過した切削油７は、Ｕ字状に曲がる流路２２を通ってポンプ２３に達し、当該ポンプ２３により供給部６に送られて再利用される。濾過箱３０を設けない構成とすることもできる。 The cutting oil 7 recovered in the recovery tank 21 is passed through an opening 30a through a filtration box 30 formed of a box-shaped filter by a mesh material, and passes through the filtration box 30 to remove finer cutting chips 8. Is filtered to. By providing the filtration box 30, the degree of cleanliness of the cutting oil 7 circulated in the machine tool 1 can be further improved. The cutting oil 7 that has passed through the filtration box 30 reaches the pump 23 through the flow path 22 that bends in a U shape, is sent to the supply unit 6 by the pump 23, and is reused. The filter box 30 may not be provided.

本発明は前記実施の形態に限定されるものではなく、その要旨を逸脱しない範囲で種々
変更可能である。 The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist thereof.

前記実施の形態では、ケーシング１４の左右の側壁１４ａに一対の排出孔１６を設けるとともに、ケーシング１４の軸心を挟んで左右対称に一対の沈殿槽２４及び受け槽２５を設けるようにしているが、排出孔１６、沈殿槽２４及び受け槽２５をそれぞれ１つのみ設けた構成とすることもできる。 In the above embodiment, a pair of discharge holes 16 are provided on the left and right side walls 14a of the casing 14, and a pair of settling tanks 24 and a receiving tank 25 are provided symmetrically with the axial center of the casing 14 in between. , Only one discharge hole 16, one settling tank 24, and one receiving tank 25 may be provided.

受け槽２５の内側壁２５ａをメッシュ材で形成し、切削油７を、内側壁２５ａからメッシュ材を介して濾過流出させるとともに、内側壁２５ａをオーバーフローして乗り越えさせて沈殿槽２４に向けて流出させる構成とすることもできる。 The inner side wall 25a of the receiving tank 25 is formed of a mesh material, and the cutting oil 7 is filtered out from the inner side wall 25a through the mesh material, and the inner side wall 25a overflows and gets over the inner side wall 25a to flow out toward the settling tank 24. It can also be configured to allow.

図３に示すように、沈殿槽２４の外側壁２４ａの上端から外側に向けてフランジ状に延びる濾過壁２７は、メッシュ材で形成することができる。また、隔壁２６の上側部分をメッシュ材で形成し、一対の沈殿槽２４の間で当該メッシュ材を介して切削油７が行き来できるように構成してもよい。 As shown in FIG. 3, the filtration wall 27 extending in a flange shape from the upper end of the outer wall 24a of the settling tank 24 toward the outside can be formed of a mesh material. Further, the upper portion of the partition wall 26 may be formed of a mesh material so that the cutting oil 7 can flow between the pair of settling tanks 24 via the mesh material.

図３に示すように、受け槽２５、沈殿槽２４及び濾過箱３０を、それぞれ開閉可能な受け槽用蓋３１、沈殿槽用蓋３２、濾過箱用蓋３３で覆う構成としてもよい。この場合、蓋３１〜３２を開け、受け槽２５、沈殿槽２４及び濾過箱３０を切削油の回収装置２０から取り外し可能な構成とすることもできる。 As shown in FIG. 3, the receiving tank 25, the settling tank 24, and the filtration box 30 may be covered with an openable / closable receiving tank lid 31, a settling tank lid 32, and a filter box lid 33, respectively. In this case, the lids 31 to 32 can be opened, and the receiving tank 25, the settling tank 24, and the filtration box 30 can be made removable from the cutting oil recovery device 20.

１ 工作機械
２ チップコンベア
３ 主軸
４ ワーク
５ 工具
６ 供給部
７ 切削油
８ 切削屑
１０ ベルトコンベア
１０ａ 受容部
１０ｂ 排出部
１１ プーリー
１２ 無端ベルト
１３ 屑箱
１４ ケーシング
１４ａ 側壁
１４ｂ 底壁
１５ 貯留部
１６ 排出孔
２０ 切削油の回収装置
２１ 回収槽
２２ 流路
２３ ポンプ
２４ 沈殿槽
２４ａ 外側壁
２４ｂ 底壁
２４ｃ 側壁
２４ｄ 流出部
２５ 受け槽
２５ａ 内側壁
２５ｂ 底壁
２５ｃ 側壁
２５ｄ 外側壁
２５ｅ 流出部
２６ 隔壁
２７ 濾過壁
３０ 濾過箱
３０ａ 開口
３１ 受け槽用蓋
３２ 沈殿槽用蓋
３３ 濾過箱用蓋 1 Machine tool 2 Chip conveyor 3 Main shaft 4 Work 5 Tool 6 Supply part 7 Cutting oil 8 Cutting fluid 10 Belt conveyor 10a Receiving part 10b Discharge part 11 Pulley 12 Endless belt 13 Scrap box 14 Casing 14a Side wall 14b Bottom wall 15 Storage part 16 Discharge Hole 20 Cutting oil recovery device 21 Recovery tank 22 Flow path 23 Pump 24 Settlement tank 24a Outer side wall 24b Bottom wall 24c Side wall 24d Outflow part 25 Receiving tank 25a Inner side wall 25b Bottom wall 25c Side wall 25d Outer side wall 25e Outflow part 26 Partition 27 Filtration Wall 30 Filtration box 30a Opening 31 Receiving tank lid 32 Sedimentation tank lid 33 Filtration box lid

Claims (3)

工作機械側から排出される切削油が導入される沈殿槽と、前記沈殿槽から流出する切削油を回収する回収槽と、を備え、前記切削油に混入する切削屑を前記沈殿槽に沈殿させることによって前記切削屑が除去された前記切削油を回収する切削油の回収装置であって、
底壁と側壁とを備えた前記沈殿槽の前記側壁に前記切削油の上澄み油の流出部を設け、
該流出部を、前記上澄み油が前記流出部を介して予め定められた所定の流出方向に沿って流出するように配置し、
前記切削油の前記沈殿槽への導入経路中に、前記工作機械側から排出された切削油を受けるとともに該切削油を前記沈殿槽に向けて流す受け槽を設け、
底壁と側壁とを備えた該受け槽の前記側壁に前記切削油の流出部を設け、
該流出部を、前記受け槽から前記沈殿槽に向けて流出する切削油の流出方向が、前記沈殿槽から前記回収槽に向けて流出する切削油の流出方向に対して逆向きとなるように配置し、
前記受け槽から前記沈殿槽に向けて流出する切削油の流出方向を、前記工作機械からの切削油の排出方向に対して逆向きとし、
互いに逆向きに切削油を排出するように前記工作機械側に設けられた一対の排出孔に対応させて、一対の前記受け槽と、それぞれの前記受け槽に対応した一対の前記沈殿槽とを設けた、ことを特徴とする切削油の回収装置。 A settling tank into which cutting oil discharged from the machine tool side is introduced and a recovery tank for collecting cutting oil flowing out of the settling tank are provided, and cutting debris mixed in the cutting oil is settled in the settling tank. It is a cutting oil recovery device that recovers the cutting oil from which the cutting chips have been removed.
An outflow portion of the supernatant oil of the cutting oil is provided on the side wall of the settling tank provided with the bottom wall and the side wall.
The spill portion is arranged so that the supernatant oil flows out through the spill portion along a predetermined outflow direction.
In the path of introducing the cutting oil into the settling tank, a receiving tank is provided to receive the cutting oil discharged from the machine tool side and to flow the cutting oil toward the settling tank.
An outflow portion of the cutting oil is provided on the side wall of the receiving tank provided with the bottom wall and the side wall.
The outflow direction of the cutting oil flowing out from the receiving tank toward the settling tank in the outflow portion is opposite to the outflow direction of the cutting oil flowing out from the settling tank toward the recovery tank. arrangement and,
The outflow direction of the cutting oil flowing out from the receiving tank toward the settling tank is set to be opposite to the discharge direction of the cutting oil from the machine tool.
The pair of receiving tanks and the pair of settling tanks corresponding to the respective receiving tanks are provided so as to correspond to the pair of discharge holes provided on the machine tool side so as to discharge the cutting oil in opposite directions. provided with cutting oil recovery apparatus, characterized in that. 前記回収槽に回収された切削油を前記工作機械に送るポンプを有し、前記ポンプと前記回収槽との間に、切削油を濾過する濾過箱を設けた、請求項１に記載の切削油の回収装置。 Comprises a pump to send the recovered cutting oil to the collection tank on the machine tool, between the pump and the collection tank, provided with a filtering box for filtering the cutting oil, cutting oil according to claim 1 Recovery device. 前記受け槽を、前記工作機械側から排出される切削油を受容して前記切削油の流勢を減退させることによって、前記受け槽から前記沈殿槽に向けて流出する切削油の流速を、前記工作機械側から前記受け槽に向けて排出される切削油の流速よりも低減するものとした、請求項１または２に記載の切削油の回収装置。 By receiving the cutting oil discharged from the machine tool side and reducing the flow of the cutting oil, the flow rate of the cutting oil flowing out from the receiving tank toward the settling tank is adjusted. The cutting oil recovery device according to claim 1 or 2 , wherein the flow velocity of the cutting oil discharged from the machine tool side toward the receiving tank is reduced.
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