WO2023021698A1 - クーラント処理装置 - Google Patents
クーラント処理装置 Download PDFInfo
- Publication number
- WO2023021698A1 WO2023021698A1 PCT/JP2021/030631 JP2021030631W WO2023021698A1 WO 2023021698 A1 WO2023021698 A1 WO 2023021698A1 JP 2021030631 W JP2021030631 W JP 2021030631W WO 2023021698 A1 WO2023021698 A1 WO 2023021698A1
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- WO
- WIPO (PCT)
- Prior art keywords
- coolant
- flow path
- tank
- pump
- filter
- Prior art date
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- 239000002826 coolant Substances 0.000 title claims abstract description 315
- 238000003754 machining Methods 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims description 18
- 230000000630 rising effect Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Definitions
- This invention relates to a coolant processing device.
- Patent Document 1 discloses a dirty tank for storing used dirty coolant, a first pump for pumping the dirty coolant in the dirty tank toward the clean tank, and a dirty coolant tank.
- a coolant supply device is known that includes a filter provided on a coolant flow path from a tank to a clean tank, and a second pump for pumping the regenerated coolant in the clean tank toward the machine side.
- an object of the present invention is to solve the above problems, and to provide a coolant processing apparatus capable of appropriately controlling the coolant discharge pressure.
- a coolant processing apparatus includes a first flow path through which coolant flows, a first filter provided on a path of the first flow path, a coolant from the first flow path branched from the first flow path, and a A second flow path through which the coolant flows, a first coolant discharge portion that discharges coolant toward the machining point of the workpiece, and a first coolant discharge portion that is provided on the path of the second flow channel and sends out coolant toward the first coolant discharge portion 1 pump, a third flow path branched from the first flow path and through which the coolant from the first flow path flows, a second coolant discharge portion supplied with the coolant from the third flow path and discharging the coolant; and a second filter that is cleaned by the coolant discharged from the second coolant discharge part.
- the coolant that passes through the first filter and flows through the first flow path is supplied to the first coolant discharge portion through the second flow path, whereby the first coolant Clean coolant is discharged from the discharge part toward the machining point of the workpiece, passes through the first filter, and flows through the first flow path, and is supplied to the second coolant discharge part through the third flow path. , clean coolant is discharged from the second coolant discharge portion toward the second filter.
- the first pump provided on the path of the second flow path the coolant flowing through the first flow path is preferentially directed to the first coolant discharge portion through the second flow path. can be supplied to This makes it possible to appropriately control the pressure of the coolant discharged from the first coolant discharge part toward the machining point onto the workpiece.
- the coolant processing apparatus further includes a first tank that stores coolant, and a chip conveyor that is housed in the first tank and receives chips and coolant discharged from the machine tool body.
- the second filter is built in the chip conveyor and provided on the coolant flow path from the chip conveyor to the first tank.
- coolant processing device configured in this way, clean coolant can be discharged from the second coolant discharge part toward the second filter built into the chip conveyor.
- the coolant processing device includes a fourth flow path branching from the third flow path and leading the coolant from the third flow path to the first tank, and provided on the path of the fourth flow path, the fourth flow path and a flow regulator for providing resistance to coolant flow in the passageway.
- the flow rate adjustment section makes it difficult for the coolant to flow in the fourth flow path, thereby appropriately adjusting the pressure of the coolant discharged from the second coolant discharge section toward the second filter. can be controlled to
- the coolant processing device includes a second tank that stores coolant and is connected to the first flow path, and a first filter that is provided on the path of the first flow path and stores the coolant stored in the second tank. a fifth flow path extending between the first tank and the second tank; and a fifth flow path provided on the path of the fifth flow path for pumping coolant from the first tank toward the second tank. and a third pump.
- the coolant processing apparatus configured in this way, by operating the third pump and the second pump, the coolant flows into the first tank, the fifth flow path, the second tank, the first flow path, the third flow
- the fluid circulates through the annularly connected channels in the order listed.
- the coolant stored in the first tank and the second tank can be cleaned by passing through the first filter.
- the coolant processing device is provided on the path of the third flow path, and includes a pressure detection section that detects the pressure of the coolant supplied toward the second coolant discharge section, and the coolant detected by the pressure detection section. and a control unit that controls the output of the second pump based on the pressure of the second pump.
- the coolant processing device configured in this way, by controlling the output of the second pump, regardless of the amount of coolant supplied to the first coolant discharge portion, The pressure of the discharged coolant can be appropriately controlled.
- FIG. 2 is a rear view showing a machine tool using the coolant processing device in FIG. 1;
- FIG. 2 is a side view showing a second tank in FIG. 1;
- FIG. 2 is a perspective view showing a second tank in FIG. 1;
- 2 is a block diagram showing a control system of a machine tool including the coolant processing device in FIG. 1;
- FIG. 2 is a rear view showing a machine tool using the coolant processing device in FIG. 1;
- FIG. 2 is a side view showing a second tank in FIG. 1;
- FIG. 2 is a perspective view showing a second tank in FIG. 1;
- 2 is a block diagram showing a control system of a machine tool including the coolant processing device in FIG. 1;
- FIG. 1 is a system diagram showing a coolant processing device according to an embodiment of the invention.
- 2 is a rear view showing a machine tool using the coolant processing device in FIG. 1.
- FIG. 1 is a system diagram showing a coolant processing device according to an embodiment of the invention.
- a coolant processing device 10 is used in a machine tool 100.
- the machine tool 100 is a machining center that processes a workpiece by bringing a rotating tool into contact with the workpiece.
- the machine tool 100 is an NC (Numerical Control) machine tool in which various operations for machining a workpiece are automated by numerical control by a computer.
- NC Genetic Control
- the machine tool for which the coolant processing apparatus of the present invention is used is not limited to a machining center, and may be a lathe that performs work machining by bringing the tool into contact with a rotating work, or a turning function and a milling function. or an AM/SM hybrid machine capable of additional machining (AM (additive manufacturing) machining) and SM (subtractive manufacturing) machining of a workpiece.
- AM additive manufacturing
- SM subtractive manufacturing
- the machine tool 100 has a machine tool body 110 and a coolant processing device 10 .
- the machine tool main body 110 processes a work.
- the machine tool main body 110 partitions and forms a work machining area 120, and includes a main body cover that forms the appearance of the machine tool 100, and a tool holder (tool spindle 88 in FIG. 5) for holding a tool in the machining area 120. and a work holder (table 89 in FIG. 5) for holding the work in the machining area 120 .
- the coolant processing device 10 is attached to the machine tool main body 110 .
- the coolant processing device 10 is a device for processing the coolant used for machining the work in the machine tool body 110 .
- the coolant discharged from the machine tool main body 110 along with the machining of the workpiece is guided to the coolant processing device 10, and the coolant is stored.
- the coolant processing device 10 cleans the coolant from the machine tool body 110 and supplies clean coolant to the machine tool body 110 again.
- the coolant processing device 10 has a chip conveyor 11.
- the chip conveyor 11 discharges chips and coolant generated in the machining area 120 along with the machining of the workpiece to the outside of the machine tool 100 .
- the chip conveyor 11 has a cover body 19 and a conveying device (not shown).
- the cover body 19 forms the appearance of the chip conveyor 11 .
- the cover body 19 forms an internal space in which the conveying device is arranged.
- the cover body 19 has a horizontal portion 12 and a rising portion 14 .
- the horizontal portion 12 extends horizontally.
- the rising portion 14 rises from one end of the horizontally extending horizontal portion 12 and extends obliquely upward.
- the cover body 19 as a whole has a bent shape between the horizontal portion 12 and the rising portion 14 .
- a chip reception port 13 and a chip discharge port 16 are provided in the cover body 19 .
- a chip receiving port 13 is provided in the horizontal portion 12 .
- the chip receiving port 13 is an opening facing upward.
- a chip discharge port 16 is provided in the rising portion 14 .
- the chip outlet 16 is provided at the end of the rising portion 14 extending obliquely upward from the horizontal portion 12 .
- the chip discharge port 16 consists of an opening facing downward.
- the chip conveyor 11 further has a second filter 42 .
- the second filter 42 is built in the chip conveyor 11 .
- the second filter 42 is housed in the cover body 19 .
- a second filter 42 is provided at a bent portion between the horizontal portion 12 and the rising portion 14 .
- the second filter 42 is provided on the coolant flow path from the chip conveyor 11 toward the first tank 21 which will be described later.
- the second filter 42 has a cylindrical shape centered on the central axis 101 .
- the central axis 101 extends horizontally.
- the second filter 42 is supported inside the cover body 19 so as to be rotatable around the central axis 101 .
- the second filter 42 is rotationally driven around the central axis 101 by being transmitted with power from a conveying device (not shown).
- the chip conveyor 11 is positioned with respect to the machine tool body 110 so that the chip receiving port 13 opens directly below the processing area 120 .
- a chip bucket for collecting chips is arranged below the chip discharge port 16 .
- Chips and coolant discharged from the machining area 120 are received inside the cover body 19 through the chip receiving port 13 .
- Chips are conveyed from the horizontal portion 12 toward the rising portion 14 by a conveying device (not shown), and collected in the chip bucket through the chip discharge port 16 .
- Coolant is filtered by entering from the outside of the second filter 42 into the inside thereof. The coolant cleaned by the second filter 42 is discharged from the inside of the second filter 42 to the first tank 21 which will be described later.
- the coolant processing device 10 further has a first tank 21 and a second tank 31 .
- the 1st tank 21 and the 2nd tank 31 consist of boxes which can store a coolant.
- the chip conveyor 11 is housed in the first tank 21.
- the chip conveyor 11 is provided at a position overlapping the first tank 21 when viewed from above.
- the second tank 31 is provided separately from the chip conveyor 11 .
- the second tank 31 is provided at a position that does not overlap the chip conveyor 11 when viewed from above.
- the first tank 21 has a bottom portion 22 and side portions 23 .
- the bottom part 22 is arranged at the bottom of the first tank 21 .
- Bottom portion 22 has, for example, a rectangular shape when viewed from above.
- the side portion 23 rises from the peripheral edge of the bottom portion 22 .
- a lower end portion of the side portion 23 is connected to the bottom portion 22 .
- a storage space 20 capable of storing coolant is formed above the bottom portion 22 and surrounded by the side portions 23 .
- the first tank 21 has a tank height Ha.
- the tank height Ha corresponds to the maximum length of the side portion 23 in the vertical direction.
- FIG. 3 is a side view showing the second tank in FIG. 4 is a perspective view showing the second tank in FIG. 1.
- FIG. 3 is a side view showing the second tank in FIG. 4 is a perspective view showing the second tank in FIG. 1.
- the second tank 31 has a bottom portion 32 and side portions 33 .
- the bottom part 32 is arranged at the bottom of the second tank 31 .
- the bottom portion 32 has a rectangular shape when viewed from above.
- the bottom 32 is arranged parallel to the horizontal plane.
- the side portion 33 rises from the peripheral edge of the bottom portion 32 .
- a lower end of the side portion 33 is connected to the bottom portion 32 .
- a storage space 30 capable of storing coolant is formed above the bottom portion 32 and surrounded by the side portions 33 .
- the second tank 31 further has a top portion 34.
- the top part 34 is arranged on the ceiling of the second tank 31 .
- the top portion 34 faces the bottom portion 32 in the vertical direction.
- the top portion 34 is detachably attached to the upper end portion of the side portion 33 .
- the top portion 34 constitutes a lid that closes the upper end opening of the side portion 33 .
- the second tank 31 has a tank height Hb.
- the tank height Hb corresponds to the maximum length of the side portion 33 in the vertical direction.
- the second tank 31 is taller than the first tank 21 .
- the tank height Hb is greater than the tank height Ha (Hb>Ha).
- the maximum length Hb of the side portion 33 in the vertical direction is greater than the length Bmax of a straight line connecting the two furthest points on the periphery of the bottom portion 32 when viewed from above (Hb> Bmax).
- Bmax corresponds to the length between two diagonal corners of the bottom 32 having a rectangular shape.
- the maximum length Hb of the side portion 33 in the vertical direction may be larger than 1.2 times the length Bmax of the straight line connecting the two furthest points on the periphery of the bottom portion 32 when viewed from above (Hb >1.2 x Bmax).
- the maximum length Hb of the side portion 33 in the vertical direction may be twice or less the length Bmax of the straight line connecting the two furthest points on the periphery of the bottom portion 32 when viewed from above (Hb ⁇ 2 ⁇ Bmax), and may be 1.5 times or less (Hb ⁇ 1.5 ⁇ Bmax).
- the bottom 32 may be arranged obliquely with respect to the horizontal plane. In such a configuration, when the heights of the upper ends of the side portions 33 are uniform, the maximum length Hb of the side portions 33 in the vertical direction is the lowest position of the bottom portion 32, and is the vertical length of the side portion 33 rising from the peripheral edge of the .
- the shape of the bottom portion 32 when viewed from above is not limited to a rectangular shape, and may be, for example, a polygonal shape other than a rectangular shape, a circular shape, or an L-shaped shape.
- the straight line connecting the two furthest points on the periphery of the bottom 32 for determining the length Bmax passes through a position not projected onto the bottom 32 in the vertical direction between the two furthest points on the periphery of the bottom 32.
- the area of the bottom 32 of the second tank 31 is smaller than the area of the bottom 22 of the first tank 21 .
- the coolant capacity in the second tank 31 is larger than the coolant capacity in the first tank 21 .
- the coolant volume in the second tank 31 may be equal to or less than the coolant volume in the first tank 21 .
- the coolant processing device 10 further has a first flow path 51 , a second pump 62 and a first filter 41 .
- the first flow path 51 is a passage through which coolant flows, and is composed of a piping member such as a steel pipe or hose.
- the first flow path 51 is connected to the second tank 31 .
- the first flow path 51 extends between the second tank 31 and a branch portion 56 which will be described later.
- the second pump 62 and the first filter 41 are provided on the path of the first flow path 51 .
- the second pump 62 is provided upstream of the coolant flow in the first flow path 51 relative to the first filter 41 .
- the first flow path 51 includes a first pipe 71 .
- the first pipe 71 is connected to the second tank 31 .
- the first pipe 71 is connected to the bottom portion 32 .
- a connection portion 71 p of the first pipe 71 to the bottom portion 32 opens into the storage space 30 at the bottom portion 32 .
- the first pipe 71 connects between the second tank 31 and the second pump 62 .
- the second tank 31 is configured to form a space 37 below the bottom portion 32 . More specifically, the second tank 31 further has a floor plate 36 and a plurality of pillars 35 .
- the sole plate 36 is placed on the floor of a factory or the like where the coolant processing device 10 is installed.
- the column portion 35 extends vertically. The upper end portion of the column portion 35 is connected to the bottom portion 32 and the lower end portion of the column portion 35 is connected to the floor plate 36 .
- the multiple pillars 35 are arranged at intervals from each other.
- a space 37 is formed between the bottom portion 32 and the bottom plate 36 .
- the second pump 62 is arranged in the space 37.
- the second pump 62 has a motor 72 , a shaft 76 , an impeller 73 , a coolant inlet 74 and a coolant outlet 75 .
- a motor 72 is provided as a power source for the second pump 62 .
- the motor 72 outputs rotational motion about the virtual central axis 102 by being supplied with electric power.
- the impeller 73 is provided apart from the motor 72 in the axial direction of the center shaft 102 .
- Shaft 76 extends axially of central axis 102 and is connected at both ends to motor 72 and impeller 73 .
- Shaft 76 transmits rotational motion output from motor 72 to impeller 73 .
- the impeller 73 rotates about the central axis 102 by receiving rotational motion transmitted from the shaft 76 .
- the coolant inlet 74 opens at the end of the second pump 62 in the axial direction of the central axis 102 .
- a first pipe 71 is connected to the coolant inflow portion 74 .
- the coolant outflow portion 75 opens at a position spaced radially outward from the central axis 102 .
- a pipe that forms the first flow path 51 and extends toward the first filter 41 is connected to the coolant outflow portion 75 .
- the second pump 62 is arranged in the space 37 with the shaft 76 (central axis 102) extending horizontally.
- the first filter 41 can remove foreign matter such as sludge or chips contained in the coolant flowing through the first flow path 51 .
- the first filter 41 is a cyclone filtering device that separates coolant from foreign matter such as sludge or chips contained in the coolant by centrifugal force.
- the first filter 41 may be provided in a form supported by the second tank 31 .
- a flow of coolant is formed in the first flow path 51 as the second pump 62 is driven.
- the coolant flowing through the first flow path 51 passes through the first filter 41, foreign matter such as sludge or chips contained in the coolant is removed. Thereby, the cleaned coolant is supplied through the first flow path 51 .
- the coolant processing device 10 further has a second flow path 52 , a first coolant discharge section 46 and a first pump 61 .
- the second flow path 52 branches off from the first flow path 51 .
- the coolant from the first flow path 51 flows through the second flow path 52 .
- the first coolant discharge part 46 discharges coolant toward the machining point of the workpiece.
- the first pump 61 is provided on the path of the second flow path 52 .
- the first pump 61 sends coolant toward the first coolant discharge portion 46 .
- the second flow path 52 is a passage through which coolant flows, and is composed of a piping member such as a steel pipe or hose.
- the second flow path 52 is connected to the first flow path 51 and a third flow path 53 (to be described later) at a branch portion 56 via various piping joints.
- the branching portion 56 is arranged downstream of the coolant flow in the first flow path 51 with respect to the first filter 41 .
- the second flow path 52 extends between the branch portion 56 and the first coolant discharge portion 46 .
- the first coolant discharge part 46 is provided on the machine tool body 110 .
- the first coolant discharge part 46 discharges coolant within the machining area 120 .
- the first coolant discharge part 46 is provided on the tool spindle 88 .
- the first coolant discharger 46 is a spindle-through type coolant discharger that discharges coolant from the cutting edge of the tool T held by the tool spindle 88 .
- the first coolant discharge part 46 mainly supplies coolant to the machining point of the workpiece, thereby suppressing heat generation at the machining point of the workpiece and lubricating between the workpiece and the tool T.
- the first pump 61 is an in-line pump that linearly pumps out coolant on the path of the second flow path 52 .
- the coolant cleaned by the first filter 41 and flowing through the first flow path 51 is supplied to the first coolant discharge portion 46 through the second flow path 52 .
- the first coolant discharge portion 46 is a coolant discharge device of spindle through specification, so the coolant flow path is narrow. Therefore, clogging of the coolant passage in the first coolant discharge portion 46 can be prevented by supplying clean coolant.
- the coolant processing device 10 further has a third flow path 53 and a second coolant discharge section 47 .
- the third channel 53 branches off from the first channel 51 .
- the coolant from the first flow path 51 flows through the third flow path 53 .
- the coolant from the third flow path 53 is supplied to the second coolant discharge portion 47 .
- the second coolant discharge portion 47 discharges coolant supplied from the third flow path 53 .
- the aforementioned second filter 42 incorporated in the chip conveyor 11 is cleaned by the coolant discharged from the second coolant discharge portion 47 .
- the third flow path 53 is a passage through which coolant flows, and is composed of a piping member such as a steel pipe or hose.
- the third flow path 53 extends between the branch portion 56 and the second coolant discharge portion 47 .
- the second coolant discharge part 47 consists of a nozzle body.
- the second coolant discharge part 47 is arranged inside the second filter 42 having a cylindrical shape.
- the second coolant discharge portion 47 is open facing the second filter 42 .
- the second coolant discharge part 47 discharges coolant toward the second filter 42 rotating around the central axis 101 to remove foreign matter such as sludge or chips from the second filter 42 .
- the coolant cleaned by the first filter 41 and flowing through the first flow path 51 is supplied to the second coolant discharge portion 47 through the third flow path 53 .
- the coolant cleaned by the first filter 41 and flowing through the first flow path 51 is supplied to the second coolant discharge portion 47 through the third flow path 53 .
- the coolant processing device 10 further has a fourth flow path 54 and a flow rate adjusting section 66 .
- the fourth flow path 54 branches off from the third flow path 53 .
- the fourth flow path 54 guides coolant from the third flow path 53 to the first tank 21 .
- the flow rate adjusting section 66 is provided on the path of the fourth flow path 54 .
- the flow rate adjusting portion 66 serves as a coolant flow resistance in the fourth flow path 54 .
- the fourth flow path 54 is a passage through which coolant flows, and is composed of a piping member such as a steel pipe or hose.
- the fourth flow path 54 is connected to the third flow path 53 at a branch portion 57 via various piping joints.
- the branching portion 57 is arranged downstream of the coolant flow in the third flow path 53 relative to the branching portion 56 and upstream of the coolant flow in the third flow path 53 relative to the second coolant discharge portion 47 .
- the fourth flow path 54 extends between the branch portion 57 and the first tank 21 .
- the flow rate adjusting portion 66 allows the coolant flow from the branch portion 57 toward the first tank 21 while providing resistance to the coolant flow in the fourth flow path 54, and also allows the coolant flow from the first tank 21 toward the branch portion 57. It consists of a check valve that regulates The flow rate adjusting section 66 is not limited to the above check valve. It may consist of an orifice with a narrowed conduit.
- the second coolant discharge part 47 made of a nozzle body has a narrowed discharge port, most of the coolant flowing through the third flow path 53 flows from the branch part 57 toward the fourth flow path 54, A phenomenon may occur in which a sufficient coolant discharge pressure cannot be obtained in the second coolant discharge portion 47 .
- the flow rate adjusting portion 66 provided in the fourth flow path 54 creates resistance to the flow of coolant in the fourth flow path 54 , so that the coolant flowing through the third flow path 53 is diverted from the branch portion 57 to It can flow toward both the second coolant discharge part 47 and the first tank 21 . Thereby, the pressure of the coolant discharged from the second coolant discharge portion 47 toward the second filter 42 can be appropriately controlled.
- the coolant processing device 10 further has a fifth flow path 55 and a third pump 63 .
- a fifth flow path 55 extends between the first tank 21 and the second tank 31 .
- the third pump 63 is provided on the route of the fifth flow path 55 .
- the third pump 63 pumps coolant from the first tank 21 toward the second tank 31 through the fifth flow path 55 .
- the fifth flow path 55 is a passage through which coolant flows, and is composed of a piping member such as a steel pipe or hose.
- the third pump 63 is installed in the first tank 21 .
- the third pump 63 is a pump that draws up the coolant stored in the first tank 21 and sends it toward the second tank 31 .
- the third pump 63 is provided at the end of the fifth flow path 55 on the first tank 21 side.
- the first tank 21, the fifth flow path 55, the second tank 31, the first flow path 51, the third flow path 53, and the fourth flow path 54 are circularly connected in the order listed. road is constructed.
- the coolant circulates through this circuit.
- the coolant passes through the first filter 41, so that the coolant stored in the first tank 21 and the second tank 31 can be cleaned.
- FIG. 5 is a block diagram showing the control system of the machine tool including the coolant processing device in FIG. 1 and 5, coolant processing device 10 further includes a first pressure detector 97, a second pressure detector 98, and a controller 91. As shown in FIG.
- the first pressure detection section 97 is provided on the path of the second flow path 52 .
- the first pressure detection portion 97 is provided between the first pump 61 and the first coolant discharge portion 46 on the path of the second flow path 52 .
- the first pressure detection unit 97 is composed of a pressure sensor capable of detecting the pressure of coolant.
- the first pressure detection portion 97 detects the pressure of the coolant supplied toward the first coolant discharge portion 46 .
- the second pressure detection section 98 is provided on the path of the third flow path 53 .
- the second pressure detection portion 98 is provided between the branch portion 57 and the second coolant discharge portion 47 on the path of the third flow path 53 .
- the second pressure detection unit 98 is composed of a pressure sensor capable of detecting coolant pressure. The second pressure detection portion 98 detects the pressure of the coolant supplied toward the second coolant discharge portion 47 .
- the control device 91 controls the machine tool 100 .
- the control device 91 is installed in the machine tool 100 and incorporated in a control panel for controlling various operations in the machine tool 100 .
- the control device 91 has a program storage section 92 , a program execution section 93 , a tool spindle control section 94 , a table control section 95 and a pump control section 96 .
- the program storage unit 92 stores an execution program (numerical control program) created by the operator of the machine tool 100 for machining the workpiece.
- the program storage unit 92 is, for example, a flash memory.
- the program execution unit 93 executes the execution program stored in the program storage unit 92.
- the program execution unit 93 reads commands of the execution program and outputs control signals to each of the tool spindle control unit 94, the table control unit 95 and the pump control unit 96.
- the tool spindle control section 94 receives a control signal from the program execution section 93 and controls the tool spindle motor 81 for rotating the tool spindle 88 and the tool spindle feed motor 82 for moving the tool spindle 88.
- the table control section 95 receives a control signal from the program execution section 93 and controls the table feed motor 83 for moving the table 89 .
- the pump control unit 96 receives a control signal from the program execution unit 93 and operates the motor 85 for operating the first pump 61, the motor 72 for operating the second pump 62, and the third pump 63. It controls the motor 87 for
- the control signal input from the program execution unit 93 to the pump control unit 96 includes a signal specifying the coolant discharge pressure from the first coolant discharge unit 46 .
- a coolant pressure signal detected by the first pressure detector 97 is input to the pump controller 96 .
- the pump controller 96 controls the output of the first pump 61 based on the coolant pressure detected by the first pressure detector 97 .
- the pump control unit 96 performs frequency control of the inverter for supplying power to the motor 85 .
- the pump control unit 96 controls the frequency of the inverter to
- the frequency control of the inverter is performed. to decrease the output of the motor 85 through .
- the coolant flow rate discharged from the first coolant discharge portion 46 is in the range of 0 L or more and 22 L or less.
- the coolant flowing through the first flow path 51 flows through the second flow path 52 to the first coolant discharge portion 46 .
- the coolant discharge pressure from the first coolant discharge section 46 can be appropriately controlled to the value designated by the control signal from the program execution section 93 .
- a coolant pressure signal detected by the second pressure detection unit 98 is also input to the pump control unit 96 .
- a coolant discharge pressure from the second coolant discharge part 47 is predetermined (for example, 40 kPa).
- the pump controller 96 controls the output of the second pump 62 based on the coolant pressure detected by the second pressure detector 98 .
- the pump control unit 96 performs frequency control of the inverter for supplying power to the motor 72 .
- the pump control unit 96 controls the frequency of the inverter to
- the frequency control of the inverter is performed. to decrease the output of motor 72 through .
- the ratio of the coolant flowing from the first flow path 51 to the third flow path 53 is As a result, a phenomenon may occur in which the discharge pressure of the coolant from the second coolant discharge portion 47 is lowered.
- the coolant discharge pressure from the second coolant discharge portion 47 can be kept at an appropriate level. can.
- the coolant processing device 10 includes the first flow path 51 through which the coolant flows, and the first flow path 51.
- a first filter 41 provided on the path, a second flow path 52 branched from the first flow path 51 and through which the coolant from the first flow path 51 flows, and a second flow path 52 that discharges the coolant toward the machining point of the workpiece.
- the coolant flowing through the first flow path 51 is caused to flow through the second flow path 52 to the first flow path by operating the first pump 61 . Since the coolant is preferentially supplied toward the coolant discharge portion 46, the discharge pressure of the coolant in the first coolant discharge portion 46 can be appropriately controlled.
- the first coolant discharge unit in the present invention is a coolant discharge device of spindle through specification
- the present invention is not limited to this. It may be a coolant discharge device that discharges coolant, or a coolant discharge device that discharges coolant from the spindle end surface of the tool spindle.
- the second coolant discharge part in the present invention may be a nozzle body that discharges coolant toward the filter built in the mist collector.
- This invention is applied, for example, to coolant processing equipment used in machine tools.
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- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
Claims (5)
- クーラントが流通する第1流路と、
前記第1流路の経路上に設けられる第1フィルタと、
前記第1流路から分岐し、前記第1流路からのクーラントが流通する第2流路と、
ワークの加工点に向けてクーラントを吐出する第1クーラント吐出部と、
前記第2流路の経路上に設けられ、前記第1クーラント吐出部に向けてクーラントを送り出す第1ポンプと、
前記第1流路から分岐し、前記第1流路からのクーラントが流通する第3流路と、
前記第3流路からのクーラントが供給され、クーラントを吐出する第2クーラント吐出部と、
前記第2クーラント吐出部から吐出されるクーラントによって洗浄される第2フィルタとを備える、クーラント処理装置。 - クーラントを貯留する第1タンクと、
前記第1タンクに収容され、工作機械本体から排出された切屑およびクーラントを受けるチップコンベアとをさらに備え、
前記第2フィルタは、前記チップコンベアに内蔵され、前記チップコンベアから前記第1タンクに向かうクーラント流れの経路上に設けられる、請求項1に記載のクーラント処理装置。 - 前記第3流路から分岐し、前記第3流路からのクーラントを前記第1タンクに導く第4流路と、
前記第4流路の経路上に設けられ、前記第4流路におけるクーラント流れの抵抗をなす流量調整部とをさらに備える、請求項2に記載のクーラント処理装置。 - クーラントを貯留し、前記第1流路が接続される第2タンクと、
前記第1流路の経路上に設けられ、前記第2タンクに貯留されたクーラントを前記第1フィルタに向けて送り出す第2ポンプと、
前記第1タンクおよび前記第2タンクの間で延びる第5流路と、
前記第5流路の経路上に設けられ、前記第1タンクから前記第2タンクに向けてクーラントを送り出す第3ポンプとをさらに備える、請求項3に記載のクーラント処理装置。 - 前記第3流路の経路上に設けられ、前記第2クーラント吐出部に向けて供給されるクーラントの圧力を検出する圧力検出部と、
前記圧力検出部により検出されたクーラントの圧力に基づいて、前記第2ポンプの出力を制御する制御部とをさらに備える、請求項4に記載のクーラント処理装置。
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EP21954265.1A EP4389346A1 (en) | 2021-08-20 | 2021-08-20 | Coolant treatment device |
PCT/JP2021/030631 WO2023021698A1 (ja) | 2021-08-20 | 2021-08-20 | クーラント処理装置 |
JP2023542162A JPWO2023021698A1 (ja) | 2021-08-20 | 2021-08-20 | |
CN202180103448.4A CN118139720A (zh) | 2021-08-20 | 2021-08-20 | 冷却液处理装置 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001105277A (ja) | 1999-10-05 | 2001-04-17 | Sumitomo Precision Prod Co Ltd | クーラント供給装置 |
WO2013038567A1 (ja) * | 2011-09-16 | 2013-03-21 | 株式会社牧野フライス製作所 | クーラント供給装置 |
JP2015196209A (ja) * | 2014-03-31 | 2015-11-09 | 株式会社industria | 加工液浄化システム |
KR20170033688A (ko) * | 2015-09-17 | 2017-03-27 | 최선곤 | 칩 및 오일 제거기능을 가지는 절삭유 공급장치 |
WO2020152834A1 (ja) * | 2019-01-24 | 2020-07-30 | 株式会社Fuji | 工作機械 |
JP6872087B1 (ja) * | 2021-01-07 | 2021-05-19 | Dmg森精機株式会社 | 工作機械、工作機械の制御方法、および工作機械の制御プログラム |
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2021
- 2021-08-20 WO PCT/JP2021/030631 patent/WO2023021698A1/ja active Application Filing
- 2021-08-20 CN CN202180103448.4A patent/CN118139720A/zh active Pending
- 2021-08-20 EP EP21954265.1A patent/EP4389346A1/en active Pending
- 2021-08-20 JP JP2023542162A patent/JPWO2023021698A1/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001105277A (ja) | 1999-10-05 | 2001-04-17 | Sumitomo Precision Prod Co Ltd | クーラント供給装置 |
WO2013038567A1 (ja) * | 2011-09-16 | 2013-03-21 | 株式会社牧野フライス製作所 | クーラント供給装置 |
JP2015196209A (ja) * | 2014-03-31 | 2015-11-09 | 株式会社industria | 加工液浄化システム |
KR20170033688A (ko) * | 2015-09-17 | 2017-03-27 | 최선곤 | 칩 및 오일 제거기능을 가지는 절삭유 공급장치 |
WO2020152834A1 (ja) * | 2019-01-24 | 2020-07-30 | 株式会社Fuji | 工作機械 |
JP6872087B1 (ja) * | 2021-01-07 | 2021-05-19 | Dmg森精機株式会社 | 工作機械、工作機械の制御方法、および工作機械の制御プログラム |
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CN118139720A (zh) | 2024-06-04 |
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