WO2022259671A1 - 工作機械、制御方法、および制御プログラム - Google Patents
工作機械、制御方法、および制御プログラム Download PDFInfo
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- WO2022259671A1 WO2022259671A1 PCT/JP2022/011539 JP2022011539W WO2022259671A1 WO 2022259671 A1 WO2022259671 A1 WO 2022259671A1 JP 2022011539 W JP2022011539 W JP 2022011539W WO 2022259671 A1 WO2022259671 A1 WO 2022259671A1
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- WIPO (PCT)
- Prior art keywords
- machine tool
- mist collector
- sensor
- mist
- substance
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000003595 mist Substances 0.000 claims abstract description 188
- 239000000126 substance Substances 0.000 claims abstract description 96
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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
- B23Q11/10—Arrangements for cooling or lubricating tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- 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
- B23Q11/0042—Devices for removing chips
- B23Q11/0046—Devices for removing chips by sucking
-
- 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
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
- B23Q11/0891—Protective coverings for parts of machine tools; Splash guards arranged between the working area and the operator
-
- 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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/007—Arrangements for observing, indicating or measuring on machine tools for managing machine functions not concerning the tool
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
Definitions
- the present disclosure relates to technology for controlling mist collectors provided in machine tools.
- Patent Document 1 discloses a machine tool equipped with a mist collector.
- the mist collector collects mist generated within the machine tool.
- the mist collector collects not only the mist generated inside the machine tool, but also various microscopic substances such as workpiece shavings floating in the air. When the mist collector is stopped, the minute substances may pass through gaps in the machine tool and leak out of the machine tool.
- the mist collector must always be driven in order to reliably prevent microscopic substances from leaking out of the machine tool. However, if the mist collector is constantly driven, the power consumption of the mist collector will increase. Therefore, techniques for reducing the amount of power consumed by mist collectors are desired.
- the machine tool disclosed in Patent Document 1 does not disclose any related technology.
- a machine tool includes a cover body for defining a machining area within the machine tool, a discharge part for discharging coolant to the machining area, and the discharge part being in the machining area.
- a mist collector for collecting substances in the air generated by discharging the coolant, a sensor provided outside the machining area for detecting the substances, and the substances detected by the sensors.
- a mist collector controller for starting a process of collecting the substance by the mist collector.
- the senor is provided inside the machine tool and outside the machining area.
- the machine tool further includes a recovery mechanism for recovering the coolant discharged from the discharge section to the machining area.
- the recovery mechanism is connected to the machining area inside the machine tool.
- the sensor is provided inside the recovery mechanism.
- the senor is provided outside the machine tool.
- the mist collector control unit controls, based on the fact that the substance is no longer detected by the sensor, The mist collector is controlled so that less material is collected.
- the machine tool includes a cover body for defining a machining area within the machine tool, a discharge part for discharging coolant to the machining area, and the discharge part discharging the coolant to the machining area. and a sensor provided outside the processing area for detecting the substance.
- the control method comprises the steps of obtaining an output of the sensor and, when the output indicates that the substance has been detected, initiating a collection process of the substance by the mist collector.
- the machine tool includes a cover body for defining a machining area within the machine tool, a discharge part for discharging coolant to the machining area, and the discharge part discharging the coolant to the machining area. and a sensor provided outside the processing area for detecting the substance.
- the control program causes the machine tool to obtain the output of the sensor, and when the output indicates that the substance has been detected, the mist collector starts collecting the substance. let it run.
- FIG. 3 is a view showing the inside of the machine tool from a direction different from that of FIG. 2; It is a figure which shows the structural example of the drive mechanism in a machine tool.
- Figure 2 shows a sectional view of the mist collector shown in Figure 1;
- FIG. 4 is a diagram showing the appearance of a recovery mechanism; It is a figure which shows the cross section of a collection
- FIG. 10 is a graph showing another example of control mode of the mist collector;
- FIG. 5 is a diagram showing the relationship between the output value of the mist sensor and the rotation speed of the fan in the mist collector;
- 3 is a diagram illustrating an example of a hardware configuration of a CPU (Central Processing Unit) unit;
- FIG. It is a figure which shows an example of the hardware constitutions of CNC (Computer Numerical Control) unit.
- 4 is a flow chart showing part of the processing executed by the control unit of the machine tool;
- FIG. 10 is a diagram for explaining another example of the installation location of the mist sensor;
- FIG. 1 is a diagram showing the appearance of a machine tool 100. As shown in FIG.
- Machine tool as used in this specification is a concept that includes various devices equipped with the function of machining a workpiece.
- a horizontal machining center will be described as an example of the machine tool 100, but the machine tool 100 is not limited to this.
- machine tool 100 may be a vertical machining center.
- machine tool 100 may be a lathe, an additional processing machine, or other cutting or grinding machine.
- the machine tool 100 may be a compound machine combining these.
- machine tool 100 includes mist collector 40 and cover body 130 .
- the cover body 130 is also called a splash guard, forms an appearance of the machine tool 100, and defines a machining area AR1 (see FIG. 2) for the workpiece W.
- machining area AR1 see FIG. 2
- the cover body 130 is provided with a door DR.
- the operator places the workpiece to be processed inside the cover body 130 with the door DR open.
- the worker closes the door DR when the installation of the work is completed.
- the mist collector 40 is provided at a position higher than the cover body 130 in the vertical direction. In the example of FIG. 1 , the mist collector 40 is connected to the ceiling portion of the cover body 130 .
- the mist collector 40 collects airborne substances (hereinafter also referred to as “microscopic substances”) within the machine tool 100 and prevents the microscopic substances within the cover body 130 from leaking out of the machine tool 100 .
- the minute substances collected by the mist collector 40 include, for example, mist generated by discharging the coolant, minute chips generated by machining the workpiece, and other foreign matter floating in the air.
- FIG. 2 is a diagram showing the state inside the machine tool 100.
- FIG. 3 is a view showing the inside of machine tool 100 from a different direction from FIG.
- the machine tool 100 includes a coolant discharge portion 125, a spindle head 131, a tool 134, a table 136, and a recovery mechanism 150 inside.
- Spindle head 131 includes a spindle 132 and a housing 133 .
- the axial direction of the main shaft 132 is hereinafter also referred to as the "Z-axis direction”.
- the direction of gravity is also referred to as the "Y-axis direction”.
- a direction orthogonal to both the Y-axis direction and the Z-axis direction is called an "X-axis direction.”
- An opening 135 is formed in the ceiling of the cover body 130 .
- the mist collector 40 described above is provided to cover the opening 135 . Thereby, the mist collector 40 collects minute substances in the air from the processing area AR1 through the opening 135 .
- the discharge unit 125 is provided in the machine tool 100 and discharges coolant to discharge chips generated by machining the workpiece W to the recovery mechanism 150 .
- the discharge section 125 is configured with one or more discharge mechanisms. 2 and 3 show ejection mechanisms 125A and 125B as an example of the ejection section 125. FIG.
- the discharge mechanism 125A is provided on the spindle head 131.
- the discharge mechanism 125A may be of a side-through specification in which the coolant is discharged from the end surface of the spindle 132 through the housing 133 of the spindle head 131. It may be a center-through specification that discharges.
- the discharge mechanism 125A mainly discharges coolant to the machining point of the workpiece, thereby removing chips adhering to the spindle 132 and the tool 134 and suppressing heat generation at the machining point of the workpiece.
- the discharge mechanism 125A is configured to be drivable in a rotational direction about the X-axis direction (that is, the A-axis direction), and is also driven in a rotational direction that is about the Z-axis direction (that is, the C-axis direction). configured as possible. Thereby, the discharge mechanism 125A changes the coolant discharge direction in the A-axis direction and the C-axis direction.
- the discharge mechanism 125B is provided above the discharge mechanism 125A.
- the discharge mechanism 125B is attached to the ceiling portion of the cover body 130, for example.
- the discharge mechanism 125B mainly discharges coolant from the cover body 130 to the entire processing area AR1.
- the main shaft 132 is provided inside the housing 133 .
- a tool for machining a workpiece W which is a workpiece, is attached to the spindle 132 .
- a tool 134 used for milling the workpiece W is attached to the spindle 132.
- the recovery mechanism 150 discharges chips generated by machining the workpiece W outside the machining area AR1. Also, the recovery mechanism 150 recovers the coolant discharged from the discharge part 125 to the processing area AR1.
- FIG. 4 is a diagram showing a configuration example of a drive mechanism in the machine tool 100. As shown in FIG. 4
- the machine tool 100 includes a control unit 50, a pump 109, motor drivers 111A, 111R, 111X to 111Z, motors 112A, 112R, 112X to 112Z, a moving body 113, and a discharge mechanism.
- 125A, 125B, spindle head 131, tool 134, and table 136 are included.
- control unit 50 means a device that controls the machine tool 100.
- the device configuration of the control unit 50 is arbitrary.
- the control section 50 may be composed of a single control unit, or may be composed of a plurality of control units.
- the control section 50 is composed of a CPU unit 20 as a PLC (Programmable Logic Controller) and a CNC unit 30 .
- CPU unit 20 and CNC unit 30 communicate with each other via communication path B (for example, fieldbus or LAN cable).
- the CPU unit 20 controls various units within the machine tool 100 according to a predesigned PLC program.
- the PLC program is written in, for example, a ladder program.
- the CPU unit 20 controls the motor driver 111M in the mist collector 40 according to the PLC program.
- the motor driver 111M receives an input of the target rotational speed of the motor 112M from the CPU unit 20 and controls the motor 112M. This controls the ON/OFF of driving of the mist collector 40, the amount of mist sucked by the mist collector 40, and the like.
- the motor 112M may be an AC motor, a stepping motor, a servo motor, or any other type of motor.
- the CPU unit 20 controls the pump 109 according to the PLC program and controls the discharge of coolant by the discharge section 125 . Thereby, ON/OFF of coolant discharge, coolant discharge amount, and the like are controlled.
- the CPU unit 20 controls the motor driver 111A according to the PLC program.
- the motor driver 111A receives an input of the target rotation speed of the motor 112A from the CPU unit 20 and controls the motor 112A. This controls the ON/OFF of the driving of the recovery mechanism 150, the transport speed of the chips by the recovery mechanism 150, and the like.
- the motor 112A may be an AC motor, a stepping motor, a servomotor, or any other type of motor.
- the CNC unit 30 Upon receiving a machining start command from the CPU unit 20, the CNC unit 30 starts executing a pre-designed machining program.
- the machining program is written in, for example, an NC (Numerical Control) program.
- the CNC unit 30 controls the motor drivers 111R, 111X to 111Z according to the machining program to machine the workpiece W fixed to the table 136.
- FIG. 1 A machining start command
- FIG. 1 machining start command from the CPU unit 20
- the CNC unit 30 controls the motor drivers 111R, 111X to 111Z according to the machining program to machine the workpiece W fixed to the table 136.
- the motor driver 111R sequentially receives input of the target rotation speed from the CNC unit 30 and controls the motor 112R.
- the motor 112R rotates the main shaft 132 about the Z-axis direction.
- the motor 112R may be an AC motor, a stepping motor, a servo motor, or any other type of motor.
- the motor driver 111R calculates the actual rotational speed of the motor 112R from a feedback signal from an encoder (not shown) for detecting the rotational angle of the motor 112R. Then, the motor driver 111R increases the rotation speed of the motor 112R when the calculated actual rotation speed is lower than the target rotation speed, and increases the rotation speed of the motor 112R when the calculated actual rotation speed is higher than the target rotation speed. lower the In this way, the motor driver 111R brings the rotation speed of the motor 112R closer to the target rotation speed while sequentially receiving the feedback of the rotation speed of the motor 112R.
- the motor driver 111X sequentially receives input of target positions from the CNC unit 30 and controls the motor 112X.
- the motor 112X feeds and drives the moving body 113 to which the spindle head 131 is attached via a ball screw (not shown) to move the spindle 132 to an arbitrary position in the X direction. Since the method of controlling motor 112X by motor driver 111X is the same as that of motor driver 111R, description thereof will not be repeated.
- the motor 112X may be an AC motor, a stepping motor, a servo motor, or any other type of motor.
- the motor driver 111Y sequentially receives input of target positions from the CNC unit 30 and controls the motor 112Y.
- the motor 112Y feeds and drives the moving body 113 to which the spindle head 131 is attached via a ball screw (not shown) to move the spindle 132 to an arbitrary position in the Y direction. Since the method of controlling motor 112Y by motor driver 111Y is the same as that of motor driver 111R, description thereof will not be repeated.
- the motor 112Y may be an AC motor, a stepping motor, a servo motor, or any other type of motor.
- the motor driver 111Z sequentially receives input of target positions from the CNC unit 30 and controls the motor 112Z.
- the motor 112Z feeds and drives the moving body 113 to which the spindle head 131 is attached via a ball screw (not shown) to move the spindle 132 to an arbitrary position in the Z direction. Since the method of controlling motor 112Z by motor driver 111Z is the same as that of motor driver 111R, description thereof will not be repeated.
- the motor 112Z may be an AC motor, a stepping motor, a servo motor, or any other type of motor.
- FIG. 5 is a diagram showing a cross-sectional view of the mist collector 40 shown in FIG.
- the mist collector 40 includes a housing 52.
- Housing 52 has an opening 135 that functions as an air intake.
- the mist collector 40 guides airborne minute substances in the processing area AR1 into the housing 52 through the opening 135 .
- the interior of the housing 52 is divided into a first filtering area 52A and a second filtering area 52B.
- the minute substances collected from the processing area AR1 sequentially pass through the first filtering area 52A and the second filtering area 52B.
- the first filtering area 52A is composed of a cylindrical portion 55A and a cylindrical portion 55B.
- 55 A of cylindrical parts are connected with the cylindrical part 55B.
- the cylindrical portion 55A and the cylindrical portion 55B are arranged coaxially with the axis AX as a central axis.
- the direction perpendicular to the axis AX is also referred to as the "radial direction".
- the inner diameter of the tubular portion 55A in the radial direction is longer than the inner diameter of the tubular portion 55B in the radial direction.
- a shaft 54 is accommodated in the first filtering area 52A.
- a rotating filter 56 and a fan 57 are fixed to the shaft 54 .
- the shaft 54 is connected to the motor 112M described above and configured to be rotatable about the axis AX. As a result, the shaft 54 functions as a rotating shaft and rotates the rotary filter 56 and the fan 57 in conjunction with each other.
- the rotary filter 56 is housed in the cylindrical portion 55A of the housing 52.
- the radial direction of the rotary filter 56 is perpendicular to the inner surface of the cylindrical portion 55A.
- the term "perpendicular" as used herein is a concept that can include not only 90 degrees but also approximately 90 degrees. That is, the angle formed by the radial direction of the rotary filter 56 and the inner surface of the tubular portion 55A may be 90 degrees or approximately 90 degrees (for example, 85 degrees or more and 95 degrees or less).
- the fan 57 is accommodated in the cylindrical portion 55B of the housing 52.
- the fan 57 functions as rotor blades for generating an airflow that passes through the rotary filter 56 . That is, by rotating the fan 57 , the minute substances in the processing area AR ⁇ b>1 are guided to the rotating filter 56 .
- the rotating filter 56 uses centrifugal force to radially scatter impinging minute substances. As a result, the minute substances are collected by the rotating filter 56 . Micro-matter collected by rotary filter 56 is returned into machine tool 100, for example.
- a cleaning mechanism 90 is accommodated in the cylindrical portion 55B of the housing 52.
- the cleaning mechanism 90 is a mechanism for cleaning the rotary filter 56 by ejecting fluid onto the rotary filter 56 .
- the cleaning mechanism 90 is arranged between the rotating filter 56 and the fan 57 in the axial direction of the axis AX. In other words, the cleaning mechanism 90 is arranged downstream of the rotating filter 56 in the direction of airflow passing through the rotating filter 56 and upstream of the fan 57 in the direction of airflow passing through the rotating filter 57 . ing.
- a coolant is supplied to the cleaning mechanism 90 from a coolant tank (not shown) attached to the machine tool 100 .
- the coolant supplied to the cleaning mechanism 90 is discharged to the rotating filter 56 through the outlet of the cleaning mechanism 90 .
- the cleaning mechanism 90 removes minute substances adhering to the downstream side of the rotary filter 56 from the upstream side of the rotary filter 56 .
- the removed minute matter is returned to the working area AR1 of the machine tool 100 through the opening 135 described above.
- the fluid discharged from the cleaning mechanism 90 to the rotary filter 56 is not limited to coolant, and may be air, for example.
- a multilayer filter 70 is accommodated in the second filtering area 52B.
- Multilayer filter 70 is stationary, unlike rotating filter 56 .
- the multi-layer filter 70 collects minute substances that have passed through the rotating filter 56 .
- FIG. 6 is a diagram showing the appearance of the recovery mechanism 150.
- FIG. 7 is a diagram showing a cross section of the recovery mechanism 150. As shown in FIG.
- the collection mechanism 150 is provided side by side with the cover body 130 that defines the processing area AR1.
- the recovery mechanism 150 receives work chips and coolant discharged from the processing area AR1.
- the recovery mechanism 150 has a recovery tank 11.
- the recovery tank 11 is configured to be able to store coolant.
- the recovery mechanism 150 conveys the chips to a chip bucket (not shown) and filters the coolant to discharge the clean coolant to the recovery tank 11 .
- the recovery mechanism 150 further has a cover body 21.
- the cover body 21 forms the appearance of the recovery mechanism 150 .
- the cover body 21 has a housing shape that forms a space inside.
- the cover body 21 has a horizontal portion 22, a chip receiving portion 23, a rising portion 26, and a chip discharging portion 27 as its constituent parts.
- the cover body 21 as a whole has a bent shape between the horizontal portion 22 and the rising portion 26 .
- the horizontal portion 22 is placed inside the recovery tank 11 .
- the horizontal portion 22 has a plate-like appearance extending in the horizontal direction.
- the horizontal portion 22 has a rectangular shape in plan view.
- the rising portion 26 rises from one longitudinal end of the horizontal portion 22 and extends obliquely upward.
- the chip receiving portion 23 is provided on the horizontal portion 22 .
- the chip receiving portion 23 is composed of a housing provided on the top surface of the horizontal portion 22 .
- a connection port 24 is provided in the chip receiving portion 23 .
- the connection port 24 consists of a through-hole penetrating through the chip receiving portion 23 .
- the chip receiving unit 23 is connected through a connection port 24 to the chip conveying device 12, which is equipment of the processing area AR1.
- the chip conveying device 12 includes, for example, a gutter extending in one direction and a spiral conveyor installed on the gutter.
- the chip discharging portion 27 is provided at the end of the rising portion 26 extending obliquely upward from the horizontal portion 22 .
- the chip discharging portion 27 is formed by an opening of the cover body 21 that opens vertically downward.
- a chip bucket (not shown) for collecting chips is installed below the chip discharging section 27 . Chips of the work discharged from the processing area AR1 are received in the cover body 21 through the chip receiving portion 23 . Chips are conveyed inside the cover body 21 by a chip conveying mechanism, which will be described subsequently, discharged from the chip discharging section 27, and collected in a chip bucket.
- the collection mechanism 150 further has a chip transport section 35 .
- the chip conveyer 35 is accommodated in the cover body 21 .
- the chip conveying unit 35 is a device for conveying chips within the cover body 21 .
- the chip conveying section 35 has a pair of endless chains 34, a driving sprocket 37, and a driven sprocket 38.
- the drive sprocket 37 is provided at the end of the rising portion 26 extending obliquely upward from the horizontal portion 22 .
- the drive sprocket 37 is arranged above the chip discharger 27 .
- the drive sprocket 37 is rotatably supported about an axis extending in a direction orthogonal to the plane of FIG. 7 (hereinafter, this direction is also referred to as "the width direction of the recovery mechanism 150").
- the drive sprocket 37 is connected to the output shaft of the motor 112A (see FIG. 4). The drive sprocket 37 rotates when power is transmitted from the motor 112A.
- the driven sprocket 38 is provided at a bent portion between the horizontal portion 22 and the rising portion 26.
- the driven sprocket 38 is rotatably supported around an axis (axis AX1) extending in the width direction of the recovery mechanism 150 .
- the pair of endless chains 34 are arranged in parallel with a distance in the width direction of the recovery mechanism 150 .
- the endless chain 34 is looped around the horizontal portion 22 and the rising portion 26 inside the cover body 21 .
- the endless chain 34 is arranged inside the cover body 21 so as to reciprocate between a position facing the chip receiving portion 23 and a position facing the chip discharging portion 27 .
- the endless chain 34 is looped around the drive sprocket 37 and the driven sprocket 38 on the route routed inside the cover body 21, and is guided by a plurality of guide members.
- the endless chain 34 rotates in the direction indicated by arrow A (hatched arrow) in FIG.
- the recovery mechanism 150 further has a filtering mechanism 39.
- the filtering mechanism 39 is configured to filter the coolant received from the processing area AR ⁇ b>1 to discharge clean coolant from the inside of the cover body 21 to the recovery tank 11 .
- the filtering mechanism 39 has a drum-shaped filter 46 .
- Filter 46 is accommodated in cover body 21 .
- a filter 46 is provided at the bend between the horizontal portion 22 and the rising portion 26 .
- the filter 46 is configured to capture foreign matter such as chips contained in the coolant.
- the filter 46 has, for example, a cylindrical shape and forms an internal space 47 inside thereof.
- the drum-shaped filter 46 is arranged so that its central axis extends in the width direction of the recovery mechanism 150 .
- Filter 46 is arranged such that its central axis coincides with axis AX1, which is the center of rotation of driven sprocket 38 .
- the filter 46 is connected to the driven sprocket 38 at both ends in the axial direction of the axis AX1.
- the shape of the filter 46 is not limited to the drum shape.
- the shape of the filter 46 may be rectangular or circular.
- a coolant discharge portion 28 is formed in the cover body 21 .
- the coolant discharge part 28 consists of a through-hole penetrating through the cover body 21 .
- the coolant discharge part 28 is provided so as to allow the internal space 47 of the filter 46 and the external space outside the cover body 21 to communicate with each other.
- the coolant received in the cover body 21 through the chip receiving portion 23 is filtered by entering the internal space 47 of the filter 46 .
- the filtered coolant is discharged to the recovery tank 11 through the coolant discharge portion 28 .
- FIG. 8 is a diagram for explaining an example of the installation location of the mist sensor 80. As shown in FIG.
- the space inside the machine tool 100 is also called an internal space SP1
- the outside of the machine tool 100 is also called an external space SP2.
- a region defined by the cover body 130 within the internal space SP1 of the machine tool 100 is also referred to as a processing area AR1.
- the area other than the processing area AR1 is also referred to as an outside processing area AR2.
- the outside processing area AR2 includes, for example, the space within the collection mechanism 150 and the external space SP2.
- the cover body 130 forms the appearance of the machine tool 100 and defines the workpiece processing area AR1.
- the minute substances generated in the processing area AR1 may pass through the gaps in the cover body 130 and leak to the outside of the processing area AR2. Leakage of minute substances to the outside of the processing area AR2 means that a large amount of minute substances are generated inside the machine tool 100 .
- a mist sensor 80 is provided outside the processing area AR2.
- the mist sensor 80 is a sensor for detecting minute substances that have flowed outside the processing area AR2.
- the mist sensor 80 may be an optical sensor, an ultrasonic sensor, a camera, or any other sensor capable of detecting minute substances in the air. There may be.
- the machine tool 100 starts the collection process of the minute substances by the mist collector 40 based on the detection of the minute substances by the mist sensor 80 .
- the minute matter collection process by the mist collector 40 is not executed until the minute matter is detected outside the processing area AR2.
- the frequency of execution of the collection process by the mist collector 40 is reduced, and the power consumption of the mist collector 40 can be reduced.
- the mist sensor 80 is provided inside the machine tool 100 (that is, the internal space SP1) and outside the machining area AR2. As a result, the machine tool 100 can drive the mist collector 40 before the minute substances leak into the external space SP2, and can prevent the minute substances from leaking into the external space SP2.
- the mist sensor 80 is provided inside the recovery mechanism 150.
- the recovery mechanism 150 is connected to the machining area AR1 in the internal space SP1 of the machine tool 100.
- the recovery mechanism 150 communicates with the cover body 130 via the above-described chip receiver 23 (see FIG. 6).
- the cover body 21 that forms the appearance of the recovery mechanism 150 communicates with the cover body 130 that forms the processing area AR1. Therefore, minute substances generated in the processing area AR1 may flow into the collection mechanism 150 .
- the minute substances that have flowed to the recovery mechanism 150 are directed along the arrow R toward the chip discharging section 27 .
- the mist sensor 80 can detect minute substances that have flowed into the recovery mechanism 150 . Therefore, the machine tool 100 can prevent minute substances from leaking from the recovery mechanism 150 .
- the installation location of the mist sensor 80 is not limited to the collection mechanism 150 .
- the mist sensor 80 can be provided at various locations where minute substances may leak from the processing area AR1.
- FIG. 9 is a diagram showing an example of the functional configuration of the machine tool 100. As shown in FIG.
- the control unit 50 of the machine tool 100 includes an acquisition unit 152 and a mist collector control unit 154 as functional configurations.
- the functions of the acquisition unit 152 and the mist collector control unit 154 will be described below in order.
- the acquisition unit 152 may be implemented in the CPU unit 20 described above, or may be implemented in the CNC unit 30 described above.
- the acquisition unit 152 acquires the detection result of the mist sensor 80 described above.
- a mist sensor 80 detects the amount of mist in the air.
- the output value of the mist sensor 80 increases as the amount of minute substances in the air increases, and the output value of the mist sensor 80 decreases as the amount of minute substances in the air decreases.
- the detection result acquired by the acquisition unit 152 is output to the mist collector control unit 154 .
- the mist collector control section 154 may be mounted on the CPU unit 20 described above, or may be mounted on the CNC unit 30 described above.
- the mist collector control unit 154 Based on the detection result of the mist sensor 80, the mist collector control unit 154 sends a control command to the motor driver 111M. Thereby, the mist collector control unit 154 controls the mist collector 40 via the motor driver 111M.
- the mist collector control unit 154 adjusts the amount of minute substances collected per unit time by the mist collector 40 (hereinafter also referred to as "collection speed") before and after the minute substances are detected by the mist sensor 80.
- the mist collector control unit 154 based on the fact that the mist sensor 80 detects microscopic substances, controls the mist so that the collection speed of the mist collector 40 is faster than before the detection of the microscopic substances. Control the collector 40 . After that, when the mist sensor 80 no longer detects the minute substances, the mist collector control unit 154 controls the mist collector 40 so that the collection speed of the mist collector 40 becomes slower than when the minute substances were detected. control 40;
- the collection speed of the mist collector 40 can be adjusted, for example, by the rotational speed of the fan 57 in the mist collector 40. More specifically, the faster the rotational speed of the fan 57 in the mist collector 40, the faster the mist collector 40 collects. On the other hand, the slower the rotation speed of the fan 57 in the mist collector 40 is, the slower the collection speed of the mist collector 40 is.
- FIG. 10 is a graph showing an example of control mode of the mist collector 40. As shown in FIG.
- the horizontal axis of the graph shown in FIG. 10 indicates time.
- the vertical axis of the graph shown in FIG. 10 indicates the rotational speed of the fan 57 in the mist collector 40. As shown in FIG.
- the mist collector control unit 154 sets the rotational speed of the fan 57 in the mist collector 40 to "V1".
- the mist collector control unit 154 sets the rotational speed of the fan 57 in the mist collector 40 to "V2".
- the rotational speed "V2" is faster than the rotational speed "V1".
- the mist collector control unit 154 returns the rotational speed of the fan 57 in the mist collector 40 to "V1" again.
- FIG. 11 is a graph showing another example of control mode of the mist collector 40. As shown in FIG.
- the horizontal axis of the graph shown in FIG. 11 indicates time.
- the vertical axis of the graph shown in FIG. 11 indicates the running state of the mist collector 40.
- the state in which the mist collector 40 is performing the process of collecting minute substances is indicated as "ON”
- the state in which the process of collecting minute substances by the mist collector 40 is not being performed is indicated as "OFF”.
- the rotational speed of the fan 57 is zero.
- the output value of the mist sensor 80 is less than or equal to a predetermined threshold.
- the mist collector control unit 154 turns off the mist collector 40 .
- the mist collector control unit 154 turns on the mist collector 40 .
- the mist collector control unit 154 sets the rotation speed of the fan 57 in the mist collector 40 to "V2" described above.
- the mist collector controller 154 turns off the mist collector 40 .
- mist collector control unit 154 does not necessarily have to control the collection speed of the mist collector 40 in two stages.
- the mist collector control section 154 may control the collection speed of the mist collector 40 in three or more stages according to the output value of the mist sensor 80 .
- FIG. 12 is a diagram showing the relationship between the output value of the mist sensor 80 and the rotation speed of the fan 57 in the mist collector 40.
- the mist collector control unit 154 increases the rotation speed of the mist collector 40 as the output value of the mist sensor 80 increases. In other words, the mist collector control unit 154 slows down the rotational speed of the mist collector 40 as the output value of the mist sensor 80 decreases.
- the correspondence between the output value of the mist sensor 80 and the rotation speed of the fan 57 of the mist collector 40 is determined in advance.
- the correspondence is defined in a table format in which the rotation speed of fan 57 is associated with each output value of mist sensor 80 .
- the corresponding relationship is defined by a relational expression having the output value of the mist sensor 80 as an explanatory variable and the rotation speed of the fan 57 as an objective variable.
- FIG. 13 is a diagram showing an example of the hardware configuration of the CPU unit 20. As shown in FIG. 13,
- the CPU unit 20 includes a control circuit 201 , a ROM (Read Only Memory) 202 , a RAM (Random Access Memory) 203 , communication interfaces 204 and 205 , and an auxiliary storage device 220 . These components are connected to internal bus 209 .
- the control circuit 201 is composed of, for example, at least one integrated circuit.
- An integrated circuit is composed of, for example, at least one CPU, at least one GPU (Graphics Processing Unit), at least one ASIC (Application Specific Integrated Circuit), at least one FPGA (Field Programmable Gate Array), or a combination thereof can be
- the control circuit 201 controls the operation of the CPU unit 20 by executing various programs such as the control program 222 .
- Control program 222 defines instructions for controlling various devices within machine tool 100 .
- the control circuit 201 reads the control program 222 from the auxiliary storage device 220 or the ROM 202 to the RAM 203 based on the reception of the instruction to execute the control program 222 .
- the RAM 203 functions as a working memory and temporarily stores various data necessary for executing the control program 222 .
- the communication interface 204 is an interface for realizing communication using a LAN (Local Area Network) cable, WLAN (Wireless LAN), Bluetooth (registered trademark), or the like.
- the CPU unit 20 realizes communication with external devices such as the above-described pump 109 and the above-described motor drivers 111A and 111M via the communication interface 305 .
- the communication interface 205 is an interface for realizing communication with various units connected to the fieldbus. Examples of units connected to the fieldbus include the CNC unit 30 and an I/O unit (not shown).
- the auxiliary storage device 220 is, for example, a storage medium such as a hard disk or flash memory.
- Auxiliary storage device 220 stores various information such as control program 222 .
- the control program 222 includes, for example, an instruction code for specifying the discharge amount/discharge pressure of the coolant by the cleaning mechanism 90 described above, an instruction for specifying ON/OFF of the coolant discharge by the cleaning mechanism 90 described above. including code.
- the control program 222 includes an instruction code for specifying ON/OFF of rotation of the fan 57 in the mist collector 40 and an instruction code for specifying the rotational speed of the fan 57 in the mist collector 40.
- the control program 222 includes an instruction code for specifying the discharge amount/discharge pressure of the coolant by the discharge unit 125, and an instruction for specifying ON/OFF of the coolant discharge by the discharge unit 125. including code.
- the storage location of the control program 222 is not limited to the auxiliary storage device 220, but may be stored in the storage area of the control circuit 201 (for example, cache memory), ROM 202, RAM 203, external equipment (for example, server), or the like.
- control program 222 may be provided not as a standalone program but as part of an arbitrary program. In this case, various processes according to the present embodiment are implemented in cooperation with arbitrary programs. Even a program that does not include such a part of modules does not deviate from the gist of control program 222 according to the present embodiment. Furthermore, some or all of the functions provided by control program 222 may be implemented by dedicated hardware. Furthermore, the CPU unit 20 may be configured in a form such as a so-called cloud service in which at least one server executes part of the processing of the control program 222 .
- FIG. 14 is a diagram showing an example of the hardware configuration of the CNC unit 30. As shown in FIG. 14,
- the CNC unit 30 includes a control circuit 301, a ROM 302, a RAM 303, a communication interface 305, a communication interface 305, and an auxiliary storage device 320. These components are connected to internal bus 309 .
- the control circuit 301 is composed of, for example, at least one integrated circuit.
- An integrated circuit may comprise, for example, at least one CPU, at least one ASIC, at least one FPGA, or a combination thereof.
- the control circuit 301 controls the operation of the CNC unit 30 by executing various programs such as the machining program 322 .
- the machining program 322 is a program for realizing workpiece machining.
- the control circuit 301 reads the machining program 322 from the ROM 302 to the RAM 303 based on the acceptance of the instruction to execute the machining program 322 .
- the RAM 303 functions as a working memory and temporarily stores various data necessary for executing the machining program 322 .
- a communication interface 305 is an interface for realizing communication using LAN, WLAN, Bluetooth (registered trademark), or the like.
- the CNC unit 30 implements communication with the CPU unit 20 via the communication interface 305.
- FIG. Also, CNC unit 30 realizes communication with various drive units (for example, motor drivers 111R, 111X to 111Z, etc.) for work machining via communication interface 305 or other communication interfaces.
- the auxiliary storage device 320 is, for example, a storage medium such as a hard disk or flash memory.
- the auxiliary storage device 320 stores a machining program 322 and the like.
- the storage location of the machining program 322 is not limited to the auxiliary storage device 320, and may be stored in the storage area of the control circuit 301 (for example, cache memory), ROM 302, RAM 303, external equipment (for example, server), and the like.
- FIG. 15 is a flow chart showing part of the processing executed by control unit 50 of machine tool 100 .
- the processing shown in FIG. 15 is implemented by the control unit 50 of the machine tool 100 executing the control program. In other aspects, part or all of the processing may be performed by circuit elements or other hardware.
- control unit 50 determines whether or not the machining of the workpiece has started. As an example, the control unit 50 determines that machining of the workpiece has started based on the start of execution of the machining program 322 . When control unit 50 determines that machining of the workpiece has started (YES in step S110), it switches control to step S120. Otherwise (NO in step S110), control unit 50 terminates the process shown in FIG.
- step S120 the control unit 50 functions as the acquisition unit 152 described above, and determines whether or not the output of the mist sensor 80 indicates that minute substances have been detected. As an example, the control unit 50 determines that minute substances have been detected based on the fact that the output value of the mist sensor 80 exceeds a predetermined value.
- control unit 50 determines that a minute substance has been detected (YES in step S120)
- control unit 50 switches control to step S124. Otherwise (NO in step S120), control unit 50 switches control to step S122.
- step S ⁇ b>122 the control unit 50 functions as the mist collector control unit 154 described above and adjusts the collection speed of minute substances by the mist collector 40 .
- the controller 50 controls the motor driver 111M to rotate the fan 57 of the mist collector 40 at a predetermined rotational speed "V1".
- the rotational speed "V1" is slower than the rotational speed "V2" shown in step S124, which will be described later.
- step S124 the control unit 50 functions as the mist collector control unit 154 described above, and adjusts the minute substance collection speed of the mist collector 40.
- the controller 50 controls the motor driver 111M to rotate the fan 57 of the mist collector 40 at a predetermined rotational speed "V2".
- the rotational speed "V2" is faster than the rotational speed "V1" shown in step S122 above.
- control unit 50 determines whether or not the machining of the workpiece has been completed. As an example, the control unit 50 determines that the machining of the workpiece has ended based on the completion of execution of the machining program 322 . When control unit 50 determines that the machining of the workpiece has ended (YES in step S130), it switches control to step S132. Otherwise (NO in step S130), control unit 50 returns the process to step S120.
- step S132 the control unit 50 functions as the mist collector control unit 154 described above, and adjusts the speed at which the mist collector 40 collects minute substances.
- the controller 50 controls the motor driver 111M to rotate the fan 57 of the mist collector 40 at a predetermined rotation speed "V3".
- the rotational speed "V3" is, for example, faster than the rotational speed "V1" shown in step S122 described above and slower than the rotational speed "V2" shown in step S124 described above.
- step S140 the control unit 50 functions as the mist collector control unit 154 described above, and determines whether or not a certain period of time has elapsed since the rotational speed of the fan 57 of the mist collector 40 was set to "V3".
- control unit 50 determines that the certain period of time has elapsed (YES in step S140)
- control unit 50 switches control to step S142. Otherwise (NO in step S140), control unit 50 executes the process of step S140 again.
- step S142 the control unit 50 functions as the mist collector control unit 154 described above and turns off the mist collector 40. As a result, the mist collector 40 stops collecting minute substances.
- FIG. 16 is a diagram for explaining another example of the installation location of the mist sensor 80. As shown in FIG.
- the mist sensor 80 was provided inside the machine tool 100 .
- the mist sensor 80 is provided outside the machine tool 100 . That is, the mist sensor 80 is provided in the external space SP2.
- FIG. 16 shows a mist sensor 80 as a camera as an example.
- the camera is provided so that its imaging field of view includes part or all of machine tool 100 .
- the camera is installed on the wall or ceiling in the factory where the machine tool 100 is installed.
- the number of machine tools 100 included in the field of view of the camera may be one or plural.
- the machine tool 100 sequentially acquires images from the mist sensor 80 as a camera, and performs predetermined image processing on the images. Thereby, the machine tool 100 detects that the minute substance is leaking into the external space SP2 of the machine tool 100 .
- Any image processing program can be employed to detect micro-matter leaks.
- the machine tool 100 acquires in advance a background image that does not contain minute substances.
- the machine tool 100 acquires an input image obtained by photographing the machine tool 100 from the same viewpoint as the background image, the background image is subtracted from the input image.
- the machine tool 100 obtains a background difference image obtained by removing the background from the input image.
- Machine tool 100 extracts a region having a pixel value equal to or greater than a predetermined value from the background difference image.
- the machine tool 100 determines that the minute substance is leaking into the external space SP2 when the size of the area exceeds a predetermined threshold.
- the machine tool 100 determines that the minute substance has not leaked into the external space SP2 when the size of the area is equal to or less than the predetermined threshold.
- the machine tool 100 uses the learned model to detect leakage of minute substances.
- a trained model is generated in advance by a learning process using a learning data set.
- the training data set includes a plurality of training images showing leaking minute substances. Also, each learning image is associated with a label indicating whether or not a leaking minute substance is shown.
- the internal parameters of the trained model are optimized in advance by learning processing using such a learning data set.
- CNN convolutional neural network
- FCN full-layer convolutional neural network
- support vector machine etc.
- the machine tool 100 inputs images obtained from the mist sensor 80 as a camera into the learned model. As a result, the learned model outputs the probability that the minute substance leakage is captured. The machine tool 100 determines that the minute substance is leaking into the external space SP2 when the probability exceeds a predetermined threshold. On the other hand, when the probability is equal to or less than the predetermined threshold, the machine tool 100 determines that the minute substance has not leaked into the external space SP2.
- the mist collector 40 starts collecting minute substances. As a result, the machine tool 100 can quickly suppress the leakage of minute substances to the external space SP2.
- the machine tool 100 has the mist sensor 80 outside the processing area AR2, and detects minute substances that have flowed from the processing area AR1 to the outside processing area AR2.
- the machine tool 100 starts collection processing of minute substances by the mist collector 40 based on detection of the minute substances by the mist sensor 80 .
- the process of collecting minute substances by the mist collector 40 is not executed until the minute substances are detected outside the processing area AR2.
- the frequency of execution of the collection process by the mist collector 40 is reduced, and the power consumption of the mist collector 40 can be reduced.
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Abstract
Description
図1を参照して、実施の形態に従う工作機械100について説明する。図1は、工作機械100の外観を示す図である。
次に、図2および図3を参照して、工作機械100の内部構成について説明する。図2は、工作機械100内の様子を表わす図である。図3は、図2とは異なる方向から工作機械100内の様子を表わす図である。
次に、図4を参照して、工作機械100における各種の駆動機構について説明する。図4は、工作機械100における駆動機構の構成例を示す図である。
次に、図5を参照して、ミストコレクタ40内の内部構造について説明する。図5は、図1に示されるミストコレクタ40の断面図を示す図である。
次に、図6および図7を参照して、工作機械100に備えられる回収機構150について説明する。図6は、回収機構150の外観を示す図である。図7は、回収機構150の断面を示す図である。
次に、図8を参照して、工作機械100内におけるミストセンサ80の設置場所について説明する。図8は、ミストセンサ80の設置場所の一例を説明するための図である。
次に、図9~図12を参照して、工作機械100の機能構成について説明する。図9は、工作機械100の機能構成の一例を示す図である。
まず、取得部152の機能について説明する。取得部152は、上述のCPUユニット20に実装されてもよいし、上述のCNCユニット30に実装されてもよい。
次に、図9に示されるミストコレクタ制御部154の機能について説明する。ミストコレクタ制御部154は、上述のCPUユニット20に実装されてもよいし、上述のCNCユニット30に実装されてもよい。
次に、図13を参照して、図4に示されるCPUユニット20のハードウェア構成について説明する。図13は、CPUユニット20のハードウェア構成の一例を示す図である。
次に、図14を参照して、図4に示されるCNCユニット30のハードウェア構成について説明する。図14は、CNCユニット30のハードウェア構成の一例を示す図である。
次に、図15を参照して、ミストコレクタ40の制御フローについて説明する。図15は、工作機械100の制御部50が実行する処理の一部を表わすフローチャートである。
次に、図16を参照して、工作機械100の変形例について説明する。図16は、ミストセンサ80の設置場所の他の例を説明するための図である。
以上のように、工作機械100は、加工エリア外AR2にミストセンサ80を有し、加工エリアAR1から加工エリア外AR2に流れた微小物質を検出する。工作機械100は、当該ミストセンサ80によって微小物質が検出されたことに基づいて、ミストコレクタ40による微小物質の収集処理を開始する。これにより、ミストコレクタ40による微小物質の収集処理は、加工エリア外AR2において微小物質が検出されるまで実行されない。結果として、ミストコレクタ40による収集処理の実行頻度が減り、ミストコレクタ40の消費電力量を削減することができる。
Claims (7)
- 工作機械であって、
前記工作機械の機内において加工エリアを区画形成するためのカバー体と、
前記加工エリアにクーラントを吐出するための吐出部と、
前記吐出部が前記加工エリアにクーラントを吐出することにより発生した気中の物質を収集するためのミストコレクタと、
前記加工エリア外に設けられており、前記物質を検出するためのセンサと、
前記センサによって前記物質が検出されたことに基づいて、前記ミストコレクタによる前記物質の収集処理を開始するためのミストコレクタ制御部とを備える、工作機械。 - 前記センサは、前記工作機械の機内で、かつ、前記加工エリア外に設けられている、請求項1に記載の工作機械。
- 前記工作機械は、さらに、前記吐出部から前記加工エリアに吐出されたクーラントを回収するための回収機構を備え、前記回収機構は、前記工作機械の機内において前記加工エリアと繋がっており、
前記センサは、前記回収機構の内部に設けられている、請求項2に記載の工作機械。 - 前記センサは、前記工作機械の機外に設けられている、請求項1に記載の工作機械。
- 前記ミストコレクタ制御部は、前記センサによって前記物質が検出されなくなったことに基づいて、前記センサによって前記物質が検出されていた時よりも前記ミストコレクタによる単位時間当たりの前記物質の収集量が少なくなるように、前記ミストコレクタを制御する、請求項1~4のいずれか1項に記載の工作機械。
- 工作機械の制御方法であって、
前記工作機械は、
前記工作機械の機内において加工エリアを区画形成するためのカバー体と、
前記加工エリアにクーラントを吐出するための吐出部と、
前記吐出部が前記加工エリアにクーラントを吐出することにより発生した気中の物質を収集するためのミストコレクタと、
前記加工エリア外に設けられており、前記物質を検出するためのセンサとを備え、
前記制御方法は、
前記センサの出力を取得するステップと、
前記物質が検出されたことを前記出力が示す場合に、前記ミストコレクタによる前記物質の収集処理を開始するステップとを備える、制御方法。 - 工作機械の制御プログラムであって、
前記工作機械は、
前記工作機械の機内において加工エリアを区画形成するためのカバー体と、
前記加工エリアにクーラントを吐出するための吐出部と、
前記吐出部が前記加工エリアにクーラントを吐出することにより発生した気中の物質を収集するためのミストコレクタと、
前記加工エリア外に設けられており、前記物質を検出するためのセンサとを備え、
前記制御プログラムは、前記工作機械に、
前記センサの出力を取得するステップと、
前記物質が検出されたことを前記出力が示す場合に、前記ミストコレクタによる前記物質の収集処理を開始するステップとを実行させる、制御プログラム。
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