JP7179941B1 - Machine Tools - Google Patents

Abstract

A machine tool capable of enhancing visibility in a machining area by a simple operation is provided. A machine tool includes an operating body operable within a machining area, a coolant discharge device capable of discharging coolant within the machining area, an operation device 51 operated to command the operation of the machine tool, and a control device 71 for controlling the machine tool. While the workpiece machining program 74 is being executed, the control device 71 is instructed to pause the progress of the machining program 74 through the operation of the operating device 51, and recognizes the coolant control trigger associated with the operation of the operating device 51. In this case, the coolant discharge device is controlled so as to stop the coolant discharge. [Selection drawing] Fig. 6

Description

The present invention relates to machine tools.

For example, Japanese Patent Application Laid-Open No. 2008-18472 (Patent Document 1) discloses a main spindle for cutting a work, and an air flow that is attached to one end of the main spindle to rotate the main spindle and generate an air flow toward the work. A machine tool is disclosed that includes a propeller fan for removing cutting fluid adhering to the .

Further, Japanese Patent Application Laid-Open No. 2007-90484 (Patent Document 2) discloses a plurality of processing machines, a washing machine for washing a workpiece machined by the processing machine, a washing water tank containing washing water, and a washing machine. Prior to washing with a washing machine, a rough washing machine that supplies and circulates the washing water in the washing water tank to wash the work, and a replenishment that selectively replenishes the washing water in the washing water tank to multiple coolant tanks. A machining system comprising means is disclosed.

Further, Japanese Patent Application Laid-Open No. 2015-85403 (Patent Document 3) discloses a nozzle having a coolant passage, a motor for rotating the nozzle, a coolant supply source connected to the coolant passage via a coolant supply valve, and an air supply. A coolant injector is disclosed that includes an air supply connected to the coolant passage through a valve.

JP-A-2008-18472 JP 2007-90484 A JP 2015-85403 A

As disclosed in the above patent documents, machine tools are known that machine a workpiece while discharging coolant in a machining area. In such a machine tool, in situations such as trial machining of a workpiece that is performed before continuous machining, while temporarily stopping the operation of the moving body such as the tool post, the tool spindle, the table, or the workpiece spindle, in the machining area: In some cases, the machined surface of the workpiece or the positional relationship between the workpiece and the cutting edge of the tool may be checked.

However, if the coolant is still being discharged, the visibility of the workpiece or the tool in the machining area is lowered, so the confirmation work cannot be performed smoothly. Also, a method in which the operator operates a button or the like to stop the discharge of the coolant is conceivable, but in this case, the operator is forced to perform complicated operations.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above problems, and to provide a machine tool capable of improving visibility in a machining area by a simple operation.

A machine tool according to one aspect of the present invention comprises an operating body operable within a machining area, a coolant discharge device capable of discharging coolant within the machining area, and a machine tool operated to command the operation of the machine tool. It comprises an operating device and a control device for controlling the machine tool. While the machining program for the workpiece is being executed, the control device is instructed to suspend the progress of the machining program through the operation of the operating device, and when it recognizes the coolant control trigger associated with the operation of the operating device, the coolant Control the coolant dispenser to stop dispensing. The operating device includes a first operating unit that is operated to command a temporary stop of motion of the action body. In the control device, when the first operation unit is operated by a method in which the first operation unit is continuously operated for more than a specified time, the first operation unit operates the first operation unit so that the action of the action body is stopped. When the first operation unit is operated again after a temporary stop, or after the control device temporarily stops the action of the action object due to the operation of the first operation unit, a specified time elapses If it is determined that the specified time has passed, the coolant control trigger is recognized.
A machine tool according to another aspect of the present invention includes an operating body operable within a machining area, a coolant discharge device capable of discharging coolant within the machining area, and a machine tool operated to command the operation of the machine tool. It comprises an operating device and a control device for controlling the machine tool. While the machining program for the workpiece is being executed, the control device is instructed to suspend the progress of the machining program through the operation of the operating device, and when it recognizes the coolant control trigger associated with the operation of the operating device, the coolant Control the coolant dispenser to stop dispensing.

According to the machine tool configured in this way, it is possible to stop the discharge of coolant in the machining area when checking the inside of the machining area while stopping the operation of the operating body. At this time, the coolant control trigger, which serves as an opportunity to stop the coolant discharge, accompanies the operation of the operating device for temporarily stopping the progress of the machining program, so the operation for stopping the coolant discharge can be simplified. Therefore, it is possible to improve the visibility in the processing area by a simple operation.

Further, preferably, the operation device includes a first operation unit that is operated to command a temporary stop of the action of the action body. The control device recognizes the coolant control trigger when the first operation unit is operated in a predetermined first operation method.

According to the machine tool configured as described above, since the operation for stopping the coolant discharge is performed by the first operation unit operated to command the temporary stop of the operation of the operating body, the coolant discharge is stopped. can be easily stopped.

Further, preferably, the first operation method is a method of continuing to operate the first operation unit for more than a prescribed time, or a method of temporarily stopping the action of the action body by operating the first operation unit, and then pressing the first operation unit. is a method of manipulating again.

According to the machine tool configured in this way, the operation for stopping the discharge of coolant can be simplified.

Further, preferably, the operation device includes a first operation section operated to command a pause of the action of the action body, and a second operation section operated to command a speed change of the action of the action body. . The control device recognizes the coolant control trigger when a specified time elapses after the operation of the action body is temporarily stopped by operating the first operating section or the second operating section.

According to the machine tool configured in this way, it is possible to eliminate the need for an operation to stop the discharge of coolant.

Moreover, preferably, the machine tool further includes an air ejection device capable of ejecting air toward the workpiece or the tool within the machining area. When the control device is instructed to pause the progress of the machining program through the operation of the operating device while the machining program for the workpiece is being executed and recognizes the air control trigger associated with the operation of the operating device, the air is turned on. Control the air delivery device to initiate delivery.

According to the machine tool configured in this way, when checking the inside of the machining area while stopping the operation of the operating body, air is discharged toward the workpiece or the tool, so that the workpiece or the tool in the machining area is inspected. visibility can be improved. At this time, the air control trigger, which is the trigger for starting the air discharge, accompanies the operation of the operation device for temporarily stopping the progress of the machining program, so the operation for starting the air discharge can be simplified.

Further, preferably, the operation device includes a first operation unit that is operated to command a temporary stop of the action of the action body. The control device recognizes the air control trigger when the first operation unit is operated in a predetermined second operation method.

According to the machine tool configured as described above, since the operation for starting the air discharge is performed by the first operation unit operated to command the temporary stop of the operation of the action body, the air discharge is performed. can be easily started.

Further, preferably, the second operation method is a method of continuing to operate the first operation unit for more than a prescribed time, or a method of temporarily stopping the action of the action body by operating the first operation unit, and then pressing the first operation unit. is a method of manipulating again.

According to the machine tool configured in this way, the operation for starting air discharge can be simplified.

Further, preferably, the operation device includes a first operation section operated to command a pause of the action of the action body, and a second operation section operated to command a speed change of the action of the action body. . The control device recognizes the air control trigger when a specified time elapses after the motion of the action body is temporarily stopped by operating the first operating section or the second operating section.

According to the machine tool configured in this way, it is possible to eliminate the need for an operation for starting air discharge.

Further, preferably, the operation device includes a first operation unit that is operated to command a temporary stop of the action of the action body. The control device simultaneously recognizes the coolant control trigger and the air control trigger when the first operation unit is operated in a predetermined operation method.

According to the machine tool configured in this manner, the operation for stopping the discharge of coolant and starting the discharge of air can be simplified.

Further, preferably, the operation device includes a first operation unit that is operated to command a temporary stop of the action of the action body. The control device recognizes the coolant control trigger when the first operation unit is operated in a predetermined first operation method, and recognizes the coolant control trigger when the first operation unit is operated in a predetermined second operation method. , to recognize air control triggers. The first operating method and the second operating method are the same method.

According to the machine tool configured in this manner, the operation for stopping the discharge of coolant and starting the discharge of air can be simplified.

Further, preferably, the control device controls the coolant discharge device so as to restart discharge of the coolant when the operation of the operation device is instructed to cancel the temporary stop of the movement of the action body.

According to the machine tool configured in this way, it is possible to eliminate the need for an operation for restarting coolant discharge.

Further, preferably, the operation device includes a third operation unit that is operated to command release of the pause of the action of the action body. When the control device is instructed to suspend the action of the action body through the operation of the operating device, and after stopping the discharge of the coolant, it is ordered to cancel the pause of the action of the action body through the operation of the operating device. , the discharge of the coolant is resumed, and after the discharge of the coolant is restarted, when the third operation unit is operated, the temporary stop of the operation of the operating body is released.

According to the machine tool configured in this way, the operation for restarting coolant discharge can be simplified.

Also preferably, the operating body is a tool post, a tool spindle, a table, or a work spindle.

According to the machine tool configured in this way, when checking the inside of the machining area while stopping the operation of the tool post, tool spindle, table or work spindle, the visibility inside the machining area can be improved by a simple operation. can be enhanced.

As described above, according to the present invention, it is possible to provide a machine tool capable of enhancing the visibility in the machining area with a simple operation.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the machine tool in embodiment of this invention. FIG. 2 is a cross-sectional view schematically showing the machine tool in FIG. 1; It is a figure which shows the operating device (lower panel) in FIG. It is a figure which shows an example of the scene of trial machining of a workpiece|work. FIG. 11 is another diagram showing an example of a scene of trial machining of a work; 2 is a block diagram showing a control system in the machine tool in FIG. 1; FIG. 2 is a flow chart showing the flow of trial machining of a workpiece in the machine tool shown in FIG. 1; FIG. 8 is a flow chart showing a first modified example of the flow of trial machining of the workpiece in FIG. 7; FIG. FIG. 8 is a flow chart showing a second modified example of the flow of trial machining of the workpiece in FIG. 7; FIG. FIG. 8 is a flow chart showing a third modified example of the flow of trial machining of the workpiece in FIG. 7; FIG. FIG. 8 is a flow chart showing a fourth modification of the flow of trial machining of the workpiece in FIG. 7; FIG. FIG. 8 is a flow chart showing a fifth modified example of the flow of trial machining of the workpiece in FIG. 7; FIG.

An embodiment of the invention will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members are given the same numbers.

FIG. 1 is a perspective view showing a machine tool according to an embodiment of the invention. 2 is a cross-sectional view schematically showing the machine tool in FIG. 1. FIG.

Referring to FIGS. 1 and 2, machine tool 100 is a machining center that processes a workpiece by bringing a rotating tool into contact with the workpiece. More specifically, the central axis of rotation of the tool extends horizontally. It is a horizontal machining center. 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.

In the figure, the Z-axis parallel to the horizontal direction and parallel to the center axis of rotation of the tool, the X-axis parallel to the horizontal direction and perpendicular to the center axis of rotation of the tool, and the Y-axis is shown.

First, the overall structure of machine tool 100 will be described. The machine tool 100 has a cover body 21 . The cover body 21 defines the machining area 120 and forms the appearance of the machine tool 100 .

The machining area 120 is a space in which the workpiece is machined, and is sealed so that foreign matter such as chips or coolant that accompanies the machining of the workpiece does not leak out of the machining area 120 .

The cover body 21 has a first cover 23 , a second cover 24 , a ceiling cover 22 and a front door 25 .

The first cover 23 and the second cover 24 are arranged facing each other in the X-axis direction. A tool magazine (not shown) for storing tools is provided on the opposite side of the processing area 120 with the second cover 24 interposed therebetween. The ceiling cover 22 is arranged on the ceiling of the machine tool 100 . The ceiling cover 22 is arranged above the processing area 120 .

An opening 26 is provided in the first cover 23 . The opening 26 opens the processing area 120 to the outside space. The front door 25 is provided at the opening 26 . The front door 25 is operable between an open position for opening the opening 26 and a closed position for closing the opening 26 (the position of the front door 25 shown in FIG. 1).

The machine tool 100 further has an operating device 51 . The operating device 51 is operated to command the operation of the machine tool 100 . The operating device 51 is provided outside the processing area 120 . The operating device 51 is attached to the first cover 23 . The operating device 51 is provided adjacent to the opening 26 .

The operating device 51 has an upper panel 52 , a lower panel 53 and a hinge portion 54 . The hinge portion 54 extends on the axis of the rotation center shaft 130 . The upper panel 52 and the lower panel 53 are connected to each other via the hinge portion 54 . The upper panel 52 is rotatable about the rotation center shaft 130 with respect to the lower panel 53 .

The upper panel 52 includes a touch screen that displays manuals or various application screens and is operated when using applications. The lower panel 53 includes a touch screen that displays the operating state of the machine tool 100 or the machining state of the workpiece, a touch screen that is operated when the machine tool 100 is operated, and buttons or switches that are operated when the machine tool 100 is operated. including an operation unit such as

Machine tool 100 further includes bed 14 . The bed 14 is a base member for supporting a tool spindle 12, a table 16, etc., which will be described later, and is installed on the floor of a factory or the like. The bed 14 is made of metal such as casting.

The machine tool 100 further has an operating body 11 . The operating body 11 is provided within the processing area 120 . The operating body 11 is operable within the processing area 120 . The operating body 11 includes a tool spindle 12 and a table 16 .

The tool spindle 12 is rotatable around a rotation center axis 110 parallel to the Z-axis by motor drive. The tool spindle 12 incorporates a clamp mechanism for detachably holding the tool. The tool spindle 12 rotates a tool such as a drill, reamer, or milling cutter around a rotation center axis 110 . The tool spindle 12 is supported on a bed 14 by a column or the like (not shown). The tool spindle 12 can be moved in the X-axis direction and the Y-axis direction by various feed mechanisms, guide mechanisms, servomotors, etc. provided on a column or the like.

A table 16 is a device for holding a work. A pallet P is detachably attached to the table 16 . On the pallet P, for example, jigs such as tombstones to which works are attached are mounted. The table 16 can be moved in the Z-axis direction by various feed mechanisms, guide mechanisms, servo motors, and the like provided on the bed 14 and the like. The table 16 can be turned around a turning center axis 160 parallel to the Y-axis by motor drive.

The machine tool 100 further has a coolant discharge device 31 . The coolant discharge device 31 can discharge coolant within the machining area 120 .

The coolant discharge device 31 has a coolant tank 32 , a first coolant pump 33 , a second coolant pump 34 , a spindle coolant discharge portion 36 and a ceiling coolant discharge portion 37 .

The coolant tank 32 consists of a box that can store coolant. Coolant tank 32 is placed on the floor of a factory or the like where machine tool 100 is installed. Coolant is stored in the coolant tank 32 . The coolant tank 32 is configured to be able to collect coolant from within the machining area 120 .

The first coolant pump 33 and the second coolant pump 34 are provided in the coolant tank 32 . The first coolant pump 33 and the second coolant pump 34 send coolant stored in the coolant tank 32 toward the processing area 120 as they are driven.

The coolant from the first coolant pump 33 is supplied to the main shaft coolant discharge portion 36 . The spindle coolant discharge part 36 is provided on the tool spindle 12 . The spindle coolant discharge part 36 discharges coolant from, for example, a nozzle attached to the housing of the tool spindle 12 . The main spindle coolant discharge part 36 is mainly intended to suppress heat generation at the machining point of the workpiece and to lubricate between the workpiece and the tool by supplying coolant to the machining point of the workpiece.

The coolant from the second coolant pump 34 is supplied to the ceiling coolant discharge portion 37 . The ceiling coolant discharge part 37 discharges coolant from a nozzle attached to the ceiling cover 22 . The purpose of the ceiling coolant discharge part 37 is mainly to discharge chips generated by machining the workpiece from the machining area 120 by supplying coolant from the ceiling cover 22 to the entire machining area 120 .

The machine tool 100 further has an air ejection device 41 . The air ejection device 41 can eject air toward the workpiece or tool within the machining area 120 .

The air ejection device 41 has a compressor 42 , an air valve 43 and an air ejection portion 44 . Compressor 42 delivers compressed air as it is driven.

Air from the compressor 42 is supplied to the air discharge portion 44 . The air discharge part 44 discharges air from a nozzle attached to the housing of the tool spindle 12, for example. The air valve 43 is provided on an air flow path extending between the compressor 42 and the air discharge portion 44 . The air valve 43 controls the flow of air supplied from the compressor 42 toward the air discharge portion 44 .

Next, the operating device 51 will be described in detail. 3 is a diagram showing the operating device (lower panel) in FIG. 1. FIG. Referring to FIG. 3 , operating device 51 (lower panel 53 ) has a first operating section 61 , a second operating section 62 and a third operating section 63 .

The first operation unit 61 is operated to command the motion of the action body 11 to pause. The first operation unit 61 consists of buttons that can be pressed. The first operation unit 61 is operated (depressed) to command a temporary stop of movement of the tool spindle 12 in the X-axis direction and the Y-axis direction and a temporary stop of movement of the table 16 in the Z-axis direction.

The second operation unit 62 is operated to command the speed change of the action of the action body 11 . The second operation unit 62 is composed of a rotatable dial switch. The second operating portion 62 is operated (rotated) to adjust the rapid traverse speed of the tool spindle 12 in the X-axis direction and the Y-axis direction and the rapid traverse speed of the table 16 in the Z-axis direction.

The third operation unit 63 is operated to command release of the temporary stop of the action of the action body 11 . The third operation unit 63 is composed of buttons that can be pressed. The third operation unit 63 is operated (pressed down) to command release of the temporary stop of movement of the tool spindle 12 in the X-axis direction and the Y-axis direction, and release of the temporary stop of movement of the table 16 in the Z-axis direction. ) is done.

The first operation unit 61 is an operation unit for temporarily stopping axial movement of the operating body 11 during execution of the machining program, and is also called a feed hold button. The second operating section 62 is an operating section for changing (increasing, decelerating, and stopping) the fast-forwarding speed of the action body 11, and is also called a fast-forwarding override switch. The third operation unit 63 is an operation unit for starting a machining program and canceling the temporary stoppage of the action body 11 by operating the first operation unit 61, and is also called a start button.

The operating device 51 (lower panel 53) is further provided with a touch screen 56, a feed override switch 64 operated to adjust the cutting feed speed of the operating body 11, an emergency stop button 65, a power button 67, and the like. ing.

The operation device in the present invention is not limited to the operation panel type attached to the machine tool like the operation device 51 described above, and may be a pendant type that can be operated at a position away from the machine tool.

Next, a method of controlling the machine tool 100 in trial machining of a workpiece will be described. 4 and 5 are diagrams showing an example of a scene of trial machining of a work. With reference to FIGS. 4 and 5, after a program check is performed by air cutting or the like, trial machining of the workpiece W is performed before starting continuous machining of the workpiece W. As shown in FIG. In the trial machining of the workpiece W, the movement of the operating body 11 is temporarily stopped at appropriate timing to check the state of the machining surface 210 of the workpiece W and the positional relationship between the workpiece W and the cutting edge of the tool T. or

In FIG. 5, the cutting feed section of the tool T is indicated by a two-dot chain line, and the rapid feed section of the tool T is indicated by a solid line. For example, during rapid feed of the tool T, the rapid feed of the tool T is temporarily stopped by pressing the first operation portion 61 (feed hold button) at the position indicated by the tool T'. The operator checks the positional relationship between the workpiece W and the cutting edge of the tool T in the machining area 120 to confirm whether the depth of cut of the tool T in the next machining is appropriate.

6 is a block diagram showing a control system in the machine tool in FIG. 1. FIG. Referring to FIG. 6, machine tool 100 further has a control device 71 . A control device 71 controls the machine tool 100 . The control device 71 is installed in the machine tool 100 and is housed in a control panel for controlling various operations in the machine tool 100 .

The control device 71 has a storage section 72 and a control section 73 . Storage unit 72 is, for example, a storage medium such as a hard disk or flash memory.

The storage unit 72 stores a machining program 74 and a PLC (Programmable Logic Controller) program 75 . The machining program 74 defines various commands for machining a workpiece, is created by an operator of the machine tool 100 , and is input to the storage unit 72 . The machining program 74 is written in, for example, an NC (Numerical Control) program. The PLC program 75 defines commands for controlling various devices provided in the machine tool 100 and is designed in advance. The PLC program 75 is written in, for example, a ladder program.

The control unit 73 controls various devices provided in the machine tool 100 (tool spindle rotation motor 85, tool spindle feed motor 86, table feed motor 87, first coolant pump 33, second coolant pump 34, air valve 43).

The control unit 73 has a machining program execution unit 76 , an operation command unit 77 , a tool spindle control unit 81 , a table control unit 82 , a coolant discharge device control unit 83 and an air discharge device control unit 84 .

The machining program execution unit 76 reads commands of the machining program 74 and outputs control signals to each of the tool spindle control unit 81, the table control unit 82, the coolant discharge device control unit 83, and the air discharge device control unit.

The tool spindle control unit 81 receives a control signal from the machining program execution unit 76, and operates a tool spindle rotation motor 85 for rotating the tool spindle 12, and moves the tool spindle 12 in the X-axis direction and the Y-axis direction. It controls the tool spindle feed motor 86 for The table control unit 82 receives a control signal from the machining program execution unit 76 and controls a table feed motor 87 for moving the table 16 in the Z-axis direction.

The coolant discharge device control unit 83 receives a control signal from the machining program execution unit 76, and controls the first coolant pump 33 for supplying coolant toward the spindle coolant discharge unit 36 and the ceiling coolant discharge unit 37. controls a second coolant pump 34 for supplying coolant. The air ejection device control section 84 receives a control signal from the machining program execution section 76 and controls the air valve 43 for permitting or blocking the air flow toward the air ejection section 44 .

The operation device 51 generates an operation signal corresponding to the operation in the operation device 51 and outputs the operation signal to the operation command section 77 . The operation command unit 77 outputs commands of the PLC program 75 to the machining program execution unit 76 based on the operation signal from the operation device 51 .

For example, the operation command unit 77 outputs a start command of the machining program 74 to the machining program execution unit 76 when the third operation unit 63 (start button) is pressed. The machining program execution unit 76 starts executing the machining program 74 when receiving a start command from the operation command unit 77 .

While the machining program 74 is being executed, the motion command unit 77 issues a temporary stop command for movement of the operating body 11 (tool spindle 12/table 16) when the first operation unit 61 (feed hold button) is pressed. Output to the tool spindle control section 81/table control section 82 . The tool spindle control section 81/table control section 82 controls the tool spindle feed so that the movement of the operating body 11 (tool spindle 12/table 16) is temporarily stopped when a pause command from the motion command section 77 is received. It controls the motor 86/table feed motor 87. When the third operating unit 63 (start button) is pressed while the operating body 11 is temporarily stopped, the motion command unit 77 issues a command to resume movement of the operating body 11 through the tool spindle control unit 81/table control unit 82. output to The tool spindle control section 81/table control section 82 controls the tool so that the temporary stop of the movement of the operating body 11 (tool spindle 12/table 16) is canceled when a restart command is received from the operation command section 77. It controls the spindle feed motor 86/table feed motor 87.

FIG. 7 is a flow chart showing the flow of trial machining of a workpiece in the machine tool shown in FIG. 4 to 7, the control device 71 is instructed to temporarily stop the progress of the machining program 74 through the operation of the operation device 51 while the workpiece machining program 74 is being executed. When the coolant control trigger associated with the operation of (1) is recognized, the coolant discharge device 31 is controlled to stop discharging the coolant.

More specifically, the operation command unit 77 stops the coolant when the first operation unit 61 (feed hold button) is operated in a predetermined first operation method while the machining program 74 is being executed. A command is output to the coolant discharge device control section 83 . The first operation method is a method of continuing to operate (hold down) the first operation unit 61 beyond a prescribed time. The coolant discharge device control section 83 controls the coolant discharge device 31 so as to stop the first coolant pump 33 and the second coolant pump 34 by recognizing the coolant stop command from the operation command section 77 as a coolant control trigger. .

Furthermore, while the workpiece machining program 74 is being executed, the control device 71 is instructed to temporarily stop the progress of the machining program 74 through the operation of the operating device 51, and also activates the air control trigger associated with the operation of the operating device 51. When it is recognized, it controls the air ejection device 41 so as to start ejection of air.

More specifically, the operation command unit 77 discharges air when the first operation unit 61 (feed hold button) is operated in a predetermined second operation method while the machining program 74 is being executed. is output to the air ejection device control section 84 . The second operation method is to keep operating (keep pressing) the first operation unit 61 beyond a prescribed time. The air ejection device control section 84 controls the air valve 43 so that the air flow toward the air ejection section 44 is permitted by recognizing the air ejection start command from the operation command section 77 as an air control trigger.

The first operation method for issuing the coolant stop command and the second operation method for issuing the air ejection start command are the same method. The control device 71 simultaneously recognizes the coolant control trigger and the air control trigger when the first operating portion 61 (feed hold button) is operated in the first/second operating method.

The control device 71 is instructed to temporarily stop the movement of the operating body 11 (tool spindle 12/table 16) through the operation of the operating device 51, stops discharging coolant, and starts discharging air. 51, when a command to release the temporary stop of movement of the operating body 11 (tool spindle 12/table 16) is issued, discharge of coolant is resumed and discharge of air is stopped. When the operation unit 63 (start button) is operated, the temporary stop of movement of the action body 11 (tool spindle 12/table 16) is released.

As shown in FIG. 7, the control device 71 moves the tool spindle 12 and/or the table 16 while discharging coolant from the spindle coolant discharge section 36 and the ceiling coolant discharge section 37 according to the machining program 74 (S101). . As a result, a machined surface 210 is formed on the workpiece W, and the tool T is moved toward the initial position for the next machining.

Next, the operator operates the first operation unit 61 (feed hold button) (S102). The control device 71 temporarily stops the movement (fast forward) of the tool spindle 12 and/or the table 16 (S103).

Next, the control device 71 (operation command section 77) determines whether or not the operating time (pressing time) of the first operating section 61 (feed hold button) exceeds a specified time (S104). The specified time may be, for example, 2 seconds or 3 seconds.

Next, in step S104, when the control device 71 determines that the operation time (pressing time) of the first operation portion 61 (feed hold button) exceeds the specified time, the main shaft coolant discharge portion 36 and the ceiling Discharge of coolant from the coolant discharge portion 37 is stopped, and discharge of air from the air discharge portion 44 is started (S105). When the control device 71 determines in step S104 that the operation time (pressing time) of the first operation unit 61 (feed hold button) does not exceed the specified time, the process proceeds to step S108, which will be described later.

After the step of S105, the operator checks the state of the machining surface 210 of the work W and the positional relationship between the work W and the cutting edge of the tool T.

Next, the operator operates the third operation section 63 (start button) (S106). Next, the control device 71 restarts the discharge of coolant from the spindle coolant discharge portion 36 and the ceiling coolant discharge portion 37, and stops the discharge of air from the air discharge portion 44 (S107).

Next, the operator operates the third operation unit 63 (start button) again (S108). Next, the control device 71 causes the machining program 74 to proceed again by restarting the movement (fast forward) of the tool spindle 12 and/or the table 16 .

According to such a configuration, when checking the state of the machining surface 210 of the work W or checking the positional relationship between the work W and the cutting edge of the tool T after the step of S105, the spindle coolant Since the discharge of coolant from the discharge part 36 and the ceiling coolant discharge part 37 is stopped, and air is discharged from the air discharge part 44 toward the work W or the tool T, the blade edges of the work W and the tool T can be cleared. This facilitates the confirmation work.

In addition, the operator can stop not only the movement (rapid forwarding) of the tool spindle 12 and/or the table 16 but also the discharge of coolant by simply pressing the first operation unit 61 (feed hold button) for a long time. to start discharging air. Therefore, the worker can concentrate on the confirmation work without being forced to perform complicated work.

FIG. 8 is a flow chart showing a first modified example of the flow of trial machining of the workpiece in FIG. 4 to 6 and 8, in this modification, a first operation method for issuing a coolant stop command and a second operation method for issuing an air discharge start command are performed. 2, the first operation portion 61 (feed hold button) is operated to temporarily stop the movement of the moving body 11, and then the first operation portion 61 (feed hold button) is operated again.

As shown in FIG. 8, steps S201 to S205 are replaced with steps S101 to S105 in FIG. Steps S201, S202 and S203 correspond to steps S101, S102 and S103 in FIG. 7, respectively.

Following step S203, the operator operates the first operation unit 61 (feed hold button) again (S204). Next, the control device 71 stops the discharge of coolant from the spindle coolant discharge portion 36 and the ceiling coolant discharge portion 37, and starts the discharge of air from the air discharge portion 44 (S205). After that, the process continues to step S106 in FIG.

According to such a configuration, the movement (rapid feed) of the tool spindle 12 and/or the table 16 is stopped only by pressing the first operation portion 61 (feed hold button) twice, and the coolant is discharged. The discharge can be stopped and the discharge of air can be started.

FIG. 9 is a flow chart showing a second modification of the flow of trial machining of the workpiece in FIG. 4 to 6 and 9, in this modified example, the control device 71 causes the operation of the action body 11 to be temporarily stopped by operating the first operation portion 61 (feed hold button). After that, when the specified time has passed, the coolant control trigger and the air control trigger are recognized.

As shown in FIG. 9, steps S301 to S305 are interchanged with steps S101 to S105 in FIG. Steps S301, S302 and S303 correspond to steps S101, S102 and S103 in FIG. 7, respectively.

Following step S303, the control device 71 determines whether or not a specified time has elapsed after the movement of the tool spindle 12 and/or the table 16 has been temporarily stopped (S304). The specified time may be, for example, 2 seconds or 3 seconds.

Next, in step S304, when the control device 71 determines that the specified time has passed after the movement of the tool spindle 12 and/or the table 16 is temporarily stopped, the spindle coolant discharge section 36 and the ceiling coolant discharge section 37 The discharge of coolant from the air discharge portion 44 is stopped, and the discharge of air from the air discharge portion 44 is started (S305). After that, the process continues to step S106 in FIG.

If the control device 71 determines in step S304 that the specified time has not passed after the movement of the tool spindle 12 and/or the table 16 is temporarily stopped, it executes step S304 again.

According to such a configuration, it is possible to eliminate the need for an operation to stop coolant discharge and start air discharge.

In step S302, by operating the second operation unit 62 (rapid feed override switch) so that the rapid feed speed magnification becomes zero, in step S303, the tool spindle 12 and/or the table 16 is moved (rapid feed rate). ) may be paused. In this case, the temporary stop of the movement (rapid feed) of the tool spindle 12 and/or the table 16 is released by operating the second operating section 62 (rapid feed override switch) so as to increase the magnification of the rapid feed rate. Further, when the tool spindle 12 and/or the table 16 is moved by cutting feed at the timing when the confirmation work is to be performed, by operating the feed override switch 64 so that the cutting feed rate becomes zero, The movement (cutting feed) of the tool spindle 12 and/or the table 16 may be temporarily stopped.

FIG. 10 is a flow chart showing a third modification of the flow of trial machining of the workpiece in FIG. 4 to 6 and 10, in the present modification, control device 71 operates when first operation unit 61 (feed hold button) is operated in a predetermined first operation method. , the coolant control trigger is recognized, and the air control trigger is recognized when the first operation portion 61 (feed hold button) is operated in a predetermined second operation method. The first operating method and the second operating method are the same method.

As shown in FIG. 10, steps S401 to S407 are replaced with steps S101 to S105 in FIG. Steps S401, S402 and S403 correspond to steps S101, S102 and S103 in FIG. 7, respectively.

Following step S403, the operator operates the first operation unit 61 (feed hold button) again (S404). Next, the control device 71 stops the discharge of coolant from the spindle coolant discharge portion 36 and the ceiling coolant discharge portion 37 (S405).

Next, the operator operates the first operation unit 61 (feed hold button) again (S406). Next, the control device 71 starts discharging air from the air discharging section 44 (S407).

As described in this modified example, the operation for stopping the discharge of coolant and the operation for starting the discharge of air may be performed separately. In this case, the operation for stopping the discharge of coolant and the operation for starting the discharge of air are performed by the same method (pressing down the first operation unit 61), thereby suppressing complicated operations. can.

FIG. 11 is a flow chart showing a fourth modification of the flow of trial machining of the workpiece in FIG. 4 to 6 and 11, in this modification, the control device 71 temporarily stops the movement of the action body 11 by operating the first operation section 61 (feed hold button). Further, the coolant control trigger is recognized when the first specified time elapses, and the air control trigger is recognized when the second specified time elapses after the coolant discharge is stopped.

As shown in FIG. 11, steps S501 to S507 are replaced with steps S101 to S105 in FIG. Steps S501, S502 and S503 correspond to steps S101, S102 and S103 in FIG. 7, respectively.

Following the step of S503, the control device 71 determines whether or not the first specified time has elapsed after the movement of the tool spindle 12 and/or the table 16 is temporarily stopped (S504). The first specified time may be, for example, 2 seconds or 3 seconds.

Next, in step S504, when the control device 71 determines that the first specified time has passed after the movement of the tool spindle 12 and/or the table 16 is temporarily stopped, the spindle coolant discharge section 36 and the ceiling coolant discharge section Discharge of coolant from the portion 37 is stopped (S505). If the control device 71 determines in step S504 that the first specified time has not passed after the movement of the tool spindle 12 and/or the table 16 is temporarily stopped, it executes step S504 again.

Next, the control device 71 determines whether or not the second specified time has elapsed after the coolant discharge is stopped (S506). The second specified time may be, for example, 2 seconds or 3 seconds. The second specified time may be the same as the first specified time, may be shorter than the first specified time, or may be longer than the first specified time.

Next, when the control device 71 determines in step S506 that the second specified time has elapsed after the coolant discharge has stopped, the control device 71 causes the air discharge portion 44 to start discharging air (S507). After that, the process continues to step S106 in FIG.

If the control device 71 determines in step S506 that the second specified time has not elapsed after the coolant discharge has stopped, it executes step S506 again.

As will be described in this modified example, the timing for stopping the discharge of coolant and the timing for starting the discharge of air may be different.

In step S502, by operating the second operation unit 62 (rapid feed override switch) so that the rapid feed speed magnification becomes zero, in step S503, the tool spindle 12 and/or the table 16 is moved (rapid feed). ) may be paused.

FIG. 12 is a flow chart showing a fifth modified example of the flow of trial machining of the workpiece in FIG. 4 to 6 and 12, in this modification, the control device 71 cancels the temporary stop of the movement of the action body 11 by operating the third operation section 63 (start button). is commanded, the coolant ejection device 31 and the air ejection device 41 are controlled so as to restart coolant ejection and stop air ejection.

As shown in FIG. 12, steps S601 and S602 are replaced with steps S106 to S109 in FIG.

Following step S105 in FIG. 7, the operator operates the third operation unit 63 (start button) (S601). Next, the control device 71 causes the machining program 74 to proceed again by restarting the movement (fast forward) of the tool spindle 12 and/or the table 16 . Further, the control device 71 restarts the discharge of coolant from the spindle coolant discharge portion 36 and the ceiling coolant discharge portion 37, and stops the discharge of air from the air discharge portion 44 (S602).

As will be described in this modification, by operating the third operation unit 63 (start button), in addition to resuming the movement (rapid forwarding) of the tool spindle 12 and/or the table 16, coolant discharge is resumed and air is supplied. You may perform stop of discharge.

To summarize the configuration of the machine tool 100 according to the embodiment of the present invention described above, the machine tool 100 according to the present embodiment includes the operating body 11 that can move within the machining area 120 and the coolant inside the machining area 120. , an operating device 51 operated to command the operation of the machine tool 100 , and a control device 71 for controlling the machine tool 100 . While the workpiece machining program 74 is being executed, the control device 71 is instructed to pause the progress of the machining program 74 through the operation of the operating device 51, and recognizes the coolant control trigger associated with the operation of the operating device 51. In this case, the coolant discharge device 31 is controlled to stop discharging the coolant.

According to the machine tool 100 according to the embodiment of the present invention configured in this way, the visibility in the machining area 120 can be improved by a simple operation.

In addition, the machine tool in the present invention is not limited to a horizontal machining center. and an AM/SM hybrid processing machine capable of performing SM (subtractive manufacturing) processing.

Further, the operating body in the present invention is not limited to the tool spindle and table, and may be, for example, a work spindle or a tool post. The motion of the operating body in the present invention is not limited to movement (axial movement), and may be rotational motion or turning motion.

Further, in the present invention, when the operation device such as the first operation unit is operated while the dwell command of the machining program is being executed, the progress of the pause time of the machining program specified by the dwell command stops, Control is performed to stop the discharge of coolant.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the meaning and range of equivalents of the scope of the claims.

The present invention is mainly applied to NC (Numerical Control) machine tools.

11 operating body 12 tool spindle 14 bed 16 table 21 cover body 22 ceiling cover 23 first cover 24 second cover 25 front door 26 opening 31 coolant discharge device 32 coolant tank 33 1st coolant pump, 34 2nd coolant pump, 36 spindle coolant discharge part, 37 ceiling coolant discharge part, 41 air discharge device, 42 compressor, 43 air valve, 44 air discharge part, 51 operation device, 52 upper panel, 53 lower panel , 54 hinge portion, 56 touch screen, 61 first operation portion, 62 second operation portion, 63 third operation portion, 64 feed override switch, 65 emergency stop button, 67 power button, 71 control device, 72 storage portion, 73 Control unit 74 Machining program 75 PLC program 76 Machining program execution unit 77 Operation command unit 81 Tool spindle control unit 82 Table control unit 83 Coolant discharge device control unit 84 Air discharge device control unit 85 Tool spindle Rotary motor 86 Tool spindle feed motor 87 Table feed motor 100 Machine tool 110 Rotation center axis 120 Machining area 130 Rotation center axis 160 Rotation center axis 210 Machining surface P Pallet T Tool W Work .

Claims (6)

a machine tool,
an operating body operable within a processing area;
a coolant discharge device capable of discharging coolant within the machining area;
an operating device operated to command the operation of the machine tool;
a control device for controlling the machine tool;
When the control device is instructed to temporarily stop the progress of the machining program through the operation of the operating device while the machining program for the workpiece is being executed, and recognizes a coolant control trigger associated with the operation of the operating device , controlling the coolant discharge device to stop the discharge of coolant;
Equipped with an air ejection device capable of ejecting air toward the work or tool within the processing area,
When the control device is instructed to pause the progress of the machining program through the operation of the operating device while the machining program for the workpiece is being executed, and recognizes an air control trigger associated with the operation of the operating device , controlling the air discharge device to start discharging air;
The operation device includes a first operation unit operated to command a temporary stop of the movement of the action body,
The control device simultaneously recognizes the coolant control trigger and the air control trigger when the first operation unit is operated in a predetermined operation method. a machine tool,
an operating body operable within a processing area;
a coolant discharge device capable of discharging coolant within the machining area;
an operating device operated to command the operation of the machine tool;
a control device for controlling the machine tool;
When the control device is instructed to temporarily stop the progress of the machining program through the operation of the operating device while the machining program for the workpiece is being executed, and recognizes a coolant control trigger associated with the operation of the operating device , controlling the coolant discharge device to stop the discharge of coolant;
Equipped with an air ejection device capable of ejecting air toward the work or tool within the processing area,
When the control device is instructed to pause the progress of the machining program through the operation of the operating device while the machining program for the workpiece is being executed, and recognizes an air control trigger associated with the operation of the operating device , controlling the air discharge device to start discharging air;
The operation device includes a first operation unit operated to command a temporary stop of the movement of the action body and a second operation part operated to command a speed change of the movement of the action body,
The control device recognizes the air control trigger when a specified time elapses after the operation of the action body is temporarily stopped by operating the first operation section or the second operation section. machine. a machine tool,
an operating body operable within a processing area;
a coolant discharge device capable of discharging coolant within the machining area;
an operating device operated to command the operation of the machine tool;
a control device for controlling the machine tool;
When the control device is instructed to temporarily stop the progress of the machining program through the operation of the operating device while the machining program for the workpiece is being executed, and recognizes a coolant control trigger associated with the operation of the operating device , controlling the coolant discharge device to stop the discharge of coolant;
The operation device includes a first operation unit operated to command a temporary stop of the movement of the action body,
The control device is
When the first operation unit is operated in such a manner that the first operation unit is continuously operated beyond the specified time,
When the first operation unit is operated by operating the first operation unit to temporarily stop the action of the action body, and then operating the first operation unit again; or
The control device determines whether or not a specified time has elapsed after the action of the action body is temporarily stopped by operating the first operation unit, and if it is determined that the specified time has elapsed,
recognizing the coolant control trigger; and
Equipped with an air ejection device capable of ejecting air toward the work or tool within the processing area,
When the control device is instructed to pause the progress of the machining program through the operation of the operating device while the machining program for the workpiece is being executed, and recognizes an air control trigger associated with the operation of the operating device , controlling the air discharge device to start discharging air;
The operation device further includes a second operation unit operated to command a speed change of the operation of the action body,
The control device recognizes the air control trigger when a specified time elapses after the operation of the action body is temporarily stopped by operating the first operation section or the second operation section. machine. 4. The control device controls the coolant discharge device so as to restart discharge of coolant when the operation of the operating device is instructed to cancel the temporary stop of the operation of the operating body. The machine tool according to any one of 1. The operation device includes a third operation unit that is operated to command release of the pause of the action of the action body,
The control device is instructed to suspend the action of the action body through operation of the operating device, stops discharge of coolant, and then releases the pause of the action of the action body through operation of the operation device. Discharging the coolant is resumed when instructed, and after the resumption of the coolant dispensing, when the third operation unit is operated, the temporary stop of the operation of the operating body is released. 5. The machine tool according to any one of 4 . The machine tool according to any one of claims 1 to 5 , wherein the operating body is a tool post, tool spindle, table, or work spindle.

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