CN111722589A - Machine tool, determination method, and storage medium - Google Patents

Machine tool, determination method, and storage medium Download PDF

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Publication number
CN111722589A
CN111722589A CN201911354602.6A CN201911354602A CN111722589A CN 111722589 A CN111722589 A CN 111722589A CN 201911354602 A CN201911354602 A CN 201911354602A CN 111722589 A CN111722589 A CN 111722589A
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Prior art keywords
amplification factor
signal
unit
image signal
machine tool
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CN201911354602.6A
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CN111722589B (en
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金子智博
芳贺大辅
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Brother Industries Ltd
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Brother Industries Ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/18Numerical 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
    • G05B19/4093Numerical 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 characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/0009Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/31From computer integrated manufacturing till monitoring
    • G05B2219/31047Display image of finished workpiece on screen, show how, where to mount next part

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geometry (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Numerical Control (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

The present invention relates to a machine tool, a determination method, and a storage medium for determining an amplification factor of an amplitude of an image signal. The machine tool fixes a control plate and an operation plate on the outer side of a machine tool body for performing machining. The transmission line connects the control board with the operation board. The signal output section of the control board outputs an image signal via a transmission line. The equalizer of the operation panel amplifies the amplitude of the image signal and outputs the amplified image signal to the display unit. The display unit displays an image of the image signal. The operation control unit determines the amplification factor of the amplification by the equalizer based on length information indicating the length of the transmission line.

Description

Machine tool, determination method, and storage medium
Technical Field
The present invention relates to a machine tool, a determination method, and a storage medium for determining an amplification factor of an amplitude of an image signal.
Background
The machine tool machines the workpiece. The machine tool disclosed in japanese laid-open patent publication No. 2016-49575 includes a machine tool body for performing machining, a signal output device, and a display. The signal output device is fixed on one side of the machine tool body, and the display device is fixed on the other side of the machine tool body. The signal outputter outputs an image signal to a display. The display displays an image based on the image signal output by the signal output device. The display notifies various information to the worker.
And the transmission line of the machine tool is used for connecting the signal output device with the display. The signal outputter outputs an image signal to the display via the transmission line. When the image signal is transmitted in the transmission line, the amplitude of the image signal is attenuated. Therefore, the machine tool is provided with an amplifier for amplifying the amplitude of the image signal. The display displays an image based on the image signal amplified by the amplifier.
Manufacturers manufacture various machine tools having machine tool bodies with different widths, i.e., different distances between the signal output devices and the display devices. The length of the transmission line is different according to the width of the machine tool main body. The longer the transmission line, the more greatly the amplitude of the image signal is attenuated. Therefore, there is a possibility that a problem may occur when the amplification factor amplified by the amplifier is fixed regardless of the length of the transmission line. When the width of the machine tool main body is large, the amplitude of the image signal is small, and therefore the display may not be able to read the image signal. When the width of the machine tool body is small, an image signal having an amplitude exceeding the amplitude that can be input to the display may enter the display. Therefore, the machine tool has a problem that an image signal cannot be accurately displayed.
Disclosure of Invention
The invention aims to provide a machine tool, a determination method and a storage medium for appropriately determining an amplification factor related to the amplitude of an image signal.
In the machine tool according to claim 1, a signal output device for outputting an image signal and a display device for displaying an image based on the image signal output by the signal output device are fixed to an outer side of a machine tool main body in which machining is performed, and the machine tool includes: a transmission line connecting the signal output device with the display and transmitting the image signal; an amplifier that amplifies an amplitude of the image signal; a storage unit that stores length information indicating a length of the transmission line; and a determination unit that determines an amplification factor to be amplified by the amplifier based on the length information stored in the storage unit.
In the machine tool according to claim 2, the number of amplifiers is 2 or more, the signal output device and the display device each have an amplifier, and the determination unit determines the amplification factor at which the amplifier provided in each of the signal output device and the display device amplifies the signal.
In the machine tool according to claim 3, the signal output device includes: a storage unit; a determination unit; and a transmission unit that transmits an amplification factor signal indicating the amplification factor determined by the determination unit, the display including: an amplifier; a reception unit that receives the amplification signal transmitted by the transmission unit; and a setting unit that sets an amplification factor at which the amplifier of the display amplifies to an amplification factor indicated by the amplification factor signal received by the receiving unit.
In the determination method according to claim 4, the computer acquires length information indicating a length of a transmission line of a machine tool in which a signal output device for outputting an image signal and a display device for displaying an image based on the image signal output by the signal output device are fixed to an outer side of a machine tool main body in which machining is performed, and the transmission line for transmitting the image signal connects the signal output device and the display device; the computer determines an amplification factor related to amplification of the amplitude of the image signal by the amplifier based on the acquired length information.
The storage medium according to claim 5 is a non-transitory storage medium in which a computer program is stored so as to be readable, the computer program causing a computer to execute: acquiring length information indicating a length of a transmission line of a machine tool in which a signal outputter for outputting an image signal and a display for displaying an image based on the image signal output by the signal outputter are fixed to an outer side of a machine tool main body in which machining is performed, and the transmission line for transmitting the image signal connects the signal outputter with the display; based on the acquired length information, an amplification factor related to amplification of the amplitude of the image signal by the amplifier is determined.
The signal output device, the display, and the like appropriately determine the amplification factor of amplification by the amplifier based on the length information indicating the length of the transmission line. The longer the transmission line, the greater the magnification. The shorter the transmission line, the smaller the magnification. The manufacturer writes length information indicating the length of the transmission line into the storage section. Thus, the amplifier amplifies the amplitude of the image signal at an appropriate amplification factor.
The signal output device and the display appropriately determine the amplification factor of amplification by two amplifiers provided in the signal output device and the display based on the length information indicating the length of the transmission line.
The signal output device determines the amplification factor of the display to amplify by the amplifier based on the length information, and transmits an amplification factor signal indicating the determined amplification factor to the display via the communication line. The display sets the amplification factor of the amplification by the amplifier to the amplification factor indicated by the received amplification factor signal.
Drawings
Fig. 1 is a perspective view of a machine tool according to embodiment 1.
Fig. 2 is a schematic side view of the machine tool.
Fig. 3 is a block diagram showing the structure of important parts of the control board and the operation board.
Fig. 4 is a graph showing a magnification table.
Fig. 5 is a flowchart showing a procedure of processing by the control board and the operation board.
Fig. 6 is an explanatory view of the effect of the machine tool.
Fig. 7 is a block diagram showing the main part structure of the control panel and the operation panel in embodiment 2.
Fig. 8 is a diagram showing a magnification table.
Fig. 9 is a flowchart showing a procedure of processing by the control board and the operation board.
Fig. 10 is a block diagram showing the structure of important parts of the control panel and the operation panel in embodiment 3.
Fig. 11 is a flowchart showing a procedure of processing by the control board.
Fig. 12 is a flowchart showing a procedure of processing performed by the control board and the operation board of embodiment 4.
Detailed Description
As shown in fig. 1, the machine tool 1 has a rectangular parallelepiped machine tool body 10. A space not shown is provided inside the machine tool body 10. The operator places a workpiece to be machined in a space inside the machine tool body 10. The machine tool body 10 has a tool in a space. The machine tool body 10 uses a tool therein to machine a workpiece. The mechanical processing is milling, drilling and the like.
A control panel 11 and an operation panel 12 are fixed to the machine tool 1 on the outer side of a machine tool body 10. The control board 11 outputs image signals of various images to the operation board 12. The video signal is a pulse-like electric signal based on the standard such as HDMI (registered trademark) (high definition multimedia interface) and DVI (digital visual interface). The control board 11 outputs an image signal such as an image showing a set value required for machining. The operation panel 12 has a display unit 20. The operation panel 12 displays an image based on the image signal output from the control panel 11 on the display unit 20. The control board 11 and the operation board 12 function as a signal output device and a display device, respectively.
The operation panel 12 includes an operation unit 21 such as a button, a switch, and a touch panel. The operator operates the operation unit 21 while viewing the image displayed on the display unit 20. The operation panel 12 outputs an operation signal indicating the content of an operation performed by the operator using the operation unit 21 to the control panel 11. The control board 11 generates a control signal indicating the content of machining based on the content of the operation indicated by the operation signal output from the operation board 12, and outputs the generated control signal to the machine tool body 10.
The machine tool body 10 performs machining on a workpiece in accordance with the content of the control signal output from the control board 11, and outputs state information indicating the state of the workpiece and the like to the control board 11. When the state information output from the machine tool main body 10 indicates a specific state, the control board 11 outputs an image signal indicating an image of a warning to the operation board 12. The operation panel 12 displays an image indicating a warning, which is an image based on the image signal output from the control panel 11, on the display unit 20. The control board 11 outputs an image signal showing an image of the updated set value to the operation board 12 based on the content of the operation indicated by the operation signal output from the operation board 12. The display unit 20 of the operation panel 12 displays an image showing the updated set value. The operator operates the operation unit 21 while viewing the image newly displayed on the display unit 20.
The control plate 11 and the operation plate 12 face each other with the machine tool body 10 interposed therebetween. As shown in fig. 2, the machine tool 1 has a transmission line Lg for transmitting an image signal. The transmission line Lg is an electric wire or the like, and passes through the machine tool body 10. The transmission line Lg connects the control board 11 with the operation board 12. The machine tool 1 has a communication line Lc. The communication line Lc is a Local Area Network (LAN) line or the like, and passes through the machine tool main body 10. The communication line Lc also connects the control panel 11 with the operation panel 12. The communication line Lc is used to transmit an operation signal. The transmission line Lg and the communication line Lc may not pass through the machine tool body 10. At this time, the transmission line Lg and the communication line Lc are located outside the machine tool body 10. In the process of transmitting the image signal, the amplitude of the image signal is attenuated in the transmission line Lg. The longer the length of the transmission line Lg is, the more greatly the amplitude of the image signal is attenuated. The manufacturer manufactures various machine tools 1 having different widths of the machine tool body 10, that is, different distances between the control plate 11 and the operation plate 12. The longer the distance between the control board 11 and the operation board 12, the longer the distance of the transmission line Lg.
As shown in fig. 3, the control board 11 includes an input/output unit 30, a signal output unit 31, a communication unit 32, a storage unit 33, and an operation control unit 34, which are connected to each other by an internal bus 35. The input/output unit 30 is connected to the machine tool body 10. The signal output section 31 is connected to one end of the transmission line Lg. The communication unit 32 is connected to one end of the communication line Lc. As described above, the other end of the transmission line Lg and the other end of the communication line Lc are connected to the operation panel 12. The input/output unit 30, the signal output unit 31, the communication unit 32, the storage unit 33, and the operation control unit 34 are provided on the substrate, respectively.
The input/output unit 30 outputs a control signal indicating the content of the machining to the machine tool body 10 in accordance with an instruction from the operation control unit 34. As described above, the machine tool body 10 performs machining on the workpiece in accordance with the content indicated by the control signal. The machine tool body 10 outputs state information indicating the state of the workpiece to the input/output unit 30. The signal output unit 31 outputs an image signal to the operation panel 12 via the transmission line Lg in accordance with an instruction from the operation control unit 34. The communication unit 32 transmits a signal to the operation panel 12 via the communication line Lc in accordance with an instruction from the operation control unit 34. The communication unit 32 receives an operation signal from the operation panel 12 via the communication line Lc. The storage unit 33 is a nonvolatile storage member such as a ROM or an EEPROM. The storage unit 33 stores the computer program Pm, the length information B, and the magnification table T. The length information B indicates the length of the transmission line Lg. The length information B is not limited to information directly representing the length of the transmission line Lg. As described above, the longer the width of the machine tool body 10, that is, the distance between the control plate 11 and the operation plate 12, the longer the transmission line Lg. The length information B may be information indicating the width of the machine tool body 10, information indicating the model of the machine tool body 10, or the like. As will be described later, the operation panel 12 amplifies the amplitude of the image signal output from the signal output unit 31 of the control panel 11 via the transmission line Lg.
As shown in fig. 4, the magnification table T shows the relationship between the length of the transmission line Lg and the magnification of the amplitude of the image signal, having a length column and a magnification column. The amplification table T shows the lengths of the various transmission lines Lg in the length column. In the example of fig. 4, the magnification table T shows 5m, 7m, 10m, and the like in the length column. The magnification table T shows the magnification corresponding to each length shown in the length column in the magnification column. In the example of fig. 4, 5m, 7m, and 10m correspond to 2.0 times, 2.5 times, and 3.0 times, respectively. The longer the length of the transmission line Lg, the larger the amplification.
The operation control unit 34 shown in fig. 3 includes a CPU. The CPU of the operation control unit 34 executes processing by execution of the computer program Pm. The operation control unit 34 generates a control signal indicating the content of the machining based on the content of the operation indicated by the operation signal received by the communication unit 32. The operation control unit 34 instructs the input/output unit 30 to output the generated control signal. As described above, the input/output unit 30 outputs a control signal to the machine tool body 10 in accordance with the instruction of the operation control unit 34. The machine tool body 10 performs machining on a workpiece in accordance with the content of the control signal output from the input/output unit 30.
The operation control unit 34 determines the amplification factor of the amplitude of the image signal, and instructs the communication unit 32 to transmit an amplification factor signal indicating the determined amplification factor. The communication unit 32 transmits an amplification factor signal to the operation panel 12 via the communication line Lc in accordance with an instruction from the operation control unit 34.
As for the computer program Pm, the computer program Pm may be supplied to the control board 11 using a non-transitory storage medium Am in which the computer program Pm is stored so as to be readable. The storage medium Am is a portable storage means such as a CD-ROM, a USB memory, an SD card, a micro SD card, and a compact flash (registered trademark). The operation control unit 34 reads the computer program Pm from the storage medium Am using a reading device not shown, and writes the read computer program Pm in the storage unit 33. When the control board 11 includes a communication unit, not shown, for communicating with an external device, the computer program Pm can be supplied to the control board 11 by communication via the communication unit. The operation control unit 34 acquires the computer program Pm through the communication unit, and writes the acquired computer program Pm in the storage unit 33.
The operation panel 12 includes an Equalizer (Equalizer)22, a communication unit 23, a storage unit 24, and an operation-side control unit 25, in addition to the display unit 20 and the operation unit 21. The display unit 20, the operation unit 21, the equalizer 22, the communication unit 23, the storage unit 24, and the operation-side control unit 25 are connected to an internal bus 26. The equalizer 22 is connected to the display section 20 and the other end of the transmission line Lg. The communication unit 23 is connected to the other end of the communication line Lc. The communication unit 23, the storage unit 24, and the operation-side control unit 25 are provided in the FPGA, respectively. The signal output section 31 of the control board 11 outputs the image signal to the equalizer 22 via the transmission line Lg. The equalizer 22 performs signal processing on the video signal output from the signal output unit 31 via the transmission line Lg, and outputs the video signal subjected to the signal processing to the display unit 20. In the signal processing, the equalizer 22 restores the shape of the image signal that has been transmitted and changed on the transmission line Lg, and amplifies the amplitude of the image signal. The operation-side control unit 25 sets the amplification factor of the amplitude in the equalizer 22. The equalizer 22 amplifies the amplitude of the image signal output from the signal output section 31 via the transmission line Lg at the amplification factor set by the operation-side control section 25. The equalizer 22 functions as an amplifier.
The display unit 20 is an LCD (liquid crystal display) or the like, and displays an image based on the image signal output from the equalizer 22. As described above, the operator operates the operation unit 21. The operation unit 21 notifies the operation-side control unit 25 of the contents of the operation performed by the operator.
The communication unit 23 transmits an operation signal indicating the content of the operation performed by the operator using the operation unit 21 to the communication unit 32 of the control panel 11 via the communication line Lc in accordance with the instruction of the operation-side control unit 25. The storage unit 24 is a nonvolatile storage member such as a mask ROM, an EEPROM, and a flash memory. The storage unit 24 stores a computer program Pd. The operation-side control unit 25 includes a CPU. The CPU of the operation-side control section 25 executes processing by execution of the computer program Pd. Each time the operator operates the operation unit 21, the operation-side control unit 25 instructs the communication unit 23 to transmit an operation signal indicating the content of the operation by the operator using the operation unit 21. As described above, the communication unit 23 transmits the operation signal to the communication unit 32 of the control panel 11 via the communication line Lc in accordance with the instruction from the operation-side control unit 25. When the communication unit 23 receives the amplification factor signal from the communication unit 32 of the control board 11, the operation-side control unit 25 sets the amplification factor of the equalizer 22 to the amplification factor indicated by the amplification factor signal received by the communication unit 23.
The computer program Pd may be supplied to the operation panel 12 using a non-transitory storage medium Ad in which the computer program Pd is stored in a readable manner. The storage medium Ad is a portable storage means such as a CD-ROM, a USB memory, an SD card, a micro SD card, a compact flash (registered trademark), or the like. The operation-side control unit 25 reads the computer program Pd from the storage medium Ad using a reading device not shown, and writes the read computer program Pd in the storage unit 24. When the operation panel 12 includes a communication unit, not shown, for communicating with an external device, the computer program Pd can be supplied to the operation panel 12 by communication via the communication unit. The operation-side control unit 25 acquires the computer program Pd through the communication unit, and writes the acquired computer program Pd in the storage unit 24.
Fig. 5 shows the processing performed by the operation control unit 34 of the control board 11 and the processing performed by the operation-side control unit 25 of the operation board 12. The operation control unit 34 and the operation-side control unit 25 repeatedly execute the above-described processing. The operation control unit 34 determines whether or not to output an image signal (step S1). The operation control unit 34 determines that an image signal is to be output when it is necessary to display an image such as a warning on the display unit 20 of the operation panel 12 based on the state information output to the input/output unit 30 by the machine tool body 10. Alternatively, when it is necessary to display an image showing a set value updated based on the content of the operation indicated by the operation signal received by the communication unit 32, it is determined that the image signal is output. When determining that the image signal is not to be output (S1: no), the operation control unit 34 proceeds with the process to step S1.
When determining that the image signal is to be output (yes in S1), the operation control unit 34 acquires the length information B from the storage unit 33 (step S2), and determines the amplification factor of the amplification by the equalizer 22 based on the length of the transmission line Lg indicated by the acquired length information B (step S3). The operation control unit 34 determines the enlargement factor corresponding to the length indicated by the length information B in the enlargement factor table T. In the example of fig. 4, when the length information B indicates 10m as the length of the transmission line Lg, the operation control unit 34 determines the amplification factor of amplification by the equalizer 22 to be 3.0 times. The operation control unit 34 functions as a determination unit. The structure for determining the magnification is not limited to the structure using the magnification table T. The operation control unit 34 may determine the amplification factor using a numerical expression in which the length of the transmission line Lg is variable. The operation control unit 34 calculates the magnification by substituting the length indicated by the length information B into the numerical expression. The operation control unit 34 determines the amplification factor at which the equalizer 22 amplifies the signal as the calculated amplification factor.
Next, the operation control unit 34 instructs the communication unit 32 to transmit an amplification factor signal indicating the amplification factor determined in step S3 (step S4). The communication unit 32 transmits an amplification factor signal indicating the amplification factor determined by the operation control unit 34 in step S3 to the communication unit 23 of the operation panel 12 via the communication line Lc. The communication unit 32 functions as a transmission unit. The communication unit 23 of the operation panel 12 receives the amplification factor signal transmitted from the communication unit 32 via the communication line Lc. The communication unit 23 functions as a receiving unit. The operation-side control unit 25 determines whether the communication unit 23 has received the amplification factor signal from the communication unit 32 of the control board 11 (step S11). When the operation-side control unit 25 determines that the communication unit 23 has not received the amplification factor signal (S11: no), it again executes step S11. When the operation-side control unit 25 determines that the communication unit 23 has received the amplification factor signal (yes in S11), the equalizer 22 sets the amplification factor determined in step S3 by the operation control unit 34 of the control panel 11, which is the amplification factor indicated by the amplification factor signal received by the communication unit 23 (step S12). After executing step S12, the operation-side control unit 25 ends the process. The operation-side control unit 25 functions as a setting unit.
After executing step S4, the operation control unit 34 of the control board 11 instructs the signal output unit 31 to output an image signal (step S5). As described above, the signal output unit 31 outputs the video signal to the equalizer 22 of the operation panel 12 via the transmission line Lg in accordance with the instruction of the operation control unit 34. The equalizer 22 performs signal processing on the image signal output from the signal output section 31 to the equalizer 22 via the transmission line Lg. The equalizer 22 amplifies the amplitude of the image signal at the amplification factor set by the operation-side control unit 25 in step S12. The equalizer 22 outputs the image signal subjected to the signal processing to the display unit 20. The display unit 20 displays an image of the image signal output from the equalizer 22. After executing step S5, the operation control unit 34 ends the process.
The upper part of fig. 6 shows the waveform of the image signal before transmission in the transmission line Lg, the middle part shows the waveform of the image signal after transmission in the transmission line Lg, and the lower part shows the waveform of the image signal output by the equalizer 22. The scales on the vertical and horizontal axes are the same for these three waveforms. As shown in fig. 6, when the image signal is transmitted in the transmission line Lg, the amplitude of the image signal is attenuated. The equalizer 22 amplifies the amplitude of the image signal with the attenuated amplitude at the amplification factor determined by the operation control unit 34. Therefore, the equalizer 22 outputs an image signal having an appropriate amplitude to the display unit 20. The display unit 20 accurately displays an image based on the image signal. When the image signal is transmitted in the transmission line Lg, the shape of the image signal changes from a pulse shape. For the sake of simple explanation, fig. 6 does not show the change in the shape of the image signal. As described above, the equalizer 22 also restores the shape of the image signal.
As described above, the operation control unit 34 of the control board 11 appropriately determines the amplification factor to be amplified by the equalizer 22 based on the length information B. The manufacturer of the machine tool 1 fixes the control board 11 and the operation board 12 to the outside of the machine tool body 10, and then writes the length information B in the storage unit 33. Therefore, the equalizer 22 amplifies the amplitude of the image signal at an appropriate amplification rate.
Alternatively, the operation-side control unit 25 of the operation panel 12 may determine the amplification factor of the equalizer 22, instead of determining the amplification factor of the equalizer 22 by the operation control unit 34 of the control panel 11. At this time, the operation-side control unit 25 functions as a determination unit. The communication unit 32 of the control board 11 transmits the length information B to the communication unit 23 of the operation board 12. The operation-side control unit 25 acquires the length information B received by the communication unit 23, determines the amplification factor based on the acquired length information B, and sets the amplification factor amplified by the equalizer 22 to the determined amplification factor. The storage unit 24 may store the magnification table T.
Embodiment mode 2
In embodiment 1, the number of amplifiers for amplifying the amplitude of the image signal is 1. The number of amplifiers need not be limited to 1. A description will be given of embodiment 2 with respect to a point different from embodiment 1. The configuration other than the configuration described later is common to embodiment 1. Therefore, the same reference numerals as those in embodiment 1 are given to the components common to embodiment 1, and the description thereof is omitted.
As shown in fig. 7, the machine tool 1 according to embodiment 2 includes a control board 11a instead of the control board 11. The control board 11a includes an amplifier 40 in addition to the components included in the control board 11 of embodiment 1. The input/output unit 30, the communication unit 32, the storage unit 33, and the operation control unit 34 are connected in the same manner as in embodiment 1. The control board 11a functions as a signal output device in the same manner as the control board 11. The amplifier 40 may be provided on the substrate. The signal output section 31 and the amplifier 40 are connected to the internal bus 35, respectively. The signal output section 31 is directly connected to the amplifier 40. The amplifier 40 is connected to one end of the transmission line Lg. The signal output unit 31 outputs the image signal to the amplifier 40 according to the instruction of the operation control unit 34. The amplifier 40 amplifies the amplitude of the image signal output from the signal output unit 31, and outputs the image signal whose amplitude has been amplified to the equalizer 22 of the operation panel 12 via the transmission line Lg. The equalizer 22 performs the same signal processing as in embodiment 1 on the video signal output from the amplifier 40, and outputs the video signal subjected to the signal processing to the display unit 20. The display unit 20 displays an image of the image signal output from the equalizer 22. The operation control unit 34 sets the amplification factor of the amplitude in the amplifier 40. The amplifier 40 amplifies the amplitude of the image signal at the amplification factor set by the operation control unit 34. As in embodiment 1, the equalizer 22 amplifies the amplitude of the image signal at the amplification factor set by the operation-side control unit 25. In embodiment 2, the amplifier 40 and the equalizer 22 function as amplifiers for amplifying the amplitude of the image signal. The number of amplifiers is 2. The storage unit 33 of the control board 11a stores the magnification table Ta instead of the magnification table T. As shown in fig. 8, the amplification factor table Ta has a length column, an amplification factor column of the amplifier 40, and an amplification factor column of the equalizer 22. Fig. 8 corresponds to fig. 4. The amplification factor table Ta shows the lengths of the various transmission lines Lg in the length column in the same manner as in embodiment 1. The amplification factor table Ta shows the amplification factor of the amplifier 40 and the amplification factor of the equalizer 22 corresponding to each length shown in the length column in the amplification factor column of the amplifier 40 and the amplification factor column of the equalizer 22. In the example of fig. 8, when the length is 5m, the amplification factor of the amplifier 40 is 1.2 times, and the amplification factor of the equalizer 22 is 1.8 times. The longer the length of the transmission line Lg is, the larger the product of the amplification factor of the amplifier 40 and the amplification factor of the equalizer 22 is.
Fig. 9 shows the processing performed by the operation control unit 34 of the control board 11a and the processing performed by the operation-side control unit 25 of the operation board 12. Fig. 9 corresponds to fig. 5. The operation control unit 34 and the operation-side control unit 25 repeatedly execute the processing. A part of the steps of the processing of embodiment 2 are the same as those of embodiment 1. Therefore, steps common to those of embodiment 1 are assigned the same reference numerals as in embodiment 1, and descriptions thereof are omitted. Steps S1, S2, and S5 of the process of embodiment 2 are the same as those of embodiment 1. In step S2 of embodiment 2, the operation control unit 34 acquires the length information B from the storage unit 33, as in embodiment 1. The operation controller 34 determines the amplification factor of the amplifier 40 and the amplification factor of the equalizer 22 based on the length of the transmission line Lg indicated by the length information B acquired in step S2 (step S21). In step S21, the operation control unit 34 determines the amplification factor of the amplifier 40 and the amplification factor of the equalizer 22 as the amplification factors corresponding to the lengths indicated by the length information B in the amplification factor table Ta. In the example of fig. 8, when the length information B indicates 10m as the length of the transmission line Lg, the operation control unit 34 determines the amplification factor of the amplifier 40 to be 1.6 times and the amplification factor of the equalizer 22 to be 2.2 times.
The configuration for determining the amplification factor of amplifier 40 and the amplification factor of equalizer 22 is not limited to the configuration using amplification factor table Ta. The operation control unit 34 may determine the amplification factor of the amplification by the amplifier 40 and the equalizer 22 using a numerical expression in which the length of the transmission line Lg is variable, as in embodiment 1. The configuration for determining the amplification factor of amplifier 40 and the configuration for determining the amplification factor of equalizer 22 may be different from each other. The operation control unit 34 may determine the amplification factor of the amplifier 40 using the amplification factor table Ta and determine the amplification factor of the equalizer 22 using a numerical expression.
Next, the operation controller 34 sets the amplification factor of the amplifier 40 to the amplification factor determined in step S21 (step S22). The amplifier 40 amplifies the amplitude of the image signal at the amplification factor determined in step S21. After executing step S22, the operation controller 34 instructs the communication unit 32 to transmit an amplification factor signal indicating the amplification factor of the equalizer 22 determined in step S21 (step S23). The communication unit 32 transmits an amplification factor signal indicating the amplification factor of the equalizer 22 determined by the operation-side control unit 25 in step S21 to the communication unit 23 of the operation panel 12 via the communication line Lc. The operation-side control unit 25 determines whether the communication unit 23 has received the amplification factor signal from the communication unit 32 of the control board 11a (step S31). When the operation-side control unit 25 determines that the communication unit 23 has not received the amplification factor signal (S31: no), it again executes step S31.
When the operation-side control unit 25 determines that the communication unit 23 has received the amplification factor signal (S31: yes), the amplification factor of the equalizer 22 is set to the amplification factor of the equalizer 22 indicated by the amplification factor signal received by the communication unit 23, that is, the amplification factor of the equalizer 22 determined in step S21 by the operation control unit 34 of the control board 11a (step S32). After executing step S32, the operation-side control unit 25 ends the process.
After the operation control unit 34 of the control board 11a executes step S23, it executes step S5. In step S5, the operation control unit 34 instructs the signal output unit 31 to output the image signal. As described above, the amplifier 40 outputs the image signal to the equalizer 22 of the operation panel 12 via the transmission line Lg. The equalizer 22 performs signal processing on the image signal output from the amplifier 40 to the equalizer 22 via the transmission line Lg. The equalizer 22 amplifies the amplitude of the image signal at the amplification factor set in step S32. The equalizer 22 outputs the image signal subjected to the signal processing to the display unit 20. The display unit 20 displays an image of the image signal output from the equalizer 22. After executing step S5, the operation control unit 34 ends the process.
In the machine tool 1 according to embodiment 2, the operation control unit 34 of the control board 11a determines the amplification factor of amplification by the amplifier 40 and the equalizer 22 based on the length information B indicating the length of the transmission line Lg. The manufacturer of the machine tool 1 fixes the control plate 11a and the operation plate 12 to the outside of the machine tool body 10, and then writes the length information B in the storage unit 33. Therefore, the amplifier 40 and the equalizer 22 amplify the amplitude of the image signal at an appropriate amplification rate.
As another embodiment, similarly to the other embodiment of embodiment 1, the amplification factor of the equalizer 22 may be determined not by the operation control unit 34 of the control board 11a but by the operation-side control unit 25 of the operation board 12. Similarly, the operation control unit 34 of the control board 11a may determine the amplification factor of the amplifier 40, but the operation-side control unit 25 of the operation board 12 may determine the amplification factor of the amplifier 40. The communication unit 32 of the control board 11a transmits the length information B to the communication unit 23 of the operation board 12. The operation-side control unit 25 may acquire the length information B received by the communication unit 23 and determine the amplification factor of the amplifier 40 based on the acquired length information B. At this time, the communication unit 23 of the operation panel 12 transmits a signal indicating the amplification factor of the amplifier 40 determined by the operation-side control unit 25 to the communication unit 32 of the control panel 11 a. The operation control unit 34 sets the amplification factor of the amplifier 40 to the amplification factor of the amplifier 40 indicated by the signal received by the communication unit 32. When the operation-side control unit 25 determines the amplification factor of the amplifier 40 and the amplification factor of the equalizer 22, the operation-side control unit 25 functions as a determination unit. When one of the amplification factor of the amplifier 40 and the amplification factor of the equalizer 22 is determined by the operation control unit 34 and the other amplification factor is determined by the operation-side control unit 25, the operation control unit 34 and the operation-side control unit 25 function as a determination unit as a whole. In embodiment 2, the magnification table Ta may be stored in the storage unit 24. The number of amplifiers for amplifying the amplitude of the image signal is not limited to 2, and may be 3 or more. An amplifier having a fixed amplification factor of the amplitude of the image signal may be provided between the signal output unit 31 and the display unit 20.
Embodiment 3
In embodiment 2, a plurality of amplifiers including the amplifier 40 and the equalizer 22 amplify the amplitude of the image signal. However, the amplifier that amplifies the amplitude of the image signal may be only the amplifier 40.
Next, a description will be given of embodiment 3 with respect to aspects different from embodiment 2. The configuration other than the configuration described later is common to embodiment 2. The same reference numerals as in embodiment 2 are given to the components common to embodiment 2, and the description thereof is omitted.
As shown in fig. 10, the machine tool 1 according to embodiment 3 includes an operation panel 12b instead of the operation panel 12. The operation panel 12b has other components than the equalizer 22 among the components of the operation panel 12 of embodiment 2. The operation unit 21, the communication unit 23, the storage unit 24, and the operation-side control unit 25 are connected in the same manner as in embodiment 2. The display unit 20 of embodiment 3 is connected to the other end of the transmission line Lg. The operation panel 12b functions as a display similarly to the operation panel 12.
The amplifier 40 of the control board 11a outputs an image signal to the display section 20 via the transmission line Lg. The display unit 20 displays an image based on the image signal output from the amplifier 40. The storage unit 33 of the control board 11a stores the amplification degree table Tb in place of the amplification degree table Ta. The amplification factor table Tb shows the amplification factors of the amplifiers 40 corresponding to the respective lengths shown in the length column in the amplification factor column of the amplifiers 40. The amplification factor table Tb is, for example, a table excluding the amplification factor column of the equalizer 22 in fig. 8. The longer the length of the transmission line Lg, the greater the amplification of the amplifier 40.
Fig. 11 shows a process performed by the operation control unit 34 of the control board 11 a. Fig. 11 corresponds to fig. 9. The operation panel 12 does not have the equalizer 22. Therefore, the operation-side control unit 25 of the operation panel 12b does not set the magnification. A part of the steps of the processing of embodiment 3 are the same as those of embodiment 2. Therefore, steps common to those of embodiment 2 are denoted by the same reference numerals as those of embodiment 2, and descriptions thereof are omitted. Steps S1, S2, S22, and S5 in embodiment 3 are the same as those in embodiment 2.
In step S2 of embodiment 3, the operation control unit 34 acquires the length information B from the storage unit 33, as in embodiment 2. Next, the operation controller 34 determines the amplification factor of the amplifier 40 based on the length of the transmission line Lg indicated by the length information B acquired in step S2 (step S41). In step S41, the operation control unit 34 determines the amplification factor of the amplifier 40 as the amplification factor corresponding to the length indicated by the length information B in the amplification factor table Tb. In the example of fig. 8, when the length information B indicates 10m as the length of the transmission line Lg, the operation control unit 34 determines the amplification factor of the amplifier 40 to be 1.6 times. The configuration for determining the amplification factor of the amplifier 40 is not limited to the configuration using the amplification factor table Tb as in embodiment 2. The operation control unit 34 may determine the amplification factor of the amplification by the amplifier 40 using a numerical expression in which the length of the transmission line Lg is variable, as in embodiment 2.
The operation controller 34 executes steps S22 and S5 in this order after executing step S41. In step S22, the operation control unit 34 sets the amplification factor of the amplifier 40 to the amplification factor determined in step S41. In step S5, the operation control unit 34 instructs the signal output unit 31 to output the image signal. The amplifier 40 amplifies the amplitude of the image signal output from the signal output unit 31 at the amplification factor determined by the operation control unit 34 in step S41. The amplifier 40 outputs the image signal whose amplitude has been amplified to the display unit 20 via the transmission line Lg. The display unit 20 displays an image of the image signal output from the amplifier 40. After executing step S5, the operation control unit 34 ends the process.
In the machine tool 1 according to embodiment 3, the operation control unit 34 of the control board 11a determines the amplification factor to be amplified by the amplifier 40 based on the length information B indicating the length of the transmission line Lg. The manufacturer of the machine tool 1 fixes the control plate 11a and the operation plate 12B to the outside of the machine tool body 10, and then writes the length information B in the storage unit 33. Thus, the amplifier 40 amplifies the amplitude of the image signal at an appropriate amplification factor.
Alternatively, the operation control unit 34 of the control board 11a may determine the amplification factor of the amplifier 40, and the operation-side control unit 25 of the operation board 12b may determine the amplification factor of the amplifier 40. In embodiment 3, the amplification factor table Tb may be stored in the storage unit 24.
Embodiment 4
In embodiment 1, the operation-side control unit 25 of the operation panel 12 sets the amplification factor at which the equalizer 22 amplifies the image signal every time the operation control unit 34 of the control panel 11 determines that the image signal is output. The operation-side control unit 25 may not set the amplification factor every time the operation control unit 34 determines that the image signal is output. Next, a description will be given of embodiment 4 with respect to aspects different from embodiment 1. The configuration other than the configuration described later is common to embodiment 1. Therefore, the same reference numerals as those in embodiment 1 are given to the components common to embodiment 1, and the description thereof is omitted. When embodiment 4 is compared with embodiment 1, the process of the processing performed by the operation control unit 34 is different.
Fig. 12 shows the processing performed by the operation control unit 34 of the control panel 11 and the processing performed by the operation-side control unit 25 of the operation panel 12. Fig. 12 corresponds to fig. 5. A part of the steps of the processing of embodiment 4 are the same as those of embodiment 1. Therefore, steps common to those of embodiment 1 are assigned the same reference numerals as in embodiment 1, and descriptions thereof are omitted. The process of embodiment 4 includes step S51.
When determining that the image signal is to be output (yes in S1), the operation control unit 34 determines whether or not the output of the image signal is the first output after the power supply to the machine tool 1 is turned on (step S51). When the operation control unit 34 determines that the output of the image signal is the first output (yes in S51), it sequentially executes steps S2 to S4. The operation control unit 34 determines the amplification factor of the amplification by the equalizer 22 based on the length information B. The operation-side control unit 25 sets the amplification factor of the equalizer 22 to the amplification factor determined by the operation control unit 34. When the operation control unit 34 determines that the output of the image signal is not the first output (S51: no), or after executing step S4, it executes step S5. The signal output section 31 of the control board 11 outputs an image signal.
As described above, in embodiment 4, when the signal output unit 31 of the control board 11 outputs the image signal for the first time after the power supply to the machine tool 1 is turned on, the operation control unit 34 determines the amplification factor of the equalizer 22. The operation-side control unit 25 sets the amplification factor of the equalizer 22 to the amplification factor determined by the operation control unit 34. The operation control unit 34 does not determine the amplification factor of the equalizer 22 for the second and subsequent outputs of the video signal, and repeatedly instructs the signal output unit 31 to output the video signal. During the power-on period of the machine tool 1, the equalizer 22 maintains the amplification factor.
The machine tool 1 according to embodiment 4 has the same effects as those of the machine tool 1 according to embodiment 1. As another embodiment, the amplification factor of the equalizer 22 may be determined by the operation-side control unit 25 of the operation panel 12, as in the other embodiment of embodiment 1.
In embodiments 2 and 3 and other embodiments thereof, the operation control unit 34 or the operation-side control unit 25 determines the amplification factor of one or both of the amplifier 40 and the equalizer 22 each time the operation control unit 34 determines that an image signal is output. However, the timing of determining the amplification factor of each of the amplifier 40 and the equalizer 22 may be, as in embodiment 4, only the timing at which the signal output unit 31 outputs the image signal for the first time after the power of the machine tool 1 is turned on.
In embodiments 1 to 4, the storage unit 24 may store the length information B instead of the length information B stored in the storage unit 33. At this time, the manufacturer writes the length information B into the storage unit 24. The communication between the communication unit 23 and the communication unit 32 may be wireless communication without using the communication line Lc.

Claims (5)

1. A machine tool (1) in which signal output devices (11, 11a) for outputting image signals and display devices (12, 12a) for displaying images based on the image signals output by the signal output devices are fixed to the outside of a machine tool body (10) in which machining is performed, the machine tool (1) comprising:
a transmission line (Lg) connecting the signal outputter with the display and for transmitting the image signal;
an amplifier (22, 40) that amplifies the amplitude of the image signal;
a storage unit (24, 33) that stores length information indicating the length of the transmission line; and
and determination units (25, 34) for determining the amplification factor of amplification by the amplifier based on the length information stored in the storage unit.
2. The machine tool of claim 1,
the number of the amplifiers is more than 2,
the signal outputter and the display each have the amplifier,
the determination unit determines an amplification factor at which the amplifier provided in each of the signal output unit and the display unit amplifies the signal.
3. Machine tool according to claim 1 or 2,
the signal output device has:
the storage section;
the determination part; and
a transmission unit (32) for transmitting an amplification factor signal indicating the amplification factor determined by the determination unit,
the display has:
the amplifier;
a receiving unit (23) that receives the amplification factor signal transmitted by the transmitting unit; and
and a setting unit (25) that sets the amplification factor of the amplification by the amplifier of the display to the amplification factor indicated by the amplification factor signal received by the receiving unit.
4. A decision method, executed by a computer to:
acquiring length information indicating a length of a transmission line (Lg) of a machine tool (1) in which a signal outputter (11, 11a) for outputting an image signal and a display (12, 12b) for displaying an image based on the image signal output by the signal outputter are fixed to an outer side of a machine tool body (10) in which machining is performed, and the transmission line for transmitting the image signal connects the signal outputter with the display; and
based on the acquired length information, an amplification factor relating to amplification of the amplitude of the image signal by an amplifier (22) is determined.
5. A storage medium (Am) is a non-transitory storage medium in which a computer program (Pm) is stored in a readable manner,
the computer program causes a computer to execute:
acquiring length information indicating a length of a transmission line of a machine tool (1) in which a signal outputter (11, 11a) for outputting an image signal and a display (12, 12b) for displaying an image based on the image signal output by the signal outputter are fixed to an outer side of a machine tool body (10) in which machining is performed, and the transmission line for transmitting the image signal connects the signal outputter with the display; and
based on the acquired length information, an amplification factor relating to amplification of the amplitude of the image signal by an amplifier (22) is determined.
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