CN100445909C - Machine Tool Control Device and Processing Method Using Programs for PLC Interface Processing - Google Patents

Abstract

The invention relates to a machine tool control device and an interface processing method that can process PLC interfaces with programs, especially for the I/O means on the PLC of the main operating panel of the machine tool, without using interfaces or indicator lights, but by using program methods Processing can save wiring, thereby facilitating user operation, easy design, and improved system stability. In the present invention, the machine tool control device and interface processing method that can be used to process the PLC interface through the program do not use the usual PLC input interface to transmit the non-sequential control commands processed in the PLC, but directly through the main operation panel and the numerical control unit. It is input into the memory for PLC, and the control result does not use the usual PLC output interface, but is transmitted to the numerical control unit through a preset specific method.

Description

Machine Tool Control Device and Processing Method Using Programs for PLC Interface Processing

technical field

The invention relates to a machine tool control device and an interface processing method that can be used for PLC interface processing with a program, especially for the I/O on the Programmable Logic Controller (Programmable Logic Controller: hereinafter referred to as PLC) of the main operation panel (Operation Panel) of the machine tool. The method does not use an interface or an indicator light, but uses a program to process, thereby forming a machine tool control device and a processing method that can perform PLC interface processing with a program that does not require wiring.

Background technique

Currently used CNC (Computer Numerical Control: Computer Numerical Control) machine tools refer to equipment that performs machining operations such as cutting on workpieces through automatic operations controlled by NC programs.

FIG. 1 is a block diagram of a conventional CNC machine tool control device.

The control device 100 in FIG. 1 controls the entire movement of the machine tool (not shown) connected to it, and controls the movement of the machine tool according to the preset command in the numerical control program. In addition, accept related commands from the user and pass related information.

The conventional control device 100 includes a main operation panel 10 composed of an input and output panel 11 , a keyboard 12 , and a display unit 13 for inputting user commands related to machine tool operations. Moreover, it also includes: the numerical control unit 20, which recognizes the command of the main operation panel 10, and outputs a series of sequential control commands through the program in the program storage unit (not shown); PLC30, which accepts the sequential control commands from the numerical control unit 20, And carry out sequential control (Sequential Control) to the input and output of machine tool by corresponding method; Mechanical input and output unit 40, input and output the order or information of PLC30, and order is transmitted to machine tool; Servo control unit 50, according to above-mentioned numerical control unit 20 The sequence control commands are used to control the motor 60 such as a servo motor or a spindle motor.

Here, sequential control refers to the automatic control of sequentially performing a series of control steps according to a predetermined sequence. For example, assuming that an NC lathe (NC Turning Machine) processes a component with an outer diameter of 50mm and an M20 thread formed on the inner diameter, first, the NC lathe fixes the circular material on the chuck and starts processing. A tool for rough cutting is selected from various tools mounted on the tool post for rough cutting. After the rough machining is completed, the chuck stops rotating, and the tool holder selects the turning tool for fine machining. After the tool selection is completed, the spindle drives the chuck to rotate, and the finishing turning tool located on the machining position of the tool holder is used for finishing machining to complete the machining of an outer diameter of 50mm. After finishing the outer diameter machining, select the drill bit in the tool holder to drill the center of the inner diameter of the workpiece. After the drilling process is completed, select a turning tool suitable for inner diameter processing and make it enter the processing position, and then process the inner diameter to form M20 threads. After the inner diameter processing is completed, the tool holder selects the M20 screw tap for thread processing, and performs tapping processing to form threads. The above actions are carried out automatically in order, which is sequence control. That is, the control device 100 controls the machine tool sequentially according to a series of control commands, and processes any complicated parts according to the operation program.

Part A of FIG. 1 shows the connection relationship between the I/O board 11 and the PLC 30. The I/O board 11 includes various input switches for machine tool operation and indicator lights for displaying the output of the machine tool or PLC 30.

The input-output board 11 is provided with input devices such as a toggle switch (Toggle), which is connected to the input interface and output interface of the PLC30, and accepts the PLC30 control command performed by the user through switch operation. In addition, an indicator light is provided on the input and output board 11, which can display the output through the output interface of the PLC30, so as to display the operation of the machine tool.

Fig. 2 is a schematic diagram of the main operation panel of the existing machine tool control device.

As shown in FIG. 2 , the main operation panel includes a display screen 2 a, English/numeric input keys 2 b, function keys 2 c and an operation panel 2 d. Wherein, the display screen 2 a corresponds to the display unit 13 , and the English/numeric input key 2 b and the function key 2 c correspond to the keyboard 12 . The operation panel 2d corresponds to the input/output panel 11, and inputs to various control interfaces of the PLC 30 are performed by operating switches on the operation panel 2d.

Such switches include switches used for machine tool operation, power on/off, emergency stop (emergency stop), and override switch (Override), manual operation switches that make the spindle rotate clockwise and counterclockwise, on/off Turn off the switch for cutting oil and manually transfer the operation switch. The output interface output by the PLC 30 is displayed through display elements such as indicator lights on the operation panel 2d.

The action of the machine tool through the above switches is not a series of mechanical processing such as thread formation in the machine tool through sequential control, but a non-sequential control command issued by the user in a series of sequential control according to needs.

For example, in mechanical processing, according to the predetermined sequence, it is not the time to spray cutting oil, but when the user judges that cutting oil needs to be sprayed according to the processing status, the cutting oil is sprayed through the switch operation. In addition, when it is judged that the counterclockwise rotation of the spindle is more conducive to processing according to the processing status, the user can pause processing and adjust the rotation direction, which has nothing to do with the processing sequence. These operations have nothing to do with the preset processing sequence, and are operated by the user in real time. That is, in sequential control, the user inputs the processing sequence through the keyboard or touch screen, so that the numerical control unit 20 controls the servo motor or the spindle motor and other motors through the servo control unit 50 in the servo control. In addition, the numerical control unit 20 issues commands to the PLC 30 to control various devices of the machine tool, so that the mechanical input and output unit 40 transmits commands to the machine tool through the PLC 30 . That is, in the sequence control, the numerical control unit 20 gives commands to the servo control unit 50 or the PLC 30 . However, in the control commands of the existing machine tool control device, the non-sequential commands are directly input by the user through the PLC dedicated I/O input and output interface. That is, the user operates various switches on the operation panel, and transmits non-sequential control commands to PLC 30 through wiring directly connecting the operation panel and PLC 30 .

Usually, the I/O board 11 on the main operation board 10 includes 16 to 32 interfaces for input and output of the PLC 30 . Between the input-output board 11 and the PLC 30, there are wires corresponding to the number of interfaces, and the length of such wires can reach several meters. Such wiring can sometimes act as a transmission path or antenna for clutter occurring in the machine tool and its controls, thereby degrading machine tool performance, and the wiring process constrains the machine tool design.

In addition, with the recent increase in the price of I/O interfaces, the installation of various switching elements for machine tool control has become more and more expensive. Moreover, installing such switch elements on the main operating panel makes the main operating panel larger and larger, and the appearance design of the main operating panel is also limited by these switches and indicator lights.

Contents of the invention

The present invention aims to solve the above problems, and its purpose is to provide a method for processing the I/O for PLC on the main operation panel of the machine tool control device without using the interface, thereby saving the I/O used for the PLC interface. Wiring, and a machine tool control device and processing method for PLC interface processing with programs available to improve system reliability.

In addition, another object of the present invention is to provide a main operation panel structure provided with a user interface, the user interface is used for the PLC interface of program processing, so that the machine tool control device that can be used for PLC interface processing by the user to operate is convenient and processing methods.

The machine tool control device for controlling the machine tool according to relevant control commands in the present invention includes: PLC, main operation panel, and numerical control unit.

The PLC controls the above-mentioned machine tool according to the relevant interface corresponding commands accepted during the execution of the above-mentioned related control commands including sequential control commands and corresponding to the user's non-sequential control commands. The main operation panel accepts at least one non-sequential control command from the user when the machine tool is operating, and outputs corresponding specific interface input information.

In addition, the numerical control unit converts the above-mentioned interface input information into the above-mentioned interface corresponding commands, and transmits them to the above-mentioned PLC.

The above-mentioned non-sequential control commands include at least one of emergency shutdown of the above-mentioned machine tool, control of a running indicator light showing that the above-mentioned machine tool is in a running state, switch control of an automatic door, and override control.

The above-mentioned PLC receives and outputs at least one control result of the above-mentioned non-sequential control command from the above-mentioned machine tool, and the above-mentioned main operation panel receives and outputs information corresponding to the above-mentioned interface and can display it to the user. At this time, the above-mentioned numerical control unit converts the above-mentioned control result into the above-mentioned interface output information and outputs it to the above-mentioned main operation panel.

In addition, the above-mentioned numerical control unit and the above-mentioned PLC preferably include a memory capable of inputting and outputting relevant data. In this way, when the above-mentioned numerical control unit transmits the command corresponding to the above-mentioned interface to the above-mentioned PLC, and when the above-mentioned PLC transmits the above-mentioned control result to the above-mentioned numerical control unit, in the above-mentioned memory, the corresponding command and control result of the above-mentioned interface are passed. Flag) mark.

The above-mentioned PLC operates according to a ladder diagram (LadderDiagram) that can be implemented by a program from the above-mentioned numerical control unit, and the above-mentioned ladder diagram includes the corresponding commands of the above-mentioned interface and information related to the processing of control results.

The above-mentioned main operation panel includes an input unit, a display unit, and an operation panel control unit.

The input unit accepts the above-mentioned non-sequential commands from the user through a specific input method; the display unit displays the above-mentioned interface output information to the user. The operation panel control unit converts user non-sequential control commands input through the input unit into the interface input information and outputs to the numerical control unit, and outputs information corresponding to the received interface output information to the display unit.

The above-mentioned display unit may display to the user by at least one method of vision or hearing.

The above-mentioned input unit may include at least one of a keyboard and a visually identifiable touch screen provided on the above-mentioned input unit.

The above-mentioned operation panel control unit displays a guide (Guide) to help the user to set through the above-mentioned display unit. The above-mentioned input unit accepts settings made by the user according to the above-mentioned guidance.

In addition, in the present invention, the machine tool is equipped with the above-mentioned machine tool control device, so that the wiring for the above-mentioned PLC input/output interface for transmitting the above-mentioned non-sequential control commands can be omitted.

As another embodiment of the present invention, the PLC interface processing method in the machine tool control device is used for PLC to control the machine tool according to the relevant sequence control commands transmitted by the numerical control unit, and to provide a user interface through the main operation panel, which is characterized in that it includes : In the process of executing the above-mentioned specific control commands containing sequential control commands, the step of accepting specific non-sequential control commands from the user through the above-mentioned main operation panel; the above-mentioned main operation panel outputs the relevant interface input information corresponding to the above-mentioned non-sequential control commands Steps: the step of the above numerical control unit outputting the relevant interface corresponding command corresponding to the received input information of the above interface; the step of the above PLC receiving the corresponding command of the above interface and controlling the above machine tool.

Machine tool control device among the present invention has following advantage:

First, the user's non-sequential control commands can be executed without using the I/O interface of the PLC.

Second, the existing PLC can continue to be used, and display components such as a switch for the PLC interface on the main operation panel, an indicator light, and the like can be omitted, and wiring for connecting the main operation panel and the PLC can also be omitted. In this way, many restrictions on design due to wiring processing can be eliminated, and by eliminating wiring, noise transmission paths can be eliminated, thereby improving system reliability.

Third, when processing the PLC with a program, it can be set through user operations. In this way, the main operation panel can be easily constructed to reflect the user's operating habits and forms. Moreover, it is different from the monotonous display of the existing PLC output, and its content can be defined when it is displayed, so that it is very convenient for users to use.

In addition, the change of the main operation panel and the addition of various PLC control interfaces can be easily realized through software upgrades, and it can be achieved while retaining the buttons and/or indicator lights on the main operation panel for users to actually operate. Under the premise, the existing PLC interface is not used.

Description of drawings

Fig. 1 is the block diagram of existing CNC machine tool control device;

Fig. 2 is a schematic diagram of the main operation panel of the existing machine tool control device;

Fig. 3 is the block diagram of machine tool control device of the present invention;

Fig. 4 is a schematic diagram of the main operation panel of the machine tool control device in one embodiment of the present invention;

Fig. 5 is a schematic diagram of the display screen in the main operation panel of Fig. 4;

Fig. 6 is the action flowchart of the machine tool control device of the present invention;

Fig. 7 is another flow chart of the operation of the machine tool control device of the present invention.

Explanation of reference symbols:

310: Main operation panel 311: Operation panel control unit

313: display unit 315: input key

320: CNC unit 330: PLC

340: Mechanical action input and output unit

350: Servo control unit 360: Servo motor

Detailed ways

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The machine tool control device in the present invention includes a PLC, which accepts non-sequential control commands from users and controls the machine tool during the execution of related control commands including sequential control commands. This non-sequential control command refers to the various commands required for the user to control the machine tool arbitrarily during the process of machine tool operation according to a series of sequential control commands in order to achieve its purpose, including, machine tool Control of running indicator light during operation; manual transfer control; manual control of spindle rotation in clockwise or counterclockwise direction; emergency stop of equipment; turning on or off of running indicator light; start or stop of cutting oil injection; steady rest The clamping or loosening of the tailstock; the stop or release of the tailstock; the opening and closing control and emergency stop of the fixed door, etc.

In addition, the control results of the above non-sequential control commands do not use the PLC output interface in the prior art, but are controlled by a program and displayed to the user.

The machine tool control device in the present invention uses an existing PLC to process a large number of input and output signals required to control the machine tool, and the PLC is also used in the above-mentioned operations. However, in the PLC control command of the present invention, the input and output modes of the non-sequential control command are processed with a program instead of using an interface directly connected to the switch. Like this, the machine tool control device in the present invention can reduce costs and improve Various effects such as reliability and simplicity of design.

First of all, the machine tool control device in the present invention accepts user commands for setting program aspects of PLC input and output interface status (Status) through the display unit and keyboard on the main operation panel.

When such a specific keyboard input according to the user setting is found, the control device in the present invention replaces the input interface used by the PLC, and transmits the input information to the PLC through a specific method, that is, it can replace the switch for the existing PLC input interface.

In addition, the control device in the present invention displays the PLC control results of non-sequential control commands on the display screen of the main operation panel through communication means, without using other display elements such as indicator lights controlled by the PLC interface.

In this way, the machine tool control device in the present invention uses the original PLC, and can save or reduce the input and output interfaces of the PLC.

In the following description, the interface information generated by the control device in the present invention through the program is respectively referred to as "interface input information" and "interface output information", so as to correspond to the input and output interfaces of the PLC and are composed of switches, indicator lights, Interface input and output generated by LED. The interface input information corresponds to the user's non-sequential control command, while the interface output information is the result information of the non-sequential control command. Here, the command and its process that are processed through the interface input information and interface output information are referred to as "program-interface corresponding command".

Fig. 3 is a block diagram of a machine tool control device in the present invention.

As shown in FIG. 3 , the machine tool control device 300 of the present invention includes: a main operation panel 310 , a numerical control unit 320 , a PLC 330 , a mechanical action input and output unit 340 , a servo (Servo) control unit 350 and a servo motor (Servomotor) 360 .

The main operation panel 310 can communicate with the numerical control unit 320 through relevant communication protocols, and receive the user's control commands and send them to the numerical control unit 320 . In addition, the main operation panel 310 receives the output of the numerical control unit 320 and displays the corresponding image to the user, so that the user can monitor the state of the machine tool in real time.

The main operation panel 310 accepts the setting of the program-interface correspondence command used by the user for directly controlling the PLC 330 , and transmits the setting to the numerical control unit 320 when the setting is input.

The main operation panel 310 includes an operation panel control unit 311 , a display unit 313 , and a keyboard 315 . According to specific embodiments, an input output board (not shown) may also be included.

The display unit 310 can use displays such as a cathode ray tube (CRT), a popular LCD, a thin film transistor (TFT) LCD, and an organic light emitting diode (Organic Light Emitting Diodes: OLED), and accepts the output of the operation panel control unit 311 and displays it. for user confirmation.

In addition, the display unit 313 may include a touch screen function.

The content displayed by the display unit 313 includes monitoring information on various control states of the machine tool. When the user wants to set and input related control commands and program-interface corresponding commands, various guide information is displayed to help the user.

The operation panel control unit 311 transmits various control commands input by the user through the keyboard 315 to the numerical control unit 320 .

When the user needs to set a program-interface corresponding command, the operation panel control unit 311 outputs guide information to help the user operate through the display unit 313, so as to help the user set the program-interface corresponding command.

The operation panel control unit 311 associates the specific key input with the interface input information in order to process the program interface input information of the non-sequential command. Thus, when the key is operated, the interface input information corresponding to the above-mentioned key is transmitted to the numerical control unit 320 . Such keys designated as non-sequential control commands preferably use individual function keys in the keyboard 315.

In addition, the operation panel control unit 311 receives the control results of the non-sequential control commands of the PLC 330 from the numerical control unit 320 , that is, interface output information, and displays them to the user through the display unit 313 . At this time, the operation panel control unit 311 not only displays the interface but also specifically displays various information.

The keyboard 315, as a device for receiving various control commands including non-sequential control commands from the user, may include a certain number of function keys (Function Key).

In one embodiment of the present invention, the keyboard 315 is taken as an example for illustration, but the present invention is not limited thereto, a mouse, a jog knob (Jog shuttle), and other wired/wireless interfaces can be used, as long as the operation panel control unit 311 can be connected and users.

The machine tool control device 300 in the present invention can process the non-sequential control commands and their results directly controlled by the user through the keyboard 315 or the touch screen in the input and output interfaces of the PLC 330 by using the program-interface corresponding commands. However, according to specific embodiments, specific interfaces among such PLC input and output interfaces can use existing methods. At this time, the main operation board 310 may include an input and output board.

The interfaces of the PLC330 are processed through program-interface corresponding commands, or using existing methods, which can be determined according to the user's operation convenience and habits.

The numerical control unit 320 controls the entire movement of the machine tool through the PLC 330 and the servo control unit 350 according to the preset numerical control program, and communicates with the main operation panel 310 by using relevant communication protocols to receive and send relevant commands. In addition, data exchange with PLC330 is performed by a specific method including a normal communication method.

The numerical control unit 320 sends sequential control commands to the PLC 330 according to the relevant numerical control programs, receives and processes the control results related to the control from the PLC 330 , and outputs them to the display unit 313 . Moreover, the numerical control unit 320 outputs related control commands to the servo control unit 350 to control the servo motor.

When the numerical control unit 320 receives the interface input information from the operation panel control unit 311 through the user operation in order to process the program-interface corresponding command, it confirms through the set non-sequential control command, and sends the corresponding interface corresponding command to PLC330 output.

In addition, the numerical control unit 320 receives relevant control results of the machine tool (not shown) controlled by the PLC 330 according to the interface corresponding command, generates corresponding interface output information and sends it to the main operation panel 310 .

In order for the numerical control unit 320 to send interface corresponding commands to the PLC 330 and to receive control results from the PLC 330 , the numerical control unit 320 and the PLC 330 may use a shared memory (not shown).

Numerical control unit 320 and PLC330 allocate relevant positions in the shared memory (not shown) to the display of corresponding commands and control results of the interface, and manage the memory value (hereinafter referred to as flag (Flag)), so that relevant programs can be sent and accepted - Information about the command corresponding to the interface.

According to another embodiment, the numerical control unit 320 can send an interface corresponding command to the PLC 330 through general communication, and the PLC 330 stores it in a specific internal memory (not shown), so as to process it as a set interface input. Similarly, the control result of the command corresponding to the interface is transmitted to the numerical control unit 320 through communication means, and the command corresponding to the program-interface in the present invention can be processed.

The PLC 330 includes sub-memory (not shown) and common memory (not shown) for input/output interface, and actually controls the motion of the machine tool (not shown) through the mechanical motion input/output unit 340 . In order to perform control, the PLC 330 communicates with the numerical control unit 320 through a specific communication protocol, and receives relevant sequential control commands from the numerical control unit 320 .

In addition, the PLC 330 receives non-sequential control commands from the user in real time through the main operation panel 310, and controls the machine tool (not shown). At this time, the PLC 330 reads the flag in the shared memory (not shown), and sends the control command corresponding to the interface corresponding command in the numerical control unit 320 to the mechanical operation input and output unit 340 .

Among the control commands to be executed, the PLC330 does not read out the stored value of the usual input and output interface for the operation (such as emergency stop) corresponding to the command processing through the program-interface, but reads out the sign transmitted by the numerical control unit 320 and executes it. . In this way, when compiling the ladder diagram executed by the PLC330, the user sets it so that the PLC330 reads the flag instead of the stored value for the internal input and output interface, so that it can process the operation corresponding to the command corresponding to the program-interface.

The mechanical action input and output unit 340 includes a mechanical action input unit 341 and a mechanical action output unit 343 .

Mechanical motion input unit 341 receives a control result of a machine tool (not shown) and sends it to PLC 330 .

The mechanical action output unit 343 receives control commands from the PLC 330 and controls the machine tool (not shown) to perform corresponding actions.

The servo control unit 350 is connected to the servo motor 360 and controls the servo motor 360 according to the control of the numerical control unit 320 .

In the above-mentioned embodiments, the operation panel control unit 311 and the numerical control unit 320 in the main operation panel 310 are provided separately, but the functions of the operation panel control unit 311 may also be included in the numerical control unit 320 .

In the machine tool control device of the present invention having the above-mentioned structure, its numerical control device 320 recognizes the command of the main operation panel 310, and executes the machine tool action command according to the program content, and the PLC330 executes the non-sequential command according to the program-interface corresponding command of the numerical control unit 320 control commands.

In the program-interface corresponding command, the user inputs the control command through the keys on the keyboard 315 . As another example, an image displayed in the display unit 313 of the main operation panel 310 and an input key on the keyboard 315 may be used.

In the program-interface correspondence command, existing indicator lights or other display elements for displaying control results correspond to graphics on the display unit 313 .

The user can use the main operation panel 310 to perform user settings for program-interface correspondence commands corresponding to non-sequential control commands. The content of the user setting includes relevant key designation on the keyboard 315 for the relevant program-interface corresponding command, and the display method of the display unit 313 . This setting can use the preset default setting, or set it at any time according to the user's operation mode or habit.

After the setting is completed, the user does not need to use the existing switches to operate. Instead, the user operates the keys on the keyboard 315, or uses the keyboard 315 to move the cursor (Cursor) on the display unit 313 to complete the control. .

This method of setting program-interface corresponding commands and executing the corresponding non-sequential control commands can be modified in various ways as long as it is a professional in the technical field to which the present invention belongs. In the embodiment of the present invention, signs are used, and periodic information between the numerical control unit 320 and the PLC 330 can also be confirmed through various communication methods, and corresponding program-interface corresponding commands can be executed.

Hereinafter, the user interface connection method of the program-interface corresponding command will be described in detail with reference to FIG. 4 .

Fig. 4 is a schematic diagram of the main operation panel of the machine tool control device in one embodiment of the present invention.

The main operation panel 310 in FIG. 4 can provide various user interfaces, which are used for ordinary control and monitoring of the machine tool, and provide convenience when setting program-interface corresponding commands and performing operations. The main operation panel 310 in FIG. 4 corresponds to the main operation panel 310 of the machine tool control device 300 in FIG. 3 , and will be described here based on FIG. 3 .

The display screen 4 a in FIG. 4 corresponds to the display unit 313 , and the input key 4 b , function key 4 c and operation panel 4 d correspond to the keyboard 315 .

As shown in FIG. 4, when a separate operation panel 4d is provided, most of the switches and display parts can be omitted. However, a minimum number of switches may be left on the operation panel 4d for the convenience of the user.

The switches on the operation panel 4d can be processed through program-interface corresponding commands, and existing interfaces can also be used. A power switch, an emergency stop switch, an override control switch, etc. can be arranged on the operation panel 4d.

The display screen 4a display among the present invention corresponds to the switch (hereinafter referred to as "software switch") and the figure of the indicator lamp of various switches and indicator lights on the existing operating panel 2d in Fig. 2 . The switches that can use this software include the operation indicator switch, the automatic door opening and closing control switch, the steady rest control switch, the tool correction switch, etc.

The operation panel control unit 311 associates each function key 4 with a software switch, and enables the user to operate the function key while viewing the software switch image on the display screen 4a. However, it is not essential to display the software switch image on the display screen 4a.

According to another embodiment, if there is no one-to-one correspondence between each software switch and the function key 4c, some software switches can be operated by using the input key 4b to move the cursor on the display screen 4a.

According to another embodiment, the display screen 4a has a touch screen function, which replaces the function key 4c and acts as a switch.

In addition, various LEDs or indicator lights on the conventional operation panel 2d in FIG. 2 are displayed on the display screen 4a in the main operation panel 310 of the present invention in FIG. 4 . Moreover, the display screen 4a can be configured as a program PLC interface dedicated screen different from the usual display content.

As shown in FIG. 4 , the corresponding program-interface commands including the corresponding relationship between the software switch and the function key 4c can be set through the relevant guide on the display unit 313 .

FIG. 5 is a schematic diagram of the display screen of the main operation panel in FIG. 4 .

5a in the display screen shows that the user sets the function key 'F1' as the on-off control switch of the running indicator light, and sets 'F2' as the automatic door control switch. In this way, the user can turn on and off the running indicator light through the F1 key, and also control the automatic door by pressing the F2 key repeatedly. Of course, the user can change this key setting at any time.

In addition, 5b on the display screen indicates that the chuck clamp (Chuck clamp) and the lower end gear (Gear) are not assigned individual keys, but are adjusted by the cursor on the display screen.

In addition, the control result of this user control is transmitted to the display unit 313 of the main operation panel 310 through the PLC 330, such as 5c on the display screen, and the part indicating the relevant status is prompted by methods such as color change or flickering.

Fig. 6 is an action flowchart of the machine tool control device in the present invention, showing the execution process of non-sequential control commands.

Hereinafter, the operation of the machine tool control device according to the present invention will be described with reference to FIGS. 3 to 6 .

During the operation of the machine tool, the operation panel control unit 311 on the main operation panel 310 accepts non-sequential control commands from the user through the keyboard 315 . Before accepting the non-sequential control command, the user may set the user interface for inputting the non-sequential control command. In addition, the operation panel control unit 311 can display a related guide (Guide) to help the user set the interface through the display unit 313 .

The operation panel control unit 311 sends the set interface input information corresponding to the non-sequential control command to the numerical control unit 320 (S603).

After receiving the interface input information, the numerical control unit 320 identifies the user's non-sequential control commands by analyzing the relevant interface input information, and outputs the corresponding interface commands to the PLC 330 . The output of the interface-compatible command is performed by marking a related flag on a shared memory (not shown) (S605).

During the execution of relevant control commands including a series of sequence control commands, PLC330 reads out the content of the shared memory to confirm whether there is an interface corresponding command. As a result of the confirmation, if there is an interface corresponding command, the PLC 330 sends the corresponding control command to the mechanical action output unit 343, so as to execute actions related to the user's non-sequential control command (S607).

In this way, PLC330 executes the user's non-sequential control command.

Fig. 7 is another action flow chart of the machine tool control device in the present invention, which is the process of displaying control results for non-sequential control commands.

Through the method in Fig. 6, after the user's related non-sequential control commands are executed on the machine tool, the PLC330 receives the control results through the mechanical action input unit 341, and transmits the above control results to the numerical control unit. The transfer of the control result is performed by marking the relevant flag on the shared memory (S701).

The numerical control unit 320 reads out the content of the shared memory to confirm whether the control result is marked. Confirm the result, if there is a control result, the numerical control unit 320 outputs the corresponding interface output information to the main operation panel 310 (S703).

The operation panel control unit 311 of the main operation panel 310 displays the preset specific control result corresponding to the received interface output information through the display unit 313 (S705).

Through the above-mentioned method, the machine tool control device in the present invention operates and displays the result of the user's non-sequential control command.

In the above description, the preferred embodiments of the present invention have been described, but the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can carry out various deformations to it within the scope of the technical thought of the present invention .

Claims (14)

1, a kind of machine control unit comprises: import the main operation plate of various machinings with setting value for the user; According to the setting value of accepting from above-mentioned main operation plate, export a series of numerical control units that are used for the sequential control order of machining; Accept the sequential control order from above-mentioned numerical control unit, and motor is carried out servo-controlled servo control unit by corresponding method; Accept the sequential control order from above-mentioned numerical control unit, and the PLC that the input and output of lathe is controlled by corresponding method; The order of the above-mentioned PLC of input and output or information, and transmit the mechanical input-output unit of order to lathe, described machine control unit is characterized in that:

Above-mentioned main operation plate is accepted at least one non-sequential control order from the user in above-mentioned lathe operational process, and the special interface input information of correspondence is sent to above-mentioned numerical control unit;

Above-mentioned numerical control unit is converted to the corresponding order of specific interface with above-mentioned interface input information, and is sent to above-mentioned PLC;

Above-mentioned PLC accepts the corresponding order of above-mentioned interface, and above-mentioned lathe is controlled.

2, machine control unit according to claim 1 is characterized in that above-mentioned non-sequential control order comprises:

The emergency stop of above-mentioned lathe; Control to the run indicator that shows above-mentioned lathe running status; To the open and close controlling of fixed gate and surmount control; Manually transfer movement control; The injection beginning of cutting oil or interruption; The clamping of centre frame or unclamp; The stop of tailstock or opening; The open and close controlling of fixed gate reaches and promptly stops.

3, machine control unit according to claim 1 is characterized in that:

Above-mentioned PLC from above-mentioned lathe accept and output at least a control result of above-mentioned non-sequential control order;

Above-mentioned numerical control unit is accepted the control result from above-mentioned PLC, and is converted into corresponding interface output information and outputs to above-mentioned main operation plate;

Above-mentioned main operation plate is accepted above-mentioned interface output information, and is shown to the user.

4, as machine control unit as described in the claim 3, it is characterized in that:

Above-mentioned numerical control unit and above-mentioned PLC further comprise can the input and output related data storer;

Above-mentioned numerical control unit is sent to above-mentioned PLC with the corresponding order of above-mentioned interface, and above-mentioned PLC with the process that above-mentioned control result is sent to above-mentioned numerical control unit is, in above-mentioned storer,, indicate by the sign of having set to corresponding order of above-mentioned interface and control result.

5, as machine control unit as described in the claim 3, it is characterized in that:

Above-mentioned PLC is according to can moving by the particular trapezium figure that program is implemented of accepting from above-mentioned numerical control unit;

Above-mentioned ladder diagram comprises corresponding order of above-mentioned interface and control result treatment information.

6, as machine control unit as described in the claim 3, it is characterized in that above-mentioned main operation plate comprises:

Input block is accepted user's above-mentioned non-sequential control order by specific input method;

Display unit shows the above-mentioned interface output information of acceptance to the user;

The operation panel control module, to be converted to above-mentioned interface input information and export above-mentioned numerical control unit to by the non-sequential control order of user of above-mentioned input block input, and, will with the pairing information of accepting of above-mentioned interface output information, output to above-mentioned display unit.

7, as machine control unit as described in the claim 6, it is characterized in that:

Above-mentioned display unit uses at least a method in the vision or the sense of hearing, shows to the user.

8, as machine control unit as described in the claim 6, it is characterized in that above-mentioned input block comprises:

Keyboard and can and be arranged at least a in the touch-screen on the above-mentioned input block by visuognosis.

9, as machine control unit as described in the claim 6, it is characterized in that:

Aforesaid operations plate control module shows the guide that helps the user to set by above-mentioned display unit, and described guide is to accept the above-mentioned input method of above-mentioned user's nonsequenced command and at least one in the above-mentioned interface output information display packing;

By above-mentioned input block, accept the setting that the user carries out according to above-mentioned guide.

10, a kind of lathe is characterized in that:

Claim 1 or 3 described machine control units are installed, and remove the wiring that the above-mentioned PLC IO interface be used to carry out above-mentioned non-sequential control order is used.

11, a kind of PLC interface disposal route of machine control unit, is controlled lathe, and is provided user interface by the main operation plate by the sequential control order that numerical control unit transmits according to PLC, it is characterized in that, may further comprise the steps:

Contain in the specific control command process of sequential control order in execution, by the step of above-mentioned main operation plate acceptance from user's specific non-sequential control order;

Above-mentioned main operation plate output is corresponding to the step of the special interface input information of above-mentioned non-sequential control order;

Above-mentioned numerical control unit is exported the step with the corresponding order of being accepted of the corresponding special interface of above-mentioned interface input information;

Above-mentioned PLC accepts the corresponding order of above-mentioned interface, and the step that above-mentioned lathe is controlled.

12, as the PLC interface disposal route of machine control unit as described in the claim 11, it is characterized in that, further comprising the steps of:

Above-mentioned PLC from above-mentioned lathe accept and output at least a control result's of above-mentioned non-sequential control order step;

Above-mentioned numerical control unit is accepted the control result from above-mentioned PLC, and the step of output corresponding interface output information;

Above-mentioned main operation plate is accepted above-mentioned interface output information, and will be shown to user's step corresponding to above-mentioned control result's content.

13, as the PLC interface disposal route of machine control unit as described in the claim 12, it is characterized in that:

Above-mentioned numerical control unit is exported the step of the corresponding order of above-mentioned interface, and at least one step that above-mentioned PLC exports in above-mentioned control result's the step is, in specific memory,, use the sign of having set to indicate to corresponding order of above-mentioned interface and control result.

14, as the PLC interface disposal route of machine control unit as described in the claim 12, it is characterized in that, further comprising the steps of:

Show that to the user step of guide, described guide are about at least one the setting the method for accepting above-mentioned nonsequenced command from the user and the above-mentioned interface output information display packing;

The step that the user sets according to above-mentioned guide input.

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