CN109213080B - Machine tool control method and device - Google Patents
Machine tool control method and device Download PDFInfo
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- CN109213080B CN109213080B CN201710514353.7A CN201710514353A CN109213080B CN 109213080 B CN109213080 B CN 109213080B CN 201710514353 A CN201710514353 A CN 201710514353A CN 109213080 B CN109213080 B CN 109213080B
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- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4093—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form 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
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/31—From computer integrated manufacturing till monitoring
- G05B2219/31399—Station corrects nc program, sends back modified program to program generator
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Abstract
The invention is suitable for the technical field of machine tools, and provides a control method and a device of a machine tool, wherein the method comprises the following steps: acquiring state parameters and processing product attributes of a machine tool; the machine tool scheduling strategy determining unit is used for generating a machine tool scheduling strategy according to the attributes of the processed products; determining a task to be executed corresponding to the state parameter according to the state parameter and a machine tool scheduling strategy; and determining a control instruction of the machine tool according to the task to be executed, wherein the control instruction is used for controlling the machine tool to complete the task to be executed. The embodiment of the invention realizes the purpose that the machine tool executes different task operations along with the change of task contents, and solves the problems that the existing machine tool control technology cannot adjust the production strategy per se along with the change of production tasks, the production mode is fixed and the adaptability is poor.
Description
Technical Field
The invention belongs to the technical field of machine tools, and particularly relates to a control method and a control device of a machine tool.
Background
With the development of social economy, the number of users using the product is increased, and the consumption speed of the product is increased. The existing product generation technology mainly adopts an automatic production line to produce, and completes tasks of processing, generating, packaging and the like of products by arranging corresponding robots on the production line, thereby realizing the purpose of automatic generation.
The corresponding manufacturing process of the existing machine tool control technology, such as automobile assembly and household appliance assembly, is relatively stable and uniform, the processing and production are mainly carried out through automatic flow operation, and each machine tool only needs to repeatedly execute fixed production operation. However, when a production task is changed, since each machine tool performs its own production operation, the control device of the machine tool has only simple control functions of turning on and off the machine tool, and cannot cope with the task change. Therefore, the existing machine tool control technology cannot adjust the production strategy of the machine tool along with the change of production tasks, is fixed in production mode and is poor in adaptability.
Disclosure of Invention
The embodiment of the invention aims to provide a control method and a control device for a machine tool, and aims to solve the problems that the existing machine tool control technology cannot adjust the production strategy of the machine tool along with the change of production tasks, the production mode is fixed, and the adaptability is poor.
In a first aspect, an embodiment of the present invention provides a method for controlling a machine tool, including:
acquiring state parameters and processing product attributes of a machine tool;
generating a machine tool scheduling strategy according to the attributes of the processed products;
determining a task to be executed corresponding to the state parameter according to the state parameter and the machine tool scheduling strategy;
and determining a control instruction of the machine tool according to the task to be executed, wherein the control instruction is used for controlling the machine tool to complete the task to be executed.
In a second aspect, an embodiment of the present invention provides a control device for a machine tool, including:
the state parameter acquiring unit is used for acquiring the state parameters of the machine tool and the attributes of the processed products;
the machine tool scheduling strategy determining unit is used for generating a machine tool scheduling strategy according to the attributes of the processed products;
the to-be-executed task determining unit is used for determining the to-be-executed task corresponding to the state parameter according to the state parameter and the machine tool scheduling strategy;
and the control instruction determining unit is used for determining a control instruction of the machine tool according to the task to be executed, and the control instruction is used for controlling the machine tool to complete the task to be executed.
In a third aspect, an embodiment of the present invention provides a control device for a machine tool, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the following steps when executing the computer program:
acquiring state parameters and processing product attributes of a machine tool;
generating a machine tool scheduling strategy according to the attributes of the processed products;
determining a task to be executed corresponding to the state parameter according to the state parameter and the machine tool scheduling strategy;
and determining a control instruction of the machine tool according to the task to be executed, wherein the control instruction is used for controlling the machine tool to complete the task to be executed.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored, and when executed by a processor, the computer program implements the following steps:
acquiring state parameters and processing product attributes of a machine tool;
generating a machine tool scheduling strategy according to the attributes of the processed products;
determining a task to be executed corresponding to the state parameter according to the state parameter and the machine tool scheduling strategy;
and determining a control instruction of the machine tool according to the task to be executed, wherein the control instruction is used for controlling the machine tool to complete the task to be executed.
The control method and the device for the machine tool provided by the embodiment of the invention have the following beneficial effects:
according to the method and the device, the working state of the machine tool is determined by obtaining the state parameters of the machine tool, the corresponding machine tool scheduling strategy is generated according to the obtained attributes of the processed product, so that the task to be executed is obtained according to the state parameters of the machine tool and the machine tool scheduling strategy, the corresponding machine tool control instruction is determined according to the task to be executed, and the machine tool is controlled to complete the corresponding task to be executed, so that the purposes that the machine tool executes different task operations along with the change of task contents are achieved. Compared with the existing machine tool control technology, in the embodiment of the invention, the machine tool does not repeatedly execute the same set of production operation any more, but responds to the corresponding production operation in the control instruction according to the control instruction which is generated by the control device and is related to the task to be executed, thereby realizing the purpose of carrying out production scheduling on the machine tool in real time and improving the adaptability of the machine tool. And when the task needs to be adjusted in real time, if the requirement of a certain task is suddenly increased, the user can control the machine tool to respond to the task change by adjusting the machine tool scheduling strategy, so that the task change adaptability of the machine tool is further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating a control method for a machine tool according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a detailed implementation of a control method S103 of a machine tool according to another embodiment of the present invention;
fig. 3 is a flowchart illustrating an implementation of a control method S104 of a machine tool according to another embodiment of the present invention;
fig. 4 is a flowchart illustrating a control method for a machine tool according to another embodiment of the present invention;
fig. 5 is a flowchart illustrating a detailed implementation of a control method S401 of a machine tool according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of a control device of a machine tool according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a control device of a machine tool according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
According to the method and the device, the state parameters of the machine tool are obtained, the working state of the machine tool is determined, the corresponding machine tool scheduling strategy is generated according to the obtained attributes of the processed product, so that the task to be executed is obtained according to the state parameters of the machine tool and the machine tool scheduling strategy, the corresponding machine tool control instruction is determined according to the task to be executed, and the machine tool is controlled to complete the corresponding task to be executed, so that the purposes that the machine tool executes different task operations along with the change of task contents are achieved, and the problems that the existing machine tool control technology cannot adjust the production strategy of the machine tool along with the change of the production task, the production mode is fixed, and the adaptability is poor are solved.
In the embodiment of the present invention, the main execution unit of the process is a control device of the machine tool. The control device of the machine tool is used for controlling the machine tool to complete a preset automatic production task; the machine tool is applied to an automatic production system to complete production operation of a product to be processed, and optionally, the machine tool and a robot can work cooperatively to complete corresponding automatic production tasks. The control device of the machine tool may be an independent control device, such as a server, a computer, or a terminal device with both computing and communication capabilities; the control device of the machine tool may be integrated with the machine tool. Fig. 1 shows a flowchart of an implementation of a control method for a machine tool according to an embodiment of the present invention, which is detailed as follows:
in S101, state parameters of the machine tool and attributes of the processed product are acquired.
In this embodiment, the control device of the machine tool will acquire the state parameters of the machine tool through the communication connection with the machine tool, where the state parameters of the machine tool are mainly used for characterizing the operating state information of the machine tool, including but not limited to one or a combination of at least two of the following: the system comprises a machine tool idle mark, machine tool last task information, machine tool position parameters, machine tool equipment identification, machine tool load state, machine tool fault marks and task completion time information. Therefore, after acquiring the state parameters of the machine tool, the control device can determine the working state of the machine tool according to the state parameters so as to determine the content of the next executed task.
In this embodiment, the control device further needs to acquire the attributes of the processed product, where the attributes of the processed product include: the type information of the processed product, the volume information of the processed product, the precision information of the processed product and other attribute parameters. The attributes of the processed product are automatically submitted to a control device in a CAD (computer-aided design) design stage before production operation, and the control device only needs to inquire according to identity information RFID (radio frequency identification).
Optionally, in this embodiment, the attribute of the processed product may be obtained through user input, or the control device may determine the attribute of the processed product through, for example, picture data of the processed product or data obtained by a sensor. For example, a camera is arranged on the machine tool, and the control device acquires a shot image of the camera and determines the attribute of a product to be processed through an image analysis algorithm
In this embodiment, the control device of the machine tool may obtain the state parameters of multiple machine tools at the same time, and specifically, the control device of the machine tool generates a state parameter obtaining instruction and sends the state parameter obtaining instruction in a broadcast manner, so that all machine tools belonging to the control device return to their corresponding state parameters after receiving the broadcast information. Of course, after completing a production task, the machine tool can automatically send its own status parameters to the control device for informing the control device that the task is completed and waiting for the control device to assign the next operation task.
Optionally, in this embodiment, the control device of the machine tool acquires the state parameters of the machine tool at preset time intervals. In order to improve the timeliness of the production task allocation of the control device, the state parameters of the machine tool are automatically inquired at preset time intervals, and the working state of the machine tool is summarized in time, so that a corresponding production strategy is formulated and the production task is issued.
In this embodiment, the control device of the machine tool may obtain the state parameters of the machine tool through a wireless communication network, which includes but is not limited to: a WIFI communication network, an infrared communication network, a Bluetooth communication network, a mobile communication network, a ZigBee communication network and the like; the control device may also obtain the state parameters of the machine tool through wired communication methods, including but not limited to: and wired communication methods such as serial interface communication, parallel interface communication, ethernet port communication, and USB interface communication. Particularly, if the control device is integrated in the machine tool, the state parameters in the storage module of the machine tool can be directly read, so that the purpose of obtaining is achieved. Preferably, in this embodiment, the communication mode between the control device and the machine tool is implemented through the ethernet interface, so that the application range of the communication through the ethernet interface is wider than that of the existing communication technology, and a corresponding industrial production communication protocol does not need to be purchased, thereby reducing the communication cost.
In addition, if the control device of the machine tool is integrated into a certain machine tool and the control device is also used to control another machine tool other than the machine tool, the machine tool of the integrated control device may acquire the state parameters of the other machine tool by communicating with the other machine tool, or may acquire the state parameters of the other machine tool by transmitting a machine tool state parameter acquisition command to the server, and the state parameters of the other machine tool are collected by the server and fed back to the machine tool integrated with the control device.
In this embodiment, a user may configure a virtual machine tool state interface in the machine tool, so as to send the state parameters of the machine tool to the control device of the machine tool, and the control device of the machine tool may also directly invoke the virtual machine tool control interface to perform parameter acquisition, thereby improving the efficiency of parameter acquisition.
In S102, a machine tool scheduling strategy is generated according to the attributes of the processed product.
In this embodiment, the control device performs matching operation according to the obtained attribute of the processed product and a preset database, and determines a machine tool scheduling policy corresponding to the processed product. For example, for a small machined product with the same volume, such as a children toy, the corresponding machine tool scheduling strategy may be an assembly scheduling strategy of a small part; for a larger machined product such as a refrigerator with a larger volume, the corresponding machine tool scheduling strategy may be an assembly scheduling strategy for a large instrument. Therefore, the corresponding machine tool scheduling strategies will be different according to different processing products.
In this embodiment, before performing automatic production, a user may configure corresponding machine tool scheduling policies for different attributes of a processed product, that is, the machine tool scheduling policies are a production experience database of the user, and as the types of the processed products of the user increase, the machine tool scheduling policies included in the database also increase. If the user needs to perform automatic production on the same machined product, the corresponding machine tool scheduling strategy is only needed to be called, and setting is not needed again, so that the production efficiency is improved.
In this embodiment, the control device may perform a search operation from a preset scheduling policy database according to the attribute of the processed product, and select a machine tool scheduling policy corresponding to the attribute of the processed product; and extracting a plurality of corresponding execution tasks from a preset scheduling strategy database through the attributes of the processed product and a preset machine tool scheduling strategy extraction algorithm, and then generating a corresponding machine tool scheduling strategy through the plurality of execution tasks. In this case, the control device may query the machine tool scheduling policy corresponding to another processed product having a high similarity to the attribute of the processed product, extract the corresponding execution task content, combine and generate the machine tool scheduling policy for the attribute of the processed product, and store the correspondence between the attribute of the processed product and the machine tool scheduling policy.
For example, the generation process of the water cup processing may be similar to the generation process of the water cup processing, and therefore if it is determined that the attribute of the processed product is the water cup processing and the database does not match the machine tool scheduling policy of the water cup processing, the control device extracts part of the contents from the machine tool scheduling policy of the water cup processing as the contents of the machine tool scheduling policy of the water cup processing, and extracts corresponding contents from the machine tool scheduling policy of the next processed product with higher matching degree similarity, so as to obtain the machine tool scheduling policy of the water cup processing by combining.
In S103, according to the state parameters and the machine tool scheduling strategy, the task to be executed corresponding to the state parameters is determined.
Optionally, in this embodiment, the machine tool scheduling policy may include priority information of each execution task, and for an execution task with a higher priority, the control device for automated production preferentially allocates the execution task to the machine tool whose state parameter matches the state parameter, thereby achieving the purpose of preferentially processing the emergency task. For a general automatic production technology of a production line, the operation can be performed only according to a fixed flow, and a corresponding scheduling strategy cannot be adopted for an emergency or an emergency, so that the processing efficiency is low. The embodiment can regulate and control the execution sequence of each task in real time by adjusting the priority information of the executed tasks, and has high flexibility. In this case, there is not necessarily a sequential relationship between the tasks completed by the machine tool and the tasks to be executed, that is, the completed tasks and the tasks to be executed do not necessarily belong to the same generation flow, but the tasks to be executed corresponding to the completed tasks and the tasks to be executed are distributed according to the actual task state and the executable content of the machine tool.
In this embodiment, the operation to be completed in the next step of the machine tool, that is, the task to be executed in this embodiment, is determined according to the state parameter of the machine tool and the machine tool scheduling policy corresponding to the attribute of the processed product. It should be noted that the task to be executed is specifically an execution step or a sub-task, such as a loading task, a processing task, an assembling task, and the like.
In S104, a control instruction of the machine tool is determined according to the task to be executed, where the control instruction is used to control the machine tool to complete the task to be executed.
In this embodiment, the control device of the machine tool may determine the control command of the machine tool according to the task to be executed and the control command conversion algorithm, and send the determined control command to the machine tool. And after receiving the control instruction, the machine tool executes corresponding production operation according to the content of the control instruction, thereby completing the task to be executed.
In this embodiment, if the number of the control instructions corresponding to the task to be executed is multiple, the control device may encapsulate multiple control instructions in one instruction message, and send the instruction message to the machine tool that completes the task to be executed; the plurality of control commands may be sequentially and respectively sent to the machine tool according to the predicted machine tool command response time.
In this embodiment, the user sets in advance the correspondence between each task and the machine tool control instruction, so that the control device can query the control instruction corresponding to the task to be executed according to the correspondence. It should be noted that, if a plurality of machine tools need to work in coordination to execute a task, the machine tool control device may correspond to a plurality of control commands and send corresponding control commands to the plurality of machine tools, respectively. If the other machine tools are in the idle state, the related operation of S104 is executed to the plurality of machine tools at the same time; otherwise, if the machine tool is in the non-idle state, the related operation of S104 is suspended, and the related operation of S104 is executed after all the machine tools are in the idle state.
As can be seen from the above, the method for controlling a machine tool according to the embodiments of the present invention determines the working state of the machine tool by obtaining the state parameter of the machine tool, and generates the corresponding machine tool scheduling policy according to the obtained attribute of the processed product, so as to obtain the task to be executed according to the state parameter of the machine tool and the machine tool scheduling policy, and determine the corresponding machine tool control instruction according to the task to be executed, so as to control the machine tool to complete the corresponding task to be executed, thereby implementing the purpose that the machine tool executes different task operations according to the change of the task content. Compared with the existing machine tool control technology, in the embodiment of the invention, the machine tool does not repeatedly execute the same set of production operation any more, but responds to the corresponding production operation in the control instruction according to the control instruction which is generated by the control device and is related to the task to be executed, thereby realizing the purpose of carrying out production scheduling on the machine tool in real time and improving the adaptability of the machine tool. And when the task needs to be adjusted in real time, if the requirement of a certain task is suddenly increased, the user can control the machine tool to respond to the task change by adjusting the machine tool scheduling strategy, so that the task change adaptability of the machine tool is further improved.
Referring to fig. 2, fig. 2 is a flowchart illustrating an implementation of a control method S103 of a machine tool according to another embodiment of the present invention. With respect to the embodiment shown in fig. 1, the method S103 for controlling a machine tool provided in this embodiment specifically includes S201 and S202:
further, as another embodiment of the present invention, the status parameter includes a position parameter of the product to be processed. The S103 specifically includes:
in S201, a task execution position parameter included in the machine tool scheduling policy is extracted.
In this embodiment, the status parameters returned by the machine tool further include a to-be-processed product location parameter, and after the control device for automated production acquires the status parameter, in order to determine the location of the to-be-processed product executed in the machine tool scheduling policy, the control device extracts the to-be-processed product location parameter included in the status parameter, determines whether the location of the to-be-processed product is in a location area corresponding to the to-be-executed task, and further determines whether the to-be-processed product in the machine tool needs to be moved.
In this embodiment, after determining a machine tool scheduling policy corresponding to a state parameter of a machine tool, the control device extracts a task execution position parameter corresponding to a task to be executed in the machine tool scheduling policy, where the task execution position parameter is used to indicate position information defined when the task to be executed is completed. In the case that some tasks need to be completed in a limited position area, operations such as material taking and material placing are performed, or the distance between the target robot and the product to be processed is limited, the machine tool scheduling strategy includes a task execution position parameter, so that the control device controls the product to be processed in the machine tool and/or the target robot to move to a corresponding position to complete the tasks.
In this embodiment, the control device also obtains a position parameter corresponding to the target robot, compares the obtained position parameter of the robot and a position parameter of a product to be processed in the state parameters with a task execution position parameter in a machine tool scheduling policy, and executes the relevant operation of S104 if the position corresponding to the position parameter of the robot and the position corresponding to the position parameter of the product to be processed are both within a position area corresponding to the task execution position parameter; on the contrary, if the position of the to-be-processed product and/or the robot in the machine tool is not within the position area corresponding to the to-be-executed task, the relevant operation of S202 is executed.
It should be noted that the task execution position parameter is not limited to represent a specific target position point, but may also be information representing a relative distance between the two, that is, the task execution position parameter may be used to represent a required relative distance position when the target robot and the machine tool cooperate to complete a task to be executed.
In S202, according to the position parameter of the to-be-processed product included in the state parameter, the to-be-processed product in the machine tool is controlled to move to the position corresponding to the task execution position parameter.
In this embodiment, the control device of the machine tool determines the movement path according to the position parameter of the product to be processed and the task execution position parameter included in the state parameters, and controls the transmission component in the machine tool according to the preset movement path, so that the product to be processed moves to the position corresponding to the task execution position parameter.
In this embodiment, a user may configure a virtual machine tool position interface in the machine tool, which is used to store the machine tool position parameters of the machine tool itself, and package the machine tool position parameters in the machine tool state parameters, and send the machine tool position parameters to the control device of the automated production. On the other hand, the control device for automatic production can also directly access the machine tool position interface to monitor the position information of the machine tool in real time so as to judge whether the machine tool reaches the position corresponding to the task execution position parameter.
In the embodiment of the invention, the control device extracts the machine tool position parameters contained in the state parameters and the task execution position parameters contained in the machine tool scheduling strategy and controls the machine tool to move according to the two parameters, thereby realizing the purpose of scheduling production equipment and solving the problem that the positions of the machine tool and the robot are fixed and the task scheduling and the task support cannot be realized in the prior art.
Referring to fig. 3, fig. 3 is a flowchart illustrating a control method of a machine tool according to another embodiment of the present invention. The difference from the embodiment shown in fig. 1 is that S104 in the control method of the machine tool provided in this embodiment specifically includes S304, which is detailed as follows:
since the specific implementation manners of S301 to S303 are completely the same as S101 and S103 in fig. 1, please refer to the related descriptions of S101 to S103 for detailed explanation, which is not described herein again.
In S304, sending the processing flow information corresponding to the task to be executed to the machine tool, where the processing flow information is used for the machine tool to perform processing operation on the workpiece to be processed according to the processing flow information.
In this embodiment, a control device of a machine tool acquires a task to be executed, determines machining flow information corresponding to the completion of the task to be executed, and sends the determined machining flow information to the machine tool through communication connection between the control device and the machine tool.
In this embodiment, a user may configure a virtual machining process information interface in the machine tool, which is used to receive the machining process information sent by the control device, and send the machining process information to the processor of the machine tool after the receiving is completed, so that the processor of the machine tool performs a machining operation on a workpiece according to the machining process information.
Optionally, in this embodiment, after the control device of the machine tool finishes sending the machining flow information, a machining start instruction is sent to the machine tool. And after receiving the machining starting instruction, the machine tool can execute corresponding machining operation according to the machining flow information. The machine tool receives a machining starting instruction sent by the control device through a machining starting interface preset by a user.
Optionally, after the start instruction is sent, the control device for automated production executes the relevant operation of S101, that is, the control device obtains the state parameters of the machine tool in real time or at preset time intervals, and determines whether the machine tool has completed the task to be executed, so as to allocate a new task to the machine tool in time.
In the embodiment of the invention, the corresponding machining process information is sent to the machine tool, so that the machine tool can perform corresponding machining process operation according to different tasks to be executed. Compared with the existing automation technology, for different workpieces to be processed, the workpieces are allocated to different machine tools for processing, namely, the corresponding processing flow of each machine tool is fixed and unchanged, so that the adaptability is poor, and the scheduling of tasks is not facilitated. The embodiment of the invention can adjust the processing flows of different machine tools in real time, so that the machine tools can adapt to the processing operation of different workpieces to be processed, and the flexibility of automatic production is improved.
Referring to fig. 4, fig. 4 is a flowchart illustrating an implementation of a control method of a machine tool according to another embodiment of the present invention. With respect to the embodiments described in fig. 1 to fig. 3, the method for controlling a machine tool according to the present embodiment further includes S401 and S402, which are detailed as follows:
further, as another embodiment of the present invention, after S103, the method further includes:
in S401, according to the task type of the task to be executed, generating an external control instruction of an external controller; wherein, the external controller is used for controlling the external equipment of the machine tool.
In this embodiment, if the task to be executed requires the cooperation of an external device other than the machine tool, the control device may control the external device through an external controller, where the external device includes but is not limited to one or a combination of at least two of the following devices: the device comprises guide rail equipment, positioner equipment, machining tool equipment, transmission equipment and the like. The external Controller may be a Programmable Logic Controller (PLC).
In this embodiment, in order to improve the execution efficiency of the automated production system, the control terminal of the machine tool delivers the logic processing task of the external controller to the control device side for processing, that is, the external controller directly executes the corresponding operation according to the command issued by the control device. Specifically, a user sets a corresponding relationship between a task type and an execution action in a general register, i.e., a D register, of an external controller, and when a control device of a machine tool needs to perform a corresponding external device operation task, sends a command instruction corresponding to the task type to the external controller of the corresponding external device, and after receiving the command instruction sent by the control device, the external controller queries an operation content corresponding to the command in the D register and controls the external device to execute the corresponding operation.
In this embodiment, since the external controller has lower logic processing efficiency than the control device of the machine tool, and cannot be implemented when performing complicated operation processes, which reduces the technical development of automated production, in this embodiment, the external controller directly completes the corresponding processes according to the instruction of the control device, and the operation of the operation processing is completed by the control device, which improves the processing efficiency and also expands the application range of the external controller.
In S402, the external control instruction is sent to the external controller.
In this embodiment, the control device of the machine tool sends the generated external control instruction to the external controller, so that the external controller controls the corresponding external device to complete the corresponding production operation according to the external control instruction.
In this embodiment, the control device of the machine tool may be connected to a plurality of external controllers, each external controller corresponding to one or at least two external devices. The control device of the machine tool determines the external equipment corresponding to the task type according to the corresponding task type in the external control instruction, then determines the corresponding external controller according to the external equipment, thereby obtaining the equipment identifier of the corresponding external controller, and sends the external control instruction to the external controller corresponding to the equipment identifier.
In this embodiment, the control device of the machine tool sends the external control command to the external controller through a wired communication mode or a wireless communication mode, so as to achieve the purpose of remote control and improve the control range and the production efficiency.
In the embodiment of the invention, the external equipment required by the task is determined according to the task type of the task to be executed, and the corresponding external control instruction is generated, so that the control device of the machine tool can control the machine tool to perform production operation, and can also control the external equipment of the machine tool, thereby performing unified management on the production process of the machine tool, and controlling the machine tool and the external equipment to perform corresponding operation through the control device for complex production operation.
Referring to fig. 5, fig. 5 is a flowchart illustrating an implementation of a control method S401 of a machine tool according to another embodiment of the present invention. With respect to the embodiment shown in fig. 4, the method S401 for controlling a machine tool provided in this embodiment specifically includes S501 and S502, which are detailed as follows:
in S501, the external device feature information included in the task to be executed is extracted.
In this embodiment, when the external controller controls the external device to complete the corresponding operation, in addition to the state information of the external device required by the operation, information such as the start time of the external device and the parameter setting of the external device needs to be determined, where the parameter setting information is related to different external devices, and if the task to be executed needs to heat the device, the parameter setting information may be a heated temperature value; if the tool equipment needs to be machined to complete the task to be executed, the parameter setting information can be the rotation frequency of the tool, so that the task information to be executed is used for determining the working mode state of the corresponding required external equipment, and also contains external equipment characteristic information which is used for indicating the relevant characteristic parameters of each external equipment.
In this embodiment, the external device feature information includes, but is not limited to, one or a combination of at least two of the following: starting time information of the external equipment, starting opportunity information of the external equipment, position information corresponding to the external equipment, parameter setting information of the external equipment and the like.
In S502, the external control instruction of the external controller is generated according to the task type and the external device feature information.
In this embodiment, the control device of the robot generates an external control command according to the action type determined in S401 and the external device feature information extracted in S501, so that the external controller adjusts the operating state and device parameters of each external device according to the external control command to execute the corresponding production operation. It should be noted that the task type may correspond to one or at least two external devices, and each external device corresponds to one external device feature information, that is, one task type may correspond to a plurality of external device feature information, and the control device determines the corresponding external device according to the task type, establishes a corresponding relationship between the external device and the external device feature information, and generates an external control instruction according to the corresponding relationship. And after receiving the external control instruction, the external controller respectively performs corresponding control setting on each external device.
It should be noted that, in this embodiment, if the task type corresponds to two or more external devices, and the external devices are managed by different external controllers, corresponding external device control instructions are generated according to the number of the external controllers, and the external device control instructions are sent to the external controllers respectively.
In this embodiment, a user may divide corresponding storage sections in a storage module of the external controller in advance, and store external device state information corresponding to the working state of the external device and corresponding external device feature information, respectively. For example, the storage area of D [200] in the external controller is used for storing the state information of the external device, and the storage areas of D [201] and D [202] are used for storing the characteristic information of the external device.
In the embodiment of the invention, the external equipment control instruction of the external controller is generated by extracting the external equipment characteristic information contained in the task to be executed and according to the task type and the corresponding external equipment characteristic information, so that the accuracy of the control instruction is improved, the external equipment can be set according to the external equipment characteristic information for complex control operation, and the application range and the operation flexibility of the control device of the machine tool are improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 6 is a schematic structural diagram of a control device of a machine tool according to an embodiment of the present invention, and referring to fig. 6, the control device of the machine tool includes:
a state parameter acquiring unit 61, configured to acquire a state parameter of the machine tool and an attribute of a processed product;
a machine tool scheduling policy determining unit 62, configured to generate a machine tool scheduling policy according to the attribute of the processed product;
a to-be-executed task determining unit 63, configured to determine, according to the state parameter and the machine tool scheduling policy, a to-be-executed task corresponding to the state parameter;
a control instruction determining unit 64, configured to determine a control instruction of the machine tool according to the task to be executed, where the control instruction is used to control the machine tool to complete the task to be executed.
Optionally, the state parameter includes a position parameter of the product to be processed; the to-be-executed task determining unit 63 includes:
the task position determining unit is used for extracting task execution position parameters contained in the machine tool scheduling strategy;
and the machine tool movement control unit is used for controlling the product to be processed in the machine tool to move to the position corresponding to the task execution position parameter according to the position parameter of the product to be processed contained in the state parameter.
Optionally, the control instruction determining unit 64 specifically includes:
and the processing flow information sending unit is used for sending the processing flow information corresponding to the task to be executed to the machine tool, and the processing flow information is used for the machine tool to process the workpiece to be processed according to the processing flow information.
Optionally, the control device of the machine tool further includes:
the external control instruction determining unit is used for generating an external control instruction of an external controller according to the task type of the task to be executed; the external controller is used for controlling external equipment of the machine tool;
and the external control instruction sending unit is used for sending the external control instruction to the external controller.
Optionally, the external control instruction determining unit specifically includes:
the characteristic information extraction unit is used for extracting the characteristic information of the external equipment contained in the task to be executed;
and the characteristic information synthesis unit is used for generating the external control instruction of the external controller according to the task type and the external equipment characteristic information.
Therefore, the control device of the machine tool provided by the embodiment of the invention can also determine the working state of the machine tool by acquiring the state parameters of the machine tool, and generate the corresponding machine tool scheduling strategy according to the acquired attributes of the processed product, so as to obtain the task to be executed according to the state parameters of the machine tool and the machine tool scheduling strategy, and determine the corresponding machine tool control instruction according to the task to be executed, so as to control the machine tool to complete the corresponding task to be executed, thereby achieving the purpose that the machine tool executes different task operations along with the change of the task content. Compared with the existing machine tool control technology, in the embodiment of the invention, the machine tool does not repeatedly execute the same set of production operation any more, but responds to the corresponding production operation in the control instruction according to the control instruction which is generated by the control device and is related to the task to be executed, thereby realizing the purpose of carrying out production scheduling on the machine tool in real time and improving the adaptability of the machine tool. And when the task needs to be adjusted in real time, if the requirement of a certain task is suddenly increased, the user can control the machine tool to respond to the task change by adjusting the machine tool scheduling strategy, so that the task change adaptability of the machine tool is further improved.
Fig. 7 is a schematic diagram of a control device of a machine tool according to another embodiment of the present invention. As shown in fig. 7, the control device 7 of the machine tool of the embodiment includes: a processor 70, a memory 71 and a computer program 72 stored in said memory 71 and executable on said processor 70, such as a control program of a machine tool. The processor 70, when executing the computer program 72, implements the steps in the control method embodiments of the respective machine tools described above, such as S101 to S104 shown in fig. 1. Alternatively, the processor 70, when executing the computer program 72, implements the functions of the units in the above-described device embodiments, such as the functions of the units 61 to 64 shown in fig. 6.
Illustratively, the computer program 72 may be divided into one or more units, which are stored in the memory 71 and executed by the processor 70 to accomplish the present invention. The one or more units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 72 in the terminal device 7. For example, the computer program 72 may be divided into a state parameter obtaining unit, a task to be executed determining unit, and a control instruction determining unit, and the specific functions of each unit are as follows:
the state parameter acquiring unit is used for acquiring the state parameters of the machine tool and the attributes of the processed products;
the machine tool scheduling strategy determining unit is used for generating a machine tool scheduling strategy according to the attributes of the processed products;
the to-be-executed task determining unit is used for determining the to-be-executed task corresponding to the state parameter according to the state parameter and the machine tool scheduling strategy;
and the control instruction determining unit is used for determining a control instruction of the machine tool according to the task to be executed, and the control instruction is used for controlling the machine tool to complete the task to be executed.
The control device 7 of the machine tool may be a computing device such as a desktop computer, a notebook computer, a palm computer, and a cloud server. The control device of the machine tool may include, but is not limited to, a processor 70, a memory 71. It will be appreciated by those skilled in the art that fig. 7 is merely an example of a terminal device 7 and does not constitute a limitation of the terminal device 7 and may comprise more or less components than shown, or some components may be combined, or different components, for example the terminal device may further comprise input output devices, network access devices, buses, etc.
The Processor 70 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 71 may be an internal storage unit of the control device 7 of the machine tool, such as a hard disk or a memory of the control device 7 of the machine tool. The memory 71 may also be an external storage device of the terminal device 7, such as a plug-in hard disk provided on the control device 7 of the machine tool, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the memory 71 may also include both an internal storage unit and an external storage device of the control apparatus 7 of the machine tool. The memory 71 is used for storing the computer program and other programs and data required by the terminal device. The memory 71 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. . Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A control method of a machine tool, characterized by comprising:
acquiring state parameters and processing product attributes of a machine tool;
generating a machine tool scheduling strategy according to the attributes of the processed products, specifically, matching according to the acquired attributes of the processed products and a preset database, determining the machine tool scheduling strategy corresponding to the processed products, searching from the preset database according to the attributes of the processed products when the preset database has the machine tool scheduling strategy matched with the attributes of the processed products, and selecting the machine tool scheduling strategy corresponding to the attributes of the processed products; when a preset database does not have a machine tool scheduling strategy matched with the attribute of the processed product, the control device inquires machine tool scheduling strategies corresponding to other processed products in the preset database with high similarity to the attribute of the processed product, extracts a plurality of corresponding execution tasks from the preset database, and combines the execution tasks to generate the machine tool scheduling strategy of the attribute of the processed product, wherein the preset database comprises the machine tool scheduling strategies of the processed product;
determining tasks to be executed corresponding to the state parameters according to the state parameters and the machine tool scheduling strategy, wherein the machine tool scheduling strategy comprises priority information of each task to be executed, and preferentially determines the tasks to be executed with high priority;
determining a control instruction of the machine tool according to the task to be executed, wherein the control instruction is used for controlling the machine tool to complete the task to be executed; the state parameters comprise position parameters of a product to be processed and position parameters of a machine tool; the determining the task to be executed corresponding to the state parameter according to the state parameter and the machine tool scheduling policy includes:
extracting task execution position parameters contained in the machine tool scheduling strategy; controlling the product to be processed in the machine tool to move to a position corresponding to the task execution position parameter according to the position parameter of the product to be processed contained in the state parameter;
if some machine tools are in an idle state, extracting machine tool position parameters contained in the state parameters and task execution position parameters contained in a machine tool scheduling strategy, controlling the movement of the machine tools, and supporting other production tasks.
2. The control method according to claim 1, characterized in that said determining control commands of the machine tool according to the task to be executed comprises in particular:
and sending the processing flow information corresponding to the task to be executed to the machine tool, wherein the processing flow information is used for the machine tool to process the workpiece to be processed according to the processing flow information.
3. The control method according to claim 1 or 2, characterized in that the control method of the machine tool further comprises:
generating an external control instruction of an external controller according to the task type of the task to be executed; the external controller is used for controlling external equipment of the machine tool;
and sending the external control instruction to the external controller.
4. The control method according to claim 3, wherein the generating an external control instruction of an external controller according to the task to be executed specifically includes:
extracting external equipment characteristic information contained in the task to be executed;
and generating the external control instruction of the external controller according to the task type and the external equipment characteristic information.
5. A control device for a machine tool, characterized by comprising:
the state parameter acquiring unit is used for acquiring state parameters of the machine tool and attributes of the processed product, wherein the state parameters comprise position parameters of the product to be processed and position parameters of the machine tool;
a machine tool scheduling policy determining unit, configured to generate a machine tool scheduling policy according to the attribute of the processed product, specifically, match the obtained attribute of the processed product with a preset database, determine a machine tool scheduling policy corresponding to the processed product, and when there is a machine tool scheduling policy matching the attribute of the processed product in the preset database, search the preset database according to the attribute of the processed product, and select the machine tool scheduling policy corresponding to the attribute of the processed product; when a preset database does not have a machine tool scheduling strategy matched with the attribute of the processed product, the control device inquires machine tool scheduling strategies corresponding to other processed products in the preset database with high similarity to the attribute of the processed product, extracts a plurality of corresponding execution tasks from the preset database, and combines the execution tasks to generate the machine tool scheduling strategy of the attribute of the processed product, wherein the preset database comprises the machine tool scheduling strategies of the processed product;
the to-be-executed task determining unit is used for determining the to-be-executed tasks corresponding to the state parameters according to the state parameters and the machine tool scheduling strategy, wherein the machine tool scheduling strategy comprises priority information of each to-be-executed task, and the to-be-executed tasks with high priorities are determined in priority;
the control instruction determining unit is used for determining a control instruction of the machine tool according to the task to be executed, and the control instruction is used for controlling the machine tool to complete the task to be executed;
the to-be-executed task determination unit includes:
the task position determining unit is used for extracting task execution position parameters contained in the machine tool scheduling strategy;
and the machine tool movement control unit is used for controlling the product to be processed in the machine tool to move to the position corresponding to the task execution position parameter according to the position parameter of the product to be processed contained in the state parameter, wherein if some machine tools are in an idle state, the machine tool position parameter contained in the state parameter and the task execution position parameter contained in the machine tool scheduling strategy are extracted, the machine tool is controlled to move, and other production tasks are supported.
6. The control device according to claim 5, characterized in that the control device of the machine tool further comprises:
the external task instruction determining unit is used for generating an external control instruction of an external controller according to the task type of the task to be executed; the external controller is used for controlling external equipment of the machine tool;
and the external control instruction sending unit is used for sending the external control instruction to the external controller.
7. A control device for a machine tool, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the steps of the method according to any one of claims 1 to 4 are implemented when the computer program is executed by the processor.
8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
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| CN111309475B (en) * | 2020-01-21 | 2022-12-02 | 上海万物新生环保科技集团有限公司 | Detection task execution method and equipment |
| CN113177680A (en) * | 2021-03-10 | 2021-07-27 | 广州明珞自动化有限公司 | Task execution system, task execution method and production system |
| CN113325801B (en) * | 2021-05-28 | 2022-09-02 | 深圳大学 | Ultra-precision machining system, method, apparatus, and storage medium |
| CN115049652B (en) * | 2022-08-15 | 2022-11-18 | 天津帝广机电设备有限公司 | Intelligent control method, device and equipment for hydraulic machine and storage medium |
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