CN113741352A - Numerical control adaptive control processing method, system, equipment and storage medium thereof - Google Patents
Numerical control adaptive control processing method, system, equipment and storage medium thereof Download PDFInfo
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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
- G05B19/414—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
- G05B19/4147—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller characterised by using a programmable interface controller [PIC]
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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
- G05B2219/33—Director till display
- G05B2219/33123—Identify kind of transducer, encoder used
Abstract
The invention provides a numerical control adaptive control processing method, a system, equipment and a storage medium thereof, which can realize simple adaptive control processing function by utilizing the load monitoring function of a machine tool and utilizing a PLC reediting technology without adding any software and hardware, so that enterprises can apply the simplified adaptive control processing technology with low cost, namely the simplified constraint adaptive control processing technology, can realize that the cutting feed changes in real time along with the change of the cutting load by the mode, only a plurality of main shaft load range values required to be controlled and an M instruction for controlling the make-and-break of a PMC subprogram P0800 are required to be added in a numerical control processing program, so that the program has the adaptive control processing function, the flexibility is higher, the numerical control processing program is less in programming difficulty, the PMC program can be copied, and one machine tool can be modified and completed only half an hour under the common condition, and any software and hardware are not required to be added, and the FANUC numerical control systems of different versions can be universal.
Description
Technical Field
The invention relates to the technical field of numerical control systems, in particular to a numerical control adaptive control processing method, a numerical control adaptive control processing system, numerical control adaptive control processing equipment and a storage medium thereof.
Background
In the numerical control machining process, the machining allowance is not uniform regardless of rough machining or finish machining, and if the cutting force is greatly varied at a uniform feed speed, chattering occurs at abrupt changes in the machining allowance, which is disadvantageous in terms of machining accuracy and tool protection. If the feed rate is controlled so that the cutting force is maintained around a constant value by detecting the change in the cutting force, this is an improvement in machining accuracy, machine stability, or machining efficiency.
Adaptive techniques are a simulation of a living being changing its behavior to adapt to the environment. The self-adaptive control technology is applied to the cutting process, so that the machine tool can adjust cutting parameters in real time according to the machining condition, namely the change of cutting force, the machining efficiency of the machine tool is improved as much as possible under the condition of ensuring the stable and normal operation of a system and certain machining quality, and meanwhile, the self-adaptive control technology plays a role in protecting the safety of cutters, the machine tool, personnel and the like.
The existing numerical control machine tool has a real-time load percentage (or power) display function, the load monitoring function of the machine tool, the PMC function block SUB51 and the decimal number 153 are utilized to extract the load percentage of the main shaft of the machine tool, the main shaft is judged and range value is controlled in the PMC, the judgment result is fed back to the cutting parameters of the machine tool in time, the cutting parameters are changed along with the change of the load, so that the main shaft of the machine tool can change the cutting parameters in real time according to the actual cutting working condition, the load of the main shaft is controlled in a certain range, the main shaft load is not too large to damage the machine tool, is not too small, the cutting efficiency is lower, and the utilization rate and the cutting efficiency of the machine tool can be improved to the maximum extent.
The self-adaptive control technology is mainly divided into two types, one is constraint self-adaptive control, which mainly monitors the cutting force in the processing process, performs online control on cutting parameters such as feed speed and the like according to the change of the cutting force, adjusts the cutting parameters under the limitation of constraint conditions, and avoids the damage of cutters, equipment and the like caused by over-small or maximized cutting consumption; and secondly, optimization type self-adaptive control is performed, an evaluation function is listed on the basis of constraint type, and different objective functions are set according to optimization requirements, so that multi-objective cutting parameter optimization is realized, and the optimization is complex and large in calculation amount.
A lot of experiments are carried out in schools by part of colleges, a lot of research results are also made, but at present, a lot of applications are not obtained in practical production of production type enterprises, mature adaptive control processing systems and technologies are not available, ACM adaptive control systems of the Israel OMATIVE company are sold in most markets, but the system needs about 30 ten thousand yuan, a plurality of machine tools cannot be shared, the cost is high, and the system is not suitable for large-scale application.
Disclosure of Invention
Aiming at the problems of uneven machining allowance and the like in the numerical control machining process in the prior art, the invention provides a numerical control adaptive control machining method, a system, equipment and a storage medium thereof, which can use the torque monitoring function of a machine tool to realize the adaptive control machining function, reduce the programming quantity of a numerical control machining program, have higher flexibility, small programming difficulty of the numerical control machining program, do not need to add any software and hardware, have good universality and low cost, and can effectively improve the utilization rate of the machine tool and the cutting efficiency.
The invention is realized by the following technical scheme:
a numerical control adaptive control processing method comprises the following steps:
carrying out self-adaptive control on the PLC program section of the functional machine tool in the numerical control machining program section;
extracting the load value of the main shaft of the machine tool in the PLC program section of the machine tool;
inputting and assigning macro variables for controlling the main shaft load range;
comparing the extracted load value of the machine tool spindle with the macrovariable value of the input control spindle load range, and calculating and changing the cutting feed multiplying power according to the judgment result;
shielding the multiplying power knob function of the operation panel in the PLC program section of the machine tool;
and writing the calculated and changed cutting feed multiplying power into a multiplying power storage address to realize real-time change of actual cutting feed.
Preferably, the adaptive control function is performed by compiling codes in the machine tool PLC program segment to control the on and off of the machine tool PLC program segment.
Preferably, a p0800 subprogram is added to the PLC program section of the machine tool, and the spindle load range and the real-time spindle load value of the machine tool added to the numerical control program are read through a PLC window function.
Preferably, the extracted load value of the machine tool spindle and the macrovariable value of the input control spindle load range are judged; the macro variable sets a load percentage molecular value comprising a minimum value, a small critical value, a large critical value and a maximum value, and the PLC program segment is read and then compared with a load value of a main shaft of the machine tool.
Further, the specific comparison method is as follows:
when the load value of the machine tool is smaller than the minimum value, alarming and prompting;
when the minimum value is smaller than the machine tool load value and the machine tool load value is smaller than a smaller critical value, the multiplying power of the main shaft is increased, namely the cutting feed is increased;
when the smaller critical value is smaller than the machine tool load value and the machine tool load value is smaller than the larger critical value, keeping the multiplying power of the current spindle unchanged, namely, the cutting feed is unchanged;
when the larger critical value is smaller than the machine tool load value and the machine tool load value is smaller than the maximum value, the multiplying power of the main shaft is reduced, namely the cutting feed is reduced;
and when the maximum value is smaller than the machine tool load value, giving an alarm for prompting.
A numerically controlled adaptive control machining system, comprising:
the control module is used for carrying out self-adaptive control on the on-off control of the PLC program section of the functional machine tool in the numerical control machining program section;
the information extraction module is used for extracting the load value of the main shaft of the machine tool in the PLC program section of the machine tool;
the input module is used for inputting and assigning macro variables for controlling the main shaft load range;
the comparison module is used for comparing the extracted load value of the machine tool spindle with the macrovariable value of the input control spindle load range and calculating and changing the cutting feed multiplying power according to the comparison result;
the shielding module is used for shielding the multiplying power knob function of the operation panel in the PLC program section of the machine tool;
and the storage module is used for writing the calculated and changed cutting feed multiplying power into a multiplying power storage address to realize real-time change of actual cutting feed.
A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the numerical control adaptive control machining method as described above when executing the computer program.
A computer-readable storage medium, storing a computer program which, when executed by a processor, implements the steps of the numerical control adaptive control machining method as described above.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a numerical control adaptive control processing method, which can realize simple adaptive control processing function by utilizing the load monitoring function of a machine tool and utilizing a PLC reediting technology without adding any software and hardware, so that enterprises can apply the simplified adaptive control processing technology with low cost, namely the simplified constraint adaptive control processing technology, by the mode, the cutting feed can be changed in real time along with the change of the cutting load, only a plurality of spindle load range values required to be controlled and an M instruction for controlling the on-off of a PMC subprogram P0800 are required to be added in a numerical control processing program, then the program has the adaptive control processing function, the flexibility is higher, the difficulty in programming the numerical control processing program is small, the PMC program can be copied, one machine tool can be modified and completed in half an hour under the normal condition without adding any software and hardware, the FANUC numerical control systems of different versions can be universal, and meanwhile, the FANUC numerical control systems are not limited to machine tool types, such as a numerical control lathe and a machining center, and the FANUC numerical control system is good in universality, low in cost and simple in modification; by applying the self-adaptive function, the utilization rate of the machine tool and the cutting efficiency are improved by 20 percent, the service life of the cutter is prolonged by 10 percent, and the self-adaptive function is significant.
Drawings
Fig. 1 is a flow chart of a numerical control adaptive control processing method according to the present invention.
FIG. 2 is a schematic diagram of controlling the on/off of an adaptive function PLC program through compiled codes in the embodiment of the present invention;
FIG. 3 is a diagram illustrating writing of a "WINDR" instruction and a "WINDW" instruction according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating the functional setup of the PMC window function to read or write CNC data according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of storing decimal number 153 in D1200 register and reading spindle load according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating the operation of the PLC program for storing the values of the machine tool parameters 4127 for calculating the spindle load in the register D2710 according to the embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating the operation of calculating the spindle load percentage value actually used for judgment according to the calculation formula and storing the calculated spindle load percentage value in the register D1230 according to the embodiment of the present invention
FIG. 8 is a schematic diagram illustrating the operation of reading the set value of the spindle load range macro variable #102 (larger threshold) and storing the value in the register D2210 according to the embodiment of the present invention;
fig. 9 is a schematic diagram of the real-time change operation of cutting feed realized by comparing the value of the macro variable of the spindle load range with the value of the set macro variable, calculating and changing the corresponding cutting feed multiplying power, and storing the latest multiplying power value in a register G12 (fvralate);
fig. 10 is a schematic diagram of the operation of the PLC program for shielding the feed magnification knob function of the machine tool operation panel according to the embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the invention provides a numerical control adaptive control processing method, which has the advantages of higher flexibility, small difficulty in programming numerical control processing programs, no need of adding any software or hardware, good universality and low cost by adaptive control processing, and can effectively improve the utilization rate and cutting efficiency of a machine tool.
Specifically, the numerical control adaptive control processing method comprises the following steps:
s1, performing adaptive control on the PLC program segment of the functional machine tool in the numerical control machining program segment;
s2, extracting the load value of the main shaft of the machine tool in the PLC program section of the machine tool;
s3, inputting and assigning macro variables for controlling the main shaft load range;
s4, comparing the extracted load value of the machine tool spindle with the macrovariable value of the input control spindle load range, and calculating and changing the cutting feed multiplying power according to the comparison result;
s5, shielding the multiplying power knob function of the operation panel in the PLC program section of the machine tool;
and S6, writing the calculated and changed cutting feed multiplying power into a multiplying power storage address, and realizing real-time change of the actual cutting feed.
Specifically, the on-off control of the machine tool PLC program segment is realized by compiling codes in the machine tool PLC program segment to carry out self-adaptive control.
Specifically, a p0800 subprogram is added to the PLC program section of the machine tool, and the spindle load range and the real-time spindle load value of the machine tool added to the numerical control program are read through a PMC window function.
Specifically, the extracted load value of the machine tool spindle and the macrovariable value of the input control spindle load range are judged; the macro variable sets a load percentage molecular value which comprises a minimum value, a small critical value, a large critical value and a maximum value, and the PMC program section is read and then compared.
The specific comparison and judgment mode is as follows:
when the load value of the machine tool is smaller than the minimum value, alarming and prompting;
when the minimum value is smaller than the machine tool load value and the machine tool load value is smaller than a smaller critical value, the multiplying power of the main shaft is increased, namely the cutting feed is increased;
when the smaller critical value is smaller than the machine tool load value and the machine tool load value is smaller than the larger critical value, keeping the multiplying power of the current spindle unchanged, namely, the cutting feed is unchanged;
when the larger critical value is smaller than the machine tool load value and the machine tool load value is smaller than the maximum value, the multiplying power of the main shaft is reduced, namely the cutting feed is reduced;
and when the maximum value is smaller than the machine tool load value, giving an alarm for prompting.
Examples
According to the illustration in fig. 2, two M codes are compiled for controlling whether the adaptive machining program module runs, and M302 is compiled for opening the adaptive control PMC program and M303 is compiled for closing the adaptive control PMC program;
and adding a P0800 subprogram, reading a main shaft load range value macro variable and a machine tool real-time main shaft load value added in the numerical control program by utilizing a FANUC system PMC window function, realizing machine tool power extraction, performing data judgment and logic processing, and supporting self-adaptive function operation.
The FANUC system PMC window function can read or write CNC data (such as parameters, variables, system servo information, etc.), wherein a "WINDR" instruction is used for reading related data in the CNC, a "WINDW" instruction is used for writing related data in the CNC, and the instruction format is shown in fig. 3 and fig. 4;
the "control data address" in the read-write window instruction is an independent data segment address, only the first address of the control data address needs to be written in the functional instruction, and the specific address number is defined as follows:
a "function code" item of a control data address, which indicates different window operation functions, such as "153" for the "function code" of reading spindle load information; the "function code" of the user macro variable is read as "21". The window function instruction is divided into a high-speed processing window instruction and a low-speed processing window instruction, wherein the high-speed processing window instruction can complete processing within one scanning period, and the low-speed processing window instruction can complete processing within more than 2 scanning periods. Therefore, after the execution of the low-speed processing window instruction is completed, the enabling of the window instruction needs to be disconnected.
Reading the main shaft load information and calculating the main shaft load percentage
Spindle load information is read through a PMC window reading function SUB51 "WINDR" instruction, a "function code" is "153", the data length is 2 bytes, 153 is transferred to a D1200 register, and the read spindle load information is stored in a D1210 register. The specific program operation is shown in fig. 5:
the main shaft load information percentage calculation formula is as follows:
Load(％)＝L32767×λ
wherein, L is the value read in the window, namely the value read in D1200, the value read will be stored in D1210 automatically; λ is the percentage of the maximum output of the motor relative to the rated output of the motor (the value of λ is in parameter 4127).
The parameter value of 4127 is read by the PMC window read function SUB51 "WINDR" function, the function code is "17", the data length is 2 bytes, 17 is transferred to the D2700 register, the parameter number 4127 is transferred to D2706, the result value of reading the 4127 parameter is automatically stored in the D2710 register, as shown in fig. 6.
The load percentage value is calculated according to the load formula, since the macro variable value is set as the numerator of the load percentage when the comparison is performed in the subsequent load logic, but the macro variable value needs to be set as a decimal number at least when being read, namely, the read result is enlarged by 10 times, for the convenience of processing, the numerator value is about L3277 times λ when the read result is calculated as L32767 times λ/10, and the result is stored in D1230, as shown in fig. 7: after the calculation of the program is finished, the calculation result for the load comparison value is stored in a register D1230 for subsequent judgment value judgment.
Setting a load percentage molecular value by the macro variable, and comparing and judging after reading by the PMC;
the load percentage value is set by the macro variable and includes 4 values, minimum, smaller threshold, larger threshold, maximum. 5 comparisons are needed according to the sequential comparison:
a) load value < minimum: alarm prompt
b) Minimum value < load value < smaller critical value: increasing spindle magnification, i.e. increase in cutting feed
c) Smaller threshold < load value < larger threshold: keeping the current main shaft multiplying power unchanged, i.e. the cutting feed unchanged
d) Large threshold < load value < maximum: reducing spindle magnification, i.e. cutting feed reduction
e) Maximum value < load value: alarm prompt
When the window instruction is used to read the value of the macro variable, the function code is "21", the macro variable number is transferred to the first 2 bytes of the 6 th byte, for example, the value in #102 (larger critical value) is read, 21 is transferred to D2200, 102 is transferred to D2206, and the value read to the macro variable is stored in D2210, as shown in fig. 8.
And reading the minimum value, the small critical value, the large critical value, the maximum value macro variable, the percentage of change of the feed magnification each time and the set primary feed magnification percentage macro variable in sequence through the PMC program segment.
The PMC comparison function SUB32 COMPB is used to compare the load value with the set value, such as: if the load value is smaller than the maximum value D2310 (maximum load), setting R9000.1 as 1, switching on the starting point E300.3 as 1, namely executing a multiplying power value self-adding program section in the PMC (multiplying power value is reduced when the multiplying power value is actually fed back to the CNC of the machine tool), and then continuing to execute subsequent programs; if the load value is larger than the maximum value D2310, R9000.1 is set to be 0, the opening point E300.3 is connected to be 0, the closing point E300.3 is 1, namely the alarm A100.2 is connected, and the machine tool can display alarm information. Other numerical comparisons and so on. Increasing the multiplying factor value by a certain value, wherein the certain value is stored in D2410 (a value that the actual multiplying factor value is increased or decreased each time according to the load of the spindle), D3510 is the current chip multiplying factor value, D3710 is the calculated chip multiplying factor value, after comparing with the maximum upper limit value acceptable by the machine tool, the final value of the comparison is given to D2610, since all the values are enlarged by 10 times, D2610 needs to be divided by 10, and then D3810 is transmitted to G12 (the multiplying factor address used by the CNC of the machine tool), as shown in fig. 9;
the manual knob of the feed multiplying power of the operation panel of the shielding machine tool realizes the self-adaptive control processing
When the adaptive control machining function is started, the G12 value of the manual knob of the machine tool operation panel is shielded through an E0.0 normally closed point, namely, the cutting feed multiplying power can be intelligently controlled only through a PMC program in the machining process, and the cutting multiplying power cannot be manually changed through the multiplying power knob of the machine tool operation panel, as shown in FIG. 10.
Compiling a numerical control machining program capable of using a self-adaptive function;
n1#100 ═ 1; setting a lower limit of a molecular value of a spindle load white-component ratio, and alarming when the lower limit is smaller than the lower limit;
n2#101 ═ 3; setting the lower limit of the normal chip spindle load white ratio molecular value, which is smaller than the feed increase;
n3#102 ═ 5; setting the upper limit of the molecular value of the load white fraction ratio of the normal cutting spindle, wherein the upper limit is smaller than the feeding of the normal cutting spindle and is unchanged;
n4#103 ═ 7; setting the upper limit of the molecular value of the spindle load white ratio, wherein the upper limit is smaller than the feeding reduction and larger than the alarm;
n5#104 ═ 5; setting the percentage of change of the feeding multiplying power each time;
n6#105 ═ 155; setting an initial feeding multiplying power, wherein 155 percent of corresponding cutting multiplying power in FANUC is 100 percent;
N7M 300; starting a self-adaptive function, and running a corresponding PMC program all the time;
……
……
……
m301; disconnecting the self-adaptive function and disconnecting the corresponding PMC program;
……
……
by changing the original PMC program of the machine tool and adding a plurality of macro variables and M instructions to the original NC (numerical control machining) program, when the self-adaptive control function is started, the feeding multiplying power after the judgment and calculation of the main shaft load can be fed back to each servo shaft (each direction feeding shaft) of the machine tool in real time, so that the feeding speed is changed in real time, the self-adaptive control of the cutting machining process can be realized, the method is simple, convenient, reliable, high in universality and controllable in on-off, namely when the method is not used, the M instructions are only used for controlling the machine tool to be switched off, and the original functions of the machine tool are not influenced.
In summary, the present invention provides a numerical control adaptive control machining method, which utilizes the machine tool spindle load white ratio monitoring function of the machine tool itself, utilizes the PLC reediting technology, and can realize a simple adaptive control machining function without adding any software or hardware, so that an enterprise can apply a simplified adaptive control machining technology with low cost, that is, a simplified constraint adaptive control machining technology, by which the cutting feed can be changed in real time with the change of the cutting load, and only a few spindle load range values to be controlled and an M instruction for controlling the on-off of the PMC subprogram P0800 need to be added in the numerical control machining program, so that the program has an adaptive control machining function, and has high flexibility, small difficulty in programming the numerical control machining program, and the PMC program can be copied, and normally only half an hour is needed to modify and complete one machine tool, the FANUC numerical control systems of different versions can be universal without adding any software and hardware, and are not limited to the types of machine tools, such as a numerical control lathe and a machining center, so that the numerical control machine tool is good in universality, low in cost and simple in modification; by applying the self-adaptive function, the utilization rate of the machine tool and the cutting efficiency are improved by 20 percent, the service life of the cutter is prolonged by 10 percent, and the self-adaptive function is significant.
The following are embodiments of the apparatus of the present invention that may be used to perform embodiments of the method of the present invention. For details not disclosed in the device embodiments, reference is made to the method embodiments of the invention.
The invention provides a numerical control adaptive control processing system in one embodiment, which is used for realizing the numerical control adaptive control processing method,
specifically, the numerical control adaptive control processing system includes:
the control module is used for carrying out self-adaptive control on the on-off control of the PLC program section of the functional machine tool in the numerical control machining program section; the information extraction module is used for extracting the load value of the main shaft of the machine tool in the PLC program section of the machine tool; the input module is used for inputting and assigning macro variables for controlling the main shaft load range; the comparison module is used for comparing the extracted machine tool load value with a macrovariable value input into a control spindle load range and calculating and changing the cutting feed multiplying power according to a judgment result; the shielding module is used for shielding the multiplying power knob function of the operation panel in the PLC program section of the machine tool; and the storage module is used for writing the calculated and changed cutting feed multiplying power into a multiplying power storage address to realize real-time change of actual cutting feed.
In yet another embodiment of the present invention, a computer device is provided, comprising a memory for storing a computer program, a processor, and a computer program stored in the memory and executable on the processor, the computer program comprising program instructions, the processor for executing the program instructions stored by the computer storage medium. The Processor may be a Central Processing Unit (CPU), or may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable gate array (FPGA) or other Programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., which is a computing core and a control core of the terminal, and is adapted to implement one or more instructions, and is specifically adapted to load and execute one or more instructions to implement a corresponding method flow or a corresponding function; the processor provided by the embodiment of the invention can be used for the operation of the numerical control adaptive control machining method.
In yet another embodiment of the present invention, the present invention further provides a storage medium, specifically a computer-readable storage medium (Memory), which is a Memory device in a computer device and is used for storing programs and data. It is understood that the computer readable storage medium herein can include both built-in storage media in the computer device and, of course, extended storage media supported by the computer device. The computer-readable storage medium provides a storage space storing an operating system of the terminal. Also, one or more instructions, which may be one or more computer programs (including program code), are stored in the memory space and are adapted to be loaded and executed by the processor. It should be noted that the computer-readable storage medium may be a high-speed RAM memory, or may be an unstable memory (non-volatile memory), such as at least one disk memory. One or more instructions stored in the computer-readable storage medium may be loaded and executed by the processor to implement the corresponding steps of the numerical control adaptive control processing method in the above-described embodiments.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (8)
1. A numerical control adaptive control processing method is characterized by comprising the following steps:
carrying out self-adaptive control on the PLC program section of the functional machine tool in the numerical control machining program section;
extracting the load value of the main shaft of the machine tool in the PLC program section of the machine tool;
inputting and assigning macro variables for controlling the main shaft load range;
comparing the extracted load value of the machine tool spindle with the macrovariable value of the input control spindle load range, and calculating and changing the cutting feed multiplying power according to the judgment result;
shielding the multiplying power knob function of the operation panel in the PLC program section of the machine tool;
and writing the calculated and changed cutting feed multiplying power into a multiplying power storage address to realize real-time change of actual cutting feed.
2. The method of claim 1, wherein the adaptive control of the on/off state of the PLC section of the machine tool is performed by compiling code in the PLC section of the machine tool.
3. The numerical control adaptive control machining method according to claim 1, wherein a p0800 subprogram is added to the PLC program section of the machine tool, and a spindle load range and a real-time spindle load value of the machine tool added to the numerical control program are read by a PLC window function.
4. The numerical control adaptive control machining method according to claim 1, wherein the extracted machine tool spindle load value and a macrovariable value of an input control spindle load range are judged; the macro variable sets a load percentage molecular value comprising a minimum value, a small critical value, a large critical value and a maximum value, and the PLC program segment is read and then compared with a load value of a main shaft of the machine tool.
5. The numerical control adaptive control processing method according to claim 4, characterized by specifically comparing as follows:
when the load value of the machine tool is smaller than the minimum value, alarming and prompting;
when the minimum value is smaller than the machine tool load value and the machine tool load value is smaller than a smaller critical value, the multiplying power of the main shaft is increased, namely the cutting feed is increased;
when the smaller critical value is smaller than the machine tool load value and the machine tool load value is smaller than the larger critical value, keeping the multiplying power of the current spindle unchanged, namely, the cutting feed is unchanged;
when the larger critical value is smaller than the machine tool load value and the machine tool load value is smaller than the maximum value, the multiplying power of the main shaft is reduced, namely the cutting feed is reduced;
and when the maximum value is smaller than the machine tool load value, giving an alarm for prompting.
6. A numerically controlled adaptive control machining system, comprising:
the control module is used for carrying out self-adaptive control on the on-off control of the PLC program section of the functional machine tool in the numerical control machining program section;
the information extraction module is used for extracting the load value of the main shaft of the machine tool in the PLC program section of the machine tool;
the input module is used for inputting and assigning macro variables for controlling the main shaft load range;
the comparison module is used for comparing the extracted load value of the machine tool spindle with the macrovariable value of the input control spindle load range and calculating and changing the cutting feed multiplying power according to the comparison result;
the shielding module is used for shielding the multiplying power knob function of the operation panel in the PLC program section of the machine tool;
and the storage module is used for writing the calculated and changed cutting feed multiplying power into a multiplying power storage address to realize real-time change of actual cutting feed.
7. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor when executing the computer program implements the steps of the numerical control adaptive control machining method according to any one of claims 1 to 5.
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 numerically controlled adaptive control processing method according to any one of claims 1 to 5.
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