CN117921454A - Blade grinding method and device, numerical control machine tool and storage medium - Google Patents
Blade grinding method and device, numerical control machine tool and storage medium Download PDFInfo
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Abstract
The application relates to the technical field of blade processing, and provides a blade grinding method, a device, a numerical control machine tool and a storage medium, wherein the method comprises the following steps: acquiring feedback grinding force in real time, and judging whether the feedback grinding force accords with a preset grinding force threshold value of the current grinding stage; if not, adjusting the grinding parameters according to the grinding parameter-grinding force model corresponding to the grinding stage so as to enable the output actual grinding force to accord with the preset grinding force threshold value. According to the application, the grinding force condition of the built-in force sensor of the machine tool is obtained in real time or at intervals for a preset time, and the grinding parameters are automatically adjusted according to the obtained grinding force condition, so that the controllability of the quality of the generated blade is improved, the debugging work before grinding the blade is reduced, and the grinding efficiency is improved.
Description
Technical Field
The application relates to the technical field of blade processing, in particular to a blade grinding method, a device, a numerical control machine tool and a storage medium.
Background
The existing grinding production method of the numerical control blade adopts a peripheral grinding machine, and the aim of controlling the quality of a finished product is achieved by adjusting processing parameters such as the grinding wheel feeding rate, the grinding wheel rotation rate, the main shaft feeding rate and the like on a numerical control program, and when the hardware of a machine tool is fixed, the program parameters directly influence the finished product on the same blade. The existing blade grinding method depends on the bottom layer program of the machine tool when grinding and debugging, although different brands of machine tools have different logic architectures, when grinding and debugging, a plurality of parameters are required to be debugged for a plurality of times to achieve the ideal blade grinding edge quality, operators spend extremely long time on grinding and debugging, even exceed the time for producing a batch of blades, and are limited by different precision of different machine tools, one grinding parameter can be only suitable for one machine tool, one parameter is the same, and the machine tool is replaced for grinding, and the production cost is greatly increased.
Disclosure of Invention
In view of the above, the embodiments of the present application provide a method, an apparatus, a numerically controlled machine tool, and a storage medium for blade grinding, which can effectively improve grinding efficiency and ensure quality controllability.
In a first aspect, an embodiment of the present application provides a method for grinding a blade, including:
Acquiring feedback grinding force in real time, and judging whether the feedback grinding force accords with a preset grinding force threshold value of the current grinding stage;
if not, adjusting the grinding parameters according to the grinding parameter-grinding force model corresponding to the grinding stage so as to enable the output actual grinding force to accord with the preset grinding force threshold value.
In some embodiments, the determining whether the feedback grinding force meets a preset grinding force threshold for the current grinding stage comprises:
judging whether the obtained feedback grinding force accords with a grinding force threshold corresponding to the cutting edge quality or not through a grinding force-cutting edge quality model corresponding to the grinding stage and combining a grinding force-time model; the method specifically comprises the following steps:
Determining a grinding stage of a target blade, and determining a corresponding grinding force-cutting edge quality model according to the current grinding stage;
Obtaining a corresponding grinding force through the corresponding grinding force-cutting edge quality model according to the cutting edge quality of the target blade;
And judging whether the grinding force at the current time accords with a grinding force threshold corresponding to the quality of the cutting edge or not according to the current grinding force and the corresponding grinding force-time model.
In some embodiments, before the acquiring the feedback grinding force in real time, the method further includes:
Acquiring the specification and the material of a target blade, and searching a grinding force-cutting edge quality model, a grinding force-time model and a grinding parameter-grinding force model corresponding to the obtained specification and material;
And acquiring initial grinding parameters through the grinding force-cutting edge quality model, the grinding force-time model and the grinding parameter-grinding force model.
In some embodiments, before the obtaining the specification and the material of the target blade, the method further includes:
Grinding experiments are carried out on blades of different types of various materials, and the grinding experiments specifically comprise:
Setting a preset number of grinding parameters for each type of blade in each material at each grinding stage; wherein the grinding parameters comprise a grinding wheel rotation speed, a grinding wheel feeding speed and a blade B axis rotation speed;
when a grinding experiment is carried out according to the grinding parameters, recording a grinding force-time curve under each group of the grinding parameters, and obtaining the cutting edge quality of the blade under each group of the grinding parameters;
Comparing the quality of the cutting edge of the blade under each group of grinding parameters to obtain the optimal quality of the cutting edge of the blade with the corresponding material model;
And obtaining the grinding force-time model, the grinding force-cutting edge quality model and the grinding parameter-grinding force model of the blade with the optimal cutting edge quality corresponding to the material according to the grinding force-time curve and the grinding parameter corresponding to the optimal cutting edge quality.
In some embodiments, the edge quality is determined from an edge quality index of the blade;
The cutting edge quality index=a×cutting edge collapse dimension+b×cutting edge surface morphology;
wherein a+b=1; a is more than or equal to 0.6 and less than or equal to 0.9; b is more than or equal to 0.1 and less than or equal to 0.4.
In some embodiments, the obtaining the grinding force-time model, the grinding force-edge quality model, and the grinding parameter-grinding force model of a corresponding material corresponding model insert from the grinding force-time curve, the grinding parameter, and the edge quality comprises:
Obtaining a grinding parameter-cutting edge quality model according to the grinding parameter and the corresponding cutting edge quality;
obtaining the grinding force-time model according to the grinding force-time curve;
Obtaining a grinding parameter-grinding force model according to the grinding parameter and a force curve during grinding;
And obtaining the grinding force-cutting edge quality model according to the grinding parameter-cutting edge quality model, the grinding force-time model and the grinding parameter-grinding force model.
In some embodiments, the grinding parameter-edge quality model is: p=a1 v1+a2 v2+a3V 3;
the grinding force-time model is: f=f0+ (2 x a 1/pi) (w 1/(4 x (T-T0)/(2+w1 >) 2));
the grinding parameter-grinding force model is as follows: f= b1 v1+b2 v2+b3V 3;
the grinding force-cutting edge quality model is as follows:
Wherein P is the quality of the cutting edge; f is force; t is time; pi is the circumference ratio; a1, A2, A3, B1, B2, B3, w1, T0, F0, and P0 are all constants.
In a second aspect, an embodiment of the present application provides a blade grinding apparatus, including:
the judging module is used for acquiring the feedback grinding force in real time and judging whether the feedback grinding force accords with a preset grinding force threshold value of the current grinding stage;
And the adjusting module is used for adjusting the grinding parameters according to the grinding parameter-grinding force model corresponding to the grinding stage if the grinding parameters are not matched with the grinding force model so that the output actual grinding force meets the preset grinding force threshold value.
In a third aspect, an embodiment of the present application provides a numerically controlled machine tool, including a processor and a memory, where the memory stores a computer program, and the processor is configured to execute the computer program to implement the blade grinding method described above.
In a fourth aspect, an embodiment of the present application provides a readable storage medium storing a computer program which, when executed on a processor, implements the blade grinding method described above.
The embodiment of the application has the following beneficial effects: according to the application, the grinding force condition of the built-in force sensor of the machine tool is obtained in real time or at intervals for a preset time, and the grinding parameters are automatically adjusted according to the obtained grinding force condition, so that the controllability of the quality of the generated blade is improved, the debugging work before grinding the blade is reduced, and the grinding efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a first flow diagram of a method of blade grinding in accordance with an embodiment of the present application;
FIG. 2 shows a second flow diagram of a blade grinding method according to an embodiment of the application;
FIG. 3 shows a grinding force versus time graph of an embodiment of the application;
Fig. 4 shows a schematic structural view of a blade grinding apparatus according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application.
The terms "comprises," "comprising," "including," or any other variation thereof, are intended to cover a specific feature, number, step, operation, element, component, or combination of the foregoing, which may be used in various embodiments of the present application, and are not intended to first exclude the presence of or increase the likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the application belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in connection with the various embodiments of the application.
Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below and features of the embodiments may be combined with each other without conflict.
In the prior art, a large amount of debugging work is needed before the cutter blade is ground by adopting a numerical control machine tool, so that the time spent on grinding and debugging by operators is extremely long, and even the time for producing a batch of cutter blades is exceeded. And the precision of different machine tools is different, one grinding parameter may be only suitable for one machine tool, one parameter is the same, the machine tool is replaced for grinding, and the machine tool may need to be debugged again, so that the production cost is greatly increased.
The blade grinding method is described below in connection with some specific embodiments.
Fig. 1 shows a schematic flow chart of a blade grinding method according to an embodiment of the application. The blade grinding method illustratively comprises the steps of:
Step S100, acquiring feedback grinding force in real time, and judging whether the feedback grinding force accords with a preset grinding force threshold value of the current grinding stage.
If the feedback grinding force does not meet the preset grinding force threshold of the current grinding stage, step S200 is executed, and the grinding parameters are adjusted according to the grinding parameter-grinding force model corresponding to the grinding stage, so that the output actual grinding force meets the preset grinding force threshold.
In step S100, during the grinding process of the numerical control machine tool on the target blade, acquiring feedback grinding force in real time through a force sensor in the numerical control machine tool, judging the current grinding stage after acquiring the feedback grinding force, and judging whether the acquired grinding force meets a preset grinding force threshold value of the corresponding stage; the feedback grinding force can be obtained in real time, the feedback grinding force can be obtained sequentially at intervals of preset time, the feedback grinding force can be obtained once in a few milliseconds, the feedback grinding force can be obtained once in time in a millisecond or once in a few hundred milliseconds, the feedback grinding force is not particularly limited here, and the feedback grinding force can be set according to actual needs.
In step S100, determining whether the feedback grinding force meets the preset grinding force threshold of the current grinding stage specifically includes: and judging whether the obtained feedback grinding force accords with a grinding force threshold corresponding to the cutting edge quality or not through a grinding force-cutting edge quality model corresponding to the grinding stage and combining a grinding force-time model.
The grinding force threshold is obtained by adding or subtracting preset deviation values by taking the optimal grinding force at each stage under the optimal cutting edge quality as a standard, if the optimal grinding force is 10, the grinding force threshold can be set to 8-12, and the setting of the grinding force threshold can be set according to the needs and is not particularly limited.
Further, the determining whether the obtained feedback grinding force meets the grinding force threshold corresponding to the cutting edge quality by combining the grinding force-cutting edge quality model corresponding to the grinding stage and the grinding force-time model specifically includes: determining a grinding stage of the target blade, and determining a corresponding grinding force-cutting edge quality model according to the current grinding stage; obtaining a corresponding grinding force through the corresponding grinding force-cutting edge quality model according to the cutting edge quality of the target blade; judging whether the grinding force at the current time accords with a grinding force threshold corresponding to the quality of the cutting edge or not according to the current grinding force and a corresponding grinding force-time model.
Specifically, when judging whether the grinding force accords with the preset grinding force threshold value corresponding to the grinding stage, the grinding force threshold value is changed due to the fact that the grinding force is changed along with the change of time, the grinding force under the quality of the cutting edge can be obtained through a grinding force-cutting edge quality model, then the grinding force under specific time can be obtained through combining a grinding force-time model, then the grinding force is compared with the grinding force threshold value under the time, if the grinding force is within the grinding force threshold value range, the grinding force meets the requirements, if the grinding force is not within the grinding force threshold value range, the grinding parameters are adjusted, if the grinding force exceeds the grinding force threshold value, the feeding speed is reduced, the rotation speed is reduced, and the grinding force is adjusted by the measures of increasing the feeding speed, the rotation speed and the like.
Prior to step S100, the blade grinding method further includes:
And acquiring the specification and the material of the target blade, and searching the grinding force-cutting edge quality model, the grinding force-time model and the grinding parameter-grinding force model corresponding to the obtained specification and material.
Because each material of each specification of blade, if the quality of the cutting edge meeting the requirement is to be achieved in the grinding process, the grinding forces corresponding to the grinding time are different, and the required grinding parameters are also different, therefore, before the blade is ground, the specification and the material of the target blade are firstly obtained, the grinding force-cutting edge quality model, the grinding force-time model and the grinding parameter-grinding force model corresponding to the type of target blade are obtained from a database according to the specification and the material of the target blade, and the initial grinding parameters are obtained through the grinding force-cutting edge quality model, the grinding force-time model and the grinding parameter-grinding force model. When the initial grinding parameters are acquired, the final cutting edge quality can be determined according to the specification and the material of the target blade, the grinding force corresponding to the cutting edge quality can be obtained through a grinding force-cutting edge quality model, then the grinding force of the initial time can be obtained by combining a grinding force-time model, and then the initial grinding parameters can be obtained by combining the grinding parameter-grinding force model.
Further, as shown in fig. 2, before the obtaining the specification and the material of the target blade, the method further includes: grinding experiments are carried out on blades of different types of various materials, and the grinding experiments specifically comprise:
Step S10, setting preset number groups of grinding parameters for each type of blade in each material in each grinding stage.
Wherein, the grinding parameters comprise the rotation speed of the grinding wheel, the feeding speed of the grinding wheel and the rotating speed of the B axis of the blade.
Step S20, when grinding experiments are carried out according to the grinding parameters, recording grinding force-time curves under each group of the grinding parameters, and obtaining the quality of the cutting edge of the blade under each group of the grinding parameters;
S30, comparing the quality of the cutting edge of the blade under each group of grinding parameters to obtain the optimal quality of the cutting edge of the blade with the corresponding material model;
And S40, obtaining the grinding force-time model, the grinding force-cutting edge quality model and the grinding parameter-grinding force model of the blade with the optimal cutting edge quality corresponding to the corresponding material according to the grinding force-time curve and the grinding parameter corresponding to the optimal cutting edge quality.
Specifically, before the specification and the material of the target blade are obtained, the grinding force-time model, the grinding force-cutting edge quality model and the grinding parameter-grinding force model corresponding to the blade with the corresponding model and material are required to be obtained through grinding experiments. When the grinding experiment is carried out, firstly, the grinding step is determined according to the model and the material of the blade, if some blades comprise four sides and two arcs at the joint, during grinding, firstly, the four sides are firstly ground, and then the four arcs are ground after the four sides are ground.
Fig. 3 shows a grinding force-time curve in which the longitudinal direction represents the grinding force and the transverse direction represents the time, in which the a-stage is the edge grinding stage and the b-stage represents the arc grinding stage.
When experiments are carried out, after the grinding stage included in a certain material and model of the blade is known, a plurality of groups of grinding parameters are set for each grinding stage, then experiments are carried out sequentially according to each group of grinding parameters, grinding force-time curves (similar to the curves of fig. 3) under different schemes are recorded, after the experiments of the material and model of the blade are completed, the cutting edge quality of the blade obtained by each group of experiments is determined, wherein the cutting edge quality index=a is the cutting edge breakage size+b is the cutting edge surface morphology; wherein a+b=1; a is more than or equal to 0.6 and less than or equal to 0.9; b is more than or equal to 0.1 and less than or equal to 0.4, wherein the edge collapse size is the maximum collapse size of a single blade, the maximum collapse size can be obtained through measurement, and the edge surface morphology can be obtained by dividing the grade according to the established edge surface morphology evaluation standard and assigning values according to the grade. After the cutting edge quality index under each group of parameters is calculated, the optimal cutting edge quality can be obtained, and the lower the cutting edge quality index value is, the better the cutting edge quality of the blade is. According to the optimal cutting edge quality, grinding parameters and grinding force-time curves of all grinding stages under the optimal cutting edge quality can be obtained, the grinding parameters and the grinding force-time curves under all the grinding stages are connected, and a grinding force-time model, a grinding force-cutting edge quality model and the grinding parameter-grinding force model are constructed through MATLAB or Origin analysis software. The experimental method can be used for storing grinding force-time models, grinding force-cutting edge quality models and grinding parameter-grinding force models of various materials and various models under the optimal cutting edge quality.
Constructing a grinding force-time model, a grinding force-cutting edge quality model and the grinding parameter-grinding force model by MATLAB or Origin analysis software specifically comprises:
Obtaining a grinding parameter-cutting edge quality model according to the grinding parameter and the corresponding cutting edge quality; obtaining the grinding force-time model according to the grinding force-time curve; obtaining a grinding parameter-grinding force model according to the grinding parameter and a force curve during grinding; and obtaining the grinding force-cutting edge quality model according to the grinding parameter-cutting edge quality model, the grinding force-time model and the grinding parameter-grinding force model.
Wherein, the grinding parameter-cutting edge quality model is: p=a1 v1+a2 v2+a3V 3.
The grinding force-time model is: f=f0+ (2×a 1/pi) (w 1/(4×t-T0)/(2+w1≡2)).
The grinding parameter-grinding force model is as follows: f=b1 v1+b2 v2+b3V 3.
The grinding force-cutting edge quality model is as follows:
Wherein P is the quality of the cutting edge; f is force; t is time; pi is the circumference ratio; a1, A2, A3, B1, B2, B3, w1, T0, F0 and P0 are all constants, and the constants of A1, A2, A3, B1, B2, B3, w1, T0, F0 and P0 can be obtained according to actual tests, and can be specifically adjusted according to actual requirements.
According to the application, the grinding force condition of the built-in force sensor of the machine tool is obtained in real time or at intervals for a preset time, and the grinding parameters are automatically adjusted according to the obtained grinding force condition, so that the controllability of the quality of the generated blade is improved, the debugging work before grinding the blade is reduced, the grinding efficiency is improved, in addition, the abrasion of the grinding wheel is greatly reduced due to the reduction of the debugging work, the abrasion during tool setting is reduced, and the cost is reduced.
Fig. 4 shows a schematic structural view of a blade grinding apparatus according to an embodiment of the present application. Illustratively, the blade grinding apparatus includes:
The judging module 100 is configured to obtain the feedback grinding force in real time, and judge whether the feedback grinding force meets a preset grinding force threshold of the current grinding stage.
And the adjusting module 200 is configured to adjust the grinding parameters according to the grinding parameter-grinding force model corresponding to the grinding stage if the grinding parameters are not matched, so that the output actual grinding force meets the preset grinding force threshold.
It will be appreciated that the apparatus of this embodiment corresponds to the blade grinding method of the above embodiment, and that the alternatives of the above embodiment are equally applicable to this embodiment, so that the description thereof will not be repeated here.
The present application also provides a numerical control machine, which exemplarily includes a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program, so that the numerical control machine performs the functions of the above-mentioned blade grinding method or each module in the above-mentioned blade grinding device.
The processor may be an integrated circuit chip with signal processing capabilities. The processor may be a general purpose processor including at least one of a central processing unit (Central Processing Unit, CPU), a graphics processor (Graphics Processing Unit, GPU) and a network processor (Network Processor, NP), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application.
The Memory may be, but is not limited to, random access Memory (Random Access Memory, RAM), read Only Memory (ROM), programmable Read Only Memory (Programmable Read-Only Memory, PROM), erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc. The memory is used for storing a computer program, and the processor can correspondingly execute the computer program after receiving the execution instruction.
The application also provides a readable storage medium for storing the computer program used in the numerical control machine tool.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, of the flow diagrams and block diagrams in the figures, which illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules or units in various embodiments of the application may be integrated together to form a single part, or the modules may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a smart phone, a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application.
Claims (10)
1. A method of grinding a blade, comprising:
Acquiring feedback grinding force in real time, and judging whether the feedback grinding force accords with a preset grinding force threshold value of the current grinding stage;
if not, adjusting the grinding parameters according to the grinding parameter-grinding force model corresponding to the grinding stage so as to enable the output actual grinding force to accord with the preset grinding force threshold value.
2. The method of claim 1, wherein said determining whether the feedback grinding force meets a preset grinding force threshold for a current grinding stage comprises:
judging whether the obtained feedback grinding force accords with a grinding force threshold corresponding to the cutting edge quality or not through a grinding force-cutting edge quality model corresponding to the grinding stage and combining a grinding force-time model; the method specifically comprises the following steps:
Determining a grinding stage of a target blade, and determining a corresponding grinding force-cutting edge quality model according to the current grinding stage;
Obtaining a corresponding grinding force through the corresponding grinding force-cutting edge quality model according to the cutting edge quality of the target blade;
And judging whether the grinding force at the current time accords with a grinding force threshold corresponding to the quality of the cutting edge or not according to the current grinding force and the corresponding grinding force-time model.
3. The method of blade grinding according to claim 1, further comprising, prior to said acquiring the feedback grinding force in real time:
Acquiring the specification and the material of a target blade, and searching a grinding force-cutting edge quality model, a grinding force-time model and a grinding parameter-grinding force model corresponding to the obtained specification and material;
And acquiring initial grinding parameters through the grinding force-cutting edge quality model, the grinding force-time model and the grinding parameter-grinding force model.
4. The method of claim 3, further comprising, prior to obtaining the target blade specification and material:
Grinding experiments are carried out on blades of different types of various materials, and the grinding experiments specifically comprise:
Setting a preset number of grinding parameters for each type of blade in each material at each grinding stage; wherein the grinding parameters comprise a grinding wheel rotation speed, a grinding wheel feeding speed and a blade B axis rotation speed;
when a grinding experiment is carried out according to the grinding parameters, recording a grinding force-time curve under each group of the grinding parameters, and obtaining the cutting edge quality of the blade under each group of the grinding parameters;
Comparing the quality of the cutting edge of the blade under each group of grinding parameters to obtain the optimal quality of the cutting edge of the blade with the corresponding material model;
And obtaining the grinding force-time model, the grinding force-cutting edge quality model and the grinding parameter-grinding force model of the blade with the optimal cutting edge quality corresponding to the material according to the grinding force-time curve and the grinding parameter corresponding to the optimal cutting edge quality.
5. The blade grinding method according to claim 4, wherein the edge quality is determined based on an edge quality index of the blade;
The cutting edge quality index=a×cutting edge collapse dimension+b×cutting edge surface morphology;
wherein a+b=1; a is more than or equal to 0.6 and less than or equal to 0.9; b is more than or equal to 0.1 and less than or equal to 0.4.
6. The method of claim 5, wherein the obtaining the grinding force-time model, the grinding force-edge quality model, and the grinding parameter-grinding force model of the corresponding-material-corresponding-model insert according to the grinding force-time curve, the grinding parameter, and the edge quality comprises:
Obtaining a grinding parameter-cutting edge quality model according to the grinding parameter and the corresponding cutting edge quality;
obtaining the grinding force-time model according to the grinding force-time curve;
Obtaining a grinding parameter-grinding force model according to the grinding parameter and a force curve during grinding;
And obtaining the grinding force-cutting edge quality model according to the grinding parameter-cutting edge quality model, the grinding force-time model and the grinding parameter-grinding force model.
7. The blade grinding method according to claim 6, characterized in that,
The grinding parameter-cutting edge quality model is as follows: p=a1 v1+a2 v2+a3V 3;
the grinding force-time model is: f=f0+ (2 x a 1/pi) (w 1/(4 x (T-T0)/(2+w1 >) 2));
the grinding parameter-grinding force model is as follows: f= b1 v1+b2 v2+b3V 3;
the grinding force-cutting edge quality model is as follows:
Wherein P is the quality of the cutting edge; f is force; t is time; pi is the circumference ratio; a1, A2, A3, B1, B2, B3, w1, T0, F0, and P0 are all constants.
8. A blade grinding apparatus, comprising:
the judging module is used for acquiring the feedback grinding force in real time and judging whether the feedback grinding force accords with a preset grinding force threshold value of the current grinding stage;
And the adjusting module is used for adjusting the grinding parameters according to the grinding parameter-grinding force model corresponding to the grinding stage if the grinding parameters are not matched with the grinding force model so that the output actual grinding force meets the preset grinding force threshold value.
9. A numerically controlled machine tool, characterized in that it comprises a processor and a memory, the memory storing a computer program, the processor being adapted to execute the computer program to carry out the blade grinding method according to any one of claims 1-7.
10. A readable storage medium, characterized in that it stores a computer program which, when executed on a processor, implements the blade grinding method according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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