CN114559106B - Adjustable plate corner cutting device and corner cutting method for furniture production - Google Patents

Adjustable plate corner cutting device and corner cutting method for furniture production Download PDF

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CN114559106B
CN114559106B CN202210190837.1A CN202210190837A CN114559106B CN 114559106 B CN114559106 B CN 114559106B CN 202210190837 A CN202210190837 A CN 202210190837A CN 114559106 B CN114559106 B CN 114559106B
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blade
cutting
rotating speed
sequence
state evaluation
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CN114559106A (en
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张美英
李别军
张威
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Lejie Household Co ltd
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Lejie Household Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
    • B23Q17/0985—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining by measuring temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/18—Manufacture or reconditioning of specific semi-finished or finished articles of furniture or of doors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Automatic Control Of Machine Tools (AREA)

Abstract

The invention relates to the technical field of engineering machinery, in particular to an adjustable plate corner cutting device for furniture production and a corner cutting method thereof. The method collects cutting data in the cutting process, and obtains a blade state evaluation sequence of a blade in the cutting process according to sound data and temperature data. And grouping the blade rotating speeds according to the difference distances of the blade state evaluation sequences among different blade rotating speeds, and taking the rotating speed group with the maximum rotating speed as an analysis rotating speed group. And selecting an analysis rotating speed from the analysis rotating speed group, and obtaining the cutting adaptation degree of the blade and the plate according to a cutting depth sequence corresponding to the analysis rotating speed. And obtaining the adaptive blades of all materials according to the cutting adaptation degree, and selecting the corresponding adaptive blades for cutting according to the material of the plate to be cut. According to the invention, through analysis of the cutting data, the adaptive blade corresponding to each material is obtained, and targeted cutting is carried out according to the adaptive blade, so that the efficiency of the corner cutting process is improved.

Description

Adjustable plate corner cutting device and corner cutting method for furniture production
Technical Field
The invention relates to the technical field of engineering machinery, in particular to an adjustable plate corner cutting device for furniture production and a corner cutting method thereof.
Background
In the production of furniture, in order to shape the furniture item, it is necessary to cut the sheet material. By cutting the regularly shaped sheet material with a corner cut, a furniture part of a specific shape is obtained. And the furniture parts are spliced and assembled to finish the production process of furniture.
When the corner cutting device cuts the plate, the cutting process with different working efficiencies can be realized by adjusting the rotating speed of the blade. The higher the rotation speed is, the better the cutting effect on the plate is. However, for some special plates made of materials, if the specifications of the blades are not changed, only the cutting rotating speed is adjusted, so that the optimal cutting effect cannot be realized, and the service life of the device is also damaged while the production efficiency is influenced.
Disclosure of Invention
In order to solve the technical problems, the adopted technical scheme is as follows:
the invention provides an adjustable plate corner cutting device for furniture production, which comprises a corner cutting device body and a corner cutting device adjusting system, wherein the corner cutting device body is provided with a corner cutting device body; the corner cutting device adjusting system comprises a controller, and a cutting depth detector, a blade temperature detector and a sound frequency detector which are connected with the controller in a signal manner;
the cutting depth detector is used for detecting the cutting depth of the plate in the cutting process; the blade temperature detector is used for detecting temperature information of the blade in the cutting process; the sound wave frequency detector is used for detecting sound wave frequency in the cutting process;
the controller obtains a cutting depth sequence, a temperature change sequence and a sound frequency sequence of the plate in the cutting process of a plurality of blade rotating speeds according to a preset sampling frequency and a preset sampling time; the cutting process at each blade rotating speed corresponds to a plurality of cutting depth sequences, a plurality of temperature change sequences and a plurality of sound wave frequency sequences; obtaining a blade state evaluation sequence under each blade rotating speed according to the fluctuation of the temperature change sequence and the fluctuation amplitude of the sound wave frequency sequence; grouping the blade rotating speeds according to the difference distance of the blade state evaluation sequences among the blade rotating speeds to obtain a plurality of rotating speed groups; taking the rotating speed group with the maximum rotating speed as an analysis rotating speed group; taking the blade rotating speed corresponding to the maximum blade state evaluation in the analysis rotating speed group as an analysis rotating speed; obtaining the cutting adaptation degree of the current plate according to the difference between elements in the cutting depth sequence corresponding to the analysis rotating speed; obtaining an adaptive blade of a plate made of the current material according to the adaptive degree; obtaining the adaptive blades corresponding to the plates made of all materials; and obtaining the adapting blade corresponding to the material of the plate to be cut, and replacing the adapting blade to cut the plate to be cut.
The invention also provides a corner cutting method of the board corner cutting device for adjustable furniture production, which comprises the following steps:
obtaining a cutting depth sequence, a temperature change sequence and a sound frequency sequence of the plate in the cutting process of a plurality of blade rotating speeds according to a preset sampling frequency and a preset sampling time; the cutting process at each blade rotating speed corresponds to a plurality of cutting depth sequences, a plurality of temperature change sequences and a plurality of sound wave frequency sequences;
obtaining a blade state evaluation sequence under each blade rotating speed according to the fluctuation of the temperature change sequence and the fluctuation amplitude of the sound wave frequency sequence; grouping the blade rotating speeds according to the difference distance of the blade state evaluation sequences among the blade rotating speeds to obtain a plurality of rotating speed groups; taking the rotating speed group with the maximum rotating speed as an analysis rotating speed group;
taking the blade rotating speed corresponding to the maximum blade state evaluation in the analysis rotating speed group as an analysis rotating speed; obtaining the cutting adaptation degree of the current plate according to the difference between elements in the cutting depth sequence corresponding to the analysis rotating speed; obtaining an adaptive blade of a plate made of the current material according to the adaptive degree;
obtaining the adaptive blades corresponding to the plates made of all materials; and obtaining the adapting blade corresponding to the material of the plate to be cut, and replacing the adapting blade to cut the plate to be cut.
Further, the obtaining a blade state evaluation sequence at each blade rotation speed according to the fluctuation of the temperature change sequence and the fluctuation amplitude of the sound wave frequency sequence comprises:
obtaining the blade state evaluation at each time according to a blade state evaluation formula, wherein the blade state evaluation formula comprises:
u i ＝e -(maxS-minS)*(varT)
wherein u is i For the blade state evaluation at the ith time instant, maxS is the maximum value in one of the acoustic frequency sequences, minS is the minimum value in one of the acoustic frequency sequences, and varT is the variance of one of the temperature change sequences.
Further, the grouping the blade rotational speeds according to the difference distance of the blade state evaluation sequence between each of the blade rotational speeds, and obtaining a plurality of rotational speed groups includes:
obtaining a difference distance between the blade rotational speeds according to a difference distance formula, the difference distance formula comprising:
Figure BDA0003521728320000021
wherein R (A, E) is the difference distance between the blade rotation speed A and the blade rotation speed B, U A For the blade state evaluation sequence of the blade rotating speed A, U B For the blade state evaluation sequence of the blade rotation speed B, max () is a maximum value function, min () is a minimum value function, mean () is an average value function, and DTW () is a dynamic time warping distance function.
Further, the grouping the blade rotational speeds according to the difference distance of the blade state evaluation sequence between each of the blade rotational speeds, and obtaining a plurality of rotational speed groups includes:
and classifying the rotating speeds of the blades by using a density clustering algorithm according to the difference distances to obtain a plurality of clusters, wherein each cluster is one rotating speed group.
Further, the obtaining the cutting adaptation degree of the current plate according to the difference between the elements in the cutting depth sequence corresponding to the analysis rotating speed includes:
obtaining the cutting adaptation degree according to a cutting adaptation degree formula, wherein the cutting adaptation degree formula comprises:
Figure BDA0003521728320000031
wherein K is the cutting adaptation degree, h i And for the ith cutting depth in the cutting depth sequence corresponding to the analysis rotating speed, N is the number of elements in the cutting depth sequence.
Further, the adapting blade for obtaining the plate material of the current material according to the adapting degree comprises:
if the cutting adaptation degree is larger than a preset threshold value, the adaptation of the current plate and the blade is described; otherwise, the specification of the replacement blade reacquires the cutting adaptation degree until the adaptation blade is obtained.
The embodiment of the invention has at least the following beneficial effects:
according to the embodiment of the invention, the blade state evaluation in a period of time is obtained through the temperature information and the sound frequency information of the blade in the period of time in the cutting process. The state of the blade in the cutting process is represented by the blade state evaluation size, and the blade rotating speeds are grouped according to the blade state. The rotating speeds of the blades with similar blade states in the cutting process are divided into a group, so that the subsequent analysis is convenient. The higher the rotating speed of the blade is, the better the cutting effect on the plate is, so that the rotating speed group with the maximum rotating speed is used as an analysis rotating speed group, and the data referential property is improved. Further, the cutting depth sequence of the analysis rotating speed in the analysis rotating speed group is analyzed to obtain the cutting adaptation degree, and whether the blade is adapted to the plate material of the current material or not can be judged through the cutting adaptation degree, so that the adaptation blade corresponding to the plate material of each material is obtained, the plate material of each material is subjected to targeted cutting, and the cutting efficiency in the production process is improved.
Drawings
FIG. 1 is a control schematic diagram of an adjustable furniture producing board corner cutting device provided by the invention;
fig. 2 is a flow chart of an angle cutting method of the plate angle cutting device for adjustable furniture production.
Detailed Description
In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following description refers to the specific implementation, structure, characteristics and effects of the adjustable plate corner cutting device for furniture production and the corner cutting method thereof according to the invention in detail by combining the accompanying drawings and the preferred embodiment. In the following description, different "one embodiment" or "another embodiment" means that the embodiments are not necessarily the same. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
An adjustable board corner cutting device for furniture production comprises a corner cutting device body and a corner cutting device adjusting system.
The corner cutting device may be a conventional plate cutting machine, and in this embodiment, the corner cutting device body includes a fixing member for fixing a plate, a cutting blade, a blade support, and the like. Because the plate cutting machine is common cutting machine equipment, the structural composition, the working principle and the working process of the plate cutting machine are not repeated.
As shown in fig. 1, the corner cutting device adjustment system includes a controller 101, and a depth of cut detector 102, a blade temperature detector 103, and a sound frequency detector 104 in signal communication with the controller.
The cutting depth detector 102 is used to detect the cutting depth of the sheet material during cutting. The blade temperature detector 103 is used to detect temperature information of the blade during cutting. The acoustic frequency detector 104 is used to detect the acoustic frequency during the cutting process.
In the embodiment of the invention, the cutting depth detector adopts an infrared range finder to project infrared rays to the position right below the incision, and the depth of the blade entering the material during cutting is reflected by reflection of the infrared rays. It should be noted that, when the blade cuts the sheet material, the incision range may be adjusted appropriately so that the infrared rays of the infrared range finder may be directly irradiated under the incision.
In the embodiment of the invention, the blade temperature detector adopts an infrared thermal imaging thermometer, a camera of the infrared thermal imaging thermometer is aligned with a blade in the cutting process, and temperature information is reflected through thermal imaging.
In the embodiment of the invention, the sound wave frequency detector adopts a common sound sensor, and a microphone of the sound sensor is arranged near the cutting blade to collect the sound frequency in the cutting process.
The controller executes a flow chart of an angle cutting method of the plate angle cutting device for adjustable furniture production shown in fig. 2 according to the received data information. The angle cutting method of the plate angle cutting device for adjustable furniture production comprises the following specific steps:
step S1: obtaining a cutting depth sequence, a temperature change sequence and a sound frequency sequence of the plate in the cutting process of a plurality of blade rotating speeds according to a preset sampling frequency and a preset sampling time; the cutting process at each blade rotational speed corresponds to a plurality of sequences of cutting depths, a plurality of sequences of temperature variations, and a plurality of sequences of sonic frequencies.
In the embodiment of the invention, the sampling frequency is set to 125K/Hz,3 seconds are integrated into one sequence, and the sampling time is set to 30 seconds, namely, 10 cutting depth sequences, 10 temperature change sequences and 10 sound wave frequency sequences exist in one sampling time.
It should be noted that, the temperature change sequence may acquire temperature information within 3 seconds through the blade temperature detector, obtain a temperature sequence, and obtain the temperature change sequence according to the difference between adjacent elements in the temperature sequence.
Step S2: obtaining a blade state evaluation sequence at each blade rotating speed according to the fluctuation of the temperature change sequence and the fluctuation amplitude of the sound frequency sequence; grouping the blade rotating speeds according to the difference distance of the blade state evaluation sequences among the blade rotating speeds to obtain a plurality of rotating speed groups; and taking the rotating speed group with the maximum rotating speed as an analysis rotating speed group.
In the cutting process, the blade and the plate friction can generate heat, and in the normal cutting process, the blade and the plate friction generate heat more uniformly, and the temperature change is more uniform. When the rotating speed of the blade or the blade specification is not matched with the plate, the temperature is rapidly increased due to the fact that a large amount of idle work is generated in the cutting process, the cutting property of the blade is affected, the state of the blade is reduced, if the state of the blade is too poor, the rotating speed of the blade is required to be increased, or the current blade specification is not matched with the plate, and the blade with higher hardness is required to be replaced.
In the cutting process, the blade rubs with the plate to generate a large amount of sound wave information, and the sound wave information can reflect the state of the current blade when the plate is cut. For example, when the blade cuts normally, the sound wave changes uniformly, and no severe change occurs; when the rotating speed or hardness of the blade is not matched with that of the current plate, intense and harshly noise can occur in the cutting process, so that the acoustic wave information fluctuates.
Therefore, the blade state evaluation sequence at each blade rotating speed can be obtained according to the fluctuation of the temperature change sequence and the fluctuation amplitude of the wave frequency sequence, and specifically comprises the following steps:
obtaining a blade state evaluation at each time according to a blade state evaluation formula, wherein the blade state evaluation formula comprises:
u i ＝e -(maxS-minS)*(varT)
wherein u is i For blade state evaluation at the ith time instant, maxS is the maximum in a sonic frequency sequence, minS is the minimum in a sonic frequency sequence, and varT is the variance of a temperature change sequence.
In the blade state evaluation formula, the range of the sound wave frequency sequence represents the fluctuation amplitude of the sound wave frequency sequence, and the larger the fluctuation amplitude is, the more unstable the blade cutting state is, and the smaller the blade state evaluation is. The variance of the temperature change sequence indicates the fluctuation of the temperature change sequence, and the larger the fluctuation is, the more unstable the blade cutting state is, and the smaller the blade state evaluation is.
It is to be noted that, according to the blade state evaluation formula, the length of the blade state evaluation sequence is 10, and one blade state evaluation is obtained every three seconds.
For the corner cutting device, the cutting of the plate material to different degrees can be realized by changing the rotating speed of the blade so that the plate material can be cut into ideal states. When cutting a plate made of a fixed material by using a blade with a fixed specification, different blade rotating speeds can show different cutting states in the cutting process, for example, when cutting a plate with higher hardness by using a conventional blade, the state of the blade in the cutting process is poor at a low rotating speed, and the state evaluation of the blade is low; the state of the blade is improved in the cutting process at a high rotation speed, and the evaluation of the state of the blade is larger than that of the blade at a low rotation speed.
The blade rotational speeds may thus be grouped according to the differential distance between the blade condition evaluation sequences, obtaining a plurality of rotational speed groups. Each rotation speed group represents a set of blade rotation speeds that can achieve similar blade condition evaluations, and the greater the rotation speed of the rotation speed group, the better the blade condition evaluation.
Obtaining a difference distance between blade state evaluation sequences includes:
obtaining a difference distance between blade rotational speeds according to a difference distance formula, the difference distance formula comprising:
Figure BDA0003521728320000061
wherein R (A, B) is the difference distance between the blade rotating speed A and the blade rotating speed B, U A Blade state evaluation sequence for blade rotation speed A, U B For the blade state evaluation sequence of the blade rotation speed B, max () is a maximum value function, min () is a minimum value function, mean () is an average value function, and DTW () is a dynamic time warping distance function.
In the formula of the differential distance,
Figure BDA0003521728320000062
representing the difference between the values of two sequence elements, DTW (U A ，U B ) Representing the difference between the two sequences as a whole.
And classifying the rotating speeds of the blades by using a density clustering algorithm according to the difference distances to obtain a plurality of clusters, wherein each cluster is a rotating speed group.
In the embodiment of the invention, the rotating speed groups are divided into three types, namely a low rotating speed group, a medium rotating speed group and a high rotating speed group. In the actual use process, the clustering radius can be set according to the actual cutting scene, so that the three rotating speed groups realize optimal classification, and the method is not limited.
Since the greater the rotational speed, the greater the force exerted by the blade on the sheet material, the better the cutting effect on the sheet material, the rotational speed set with the greatest rotational speed is used as the analysis rotational speed set, i.e., the high rotational speed set is used as the analysis rotational speed set for the subsequent analysis.
Step S3: taking the blade rotating speed corresponding to the maximum blade state evaluation in the analysis rotating speed group as the analysis rotating speed; obtaining the cutting adaptation degree of the current plate according to the difference between elements in the cutting depth sequence corresponding to the analysis rotating speed; and obtaining the adapting blade of the plate material of the current material according to the adapting degree.
The cutting depth can intuitively represent the cutting effect of the blade on the plate, namely, the deeper the cutting depth is in a period of time, the better the cutting effect is.
The analysis rotating speed group comprises one or more blade rotating speeds, each blade rotating speed corresponds to one blade state evaluation sequence, and the blade rotating speed corresponding to the maximum blade state evaluation is taken as the analysis rotating speed. It should be noted that the analysis rotational speed may be regarded as a representative of the analysis rotational speed group for subsequent analysis.
Obtaining the cutting adaptation degree of the current plate according to the difference between elements in the cutting depth sequence corresponding to the analysis rotating speed, wherein the method specifically comprises the following steps:
obtaining a cutting adaptation degree according to a cutting adaptation degree formula, wherein the cutting adaptation degree formula comprises:
Figure BDA0003521728320000071
wherein K is the cutting adaptation degree, h i For analyzing the ith cutting depth in the cutting depth sequence corresponding to the rotating speed, N is the number of elements in the cutting depth sequence.
In the formula of the degree of cut-fit,
Figure BDA0003521728320000072
representing the average depth difference between adjacent moments in the sequence of cutting depths, representing the cutting depth of the blade in the sheet material over a period of time during the current cutting process. The larger the cutting depth, the better the cutting effect, the more K approaches 1; conversely, the smaller the cutting depth, the worse the cutting effect, the closer K is to 0. Thus the greater K indicates the more suitable the current blade is for the sheet of current material.
Therefore, the adapting blade of the plate material with the current material can be obtained according to the adapting degree, and the adapting blade comprises the following specific components:
if the cutting adaptation degree is greater than a preset threshold value, the adaptation of the current plate and the blade is described; otherwise, the specification of the replacement blade reacquires the cutting adaptation degree until the adaptation blade is obtained.
In the embodiment of the invention, the threshold is set to 0.5.
Step S4: obtaining an adaptive blade corresponding to the plate made of all materials; and obtaining an adaptive blade corresponding to the material of the plate to be cut, and replacing the adaptive blade to cut the plate to be cut.
Blade and panel adaptation show in the cutting process, and the blade can be realized can all carrying out effective cutting to panel in the interval of the great rotational speed of scope, avoids a large amount of idle work. So that the adaptive blade corresponding to the plate material of all materials can be obtained. And selecting a corresponding adaptive blade according to the material of the plate to be cut, and controlling the corner cutting device to replace the adaptive blade to cut the plate to be cut, so as to realize a high-efficiency corner cutting process.
In summary, the embodiment of the invention collects the cutting data in the cutting process, and obtains the blade state evaluation sequence of the blade in the cutting process according to the sound data and the temperature data. And grouping the blade rotating speeds according to the difference distances of the blade state evaluation sequences among different blade rotating speeds, and taking the rotating speed group with the maximum rotating speed as an analysis rotating speed group. And selecting an analysis rotating speed from the analysis rotating speed group, and obtaining the cutting adaptation degree of the blade and the plate according to a cutting depth sequence corresponding to the analysis rotating speed. And obtaining the adaptive blades of all materials according to the cutting adaptation degree, and selecting the corresponding adaptive blades for cutting according to the material of the plate to be cut. According to the embodiment of the invention, the adaptive blade corresponding to each material is obtained through analysis of the cutting data, and the targeted cutting is carried out according to the adaptive blade, so that the efficiency of the corner cutting process is improved.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (5)

1. An adjustable board corner cutting device for furniture production comprises a corner cutting device body and is characterized by also comprising a corner cutting device adjusting system; the corner cutting device adjusting system comprises a controller, and a cutting depth detector, a blade temperature detector and a sound frequency detector which are connected with the controller in a signal manner;
the cutting depth detector is used for detecting the cutting depth of the plate in the cutting process; the blade temperature detector is used for detecting temperature information of the blade in the cutting process; the sound wave frequency detector is used for detecting sound wave frequency in the cutting process;
the controller obtains a cutting depth sequence, a temperature change sequence and a sound frequency sequence of the plate in the cutting process of a plurality of blade rotating speeds according to a preset sampling frequency and a preset sampling time; the cutting process at each blade rotating speed corresponds to a plurality of cutting depth sequences, a plurality of temperature change sequences and a plurality of sound wave frequency sequences; obtaining a blade state evaluation sequence under each blade rotating speed according to the fluctuation of the temperature change sequence and the fluctuation amplitude of the sound wave frequency sequence; grouping the blade rotating speeds according to the difference distance of the blade state evaluation sequences among the blade rotating speeds to obtain a plurality of rotating speed groups; taking the rotating speed group with the maximum rotating speed as an analysis rotating speed group; taking the blade rotating speed corresponding to the maximum blade state evaluation in the analysis rotating speed group as an analysis rotating speed; obtaining the cutting adaptation degree of the current plate according to the difference between elements in the cutting depth sequence corresponding to the analysis rotating speed; obtaining an adaptive blade of a plate made of the current material according to the adaptive degree; obtaining the adaptive blades corresponding to the plates made of all materials; obtaining the adaptive blade corresponding to the material of the plate to be cut, and replacing the adaptive blade to cut the plate to be cut;
the blade state evaluation sequence at each blade rotating speed according to the fluctuation of the temperature change sequence and the fluctuation amplitude of the sound wave frequency sequence comprises the following steps:
obtaining the blade state evaluation at each time according to a blade state evaluation formula, wherein the blade state evaluation formula comprises:
u i ＝e -(maxS-minS)*(varT)
wherein u is i For the blade state evaluation at the ith time, maxS is the maximum value in one sound wave frequency sequence, minS is the minimum value in one sound wave frequency sequence, and varT is the variance of one temperature change sequence;
grouping the blade rotational speeds according to the difference distance of the blade state evaluation sequence between each blade rotational speed, wherein obtaining a plurality of rotational speed groups comprises:
obtaining a difference distance between the blade rotational speeds according to a difference distance formula, the difference distance formula comprising:
Figure FDA0004189835780000011
wherein R (A, B) is the difference distance between the blade rotation speed A and the blade rotation speed B, U A For the blade state evaluation sequence of the blade rotating speed A, U B For the blade state evaluation sequence of the blade rotation speed B, max () is a maximum value function, min () is a minimum value function, mean () is an average value function, and DTW () is a dynamic time warping distance function.
2. A method for chamfering a corner chamfering device for adjustable furniture production, the method comprising:
obtaining a cutting depth sequence, a temperature change sequence and a sound frequency sequence of the plate in the cutting process of a plurality of blade rotating speeds according to a preset sampling frequency and a preset sampling time; the cutting process at each blade rotating speed corresponds to a plurality of cutting depth sequences, a plurality of temperature change sequences and a plurality of sound wave frequency sequences;
obtaining a blade state evaluation sequence under each blade rotating speed according to the fluctuation of the temperature change sequence and the fluctuation amplitude of the sound wave frequency sequence; grouping the blade rotating speeds according to the difference distance of the blade state evaluation sequences among the blade rotating speeds to obtain a plurality of rotating speed groups; taking the rotating speed group with the maximum rotating speed as an analysis rotating speed group;
taking the blade rotating speed corresponding to the maximum blade state evaluation in the analysis rotating speed group as an analysis rotating speed; obtaining the cutting adaptation degree of the current plate according to the difference between elements in the cutting depth sequence corresponding to the analysis rotating speed; obtaining an adaptive blade of a plate made of the current material according to the adaptive degree;
obtaining the adaptive blades corresponding to the plates made of all materials; obtaining the adaptive blade corresponding to the material of the plate to be cut, and replacing the adaptive blade to cut the plate to be cut;
the blade state evaluation sequence at each blade rotating speed according to the fluctuation of the temperature change sequence and the fluctuation amplitude of the sound wave frequency sequence comprises the following steps:
obtaining the blade state evaluation at each time according to a blade state evaluation formula, wherein the blade state evaluation formula comprises:
u i ＝e - ( maxS -minS)*( varT )
wherein u is i For the blade state evaluation at the ith time, maxS is the maximum value in one sound wave frequency sequence, minS is the minimum value in one sound wave frequency sequence, and varT is the variance of one temperature change sequence;
grouping the blade rotational speeds according to the difference distance of the blade state evaluation sequence between each blade rotational speed, wherein obtaining a plurality of rotational speed groups comprises:
obtaining a difference distance between the blade rotational speeds according to a difference distance formula, the difference distance formula comprising:
Figure FDA0004189835780000021
wherein R (A, B) is the difference distance between the blade rotation speed A and the blade rotation speed B, U A For the blade state evaluation sequence of the blade rotating speed A, U B For the blade state evaluation sequence of the blade rotation speed B, max () is a maximum value function, min () is a minimum value function, mean () is an average value function, and DTW () is a dynamic time warping distance function.
3. The method for chamfering a board corner chamfering apparatus for producing adjustable furniture as recited in claim 2, wherein grouping the blade rotational speeds according to a difference distance of the blade state evaluation sequence between each of the blade rotational speeds includes:
and classifying the rotating speeds of the blades by using a density clustering algorithm according to the difference distances to obtain a plurality of clusters, wherein each cluster is one rotating speed group.
4. The method for cutting the corner cutting device for the adjustable furniture production according to claim 2, wherein the step of obtaining the cutting adaptation degree of the current board according to the difference between the elements in the cutting depth sequence corresponding to the analysis rotating speed comprises the following steps:
obtaining the cutting adaptation degree according to a cutting adaptation degree formula, wherein the cutting adaptation degree formula comprises:
Figure FDA0004189835780000022
wherein K is the cutting adaptation degree, h i And for the ith cutting depth in the cutting depth sequence corresponding to the analysis rotating speed, N is the number of elements in the cutting depth sequence.
5. The corner cutting method of the board corner cutting device for adjustable furniture production according to claim 2, wherein the adapting blade for obtaining the board of the current material according to the adapting degree comprises:
if the cutting adaptation degree is larger than a preset threshold value, the adaptation of the current plate and the blade is described; otherwise, the specification of the replacement blade reacquires the cutting adaptation degree until the adaptation blade is obtained.
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