CN115870571A - Cutting device control method, system, equipment and medium - Google Patents
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- CN115870571A CN115870571A CN202211549738.4A CN202211549738A CN115870571A CN 115870571 A CN115870571 A CN 115870571A CN 202211549738 A CN202211549738 A CN 202211549738A CN 115870571 A CN115870571 A CN 115870571A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 252
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000003860 storage Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims 4
- 238000005299 abrasion Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000006061 abrasive grain Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application provides a control method, a control system, control equipment and a control medium of a cutting device, and relates to the field of control of cutting machines. When the method is executed, a first relative distance between the actual position of the cutting line and the reference position of the cutting line is firstly obtained, if the first relative distance is larger than a preset threshold range, the working state of the cutting device is obtained, when the working state represents that the cutting device is in the cutting state, the cutting device is controlled to exit the cutting state, and when the working state represents that the cutting device is in the non-cutting state, the cutting device is controlled to give an alarm. So, through the first relative distance between the actual position that detects the line of cut and the reference position of line of cut, if be greater than preset threshold value, explain the wire wheel and produced great wearing and tearing, and then remind relevant personnel in time to change the wire wheel, prevent to lead to the cracked condition of line of cut because of wire wheel wearing and tearing are serious, for artificial judgement wire wheel degree of wear, this scheme is convenient more and reliable.
Description
Technical Field
The present application relates to the field of cutting machine control, and in particular, to a method, a system, a device, and a medium for controlling a cutting apparatus.
Background
Wire cutting refers to a processing method, abrasive grains are inlaid or sprayed on a cutting wire (molybdenum wire, copper wire or alloy wire) moving at a high speed as a carrier, and the cutting wire moving at the high speed drives the abrasive grains to grind and cut an article to finish cutting. In the semiconductor cutting process, after a cutting machine works for a long time, a wire guide wheel of the cutting machine is abraded, when the cutting depth is large, the cutting wire is broken due to the fact that the cutting wire continues to move, and therefore the wire guide wheel needs to be replaced in time before the cutting depth is large.
In the prior art, the period of replacing the wire guide wheel is judged by a user according to self experience, but in the actual production process, because the abrasion degree of the wire guide wheel is different in each processing process, the replacement period of the wire guide wheel is judged to be unreliable only by experience.
Disclosure of Invention
In view of the above, the present application provides a method, a system, a device and a medium for controlling a cutting apparatus, which aim to determine whether a wire guide wheel is severely worn by detecting a distance between a cutting line and a preset reference position.
In a first aspect, the present application provides a method of controlling a cutting device, the cutting device comprising a cutting wire and a wire guide wheel, the cutting wire being wound around the wire guide wheel, the method comprising:
acquiring a first relative distance between the actual position of the cutting line and the reference position of the cutting line;
if the first relative distance is larger than a preset threshold range, acquiring the working state of the cutting device;
if the working state represents that the cutting device is in a cutting state, controlling the cutting device to exit the cutting state;
and if the working state represents that the cutting device is in a non-cutting state, controlling the cutting device to give an alarm.
Optionally, the acquiring a first relative distance between the actual position of the cutting line and the reference position of the cutting line includes:
and detecting the vertical distance between the actual position of the cutting line and the reference position in real time through a sensor, and taking the vertical distance as the first relative distance.
Optionally, when the sensor is located above the reference position, the detecting, by the sensor, a vertical distance between the actual position of the cutting line and the reference position in real time, and taking the vertical distance as the first relative distance includes:
and acquiring a second relative distance between the sensor and the actual position of the cutting line, acquiring a third relative distance between the sensor and the reference position, and acquiring the first distance according to a difference value between the second relative distance and the third relative distance.
Optionally, when the sensor is located below the reference position, the detecting, by the sensor, a vertical distance between the actual position of the cutting line and the reference position in real time, and taking the vertical distance as the first relative distance includes:
and acquiring a second relative distance between the sensor and the actual position of the cutting line, acquiring a third relative distance between the sensor and the reference position, and acquiring the first distance according to a difference value between the third relative distance and the second relative distance.
Optionally, the method of cutting the device further comprises:
acquiring the state of the cutting line, and if the cutting line is broken and the working state indicates that the cutting device is in the cutting state, controlling the cutting device to exit the cutting state;
and if the cutting line is broken and the working state represents that the cutting device is in a non-cutting state, controlling the cutting device to give an alarm.
In a second aspect, the present application provides a cutting device control system, the cutting device comprising a cutting wire and a wire guide wheel, the cutting wire being wound around the wire guide wheel, the system comprising:
an acquisition unit configured to acquire a first relative distance between an actual position of the cutting line and a reference position of the cutting line; if the relative distance is larger than a preset threshold range, acquiring the working state of the cutting device;
the control unit is used for controlling the cutting device to exit from the cutting state if the working state represents that the cutting device is in the cutting state; and if the working state represents that the cutting device is in a non-cutting state, controlling the cutting device to give an alarm.
Optionally, the obtaining unit is specifically configured to detect a vertical distance between the actual position of the cutting line and the reference position in real time through a sensor, and use the vertical distance as the first relative distance.
Optionally, when the sensor is located above the reference position, the detecting, by the sensor, a vertical distance between the actual position of the cutting line and the reference position in real time, and taking the vertical distance as the first relative distance includes:
and acquiring a second relative distance between the actual positions of the sensor and the cutting line, acquiring a third relative distance between the sensor and the reference position, and acquiring the first distance according to a difference value between the second relative distance and the third relative distance.
Optionally, when the sensor is located below the reference position, the detecting, by the sensor, a vertical distance between the actual position of the cutting line and the reference position in real time, and taking the vertical distance as the first relative distance includes:
and acquiring a second relative distance between the sensor and the actual position of the cutting line, acquiring a third relative distance between the sensor and the reference position, and acquiring the first distance according to a difference value between the third relative distance and the second relative distance.
Optionally, the obtaining unit is further configured to obtain a state of the cutting line, and if the cutting line is broken, control the cutting device to exit the cutting state.
In a third aspect, the present application provides an apparatus comprising a memory for storing instructions or code and a processor for executing the instructions or code to cause the apparatus to perform the method of any of the preceding first aspects.
In a fourth aspect, the present application provides a computer storage medium having code stored therein, which when executed, an apparatus for executing the code implements the method of any of the preceding first aspects.
The application provides a control method, a control system, a control device and a control medium of a cutting device. When the method is executed, a first relative distance between the actual position of the cutting line and the reference position of the cutting line is firstly obtained, if the first relative distance is larger than a preset threshold range, the working state of the cutting device is obtained, if the working state represents that the cutting device is in the cutting state, the cutting device is controlled to exit from the cutting state, and if the working state represents that the cutting device is in the non-cutting state, the cutting device is controlled to give an alarm.
So, through the actual position that detects the line of cut with first relative distance between the reference position of line of cut works as the distance is greater than preset threshold value, explains that the wire wheel has produced great wearing and tearing, and then reminds relevant personnel in time to change the wire wheel, prevents to take turns the wearing and tearing condition seriously because of the wire and leads to the cracked condition of line of cut, for artificial judgement wire wheel degree of wearing and tearing, this scheme is convenient more and reliable.
Drawings
To illustrate the technical solutions in the present embodiment or the prior art more clearly, the drawings needed to be used in the description of the embodiment or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a control method of a cutting device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a cutting device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a cutting device according to an embodiment of the present disclosure;
fig. 4 is a schematic view of a cutting device control system according to an embodiment of the present disclosure.
Detailed Description
The terms "first", "second" and "third", etc. in the description and claims of this application and the description of the drawings are used for distinguishing between different objects and not for limiting a particular order.
In the embodiments of the present application, the words "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In order to make the description of the following embodiments more clear, the working of the cutting device is first briefly described:
the cutting line of the cutting device is wound on the wire guide wheel, friction can be generated between the cutting line and the wire guide wheel in the cutting process, after long-time cutting work, the wire guide wheel can be abraded, after abrasion is large, if the wire guide wheel is not replaced, the cutting line can be broken, and therefore the abrasion degree of the wire guide wheel needs to be judged in time.
In order to make the technical solution of the present application clearer and easier to understand, a control method of a cutting device provided in the embodiment of the present application is described below.
Referring to fig. 1, which is a flowchart of a control method of a cutting device according to an embodiment of the present application, the method includes:
s101: the sensor acquires a first relative distance between the actual position of the cutting line and the reference position of the cutting line.
Since friction is generated between the cutting wire and the wire guide wheel during the cutting process, which may cause wear on the surface of the wire guide wheel, the position of the cutting wire may vary with the degree of wear of the wire guide wheel, and thus the actual position of the cutting wire needs to be obtained.
The reference position is an initial position when the cutting line is wound around the unworn wire guide wheel, and it is necessary to reflect the degree of wear of the wire guide wheel according to the position of the cutting line before the wire guide wheel is unworn and the position of the cutting line after the wire guide wheel is worn.
Specifically, the vertical distance between the actual position of the cutting line and the reference position is detected in real time by a sensor, and the vertical distance is taken as the first relative distance.
S102: and if the first relative distance is larger than the preset threshold range, acquiring the working state of the cutting device.
The preset threshold range refers to a range capable of allowing the wire guide wheel to be worn, specifically, the allowable cutting depth range of the wire guide wheel can be 0-1mm or 0-2mm, and when the first relative distance between the actual position of the cutting wire and the reference position is larger than the preset threshold range, it can be shown that the wear of the wire guide wheel is serious at the moment and the wire guide wheel needs to be replaced in time so as to prevent the cutting wire from being broken.
The working state of the cutting device at least comprises a cutting state or a state that the cutting device is electrified but does not start cutting.
S103: and if the current working state represents that the cutting device is in the cutting state, controlling the cutting device to exit the cutting state.
When the cutting device is in a cutting state, but the first relative distance is greater than the preset threshold range, the cutting device needs to be controlled to stop the current state, and if the cutting device continues to cut, the risk of cutting line breakage is generated.
S104: and if the current working state represents that the cutting device is in a non-cutting state, controlling the cutting device to give an alarm.
The non-cutting state is a state that the cutting device is electrified but does not start cutting, and under the condition, an alarm needs to be sent out to remind related personnel of replacing the wire guide wheel.
Through the method, the first relative distance between the actual position of the cutting line and the reference position of the cutting line is detected, when the first relative distance is larger than the preset threshold range, the wire wheel is explained to generate larger abrasion, and then related personnel are reminded to replace the wire wheel in time, the condition that the cutting line is broken due to serious abrasion of the wire wheel is prevented, and the abrasion degree of the wire wheel is judged for people, so that the scheme is more convenient and reliable.
The present disclosure is described below with reference to a specific schematic structural diagram of a cutting device, referring to fig. 2, which is a schematic structural diagram of the cutting device provided in an embodiment of the present disclosure, as shown in fig. 2, the cutting device includes a wire guide wheel 1 and a sensor 2, the sensor 2 is located above a reference position, a vertical distance between an actual position of a cutting line and the reference position is detected in real time by the sensor, the vertical distance is used as a first relative distance d1, a second relative distance d2 between the sensor and the actual position of the cutting line needs to be obtained, a third relative distance d3 between the sensor and the reference position is obtained, and the first distance d1 is obtained according to a difference between the second relative distance d2 and the third relative distance d 3.
The first relative distance between the reference position 3 and the actual position 4 changes with the abrasion of the wire guiding wheel 1, when the abrasion degree of the wire guiding wheel 1 becomes larger and the cutting depth is generated, the first relative distance d1 between the reference position 3 and the actual position 4 becomes larger gradually, the second relative distance d2 between the sensor 2 and the actual position 4 also becomes larger, and the third relative distance d3 between the sensor 2 and the reference position 3 is fixed, so that when the first relative distance d1 is increased and the third relative distance d3 is not changed, the first distance d1 obtained according to the difference value between the second relative distance d2 and the third relative distance d3 also increases, and when the first relative distance d1 is larger than the preset threshold range, the working state of the cutting device is obtained.
In another implementation manner of the embodiment of the present application, when the sensor is located below the reference position, detecting a vertical distance between the actual position of the cutting line and the reference position in real time by the sensor, and taking the vertical distance as the first relative distance, includes: and acquiring a second relative distance between the sensor and the actual position of the cutting line, acquiring a third relative distance between the sensor and the reference position, and acquiring the first distance according to the difference value between the third relative distance and the second relative distance.
Referring to fig. 3, another structural schematic diagram of the cutting device provided in the embodiment of the present application is shown. As shown in the figure, the wire guiding device comprises a wire guiding wheel 1 and a sensor 2, wherein the sensor 2 is located below a reference position, the vertical distance between the actual position of the cutting wire and the reference position is detected in real time through the sensor, the vertical distance is used as a first relative distance d1, a second relative distance d2 between the sensor and the actual position of the cutting wire needs to be obtained, a third relative distance d3 between the sensor and the reference position is obtained, and the first distance d1 is obtained according to the difference value between the second relative distance d2 and the third relative distance d 3.
The first relative distance between the reference position 3 and the actual position 4 changes along with the wear of the wire guiding wheel 1, when the wear degree of the wire guiding wheel 1 becomes large and the cutting depth is generated, the first relative distance d1 between the reference position 3 and the actual position 4 becomes gradually large, the second relative distance d2 between the sensor 2 and the actual position 4 also becomes large, and the third relative distance d3 between the sensor 2 and the reference position 3 is fixed and unchanged, so under the condition that the first relative distance d1 is increased and the d3 is unchanged, the first distance d1 obtained according to the difference value between the third relative distance d3 and the second relative distance d2 also increases, and when the first relative distance d1 is larger than the preset threshold range, the working state of the cutting device is obtained.
In an implementation manner of the embodiment of the application, when the first relative distance is greater than a preset threshold range, the state of the cutting line is obtained, and if the cutting line is broken and the working state indicates that the cutting device is in the cutting state, the cutting device is controlled to exit from the cutting state;
and if the cutting line is broken and the working state represents that the cutting device is in a non-cutting state, controlling the cutting device to alarm.
When the first relative distance is greater than the preset threshold range, in one case, it can be determined that the cutting line has broken, and the working state of the cutting device represents that the cutting device is in the cutting state, which indicates that the cutting device is still running and the cutting line has broken, and if the cutting device is not controlled to exit from the cutting state, certain danger may be caused.
If the cutting line is broken, the working state of the cutting device indicates that the cutting device is in a non-cutting state, that is, the cutting device may be in a state of being powered on but not cutting, and the cutting line is broken, in this case, on one hand, the wire wheel needs to be replaced, the wire also needs to be replaced, on the other hand, a fault may occur in the cutting device, and an alarm needs to be sent out to remind relevant personnel to replace the wire and process the cutting device.
The foregoing provides some specific implementation manners of the cutting device control method for the embodiment of the present application, and based on this, the present application also provides a corresponding system. The system provided by the embodiment of the present application will be described in terms of functional modularity.
Referring to fig. 4, a schematic diagram of a cutting device control system is shown, which includes an acquisition unit 400 and a control unit 410.
An acquisition unit 400 for acquiring a first relative distance between an actual position of the cutting line and a reference position of the cutting line; if the relative distance is larger than the preset threshold range, acquiring the working state of the cutting device;
the control unit 410 is configured to control the cutting device to exit from the cutting state if the working state of the cutting device represents that the cutting device is in the cutting state; and if the working state of the cutting device represents that the cutting device is in a non-cutting state, controlling the cutting device to give an alarm.
In an implementation manner of the embodiment of the present application, the obtaining unit is specifically configured to detect, in real time, a vertical distance between an actual position of the cutting line and a reference position by a sensor, and use the vertical distance as the first relative distance.
In one implementation manner of the embodiment of the present application, when the sensor is located above the reference position, the detecting, by the sensor, a vertical distance between the actual position of the cutting line and the reference position in real time, and taking the vertical distance as the first relative distance includes:
and acquiring a second relative distance between the sensor and the actual position of the cutting line, acquiring a third relative distance between the sensor and the reference position, and acquiring the first distance according to the difference value between the second relative distance and the third relative distance.
In one implementation manner of the embodiment of the present application, when the sensor is located below the reference position, detecting a vertical distance between an actual position of the cutting line and the reference position in real time by the sensor, and taking the vertical distance as the first relative distance includes:
and acquiring a second relative distance between the actual positions of the sensor and the cutting line, acquiring a third relative distance between the sensor and the reference position, and acquiring the first distance according to a difference value between the third relative distance and the second relative distance.
In an implementation manner of the embodiment of the present application, the obtaining unit is further configured to obtain a state of the cutting line, and if the cutting line is broken, the cutting device is controlled to exit the cutting state.
The embodiment of the application also provides corresponding equipment and a computer storage medium, which are used for realizing the scheme provided by the embodiment of the application.
Wherein the apparatus comprises a memory for storing instructions or code and a processor for executing the instructions or code to cause the apparatus to perform the method of any embodiment of the present application.
The computer storage medium has code stored therein that, when executed, causes an apparatus that executes the code to implement a method as described in any of the embodiments of the present application.
As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the method of the above embodiments may be implemented by software plus a general hardware platform. Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a read-only memory (ROM)/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network communication device such as a router) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, they are described in a relatively simple manner, and reference may be made to some descriptions of method embodiments for relevant points. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
It should be further noted that, in this specification, each embodiment is described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on differences from other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, they are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts suggested as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method of controlling a cutting device, the cutting device including a cutting wire and a wire guide wheel around which the cutting wire is wound, the method comprising:
acquiring a first relative distance between the actual position of the cutting line and the reference position of the cutting line;
if the first relative distance is larger than a preset threshold range, acquiring the working state of the cutting device;
if the working state represents that the cutting device is in a cutting state, controlling the cutting device to exit the cutting state;
and if the working state represents that the cutting device is in a non-cutting state, controlling the cutting device to give an alarm.
2. The method of claim 1, wherein said obtaining a first relative distance between an actual position of the cutting line and a reference position of the cutting line comprises:
and detecting the vertical distance between the actual position of the cutting line and the reference position in real time through a sensor, and taking the vertical distance as the first relative distance.
3. The method according to claim 2, wherein the detecting a vertical distance between the actual position of the cutting line and the reference position in real time by the sensor when the sensor is located above the reference position and taking the vertical distance as the first relative distance comprises:
and acquiring a second relative distance between the actual positions of the sensor and the cutting line, acquiring a third relative distance between the sensor and the reference position, and acquiring the first relative distance according to a difference value between the second relative distance and the third relative distance.
4. The method according to claim 2, characterized in that said detecting in real time, by means of a sensor, a vertical distance between the actual position of the cutting line and the reference position, when the sensor is located below the reference position, and taking the vertical distance as the first relative distance, comprises:
and acquiring a second relative distance between the sensor and the actual position of the cutting line, acquiring a third relative distance between the sensor and the reference position, and acquiring the first distance according to a difference value between the third relative distance and the second relative distance.
5. The method of claim 1, further comprising:
acquiring the state of the cutting line;
if the cutting line is broken, controlling the cutting device to exit the cutting state;
6. a cutting device control system, wherein the cutting device includes a cutting wire and a wire guide wheel, the cutting wire being wound around the wire guide wheel, the system comprising:
an acquisition unit configured to acquire a first relative distance between an actual position of the cutting line and a reference position of the cutting line; if the relative distance is larger than a preset threshold range, acquiring the working state of the cutting device;
the control unit is used for controlling the cutting device to exit from the cutting state if the working state represents that the cutting device is in the cutting state; and if the working state represents that the cutting device is in a non-cutting state, controlling the cutting device to give an alarm.
7. The system according to claim 6, wherein the acquisition unit is configured to detect a vertical distance between the actual position of the cutting line and the reference position in real time by a sensor, and to use the vertical distance as the first relative distance.
8. The system according to claim 6, wherein the obtaining unit is further configured to obtain a state of the cutting wire, and if the cutting wire breaks, control the cutting device to exit the cutting state.
9. A computing device, wherein the device comprises: a memory and a processor;
the memory for storing a computer program;
the processor, when executing the computer program, implementing the steps of any of claims 1 to 5.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of any of the claims 1 to 5.
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CN214290580U (en) * | 2020-12-25 | 2021-09-28 | 苏州伯特利汽车零部件制造有限公司 | Cutting equipment of cable conductor |
CN114227706A (en) * | 2021-12-15 | 2022-03-25 | 熵智科技(深圳)有限公司 | Groove cutting method, device, equipment, system and medium based on 3D vision |
CN114578753A (en) * | 2022-01-20 | 2022-06-03 | 西门子(中国)有限公司 | Workpiece processing control method and device, computer equipment and computer readable medium |
CN217862153U (en) * | 2021-09-28 | 2022-11-22 | 江阴久盛科技有限公司 | Wire wheel structure of multi-wire cutting machine |
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