CN116690303A - Machine tool anti-collision cutter control method, machine tool and computer readable storage medium - Google Patents
Machine tool anti-collision cutter control method, machine tool and computer readable storage medium Download PDFInfo
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- CN116690303A CN116690303A CN202310796563.5A CN202310796563A CN116690303A CN 116690303 A CN116690303 A CN 116690303A CN 202310796563 A CN202310796563 A CN 202310796563A CN 116690303 A CN116690303 A CN 116690303A
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000003860 storage Methods 0.000 title claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims description 17
- 238000003754 machining Methods 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
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- 238000005553 drilling Methods 0.000 description 7
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- 238000013459 approach Methods 0.000 description 6
- 238000003801 milling Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
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- 238000004088 simulation Methods 0.000 description 4
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- 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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/013—Control or regulation of feed movement
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- 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
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The application provides a machine tool anti-collision cutter control method, a machine tool and a computer readable storage medium, wherein the method comprises the following steps: controlling the tool to feed the workpiece at a first speed; detecting the real-time feeding speed of the cutter, and judging whether the real-time feeding speed is lower than a preset feeding speed; and if the real-time feeding speed is greater than the preset feeding speed, controlling the cutter to stop moving and outputting fault information. The control method for the anti-collision cutter of the machine tool can predict and further reduce the occurrence of the cutter collision accident of the machine tool, improve the intelligent level and the safety performance of the machine tool, reduce the equipment and personal accidents and reduce the economic loss.
Description
Technical Field
The application belongs to the technical field of mechanical equipment, and particularly relates to a machine tool anti-collision cutter control method, a machine tool and a computer readable storage medium.
Background
The numerical control machine tool knife collision is an accident which is difficult to completely avoid in the use process of the machine tool, and once the knife collision is light, the cutter and the workpiece are damaged, and when the knife collision is heavy, the machine tool is damaged, the precision is reduced, so that the workpiece is scrapped, even personal injury is caused, and serious consequences are caused. Therefore, the numerical control machine tool can prevent the cutter collision from being a common problem for machine tool manufacturing enterprises and use enterprises, the enterprises take a plurality of measures from the aspects of technology and management, but the prior art cannot pre-judge the occurrence of cutter collision accidents, and the problems of cutter collision accidents, namely the post protection after the cutter collision, can reduce the accident loss, but do not fundamentally solve the cutter collision problems.
Disclosure of Invention
In view of the above, the present application provides a method for controlling a crashproof tool of a machine tool, a machine tool and a computer readable storage medium, so as to solve the problem of crashproof tool of a numerical control machine tool in the prior art.
In order to solve the technical problems, the application adopts a technical scheme that: provided is a method for controlling a crashproof cutter of a machine tool, comprising the following steps: controlling the tool to feed the workpiece at a first speed; detecting the real-time feeding speed of the cutter, and judging whether the real-time feeding speed is lower than a preset feeding speed; and if the real-time feeding speed is greater than the preset feeding speed, controlling the cutter to stop moving and outputting fault information.
According to one embodiment of the application, working data of the cutter is obtained, wherein the working data comprises cutting depth, cutter parameters, cutting materials and cutter rotating speed; and determining the preset feeding speed according to the working data.
According to an embodiment of the present application, before the controlling the tool to feed toward the workpiece at the first speed, the controlling method further includes controlling the tool to perform an auxiliary movement, the controlling the tool to perform an auxiliary movement includes: controlling the tool to feed the workpiece at a second speed; detecting a first distance between the cutter and the workpiece, and judging whether the first distance is smaller than a first preset distance or not; and if the first distance is smaller than the first preset distance, controlling the cutter to feed to the workpiece at the first speed, wherein the second speed is larger than the first speed.
According to one embodiment of the application, controlling the tool to feed the workpiece at the first speed includes: controlling the tool to start feeding to the workpiece at the first speed after stopping; or controlling the cutter to be decelerated to the first speed and then fed to the workpiece.
According to one embodiment of the application, the tool is controlled to rotate when the tool is fed to the workpiece at the first speed; the tool is controlled to not rotate while the tool is being fed to the workpiece at the second speed.
According to an embodiment of the present application, the controlling the auxiliary movement of the cutter further includes: detecting a second distance between the cutter and a machine tool part, and judging whether the second distance is smaller than a second preset distance; if the second distance is smaller than the second preset distance, controlling the cutter to stop; judging whether the cutter is stopped or not; and if the cutter is not stopped, outputting fault information.
According to an embodiment of the application, the second distance of the tool from the machine tool part comprises a distance of the tool axis from the machine tool part and a distance of the tool radial from the machine tool part.
According to an embodiment of the application, the method further comprises: and if the real-time feeding speed is smaller than or equal to the preset feeding speed, controlling the cutter to normally execute the machining action.
In order to solve the technical problems, the application adopts another technical scheme that: there is provided a machine tool comprising a numerical control system, a measurement system and a control system coupled to each other, wherein: the numerical control system controls the cutter to feed to the workpiece at a first speed; the measuring system detects the real-time feeding speed of the cutter; the control system judges whether the real-time feeding speed is lower than the preset feeding speed, and if the real-time feeding speed is higher than the preset feeding speed, a stopping instruction is sent to the numerical control system and fault information is output; and the numerical control system receives the stopping instruction and controls the cutter to stop moving.
In order to solve the technical problems, the application adopts another technical scheme that: there is provided a computer readable storage medium having stored thereon program data which when executed by a processor implements the above-described method of controlling a crashworthiness of a machine tool.
The beneficial effects of the application are as follows: provided is a method for controlling a crashproof cutter of a machine tool, comprising the following steps: controlling the tool to feed the workpiece at a first speed; detecting the real-time feeding speed of the cutter, and judging whether the real-time feeding speed is lower than a preset feeding speed; and if the real-time feeding speed is greater than the preset feeding speed, controlling the cutter to stop moving and outputting fault information. The application determines whether the feeding speed of the cutter exceeds the allowable maximum value during the feeding movement by detecting the real-time feeding speed of the cutter in real time and judging whether the real-time feeding speed is lower than the preset feeding speed in real time, and if so, controls the cutter to stop the feeding movement and sends out an alarm to prompt an operator. The machine tool anti-collision cutter control method can pre-judge the cutter collision and take measures to stop the cutter from continuously executing feeding movement, so that the cutter collision probability is reduced, the occurrence of cutter collision accidents is reduced, the intelligent level and safety performance of the machine tool are improved, the equipment and personal accidents are reduced, and the economic loss is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic flow chart of an embodiment of a method for controlling a crashworthy tool of a machine tool according to the present application;
FIG. 2 is a schematic view of an embodiment of a tool processing method according to the present application;
FIG. 3 is a schematic flow chart of another embodiment of a method for controlling a crashworthy tool of the present application;
FIG. 4 is a schematic view of another embodiment of the tool processing method of the present application;
FIG. 5 is a schematic flow chart diagram of a method for controlling a crashworthy tool of the machine tool according to another embodiment of the present application;
FIG. 6 is a schematic flow chart diagram of a method for controlling a crashworthy tool of the present application;
FIG. 7 is a schematic flow chart diagram of a method for controlling a crashworthy tool of the present application;
FIG. 8 is a schematic view of an embodiment of a machine tool;
FIG. 9 is a schematic diagram of an embodiment of a computer-readable storage medium.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
At present, machine tool manufacturing enterprises and using enterprises face the problem that numerical control machine tools are easy to collide with cutters together, and various enterprises take a plurality of measures from the aspects of technology and management: when the tool collision phenomenon occurs, the current of the spindle motor or the tool feeding motor of the machine tool suddenly exceeds a set value, and the machine tool immediately performs overload protection or shutdown. Although the method can reduce accident loss, the method belongs to post-protection and cannot avoid accident occurrence. Secondly, through photoelectric signal protection, when the machine tool has the phenomenon of cutter collision, the turret cutter head generates micro rotation, the round grating connected with the turret shaft rotates and sends an overload alarm signal, and the machine tool is stopped rapidly. Also, although this method can reduce accident loss, it belongs to post-protection and cannot avoid accident. Thirdly, related programs are written through simulation, and errors in the running of the cutter can be found through simulation running after the programs are written. But it is difficult to avoid the knife collision accidents caused by factors such as knife setting origin, too high feeding speed, knife selection errors, program call errors and the like. Fourthly, by establishing an actual machining environment of the simulation machine tool, detecting the distance between the cutter and the machine tool or the workpiece, and judging whether collision occurs. This method can reduce the collision of the tool with the machine tool, but cannot avoid the collision of the tool with the machine tool or the workpiece, which is not in the simulation environment.
The following solution is adopted to solve the above problems.
An embodiment of the present application provides a method for controlling a crashproof tool of a machine tool, referring to fig. 1, the method includes: controlling the tool 10 to feed the workpiece 20 at a first speed; detecting the real-time feeding speed of the cutter 10, and judging whether the real-time feeding speed is lower than a preset feeding speed; if the real-time feed speed is greater than the preset feed speed, the cutter 10 is controlled to stop moving and fault information is output.
Specifically, referring to fig. 1, the machine tool anti-collision cutter control method includes the steps of:
s10: the tool 10 is controlled to feed the workpiece 20 at a first speed.
The tool 10 is controlled to approach the workpiece 20 at a first speed to machine (in the form of milling or drilling) the workpiece 20.
S20: the real-time feed speed of the tool 10 is detected.
The real-time feeding speed of the cutter 10 is detected, and the feeding speed is the relative speed of the cutter 10 and the workpiece 20.
S30: and judging whether the real-time feeding speed is lower than a preset feeding speed.
And simultaneously judges whether the real-time feeding speed of the cutter 10 at the moment is smaller than the preset feeding speed. The preset feeding speed is the maximum feeding speed allowed by the cutter without striking the cutter.
S40: if the real-time feed speed is greater than the preset feed speed, the cutter 10 is controlled to stop moving and fault information is output.
If the real-time feeding speed is greater than the preset feeding speed, it is predicted that the tool 10 may collide with the tool at this time, that is, the tool 10 collides with the workpiece 20 when the real-time feeding speed is too high. And then the cutter 10 is controlled to stop approaching the workpiece 20, the cutter 10 stops feeding, and meanwhile, fault information is output to inform an operator to check whether the cutter collision risk exists or not, and whether the machining process is wrong or not.
S50: if the real-time feeding speed is smaller than or equal to the preset feeding speed, the processing action is normally executed.
If the real-time feeding speed is less than or equal to the preset feeding speed, the cutter 10 is controlled to normally process the workpiece 20, and the processing action is normally executed.
In this embodiment, by detecting the feeding speed of the cutter 10 in real time, determining whether the real-time feeding speed is less than the preset feeding speed, if the feeding speed is greater than the preset feeding speed, controlling the cutter 10 to stop feeding, and sending out fault information to notify an operator, the operator can perform the prediction of the cutter collision, thereby reducing the occurrence of cutter collision accidents.
In some embodiments of the present application, the method for controlling a crashworthiness knife of a machine tool further includes: acquiring working data of the cutter 10, wherein the working data comprise cutting depth h, cutter parameters, cutting materials, cutter rotating speed and the like; and determining a preset feeding speed according to the working data. Specifically, the machine tool crashworthy tool control method needs to determine whether the real-time feeding speed of the tool 10 is below a preset feeding speed, which is set to be different according to different working data of the tool 10. Referring to fig. 2, the working data of the tool 10 includes a cutting depth h of the tool, which is a distance between the tip 11 of the tool 10 and the surface 21 of the workpiece 20. When the cutting depth h is large, the preset feeding speed of the cutter 10 is set to be small, so that the probability of cutter collision can be reduced; when the cutting depth h is small, the preset feed speed of the setting tool 10 is large, and the machining efficiency can be improved. The working data of the tool 10 further include tool parameters, cutting materials, and tool rotation speeds, wherein the tool parameters include the diameter, length, shape, etc. of the tool 10, the cutting materials can be metal materials, resin materials, etc., and the preset feeding speeds of the tool 10 are set according to different tool parameters, cutting materials, and tool rotation speeds, and are determined according to practical situations.
In one embodiment, the tool 10 is controlled to approach the workpiece 20 at a first speed to machine the workpiece 20 by milling or drilling.
When the machining mode is milling, referring to fig. 2 and 3, the machine tool anti-collision cutter control method includes:
s11: the tool 10 is controlled to approach the workpiece 20 in a first direction x at a first speed to mill the workpiece 20.
S21: the cutting depth h and the real-time feed speed of the tool 10 are measured in real time.
Two data of the tool 10 are measured in real time, namely the cutting depth h and the real-time feed rate. The feed rate is the relative speed of the tool 10 and the workpiece 20 in the first direction x. When the machining mode is milling, the preset feeding speeds corresponding to the different cutting depths h of the cutter 10 are also different, and the cutting depths h and the real-time feeding speeds of the cutter 10 are measured in real time, so that whether the cutter is collided can be prejudged.
S31: and judging whether the real-time feeding speed is lower than a preset feeding speed.
As in step S30, it is determined whether the real-time feeding speed of the cutter 10 is less than the preset feeding speed. The preset feeding speed is the maximum feeding speed allowed by the cutter without striking the cutter.
S41: if the real-time feed speed is greater than the preset feed speed, the cutter 10 is controlled to stop moving in the first direction x and output fault information.
If the real-time feeding speed is greater than the preset feeding speed, the cutter 10 is predicted to possibly collide with the cutter, then the cutter 10 is controlled to stop approaching the workpiece 20 in the first direction x, the cutter 10 stops feeding, meanwhile, fault information is output, and an operator is informed of whether the cutter collision is dangerous or not, and whether the machining process is wrong or not.
S51: if the real-time feeding speed is smaller than or equal to the preset feeding speed, the processing action is normally executed.
If the real-time feeding speed is less than or equal to the preset feeding speed, the cutter 10 is controlled to normally process the workpiece 20, and the processing action is normally executed.
When the machining mode is drilling, referring to fig. 4 and 5, the machine tool anti-collision cutter control method includes:
s12: the tool 10 is controlled to approach the workpiece 20 in the second direction y at a first speed to drill the workpiece 20.
S22: the real-time feed speed of the tool 10 is measured in real time.
Only the real-time feed speed of the tool 10 needs to be measured in real time at this time. The feed speed is the relative speed of the tool 10 and the workpiece 20 in the second direction y. When the machining mode is drilling, the drilling depth of the cutter 10 is set in advance, and the detection system only needs to measure the real-time feeding speed of the cutter 10 in real time at the moment so as to pre-judge whether the cutter is collided.
S32: and judging whether the real-time feeding speed is lower than a preset feeding speed.
As in step S30, it is determined whether the real-time feeding speed of the cutter 10 is less than the preset feeding speed. The preset feed rate is the maximum feed rate allowed by the cutter 10 without striking the cutter.
S42: if the real-time feed speed is greater than the preset feed speed, the cutter 10 is controlled to stop moving in the second direction y and output fault information.
If the real-time feeding speed is greater than the preset feeding speed, it is predicted that the tool 10 may collide with the tool at this time, that is, the tool 10 collides with the workpiece 20 when the real-time feeding speed is too high. The tool 10 is controlled to stop approaching the workpiece 20 in the second direction y, the tool 10 stops feeding, and fault information is output to inform an operator to check whether the tool collision risk exists or not, and whether the machining process is wrong or not.
S52: if the real-time feeding speed is smaller than or equal to the preset feeding speed, the processing action is normally executed.
If the real-time feeding speed is less than or equal to the preset feeding speed, the cutter 10 is controlled to normally process the workpiece 20, and the processing action is normally executed.
In some embodiments of the present application, the method of controlling a tool 10 to assist in a machine tool anti-collision tool further includes controlling the tool 10 to assist in a motion prior to controlling the tool 10 to feed the workpiece 20 at a first speed, the controlling the tool 10 to assist in a motion comprising: controlling the tool 10 to feed the workpiece 20 at a second speed; detecting a first distance s between the cutter 10 and the workpiece 20, and judging whether the first distance s is smaller than a first preset distance; if the first distance s is less than the first predetermined distance, the tool 10 is controlled to feed the workpiece 20 at a first speed, and the second speed is greater than the first speed. Specifically, before the tool 10 is controlled to feed the workpiece 20 at the first speed, the tool 10 is controlled to perform an auxiliary motion, that is, a motion of the tool 10 approaching the workpiece 20 before the main processing. Referring to fig. 6, the auxiliary movement of the cutter 10 includes the steps of:
s101: the tool 10 is controlled to feed the workpiece 20 at a second speed.
When the auxiliary movement is performed, the tool 10 does not start machining, and at this time, the tool 10 is controlled to approach the workpiece 20 at a faster second speed, which is greater than the first speed, so that the machining efficiency can be improved, and the operation time can be saved.
S102: the first distance s of the tool 10 from the workpiece 20 is detected in real time.
When the machining mode is milling, referring to fig. 2, the first distance s is a distance of the tool 10 approaching the workpiece 20 in the first direction x; when the machining mode is drilling, referring to fig. 4, the first distance s is a distance of the tool 10 approaching the workpiece 20 in the second direction y.
S103: it is determined whether the first distance s is smaller than a first predetermined distance.
The first predetermined distance is the minimum distance allowed without striking the tool as the tool is fed at the second speed toward the workpiece 20. The first predetermined distance is the relative distance of the tool 10 from the workpiece 20. Because the tool 10 is approaching the workpiece 20 at a faster second speed during the auxiliary movement there is a risk of a knife collision. It is necessary to determine in real time whether the first distance s between the tool 10 and the workpiece 20 is less than a first predetermined distance.
S104: if the first distance is less than the first predetermined distance, the tool 10 is controlled to feed the workpiece 20 at a first speed, and the second speed is greater than the first speed.
If the first distance s is less than the first predetermined distance, the tool 10 is then controlled to feed the workpiece 20 at a first speed that is less than the second speed. When the first distance s is less than the first predetermined distance, the auxiliary movement is ended, the tool 10 may start working, working the workpiece 20, and the tool 10 is controlled to feed the workpiece 20 at the first speed.
S105: if the first distance is greater than or equal to the first predetermined distance, the tool 10 is controlled to feed the workpiece 20 at a second speed, which is greater than the first speed.
If the first distance is greater than or equal to the first predetermined distance, indicating that the auxiliary movement is not finished at this time, continuing to control the tool 10 to feed the workpiece 20 at the second speed. Step S101 is repeated.
In the embodiment, when the tool 10 performs auxiliary movement, by detecting the first distance s between the tool 10 and the workpiece 20 in real time, whether the first distance s is smaller than the first predetermined distance is determined, if the first distance s is smaller than the first predetermined distance, the transition speed of the tool 10 is controlled, and the tool is fed to the workpiece 20 at a smaller first speed, so that the probability of tool collision is reduced.
In some embodiments of the present application, the step S104, controlling the tool 10 to feed the workpiece 20 at the first speed includes: controlling the tool 10 to stop and then start feeding the workpiece 20 at a first speed; alternatively, the tool 10 is controlled to be decelerated to a first speed and then fed toward the workpiece 20. Specifically, when it is determined that the first distance s is smaller than the first predetermined distance, the auxiliary movement is ended, the tool 10 may start working, and the work 20 is processed, and at this time, the tool 10 is controlled to feed the work 20 at the first speed. Controlling the tool 10 to feed the workpiece 20 at the first speed includes two ways: on the other hand, after the cutter 10 for controlling the second speed feed is stopped, the cutter is started at the first speed to feed the workpiece 20; in the second aspect, the speed of the tool 10 is directly controlled to be reduced from the second speed to the first speed, and the feeding is performed to the workpiece 20.
In some embodiments of the present application, the tool 10 is controlled to rotate as the tool 10 is fed to the workpiece 20 at a first speed; the tool 10 is controlled not to rotate while the tool 10 is being fed to the workpiece 20 at the second speed. Specifically, during the auxiliary movement, the cutter 10 is controlled to approach the workpiece 20 at the second speed, and at this time, the cutter 10 does not work, and the cutter 10 does not rotate itself, so that electric power can be saved; when the cutter 10 is controlled to feed the workpiece 20 at the first speed, the cutter 10 itself rotates, and the cutter 10 starts to operate.
In some embodiments of the present application, controlling the tool 10 to perform an auxiliary motion further comprises: detecting a second distance between the cutter 10 and the machine tool part, and judging whether the second distance is smaller than a second preset distance; if the second distance is less than the second predetermined distance, controlling the cutter 10 to stop; judging whether the cutter 10 is stopped; if the tool 10 is not stopped, a failure message is output. Specifically, referring to fig. 7, the auxiliary movement of the cutter 10 further includes the steps of:
s1011: a second distance of the tool 10 from the machine tool component is detected.
The second distance of the tool 10 from the other parts of the machine tool is detected in real time.
S1021: it is determined whether the second distance is less than a second predetermined distance.
The second predetermined distance is the minimum distance allowed without striking the tool while the tool 10 is in auxiliary motion and is fed to the workpiece 20 at the second speed. The second predetermined distance is the relative distance of the tool 10 from the machine tool component. It is determined whether the second distance of the tool 10 is less than a second predetermined distance.
S1031: if the second distance is less than the second predetermined distance, the cutter 10 is controlled to stop the feeding motion. If the second distance is smaller than the second preset distance, the cutter 10 is predicted to have cutter collision risk with other parts of the machine tool, and the cutter 10 is immediately controlled to stop feeding movement, so that cutter collision is avoided.
S10311: if the second distance is greater than or equal to the second predetermined distance, the tool 10 is controlled to continue the auxiliary movement. Step S1011 is repeated.
S1041: if the second distance is less than the second predetermined distance, it is determined whether the tool 10 is stopped.
S1051: if the cutter 10 is not stopped, the cutter 10 is controlled to stop the feeding movement while outputting the failure information.
If the cutter 10 is not stopped, the cutter 10 is controlled to stop the feeding motion again, and meanwhile, fault information is output to inform an operator to check whether the cutter is in danger of collision, whether the machining process is in error or whether corresponding measures are needed.
When the cutter 10 is stopped, the operation is completed, and the operator is notified of the information to view for the next operation.
In some embodiments of the present application, the second distance of the tool 10 from the machine tool component includes the distance of the tool 10 from the machine tool component in the axial direction and the distance of the tool 10 from the machine tool component in the radial direction. Specifically, a second distance of the tool 10 from other parts of the machine tool is detected in real time, wherein the second distance includes a distance between the tool 10 and the machine tool parts in the axial direction and a distance between the tool 10 and the machine tool parts in the radial direction. I.e. the second distance comprises the relative distance of the tool 10 from the horizontal direction of the machine tool part and also comprises the relative distance of the tool 10 from the vertical direction of the machine tool part.
To solve the above technical problem, the present application also provides a machine tool 30, referring to fig. 8, the machine tool 30 includes a numerical control system 31, a measurement system 32, and a control system 33 coupled to each other, wherein: the numerical control system 31 controls the tool 10 to feed the workpiece 20 at a first speed; the measuring system 32 detects the real-time feed speed of the tool 10; the control system 33 judges whether the real-time feeding speed is below a preset feeding speed, and if the real-time feeding speed is greater than the preset feeding speed, sends a stopping instruction to the numerical control system 31 and outputs fault information; the numerical control system 31 receives the parking instruction and controls the cutter to stop moving. The numerical control system 31, the measurement system 32 and the control system 33, which are coupled with each other, can implement the method for controlling the crashworthiness of the machine tool according to any of the above embodiments.
Specifically, the numerical control system 31 controls the tool 10 to feed the workpiece 20 at a first speed to process (in the manner of milling or drilling) the workpiece 20. The real-time feed speed of the tool 10 is detected by the measurement system 32, and the real-time feed speed of the tool 10 is detected by the measurement system 32. The control system 33 determines whether the real-time feed speed is below a preset feed speed: if the real-time feeding speed is less than or equal to the preset feeding speed, the numerical control system 31 controls the cutter 10 to normally process the workpiece 20 and normally execute the processing action; if the real-time feed rate is greater than the preset feed rate, the control system 33 predicts that the tool 10 may collide with the workpiece 20 at this time, i.e., when the real-time feed rate of the tool 10 is too high. When the control system 33 predicts that the knife will collide, the control system 33 sends a stopping instruction to the numerical control system 31, and the control system 33 outputs fault information. The numerical control system 31 receives the parking instruction and controls the cutter 10 to stop moving.
The measuring system 32 of the machine tool 30 of the present application includes detection means such as an optical camera and a radar, and the detection means is mounted on the machine tool 30 so that the position thereof can be fixed, and can also be moved along a dedicated track within a certain range according to the measurement requirement, and a three-dimensional measuring system is constructed within a specified detection range so as to measure the distance, relative speed, etc. between the tool 10 and other objects (including the workpiece 20 and other parts of the machine tool) in the axial direction, the radial direction.
The measurement system 32 also has a contamination prevention and self-cleaning function. The anti-contamination function may be to mount a glass cover over the camera or radar contained in the measurement system 32 to prevent cutting debris. The self-cleaning function may include spray cleaning the measurement system 32 with high pressure water and high pressure air. In addition, manual cleaning may be performed periodically to provide routine maintenance to the measurement system 32 to ensure measurement accuracy.
By using the machine tool 30, the numerical control system 31, the measuring system 32 and the control system 33 which are mutually coupled, the cutter can be pre-judged, and measures are taken to stop the cutter from continuing to implement the feeding movement, so that the cutter collision probability is reduced, the occurrence of cutter collision accidents is reduced, the intelligent level and the safety performance of the machine tool are improved, the equipment and personal accidents are reduced, and the economic loss is reduced.
To solve the above technical problem, the present application further provides a computer readable storage medium 40, on which program data 41 is stored, where the program data 41 implements the method for controlling a collision avoidance tool of a machine tool according to any one of the above embodiments when executed by a processor.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical, or other forms.
The elements illustrated as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium 40. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium 40, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium 40 includes: a U-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.
In summary, the present application adopts a method for controlling a crashproof tool of a machine tool, in which, in a first aspect, a tool 10 is controlled to feed a workpiece 20 at a first speed, a real-time feeding speed of the tool 10 is measured, and whether the real-time measuring speed is smaller than a preset feeding speed is determined; if the real-time feeding speed is greater than the preset feeding speed, a stopping instruction is sent, fault information is output, and the cutter is controlled to stop moving. In the second aspect, when the tool 10 performs the auxiliary motion, the method further measures a first distance s between the tool 10 and the workpiece 20 in real time, and determines whether the first distance s is smaller than a first predetermined distance; if the first distance s is less than the first predetermined distance, the tool 10 is controlled to feed the workpiece 20 at a first speed. In a third aspect, when the tool 10 performs auxiliary movement, the method further measures a second distance between the tool 10 and other parts of the machine tool in real time, and determines whether the second distance is smaller than a second predetermined distance; if the second distance is less than the second predetermined distance, controlling the cutter 10 to stop; and judges whether or not the cutter 10 is stopped; if the tool 10 is not stopped, the control system outputs a fault message to alert the operator. The control method for the anti-collision cutter of the machine tool can predict and further reduce the occurrence of the cutter collision accident of the machine tool 30, improve the intelligent level and the safety performance of the machine tool 30, reduce the equipment and personal accidents and reduce the economic loss.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.
Claims (10)
1. A method for controlling a crashproof tool of a machine tool, comprising:
controlling the tool to feed the workpiece at a first speed;
detecting the real-time feeding speed of the cutter, and judging whether the real-time feeding speed is lower than a preset feeding speed;
and if the real-time feeding speed is greater than the preset feeding speed, controlling the cutter to stop moving and outputting fault information.
2. The control method according to claim 1, characterized in that the method further comprises:
acquiring working data of the cutter, wherein the working data comprise cutting depth, cutter parameters, cutting materials and cutter rotating speed;
and determining the preset feeding speed according to the working data.
3. The control method of claim 1, wherein prior to the controlling the tool to feed the workpiece at the first speed, the control method further comprises controlling the tool to perform an auxiliary motion, the controlling the tool to perform an auxiliary motion comprising:
controlling the tool to feed the workpiece at a second speed;
detecting a first distance between the cutter and the workpiece, and judging whether the first distance is smaller than a first preset distance or not;
and if the first distance is smaller than the first preset distance, controlling the cutter to feed to the workpiece at the first speed, wherein the second speed is larger than the first speed.
4. A control method according to claim 3, wherein controlling the tool to feed the workpiece at the first speed comprises:
controlling the tool to start feeding to the workpiece at the first speed after stopping; or,
and controlling the cutter to be decelerated to the first speed and then fed to the workpiece.
5. A control method according to claim 3, wherein the tool is controlled to rotate while being fed toward the workpiece at the first speed; the tool is controlled to not rotate while the tool is being fed to the workpiece at the second speed.
6. A control method according to claim 3, wherein said controlling the auxiliary movement of the tool further comprises:
detecting a second distance between the cutter and a machine tool part, and judging whether the second distance is smaller than a second preset distance;
if the second distance is smaller than the second preset distance, controlling the cutter to stop;
judging whether the cutter is stopped or not;
and if the cutter is not stopped, outputting fault information.
7. The control method of claim 6, wherein the second distance of the tool from the machine tool component comprises a distance of the tool axis from the machine tool component and a distance of the tool radial from the machine tool component.
8. The control method according to claim 1, characterized in that the method further comprises:
and if the real-time feeding speed is smaller than or equal to the preset feeding speed, controlling the cutter to normally execute the machining action.
9. A machine tool comprising a numerical control system, a measurement system and a control system coupled to each other, wherein:
the numerical control system controls the cutter to feed to the workpiece at a first speed;
the measuring system detects the real-time feeding speed of the cutter;
the control system judges whether the real-time feeding speed is lower than the preset feeding speed, and if the real-time feeding speed is higher than the preset feeding speed, a stopping instruction is sent to the numerical control system and fault information is output;
and the numerical control system receives the stopping instruction and controls the cutter to stop moving.
10. A computer-readable storage medium having stored thereon program data, wherein the program data, when executed by a processor, implements the method of controlling a crashworthiness of a machine tool according to any one of claims 1 to 8.
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| CN202310796563.5A CN116690303A (en) | 2023-06-30 | 2023-06-30 | Machine tool anti-collision cutter control method, machine tool and computer readable storage medium |
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| CN202310796563.5A CN116690303A (en) | 2023-06-30 | 2023-06-30 | Machine tool anti-collision cutter control method, machine tool and computer readable storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118143746A (en) * | 2024-05-13 | 2024-06-07 | 广州和兴机电科技有限公司 | Anti-collision control system of numerical control machine tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118143746A (en) * | 2024-05-13 | 2024-06-07 | 广州和兴机电科技有限公司 | Anti-collision control system of numerical control machine tool |
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