CN110900294B - Method for preventing machine collision of numerical control machine tool - Google Patents
Method for preventing machine collision of numerical control machine tool Download PDFInfo
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- CN110900294B CN110900294B CN201911179093.8A CN201911179093A CN110900294B CN 110900294 B CN110900294 B CN 110900294B CN 201911179093 A CN201911179093 A CN 201911179093A CN 110900294 B CN110900294 B CN 110900294B
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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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0078—Safety devices protecting the operator, e.g. against accident or noise
- B23Q11/0089—Safety devices protecting the operator, e.g. against accident or noise actuating operator protecting means, e.g. closing a cover element, producing an alarm signal
Abstract
The invention discloses a method for preventing a machine collision of a numerical control machine tool, which adds a machine collision prevention alarm subprogram to a PMC program of the numerical control machine tool, and specifically comprises the following steps: s1, setting secondary monitoring motion coordinate ranges of an X axis, a Y axis and a Z axis of the numerical control machine tool in the anti-collision machine alarm subprogram; and S2, monitoring the coordinates of an X axis, a Y axis and a Z axis by an anti-collision machine alarm subprogram, sending an alarm signal if any axis exceeds the corresponding secondary monitoring motion coordinate range, wherein the anti-collision machine alarm subprogram is added on the basis of the self soft limit alarm function of the numerical control machine tool, so that the numerical control machine tool can carry out double collision monitoring, reduce collision accidents, reduce damage caused by collision, improve the processing quality and efficiency and prolong the service life of the machine tool.
Description
Technical Field
The invention relates to the technical field of machine tool control, in particular to a method for preventing a numerical control machine tool from colliding.
Background
The existing machine tool has a soft limit alarm, namely the maximum processing travel range of the machine tool exceeds the range, the alarm is given, but the soft limit alarm is not adjustable, if the shape of a processed workpiece is complex, or the shape of a fixed clamp is complex, a cutter is easy to collide with a non-processing area or a clamp of the workpiece in the processing process, even a fixed part in the machine tool generates a collision accident, the collision causes great damage to the machine tool and the workpiece, and the machine tool has abnormal mechanical precision, and a servo shaft mechanical part is damaged, so that the product processing is abnormal.
Disclosure of Invention
The invention aims to provide a method for preventing machine collision of a numerical control machine tool, wherein an anti-collision machine alarm subprogram is added in a PMC program of the numerical control machine tool, secondary monitoring motion coordinate ranges of an X axis, a Y axis and a Z axis can be set according to requirements, an anti-collision machine alarm number is sent out in advance, the anti-collision machine function is improved, and the problems that the anti-collision alarm function of the existing numerical control program or system is single, machine collision accidents are easy to happen, and the machining efficiency is influenced are solved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for preventing machine collision of a numerical control machine tool is characterized in that an anti-collision machine alarm subprogram is added to a PMC program of the numerical control machine tool, and specifically, the method for preventing machine collision comprises the following steps:
s1, setting secondary monitoring motion coordinate ranges of an X axis, a Y axis and a Z axis of the numerical control machine tool in the anti-collision machine alarm subprogram;
s2, monitoring the coordinates of X axis, Y axis and Z axis by the anti-collision machine alarm subprogram, and sending out an alarm signal if any axis exceeds the corresponding secondary monitoring motion coordinate range;
wherein: the anti-collision machine alarm subprogram comprises an XY axis anti-collision machine alarm subprogram and a Z axis anti-collision machine alarm subprogram;
monitoring coordinates of an X axis and a Y axis by an XY axis anti-collision machine alarm subprogram, and sending an alarm signal if any axis exceeds the corresponding secondary monitoring motion coordinate range;
and the alarm subprogram of the Z-axis crash-proof machine monitors the coordinate of the Z-axis, and if the Z-axis exceeds the corresponding secondary monitoring motion coordinate range, an alarm signal is sent out.
From this, PMC procedure adds the anti-collision machine warning subprogram that can carry out the secondary control to XYZ axle, be equivalent to increase a control anticollision function again on original soft limit function's basis, soft limit function is that data machine tool system is inherent and not adjustable, and the anti-collision machine warning subprogram of secondary control can be similar to presume according to the processing needs of difference, improve the anticollision function, reduce the collision accident, reduce the loss that the collision caused, improve processingquality and effect, and can adjust in a flexible way, application scope is wide, the problem that the anticollision alarming function of having solved current numerical control procedure or system is more single, the easy emergence collision accident, influence machining efficiency.
In some embodiments, in step S1, the initial motion coordinate range of each axis of the PMC program of the nc machine tool is selectively set as the secondary monitoring motion coordinate range according to machining and/or collision avoidance requirements.
Therefore, after the initial motion coordinate range is set, the anti-collision machine alarm subprogram can be started to monitor the coordinate position of each axis, if the initial motion coordinate range is not set, namely, the initial default state is still, the anti-collision machine alarm subprogram is not started, an operator can select to close or start according to the conditions of the size and the like of a machined workpiece, for the small-size machined workpiece, the secondary monitoring motion coordinate range is set, the anti-collision machine alarm subprogram is started, the collision accidents are favorably reduced, and the machining efficiency can be improved.
In some embodiments, in step S1, the maximum and minimum values of the secondary monitored motion coordinate ranges of the X, Y, and Z axes are set.
Therefore, the movement range of the secondary monitoring of each axis is set through the maximum value and the minimum value of the coordinates, and the setting mode is simple and convenient.
In some embodiments, in step S2, the XY axis crash proof sub-program can monitor the distance between the machine head and the obstacle on the XY plane of the numerical control machine tool, and send out the warning signal in advance.
Therefore, if the shape of the processed workpiece is complex, only a certain area of the workpiece needs to be processed, or the fixing clamp possibly collides during processing, or the fixing piece in the machine tool is processed, the coordinate range of the alarm subprogram of the XY-axis anti-collision machine is set in the processing area, and when a certain axis exceeds the preset range, whether the certain axis collides with the non-processed workpiece part or the fixing clamp or the fixing piece is checked, so that the collision accident is reduced. Namely, the obstacle or the clamp is not in the preset movement range, when a certain shaft exceeds the preset range, the distance between the machine head and the obstacle or the clamp is shortened, even the machine head is close to a collision machine, an alarm signal is sent at the moment, a technician checks and confirms that the machine collision is not possible, and then the machining is continued.
In some embodiments, in step S2, the Z-axis crash-proof sub-program can monitor the distance between the machine head and the clamp in the Z-axis direction of the numerically-controlled machine tool, and send out an alarm signal in advance.
Therefore, when different workpieces are machined, the clamps are different, the soft limiting alarm function does not have the adjusting function considering the size of the clamps, the collision accident is easy to happen when the size deviation between the clamps is large, the Z-axis collision prevention alarm subprogram can adjust the movement range of the Z axis according to the size of the clamps, and an alarm signal is sent when the movement range exceeds the range, so that the collision accident is reduced. Namely, the clamp is not in the preset movement range, when the Z axis exceeds the preset range, the distance between the machine head and the clamp is shortened, even the machine is close to collision, at the moment, an alarm signal is sent out, a technician checks and confirms, and the machining is continued if the machine collision does not exist.
In some embodiments, in step S2, the operation of the numerical control machine tool is suspended while the alarm signal is issued.
Therefore, the numerical control machine tool is suspended to operate, and subsequent operation technicians can conveniently check the numerical control machine tool.
In some embodiments, the method further comprises step S3: and checking the alarm state by an operation technician, and recovering the operation of the numerical control machine tool after the alarm state is relieved.
Therefore, when the alarm signal is sent, the numerically-controlled machine tool is suspended, the operation technician checks the numerically-controlled machine tool after seeing the alarm signal, and eliminates the alarm state, the numerically-controlled machine tool operates again after the alarm state is relieved, damage caused by machine collision can be effectively reduced, and the machine collision accident is timely handled.
In some embodiments, when the numerical control machine tool runs in an automatic machining state or a manual machining state, the anti-collision machine alarm subprogram monitors coordinates of an X axis, a Y axis and a Z axis, and sends out an alarm signal if any axis exceeds a secondary monitoring motion coordinate range.
Therefore, after the alarm subprogram of the anti-collision machine is in a starting state, the position of each shaft is monitored no matter the numerical control machine is in an automatic machining state or a manual machining state, and an alarm is given when the position exceeds a preset range.
In some embodiments, the anti-collision machine alarm subprogram and the self-contained soft limit alarm function of the numerical control machine tool can independently operate.
Therefore, the anti-collision machine alarm subprogram and the soft limit alarm function can run simultaneously, the two alarm subprograms can monitor and alarm the coordinate position of each shaft independently, and the two alarm subprograms have a synergistic effect, so that the anti-collision machine function is improved, the collision accidents are reduced, the loss caused by collision is reduced, and the processing quality and the processing efficiency are improved.
The invention has the beneficial effects that: adding an anti-collision machine alarm subprogram in the PMC degree of the numerical control machine tool, setting secondary monitoring motion coordinate ranges of an X axis, a Y axis and a Z axis, sending out an anti-collision machine alarm number in advance, improving the function of the anti-collision machine, reducing the collision accident and reducing the damage of the machine tool and a workpiece caused by the collision machine;
the secondary monitoring motion coordinate range can be effectively reduced through the anti-collision machine alarm subprogram, and the secondary monitoring motion coordinate range can be adjusted according to the processing requirements of different workpieces, so that the application range is improved;
the anti-collision machine alarm subprogram can run independently, position coordinates of each shaft are monitored in an automatic machining state and a manual machining state of the machine tool, and the anti-collision machine alarm subprogram and a soft limit alarm function of the numerical control machine tool are used for monitoring each shaft together, so that the anti-collision machine function is greatly improved, the machining quality and the machining efficiency are improved, and the service life of the machine tool is effectively prolonged.
Drawings
Fig. 1 is a block diagram of a method for preventing a crash of a numerically controlled machine tool according to an embodiment of the present invention;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a method for preventing a machine crash of a numerical control machine tool adds a machine crash alarm subroutine to a PMC program of the numerical control machine tool, and specifically, the method for preventing a machine crash is as follows:
s1, setting secondary monitoring motion coordinate ranges of an X axis, a Y axis and a Z axis of the numerical control machine tool in the anti-collision machine alarm subprogram;
s2, monitoring the coordinates of X axis, Y axis and Z axis by the anti-collision machine alarm subprogram, and sending out an alarm signal if any axis exceeds the corresponding secondary monitoring motion coordinate range;
wherein: the anti-collision machine alarm subprogram comprises an XY axis anti-collision machine alarm subprogram and a Z axis anti-collision machine alarm subprogram;
monitoring coordinates of an X axis and a Y axis by an XY axis anti-collision machine alarm subprogram, and sending an alarm signal if any axis exceeds the corresponding secondary monitoring motion coordinate range;
and the alarm subprogram of the Z-axis crash-proof machine monitors the coordinate of the Z-axis, and if the Z-axis exceeds the corresponding secondary monitoring motion coordinate range, an alarm signal is sent out.
To explain, in step S1, the initial motion coordinate range of each axis of the PMC program of the numerical control machine is selectively set as the secondary monitoring motion coordinate range according to the machining and/or collision avoidance requirements.
To explain further, in step S1, the maximum value and the minimum value of the secondary monitored motion coordinate ranges of the X axis, the Y axis, and the Z axis are set.
Further, in step S2, the XY axis crash proof sub-program can monitor the distance change between the machine head and the obstacle on the XY plane of the numerical control machine tool, and send out an alarm signal in advance.
Further, in step S2, the Z-axis crash proof sub-program can monitor the distance change between the machine head and the clamp in the Z-axis direction of the numerically controlled machine tool, and send out an alarm signal in advance.
To explain further, in step S2, the operation of the numerical control machine tool is suspended while the alarm signal is sent.
Further illustratively, the method further includes step S3: and checking the alarm state by an operation technician, and recovering the operation of the numerical control machine tool after the alarm state is relieved.
Further, when the numerical control machine tool operates in an automatic machining state or a manual machining state, the anti-collision machine alarm subprogram monitors coordinates of an X axis, a Y axis and a Z axis, and if any axis exceeds a secondary monitoring motion coordinate range, an alarm signal is sent out.
Further, the anti-collision machine alarm subprogram and the self-contained soft limit alarm power of the numerical control machine can independently operate.
The working principle is as follows:
the numerical control machine tool has a soft limit function, for example, the effective processing stroke of a certain type of numerical control machine tool is X (0, 300), Y (0, -200), and Z (50, -150), that is, the corresponding alarm range is the effective processing stroke range, if the coordinate position of a certain axis in the X, Y, Z axis exceeds the corresponding effective processing stroke, the soft limit function sends an alarm signal, the soft limit function is inherent to the numerical control machine tool and is not adjustable, such a large alarm range is often difficult to achieve effective crash-proof alarm, in order to improve the crash-proof function and reduce single-machine accidents and crash damages, the crash-proof alarm subprogram is added in the PCM program carried by the numerical control machine tool, an alarm range smaller than the alarm range of the soft limit alarm can be set, for example, the secondary monitoring motion range of the crash-proof alarm subprogram is set as X (100, 200) y (-50, -150) and Z (30, -130), thereby sending out an alarm signal in advance and improving the function of the anti-collision machine, and the anti-collision machine alarm subprogram and the soft limit alarm function can be operated independently, and double anti-collision machine alarm monitoring is carried out on the numerical control machine tool, so that the function of the anti-collision machine is further improved.
The anti-collision machine alarming subprogram comprises an XY axis anti-collision machine alarming subprogram and a Z axis anti-collision machine alarming subprogram, wherein the XY axis anti-collision machine alarming subprogram is used for monitoring the positions of an X axis and a Y axis, and sending out an alarming signal when the X axis and the Y axis exceed the preset movement range of secondary monitoring; the Z-axis anti-collision machine alarm subprogram is used for monitoring the position of the Z axis and sending an alarm signal when the position of the Z axis exceeds the motion range of secondary monitoring;
after the alarm is given out, the numerical control machine tool stops running, an operation technician checks and eliminates the condition of collision, and the numerical control machine tool resumes running after the alarm state of collision is relieved.
The secondary monitoring motion coordinates of each axis of the anti-collision machine alarm subprogram can be adjusted according to different processing requirements, obstacles or clamps in a processing area can be effectively excluded from the motion range of secondary monitoring, when a certain axis exceeds the motion range of secondary monitoring, an alarm signal is sent out, an operation technician checks whether collision with the obstacles or the clamps is possible, and if collision does not occur, the alarm state is released.
The anti-collision machine alarm subprogram is added into a PMC program of the numerical control machine tool, the anti-collision machine alarm subprogram is in a closed state when in an initial value state, and after a corresponding motion coordinate range is input into each shaft, the anti-collision machine alarm subprogram is activated and started to start monitoring the position of each shaft. After the alarm subprogram of the anti-collision machine is started, the coordinate position of each shaft can be monitored regardless of whether the numerical control machine tool is processed in an automatic state or a manual state.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept herein, and it is intended to cover all such modifications and variations as fall within the scope of the invention.
Claims (9)
1. A method for preventing machine collision of a numerical control machine tool is characterized in that an anti-collision machine alarm subprogram is added to a PMC program of the numerical control machine tool, and the method for specifically preventing machine collision comprises the following steps:
s1, setting secondary monitoring motion coordinate ranges of an X axis, a Y axis and a Z axis of the numerical control machine tool in the anti-collision machine alarm subprogram;
s2, monitoring the coordinates of X axis, Y axis and Z axis by the anti-collision machine alarm subprogram, and sending out an alarm signal if any axis exceeds the corresponding secondary monitoring motion coordinate range;
wherein: the anti-collision machine alarm subprogram comprises an XY axis anti-collision machine alarm subprogram and a Z axis anti-collision machine alarm subprogram;
monitoring coordinates of an X axis and a Y axis by an XY axis anti-collision machine alarm subprogram, and sending an alarm signal if any axis exceeds the corresponding secondary monitoring motion coordinate range;
and the alarm subprogram of the Z-axis crash-proof machine monitors the coordinate of the Z-axis, and if the Z-axis exceeds the corresponding secondary monitoring motion coordinate range, an alarm signal is sent out.
2. The method of claim 1, wherein in step S1, the secondary monitoring motion coordinate range is selectively set according to the machining and/or collision avoidance requirements for the initial motion coordinate range of each axis of the PMC program of the nc machine tool.
3. The method of claim 2, wherein in step S1, the maximum value and the minimum value of the coordinate range of the second monitoring motion of the X-axis, the Y-axis and the Z-axis are set.
4. The method of claim 1, wherein in step S2, the XY axis crash prevention subroutine monitors the distance between the machine head and the obstacle on the XY plane of the numerically controlled machine tool and sends out an alarm signal in advance.
5. The method of claim 1, wherein in step S2, the Z-axis crash prevention subroutine monitors the distance between the machine head and the clamp in the Z-axis direction of the nc machine tool and sends out an alarm signal in advance.
6. The method for preventing a crash of a numerical control machine tool according to claim 1, 4 or 5, wherein the operation of the numerical control machine tool is suspended while the alarm signal is issued in step S2.
7. The method for preventing a crash of a numerical control machine tool according to claim 1, further comprising step S3: and checking the alarm state by an operation technician, and recovering the operation of the numerical control machine tool after the alarm state is relieved.
8. The method as claimed in claim 1, wherein the crash-proof subroutine monitors coordinates of X-axis, Y-axis and Z-axis when the nc machine tool is operating in the automatic machining state or the manual machining state, and issues an alarm signal if any one of the axes is out of the secondary monitoring motion coordinate range.
9. The method for preventing the machine collision of the numerical control machine tool as claimed in claim 1, wherein the machine collision prevention alarm subprogram and the self-contained soft limit alarm function of the numerical control machine tool can be operated independently.
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| CN113894609B (en) * | 2021-11-11 | 2022-10-14 | 珠海格力智能装备技术研究院有限公司 | Horizontal machining center spindle protection method and device, machine tool and storage medium |
| CN114083325B (en) * | 2021-11-19 | 2022-10-21 | 珠海格力智能装备有限公司 | Method for preventing machine collision of machine tool |
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| DE102013015234A1 (en) * | 2013-09-13 | 2015-03-19 | Liebherr-Verzahntechnik Gmbh | Method for controlling a gear cutting machine and gear cutting machine |
| CN106736824A (en) * | 2015-11-25 | 2017-05-31 | 亚太菁英股份有限公司 | Intelligent anticollision security system and apply its toolroom machine |
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