Multi-axis numerical control machine tool running state monitoring and alarming device and method

Abstract

The invention discloses a multi-axis numerical control machine tool running state monitoring and alarming device and method, and relates to the technical field of numerical control machine tools, the multi-axis numerical control machine tool running state monitoring and alarming device comprises a first driving device and a second driving device, the second driving device is located on the lower side of the first driving device, the output end of the second driving device is provided with a tool assembly, and the first driving device is controlled and positioned through a system; the second driving device follows the path of the first driving device, a connecting device is connected between the first driving device and the second driving device, the second driving device moves along the connecting device, an angle sensor is arranged on the connecting device, and the second driving device gives an alarm when the moving position deviates. According to the technical scheme, the two moving assemblies are designed, one moving assembly is used for positioning, the other moving assembly is used for following, enough time is provided for detecting positioning, following of the second driving device can be simply controlled, meanwhile, whether the moving path deviates or not can be detected, and therefore the cutter can be well protected, and collision is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of numerically controlled machine tools, and in particular to a device and method for monitoring and alarming the operating status of a multi-axis numerically controlled machine tool. Background Art

[0002] Multi-axis CNC machine tools are highly precise and efficient processing equipment in modern manufacturing. By integrating multiple rotary axes and linear axes, they can complete complex multi-faceted, multi-angle, and multi-process processing tasks on the workpiece in one clamping. This type of machine tool can significantly improve processing accuracy and efficiency, reduce the number of workpiece clamping times and manual intervention, thereby reducing production costs and improving product quality. Multi-axis CNC machine tools are widely used in aerospace, automobile manufacturing, mold production, precision parts processing and other fields. Their flexible programming capabilities and high-precision control systems make the processing of parts with complex shapes and features easier and more accurate, and are important tools to promote the development of manufacturing industry towards intelligence and automation. Machine tool collision prevention technology is a key link in the safe operation and efficient operation of modern CNC machine tools. By integrating advanced sensor systems, real-time monitoring algorithms and intelligent control logic, this technology can accurately sense the position and status of each moving part (such as spindle, tool, workbench, etc.) in the working area of ​​the machine tool, and effectively prevent collision accidents between machine tool parts caused by programming errors, operating errors or mechanical failures. Once a potential collision risk occurs, the anti-collision system will immediately trigger a warning signal, and even automatically adjust the motion trajectory or emergency stop to ensure that the machine tool, tool and workpiece are not damaged, while ensuring the safety of the operator. In addition, the machine tool anti-collision technology also has the ability to self-learn and optimize. It can continuously optimize the collision detection parameters and avoidance strategies based on the data feedback during the actual processing process, and further improve the safety and reliability of the processing process. The application of this technology is of great significance to improving the overall performance of CNC machine tools, reducing the production accident rate and ensuring the continuous and stable operation of the production line.

[0003] However, in the existing technology, it is far from enough to just perform zero-point correction and early warning for anti-collision, and it is not safe enough to just rely on the system's preliminary calculations. It needs to be combined with mechanical anti-collision to achieve better results, and it also requires monitoring and alarm. Summary of the invention

[0004] In view of the above technical problems, the present invention discloses a multi-axis CNC machine tool operation status monitoring and alarm device, including a drive device 1 and a drive device 2, wherein the drive device 2 is located at the lower side of the drive device 1, and a tool assembly is installed at the output end of the drive device 2. The drive device 1 is positioned by system control, and the drive device 2 follows the path of the drive device 1. A connecting device is connected between the drive device 1 and the drive device 2, and the drive device 2 moves along the connecting device. An angle sensor is provided on the connecting device, and an alarm is issued for the deviation of the moving position of the drive device 2. Through the above technical scheme, two sets of moving components are designed, one for positioning and the other for following, so that there is enough time to check the positioning, and the following of the drive device 2 can also be simply controlled, and at the same time, it can check whether the moving path is deviated, thereby protecting the tool well and preventing collision.

[0005] Furthermore, the connecting device includes a short plate, a long plate is fixedly mounted under the short plate, the short plate is hinged to the output end of the driving device 1, a slide groove is arranged on the long plate, a longitudinal axis is arranged in the slide groove, the longitudinal axis slides and rotates in the slide groove, the longitudinal axis is connected to the upper side of the output end of the driving device 2, and the longitudinal lead screw 2 moves along the slide groove. Through the above technical solution, after the driving device 1 moves, the slide groove can form a straight path, allowing the driving device 2 to move, which simplifies the movement plan of the driving device 2 and the tool assembly, makes it less prone to errors during execution, and improves safety.

[0006] Furthermore, a limit plate is fixedly mounted on the longitudinal axis, and the long plate can move between the limit plate and the output end of the second driving device.

[0007] Furthermore, there is a gap between the short board and the long board, and the longitudinal axis is coaxial with the hinge point of the short board when it moves to the lower side of the short board. Through the above technical solution, when the driving device 1 moves up and down, it can also guide and control the movement of the driving device 2, so that the driving device 2 can be guided in each direction of movement, and the movement of the driving device 2 can be monitored and warned at the same time.

[0008] Furthermore, the tool assembly includes a tool shaft, which is fixedly mounted on the lower side of the second output end of the driving device. A plurality of locking blocks are detachably mounted under the tool shaft, the center of the locking block abuts against the tool, and a locking ring is fixedly mounted on the outer side of the locking block.

[0009] Furthermore, a pressure sensor is provided inside the locking block, and a shutdown alarm is triggered when the pressure reaches a preset value. Through the above technical solution, when the tool continues to move horizontally and vertically for processing, inspection can be performed at any time, and pressure will be formed inside the locking block at this time. When the preset pressure value is too large, an alarm can be triggered to shut down the machine. If the alarm fails, the split-design locking block can destroy the locking ring to loosen the tool for protection.

[0010] Furthermore, a plurality of positioning rails are slidably installed on the lower side of the tool shaft, the positioning rails are T-shaped, and positioning pins are arranged on the outer side of the positioning rails. The positioning pins are inserted into the tool shaft and abut against the positioning rails. A chamfer is arranged at the rear end of the tool, and a slope 1 is arranged on the side of the positioning rail close to the axis of the tool shaft, and the slope 1 abuts against the chamfer, and a slope 2 is arranged on the side of the positioning rail.

[0011] Furthermore, a pressure sensor is provided on the first bevel, and when the pressure between the chamfer and the first bevel is too large, the machine stops and an alarm is sounded. With the above technical solution, the tool forms pressure on the first bevel during vertical processing, and an alarm is sounded when the pressure is too large. If the alarm fails, the positioning slide rail slides and destroys the positioning pin, and then the second bevel squeezes the inner side of the locking block and destroys the locking ring. At this time, the tool is loose and can be protected.

[0012] A multi-axis CNC anti-collision warning method comprises the following steps: Step 1: Positioning is performed through drive device 1, and drive device 2 drives the tool assembly to move to the position of drive device 1, wherein the position of drive device 1 is checked for zero point at any time, and the distance between the drive device 1 and the zero point position is checked at any time.

[0013] Step 2: Follow the movement. The driving device 2 drives the tool to move to the lower side of the output end of the driving device 1 and moves to the coaxial axis. During the movement, check whether the side long plate will deflect its position. If deflected, the machine will stop and alarm.

[0014] Step 3: Processing. When the tool assembly is being processed, the pressure sensors on the locking ring and the positioning slide rail will perform pressure detection at any time. When the pressure is too high, the machine will stop and alarm. If a fault occurs, the positioning pin and locking ring will be damaged, and the tool will fall, thus protecting the tool.

[0015] The beneficial effects of the present invention compared with the prior art are: (1) Through the technical solution of the present invention, two sets of moving components are designed, one for positioning and the other for following. There is enough time to check the positioning, and the following of the second driving device can also be simply controlled. At the same time, it can check whether the moving path is deviated, thereby protecting the tool well and preventing collision.

[0016] (2) Through the technical solution of the present invention, after the driving device 1 moves, the slide groove can form a straight path, allowing the driving device 2 to move, thereby simplifying the movement plan of the driving device 2 and the tool assembly, making it less prone to errors during execution and improving safety.

[0017] (3) Through the technical solution of the present invention, when the driving device 1 moves up and down, it can also guide and control the movement of the driving device 2, so that the driving device 2 can be led in each direction of movement, and the movement of the driving device 2 can be monitored and warned at the same time.

[0018] (4) Through the technical solution of the present invention, when the tool continues to move horizontally and vertically for processing, inspection can be carried out at any time. At this time, pressure will be formed on the inside of the locking block. When the pressure value is preset, an alarm can be sounded to shut down the machine when it is too large. If the alarm fails, the split-design locking block can destroy the locking ring to loosen the tool for protection.

[0019] (5) Through the technical solution of the present invention, the tool forms pressure on the inclined surface 1 during vertical processing. If the pressure is too large, an alarm will be sounded. If the alarm fails, the positioning slide rail will slide and damage the positioning pin, and then the inclined surface 2 will squeeze the inner side of the locking block and damage the locking ring. At this time, the tool is loose and can be protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0021] Figure 2 Schematic diagram of a connecting device according to an embodiment of the present invention.

[0022] Figure 3 Schematic diagram of a tool assembly according to an embodiment of the present invention.

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0024] Figure 5 It is a schematic diagram of the local structure of an embodiment of the present invention.

[0025] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0026] Figure 7 Schematic diagram of the structure of a locking block according to an embodiment of the present invention.

[0027] Figure numbers: 1-driving device 1; 2-driving device 2; 3-connecting device; 4-tool assembly; 101-driving frame 1; 102-transverse lead screw 1; 103-transverse slide bar 1; 104-longitudinal slide bar 1; 105-longitudinal slide bar 1; 106-longitudinal lead screw 1; 107-moving block 1; 108-cylinder 1; 109-thread block 1; 110-transverse slide bar 1; 201-driving frame 2; 202-transverse slide bar 2; 203-transverse slide bar 2; 204- Threaded block 2; 205-longitudinal slide bar 2; 206-longitudinal lead screw 2; 207-moving block 2; 208-threaded block 3; 209-cylinder 2; 301-short plate; 302-vertical plate; 303-long plate; 304-slide; 305-limiting plate; 306-longitudinal axis; 401-knife shaft; 402-locking block; 403-knife; 404-locating pin; 405-locating slide rail; 406-rounding; 407-locking ring; 408-inclined surface 1; 409-inclined surface 2. DETAILED DESCRIPTION

[0028] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] like Figure 1-Figure 7 The multi-axis CNC machine tool operation status monitoring and alarm device shown in the figure includes a drive device 1 and a drive device 2. The drive device 2 is located at the lower side of the drive device 1. The output end of the drive device 2 is equipped with a tool assembly 4. The drive device 1 is positioned by system control, and the drive device 2 follows the path of the drive device 1. A connecting device 3 is connected between the drive device 1 and the drive device 2. The drive device 2 moves along the connecting device 3. The connecting device 3 is provided with an angle sensor, and the drive device 2 alarms when the moving position deviates. Through the above technical solution, two sets of moving components are designed, one for positioning and the other for following. There is enough time to check the positioning. The following of the drive device 2 can also be simply controlled, and at the same time, it can check whether the moving path is deviated, thereby protecting the tool well and preventing collision.

[0030] In this embodiment, the driving device 1 includes a driving frame 101, on which a transverse slide bar 103 is fixedly mounted, on which a transverse slider 110 is slidably mounted, on which a transverse lead screw 102 is rotatably mounted, on which the transverse lead screw 102 is driven by a motor, on which a thread block 109 is matched, and a longitudinal lead screw 106 is rotatably mounted between the thread block 109 and the transverse slider 110, on which a moving block 107 is matched, on which a cylinder 108 is fixedly mounted, and on which the output end of the cylinder 108 is the output end of the driving device 1, on which a longitudinal slider 105 is fixedly mounted, and on which the longitudinal slider 105 is slidably mounted on the longitudinal slide bar 104, and the longitudinal slide bar 104 is fixedly mounted on the driving frame 101.

[0031] In this embodiment, the driving device 2 includes a cylinder 209, which is fixedly mounted on the upper side of the driving frame 101, and a driving frame 201 is fixedly mounted below the output end of the cylinder 209. The driving frame 201 slides with the driving frame 101 in the vertical direction. The driving frame 201 is equipped with a thread block 204 and a transverse slide bar 202. The thread block 204 is driven by a motor. The thread block 204 is matched with a thread block 3 208. A transverse slider 203 is slidably mounted on the transverse slide bar 202. A longitudinal slider 205 and a longitudinal lead screw 206 are mounted between the transverse slider 203 and the thread block 3 208. A moving block 207 is slidably mounted on the longitudinal slide bar 205. The moving block 207 cooperates with the longitudinal lead screw 206, and the longitudinal lead screw 206 is driven by a motor.

[0032] In this embodiment, the connecting device 3 includes a short plate 301, a long plate 303 is fixedly installed under the short plate 301, a vertical plate 302 is fixedly installed between the short plate 301 and the long plate 303, the short plate 301 is hinged to the output end of the driving device 1, that is, the short plate 301 is hinged to the cylinder arm of the cylinder 108, and a slide groove 304 is arranged on the long plate 303, and a longitudinal axis 306 is arranged in the slide groove 304, and the longitudinal axis 306 slides and rotates in the slide groove 304, and the longitudinal axis 306 is connected to the upper side of the output end of the driving device 2, that is, the lower end of the longitudinal axis 306 is hinged to the moving block 207, and the longitudinal lead screw 206 moves along the slide groove 304. Through the above technical solution, after the driving device 1 moves, the slide groove 304 can form a straight path, allowing the driving device 2 to move, simplifying the moving scheme of the driving device 2 and the tool assembly 4, making it less prone to errors in execution, and improving safety.

[0033] A limit plate 305 is fixedly mounted on the longitudinal axis 306, and the long plate 303 can move between the limit plate 305 and the output end of the drive device 2. A gap is left between the short plate 301 and the long plate 303, and the longitudinal axis 306 is coaxial with the hinge point of the short plate 301 when it moves to the lower side of the short plate 301. Through the above technical solution, when the drive device 1 moves up and down, it can also guide and control the movement of the drive device 2, so that the drive device 2 can be guided in each direction of movement, and the movement of the drive device 2 can be monitored and warned at the same time. The tool assembly 4 includes a tool shaft 401, which is fixedly mounted on the lower side of the output end of the drive device 2, and a plurality of locking blocks 402 are detachably mounted under the tool shaft 401, and the center of the locking block 402 is abutted against the tool 403, and a locking ring 407 is fixedly mounted on the outer side of the locking block 402. A pressure sensor is arranged on the inner side of the locking block 402, and the pressure reaches a predetermined value and the machine stops and alarms. Through the above technical solution, when the tool 403 continues to move horizontally and vertically for processing, inspection can be carried out at any time. At this time, pressure will be formed on the inside of the locking block 402. The preset pressure value can alarm and shut down when it is too large. If the alarm fails, the split locking block 402 can destroy the locking ring 407 to loosen the tool for protection.

[0034] A plurality of positioning rails 405 are slidably installed on the lower side of the knife shaft 401. The positioning rails 405 are T-shaped. A chamfer 406 is also provided on the locking block 402. The chamfer 406 is T-shaped. A positioning pin 404 is provided on the outer side of the positioning rail 405. The positioning pin 404 is inserted into the knife shaft 401 and abuts against the positioning rail 405. A chamfer 406 is provided at the rear end of the tool 403. A slope 1 408 is provided on the side of the positioning rail 405 close to the axis of the knife shaft 401. The slope 1 408 abuts against the chamfer 406. A slope 2 409 is provided on the side of the positioning rail 405.

[0035] A pressure sensor is provided on the first bevel 408. When the pressure between the chamfer 406 and the first bevel 408 is too large, the machine stops and an alarm is sounded. With the above technical solution, the tool 403 forms pressure on the first bevel 408 during vertical processing. If the pressure is too large, an alarm is sounded. If the alarm fails, the positioning slide rail 405 slides and destroys the positioning pin 404, and then the second bevel 409 squeezes the inner side of the locking block 402 and destroys the locking ring 407. At this time, the tool is loose and can be protected.

[0036] Working principle: Start the drive device 1, the drive device 1 first reaches the zero position for positioning, at this time the drive device 2 also drives the tool assembly 4 to the right lower side of the drive device 2 and also reaches the zero position, then the drive device 1 moves to the first processed position, and then the system is positioned, the positioning at this time meets the predetermined value, during the process, if it is a plane movement without vertical movement, the short plate 301 drives the vertical plate 302 and the long plate 303 to move, at this time the tool 403 and the cylinder 108 are no longer coaxial, then start the drive device 2, the drive device 2 drives the connecting device 3 to move, moves along the slide 304, and performs real-time position monitoring, if the movement deviation at this time will drive the long plate 303 around the short plate 301 The hinge point rotates, and an angle sensor is set on the short plate 301 to monitor the angle change. If there is a change, it will stop working, which means that the position movement of the tool assembly 4 has deviated. When it reaches directly below the cylinder 108, the drive device 2 does not move, and the drive device 1 moves to the next position, and then moves back and forth alternately until the processing is completed. If there is vertical movement, the long plate 303 will also move up and down, and the distance between the limit plate 305 and the long plate 303 will change. The position is also recorded in real time. The vertical movement and the horizontal movement are carried out in two steps. During the processing, the pressure sensor in the connecting device 3 is also checked in real time. If the pressure value is exceeded and the pressure alarm fails, the locking ring 407 will be destroyed, and the tool 403 will be released for protection.

[0037] A multi-axis CNC anti-collision warning method, characterized in that it comprises the following steps: Step 1: Positioning is performed through drive device 1. Drive device 1 reaches the zero position first, and then drive device 2 drives tool assembly 4 to reach the zero position. Drive device 2 drives tool assembly 4 to move toward the position of drive device 1. The position of drive device 1 is checked for zero point at any time, and the distance between the drive device 1 and the zero position is checked at any time.

[0038] Step 2: Follow movement, drive device 2 moves first, drive device 2 drives the tool to move to the lower side of the output end of drive device 1, and moves to the coaxial line. During the movement, check whether the side long plate 303 will deflect. If deflection occurs, the machine will stop and alarm. Drive device 1 moves first, then drive device 1 does not move, and drive device 2 drives the tool assembly 4 to move; then drive device 2 does not move, drive device 1 moves to the next position and stops, and then drive device 2 drives the tool assembly 4 to continue to follow, and repeat this process.

[0039] Step three: Processing. When the tool assembly 4 is processing, the pressure sensors on the locking ring 407 and the positioning slide rail 405 perform pressure detection at any time. When the pressure is too high, the machine will stop and alarm. If a fault occurs, the positioning pin 404 and the locking ring 407 will be damaged, and the tool 403 will fall, thereby protecting the tool 403.

Claims

1. A multi-axis CNC machine tool operation status monitoring and alarm device, characterized in that: The invention comprises a driving device 1 (1) and a driving device 2 (2), wherein the driving device 2 (2) is located at the lower side of the driving device 1 (1), a tool assembly (4) is installed at the output end of the driving device 2 (2), the driving device 1 (1) is positioned by system control, the driving device 2 (2) follows the path of the driving device 1 (1), a connecting device (3) is connected between the driving device 1 (1) and the driving device 2 (2), the driving device 2 (2) moves along the connecting device (3), an angle sensor is arranged on the connecting device (3), and an alarm is issued when the moving position of the driving device 2 (2) deviates.

2. A multi-axis CNC machine tool operation status monitoring and alarm device according to claim 1, characterized in that: The connecting device (3) comprises a short plate (301), a long plate (303) is fixedly mounted below the short plate (301), the short plate (301) is hinged to the output end of the first driving device (1), a slide groove (304) is arranged on the long plate (303), a longitudinal axis (306) is mounted in the slide groove (304), the longitudinal axis (306) slides and rotates in the slide groove (304), the longitudinal axis (306) is connected to the upper side of the output end of the second driving device (2), and the second longitudinal lead screw (206) moves along the slide groove (304).

3. A multi-axis CNC machine tool operation status monitoring and alarm device according to claim 2, characterized in that: A limit plate (305) is fixedly mounted on the longitudinal axis (306), and the long plate (303) is movable between the limit plate (305) and the output end of the second driving device (2).

4. A multi-axis CNC machine tool operation status monitoring and alarm device according to claim 3, characterized in that: A gap is left between the short plate (301) and the long plate (303), and the longitudinal axis (306) is coaxial with the hinge point of the short plate (301) when it moves to the lower side of the short plate (301).

5. A multi-axis CNC machine tool operation status monitoring and alarm device according to claim 4, characterized in that: The tool assembly (4) comprises a tool shaft (401), the tool shaft (401) being fixedly mounted on the lower side of the output end of the second drive device (2), a plurality of locking blocks (402) being detachably mounted under the tool shaft (401), a tool (403) being abutted at the center of the locking block (402), and a locking ring (407) being fixedly mounted on the outer side of the locking block (402).

6. A multi-axis CNC machine tool operation status monitoring and alarm device according to claim 5, characterized in that: A pressure sensor is provided inside the locking block (402), and a shutdown alarm is triggered when the pressure reaches a preset value.

7. A multi-axis CNC machine tool operation status monitoring and alarm device according to claim 6, characterized in that: A plurality of positioning rails (405) are slidably mounted on the lower side of the knife shaft (401), the positioning rails (405) being T-shaped, a positioning pin (404) being arranged on the outer side of the positioning rail (405), the positioning pin (404) being inserted into the knife shaft (401) and abutting against the positioning rail (405), a chamfer (406) being arranged at the rear end of the knife (403), a bevel 1 (408) being arranged on the side of the positioning rail (405) close to the axis of the knife shaft (401), the bevel 1 (408) abutting against the chamfer (406), and a bevel 2 (409) being arranged on the side of the positioning rail (405).

8. A multi-axis CNC machine tool operation status monitoring and alarm device according to claim 7, characterized in that: A pressure sensor is provided on the inclined surface 1 (408), and when the pressure between the chamfer (406) and the inclined surface 1 (408) is too high, the machine will stop and alarm.

9. A multi-axis CNC anti-collision warning method, used in the machine tool as claimed in claim 8, characterized in that: The steps include: Step 1: Positioning is performed by driving device 1 (1), wherein driving device 2 (2) drives the tool assembly (4) to move toward the position of driving device 1 (1), wherein the position of driving device 1 (1) is checked at any time for zero point, and the distance between the driving device 1 (1) and the zero point is checked at any time; Step 2: Follow-up movement, the second drive device (2) drives the tool to move to the lower side of the output end of the first drive device (1) and to be coaxial, and during the movement, it is checked whether the side long plate (303) will deflect in position, and if deflected, the machine will stop and alarm; Step 3: Processing. When the tool assembly (4) is being processed, the pressure sensors on the locking ring (407) and the positioning slide rail (405) are used to detect the pressure at any time. When the pressure is too high, the machine stops and an alarm is sounded. If a fault occurs, the positioning pin (404) and the locking ring (407) are damaged, and the tool (403) falls, thereby protecting the tool (403).

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