An intelligent CNC machine tool with detection and alarm functions

Abstract

The present invention discloses an intelligent CNC machine tool with a detection and alarm function, belonging to the technical field of CNC machine tools, comprising: a CNC machine tool assembly; a visual recognition module, arranged on the front sliding door of the CNC machine tool assembly and used to detect and identify the door opener; an interception and entry alarm module, arranged in the inner cavity of the CNC machine tool assembly and used to detect illegal operations by the door opener and simultaneously issue an alarm and physically intercept; a module for detecting the number of safe operators, connected to the control module in the CNC machine tool assembly via wired or wireless transmission, and used to detect the number of safe operators for on-site maintenance to determine the safe opening and closing of the interception and entry alarm module. The present invention not only strengthens the identity authentication and behavior supervision of operators, but also introduces physical interception and alarm, thereby improving safety.

Description

Technical Field

[0001] The invention belongs to the technical field of numerical control machine tools, in particular to an intelligent numerical control machine tool with a detection and alarm function. Background Art

[0002] With the continuous improvement of industrial automation, CNC machine tools are increasingly used in the manufacturing industry. However, because CNC machine tools often involve high-speed rotating tools, complex mechanical structures, and potentially high-voltage electrical environments, safety issues during operation and maintenance have always been a key concern in the industry. Although existing CNC machine tools are equipped with some basic safety measures, such as emergency stop buttons and protective covers, these measures are often incomplete and have the following major shortcomings.

[0003] When illegal operations occur, existing systems typically only alert operators through audible and visual alarms, but lack effective physical interception measures to prevent further dangerous actions. This can result in an inability to quickly isolate dangerous areas in an emergency, increasing the likelihood of accidents.

[0004] After searching, the existing Chinese patent publication number: CN114535720B is a CNC machine tool, which includes a bed, a main chuck arranged on the bed, and a sub-chuck slidably arranged on the bed. The bed is provided with a cutting mechanism for cutting the workpiece, and the bed is also provided with a pushing assembly for pushing the sub-chuck to move. The main chuck is provided with a mounting groove for accommodating the workpiece, and the sub-chuck is provided with a positioning column extending into the interior of the workpiece, and the positioning column and the mounting groove correspond to each other.

[0005] The cited patent documents also suffer from the same problem. When illegal operations occur, existing systems typically only alert the operator through audible and visual alarms, but lack effective physical interception measures to prevent further dangerous actions. This can result in an inability to quickly isolate the dangerous area in an emergency, increasing the likelihood of accidents. Summary of the Invention

[0006] The purpose of the present invention is to provide an intelligent numerically controlled machine tool with a detection and alarm function to solve the problems raised in the background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: an intelligent CNC machine tool with detection and alarm functions, comprising:

[0008] A CNC machine tool assembly; the CNC machine tool assembly includes a machine tool base and a machine tool outer cover mounted on the top surface of the machine tool base; a control panel is embedded in the front surface of the machine tool outer cover, and a control module is disposed in the control panel;

[0009] A visual recognition module is provided on the front sliding door of the CNC machine tool assembly and is used to detect and identify the person opening the door;

[0010] An interception entry alarm module is provided in the inner cavity of the CNC machine tool assembly and is used to detect illegal operations by the door opener and simultaneously issue an alarm and physically intercept;

[0011] The module for detecting the number of safe operators is connected to the control module in the CNC machine tool assembly through wired or wireless transmission, and the module for detecting the number of safe operators is used to detect the number of safe operators for on-site maintenance to determine the safety opening and closing of the control interception alarm module.

[0012] In this solution, the visual recognition module preferably includes a fingerprint recognition unit provided on the door handle surface of the front sliding door, a facial recognition unit provided on the surface of the front sliding door, and a visual recognition CCD camera provided on the surface of the front sliding door. The control module includes a database of personnel allowed to operate the equipment. When the door opener is directly responsible for the equipment, the fingerprint recognition unit and the facial recognition unit detect and determine through the control module that the person is the directly responsible person in the personnel database. At the same time, the visual recognition CCD camera is used to detect whether the door opener is wearing goggles on his face. If the person is wearing goggles, the electric lock inside the front sliding door is unlocked. If the person is not wearing goggles or is not the directly responsible person, the electric lock of the front sliding door cannot be opened. In addition, when someone who is not the direct person in charge of the equipment but is another person in the personnel database (such as the person in charge or another colleague who has been trained and formally taken up the post to replace the direct person in charge) is operating the equipment, the emergency close button can be pressed, and the emergency close button signal is transmitted to the control module. At the same time, the visual recognition CCD camera is used to identify whether the person opening the door is wearing goggles. If goggles are worn, the control module controls the electric lock to open the front sliding door. If the person is not another person in the personnel database or is not wearing goggles, the control module controls the electric lock not to open the front sliding door.

[0013] In this solution, the visual recognition CCD camera is arranged above the facial recognition unit and located on the surface of the same front sliding door, and an emergency closing button is arranged on one side of the facial recognition unit and on the surface of the front sliding door;

[0014] The visual recognition CCD camera is used to detect whether the door opener is wearing goggles. The fingerprint recognition unit, the face recognition unit, the emergency close button and the visual recognition CCD camera are respectively connected to the control module.

[0015] In this embodiment, the interception entry alarm module includes an infrared detector mounted on the inner wall of the CNC machine tool assembly and a pressure safety monitoring station mounted behind the front sliding door and located within the CNC machine tool assembly. The infrared detector is used to detect the safe distance within which the door opener's body protrudes into the inner cavity of the CNC machine tool assembly, and the control module controls the on / off alarm of an alarm light on top of the CNC machine tool assembly. When the infrared detector detects that the door opener's body has protruded into the inner cavity of the CNC machine tool assembly, the infrared detector transmits a signal to the control module. If the control module determines that the door opener's body has protruded beyond a preset safe distance within the inner cavity of the CNC machine tool assembly, the control module controls the on / off alarm light to flash and buzz. At the same time, the control module controls the floor scale to detect the number of safe operators. When the floor scale detects a safety observer standing on it, it sends a signal to the control module, causing the control module to determine that in addition to the maintenance personnel entering the inner cavity of the CNC machine tool assembly, there is also a safety observer on site. At this time, the control module will not open the electric lifting column, so that the safety interception net remains in its initial position and the alarm light is turned off. The safety observer can observe the situation on site, preventing other personnel from suddenly appearing and suddenly starting the CNC machine tool assembly without knowing it, thereby improving the safety of the maintenance personnel and preventing accidents. When the control module controls the floor scale to detect that there is no safety observer standing on the floor scale, the control module controls the opening of the electric lifting column, so that the electric lifting column drives the safety interception net to descend into the inner cavity of the CNC machine tool assembly and is located in front of the tool to prevent the maintenance personnel from continuing to penetrate the inner cavity of the CNC machine tool assembly. Until the floor scale detects that there is a safety observer standing, the control module controls the electric lifting column to drive the safety interception net to its initial position and turn off the alarm light, allowing the maintenance personnel to penetrate the inner cavity of the CNC machine tool assembly for maintenance.

[0016] This solution is preferred, in which the pressure safety monitoring station is located at the lower part of the inner cavity of the CNC machine tool assembly and is used to detect when the door opener steps into the inner cavity of the CNC machine tool assembly, thereby controlling the two-way warning component and safety interception component in the inner cavity of the CNC machine tool assembly through the control module to perform physical warning and physical interception.

[0017] Preferably, the module for detecting the number of safe operators includes a weighbridge well embedded in the ground in front of the CNC machine tool assembly, a weighbridge member embedded in the weighbridge well, and a detachable manhole cover covering the top of the weighbridge well;

[0018] The floor scale is connected to the control module via a cable.

[0019] Preferably, a monitoring support platform is fixedly installed below the pressure safety monitoring platform and at the lower part of the inner cavity of the CNC machine tool assembly. An elastic downward pressing reset component is provided between the monitoring support platform and the pressure safety monitoring platform. A double-headed screw is horizontally penetrated and connected inside the monitoring support platform. The pressure safety monitoring platform drives the double-headed screw to rotate in the monitoring support platform through a gear rack transmission member.

[0020] Both ends of the double-headed screw are provided with external threaded paths with opposite thread directions, and the circumferential sides of the two external threaded paths are threadedly connected to sliders, and an L-shaped movable column is fixed on the top of each slider, and a warning metal bell is provided on the top of the two L-shaped movable columns;

[0021] Two warning metal bells are located symmetrically on either side of the front sliding door. When the door opener steps on the pressure safety monitoring platform and enters the CNC machine tool assembly, the pressure safety monitoring platform drives the double-headed screw through the rack and pinion transmission, causing the two L-shaped movable columns to move centripetally. The two warning metal bells ring at the door opener's ears on either side as a warning. The warning metal bells provide a physical warning.

[0022] Preferably, a pressure sensor is provided between the monitoring support platform and the pressure safety monitoring platform, the pressure sensor is connected to the control module, and the safety interception component includes a U-shaped bracket fixed to the top of the inner cavity of the CNC machine tool assembly, an electric lifting column fixed to the inner top wall of the U-shaped bracket, and a safety interception net fixed to the bottom lifting end of the electric lifting column.

[0023] This solution is preferred, and first positioning holes are provided at the four corners of the top surface of the pressure safety monitoring platform, and the elastic downward pressure reset component includes a first positioning rod welded at the four corners of the bottom surface of the pressure safety monitoring platform and a first spring sleeved on each first positioning rod, the first positioning rod is inserted into the first positioning hole, and the top end of the first spring is fixed to the bottom surface of the pressure safety monitoring platform.

[0024] Preferably, in this solution, a second positioning hole is further provided on the top surface of the monitoring support platform, a second positioning rod is inserted into the second positioning hole, a second spring is sleeved around the second positioning rod, a top cover is welded to the top end of the second positioning rod and above the second spring, and the pressure sensor is installed on the top surface of the top cover.

[0025] Compared with the prior art, the technical effects and advantages of the present invention are:

[0026] This intelligent CNC machine tool with detection and alarm function integrates the CNC machine tool assembly with multiple security functions (such as identity authentication, physical interception, and number monitoring) to form a highly integrated security management system. By combining biometric recognition, physical interception, and real-time monitoring, it provides comprehensive protection measures from access control to internal activity supervision, significantly improving the overall security level.

[0027] Multi-layer biometric authentication, including fingerprint recognition, facial recognition, and a visual recognition CCD camera, ensures that only authorized personnel can access the CNC machine tool's internal cavity. This multi-layered authentication mechanism significantly enhances security and prevents unauthorized personnel from operating the equipment. Infrared detectors monitor personnel's location in real time and immediately trigger an alarm light when an anomaly is detected, alerting personnel on-site and preventing potential danger.

[0028] The Interception Entry Alarm Module not only sounds an audible and visual alarm but also lowers a safety net via electric lifting columns, physically preventing unauthorized personnel or those who do not meet safety regulations from entering the danger zone. This provides a proactive protection mechanism that does not rely solely on manual intervention.

[0029] The module for checking the number of people on duty uses a floor scale to verify whether there are enough safety observers on site, ensuring that there is always someone supervising the maintenance process, thereby reducing the risk of accidents caused by negligence.

[0030] The technical solution comprehensively upgrades the security of traditional CNC machine tools, not only strengthening the authentication and behavior supervision of operators, but also introducing physical interception and intelligent detection, greatly enhancing the safety, efficiency and reliability of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a structural schematic diagram of the present invention;

[0033] Figure 2 Schematic diagram of the structure of the visual recognition module of the present invention;

[0034] Figure 3 It is a structural schematic diagram of the floor scale component of the present invention;

[0035] Figure 4This is a schematic diagram of the installation structure of the two-way warning component of the present invention;

[0036] Figure 5 A schematic diagram of the connection structure of the safety interception net of the present invention;

[0037] Figure 6 A schematic diagram of the connection structure of the monitoring support platform of the present invention;

[0038] Figure 7 Schematic diagram of the installation structure of the pressure sensor of the present invention;

[0039] Figure 8 It is a structural schematic diagram of the slider component of the present invention.

[0040] Description of reference numerals:

[0041] In the figure: 1. CNC machine tool assembly; 2. Machine tool base; 3. Machine tool outer cover; 4. Warning light; 5. Control panel; 6. Cables; 7. Weighbridge well; 8. Front sliding door; 9. Visual recognition module; 10. Safety interception component;

[0042] 11. Control module; 12. Door handle; 13. Fingerprint recognition unit; 14. Facial recognition unit; 15. Emergency shut-off button; 16. Visual recognition CCD camera; 17. Floor scale; 18. Manhole cover; 19. Crossbeam; 20. Pressure safety monitoring station;

[0043] 21. Infrared detector; 22. Two-way warning assembly; 23. Rectangular opening; 24. U-shaped bracket; 25. Electric lifting column; 26. Safety interception net; 27. Monitoring support platform; 28. First positioning socket; 29. First positioning rod; 30. First spring;

[0044] 31. Through cavity; 32. Rack; 33. Gear; 34. Double-ended screw; 35. L support plate; 36. Slider; 37. External thread; 38. Second positioning jack; 39. Second spring; 40. L movable column;

[0045] 41. Warning metal bell; 42. Sealed bearing; 43. Second positioning rod; 44. Top cover; 45. Pressure sensor; 46. Steel ball; 47. Internal threaded hole; 48. Intercept entry alarm module; 49. Module for detecting the number of safe operating personnel; 50. Security officer facial recognition camera. DETAILED DESCRIPTION

[0046] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0047] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside shown in the figures of the present invention, and are explained here together.

[0048] This embodiment provides Figures 1 to 8 The intelligent CNC machine tool with detection and alarm functions shown includes: a CNC machine tool assembly 1, a visual recognition module 9, an interception and entry alarm module 48, and a module 49 for detecting the number of safe operators.

[0049] In this embodiment, the CNC machine tool assembly 1 includes a machine tool base 2 and a machine tool outer cover shell 3 installed on the top surface of the machine tool base 2; a control panel 5 is embedded in the front surface of the machine tool outer cover shell 3, and a control module 11 is arranged in the control panel 5.

[0050] In this embodiment, the visual recognition module 9 is arranged on the front sliding door 8 of the CNC machine tool assembly 1 and is used to detect and identify the person who opens the door; the visual recognition module 9 verifies the identity of the person who opens the door and whether he is wearing goggles through the fingerprint recognition unit 13, the face recognition unit 14 and the visual recognition CCD camera 16 to ensure that only authorized personnel who meet security requirements can enter.

[0051] In this embodiment, the interception entry alarm module 48 is arranged in the inner cavity of the CNC machine tool assembly 1 and is used to detect illegal operations of the door opener and simultaneously issue an alarm and perform physical interception.

[0052] In this embodiment, the module 49 for detecting the number of safe operators is connected to the control module 11 in the CNC machine tool assembly 1 via wired or wireless transmission. The module 49 is used to detect the number of safe operators for on-site maintenance and to determine whether to control the safety opening and closing of the interception and entry alarm module 48. The control module 11 is a PLC.

[0053] In this embodiment, the visual recognition module 9 includes a fingerprint recognition unit 13 provided on the surface of the door handle 12 of the front sliding door 8, a facial recognition unit 14 provided on the surface of the front sliding door 8, and a visual recognition CCD camera 16 provided on the surface of the front sliding door 8. The control module 11 has a database of personnel who are allowed to operate the equipment. When the door opener is the direct person in charge of the equipment, the fingerprint recognition unit 13 and the facial recognition unit 14 detect and determine through the control module 11 that the person is the direct person in charge in the personnel database. At the same time, the visual recognition CCD camera 16 is used to identify whether the door opener is wearing goggles on his face. If the goggles are worn, the electric lock inside the front sliding door 8 is opened. If the goggles are not worn or it is detected that the person is not the direct person in charge, the electric lock of the front sliding door 8 cannot be opened. Furthermore, if someone who is not the person directly in charge of the equipment but is another person in the personnel database, such as the person in charge or another colleague who has been trained and officially employed to replace the person in charge, can press the emergency close button 15. The emergency close button 15 signal is transmitted to the control module 11. At the same time, the visual recognition CCD camera 16 is used to detect whether the person opening the door is wearing goggles. If so, the control module 11 controls the electric lock of the front sliding door 8 to open. If not, or not, the control module 11 controls the electric lock of the front sliding door 8 not to open. By checking whether the person opening the door is wearing goggles through the visual recognition CCD camera 16, it is ensured that all entrants meet basic safety protection requirements, reducing the risk of injury due to personal negligence.

[0054] In this embodiment, the visual recognition CCD camera 16 is arranged above the facial recognition unit 14 and located on the surface of the same front sliding door 8. An emergency closing button 15 is provided on one side of the facial recognition unit 14 and on the surface of the front sliding door 8.

[0055] The visual recognition CCD camera 16 is used to detect whether the door opener is wearing goggles. The fingerprint recognition unit 13, the facial recognition unit 14, the emergency close button 15 and the visual recognition CCD camera 16 are respectively connected to the control module 11.

[0056] In this embodiment, the interception entry alarm module 48 includes an infrared detector 21 mounted on the inner wall of the CNC machine tool assembly 1 and a pressure safety monitoring station 20 positioned behind the front sliding door 8 and within the CNC machine tool assembly 1. The infrared detector 21 is used to detect the safe distance that the door opener's body has penetrated into the inner cavity of the CNC machine tool assembly 1, and controls the alarm light 4 on the top of the CNC machine tool assembly 1 to turn on and off the alarm through the control module 11. When the infrared detector 21 detects that the door opener's body has penetrated into the inner cavity of the CNC machine tool assembly 1, the infrared detector 21 transmits a signal to the control module 11. If the control module 11 determines that the door opener's body has penetrated beyond a preset safe distance into the inner cavity of the CNC machine tool assembly 1, the control module 11 controls the alarm light 4 to turn on and off to flash and sound an alarm. At the same time, the control module 11 controls the floor scale 17 to detect the number of safe operators. When the floor scale 17 detects that a safety observer is standing on it, it sends a signal to the control module 11, so that the control module 11 determines that in addition to the maintenance personnel entering the inner cavity of the CNC machine tool assembly 1, there is also a safety observer on the scene. At this time, the control module 11 will not open the electric lifting column 25, so that the safety interception net 26 is still in the initial position, and the alarm light 4 is turned off synchronously. The safety observer can observe the situation on the scene to prevent other personnel from suddenly appearing and suddenly starting the CNC machine tool assembly 1 without knowing it, thereby improving the safety of the maintenance personnel and preventing accidents. When the control module 11 controls to detect that there is no safety observer standing on the floor scale 17, the control module 11 controls to open the electric lifting column 25, so that the electric lifting column 25 drives the safety interception net 26 to descend into the inner cavity of the CNC machine tool assembly 1 and is located in front of the tool, which is used to intercept the maintenance personnel's body from continuing to penetrate into the inner cavity of the CNC machine tool assembly 1, until the floor scale 17 detects that there is a safety observer standing, the control module 11 controls the electric lifting column 25 to drive the safety interception net 26 to rise to the initial position, and synchronously turns off the alarm light 4, before allowing the maintenance personnel to penetrate into the inner cavity of the CNC machine tool assembly 1 for maintenance.

[0057] In this embodiment, the pressure safety monitoring platform 20 is located at the lower part of the inner cavity of the CNC machine tool assembly 1 and is used to detect when the door opener steps into the inner cavity of the CNC machine tool assembly 1, thereby controlling the two-way warning component 22 and the safety interception component 10 in the inner cavity of the CNC machine tool assembly 1 through the control module 11 to perform physical warning and physical interception.

[0058] In this embodiment, the module 49 for detecting the number of safe operators includes a weighbridge well 7 embedded in the ground in front of the CNC machine tool assembly 1, a weighbridge member 17 embedded in the weighbridge well 7, and a detachable manhole cover 18 covering the top of the weighbridge well 7;

[0059] The floor scale 17 is connected to the control module 11 via a cable 6 .

[0060] In this embodiment, the two-way warning assembly 22 includes a monitoring support platform 27, an L-shaped movable column 40, and a warning metal bell 41, which is arranged below the pressure safety monitoring platform 20 and fixedly installed at the lower part of the inner cavity of the CNC machine tool assembly 1. An elastic downward pressing reset component is provided between the two monitoring support platforms 27 and the pressure safety monitoring platform 20. A double-headed screw 34 is horizontally penetrated and connected inside the monitoring support platform 27. The pressure safety monitoring platform 20 drives the double-headed screw 34 to rotate in the monitoring support platform 27 through a gear rack transmission member.

[0061] The double-ended screw 34 is provided with external threaded paths 37 with opposite thread directions at both ends. The two external threaded paths 37 are threadedly connected to the sides of the sliders 36. The top of each slider 36 is fixed with an L-shaped movable column 40. The top of each L-shaped movable column 40 is provided with a warning metal bell 41.

[0062] Two warning metal bells 41 are located symmetrically on either side of the front sliding door 8. When the door opener steps on the pressure safety monitoring station 20 and enters the CNC machine tool assembly 1, the pressure safety monitoring station 20 drives the double-headed screw 34 via a gear rack transmission, causing the two L-shaped movable columns 40 to move centripetally. The two warning metal bells 41 ring at the door opener's ears on either side of the door opener. The warning metal bells 41 provide a physical warning.

[0063] In this embodiment, a pressure sensor 45 is also provided between the monitoring support platform 27 and the pressure safety monitoring platform 20. The pressure sensor 45 is connected to the control module 11. The safety interception component 10 includes a U-shaped bracket 24 fixed to the top of the inner cavity of the CNC machine tool assembly 1, an electric lifting column 25 fixed to the inner top wall of the U-shaped bracket 24, and a safety interception net 26 fixed to the bottom lifting end of the electric lifting column 25. When the electric lifting column 25 detects that the door opener steps on the pressure safety monitoring platform 20 to enter the inner cavity of the CNC machine tool assembly 1, the control module 11 controls the floor scale 17 to detect the number of safe operators. When the floor scale 17 detects that a safety observer is standing on it, it sends a signal to the control module 11, so that the control module 11 determines that in addition to the maintenance personnel entering the inner cavity of the CNC machine tool assembly 1, there is also a safety observer on the scene. At this time, the control module 11 will not open the electric lifting column 25, so that the safety interception net 26 is still in the initial position. The safety observer can observe the situation on the scene to prevent other people from suddenly appearing and suddenly starting the CNC machine tool assembly 1 without knowing it, thereby improving the safety of the maintenance personnel and preventing accidents. When the control module 11 controls and detects that there is no safety observer standing on the floor scale 17, the control module 11 controls to open the electric lifting column 25, so that the electric lifting column 25 drives the safety interception net 26 to descend into the inner cavity of the CNC machine tool assembly 1 and is located in front of the tool, which is used to intercept maintenance personnel from entering the inner cavity of the CNC machine tool assembly 1. Until the floor scale 17 detects that there is a safety observer standing, the control module 11 controls the electric lifting column 25 to drive the safety interception net 26 to rise to the initial position, and then allows maintenance personnel to enter the inner cavity of the CNC machine tool assembly 1 for maintenance. The safety interception net 26 is a physical interception. A crossbeam 19 is fixed on the top surface of the machine tool outer cover 3. The top surface of the crossbeam 19 is provided with a rectangular opening 23 for the longitudinal lifting of the safety interception net 26, and a U-shaped bracket 24 is welded to the top surface of the crossbeam 19. The floor scale 17 is located directly in front of the control panel 5. A safety officer facial recognition lens 50 is also provided on the surface of the control panel 5. The safety officer facial recognition lens 50 is used to identify whether the person standing on the floor scale 17 is a person, to prevent other heavy objects from being placed on the floor scale 17 to make up the number, thereby increasing the safety supervision effect.

[0064] In this embodiment, first positioning holes 28 are provided at the four corners of the top surface of the pressure safety monitoring platform 20. The elastic downward-pressing reset component includes first positioning rods 29 welded to the four corners of the bottom surface of the pressure safety monitoring platform 20 and first springs 30 sleeved on each first positioning rod 29. The first positioning rods 29 are inserted into the first positioning holes 28, and the top ends of the first springs 30 are fixed to the bottom surface of the pressure safety monitoring platform 20. When the door opener steps on the pressure safety monitoring platform 20, the pressure safety monitoring platform 20 drives the first positioning rods 29 to descend in the first positioning holes 28, compressing the first springs 30. When the door opener is no longer stepping on the pressure safety monitoring platform 20, the first springs 30 reset the pressure safety monitoring platform 20. A through cavity 31 for installing a rack and gear transmission member is provided on the top surface of the monitoring support platform 27. The rack and gear transmission member includes a rack 32 fixed to the bottom surface of the pressure safety monitoring platform 20 and a gear 33 sleeved on the side of the double-headed screw 34 in the through cavity 31. The rack 32 and the gear 33 are meshed and connected. When the pressure safety monitoring platform 20 is stepped on, the pressure safety monitoring platform 20 presses down the rack 32, so that the rack 32 drives the gear 33 to rotate clockwise, thereby driving the double-headed screw 34 to rotate, and driving the two L-shaped movable columns 40 to move centripetally under the design of the two external threaded tooth paths 37. When the pressure safety monitoring platform 20 loses the stepping force and resets to rise, it drives the rack 32 to rise, so that the rack 32 drives the gear 33 to rotate counterclockwise, driving the double-headed screw 34 to rotate, and driving the two L-shaped movable columns 40 to move backward relative to each other under the design of the two external threaded tooth paths 37. The polished ends of the stud screw 34 are connected to L-shaped support plates 35 via sealed bearings 42. The opposing ends of the two L-shaped support plates 35 are fixed to the outer wall of the monitoring support platform 27. The two sliders 36 are internally provided with internally threaded holes 47 for connection to the externally threaded paths 37. The bottom surface of each slider 36 is rolled with multiple steel balls 46 embedded therein. The steel balls 46 engage the lateral inner bottom wall of the L-shaped support plates 35 in rolling friction. This allows the sliders 36 to move linearly on the L-shaped support plates 35, facilitating smooth movement and preventing jamming. The stud screw 34 is also internally connected to the monitoring support platform 27 via sealed bearings 42, facilitating its rotation.

[0065] In this embodiment, a second positioning hole 38 is further provided on the top surface of the monitoring support platform 27. A second positioning rod 43 is inserted into the second positioning hole 38. A second spring 39 is sleeved around the second positioning rod 43. A top cover 44 is welded to the top of the second positioning rod 43 and above the second spring 39. A pressure sensor 45 is mounted on the top surface of the top cover 44. The height of the second spring 39 is smaller than that of the first spring 30. This means that when the door opener steps on the pressure safety monitoring platform 20, it first compresses the first spring 30 and lowers the rack 32, causing the warning metal bell 41 to sound. Only when the door opener continues to press down and fully steps on the pressure safety monitoring platform 20 will it touch the pressure sensor 45. At this point, the pressure sensor 45 transmits a signal to the control module 11, which then controls the opening and closing of the electric lifting column 25.

[0066] Working principle:

[0067] In this intelligent CNC machine tool with detection and alarm functions, when someone attempts to open the front sliding door 8, the fingerprint recognition unit 13 and facial recognition unit 14 in the visual recognition module 9 will collect the biometric data of the door opener. This data is transmitted to the control module 11 and compared with the pre-stored operator database. If the door opener is the person directly responsible for the equipment or other authorized personnel, further security checks are allowed. The visual recognition CCD camera 16 checks whether the door opener is wearing the necessary protective equipment, such as goggles. If not, the front sliding door 8 will not be opened even if the identity verification is passed.

[0068] When maintenance is required inside a CNC machine tool, the floor scale 17 in the operator safety personnel detection module 49 monitors whether a safety observer is present. This ensures that at least two personnel are present: a maintenance worker performing the task and a safety observer responsible for oversight. The safety observer's facial recognition camera 50 captures the facial image of the person standing on the floor scale 17 and identifies the person through the control module 11 to confirm that the person is indeed a registered safety observer and not an object or other unauthorized person.

[0069] Once the front sliding door 8 is opened, the infrared detector 21 in the CNC machine tool assembly 1 starts working and continuously monitors the position of the maintenance personnel. If the maintenance personnel are too close to a dangerous area such as a tool position, the infrared detector 21 will send a signal to the control module 11.

[0070] When a maintenance worker steps into the CNC machine tool's interior, they step on the pressure safety monitoring platform 20, triggering the mechanical transmission device underneath. This not only triggers a physical alarm—the L-shaped movable column 40 moves centripetally, causing the warning metal bell 41 to ring—but also activates the pressure sensor 45.

[0071] If the control module 11 finds that there is no safety observer present, or the maintenance personnel are too close to the danger zone, the electric lifting column 25 will be activated, driving the safety interception net 26 to descend to the appropriate position to prevent the maintenance personnel from moving forward, and will not rise again until the conditions are met.

[0072] During the whole process, once the warning light 4 and the two-way warning component 22 detect any abnormal situation, the warning light 4 will flash and sound an alarm.

[0073] When the maintenance work is completed, the maintenance personnel leave the CNC machine tool cavity, and the first spring 30 and the second spring 39 on the pressure safety monitoring platform 20 help to restore the original state. At this time, after the control module 11 confirms that all conditions are normal, it allows the front door 8 to close and the system returns to normal.

[0074] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "including an element defined by ... does not exclude the presence of other identical elements in the process, method, article or device that includes the element."

[0075] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent CNC machine tool with detection and alarm function, characterized in that: include: CNC machine tool assembly (1); A visual recognition module (9) is provided on the front sliding door (8) of the CNC machine tool assembly (1) and is used to detect and identify the person opening the door; An interception entry alarm module (48) is arranged in the inner cavity of the CNC machine tool assembly (1) and is used to detect illegal operations by the door opener and simultaneously issue an alarm and physically intercept; A module (49) for detecting the number of safe operators is connected to a control module (11) in a numerically controlled machine tool assembly (1) via wired or wireless transmission, and the module (49) for detecting the number of safe operators for on-site maintenance is used to determine the safety opening and closing of a control and interception alarm module (48); The interception entry alarm module (48) includes an infrared detector (21) arranged on the inner wall of the CNC machine tool assembly (1) and a pressure safety monitoring station (20) arranged behind the front sliding door (8) and located inside the CNC machine tool assembly (1), wherein the infrared detector (21) is used to detect the safety distance of the door opener's body protruding into the inner cavity of the CNC machine tool assembly (1), and controls the alarm light (4) on the top of the CNC machine tool assembly (1) to turn on and off the alarm through the control module (11), and the pressure safety monitoring station (20) is located at the lower part of the inner cavity of the CNC machine tool assembly (1) and is used to detect the door opener stepping into the inner cavity of the CNC machine tool assembly (1), thereby controlling the two-way warning component (22) and the safety interception component (10) in the inner cavity of the CNC machine tool assembly (1) through the control module (11) to perform physical warning and physical interception; A monitoring support platform (27) is fixedly installed below the pressure safety monitoring platform (20) and located at the lower part of the inner cavity of the CNC machine tool assembly (1), and an elastic downward pressing reset component is provided between the monitoring support platform (27) and the pressure safety monitoring platform (20); A double-headed screw (34) is laterally connected to the interior of the monitoring support platform (27), and the pressure safety monitoring platform (20) drives the double-headed screw (34) to rotate in the monitoring support platform (27) through a gear rack transmission member; Both ends of the double-headed screw (34) are provided with external threaded paths (37) with opposite thread directions, and the peripheral sides of the two external threaded paths (37) are threadedly connected to sliders (36), and an L-shaped movable column (40) is fixed to the top of each slider (36), and a warning metal bell (41) is provided on the top of the two L-shaped movable columns (40); The two warning metal bells (41) are arranged on symmetrical sides of the front sliding door (8). When the door opener steps on the pressure safety monitoring platform (20) to enter the CNC machine tool assembly (1), the pressure safety monitoring platform (20) drives the double-headed screw (34) to rotate through the gear rack transmission member, so that the two L-shaped movable columns (40) move centripetally, and the two warning metal bells (41) ring at the ears of the door opener on both sides. A pressure sensor (45) is further provided between the monitoring support platform (27) and the pressure safety monitoring platform (20), and the pressure sensor (45) is connected to the control module (11); The safety interception assembly (10) comprises a U-shaped bracket (24) fixed to the top of the inner cavity of the CNC machine tool assembly (1), an electric lifting column (25) fixed to the inner top wall of the U-shaped bracket (24), and a safety interception net (26) fixed to the bottom lifting end of the electric lifting column (25).

2. The intelligent CNC machine tool with detection and alarm function according to claim 1, characterized in that: The visual recognition module (9) comprises a fingerprint recognition unit (13) arranged on the surface of a door handle (12) of the front sliding door (8), a facial recognition unit (14) arranged on the surface of the front sliding door (8), and a visual recognition CCD camera (16) arranged on the surface of the front sliding door (8).

3. The intelligent CNC machine tool with detection and alarm function according to claim 2, characterized in that: The visual recognition CCD camera (16) is arranged above the facial recognition unit (14) and located on the surface of the same front sliding door (8); an emergency closing button (15) is arranged on one side of the facial recognition unit (14) and located on the surface of the front sliding door (8); The visual recognition CCD camera (16) is used to detect whether the door opener is wearing goggles on his face. The fingerprint recognition unit (13), the facial recognition unit (14), the emergency close button (15) and the visual recognition CCD camera (16) are respectively connected to the control module (11) for transmission.

4. The intelligent CNC machine tool with detection and alarm function according to claim 3, characterized in that: The module (49) for detecting the number of safe operators includes a weighbridge well (7) embedded in the ground in front of the CNC machine tool assembly (1), a weighbridge component (17) embedded in the weighbridge well (7), and a detachable well cover (18) covering the top of the weighbridge well (7); The floor scale component (17) is connected to the control module (11) via a cable (6).

5. The intelligent CNC machine tool with detection and alarm function according to claim 4, characterized in that: The four corners of the top surface of the pressure safety monitoring platform (20) are each provided with a first positioning socket (28); The elastic downward-pressing reset component includes a first positioning rod (29) welded at four corners of the bottom surface of the pressure safety monitoring platform (20) and a first spring (30) sleeved on each first positioning rod (29), the first positioning rod (29) is inserted into the first positioning hole (28), and the top end of the first spring (30) is fixed to the bottom surface of the pressure safety monitoring platform (20).

6. The intelligent CNC machine tool with detection and alarm function according to claim 5, characterized in that: A second positioning socket (38) is further provided on the top surface of the monitoring support platform (27), a second positioning rod (43) is inserted into the second positioning socket (38), and a second spring (39) is sleeved around the circumference of the second positioning rod (43); A top cover (44) is welded to the top of the second positioning rod (43) and located above the second spring (39), and the pressure sensor (45) is installed on the top surface of the top cover (44).

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