An automatic tool breakage detection device for machining centers

Abstract

This utility model discloses an automatic tool breakage detection device for a machining center, comprising a machining center body. An operation button is located on the left side of the front of the machining center body, and a display panel is located on the right side of the front of the machining center body. A machining groove is formed on the front of the machining center body, and a lifting hydraulic cylinder is located above the inner wall of the machining groove. This utility model, through the cooperation of a movable frame, a forward and reverse motor, a lead screw, and a nut seat, enables the movable frame to follow the position of the drill bit, ensuring that the infrared transmitter and infrared receiver are always in the appropriate position for tool breakage detection. Once the drill bit breaks, the infrared receiver receives an infrared signal, immediately triggering a buzzer alarm and an alarm light, promptly alerting the operator and preventing continued machining with the broken tool. This effectively improves workpiece machining quality, reduces scrap rate, lowers production costs, increases processing efficiency, and ensures smooth production.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, specifically to an automatic tool breakage detection device for machining centers. Background Technology

[0002] In the machining industry, drilling is an extremely common and crucial process, widely used in the processing of various metal and non-metal materials. Drilling centers, as essential equipment for drilling operations, play an indispensable role in modern manufacturing.

[0003] However, in actual drilling processes, tool breakage or fracture is a frequent and extremely challenging problem. Traditional drilling centers typically lack efficient methods for detecting broken tools. On the one hand, because the protective doors of drilling centers are mostly closed during operation, operators cannot directly observe the real-time condition of the drill bit. Continuing to drill with a broken drill bit can lead to a series of serious adverse consequences. From the perspective of workpiece machining quality, a broken drill bit cannot drill according to the preset precision requirements, resulting in problems such as deviations in hole size, substandard roundness, and non-compliant surface roughness, increasing the scrap rate of workpieces and raising production costs.

[0004] To effectively address the aforementioned problems, this application proposes an innovative in-machine automatic tool breakage detection device for drilling machining centers. By setting an adjustable movable frame that moves with the drill bit, positioning it on the drill bit surface during drilling, an infrared emitter generates infrared light. Normally, the infrared light is blocked by the drill bit. When tool breakage occurs, the infrared receiver receives the infrared light and issues an alarm. This allows for real-time and accurate detection of tool breakage, avoiding unnecessary drilling, workpiece damage, and wasted time, thereby improving drilling efficiency and reducing production costs. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide an automatic tool breakage detection device for machining centers. This device utilizes an infrared transmitter to generate infrared rays, which are normally blocked by the drill bit. When a tool breakage occurs, the infrared receiver receives the infrared rays and issues an alarm. This device can detect tool breakage in real time and accurately, solving the problem that the protective doors of drilling machining centers are mostly closed during operation, making it difficult for operators to directly observe the real-time status of the drill bit.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic tool breakage detection device for a machining center, comprising a machining center body, an operation button on the left side of the front of the machining center body, a display panel on the right side of the front of the machining center body, a machining groove on the front of the machining center body, a lifting hydraulic cylinder above the inner wall of the machining groove, a drilling drive motor fixedly connected to the bottom end of the lifting hydraulic cylinder via a connecting plate, a detachable drill bit fixedly connected to the output end of the drilling drive motor, a fixture mounting plate fixedly connected to the bottom of the inner wall of the machining groove, and mounting holes provided at all four corners of the fixture mounting plate. A movable frame is fitted onto the surface of the drill bit. A forward and reverse motor is fixedly connected to the rear side above the inner wall of the machining groove. A lead screw is fixedly connected to the output end of the forward and reverse motor. The bottom end of the lead screw is rotatably connected to the bottom of the inner wall of the machining groove. A nut seat is threaded onto the surface of the lead screw. The front of the nut seat is fixedly connected to the back of the movable frame. An infrared transmitter is fixedly connected to the front side of the inner wall of the movable frame. An infrared receiver for use with the infrared transmitter is fixedly connected to the rear side of the inner wall of the movable frame. A buzzer alarm and an alarm light are fixedly connected to the left and right sides of the front of the machining center body, respectively. The infrared receiver is electrically connected to the buzzer alarm and the alarm light, respectively.

[0007] As a preferred embodiment of this utility model, sliding sleeves are fixedly connected to both the left and right sides of the movable frame, and guide rods are slidably connected inside the sliding sleeves. The top and bottom ends of the guide rods are fixedly connected to the top and bottom of the inner wall of the processing groove, respectively.

[0008] As a preferred embodiment of this invention, both the infrared transmitter and the infrared receiver are provided with explosion-proof tempered transparent glass covers, and the left and right sides of the explosion-proof tempered transparent glass covers are fixedly connected to the inner wall of the movable frame.

[0009] As a preferred embodiment of this utility model, an energy-absorbing protective plate is fixedly connected to all four sides of the interior of the movable frame, a rubber pad is fixedly connected to the inner side of the energy-absorbing protective plate, and a splash guard is fixedly connected to the top of the movable frame.

[0010] As a preferred embodiment of this utility model, a T-shaped block is fixedly connected to the back of the nut seat, and a sliding groove is provided on the rear side of the inner wall of the processing groove, with the surface of the T-shaped block slidingly connected to the inner wall of the sliding groove.

[0011] As a preferred embodiment of this utility model, the left and right sides of the front of the main body of the machining center are hinged with symmetrically arranged protective doors, and magnetic strips are fixedly connected to the inner sides of the two protective doors, and the inner sides of the two magnetic strips are magnetically connected. An observation groove is opened on the surface of the protective door, and transparent glass is fixedly connected to the inside of the observation groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, through the setting of operation buttons and display panel, facilitates convenient operation and real-time status monitoring of the machining center by operators. The combination of machining groove, lifting hydraulic cylinder, drilling drive motor and drill bit enables efficient and precise drilling. The design of the fixture mounting plate and its mounting holes ensures stable fixation of the workpiece during processing, improving machining accuracy. Crucially, the cooperation of the movable frame, forward and reverse motors, lead screw and nut seat allows the movable frame to follow the drill bit position, keeping the infrared transmitter and infrared receiver in the appropriate position for tool breakage detection. Once the drill bit breaks, the infrared receiver receives the infrared signal and immediately triggers the buzzer alarm and alarm light, promptly reminding the operator to avoid continuing processing with the broken tool. This effectively improves workpiece processing quality, reduces scrap rate, reduces production costs, and simultaneously increases processing efficiency, ensuring smooth production.

[0013] 2. This utility model provides reliable guidance for the movement of the moving frame by setting sliding sleeves on the left and right sides and slidingly connecting them with guide rods. This makes the moving frame more stable as it follows the drill bit, avoiding shaking or deviation. Stable movement ensures the accurate relative position of the infrared transmitter and receiver, thereby improving the accuracy and reliability of broken tool detection. If the moving frame is unstable during movement, it may cause deviations in the transmission and reception of infrared signals, affecting the accuracy of broken tool detection. The sliding sleeves and guide rods effectively solve this problem, further improving the performance of the entire automatic broken tool detection device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the front sectional view of the present invention; Figure 3 This is a schematic diagram of the left sectional view of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of this utility model viewed from below.

[0015] In the diagram: 1. Machining center body; 2. Operation buttons; 3. Display panel; 4. Machining slot; 5. Lifting hydraulic cylinder; 6. Drilling drive motor; 7. Drill bit; 8. Fixture mounting plate; 9. Moving frame; 10. Forward and reverse motor; 11. Lead screw; 12. Nut seat; 13. Infrared transmitter; 14. Infrared receiver; 15. Buzzer alarm; 16. Alarm light; 17. Sliding sleeve; 18. Guide rod; 19. Explosion-proof tempered transparent glass cover; 20. Energy-absorbing protective plate; 21. Rubber pad; 22. Splash guard; 23. T-block; 24. Slide groove; 25. Protective door. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 4 As shown, this utility model provides an automatic tool breakage detection device for a machining center, including a machining center body 1. An operation button 2 is located on the left side of the front of the machining center body 1, and a display panel 3 is located on the right side of the front of the machining center body 1. A machining groove 4 is formed on the front of the machining center body 1. A lifting hydraulic cylinder 5 is located above the inner wall of the machining groove 4. A drilling drive motor 6 is fixedly connected to the bottom of the lifting hydraulic cylinder 5 via a connecting plate. A detachable drill bit 7 is fixedly connected to the output end of the drilling drive motor 6 via a coupling. A fixture mounting plate 8 is fixedly connected to the bottom of the inner wall of the machining groove 4. Mounting holes are formed at the four corners of the fixture mounting plate 8. A movable frame 9 is fitted onto the surface of the drill bit 7. A forward and reverse motor 10 is fixedly connected to the rear side of the upper wall. The output end of the forward and reverse motor 10 is fixedly connected to a lead screw 11 through a reducer. The bottom end of the lead screw 11 is rotatably connected to the bottom of the inner wall of the machining groove 4 through a bearing seat. A nut seat 12 is threadedly connected to the surface of the lead screw 11. The front of the nut seat 12 is fixedly connected to the back of the moving frame 9. An infrared transmitter 13 is fixedly connected to the front side of the inner wall of the moving frame 9. An infrared receiver 14, which works in conjunction with the infrared transmitter 13, is fixedly connected to the rear side of the inner wall of the moving frame 9. A buzzer alarm 15 and an alarm light 16 are fixedly connected to the left and right sides of the front of the machining center body 1, respectively. The infrared receiver 14 is electrically connected to the buzzer alarm 15 and the alarm light 16, respectively.

[0018] refer to Figure 2 Sliding sleeves 17 are fixedly connected to both the left and right sides of the movable frame 9. Guide rods 18 are slidably connected inside the sliding sleeves 17. The top and bottom ends of the guide rods 18 are fixedly connected to the top and bottom of the inner wall of the processing groove 4, respectively.

[0019] As a technical optimization of this utility model, by setting sliding sleeves 17 on the left and right sides of the moving frame 9 and slidingly connecting them with guide rods 18, a reliable guiding effect is provided for the movement of the moving frame 9, making the moving frame 9 more stable during the movement of following the drill bit 7 and avoiding shaking or deviation. Stable movement can ensure the accurate relative position of the infrared transmitter 13 and the infrared receiver 14, thereby improving the accuracy and reliability of the broken tool detection. If the moving frame 9 is unstable during the movement, it may cause deviations in the transmission and reception of infrared signals, affecting the accuracy of broken tool detection. The setting of sliding sleeves 17 and guide rods 18 effectively solves this problem and further improves the performance of the entire automatic broken tool detection device.

[0020] refer to Figure 3 Both the infrared transmitter 13 and the infrared receiver 14 are provided with explosion-proof tempered transparent glass covers 19, and the left and right sides of the explosion-proof tempered transparent glass covers 19 are fixedly connected to the inner wall of the movable frame 9.

[0021] As a technical optimization of this utility model, the explosion-proof tempered transparent glass cover 19 has many beneficial effects. First, the explosion-proof tempered transparent glass cover 19 can provide good protection for the infrared transmitter 13 and the infrared receiver 14, preventing damage from debris, coolant, etc. generated during processing, and extending the service life of these two key detection components. Second, the transparent glass cover does not affect the transmission and reception of infrared rays, ensuring the normal operation of the broken knife detection function.

[0022] refer to Figure 2 Energy-absorbing protective plates 20 are fixedly connected to all four sides of the inside of the movable frame 9. Rubber pads 21 are fixedly connected to the inner side of the energy-absorbing protective plates 20. Splash-proof plates 22 are fixedly connected to the top of the movable frame 9.

[0023] As a technical optimization of this utility model, the energy-absorbing protective plate 20 and rubber pad 21, as well as the splash guard 22 on top, provide important protection. The energy-absorbing protective plate 20 and rubber pad 21 can absorb the vibration and impact forces that may be generated during processing or when the tool breaks, reducing the impact on the infrared transmitter 13 and infrared receiver 14 inside the moving frame 9 and ensuring their normal operation. The splash guard 22 can prevent coolant, debris, etc. generated during processing from splashing into the explosion-proof tempered transparent glass cover 19, avoiding contamination or damage to the detection components, further improving the stability and reliability of the infrared transmitter 13 and infrared receiver 14, thereby improving the performance and service life of the entire automatic tool breakage detection device.

[0024] refer to Figure 3A T-shaped block 23 is fixedly connected to the back of the nut seat 12, and a sliding groove 24 is provided on the rear side of the inner wall of the machining groove 4. The surface of the T-shaped block 23 is slidably connected to the inner wall of the sliding groove 24.

[0025] As a technical optimization of this utility model, by setting a T-shaped block 23 on the back of the nut seat 12 and slidingly connecting it with the groove 24 on the rear side of the inner wall of the machining groove 4, additional stability and guidance are provided for the movement of the nut seat 12. This makes the movement of the nut seat 12 more stable under the drive of the lead screw 11, reducing the possibility of shaking and deviation. The stable movement of the nut seat 12 ensures that the moving frame 9 connected to it accurately follows the movement of the drill bit 7, thereby ensuring the positional accuracy of the infrared transmitter 13 and the infrared receiver 14 and improving the accuracy of the broken tool detection. At the same time, the cooperation between the T-shaped block 23 and the groove 24 can also share some of the force on the nut seat 12, reduce the wear between the lead screw 11 and the nut seat 12, and extend the service life of the device.

[0026] refer to Figure 1 The front of the main body 1 of the machining center has symmetrically arranged protective doors 25 on both the left and right sides, which are hinged by shafts. Magnetic strips are fixedly connected to the inner sides of the two protective doors 25, and the inner sides of the two magnetic strips are magnetically connected. Observation slots are opened on the surface of the protective doors 25, and transparent glass is fixedly connected inside the observation slots.

[0027] As a technical optimization of this utility model, the protective door 25, which is closed by a magnetic strip, and the observation slot with transparent glass on the protective door 25, offers several advantages. The protective door 25 prevents coolant, debris, and other contaminants from splashing out during processing, protecting the operator's safety. It also reduces the impact of noise generated during processing on the surrounding environment. The magnetic strip design makes opening and closing the protective door 25 more convenient and ensures a tight closure. The observation slot and transparent glass allow the operator to observe the processing status inside the processing tank 4 and the condition of the drill bit 7 without opening the protective door 25, enabling timely detection of potential problems.

[0028] The working principle and usage process of this utility model are as follows: During use, the operator first starts the machining center body 1 via operation button 2 and checks the equipment status and parameter settings using the display panel 3. Depending on the workpiece, the required fixture is fixed on the fixture mounting plate 8, and then the workpiece is secured using the fixture. The lifting hydraulic cylinder 5 is activated, causing it to drive the drilling drive motor 6 and drill bit 7 to descend to the appropriate machining position. The drilling drive motor 6 then starts working, driving the drill bit 7 to drill holes in the workpiece. During machining, the forward and reverse motors 10 are activated, driving the moving frame 9 along the surface of the drill bit 7 via the lead screw 11 and nut seat 12. The sliding sleeves 17 on the left and right sides of the moving frame 9 slide on the guide rod 18 to ensure stable movement. The infrared emitter 13 inside the moving frame 9 emits infrared rays. Under normal circumstances, the infrared rays are blocked by the drill bit 7, and the infrared receiver 14 cannot receive the signal. When the drill bit 7 breaks, the infrared light is directly received by the infrared receiver 14. The infrared receiver 14 immediately transmits the signal to the buzzer alarm 15 and the alarm light 16. The buzzer alarm 15 sounds, and the alarm light 16 illuminates, reminding the operator that the drill bit 7 has broken. The operator can observe the processing situation through the observation slot on the protective door 25. If a breakage occurs, processing should be stopped immediately, the drill bit 7 replaced, and operation continued.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic tool breakage detection device for a machining center, comprising a machining center body (1), characterized in that: An operation button (2) is provided on the left side of the front of the machining center body (1), and a display panel (3) is provided on the right side of the front of the machining center body (1). A machining groove (4) is provided on the front of the machining center body (1). A lifting hydraulic cylinder (5) is provided above the inner wall of the machining groove (4). A drilling drive motor (6) is fixedly connected to the bottom of the lifting hydraulic cylinder (5) through a connecting plate. A detachable drill bit (7) is fixedly connected to the output end of the drilling drive motor (6). A clamp mounting plate (8) is fixedly connected to the bottom of the inner wall of the machining groove (4). Mounting holes are provided at the four corners of the clamp mounting plate (8). A moving frame (9) is fitted on the surface of the drill bit (7). A forward and reverse motor is fixedly connected to the rear side above the inner wall of the machining groove (4). 10), the output end of the forward and reverse motor (10) is fixedly connected to a lead screw (11), the bottom end of the lead screw (11) is rotatably connected to the bottom of the inner wall of the processing groove (4), the surface of the lead screw (11) is threadedly connected to a nut seat (12), the front of the nut seat (12) is fixedly connected to the back of the moving frame (9), the front side of the inner wall of the moving frame (9) is fixedly connected to an infrared transmitter (13), the rear side of the inner wall of the moving frame (9) is fixedly connected to an infrared receiver (14) used in conjunction with the infrared transmitter (13), the left and right sides of the front of the main body of the processing center (1) are respectively fixedly connected to a buzzer alarm (15) and an alarm light (16), and the infrared receiver (14) is electrically connected to the buzzer alarm (15) and the alarm light (16) respectively.

2. The automatic tool breakage detection device for a machining center according to claim 1, characterized in that: The left and right sides of the movable frame (9) are fixedly connected with sliding sleeves (17), and the inside of the sliding sleeves (17) is slidably connected with guide rods (18). The top and bottom ends of the guide rods (18) are fixedly connected to the top and bottom of the inner wall of the processing groove (4), respectively.

3. The automatic tool breakage detection device for a machining center according to claim 2, characterized in that: Both the infrared transmitter (13) and the infrared receiver (14) are provided with explosion-proof tempered transparent glass covers (19), and the left and right sides of the explosion-proof tempered transparent glass covers (19) are fixedly connected to the inner wall of the movable frame (9).

4. The automatic tool breakage detection device for a machining center according to claim 3, characterized in that: The movable frame (9) is fixedly connected to an energy-absorbing protective plate (20) on all four sides. A rubber pad (21) is fixedly connected to the inner side of the energy-absorbing protective plate (20). A splash guard (22) is fixedly connected to the top of the movable frame (9).

5. The automatic tool breakage detection device for a machining center according to claim 4, characterized in that: A T-shaped block (23) is fixedly connected to the back of the nut seat (12), and a sliding groove (24) is provided on the rear side of the inner wall of the processing groove (4). The surface of the T-shaped block (23) is slidably connected to the inner wall of the sliding groove (24).

6. The automatic tool breakage detection device for a machining center according to claim 5, characterized in that: The machining center body (1) has symmetrically arranged protective doors (25) hinged on both sides of the front. The inner sides of the two protective doors (25) are fixedly connected with magnetic strips, and the inner sides of the two magnetic strips are magnetically connected. The surface of the protective door (25) is provided with an observation groove, and the inside of the observation groove is fixedly connected with transparent glass.

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