Intelligent machining center safety protection mechanism

By using a servo motor-driven threaded shaft and bevel gear system, along with a grating sensor, the problem of the front door of the machining center opening arbitrarily during operation has been solved. This has enabled intelligent control of the safety protection mechanism and reduced the safety risks for operators.

CN224464268UActive Publication Date: 2026-07-07东莞市钜辉五金制品有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
东莞市钜辉五金制品有限公司
Filing Date
2025-07-09
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing safety protection mechanisms in machining centers cannot effectively prevent the front door from being opened at will during the operation of the machining center, which poses a safety risk to the operators.

Method used

The door opening and closing is controlled by a servo motor-driven threaded shaft and bevel gear system, combined with a grating sensor and a sliding block structure to ensure that the door will not open arbitrarily during machining center operation, thus increasing the buffer time.

Benefits of technology

The door opening and closing system controlled by a servo motor and the grating sensor prevent the door from being opened arbitrarily during the operation of the machining center, increase the buffer time for starting the motor, and reduce the safety risks of worker misoperation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of intelligent machining center safety protection mechanism, including base, protective frame, front frame and top cover, the upper surface of the base is fixedly connected with protective frame, the inner wall of the protective frame is fixedly connected with front frame, the lower surface of the front frame is fixedly connected with mounting frame, the inner wall of the mounting frame is fixedly connected with servo motor, this intelligent machining center safety protection mechanism, start servo motor, so that threaded shaft rotates, first bevel gear rotates and drives second bevel gear to rotate at this time, so that rotating shaft rotates, with rotating door rotates simultaneously, rotating door slowly rotates and opens, moving door also moves simultaneously with threaded shaft rotating, after moving to rotating door and moving door are both opened, servo motor can be stopped, rotating door and moving door are closed, and servo motor can be started in reverse, because rotating door and moving door need to be started first when being opened, so that it avoids that door can be opened at any time.
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Description

Technical Field

[0001] This utility model relates to the field of machining center technology, and in particular to a safety protection mechanism for intelligent machining centers. Background Technology

[0002] A machining center, also known as a CNC machine tool, is a highly efficient automated machine tool used to process workpieces with complex shapes. It typically consists of a control system, servo system, detection system, mechanical transmission system, and other auxiliary systems. Equipped with a tool magazine and automatic tool changer, a machining center is a CNC machine tool that performs multiple machining operations on a single workpiece clamping.

[0003] Existing safety protection mechanisms in machining centers can prevent broken tool chips from flying out and injuring operators. However, the front door of the machining center is manually controlled and can be opened at any time. This makes it easy for the front door to open without pressing the emergency stop switch during operation, leaving no buffer time. Such operations pose a danger to operators and can easily cause them to be injured. Utility Model Content

[0004] The main purpose of this utility model is to provide a safety protection mechanism for intelligent machining centers, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A safety protection mechanism for an intelligent machining center includes a base, a protective frame, a front frame, and a top cover. The protective frame is fixedly connected to the upper surface of the base, the front frame is fixedly connected to the inner wall of the protective frame, and a mounting frame is fixedly connected to the lower surface of the front frame. A servo motor is fixedly connected to the inner wall of the mounting frame, a threaded shaft is fixedly connected to the output end of the servo motor, a first bevel gear is fixedly connected to the outer surface of the threaded shaft near the servo motor, a mounting block is fixedly connected to the upper surface of the mounting frame, a rotating shaft is rotatably connected to the inner wall of the mounting block, a second bevel gear is fixedly connected to the bottom end of the rotating shaft, a rotating door is fixedly connected to the outer surface of the rotating shaft, and a movable door is threadedly connected to the outer surface of the threaded shaft. The first and second bevel gears are meshed. A grating sensor is fixedly connected to the inner walls of both the front frame and the movable door.

[0007] In order to achieve the effect of limiting the movement of the auxiliary sliding door, as a safety protection mechanism for an intelligent machining center according to this utility model, a limit groove is opened on one side of the front frame, and an inner baffle is fixedly connected to the lower surface of the protective frame.

[0008] In order to achieve the effect of installing the slide and limiting the sliding position of the slide, as a safety protection mechanism for an intelligent machining center according to this utility model, the side of the protective frame is provided with a side groove, and the inner top wall and inner bottom wall of the side groove are provided with sliding grooves.

[0009] In order to achieve the effect of installing the first side door and facilitating its rotation, as a safety protection mechanism for an intelligent machining center according to this utility model, the inner wall of the slide is slidably connected to a slide block, and the outer surface of the slide block is rotatably connected to the first side door.

[0010] In order to achieve the effect of connecting the second side door and facilitating its rotation, as a safety protection mechanism for an intelligent machining center according to this utility model, the inner wall of the first side door is rotatably connected to a central rod, and the outer surface of the central rod is rotatably connected to the second side door.

[0011] In order to facilitate the reset and fixation of the slide, as a safety protection mechanism for an intelligent machining center according to this utility model, a magnetic sheet is fixedly connected to the inner wall of one side of the slide, and a top cover is fixedly connected to the upper surface of the protective frame.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The safety protection mechanism of this intelligent machining center, through the configuration of a base, protective frame, front frame, mounting frame, servo motor, threaded shaft, first bevel gear, second bevel gear, rotating shaft, rotating door, and sliding door, allows the servo motor to be started, causing the threaded shaft to rotate. The rotation of the first bevel gear drives the second bevel gear to rotate, causing the rotating shaft to rotate, which in turn rotates the rotating door. The rotating door slowly rotates and opens, while the sliding door moves simultaneously with the rotation of the threaded shaft. Once both the rotating door and the sliding door are open, the servo motor can be stopped. To close the rotating door and the sliding door, the servo motor is restarted in reverse. Because the servo motor needs to be started before opening the rotating door and the sliding door, it prevents the doors from being opened arbitrarily at any time, increases the buffer time for starting the motor, and prevents the doors from opening immediately. Furthermore, the fact that the doors are not opened immediately reduces the risk of workers accidentally facing a continuously operating machining center, thus minimizing the harm to workers.

[0014] 2. The safety protection mechanism of this intelligent machining center, through the setting of grating sensing devices, adds grating sensing devices on opposite sides between the door frame and the moving door. The function of the safety grating in the grating sensing device is to establish an invisible optical barrier between the operator and the dangerous area through a non-contact safety protection device composed of infrared sensors, thereby ensuring a safe distance between the workers and the machine.

[0015] 3. The safety protection mechanism of this intelligent machining center, through the arrangement of slides, slide blocks, a first side door, a central rod, a second side door, and magnetic plates, has two sets of upper and lower opposing slides in the side grooves on both sides, which facilitates the sliding of the slide blocks. When changing the shape of the side door, the hand is placed in the outer groove of the side door, and the first and second side doors are pulled towards the center and outward, so that the first and second side doors rotate on the slide blocks and the central rod. At the same time, the two corresponding slide blocks also move closer to each other, so that the first and second side doors are in an angled state, forming a triangle with the side of the protective frame. In this way, the status of the processed parts can be viewed from multiple angles during processing, and the safety of viewing is ensured. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a safety protection mechanism for an intelligent machining center according to an embodiment of the present invention;

[0017] Figure 2 This is a bottom-view isometric structural diagram of a safety protection mechanism for an intelligent machining center according to an embodiment of the present invention;

[0018] Figure 3 This is an isometric structural diagram of a safety protection mechanism for an intelligent machining center with the top cover removed, according to an embodiment of this utility model.

[0019] Figure 4 This is an isometric structural diagram of the front frame of a safety protection mechanism for an intelligent machining center according to an embodiment of the present invention;

[0020] Figure 5 This is an exploded structural diagram of the transfer door of a safety protection mechanism in an intelligent machining center according to an embodiment of the present invention;

[0021] Figure 6 This is an exploded structural diagram of the side door in a safety protection mechanism of an intelligent machining center according to an embodiment of the present invention;

[0022] Figure 7 This is an isometric structural diagram of the protective frame in a safety protection mechanism of an intelligent machining center according to an embodiment of the present invention;

[0023] Figure 8 This is an isometric structural diagram of the front frame and grating sensing device in a safety protection mechanism of an intelligent machining center according to an embodiment of the present invention;

[0024] Figure 9 This is an isometric structural diagram of the moving door and grating sensing device in a safety protection mechanism of an intelligent machining center according to an embodiment of the present invention.

[0025] In the diagram: 1. Base; 2. Protective frame; 3. Front frame; 4. Mounting frame; 5. Servo motor; 6. Threaded shaft; 7. First bevel gear; 8. Second bevel gear; 9. Rotating shaft; 10. Rotating door; 11. Sliding door; 12. Limiting groove; 13. Mounting block; 14. Inner baffle; 15. Side groove; 16. Slide groove; 17. Slide seat; 18. First side door; 19. Middle rod; 20. Second side door; 21. Magnet piece; 22. Top cover; 23. Grating sensor. Detailed Implementation

[0026] 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.

[0027] Example

[0028] like Figure 1-9 As shown, a safety protection mechanism for an intelligent machining center includes a base 1, a protective frame 2, a front frame 3, and a top cover 22. The protective frame 2 is fixedly connected to the upper surface of the base 1, the front frame 3 is fixedly connected to the inner wall of the protective frame 2, the mounting frame 4 is fixedly connected to the lower surface of the front frame 3, the servo motor 5 is fixedly connected to the inner wall of the mounting frame 4, the output end of the servo motor 5 is fixedly connected to a threaded shaft 6, a first bevel gear 7 is fixedly connected to the outer surface of the threaded shaft 6 near the servo motor 5, the mounting block 13 is fixedly connected to the upper surface of the mounting frame 4, the inner wall of the mounting block 13 is rotatably connected to a rotating shaft 9, the bottom end of the rotating shaft 9 is fixedly connected to a second bevel gear 8, the outer surface of the rotating shaft 9 is fixedly connected to a rotating door 10, and the outer surface of the threaded shaft 6 is threadedly connected to a movable door 11. The first bevel gear 7 and the second bevel gear 8 are meshed. The inner walls of the front frame 3 and the movable door 11 are both fixedly connected to a grating sensor 23.

[0029] In practical use, the safety protection mechanism is formed by the following components: base 1, protective frame 2, front frame 3, mounting frame 4, servo motor 5, threaded shaft 6, first bevel gear 7, second bevel gear 8, rotating shaft 9, rotating door 10, and sliding door 11. The protective frame 2, front frame 3, and top cover 22 are fixed to the base 1. The front frame 3 and mounting frame 4 are welded together. The first bevel gear 7 is fixed to the unthreaded outer surface of the threaded shaft 6 and close to the servo motor 5. The second bevel gear 8 is fixed to the bottom end of the rotating shaft 9, located above and meshing with the first bevel gear 7. The rotating door 10 is fixed to the rotating shaft 9 and rotates with it. The bottom of the sliding door 11 is located inside the mounting frame 4 and threadedly connected to the threaded end of the threaded shaft 6. When the device is in use, the servo motor is activated. The servo motor 5 rotates the threaded shaft 6, causing the first bevel gear 7 to rotate, which in turn drives the second bevel gear 8 to rotate, causing the rotating shaft 9 to rotate. This causes the rotating door 10 to rotate simultaneously, and the rotating door 10 slowly rotates and opens. The sliding door 11 also moves as the threaded shaft 6 rotates. Once both the rotating door 10 and the sliding door 11 are open, the servo motor 5 can be stopped. To close the rotating door 10 and the sliding door 11, the servo motor 5 can be restarted in reverse. Because the servo motor 5 needs to be started before opening the rotating door 10 and the sliding door 11, the doors are prevented from being opened at will, and the buffer time for starting the motor is increased. Also, since the doors are not opened immediately, the risk of workers directly facing a non-stop machining center due to misoperation is reduced, thus minimizing the harm to workers.

[0030] In this embodiment, a limiting groove 12 is provided on one side of the front frame 3, and an inner baffle 14 is fixedly connected to the lower surface of the protective frame 2.

[0031] In practical use, the movement of the auxiliary sliding door 11 is limited by the setting of the limit groove 12.

[0032] In this embodiment, the protective frame 2 has a side groove 15 on its side, and the inner top wall and inner bottom wall of the side groove 15 are both provided with sliding grooves 16.

[0033] In practical use, the slide block 17 is installed and its sliding position is restricted by the setting of the slide groove 16.

[0034] In this embodiment, a slide block 17 is slidably connected to the inner wall of the slide groove 16, and a first side door 18 is rotatably connected to the outer surface of the slide block 17.

[0035] In practical use, the first side door 18 is installed through the sliding seat 17, which facilitates its rotation.

[0036] In this embodiment, the inner wall of the first side door 18 is rotatably connected to the middle rod 19, and the outer surface of the middle rod 19 is rotatably connected to the second side door 20.

[0037] In practical use, the second side door 20 is connected through the middle rod 19 and can be rotated easily.

[0038] In this embodiment, a magnet 21 is fixedly connected to the inner wall of one side of the slide 17, and a top cover 22 is fixedly connected to the upper surface of the protective frame 2.

[0039] In practical use, the setting of the magnet piece 21, and the fact that the protective frame 2 is made of martensitic stainless steel, makes it easy to reset and fix the slide 17.

[0040] Working principle: When the device is in use, start the servo motor 5 to make the threaded shaft 6 rotate. At this time, the first bevel gear 7 rotates and drives the second bevel gear 8 to rotate, making the rotating shaft 9 rotate. The rotating door 10 rotates at the same time, and the rotating door 10 slowly rotates and opens. The sliding door 11 also moves at the same time as the threaded shaft 6 rotates. After both the rotating door 10 and the sliding door 11 are open, the servo motor 5 can be stopped. To close the rotating door 10 and the sliding door 11, the servo motor 5 can be restarted in reverse.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A safety protection mechanism for an intelligent machining center, comprising a base (1), a protective frame (2), a front frame (3), and a top cover (22), characterized in that: A protective frame (2) is fixedly connected to the upper surface of the base (1). A front frame (3) is fixedly connected to the inner wall of the protective frame (2). A mounting frame (4) is fixedly connected to the lower surface of the front frame (3). A servo motor (5) is fixedly connected to the inner wall of the mounting frame (4). A threaded shaft (6) is fixedly connected to the output end of the servo motor (5). A first bevel gear (7) is fixedly connected to the outer surface of the threaded shaft (6) near the servo motor (5). The upper surface of the mounting frame (4) is fixedly connected to... A mounting block (13) is connected, and a rotating shaft (9) is rotatably connected to the inner wall of the mounting block (13). A second bevel gear (8) is fixedly connected to the bottom end of the rotating shaft (9). A rotating door (10) is fixedly connected to the outer surface of the rotating shaft (9). A movable door (11) is threadedly connected to the outer surface of the threaded shaft (6). The first bevel gear (7) and the second bevel gear (8) are meshed. A grating sensing device (23) is fixedly connected to the inner wall of both the front frame (3) and the movable door (11).

2. The safety protection mechanism for an intelligent machining center according to claim 1, characterized in that: A limiting groove (12) is provided on one side of the front frame (3), and an inner baffle (14) is fixedly connected to the lower surface of the protective frame (2).

3. The safety protection mechanism for an intelligent machining center according to claim 1, characterized in that: The protective frame (2) has a side groove (15) on its side, and the inner top wall and inner bottom wall of the side groove (15) are provided with sliding grooves (16).

4. The safety protection mechanism for an intelligent machining center according to claim 3, characterized in that: The inner wall of the slide (16) is slidably connected to a slide block (17), and the outer surface of the slide block (17) is rotatably connected to a first side door (18).

5. The safety protection mechanism for an intelligent machining center according to claim 4, characterized in that: The inner wall of the first side door (18) is rotatably connected to a middle rod (19), and the outer surface of the middle rod (19) is rotatably connected to a second side door (20).

6. The safety protection mechanism for an intelligent machining center according to claim 4, characterized in that: A magnet (21) is fixedly connected to the inner wall of one side of the slide (17), and a top cover (22) is fixedly connected to the upper surface of the protective frame (2).