Numerical control machining center with good protection effect

Abstract

The utility model discloses a numerical control machining center with good protection effect, including numerical control machining center and install two protective machine door on numerical control machining center, the top front side edge of numerical control machining center is fixedly connected with fixed plate, the outer surface one side of fixed plate is fixedly connected with the casing, the inside installation of casing has electric lifting assembly, the movable end both sides of electric lifting assembly all are fixedly connected with limit baffle, and limit baffle extends to below through the inner bottom wall of casing, and with casing sliding connection, the outer surface one side of casing is equipped with hidden groove. In the utility model, through the detection component perception protective machine door closes, automatic trigger electric lifting assembly drive limit baffle downlink, with lock block and fixed block form forced mechanical locking, and the risk that the protective machine door is opened accidentally in the processing is prevented, thereby eliminating the security risk that the operator exposes in the high -speed cutting dangerous area on the root.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining center technology, and in particular to a CNC machining center with good protection effect. Background Technology

[0002] CNC machining centers are key equipment in modern manufacturing used to complete milling, drilling, tapping, and other processes. Their high-speed rotating spindle drives the cutting tool, generating high-speed flying metal chips and cutting fluid, and posing a risk of accidental breakage of the tool or workpiece. Therefore, most existing CNC machining centers are equipped with an openable and closable safety door in front of the machining area to isolate the hazardous area from the operators during machining.

[0003] However, the safety design of the protective doors in currently widely used CNC machining centers has fundamental flaws. The doors of the vast majority of these machines serve only as simple physical barriers, lacking effective and mandatory mechanical or electrical interlocking devices between the door and the machine tool's main control system. This means that regardless of the machine tool's state (including high-speed spindle rotation and cutting operations), operators can easily open the door from the outside at any time. Although safety regulations strictly prohibit opening the door during machining, violations are extremely common due to the need for convenient mid-process measurements, observations, or cleaning. This renders the protective door completely ineffective at the most critical moments. If a high-speed rotating tool breaks or chips are ejected at extremely high speeds, it will directly cause serious personal injury to the operator, posing a significant safety hazard.

[0004] Therefore, we propose a CNC machining center with good protection. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and to propose a CNC machining center with good protection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a CNC machining center with good protection effect, including a CNC machining center and two protective machine doors installed on the CNC machining center. A fixed plate is fixedly connected to the top front edge of the CNC machining center. A housing is fixedly connected to one side of the outer surface of the fixed plate. An electric lifting assembly is installed inside the housing. Limiting baffles are fixedly connected to both sides of the movable end of the electric lifting assembly. The limiting baffles extend through the inner bottom wall of the housing to the bottom and are slidably connected to the housing.

[0007] A hidden groove is provided on one side of the outer surface of the housing, and a manual drive component is installed together between the hidden groove and the electric lifting component.

[0008] A detection component is fixedly connected to the bottom of the housing;

[0009] Both of the protective doors are fixedly connected to the top with locking blocks.

[0010] Furthermore, heat dissipation holes extending into the interior are provided on both sides of the outer surface of the housing. These holes effectively promote air circulation within the housing and dissipate the heat generated during the operation of the electric lifting assembly.

[0011] Furthermore, the electric lifting assembly includes a servo motor, which is fixedly connected to the inner top of the housing. A screw is fixedly connected to the drive end of the servo motor, and the screw is rotatably connected to the inner bottom wall of the housing. A nut is threaded onto the outer surface of the screw, and a movable plate is fixedly fitted onto the outer surface of the nut. The movable plate is fixedly connected to two limit baffles. The servo motor drives the screw to rotate, thereby causing the nut and the movable plate to perform stable linear motion, thus controlling the lifting position of the two limit baffles and ensuring the reliability and consistency of the mechanical locking and unlocking actions.

[0012] Furthermore, the manual drive component includes a knob, which is disposed in a hidden groove. One end of the knob is fixedly connected to a rotating shaft, which extends through the inner wall of the hidden groove into the interior of the housing and is rotatably connected to the housing. The knob is designed to facilitate manual drive of the rotating shaft.

[0013] Furthermore, a first bevel gear is fixedly connected to the end of the rotating shaft, and a second bevel gear is meshed with the outer surface of the first bevel gear. The second bevel gear is fixedly sleeved on the outer surface of the screw. By using bevel gears for transmission, the direction of rotational motion is changed, converting the horizontal rotation of the manual knob into the vertical rotation of the screw.

[0014] Furthermore, the detection component includes a fixing block, which is fixedly connected to the bottom of the housing. A non-locking tactile switch is fixedly embedded in the middle of both sides of the outer surface of the fixing block. The non-locking tactile switch matches the locking block. As a detection element, the non-locking tactile switch can be accurately triggered by the locking block when the protective door is closed, and automatically reset when the door is opened.

[0015] The beneficial effects of this utility model are:

[0016] When in use, this utility model automatically triggers the electric lifting component to drive the limit baffle downward after the protective door is closed by the detection component, forming a forced mechanical lock with the locking block and the fixing block, thus eliminating the risk of the protective door being accidentally opened during the processing, thereby eliminating the safety hazard of operators being exposed to the dangerous area of ​​high-speed cutting at the source. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0019] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a first-view partial cross-sectional three-dimensional structural schematic diagram of the present invention;

[0021] Figure 4 This is a partial cross-sectional three-dimensional structural diagram from a second perspective of the present invention.

[0022] The attached figures are labeled as follows:

[0023] 1. CNC machining center; 2. Protective door; 3. Housing; 4. Fixing plate; 5. Locking block; 6. Fixing block; 7. Knob; 8. Heat dissipation hole; 9. Limiting baffle; 10. Non-locking tactile switch; 11. Screw; 12. Movable plate; 13. Nut; 14. Servo motor; 15. Hidden groove; 16. Rotating shaft; 17. First bevel gear; 18. Second bevel gear. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-4As shown, a CNC machining center with good protection is disclosed, including a CNC machining center 1 and two protective doors 2 installed on the CNC machining center 1. A fixing plate 4 is fixedly connected to the top front edge of the CNC machining center 1, and a housing 3 is fixedly connected to one side of the outer surface of the fixing plate 4. An electric lifting assembly is installed inside the housing 3. Limiting baffles 9 are fixedly connected to both sides of the movable end of the electric lifting assembly, and the limiting baffles 9 extend through the inner bottom wall of the housing 3 and slide with the housing 3. The electric lifting assembly includes a servo motor 14, and the servo motor 14 is fixedly connected to the inner top of the housing 3. A screw 11 is fixedly connected to the drive end of the servo motor 14. The screw 11 is rotatably connected to the inner bottom wall of the housing 3. A nut 13 is threaded onto the outer surface of the screw 11. A movable plate 12 is fixedly fitted onto the outer surface of the nut 13, and the movable plate 12 is fixedly connected to two limit baffles 9. The screw 11 and the housing 3 are rotatably connected through a bearing seat. The inner ring of the bearing inside the bearing seat is fixedly fitted onto the outer surface of the screw 11. The bearing seat body is fixedly connected to the housing 3. The thread helix angle of the screw 11 is less than the friction angle, which gives the screw 11 a self-locking ability and can prevent it from shifting due to vibration or load. The servo motor 14 is electrically connected to the PLC controller used in the CNC machining center 1, which is beneficial for controlling the operation of the servo motor 14.

[0026] A hidden groove 15 is provided on one side of the outer surface of the housing 3. A manual drive component is installed together between the hidden groove 15 and the electric lifting component. The manual drive component includes a knob 7, which is located in the hidden groove 15. One end of the knob 7 is fixedly connected to a rotating shaft 16, which extends through the inner wall of the hidden groove 15 into the interior of the housing 3 and is rotatably connected to the housing 3. A first bevel gear 17 is fixedly connected to the end of the rotating shaft 16. A second bevel gear 18 is meshed with the outer surface of the first bevel gear 17, and the second bevel gear 18 is fixedly sleeved on the outer surface of the screw 11. The rotating shaft 16 and the housing 3 are rotatably connected through a bearing seat. The inner ring of the bearing inside the bearing seat is fixedly sleeved on the outer surface of the rotating shaft 16, and the seat of the bearing seat is fixedly connected to the housing 3.

[0027] A detection component is fixedly connected to the bottom of the housing 3. The detection component includes a fixing block 6, which is fixedly connected to the bottom of the housing 3. A non-locking tactile switch 10 is fixedly embedded in the middle of both sides of the outer surface of the fixing block 6. The non-locking tactile switch 10 matches the locking block 5. The non-locking tactile switch 10 is a momentary contact type electronic switch. The circuit is turned on and off by pressing with a finger. It automatically resets after the pressure is removed. It is electrically connected to the PLC controller used by the CNC machining center 1 and can receive the signal emitted by the non-locking tactile switch 10.

[0028] Both protective doors 2 are fixedly connected to the top of a locking block 5.

[0029] The outer surface of the housing 3 has heat dissipation holes 8 on both sides that extend into the interior. The heat dissipation holes 8 facilitate the dissipation of heat inside the housing 3 and prevent heat accumulation.

[0030] Working principle: When the operator closes the protective door 2, the locking block 5 fixed on the door moves and presses the non-locking tactile switch 10 fixed at the bottom of the housing 3. After the switch is triggered, the signal is transmitted to the PLC controller of the CNC machining center 1. The PLC controller then starts the servo motor 14, driving the screw 11 to rotate. The nut 13, which is threaded with the screw 11, drives the movable plate 12 and the two limit baffles 9 fixed thereto to move downwards synchronously until the limit baffles 9 descend to one side of the locking block 5, so that the locking block 5 is located between the fixed block 6 and the limit baffles 9, thereby forming a physical barrier that directly blocks and locks the locking block 5, thus fundamentally preventing the protective door 2 from being opened during processing.

[0031] When the protective door 2 needs to be opened in a non-processing state or in case of malfunction, the manual drive component can be operated: turn the knob 7 hidden in the hidden groove 15, drive the first bevel gear 17 to rotate through the rotating shaft 16, and then drive the second bevel gear 18 and the screw 11 that mesh with it to rotate, thereby raising the limit baffle 9 and releasing the mechanical lock on the locking block 5. Only then can the protective door 2 be opened normally.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A CNC machining center with good protective effect, comprising a CNC machining center (1) and two protective machine doors (2) installed on the CNC machining center (1), characterized in that: A fixed plate (4) is fixedly connected to the top front edge of the CNC machining center (1). A housing (3) is fixedly connected to one side of the outer surface of the fixed plate (4). An electric lifting assembly is installed inside the housing (3). Limiting baffles (9) are fixedly connected to both sides of the movable end of the electric lifting assembly. The limiting baffles (9) extend through the inner bottom wall of the housing (3) to the bottom and slide with the housing (3). A hidden groove (15) is provided on one side of the outer surface of the housing (3), and a manual drive component is installed together between the hidden groove (15) and the electric lifting component; A detection component is fixedly connected to the bottom of the housing (3); Locking blocks (5) are fixedly connected to the top of both protective doors (2).

2. The CNC machining center with good protection effect according to claim 1, characterized in that: The outer surface of the housing (3) is provided with heat dissipation holes (8) that extend into the interior on both sides.

3. The CNC machining center with good protection effect according to claim 1, characterized in that: The electric lifting assembly includes a servo motor (14), which is fixedly connected to the inner top of the housing (3). The drive end of the servo motor (14) is fixedly connected to a screw (11), and the screw (11) is rotatably connected to the inner bottom wall of the housing (3). A nut (13) is threaded onto the outer surface of the screw (11), and a movable plate (12) is fixedly fitted onto the outer surface of the nut (13). The movable plate (12) is fixedly connected to two limit baffles (9).

4. A CNC machining center with good protective effect according to claim 3, characterized in that: The manual drive assembly includes a knob (7) and the knob (7) is located in a hidden groove (15). One end of the knob (7) is fixedly connected to a rotating shaft (16), and the rotating shaft (16) extends through the inner wall of the hidden groove (15) to the interior of the housing (3) and is rotatably connected to the housing (3).

5. A CNC machining center with good protective effect according to claim 4, characterized in that: The end of the rotating shaft (16) is fixedly connected to a first bevel gear (17), and the outer surface of the first bevel gear (17) is meshed with a second bevel gear (18), and the second bevel gear (18) is fixedly sleeved on the outer surface of the screw (11).

6. A CNC machining center with good protection effect according to claim 1, characterized in that: The detection component includes a fixing block (6), which is fixedly connected to the bottom of the housing (3). A non-locking tactile switch (10) is fixedly embedded in the middle of both sides of the outer surface of the fixing block (6), and the non-locking tactile switch (10) matches the locking block (5).

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