Protective mechanism for numerical control machine tool

Abstract

The utility model relates to the technical field of machining, in particular to a protection mechanism for a numerical control machine tool. The trigger assembly comprises a shell, the side surface of the shell is arranged on a partition plate in the machine tool in a sleeving mode, a limiting piece is movably connected into the shell in a sleeving mode, a pressing button is fixedly connected to one side of the limiting piece, one side of the pressing button extends out of the shell, and a first electric piece is fixedly connected to the other side of the limiting piece; a second electric sheet is fixedly connected to the inner wall of one side of the shell, and a first spring is arranged in the shell in a sleeved mode. According to the protection mechanism for the numerical control machine tool, through a pressing button, a second electric piece and a first electric piece, after a protection door moves to a machining area, a coil and a driving motor are powered on, and when the protection door does not move to a designated area, the protection door cannot be powered on, machining operation can be conducted only after the protection door covers the machining area, and therefore safety is improved; the safety risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a protective mechanism for CNC machine tools. Background Technology

[0002] Computer Numerical Control Machine Tools are automated machining equipment controlled by digital programs, featuring high precision, high efficiency, and multitasking capabilities.

[0003] During the machining process of workpieces using CNC machine tools, protective doors are usually installed to isolate the environment from the external environment, thereby avoiding safety risks. In some CNC machine tools, the protective doors are independently designed and can be installed and removed at any time. Taking the CK0632 model as an example, if the protective door is not used properly during the machining process, the equipment will continue to operate even if the protective door is not moved to the machining area, which will cause safety risks. Therefore, we propose a protective mechanism for CNC machine tools. Utility Model Content

[0004] The purpose of this utility model is to provide a protective mechanism for CNC machine tools to solve the safety risk caused by improper use of protective doors during personnel processing, where the equipment continues to operate even when the protective door has not been moved to the processing area. To achieve the above objective, this utility model provides the following technical solution: a protective mechanism for CNC machine tools, comprising the machine tool;

[0005] A triggering assembly includes a housing, the side surface of which is fitted onto a partition inside the machine tool. A limiting piece is movably fitted inside the housing. A pressing button is fixedly connected to one side of the limiting piece, and one side of the pressing button extends out of the housing. A first electric piece is fixedly connected to the other side of the limiting piece. A second electric piece is fixedly connected to the inner wall of one side of the housing. A first spring is fitted inside the housing, and one end of the first spring abuts against one side of the limiting piece by force.

[0006] An electromagnetic component includes a support member, a housing fixedly connected to the top of the support member, a partition fixedly sleeved inside the housing, a magnetic core fixedly connected to the inner wall of the partition and the opposite side of the housing, a coil for generating electromagnetic field sleeved on the side surface of the magnetic core, a limit sleeve fixedly connected to the top of the housing, and a second spring movably sleeved inside the limit sleeve.

[0007] A braking assembly includes a metal sheet made of iron. A movable rod is fixedly connected to one side of the metal sheet, and an armature is fixedly connected to the other side of the movable rod. A connecting rod is fixedly connected to one side of the armature, and a baffle is fixedly sleeved on the side surface of the connecting rod. One side of the baffle abuts against one end of a second spring, and the other side of the armature is in contact with a brake pad by the force of the second spring.

[0008] More preferably, a main shaft is fixedly sleeved on the inner ring surface of the brake pad, and a support frame for support is movably connected to the side surface of the main shaft through a bearing.

[0009] More preferably, a protective door that moves laterally along a track is movably connected to one side of the machine tool, and the protective door pushes a button when it moves to the processing area.

[0010] More preferably, the first electrode is electrically connected to the second electrode, and the second electrode, the coil, and the drive motor for driving the spindle to rotate are connected in series.

[0011] More preferably, the coil is energized to generate electromagnetic force to overcome the force of the second spring and attract the metal sheet.

[0012] In a further preferred embodiment, when the coil is de-energized, the second spring resets to push the armature into contact with the brake pad.

[0013] More preferably, the bottom of the support member is fixedly connected to the support frame, and the armature is arc-shaped.

[0014] More preferably, the main shaft is connected to the output end of the drive motor via a V-shaped transmission wheel and a V-shaped transmission belt.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this invention, by pressing the button, the second electric plate, and the first electric plate, the coil and the drive motor are energized after the protective door moves to the processing area. When the protective door has not moved to the designated area, it cannot be energized, so that the processing operation can only be carried out after the protective door covers the processing area, thereby improving safety and reducing safety risks.

[0017] In this invention, the electromagnetic component and the braking component ensure that when the protective door moves laterally away from the processing area, the electromagnetic force of the coil disappears, and under the action of the second spring, the armature and the brake pad are brought into contact, and the friction force brakes the main shaft, thereby eliminating the inertial force of the main shaft rotation and shortening the rotation caused by the inertia of the main shaft, thus further improving safety. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 3 This is a top view of the structure of this utility model;

[0021] Figure 4 This utility model Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0022] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B;

[0023] Figure 6 This utility model Figure 3 Schematic diagram of the cross-sectional structure at point CC;

[0024] Figure 7 This utility model Figure 6 A magnified structural diagram at point D.

[0025] In the diagram: 1. Machine tool; 2. Triggering assembly; 3. Electromagnetic assembly; 4. Braking assembly; 5. Spindle; 6. Support frame; 7. Protective door; 201. Housing; 202. Press button; 203. Limiting plate; 204. First electric plate; 205. Second electric plate; 206. First spring; 301. Support component; 302. Outer shell; 303. Partition plate; 304. Magnetic core; 305. Coil; 306. Limiting sleeve; 307. Second spring; 401. Metal plate; 402. Movable rod; 403. Armature; 404. Baffle plate; 405. Connecting rod; 406. Brake plate. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-7 This utility model provides a technical solution: a protective mechanism for CNC machine tools, including machine tool 1;

[0028] Trigger assembly 2 includes housing 201. The side surface of housing 201 is sleeved on the partition inside machine tool 1. A limiting piece 203 is movably sleeved inside housing 201. A pressing button 202 is fixedly connected to one side of the limiting piece 203. One side of the pressing button 202 extends out of housing 201. A first electric piece 204 is fixedly connected to the other side of the limiting piece 203. A second electric piece 205 is fixedly connected to the inner wall of one side of housing 201. A first spring 206 is sleeved inside housing 201. One end of the first spring 206 abuts against one side of the limiting piece 203 by force.

[0029] Electromagnetic component 3 includes a support member 301, a housing 302 fixedly connected to the top of the support member 301, a partition 303 fixedly sleeved inside the housing 302, a magnetic core 304 fixedly connected to the inner wall of one side of the partition 303 opposite to the housing 302, a coil 305 for generating electromagnetic field sleeved on the side surface of the magnetic core 304, a limiting sleeve 306 fixedly connected to the top of the housing 302, and a second spring 307 movably sleeved inside the limiting sleeve 306;

[0030] Braking assembly 4 includes a metal sheet 401 made of iron. A movable rod 402 is fixedly connected to one side of the metal sheet 401, and an armature 403 is fixedly connected to the other side of the movable rod 402. A connecting rod 405 is fixedly connected to one side of the armature 403, and a stop plate 404 is fixedly sleeved on the side surface of the connecting rod 405. One side of the stop plate 404 abuts against one end of a second spring 307, and the other side of the armature 403 is held in contact with the brake armature by the force of the second spring 307. When the moving piece 406 is being processed, the protective door 7 needs to be moved laterally to the processing area to block the processing area. When the protective door 7 is moved to its limit position, the side of the protective door 7 pushes against the pressing button 202, so that the force overcomes the force of the first spring 206 until the second electric piece 205 and the first electric piece 204 come into contact. At this time, the coil 305 is energized to generate electromagnetic force, which attracts the metal piece 401, thereby causing the armature 403 to overcome the second spring 307 and move away from the brake. When the brake pad 406 moves, the armature 403 separates from the brake pad 406. Then, the drive motor is started to make the spindle 5 rotate, and subsequent processing can be performed. During the processing, the protective door 7 is accidentally touched. When the protective door 7 moves laterally away from the processing area, the push button 202 is not restrained by the protective door 7. The first spring 206 resets the push button 202 by force. At this time, the second electric plate 205 separates from the first electric plate 204. The drive motor is de-energized and no longer actively drives the spindle 5 to rotate. However, the spindle 5 still rotates under the action of inertia. At the moment when the second electric plate 205 separates from the first electric plate 204, the coil 305 is no longer energized and the electromagnetic force disappears. Under the potential energy accumulated by the second spring 307, the armature 403 is pushed to stick to the brake pad 406 to brake, so that the spindle 5 avoids accumulating rotation under the action of inertia, thereby avoiding safety risks to personnel. The protective door 7, which moves laterally along the track, is movably connected to one side of the machine tool 1. When the protective door 7 moves to the processing area, it pushes against the push button 202.

[0031] In this embodiment, as Figure 2 , Figure 5 and Figure 7 As shown, a main shaft 5 is fixedly sleeved on the inner ring surface of the brake pad 406. A support frame 6 for support is movably connected to the side surface of the main shaft 5 through a bearing. The first electric plate 204 and the second electric plate 205 are electrically connected. The second electric plate 205, the coil 305, and the drive motor for driving the rotation of the main shaft 5 are connected in series. When the coil 305 is energized, it generates electromagnetic force to overcome the force of the second spring 307 to attract the metal plate 401. When the coil 305 is de-energized, the second spring 307 returns to its original position to push the armature 403 to fit against the brake pad 406. The bottom of the support member 301 is fixedly connected to the support frame 6. The armature 403 is arc-shaped. The main shaft 5 is connected to the output end of the drive motor through a V-shaped transmission wheel and a V-shaped transmission belt.

[0032] The usage and advantages of this utility model: The protective mechanism for CNC machine tools operates as follows:

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, during processing, the protective door 7 needs to be moved laterally to the processing area to shield it. When the protective door 7 is moved to its limit position, the side of the protective door 7 pushes against the pressing button 202, causing the force to overcome the force of the first spring 206 until the second electric plate 205 and the first electric plate 204 come into contact. At this time, the coil 305 is energized to generate electromagnetic force, which attracts the metal plate 401, causing the armature 403 to move away from the brake plate 406 against the second spring 307. At this time, the armature 403 separates from the brake plate 406. Then, the drive motor is started to rotate the spindle 5, and subsequent processing operations can be performed. During the processing, the protective door 7 is moved laterally to shield the processing area. When the protective door 7 is accidentally touched and moves laterally away from the processing area, the push button 202 is no longer constrained by the protective door 7. The first spring 206 resets the push button 202 through its force. At this time, the second electric plate 205 separates from the first electric plate 204, and the drive motor is de-energized and no longer actively drives the spindle 5 to rotate. However, the spindle 5 still rotates under the action of inertia. At the moment when the second electric plate 205 separates from the first electric plate 204, the coil 305 is no longer energized, the electromagnetic force disappears, and the potential energy accumulated by the second spring 307 pushes the armature 403 to engage with the brake plate 406 to brake, thereby preventing the spindle 5 from accumulating rotation under the action of inertia and thus avoiding safety risks to personnel.

[0034] 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 preferred examples and are not intended to limit the 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A protective mechanism for CNC machine tools, characterized in that, Including machine tools (1); Trigger assembly (2), the trigger assembly (2) includes a housing (201), the side surface of the housing (201) is sleeved on the partition inside the machine tool (1), a limiting piece (203) is movably sleeved inside the housing (201), a push button (202) is fixedly connected to one side of the limiting piece (203), one side of the push button (202) extends out of the housing (201), a first electric piece (204) is fixedly connected to the other side of the limiting piece (203), a second electric piece (205) is fixedly connected to the inner wall of one side of the housing (201), a first spring (206) is sleeved inside the housing (201), one end of the first spring (206) abuts against one side of the limiting piece (203) by force; An electromagnetic component (3) includes a support member (301), a housing (302) is fixedly connected to the top of the support member (301), a partition (303) is fixedly sleeved inside the housing (302), a magnetic core (304) is fixedly connected to the inner wall of the partition (303) on one side and the side opposite to the housing (302), a coil (305) for generating electromagnetic field is sleeved on the side surface of the magnetic core (304), a limiting sleeve (306) is fixedly connected to the top of the housing (302), and a second spring (307) is movably sleeved inside the limiting sleeve (306); Braking assembly (4), the braking assembly (4) includes a metal sheet (401), the metal sheet (401) is made of iron, a movable rod (402) is fixedly connected to one side of the metal sheet (401), an armature (403) is fixedly connected to the other side of the movable rod (402), a connecting rod (405) is fixedly connected to one side of the armature (403), a baffle (404) is fixedly sleeved on the side surface of the connecting rod (405), one side of the baffle (404) abuts against one end of a second spring (307), and the other side of the armature (403) is attached to a brake pad (406) by the force of the second spring (307).

2. The protective mechanism for CNC machine tools according to claim 1, characterized in that: A main shaft (5) is fixedly sleeved on the inner ring surface of the brake pad (406), and a support frame (6) for support is movably connected to the side surface of the main shaft (5) through a bearing.

3. A protective mechanism for CNC machine tools according to claim 1, characterized in that: A protective door (7) that moves laterally along a track is movably connected to one side of the machine tool (1). When the protective door (7) moves to the processing area, it pushes against the button (202).

4. A protective mechanism for CNC machine tools according to claim 1, characterized in that: The first electrode (204) is electrically connected to the second electrode (205), and the second electrode (205), the coil (305), and the drive motor for driving the spindle (5) to rotate are connected in series.

5. A protective mechanism for CNC machine tools according to claim 1, characterized in that: The coil (305) is energized to generate electromagnetic force to overcome the attraction of the metal sheet (401) by the force of the second spring (307).

6. A protective mechanism for CNC machine tools according to claim 1, characterized in that: When the coil (305) is de-energized, the second spring (307) resets to push the armature (403) into contact with the brake pad (406).

7. A protective mechanism for CNC machine tools according to claim 1, characterized in that: The bottom of the support member (301) is fixedly connected to the support frame (6), and the armature (403) is arc-shaped.

8. A protective mechanism for CNC machine tools according to claim 2, characterized in that: The main shaft (5) is connected to the output end of the drive motor via a V-shaped transmission wheel and a V-shaped transmission belt.

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