Emergency protection device for numerical control machine tool manufacturing

Abstract

The invention discloses an emergency protection device for numerically-controlled machine tool manufacturing, and belongs to the field of numerically-controlled machine tool emergency protection. The emergency protection device comprises a numerically-controlled machine tool main body, a speed reduction mechanism is installed in the numerically-controlled machine tool main body, and a protection mechanism is installed in the numerically-controlled machine tool main body and close to the speed reduction mechanism; the speed reduction mechanism comprises two arc-shaped abutting plates which are symmetrically connected to the interior of the numerical control machine tool body in a sliding mode, and abutting springs are fixedly connected to the four corners of the outer arc face of each arc-shaped abutting plate. Through cooperative use of the devices, an electromagnetic coil is powered on through a control panel, so that a limiting plate is attracted through magnetic force of the electromagnetic coil, the limiting plate is separated from an elastic plate, an arc-shaped abutting plate and the elastic plate move downwards, the elastic plate is attached to a main shaft, and when the main shaft rotates through inertia, the elastic plate is tightly attached to the main shaft; the elastic plate rubs with the main shaft through the elastic force of the abutting spring, the rotating resistance of the main shaft is increased, and therefore the main shaft can stop rotating more quickly.

Description

Technical Field

[0001] The invention relates to the technical field of emergency protection of numerically controlled machine tools, in particular to an emergency protection device for manufacturing numerically controlled machine tools. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool, which is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, express them in coded numbers, and input them into the CNC device through information carriers. After calculation and processing, the CNC device sends various control signals to control the movement of the machine tool, and automatically processes parts according to the shape and size required by the drawing. When using CNC machine tools, emergency protection measures are usually required.

[0003] When most CNC machine tools are in use, parts are processed by milling cutters. When the milling cutter contacts the part, the milling cutter will vibrate, which will cause the spindle of the CNC machine tool to vibrate, affecting the accuracy of the milling cutter processing the part. When the vibration amplitude of the spindle is too large, the CNC machine tool needs to be shut down in time through the emergency protection device used in CNC machine tool manufacturing. However, after the CNC machine tool is shut down, the spindle cannot stop rotating in time due to inertia, causing the milling cutter to rotate synchronously. If the part and the milling cutter are not separated in time, it may cause wear of the milling cutter or damage to the part.

[0004] Therefore, the present invention provides an emergency protection device for numerically controlled machine tool manufacturing to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The present invention provides an emergency protection device for CNC machine tool manufacturing, aiming to solve the problem in the background technology that after the existing CNC machine tool is turned off, the spindle cannot stop rotating in time due to inertia, so that the milling cutter rotates synchronously. When the parts and the milling cutter are not separated in time, the milling cutter may be worn or the parts may be damaged.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solution: an emergency protection device for CNC machine tool manufacturing, the emergency protection device comprising a CNC machine tool body, a speed reduction mechanism installed inside the CNC machine tool body, and a protection mechanism installed inside the CNC machine tool body near the speed reduction mechanism;

[0009] The deceleration mechanism comprises two arc-shaped clamping plates slidably connected to the inside of the CNC machine tool body in a symmetrical manner, the four corners of the outer arc surface of the arc-shaped clamping plate are fixedly connected with clamping springs, the middle part of the outer arc surface of the arc-shaped clamping plate is symmetrically fixedly connected with a secondary rod, the surface of the secondary rod is slidably sleeved with a main rod, the inner arc surface of the arc-shaped clamping plate is fixedly connected with an elastic plate, both sides of the inner arc surface of the elastic plate are fitted with a limit plate, and the two edges of one side of the limit plate are fixedly connected with a spring assembly;

[0010] The deceleration mechanism further comprises four electromagnetic coils installed in a rectangular array inside the main body of the CNC machine tool, the four electromagnetic coils respectively correspond to the four limit plates, and the spring assembly is fixedly connected to the corresponding electromagnetic coils;

[0011] The emergency protection device also includes a linkage mechanism installed on the surface of the main rod;

[0012] The clamping mechanism is installed on the surface of the protective mechanism.

[0013] As a preferred technical solution of the present application, the CNC machine tool body includes a CNC machine tool shell, an inner wall of the CNC machine tool shell is fixedly connected to a driving block, one side of the driving block is rotatably connected to a main shaft corresponding to two arc-shaped clamping plates, the arc-shaped clamping plates are slidingly connected to the driving block, one end of the clamping spring is fixedly connected to the driving block, and the main rod is fixedly connected to the driving block.

[0014] As a preferred technical solution of the present application, the CNC machine tool body also includes a control panel fixedly connected to the surface of the CNC machine tool shell and electrically connected to the electromagnetic coil through a wire. A protective door is slidably connected to one side of the CNC machine tool shell, and the limit plate is slidably connected to the drive block.

[0015] As a preferred technical solution of the present application, the protective mechanism includes an annular groove opened on one side of the driving block and corresponding to the main shaft, and arc blocks are installed on both sides of the annular groove, one of the arc blocks is fixedly connected to the inside of the annular groove, and the other arc block is slidably connected to the inside of the annular groove, and one side of the arc block is rotatably connected to a protective plate corresponding to the main shaft through a pin shaft.

[0016] As a preferred technical solution of the present application, the clamping mechanism includes a clamping block slidably connected to the inner wall of the annular groove, one side of the clamping block is fixedly connected to an elastic rod fixedly connected to the driving block, a flip plate rotatably connected to the inside of the driving block through a rotating shaft is attached to the surface of the clamping block, and one side of the flip plate is attached to a pressing rod slidably connected to the driving block;

[0017] The clamping mechanism also includes a locking block which is fixedly connected to the surface of another arc-shaped block and corresponds to the clamping block.

[0018] As a preferred technical solution of the present application, the linkage mechanism includes two rotating rods symmetrically connected to the inside of the driving block, and both ends of the rotating rods are fixedly connected to driving gears, wherein the surfaces of the two driving gears are meshed with driving tooth plates slidably connected to the surface of the main rod, and one side of the two driving tooth plates is respectively fixedly connected to the corresponding auxiliary rods.

[0019] As a preferred technical solution of the present application, the linkage mechanism also includes a linkage gear meshing with the other two driving gears, the surface of the linkage gear is meshed with a linkage tooth plate slidingly connected to the driving block, one side of the linkage tooth plate is fixedly connected to a linkage rod slidingly connected to the driving block, and one side of the two linkage rods is rotatably connected to the corresponding protective plates through pins.

[0020] As a preferred technical solution of the present application, sliding grooves corresponding to the linkage rods are provided on opposite sides of the two protective plates, guide grooves are provided on the surfaces of the driving tooth plates, and the interior of the guide grooves is slidably connected to limit rods fixedly connected to the main rods.

[0021] (III) Beneficial effects

[0022] 1. Through the arrangement of the deceleration mechanism, the protection mechanism, the linkage mechanism and the clamping mechanism and other structures, when the main shaft generates a large vibration, the power supply of the CNC machine tool is disconnected through the control panel, so that the driving source no longer drives the main shaft, and the electromagnetic coil is energized through the control panel, so that the limit plate is adsorbed by the magnetic force of the electromagnetic coil, so that the limit plate and the elastic plate are separated, and the elastic force of the clamping spring is used to make the arc-shaped clamping plate and the elastic plate move downward, so that the elastic plate and the main shaft are fitted, so that when the main shaft rotates by inertia, the elastic plate rubs against the main shaft by the elastic force of the clamping spring, increasing the resistance to the rotation of the main shaft, so that the main shaft stops rotating more quickly, avoiding the wear of the milling cutter or damage to the parts caused by the inertial rotation of the main shaft when the parts and the milling cutter are not separated in time, and the arc-shaped clamping plate will not be offset through the mutual cooperation of the main rod and the auxiliary rod, so that the fitting surface of the main shaft and the elastic plate is maximized, and the friction force of the arc-shaped clamping plate and the elastic plate on the main shaft is avoided to be reduced;

[0023] 2. Through the arrangement of the deceleration mechanism, the protection mechanism, the linkage mechanism and the clamping mechanism, when the arc-shaped abutting plate moves downward, the auxiliary rod is driven to move downward synchronously, so that the driving gear plate moves along with it. Through the arrangement of the two driving gears, one of the driving gears meshes and rotates, driving the rotating rod and the other driving gear to rotate, so that the linkage gear and the linkage gear plate drive the linkage rod to move, pulling one side of the two protection plates closer to each other, thereby isolating the milling cutter at one end of the spindle to prevent the milling cutter from fitting with the processed parts and causing damage to the parts or wear of the milling cutter;

[0024] 3. Through the arrangement of the speed reduction mechanism, the protection mechanism, the linkage mechanism and the clamping mechanism, when the protection mechanism is not in use, the spindle and the milling cutter are shielded by two protection plates, thereby avoiding the splashing of debris when the milling cutter processes the parts. When the milling cutter finishes processing the parts, the arc block is rotated to slide inside the annular groove, so that the clamping block and the locking block are clamped, so that the protection plate no longer shields the spindle and the milling cutter, which makes it convenient for the staff to take the processed parts, and also facilitates the replacement of the milling cutter and the placement of the parts to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an emergency protection device for CNC machine tool manufacturing;

[0026] Figure 2 A schematic diagram of the second form structure of an emergency protection device for CNC machine tool manufacturing;

[0027] Figure 3 It is a structural schematic diagram of a speed reduction mechanism in an emergency protection device for CNC machine tool manufacturing;

[0028] Figure 4 for Figure 3 A is an enlarged schematic diagram;

[0029] Figure 5 It is a structural schematic diagram of a protection mechanism in an emergency protection device for CNC machine tool manufacturing;

[0030] Figure 6 It is a structural schematic diagram of a linkage mechanism in an emergency protection device for CNC machine tool manufacturing;

[0031] Figure 7 The present invention is a schematic diagram of the installation of a driving tooth plate in an emergency protection device for manufacturing CNC machine tools;

[0032] Figure 8 for Figure 5 The enlarged schematic diagram of point B in FIG.

[0033] Fig. 9 The present invention is a schematic diagram of the structure of a locking block in an emergency protection device for CNC machine tool manufacturing.

[0034] In the figure:

[0035] 1. CNC machine tool body; 101. CNC machine tool housing; 102. drive block; 103. spindle; 104. control panel; 105. protective door; 2. deceleration mechanism; 201. arc-shaped clamping plate; 202. clamping spring; 203. main rod; 204. elastic plate; 205. limit plate; 206. spring assembly; 207. auxiliary rod; 208. electromagnetic coil; 3. protective mechanism; 301. ring Groove; 302, arc block; 303, protective plate; 4, linkage mechanism; 401, rotating rod; 402, driving gear; 403, driving tooth plate; 404, linkage gear; 405, linkage tooth plate; 406, linkage rod; 407, sliding groove; 408, guide groove; 5, clamping mechanism; 501, clamping block; 502, elastic rod; 503, flip plate; 504, pressing rod; 505, locking block. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The present invention provides an emergency protection device for numerically controlled machine tool manufacturing, such as Figure 1-Figure 9 As shown, the emergency protection device for manufacturing CNC machine tools comprises a CNC machine tool body 1, the CNC machine tool body 1 comprises a CNC machine tool housing 101, an inner wall of the CNC machine tool housing 101 is fixedly connected with a driving block 102, one side of the driving block 102 is rotatably connected with a spindle 103 corresponding to two arc-shaped clamping plates 201, the arc-shaped clamping plates 201 are slidably connected with the driving block 102, the CNC machine tool body 1 also comprises a control panel 104 fixedly connected to the surface of the CNC machine tool housing 101 and electrically connected to the electromagnetic coil 208 through a wire, when the vibration amplitude of the spindle 103 is too large, the power supply of the CNC machine tool body 1 is disconnected through the control panel 104, so that the driving source no longer drives the spindle 103, and a protective door 105 is slidably connected to one side of the CNC machine tool housing 101, and the provision of the protective door 105 prevents the milling cutter from generating debris that splashes out of the CNC machine tool body 1 when processing the parts, thereby causing harm to the staff;

[0038] The limit plate 205 is slidably connected to the driving block 102. A deceleration mechanism 2 is installed inside the CNC machine tool body 1. The deceleration mechanism 2 includes two arc-shaped clamping plates 201 symmetrically slidably connected to the inside of the CNC machine tool body 1. The four corners of the outer arc surface of the arc-shaped clamping plate 201 are fixedly connected with a clamping spring 202. One end of the clamping spring 202 is fixedly connected to the driving block 102. The middle part of the outer arc surface of the arc-shaped clamping plate 201 is fixedly connected in a symmetrical manner. A secondary rod 207 is connected, and the surface of the secondary rod 207 is slidably sleeved with the main rod 203. The main rod 203 is fixedly connected to the driving block 102. The arc-shaped abutting plate 201 is limited by the arrangement of the main rod 203 and the secondary rod 207, so as to avoid the arc-shaped abutting plate 201 and the elastic plate 204 from deviating, so as to maximize the contact surface between the main shaft 103 and the elastic plate 204, and avoid the reduction of the friction force of the arc-shaped abutting plate 201 and the elastic plate 204 on the main shaft 103;

[0039] The inner arc surface of the arc-shaped clamping plate 201 is fixedly connected with an elastic plate 204, and both sides of the inner arc surface of the elastic plate 204 are fitted with a limit plate 205. The control panel 104 energizes the electromagnetic coil 208 through a wire, so that the electromagnetic coil 208 generates a magnetic force. Through the setting of the magnetic force, the limit plate 205 is adsorbed, so that the limit plate 205 no longer limits the elastic plate 204. The two edges of one side of the limit plate 205 are fixedly connected with a spring assembly 206. The speed reduction mechanism 2 also includes four rectangular arrays installed inside the CNC machine tool body 1 The electromagnetic coil 208, the four electromagnetic coils 208 correspond to the four limit plates 205 one by one, and the corresponding arc-shaped abutting plate 201 and the elastic plate 204 are brought close to each other through the elastic force of the spring assembly 206, so that the elastic plate 204 fits the spindle 103, so that the spindle 103 and the elastic plate 204 rub against each other, thereby increasing the resistance to the rotation of the spindle 103, so that the spindle 103 stops rotating more quickly, avoiding the inertial rotation of the spindle 103 when the parts and the milling cutter are not separated in time, resulting in wear of the milling cutter or damage to the parts;

[0040] The spring assembly 206 is fixedly connected to the corresponding electromagnetic coil 208. A protection mechanism 3 is installed inside the CNC machine tool body 1 near the speed reduction mechanism 2. The protection mechanism 3 includes an annular groove 301 opened on one side of the driving block 102 and corresponding to the main shaft 103. Arc blocks 302 are installed on both sides of the annular groove 301. One of the arc blocks 302 is fixedly connected to the inside of the annular groove 301, and the other arc block 302 is slidably connected to the inside of the annular groove 301. One side of the arc block 302 is rotatably connected to the inside of the annular groove 301 through a pin shaft. The protection plate 303 corresponding to the spindle 103 protects the spindle 103 through the arrangement of two protection plates 303. When the spindle 103 is used, the arc block 302 is slid so that the arc block 302 slides inside the annular groove 301, so that the sliding of the arc block 302 is more stable. When the arc block 302 slides, the protection plates 303 are synchronously driven to rotate, so that one of the protection plates 303 no longer protects the spindle 103, thereby facilitating the replacement or maintenance of the milling cutter by the staff;

[0041] The clamping mechanism 5 is installed on the surface of the protective mechanism 3. The clamping mechanism 5 includes a clamping block 501 slidably connected to the inner wall of the annular groove 301. One side of the clamping block 501 is fixedly connected to an elastic rod 502 fixedly connected to the driving block 102. The surface of the clamping block 501 is fitted with a flip plate 503 rotatably connected to the inside of the driving block 102 through a rotating shaft. One side of the flip plate 503 is fitted with a pressing rod 504 slidably connected to the driving block 102. The clamping mechanism 5 also includes a locking block 505 fixedly connected to the surface of another arc block 302 and corresponding to the clamping block 501. When the protective plate 303 and the arc block 302 slide in the annular groove 301, the locking block 505 is driven to move synchronously, so that the locking block 505 is clamped with the clamping block 501. The arc block 302 is thereby limited, making it convenient for the staff to operate the spindle 103 and the milling cutter. When the operation is completed, the pressing rod 504 is pushed, so that one end of the pressing rod 504 pushes one side of the flip plate 503 to rotate. Through the setting of the rotating shaft, the other side of the flip plate 503 is rotated, pushing the clamping block 501 to move, so that the clamping block 501 is no longer clamped to the locking block 505, so that the arc block 302 is automatically reset by its own gravity, so that the arc block 302 and the protective plate 303 continue to protect the spindle 103, and the clamping block 501 is automatically reset by the elastic force of the elastic rod 502, so that the flip plate 503 and the pressing rod 504 are reset, which is convenient for the secondary use of the clamping mechanism 5;

[0042] The linkage mechanism 4 is installed on the surface of the main rod 203. The linkage mechanism 4 includes two rotating rods 401 that are symmetrically connected to the inside of the driving block 102. Both ends of the rotating rods 401 are fixedly connected to driving gears 402, wherein the surfaces of the two driving gears 402 are meshed with driving tooth plates 403 that are slidably connected to the surface of the main rod 203, and one side of the two driving tooth plates 403 is fixedly connected to the corresponding auxiliary rods 207 respectively. The linkage mechanism 4 also includes a linkage gear 404 that is meshed with the other two driving gears 402, and the surface of the linkage gear 404 is meshed with a linkage tooth plate 405 that is slidably connected to the driving block 102 One side of the linkage tooth plate 405 is fixedly connected with a linkage rod 406 which is slidably connected to the driving block 102. When the arc-shaped abutting plate 201 moves downward, the auxiliary rod 207 is synchronously driven to move downward, so that the driving tooth plate 403 moves synchronously, thereby driving the corresponding driving gear 402 to mesh and rotate, so that the rotating rod 401 drives another driving gear 402 to rotate, so that the linkage gear 404 meshes and rotates, thereby driving the linkage tooth plate 405 to slide, and driving the linkage rod 406 to pull one side of the two protection plates 303 closer to each other, so that the protection plate 303 protects the spindle 103 and avoids the milling cutter from hitting the cutter;

[0043] One side of the two linkage rods 406 is rotatably connected to the corresponding protective plate 303 through a pin shaft, and the opposite sides of the two protective plates 303 are provided with sliding grooves 407 corresponding to the linkage rods 406. Through the setting of the sliding grooves 407, the linkage rods 406 are prevented from causing movement obstruction to the movement of the protective plates 303. The surfaces of the driving tooth plates 403 are provided with guide grooves 408, and the internal sliding connection of the guide grooves 408 is connected with a limit rod fixedly connected to the main rod 203. Through the mutual cooperation of the guide grooves 408 and the limit rod, the driving tooth plates 403 are more stable when moving.

[0044] Specifically, when the emergency protection device for manufacturing CNC machine tools is in use: when the vibration amplitude of the spindle 103 is too large, the power supply of the CNC machine tool body 1 is disconnected through the control panel 104, so that the driving source no longer drives the spindle 103, and at the same time, the control panel 104 energizes the electromagnetic coil 208 through the wire, so that the electromagnetic coil 208 generates a magnetic force, and through the setting of the magnetic force, the limit plate 205 is adsorbed, so that the limit plate 205 no longer limits the elastic plate 204, and the elastic force of the spring assembly 206 makes the corresponding arc-shaped clamping plate 201 and the elastic plate 204 approach each other, so that the elastic The plate 204 fits with the main shaft 103, so that the main shaft 103 and the elastic plate 204 rub against each other, increasing the resistance to the rotation of the main shaft 103, so that the main shaft 103 stops rotating more quickly, avoiding the wear of the milling cutter or damage to the parts due to the inertial rotation of the main shaft 103 when the parts and the milling cutter are not separated in time. The arc-shaped clamping plate 201 is limited by the arrangement of the main rod 203 and the auxiliary rod 207, avoiding the deviation of the arc-shaped clamping plate 201 and the elastic plate 204, maximizing the fitting surface of the main shaft 103 and the elastic plate 204, and avoiding the reduction of the friction force of the arc-shaped clamping plate 201 and the elastic plate 204 on the main shaft 103;

[0045] When the arc-shaped clamping plate 201 moves downward, the auxiliary rod 207 is synchronously driven to move downward, so that the driving tooth plate 403 moves synchronously, thereby driving the corresponding driving gear 402 to engage and rotate, so that the rotating rod 401 drives another driving gear 402 to rotate, and the linkage gear 404 engages and rotates, thereby driving the linkage tooth plate 405 to slide, and driving the linkage rod 406 to pull one side of the two protective plates 303 closer to each other, so that the protective plates 303 protect the main shaft 103 and avoid the milling cutter from hitting the cutter.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An emergency protection device for CNC machine tool manufacturing, the emergency protection device comprising a CNC machine tool body (1), characterized in that: A speed reduction mechanism (2) is installed inside the CNC machine tool body (1), and a protection mechanism (3) is installed inside the CNC machine tool body (1) near the speed reduction mechanism (2); The deceleration mechanism (2) comprises two arc-shaped clamping plates (201) slidably connected to the inside of the CNC machine tool body (1) in a symmetrical manner, the four corners of the outer arc surface of the arc-shaped clamping plate (201) are fixedly connected with clamping springs (202), the middle part of the outer arc surface of the arc-shaped clamping plate (201) is fixedly connected with a secondary rod (207) in a symmetrical manner, the surface of the secondary rod (207) is slidably sleeved with a main rod (203), the inner arc surface of the arc-shaped clamping plate (201) is fixedly connected with an elastic plate (204), both sides of the inner arc surface of the elastic plate (204) are fitted with a limit plate (205), and the two edges of one side of the limit plate (205) are fixedly connected with a spring assembly (206); The deceleration mechanism (2) further comprises four electromagnetic coils (208) installed in a rectangular array inside the CNC machine tool body (1), the four electromagnetic coils (208) respectively corresponding to the four limit plates (205), and the spring assembly (206) is fixedly connected to the corresponding electromagnetic coils (208); The emergency protection device further comprises a linkage mechanism (4) mounted on the surface of the main rod (203); The clamping mechanism (5) is mounted on the surface of the protection mechanism (3).

2. The emergency protection device for CNC machine tool manufacturing according to claim 1, characterized in that: The CNC machine tool body (1) comprises a CNC machine tool housing (101), an inner wall of which is fixedly connected to a driving block (102), one side of which is rotatably connected to a main shaft (103) corresponding to two arc-shaped clamping plates (201), the arc-shaped clamping plates (201) being slidably connected to the driving block (102), one end of the clamping spring (202) being fixedly connected to the driving block (102), and the main rod (203) being fixedly connected to the driving block (102).

3. The emergency protection device for CNC machine tool manufacturing according to claim 2, characterized in that: The CNC machine tool body (1) further comprises a control panel (104) fixedly connected to the surface of the CNC machine tool housing (101) and electrically connected to the electromagnetic coil (208) via a wire; a protective door (105) is slidably connected to one side of the CNC machine tool housing (101); and the limit plate (205) is slidably connected to the driving block (102).

4. The emergency protection device for CNC machine tool manufacturing according to claim 2 is characterized in that: The protection mechanism (3) comprises an annular groove (301) opened on one side of the driving block (102) and corresponding to the main shaft (103); arc blocks (302) are installed on both sides of the inside of the annular groove (301); one of the arc blocks (302) is fixedly connected to the inside of the annular groove (301); the other arc block (302) is slidably connected to the inside of the annular groove (301); one side of the arc block (302) is rotatably connected to a protection plate (303) corresponding to the main shaft (103) via a pin shaft.

5. The emergency protection device for CNC machine tool manufacturing according to claim 4 is characterized in that: The clamping mechanism (5) comprises a clamping block (501) slidably connected to the inner wall of the annular groove (301); one side of the clamping block (501) is fixedly connected to an elastic rod (502) fixedly connected to the driving block (102); a flip plate (503) rotatably connected to the inside of the driving block (102) via a rotating shaft is attached to the surface of the clamping block (501); and one side of the flip plate (503) is attached to a pressing rod (504) slidably connected to the driving block (102); The clamping mechanism (5) further comprises a locking block (505) fixedly connected to the surface of another arc-shaped block (302) and corresponding to the clamping block (501).

6. The emergency protection device for CNC machine tool manufacturing according to claim 4, characterized in that: The linkage mechanism (4) comprises two rotating rods (401) symmetrically connected to the inside of the driving block (102), both ends of the rotating rods (401) are fixedly connected to driving gears (402), wherein the surfaces of the two driving gears (402) are meshed with driving tooth plates (403) slidably connected to the surface of the main rod (203), and one side of the two driving tooth plates (403) is fixedly connected to the corresponding auxiliary rod (207).

7. An emergency protection device for CNC machine tool manufacturing according to claim 6, characterized in that: The linkage mechanism (4) further comprises a linkage gear (404) meshing with the other two driving gears (402); a linkage toothed plate (405) slidably connected to the driving block (102) is meshed on the surface of the linkage gear (404); a linkage rod (406) slidably connected to the driving block (102) is fixedly connected to one side of the linkage toothed plate (405); and one side of the two linkage rods (406) are rotationally connected to the corresponding protective plates (303) via pins.

8. An emergency protection device for CNC machine tool manufacturing according to claim 7, characterized in that: The opposite sides of the two protective plates (303) are provided with sliding grooves (407) corresponding to the linkage rod (406), and the surface of the driving tooth plate (403) is provided with a guide groove (408), and the inside of the guide groove (408) is slidably connected to a limit rod fixedly connected to the main rod (203).

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