Plate machining drilling machine with tool protection function

Abstract

The invention relates to the technical field of plate machining drilling machines, in particular to a plate machining drilling machine with a tool protection function. According to the plate machining drilling machine with the tool protection function, scrap iron can be adsorbed and collected, and the scrap iron is prevented from being attached to a tool and damaging the tool. A plate machining drilling machine with a cutter protection function comprises a machining drilling machine body, a moving frame, a drill bit and a protection mechanism, the moving frame is arranged on the upper portion of the machining drilling machine body, the drill bit is arranged on the moving frame, and the protection mechanism capable of protecting the drill bit is arranged on the moving frame. According to the scrap iron collecting device, adsorption plates are far away from each other, a telescopic swing rod rotates, a sliding block is pulled to move upwards, the sliding block pushes scrap iron adsorbed to the adsorption plates to a collecting groove, the scrap iron enters a collecting frame, and the effects that the scrap iron can be adsorbed and collected, and the scrap iron is prevented from being attached to a tool and damaging the tool are achieved.

Description

Technical Field

[0001] This invention relates to the field of drilling machines for sheet metal processing, and in particular to a drilling machine for sheet metal processing with tool protection function. Background Technology

[0002] Drilling machines for sheet metal processing, especially CNC surface drilling machines, are key pieces of equipment used in the metal or non-metal sheet metal processing industry for efficient and precise drilling operations. These machines are designed and functioned with a focus on achieving high-precision drilling, tapping, reaming, and countersinking operations on large sheet metal.

[0003] Existing sheet metal drilling machines work by placing the sheet metal on a worktable and then pressing down and rotating the drill bit to drill holes at designated locations on the sheet metal. However, when the drill bit drills into the sheet metal, iron filings from the drill hole are easily splashed out and adhere to the drill bit, causing damage and shortening its service life.

[0004] Therefore, a plate machining drilling machine with tool protection function has now been developed, which can adsorb and collect iron filings to prevent them from adhering to the cutting tool and causing damage to it. Summary of the Invention

[0005] To overcome the shortcomings of existing sheet metal drilling machines, where iron filings easily splash out and adhere to the drill bit during drilling, causing damage and shortening the drill bit's lifespan, this invention provides a sheet metal drilling machine with a tool protection function that can adsorb and collect iron filings, preventing them from adhering to the cutting tool and causing damage.

[0006] The technical implementation of the present invention is as follows: a plate processing drilling machine with tool protection function, comprising a processing drilling machine, a moving frame, a drill bit and a protective mechanism, wherein the upper part of the processing drilling machine is provided with a moving frame, the moving frame is provided with a drill bit, and the moving frame is provided with a protective mechanism capable of protecting the drill bit.

[0007] Optionally, the drill bit is threaded.

[0008] Optionally, the protective mechanism includes a first support frame, a second support frame, a motor, a rotating frame, an adsorption plate, a collection frame, a slider, and a telescopic swing arm. The first support frame is connected to both the left and right sides of the front of the moving frame, and the second support frame is connected to both the left and right sides of the front of the moving frame. The second support frames are all located below the first support frames. A motor is connected to each of the first support frames, and a rotating frame is rotatably connected to each of the second support frames. The motor output shaft is connected to the adjacent rotating frame. An adsorption plate is connected to each rotating frame, and a collection frame is snapped into the inner side of each adsorption plate. A slider is slidably connected to each rotating frame, with the upper part of the slider... Each component is rotatably connected to a telescopic swing arm, which is rotatably connected to the moving frame. When the motor on the first support frame is started, it drives the rotating frame on the second support frame to rotate, causing the adsorption plates to move closer together and close. This allows the adsorption plates to surround the outside of the drill bit, and the iron filings that splash out are adsorbed onto the adsorption plates. As the adsorption plates move closer together and close, the telescopic swing arm rotates to a vertical position, causing the slider to slide down to the bottom of the adsorption plate. After the drilling of the plate is completed, the adsorption plates move away from each other, causing the telescopic swing arm to rotate and pull the slider upward, so that the slider pushes the iron filings adsorbed on the adsorption plate into the collection frame.

[0009] Optionally, a collection groove is provided on the side of the collection frame closest to the adsorption plate.

[0010] Optionally, it also includes a stabilizing mechanism, which includes a fixed rod, a limiting sleeve, a rotating ring, and bolts. Two fixed rods are connected to the lower side of the middle of the moving frame. Two limiting sleeves are engaged between the lower parts of the fixed rods. The limiting sleeves are in contact with each other and closed. A rotating ring is engaged between the limiting sleeves and is connected to the drill bit. Bolts are engaged between the front and rear parts of the limiting sleeves. Each bolt is equipped with a nut, and the nuts are in contact with the adjacent limiting sleeves. After the limiting sleeves are fixed between the fixed rods, the limiting sleeves are connected by bolts and nuts. When the drill bit rotates, it drives the rotating ring to rotate on the limiting sleeves.

[0011] Optionally, it also includes an isolation mechanism, which includes a support plate, connecting rods, a connecting plate, an isolation cover, and a second pressure spring. The support plate is connected to the front side of the drill bit, and two connecting rods are slidably connected to the support plate. A connecting plate is connected between the lower sides of the connecting rods, and an isolation cover is connected to the lower part of the connecting plate. The drill bit passes through the isolation cover, and the connecting rods are all connected to the support plate by the second pressure spring. When the drill bit moves downward to drill a hole in the plate, the isolation cover contacts the surface of the plate. After the drill bit continues to move downward, the connecting plate and the connecting rods move relative to the support plate. The force of the second pressure spring keeps the isolation cover in close contact with the surface of the plate.

[0012] Optionally, the isolation enclosure has a conical structure.

[0013] Optionally, it also includes a guiding mechanism, which includes support columns, a guide cover, pressure blocks, a top frame, a third pressure spring, and a fourth pressure spring. Multiple support columns are connected to the upper side of the isolation cover, and the guide cover is slidably connected between the support columns. The guide cover is located inside the isolation cover, and multiple pressure blocks are connected to the upper side of the guide cover. The top frame is slidably connected to both the front and rear parts of the rotating ring. The top frame and the pressure blocks are pressed together. A third pressure spring is connected between the top frame and the rotating ring, and a fourth pressure spring is connected between the support columns and the guide cover. When the iron filings splash out, they move between the isolation cover and the guide cover. Guided by the isolation cover and the guide cover, the iron filings splash to both sides onto the adsorption plate. While the rotating ring rotates, it drives the top frame to rotate, causing the top frame to press the pressure blocks, which causes the guide cover to move up and down, carrying out the remaining iron filings.

[0014] Optionally, it also includes a limiting mechanism, which includes a connecting frame, a limiting block and a first torsion spring. The upper and lower sides of the left and right sides of the rotating ring are connected to the connecting frame, and the connecting frame is rotatably connected to the limiting block. The limiting block is connected to the connecting frame by two first torsion springs, and the limiting block is pressed against the drill bit by the force of the first torsion spring.

[0015] Optionally, it also includes a rotating mechanism, which includes a fixed column, a cleaning block, and a third torsion spring. Fixed columns are connected to the upper sides of both the left and right sides of the guide cover, and cleaning blocks are rotatably connected to the fixed columns. The top frame and the cleaning blocks are pressed together. A third torsion spring is connected between the cleaning blocks and the fixed columns they are connected to. When the top frame rotates, it presses the cleaning blocks to rotate, causing the third torsion spring to deform. After the top frame is disengaged, the third torsion spring returns to its original position, thus resetting the cleaning blocks.

[0016] The present invention has the following advantages: 1. By moving the adsorption plates away from each other, the telescopic swing rod rotates and pulls the slider upward, so that the slider pushes the iron filings adsorbed on the adsorption plates to the collection groove, so that the iron filings enter the collection frame, thereby achieving the effect of adsorbing and collecting iron filings and avoiding iron filings adhering to the cutting tool and causing damage to the cutting tool.

[0017] 2. The present invention connects the limiting sleeve with bolts and nuts. When the drill bit rotates, it drives the rotating ring to rotate on the limiting sleeve, thereby enhancing the stability of the drill bit and preventing the drill bit from bending.

[0018] 3. This invention uses an isolation cover and a guide cover to guide the iron filings to both sides onto the adsorption plate. As the rotating ring rotates, it drives the top frame to rotate, causing the top frame to squeeze the pressure block and the guide cover to move up and down, carrying out the remaining iron filings. This achieves the effect of isolating and guiding the iron filings, making it easier to adsorb them.

[0019] 4. The present invention uses the force of the first torsion spring to press the limiting block tightly onto the drill bit, thereby stabilizing the drill bit and enhancing its stability during the drilling process.

[0020] 5. This invention achieves the effect of dislodging iron filings and preventing them from falling back by rotating the top frame while squeezing the cleaning block. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a partial magnified three-dimensional structural diagram of the present invention.

[0023] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention.

[0024] Figure 4 This is a three-dimensional structural diagram of the protective mechanism of the present invention.

[0025] Figure 5 This is a three-dimensional structural diagram of the first part of the stabilizing mechanism of the present invention.

[0026] Figure 6 This is a three-dimensional structural diagram of the second part of the stabilizing mechanism of the present invention.

[0027] Figure 7 This is a three-dimensional structural diagram of the isolation mechanism of the present invention.

[0028] Figure 8 This is a three-dimensional structural diagram of the guiding mechanism of the present invention.

[0029] Figure 9 This is a three-dimensional structural diagram of the limiting mechanism of the present invention.

[0030] Figure 10 This is a three-dimensional structural diagram of the rotating mechanism of the present invention.

[0031] The meanings of the reference numerals in the figure are as follows: 1: Machining drill, 2: Moving frame, 3: Drill bit, 4: Protective mechanism, 41: First support frame, 42: Second support frame, 43: Motor, 44: Rotating frame, 45: Adsorption plate, 46: Collection frame, 47: Slider, 48: Telescopic swing arm, 5: Stabilizing mechanism, 51: Fixed rod, 52: Limit sleeve, 53: Rotating ring, 54: Bolt, 6: Isolation mechanism, 61: Support plate, 62: Connecting rod, 63: Connecting plate, 64: Isolation cover, 65: Second pressure spring, 7: Guide mechanism, 71: Support column, 72: Guide cover, 73: Pressure block, 74: Top frame, 75: Third pressure spring, 76: Fourth pressure spring, 8: Limiting mechanism, 81: Connecting frame, 82: Limit block, 83: First torsion spring, 9: Rotating mechanism, 91: Fixed column, 92: Cleaning block, 93: Third torsion spring. Detailed Implementation

[0032] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] A sheet metal machining drilling machine with tool protection function, such as Figures 1-3 As shown, it includes a processing drill 1, a moving frame 2, a drill bit 3, and a protective mechanism 4. The processing drill 1 is equipped with a moving frame 2 on its upper part, and the moving frame 2 is equipped with a drill bit 3. The drill bit 3 is threaded to facilitate drilling holes in the plate. The moving frame 2 is equipped with a protective mechanism 4.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, the protective mechanism 4 includes a first support frame 41, a second support frame 42, a motor 43, a rotating frame 44, an adsorption plate 45, a collection frame 46, a slider 47, and a telescopic swing rod 48. The first support frame 41 is connected to the left and right sides of the front of the moving frame 2, and the second support frame 42 is connected to the left and right sides of the front of the moving frame 2. The second support frames 42 are all located below the first support frame 41. The motor 43 is connected to the first support frame 41, and the rotating frame 44 is rotatably connected to the second support frame 42. The output shaft of the motor 43 is connected to the adjacent rotating frame 44. The adsorption plate 45 is connected to the rotating frame 44. The collection frame 46 is snapped into the inner side of the adsorption plate 45. The collection frame 46 has a collection groove on the side near the adsorption plate 45 to facilitate the collection of iron filings. The slider 47 is slidably connected to the rotating frame 44. The telescopic swing rod 48 is rotatably connected to the upper part of the slider 47. The telescopic swing rod 48 is rotatably connected to the moving frame 2.

[0035] When using this invention, firstly, the machining drill 1 is placed in the metal sheet processing area, and then the metal sheet to be processed is placed on the machining drill 1. After placement, the machining drill 1 is started to move the moving frame 2, which in turn moves the drill bit 3 to the designated position. Then, the drill bit 3 is controlled to move downward and rotate, so that the drill bit 3 drills a hole in the sheet. While the drill bit 3 is drilling the sheet, the motor 43 on the first support frame 41 can be started to drive the rotating frame 44 on the second support frame 42 to rotate, so that the adsorption plates 45 move closer together and close, so that the adsorption plates 45 surround the outside of the drill bit 3. After the iron filings are splashed out, they are adsorbed onto the adsorption plates 45. 5. As the adsorption plates 45 approach and close together, the telescopic lever 48 rotates to a vertical position, causing the slider 47 to slide downwards to the bottom of the adsorption plate 45. After the plate is drilled, the adsorption plates 45 move away from each other, causing the telescopic lever 48 to rotate and pull the slider 47 upwards. This pushes the iron filings adsorbed on the adsorption plates 45 to the collection groove, allowing the iron filings to enter the collection frame 46. This effectively adsorbs and collects the iron filings, preventing them from adhering to the cutting tool and damaging it. If there are many iron filings in the collection frame 46, the collection frame 46 can be removed to clean the iron filings inside.

[0036] like Figure 2 , Figure 5 and Figure 6 As shown, it also includes a stabilizing mechanism 5, which includes a fixed rod 51, a limiting sleeve 52, a rotating ring 53, and bolts 54. The lower side of the middle of the moving frame 2 is connected to two fixed rods 51, and two limiting sleeves 52 are engaged between the lower parts of the fixed rods 51. The limiting sleeves 52 are in contact with each other and closed. A rotating ring 53 is engaged between the limiting sleeves 52 and is connected to the drill bit 3. Bolts 54 are engaged between the front and rear parts of the limiting sleeves 52. Each bolt 54 is provided with a nut, and the nuts are in contact with the adjacent limiting sleeves 52.

[0037] Using the stabilizing mechanism 5 of this device can enhance the stability of the drill bit 3. After fixing the limiting sleeve 52 between the fixing rods 51, the limiting sleeve 52 is connected by bolts 54 and nuts. When the drill bit 3 rotates, it drives the rotating ring 53 to rotate on the limiting sleeve 52, thereby enhancing the stability of the drill bit 3 and preventing the drill bit 3 from bending.

[0038] like Figure 1 , Figure 2 and Figure 7As shown, it also includes an isolation mechanism 6, which includes a support plate 61, a connecting rod 62, a connecting plate 63, an isolation cover 64, and a second pressure spring 65. The support plate 61 is connected to the front side of the drill bit 3. Two connecting rods 62 are slidably connected to the support plate 61. The connecting plate 63 is connected between the lower sides of the connecting rods 62. The isolation cover 64 is connected to the lower part of the connecting plate 63. The drill bit 3 passes through the isolation cover 64. The isolation cover 64 has a conical structure to facilitate the guidance of iron filings to both sides. The second pressure spring 65 is connected between each connecting rod 62 and the support plate 61.

[0039] like Figure 2 and Figure 8 As shown, it also includes a guide mechanism 7, which includes support columns 71, guide covers 72, pressure blocks 73, top frames 74, third pressure springs 75 and fourth pressure springs 76. Four support columns 71 are connected to the upper side of the isolation cover 64, and guide covers 72 are slidably connected between the support columns 71. The guide covers 72 are located inside the isolation cover 64, and four pressure blocks 73 are connected to the upper side of the guide covers 72. The top frames 74 are slidably connected to both the front and rear parts of the rotating ring 53. The top frames 74 and pressure blocks 73 are pressed together. The top frames 74 are connected to the rotating ring 53 with third pressure springs 75, and the support columns 71 are connected to the guide covers 72 with fourth pressure springs 76.

[0040] Using the isolation mechanism 6 and the guiding mechanism 7 of this device, iron filings can be isolated from the drill bit 3 and guided. When the drill bit 3 moves downward to drill a hole in the plate, the isolation cover 64 contacts the surface of the plate. After the drill bit 3 continues to move downward, the connecting plate 63 and the connecting rod 62 move relative to the support plate 61. The force of the second pressure spring 65 keeps the isolation cover 64 in close contact with the surface of the plate. When iron filings splash out, they move between the isolation cover 64 and the guide cover 72. Guided by the isolation cover 64 and the guide cover 72, the iron filings splash to both sides onto the adsorption plate 45. While the rotating ring 53 rotates, it drives the top frame 74 to rotate, causing the top frame 74 to squeeze the pressure block 73, causing the guide cover 72 to move up and down, carrying out the remaining iron filings. This achieves the function of isolating and guiding the iron filings, facilitating the adsorption of iron filings. After the drill bit 3 stops rotating, the force of the third pressure spring 75 and the fourth pressure spring 76 resets the top frame 74 and the guide cover 72.

[0041] like Figure 2 and Figure 9 As shown, it also includes a limiting mechanism 8, which includes a connecting frame 81, a limiting block 82 and a first torsion spring 83. The upper sides of the left and right sides and the lower sides of the left and right sides of the rotating ring 53 are connected to the connecting frame 81. The limiting block 82 is rotatably connected to the connecting frame 81. The limiting block 82 is connected to the connecting frame 81 by two first torsion springs 83.

[0042] Using the limiting mechanism 8 of this device, the drill bit 3 can be limited and reinforced. The limiting block 82 is pressed onto the drill bit 3 by the force of the first torsion spring 83, thereby stabilizing the drill bit 3 and enhancing its stability during the drilling process.

[0043] like Figure 2 and Figure 10 As shown, it also includes a rotating mechanism 9, which includes a fixed column 91, a cleaning block 92 and a third torsion spring 93. The upper sides of the left and right sides of the guide cover 72 are connected to the fixed column 91, and the cleaning block 92 is rotatably connected to the fixed column 91. The top frame 74 is pressed and engaged with the cleaning block 92, and the cleaning block 92 is connected to the fixed column 91 with the third torsion spring 93.

[0044] Using the rotating mechanism 9 of this device, iron filings can be ejected. While the top frame 74 rotates, it squeezes the cleaning block 92 to rotate, causing the third torsion spring 93 to deform. After the top frame 74 disengages, the third torsion spring 93 returns to its original state, allowing the cleaning block 92 to reset. This effectively ejects iron filings and prevents them from falling back.

[0045] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the invention without departing from the principles and spirit of the invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A plate machining drilling machine with tool protection function, characterized in that: It includes a machining drill (1), a moving frame (2), a drill bit (3) and a protective mechanism (4). The machining drill (1) is equipped with a moving frame (2) on its upper part, and the moving frame (2) is equipped with a drill bit (3). The moving frame (2) is equipped with a protective mechanism (4) that can protect the drill bit (3).

2. A plate machining drilling machine with tool protection function according to claim 1, characterized in that: The drill bit (3) has threads.

3. A plate machining drilling machine with tool protection function according to claim 1, characterized in that: The protective mechanism (4) includes a first support frame (41), a second support frame (42), a motor (43), a rotating frame (44), an adsorption plate (45), a collection frame (46), a slider (47), and a telescopic swing rod (48). The first support frame (41) is connected to the left and right sides of the front of the moving frame (2), and the second support frame (42) is connected to the left and right sides of the front of the moving frame (2). The second support frame (42) is located below the first support frame (41). The motor (43) is connected to the first support frame (41), and the rotating frame (44) is rotatably connected to the second support frame (42). The output shaft of the motor (43) is connected to the adjacent rotating frame (44). The adsorption plate (45) is connected to the rotating frame (44), and the collection frame (46) is snapped into the inner side of the adsorption plate (45). The slider is slidably connected to the rotating frame (44). 47), the upper part of the slider (47) is rotatably connected to the telescopic swing rod (48), and the telescopic swing rod (48) is rotatably connected to the moving frame (2). The motor (43) on the first support frame (41) is started, which drives the rotating frame (44) on the second support frame (42) to rotate, so that the adsorption plates (45) approach each other and close, so that the adsorption plates (45) surround the outside of the drill bit (3). After the iron filings are splashed out, they are adsorbed onto the adsorption plates (45). At the same time as the adsorption plates (45) approach each other and close, the telescopic swing rod (48) rotates to a vertical state, so that the slider (47) slides down to the bottom of the adsorption plate (45). After the plate is drilled, the adsorption plates (45) move away from each other, so that the telescopic swing rod (48) rotates and pulls the slider (47) to move upward, so that the slider (47) pushes the iron filings adsorbed on the adsorption plates (45) into the collection frame (46).

4. A plate machining drilling machine with tool protection function according to claim 3, characterized in that: Collection slots are provided on the side of the collection frame (46) near the adsorption plate (45).

5. A plate machining drilling machine with tool protection function according to claim 3, characterized in that: It also includes a stabilizing mechanism (5), which includes a fixed rod (51), a limiting sleeve (52), a rotating ring (53), and a bolt (54). The lower middle part of the moving frame (2) is connected to two fixed rods (51) in the front and rear. The lower part of the fixed rods (51) is clamped between two limiting sleeves (52) in the left and right. The limiting sleeves (52) are in contact with each other and closed. The limiting sleeves (52) are clamped between the limiting sleeves (52) and the rotating ring (53) is connected to the drill bit (3). The front and rear parts of the limiting sleeves (52) are clamped with bolts (54). Each bolt (54) is provided with a nut. The nuts are in contact with the adjacent limiting sleeves (52). After the limiting sleeves (52) are fixed between the fixed rods (51), the limiting sleeves (52) are connected by bolts (54) and nuts. When the drill bit (3) rotates, it drives the rotating ring (53) to rotate on the limiting sleeves (52).

6. A plate machining drilling machine with tool protection function according to claim 5, characterized in that: It also includes an isolation mechanism (6), which includes a support plate (61), a connecting rod (62), a connecting plate (63), an isolation cover (64), and a second pressure spring (65). The front side of the drill bit (3) is connected to the support plate (61), and the support plate (61) is slidably connected to two connecting rods (62). The lower side of the connecting rods (62) is connected to the connecting plate (63), and the lower part of the connecting plate (63) is connected to the isolation cover (64). The drill bit (3) passes through the isolation cover (64). The connecting rods (62) are connected to the support plate (61) by the second pressure spring (65). When the drill bit (3) moves downward to drill a hole in the plate, the isolation cover (64) contacts the surface of the plate. After the drill bit (3) continues to move downward, the connecting plate (63) and the connecting rods (62) move relative to the support plate (61). The isolation cover (64) is kept in close contact with the surface of the plate by the force of the second pressure spring (65).

7. A plate machining drilling machine with tool protection function according to claim 6, characterized in that: The isolation shield (64) has a conical structure.

8. A plate machining drilling machine with tool protection function according to claim 6, characterized in that: It also includes a guide mechanism (7), which includes a support column (71), a guide cover (72), a pressure block (73), a top frame (74), a third pressure spring (75), and a fourth pressure spring (76). Multiple support columns (71) are connected to the upper side of the isolation cover (64), and the guide cover (72) is slidably connected between the support columns (71). The guide cover (72) is located inside the isolation cover (64), and multiple pressure blocks (73) are connected to the upper side of the guide cover (72). The top frame (74) is slidably connected to both the front and rear parts of the rotating ring (53). The top frame (74) and the pressure block (73) are connected to each other. The compression mechanism is used. The top frame (74) is connected to the rotating ring (53) by a third pressure spring (75), and the support column (71) is connected to the guide cover (72) by a fourth pressure spring (76). When the iron filings are splashed out, they move between the isolation cover (64) and the guide cover (72). Through the isolation cover (64) and the guide cover (72), the iron filings are splashed to both sides onto the adsorption plate (45). While the rotating ring (53) rotates, it drives the top frame (74) to rotate, so that the top frame (74) squeezes the pressure block (73), causing the guide cover (72) to move up and down and carry out the remaining iron filings.

9. A plate machining drilling machine with tool protection function according to claim 8, characterized in that: It also includes a limiting mechanism (8), which includes a connecting frame (81), a limiting block (82) and a first torsion spring (83). The upper and lower sides of the left and right sides of the rotating ring (53) are connected to the connecting frame (81), and the limiting block (82) is rotatably connected to the connecting frame (81). The limiting block (82) is connected to the connecting frame (81) with two first torsion springs (83) in the front and rear. The limiting block (82) is pressed onto the drill bit (3) by the force of the first torsion spring (83).

10. A plate machining drilling machine with tool protection function according to claim 9, characterized in that: It also includes a rotating mechanism (9), which includes a fixed column (91), a cleaning block (92) and a third torsion spring (93). The upper sides of the left and right sides of the guide cover (72) are connected to fixed columns (91), and the cleaning blocks (92) are rotatably connected to the fixed columns (91). The top frame (74) and the cleaning blocks (92) are pressed together. The cleaning blocks (92) are connected to the fixed columns (91) with the third torsion spring (93). When the top frame (74) rotates, it presses the cleaning blocks (92) to rotate. The third torsion spring (93) deforms. After the top frame (74) is disengaged, the third torsion spring (93) recovers, so that the cleaning blocks (92) are reset.

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