Universal drill bit for steel part machining

Abstract

The invention discloses a universal drill bit for steel part machining, and relates to the technical field of metal cutting machining, the universal drill bit comprises a drill bit connecting part and a machining drill bit, the bottom end of the drill bit connecting part is fixedly connected with a motor for providing power for the machining drill bit and an angle adjusting mechanism, and the angle adjusting mechanism is arranged at the lower end of the drill bit connecting part; the angle adjusting mechanism comprises an upper rotating shaft, a lower rotating shaft, a middle rotating shaft and a cross shaft, the top end of the upper rotating shaft is fixedly connected with an output shaft of a motor at the bottom end of the drill bit connecting part, the lower end of the upper rotating shaft and the upper end of the middle rotating shaft are fixedly connected with first universal joints, and the lower end of the middle rotating shaft and the upper end of the lower rotating shaft are fixedly connected with second universal joints; and the two first universal joint forks are rotationally connected through a cross shaft, the two second universal joint forks are rotationally connected through a cross shaft, and the bottom end of the lower rotating shaft is rotationally connected with a connecting plate, so that the problems that the machining requirement of the conical hole is difficult to meet, and the machining flexibility is poor are solved.

Description

Technical Field

[0001] The invention relates to the technical field of metal cutting, and more particularly to a universal drill bit for steel workpiece processing. Background Art

[0002] A drill bit is a tool that rotates at high speed and has a cutting edge on its head, which is used to perform drilling operations on materials. In the process of using steel as raw material to manufacture steel parts and in the subsequent steel part processing process, the drill bit is used to perform cutting and drilling operations to process the raw materials into specific required shapes and sizes.

[0003] When using a drill to process steel parts, depending on different processing requirements, it is sometimes required to perform drilling operations on the surface of the steel parts while ensuring that the drilled holes present a conical structure with a narrow opening and a spacious interior. Traditional drills use a linear forward and backward movement mode to complete the hole opening operation, which limits the ability to achieve geometric shape processing and is difficult to meet the processing requirements of conical holes. Traditional drills have poor processing flexibility. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a universal drill bit for steel processing to solve the problem that it is difficult to meet the processing requirements of tapered holes and the processing flexibility is poor.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A universal drill bit for processing steel parts comprises a drill bit connecting part and a processing drill bit, the bottom end of the drill bit connecting part is fixedly connected with a motor for providing power for the processing drill bit, and an angle adjustment mechanism, the angle adjustment mechanism is arranged at the lower end of the drill bit connecting part, the angle adjustment mechanism comprises an upper rotating shaft, a lower rotating shaft, a middle rotating shaft and a cross shaft, the top end of the upper rotating shaft is fixedly connected with the output shaft of the motor at the bottom end of the drill bit connecting part, the lower end of the upper rotating shaft and the upper end of the middle rotating shaft are both fixedly connected with a first universal yoke fork, the lower end of the middle rotating shaft and the upper end of the lower rotating shaft are both fixedly connected with a second universal yoke fork, the two first universal yoke forks are rotatably connected by a cross shaft, the two second universal yoke forks are rotatably connected by a cross shaft, the bottom end of the lower rotating shaft is rotatably connected with a connecting plate, and the processing drill bit is rotatably connected to the right end of the connecting plate.

[0007] Furthermore, a first gear is fixedly sleeved on the lower end of the lower rotating shaft, a second gear is sleeved on the top end of the processing drill bit, and the first gear is meshed with the second gear.

[0008] Furthermore, the bottom end of the drill bit connecting part is fixedly connected to a connecting block, the surface of the connecting block is rotatably connected to a rotating block, the lower end of the rotating block is fixedly connected to two suspension brackets, the top fixed sleeve of the processing drill bit is provided with an annular slide rail, and the lower ends of the two suspension brackets are both slidably connected to the inside of the annular slide rail.

[0009] Furthermore, the bottom end of the drill bit connecting part is fixedly connected to a suspension rod, the lower end of the suspension rod is fixedly connected to a second hydraulic rod, the output shaft of the second hydraulic rod is fixedly connected to a connecting frame, a first slider is rotatably connected between two short arm ends of the connecting frame, the left end of the connecting plate is fixedly connected to a guide slide frame, and the first slider is slidably connected to the inside of the guide slide frame.

[0010] Furthermore, a drilling mechanism is provided inside the processing drill bit, and the drilling mechanism includes a first hydraulic rod fixedly connected to the bottom end of the rotating block, and a receiving groove is provided on the surface of the processing drill bit, and two connecting shafts are rotatably connected to the top end of the inner part of the receiving groove, and the surfaces of the two connecting shafts are fixedly sleeved with an unfolded cutter head.

[0011] Furthermore, a first rotating protrusion and a second rotating protrusion are fixedly connected on one side of the top end of the unfolded cutter head that is close to each other, the first rotating protrusion and the second rotating protrusion are rotatably connected, the top end of the second rotating protrusion is rotatably connected to a rotating frame, the output end of the first hydraulic rod is fixedly connected to a push rod, a bearing is fixedly connected between the rotating frame and the push rod, and the rotating frame and the push rod are rotatably connected via the bearing.

[0012] Furthermore, a chip breaking mechanism is provided inside the unfolded cutter head, and a plurality of cutter grooves are provided on the side of the two unfolded cutter heads away from each other. The chip breaking mechanism includes a chip breaker provided inside the cutter groove, and a slide groove is provided inside the cutter groove. Second sliders are fixedly connected on both sides of the chip breaker, and the second sliders are slidably connected to the inner wall of the slide groove inside the cutter groove.

[0013] Furthermore, a chip guard plate is fixedly connected to the surface of the chip breaker.

[0014] Furthermore, two push-off springs are fixedly connected to a side of the chip guard plate away from the chip breaker.

[0015] Furthermore, a magnet bar is fixedly connected to the interior of the processing drill bit, the chip guard plate is made of iron material and can be attracted by the magnetic force of the magnet bar, and the magnet bar is located between the two unfolded cutter heads.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) This solution can achieve power transmission through the cooperation of the first universal joint fork, the second universal joint fork and the cross shaft, ensuring that even if the processing drill bit is deflected, it can maintain the normal rotation processing function, so that the motor can smoothly drive the processing drill bit to rotate, and the displacement drive mechanism on the machine tool can synchronously control the drill bit to move and rotate. It can realize the opening of conical holes on the surface of steel parts, improving the flexibility and adaptability of the steel parts processing process.

[0017] (2) When processing conical holes on the surface of steel parts, this solution uses the second hydraulic rod as a power source to adjust the inclination angle of the processing drill bit, thereby achieving instant control of the inclination and then driving the processing drill bit to rotate, thereby performing processing operations on the steel parts. This not only greatly improves the accuracy of the conical hole opening, but also further enhances the flexibility of the conical hole processing process.

[0018] (3) When using a processing drill bit to process steel parts, this solution allows the two unfolded cutter heads to unfold, and the effective cutting structure formed by the processing drill bit and the unfolded cutter heads presents a conical shape. By adjusting the inclination angle of the processing drill bit and cooperating with the conical cutting structure, it is possible to achieve a wider range of control over the size of the conical hole, further improving the flexibility of the steel part processing process.

[0019] (4) In this solution, when the expansion cutter head is used to process steel parts, the chip breakers on the two expansion cutter heads will extend from the tool groove. When the expansion cutter head rotates, the chip breaker rotates synchronously. As the chip breaker rotates, the long cutting chips generated during the processing can be effectively broken up, thereby shortening the length of the chips and reducing the risk of expansion cutter head jamming due to excessively long chips. This effectively prevents the expansion cutter head from stopping or being damaged due to jamming, thereby ensuring a smooth and safe processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of a processing drill bit of the present invention; Figure 3 It is a schematic diagram of the structure of processing the interior of the drill bit of the present invention; Figure 4 It is a schematic diagram of the structure of the first gear and the second gear of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the structure of the cutter head of the present invention; Figure 7 This is a schematic diagram of the structure inside the cutter head of the present invention; Figure 8 For the present invention Figure 7Enlarged view of point B in the middle; Fig. 9 It is a schematic diagram of the structure of the first rotating protrusion and the second rotating protrusion of the present invention; Fig.10 It is a schematic structural diagram of the chip breaker part of the present invention.

[0021] Description of the numbers in the figure: 1. Drill bit connection part; 2. Processing drill bit; 301. Connection block; 302. Rotation block; 303. Suspension frame; 304. First hydraulic rod; 305. Push rod; 306. Expanding cutter head; 307. Bearing; 308. Rotation frame; 309. Connecting shaft; 310. Accommodation groove; 311. First rotation convex block; 312. Second rotation convex block; 313. Annular slide rail; 401. Suspension rod; 402. Second hydraulic rod; 403. Upper Rotating shaft; 404, lower rotating shaft; 405, first gear; 406, second gear; 407, connecting plate; 408, first universal joint fork; 409, middle rotating shaft; 410, cross shaft; 411, connecting frame; 412, first slider; 413, guide slide frame; 414, second universal joint fork; 501, magnet bar; 502, chip breaker; 503, knife groove; 504, second slider; 505, chip guard plate; 506, push-off spring. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-Figure 5A universal drill bit for steel processing, comprising a drill bit connection part 1 and a processing drill bit 2, wherein the bottom end of the drill bit connection part 1 is fixedly connected with a motor for providing power for the processing drill bit 2, and an angle adjustment mechanism, wherein the angle adjustment mechanism is arranged at the lower end of the drill bit connection part 1, and the angle adjustment mechanism comprises an upper rotating shaft 403, a lower rotating shaft 404, a middle rotating shaft 409 and a cross shaft 410, wherein the top end of the upper rotating shaft 403 is fixedly connected with the output shaft of the motor at the bottom end of the drill bit connection part 1, and the lower end of the upper rotating shaft 403 is fixedly connected with the output shaft of the motor at the bottom end of the drill bit connection part 1, and the lower end of the upper rotating shaft 403 is fixedly connected with the output shaft of the middle rotating shaft 410. 09, the upper end of each of the middle rotating shafts 409 is fixedly connected with a first universal joint fork 408, the lower end of each of the middle rotating shafts 409 and the upper end of each of the lower rotating shafts 404 are fixedly connected with a second universal joint fork 414, the two first universal joint forks 408 are rotationally connected via a cross shaft 410, the two second universal joint forks 414 are rotationally connected via a cross shaft 410, the cooperation of the first universal joint fork 408, the second universal joint fork 414 and the cross shaft 410 can realize power transmission, so that the processing drill bit 2 can realize normal rotation processing operation.

[0024] Among them, the bottom end of the lower rotating shaft 404 is rotatably connected with a connecting plate 407, and the lower rotating shaft 404 and the processing drill bit 2 can be synchronously deflected through the connecting plate 407. The processing drill bit 2 is rotatably connected to the right end of the connecting plate 407. The lower end of the lower rotating shaft 404 is fixedly sleeved with a first gear 405, and the top end of the processing drill bit 2 is sleeved with a second gear 406. The first gear 405 is meshed with the second gear 406, and the cooperation of the first gear 405 and the second gear 406 can realize power transmission. The bottom end of the drill bit connecting part 1 is fixedly connected with a connecting block 301, and the surface of the connecting block 301 is rotatably connected with a rotating block 302. The lower end of the rotating block 302 is fixedly connected with two suspension brackets 303, and the top end of the processing drill bit 2 is fixedly sleeved with an annular slide rail 313, and the lower ends of the two suspension brackets 303 are both slidably connected to the inside of the annular slide rail 313.

[0025] Among them, the bottom end of the drill bit connecting part 1 is fixedly connected with a suspension rod 401, and the lower end of the suspension rod 401 is fixedly connected with a second hydraulic rod 402, and the lower rotating shaft 404 and the processing drill bit 2 can be driven to tilt by the second hydraulic rod 402. The output shaft of the second hydraulic rod 402 is fixedly connected with a connecting frame 411, and a first slider 412 is rotatably connected between the two short arm ends of the connecting frame 411. The left end of the connecting plate 407 is fixedly connected with a guide slide frame 413, and the first slider 412 is slidably connected to the inside of the guide slide frame 413.

[0026] By adopting the above technical solution, when the processing drill bit 2 is used to process the steel part, the upper shaft 403 is driven to rotate by the motor providing power in the drill bit connecting part 1, and then the lower shaft 404 and its first gear 405 are driven to rotate, and then the second gear 406 is driven to rotate, and the processing drill bit 2 can be driven to rotate by the rotation of the second gear 406, so that the processing of the steel part can be achieved by the high-speed rotating processing drill bit 2. When a conical hole is opened on the surface of the steel part, the connecting plate 407 can be pushed to rotate by the second hydraulic rod 402, and the connecting plate 407 can be driven to rotate by the connecting plate 406. The connecting plate 407 drives the lower rotating shaft 404 and the processing drill bit 2 to tilt, and then drives the processing drill bit 2 to rotate. The displacement driving mechanism on the machine tool used to drive the displacement of the drill bit drives the processing drill bit 2 to shift and rotate, so as to realize the opening of conical holes on the surface of the steel part, and improve the flexibility of steel part processing. When the upper rotating shaft 403 rotates and the lower rotating shaft 404 is in a tilted state, the cooperation of the first universal joint fork 408, the second universal joint fork 414 and the cross shaft 410 can realize power transmission, so that the processing drill bit 2 can realize normal rotation processing operation.

[0027] like Figure 6-Figure 9 As shown, a drilling mechanism is arranged inside the processing drill bit 2, and the drilling mechanism includes a first hydraulic rod 304 fixedly connected to the bottom end of the rotating block 302, and the first hydraulic rod 304 can push the two unfolding cutter heads 306 to rotate and unfold around the connecting shaft 309 as the axis. A receiving groove 310 is provided on the surface of the processing drill bit 2, and the internal top end of the receiving groove 310 is rotatably connected to two connecting shafts 309, and the surfaces of the two connecting shafts 309 are fixedly sleeved with the unfolding cutter heads 306. The effective cutting structure formed by the processing drill bit 2 and the unfolding cutter heads 306 presents a conical shape, which improves the flexibility of steel processing.

[0028] Among them, the top of the unfolded cutter head 306 is fixedly connected with a first rotating protrusion 311 and a second rotating protrusion 312 on the side close to each other, the first rotating protrusion 311 and the second rotating protrusion 312 are rotatably connected, the top of the second rotating protrusion 312 is rotatably connected with a rotating frame 308, the output end of the first hydraulic rod 304 is fixedly connected with a push rod 305, a bearing 307 is fixedly connected between the rotating frame 308 and the push rod 305, and the rotating frame 308 and the push rod 305 are rotatably connected through the bearing 307.

[0029] By adopting the above technical solution, when the processing drill bit 2 is used to process the steel part, as the processing drill bit 2 drills into the interior of the steel part, the first hydraulic rod 304 pushes the push rod 305 downward, so that the push rod 305 pushes the first rotating protrusion 311 and the second rotating protrusion 312 downward, so that the two unfolding cutter heads 306 can be rotated and unfolded around the connecting shaft 309 as the axis, that is, when the processing drill bit 2 rotates, the two unfolding cutter heads 306 are driven to rotate, and the effective cutting structure formed by the processing drill bit 2 and the unfolding cutter head 306 presents a conical shape. By adjusting the inclination angle of the processing drill bit 2, it is possible to open a conical hole with greater size freedom, thereby further improving the flexibility of steel part processing.

[0030] like Figure 7 and Fig.10 As shown, a chip breaking mechanism is arranged inside the unfolding tool head 306, and a plurality of tool receiving grooves 503 are provided on the side of the two unfolding tool heads 306 that are away from each other. The chip breaking mechanism includes a chip breaker 502 arranged inside the tool receiving groove 503, and the chip breaker 502 can break the long strips of chips generated in the processing process to reduce the length of the chips. A slide groove is provided inside the tool receiving groove 503, and a second slider 504 is fixedly connected to both sides of the chip breaker 502, and the second slider 504 is slidably connected to the inner wall of the slide groove inside the tool receiving groove 503. A chip guard plate 505 is fixedly connected to the surface of the chip breaker 502, and the chip guard plate 505 can prevent chips from entering the space where the push-off spring 506 is located, causing the push-off spring 506 to be stuck and affecting the use.

[0031] Among them, the chip guard plate 505 is fixedly connected to one side away from the chip breaker 502 with two push-off springs 506, and the chip breaker 502 can be pushed out of the tool receiving groove 503 by the two push-off springs 506. The interior of the processing drill bit 2 is fixedly connected with a magnet bar 501. The chip guard plate 505 is made of iron material and can be attracted by the magnetic force of the magnet bar 501. When the two unfolded tool heads 306 are retracted into the receiving groove 310, the chip guard plate 505 and the magnet bar 501 are attracted to each other, which can drive the chip breaker 502 to retract into the tool receiving groove 503, so as to pull out the processing drill bit 2. The magnet bar 501 is located between the two unfolded tool heads 306.

[0032] By adopting the above technical solution, when the unfolding cutter head 306 is used to process the steel part, as the two unfolding cutter heads 306 are unfolded, the chip guard plate 505 is away from the magnet strip 501. Since the push-off spring 506 is in a compressed state, the chip breaker 502 can be pushed out of the cutter groove 503 by the push-off spring 506. When the unfolding cutter head 306 rotates, the multiple chip breakers 502 can be driven to rotate synchronously. As the chip breaker 502 rotates, the long strips of debris generated during the processing can be broken into pieces. The length of the chips is reduced to reduce the probability of the unfolded cutter head 306 being stuck due to the chips being too long, and to prevent the unfolded cutter head 306 from being stuck and stopping or being damaged. When the processing drill bit 2 is pulled out of the steel part and the chips do not need to be broken, as the two unfolded cutter heads 306 retract into the accommodating groove 310, the chip guard plate 505 approaches the magnet bar 501, and the chip guard plate 505 and the magnet bar 501 attract each other, thereby driving the chip breaker 502 to retract into the accommodating groove 503 to facilitate the extraction of the processing drill bit 2.

[0033] Usage: The motor in the drill bit connection part 1 drives the upper shaft 403 to rotate, and then drives the lower shaft 404 and its first gear 405 to rotate, and then drives the second gear 406 to rotate. The rotation of the second gear 406 drives the processing drill bit 2 to rotate to process the steel part.

[0034] The second hydraulic rod 402 is used to push the processing drill bit 2 to tilt, and then the processing drill bit 2 is driven to rotate. The displacement drive mechanism on the machine tool used to drive the displacement of the drill bit drives the processing drill bit 2 to shift and rotate, thereby realizing the opening of a conical hole on the surface of the steel part.

[0035] After the processing drill bit 2 drills into the interior of the steel part, the first hydraulic rod 304 pushes the push rod 305 downward, so that the push rod 305 pushes the first rotating protrusion 311 and the second rotating protrusion 312 downward, so that the two unfolding cutter heads 306 can rotate and unfold around the connecting shaft 309 as the axis, and the inclination angle of the processing drill bit 2 can be adjusted to achieve the opening of a tapered hole with greater size freedom.

[0036] As the two unfolding cutter heads 306 are unfolded, the push-off spring 506 pushes the chip breaker 502 to extend out of the cutter groove 503, and as the chip breaker 502 rotates, the long strips of debris generated during the machining process can be broken.

[0037] When the processing drill bit 2 is pulled out of the steel workpiece, the two unfolded tool heads 306 retract into the receiving groove 310, and the chip guard plate 505 and the magnet bar 501 attract each other, driving the chip breaker 502 to retract into the tool receiving groove 503, and the processing drill bit 2 can be pulled out.

[0038] The above is only a preferred specific implementation of the present invention; however, 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 solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A universal drill bit for steel processing, comprising a drill bit connection portion (1) and a processing drill bit (2), wherein a motor for providing power to the processing drill bit (2) is fixedly connected to the bottom end of the drill bit connection portion (1), and characterized in that: An angle adjustment mechanism, the angle adjustment mechanism is arranged at the lower end of the drill bit connection part (1), the angle adjustment mechanism comprises an upper rotating shaft (403), a lower rotating shaft (404), a middle rotating shaft (409) and a cross shaft (410), the top end of the upper rotating shaft (403) is fixedly connected to the output shaft of the motor at the bottom end of the drill bit connection part (1), the lower end of the upper rotating shaft (403) and the upper end of the middle rotating shaft (409) are both fixedly connected to a first universal joint fork (408), and the middle rotating shaft (410) is fixedly connected to the output shaft of the motor at the bottom end of the drill bit connection part (1). The lower end of the upper rotating shaft (409) and the upper end of the lower rotating shaft (404) are both fixedly connected with a second universal joint fork (414); the two first universal joint forks (408) are rotationally connected via a cross shaft (410); the two second universal joint forks (414) are rotationally connected via a cross shaft (410); the bottom end of the lower rotating shaft (404) is rotationally connected with a connecting plate (407); and the processing drill bit (2) is rotationally connected to the right end of the connecting plate (407).

2. A universal drill bit for steel processing according to claim 1, characterized in that: The lower end of the lower rotating shaft (404) is fixedly sleeved with a first gear (405), the top end of the processing drill bit (2) is sleeved with a second gear (406), and the first gear (405) is meshed with the second gear (406).

3. A universal drill bit for steel processing according to claim 1, characterized in that: The bottom end of the drill bit connecting part (1) is fixedly connected to a connecting block (301), the surface of the connecting block (301) is rotatably connected to a rotating block (302), the lower end of the rotating block (302) is fixedly connected to two suspension brackets (303), the top end of the processing drill bit (2) is fixedly sleeved with an annular slide rail (313), and the lower ends of the two suspension brackets (303) are both slidably connected to the inside of the annular slide rail (313).

4. A universal drill bit for steel processing according to claim 1, characterized in that: The bottom end of the drill bit connection part (1) is fixedly connected to a suspension rod (401), the lower end of the suspension rod (401) is fixedly connected to a second hydraulic rod (402), the output shaft of the second hydraulic rod (402) is fixedly connected to a connecting frame (411), a first sliding block (412) is rotatably connected between two short arm ends of the connecting frame (411), the left end of the connecting plate (407) is fixedly connected to a guide sliding frame (413), and the first sliding block (412) is slidably connected to the inside of the guide sliding frame (413).

5. The universal drill bit for steel processing according to claim 1, characterized in that: A drilling mechanism is arranged inside a processing drill bit (2), the drilling mechanism comprising a first hydraulic rod (304) fixedly connected to the bottom end of a rotating block (302), a receiving groove (310) being provided on the surface of the processing drill bit (2), two connecting shafts (309) being rotatably connected to the top end of the receiving groove (310), and a deployment cutter head (306) being fixedly sleeved on the surfaces of the two connecting shafts (309).

6. A universal drill bit for steel processing according to claim 5, characterized in that: A first rotating protrusion (311) and a second rotating protrusion (312) are fixedly connected to the sides of the top ends of the unfolding cutter heads (306) close to each other, the first rotating protrusion (311) and the second rotating protrusion (312) are rotatably connected, the top end of the second rotating protrusion (312) is rotatably connected to a rotating frame (308), the output end of the first hydraulic rod (304) is fixedly connected to a push rod (305), a bearing (307) is fixedly connected between the rotating frame (308) and the push rod (305), and the rotating frame (308) and the push rod (305) are rotatably connected via the bearing (307).

7. A universal drill bit for steel processing according to claim 5, characterized in that: A chip breaking mechanism is provided inside the unfolded cutter head (306), a plurality of cutter receiving grooves (503) are provided on the side of the two unfolded cutter heads (306) away from each other, the chip breaking mechanism comprises a chip breaker (502) provided inside the cutter receiving groove (503), a slide groove is provided inside the cutter receiving groove (503), second sliders (504) are fixedly connected to both sides of the chip breaker (502), and the second sliders (504) are slidably connected to the inner wall of the slide groove inside the cutter receiving groove (503).

8. A universal drill bit for steel processing according to claim 7, characterized in that: A chip guard plate (505) is fixedly connected to the surface of the chip breaker (502).

9. A universal drill bit for steel processing according to claim 8, characterized in that: Two push-off springs (506) are fixedly connected to a side of the chip guard plate (505) away from the chip breaker (502).

10. The universal drill bit for steel processing according to claim 8, characterized in that: A magnet bar (501) is fixedly connected to the interior of the processing drill bit (2); the chip guard plate (505) is made of iron and can be attracted by the magnetic force of the magnet bar (501); and the magnet bar (501) is located between the two unfolded cutter heads (306).

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