A drilling device for metal part production

Abstract

The present invention relates to the technical field of drilling equipment, and particularly relates to a drilling device for metal part production, which comprises a frame, a clamping mechanism, a drilling mechanism, a trimming ring and a transmission mechanism. The clamping mechanism clamps the part body, and the drilling mechanism drills the part. During the drilling process, the transmission mechanism drives the trimming ring to rotate and keeps the trimming ring tangent to the drill bit, so as to correct the part by using the trimming ring. A trimming edge is arranged on the peripheral wall of the trimming ring facing the part body. During the rotation of the trimming ring, the trimming edge cuts the burrs. Compared with the prior art, the present invention does not need to cut the burrs after taking the part off the processing platform, and after drilling thin plate parts, it is also not necessary to take them off and correct the deformation that occurs. On the premise of ensuring the processing quality, the processing process is reduced, thereby improving the drilling processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and particularly relates to a drilling device for metal part production. Background Art

[0002] A drilling device is a mechanical equipment specifically designed to create holes in various materials. Its core function is to use a rotating drill bit to act on the material to be processed at a certain speed and pressure, so as to accurately drill holes of the required size and shape. This device is widely used in many fields such as construction, manufacturing, and maintenance, and is one of the indispensable tools in industrial production and daily life. A drilling device usually consists of a motor, a transmission mechanism, a drill chuck, a drill bit, and a control system, etc. The motor provides power, and the power is transmitted to the drill chuck through the transmission mechanism. The drill chuck then clamps the drill bit and makes it rotate. The control system is used to adjust parameters such as the rotation speed of the motor, the feed speed of the drill bit, and the drilling depth to meet the requirements of different materials and processes.

[0003] During the drilling process, since the drill bit penetrates from one side of the metal part to the other side, and continuously performs unidirectional extrusion cutting on the drilled part of the metal part body during this process, burrs will be generated after drilling, which affects the processing quality of the metal part body, and the existence of burrs is likely to cause damage to the workpiece. Summary of the Invention

[0004] According to the deficiencies of the prior art, the present invention proposes a drilling device for metal part production, which solves the problem that burrs are generated on the part body after drilling in the prior art.

[0005] The drilling device for metal part production of the present invention adopts the following technical solutions: a frame, a clamping mechanism, a drilling mechanism, a trimming ring, and a transmission mechanism.

[0006] The frame is fixedly connected with a processing platform, the processing platform is horizontally arranged, and a receiving groove is arranged in the middle of the processing platform.

[0007] The clamping mechanism is located on one side of the processing platform and is used for clamping the part body.

[0008] The drilling mechanism includes a drilling main body, a drill bit, and a driving component; the drilling main body is connected to the frame, the drill bit is perpendicular to the processing platform, and is rotatably mounted on the drilling main body and can move axially; the driving component is installed in the drilling main body and is used to drive the drill bit to rotate around its own axis and approach the part body.

[0009] The trimming ring is arranged between the part body and the processing platform. A cutting hole is provided in the middle of the trimming ring, and trimming blades are arranged on the peripheral wall of one end of the cutting hole close to the part body; the trimming ring is rotatably and radially movablely mounted on the frame.

[0010] The transmission mechanism is used to drive the dressing ring to rotate while the drill bit rotates, and make the dressing edge tangent to the outer peripheral surface of the drill bit;

[0011] The transmission mechanism includes a pressure ring, a transmission disc, a telescopic rod, a plurality of first transmission magnetic blocks and a plurality of second transmission magnetic blocks; the pressure ring is located on the side of the part body away from the dressing ring; the transmission disc is rotatably installed on the drilling main body, the drill bit is fixedly connected to the transmission disc, and the driving assembly drives the transmission disc to rotate around the axis of the drill bit and move along the axis of the drill bit; there are a plurality of telescopic rods, the axes of the telescopic rods are parallel to the axis of the drill bit, one end of the telescopic rod is fixedly connected to the pressure ring, and the other end of the telescopic rod is fixedly connected to the transmission disc; the first transmission magnetic blocks and the second transmission magnetic blocks are installed on the end face of the pressure ring facing the part body and the end face of the dressing ring facing the part body; the magnetic poles of the first transmission magnetic blocks and the second transmission magnetic blocks facing the part body are opposite; the first transmission magnetic blocks and the second transmission magnetic blocks are fan-shaped;

[0012] The plurality of first transmission magnetic blocks and second transmission magnetic blocks on the pressure ring are alternately and evenly distributed along the circumference of the pressure ring and are fixedly installed on the pressure ring; the plurality of first transmission magnetic blocks and a plurality of second transmission magnetic blocks on the dressing ring are alternately and evenly distributed along the circumference of the dressing ring and are fixedly installed on the dressing ring; the first transmission magnetic blocks on the pressure ring are correspondingly arranged with the second transmission magnetic blocks on the dressing ring; the length of one of the first transmission magnetic blocks on the pressure ring in the radial direction of the pressure ring is greater than the lengths of the other first transmission magnetic blocks and second transmission magnetic blocks.

[0013] Optionally, at the tangent position of the dressing ring and the drill bit, the rotational linear velocity of the dressing ring is greater than or equal to the rotational linear velocity of the drill bit at the corresponding position.

[0014] Optionally, the clamping mechanism includes a synchronization component and a plurality of clamping members, and the plurality of clamping members are evenly distributed along the circumference of the drill bit; the clamping members are movably installed on the processing platform along the radial direction of the drill bit, and the synchronization component is used to drive the plurality of clamping members to move synchronously.

[0015] Optionally, the synchronization component includes a clamping motor, a driving wheel, a gear ring barrel and a plurality of transmission gears; the clamping motor is installed on the frame, the driving wheel is synchronously rotatably installed on the output shaft of the clamping motor; an external gear ring is synchronously rotatably connected to the outer circumference of the gear ring barrel, and the external gear ring meshes with the driving wheel; an internal gear ring is synchronously rotatably connected to the inner circumference of the gear ring barrel; the number of transmission gears is the same as the number of clamping members, the transmission gears are rotatably installed on the processing platform around their own axes and mesh with the internal gear ring; a rack is fixedly connected to the clamping member, the rack extends along the radial direction of the drill bit and meshes with the transmission gear.

[0016] Optionally, a lubrication and heat dissipation mechanism is provided on the dressing ring to apply a lubricating fluid to the part body during the drilling process.

[0017] Optionally, the lubricating and heat dissipating mechanism includes a plurality of liquid storage cavities, which are evenly distributed along the circumferential direction of the trimming ring. The liquid storage cavities are filled with lubricating liquid, the liquid outlet of the liquid storage cavity points to the part body, and the liquid storage cavity deforms under pressure.

[0018] Optionally, the trimming ring is detachably mounted on the frame.

[0019] Optionally, the drill bit is detachably connected to the transmission disc.

[0020] The beneficial effects of the present invention are as follows: A drilling device for metal part production according to the present invention clamps the part body through a clamping mechanism and drills the part body by using a drilling mechanism. The transmission mechanism drives the trimming ring to rotate and keeps the trimming ring tangent to the drill bit, so as to correct the part body by using the trimming ring. A trimming edge is provided on the circumferential wall of the trimming ring facing the part body. During the rotation of the trimming ring, the trimming edge cuts the burrs. Compared with the prior art, the present invention does not need to cut the burrs after removing the part body from the processing platform, and after drilling the thin plate type part body, it is also not necessary to remove it and correct the deformation that occurs. On the premise of ensuring the processing quality, the processing process is reduced, thereby improving the drilling processing efficiency.

[0021] Furthermore, the transmission mechanism drives the trimming ring to rotate while drilling, and further trims the part body while drilling, further improving the processing efficiency. And the rotation speed of the trimming ring is greater than that of the drill bit, so as to ensure that the trimming ring is not damaged by the drill bit, and the position where the trimming ring is tangent to the drill bit changes continuously, so as to avoid the trimming ring being worn at a single position, thereby improving the service life of the trimming ring.

[0022] Furthermore, by setting the lubricating and cooling mechanism, while the trimming ring trims the burrs and deformation of the part body, lubricating liquid is applied to the part body, reducing the friction between metals and lowering the temperature of the part body. Due to the eccentric rotation of the trimming ring, the trimming ring can evenly apply the lubricating liquid to the part body, further improving the heat dissipation efficiency. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic diagram of the overall structure of a drilling device for metal part production according to the present invention;

[0025] Figure 2 Front view of a drilling device for the production of metal parts according to the present invention;

[0026] Figure 3 is Figure 2 Cross-sectional view taken along line A-A in

[0027] Figure 4 is Figure 2 Cross-sectional view taken along line B-B in

[0028] Figure 5 is Figure 2 Cross-sectional view taken along line C-C in

[0029] Figure 6 is Figure 3 Enlarged view at X in

[0030] In the figure:

[0031] 100, frame; 110, processing platform; 111, receiving groove;

[0032] 200, clamping mechanism; 210, synchronization component; 211, driving wheel; 212, toothed ring barrel; 213, transmission gear; 220, clamping member;

[0033] 300, drilling mechanism; 310, drilling main body; 320, drill bit;

[0034] 400, trimming ring; 410, cutting hole;

[0035] 500, transmission mechanism; 510, pressing ring; 520, transmission disk; 530, telescopic rod; 540, first transmission magnetic block; 550, second transmission magnetic block;

[0036] 600, part body. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0038] As Figures 1 to 6 shown, a drilling device for the production of metal parts provided by an embodiment of the present invention includes a frame 100, a clamping mechanism 200, a drilling mechanism 300, a trimming ring 400, and a transmission mechanism 500;

[0039] The frame 100 is fixedly connected with a processing platform 110. The processing platform 110 is horizontally arranged, and a receiving groove 111 is arranged in the middle of the processing platform 110;

[0040] The clamping mechanism 200 is located above the processing platform 110 and is used to clamp the part body 600;

[0041] The drilling mechanism 300 includes a drilling main body 310 and a drill bit 320; the drilling main body 310 is connected to the machine frame 100, the drill bit 320 is perpendicular to the processing platform 110, the drill bit 320 is rotatable about its own axis and is axially movable and installed on the drilling main body 310; the drill bit 320 is connected with a driving assembly, the driving assembly is installed in the drilling main body 310, the driving assembly includes a driving motor and a transmission member, when the driving motor rotates, the transmission member drives the drill bit 320 to rotate about its own axis and approach the part body 600;

[0042] The trimming ring 400 is arranged between the part body 600 and the processing platform 110, a cutting hole 410 is formed in the middle of the trimming ring 400, and trimming edges are arranged on the peripheral wall at the upper end of the cutting hole 410; the trimming ring 400 is rotatable and radially movable and installed on the machine frame 100;

[0043] The transmission mechanism 500 is used to drive the trimming ring 400 to rotate while the drill bit 320 rotates and make the trimming edge tangent to the outer peripheral surface of the drill bit 320.

[0044] When drilling the part body 600, first place the part body 600 on the processing platform 110, the clamping mechanism 200 clamps the part body 600 to ensure that the part body 600 will not rotate or shake. After that, start the driving assembly, the driving assembly drives the drill bit 320 to rotate and approach the part body 600 at the same time. When the drill bit 320 penetrates through the part body 600, the drilling work is completed, and a through hole is drilled in the part body 600; the transmission mechanism 500 drives the trimming ring 400 to rotate and makes the peripheral wall of the trimming ring 400 tangent to the drill bit 320. During the rotation of the trimming ring 400, the trimming edge contacts the burrs at the edge of the through hole and cuts the burrs. After the burrs are separated from the part body 600, they enter the receiving groove 111. At the same time, the upper surface of the trimming ring 400 abuts against the lower surface of the part body 600, so as to correct the deformation of the part body 600 during the drilling process and make it return to its original shape.

[0045] Compared with the prior art, the present invention does not require the part body 600 to be removed from the processing platform 110 before cutting the burrs. After drilling the thin plate-like part body 600, it is also not necessary to remove it and correct the deformation that occurs. Instead, by setting the trimming ring 400, when the trimming ring 400 rotates, the trimming edge on it contacts the burrs on the part body 600 and relative movement occurs, thereby cutting the burrs on the part body 600. The deformed part body 600 is corrected by using the trimming ring 400 to restore its original shape. On the premise of ensuring the processing quality, the processing process is reduced, thereby improving the drilling processing efficiency. In addition, the transmission mechanism 500 in the present invention only causes the trimming ring 400 to rotate while the drill bit 320 rotates, reducing the manual start-stop link, and the rotation duration of the trimming ring 400 is the same as the rotation duration of the drill bit 320, saving the energy loss when the trimming ring 400 rotates alone before the drill bit 320 starts to rotate and after the drill bit stops rotating, and reducing the comprehensive cost.

[0046] In a further embodiment, the transmission mechanism 500 includes a pressure ring 510, a transmission disk 520, a telescopic rod 530, a plurality of first transmission magnetic blocks 540 and a plurality of second transmission magnetic blocks 550; the pressure ring 510 is located on the side of the part body 600 away from the trimming ring 400; the transmission disk 520 is rotatably installed on the drilling main body 310, the drill bit 320 is fixedly connected to the transmission disk 520, and the driving assembly drives the transmission disk 520 to rotate around the axis of the drill bit 320 and move along the axis of the drill bit 320; a plurality of telescopic rods 530 are provided, the axes of the telescopic rods 530 are parallel to the axis of the drill bit 320, one end of the telescopic rod 530 is fixedly connected to the pressure ring 510, and the other end of the telescopic rod 530 is fixedly connected to the transmission disk 520; the first transmission magnetic blocks 540 and the second transmission magnetic blocks 550 are installed on the end surface of the pressure ring 510 facing the part body 600 and the end surface of the trimming ring 400 facing the part body 600; the magnetic poles of the first transmission magnetic blocks 540 and the second transmission magnetic blocks 550 facing the part body 600 are opposite; the first transmission magnetic blocks 540 and the second transmission magnetic blocks 550 are fan-shaped;

[0047] A plurality of first driving magnetic blocks 540 and second driving magnetic blocks 550 on the pressing ring 510 are alternately and evenly distributed along the circumferential direction of the pressing ring 510 and are fixedly installed on the pressing ring 510; a plurality of first driving magnetic blocks 540 and a plurality of second driving magnetic blocks 550 on the trimming ring 400 are alternately and evenly distributed along the circumferential direction of the trimming ring 400 and are fixedly installed on the trimming ring 400; the first driving magnetic blocks 540 on the pressing ring 510 are correspondingly arranged with the second driving magnetic blocks 550 on the trimming ring 400; the pressing ring 510, the trimming ring 400, and the first driving magnetic blocks 540 and second driving magnetic belt blocks installed on the two together constitute a magnetic coupling, so that when the pressing ring 510 rotates, the trimming ring 400 rotates synchronously; the length of one of the first driving magnetic blocks 540 on the pressing ring 510 in the radial direction of the pressing ring 510 is greater than that of the other first driving magnetic blocks 540 and the second driving magnetic blocks 550.

[0048] During the drilling process, the driving assembly drives the transmission disc 520 to rotate around the axis of the drill bit 320 and move along the axis of the drill bit 320. The drill bit 320 rotates synchronously with the transmission disc 520 and moves towards the part body 600 to complete the drilling work; at the same time, the transmission disc 520 shortens the telescopic rod 530, and drives the pressing ring 510 to rotate synchronously through a plurality of telescopic rods 530. When the pressing ring 510 rotates, the first driving magnetic blocks 540 and the second driving magnetic blocks 550 on it rotate synchronously.

[0049] When the pressing ring 510 rotates relative to the trimming ring 400, the contact area between the first driving magnetic block 540 on the pressing ring 510 and the second driving magnetic block 550 on the trimming ring 400 decreases, and the contact area between the first driving magnetic block 540 on the pressing ring 510 and the first driving magnetic block 540 on the trimming ring 400 increases. Since there is a repulsive force between the first driving magnetic blocks 540 and an attractive force between the first driving magnetic block 540 and the second driving magnetic block 550, when the pressing ring 510 rotates, it drives the trimming ring 400 to rotate synchronously.

[0050] However, since the length of one of the first driving magnetic blocks 540 on the pressing ring 510 in the radial direction of the pressing ring 510 is greater than that of the other first driving magnetic blocks 540 and the second driving magnetic blocks 550, the magnetism of this first driving magnetic block 540 is greater than that of the other first driving magnetic blocks 540 and the second driving magnetic blocks 550; the trimming ring 400 is in an unbalanced stress state, and the first driving magnetic block 540 with greater magnetism gives the trimming ring 400 an attractive force to move in this direction, so that the axis of the trimming ring 400 deviates from the axis of the pressing ring 510 and is in an eccentric state. After the drill bit 320 extends out of the part body 600, the drill bit 320 gives the trimming ring 400 a thrust in the radial direction. Under the action of the magnetic force and the thrust of the drill bit 320, the trimming edge opposite to the first driving magnetic block 540 with greater magnetic force is always tangent to the drill bit 320.

[0051] In a further embodiment, at the tangential position of the dressing ring 400 and the drill bit 320, the rotational linear velocity of the dressing ring 400 is greater than or equal to the rotational linear velocity of the corresponding position of the drill bit 320.

[0052] When the linear velocities of the two at the tangential position are the same, there is no relative movement between the dressing ring 400 and the drill bit 320. During rotation, the drilling edges on the peripheral wall of the drill bit 320 will not cut the dressing ring 400.

[0053] When the linear velocity of the dressing ring 400 at the tangential position is greater than that of the drill bit 320, the rotation of the drill bit 320 lags behind that of the dressing ring 400. During rotation, it is ensured that the drilling edges on the peripheral wall of the drill bit 320 will not cut the dressing ring 400. Refer to Figure 3 , a plurality of telescopic rods 530 are evenly distributed along the circumferential direction of the transmission disk 520 and are located on the outer periphery of the drill bit 320. Thus, during the drilling process, since both the drill bit 320 and the telescopic rods 530 rotate synchronously with the transmission disk 520, the angular velocities of the telescopic rods 530 and the drill bit 320 are equal during rotation. Since the dressing ring 400 and the pressing ring 510 rotate synchronously, and the dressing edge is outside the drill bit 320, during rotation, the rotational linear velocity of the drill bit 320 is less than that of the dressing edge, and the drill bit 320 lags behind the dressing edge, thereby ensuring that the dressing ring 400 performs cutting, ensuring that the dressing edge can be used normally, and further ensuring the drilling effect.

[0054] In a further embodiment, the clamping mechanism 200 includes a synchronization assembly 210 and a plurality of clamping members 220. The plurality of clamping members 220 are evenly distributed along the circumferential direction of the drill bit 320; the clamping members 220 are movably mounted on the processing platform 110 along the radial direction of the drill bit 320, and the synchronization assembly 210 is used to drive the plurality of clamping members 220 to move synchronously.

[0055] In a further embodiment, the synchronization assembly 210 includes a clamping motor, a driving wheel 211, a toothed ring barrel 212, and a plurality of transmission gears 213; the clamping motor is mounted on the frame 100, and the driving wheel 211 is synchronously rotatably mounted on the output shaft of the clamping motor; an external toothed ring is synchronously rotatably connected to the outer periphery of the toothed ring barrel 212, and the external toothed ring meshes with the driving wheel 211; an internal toothed ring is synchronously rotatably connected to the inner periphery of the toothed ring barrel 212; the number of transmission gears 213 is the same as the number of clamping members 220. The transmission gears 213 are rotatably mounted on the processing platform 110 around their own axes and mesh with the internal toothed ring; a rack is fixedly connected to the clamping member 220, the rack extends along the radial direction of the drill bit 320, and meshes with the transmission gear 213.

[0056] Before drilling, start the clamping motor. The clamping motor drives the driving wheel 211 to rotate synchronously. The driving wheel 211 drives the gear ring barrel 212 to rotate through the external gear ring, and then drives the internal gear ring to rotate. When the internal gear ring rotates, multiple transmission gears 213 rotate around their own axes respectively. Since the transmission gears 213 are engaged with the rack, when the transmission gears 213 rotate, the clamping member 220 is driven to move inward along the radial direction of the drill bit 320 through the rack, thereby clamping the part body 600. After drilling is completed, reverse the rotation of the clamping motor. Under the action of the driving wheel 211, the external gear ring, the gear ring barrel 212, the internal gear ring, and the transmission gears 213, the clamping member 220 moves outward along the radial direction of the drill bit 320. Thereafter, the operator removes the part body 600 from the processing platform 110 to complete the drilling work on the part body 600.

[0057] In a further embodiment, a lubrication and heat dissipation mechanism is provided on the dressing ring 400. The lubrication and heat dissipation mechanism includes a plurality of liquid storage cavities, which are evenly distributed along the circumferential direction of the dressing ring 400 and are installed on the upper surface of the dressing ring 400 facing. The liquid storage cavities are filled with lubricating liquid, and the liquid outlet of the liquid storage cavity points to the part body 600. The liquid storage cavity is deformed under pressure, so as to apply the lubricating liquid to the part body 600 during the drilling process, reduce the temperature of the part body 600, avoid deformation of the part body 600 in a high-temperature environment, and ensure the processing quality; at the same time, reduce the friction between metals and extend the service life of the drilling device. And due to the eccentric rotation of the dressing ring 400, the dressing ring 400 can evenly apply the lubricating liquid to the lower surface of the part body 600, further improving the heat dissipation efficiency.

[0058] In a further embodiment, the dressing ring 400 is detachably installed on the frame 100; when the dressing edge tangent to the drill bit 320 cannot dress the burrs in time, the operator can remove the dressing ring 400, rotate it by a preset angle, and then reinstall it, thus solving the problem that the dressing ring 400 is worn at a single position and the burrs cannot be dressed in time, and improving the service life of the dressing ring 400. When the dressing edge cannot cut the burrs in time, the maintenance personnel can quickly remove the dressing ring 400 from the frame 100 for maintenance or replacement.

[0059] In a further embodiment, the drill bit 320 is detachably fixedly connected to the transmission disk 520. The processing personnel can replace the corresponding drill bit 320 according to the processing requirements.

[0060] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drilling device for metal part production, characterized in that, It includes a frame, a clamping mechanism, a drilling mechanism, a trimming ring and a transmission mechanism: The frame is fixedly connected with a processing platform, the processing platform is horizontally arranged, and a receiving groove is arranged in the middle of the processing platform; The clamping mechanism is located on one side of the processing platform and is used for clamping the part body; The drilling mechanism includes a drilling main body, a drill bit and a driving component; the drilling main body is connected to the frame, the drill bit is perpendicular to the processing platform, and is rotatably mounted on the drilling main body around its own axis and can move axially; the driving component is mounted in the drilling main body and is used for driving the drill bit to rotate around its own axis and approach the part body; The trimming ring is arranged between the part body and the processing platform. A cutting hole is provided in the middle of the trimming ring, and trimming blades are arranged on the peripheral wall of one end of the cutting hole close to the part body; the trimming ring is rotatably and radially movable along its own axis and is mounted on the frame; The transmission mechanism is used for driving the trimming ring to rotate while the drill bit rotates, and making the trimming blade tangent to the outer peripheral surface of the drill bit; The transmission mechanism includes a pressure ring, a transmission disc, a telescopic rod, a plurality of first transmission magnetic blocks and a plurality of second transmission magnetic blocks; the pressure ring is located on the side of the part body away from the trimming ring; the transmission disc is rotatably mounted on the drilling main body, the drill bit is fixedly connected to the transmission disc, and the driving component drives the transmission disc to rotate around the axis of the drill bit and move along the axis of the drill bit; a plurality of telescopic rods are provided, the axis of the telescopic rod is parallel to the axis of the drill bit, one end of the telescopic rod is fixedly connected to the pressure ring, and the other end of the telescopic rod is fixedly connected to the transmission disc; the first transmission magnetic blocks and the second transmission magnetic blocks are mounted on the end face of the pressure ring facing the part body and the end face of the trimming ring facing the part body; the magnetic poles of the first transmission magnetic blocks and the second transmission magnetic blocks facing the part body are opposite; the first transmission magnetic blocks and the second transmission magnetic blocks are fan-shaped; The plurality of first transmission magnetic blocks and second transmission magnetic blocks on the pressure ring are alternately and evenly distributed along the circumferential direction of the pressure ring and are fixedly mounted on the pressure ring; the plurality of first transmission magnetic blocks and the plurality of second transmission magnetic blocks on the trimming ring are alternately and evenly distributed along the circumferential direction of the trimming ring and are fixedly mounted on the trimming ring; the first transmission magnetic blocks on the pressure ring are correspondingly arranged with the second transmission magnetic blocks on the trimming ring; the length of one of the first transmission magnetic blocks on the pressure ring in the radial direction of the pressure ring is greater than the lengths of the other first transmission magnetic blocks and the second transmission magnetic blocks.

2. A drilling device for producing metal parts according to claim 1, characterized in that, At the tangent position of the trimming ring and the drill bit, the rotational linear velocity of the trimming ring is greater than or equal to the rotational linear velocity of the drill bit at the corresponding position.

3. A drilling device for producing metal parts according to claim 1, characterized in that, The clamping mechanism includes a synchronization component and a plurality of clamping pieces, and the plurality of clamping pieces are evenly distributed along the circumferential direction of the drill bit; the clamping pieces are rotatably mounted on the processing platform along the radial direction of the drill bit, and the synchronization component is used for driving the plurality of clamping pieces to move synchronously.

4. A drilling device for manufacturing metal parts according to claim 3, characterized in that, The synchronization component includes a clamping motor, a driving wheel, a toothed ring barrel and a plurality of transmission gears; the clamping motor is mounted on the frame, the driving wheel is synchronously rotatably mounted on the output shaft of the clamping motor; an external toothed ring is synchronously rotatably connected to the outer periphery of the toothed ring barrel, and the external toothed ring meshes with the driving wheel; an internal toothed ring is synchronously rotatably connected to the inner periphery of the toothed ring barrel; the number of transmission gears is the same as the number of clamping pieces, the transmission gears are rotatably mounted on the processing platform around their own axes and mesh with the internal toothed ring; a rack is fixedly connected to the clamping piece, the rack extends along the radial direction of the drill bit and meshes with the transmission gear.

5. A drilling device for manufacturing metal parts according to claim 1, characterized in that, A lubricating and heat dissipating mechanism is provided on the dressing ring to apply lubricating fluid to the part body during the drilling process.

6. The drilling device for metal part production according to claim 5, characterized in that, The lubricating and heat dissipating mechanism includes a plurality of liquid storage cavities, which are evenly distributed along the circumferential direction of the dressing ring. The liquid storage cavities are filled with lubricating fluid, the liquid outlet of the liquid storage cavity points to the part body, and the liquid storage cavity deforms under pressure.

7. A drilling device for producing metal parts according to claim 1, characterized in that, The dressing ring is detachably installed on the frame.

8. A drilling device for producing metal parts according to claim 1, characterized in that, The drill bit is detachably connected to the drive disk.

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