Drilling device for metal part production

Abstract

The invention relates to the technical field of drilling equipment, in particular to a drilling device for metal part production, which comprises a rack, a clamping mechanism, a drilling mechanism, a finishing ring and a transmission mechanism. The clamping mechanism clamps a part body, the drilling mechanism drills a part, in the drilling process, the transmission mechanism drives the dressing ring to rotate, the dressing ring and a drill bit are kept in a tangent state, and therefore the dressing ring is used for correcting the part, a dressing blade is arranged on the peripheral wall, facing the part body, of the dressing ring, and in the rotating process of the dressing ring, the dressing blade is arranged on the dressing ring. Compared with the prior art, the deburring device has the advantages that the deburring device does not need to cut the burrs after the parts are taken down from a machining platform, and after the thin-plate parts are drilled, deformation of the thin-plate parts does not need to be corrected after the thin-plate parts are taken down; and on the premise that the machining quality is guaranteed, the machining procedures are reduced, and therefore the drilling machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, and in particular to a drilling device for producing metal parts. Background Art

[0002] A drilling device is a mechanical device specially designed to create holes in various materials. Its core function is to accurately drill holes of the required size and shape by acting on the material being processed with a rotating drill bit at a certain speed and pressure. 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. The motor provides power and transmits the power to the drill chuck through the transmission mechanism. The drill chuck clamps the drill bit and rotates it. The control system is used to adjust parameters such as the motor speed, the drill bit feed speed, and the depth of the hole to meet the needs 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, the drilling part of the metal part body is continuously extruded and cut in one direction during this process, so burrs will be generated after the drilling is completed, affecting the processing quality of the metal part body, and the presence of burrs can easily cause damage to the workpiece. Summary of the invention

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

[0005] A drilling device for metal parts production of the present invention adopts the following technical solution, including: 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 to clamp the part body; The drilling mechanism comprises a drilling body, a drill bit and a driving assembly; the drilling body is connected to the frame, the drill bit is perpendicular to the processing platform, and can be rotated around its own axis and can be axially moved and installed on the drilling body; the driving assembly is installed in the drilling body, and the driving assembly is used to drive the drill bit to rotate around its own axis and approach the part body; A trimming ring is arranged between the part body and the processing platform, a cutting hole is opened in the middle of the trimming ring, and a trimming blade is arranged on the peripheral wall of the cutting hole close to one end of the part body; the trimming ring is rotatably and movably installed on the frame along its own radial direction; The transmission mechanism is used to drive the dressing ring to rotate while the drill bit rotates, and to make the dressing edge tangent to the outer peripheral surface of the drill bit.

[0006] Optionally, the transmission mechanism includes a pressure ring, a transmission disk, 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 disk is rotatably installed on the drilling body, the drill bit is fixedly connected to the transmission disk, and the driving assembly drives the transmission disk to rotate around the drill bit axis and move along the drill bit axis; a plurality of telescopic rods are provided, the axis of the telescopic rod is parallel to the drill bit axis, 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 disk; the first transmission magnetic block and the second transmission magnetic block are installed on the end surface of the pressure ring facing the part body and the end surface of the trimming ring facing the part body; the magnetic poles of the first transmission magnetic block and the second transmission magnetic block facing the part body are opposite; the first transmission magnetic block and the second transmission magnetic block are fan-shaped; The multiple first transmission magnetic blocks and the second transmission magnetic blocks on the pressure ring are alternately and evenly distributed along the circumference of the pressure ring and fixedly installed on the pressure ring; the multiple first transmission magnetic blocks and the multiple second transmission magnetic blocks on the trimming ring are alternately and evenly distributed along the circumference of the trimming ring and fixedly installed 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 length of the other first transmission magnetic blocks and the second transmission magnetic blocks.

[0007] Optionally, at a position where the dressing ring is tangent to the drill bit, the rotational linear speed of the dressing ring is greater than or equal to the rotational linear speed of the drill bit at a corresponding position.

[0008] Optionally, the clamping mechanism includes a synchronization component and multiple clamping members, and the multiple clamping members are evenly distributed along the circumference of the drill bit; the clamping members can be installed on the processing platform so as to be movable along the radial direction of the drill bit, and the synchronization component is used to drive the multiple clamping members to move synchronously.

[0009] Optionally, the synchronization component includes a clamping motor, a driving wheel, a ring gear barrel and multiple transmission gears; the clamping motor is installed on the frame, and the driving wheel is synchronously rotatably installed on the output shaft of the clamping motor; the outer periphery of the ring gear barrel is synchronously rotatably connected with an outer ring gear, and the outer ring gear is meshed with the driving wheel; the inner periphery of the ring gear barrel is synchronously rotatably connected with an inner ring gear; the number of transmission gears is consistent with the number of clamping members, and the transmission gear is rotatably installed on the processing platform around its own axis and meshed with the inner ring gear; the clamping member is fixedly connected with a rack, which extends along the radial direction of the drill bit and meshes with the transmission gear.

[0010] Optionally, a lubrication and heat dissipation mechanism is provided on the trimming ring to apply lubricating liquid to the part body during the drilling process.

[0011] Optionally, the lubrication and heat dissipation mechanism includes a plurality of liquid storage chambers, which are evenly distributed along the circumference of the trimming ring, the liquid storage chambers are filled with lubricating liquid, the liquid outlets of the liquid storage chambers point to the part body, and the liquid storage chambers are deformed under pressure.

[0012] Optionally, the trimming ring is removably mounted to the frame.

[0013] Optionally, the drill bit is detachably connected to the drive disc.

[0014] The beneficial effects of the present invention are as follows: the drilling device for metal parts production of the present invention clamps the part body through the clamping mechanism, and uses the drilling mechanism to drill the part body. The transmission mechanism drives the trimming ring to rotate, and keeps the trimming ring and the drill bit in a tangent state, so that the trimming ring is used to correct the part body. The trimming ring is provided with a trimming blade on the peripheral wall facing the part body. During the rotation of the trimming ring, the trimming blade cuts the burrs. Compared with the prior art, the present invention does not need to remove the part body from the processing platform before cutting the burrs, and after drilling the thin plate part body, it is not necessary to remove it to correct the deformation; under the premise of ensuring the processing quality, the processing flow is reduced, thereby improving the drilling processing efficiency.

[0015] Furthermore, the transmission mechanism drives the trimming ring to rotate while drilling, and then trims the part body while drilling, further improving the processing efficiency. The rotation speed of the trimming ring is greater than the rotation speed of the drill bit, thereby ensuring that the trimming ring will not be damaged by the drill bit, and the position where the trimming ring is tangent to the drill bit is constantly changed, thereby avoiding wear on a single position of the trimming ring, thereby increasing the service life of the trimming ring.

[0016] Furthermore, by providing a lubrication and cooling mechanism, while the trimming ring trims the burrs and deformation of the part body, lubricating liquid is applied to the part body to reduce the friction between metals and reduce 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a drilling device for metal parts production according to the present invention; Figure 2 It is a front view of a drilling device for metal parts production according to the present invention; Figure 3 for Figure 2 Middle AA section cutaway view; Figure 4 for Figure 2 Middle BB section cutaway view; Figure 5 for Figure 2 Middle CC section cutaway view; Figure 6 for Figure 3 Enlarged image at the center X.

[0019] In the figure: 100, frame; 110, processing platform; 111, receiving tank; 200, clamping mechanism; 210, synchronization assembly; 211, driving wheel; 212, gear ring barrel; 213, transmission gear; 220, clamping member; 300, drilling mechanism; 310, drilling body; 320, drill bit; 400, trimming ring; 410, cutting hole; 500, transmission mechanism; 510, pressure ring; 520, transmission plate; 530, telescopic rod; 540, first transmission magnetic block; 550, second transmission magnetic block; 600. Part body. DETAILED DESCRIPTION

[0020] 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 making creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 6 As shown, a drilling device for metal parts production 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; 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; The clamping mechanism 200 is located on the upper side of the processing platform 110 and is used to clamp the part body 600; The drilling mechanism 300 includes a drilling body 310 and a drill bit 320; the drilling body 310 is connected to the frame 100, the drill bit 320 is perpendicular to the processing platform 110, and the drill bit 320 can rotate around its own axis and can be axially movably installed on the drilling body 310; the drill bit 320 is connected to a driving assembly, which is installed in the drilling 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 around its own axis and approach the part body 600; The trimming ring 400 is arranged between the part body 600 and the processing platform 110. A cutting hole 410 is opened in the middle of the trimming ring 400. A trimming blade is arranged on the peripheral wall of the upper end of the cutting hole 410. The trimming ring 400 is rotatably and movably installed on the frame 100 along its own radial direction. The transmission mechanism 500 is used to drive the trimming ring 400 to rotate while the drill bit 320 rotates, and to make the trimming edge tangent to the outer peripheral surface of the drill bit 320 .

[0022] When drilling the part body 600, the part body 600 is first placed on the processing platform 110, and the clamping mechanism 200 clamps the part body 600 to ensure that the part body 600 does not rotate or shake. Then, the driving assembly is started, and the driving assembly drives the drill bit 320 to rotate and approach the part body 600. When the drill bit 320 passes through the part body 600, the drilling work is completed and the part body 600 is drilled out of the through hole; 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 blade contacts the burr on the edge of the through hole and cuts the burr. After the burr is separated from the part body 600, it enters 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, thereby correcting the deformation of the part body 600 during the drilling process and restoring its original shape.

[0023] Compared with the prior art, the present invention does not need to remove the part body 600 from the processing platform 110 before cutting the burrs. After drilling the thin plate part body 600, it is not necessary to remove it and correct the deformation. Instead, the trimming ring 400 is set. When the trimming ring 400 rotates, the trimming blade on it contacts the burrs on the part body 600 and moves relative to each other, thereby cutting the burrs on the part body 600. The trimming ring 400 is used to correct the deformed part body 600 to restore its original shape. Under the premise of ensuring the processing quality, the processing flow 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 when the drill bit 320 rotates, reducing the manual start and stop links, and the rotation time of the trimming ring 400 is consistent with the rotation time of the drill bit 320, eliminating the energy loss when the trimming ring 400 rotates alone before the drill bit 320 starts to rotate and after the brick stops rotating, thereby reducing the overall cost.

[0024] 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 mounted on the drilling 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; the telescopic rod 530 is provided with a plurality of telescopic rods, The axis of 530 is 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 plate 520; the first transmission magnetic block 540 and the second transmission magnetic block 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 block 540 and the second transmission magnetic block 550 facing the part body 600 are opposite; the first transmission magnetic block 540 and the second transmission magnetic block 550 are fan-shaped; The multiple first transmission magnetic blocks 540 and the second transmission magnetic blocks 550 on the pressure ring 510 are alternately evenly distributed along the circumference of the pressure ring 510 and fixedly installed on the pressure ring 510; the multiple first transmission magnetic blocks 540 and the multiple second transmission magnetic blocks 550 on the trimming ring 400 are alternately evenly distributed along the circumference of the trimming ring 400 and fixedly installed on the trimming ring 400; the first transmission magnetic block 540 on the pressure ring 510 is correspondingly arranged with the second transmission magnetic block 550 on the trimming ring 400; the pressure ring 510, the trimming ring 400 and the first transmission magnetic block 540 and the second transmission belt magnetic block installed on the two together constitute a magnetic coupling, so that when the pressure ring 510 rotates, the trimming ring 400 rotates synchronously; the length of one of the first transmission magnetic blocks 540 on the pressure ring 510 in the radial direction of the pressure ring 510 is greater than that of the other first transmission magnetic blocks 540 and the second transmission magnetic blocks 550.

[0025] 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 toward the part body 600 to complete the drilling work; at the same time, the transmission disc 520 shortens the telescopic rods 530 and drives the pressing ring 510 to rotate synchronously through the multiple telescopic rods 530. When the pressing ring 510 rotates, the first transmission magnetic block 540 and the second transmission magnetic block 550 on it rotate synchronously.

[0026] When the pressure ring 510 rotates relative to the trimming ring 400, the contact area between the first transmission magnet 540 on the pressure ring 510 and the second transmission magnet 550 on the trimming ring 400 decreases, and the contact area between the first transmission magnet 540 on the pressure ring 510 and the first transmission magnet 540 on the trimming ring 400 increases. Since there is a repulsive force between the first transmission magnet 540 and the first transmission magnet 540, and an attractive force between the first transmission magnet 540 and the second transmission magnet 550, when the pressure ring 510 rotates, it drives the trimming ring 400 to rotate synchronously.

[0027] However, since the length of one of the first transmission magnetic blocks 540 on the pressure ring 510 in the radial direction of the pressure ring 510 is greater than that of the other first transmission magnetic blocks 540 and the second transmission magnetic blocks 550, the magnetism of the first transmission magnetic block 540 is greater than that of the other first transmission magnetic blocks 540 and the second transmission magnetic blocks 550; the trimming ring 400 is in a state of unbalanced force, and the first transmission magnetic block 540 with greater magnetism gives the trimming ring 400 a gravitational force to move in that direction, so that the axis of the trimming ring 400 deviates from the axis of the pressure 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 of the trimming ring 400 opposite to the first transmission magnetic block 540 with greater magnetism is always tangent to the drill bit 320.

[0028] In a further embodiment, at a position where the trimming ring 400 is tangent to the drill bit 320 , the rotational linear velocity of the trimming ring 400 is greater than or equal to the rotational linear velocity of the drill bit 320 at a corresponding position.

[0029] When the linear speeds of the two at the tangent position are the same, the trimming ring 400 and the drill bit 320 will not move relative to each other, and during the rotation process, the drilling edge on the peripheral wall of the drill bit 320 will not cut the trimming ring 400; When the linear velocity of the trimming ring 400 at the tangential position is greater than the linear velocity of the drill bit 320, the rotation of the drill bit 320 lags behind the trimming ring 400. During the rotation process, it is ensured that the drilling edge on the peripheral wall of the drill bit 320 does not cut the trimming ring 400; Figure 3 , multiple telescopic rods 530 are evenly distributed along the circumference of the transmission disk 520 and are located on the outer periphery of the drill bit 320. Therefore, during the drilling process, since the drill bit 320 and the telescopic rods 530 rotate synchronously with the transmission disk 520, the telescopic rods 530 and the drill bit 320 have the same angular velocity when they rotate. Since the trimming ring 400 and the pressure ring 510 rotate synchronously, and the trimming blade is on the outside of the drill bit 320, during the rotation process, the linear velocity of the drill bit 320 is less than the linear velocity of the trimming blade, and the drill bit 320 lags behind the trimming blade, thereby ensuring that the trimming ring 400 can perform cutting, ensuring that the trimming blade can be used normally, and then ensuring the drilling effect.

[0030] In a further embodiment, the clamping mechanism 200 includes a synchronization component 210 and a plurality of clamping members 220, and the plurality of clamping members 220 are evenly distributed along the circumference of the drill bit 320; the clamping members 220 can be installed on the processing platform 110 to move radially along the drill bit 320, and the synchronization component 210 is used to drive the plurality of clamping members 220 to move synchronously; In a further embodiment, the synchronization component 210 includes a clamping motor, a driving wheel 211, a ring gear 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 and rotatably mounted on the output shaft of the clamping motor; the outer periphery of the ring gear barrel 212 is synchronously and rotatably connected with an outer ring gear, and the outer ring gear is meshed with the driving wheel 211; the inner periphery of the ring gear barrel 212 is synchronously and rotatably connected with an inner ring gear; the number of transmission gears 213 is consistent with the number of clamping members 220, and the transmission gear 213 is rotatably mounted on the processing platform 110 around its own axis and meshed with the inner ring gear; the clamping member 220 is fixedly connected with a rack, and the rack extends along the radial direction of the drill bit 320 and meshes with the transmission gear 213; Before drilling, the clamping motor is started, and 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 outer gear ring, and then drives the inner gear ring to rotate. When the inner gear ring rotates, the multiple transmission gears 213 rotate around their own axes respectively. Since the transmission gear 213 is meshed with the rack, when the transmission gear 213 rotates, the clamping member 220 is driven to move radially inward along the drill bit 320 through the rack, thereby clamping the part body 600. After the drilling is completed, the clamping motor is rotated in the opposite direction. Under the action of the driving wheel 211, the outer gear ring, the gear ring barrel 212, the inner gear ring, and the transmission gear 213, the clamping member 220 moves radially outward along the drill bit 320. After that, the operator removes the part body 600 from the processing platform 110, and the drilling of the part body 600 is completed.

[0031] In a further embodiment, a lubricating and heat dissipating mechanism is provided on the trimming ring 400, and the lubricating and heat dissipating mechanism includes a plurality of liquid storage chambers, which are evenly distributed along the circumference of the trimming ring 400 and installed on the upper surface of the trimming ring 400. The liquid storage chamber is filled with lubricating liquid, and the liquid outlet of the liquid storage chamber points to the part body 600. The liquid storage chamber is deformed under pressure, so that the lubricating liquid is applied to the part body 600 during the drilling process, the temperature of the part body 600 is reduced, and the deformation of the part body 600 is avoided in a high temperature environment, thereby ensuring the processing quality; at the same time, the friction between metals is reduced, and the service life of the drilling device is extended. And due to the eccentric rotation of the trimming ring 400, the trimming ring 400 can evenly apply the lubricating liquid to the lower surface of the part body 600, further improving the heat dissipation efficiency.

[0032] In a further embodiment, the trimming ring 400 is detachably mounted on the frame 100; when the trimming blade tangent to the drill bit 320 cannot trim the burr in time, the operator can remove the trimming ring 400, rotate it by a preset angle, and reinstall it, thereby solving the problem of a single position of the trimming ring 400 being worn and the burr being trimmed in time, and improving the service life of the trimming ring 400. When the trimming blade cannot cut the burr in time, the maintenance personnel can quickly remove the trimming ring 400 from the frame 100 for maintenance or replacement.

[0033] In a further embodiment, the drill bit 320 is detachably fixedly connected to the transmission plate 520. Processing personnel can replace the corresponding drill bit 320 according to processing requirements.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling device for metal parts production, characterized in that: include: 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 to clamp the part body; The drilling mechanism comprises a drilling body, a drill bit and a driving assembly; the drilling body is connected to the frame, the drill bit is perpendicular to the processing platform, and can be rotated around its own axis and can be axially moved and installed on the drilling body; the driving assembly is installed in the drilling body, and the driving assembly is used to drive the drill bit to rotate around its own axis and approach the part body; A trimming ring is arranged between the part body and the processing platform, a cutting hole is opened in the middle of the trimming ring, and a trimming blade is arranged on the peripheral wall of the cutting hole close to one end of the part body; the trimming ring is rotatably and movably installed on the frame along its own radial direction; The transmission mechanism is used to drive the dressing ring to rotate while the drill bit rotates, and to make the dressing edge tangent to the outer peripheral surface of the drill bit.

2. A drilling device for metal parts production according to claim 1, characterized in that: The transmission mechanism comprises 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 installed on the drilling body, the drill bit is fixedly connected to the transmission disc, and the driving assembly drives the transmission disc to rotate around the drill bit axis and move along the drill bit axis; a plurality of telescopic rods are provided, the axis of the telescopic rod is parallel to the drill bit axis, 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 block and the second transmission magnetic block are installed on the end surface of the pressure ring facing the part body and the end surface of the trimming ring facing the part body; the magnetic poles of the first transmission magnetic block and the second transmission magnetic block facing the part body are opposite; the first transmission magnetic block and the second transmission magnetic block are fan-shaped; The multiple first transmission magnetic blocks and the second transmission magnetic blocks on the pressure ring are alternately and evenly distributed along the circumference of the pressure ring and fixedly installed on the pressure ring; the multiple first transmission magnetic blocks and the multiple second transmission magnetic blocks on the trimming ring are alternately and evenly distributed along the circumference of the trimming ring and fixedly installed 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 length of the other first transmission magnetic blocks and the second transmission magnetic blocks.

3. A drilling device for metal parts production according to claim 2, characterized in that: At the tangent position between the dressing ring and the drill bit, the rotational linear speed of the dressing ring is greater than or equal to the rotational linear speed of the corresponding position of the drill bit.

4. A drilling device for metal parts production according to claim 1, characterized in that: 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 can be installed on the processing platform to be movable along the radial direction of the drill bit, and the synchronization component is used to drive the plurality of clamping members to move synchronously.

5. A drilling device for metal parts production according to claim 4, characterized in that: The synchronous assembly includes a clamping motor, a driving wheel, a gear ring barrel and multiple transmission gears; the clamping motor is installed on the frame, and the driving wheel is synchronously rotatably installed on the output shaft of the clamping motor; the outer periphery of the gear ring barrel is synchronously rotatably connected with an outer gear ring, and the outer gear ring is meshed with the driving wheel; the inner periphery of the gear ring barrel is synchronously rotatably connected with an inner gear ring; the number of transmission gears is consistent with the number of clamping members, and the transmission gear is rotatably installed on the processing platform around its own axis and meshed with the inner gear ring; the clamping member is fixedly connected with a rack, which extends along the radial direction of the drill bit and meshes with the transmission gear.

6. A drilling device for metal parts production according to claim 1, characterized in that: The trimming ring is provided with a lubrication and heat dissipation mechanism to apply lubricating fluid to the part body during the drilling process.

7. A drilling device for metal parts production according to claim 6, characterized in that: The lubrication and heat dissipation mechanism includes a plurality of liquid storage chambers, which are evenly distributed along the circumference of the trimming ring. The liquid storage chambers are filled with lubricating liquid. The liquid outlets of the liquid storage chambers point to the part body, and the liquid storage chambers are deformed under pressure.

8. A drilling device for metal parts production according to claim 1, characterized in that: The trimming ring is detachably mounted on the frame.

9. A drilling device for metal parts production according to claim 1, characterized in that: The drill bit is detachably connected to the driving plate.

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