Drilling machine for machining automobile parts

Abstract

The invention belongs to the technical field of automobile part machining, and particularly relates to an automobile part machining drilling machine which comprises a machine body, a bottom plate is fixedly connected to the bottom end of the machine body, a drill bit is rotatably arranged at one end of the machine body, a fixing plate is fixedly connected to the upper surface of the bottom plate, and a limiting assembly is arranged on the upper surface of the fixing plate. The limiting assembly comprises two first guide grooves formed in the upper surface of the fixing plate, first guide plates are fixedly connected to the upper surfaces of first guide blocks, the processing assembly comprises a connecting groove formed in the fixing plate, and two reciprocating screw rods are fixedly connected to the interior of the connecting groove; and sliding blocks are slidably connected to the circumferential surfaces of the two reciprocating screw rods correspondingly, the two sliding blocks are fixedly connected with the same fixing ring, a gear ring is rotationally connected to the interior of the fixing ring, and grinding balls which are elastically connected are arranged in the gear ring. The problem that metal chippings can be clamped in a spiral groove of an existing drill bit is solved.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts processing technology, specifically an automotive parts processing drilling machine. Background Technology

[0002] Drilling is a core and fundamental process in automotive parts manufacturing. With the increasing demand for large-scale automotive industry development, specialized drilling machines for automotive parts processing have emerged. As a key processing equipment in the automotive manufacturing field, these machines are specifically designed for drilling core components such as automotive engines, chassis, and bodies. They are the starting core equipment for ensuring the processing accuracy of automotive parts and supporting standardized production in the automotive industry.

[0003] A patent with publication number CN108405904A discloses a drilling machine for processing automotive parts, including a base and a fixed box. The top of the base is fixedly connected to a first fixed seat and a second fixed seat from left to right. The top of the first fixed seat and the second fixed seat are respectively fixedly connected to a first drilling box and a second drilling box via a support frame. A conveyor box is fixedly connected between the first drilling box and the second drilling box. A motor is fixedly connected inside the conveyor box. The front end of the motor output shaft passes through the conveyor box and extends to the front of the conveyor box. A turntable is fixedly connected to the front end of the motor output shaft. Through the cooperation of the turntable and the rotating block, the moving sleeve can slide left and right, thereby causing the rotating rod to swing. By using the cooperation of the sleeve and the roller, the fixed boxes on the conveyor belt can be pushed to both sides in turn for drilling.

[0004] However, in the use of existing automotive parts machining drilling machines, when the drill bit wears down and the cutting edge becomes dull, the machining condition deteriorates. At this time, the cutting force increases, and the metal material cannot be cut and peeled off normally. Instead, it is subjected to strong extrusion and tearing, eventually forming abnormally shaped fragmented chips. These irregular small chips have no fixed curl shape, are small in size and scattered, and are very easy to get stuck in the chip removal groove of the drill bit, causing blockage of the chip removal channel. This not only directly hinders the subsequent drilling feed and rotation, but also causes wobble and vibration problems during the drilling process. At the same time, the stuck chips will cause secondary friction and extrusion with the hole wall and drill bit during drilling, which will not only scratch the surface of the machined hole wall, reducing the machining accuracy and surface finish of the hole, but also further aggravate the wear of the drill bit, forming a vicious cycle of "abnormal chips - aggravated drill bit wear - worse machining quality", thus causing production interruption and affecting processing efficiency and production stability.

[0005] Therefore, the present invention provides a drilling machine for machining automotive parts. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a drilling machine for processing automotive parts, including a machine body, a base plate fixedly connected to the bottom end of the machine body, a drill bit rotatably mounted on one end of the machine body, a fixing plate fixedly connected to the upper surface of the base plate, and a limiting component provided on the upper surface of the fixing plate. The limiting component includes two first guide grooves formed on the upper surface of the fixing plate, the two first guide grooves being symmetrically arranged, a first guide block being slidably connected in each first guide groove, and a first guide plate being fixedly connected to the upper surface of each first guide block. The fixed plate has a processing component inside, which includes a connecting groove inside the fixed plate. Two reciprocating screws are fixed inside the connecting groove. Sliders are slidably connected to the circumferential surfaces of the two reciprocating screws. The two sliders are fixed to the same fixed ring. A gear ring is rotatably connected inside the fixed ring. An elastically connected abrasive ball is provided inside the gear ring. A worm is also fixed to the bottom wall of the connecting groove. The worm meshes with the gear ring. The abrasive ball is used to polish the inner wall of the drill bit's spiral groove.

[0008] Preferably, the limiting component further includes a fixing groove formed on the lower surface of the first guide plate, a slide rod fixedly connected in the fixing groove, two limiting clamps slidably connected on the circumferential surface of the slide rod, the two limiting clamps being symmetrically arranged, and each limiting clamp having a bent cross-section, and a compression spring fixedly connected between each limiting clamp and the inner wall of the fixing groove, the compression spring being used for resetting the limiting clamp.

[0009] Preferably, the processing assembly further includes an annular groove inside the fixed ring, the gear ring rotates along the annular groove on the drive line of the worm gear, two frosted balls are symmetrically arranged inside the gear ring, an internal electro-permanent magnet is provided inside the gear ring, a fixed spring is fixedly connected to the inner wall of the gear ring, a connecting rod is fixedly connected to one end of the fixed spring, and a frosted ball is hinged to one end of the connecting rod.

[0010] Preferably, the processing component further includes several auxiliary slots formed inside the fixed plate. Each auxiliary slot has a convex spring fixedly connected to it. One end of the convex spring is fixedly connected to a protrusion. One side of the protrusion has a through positioning hole, and one end of the protrusion has an auxiliary hole that communicates with the positioning hole. Each auxiliary slot has a spray hole on its inner wall that can spray pressurized lubricating oil. The fixed ring has a limit hole on its circumferential surface that communicates with the auxiliary hole.

[0011] Preferably, the processing assembly further includes an auxiliary ring fixed to the upper surface of the gear ring. The auxiliary ring has an auxiliary cavity inside, and an auxiliary magnetic block, which is an electro-permanent magnet, is fixed inside the auxiliary cavity. A positioning spring is fixed to one side of the auxiliary magnetic block, and a positioning rod is fixed to one end of the positioning spring. A steel ball is hinged to one end of the positioning rod. Lubricating oil is provided inside the auxiliary cavity, and the lubricating oil lubricates the steel ball. The steel ball applies the lubricating oil to the inner wall of the spiral groove of the drill bit.

[0012] Preferably, a telescopic sleeve is fitted on the circumferential surface of the worm gear, the telescopic sleeve is fixedly connected to the fixed plate, and the telescopic sleeve is fixedly connected to the bottom wall of the fixed groove.

[0013] Preferably, the fixed plate has a drop groove on its temporal portion, the drop groove is connected to the fixed groove, and the drop groove is used to guide the metal debris cleaned down by the abrasive ball.

[0014] Preferably, during the drilling process of the car steel plate, after the drill bit penetrates the steel plate, it drives the steel plate to continue moving downwards until the drill bit reaches its end. At this time, the two reciprocating screws inside the connecting groove are activated. The two reciprocating screws drive the fixed ring to move downwards, and at the same time, the built-in electro-permanent magnet inside the gear ring is activated. The electrophoretic magnet is de-energized and loses its magnetism. The connecting rod drives the abrasive ball to slide outwards until the abrasive ball abuts against the inner wall of the drill bit's spiral groove. Then, the downward movement of the fixed ring drives the gear ring to move downwards. The downward movement of the gear ring allows it to passively rotate under the limit of the worm gear. The spiral of the worm gear is the same as that of the drill bit, so the abrasive ball can polish along the inner wall of the drill bit's spiral groove.

[0015] Preferably, during the downward movement of the fixed ring, the fixed ring will squeeze the protrusions provided inside the fixed plate one by one. After being squeezed, the protrusions will squeeze the springs on the inner wall. In addition, the positioning holes on the side of the protrusions are connected to the spray holes provided inside the fixed plate. After the positioning holes are connected to the spray holes, the pressurized lubricating oil inside the fixed plate will enter the positioning holes and then enter the auxiliary holes connected to the positioning holes. After the auxiliary holes are connected to the limiting holes on the fixed ring, the lubricating oil is pressurized into the annular groove to lubricate the gear ring. The end of the protrusion is arc-shaped and fits the arc surface of the fixed ring.

[0016] Preferably, during the rotation of the gear ring driven by the worm gear, the gear ring simultaneously drives the auxiliary ring fixed to its upper surface to rotate. Before the auxiliary ring rotates, the auxiliary magnetic block inside it is de-energized and loses its magnetism, the positioning rod is released, the positioning spring is reset, and the positioning rod is pushed towards the spiral groove of the drill bit until the steel ball at the end of the positioning rod abuts against the spiral groove. At this time, the lubricating oil impregnated in the steel ball can be coated on the inner wall of the spiral groove of the drill bit.

[0017] The beneficial effects of this invention are as follows: 1. The automotive parts processing drilling machine of the present invention uses two first guide plates sliding in conjunction with a limiting clamp to limit the movement of the automotive steel plate, preventing the plate from shifting during drilling and ensuring drilling accuracy. After the drill bit penetrates the steel plate, it continues to move downward to a designated position, reserving reasonable operating space for subsequent grinding and allowing the drilling and grinding actions to be connected. The reciprocating screw drives the fixed ring to move downward, and in conjunction with the electro-permanent magnet block, controls the abrasive ball to abut against the helical groove of the drill bit. Then, through the meshing of the worm and the gear ring, the downward movement of the fixed ring drives the gear ring to rotate passively, and the helix of the worm is consistent with the helix of the drill bit, so that the rotation speed of the gear ring matches the helical groove of the drill bit. This allows the abrasive ball to polish and grind along the helical groove, thereby repairing dull and chipped cutting edges, preventing abnormal chip jamming, and eliminating the need for additional drive of the gear ring to rotate, extending the service life of the drill bit, and ensuring the smoothness and processing quality of subsequent drilling. In addition, the polishing of the helical groove by the abrasive ball also clears the metal debris blocking the internal helical groove of the drill bit.

[0018] 2. The automotive parts processing drilling machine of the present invention, during the downward movement of the fixed ring, squeezes the protrusions one by one, and the arc-shaped end face of the protrusion fits into the arc surface of the fixed ring; while the protrusion is compressed by the pressure of the spring, the positioning hole and the spray hole are connected, so that the pressurized lubricating oil in the fixed plate is injected into the annular groove after docking with the limiting hole through the positioning hole and auxiliary hole, so as to realize the synchronization of lubrication timing with the rotation and grinding action of the gear ring, and the supply of liquid as needed without waste; no additional lubrication control device is required, and the liquid supply in coordination with the downward movement of the fixed ring reduces the rotational friction and wear of the gear ring, improves the smoothness of rotation, ensures the accuracy of the grinding ball grinding along the helical groove of the drill bit, and at the same time extends the service life of transmission components such as gear ring and worm gear, and reduces the maintenance cost of the device.

[0019] 3. The automotive parts machining drilling machine of the present invention uses a gear ring to drive an auxiliary ring to rotate. When the auxiliary magnetic block is de-energized, it releases the positioning rod. A positioning spring pushes a steel ball to conform to the helical groove of the drill bit. Lubricating oil, impregnated in the steel ball, is evenly coated onto the helical groove wall of the drill bit as the ball rotates. This lubrication reduces friction during subsequent drilling and also aids in the maintenance of the drill bit after grinding, extending its service life. Simultaneously, metal chips generated during grinding can fall along the connecting groove into the drop groove and be discharged from the fixed plate, preventing chip accumulation and wear on transmission components. This ensures smooth grinding and subsequent drilling, thereby improving processing efficiency. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of the base plate of the present invention; Figure 3 This is a schematic diagram of the structure of the limiting component of the present invention; Figure 4This is a schematic diagram of the structure of the processing component of the present invention; Figure 5 This is a schematic diagram of the internal structure of the processing component of the present invention; Figure 6 This is a cross-sectional view of the processing component of the present invention; Figure 7 This is a schematic diagram of the disassembled structure of the processing component of the present invention; Figure 8 This is a schematic diagram of the structure of the lower drop trough of the present invention; In the image: 1. Body; 11. Drill bit; 2. Base plate; 21. Fixing plate; 22. First guide groove; 23. First guide plate; 24. First guide block; 25. Fixing groove; 26. Slide rod; 27. Limiting clamp; 28. Compression spring; 29. ​​Connecting groove; 210. Reciprocating screw; 211. Slider; 212. Fixing ring; 213. Annular groove; 214. Gear ring; 215. Connecting rod; 216. Frosted ball; 217. Worm gear; 218. Drop groove; 219. Telescopic sleeve; 220. Fixing spring; 221. Auxiliary groove; 222. Protrusion; 223. Protruding spring; 224. Positioning hole; 225. Auxiliary hole; 226. Limiting hole; 227. Auxiliary ring; 228. Auxiliary cavity; 229. Auxiliary magnet; 230. Positioning spring; 231. Positioning rod; 232. Steel ball. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] Example 1: As Figures 1 to 8As shown in the embodiment of the present invention, an automotive parts processing drilling machine has a base plate 2 fixedly connected to the bottom end of the machine body 1. A drill bit 11 is rotatably mounted on one end of the machine body 1. A fixing plate 21 is fixedly connected to the upper surface of the base plate 2. A limit assembly is provided on the upper surface of the fixing plate 21. The limit assembly includes two first guide grooves 22 formed on the upper surface of the fixing plate 21. The two first guide grooves 22 are symmetrically arranged. A first guide block 24 is slidably connected in each first guide groove 22. A first guide plate 23 is fixedly connected to the upper surface of each first guide block 24. A processing assembly is provided inside the fixing plate 21. The processing assembly includes a connecting groove 29 formed inside the fixing plate 21. Two reciprocating screws 210 are fixedly connected inside the connecting groove 29. A slider 211 is slidably connected to the circumferential surface of each of the two reciprocating screws 210. The two sliders 211 are fixedly connected to... The same fixed ring 212 has a gear ring 214 rotatably connected inside it. The gear ring 214 has elastically connected abrasive balls 216 inside it. The bottom wall of the connecting groove 29 is also fixedly connected to a worm gear 217, which meshes with the gear ring 214. The abrasive balls 216 are used to polish the inner wall of the spiral groove of the drill bit 11. The processing assembly also includes an annular groove 213 opened inside the fixed ring 212. The gear ring 214 rotates along the annular groove 213 on the drive line of the worm gear 217. Two abrasive balls 216 are symmetrically arranged inside the gear ring 214. The gear ring 214 has a built-in electro-permanent magnet block inside it. A fixed spring 220 is fixedly connected to the inner wall of the gear ring 214. A connecting rod 215 is fixedly connected to one end of the fixed spring 220. Abrasive balls 216 are hinged to one end of the connecting rod 215.

[0024] Specifically, in the use of existing automotive parts machining drilling machines, when the drill bit 11 wears down and the cutting edge becomes dull, the machining condition deteriorates: at this time, the cutting force increases, and the metal material cannot be cut and peeled off normally. Instead, it is subjected to strong extrusion and tearing, eventually forming abnormally shaped fragmented chips. These irregular small chips have no fixed curling shape, are small in size and scattered, and are very easy to get stuck in the chip removal groove of the drill bit 11, causing blockage of the chip removal channel. This not only directly hinders the subsequent drilling feed and rotation, but also causes wobble and vibration problems during the drilling process. At the same time, the stuck chips will cause secondary friction and extrusion with the hole wall and the drill bit 11 during drilling. This will not only scratch the surface of the machined hole wall, reducing the machining accuracy and surface finish of the hole, but also further aggravate the wear of the drill bit 11, forming a vicious cycle of "abnormal chips - increased wear of drill bit 11 - worse machining quality", thus causing production interruption and affecting processing efficiency and production stability. Therefore, the present invention solves the above problems by setting the above structure. First, when the drill bit 11 drills a hole in the car steel plate, the car steel plate is placed on the upper surface of the fixed plate 21. Then, the two first guide plates 23 that are slidably set on the upper surface of the fixed plate 21 are activated. The two first guide plates 23 gradually approach each other. Then, under the pressure of the limiting clamp 27 on the lower surface of the first guide plate 23, the car steel plate is limited. Then, the drill bit 11 is activated to perform drilling. The drill bit 11 moves down to drill until it penetrates the steel plate. Then, the steel plate is driven to continue moving downward until the drill bit 11 moves to the end. At this time, the two connecting grooves inside the connecting groove 29 are activated. Two reciprocating screws 210 drive the fixed ring 212 to move downwards, simultaneously activating the built-in electro-permanent magnet block inside the gear ring 214. The electrophoretic magnet block is de-energized and loses its magnetism, causing the connecting rod 215 to drive the abrasive ball 216 to slide outwards until the abrasive ball 216 abuts against the inner wall of the spiral groove of the drill bit 11. Then, the downward movement of the fixed ring 212 drives the gear ring 214 to move downwards. The downward movement of the gear ring 214 allows it to passively rotate under the limit of the worm gear 217. The spiral of the worm gear 217 is the same as that of the drill bit 11, so the abrasive ball 216 can polish and grind along the inner wall of the spiral groove of the drill bit 11. By sliding the two first guide plates 23 in conjunction with the limiting clamps 27, the automotive steel sheet can be limited to prevent the sheet from shifting during drilling and ensure drilling accuracy. After the drill bit 11 penetrates the steel sheet, it continues to move downward to the designated position, leaving reasonable operating space for subsequent grinding and allowing the drilling and grinding actions to be connected. The reciprocating screw 210 drives the fixed ring 212 to move downward, which, in conjunction with the electro-permanent magnet, controls the abrasive ball 216 to abut against the helical groove of the drill bit 11. Then, through the meshing of the worm gear 217 and the gear ring 214, the downward movement of the fixed ring 212 drives the gear ring 214. 4. The worm gear 217 rotates passively, and the spiral of the worm gear 217 is consistent with the spiral of the drill bit 11. This allows the rotation speed of the gear ring 214 to match the spiral groove of the drill bit 11. This enables the abrasive ball 216 to polish and grind along the spiral groove, thereby repairing dull and chipped cutting edges and preventing abnormal chip jamming. At the same time, there is no need to drive the gear ring 214 to rotate, which extends the service life of the drill bit 11 and ensures the smoothness and processing quality of subsequent drilling. In addition, the abrasive ball 216's spiral groove polishing will also clear the metal debris blocking the spiral groove of the drill bit 11.

[0025] like Figure 5 As shown, the processing component in this embodiment also includes several auxiliary grooves 221 formed inside the fixed plate 21. Each auxiliary groove 221 is fixedly connected to a convex spring 223. One end of the convex spring 223 is fixedly connected to a protrusion 222. A through positioning hole 224 is formed on one side of the protrusion 222. An auxiliary hole 225 is formed at one end of the protrusion 222. The auxiliary hole 225 communicates with the positioning hole 224. A spray hole is formed on the inner wall of each auxiliary groove 221. The spray hole can spray pressurized lubricating oil. A limit hole 226 is formed on the circumferential surface of the fixed ring 212. The limit hole 226 can communicate with the auxiliary hole 225.

[0026] Specifically, during the downward movement of the fixed ring 212, the fixed ring 212 will press the protrusions 222 inside the fixed plate 21 one by one. After being pressed, the protrusions 222 will press the spring 223 on the inner wall. In addition, the positioning hole 224 on the side of the protrusion 222 is connected to the spray hole inside the fixed plate 21. After the positioning hole 224 is connected to the spray hole, the pressurized lubricating oil inside the fixed plate 21 will enter the positioning hole 224 and then enter the auxiliary hole 225 connected to the positioning hole 224. After the auxiliary hole 225 is connected to the limiting hole 226 on the fixed ring 212, the lubricating oil is pressurized into the annular groove 213 to lubricate the gear ring 214. The end of the protrusion 222 is arc-shaped and fits the arc surface of the fixed ring 212. As the fixed ring 212 moves downward, it squeezes the protrusions 222 one by one, and the arc-shaped end face of the protrusion 222 fits into the arc surface of the fixed ring 212. While the protrusion 222 is compressed by the spring 223, the positioning hole 224 connects with the spray hole, so that the pressurized lubricating oil in the fixed plate 21 is injected into the annular groove 213 after it is connected with the limiting hole 226 through the positioning hole 224 and the auxiliary hole 225. This realizes that the lubrication timing is synchronized with the rotation and grinding action of the gear ring 214, and the liquid is supplied as needed without waste. No additional lubrication control device is needed. The liquid supply in coordination with the downward movement of the fixed ring 212 reduces the rotational friction and wear of the gear ring 214, improves the smoothness of rotation, ensures the accuracy of the grinding ball 216 grinding along the spiral groove of the drill bit 11, and extends the service life of transmission components such as the gear ring 214 and the worm gear 217, thereby reducing the maintenance cost of the device.

[0027] Example 2: Figures 1 to 8 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the processing component further includes an auxiliary ring 227 fixedly attached to the upper surface of the gear ring 214. An auxiliary cavity 228 is provided inside the auxiliary ring 227. An auxiliary magnetic block 229 is fixedly attached inside the auxiliary cavity 228. The auxiliary magnetic block 229 is an electro-permanent magnet. A positioning spring 230 is fixedly attached to one side of the auxiliary magnetic block 229. A positioning rod 231 is fixedly attached to one end of the positioning spring 230. A steel ball 232 is hinged to one end of the positioning rod 231. The cavity 228 is filled with lubricating oil, which lubricates the steel ball 232. The steel ball 232 applies the lubricating oil to the inner wall of the spiral groove of the drill bit 11. A telescopic sleeve 219 is fitted on the circumferential surface of the worm 217. The telescopic sleeve 219 is fixedly connected to the fixed plate 21 and to the bottom wall of the fixed groove 25. A drop groove 218 is opened in the temporal part of the fixed plate 21. The drop groove 218 is connected to the fixed groove 25 and is used to guide the metal debris cleaned down by the abrasive ball 216.

[0028] Specifically, during the rotation of the gear ring 214 driven by the worm gear 217, the gear ring 214 will simultaneously drive the auxiliary ring 227 fixed to its upper surface to rotate. Before the auxiliary ring 227 rotates, the auxiliary magnetic block 229 inside it is de-energized and loses its magnetism, the positioning rod 231 is released, the positioning spring 230 is elastically reset, and pushes the positioning rod 231 towards the spiral groove of the drill bit 11 until the steel ball 232 at the end of the positioning rod 231 abuts against the spiral groove. At this time, the lubricating oil soaked in the steel ball 232 can coat the inner wall of the spiral groove of the drill bit 11. At the same time, the metal debris that is cleaned down falls into the drop groove 218 along the connecting groove 29, and then is discharged from the fixing plate 21 along the drop groove 218. The rotation of gear ring 214 drives the rotation of auxiliary ring 227. The auxiliary magnetic block 229 is de-energized, releasing positioning rod 231. Positioning spring 230 pushes steel ball 232 to conform to the spiral groove of drill bit 11. Lubricating oil impregnated in steel ball 232 is evenly coated onto the spiral groove wall of drill bit 11 as the ball rotates, lubricating the spiral groove and reducing subsequent drilling friction. This also assists in the maintenance of drill bit 11 after grinding, extending its service life. Simultaneously, metal shavings generated during grinding can fall along connecting groove 29 into drop groove 218 and out of fixing plate 21, preventing shavings accumulation and wear on transmission components. This ensures smooth grinding and subsequent drilling, achieving the effect of improving processing efficiency.

[0029] Working principle: First, when the drill bit 11 drills a hole in the car steel plate, the car steel plate is placed on the upper surface of the fixed plate 21. Then, the two first guide plates 23, which are slidably set on the upper surface of the fixed plate 21, are activated. The two first guide plates 23 gradually approach each other, and then the car steel plate is limited by the limiting clamp 27 on the lower surface of the first guide plates 23. Then, the drill bit 11 is activated to start drilling. The drill bit 11 moves down to drill until it penetrates the steel plate. Then, the steel plate is driven to continue moving downward until the drill bit 11 reaches its end. At this time, the two reciprocating screws 210 inside the connecting groove 29 are activated. Two reciprocating screws 210 drive the fixed ring 212 to move downwards, while simultaneously activating the built-in electro-permanent magnet block inside the gear ring 214. The electrophoretic magnet block is de-energized and loses its magnetism. The connecting rod 215 drives the abrasive ball 216 to slide outwards until the abrasive ball 216 abuts against the inner wall of the spiral groove of the drill bit 11. Then, the downward movement of the fixed ring 212 drives the gear ring 214 to move downwards. The downward movement of the gear ring 214 allows it to passively rotate under the limit of the worm 217. The spiral of the worm 217 is the same as that of the drill bit 11, so the abrasive ball 216 can polish and grind along the inner wall of the spiral groove of the drill bit 11. By sliding the two first guide plates 23 in conjunction with the limiting clamps 27, the automotive steel sheet can be limited to prevent the sheet from shifting during drilling and ensure drilling accuracy. After the drill bit 11 penetrates the steel sheet, it continues to move downward to the designated position, leaving reasonable operating space for subsequent grinding and allowing the drilling and grinding actions to be connected. The reciprocating screw 210 drives the fixed ring 212 to move downward, which, in conjunction with the electro-permanent magnet, controls the abrasive ball 216 to abut against the helical groove of the drill bit 11. Then, through the meshing of the worm gear 217 and the gear ring 214, the downward movement of the fixed ring 212 drives the gear ring 214. 4. The worm gear 217 rotates passively, and the spiral of the worm gear 217 is consistent with the spiral of the drill bit 11, so that the rotation speed of the gear ring 214 matches the spiral groove of the drill bit 11. This allows the abrasive ball 216 to polish and grind along the spiral groove, thereby repairing the dull and chipped cutting edge, avoiding abnormal chip jamming, and eliminating the need for additional drive of the gear ring 214 to rotate. This extends the service life of the drill bit 11 and ensures the smoothness and processing quality of subsequent drilling. In addition, the abrasive ball 216's spiral groove polishing also clears the metal debris blocking the spiral groove of the drill bit 11. Additionally, during the downward movement of the fixed ring 212, the fixed ring 212 will press the protrusions 222 provided inside the fixed plate 21 one by one. After being pressed, the protrusions 222 will press the spring 223 on the inner wall. Furthermore, the positioning hole 224 on the side of the protrusion 222 is connected to the spray hole provided inside the fixed plate 21. After the positioning hole 224 is connected to the spray hole, the pressurized lubricating oil inside the fixed plate 21 will enter the positioning hole 224 and then enter the auxiliary hole 225 connected to the positioning hole 224. After the auxiliary hole 225 is connected to the limiting hole 226 on the fixed ring 212, the lubricating oil is pressurized into the annular groove 213 to lubricate the gear ring 214. The end of the protrusion 222 is arc-shaped and fits the arc surface of the fixed ring 212. As the fixed ring 212 moves downward, it squeezes the protrusions 222 one by one, and the arc-shaped end face of the protrusion 222 fits into the arc surface of the fixed ring 212. While the protrusion 222 is compressed by the spring 223, the positioning hole 224 connects with the spray hole, so that the pressurized lubricating oil in the fixed plate 21 is injected into the annular groove 213 after it is connected to the limiting hole 226 through the positioning hole 224 and the auxiliary hole 225. This realizes that the lubrication timing is synchronized with the rotation and grinding action of the gear ring 214, and the liquid is supplied as needed without waste. No additional lubrication control device is needed. The liquid supply in coordination with the downward movement of the fixed ring 212 reduces the rotational friction and wear of the gear ring 214, improves the smoothness of rotation, ensures the accuracy of the grinding ball 216 grinding along the spiral groove of the drill bit 11, and extends the service life of transmission components such as the gear ring 214 and the worm 217, thereby reducing the maintenance cost of the device. Finally, during the rotation of the gear ring 214 driven by the worm gear 217, the gear ring 214 will simultaneously drive the auxiliary ring 227 fixed to its upper surface to rotate. Before the auxiliary ring 227 rotates, the auxiliary magnetic block 229 inside it is de-energized and loses its magnetism, the positioning rod 231 is released, the positioning spring 230 is elastically reset, and pushes the positioning rod 231 towards the spiral groove of the drill bit 11 until the steel ball 232 at the end of the positioning rod 231 abuts against the spiral groove. At this time, the lubricating oil soaked in the steel ball 232 can coat the inner wall of the spiral groove of the drill bit 11. At the same time, the metal debris that is cleaned down falls into the drop groove 218 along the connecting groove 29, and then is discharged from the fixing plate 21 along the drop groove 218. The rotation of gear ring 214 drives the rotation of auxiliary ring 227. The auxiliary magnetic block 229 is de-energized, releasing positioning rod 231. Positioning spring 230 pushes steel ball 232 to conform to the spiral groove of drill bit 11. Lubricating oil impregnated in steel ball 232 is evenly coated onto the spiral groove wall of drill bit 11 as the ball rotates, lubricating the spiral groove and reducing subsequent drilling friction. This also assists in the maintenance of drill bit 11 after grinding, extending its service life. Simultaneously, metal shavings generated during grinding can fall along connecting groove 29 into drop groove 218 and out of fixing plate 21, preventing shavings accumulation and wear on transmission components. This ensures smooth grinding and subsequent drilling, achieving the effect of improving processing efficiency.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling machine for processing automotive parts, comprising a machine body (1), a base plate (2) fixedly connected to the bottom end of the machine body (1), and a drill bit (11) rotatably mounted on one end of the machine body (1), characterized in that: A fixing plate (21) is fixedly connected to the upper surface of the base plate (2). A limiting component is provided on the upper surface of the fixing plate (21). The limiting component includes two first guide grooves (22) opened on the upper surface of the fixing plate (21). The two first guide grooves (22) are symmetrically arranged. A first guide block (24) is slidably connected in each first guide groove (22). A first guide plate (23) is fixedly connected to the upper surface of each first guide block (24). The fixed plate (21) is provided with a processing component inside. The processing component includes a connecting groove (29) opened inside the fixed plate (21). Two reciprocating screws (210) are fixed inside the connecting groove (29). Slider (211) is slidably connected to the circumferential surface of the two reciprocating screws (210). The two sliders (211) are fixed to the same fixed ring (212). A gear ring (214) is rotatably connected inside the fixed ring (212). An elastically connected abrasive ball (216) is provided inside the gear ring (214). A worm (217) is also fixed to the bottom wall of the connecting groove (29). The worm (217) meshes with the gear ring (214). The abrasive ball (216) is used to polish the inner wall of the spiral groove of the drill bit (11).

2. The drilling machine for machining automotive parts according to claim 1, characterized in that: The limiting component also includes a fixing groove (25) formed on the lower surface of the first guide plate (23). A slide rod (26) is fixedly connected in the fixing groove (25). Two limiting clips (27) are slidably connected on the circumferential surface of the slide rod (26). The two limiting clips (27) are symmetrically arranged, and the cross section of each limiting clip (27) is bent. A compression spring (28) is fixedly connected between each limiting clip (27) and the inner wall of the fixing groove (25). The compression spring (28) is used to reset the limiting clip (27).

3. The drilling machine for machining automotive parts according to claim 1, characterized in that: The processing assembly also includes an annular groove (213) inside the fixed ring (212). The gear ring (214) rotates along the annular groove (213) on the drive line of the worm (217). Two frosted balls (216) are symmetrically arranged inside the gear ring (214). An internal electro-permanent magnet block is provided inside the gear ring (214). A fixed spring (220) is fixed to the inner wall of the gear ring (214). A connecting rod (215) is fixed to one end of the fixed spring (220). A frosted ball (216) is hinged to one end of the connecting rod (215).

4. The drilling machine for machining automotive parts according to claim 1, characterized in that: The processing component also includes several auxiliary slots (221) inside the fixed plate (21). Each auxiliary slot (221) is fixed with a spring (223). One end of the spring (223) is fixed with a protrusion (222). One side of the protrusion (222) is provided with a through positioning hole (224). One end of the protrusion (222) is provided with an auxiliary hole (225). The auxiliary hole (225) communicates with the positioning hole (224). Each auxiliary slot (221) has a spray hole on its inner wall. The spray hole can spray pressurized lubricating oil. The fixed ring (212) has a limit hole (226) on its circumferential surface. The limit hole (226) can communicate with the auxiliary hole (225).

5. A drilling machine for machining automotive parts according to claim 4, characterized in that: The processing assembly also includes an auxiliary ring (227) fixed to the upper surface of the gear ring (214). An auxiliary cavity (228) is provided inside the auxiliary ring (227). An auxiliary magnetic block (229) is fixed inside the auxiliary cavity (228). The auxiliary magnetic block (229) is an electro-permanent magnet. A positioning spring (230) is fixed to one side of the auxiliary magnetic block (229). A positioning rod (231) is fixed to one end of the positioning spring (230). A steel ball (232) is hinged to one end of the positioning rod (231). Lubricating oil is provided inside the auxiliary cavity (228). The lubricating oil lubricates the steel ball (232). The steel ball (232) applies the lubricating oil to the inner wall of the spiral groove of the drill bit (11).

6. The drilling machine for machining automotive parts according to claim 1, characterized in that: The worm (217) is fitted with a telescopic sleeve (219) on its circumferential surface. The telescopic sleeve (219) is fixedly connected to the fixed plate (21) and the telescopic sleeve (219) is fixedly connected to the bottom wall of the fixed groove (25).

7. A drilling machine for machining automotive parts according to claim 3, characterized in that: The fixed plate (21) has a drop groove (218) on its temporal part. The drop groove (218) is connected to the fixed groove (25). The drop groove (218) is used to guide the metal debris cleaned down by the abrasive ball (216).

8. A drilling machine for machining automotive parts according to claim 3, characterized in that: During the drilling process of the drill bit (11) into the car steel plate, after the drill bit (11) penetrates the steel plate, it drives the steel plate to continue moving downward until the drill bit (11) reaches its end. At this time, the two reciprocating screws (210) inside the connecting groove (29) are activated. The two reciprocating screws (210) drive the fixed ring (212) to move downward. At the same time, the built-in electro-permanent magnet inside the gear ring (214) is activated. The electrophoretic magnet is de-energized and loses its magnetism. The connecting rod (215) carries... The moving abrasive ball (216) slides outward until it comes into contact with the inner wall of the spiral groove of the drill bit (11). Then, the downward movement of the fixing ring (212) drives the gear ring (214) to move downward. The downward movement of the gear ring (214) allows it to be passively rotated under the limit of the worm (217). The spiral of the worm (217) is the same as that of the drill bit (11). Therefore, the abrasive ball (216) can polish along the inner wall of the spiral groove of the drill bit (11).

9. A drilling machine for machining automotive parts according to claim 4, characterized in that: During the downward movement of the fixed ring (212), the fixed ring (212) will squeeze the protrusions (222) set inside the fixed plate (21) one by one. After the protrusions (222) are squeezed, they will squeeze the inner wall spring (223). In addition, the positioning hole (224) on the side of the protrusion (222) is connected to the spray hole set inside the fixed plate (21). After the positioning hole (224) is connected to the spray hole, the pressurized lubricating oil inside the fixed plate (21) will enter the positioning hole (224) and then enter the auxiliary hole (225) connected to the positioning hole (224). After the auxiliary hole (225) is connected to the limiting hole (226) on the fixed ring (212), the lubricating oil is pressurized into the annular groove (213) to lubricate the gear ring (214). The end of the protrusion (222) is arc-shaped and fits the arc surface of the fixed ring (212).

10. A drilling machine for machining automotive parts according to claim 7, characterized in that: During the rotation of the gear ring (214) driven by the worm (217), the gear ring (214) will simultaneously drive the auxiliary ring (227) fixed on its upper surface to rotate. Before the auxiliary ring (227) rotates, the auxiliary magnetic block (229) inside it is de-energized and loses its magnetism. The positioning rod (231) is released, the positioning spring (230) is reset by elastic force, and pushes the positioning rod (231) towards the spiral groove of the drill bit (11) until the steel ball (232) at the end of the positioning rod (231) abuts against the spiral groove. At this time, the lubricating oil wetted by the steel ball (232) can be coated on the inner wall of the spiral groove of the drill bit (11).

Images