Automatic light steel profile surface trepanning equipment

Abstract

The invention relates to the technical field of light steel profile machining, in particular to automatic light steel profile surface trepanning equipment which comprises a base, an arch frame, a scrap collecting frame, a trepanning drill bit, a power unit, a feeding unit, an abutting mechanism and a clamping mechanism. The arch frame is fixed to the top of the base and used for bearing the groove-shaped light steel and guiding the groove-shaped light steel to move in the length direction. Circumferential rotation is converted into linear reciprocating motion through sliding fit of the follow-up rod and the crank disc, and synchronous feeding of the upper and lower trepanning drill bits in the vertical direction is achieved through linkage of the transmission gear and the double racks. Meanwhile, the abutting plate makes contact with the light steel before the drill bit, the abutting spring is compressed along with feeding of the drill bit to generate uniform abutting force, the light steel is firmly locked to the arch frame, the damper buffers impact force and drilling vibration, shaking of the light steel is effectively restrained through the dual effects, it is ensured that the hole position is accurate, the hole wall is smooth, the force application directions of the drilling drill bit and the abutting plate are opposite, and uneven stress on one side is avoided.

Description

Technical Field

[0001] This invention relates to the field of light steel profile processing technology, specifically an automated light steel profile surface drilling device. Background Technology

[0002] In the field of light steel profile processing, surface drilling of channel light steel is a fundamental and critical process, and its processing quality directly affects the subsequent assembly accuracy and structural stability of the light steel profile. Due to the thinness and poor rigidity of channel light steel itself, most existing light steel drilling equipment adopts a single-sided drilling processing method, which has many unresolved defects in practical applications.

[0003] When drilling from one side, the drill bit applies cutting force only from one side of the light steel. The drilling area of ​​the thin light steel will bend and deform along the feed direction of the drill bit under the concentrated action of the cutting force from one side. At the same time, a ring of burrs is easily formed at the end of the hole during the cutting process. When the degree of deformation exceeds the elastic limit of the light steel profile, it will directly cause the profile to be scrapped, resulting in material loss and a significant increase in production costs.

[0004] To address the aforementioned drilling deformation and burr issues, existing single-sided drilling equipment typically employs a "drill-flip workpiece-deburr" processing mode. This mode not only requires flipping the light steel profile to complete the double-sided hole processing, significantly increasing the workpiece handling and clamping steps, leading to a decrease in overall processing efficiency; simultaneously, the additional deburring process further lengthens the processing cycle and is prone to secondary damage such as workpiece collisions and hole position misalignment due to secondary clamping operations. Furthermore, while existing equipment generally incorporates a clamping mechanism to mitigate light steel deformation during drilling, these mechanisms often employ a fixed clamping structure design, failing to adaptively adjust the clamping force in real time according to the drilling progress. During drilling, the light steel is susceptible to shaking due to the instantaneous impact force of the drill bit feed. This not only fails to effectively suppress deformation but also further exacerbates bending deformation in the drilling area, ultimately leading to loss of hole position accuracy and affecting workpiece processing quality. Summary of the Invention

[0005] The purpose of this invention is to provide an automated surface drilling device for light steel profiles to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions: An automated surface drilling device for light steel profiles, preferably comprising a base, an arch frame, a chip collection frame, a drilling bit, a power unit, a feeding unit, a clamping mechanism, and a clamping mechanism; The arch frame is fixed to the top of the base and is used to support the channel-shaped light steel and guide it to move along the length direction. The chip collection frame is fixed to the top of the base and located below the middle section of the arch frame. There are two drilling bits, which are oppositely arranged on the upper and lower sides of the channel-shaped light steel and staggered along the length direction of the arch frame. A grinding ring is fixedly sleeved in the middle section of the lower drilling bit. The power unit drives the drilling bit to rotate and completes up-and-down or separation movements. The feed unit is linked with the power unit, and its feed pin is embedded in the slotted light steel drill hole to push it to move quantitatively. When the drilling bit is drilling, the clamping mechanism applies a reverse counterforce to the slotted light steel to lock the processing end. The clamping mechanism is set at both ends of the chip collection frame to perform auxiliary positioning and clamping of the slotted light steel.

[0007] Preferably, the power unit includes a first slide bar, a U-shaped mounting platform, a U-shaped transmission platform, a transmission assembly, and a pair of follower rods; The first slide rod is symmetrically fixed inside the chip collection frame. The U-shaped mounting platform and the U-shaped transmission platform are both slidably connected to the first slide rod and are arranged correspondingly at the top and bottom. The drilling bit is rotatably connected inside the U-shaped mounting platform. The follower rod is disposed inside the chip collection frame, and one end of the follower rod is provided with a follower groove for connecting with the crank disc hinge end of the crank component. Since the two drilling bits are set opposite to each other on the upper and lower sides of the channel-shaped light steel, the two follower rods are fixedly connected to the top of the U-shaped mounting platform above the channel-shaped light steel and the U-shaped transmission platform above the channel-shaped light steel, respectively, so as to realize the linkage transmission between the crank component and the U-shaped mounting platform and the U-shaped transmission platform.

[0008] Preferably, the transmission assembly includes a transmission gear, a first transmission rack, and a second transmission rack. The first transmission rack is fixed to two U-shaped mounting platforms installed vertically, and the second transmission rack is fixed to two U-shaped transmission platforms installed vertically. The transmission gear meshes with the first transmission rack and the second transmission rack. The power unit drives the upper and lower racks to move relative to each other, causing the U-shaped transmission platforms and the U-shaped mounting platforms to move towards each other, thereby causing the two drilling bits to move towards or away from each other along the first slide rod.

[0009] Preferably, the power unit further includes a cutting motor, which is fixedly connected to the U-shaped mounting platform, and the output end of the cutting motor is fixedly connected to the first bevel gear; One end of the drilling bit passes through the U-shaped mounting platform and is fixedly connected to the second bevel gear, and the first bevel gear meshes with the second bevel gear. The cutting motor drives the drilling bit to rotate at high speed, and the drilling is completed by a progressive rotary cutting method, which reduces the stress and deformation of the profile.

[0010] Preferably, the power unit further includes a worm gear, a worm wheel, a power motor, a crank assembly, and a gantry frame; The gantry frame is fixed to the top of the chip collection frame, the crank assembly is symmetrically rotated and connected inside the gantry frame, the worm gear is fixed to the end of the crank shaft and meshes with the worm, the power motor is fixed to the top of the gantry frame, and the output end of the power motor is fixedly connected to the worm. The crank plate hinge end of the crank component is embedded in the follower groove of the follower rod. Through the sliding cooperation between the follower groove and the follower rod, the rotational power of the crank component is transmitted to the U-shaped mounting platform and the U-shaped transmission platform, driving the two to move towards or away from each other along the first slide rod. At the same time, it drives the drilling bit to move up and down in the vertical direction, realizing synchronous feeding or resetting of the upper and lower drill bits.

[0011] Preferably, the clamping mechanism includes a T-shaped support frame, a clamping plate, a damper, and a clamping spring; The T-shaped support frame is fixed inside the U-shaped mounting platform or U-shaped transmission platform of the power unit. The damper is fixed to one end of the T-shaped support frame. The clamping plate is fixedly connected to the bottom of the damper. The clamping spring is sleeved on the outer periphery of the damper and installed between the clamping plate and the end of the damper. A through hole adapted to the drilling bit is opened in the middle section of the clamping plate. When drilling with the top and bottom opening drill bits, the clamping plate passes through the chip removal groove of the arch frame and forms an elastic clamping action with the opening drill bit on the channel-shaped light steel, locking the processing end and reducing shaking.

[0012] Preferably, the feeding unit includes a third bevel gear, a fourth bevel gear, a horizontal bar, a vertical bar, a transmission slider, a central rotating rod, a central rotating slider, and an ejection spring; The third bevel gear is fixed to the bottom of the worm gear of the power unit, the crossbar is fixed inside the chip collection frame along the length of the arch frame, the vertical rod is slidably connected to the top of the crossbar, and the transmission slider is slidably connected to one end of the vertical rod. The transfer rod is hinged to one end of the transmission slider. The fourth bevel gear meshes with the third bevel gear and is fixedly connected to the transfer slider. The transfer slider is slidably connected to the transfer rod, and the push-out spring is sleeved on the outer periphery of the transfer rod. The feed pin is fixed to one end of the transmission slider, located directly below the chip removal groove, and moves in a rectangular reciprocating motion in conjunction with the power unit.

[0013] Preferably, the rectangular reciprocating motion of the feed pin specifically refers to: When the drilling bit is completed and reset, the feed pin is inserted into the new hole position of the slotted light steel. Then it moves along the length of the arch frame to push the trough-shaped light steel to be quantitatively fed; Before the drill bit moves down to drill again, the feed pin is disengaged from the hole. Finally, it moves back to the initial position to complete one feeding cycle, synchronizing with the drilling process.

[0014] Preferably, the clamping mechanism includes a U-shaped fixed platform, clamping rollers, locking rod, locking handle, a fifth bevel gear, and a sixth bevel gear; The U-shaped fixed platform is symmetrically arranged at both ends of the chip collection frame. The clamping roller is rotatably connected to the inside of the U-shaped fixed platform. The locking rod is rotatably connected to the clamping slide groove of the U-shaped fixed platform and is provided with locking threads with opposite directions of rotation. The locking rod is threadedly connected to the clamping slider in the clamping slide groove through the locking thread. The fifth bevel gear is fixed to the top of the locking rod, and the sixth bevel gear meshes with the fifth bevel gear and is fixedly connected to one end of the locking handle. Rotating the locking handle drives the clamping roller to clamp or release the slotted light steel synchronously through the bevel gear transmission.

[0015] Preferably, a chip removal groove is provided in the area corresponding to the chip collection frame at the top of the arch frame. The size of the chip removal groove is adapted to the clamping plate, allowing the clamping plate to pass through smoothly and perform clamping action. The chip collection frame is connected to the inside of the arch frame through the chip removal groove to collect the debris generated during the drilling process, so as to avoid the accumulation of debris affecting the drilling accuracy and equipment operation.

[0016] The beneficial effects of this invention are: 1. This invention utilizes the synergistic effect of a power unit and a clamping mechanism. The power motor drives the worm gear to rotate, and the power is transmitted to the crank component through the meshing of the worm wheel. The sliding engagement between the follower rod and the crank disc converts the circular rotation into linear reciprocating motion. Then, through the linkage of the transmission gear and the double rack, the upper and lower drilling bits are fed synchronously in the vertical direction. At the same time, the clamping plate contacts the light steel before the drill bit. As the drill bit feeds, it compresses the clamping spring to generate a uniform counterforce, firmly locking the light steel onto the arch frame. The damper buffers the impact force and drilling vibration. The dual action effectively suppresses the swaying of the light steel, ensures accurate hole positioning and smooth hole walls. The opposing forces of the drilling bit and the clamping plate avoid uneven force on one side, effectively reducing the problem of deformation of the light steel profile caused by drilling on one side.

[0017] 2. The present invention completes the deburring operation simultaneously during the drilling process. A grinding ring is fixedly sleeved in the middle section of the lower drilling bit. When the upper and lower drilling bits feed synchronously to complete the drilling, the grinding ring follows the drilling bit to fit the bottom of the hole and accurately grinds and removes the burrs on the bottom edge of the hole. No additional process is required, which shortens the processing cycle and avoids damage to the workpiece caused by secondary operation.

[0018] 3. In this invention, the worm gear linkage between the feed unit and the power unit allows the worm gear to rotate and drive the bevel gear transmission when drilling of a single hole is completed and the drill bit is reset. This drives the intermediate slider and intermediate rod to move together, so that the feed pin is accurately embedded in the new hole and pushes the light steel to feed quantitatively. The feeding action is completely synchronized with the drilling process, ensuring that the spacing between adjacent holes is accurate and uniform. This not only improves the feeding efficiency but also ensures the consistency of batch processing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the chip collection frame in this invention; Figure 3 This is a three-dimensional structural diagram of the arch frame in this invention; Figure 4 This is a three-dimensional structural diagram of the grinding ring in this invention; Figure 5 This is a three-dimensional structural diagram of the drilling bit in this invention; Figure 6 This is a top view of the U-shaped mounting platform in this invention; Figure 7 yes Figure 6 A cross-sectional view along the AA direction; Figure 8 This is a three-dimensional structural diagram of the crank component in this invention; Figure 9 This is a schematic diagram of the overall structure of the feeding unit in this invention; Figure 10 This is a schematic diagram of the overall structure of the clamping mechanism in this invention.

[0020] The following are the reference numerals in the attached diagram: 1. Base; 2. Arch frame; 3. Chip collection frame; 4. Drill bit; 5. Grinding ring; 6. Feed pin; 7. First slide bar; 8. U-shaped mounting platform; 9. Transmission gear; 10. First transmission rack; 11. Second transmission rack; 12. Cutting motor; 13. First bevel gear; 14. Second bevel gear; 15. Gantry frame; 16. Worm gear; 17. Worm wheel; 18. Power motor; 19. T-shaped support frame; 20. Clamping plate; 21. Damper; 22. Clamping spring; 23. Perforation; 24. Chip removal groove; 25. Third bevel gear; 26. Fourth bevel gear; 27. Horizontal bar; 28. Vertical bar; 29. ​​Transmission slider; 30. Central rotating rod; 31. Central rotating slider; 32. Ejection spring; 33. U-shaped fixed platform; 34. Clamping roller; 35. Locking rod; 36. Locking handle; 37. Fifth bevel gear; 38. Sixth bevel gear; 39. Clamping groove; 40. Clamping slider; 41. U-shaped transmission platform; 42. Crank assembly; 43. Follower rod; 44. Follower groove. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] An automated surface drilling device for light steel profiles is disclosed. This automated device, as the core technical solution, solves the problems of frequent deformation during single-sided drilling, low conveying efficiency, and insufficient feeding accuracy in traditional light steel profile drilling equipment through the coordinated operation of a power transmission structure, a clamping linkage mechanism, and a synchronous feeding mechanism. Belonging to the field of light steel profile processing technology, this automated device is specifically designed to achieve stable drilling and deformation suppression, and efficient continuous processing of thin light steel profiles through precise power transmission matching, elastic clamping synchronous linkage, and quantitative feeding timing adaptation.

[0023] like Figures 1-10 As shown, it includes a base 1, an arch frame 2, a chip collection frame 3, a drilling bit 4, a power unit, a feeding unit, a clamping mechanism, and a clamping mechanism. The arch frame 2 is fixed to the top of the base 1 to support the channel-shaped light steel and guide it to move along the length direction. The chip collection frame 3 is fixed to the top of the base 1 and located below the middle section of the arch frame 2. There are two drilling bits 4, which are oppositely arranged on the upper and lower sides of the channel-shaped light steel and staggered along the length direction of the arch frame 2. The lower drilling bit 4 is fixedly fitted with a grinding ring 5 in the middle section. The power unit drives the drilling bit 4 to rotate and complete the up-and-down opposite or opposite movements. The feed unit is linked with the power unit. The feed pin 6 included in the feed unit is embedded in the slotted light steel drill hole to push it to move quantitatively. When the drilling bit 4 drills, the clamping mechanism applies a reverse counterforce to the slotted light steel to lock the processing end. The clamping mechanism is set at both ends of the chip collection frame 3 to perform auxiliary positioning and clamping of the slotted light steel. The power unit includes a first slide bar 7, a U-shaped mounting platform 8, a U-shaped transmission platform 41, a transmission assembly, and a pair of follower rods 43. The first slide rod 7 is symmetrically fixed inside the chip collection frame 3. The U-shaped mounting platform 8 and the U-shaped transmission platform 41 are both slidably connected to the first slide rod 7 and are set up correspondingly at the top and bottom. The drilling bit 4 is rotatably connected inside the U-shaped mounting platform 8. The follower rod 43 is located inside the chip collection frame 3. One end of the follower rod 43 is provided with a follower groove 44, which is used to connect with the crank plate hinge end of the crank component 42. Since the two drilling bits 4 are set opposite to each other on the upper and lower sides of the channel-shaped light steel, the two follower rods 43 are respectively fixedly connected to the top of the U-shaped mounting platform 8 located above the channel-shaped light steel and the U-shaped transmission platform 41 located above the channel-shaped light steel, so as to realize the linkage transmission between the crank part 42, the U-shaped mounting platform 8, and the U-shaped transmission platform 41. Furthermore, the transmission assembly includes a transmission gear 9, a first transmission rack 10, and a second transmission rack 11. The first transmission rack 10 is fixed on two U-shaped mounting platforms 8 installed vertically, and the second transmission rack 11 is fixed on two U-shaped transmission platforms 41 installed vertically. The transmission gear 9 meshes with the first transmission rack 10 and the second transmission rack 11. The power unit drives the upper and lower racks to move relative to each other, causing the U-shaped transmission platform 41 and the U-shaped mounting platform 8 to move towards each other, thereby causing the two drilling bits 4 to move towards or away from each other along the first slide rod 7. Furthermore, the power unit also includes a cutting motor 12, which is fixedly connected to the U-shaped mounting platform 8, and the output end of the cutting motor 12 is fixedly connected to the first bevel gear 13; One end of the drilling bit 4 passes through the U-shaped mounting platform 8 and is fixedly connected to the second bevel gear 14, and the first bevel gear 13 meshes with the second bevel gear 14. The cutting motor 12 drives the drilling bit 4 to rotate at high speed, and the drilling is completed by a progressive rotary cutting method, which reduces the stress and deformation of the profile. Furthermore, the power unit also includes a worm gear 16, a worm wheel 17, a power motor 18, a crank assembly 42, and a gantry frame 15; The gantry frame 15 is fixed to the top of the chip collection frame 3. The crank component 42 is symmetrically rotated and connected inside the gantry frame 15. The worm gear 17 is fixed to the end of the crank shaft and meshes with the worm 16. The power motor 18 is fixed to the top of the gantry frame 15, and the output end of the power motor 18 is fixedly connected to the worm 16. The crank plate hinge end of the crank component 42 is embedded in the follower groove 44 of the follower rod 43. Through the sliding cooperation between the follower groove 44 and the follower rod 43, the rotational power of the crank component 42 is transmitted to the U-shaped mounting platform 8 and the U-shaped transmission platform 41, driving the two to move towards or away from each other along the first slide rod 7. At the same time, it drives the drilling bit 4 to move up and down in the vertical direction, realizing synchronous feeding or reset of the upper and lower drill bits. Furthermore, the clamping mechanism includes a T-shaped support frame 19, a clamping plate 20, a damper 21, and a clamping spring 22; T-shaped support frame 19 is fixed inside the U-shaped mounting platform 8 or U-shaped transmission platform 41 of the power unit. The damper 21 is fixed to one end of the T-shaped support frame 19. The clamping plate 20 is fixedly connected to the bottom of the damper 21. The clamping spring 22 is sleeved on the outer periphery of the damper 21 and installed between the clamping plate 20 and the end of the damper 21. The middle section of the clamping plate 20 has a through hole 23 that is compatible with the drilling bit 4. When the upper and lower opening drill bit 4 is drilling, the clamping plate 20 passes through the chip removal groove 24 of the arch frame 2 and forms an upper and lower elastic clamping with the opening drill bit 4 on the channel light steel, locking the processing end and reducing shaking. Furthermore, the feeding unit includes a third bevel gear 25, a fourth bevel gear 26, a horizontal bar 27, a vertical bar 28, a transmission slider 29, a central rotating rod 30, a central rotating slider 31, and an ejection spring 32; The third bevel gear 25 is fixed to the bottom of the worm gear 16 of the power unit, the crossbar 27 is fixed inside the chip collection frame 3 along the length of the arch frame 2, the vertical bar 28 is slidably connected to the top of the crossbar 27, and the transmission slider 29 is slidably connected to one end of the vertical bar 28. The central rod 30 is hinged to one end of the transmission slider 29. The fourth bevel gear 26 meshes with the third bevel gear 25 and is fixedly connected to the central slider 31. The central slider 31 is slidably connected to the central rod 30. The push-out spring 32 is sleeved on the outer periphery of the central rod 30. The feed pin 6 is fixed to one end of the transmission slider 29, located directly below the chip removal groove 24, and moves in a rectangular reciprocating motion in conjunction with the power unit. Furthermore, the rectangular reciprocating motion of the inlet pin 6 is specifically as follows: When the drilling bit 4 completes drilling and is reset, the feed pin 6 is inserted into the new hole position of the slotted light steel. Then it moves along the length of the arch frame 2, pushing the channel-shaped light steel to be quantitatively fed; Before the drilling bit 4 moves down to drill again, the feed pin 6 disengages from the hole. Finally, it moves back to the initial position to complete one feeding cycle, which is synchronized with the drilling process. Furthermore, the clamping mechanism includes a U-shaped fixed platform 33, a clamping roller 34, a locking rod 35, a locking handle 36, a fifth bevel gear 37, and a sixth bevel gear 38; U-shaped fixed platforms 33 are symmetrically arranged at both ends of the chip collection frame 3. Clamping rollers 34 are rotatably connected to the inside of the U-shaped fixed platforms 33. Locking rods 35 are rotatably connected to the clamping slide grooves 39 of the U-shaped fixed platforms 33 and are provided with locking threads in opposite directions. The locking rods 35 are threadedly connected to the clamping sliders 40 in the clamping slide grooves 39 through the locking threads. The fifth bevel gear 37 is fixed to the top of the locking rod 35. The sixth bevel gear 38 meshes with the fifth bevel gear 37 and is fixedly connected to one end of the locking handle 36. Rotating the locking handle 36 drives the clamping roller 34 to clamp or release the grooved light steel synchronously through the bevel gear transmission. Furthermore, a chip discharge groove 24 is provided on the top of the arch frame 2 in the area corresponding to the chip collection frame 3. The size of the chip discharge groove 24 is adapted to the clamping plate 20, allowing the clamping plate 20 to pass through smoothly and perform clamping action. The chip collection frame 3 is connected to the interior of the arch frame 2 through the chip discharge groove 24, which is used to collect the chips generated during the drilling process, so as to avoid the accumulation of chips affecting the drilling accuracy and equipment operation.

[0024] In use, firstly, the operator places the light steel to be processed into the arch frame 2 smoothly, and then manually rotates the locking handle 36 to drive the sixth bevel gear 38 to precisely mesh with the fifth bevel gear 37 at the top of the locking rod 35. The locking rod 35 is driven to use the locking threads with opposite directions to push the two clamping sliders 40 in the clamping groove 39 to move towards each other. The clamping sliders 40 drive the clamping rollers 34 in the U-shaped fixed table 33 to move closer together until the clamping rollers 34 are tightly attached to the surface of the light steel, thus completing the positioning and clamping of both ends of the light steel. After the light steel is clamped and fixed, the power motor 18 is started to drive the worm gear 16 to rotate. The worm gear 16 meshes with the worm wheel 17 at the shaft end of the crank component 42, driving the crank component 42 to rotate. The follower groove 44 at one end of the follower rod 43 slides and engages with the crank disc hinge end of the crank component 42, smoothly converting the circumferential rotation of the crank component 42 into the linear reciprocating motion of the follower rod 43, thereby accurately transmitting the power to the U-shaped mounting platform 8 and the U-shaped transmission platform 41. When the follower rod 43 drives the upper U-shaped mounting platform 8 and U-shaped transmission platform 41 to move initially along the first slide rod 7, the transmission components engage synchronously: the transmission gear 9 rotates synchronously under the drive of the first transmission rack 10 and the second transmission rack 11, driving the two racks to move relative to each other, thereby driving the upper and lower U-shaped mounting platforms 8 and the upper and lower U-shaped transmission platforms 41 to move closer to each other along the first slide rod 7, so as to ensure that the upper and lower drilling bits 4 are fed synchronously in the vertical direction. After the feed distance of the drilling bit 4 towards the channel-shaped light steel is adjusted to the correct position, the cutting motor 12 is started, driving the first bevel gear 13 to mesh with the second bevel gear 14 at one end of the drilling bit 4. This converts the horizontal rotational power of the cutting motor 12 into the vertical rotational power of the drilling bit 4. The drilling bit 4 slowly contacts the surface of the light steel and gradually deepens the hole, applying cutting force slowly to ensure accurate hole diameter and smooth hole wall. During this process, the upper and lower drilling bits 4 are staggered along the length of the arch frame 2, effectively avoiding interference when the two drill bits drill simultaneously, ensuring a smooth drilling process and improving processing efficiency. At the same time, the grinding ring 5, which is fixedly sleeved in the middle of the lower drilling bit 4, rotates synchronously at high speed. After the drill bit completes drilling, the grinding ring 5 follows the drill bit to fit the bottom of the hole, precisely grinding away the burrs on the edge of the hole, effectively improving processing efficiency and reducing workpiece turnover, thus reducing the risk of workpiece damage. It is worth noting that in this scheme, when the two drilling bits 4 are fed synchronously in the vertical direction, the drilling bit 4 fed from bottom to top does not perform the drilling process simultaneously with the drilling bit 4 fed from top to bottom. Instead, it is inserted into the already formed hole after the drilling bit 4 fed from top to bottom has completed the drilling and forming work on the channel-shaped light steel. The core task of the drilling bit 4 fed from bottom to top is not to drill a hole again, but to cooperate with the grinding ring 5 fixedly sleeved in the middle of the lower drilling bit 4 to precisely grind and clean the burrs formed at the bottom of the hole due to drilling cutting. Among them, the drilling bit 4 inserted into the hole plays a centering and positioning role, ensuring that the grinding position of the grinding ring 5 is accurate and without deviation. The two work together to form a cross structure, realizing efficient and thorough cleaning of the burrs at the bottom of the hole, further improving the quality and precision of the drilling process. During the synchronous vertical feed of the drilling bit 4, the clamping mechanism works in sync with the drill bit. The clamping plate 20 contacts the surface of the light steel before the drilling bit 4. As the drill bit continues to feed, the clamping plate 20 is subjected to the reaction force of the light steel, compressing the clamping spring 22. The clamping spring 22 generates elastic potential energy, which applies a uniform reverse counterforce to the processed end of the light steel through the clamping plate 20, firmly locking the light steel onto the arch frame 2. This effectively reduces the degree of shaking and deformation of the light steel during drilling, further improving drilling accuracy. The damper 21 simultaneously plays a buffering role, buffering the impact force during the clamping process, preventing excessive clamping force from causing indentations or damage to the surface of the light steel, and reducing vibration generated during drilling, preventing drill bit wear or scratches on the hole wall caused by vibration, thus extending the service life of the drill bit. The design of the clamping plate 20 passing through the chip removal groove 24 at the top of the arch frame 2 enables bidirectional clamping between the upper and lower clamping plates 20 and the drilling bit 4 against the light steel, completely locking the processing end, avoiding hole position displacement caused by the shaking of the processing end, and ensuring consistency during batch processing. After drilling a single hole, the drill bit 4 is reset upwards under the reverse drive of the power unit. At this time, the feed unit and the worm gear 16 of the power unit are linked, driving the third bevel gear 25 and the fourth bevel gear 26 fixed at its bottom to mesh. This drives the fourth bevel gear 26, which is fixedly connected to the transfer slider 31, to rotate synchronously, thereby driving the transfer slider 31 to rotate. The transfer slider 31 and the transfer rod 30 slide together, converting the rotational motion into the swing motion of the transfer rod 30. The transfer rod 30 is hinged to one end of the transmission slider 29, driving the transmission slider 29 to move up and down along the vertical rod 28. The vertical rod 28 is slidably connected to the horizontal rod 27 fixed along the length of the arch frame 2. The horizontal rod 27 provides precise sliding guidance to ensure that the feeding direction is consistent with the length direction of the light steel, avoiding hole spacing deviation caused by feeding offset. When the transmission slider 29 moves upward, it drives the feed pin 6, fixed at one end, to move upward, precisely embedding it into the new hole in the light steel, thus achieving feeding and positioning. Subsequently, the central rotating rod 30 continues to swing, driving the vertical rod 28 to move along the horizontal rod 27 in the processing direction. The feed pin 6 pushes the light steel for quantitative feeding, and the feeding distance is strictly executed according to the preset requirements, ensuring that the spacing between two adjacent holes is precise and uniform. After feeding to the desired position, the power unit reverses the drive, and the transmission slider 29 moves downward along the vertical rod 28, disengaging the feed pin 6 from the hole. Then, the vertical rod 28 reverses and resets along the horizontal rod 27, driving the feed pin 6 back to its initial position, waiting for the next drilling cycle. The entire feeding process is completely synchronized with the drilling process, realizing automated quantitative feeding. Throughout the entire processing, the size of the chip removal groove 24 at the top of the arch frame 2 is adapted to the clamping plate 20, which not only does not affect the passage and clamping action of the clamping plate 20, but also ensures that the metal chips generated during drilling are discharged smoothly. During drilling, some of the metal chips generated by the high-speed cutting of light steel by the drilling bit 4 are carried out with the rotation of the drill bit and fall directly into the chip collection frame 3 below through the chip removal groove 24. The other part of the chips attached to the surface of the drill bit are affected by gravity and centrifugal force during the drill bit reset process and slide down into the chip collection frame 3 through the chip removal groove 24.

[0025] The working principle of the automated light steel profile surface drilling device provided by this invention is as follows: First, the trough-shaped light steel is placed smoothly into the arch frame 2. At this time, the arch frame 2 plays a role in bearing and guiding. Its long strip-shaped trough structure fits precisely with the shape of the light steel, which can limit the left and right displacement of the light steel and guide it to move in a straight line along the length direction. The operator then manually rotates the locking handle 36, causing the sixth bevel gear 38, which is fixed at one end, to rotate synchronously. The sixth bevel gear 38 meshes with the fifth bevel gear 37 at the top of the locking rod 35, driving the locking rod 35 to rotate uniformly within the clamping groove 39 of the U-shaped fixed platform 33. Because the locking rod 35 has locking threads with opposite directions of rotation, its rotation simultaneously pushes the two clamping sliders 40 within the clamping groove 39 to move towards each other. The clamping sliders 40 drive the clamping rollers 34 within the U-shaped fixed platform 33 to move closer together until the clamping rollers 34 are tightly fitted to the surface of the light steel, completing the positioning and clamping of both ends of the light steel. The clamping rollers 34 here employ a rotating design, their function being to clamp the light steel without hindering subsequent feeding actions, achieving independent clamping and feeding. After the light steel is clamped and fixed, the power motor 18 is started to drive the worm gear 16 to rotate. The worm gear 16 meshes with the worm wheel 17 at the shaft end of the crank component 42, synchronously driving the crank component 42 to rotate. Since the crank disc hinge end of the crank component 42 is embedded in the follower groove 44, the two adopt a sliding fit, which can convert the circumferential rotation of the crank component 42 into the linear reciprocating motion of the follower rod 43, thereby accurately transmitting the power to the U-shaped mounting platform 8 and the U-shaped transmission platform 41. Since the two drilling bits 4 are set opposite to each other on the upper and lower sides of the channel-shaped light steel, the two follower rods 43 are fixedly connected to the top of the upper U-shaped mounting platform 8 and the upper U-shaped transmission platform 41 respectively, ensuring that the power can be synchronously transmitted to the two components, the upper U-shaped mounting platform 8 and the upper U-shaped transmission platform 41. When the crank 42 transmits power through the follower rod 43, the follower rod 43 drives the upper U-shaped mounting platform 8 and U-shaped transmission platform 41 to move initially along the first slide rod 7. At this time, the transmission gear 9 rotates synchronously under the drive of the two racks, thereby driving the first transmission rack 10 and the second transmission rack 11 to move relative to each other, causing the upper and lower U-shaped mounting platforms 8 and the upper and lower U-shaped transmission platforms 41 to move towards each other along the first slide rod 7, thereby driving the drilling bit 4 to feed synchronously in the vertical direction, ensuring that the feed speed and feed distance of the upper and lower drill bits are consistent, avoiding hole position deviation, and improving drilling accuracy. After the drill bit spacing is adjusted, the cutting motor 12 starts and begins drilling. The cutting motor 12 drives the first bevel gear 13 to rotate, which in turn meshes with the second bevel gear 14 at one end of the drilling bit 4. This converts the horizontal rotational power of the cutting motor 12 into the vertical rotational power of the drilling bit 4, causing it to rotate at high speed. This equipment uses a progressive cutting method, where the drill bit slowly contacts the surface of the light steel and gradually deepens the hole. This method applies cutting force slowly, avoiding deformation of the light steel profile due to excessive instantaneous impact force, and ensuring accurate hole diameter and smooth hole wall. During this process, the upper and lower drilling bits 4 are staggered along the length of the arch frame 2 to prevent interference when the two drill bits are drilling simultaneously, ensuring a smooth drilling process. At the same time, the grinding ring 5, which is fixedly sleeved in the middle of the lower hole drill bit 4, rotates synchronously at high speed. When the drill bit finishes drilling, the grinding ring 5 will fit against the bottom of the hole with the drill bit to grind and remove the burrs on the bottom of the hole. There is no need to add an extra deburring process, which effectively improves processing efficiency and processing quality. When the drill bit 4 feeds synchronously in the vertical direction, the clamping plate 20 contacts the surface of the light steel before the drill bit 4. As the drill bit continues to feed, the clamping plate 20 is subjected to the reaction force of the light steel, compressing the clamping spring 22. The clamping spring 22 generates elastic potential energy, which applies a reverse resisting force to the processing end of the light steel through the clamping plate 20, firmly locking the light steel onto the arch frame 2, thereby reducing the degree of shaking and deformation of the light steel during drilling. The damper 21 buffers the impact force during the clamping process, preventing excessive clamping force from causing indentations and damage to the surface of the light steel, while also reducing vibration generated during drilling, further ensuring the accuracy of the hole diameter. The design of the clamping plate 20 passing through the chip removal groove 24 at the top of the arch frame 2 enables bidirectional clamping of the light steel by the upper and lower clamping plates 20 and the drill bit 4, locking the processing end and further improving the stability of the drilling process. After drilling a single hole, the drill bit 4 resets upward under the reverse drive of the power unit. At this time, the feeding unit and the worm gear 16 of the power unit are linked, and the quantitative feeding process is started synchronously to ensure the accuracy of the next hole. As the worm gear 16 rotates, it drives the third bevel gear 25 to mesh with the fourth bevel gear 26, which in turn drives the fourth bevel gear 26 to be fixedly connected to the transfer slider 31, driving the transfer slider 31 to rotate. The transfer slider 31 is slidably connected to the transfer rod 30, and its rotational motion is converted into the swing motion of the transfer rod 30. The transfer rod 30 is hinged to one end of the transmission slider 29, driving the transmission slider 29 to move up and down along the vertical rod 28. The vertical rod 28 is slidably connected to the horizontal rod 27 fixed along the length of the arch frame 2. The function of the horizontal rod 27 is to provide sliding guidance for the vertical rod 28 to ensure the accuracy of the feeding direction. When the transmission slider 29 moves upward, it drives the feed pin 6, fixed at one end, to move upward, precisely embedding it into the new hole in the light steel, thus achieving feeding and positioning. Subsequently, the central rotating rod 30 continues to swing, driving the vertical rod 28 to move along the horizontal rod 27 in the processing direction, thereby pushing the light steel to feed quantitatively through the feed pin 6. The feeding distance can be preset through equipment debugging to ensure accurate spacing between two adjacent holes. After feeding to the desired position, the power unit reverses the drive, and the transmission slider 29 moves downward along the vertical rod 28, disengaging the feed pin 6 from the hole. Then, the vertical rod 28 reverses and resets along the horizontal rod 27, driving the feed pin 6 back to its initial position, waiting for the next drilling cycle. The entire feeding process is completely synchronized with the drilling process, achieving automated quantitative feeding. Throughout the machining process, the chip removal groove 24 is located at the top of the arch frame 2, corresponding to the chip collection frame 3. Its size is adapted to the clamping plate 20, ensuring that it does not interfere with the passage and clamping action of the clamping plate 20 while guaranteeing the smooth discharge of metal chips generated during drilling. During drilling, some of the metal chips generated by the high-speed cutting of light steel by the drill bit 4 are carried out with the rotation of the drill bit and fall directly into the chip collection frame 3 below through the chip removal groove 24. The remaining chips adhering to the surface of the drill bit are affected by gravity and centrifugal force during the drill bit's resetting process and slide down through the chip removal groove 24 into the chip collection frame 3. The function of the chip collection frame 3 is to collect all the chips, preventing chip accumulation in the drilling area from causing hole position deviation and drill bit wear.

[0026] 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 claimed invention.

Claims

1. An automated surface drilling device for light steel profiles, characterized in that: Includes base (1), arch frame (2), chip collection frame (3), drilling bit (4), power unit, feed unit, clamping mechanism and clamping mechanism; The arch frame (2) is fixed to the top of the base (1), the chip collection frame (3) is fixed to the top of the base (1) and located below the middle section of the arch frame (2), and there are two drilling bits (4), which are set opposite to each other on the upper and lower sides of the channel light steel and staggered along the length of the arch frame (2). The middle section of the lower drilling bit (4) is fixedly fitted with a grinding ring (5). The power unit drives the drilling bit (4) to rotate and complete the up-and-down or separation motion. The feed unit is linked with the power unit. The feed pin (6) it contains is embedded in the slotted light steel hole to push it to move quantitatively. When the drilling bit (4) drills, the clamping mechanism applies a reverse contact force to the slotted light steel to lock the processing end. The clamping mechanism is set at both ends of the chip collection frame (3) to perform auxiliary positioning and clamping of the slotted light steel.

2. The automated light steel profile surface drilling equipment according to claim 1, characterized in that: The power unit includes a first slide bar (7), a U-shaped mounting platform (8), a U-shaped transmission platform (41), a transmission assembly, and a pair of follower rods (43). The first slide rod (7) is symmetrically fixed inside the chip collection frame (3). The U-shaped mounting platform (8) and the U-shaped transmission platform (41) are slidably connected to the first slide rod (7) and are set up correspondingly above and below. The drilling bit (4) is rotatably connected inside the U-shaped mounting platform (8). The follower rod (43) is located inside the chip collection frame (3). One end of the follower rod (43) is provided with a follower groove (44) for connecting with the crank plate hinge end of the crank component (42).

3. The automated light steel profile surface drilling equipment according to claim 2, characterized in that: The transmission assembly includes a transmission gear (9), a first transmission rack (10), and a second transmission rack (11). The first transmission rack (10) is fixed on two U-shaped mounting platforms (8) installed vertically, and the second transmission rack (11) is fixed on two U-shaped transmission platforms (41) installed vertically. The transmission gear (9) meshes with the first transmission rack (10) and the second transmission rack (11). The power unit drives the upper and lower racks to move relative to each other, causing the U-shaped transmission platform (41) and the U-shaped mounting platform (8) to move towards each other, thereby driving the two drilling bits (4) to move towards or away from each other along the first slide bar (7).

4. The automated light steel profile surface drilling equipment according to claim 3, characterized in that: The power unit also includes a cutting motor (12), which is fixedly connected to the U-shaped mounting platform (8), and the output end of the cutting motor (12) is fixedly connected to the first bevel gear (13). One end of the drilling bit (4) passes through the U-shaped mounting platform (8) and is fixedly connected to the second bevel gear (14), and the first bevel gear (13) meshes with the second bevel gear (14).

5. The automated light steel profile surface drilling equipment according to claim 1, characterized in that: The power unit also includes a worm (16), a worm wheel (17), a power motor (18), a crank (42), and a gantry (15). The gantry frame (15) is fixed to the top of the chip collection frame (3), the crank (42) is symmetrically rotated and connected inside the gantry frame (15), the worm gear (17) is fixed to the end of the crank shaft and meshes with the worm (16), the power motor (18) is fixed to the top of the gantry frame (15), and the output end of the power motor (18) is fixedly connected to the worm (16); The crank plate hinge end of the crank component (42) is embedded in the follower groove (44) of the follower rod (43). Through the sliding cooperation between the follower groove (44) and the follower rod (43), the rotational power of the crank component (42) is transmitted to the U-shaped mounting platform (8) and the U-shaped transmission platform (41), driving the two to move towards or away from each other along the first slide rod (7), while driving the drilling bit (4) to move up and down in the vertical direction.

6. The automated light steel profile surface drilling equipment according to claim 1, characterized in that: The clamping mechanism includes a T-shaped support frame (19), a clamping plate (20), a damper (21), and a clamping spring (22). The T-shaped support frame (19) is fixed inside the U-shaped mounting platform (8) or U-shaped transmission platform (41) of the power unit. The damper (21) is fixed at one end of the T-shaped support frame (19). The clamping plate (20) is fixedly connected to the bottom of the damper (21). The clamping spring (22) is sleeved on the outer periphery of the damper (21) and installed between the clamping plate (20) and the end of the damper (21). The middle section of the clamping plate (20) has a through hole (23) that is compatible with the drilling bit (4).

7. The automated light steel profile surface drilling equipment according to claim 1, characterized in that: The feeding unit includes a third bevel gear (25), a fourth bevel gear (26), a horizontal bar (27), a vertical bar (28), a transmission slider (29), a central rotating rod (30), a central rotating slider (31), and an ejector spring (32). The third bevel gear (25) is fixed to the bottom of the worm (16) of the power unit, the crossbar (27) is fixed inside the chip collection frame (3) along the length of the arch frame (2), the vertical rod (28) is slidably connected to the top of the crossbar (27), and the transmission slider (29) is slidably connected to one end of the vertical rod (28). The central rod (30) is hinged to one end of the transmission slider (29), the fourth bevel gear (26) meshes with the third bevel gear (25) and is fixedly connected to the central slider (31), the central slider (31) is slidably connected to the central rod (30), and the push-out spring (32) is sleeved on the outer periphery of the central rod (30); The feed pin (6) is fixed to one end of the transmission slider (29) and located directly below the chip removal groove (24), and moves in a rectangular reciprocating motion in conjunction with the power unit.

8. The automated light steel profile surface drilling equipment according to claim 7, characterized in that: The rectangular reciprocating motion of the feed pin (6) is specifically as follows: When the drilling bit (4) finishes drilling and is reset, the feed pin (6) is inserted into the new hole position of the slotted light steel. Then it moves along the length of the arch frame (2) to push the channel light steel to feed quantitatively; Before the drilling bit (4) moves down to drill again, the feed pin (6) is disengaged from the hole; Finally, it moves back to the initial position to complete one feeding cycle, synchronizing with the drilling process.

9. The automated light steel profile surface drilling equipment according to claim 1, characterized in that: The clamping mechanism includes a U-shaped fixed platform (33), a clamping roller (34), a locking rod (35), a locking handle (36), a fifth bevel gear (37), and a sixth bevel gear (38). The U-shaped fixed platform (33) is symmetrically arranged at both ends of the chip collection frame (3). The clamping roller (34) is rotatably connected to the inside of the U-shaped fixed platform (33). The locking rod (35) is rotatably connected to the clamping slide groove (39) of the U-shaped fixed platform (33) and is provided with locking threads with opposite rotation directions. The locking rod (35) is threadedly connected to the clamping slider (40) in the clamping slide groove (39) through the locking thread. The fifth bevel gear (37) is fixed to the top of the locking rod (35), the sixth bevel gear (38) meshes with the fifth bevel gear (37) and is fixedly connected to one end of the locking handle (36). Rotating the locking handle (36) drives the clamping roller (34) to clamp or release the slotted light steel synchronously through the bevel gear transmission.

10. The automated light steel profile surface drilling equipment according to claim 1, characterized in that: The top of the arch frame (2) is provided with a chip discharge groove (24) corresponding to the chip collection frame (3). The size of the chip discharge groove (24) is adapted to the abutment plate (20) so that the abutment plate (20) can pass through smoothly and perform abutment action. The chip collection frame (3) is connected to the inside of the arch frame (2) through the chip discharge groove (24).

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