Miniature drill bit for processing PCB (Printed Circuit Board)

Abstract

The invention belongs to the technical field of PCB (printed circuit board) drilling, and particularly relates to a miniature drill bit for processing a PCB, which comprises a worktable, a fixed plate is slidably connected to the upper surface of the worktable, a movable plate is slidably connected to the upper surface of the fixed plate, a second motor is fixedly connected to the upper surface of the worktable, a connecting rod is fixedly connected to the output end of the second motor, and a first motor is fixedly connected to the connecting rod. A double-shaft motor is fixedly connected between the two limiting plates, a drill bit is fixedly connected to the lower output end of the double-shaft motor, and the grinding piece comprises a fourth motor fixedly connected to the upper surface of the workbench. By arranging a grinding head, the problem that in the process of drilling holes by actually using the PCB microbit, the microbit encounters different material layers in the PCB, and the grinding efficiency is greatly improved is solved; comprising glass fiber cloth, epoxy resin and other base materials and copper foil and other conductive parts, and the hardness and the wear resistance of the materials are different, so that a drill bit is abraded to a certain degree during drilling, and unqualified PCBs are processed.

Description

Technical Field

[0001] The invention belongs to the technical field of PCB board drilling, in particular to a micro drill bit for processing PCB boards. Background Art

[0002] PCB board is one of the components of the electronics industry and is generally used to integrate various circuits. The quality of PCB board directly affects the stability of integrated circuits. Therefore, mature technology is required when processing PCB board. Most of the PCB boards are processed using drill bits of PCB drilling equipment.

[0003] In the process of using the existing PCB board drilling equipment, a motor is controlled up and down by a hydraulic cylinder on the workbench of the PCB board drilling equipment, and a PCB board micro drill with a threaded circumferential surface is fixedly connected to the output end of the motor. The hydraulic cylinder drives the motor and the PCB board micro drill to approach the PCB board, and then starts the motor to drive the micro drill. The PCB board can be drilled when the micro drill approaches the PCB board, and then used to install screws and some electronic components. However, in the actual process of using the PCB board micro drill to drill holes, the micro drill will encounter different material layers inside the PCB board, including glass fiber cloth, epoxy resin and other substrates and copper foil and other conductive parts. The hardness and wear resistance of these materials are different, so the drill will cause a certain degree of wear to the drill during drilling, especially when the drill encounters a harder material, such as a glass fiber bundle, the wear will be more obvious. In addition, the high temperature generated during the drilling process will also accelerate the wear of the drill, thereby causing the drilling quality of the micro drill to decline, resulting in the problem of processing unqualified PCB boards.

[0004] To this end, the present invention provides a micro drill for processing a PCB board. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a micro drill for processing a PCB board described in the present invention comprises a workbench, the upper surface of the workbench is slidably connected to a fixed plate, the upper surface of the fixed plate is slidably connected to a movable plate, the upper surface of the workbench is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a support frame, one side of the support frame is slidably connected to a support plate, one side of the support plate is fixedly connected to two limiting plates, a dual-axis motor is fixedly connected between the two limiting plates, a drill is estimated to be provided at the lower output end of the dual-axis motor, and a grinding piece is provided on the upper surface of the workbench, and the grinding piece comprises a fourth motor fixedly connected to the upper surface of the workbench; A grinding head is fixedly connected to the output end of the fourth motor, the cross section of the grinding head is conical, and a grinding cavity is provided inside the grinding head.

[0007] Preferably, a guide tube is fixedly connected to the bottom end of the grinding head, and a collection frame is fixedly connected to the position of the workbench corresponding to the guide tube. The collection frame is annular and can collect the metal debris produced by grinding.

[0008] Preferably, a rotating wheel is fixedly connected to the upper output end of the dual-axis motor, a first steel strip is fixedly connected to the circumferential surface of the rotating wheel, a fixed frame is fixedly connected to the side of the support plate close to the dual-axis motor, a reciprocating screw is rotatably connected in the fixed frame, a rotating wheel is fixedly connected to the top end of the reciprocating screw, transmission is transmitted between the two rotating wheels through the first steel strip, a cooling component is provided on the circumferential surface of the reciprocating screw, and the cooling component is used to cool the drill bit.

[0009] Preferably, the cooling component comprises an extrusion plate slidably connected to the circumferential surface of the reciprocating screw, a nozzle is fixedly connected to the lower surface of the fixed frame, the nozzle is tilted and aligned with the drill bit, and a plurality of nozzles are opened at the bottom end of the nozzle.

[0010] Preferably, two fixing holes are provided on the upper surface of the fixing frame, and the two fixing holes are used to balance the pressure inside the fixing frame.

[0011] Preferably, positioning blocks are fixedly connected to both sides of one of the limit plates, a telescopic rod is fixedly connected to the lower surface of each of the positioning blocks, and a positioning plate is fixedly connected to the bottom end of each of the telescopic rods.

[0012] Preferably, the top end of the reciprocating screw is rotatably connected to a limiting block, and the limiting block is fixedly connected to the support plate.

[0013] Preferably, a third motor is fixedly connected to the upper surface of the support frame, an output shaft of the third motor is provided with a reciprocating thread, and a sliding block is slidably connected to the circumferential surface of the output shaft of the third motor, and a support plate is fixedly connected to one side of the sliding block.

[0014] Preferably, a first motor is fixedly connected to the upper surface of the workbench, a first screw is fixedly connected to the output end of the first motor, the circumferential surface of the first screw is a reciprocating thread, a movable plate is slidably connected to the circumferential surface of the first screw, a positioning plate is fixedly connected to one side of the first motor, a first guide rail is provided on the upper surface of the positioning plate, a first guide block is slidably connected in the first guide rail, a rotating shaft is rotatably connected to one side of the first guide block, a fixed roller is fixedly connected to the circumferential surface of the rotating shaft, and an adsorption cloth is fixedly connected to the circumferential surface of the fixed roller.

[0015] Preferably, a first gear is fixedly connected to one end of the rotating shaft close to the first guide block, a rack plate is meshed with a position of the positioning plate corresponding to the first gear, and the rotating shaft can rotate along the rack plate through the first gear.

[0016] The beneficial effects of the present invention are as follows: 1. The micro drill for processing PCB boards described in the present invention can start the second motor, which will drive the connecting rod to rotate. The rotation of the connecting rod can drive the drill fixed to one side of the support plate, thereby mobilizing the drill to move above the grinding head. At this time, the worn drill is driven to be inserted into the grinding head by controlling the support plate to move downward, and then the fourth motor is started. After the fourth motor is started, it will drive the grinding head at its output end to grind the worn part of the tip of the drill, thereby achieving a repairing effect. After the grinding is completed, the support plate and the second motor drive the drill back to the top of the moving plate to continue drilling, thereby saving working time and improving the efficiency of PCB board processing.

[0017] 2. The micro drill for processing PCB boards described in the present invention achieves an automatic collection effect by allowing the metal dust generated by grinding to fall into a guide tube along a grinding cavity in the grinding head during the grinding process of the drill, and then flow along the guide tube to a collection frame on a workbench. A certain amount of water is placed in the collection frame to prevent the metal dust from escaping and polluting the working environment.

[0018] 3. The micro drill for processing PCB boards described in the present invention has a rotating wheel fixedly connected to the top of a dual-axis motor. When the dual-axis motor drives the rotating wheel to rotate, it will drive the first strip steel to rotate, thereby driving the rotating wheel on the top of the fixed frame to rotate. The rotation of the rotating wheel on the fixed frame will drive the reciprocating screw fixed to its lower surface to rotate. The rotation of the reciprocating screw can activate the cooling component in the fixed frame to cool the drill bit that is continuously drilling, thereby achieving the effect of improving the drilling performance of the drill bit.

[0019] 4. The micro drill for processing PCB boards described in the present invention starts the first guide rail of the positioning plate after drilling holes in the PCB board, so that the first guide rail drives the first guide block to slide along the first guide rail, thereby driving the fixed roller on one side of the first guide block to move. The movement of the fixed roller can drive the adsorption cloth on its circumferential surface to mechanically adhere to various debris particles on the surface of the PCB board, thereby achieving the effect of improving the processing quality of the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention; Figure 2 It is a structural schematic diagram of the main body of the present invention; Figure 3 is a side view of the main body of the present invention; Figure 4 It is a structural schematic diagram of the drill bit of the present invention; Figure 5 It is a structural schematic diagram of the fixed roller of the present invention; Figure 6 It is a schematic diagram of the structure of the collection frame of the present invention; Figure 7 is a cross-sectional view of the collection frame of the present invention; In the figure: 1. Workbench; 2. Fixed plate; 21. Moving plate; 3. First motor; 31. First screw rod; 32. Positioning plate; 33. First guide rail; 34. First guide block; 35. Rotating shaft; 36. Fixed roller; 37. Adsorption cloth; 38. First gear; 39. Rack plate; 4. Second motor; 41. Connecting rod; 42. Support frame; 43. Sliding block; 44. Third motor; 45. Support plate; 46. Stop plate; 47. Double-axis motor; 48. Drill; 49. Rotor; 410. First strip steel; 411. Stop block; 412. Fixed frame; 413. Reciprocating screw; 414. Extrusion plate; 415. Nozzle; 416. Fixed hole; 417. Positioning block; 418. Telescopic rod; 419. Positioning plate; 5. Collection frame; 51. Fourth motor; 52. Grinding head; 53. Guide tube. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] Example:

[0024] like Figures 1 to 7 As shown, a micro drill for processing a PCB board described in an embodiment of the present invention comprises a workbench 1, a fixed plate 2 is slidably connected to the upper surface of the workbench 1, a movable plate 21 is slidably connected to the upper surface of the fixed plate 2, a second motor 4 is fixedly connected to the upper surface of the workbench 1, a connecting rod 41 is fixedly connected to the output end of the second motor 4, one end of the connecting rod 41 is fixedly connected to a support frame 42, a support plate 45 is slidably connected to one side of the support frame 42, two limit plates 46 are fixedly connected to one side of the support plate 45, a dual-axis motor 47 is fixedly connected between the two limit plates 46, a drill 48 is estimated to be provided at the lower output end of the dual-axis motor 47, a grinding piece is arranged on the upper surface of the workbench 1, and the grinding piece comprises a fourth motor 51 fixedly connected to the upper surface of the workbench 1; a grinding head 52 fixedly connected to the output end of the fourth motor 51, the cross section of the grinding head 52 is conical, and a grinding cavity is provided inside the grinding head 52.

[0025] Specifically, in the process of using the existing PCB board drilling equipment, a motor is controlled up and down by a hydraulic cylinder on the workbench 1 of the PCB board drilling equipment, and a PCB board micro drill 48 with a threaded circumferential surface is fixedly connected to the output end of the motor. The hydraulic cylinder drives the motor and the PCB board micro drill 48 close to the PCB board, and then starts the motor to drive the micro drill 48. The micro drill 48 can drill holes in the PCB board when it is close to the PCB board, and then it is used to install screws and some electronic components. However, in the actual process of using the PCB board micro drill 48 to drill holes, the micro drill 48 will encounter different material layers inside the PCB board, including glass fiber cloth, epoxy resin and other substrates and copper foil and other conductive parts. The hardness and wear resistance of these materials are different. Therefore, a certain degree of wear will be caused to the drill 48 during drilling, especially when the drill 48 encounters a harder material, such as a glass fiber bundle, the wear will be more obvious. In addition, the high temperature generated during the drilling process will also accelerate the wear of the drill 48, thereby causing the drilling quality of the micro drill 48 to decrease, resulting in the problem of processing unqualified PCB boards. Therefore, the present invention solves this problem by setting a certain structure. First, the PCB board that needs to be drilled is placed on the movable plate 21, and then the position of the movable plate 21 is adjusted to make the drill bit 48 align with the position where the drilling is required. After the PCB board is positioned, the support plate 45 on the support frame 42 on one side of the connecting rod 41 is started, and the support plate 45 is controlled to move downward, thereby driving the drill bit 48 fixed on one side of the support plate 45 to approach the PCB board. When the drill bit 48 abuts against the PCB board, the dual-axis motor 47 is started. After the dual-axis motor 47 is started, it will drive the drill bit 48 to rotate, and the rotating drill bit 48 can drill holes in the PCB board. After the drilling of the PCB board is completed, the support plate 45 is controlled to move upward to drive the drill bit 48 to reset. After continuously drilling holes in the PCB board, because the micro drill bit 48 will encounter different material layers inside the PCB board, including glass The hardness and wear resistance of substrates such as glass fiber cloth, epoxy resin and conductive parts such as copper foil are different. Therefore, the drill bit 48 will be worn to a certain extent when drilling. At this time, the second motor 4 can be started, and the second motor 4 will drive the connecting rod 41 to rotate. The rotation of the connecting rod 41 can drive the drill bit 48 fixed to one side of the support plate 45, so as to mobilize the drill bit 48 to move above the grinding head 52. At this time, the worn drill bit 48 is driven to be inserted into the grinding head 52 by controlling the support plate 45 to move downward, and then the fourth motor 51 is started. After the fourth motor 51 is started, it will drive the grinding head 52 at its output end to grind the worn part of the tip of the drill bit 48, thereby achieving a repairing effect. After the grinding is completed, the support plate 45 and the second motor 4 drive the drill bit 48 back to the top of the movable plate 21 to continue drilling, thereby saving working time and improving the efficiency of PCB board processing. The invention solves the problem that in the actual process of drilling holes in a PCB board using a micro drill bit 48, the micro drill bit 48 will encounter different material layers inside the PCB board, including substrates such as glass fiber cloth and epoxy resin, and conductive parts such as copper foil. The hardness and wear resistance of these materials are different, so a certain degree of wear will be caused to the drill bit 48 during drilling, resulting in the production of unqualified PCB boards.

[0026] like Figure 6 and Figure 7 As shown, in this embodiment, a guide tube 53 is fixedly connected to the bottom end of the grinding head 52, and a collecting frame 5 is fixedly connected to the position of the workbench 1 corresponding to the guide tube 53. The collecting frame 5 is annular and can collect the metal debris produced by grinding.

[0027] Specifically, in the process of the grinding head 52 grinding the drill bit 48, the metal dust written by grinding will fall into the guide tube 53 along the grinding cavity in the grinding head 52, and then flow to the collection frame 5 on the workbench 1 along the guide tube 53, thereby achieving the effect of automatic collection, and a certain amount of water is placed in the collection frame 5 to prevent metal dust from escaping and polluting the working environment.

[0028] like Figure 4 As shown, the upper output end of the dual-axis motor 47 of this embodiment is fixedly connected with a rotating wheel 49, the circumferential surface of the rotating wheel 49 is fixedly connected with a first steel strip 410, the support plate 45 is fixedly connected with a fixed frame 412 on one side close to the dual-axis motor 47, a reciprocating screw 413 is rotatably connected in the fixed frame 412, the top end of the reciprocating screw 413 is fixedly connected with the rotating wheel 49, the first steel strip 410 is used for transmission between the two rotating wheels 49, and a cooling component is arranged on the circumferential surface of the reciprocating screw 413, which is used to cool the drill bit 48.

[0029] Specifically, in the process of the dual-axis motor 47 driving the drill bit 48 to rotate and drill holes, a rotating wheel 49 is fixedly connected to the top of the dual-axis motor 47. After the dual-axis motor 47 drives the rotating wheel 49 to rotate, it will drive the first strip steel 410 to rotate, thereby driving the rotating wheel 49 on the top of the fixed frame 412 to rotate. The rotation of the rotating wheel on the fixed frame 412 will drive the reciprocating screw 413 fixed on its lower surface to rotate. The rotation of the reciprocating screw 413 can activate the cooling component in the fixed frame 412 to cool the drill bit 48 that is continuously drilling holes, thereby achieving the effect of improving the drilling performance of the drill bit 48.

[0030] like Figure 4 As shown, the cooling element of this embodiment includes an extrusion plate 414 slidably connected to the circumferential surface of a reciprocating screw 413, a nozzle 415 is fixedly connected to the lower surface of a fixed frame 412, and the nozzle 415 is tilted and aligned with the drill bit 48, and a plurality of nozzles are opened at the bottom end of the nozzle 415.

[0031] Specifically, when the reciprocating screw 413 rotates, it will drive the extrusion plate 414 on its circumferential surface to move up and down inside the fixed frame 412, thereby squeezing the air in the fixed frame 412 and spraying it out from the nozzle 415, physically cooling the drilling hole of the drill bit 48, and at the same time achieving the effect of blowing away the hard particles generated at the drilling hole, preventing the debris generated by the drilling from being entrained into the drilling hole, thereby causing burrs on the inner wall of the drilled hole, thereby achieving the effect of improving the drilling quality.

[0032] like Figure 4 As shown, in this embodiment, two fixing holes 416 are opened on the upper surface of the fixing frame 412 , and the two fixing holes 416 are used to balance the pressure inside the fixing frame 412 .

[0033] Specifically, by opening two fixing holes 416 on the upper surface of the fixed frame 412, when the reciprocating screw 413 drives the extrusion plate 414 to squeeze the air in the fixed frame 412 to cool the drill bit 48, the fixing holes 416 balance the pressure of the extrusion plate 414 and the upper space of the fixed frame 412, preventing the extrusion plate 414 from receiving a back suction force, thereby achieving a better effect of enabling the extrusion plate 414 to physically cool the drill bit 48.

[0034] like Figure 4 As shown, in this embodiment, positioning blocks 417 are fixedly connected to both sides of one of the limit plates 46 , a telescopic rod 418 is fixedly connected to the lower surface of each positioning block 417 , and a positioning plate 419 is fixedly connected to the bottom end of each telescopic rod 418 .

[0035] Specifically, when the drill bit 48 abuts against the PCB board to drill a hole while the support plate 45 drives the drill bit 48 to descend, the positioning plates 419 on both sides of the limit plate 46 will also abut against the PCB board. Then, as the drill bit 48 continues to move downward, the positioning plates 419 will squeeze the telescopic column above, causing the telescopic column to move up and down. The positioning plates 419 have a pressing effect, pressing both sides of the drill hole, making the drilling more stable and improving the quality of the drilling.

[0036] like Figure 4 As shown, in this embodiment, the top end of the reciprocating screw 413 is rotatably connected to the limiting block 411 , and the limiting block 411 is fixedly connected to the support plate 45 .

[0037] Specifically, by rotatably connecting the limit block 411 at the top of the reciprocating screw 413, and then fixing the limit block 411 to the surface of the support plate 45, the rotation of the reciprocating screw 413 is supported by the limit block 411, thereby reducing the vibration that may occur during the rotation of the reciprocating screw 413 and making the operation of the reciprocating screw 413 more stable.

[0038] Example:

[0039] like Figures 2 to 7 As shown, compared with Example 1, another embodiment of the present invention is: a third motor 44 is fixedly connected to the upper surface of the support frame 42, the output shaft of the third motor 44 is provided with a reciprocating thread, and the circumferential surface of the output shaft of the third motor 44 is slidably connected to a sliding block 43, and a support plate 45 is fixedly connected to one side of the sliding block 43.

[0040] Specifically, in the process of using the support plate 45 to drive the drill bit 48 to move up and down, the third motor 44 fixedly connected to the upper surface of the support frame 42 is started. The start of the third motor 44 will drive the sliding block 43 slidably connected to the circumferential surface of its output shaft to slide. The sliding of the sliding block 43 can drive the support plate 45 fixedly connected to one side of the sliding block 43 to slide up and down, and one side of the support plate 45 is fixedly connected to the dual-axis motor 47 through two limit plates 46, and then the drill bit 48 is fixedly connected to the bottom end of the dual-axis motor 47, thereby achieving the effect of stably driving the drill bit 48 through the support plate 45.

[0041] like Figure 1 As shown, the upper surface of the workbench 1 of this embodiment is fixedly connected to the first motor 3, the output end of the first motor 3 is fixedly connected to the first screw rod 31, the circumferential surface of the first screw rod 31 is a reciprocating thread, the circumferential surface of the first screw rod 31 is slidably connected to the moving plate 21, one side of the first motor 3 is fixedly connected to a positioning plate 32, the upper surface of the positioning plate 32 is provided with a first guide rail 33, the first guide rail 33 is slidably connected to the first guide block 34, one side of the first guide block 34 is rotatably connected to a rotating shaft 35, the circumferential surface of the rotating shaft 35 is fixedly connected to a fixed roller 36, and the circumferential surface of the fixed roller 36 is fixedly connected to an adsorption cloth 37.

[0042] Specifically, after drilling the holes in the PCB board, the first guide rail 33 of the positioning plate 32 is started, so that the first guide rail 33 drives the first guide block 34 to slide along the first guide rail 33, thereby driving the fixed roller 36 on one side of the first guide block 34 to move. The movement of the fixed roller 36 can drive the adsorption cloth 37 on its circumferential surface to mechanically adhere to various debris particles on the surface of the PCB board, thereby achieving the effect of improving the processing quality of the PCB board.

[0043] like Figure 5 As shown, in this embodiment, a first gear 38 is fixedly connected to one end of the rotating shaft 35 close to the first guide block 34 , and a rack plate 39 is meshed with the position of the positioning plate 32 corresponding to the first gear 38 , and the rotating shaft 35 can rotate along the rack plate 39 through the first gear 38 .

[0044] Specifically, in the process of the first guide block 34 driving the fixed roller 36 to move, by fixing the first gear 38 on one end of the rotating shaft 35 close to the first guide block 34, when the first guide block 34 moves with the rotating shaft 35, the first gear 38 can drive the rotating shaft 35 to rotate along the movement of the rack plate 39, thereby driving the adsorption cloth 37 on the circumferential surface of the fixed roller 36 to better clean the surface of the PCB board, thereby improving the cleaning effect of the adsorption cloth 37.

[0045] Working principle: first, place the PCB board that needs to be drilled on the moving plate 21, and then adjust the position of the moving plate 21 to align the drill bit 48 with the position where the drilling is required. After the PCB board is positioned, start the third motor 44 fixed to the upper surface of the support frame 42. The start of the third motor 44 will drive the sliding block 43 connected to the circumferential surface of its output shaft to slide. The sliding of the sliding block 43 can drive the support plate 45 fixed to one side of the sliding block 43 to slide up and down, and one side of the support plate 45 is fixed to the dual-axis motor 47 through two limit plates 46. Then the drill bit 48 is fixed to the bottom end of the dual-axis motor 47, so that the support plate 45 can stably drive the drill bit 48. When the support plate 45 drives the drill bit 48 to descend, the drill bit 48 abuts against the PCB board to drill a hole, and the positioning plates 419 on both sides of the limit plate 46 also abut against the PCB board. Then, as the drill bit 48 continues to move downward, the positioning plates 419 will squeeze the telescopic column above, so that the telescopic column moves up and down, and the positioning plates 419 play a pressing effect, pressing both sides of the drill hole, making the drilling more stable and improving the quality of the drilling. When the drill bit 48 contacts the PCB board, the dual-axis motor 47 is started. After the dual-axis motor 47 is started, the drill bit 48 is driven to rotate, and the rotating drill bit 48 can drill holes in the PCB board. In the process of the dual-axis motor 47 driving the drill bit 48 to rotate and drill holes, a rotating wheel 49 is fixedly connected to the top of the dual-axis motor 47. After the dual-axis motor 47 drives the rotating wheel 49 to rotate, it will drive the first strip steel 410 to rotate, thereby driving the rotating wheel 49 at the top of the fixed frame 412 to rotate. The rotation of the rotating wheel on the fixed frame 412 will drive the reciprocating screw 413 fixed to its lower surface to rotate. The rotation of the reciprocating screw 413 can start the cooling component in the fixed frame 412 to cool down the drill bit 48 that is constantly drilling holes, thereby achieving the effect of improving the drilling performance of the drill bit 48. After drilling the PCB board, the support plate 45 is controlled to move upward to drive the drill bit 48 to reset. After drilling the PCB board continuously, because the micro drill bit 48 will encounter different material layers inside the PCB board, including glass fiber cloth, epoxy resin and other substrates and copper foil and other conductive parts, these materials have different hardness and wear resistance, so the drill bit 48 will be worn to a certain extent during drilling. At this time, the second motor 4 can be started, and the second motor 4 will drive the connecting rod 41 to rotate, and the rotation of the connecting rod 41 can drive one side of the support plate 45 to be fixed The drill bit 48 is moved to the top of the grinding head 52, and then the support plate 45 is controlled to move downward to drive the worn drill bit 48 to be inserted into the grinding head 52, and then the fourth motor 51 is started. After the fourth motor 51 is started, it will drive the grinding head 52 at its output end to grind the worn part of the tip of the drill bit 48, thereby achieving a repairing effect. After the grinding is completed, the support plate 45 and the second motor 4 drive the drill bit 48 back to the top of the moving plate 21 to continue drilling, thereby achieving the effect of saving working time and improving the efficiency of PCB board processing; When the grinding head 52 is grinding the drill bit 48, the metal dust produced by grinding will fall into the guide tube 53 along the grinding cavity in the grinding head 52, and then flow into the collection frame 5 on the workbench 1 along the guide tube 53, achieving the effect of automatic collection. In addition, a certain amount of water is placed in the collection frame 5 to prevent the metal dust from escaping and polluting the working environment. After the drilling of the PCB board is completed, the first guide rail 33 of the positioning plate 32 is started, so that the first guide rail 33 drives the first guide block 34 to slide along the first guide rail 33, thereby driving the fixed roller 36 on one side of the first guide block 34 to move. The movement of the fixed roller 36 can drive the adsorption cloth 37 on its circumferential surface to mechanically adhere to various debris particles on the surface of the PCB board, thereby achieving the effect of improving the processing quality of the PCB board. At the same time, in the process of the first guide block 34 driving the fixed roller 36 to move, the first gear 38 is fixedly connected to one end of the rotating shaft 35 close to the first guide block 34, and then when the first guide block 34 moves with the rotating shaft 35, the first gear 38 can drive the rotating shaft 35 to rotate along the movement of the rack plate 39, thereby driving the adsorption cloth 37 on the circumferential surface of the fixed roller 36 to better clean the surface of the PCB board, thereby improving the cleaning effect of the adsorption cloth 37.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A micro drill for processing PCB boards, Features: The invention comprises a workbench (1), wherein the upper surface of the workbench (1) is slidably connected to a fixed plate (2), the upper surface of the fixed plate (2) is slidably connected to a movable plate (21), the upper surface of the workbench (1) is fixedly connected to a second motor (4), the output end of the second motor (4) is fixedly connected to a connecting rod (41), one end of the connecting rod (41) is fixedly connected to a support frame (42), one side of the support frame (42) is slidably connected to a support plate (45), one side of the support plate (45) is fixedly connected to two limit plates (46), a dual-axis motor (47) is fixedly connected between the two limit plates (46), a drill bit (48) is estimated to be provided at the lower output end of the dual-axis motor (47), and a grinding piece is provided on the upper surface of the workbench (1), the grinding piece comprises a fourth motor (51) fixedly connected to the upper surface of the workbench (1); A grinding head (52) is fixedly connected to the output end of the fourth motor (51), wherein the cross section of the grinding head (52) is conical, and a grinding cavity is provided inside the grinding head (52).

2. A micro drill for processing a PCB board according to claim 1, Features: A guide tube (53) is fixedly connected to the bottom end of the grinding head (52), and a collection frame (5) is fixedly connected to a position of the workbench (1) corresponding to the guide tube (53). The collection frame (5) is annular and can collect metal debris produced by grinding.

3. A micro drill for processing a PCB board according to claim 1, Features: A rotating wheel (49) is fixedly connected to the upper output end of the dual-axis motor (47), and a first steel strip (410) is fixedly connected to the circumferential surface of the rotating wheel (49). A fixed frame (412) is fixedly connected to the side of the support plate (45) close to the dual-axis motor (47), and a reciprocating screw (413) is rotatably connected in the fixed frame (412). The top end of the reciprocating screw (413) is fixedly connected to the rotating wheel (49), and the first steel strip (410) is used for transmission between the two rotating wheels (49). A cooling component is arranged on the circumferential surface of the reciprocating screw (413), and the cooling component is used to cool the drill bit (48).

4. A micro drill for processing a PCB board according to claim 3, Features: The cooling member comprises an extrusion plate (414) slidably connected to the circumferential surface of the reciprocating screw (413); a nozzle (415) is fixedly connected to the lower surface of the fixed frame (412); the nozzle (415) is tilted and aligned with the drill bit (48); and a plurality of nozzles are provided at the bottom end of the nozzle (415).

5. A micro drill for processing a PCB board according to claim 3, Features: Two fixing holes (416) are provided on the upper surface of the fixing frame (412), and the two fixing holes (416) are used to balance the pressure inside the fixing frame (412).

6. A micro drill for processing a PCB board according to claim 1, Features: Positioning blocks (417) are fixedly connected to both sides of one of the limit plates (46), a telescopic rod (418) is fixedly connected to the lower surface of each of the positioning blocks (417), and a positioning plate (419) is fixedly connected to the bottom end of each of the telescopic rods (418).

7. A micro drill for processing a PCB board according to claim 3, Features: The top end of the reciprocating screw rod (413) is rotatably connected to a limiting block (411), and the limiting block (411) is fixedly connected to the support plate (45).

8. A micro drill for processing a PCB board according to claim 1, Features: A third motor (44) is fixedly connected to the upper surface of the support frame (42); an output shaft of the third motor (44) is provided with a reciprocating thread; a sliding block (43) is slidably connected to the circumferential surface of the output shaft of the third motor (44); a support plate (45) is fixedly connected to one side of the sliding block (43).

9. A micro drill for processing a PCB board according to claim 1, Features: A first motor (3) is fixedly connected to the upper surface of the workbench (1); a first screw rod (31) is fixedly connected to the output end of the first motor (3); the circumferential surface of the first screw rod (31) is a reciprocating thread; the circumferential surface of the first screw rod (31) is slidably connected to a moving plate (21); a positioning plate (32) is fixedly connected to one side of the first motor (3); a first guide rail (33) is provided on the upper surface of the positioning plate (32); a first guide block (34) is slidably connected inside the first guide rail (33); a rotating shaft (35) is rotatably connected to one side of the first guide block (34); a fixed roller (36) is fixedly connected to the circumferential surface of the rotating shaft (35); and an adsorption cloth (37) is fixedly connected to the circumferential surface of the fixed roller (36).

10. A micro drill for processing a PCB board according to claim 9, Features: A first gear (38) is fixedly connected to one end of the rotating shaft (35) close to the first guide block (34), and a rack plate (39) is meshed with the position of the positioning plate (32) corresponding to the first gear (38). The rotating shaft (35) can rotate along the rack plate (39) through the first gear (38).

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