Frame drilling and polishing device for electronic equipment production

Abstract

The invention relates to the technical field of drilling and polishing devices, and discloses a frame drilling and polishing device for electronic equipment production, which comprises a clamping table and a displacement table capable of performing three-axis movement relative to the clamping table, and further comprises an impact frame, and an eccentric impact system is mounted between the impact frame and the displacement table; the eccentric impact system drives the impact frame to synchronously reciprocate in the vertical direction and the horizontal direction, the reciprocating stroke and the reciprocating frequency of the impact frame periodically and cyclically change, a displacement sensor and a three-axis acceleration sensor are installed on the impact frame, a rotatable impact main shaft is installed on the impact frame, and a drilling frame is installed on the impact main shaft. By means of the unique transmission adjusting system, the relative distance between the main drill rod and the grinding rod and the relative distance between the main drill rod and the grinding rod can be synchronously changed, the main drill rod and the grinding rod can be driven to rotate, drilling, chambering and grinding procedures are integrated into a single machining cycle, the clamping frequency is reduced, positioning errors caused by multiple times of clamping are avoided, and the machining precision is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hole drilling and polishing devices, and more particularly to a frame hole drilling and polishing device for electronic equipment production. BACKGROUND

[0002] Electronic equipment refers to control equipment composed of integrated circuits, transistors, electronic tubes and other electronic components, which plays a role by applying electronic technology and software, including electronic computers and robots, numerical control or program control systems controlled by electronic computers, etc. The whole generally uses metal material as the shell and is protected. In order to facilitate subsequent installation, the metal frame is generally selected for punching treatment, and nuts can be used for subsequent fixing work. In the prior art, a frame hole drilling and polishing device for electronic equipment production is disclosed in patent document CN118106771B, which comprises a cylinder base, a motor is fixed on the top of the cylinder base, and further comprises a docking assembly, the docking assembly is drivingly connected to the output shaft of the motor, a reinforcing assembly is used for clamping the metal frame. The above device punches holes at the same time, and the metal burrs generated at the same time are polished by the punching assembly, which eliminates the manual polishing time and improves the working efficiency of the device. However, the above-mentioned hole drilling device has the following technical problems when in use: Although the existing device attempts to integrate hole drilling and polishing, it lacks a dynamic cooperation mechanism, resulting in low process switching efficiency, positioning errors caused by multiple clamping, affecting machining precision, and traditional single-axis impact systems are prone to cause hole wall cracking or oval deformation. The impact frequency and stroke are fixed and cannot be adapted to different materials. Continuous cutting causes long chips to wrap around the drill bit, which requires frequent stoppage for cleaning; Therefore, the present application provides a frame hole drilling and polishing device for electronic equipment production to solve the technical problems in the background art. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the present application provides a frame hole drilling and polishing device for electronic equipment production. The unique transmission adjustment system can simultaneously change the relative distance between the main drill rod and the polishing rod and the main drill rod and drive the rotation thereof, integrating hole drilling, hole expansion and polishing processes into a single machining cycle, reducing the number of clamping times, avoiding positioning errors caused by multiple clamping, and significantly improving machining precision.

[0004] To achieve the above object, the present application provides the following technical scheme: a frame drilling and polishing device for electronic equipment production, comprising a clamping table and a displacement table capable of three-axis movement relative to the clamping table, further comprising an impact frame, an eccentric impact system is installed between the impact frame and the displacement table, the eccentric impact system drives the impact frame to synchronously move reciprocatingly in the vertical direction and the horizontal direction, the reciprocating stroke and reciprocating frequency of the impact frame periodically change, a displacement sensor and a three-axis acceleration sensor are respectively installed on the impact frame, a rotatable impact spindle is installed on the impact frame, a drill frame is installed on the impact spindle, a main drill rod is installed on the impact spindle and corresponds to the position below the drill frame, four accommodating grooves are formed in the main drill rod, two sub drill rods are arranged in two of the accommodating grooves, and two polishing rods are arranged in the other two accommodating grooves, a spiral drill groove is formed in the sub drill rod, a transmission adjustment system is arranged on the drill frame, the transmission adjustment system is used for synchronously changing the relative distance between the main drill rod and the polishing rod and the main drill rod and driving the sub drill rod and the polishing rod to rotate, a water cooling channel is arranged in the impact spindle, a group of horizontally arranged first spray holes are formed in each accommodating groove, a plurality of groups of second spray holes are formed in the main drill rod, the second spray holes are upwardly inclined and the included angle between the second spray holes and the horizontal plane is 45° to 60°, and the first spray holes and the second spray holes are in communication with the water cooling channel.

[0005] As a preferred technical scheme of the present application, a rack is further included, the rack is respectively provided with an axial driving module and a longitudinal driving module, the axial driving module is in transmission connection with the clamping table, the longitudinal driving module is provided with a longitudinal displacement frame in transmission, a radial driving module is installed in the longitudinal displacement frame, the radial driving module is in transmission connection with the displacement table, a microcontroller is installed on the rack, and the data terminals of the displacement sensor and the three-axis acceleration sensor are in data connection with the microcontroller.

[0006] As a preferred technical scheme of the present application, the eccentric impact system comprises an eccentric frame, a motor mounted on a displacement table, an intermittent shaft rotatably connected to the displacement table, eccentric screws and a fixed shaft, the output shaft of the motor is respectively provided with a first intermittent sector gear and a second intermittent sector gear, two symmetrically arranged transmission intermittent zones are arranged on the output shaft of the motor and correspond to the positions between the first intermittent sector gear and the second intermittent sector gear, the intermittent shaft is respectively provided with a first frequency conversion gear in transmission connection with the first intermittent sector gear and a second frequency conversion gear in transmission connection with the second intermittent sector gear, the intermittent shaft and the fixed shaft are both provided with first bevel gears, the two first bevel gears are in meshing with each other, the fixed shaft is provided with a first transmission toothed belt in transmission connection with the two eccentric screws, the eccentric frame is rotatably provided with a movable shaft, two impact screws and an impact sleeve shaft, the movable shaft is driven by the fixed shaft, the movable shaft and the impact sleeve shaft are both provided with second bevel gears, the two second bevel gears are in meshing with each other, the impact sleeve shaft is provided with a second transmission toothed belt in transmission connection with the two impact screws, the two impact screws are driven by the second transmission toothed belt, the impact screws are in transmission connection with the impact frame, the impact main shaft is rotatably provided on the impact frame and is driven by the impact sleeve shaft, the rotating connection positions of the eccentric screws and the displacement table, the impact screws and the eccentric frame and the impact main shaft and the impact frame are all provided with energy storage torsional springs.

[0007] As a preferred technical scheme of the present application, the central angle corresponding to the toothed part on the first intermittent sector gear is 200°, the central angle corresponding to the toothed part on the second intermittent sector gear is 100°, the central angle corresponding to the transmission intermittent zone is 60°, the first intermittent sector gear is 8 to 11 times of the first frequency conversion gear, and the second intermittent sector gear is 2 to 3.5 times of the second frequency conversion gear.

[0008] As a preferred technical scheme of the present application, the inside of the movable shaft is fixedly provided with a first shaft connection groove with a tail end opening and in sliding connection with the fixed shaft, the impact main shaft is fixedly provided with a shaft connection section, the inside of the impact sleeve shaft is fixedly provided with a second shaft connection groove with a bottom end opening and in sliding connection with the shaft connection section, the cross sections of the first shaft connection groove, the second shaft connection groove, the fixed shaft and the shaft connection section are all regular hexagons.

[0009] As a preferred technical scheme of the present application, the transmission adjusting system comprises an adjusting frame, four guide members and a linear transmission module installed on the impact frame, the linear transmission module is in transmission connection with the adjusting frame, the inner wall of the adjusting frame is rotationally connected with a driven rotary ring, a hollow shaft is rotationally sleeved on the impact main shaft, the hollow shaft is coaxially and reversely linked with the impact main shaft, a transmission bevel gear ring is installed at the bottom of the hollow shaft, each guide member comprises a transmission shaft rotationally connected with the drill frame, a sliding table slidingly connected with the drill frame, a tooth sleeve rotationally connected with the sliding table, a belt wheel shaft and a positioning shaft, a connecting rod is hinged between the sliding table and the driven rotary ring, a driven bevel gear in transmission connection with the transmission bevel gear ring is fixedly installed at the tail end of the transmission shaft, the positioning shaft, the belt wheel shaft and the tooth sleeve are all driven by the transmission shaft, and two sub drill rods and two polishing rods are installed on the positioning shafts at corresponding positions.

[0010] As a preferred technical scheme of the present application, the inside of the tooth sleeve is fixedly provided with a through groove with two open ends and in sliding connection with the transmission shaft, the cross sections of the through groove and the transmission shaft are both regular polygons, a third bevel gear is installed on the tooth sleeve and the belt wheel shaft, the two third bevel gears are in meshing with each other, and a third transmission tooth belt is in transmission connection between the belt wheel shaft and the positioning shaft.

[0011] As a preferred technical scheme of the present application, a reverse transmission shaft is rotationally installed on the impact frame, a reverse bevel gear is installed on the reverse transmission shaft, a fourth bevel gear is installed on the impact main shaft and the hollow shaft, the two fourth bevel gears are both in transmission connection with the reverse bevel gear, and the two fourth bevel gears are respectively arranged on the two sides of the reverse bevel gear.

[0012] As a preferred technical scheme of the present application, a liquid inlet ring is rotationally sleeved on the impact main shaft, the inner cavity of the liquid inlet ring is in rotational communication with the water cooling flow channel, and a liquid inlet connector is communicated on the liquid inlet ring.

[0013] As a preferred technical scheme of the present application, the bottom end of the main drill rod is a conical tip structure, the radius of the polishing rod is the same as that of the sub drill rod, and the radius of the main drill rod is 1.1 to 1.3 times the diameter of the polishing rod.

[0014] Compared with the prior art, the present application has the following advantages: 1、The unique transmission adjustment system can synchronously change the relative distance between the main drill rod and the polishing rod and the main drill rod and drive the rotation thereof, integrates the drilling, hole expanding and polishing processes into a single machining cycle, reduces the clamping times, avoids the positioning errors caused by multiple clamping, significantly improves the machining precision, meanwhile, the processes are closely matched, and the overall machining efficiency is greatly improved, the eccentric impact system drives the impact frame to synchronously generate vertical and horizontal compound reciprocating motion, real-time monitoring is realized in combination with the displacement sensor and the three-axis acceleration sensor, the impact stroke, frequency and frequency conversion gear ratio are dynamically adjusted by the microcontroller, the positioning error problem of the traditional device is solved, compared with the single-axis fixed impact mode in the prior art, the drilling and polishing processes are seamlessly connected through the periodic compound motion, the roundness error is reduced, the positioning precision is improved, and the device is especially suitable for high-precision machining of special-shaped holes and thin-wall frames, and is significantly superior to the single-process independent operation mode in the prior art.

[0015] 2、The eccentric screw, the energy storage torsional spring and the frequency conversion gear set cooperate to realize periodic self-adaptive adjustment of the impact frequency and stroke, the device cyclically adopts a low-frequency large-torque impact mode and a high-frequency small-amplitude vibration mode during drilling and polishing, and problems such as hole wall cracking and oval deformation caused by the traditional single-axis impact system are avoided.

[0016] 3、The linear transmission module and the guide member are linked to realize real-time adjustment of the distance between the auxiliary drill rod, the polishing rod and the main drill rod, adapt to the machining of multiple-aperture drilling, and the reverse linkage design of the hollow shaft and the impact spindle can drive multiple tools to work cooperatively by using only a single power source, and the energy consumption is reduced compared with the traditional multiple-motor control scheme.

[0017] The unique water-cooling flow channel cooperates with the horizontal first spray hole and the second spray hole inclined by 50° to form a three-dimensional cooling network, the cooling liquid reaches the drill tip during drilling, and covers the hole wall during polishing, the debris removal efficiency is effectively improved in cooperation of the auxiliary drill rod helical groove and the centrifugal force of the spray hole, the periodic reversal driven by the energy storage torsional spring makes the main drill rod instantaneously rotate in the opposite direction, realizes chip breaking and stress balance, and the continuous machining time is prolonged to 8 hours without shutdown for cleaning, and the efficiency is effectively improved compared with the prior art, and the long chip winding around the drill and the thermal deformation problem are solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of a frame drilling and polishing device for electronic equipment production; Figure 2 It is a structural schematic view of a motor and an impact frame; Figure 3 It is a structural schematic view of a frame drilling and polishing device for electronic equipment production; Figure 2 It is a partial enlarged structural schematic view of A in the frame drilling and polishing device for electronic equipment production; Figure 4Schematic diagram of the structure of the triaxial acceleration sensor and the impact frame of the present invention; Figure 5 This is a schematic structural diagram of the impact spindle and drill frame of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the cross-section structure; Figure 7 For the present invention Figure 6 Schematic diagram of the local enlarged structure at B in the middle; Figure 8 For the present invention Figure 6 Schematic diagram of the local enlarged structure at C in the middle; Figure 9 This is a schematic structural diagram of the reverse transmission shaft and the drill frame of the present invention; Figure 10 It is a schematic structural diagram of the intermittent shaft and the second intermittent fan gear of the present invention.

[0019] In the figure: 1. Clamping table; 2. Displacement table; 3. Impact frame; 4. Displacement sensor; 5. Three-axis acceleration sensor; 6. Impact spindle; 7. Drill frame; 8. Main drill rod; 9. Receptacle; 10. Auxiliary drill rod; 11. Grinding rod; 12. Water cooling channel; 13. First spray hole; 14. Second spray hole; 15. Stand; 16. Eccentric frame; 17. Motor; 18. Intermittent shaft; 19. Eccentric screw; 20. Leveling shaft; 21. First intermittent sector gear; 22. Second intermittent sector gear 1. Intermittent fan gear; 23. First frequency-changing gear; 24. Second frequency-changing gear; 25. Moving horizontal shaft; 26. Impact screw; 27. Energy storage torsion spring; 28. Adjusting frame; 29. ​​Linear transmission module; 30. Driven swivel; 31. Hollow shaft; 32. Transmission bevel gear ring; 33. Transmission shaft; 34. Slide; 35. Gear sleeve; 36. Pulley shaft; 37. Positioning shaft; 38. Connecting rod; 39. Counter-transmission shaft; 40. Liquid inlet ring; 41. Microcontroller; 42. Impact sleeve shaft. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figures 1 to 10 As shown, the present invention provides a device for drilling and polishing frames for electronic equipment production, comprising a clamping table 1 for placing the frames for electronic equipment production and a translation table 2 capable of three-axis movement relative to the clamping table 1; A fixture for clamping the frame of electronic equipment production is placed on the clamping table 1; The gantry 15 is provided with an axial driving module and a longitudinal driving module, respectively, the axial driving module is in transmission connection with the clamping table 1, the longitudinal driving module is provided with a longitudinal moving frame in transmission, the radial driving module is installed in the longitudinal moving frame, and the radial driving module is in transmission connection with the displacement table 2; In the production process of the electronic device frame, the axial driving module drives the clamping table 1 to move axially, the longitudinal driving module drives the longitudinal moving frame to move longitudinally, and the radial driving module drives the displacement table 2 to move radially, and the three-axis movement of the displacement table 2 relative to the clamping table 1 is realized through the synergistic effect of the three, the three-axis movement mode can accurately adjust the position of the displacement table 2, and the subsequent working components installed on the displacement table 2 can accurately reach the machining position of the electronic device frame, compared with the traditional fixed-position machining equipment, the machining flexibility of the equipment is greatly improved, the drilling and polishing requirements of electronic device frames of different sizes and shapes can be met, the problem that the machining range of the traditional equipment is limited is solved, and the production efficiency and machining precision are effectively improved; The eccentric impact system is installed between the impact frame 3 and the displacement table 2, the eccentric impact system drives the impact frame 3 to synchronously move reciprocatingly in the vertical direction and the horizontal direction, the reciprocating stroke and the reciprocating frequency of the impact frame 3 are periodically changed, and the displacement sensor 4 and the three-axis acceleration sensor 5 are respectively installed on the impact frame 3; The impact frame 3 is provided with a rotatable impact main shaft 6, and the drill frame 7 is installed on the impact main shaft 6; The microcontroller 41 is installed on the gantry 15, and the data terminals of the displacement sensor 4 and the three-axis acceleration sensor 5 are in data connection with the microcontroller 41; The motor 17 in the eccentric impact system drives the first intermittent fan gear 21 and the second intermittent fan gear 22 to rotate, drives the impact frame 3 to move reciprocatingly in the vertical direction and the horizontal direction through transmission intermittent zones, frequency conversion gears, bevel gears, transmission toothed belts and screw rods, and the reciprocating stroke and the frequency are periodically changed, the displacement sensor 4 and the three-axis acceleration sensor 5 monitor the movement state of the impact frame 3 in real time, and data is fed back to the microcontroller 41, and the microcontroller 41 controls the roundness of the formed hole according to the data; The movement precision of the clamping table 1 and the displacement table 2 is controlled through the three-axis driving module on the gantry 15 and the microcontroller 41, three-dimensional positioning of the electronic device frame is realized, the impact frame 3 is driven by the eccentric impact system, synchronous vertical and horizontal reciprocating motion is generated, the periodically changed stroke and frequency are monitored in real time through the displacement sensor 4 and the three-axis acceleration sensor 5, and the motor 17 rotating speed and the frequency conversion gear ratio are dynamically adjusted by the microcontroller 41, so that the hole wall cracking or oval deformation problem caused by the traditional single-axis impact is solved; The eccentric impact system comprises an eccentric frame 16, a motor 17 installed on the displacement table 2, an intermittent shaft 18 rotationally connected to the displacement table 2, an eccentric screw 19 and a fixed shaft 20; The output shaft of the motor 17 is respectively provided with a first intermittent fan gear 21 and a second intermittent fan gear 22, and two symmetrically arranged transmission intermittent zones are arranged on the output shaft of the motor 17 and correspond to the positions between the first intermittent fan gear 21 and the second intermittent fan gear 22; the intermittent shaft 18 is respectively provided with a first frequency conversion gear 23 in transmission connection with the first intermittent fan gear 21 and a second frequency conversion gear 24 in transmission connection with the second intermittent fan gear 22; The central angle corresponding to the tooth part on the first intermittent fan gear 21 is 200°, the central angle corresponding to the tooth part on the second intermittent fan gear 22 is 100°, the central angle corresponding to the transmission intermittent zone is 60°, the first intermittent fan gear 21 is 10 times of the first frequency conversion gear 23, and the second intermittent fan gear 22 is 2 times of the second frequency conversion gear 24; When the first intermittent fan gear 21 is engaged with the first frequency conversion gear 23, the high-speed rotation of the motor 17 is converted into low-frequency large-torque output, the main drill rod 8 is driven to perform high-impact force drilling at a low frequency, the rapid penetration requirement of the aluminum alloy frame is adapted, the polishing rod 11 is driven to be high-speed trimmed, when the second intermittent fan gear 22 is engaged with the second frequency conversion gear 24, the rotation speed of the motor 17 is reduced by a small ratio and then high-frequency low-amplitude vibration is output, the polishing rod 11 is driven to be trimmed with high-frequency small-amplitude vibration, the surface finish is improved, the transmission intermittent zone is in the intermittent period of the switching of the two fan gears, the power is temporarily interrupted, the impact frame 3 is reset and the elastic potential energy of the energy storage torsional spring 27 is buffered, and the tool overheating or material fatigue caused by continuous impact is avoided; The first intermittent fan gear 21 covers most of the angle of the rotation period of the motor 17, ensures the continuity of the power output in the drilling stage, avoids the torque fluctuation caused by frequent switching, the second intermittent fan gear 22 is engaged for a short time at a high frequency, adapts to the requirement of the polishing stage on the short period and high response speed, reduces the invalid stroke, the 60° transmission intermittent zone is used as the switching buffer zone of the first intermittent fan gear 21 and the second intermittent fan gear 22, the power is smoothly transferred through the toothless interval, gear collision or impact superposition is prevented, and parameter adjustment time is left for the microcontroller 41.

[0022] The 10 times reduction ratio of the first intermittent fan gear 21 and the first frequency conversion gear 23, if the ratio is reduced, the drilling impact force is insufficient, if the ratio is increased, the impact frequency is too low, and the processing efficiency is reduced, and the 2 times reduction ratio of the second fan gear and the frequency conversion gear: If the ratio is increased, the polishing frequency will exceed the bearing range of the material; If the ratio is reduced, effective vibration polishing cannot be formed, the angle matching of the central angle and the intermittent zone: If the interval of the 200° fan gear and the 100° fan gear is not asymmetric, the time length differentiation control of the drilling and polishing stages cannot be realized, and if the angle of the transmission intermittent zone deviates from 60°, the power switching will be delayed or the impact action will not be coherent.

[0023] The design realizes the dynamic parameter separation of the drilling and polishing stages through the precise matching of the 200° / 100° central angle gear and the 60° intermittent area, combined with the 10:1 and 2:1 frequency conversion ratios: In the processing of the electronic device frame, such precise motion control can make the drilling and polishing process more stable and efficient. For example, during drilling, the periodically changing impact force helps the drill bit cut into the frame material better, reducing drill bit wear; During polishing, the polishing rod 11 can act more uniformly on the frame surface, effectively improving the stability of the processing and the service life of the parts, and reducing production costs compared to impact systems with unreasonable parameters; The first bevel gears are installed on the intermittent shaft 18 and the constant shaft 20, the two first bevel gears are meshed with each other, and the first transmission tooth belt is drivingly installed on the constant shaft 20, the two eccentric screws 19 are drivingly connected with the first transmission tooth belt, and the two eccentric screws 19 are drivingly connected with the eccentric frame 16; The dynamic shaft 25, the two impact screws 26 and the impact sleeve shaft 42 are rotatably installed on the eccentric frame 16, and the dynamic shaft 25 is driven by the constant shaft 20; The first coupling groove with a tail end opening and slidingly connected with the constant shaft 20 is fixed in the inside of the dynamic shaft 25; The second bevel gears are installed on the dynamic shaft 25 and the impact sleeve shaft 42, the two second bevel gears are meshed with each other, the second transmission tooth belt is drivingly installed on the impact sleeve shaft 42, the two impact screws 26 are driven by the second transmission tooth belt, and the two impact screws 26 are drivingly connected with the impact frame 3; The impact main shaft 6 is rotatably installed on the impact frame 3, and the impact main shaft 6 is driven by the impact sleeve shaft 42; The coupling section is fixedly arranged on the impact main shaft 6, the second coupling groove with a bottom end opening and slidingly connected with the coupling section is fixedly arranged in the inside of the impact sleeve shaft 42, and the cross sections of the first coupling groove, the second coupling groove, the constant shaft 20 and the coupling section are all regular hexagons; The energy storage torsional spring 27 is arranged at the rotating connection between the eccentric screw 19 and the displacement table 2, the rotating connection between the impact screw 26 and the eccentric frame 16, and the rotating connection between the impact main shaft 6 and the impact frame 3; The bottom end of the main drill rod 8 is a conical tip structure, the radius of the polishing rod 11 is the same as the radius of the auxiliary drill rod 10, and the radius of the main drill rod 8 is 1.2 times the diameter of the polishing rod 11; The first joint shaft groove of the moving shaft 25, the joint section of the impact main shaft 6, the second joint shaft groove of the impact sleeve shaft 42 and the fixed shaft 20 are all hexagonal structures, which ensures the stability and accuracy of power transmission, enables the components to be closely matched during movement, effectively avoids the slipping phenomenon during relative rotation, ensures the movement accuracy of the impact frame 3, the impact main shaft 6 and other components, the energy storage torsion spring 27 at the rotating connection of the eccentric screw 19, the impact screw 26 and the impact main shaft 6 stores and releases energy during the movement of the equipment; The main drill rod 8 is installed on the impact main shaft 6 and corresponds to the position below the drill frame 7. Four accommodating grooves 9 are formed in the main drill rod 8. Two of the accommodating grooves 9 are provided with a secondary drill rod 10, and the other two accommodating grooves 9 are provided with a polishing rod 11. A spiral drill groove is formed in the secondary drill rod 10. The drill frame 7 is provided with a transmission adjustment system for synchronously changing the relative distance between the main drill rod 8 and the polishing rod 11 and the main drill rod 8 and driving the secondary drill rod 10 and the polishing rod 11 to rotate. The impact main shaft 6 is provided with a water cooling flow channel 12. A group of horizontally arranged first spray holes 13 are formed in each of the accommodating grooves 9. A plurality of second spray holes 14 are formed in the main drill rod 8. The second spray holes 14 are upwardly inclined and the included angle between the second spray holes 14 and the horizontal plane is 45° to 60°. The first spray holes 13 and the second spray holes 14 are in communication with the water cooling flow channel 12. The impact main shaft 6 is rotatably sleeved with a liquid inlet ring 40. The inner cavity of the liquid inlet ring 40 is in rotating communication with the water cooling flow channel 12. The liquid inlet ring 40 is connected with a liquid inlet connector.

[0024] The conical tip structure at the bottom end of the main drill rod 8 facilitates rapid positioning and cutting into the frame of the electronic equipment, improves the drilling efficiency, the spiral drill groove on the secondary drill rod 10 facilitates chip removal, ensures smooth drilling, the polishing rod 11 has the same radius as the secondary drill rod 10, and the radius of the main drill rod 8 is 1.2 times the diameter of the polishing rod 11. This size design enables the drilling and polishing processes to better connect, the water cooling flow channel 12 in the impact main shaft 6 cooperates with the first spray holes 13 and the second spray holes 14 to cool the main drill rod 8, the secondary drill rod 10 and the polishing rod 11 during processing, reduces the temperature of the processed components and the frame material, prevents material deformation or damage due to overheating, and also removes the chips generated during processing. Compared with equipment without a cooling system or with poor cooling effect, the processing quality is effectively improved, material quality problems caused by heat are avoided, and the accuracy and performance of the frame of the electronic equipment are ensured. When the first intermittent fan gear 21 and the second intermittent fan gear 22 driven by the motor 17 enter the transmission intermittent area, the power input is temporarily interrupted, the energy storage torsion spring 27 releases the pre-stored elastic potential energy, and the following components are driven to rotate in reverse: The impact screw 26 and the eccentric screw 19: reverse to the initial angle to eliminate the vibration deviation caused by inertia; The main drill rod 8 and the secondary drill rod 10: temporarily reverse to achieve chip breaking and avoid long chips winding the drill bit; Polishing rod 11: reverse rotation balance one-way polishing texture directionality.

[0025] During the reverse process, the second jet hole 14 of the main drill rod 8 accelerates the cooling liquid to the hole bottom by means of the reverse centrifugal force, and the efficiency of the debris discharge is improved, while the spiral drill groove of the auxiliary drill rod 10 reversely rotates the residual debris to prevent the hole from being blocked.

[0026] The main drill rod 8 cuts into the material with positive rotation high torque, and the auxiliary drill rod 10 synchronously expands the hole. The instantaneous reverse driven by the energy storage torsional spring 27 breaks the cutting chips of the main drill rod 8 and the auxiliary drill rod 10, reduces the friction temperature rise caused by continuous cutting, and avoids the deformation of aluminum alloy and other materials due to overheating.

[0027] The polishing rod 11 removes the burr on the hole wall in positive rotation, and the polishing rod 11 reverses to offset the stress concentration of one-way polishing, so that the hole wall texture presents a cross network, which is especially suitable for mirror surface requirements of magnesium alloy frame. The contact surface of the polishing rod 11 switches when it is reversed, reducing the adhesion of abrasive particles and prolonging the tool life Through positive and negative rotation alternation, the drilling roundness error is reduced, the polishing surface consistency is improved, the debris is discharged in real time to extend the continuous processing time, the buffer effect of the energy storage torsional spring 27 reduces the gear impact wear rate, and the reverse period is strictly synchronized with the 60° central angle of the transmission intermittent area. If the reverse is cancelled or the intermittent angle is adjusted, the chips will not be broken completely or the cooling liquid will not be evenly covered, which will directly affect the batch qualification rate of the electronic device frame.

[0028] The design solves the problems of chip breaking, heat dissipation and surface quality in high-precision drilling and polishing through precise reset and periodic rotational reverse of the energy storage torsional spring 27, and provides an irreplaceable solution for the machining of thin-walled structures of electronic equipment.

[0029] The transmission adjustment system comprises an adjustment frame 28, four guide members, and a linear transmission module 29 mounted on the impact frame 3. The linear transmission module 29 is in transmission connection with the adjustment frame 28. The inner wall of the adjustment frame 28 is rotationally connected with a driven rotary ring 30. A hollow shaft 31 is rotationally arranged on the impact spindle 6. The hollow shaft 31 is coaxially and reversely linked with the impact spindle 6. A reverse transmission shaft 39 is rotationally mounted on the impact frame 3. A reverse bevel gear is mounted on the reverse transmission shaft 39. A fourth bevel gear is mounted on the impact spindle 6 and the hollow shaft 31. The two fourth bevel gears are in transmission connection with the reverse bevel gear. The two fourth bevel gears are arranged on the two sides of the reverse bevel gear, respectively. The bottom of the hollow shaft 31 is provided with a transmission bevel gear 32. Each guide member comprises a transmission shaft 33 rotatably connected to the drill frame 7, a sliding table 34 slidably connected to the drill frame 7, a gear sleeve 35 rotatably connected to the sliding table 34, a pulley shaft 36 and a positioning shaft 37, and a connecting rod 38 is hingedly connected between the sliding table 34 and the driven rotary ring 30, and a driven bevel gear is fixedly installed at the tail end of the transmission shaft 33 and is in transmission connection with the driving bevel gear 32. The positioning shaft 37, the pulley shaft 36 and the gear sleeve 35 are all driven by the transmission shaft 33, and the two auxiliary drill rods 10 and the two polishing rods 11 are both installed on a corresponding positioning shaft 37.

[0030] The inside of the gear sleeve 35 is fixedly provided with a through groove with two open ends and in sliding connection with the transmission shaft 33, the cross sections of the through groove and the transmission shaft 33 are both regular polygons, third bevel gears are installed on the gear sleeve 35 and the pulley shaft 36, the two third bevel gears are in meshing with each other, and a third transmission tooth belt is in transmission connection between the pulley shaft 36 and the positioning shaft 37.

[0031] The linear transmission module 29 drives the adjusting frame 28 to move, the driven rotary ring 30 on the adjusting frame 28 drives the sliding table 34 of the guide member to slide through the connecting rod 38, so as to adjust the relative distance between the auxiliary drill rod 10 and the polishing rod 11 and the main drill rod 8, the hollow shaft 31 is coaxially and reversely linked with the impact main shaft 6, the transmission bevel gear 32 at the bottom of the hollow shaft 31 drives the transmission shaft 33 to rotate through the driven bevel gear, the gear sleeve 35, the pulley shaft 36 and the positioning shaft 37 work cooperatively to drive the auxiliary drill rod 10 and the polishing rod 11 to rotate, when the electronic device frame is drilled and polished, this transmission and adjustment system can adjust the position and rotating speed of the auxiliary drill rod 10 and the polishing rod 11 in real time according to the processing requirements, realizes the requirements of different hole diameters and different roughnesses, compared with the traditional processing equipment with fixed distance and rotating speed, the universality and processing precision of the equipment are improved, the diversified processing requirements of the electronic device frame are met, and the product competitiveness is enhanced; For the arc-shaped or special-shaped hole of the electronic device frame, the system adjusts the distance between the polishing rod 11 and the main drill rod 8 through the sliding table 34, expands the hole through the spiral drill groove of the auxiliary drill rod 10, ensures that the hole wall shape is consistent with the design tolerance, adjusts the distance and the rotation speed to adapt to different materials, and the electronic device frame is mostly thin-walled. The traditional device is prone to deformation due to uneven cutting force, and the system effectively reduces the machining deformation rate through synchronous adjustment of the distance and low-vibration rotation, and perfectly meets the high-precision requirements of frame machining. For the dense heat dissipation holes of the intelligent device frame, the system integrates the processes of pre-positioning of the main drill rod 8, hole expansion of the auxiliary drill rod 10 and fine finishing of the polishing rod 11, effectively improves the machining efficiency, and is consistent with the functional positioning of the "drilling and polishing device". The traditional device mostly uses independent motors 17 to drive each tool, while the technical scheme realizes integrated control of "adjustment" and "driving" through a single power source combined with linkage structures such as transmission bevel gear 32 and driven rotating ring 30. The mechanical linkage of the driving member replaces manual intervention, integrates the processes of drilling, hole expansion and polishing into a single machining cycle, reduces the clamping frequency, and fully matches the high-efficiency automation demand emphasized by electronic device production.

[0032] The first spray hole 13 directly sprays the cooling liquid horizontally to the contact surface of the main drill rod 8 and the frame, forming a basic cooling layer, rapidly reducing the temperature of the drill bit tip to prevent aluminum alloy, magnesium alloy and other materials from softening and deforming due to local overheating. The cooling liquid sprayed by the second spray hole 14 spirally rises along the hole wall, covers the middle and rear sections of the hole, and at the same time carries the debris out of the hole by centrifugal force, improving the debris discharge efficiency and avoiding hole wall scratches or drill bit jamming caused by debris accumulation.

[0033] For the thin-walled characteristics of the electronic device frame, the inclination angle of the second spray hole 14 accurately matches the drilling depth, and the cooling liquid directly reaches the bottom of the hole through the inclined flow channel, reducing the thermal stress concentration area and reducing the hole wall thermal deformation. During the polishing stage, the second spray hole 14 continuously sprays cooling liquid to the contact surface of the polishing rod 11 and the hole wall, reducing the friction temperature rise and avoiding discoloration of the plastic frame or oxidation of the metal frame caused by high temperature, The working principle and use process of the present application are as follows: After the electronic device frame is fixed by the clamping table 1, the three-axis drive module on the gantry 15 cooperates with the displacement table 2 to complete three-dimensional positioning; The eccentric impact system on the displacement table 2 drives the first intermittent fan gear 21 and the second intermittent fan gear 22 by the motor 17, and transmits power through the frequency conversion gear set, bevel gear and transmission tooth belt to drive the impact frame 3 to produce vertical and horizontal compound reciprocating motion synchronously, the reciprocating stroke and frequency are periodically switched through the transmission intermittent area, the main drill rod 8 is positioned at the drill hole with the pointed end under the driving of the impact spindle 6, the auxiliary drill rod 10 is expanded through the spiral drill groove synchronously, the polishing rod 11 polishes the hole wall, the transmission adjustment system drives the sliding table 34 to move through the linear transmission module 29, synchronously adjusts the distance between the auxiliary drill rod 10 and the polishing rod 11 and the main drill rod 8, and drives the tool to rotate through the hollow shaft 31 in reverse linkage; The water-cooled flow channel 12 cools and discharges the machining area through the first spray hole 13 and the second spray hole 14, and the energy storage torsional spring 27 drives the main drill rod 8 and the polishing rod 11 to be temporarily reversed during the transmission intermittent period to achieve chip breaking and stress balance; The displacement sensor 4 and the three-axis acceleration sensor 5 monitor the motion state in real time, the microcontroller 41 dynamically adjusts the motor 17 speed and the frequency conversion gear ratio, and finally completes the high-precision drilling and polishing integrated machining.

[0034] It should be noted that, in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0035] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for drilling and polishing frames for electronic equipment production, comprising a clamping table (1) and a displacement table (2) capable of three-axis movement relative to the clamping table (1), characterized in that: The invention also includes an impact frame (3), an eccentric impact system is installed between the impact frame (3) and the displacement platform (2), the eccentric impact system drives the impact frame (3) to synchronously reciprocate in the vertical direction and the horizontal direction, the reciprocating stroke and reciprocating frequency of the impact frame (3) change periodically, a displacement sensor (4) and a three-axis acceleration sensor (5) are respectively installed on the impact frame (3), a rotatable impact spindle (6) is installed on the impact spindle (6), a drill frame (7) is installed on the impact spindle (6), a main drill rod (8) is installed on the impact spindle (6) and at a position corresponding to the bottom of the drill frame (7), and four accommodating grooves (9) are opened on the main drill rod (8), two of which are provided with auxiliary drill rods (10), and the other two accommodating grooves (9) are provided with auxiliary drill rods (10). A grinding rod (11) is provided inside the drill rod (10), a spiral drill groove is provided on the auxiliary drill rod (10), and a transmission adjustment system is provided on the drill frame (7). The transmission adjustment system is used to synchronously change the relative spacing between the main drill rod (8) and the grinding rod (11) and the main drill rod (8) and drive the auxiliary drill rod (10) and the grinding rod (11) to rotate. A water cooling channel (12) is provided in the impact spindle (6), and each of the troughs (9) is provided with a group of horizontally arranged first spray holes (13). The main drill rod (8) is provided with multiple groups of second spray holes (14), the second spray holes (14) are arranged to be inclined upward, and the angle between the second spray holes (14) and the horizontal plane is 45° to 60°. The first spray holes (13) and the second spray holes (14) are both connected to the water cooling channel (12).

2. The device for drilling and polishing frames for electronic equipment production according to claim 1, characterized in that: The apparatus further comprises a stand (15), wherein an axial drive module and a longitudinal drive module are respectively installed on the stand (15), wherein the axial drive module is in transmission connection with the clamping table (1), wherein a longitudinal movement frame is transmission-installed on the longitudinal drive module, wherein a radial drive module is installed in the longitudinal movement frame, wherein the radial drive module is in transmission connection with the displacement table (2), wherein a microcontroller (41) is installed on the stand (15), and data terminals of the displacement sensor (4) and the three-axis acceleration sensor (5) are both in data connection with the microcontroller (41).

3. The device for drilling and polishing frames for electronic equipment production according to claim 1, characterized in that: The eccentric impact system comprises an eccentric frame (16), a motor (17) mounted on the displacement platform (2), an intermittent shaft (18) rotatably connected to the displacement platform (2), an eccentric screw (19) and a leveling shaft (20), wherein a first intermittent fan gear (21) and a second intermittent fan gear (22) are respectively mounted on the output shaft of the motor (17), two symmetrically arranged transmission intermittent zones are provided on the output shaft of the motor (17) and corresponding to positions between the first intermittent fan gear (21) and the second intermittent fan gear (22), a first frequency-changing gear (23) connected to the first intermittent fan gear (21) and a second frequency-changing gear (24) connected to the second intermittent fan gear (22) are respectively mounted on the intermittent shaft (18), a first bevel gear is mounted on both the intermittent shaft (18) and the leveling shaft (20), and the two first bevel gears are meshed with each other, a first transmission toothed belt is installed on the leveling shaft (20), and the two eccentric screws (19) are both driven by the first transmission toothed belt. The two eccentric screws (19) are connected to the eccentric frame (16) in a transmission manner. The eccentric frame (16) is respectively rotatably mounted with a movable horizontal shaft (25), two impact screws (26) and an impact sleeve shaft (42). The movable horizontal shaft (25) is driven by a fixed horizontal shaft (20). The movable horizontal shaft (25) and the impact sleeve shaft (42) are both mounted with a second bevel gear. The two second bevel gears are meshed with each other. The impact sleeve shaft (42) is driven with a second transmission toothed belt. The two impact The screws (26) are driven by a second transmission toothed belt, the two impact screws (26) are both transmission-connected to the impact frame (3), the impact spindle (6) is rotatably mounted on the impact frame (3), the impact spindle (6) is driven by an impact sleeve (42), and energy storage torsion springs (27) are provided at the rotational connection between the eccentric screw (19) and the displacement table (2), the rotational connection between the impact screw (26) and the eccentric frame (16), and the rotational connection between the impact spindle (6) and the impact frame (3).

4. The device for drilling and polishing frames for electronic equipment production according to claim 3, characterized in that: The center angle corresponding to the teeth on the first intermittent sector gear (21) is 200°, the center angle corresponding to the teeth on the second intermittent sector gear (22) is 100°, the center angle corresponding to the transmission intermittent zone is 60°, the first intermittent sector gear (21) is 8 to 11 times the length of the first frequency-changing gear (23), and the second intermittent sector gear (22) is 2 to 3.5 times the length of the second frequency-changing gear (24).

5. The device for drilling and polishing frames for electronic equipment production according to claim 3, characterized in that: The movable horizontal shaft (25) is fixedly provided with a first coupling groove with a tail end opening and slidably connected to the horizontal shaft (20), the impact main shaft (6) is fixedly provided with a coupling section, the impact sleeve shaft (42) is fixedly provided with a second coupling groove with a bottom end opening and slidably connected to the coupling section, and the cross sections of the first coupling groove, the second coupling groove, the horizontal shaft (20) and the coupling section are all regular hexagons.

6. The device for drilling and polishing frames for electronic equipment production according to claim 1, characterized in that: The transmission adjustment system includes an adjustment frame (28), four guide members and a linear transmission module (29) installed on the impact frame (3), the linear transmission module (29) is connected to the adjustment frame (28) in a transmission manner, the inner wall of the adjustment frame (28) is rotatably connected to a driven swivel (30), a hollow shaft (31) is rotatably sleeved on the impact spindle (6), the hollow shaft (31) and the impact spindle (6) are coaxially and reversely linked, a transmission bevel gear ring (32) is installed at the bottom of the hollow shaft (31), each of the guide members includes a transmission shaft (33) rotatably connected to the drill frame (7), A slide (34) is slidably connected to the drill frame (7), a gear sleeve (35) is rotatably connected to the slide (34), a pulley shaft (36) and a positioning shaft (37), a connecting rod (38) is hinged between the slide (34) and the driven swivel (30), a driven bevel gear connected to the transmission bevel gear ring (32) is fixedly installed at the tail end of the transmission shaft (33), the positioning shaft (37), the pulley shaft (36) and the gear sleeve (35) are all driven by the transmission shaft (33), and the two auxiliary drill rods (10) and the two grinding rods (11) are all installed on the positioning shaft (37) at corresponding positions.

7. The device for drilling and polishing frames for electronic equipment production according to claim 6, characterized in that: A through slot with two ends open and slidably connected to the transmission shaft (33) is fixedly provided inside the gear sleeve (35), and the cross sections of the through slot and the transmission shaft (33) are both regular polygons. A third bevel gear is mounted on the gear sleeve (35) and the pulley shaft (36), and the two third bevel gears are meshed with each other. A third transmission toothed belt is connected between the pulley shaft (36) and the positioning shaft (37).

8. The device for drilling and polishing frames for electronic equipment production according to claim 6, characterized in that: A reverse transmission shaft (39) is rotatably mounted on the impact frame (3), a reverse bevel gear is mounted on the reverse transmission shaft (39), a fourth bevel gear is mounted on each of the impact main shaft (6) and the hollow shaft (31), two fourth bevel gears are transmission-connected to the reverse bevel gear, and the two fourth bevel gears are respectively arranged on both sides of the reverse bevel gear.

9. The device for drilling and polishing frames for electronic equipment production according to claim 1, characterized in that: A liquid inlet ring (40) is rotatably sleeved on the impact spindle (6), the inner cavity of the liquid inlet ring (40) is rotatably connected to the water cooling channel (12), and the liquid inlet ring (40) is connected to a liquid inlet joint.

10. The device for drilling and polishing frames for electronic equipment production according to claim 1, characterized in that: The bottom end of the main drill rod (8) has a conical tip structure, the radius of the grinding rod (11) is the same as the radius of the auxiliary drill rod (10), and the radius of the main drill rod (8) is 1.1 to 1.3 times the diameter of the grinding rod (11).

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