A drilling device for processing a metal computer support and an operating method thereof

Abstract

The application relates to the technical field of drilling devices, and discloses a drilling device for metal computer support machining and an operation method thereof, which comprises a driven feeding mechanism and a buffer liquid flow control mechanism. The drilling device for metal computer support machining and the operation method thereof utilize the liquid output by a hydraulic system to control the feeding of a drill bit, realize systematic feeding pressure control on the basis of guaranteeing the driven feeding, can guarantee the drilling efficiency of the drill bit on the metal computer support and the effective utilization rate of kinetic energy on one hand, and can effectively prevent the drill bit and the metal computer support from being deformed due to the overloading of the feeding pressure on the other hand, so that the limitation of the equipment in the use process is reduced, and the self-adaptability of the equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, specifically to a drilling device for processing metal computer brackets and its operating method. Background Technology

[0002] To facilitate the connection between the computer and the wall, a metal computer bracket is generally used to connect the computer to the wall to be installed. After the metal computer bracket is made into a blank by a mold, it still needs to be drilled. Therefore, drilling equipment is required to drill holes in the metal computer bracket.

[0003] The mainstream drilling device for machining metal computer brackets includes a drive motor, a drill bit that rotates with the rotor of the drive motor and drills holes in the bracket, and a feed mechanism that drives the drill bit to move along the drilling direction. During operation, the metal computer bracket is fixed below the drill bit using a clamping fixture, with the part of the metal computer bracket to be drilled (the base hole) directly below the drill bit. Then, the drive motor is started, and its rotor drives the drill bit to rotate rapidly. The feed mechanism then controls the drill bit to move downwards. When the drill bit contacts the metal computer bracket, the surface of the metal computer bracket is drilled. Most existing feed mechanisms are manually operated, requiring manual control of the downward pressure applied to the drill bit. This manual control is often limited and demands a high level of individual skill. When the downward pressure applied to the drill bit is low, the drilling pressure on the metal computer support is also low. Insufficient drilling pressure leads to decreased drilling efficiency (insufficient drilling pressure prevents the effective use of drilling energy, especially in harder materials, where drilling efficiency is severely reduced). Conversely, overloading the feed mechanism's downward pressure on the drill bit results in overload on the drilling pressure on the metal computer support, potentially causing deformation and damage to the drill bit or the metal computer support. Therefore, these mechanisms have significant limitations in their application. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a drilling device and its operating method for processing metal computer brackets. It utilizes the fluid output from a hydraulic system to control the feed of the drill bit. While ensuring a driven feed, it achieves systematic feed pressure control. This ensures efficient drilling of the metal computer bracket and effective utilization of kinetic energy. Furthermore, it effectively prevents overload of the feed pressure, thus avoiding deformation of the drill bit and the metal computer bracket. This reduces the limitations of the equipment during use, improves its adaptability, and solves the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for processing metal computer brackets, comprising a device mounting plate with an upper connecting rod and a lower connecting rod on one side, a drive motor fixedly mounted to one end of the upper connecting rod via a motor fixing sleeve, and a drill bit capable of drilling objects; further comprising a driven feed mechanism, the structure of which includes a hollow rotating shaft that can rotate with the rotor of the drive motor and has a hollow internal structure, a longitudinal telescopic shaft that can rotate with the hollow rotating shaft and drive the drill bit longitudinally under hydraulic pressure, and a stationary sleeve that is rotatably mounted on the top of the hollow rotating shaft and can realize directional liquid diversion; and a buffered liquid flow control mechanism, the structure of which includes a liquid pre-storage shell fixedly mounted to the end of the lower connecting rod and has a hollow internal structure, a third movable chamber disposed inside the liquid pre-storage shell and capable of pre-storing liquid from the stationary sleeve, and a third piston plate that moves upward and realizes liquid flow inside the device when subjected to external liquid pressure.

[0006] Preferably, the driven feed mechanism further includes a first docking plate integrally disposed at the top of the hollow rotating shaft and fixedly installed at the end of the drive motor rotor. The hollow rotating shaft has a first movable cavity inside, a first flow-limiting cavity at the top of the first movable cavity, and a shaft through-hole communicating with the external space at the bottom of the first movable cavity. A first piston plate capable of moving axially is placed inside the first movable cavity, and a longitudinal telescopic shaft penetrating the shaft through-hole is fixedly installed at the bottom of the first piston plate. The longitudinal telescopic shaft is located inside the first movable cavity. The outer casing is fitted with a No. 1 helical spring in a compressed state. The bottom end of the longitudinal telescopic shaft is provided with a No. 2 docking plate that is fixedly connected to the drill bit. The interior of the stationary sleeve is provided with a shaft mounting cavity with open ends. The top and bottom of the shaft mounting cavity are mounted to the top shaft of the hollow rotating shaft through bearings and sealing rings. The side of the hollow rotating shaft is provided with a No. 1 liquid hole that connects the middle cavity of the shaft mounting cavity and the No. 1 flow limiting cavity. The side of the stationary sleeve is provided with a No. 1 docking channel and a No. 2 docking channel that connect the external space and the middle cavity of the shaft mounting cavity.

[0007] Preferably, the structural shape of the shaft perforation cross section is consistent with the structural shape of the longitudinal telescopic shaft cross section, both being polygonal structures, and the structural dimensions of the shaft perforation cross section match the structural dimensions of the longitudinal telescopic shaft cross section.

[0008] Preferably, the buffered liquid flow control mechanism further includes a second movable cavity disposed inside the liquid pre-storage housing and located on one side of the third movable cavity. The top of the second movable cavity and the top of the third movable cavity are respectively provided with a second flow-limiting cavity and a third flow-limiting cavity. The top of the liquid pre-storage housing is provided with a third docking channel connecting to the second flow-limiting cavity and a fifth docking channel connecting to the third flow-limiting cavity. The bottom of the liquid pre-storage housing is provided with a fourth docking channel connecting to the bottom of the second movable cavity. The second movable cavity contains... There is a No. 3 piston plate that can move along its axis. Inside the No. 3 movable chamber, there is a No. 2 piston plate that can move along its axis. At the bottom of the No. 2 piston plate, there is a No. 2 helical spring in a compressed state. The No. 2 flow-limiting chamber and the No. 3 flow-limiting chamber are connected through a No. 2 liquid hole. Inside the No. 2 liquid hole, there is a liquid one-way valve that can control the liquid to flow unidirectionally from the No. 3 flow-limiting chamber to the No. 2 flow-limiting chamber. The No. 3 docking channel and the No. 2 docking channel are connected through a No. 2 connecting pipe.

[0009] Preferably, the closed area formed by the No. 3 piston plate, the No. 2 movable cavity, the No. 2 flow-limiting cavity, the No. 3 docking channel, the No. 2 connecting pipe, the No. 2 docking channel, the middle cavity of the shaft mounting cavity, the No. 1 liquid hole, the No. 1 flow-limiting cavity, the No. 1 movable cavity, and the No. 1 piston plate is filled with an appropriate amount of hydraulic oil.

[0010] Preferably, it also includes a liquid flow pressure control mechanism, the structure of which includes a horizontal hollow cylinder installed at one end of the first docking channel and capable of introducing hydraulic oil into the fifth docking channel, an internal valve plate placed inside the horizontal hollow cylinder and capable of controlling the opening and closing of the liquid flow, and a third helical spring capable of generating elastic damping on the internal valve plate.

[0011] Preferably, the liquid flow pressure control mechanism further includes a fourth movable cavity disposed inside a horizontal hollow cylinder. The two ends of the horizontal hollow cylinder are respectively provided with a sixth docking channel and a seventh docking channel connecting the two ends of the fourth movable cavity. One end of the sixth docking channel is fixedly connected to the end of the first docking channel. The seventh docking channel is connected to the fifth docking channel via a first connecting pipe. An internal valve plate capable of moving along its axial direction is placed inside the fourth movable cavity. The internal valve plate has a recessed embedding groove at the end facing the sixth docking channel, in which a sealing gasket is embedded to prevent liquid leakage. Multiple liquid flow grooves for liquid flow are provided on the circumferential side of the internal valve plate. A third helical spring in a compressed state is installed at the other end of the internal valve plate.

[0012] Preferably, the depth of the embedding groove is less than the thickness of the sealing gasket, and the structural radius of the sealing gasket is greater than the structural radius of the inner hole of the sixth docking channel and less than the distance between the center line of the liquid flow channel and the built-in valve plate.

[0013] Preferably, the elastic strength of the third helical spring in the initial state is greater than that of the first helical spring in the initial state, and the elastic strength of the first helical spring in the initial state is greater than that of the second helical spring in the initial state.

[0014] As a preferred operating method, S1: Fix the equipment mounting plate to the corresponding position on the workbench, then connect the fourth docking channel to the fluid circuit of a hydraulic system capable of controlling the fluid flow direction. Next, fix the metal computer bracket below the drill bit using a fixing clamp, ensuring the position of the hole to be drilled in the metal computer bracket is directly below the drill bit. Then, start the drive motor. S2: The rotor of the drive motor drives the hollow shaft to rotate. Due to the structural shape of the longitudinal telescopic shaft, the longitudinal telescopic shaft drives the drill bit to rotate. Then, start the hydraulic... S3: The hydraulic system output fluid exerts an upward thrust on piston plate number three. When this thrust exceeds the elastic pressure of helical spring number one, spring number one is compressed. The hydraulic oil inside the equipment then sequentially passes through movable chamber number two, flow-limiting chamber number two, docking channel number three, connecting pipe number two, docking channel number two, the central cavity of the shaft mounting cavity, fluid hole number one, and flow-limiting chamber number one, entering movable chamber number one. This causes piston plate number one to move downwards, which in turn drives the longitudinal telescopic shaft and drill bit to feed downwards, allowing the drill bit to engage with the metal... The drilling is performed using a computer bracket, while the hydraulic system provides downward drilling pressure on the drill bit. S4: During drilling, the metal computer bracket's obstruction of the drill bit generates a reverse force on the flowing hydraulic oil. When this reverse force, i.e., the output pressure of the hydraulic system, exceeds the elastic strength of the No. 3 helical spring, it causes the built-in valve plate to move in a specific direction. At this time, excess hydraulic oil will sequentially flow through the No. 1 active chamber, the No. 1 flow-limiting chamber, the No. 1 liquid hole, the middle cavity of the shaft mounting cavity, the No. 1 docking channel, the No. 6 docking channel, and the built-in valve. The movement gap of the plate, the liquid flow channel, the fourth movable chamber, the seventh docking channel, the first connecting pipe and the fifth docking channel enter the interior of the third flow limiting chamber and the third movable chamber, causing the second piston plate to move down, while the hydraulic oil is pre-stored inside the third movable chamber, thereby realizing the release of hydraulic pressure and preventing the occurrence of drilling pressure overload; S5: After the work is completed, the hydraulic system is controlled to make the liquid located below the third piston plate flow back into the hydraulic system. At the same time, under the action of the first helical spring and the third helical spring, the hydraulic oil flows back to the initial position.

[0015] Compared with the prior art, the present invention provides a drilling device and its operating method for processing metal computer brackets, which has the following beneficial effects: 1. The hydraulic system outputs fluid to control the drill bit's feed. While ensuring driven feed, it achieves systematic feed pressure control. On the one hand, this ensures the drilling efficiency of the drill bit on the metal computer support and the effective utilization of kinetic energy. On the other hand, it effectively prevents feed pressure overload from causing deformation of the drill bit and metal computer support, thereby reducing the limitations of the equipment during use and improving its adaptability.

[0016] 2. Equipped with a driven feed mechanism, the hollow rotating shaft, piston plate No. 1, longitudinal telescopic shaft, helical spring No. 1, and stationary sleeve work together. The hollow rotating shaft drives the longitudinal telescopic shaft to rotate synchronously with the drill bit to ensure drilling power, while the hydraulic pressure pushes the piston plate No. 1 to drive the longitudinal telescopic shaft to achieve stable longitudinal feed. The helical spring No. 1 can automatically reset after pressure relief. The stationary sleeve, the No. 1 hydraulic hole, and the docking channel enable directional drainage of hydraulic oil without interfering with the rotation of the rotating shaft. The overall structure is compact and has good transmission synchronization. It can provide stable and controllable feed power while ensuring the drill bit's rotation and cutting, improving drilling efficiency and reducing human operation errors.

[0017] 3. Equipped with a buffered liquid flow control mechanism, consisting of a liquid pre-storage shell, a second movable chamber, a third movable chamber, a third piston plate, a second piston plate, a second helical spring, and a liquid check valve. The third piston plate is hydraulically driven to achieve directional oil delivery. The third movable chamber can temporarily buffer excess hydraulic oil during overload. The second helical spring assists the second piston plate in resetting. The liquid check valve ensures unidirectional oil flow and prevents backflow from interfering with the feed. The overall structure achieves the dual functions of stable hydraulic supply and overload buffering and pressure relief, effectively maintaining stable feed pressure, avoiding pressure shocks, and ensuring a smooth and reliable drilling process.

[0018] 4. Equipped with a liquid flow pressure control mechanism, which works in conjunction with a horizontal hollow cylinder, an internal valve plate, a sealing gasket, a liquid flow channel, and a No. 3 helical spring. When the drilling resistance is too high or the hydraulic pressure exceeds the threshold, the high-pressure oil pushes the internal valve plate to compress the No. 3 helical spring, causing the oil to be diverted and depressurized through the gap between the sealing gasket and the liquid flow channel. This can precisely limit the maximum drilling pressure, preventing damage to the drill bit and workpiece due to overload deformation. The sealing gasket ensures a leak-proof seal under normal conditions. The structure is simple, sensitive, and responsive, effectively improving drilling safety and the equipment's self-adaptive capabilities. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 This is a perspective view of the driven feed mechanism in this invention; Figure 4 This is a three-dimensional cross-sectional view of the driven feed mechanism in this invention; Figure 5 This is a perspective view of the buffered liquid flow control mechanism in this invention; Figure 6 This is a three-dimensional cross-sectional view of the buffered liquid flow control mechanism in this invention; Figure 7 This is a perspective view of the liquid flow pressure control mechanism in this invention; Figure 8 This is a three-dimensional cross-sectional view of the liquid flow pressure control mechanism in this invention.

[0020] The components include: 1. Equipment mounting plate; 2. Upper connecting rod; 3. Lower connecting rod; 4. Motor fixing sleeve; 5. Drive motor; 6. Drill bit; 7. Driven feed mechanism; 71. Hollow rotating shaft; 72. No. 1 docking plate; 73. No. 1 movable cavity; 74. No. 1 flow-limiting cavity; 75. Shaft through hole; 76. No. 1 piston plate; 77. Longitudinal telescopic shaft; 78. No. 1 helical spring; 79. No. 2 docking plate; 710. Stationary sleeve; 711. Shaft mounting cavity; 712. No. 1 docking channel; 713. No. 2 docking channel; 714. No. 1 liquid hole; 8. Buffered liquid flow control mechanism; 81. Liquid pre-storage shell; 82. No. 2 movable cavity; 8 3. No. 3 movable chamber; 84. No. 3 docking channel; 85. No. 4 docking channel; 86. No. 5 docking channel; 87. No. 2 flow-limiting chamber; 88. No. 3 flow-limiting chamber; 89. No. 2 piston plate; 810. No. 2 helical spring; 811. No. 2 liquid hole; 812. Liquid check valve; 813. No. 3 piston plate; 9. Liquid flow pressure control mechanism; 91. Horizontal hollow cylinder; 92. No. 4 movable chamber; 93. No. 6 docking channel; 94. No. 7 docking channel; 95. Built-in valve plate; 96. Sealing gasket; 97. Liquid flow groove; 98. No. 3 helical spring; 99. Embedded groove; 10. No. 1 connecting pipe; 11. No. 2 connecting pipe. Detailed Implementation

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

[0022] Please see Figure 1 and Figure 2A drilling device for processing metal computer brackets includes an equipment mounting plate 1 with an upper connecting rod 2 and a lower connecting rod 3 on one side, a drive motor 5 fixedly mounted to one end of the upper connecting rod 2 via a motor fixing sleeve 4, and a drill bit 6 capable of drilling holes in objects. The equipment mounting plate 1 is fixedly mounted on the corresponding part of the workbench, and then the fourth docking channel 85 is connected to the liquid circuit of a hydraulic system capable of controlling the direction of liquid flow. After that, the metal computer bracket is fixed below the drill bit with a fixing clamp, and the position in the metal computer bracket to be drilled is located directly below the drill bit, and then the drive motor 5 can be started.

[0023] To achieve hydraulic feed functionality and controllable hydraulic oil flow, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 3 and Figure 4 A driven feed mechanism 7 needs to be set up. Its structure includes a hollow shaft 71 that can rotate with the rotor of the drive motor 5 and has a hollow internal structure, a longitudinal telescopic shaft 77 that can rotate with the hollow shaft 71 and drive the drill bit 6 to move longitudinally under hydraulic pressure, and a stationary sleeve 710 that is rotatably installed on the top of the hollow shaft 71 and can realize the directional drainage of liquid. The rotor of the drive motor 5 drives the hollow shaft 71 to rotate. Due to the structural shape of the longitudinal telescopic shaft 77, the longitudinal telescopic shaft 77 drives the drill bit 6 to rotate. Then the hydraulic system is started. When the hydraulic oil enters the interior of the first movable chamber 73 through the first flow-limiting chamber 74, it will cause the first piston plate 76 to move downward. The first piston plate 76 will drive the longitudinal telescopic shaft 77 and the drill bit 6 to feed downward, so that the drill bit 6 drills a hole in the metal computer bracket. At the same time, the hydraulic pressure provided by the hydraulic system forms a downward drilling pressure on the drill bit 6, thereby realizing the hydraulic feed function and the controllable flow of hydraulic oil.

[0024] For details regarding the specific structure of the driven feed mechanism 7, please refer to [link / reference]. Figure 3 and Figure 4It also includes a first docking plate 72 integrally disposed at the top of the hollow rotating shaft 71 and fixedly installed at the rotor end of the drive motor 5. The hollow rotating shaft 71 has a first movable cavity 73 inside. The top of the first movable cavity 73 has a first flow-limiting cavity 74. The bottom of the first movable cavity 73 has a shaft through hole 75 communicating with the outside space. The first piston plate 76 capable of moving along its axial direction is placed inside the first movable cavity 73. The bottom of the first piston plate 76 is fixedly installed with a longitudinal telescopic shaft 77 that passes through the shaft through hole 75. The longitudinal telescopic shaft 77 has a first helical spring 78 in a compressed state sleeved around the rod body located inside the first movable cavity 73. The bottom of the longitudinal telescopic shaft 77 has a second docking plate fixedly connected to the drill bit 6. 79. The interior of the stationary sleeve 710 is provided with a shaft mounting cavity 711 with open ends. The top and bottom of the shaft mounting cavity 711 are mounted to the top shaft of the hollow rotating shaft 71 by bearings and sealing rings. The side of the hollow rotating shaft 71 is provided with a first liquid hole 714 connecting the middle cavity of the shaft mounting cavity 711 and the first flow limiting cavity 74. The side of the stationary sleeve 710 is provided with a first docking channel 712 and a second docking channel 713 connecting the external space and the middle cavity of the shaft mounting cavity 711. The cross-sectional shape of the shaft through hole 75 is consistent with the cross-sectional shape of the longitudinal telescopic shaft 77, both being polygonal structures, and the cross-sectional dimensions of the shaft through hole 75 match the cross-sectional dimensions of the longitudinal telescopic shaft 77.

[0025] To enable the pre-storage and reset functions for hydraulic oil, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 5 and Figure 6A buffered liquid flow control mechanism 8 needs to be installed. Its structure includes a liquid pre-storage housing 81 fixedly installed at the end of the lower connecting rod 3 and having a hollow interior; a third movable chamber 83 located inside the liquid pre-storage housing 81 and capable of pre-storing liquid from the stationary sleeve 710; and a third piston plate 813 that moves upward under external liquid pressure, enabling liquid flow inside the equipment. The liquid output from the hydraulic system exerts an upward thrust on the third piston plate 813. When this thrust exceeds the elastic pressure of the first helical spring 78, the first helical spring 78 is compressed, and the hydraulic oil inside the equipment will... The hydraulic oil sequentially enters the interior of the first movable cavity 73 through the second movable cavity 82, the second flow-limiting cavity 87, the third docking channel 84, the second connecting pipe 11, the second docking channel 713, the middle cavity of the shaft mounting cavity 711, the first liquid hole 714, and the first flow-limiting cavity 74, thus realizing the transmission of hydraulic oil force. After the work is completed, the hydraulic system is controlled to allow the liquid located below the third piston plate 813 to flow back into the hydraulic system. At the same time, under the action of the first helical spring 78 and the third helical spring 98, the hydraulic oil flows back to the initial position, thereby realizing the pre-storage and reset functions of the hydraulic oil.

[0026] For details regarding the specific structure of the buffered liquid flow control mechanism 8, please refer to [link / reference]. Figure 5 and Figure 6 It also includes a second movable cavity 82 disposed inside the liquid pre-storage housing 81 and located on one side of the third movable cavity 83. A second flow-limiting cavity 87 and a third flow-limiting cavity 88 are respectively disposed at the top of the second movable cavity 82 and the top of the third movable cavity 83. The top of the liquid pre-storage housing 81 is provided with a third docking channel 84 connecting the second flow-limiting cavity 87 and a fifth docking channel 86 connecting the third flow-limiting cavity 88. The bottom of the liquid pre-storage housing 81 is provided with a fourth docking channel 85 connecting the bottom of the second movable cavity 82. A third piston plate 813 capable of moving axially is installed inside the second movable cavity 82. A second piston plate 89 capable of moving axially is installed inside the third movable cavity 83. A pressure-sensitive device is installed at the bottom of the second piston plate 89. The second helical spring 810 in its compressed state is connected to the second flow-limiting cavity 87 and the third flow-limiting cavity 88 via the second liquid hole 811. The second liquid hole 811 is equipped with a liquid one-way valve 812, which controls the liquid to flow unidirectionally from the third flow-limiting cavity 88 to the second flow-limiting cavity 87. The third docking channel 84 and the second docking channel 713 are connected via the second connecting pipe 11. The closed area formed by the third piston plate 813, the second movable cavity 82, the second flow-limiting cavity 87, the third docking channel 84, the second connecting pipe 11, the second docking channel 713, the middle cavity of the shaft mounting cavity 711, the first liquid hole 714, the first flow-limiting cavity 74, the first movable cavity 73, and the first piston plate 76 is filled with an appropriate amount of hydraulic oil.

[0027] To achieve control over maximum borehole pressure, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 7 and Figure 8 A liquid flow pressure control mechanism 9 needs to be installed. Its structure includes a horizontal hollow cylinder 91 installed at one end of the first docking channel 712, capable of guiding hydraulic oil into the fifth docking channel 86; an internal valve plate 95 placed inside the horizontal hollow cylinder 91, capable of controlling the opening and closing of the liquid flow; and a third helical spring 98 that provides elastic damping to the internal valve plate 95. During drilling, the metal computer bracket's obstruction of the drill bit 6 generates a reverse force on the flowing hydraulic oil. When this reverse force, i.e., the output pressure of the hydraulic system, exceeds the elastic strength of the third helical spring 98, it will cause the internal valve plate 95 to become stationary. During the movement, excess hydraulic oil will sequentially flow through the first movable chamber 73, the first flow-limiting chamber 74, the first liquid hole 714, the middle cavity of the shaft mounting cavity 711, the first docking channel 712, the sixth docking channel 93, the movement gap of the built-in valve plate 95, the liquid flow groove 97, the fourth movable chamber 92, the seventh docking channel 94, the first connecting pipe 10, and the fifth docking channel 86 into the third flow-limiting chamber 88 and the third movable chamber 83, causing the second piston plate 89 to move downwards. Meanwhile, the hydraulic oil is pre-stored inside the third movable chamber 83, thereby releasing the hydraulic pressure and preventing the occurrence of drilling pressure overload.

[0028] For details regarding the specific structure of the liquid flow pressure control mechanism 9, please refer to [link / reference needed]. Figure 7 and Figure 8It also includes a fourth movable cavity 92 disposed inside a horizontal hollow cylinder 91. The horizontal hollow cylinder 91 has a sixth docking channel 93 and a seventh docking channel 94 respectively connecting the two ends of the fourth movable cavity 92. One end of the sixth docking channel 93 is fixedly connected to the end of the first docking channel 712. The seventh docking channel 94 is connected to the fifth docking channel 86 via a first connecting pipe 10. An internal valve plate 95 capable of moving along its axial direction is housed inside the fourth movable cavity 92. The internal valve plate 95 has a concave embedding groove 99 at the end facing the sixth docking channel 93, and a sealing gasket 96 for preventing liquid leakage is embedded in the embedding groove 99. The built-in valve plate 95 has multiple liquid flow grooves 97 on its circumferential side for liquid flow. A third helical spring 98 in a compressed state is installed at the other end of the built-in valve plate 95. The depth of the embedded groove 99 is less than the thickness of the sealing gasket 96. The structural radius of the sealing gasket 96 is greater than the structural radius of the inner hole of the sixth docking channel 93 and less than the distance between the center line of the liquid flow groove 97 and the built-in valve plate 95. The elastic strength of the third helical spring 98 in the initial state is greater than that of the first helical spring 78 in the initial state. The elastic strength of the first helical spring 78 in the initial state is greater than that of the second helical spring 810 in the initial state.

[0029] During operation, follow these steps: S1: Fix the equipment mounting plate 1 to the corresponding position on the workbench, then connect the fourth docking channel 85 to the liquid circuit of a hydraulic system capable of controlling the direction of liquid flow. Next, fix the metal computer bracket below the drill bit using a fixing clamp, ensuring the position of the hole to be drilled in the metal computer bracket is directly below the drill bit. Then, start the drive motor 5; S2: The rotor of the drive motor 5 drives the hollow shaft 71 to rotate. Due to the structural shape of the longitudinal telescopic shaft 77, the longitudinal telescopic shaft 77 drives the drill bit 6 to rotate. Then, start the hydraulic system; S3: Hydraulic... The liquid output by the system exerts an upward thrust on the third piston plate 813. When this thrust exceeds the elastic pressure of the first helical spring 78, the first helical spring 78 is compressed. The hydraulic oil inside the equipment then sequentially enters the first movable chamber 73 through the second movable chamber 82, the second flow-limiting chamber 87, the third docking channel 84, the second connecting pipe 11, the second docking channel 713, the middle cavity of the shaft mounting cavity 711, the first liquid hole 714, and the first flow-limiting chamber 74. This causes the first piston plate 76 to move downward, which in turn drives the longitudinal telescopic shaft 77 and the drill bit 6 to feed downward, causing the drill bit 6 to... Drilling is performed on the metal computer bracket. Simultaneously, the hydraulic pressure provided by the hydraulic system exerts downward drilling pressure on the drill bit 6. S4: During drilling, the obstruction of the drill bit 6 by the metal computer bracket generates a reverse force on the flowing hydraulic oil. When this reverse force, i.e., the output pressure of the hydraulic system, is greater than the elastic strength of the No. 3 helical spring 98, it will cause the built-in valve plate 95 to move in a specific direction. At this time, the excess hydraulic oil will sequentially flow through the No. 1 active cavity 73, the No. 1 flow-limiting cavity 74, the No. 1 liquid hole 714, the middle cavity of the shaft mounting cavity 711, the No. 1 docking channel 712, the No. 6 docking channel 93, and the built-in valve plate 95. S5: The movement gap, liquid flow channel 97, fourth movable chamber 92, seventh docking channel 94, first connecting pipe 10 and fifth docking channel 86 enter the interior of the third flow limiting chamber 88 and the third movable chamber 83, causing the second piston plate 89 to move downward, while the hydraulic oil is pre-stored inside the third movable chamber 83, thereby realizing the release of hydraulic pressure and preventing the occurrence of drilling pressure overload; S5: After the work is completed, the hydraulic system is controlled to make the liquid located below the third piston plate 813 flow back into the hydraulic system. At the same time, under the action of the first helical spring 78 and the third helical spring 98, the hydraulic oil flows back to the initial position.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling device for processing metal computer brackets, comprising a device mounting plate (1) with an upper connecting rod (2) and a lower connecting rod (3) on one side, a drive motor (5) fixedly mounted to one end of the upper connecting rod (2) via a motor fixing sleeve (4), and a drill bit (6) capable of drilling objects, characterized in that: Also includes, The driven feed mechanism (7) includes a hollow shaft (71) that can rotate with the rotor of the drive motor (5) and has a hollow internal structure, a longitudinal telescopic shaft (77) that can rotate with the hollow shaft (71) and drive the drill bit (6) to move longitudinally under hydraulic pressure, and a stationary sleeve (710) that is rotatably mounted on the top of the hollow shaft (71) and can realize the directional flow of liquid. And a buffered liquid flow control mechanism (8), the structure of which includes a liquid pre-storage housing (81) fixedly installed at the end of the lower connecting rod (3) and having a hollow internal structure, a third active chamber (83) located inside the liquid pre-storage housing (81) and capable of pre-storing liquid from the stationary sleeve (710), and a third piston plate (813) that moves upward and realizes the flow of liquid inside the device when subjected to external liquid pressure.

2. The drilling device for processing metal computer brackets according to claim 1, characterized in that: The driven feed mechanism (7) further includes a first docking plate (72) integrally disposed at the top of the hollow rotating shaft (71) and fixedly installed at the rotor end of the drive motor (5). The hollow rotating shaft (71) is provided with a first movable cavity (73). The top of the first movable cavity (73) is provided with a first flow limiting cavity (74). The bottom of the first movable cavity (73) is provided with a shaft through hole (75) communicating with the external space. The first movable cavity (73) is provided with a first piston plate (76) capable of moving along its axial direction. The bottom of the first piston plate (76) is fixedly installed with a longitudinal telescopic shaft (77) passing through the shaft through hole (75). The longitudinal telescopic shaft (77) is sleeved around the rod body located inside the first movable cavity (73). There is a first helical spring (78) in a compressed state. The bottom end of the longitudinal telescopic shaft (77) is provided with a second docking plate (79) that is fixedly connected to the drill bit (6). The interior of the stationary sleeve (710) is provided with a shaft mounting cavity (711) with open structures at both ends. The top and bottom of the shaft mounting cavity (711) are installed at the top shaft of the hollow rotating shaft (71) through bearings and sealing rings. The side of the hollow rotating shaft (71) is provided with a first liquid hole (714) that connects the middle cavity of the shaft mounting cavity (711) and the first flow limiting cavity (74). The side of the stationary sleeve (710) is provided with a first docking channel (712) and a second docking channel (713) that connect the external space and the middle cavity of the shaft mounting cavity (711).

3. The drilling device for processing metal computer brackets according to claim 2, characterized in that: The cross-sectional shape of the shaft through hole (75) is consistent with the cross-sectional shape of the longitudinal telescopic shaft (77), both being polygonal structures, and the structural dimensions of the cross-sectional shape of the shaft through hole (75) match the structural dimensions of the cross-sectional shape of the longitudinal telescopic shaft (77).

4. The drilling device for processing metal computer brackets according to claim 3, characterized in that: The buffered liquid flow control mechanism (8) further includes a second movable cavity (82) disposed inside the liquid pre-storage housing (81) and located on one side of the third movable cavity (83). The top of the second movable cavity (82) and the top of the third movable cavity (83) are respectively provided with a second flow-limiting cavity (87) and a third flow-limiting cavity (88). The top of the liquid pre-storage housing (81) is provided with a third docking channel (84) connecting the second flow-limiting cavity (87) and a fifth docking channel (86) connecting the third flow-limiting cavity (88). The bottom of the liquid pre-storage housing (81) is provided with a fourth docking channel (85) connecting the bottom of the second movable cavity (82). The interior of the second movable cavity (82) is equipped with a flow control mechanism that can flow along the flow path. The piston plate (813) moves axially. Inside the third movable chamber (83) is a second piston plate (89) that can move axially. The bottom of the second piston plate (89) is equipped with a second helical spring (810) in a compressed state. The second flow limiting chamber (87) and the third flow limiting chamber (88) are connected by a second liquid hole (811). A liquid check valve (812) is installed inside the second liquid hole (811). The liquid check valve (812) can control the liquid to flow unidirectionally from the third flow limiting chamber (88) to the second flow limiting chamber (87). The third docking channel (84) and the second docking channel (713) are connected by a second connecting pipe (11).

5. The drilling device for processing a metal computer bracket according to claim 4, characterized in that: The closed area formed by the No. 3 piston plate (813), the No. 2 movable cavity (82), the No. 2 flow-limiting cavity (87), the No. 3 docking channel (84), the No. 2 connecting pipe (11), the No. 2 docking channel (713), the middle cavity of the shaft mounting cavity (711), the No. 1 liquid hole (714), the No. 1 flow-limiting cavity (74), the No. 1 movable cavity (73), and the No. 1 piston plate (76) is filled with an appropriate amount of hydraulic oil.

6. The drilling device for processing metal computer brackets according to claim 5, characterized in that: It also includes a liquid flow pressure control mechanism (9), the structure of which includes a horizontal hollow cylinder (91) installed at one end of the first docking channel (712) and capable of introducing hydraulic oil into the fifth docking channel (86), an internal valve plate (95) placed inside the horizontal hollow cylinder (91) and capable of controlling the opening and closing of liquid flow, and a third helical spring (98) capable of generating elastic damping on the internal valve plate (95).

7. The drilling device for processing a metal computer bracket according to claim 6, characterized in that: The liquid flow pressure control mechanism (9) further includes a fourth movable cavity (92) disposed inside a horizontal hollow cylinder (91). The horizontal hollow cylinder (91) has a sixth docking channel (93) and a seventh docking channel (94) respectively connecting the two ends of the fourth movable cavity (92). One end of the sixth docking channel (93) is fixedly connected to the end of the first docking channel (712). The seventh docking channel (94) is connected to the fifth docking channel (86) via a first connecting pipe (10). The inner cavity (92) contains a built-in valve plate (95) that can move along its axial direction. The built-in valve plate (95) has a recessed embedding groove (99) at one end facing the sixth docking channel (93). A sealing gasket (96) that can prevent liquid leakage is embedded in the embedding groove (99). The circumferential side of the built-in valve plate (95) is provided with multiple liquid flow grooves (97) for liquid flow. The other end of the built-in valve plate (95) is equipped with a third helical spring (98) in a compressed state.

8. The drilling device for processing metal computer brackets according to claim 7, characterized in that: The depth of the embedded groove (99) is less than the thickness of the sealing gasket (96), and the structural radius of the sealing gasket (96) is greater than the structural radius of the inner hole of the sixth docking channel (93) and less than the distance between the center line of the liquid flow groove (97) and the built-in valve plate (95).

9. The drilling device for processing a metal computer bracket according to claim 8, characterized in that: The elastic strength of the third helical spring (98) in the initial state is greater than that of the first helical spring (78) in the initial state, and the elastic strength of the first helical spring (78) in the initial state is greater than that of the second helical spring (810) in the initial state.

10. A method for operating the drilling device for processing a metal computer bracket according to claim 9, characterized in that: Includes the following steps, S1: Fix the equipment mounting plate (1) to the corresponding part of the workbench, and then connect the No. 4 docking channel (85) to the liquid circuit of a hydraulic system that can control the direction of liquid flow. After that, fix the metal computer bracket to the bottom of the drill bit with the fixing clamp, and make the position of the hole to be drilled in the metal computer bracket directly below the drill bit, and then start the drive motor (5). S2: The rotor of the drive motor (5) drives the hollow shaft (71) to rotate. Due to the structural shape of the longitudinal telescopic shaft (77), the longitudinal telescopic shaft (77) drives the drill bit (6) to rotate, and then the hydraulic system is started. S3: The liquid output by the hydraulic system generates an upward thrust on the No. 3 piston plate (813). When the thrust is greater than the elastic pressure of the No. 1 helical spring (78), the No. 1 helical spring (78) is compressed. The hydraulic oil inside the equipment will sequentially pass through the No. 2 active chamber (82), the No. 2 flow-limiting chamber (87), the No. 3 docking channel (84), the No. 2 connecting pipe (11), the No. 2 docking channel (713), the middle cavity of the shaft mounting cavity (711), the No. 1 liquid hole (714), and the No. 1 flow-limiting chamber (74) into the interior of the No. 1 active chamber (73), causing the No. 1 piston plate (76) to move downward. The No. 1 piston plate (76) will drive the longitudinal telescopic shaft (77) and the drill bit (6) to feed downward, so that the drill bit (6) drills the metal computer bracket. At the same time, the hydraulic pressure provided by the hydraulic system forms a downward drilling pressure on the drill bit (6). S4: During the drilling process, the metal computer bracket obstructs the drill bit (6) and generates a reverse force on the flowing hydraulic oil. When this reverse force, i.e., the output pressure of the hydraulic system, is greater than the elastic strength of the No. 3 helical spring (98), it will cause the built-in valve plate (95) to move in a specific direction. At this time, the excess hydraulic oil will flow sequentially along the No. 1 active cavity (73), the No. 1 flow-limiting cavity (74), the No. 1 liquid hole (714), the middle cavity of the shaft mounting cavity (711), and the No. 1 docking channel (714). 12) The movement gap of the sixth docking channel (93), the built-in valve plate (95), the liquid flow groove (97), the fourth movable chamber (92), the seventh docking channel (94), the first connecting pipe (10) and the fifth docking channel (86) enter the interior of the third flow limiting chamber (88) and the third movable chamber (83), causing the second piston plate (89) to move down, while the hydraulic oil is pre-stored in the interior of the third movable chamber (83), thereby realizing the release of hydraulic pressure and preventing the occurrence of drilling pressure overload. S5: After the work is completed, control the hydraulic system so that the liquid under the third piston plate (813) flows back into the hydraulic system. At the same time, under the action of the first helical spring (78) and the third helical spring (98), the hydraulic oil flows back to the initial position.

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