High-speed hole drill cooling and lubricating system

Abstract

A high-speed hole drill cooling and lubricating system comprises a machining table, a fixing assembly, a low-speed pre-drilling assembly, a high-speed drilling assembly, a cooling assembly and a lubricating assembly. An adjusting sliding rail is arranged on the machining table, the fixing assembly is installed in the adjusting sliding rail in a clamped mode, a mounting frame is further erected on the machining table, a containing cavity is further formed in the machining table, the low-speed pre-drilling assembly is installed in the containing cavity, the high-speed drilling assembly is installed on the mounting frame, and the high-speed pre-drilling assembly is installed on the mounting frame. The cooling assembly is in pipeline connection with the low-speed pre-drilling assembly and the high-speed drilling assembly. The low-speed pre-drilling assembly, the high-speed drilling assembly and the cooling assembly are designed to be matched for drilling, and the drill bit is provided with an embedded cooling pipe structure, so that cooling liquid can quickly flow in the drill bit to take away heat in the high-speed drilling process; the influence of high temperature generated during high-speed drilling on the service life of the drill bit and the quality of the circuit board is effectively avoided; the utility model has the advantages of strong practicability and strong popularization significance.

Description

Technical Field

[0001] The utility model relates to the field of circuit board processing, in particular to a high-speed hole drilling cooling and lubricating system. Background Art

[0002] A circuit board, also known as a printed circuit board, is an important electronic component, a support for electronic components, and a carrier for the electrical interconnection of electronic components. Since it is made by electronic printing technology, it is called a "printed" circuit board. Almost every electronic device, from small electronic watches and calculators to large computers, communication electronic devices, and military weapon systems, as long as there are electronic components such as integrated circuits, in order to achieve the electrical interconnection between components, a circuit board is used. A circuit board consists of an insulating base plate, connecting wires, and pads for assembling and soldering electronic components, and has the dual functions of conductive circuits and insulating base plates.

[0003] During the production and processing of circuit boards, drilling is often required. When drilling, using a high-speed hole drill is more stable than a low-speed hole drill, and the formed hole position accuracy, quality, etc. are higher. However, when the high-speed rotating drill bit rubs against the circuit board, the generated heat will increase exponentially, and the accumulated heat will cause the temperature of the drill bit to rise suddenly, which not only shortens the service life of the drill bit, but also has an adverse impact on the circuit board. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a high-speed hole drilling cooling and lubricating system in view of the deficiencies in the prior art.

[0005] A high-speed hole drilling cooling and lubricating system includes a processing table, a fixing component, a low-speed pre-drilling component, a high-speed drilling component, a cooling component, and a lubricating component. An adjustment slide rail is provided on the processing table, the fixing component is snap-fitted in the adjustment slide rail and can slide left and right. An installation frame is also erected on the processing table, and a receiving cavity is provided in the processing table. A pre-drilling through hole communicating with the outside is provided at the upper end of the receiving cavity. The low-speed pre-drilling component is installed in the receiving cavity and corresponds to the pre-drilling through hole up and down. The high-speed drilling component is installed on the installation frame and corresponds to the pre-drilling through hole up and down. The cooling component is connected to the low-speed pre-drilling component and the high-speed drilling component through pipelines respectively. The lubricating component is installed on the processing table and is located between the low-speed pre-drilling component and the high-speed drilling component.

[0006] The low-speed pre-drilling component includes a first lifting cylinder, a first cooling pipe, and a low-speed drill bit. The first lifting cylinder is installed at the bottom of the receiving cavity. The first cooling pipe and the low-speed drill bit are both installed at the upper end of the first lifting cylinder, and both the first cooling pipe and the low-speed drill bit are designed as hollow pipe bodies that penetrate up and down. The low-speed drill bit is sleeved outside the first cooling pipe and can rotate actively.

[0007] The high-speed drilling assembly includes a second lifting cylinder, a second cooling pipe, and a high-speed drill bit. The second lifting cylinder is installed on the mounting frame. The second cooling pipe and the high-speed drill bit are both installed at the lower end of the second lifting cylinder, and both the second cooling pipe and the high-speed drill bit are designed as hollow pipe bodies that penetrate up and down. The high-speed drill bit is sleeved outside the second cooling pipe and can rotate actively.

[0008] The cooling assembly includes a high-pressure liquid pump, a refrigerator, and a coolant storage tank that are connected in sequence by pipelines. The high-pressure liquid pump is also connected to the first cooling pipe by a pipeline, and the coolant storage tank is also connected to the second cooling pipe by a pipeline.

[0009] Further, the low-speed pre-drilling assembly further includes a first contact sensor and a first solenoid valve. The high-speed drilling assembly further includes a second contact sensor and a second solenoid valve. The first contact sensor is installed at the upper end of the first cooling pipe, and the first solenoid valve is installed inside the upper end of the first cooling pipe and is signal-connected to the first contact sensor. The second contact sensor is installed at the lower end of the second cooling pipe, and the second solenoid valve is installed inside the lower end of the second cooling pipe and is signal-connected to the second contact sensor.

[0010] Further, the fixing assembly includes a fixing frame, a sliding nut, a fixing screw, and a fixing block. The two ends of the fixing frame are respectively clamped in the adjusting slide rails and can be adjusted left and right. The fixing frame is also provided with a sliding through hole that penetrates up and down. The sliding nut is clamped in the sliding through hole and can be adjusted back and forth. The fixing screw is inserted into the sliding nut and can be screwed up and down. The fixing block is installed at the lower end of the fixing screw.

[0011] Further, the lubrication assembly includes a third lifting cylinder, a lubrication frame, a first lubrication drum, and a second lubrication drum. The third lifting cylinder is installed on the processing table. The lubrication frame is installed on the third lifting cylinder and can move up and down. The first lubrication drum is installed on the lubrication frame and corresponds to the high-speed drilling assembly up and down. The high-speed drill bit can pass through the first lubrication drum from top to bottom. The second lubrication drum is installed at the upper part of the accommodating cavity and corresponds to the low-speed pre-drilling assembly up and down. The low-speed drill bit can pass through the second lubrication drum from bottom to top.

[0012] Further, the first lubrication drum includes a first drum body, a first mounting ring, and a plurality of first lubricating oil nozzles. The first drum body is clamped on the lubrication frame. It has a first lubricating cavity inside, and a first lubricating through hole that penetrates up and down in the middle. The first lubricating through hole is communicated with the first lubricating cavity. The high-speed drill bit can pass through the first drum body along the first lubricating through hole. The first mounting ring is installed in the first lubricating cavity and can rotate actively. A plurality of the first lubricating oil nozzles are evenly installed on the inner side of the first mounting ring.

[0013] Further, the second lubricating drum includes a second drum body, a second mounting ring, and a plurality of second lubricating oil nozzles. The second drum body is snap-fitted on the lubricating frame, and a second lubricating cavity is provided inside it. A second lubricating through hole penetrating up and down is provided in the middle, and the second lubricating through hole is communicated with the second lubricating cavity. The low-speed drill bit can pass through the second drum body along the second lubricating through hole. The second mounting ring is installed in the second lubricating cavity and can rotate movably, and a plurality of the second lubricating oil nozzles are uniformly installed on the inner side of the second mounting ring.

[0014] Furthermore, an adjusting telescopic rod is also provided on the lubricating frame, and engaging blocks are also provided on both sides of the first drum body. The adjusting telescopic rod can be adjusted to expand and contract. One end of it is fixedly installed on the lubricating frame, and the other end abuts and engages with the engaging blocks. Balancing sliding holes are also provided on both sides of the lubricating frame, and corresponding balancing sliding rods are provided on the inner side of the mounting frame. The lubricating frame passes through the balancing sliding rods along the balancing sliding holes and can slide up and down.

[0015] In summary, the beneficial effects of the high-speed hole drilling cooling and lubrication system of the present utility model are as follows: By designing the low-speed pre-drilling assembly, the high-speed drilling assembly, and the cooling assembly to cooperate in drilling, and the drill bits are all provided with an embedded cooling pipe structure, so that the coolant can flow rapidly in the drill bit during high-speed drilling to take away heat, effectively avoiding the influence of the high temperature generated during high-speed drilling on the service life of the drill bit and the quality of the circuit board; The adjustable fixing assembly can fix circuit boards of different specifications for drilling processing, greatly improving the applicable range of the equipment; The lubricating assembly can fully lubricate the drill bit, making the high-speed drilling processing of the circuit board more reliable; The present utility model has strong practicability and has strong popularization significance. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a high-speed hole drilling cooling and lubrication system of the present utility model;

[0017] Figure 2 is Figure 1 the exploded structural diagram of

[0018] Figure 3 is Figure 2 the exploded structural diagram of the processing table in

[0019] Figure 4 is Figure 2 the exploded structural diagram of the fixing assembly in

[0020] Figure 5 is Figure 2 the exploded structural diagram of the drilling assembly in

[0021] Figure 6 is Figure 2 the exploded structural diagram of the magnetic balancing assembly in

[0022] Figure 7 is Figure 2 a schematic exploded view of the elastic balance component in Specific Embodiments

[0023] In order to make the objectives, technical solutions and advantages of the utility model more clear and understandable, the following further details the utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0024] As Figures 1 to 7 shown, the utility model provides a high-speed hole drilling cooling and lubrication system, which includes a processing table, a fixing component, a low-speed pre-drilling component, a high-speed drilling component, a cooling component and a lubrication component.

[0025] An adjustment slide rail is provided on the processing table. The fixing component is snap-fitted in the adjustment slide rail and can slide left and right. An installation frame is also erected on the processing table, and a receiving cavity is further provided in the processing table. A pre-drilling through hole communicating with the outside is provided at the upper end of the receiving cavity. The low-speed pre-drilling component is installed in the receiving cavity and corresponds to the pre-drilling through hole up and down. The high-speed drilling component is installed on the installation frame and corresponds to the pre-drilling through hole up and down. The cooling component is respectively connected to the low-speed pre-drilling component and the high-speed drilling component through pipelines. The lubrication component is installed on the processing table and is located between the low-speed pre-drilling component and the high-speed drilling component. It can be understood that there are also various driving structures, sensing structures, power supply and gas supply structures and control systems in the utility model. Since they are all conventional technical contents in this technical field, they will not be described in detail here.

[0026] The fixing component includes a fixing frame, a sliding nut, a fixing screw and a fixing pressure block. The two ends of the fixing frame are respectively snap-fitted in the adjustment slide rail and can be adjusted and slid left and right. A sliding through hole penetrating up and down is further provided on the fixing frame. The sliding nut is snap-fitted in the sliding through hole and can be adjusted and slid back and forth. The fixing screw is penetrated through the sliding nut and can be screwed up and down. The fixing pressure block is installed at the lower end of the fixing screw. The fixing frame that can slide left and right along the adjustment slide rail and the sliding nut that can slide back and forth along the sliding through hole enable the fixing pressure block to freely adjust its position in the front, back, left and right directions, so as to realize the fixing of circuit boards of different sizes and specifications.

[0027] The low-speed pre-drilling component includes a first lifting cylinder, a first cooling pipe and a low-speed drill bit. The first lifting cylinder is installed at the bottom of the receiving cavity. The first cooling pipe and the low-speed drill bit are both installed at the upper end of the first lifting cylinder, and both the first cooling pipe and the low-speed drill bit are designed as hollow pipe bodies penetrating up and down. The low-speed drill bit is sleeved outside the first cooling pipe and can rotate actively.

[0028] When circuit board drilling is required, first fix the circuit board on the processing table, then start the low-speed pre-drilling component. Use a small-diameter drill bit with a low rotational speed to pre-drill a through-hole in the circuit board from bottom to top, and keep the drill bit passing through the circuit board. During the pre-drilling process, due to the low rotational speed of the drill bit, there is no need to worry about the drill bit overheating, nor is it necessary to control the stability of the drill bit.

[0029] The high-speed drilling component includes a second lifting cylinder, a second cooling pipe, and a high-speed drill bit. The second lifting cylinder is installed on the mounting frame. The second cooling pipe and the high-speed drill bit are both installed at the lower end of the second lifting cylinder, and both the second cooling pipe and the high-speed drill bit are designed as hollow pipe bodies that penetrate up and down. Among them, the high-speed drill bit is sleeved outside the second cooling pipe and can rotate actively.

[0030] After the pre-drilling process is completed, start the high-speed drilling component. First, the second lifting cylinder drives the second cooling pipe and the high-speed drill bit to descend until they respectively abut and connect with the first cooling pipe and the low-speed drill bit. Then, make the high-speed drill bit rotate at a high rotational speed and drill the circuit board from top to bottom. The drill bit with a high rotational speed is extremely likely to overheat due to friction with the circuit board, but the abutting-connected first cooling pipe and second cooling pipe can take away heat by pumping the coolant to flow, so as to achieve the effect of quickly cooling the drill bit.

[0031] The cooling component includes a high-pressure liquid pump, a refrigerator, and a coolant storage tank that are connected in sequence through pipelines. Among them, the high-pressure liquid pump is also connected to the first cooling pipe through a pipeline, and the coolant storage tank is also connected to the second cooling pipe through a pipeline. The high-pressure liquid pump can continuously pump the coolant to flow through the first cooling pipe and the second cooling pipe. The coolant flowing at a high speed can quickly absorb heat to cool the drill bit. The coolant that has absorbed heat and increased in temperature flows back into the coolant storage tank and is cooled by the refrigerator and then supplied to the high-pressure liquid pump again. The cooling component working in a cycle can ensure that the drill bit will not overheat during the high-speed drilling process.

[0032] The low-speed pre-drilling component further includes a first contact sensor and a first solenoid valve. The high-speed drilling component further includes a second contact sensor and a second solenoid valve. The first contact sensor is installed at the upper end of the first cooling pipe. The first solenoid valve is installed inside the upper end of the first cooling pipe, and this first solenoid valve is signal-connected to the first contact sensor. The second contact sensor is installed at the lower end of the second cooling pipe. The second solenoid valve is installed inside the lower end of the second cooling pipe, and this second solenoid valve is signal-connected to the second contact sensor.

[0033] After pre-drilling is completed, when the high-speed drilling assembly begins to descend and abuts against the low-speed pre-drilling assembly, the first contact sensor and the second contact sensor will detect the connection status of the first cooling pipe and the second cooling pipe. When the two sets of cooling pipes are abutted against each other, the contact sensor will send a signal to control the opening of each solenoid valve so that the coolant can flow in the cooling pipe; and when the two sets of cooling pipes are separated from each other after the drilling process is completed, the contact sensor will control the closing of each solenoid valve to prevent a large amount of coolant in the pipe from leaking.

[0034] The lubrication assembly includes a third lifting cylinder, a lubrication rack, a first lubrication drum and a second lubrication drum. The third lifting cylinder is installed on the processing table, the lubrication rack is installed on the third lifting cylinder and can be movably lifted and lowered, the first lubrication drum is installed on the lubrication rack and corresponds to the high-speed drilling assembly up and down, the high-speed drill can pass through the first lubrication drum from top to bottom, the second lubrication drum is installed on the upper part of the accommodating cavity and corresponds to the low-speed pre-drilling assembly up and down, the low-speed drill can pass through the second lubrication drum from bottom to top. The adjustable lifting lubrication rack can correspond to circuit boards of different thicknesses, avoiding the problem of lubricating oil splashing due to the large distance between the first lubrication drum and the upper surface of the circuit board.

[0035] The first lubrication drum includes a first drum body, a first mounting ring, and a plurality of first lubricating oil nozzles. The first drum body is mounted on the lubrication rack in a snap-fitting manner, and a first lubricating cavity is provided inside the drum body, and a first lubricating through hole is provided in the middle thereof, which is connected to the first lubricating cavity, and the high-speed drill can pass through the first drum body along the first lubricating through hole. The first mounting ring is mounted in the first lubricating cavity and can be movably rotated, and a plurality of the first lubricating oil nozzles are evenly mounted on the inner side of the first mounting ring.

[0036] The second lubrication drum includes a second drum body, a second mounting ring and a plurality of second lubricating oil nozzles. The second drum body is mounted on the lubrication rack in a snap-fitting manner, and a second lubricating cavity is provided inside the drum body, and a second lubricating through hole is provided in the middle thereof, which is connected to the second lubricating cavity, and the low-speed drill can pass through the second drum body along the second lubricating through hole. The second mounting ring is mounted in the second lubricating cavity and can be movably rotated, and a plurality of the second lubricating oil nozzles are evenly mounted on the inner side of the second mounting ring.

[0037] The lubrication rack is also provided with an adjustable telescopic rod, and the first drum body is also provided with a clamping block on both sides. The adjustable telescopic rod can be adjusted and extended, and one end of the adjustable telescopic rod is fixedly mounted on the lubrication rack, and the other end is mutually abutted and clamped with the clamping block. The lubrication rack is also provided with a balancing slide hole on both sides, and a balancing slide bar is correspondingly provided on the inner side of the mounting rack. The lubrication rack is passed through the balancing slide bar along the balancing slide hole and can slide up and down.

[0038] In summary, the beneficial effects of the high-speed hole drilling cooling and lubrication system of the present utility model are as follows: By designing a low-speed pre-drilling component, a high-speed drilling component and a cooling component to cooperate with the drilling, and the drill bits are all provided with an embedded cooling pipe structure, so that the coolant can flow rapidly in the drill bit to take away heat during the high-speed drilling process, effectively avoiding the influence of the high temperature generated during the high-speed drilling on the service life of the drill bit and the quality of the circuit board; The adjustable fixing component can fix circuit boards of different specifications for drilling processing, greatly improving the applicable range of the equipment; The lubricating component can fully lubricate the drill bit, making the high-speed drilling processing of the circuit board more reliable; The present utility model has strong practicability and has strong promotion significance.

[0039] The above-described embodiments only represent one implementation manner of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A high-speed hole drilling cooling and lubrication system, characterized in that: It includes a processing table, a fixing component, a low-speed pre-drilling component, a high-speed drilling component, a cooling component and a lubrication component; the processing table is provided with an adjustment slide rail, the fixing component is mounted in the adjustment slide rail and can slide left and right, the processing table is also provided with a mounting frame, and the processing table is also provided with a accommodating cavity, the upper end of the accommodating cavity is provided with a pre-drilled through hole communicating with the outside, the low-speed pre-drilling component is installed in the accommodating cavity and corresponds to the pre-drilled through hole up and down, the high-speed drilling component is installed on the mounting frame and corresponds to the pre-drilled through hole up and down, the cooling component is respectively connected to the low-speed pre-drilling component and the high-speed drilling component pipeline, the lubrication component is installed on the processing table and is located between the low-speed pre-drilling component and the high-speed drilling component; The low-speed pre-drilling assembly includes a first lifting cylinder, a first cooling tube and a low-speed drill bit, wherein the first lifting cylinder is installed at the bottom of the accommodating cavity, the first cooling tube and the low-speed drill bit are both installed at the upper end of the first lifting cylinder, and the first cooling tube and the low-speed drill bit are both designed as a hollow tube body penetrating from top to bottom, wherein the low-speed drill bit is sleeved outside the first cooling tube and can be movably rotated; The high-speed drilling assembly includes a second lifting cylinder, a second cooling pipe and a high-speed drill bit, wherein the second lifting cylinder is mounted on a mounting frame, the second cooling pipe and the high-speed drill bit are both mounted at the lower end of the second lifting cylinder, and the second cooling pipe and the high-speed drill bit are both designed as a hollow tube body penetrating from top to bottom, wherein the high-speed drill bit is sleeved outside the second cooling pipe and can be rotatable; The cooling assembly includes a high-pressure liquid pump, a refrigerator and a coolant storage tank which are connected in sequence through pipelines, wherein the high-pressure liquid pump is also connected to a first cooling pipe pipeline, and the coolant storage tank is also connected to a second cooling pipe pipeline.

2. The high-speed hole drilling cooling and lubrication system according to claim 1, characterized in that: The low-speed pre-drilling component also includes a first contact sensor and a first solenoid valve, and the high-speed drilling component also includes a second contact sensor and a second solenoid valve; the first contact sensor is installed at the upper end of the first cooling tube, the first solenoid valve is installed on the inner side of the upper end of the first cooling tube, and the first solenoid valve is connected to the first contact sensor signal; the second contact sensor is installed at the lower end of the second cooling tube, the second solenoid valve is installed on the inner side of the lower end of the second cooling tube, and the second solenoid valve is connected to the second contact sensor signal.

3. The high-speed hole drilling cooling and lubrication system according to claim 1, characterized in that: The fixing assembly includes a fixing frame, a sliding nut, a fixing screw and a fixing pressure block; the two ends of the fixing frame are respectively engaged in the adjusting slide rails and can be adjusted to slide left and right, the fixing frame is also provided with a sliding through hole running through from top to bottom, the sliding nut is engaged and installed in the sliding through hole and can be adjusted to slide forward and backward, the fixing screw is passed through the sliding nut and can be spirally lifted and lowered, and the fixing pressure block is installed at the lower end of the fixing screw.

4. The high-speed hole drilling cooling and lubrication system according to claim 1, characterized in that: The lubrication assembly includes a third lifting cylinder, a lubrication rack, a first lubrication drum and a second lubrication drum; the third lifting cylinder is installed on the processing table, the lubrication rack is installed on the third lifting cylinder and can be movably lifted and lowered, the first lubrication drum is installed on the lubrication rack and corresponds to the high-speed drilling assembly up and down, the high-speed drill bit can pass through the first lubrication drum from top to bottom, the second lubrication drum is installed on the upper part of the accommodating cavity and corresponds to the low-speed pre-drilling assembly up and down, and the low-speed drill bit can pass through the second lubrication drum from bottom to top.

5. The high-speed hole drilling cooling and lubrication system according to claim 4, characterized in that: The first lubrication drum comprises a first drum body, a first mounting ring and a plurality of first lubricating oil nozzles; the first drum body is mounted on the lubrication rack in a snap-fitting manner, a first lubrication cavity is arranged inside the first drum body, and a first lubrication through hole is arranged in the middle thereof which passes through the first drum body from top to bottom, the first lubrication through hole is connected to the first lubrication cavity, and the high-speed drill bit can pass through the first drum body along the first lubrication through hole; the first mounting ring is mounted in the first lubrication cavity and can be movably rotated, and a plurality of the first lubrication oil nozzles are evenly mounted on the inner side of the first mounting ring.

6. The high-speed hole drilling cooling and lubrication system according to claim 4, characterized in that: The second lubrication drum comprises a second drum body, a second mounting ring and a plurality of second lubricating oil nozzles; the second drum body is mounted on the lubrication rack in a snap-fitting manner, a second lubrication cavity is arranged inside the second drum body, and a second lubrication through hole is arranged in the middle thereof which passes through the second lubrication cavity from top to bottom, the second lubrication through hole is communicated with the second lubrication cavity, and the low-speed drill bit can pass through the second drum body along the second lubrication through hole; the second mounting ring is mounted in the second lubrication cavity and can be movably rotated, and a plurality of the second lubrication oil nozzles are evenly mounted on the inner side of the second mounting ring.

7. The high-speed hole drilling cooling and lubrication system according to claim 5, characterized in that: The lubrication rack is also provided with an adjustable telescopic rod, and both sides of the first drum body are provided with engaging blocks. The adjustable telescopic rod can be adjusted and extended, and one end of the adjustable telescopic rod is fixedly mounted on the lubrication rack, and the other end is abutted and engaged with the engaging block. Both sides of the lubrication rack are also provided with balancing sliding holes, and the inner side of the mounting rack is correspondingly provided with a balancing sliding rod. The lubrication rack is penetrated on the balancing sliding rod along the balancing sliding holes and can slide up and down.

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