An automated drilling and milling device for valve plate processing

Abstract

The present invention belongs to the field of valve plate drilling and milling, and specifically relates to an automatic drilling and milling device for valve plate processing, which includes a disc-shaped central table. A fixing table for placing the workpiece to be processed is fixedly connected to the top of the central table. An adjustable disc that can rotate is rotationally clamped on the outside of the central table. Two symmetrically arranged driving motors are arranged on the top surface of the adjustable disc. The output ends of the two driving motors are respectively fixedly connected with a hole-opening drill bit and a hole-reaming drill bit. A lead screw nut mechanism for driving the driving motor to translate is arranged below the driving motor. A vacuum chuck that can be lifted and translated is arranged above the workpiece to be processed, realizing highly automated valve plate drilling work. The handling, fixing, and transferring work of the workpiece to be processed are all operated or assisted by a single vacuum chuck, making the fixing and unfixing processes of the workpiece to be processed fast and convenient.

Description

Technical Field

[0001] The present invention belongs to the field of valve plate drilling and milling, and specifically relates to an automatic drilling and milling device for valve plate processing. Background Art

[0002] Valve plates, also known as valve discs, are various parts and materials used to make valves. Valves are pipeline accessories used to open and close pipelines and control the flow direction, and have functions such as cut-off, regulation, diversion, prevention of backflow, pressure stabilization, flow splitting, or overflow pressure relief.

[0003] There are many types of valves. The butterfly valve, also called a flap valve, is a type of regulating valve with a simple structure and wide use. Its main internal control part is the butterfly disc. The butterfly disc needs to be first made into a circular shape, and then a through hole connected to the control shaft is drilled.

[0004] When traditional valve plates are processed, such as butterfly discs, the valve plate needs to be firmly fixed in a predetermined position, and then through-hole drilling is performed on the valve plate. After drilling, the fixing needs to be released first before transporting the valve plate outwards. The traditional process and device have low automation, and the fixing and releasing of the valve plate often require the cooperation of multiple parts each time. Not only is the operation relatively complex, but most operations also require manual assistance, which is rather inconvenient.

[0005] Therefore, the present invention provides an automatic drilling and milling device for valve plate processing. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: An automatic drilling and milling device for valve plate processing according to the present invention includes a disc-shaped central table. A fixing table for placing the workpiece to be processed is fixedly connected to the top of the central table. An adjustable disc that can rotate is rotationally clamped to the outside of the central table. Two symmetrically arranged driving motors are provided on the top surface of the adjustable disc. The output ends of the two driving motors are respectively fixedly connected with a hole-opening drill bit and a hole-reaming drill bit. A lead screw-nut mechanism for driving the driving motor to translate is provided below the driving motor. A vacuum chuck that can be lifted and translated is provided above the workpiece to be processed.

[0008] Through the setting of the fixed table, the middle part of the top surface of the workpiece to be processed is first adsorbed and fixed by a movable vacuum suction cup, and then the workpiece to be processed is lifted up and translated to the top of the fixed table, and the vacuum suction cup and the workpiece to be processed are lowered together, so that the bottom surface of the workpiece to be processed fits with the fixed table, and at the same time, the vacuum suction cup does not release the negative pressure, and increases the downward pressure to firmly fix the workpiece to be processed on the surface of the fixed table. The surface of the fixed table is provided with a groove that matches the surface shape of the workpiece to be processed to ensure the fixing stability of the workpiece to be processed, and then the drilling process is carried out; first, the drive motor connected to the hole drill is controlled by the lead screw nut mechanism to translate, and the drive motor drives the hole drill to The hole-drilling drill bit rotates and enters the interior of the workpiece to be processed from one end to continuously perform hole-drilling work. During the hole-drilling process, the lead screw and nut mechanism needs to periodically translate the hole-drilling drill bit outward to clean up the iron filings accumulated in the hole and improve the hole-drilling quality. The lengths of the hole-drilling drill bit and the reaming drill bit are both longer than the radius of the workpiece to be processed. After the hole-drilling drill bit has drilled a hole of more than half the length at one end of the workpiece to be processed, the hole-drilling drill bit is withdrawn first, and the adjustment disk is controlled to rotate half a circle. At this time, the hole-drilling drill bit comes to the other side of the workpiece to be processed, and the reaming drill bit comes to the original position of the hole-drilling drill bit. At this time, the two lead screw and nut mechanisms translate simultaneously close to the workpiece to be processed, and the hole-drilling drill bit and the reaming drill bit are The heads rotate at the same time, the drilling drill drills a hole in the workpiece to be processed from the other end, and the reaming drill grinds and reams the position where the hole has been drilled in the workpiece. During the reaming process, the reaming drill also needs to maintain the rhythm of exiting the hole in stages like the drilling drill, so as to clean the iron filings generated by reaming. The moving speed of the reaming drill needs to be lower than the translation speed of the drilling drill. The drilling drill completes the drilling work first, and the two will not touch each other. When the drilling and reaming of one side are completed, rotate the adjusting disk to allow the reaming drill to rotate to the other end to ream the hole that has not been reamed. Finally, the reaming drill exits the workpiece to be processed, and the vacuum suction cup transfers the processed workpiece and puts it A new workpiece to be processed is inserted for the next round of processing; through this setting, a highly automated valve plate drilling work is achieved, and the handling, fixing and transferring of the workpiece to be processed are all operated or assisted by a vacuum suction cup, making the fixing and releasing processes of the workpiece to be processed fast and convenient, and the punching method adopts double-head punching, which not only reduces the length required for the hole-opening drill and the reaming drill, but also improves the drilling stability. When a longer hole-opening drill is used for drilling, the drilling end will not be enough due to the farther driving source; at the same time, the reaming step is added in the hole-opening process, and the efficiency is also improved compared with reaming after all the holes are opened.

[0009] Preferably, the middle part of the bottom surface of the central platform bulges outwards. A base is arranged below the central platform. A support seat is fixedly connected to the top of the base. The support seat is rotationally connected to the convex part at the bottom of the central platform. An electric telescopic rod for adjusting the tilting direction of the central platform is fixedly connected to the top surface of the base. Since the depth of the hole to be drilled is relatively deep, it is necessary to timely discharge the iron filings generated during the drilling process. During the drilling process, the electric telescopic rod jacks upwards, causing the entire adjustment disc and the central platform to tilt, making the hole during the drilling process tilt downwards. In this way, when the drill bit moves outwards from the hole, the internal iron filings can slide out under the action of gravity. The specific solution can be as follows: When drilling half of the hole for the first time, make the hole position of the workpiece to be processed tilt downwards. Then the drilling bit rotates half a circle to drill the other half of the hole. At this time, the reaming bit reams the hole that tilts downwards. Because more iron filings need to be cleaned from the hole during the reaming process, and since the reaming process is a fine grinding process, compared with drilling, more iron filings need to be cleaned during reaming. When the reaming bit rotates to the other side for reaming, since the hole has been penetrated at this time, the generated debris can be directly discharged from the other end, thus ensuring the quality of the hole after reaming.

[0010] Preferably, two symmetrically arranged cooling spray pipes are fixedly connected to the top of the adjustment disc. The output ends of the cooling spray pipes face the drilling end of the workpiece to be processed. Two spray heads are also arranged on the top surface of the central platform. The spray heads are used to spray lubricating oil. To prevent the temperature of the drilling bit from being too high, the cooling spray pipes continuously spray water towards the end of the workpiece to be processed. The water flow contacts the drilling bit, which can effectively reduce the temperature of the drilling bit. At the same time, during the reaming process, an appropriate amount of lubricating oil needs to be applied to the surface of the reaming bit. On the one hand, it can reduce the friction force, lower the temperature of the reaming bit, and at the same time, the applied lubricating oil can also improve the dimensional accuracy and surface quality of the hole, making the processed hole smoother and effectively discharging the chips. It should be noted that after each processing, the surface of the reaming bit needs to be rinsed with cleaning water because some chips will stick to its surface due to the lubricating oil, affecting the next work.

[0011] Preferably, a vertically arranged electric telescopic rod is arranged above the vacuum chuck. The bottom of the electric telescopic rod is rotationally connected to the vacuum chuck through a rotating shaft. An electric slide rail for driving the electric telescopic rod to translate is arranged at the top of the electric telescopic rod. The lifting of the vacuum chuck is controlled by the extension and retraction of the electric telescopic rod, and the left and right translation of the electric telescopic rod and the vacuum chuck is controlled by the electric slide rail. The setting of the rotating shaft enables the workpiece to be processed to be tilted, and the vacuum chuck can also be tilted synchronously, without interfering with the process of pressing down and fixing the workpiece to be processed.

[0012] Preferably, two sinking grooves for installing the lead screw nut mechanism are formed on the top surface of the adjustment disk. The cooling spray pipe is located on one side of the lead screw nut mechanism. The two lead screw nut mechanisms are on the same horizontal line. The forward drilling operation of the two driving motors is controlled by the lead screw nut mechanism. By setting the two lead screw nut mechanisms on the same horizontal line, it is ensured that the drilling process and the reaming process can be carried out synchronously. The position of the cooling spray pipe is on the outer side and will not interfere with the movement of the driving motor.

[0013] Preferably, two symmetrically arranged collecting covers are fixedly connected to the outer side of the top surface of the central table. The height of the collecting cover is lower than the horizontal height of the reaming drill bit and the hole-opening drill bit. The spray head is fixedly connected to the top of the collecting cover and is located directly below the reaming drill bit and the hole-opening drill bit. A transmission pipe connecting to the bottom of the central table is fixedly connected to the bottom of the collecting cover. In order to collect the generated iron chips, two collecting covers are arranged at both ends of the workpiece to be processed. When the workpiece to be processed is inclined to both sides, the collecting cover on the other side will catch the iron chips carried by the cooling water, and the problem of iron chip splashing outside the device will not occur. The spray head is located on the top of the collecting cover and is close to the reaming drill bit, so that the lubricating oil sprayed from the spray head can effectively adhere to the surface of the reaming drill bit.

[0014] Preferably, four binding plates are fixedly connected to the top surface of the central table. The binding plates are arc-shaped. The collecting cover is fixedly connected between two adjacent binding plates. The setting of the binding plates allows the workpiece to be processed placed above the fixed table to be wrapped by the binding plates around. In this way, the up, down, left and right of the workpiece to be processed are restricted, greatly reducing the vibration and deviation caused by drilling and ensuring the drilling quality.

[0015] Preferably, the two hydraulic rods are symmetrically arranged and are respectively distributed below the reaming drill bit and the hole-opening drill bit. A flexible extrusion pad is sleeved on the top of the hydraulic rod. When one side of the hydraulic rod extends and the other side of the hydraulic rod shortens, the central table above can be tilted. After tilting, the two hydraulic rods still maintain support, ensuring the stability of the central table. The flexible extrusion pad can increase the contact area between the top of the hydraulic rod and the central table and improve the support stability.

[0016] Preferably, two spiral hoses one for transmitting lubricating oil are fixedly connected between the top surface of the base and the bottom surface of the central platform, and two spiral hoses two for transmitting cooling water are fixedly connected between the top surface of the base and the bottom surface of the adjustment disk. A docking seat is fixedly connected to the outside of the base. The docking seat is communicated with both the spiral hose one and the spiral hose two, and is communicated with the outside pipeline through the docking seat. Then, the lubricating oil and water are respectively transmitted to the nozzle and the cooling nozzle through the spiral hose one and the spiral hose two. Both the spiral hose one and the spiral hose two can be pulled to a certain extent to adapt to the position changes of the central platform and the adjustment disk. It should be noted that the adjustment disk can only rotate a fixed half turn. After rotating clockwise half a turn, it needs to rotate counterclockwise half a turn. It is not allowed to rotate more than half a turn in the same direction to ensure the normal use of the spiral hose two.

[0017] Preferably, the adjustment disk is annularly arranged. A reduction motor is fixedly connected inside the central platform. Two symmetrically and horizontally arranged transmission gears are rotatably connected to the middle part of the outside of the central platform. The output end of the reduction motor is fixedly connected to one of the transmission gears. A clamping rack is fixedly connected to the inner ring arm of the adjustment disk. The transmission gear meshes with the clamping rack. The reduction motor drives the transmission gear to rotate, and the transmission gear drives the adjustment disk to rotate through the clamping rack, thereby realizing the function of adjusting the positions of the hole-opening drill bit and the reaming drill bit. The setting of the two transmission gears is to ensure the stable rotation of the adjustment disk.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. For the automatic drilling and milling device for valve plate processing of the present invention, through the settings of the fixed platform, vacuum suction cup, hole-opening drill bit and reaming drill bit, the highly automated valve plate drilling work is realized. The handling, fixing and transferring of the workpiece to be processed are all operated or assisted by a vacuum suction cup, making the fixing and unfixing processes of the workpiece to be processed fast and convenient. Moreover, the double-head drilling method is adopted, which not only reduces the lengths required for the hole-opening drill bit and the reaming drill bit, improving the drilling stability. Because when a longer hole-opening drill bit is used for hole opening, the end of the drill hole will be insufficient due to the far driving source. At the same time, the reaming step is added during the hole-opening process, improving the efficiency compared with reaming after all the hole-opening is completed.

[0020] 2. In the automatic drilling and milling device for processing valve plates according to the present invention, the entire adjustment plate and the center table are tilted by the upward push of the electric telescopic rod, so that the holes during the hole-opening process are tilted downward. In this way, when the drill bit moves out of the hole outward, the iron chips inside can slide out under the action of gravity. Specifically, when drilling one half of the hole for the first time, the hole position of the workpiece to be processed is tilted downward. Then, the hole-opening drill bit rotates half a circle to drill the other half of the hole. At this time, the reaming drill bit reams the hole that is tilted downward. Since more iron chips need to be cleaned during the reaming process, and the reaming process is a fine grinding process, compared with hole-opening, more iron chips need to be cleaned during reaming. When the reaming drill bit rotates to the other side for reaming, since the hole has been penetrated at this time, the generated debris can be directly discharged from the other end, thus ensuring the quality of the hole after reaming. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 is a perspective view of the present invention;

[0023] Figure 2 is a perspective view of the adjustment plate of the present invention;

[0024] Figure 3 is a perspective view of the adjustment plate and the center table of the present invention;

[0025] Figure 4 is a perspective view of the base of the present invention;

[0026] Figure 5 is a perspective view of the center table of the present invention;

[0027] In the figure: 1, electric slide rail; 2, electric telescopic rod; 3, vacuum chuck; 4, adjustment plate; 5, workpiece to be processed; 7, rotating shaft; 8, drive motor; 9, lead screw nut mechanism; 10, hole-opening drill bit; 12, restraint plate; 13, base; 14, reaming drill bit; 15, docking seat; 16, cooling spray pipe; 17, center table; 18, sinking groove; 19, collection hood; 20, spray head; 21, fixed table; 23, spiral hose one; 24, spiral hose two; 25, hydraulic rod; 26, support seat; 27, transmission gear; 28, transmission pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0029] Such as Figures 1 to 5As shown in the figure, an automated drilling and milling device for valve plate processing according to an embodiment of the present invention includes a disc-shaped central table 17. A fixing table 21 for placing a workpiece 5 to be processed is fixedly connected to the top of the central table 17. An adjustable disc 4 that can rotate is rotationally clamped to the outside of the central table 17. Two symmetrically arranged drive motors 8 are provided on the top surface of the adjustable disc 4. The output ends of the two drive motors 8 are respectively fixedly connected with a hole-opening drill bit 10 and a reaming drill bit 14. A lead screw nut mechanism 9 for driving the drive motor 8 to move horizontally is provided below the drive motor 8. A vacuum chuck 3 that can be lifted and moved horizontally is provided above the workpiece 5 to be processed;

[0030] Through the setting of the fixed table 21, the middle part of the top surface of the workpiece 5 to be processed is first adsorbed and fixed by the movable vacuum suction cup 3, and then the workpiece 5 to be processed is lifted up and translated to the top of the fixed table 21, and the vacuum suction cup 3 and the workpiece 5 to be processed are lowered together, so that the bottom surface of the workpiece 5 to be processed is in contact with the fixed table 21, and at the same time, the vacuum suction cup 3 does not release the negative pressure, and increases the downward pressure to firmly fix the workpiece 5 to be processed on the surface of the fixed table 21. The surface of the fixed table 21 is provided with a groove adapted to the surface shape of the workpiece 5 to be processed, so as to ensure the fixing stability of the workpiece 5 to be processed, and then the drilling process is carried out; first, the screw nut mechanism 9 is used to control the driving motor 8 connected to the hole drilling bit 10 to translate, and the driving motor 8 drives the hole drilling bit 10 rotates, and the hole-drilling drill bit 10 drills into the interior of the workpiece 5 to be processed from one end to continuously perform the hole-drilling work. During the hole-drilling process, the screw-nut mechanism 9 needs to periodically translate the hole-drilling drill bit 10 outward to clean up the iron filings accumulated in the hole and improve the hole-drilling quality. The lengths of the hole-drilling drill bit 10 and the reaming drill bit 14 are both longer than the radius of the workpiece 5 to be processed. After the hole-drilling drill bit 10 has excavated a hole of more than half the length at one end of the workpiece 5 to be processed, the hole-drilling drill bit 10 is first withdrawn, and the adjusting disk 4 is controlled to rotate half a circle. At this time, the hole-drilling drill bit 10 comes to the other side of the workpiece 5 to be processed, and the reaming drill bit 14 comes to the original position of the hole-drilling drill bit 10. At this time, the two screw-nut mechanisms 9 translate close to the workpiece 5 to be processed at the same time. The drilling bit 10 and the reaming bit 14 rotate simultaneously, the drilling bit 10 performs drilling work on the workpiece 5 to be processed from the other end, and the reaming bit 14 performs grinding and reaming work on the position where the workpiece 5 has been drilled. During the reaming process, the reaming bit 14 also needs to maintain a rhythm of phased withdrawal from the hole like the drilling bit 10, so as to clean up the iron filings generated by reaming. The moving speed of the reaming bit 14 needs to be less than the translation speed of the drilling bit 10. The drilling bit 10 completes the drilling work first, and the two will not touch each other. After the drilling and reaming of one side are completed, the adjusting disk 4 is rotated to allow the reaming bit 14 to rotate to the other end to ream the hole that has not been reamed. Finally, the reaming bit 14 withdraws from the workpiece 5 to be processed, and the vacuum suction cup 3 The processed workpiece is transferred, and a new workpiece 5 to be processed is placed in for the next round of processing; through this arrangement, a highly automated valve plate drilling work is achieved, and the handling, fixing and transferring of the workpiece 5 to be processed are all operated or assisted by a vacuum suction cup 3, so that the fixing and releasing processes of the workpiece 5 to be processed are fast and convenient, and the punching method adopts double-head punching, which not only reduces the required length of the hole-opening drill bit 10 and the reaming drill bit 14, but also improves the drilling stability, because when the longer hole-opening drill bit 10 is used for drilling, the drilling end will not be enough due to the farther driving source; at the same time, the reaming step is added in the hole-opening process, and the efficiency is also improved compared with reaming after all the holes are opened.

[0031] The middle part of the bottom surface of the central platform 17 protrudes outwards. A base 13 is arranged below the central platform 17. A support seat 26 is fixedly connected to the top of the base 13. The support seat 26 is rotationally connected to the protruding part at the bottom of the central platform 17. A hydraulic rod 25 for adjusting the tilting direction of the central platform 17 is fixedly connected to the top surface of the base 13.

[0032] During operation, since the depth of the hole to be drilled is relatively deep, it is necessary to timely discharge the iron filings generated during the drilling process. During the drilling process, by jacking up the hydraulic rod 25, the entire adjustment disc 4 and the central platform 17 are tilted, making the hole during the drilling process tilt downwards. In this way, when the drill bit moves out of the hole, the internal iron filings can slide out under the action of gravity. The specific solution can be that when drilling half of the hole for the first time, the hole position of the workpiece 5 to be processed is tilted downwards. Then the drilling bit 10 rotates half a circle to drill the other half of the hole. At this time, the reaming bit 14 reams the hole that is tilted downwards. Because more iron filings need to be cleaned in the reaming process, and since the reaming process is a fine grinding process, compared with drilling, more iron filings need to be cleaned during reaming. When the reaming bit 14 rotates to the other side for reaming, since the hole has been penetrated at this time, the generated debris can be directly discharged from the other end, thus ensuring the quality of the hole after reaming.

[0033] Two symmetrically arranged cooling nozzles 16 are fixedly connected to the top of the adjustment disc 4. The output end of the cooling nozzle 16 faces the drilling end of the workpiece 5 to be processed. Two nozzles 20 are also arranged on the top surface of the central platform 17. The nozzles 20 are used to spray lubricating oil.

[0034] During operation, in order to prevent the drilling bit 10 from overheating, the cooling nozzle 16 continuously sprays water towards the end of the workpiece 5 to be processed. The water flow contacts the drilling bit 10, which can effectively reduce the temperature of the drilling bit 10. At the same time, during the reaming process, an appropriate amount of lubricating oil needs to be applied to the surface of the reaming bit 14. On the one hand, it can reduce the friction force, reduce the temperature of the reaming bit 14, and at the same time, applying lubricating oil can also improve the dimensional accuracy and surface quality of the hole, making the processed hole smoother, and can also effectively discharge the chips. It should be noted that after each processing is completed, the surface of the reaming bit 14 needs to be rinsed with cleaning water because some chips will stick to its surface due to the lubricating oil, affecting the next operation.

[0035] A vertically arranged electric telescopic rod 2 is arranged above the vacuum chuck 3. The bottom of the electric telescopic rod 2 is rotationally connected to the vacuum chuck 3 through a rotating shaft 7. The top of the electric telescopic rod 2 is provided with an electric slide rail 1 for driving the electric telescopic rod 2 to translate.

[0036] During operation, the lifting of the vacuum suction cup 3 is controlled by the extension and retraction of the electric telescopic rod 2, and the left and right translation of the electric telescopic rod 2 and the vacuum suction cup 3 is controlled by the electric slide rail 1. The setting of the rotating shaft 7 enables the workpiece 5 to be processed to be inclined, and the vacuum suction cup 3 can also be inclined synchronously, without interfering with the process of pressing and fixing the workpiece 5 to be processed.

[0037] On the top surface of the adjustment disc 4, two sinking grooves 18 for installing the lead screw nut mechanism 9 are provided. The cooling spray pipe 16 is located on one side of the lead screw nut mechanism 9, and the two lead screw nut mechanisms 9 are located on the same horizontal line;

[0038] During operation, the forward drilling work of the two driving motors 8 is controlled by the lead screw nut mechanism 9. The two lead screw nut mechanisms 9 are arranged on the same horizontal line, ensuring that the drilling process and the reaming process can be carried out synchronously. The position of the cooling spray pipe 16 is on the outer side and will not interfere with the movement of the driving motor 8.

[0039] On the outer side of the top surface of the center table 17, two symmetrically arranged collection covers 19 are fixedly connected. The height of the collection cover 19 is lower than the horizontal height of the reaming drill bit 14 and the opening drill bit 10. The spray head 20 is fixedly connected to the top of the collection cover 19 and is located directly below the reaming drill bit 14 and the opening drill bit 10. The bottom of the collection cover 19 is fixedly connected with a transmission pipe 28 connected to the bottom of the center table 17;

[0040] During operation, in order to collect the generated iron chips, two collection covers 19 are arranged at both ends of the workpiece 5 to be processed. When the workpiece 5 to be processed is inclined to both sides, the collection cover 19 on the other side will catch the iron chips carried by the cooling water, and there will be no problem of iron chip splashing outside the device. The spray head 20 is located on the top of the collection cover 19 and is close to the reaming drill bit 14, so that the lubricating oil sprayed from the spray head 20 can effectively adhere to the surface of the reaming drill bit 14. The transmission pipe 28 is used to discharge the iron chips downward.

[0041] On the top surface of the center table 17, four restraint plates 12 are fixedly connected. The restraint plates 12 are arc-shaped, and the collection cover 19 is fixedly connected between two adjacent restraint plates 12;

[0042] During operation, the setting of the restraint plates 12 enables the workpiece 5 to be processed placed above the fixed table 21 to be wrapped by the restraint plates 12 on all sides. In this way, the up, down, left, and right of the workpiece 5 to be processed are all restricted, greatly reducing the vibration and deviation caused by drilling and ensuring the quality of drilling.

[0043] The two hydraulic rods 25 are symmetrically arranged, and the two hydraulic rods 25 are respectively distributed below the reaming drill bit 14 and the opening drill bit 10. A flexible extrusion pad is sleeved on the top of the hydraulic rod 25;

[0044] During operation, the hydraulic rod 25 on one side extends, and the hydraulic rod 25 on the other side shortens, which can tilt the upper center platform 17. After tilting, the two hydraulic rods 25 still maintain support, ensuring the stability of the center platform 17. The flexible extrusion pad can increase the contact area between the top of the hydraulic rod 25 and the center platform 17, improving the support stability.

[0045] Two spiral hoses one 23 for transmitting lubricating oil are fixedly connected between the top surface of the base 13 and the bottom surface of the center platform 17. Two spiral hoses two 24 for transmitting cooling water are fixedly connected between the top surface of the base 13 and the bottom surface of the adjustment disc 4. A docking seat 15 is fixedly connected to the outside of the base 13, and the docking seat 15 is communicated with both the spiral hose one 23 and the spiral hose two 24;

[0046] During operation, it is connected to the external pipeline through the docking seat 15, and then the lubricating oil and water are respectively transmitted to the nozzle 20 and the cooling nozzle 16 through the spiral hose one 23 and the spiral hose two 24. Both the spiral hose one 23 and the spiral hose two 24 can be pulled to a certain extent to adapt to the position changes of the center platform 17 and the adjustment disc 4. It should be noted that the adjustment disc 4 can only rotate a fixed half circle. After rotating clockwise half a circle, it needs to rotate counterclockwise half a circle. It is not allowed to rotate more than half a circle in the same direction to maintain the normal use of the spiral hose two 24.

[0047] The adjustment disc 4 is arranged in a ring shape. A reduction motor is fixedly connected inside the center platform 17. Two symmetrically and horizontally arranged transmission gears 27 are rotatably connected to the middle of the outside of the center platform 17. The output end of the reduction motor is fixedly connected to one of the transmission gears 27. A clamping rack is fixedly connected to the inner ring arm of the adjustment disc 4, and the transmission gear 27 meshes with the clamping rack;

[0048] During operation, the reduction motor drives the transmission gear 27 to rotate, and the transmission gear 27 drives the adjustment disc 4 to rotate through the clamping rack, thereby realizing the function of adjusting the positions of the drilling bit 10 and the reaming bit 14. The setting of the two transmission gears 27 is to ensure the stable rotation of the adjustment disc 4.

[0049] During operation, through the setting of the fixed table 21, the middle part of the top surface of the workpiece 5 to be processed is first adsorbed and fixed by the movable vacuum suction cup 3, and then the workpiece 5 to be processed is lifted up and translated to the top of the fixed table 21, and the vacuum suction cup 3 and the workpiece 5 to be processed are lowered together, so that the bottom surface of the workpiece 5 to be processed is in contact with the fixed table 21, and at the same time, the vacuum suction cup 3 does not release the negative pressure, and increases the downward pressure to firmly fix the workpiece 5 to be processed on the surface of the fixed table 21. The surface of the fixed table 21 is provided with a groove that is adapted to the surface shape of the workpiece 5 to be processed, so as to ensure the fixing stability of the workpiece 5 to be processed, and then the drilling process is carried out; first, the screw nut mechanism 9 is used to control the driving motor 8 connected to the hole drill 10 to translate, and the driving motor 8 drives the opening drill 10 The hole drill 10 rotates, and the hole drilling bit 10 drills into the interior of the workpiece 5 to be processed from one end to continuously perform the hole drilling work. During the hole drilling process, the screw nut mechanism 9 needs to periodically translate the hole drilling bit 10 outward to clean up the iron filings accumulated in the hole and improve the hole drilling quality. The lengths of the hole drilling bit 10 and the reaming drill bit 14 are both longer than the radius of the workpiece 5 to be processed. After the hole drilling bit 10 has excavated a hole of more than half the length at one end of the workpiece 5 to be processed, the hole drilling bit 10 is first withdrawn, and the adjustment disk 4 is controlled to rotate half a circle. At this time, the hole drilling bit 10 comes to the other side of the workpiece 5 to be processed, and the reaming drill bit 14 comes to the original position of the hole drilling bit 10. At this time, the two screw nut mechanisms 9 are translated close to the workpiece to be processed at the same time. 5. The drilling drill 10 and the reaming drill 14 rotate simultaneously. The drilling drill 10 performs drilling work on the workpiece 5 to be processed from the other end, and the reaming drill 14 performs grinding and reaming work on the position where the workpiece 5 has been drilled. During the reaming process, the reaming drill 14 also needs to maintain a rhythm of phased withdrawal from the hole like the drilling drill 10 to clean up the iron filings generated by reaming. The moving speed of the reaming drill 14 needs to be less than the translation speed of the drilling drill 10. The drilling drill 10 completes the drilling work first, and the two will not touch each other. After the drilling and reaming of one side are completed, the adjusting disk 4 is rotated to allow the reaming drill 14 to rotate to the other end to ream the hole that has not been reamed. Finally, the reaming drill 14 withdraws from the workpiece 5 to be processed, and the vacuum suction cup 3 transfers the processed workpiece and puts in a new workpiece 5 to be processed for the next round of processing; through this arrangement, a highly automated valve plate drilling work is realized, and the handling, fixing and transferring of the workpiece 5 to be processed are all operated or assisted by a vacuum suction cup 3, so that the fixing and releasing processes of the workpiece 5 to be processed are fast and convenient, and the drilling method adopts double-head drilling, which not only reduces the length required for the hole-opening drill 10 and the reaming drill 14, but also improves the drilling stability, because when the longer hole-opening drill 10 is used for drilling, the drilling end will not be enough due to the distance of the driving source; at the same time, the reaming step is added in the hole-opening process, and the efficiency is also improved compared with reaming after all the holes are opened;

[0050] Since the depth of the hole to be drilled is relatively deep, it is necessary to timely discharge the iron filings generated during the drilling process. During the drilling process, the hydraulic rod 25 jacks up, causing the entire adjustment plate 4 and the center table 17 to tilt, making the hole during the drilling process tilt downward. In this way, when the drill bit moves out of the hole, the internal iron filings can slide out under the action of gravity; specifically, during the first half-drilling, the hole position of the workpiece 5 to be processed is tilted downward, and then the drilling bit 10 rotates half a circle to drill the other half. At this time, the reaming bit 14 reams the hole that is tilted downward. Because more iron filings need to be cleaned during the reaming process, and the reaming process is a fine grinding process, compared with drilling, more iron filings need to be cleaned during reaming. When the reaming bit 14 rotates to the other side for reaming, since the hole has been penetrated at this time, the generated debris can be directly discharged from the other end, thus ensuring the quality of the hole after reaming;

[0051] To prevent the drilling bit 10 from getting too hot, the cooling nozzle 16 continuously sprays water towards the end of the workpiece 5 to be processed. The water flow contacts the drilling bit 10, which can effectively reduce the temperature of the drilling bit 10. At the same time, during the reaming process, an appropriate amount of lubricating oil needs to be applied to the surface of the reaming bit 14. On the one hand, it can reduce the friction force, which can reduce the temperature of the reaming bit 14. At the same time, applying lubricating oil can also improve the dimensional accuracy and surface quality of the hole, making the processed hole smoother, and can also effectively discharge the chips. It should be noted that after each processing, the surface of the reaming bit 14 needs to be rinsed with cleaning water because some chips will stick to its surface due to the lubricating oil, affecting the next work;

[0052] The lifting of the vacuum chuck 3 is controlled by the extension and retraction of the electric telescopic rod 2, and the left and right translation of the electric telescopic rod 2 and the vacuum chuck 3 is controlled by the electric slide rail 1. The setting of the rotating shaft 7 makes the workpiece 5 to be processed inclined, and the vacuum chuck 3 can also be inclined synchronously, without interfering with the process of pressing down and fixing the workpiece 5 to be processed;

[0053] The forward drilling work of the two driving motors 8 is controlled by the lead screw nut mechanism 9. The two lead screw nut mechanisms 9 are arranged on the same horizontal line, ensuring that the drilling process and the reaming process can be carried out synchronously. The position of the cooling nozzle 16 is on the outer side and will not interfere with the movement of the driving motor 8;

[0054] To collect the generated iron filings, two collection covers 19 are arranged at both ends of the workpiece 5 to be processed. When the workpiece 5 to be processed is inclined to both sides, the collection cover 19 on the other side will catch the iron filings carried by the cooling water, without causing the problem of iron filings splashing outside the device. The nozzle 20 is located at the top of the collection cover 19, close to the reaming bit 14, so that the lubricating oil sprayed from the nozzle 20 can effectively adhere to the surface of the reaming bit 14;

[0055] The setting of the restraint plate 12 enables the workpiece 5 to be processed, which is placed above the fixed table 21, to be wrapped around by the restraint plate 12 on all sides. In this way, the up, down, left, and right directions of the workpiece 5 to be processed are restricted, greatly reducing the vibration and deviation caused by drilling and ensuring the quality of drilling.

[0056] When the hydraulic rod 25 on one side extends and the hydraulic rod 25 on the other side shortens, the upper center table 17 can be tilted. After tilting, the two hydraulic rods 25 still maintain support, ensuring the stability of the center table 17. The flexible extrusion pad can increase the contact area between the top of the hydraulic rod 25 and the center table 17, improving the support stability.

[0057] It is connected to the external pipeline through the docking seat 15, and then lubricating oil and water are respectively transmitted to the nozzle 20 and the cooling spray pipe 16 through the first spiral hose 23 and the second spiral hose 24. Both the first spiral hose 23 and the second spiral hose 24 can be stretched to a certain extent to adapt to the position changes of the center table 17 and the adjustment disk 4. It should be noted that the adjustment disk 4 can only rotate a fixed half circle. After rotating clockwise half a circle, it needs to rotate counterclockwise half a circle. It is not allowed to rotate more than half a circle in the same direction to maintain the normal use of the second spiral hose 24.

[0058] The reduction motor drives the transmission gear 27 to rotate, and the transmission gear 27 drives the adjustment disk 4 to rotate through the rack, thereby realizing the function of adjusting the positions of the drilling bit 10 and the reaming bit 14. The setting of the two transmission gears 27 is to ensure the stable rotation of the adjustment disk 4.

[0059] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic drilling and milling device for valve plate processing, characterized in that: It includes a disc-shaped central platform (17), on the top of which a fixing platform (21) for placing the workpiece to be processed (5) is fixedly connected. A rotatable adjusting disc (4) is rotationally clamped outside the central platform (17). On the top surface of the adjusting disc (4), two symmetrically arranged driving motors (8) are provided. The output ends of the two driving motors (8) are respectively fixedly connected with a hole-opening drill bit (10) and a reaming drill bit (14). Below the driving motor (8), a lead screw nut mechanism (9) for driving the driving motor (8) to translate is provided. Above the workpiece to be processed (5), a vacuum chuck (3) that can be lifted and translated is provided; Above the vacuum chuck (3), a vertically arranged electric telescopic rod (2) is provided. The bottom of the electric telescopic rod (2) is rotationally connected to the vacuum chuck (3) through a rotating shaft (7). At the top of the electric telescopic rod (2), an electric slide rail (1) for driving the electric telescopic rod (2) to translate is provided.

2. The automatic drilling and milling device for valve plate processing according to claim 1, wherein: The middle part of the bottom surface of the central platform (17) protrudes outwards. Below the central platform (17), a base (13) is provided. On the top of the base (13), a support seat (26) is fixedly connected. The support seat (26) is rotationally connected to the protruding part at the bottom of the central platform (17). On the top surface of the base (13), a hydraulic rod (25) for adjusting the tilting direction of the central platform (17) is fixedly connected.

3. The automatic drilling and milling device for valve plate processing according to claim 2, characterized in that: On the top of the adjusting disc (4), two symmetrically arranged cooling nozzles (16) are fixedly connected. The output ends of the cooling nozzles (16) face the drilling end of the workpiece to be processed (5). On the top surface of the central platform (17), two spray heads (20) are also provided. The spray heads (20) are used for spraying lubricating oil.

4. The automatic drilling and milling device for valve plate processing according to claim 3, characterized in that: On the top surface of the adjusting disc (4), two sinking grooves (18) for installing the lead screw nut mechanism (9) are opened. The cooling nozzle (16) is located on one side of the lead screw nut mechanism (9). The two lead screw nut mechanisms (9) are on the same horizontal line.

5. The automatic drilling and milling device for valve plate processing according to claim 4, characterized in that: On the outer side of the top surface of the central platform (17), two symmetrically arranged collecting covers (19) are fixedly connected. The height of the collecting covers (19) is lower than the horizontal height of the reaming drill bit (14) and the hole-opening drill bit (10). The spray heads (20) are fixedly connected to the top of the collecting covers (19), and the spray heads (20) are located directly below the reaming drill bit (14) and the hole-opening drill bit (10). The bottom of the collecting covers (19) is fixedly connected with a transmission pipe (28) connected to the bottom of the central platform (17).

6. The automatic drilling and milling device for valve plate machining according to claim 5, characterized in that: On the top surface of the central platform (17), four binding plates (12) are fixedly connected. The binding plates (12) are arc-shaped. The collecting covers (19) are fixedly connected between two adjacent binding plates (12).

7. The automatic drilling and milling device for valve plate processing according to claim 6, wherein: The two hydraulic rods (25) are symmetrically arranged, and the two hydraulic rods (25) are respectively distributed below the reaming drill bit (14) and the hole-opening drill bit (10). The top of the hydraulic rod (25) is sleeved with a flexible extrusion pad.

8. An automatic drilling and milling device for valve plate processing according to claim 7, characterized in that: Two spiral hoses one (23) for transmitting lubricating oil are fixedly connected between the top surface of the base (13) and the bottom surface of the central platform (17). Two spiral hoses two (24) for transmitting cooling water are fixedly connected between the top surface of the base (13) and the bottom surface of the adjustment disk (4). A docking seat (15) is fixedly connected to the outside of the base (13), and the docking seat (15) is communicated with both the spiral hose one (23) and the spiral hose two (24).

9. An automated drilling and milling device for valve plate processing according to claim 8, characterized in that: The adjustment disk (4) is arranged in a ring shape. A reduction motor is fixedly connected inside the central platform (17). Two symmetrically and horizontally arranged transmission gears (27) are rotatably connected to the middle part of the outside of the central platform (17). The output end of the reduction motor is fixedly connected to one of the transmission gears (27). A clamping rack is fixedly connected to the inner ring arm of the adjustment disk (4), and the transmission gear (27) meshes with the clamping rack.

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