Automatic indexing flange drilling equipment for large-diameter valves

Abstract

The present application relates to the technical field of valve drilling, and discloses a large-diameter valve automatic indexing flange plate drilling equipment, which comprises a base, a cross beam stand fixedly installed above the base, an X-axis platform arranged above the cross beam stand, a Z-axis platform slidingly arranged on one side of the X-axis platform, a drilling machine fixedly arranged on the Z-axis platform, a rotary workbench driven by a servo motor arranged above the base, a valve arranged above the rotary workbench, and a brake system arranged on the outer side of the rotary workbench. The equipment further comprises a clamping part arranged above the base. The first telescopic plate is matched with the mounting seat, the extension plate and the mounting seat are matched with the valve, the extension plate is pushed out from the inside of the mounting seat, the extension plate extends to the upper surface of the valve to adsorb the drilling debris on the valve, and the cleanliness of the valve hole is improved.

Description

Technical Field

[0001] This invention relates to the field of valve drilling technology, specifically to an automatic indexing flange drilling device for large-diameter valves. Background Technology

[0002] The drilling of large-diameter valves requires high precision, efficiency, and automation. Traditional manual or semi-automatic equipment suffers from problems such as large positioning errors and low production efficiency. Automatic indexing flange drilling equipment integrates mechanical, electrical, CNC systems and intelligent indexing technology to achieve high-precision drilling of large-diameter valves. It is widely used in valve manufacturing in petrochemical, power, metallurgical and other fields.

[0003] During the drilling process of large-diameter valves, certain defects often occur. For example, large-diameter valves are heavy, and there are many burrs on the valve surface during drilling, which may even remain inside the hole. Manual intervention is difficult to handle in time, and the valves are prone to vibration when the clamping is not stable, resulting in rough hole walls, poor hole diameter, or broken cutting tools. These issues may affect the stability of the valve and the machining accuracy. Summary of the Invention

[0004] This invention provides an automatic indexing flange drilling device for large-diameter valves. It reduces vibration during drilling by using the clamping force applied to the inner and outer diameters of the valve. The device also adjusts the required height of the valve in a timely manner according to the clamping force, and simultaneously triggers the adsorption component to adsorb burrs on the valve surface, thereby improving stability and avoiding secondary contamination, thus promoting fine machining.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] In a first aspect, an automatic indexing flange drilling device for large-diameter valves includes a base and a crossbeam column fixedly installed above the base. An X-axis platform is positioned above the crossbeam column, and a Z-axis platform is slidably mounted on one side of the X-axis platform. A drilling machine is fixed on the Z-axis platform. A rotary table driven by a servo motor is positioned above the base, and a valve is positioned above the rotary table. The rotary table supports the valve's rotation for indexing flange drilling. A braking system is provided on the outer side of the rotary table. The device also includes:

[0007] The clamping part is located above the base and outside the rotary table to clamp the valve;

[0008] The clamping part includes a clamping member and a lowering member. The clamping member is disposed above the valve and connected to the base. The clamping member is connected to the lowering member, and the lowering member is disposed on the inner wall of the clamping member.

[0009] The chip removal section is located above the valve and on the inner wall of the valve to clean up debris after drilling the valve.

[0010] The chip removal unit includes an adsorption component and a storage component. The adsorption component is disposed above the valve, and the general-purpose component is disposed on the inner wall of the valve. The storage component is connected to the adsorption component.

[0011] A circulation component, located outside the valve and connected to the chip removal unit, is used to recover burrs.

[0012] The circulation component includes an air outlet and a driving component. The air outlet is located on one side of the receiving component and is connected to the driving component. The driving component is located outside the air outlet.

[0013] Furthermore, the clamping member includes:

[0014] The electric rod has three parts, which are symmetrically arranged above the base and surround the valve. The base has three first motors symmetrically arranged around the rotating worktable and drive vertically upward.

[0015] An electric pole is fixed to the drive end of the first motor;

[0016] An electric telescopic plate is installed above the electric pole.

[0017] The horizontal strip is slidably connected to the inner wall of the electric telescopic plate;

[0018] The clamping plate has two parts, one fixed below the electric telescopic plate and the other fixed to the crossbar plate.

[0019] Furthermore, the lowering member includes:

[0020] A fixed arc plate is installed on the inner wall of one side of the clamping plate;

[0021] The upright plate is fixed below the fixed arc plate;

[0022] Furthermore, the lowering member also includes:

[0023] The rotating shaft is located on the outside of the upright plate.

[0024] Furthermore, the lowering member also includes:

[0025] The sealed top cover is rotatably mounted on the outside of the rotating shaft and in contact with the inside of the upright plate;

[0026] The lower sealing cover is located on the outside of the rotating shaft and matches the upper sealing cover;

[0027] Storage tubes are fixedly installed at the bottom of the upright plate.

[0028] Furthermore, the adsorption element includes:

[0029] An electric rotating shaft is located on the outside of the crossbeam column, with a direct drive motor at one end and connected to the output end of the direct drive motor.

[0030] The lower sealing cover is located below the upper sealing cover and can be sealed together with the upper sealing cover.

[0031] The first telescopic plate is located on the outside of the electric rotating shaft;

[0032] The mounting base is located on one side of the electric rotating shaft and below the first telescopic plate;

[0033] An extension plate is installed on the inside of the mounting base;

[0034] Multiple suction strips are fixedly installed below the extension plate;

[0035] The locking component is located on the inner wall of the mounting base.

[0036] Furthermore, the locking component includes:

[0037] A ring-shaped strip is installed on the inner wall of the mounting base;

[0038] The plug-in rod is located above the annular strip.

[0039] The elastic strip is movably installed above the plug rod and runs through the inner wall of the mounting base;

[0040] The lower surface of the mounting base is provided with multiple slots that mate with the elastic strip, so that the elastic strip can be inserted for positioning;

[0041] A positioning lock hole is provided on one side of the mounting base;

[0042] The locking bar is fixedly installed on one side of the mounting base and engages with the positioning locking hole on the other side of the mounting base;

[0043] Furthermore, the storage component includes:

[0044] The recycling block is fixedly installed on the inner wall of the mounting base;

[0045] Pipeline 2 has three sections, symmetrically arranged on the outside of the recycling block;

[0046] A three-way valve is fixedly installed above pipe two, and a control valve is installed above it;

[0047] Pipe 1 is fixedly installed on one side of the three-way valve;

[0048] The fan is positioned above the main shaft;

[0049] The air intake pipe is located on the outside of the storage pipe;

[0050] A through groove is provided between the placement seat and the recycling block.

[0051] Furthermore, the air outlet component includes:

[0052] A vacuum chamber is located inside the mounting base;

[0053] The nozzles are multiple and are mounted on the outside of the vacuum bladder, and can be used with the extension plate.

[0054] Furthermore, the driving element includes:

[0055] The main shaft is rotated at the center of the valve.

[0056] The bottom end of the main shaft is connected to a second motor and is connected to the drive end of the second motor;

[0057] The second telescopic plate is fixedly installed on the outside of the main shaft.

[0058] The above-described solution of the present invention has at least the following beneficial effects:

[0059] The present invention discloses an automatic indexing flange drilling device for large-diameter valves. Through the cooperation of a first telescopic plate and a mounting seat, and then through the cooperation of an extension plate and the mounting seat with the valve, the extension plate is pushed out from inside the mounting seat, so that the extension plate extends to the upper surface of the valve. The extension plate extends to the upper surface of the valve to adsorb drilling debris on the valve, thereby improving the cleaning effect of the valve hole. Attached Figure Description

[0060] The invention will now be further described with reference to the accompanying drawings.

[0061] Figure 1 This is a schematic diagram of the overall three-dimensional structure provided in an embodiment of the present invention;

[0062] Figure 2 A three-dimensional structural diagram of the X-axis platform, Z-axis platform, and valve assembly provided in an embodiment of the present invention;

[0063] Figure 3 An exploded perspective view of the combination of the horizontal bar, electric rod, and valve provided in an embodiment of the present invention;

[0064] Figure 4 This is an exploded view of the combination of the rotating worktable and the crossbar plate of the present invention;

[0065] Figure 5 This is a schematic diagram of the combined structure of the clamping plate, the fixing arc plate, and the crossbar plate of the present invention;

[0066] Figure 6 This is an exploded view of the toggle plate and its engagement in this invention;

[0067] Figure 7 This is the present invention. Figure 6 Enlarged schematic diagram of a local structure at point A;

[0068] Figure 8 This is the present invention. Figure 6 Enlarged schematic diagram of the local structure at point D;

[0069] Figure 9 This is a schematic diagram of the strip structure of the pipe, vacuum bladder, and mounting base of the present invention;

[0070] Figure 10 This is a schematic diagram of the thin strip structure of the toggle plate and the mounting base of the present invention;

[0071] Figure 11 This is an exploded schematic diagram of the combined structure of the vacuum bag, ring plate and nozzle of the present invention;

[0072] Figure 12 This is an exploded view of the assembly of the mounting base and the recycling block of the present invention;

[0073] Figure 13 This is the present invention. Figure 12 Enlarged schematic diagram of the local structure at point B;

[0074] Figure 14 This is a schematic diagram of the base and the rotating worktable of the present invention.

[0075] In the diagram: 1. Base; 11. Electric rod; 12. Horizontal bar; 13. Electric telescopic plate; 15. Clamping plate; 16. Fixed arc plate; 17. Vertical plate; 18. Rotating shaft; 19. Sealed upper cover; 20. Sealed lower cover; 21. Storage tube; 3. Horizontal beam column; 30. Main shaft; 300. Second telescopic plate; 301. Annular bar; 302. Insert rod; 303. Locking bar; 304. Elastic bar; 311. Electric rotating shaft; 321. Pipe 1; 322. Pipe 2; 323. Three-way valve; 324. Fan; 325. Air inlet pipe; 31. First telescopic plate; 32. Recycling block; 33. Seat; 34. Extension plate; 35. Suction strip; 36. Vacuum bag; 38. Nozzle; 4. X-axis platform; 5. Z-axis platform; 6. Drilling machine; 7. Rotary worktable; 8. Braking system; 9. Valve. Detailed Implementation

[0076] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0077] like Figures 1 to 14As shown, an automatic indexing flange drilling device for large-diameter valves includes a base 1 and a crossbeam column 3 fixedly installed above the base 1. An X-axis platform 4 is arranged above the crossbeam column 3, and a Z-axis platform 5 is slidably arranged on one side of the X-axis platform 4. A drilling machine 6 is fixed on the Z-axis platform 5. A rotary table 7 driven by a servo motor is arranged above the base 1, and a valve 9 is arranged above the rotary table 7. The rotary table 7 supports the rotation of the valve 9 for indexing flange drilling. A braking system 8 is arranged on the outside of the rotary table 7. The device also includes:

[0078] The clamping part is located above the base 1 and outside the rotary table 7 to clamp the valve 9;

[0079] The clamping part includes a clamping member and a lowering member. The clamping member is disposed above the valve 9 and connected to the base 1. The clamping member is connected to the lowering member, and the lowering member is disposed on the inner wall of the clamping member.

[0080] The chip removal section is located above valve 9 and on the inner wall of valve 9 to clean up debris after drilling of valve 9;

[0081] The chip removal unit includes an adsorption component and a storage component. The adsorption component is located above the valve 9, the general-purpose component is located on the inner wall of the valve 9, and the storage component is connected to the adsorption component.

[0082] A circulation component is located outside valve 9 and connected to the chip removal section to recover burrs;

[0083] The circulation component includes an air outlet and a drive component. The air outlet is located on one side of the storage component and is connected to the drive component, which is located outside the air outlet.

[0084] When drilling is required on valve 9 during operation, using this embodiment of the invention, firstly, by operating the CNC system interface and setting it to low speed and constant feed, the clamping component is rotated to the outside of valve 9, and valve 9 is placed above the rotary table 7. Then, the suction component is extended to the inner diameter of valve 9. The rotary table 7 supports and rotates valve 9. The inner and outer diameters of valve 9 are clamped by the threaded drive of the clamping component. After ensuring that valve 9 is in close contact with the clamping component, the optimal drilling position is corrected by the X-axis platform 4 and Z-axis platform 5. The drilling machine 6 is then driven downward to perform stepped drilling on valve 9, thereby completing the drilling finishing process.

[0085] After drilling, a lot of debris will remain on the surface of the valve 9 that has been drilled, which can easily enter the machine and affect the accuracy of subsequent drilling. Using the embodiment of the present invention, after the clamping member fixes the valve 9, the driving member is activated to generate an outward telescopic force. The telescopic force squeezes the gas outlet, and after the gas outlet deforms, it sprays out gas. The gas pushes the adsorption member to extend along the surface of the valve 9 from the inside to the outside, adsorbing the debris on the surface of the valve 9 that has been drilled and the burrs inside the drill hole. After adsorption, it returns to the initial position. At this time, the collecting member is activated, and the debris and burrs are blown away by the wind and temporarily collected in one place. A negative pressure zone is formed at the bottom of the wind. The negative pressure then draws the debris and burrs collected at the top to the bottom for closed-loop storage.

[0086] It should be noted that the rotary table 7 is mainly composed of a base, a slewing support bearing, a worktable surface, a worm gear reducer, a servo motor, a circular grating, etc., forming a fully closed-loop control system with high repeatability. The slewing support bearing is a single-row cross roller type, which is compactly arranged and can simultaneously withstand axial force, overturning torque and large radial force.

[0087] Because the rotary table 7 has a large surface area, a braking system 8 is added to ensure stable operation. The support system can be simply understood as a self-locking mechanical four-bar linkage. The cylinder drives the linkage to provide upward support to the rotary table 7. It is only used when the machine is working to increase the stability of the machine and ensure the drilling accuracy of the workpiece.

[0088] Braking system 8 can also be simply understood as a self-locking four-bar linkage structure. The cylinder drives the linkage, and the brake pads contact the side surface of the worktable to assist the servo motor in braking, reducing the motor load, increasing the motor's service life, and ensuring stable braking.

[0089] An external counterweight system is installed. The movement of the machine tool spindle unit is transmitted by a ball screw, which converts the rotational motion of the motor into linear motion. The motor and ball screw bear the load of the spindle unit, with only half of it bearing the weight. This is to prevent the spindle unit from becoming unstable under such a load, which could lead to serious errors in machining accuracy. Furthermore, the motor and ball screw are also prone to accelerated damage due to excessive load. Therefore, a counterweight structure is added to the Z-axis design. This machine tool uses a cylinder counterweight, which is connected to the spindle unit. By adjusting the pressure of the cylinder, the pressure is transmitted to the spindle unit, giving it an upward force that balances the force of the spindle slide under working conditions, protecting the motor. The cylinder counterweight pressure is adjustable, making it less prone to failure and adaptable to the rapid movement of the machine tool.

[0090] like Figures 3 to 5 As shown, the clamping member includes:

[0091] There are three electric rods 11, which are symmetrically arranged above the base 1 and surround the valve 9. Three first motors are symmetrically arranged around the rotating worktable 7 on the base 1 and drive vertically upward.

[0092] The electric pole 11 is fixed to the drive end of the first motor;

[0093] An electric telescopic plate 13 is installed above the electric pole 11;

[0094] The horizontal bar 12 is slidably connected to the inner wall of the electric telescopic plate 13;

[0095] There are two clamping plates 15, one fixed below the electric telescopic plate 13 and the other fixed on the horizontal bar 12 inside the electric telescopic plate 13; it should be noted that the horizontal bar 12 is the telescopic part inside the electric telescopic plate 13.

[0096] During operation, since valves 9 come in various models with different heights and inner and outer diameters, there may be situations where clamping is not suitable. Using the embodiment of the present invention: by clicking the button on the CNC system interface, the first motor is driven to rotate the electric rod 11. The electric rod 11 is linked to the electric telescopic plate 13 to change position. The electric telescopic plate 13 moves from the inside to the outside. At this time, space is reserved in the middle of the valve 9. The valve 9 is placed on the rotary table 7. Then the electric telescopic plate 13 is rotated back. The electric telescopic plate 13 is then driven to extend the horizontal bar 12 to a suitable clamping position. By retracting the horizontal bar 12, the two clamping plates 15 are gradually brought together. By clamping the inner and outer diameters of the valve 9, the valve 9 is fixed and vibration is prevented from affecting the machining accuracy.

[0097] When the height of valve 9 needs to be adjusted, the electric rod 11 is operated, and the telescopic rod inside the electric rod 11 is moved upward to a height that matches the valve 9; so that the horizontal bar 12 can be lowered to fit against the valve 9; it should be noted that a certain gap is reserved between the valve 9 and the horizontal bar 12, which will not hinder the normal outward extension movement of the adsorption component.

[0098] like Figure 5 As shown, the lowering component includes:

[0099] The fixed arc plate 16 is set on the inner wall of the clamping plate 15 on one side;

[0100] The upright plate 17 is fixed below the fixed arc plate 16;

[0101] The rotating shaft 18 is located on the outside of the vertical plate 17;

[0102] The sealing cover 19 is rotatably positioned outside the rotating shaft 18 and in contact with the inner side of the upright plate 17;

[0103] Storage tube 21 is fixedly installed at the bottom end of the vertical plate 17;

[0104] The lower sealing cover 20 is located below the upper sealing cover 19 and can be sealed together with the upper sealing cover 19.

[0105] When it is necessary to adsorb the debris remaining on the surface of the valve 9 and the burrs remaining in the hole, in the embodiment of the present invention, the adsorption member is initially located in the inner diameter of the valve 9, and extends outward to clean the debris on the surface of the valve 9; and during cleaning, it contacts the fixed arc plate 16 on the path and squeezes one end of the fixed arc plate 16. The end of the fixed arc plate 16 is set to a downward arc surface. The adsorption member moves downward along the arc surface of the fixed arc plate 16. After changing the direction of movement, it is convenient to adsorb the burrs in the hole. It should be noted that the height of the arc surface of the fixed arc plate 16 determines the width of the valve 9 surface adsorbed by the adsorption member, and the arc surface of the fixed arc plate 16 is set to a height that matches the width of the valve 9 surface.

[0106] After drilling is completed, in order to improve the collection effect, in the preferred embodiment of the present invention, the extension movement of the adsorption element is blocked after contacting the fixed arc plate 16, and the sealing cover 19 is pressed down. The sealing cover 19 rotates along the outside of the rotating shaft 18 and moves closer to the storage tube 21. The sealing cover 19 docks with the storage tube 21 and forms a closed environment, thus having the functions of collection and sealing, which is beneficial to the stronger effect of adsorbing burrs.

[0107] like Figure 9 As shown, the adsorption element includes:

[0108] An electric rotating shaft 311 is located on the outside of the crossbeam column 3, with a direct drive motor at one end and connected to the output end of the direct drive motor.

[0109] The first telescopic plate 31 is located on the outside of the electric rotating shaft 311;

[0110] The mounting seat 33 is located on one side of the electric rotating shaft 311 and below the first telescopic plate 31;

[0111] The extension plate 34 is located inside the mounting base 33;

[0112] Multiple suction strips 35 are fixedly installed below the extension plate 34;

[0113] A locking component is provided on the inner wall of the mounting base 33 to adjust to the appropriate inner diameter of the valve 9;

[0114] During operation, when the adsorption element needs to be placed into the valve 9 for adsorption of debris, using the preferred embodiment of the present invention, the first telescopic plate 31 is first extended into the inner diameter of the valve 9 in conjunction with the mounting seat 33. After the driving element is activated, it rotates, and during rotation, the air-expelling element is activated. Due to the compression, the air-expelling element ejects gas, which gradually pushes the extension plate 34. The extension plate 34 is pushed out from inside the mounting seat 33, and the extension plate 34 forms an extending trend. The extension plate 34 moves to the upper surface of the valve 9, and the suction strip 35 gradually adsorbs the burrs on it, thereby enabling the equipment to have a rapid adsorption effect and improving the cleaning effect on the valve 9. It should be noted that the extension plate 34 has a cavity inside, and a return spring is provided between the extension plate 34 and the mounting seat 33.

[0115] like Figure 9 As shown, the storage components include:

[0116] The recycling block 32 is fixedly installed on the inner wall of the mounting base 33;

[0117] Pipeline 2 322 has three sections, symmetrically arranged on the outside of recycling block 32;

[0118] Three-way valve 323 is fixedly installed above pipe 2 322, and a control valve is installed above it;

[0119] Pipe 321 is fixedly installed on one side of the three-way valve 323;

[0120] Fan 324 is positioned above main shaft 30;

[0121] The intake pipe 325 is located on the outside of the storage pipe 21.

[0122] A through groove is provided between the mounting base 33 and the recycling block 32 to collect burrs in the recycling block 32.

[0123] In operation, when it is necessary to recycle the burrs adsorbed by the extension plate 34, in the preferred embodiment of the present invention, the extension plate 34 adsorbs the burrs into the interior of the mounting seat 33 and enters the recycling block 32 through the through groove of the mounting seat 33, and the recycling block 32 collects the debris.

[0124] like Figure 13 As shown, the locking component includes:

[0125] The annular strip 301 is disposed on the inner wall of the mounting base 33 and located below the mounting base 33;

[0126] The plug rod 302 is positioned above the annular strip 301;

[0127] The elastic strip 304 is movably installed above the plug-in rod 302;

[0128] The lower surface of the mounting base 33 has multiple slots that mate with the elastic strip 304, so that the elastic strip 304 can be inserted for positioning; a positioning lock hole is provided on one side of the mounting base 33.

[0129] The locking bar 303 is fixedly installed on one side of the mounting base 33 and engages with the positioning locking hole opened on the other side of the mounting base 33;

[0130] During operation, before deburring the surface of valve 9, it is necessary to adjust it due to the different inner diameter specifications of valve 9. Using the embodiment of the present invention, a tool is used to pull the annular strip 301 to the other side. The annular strip 301, in conjunction with the insertion rod 302, gradually slides. The insertion rod 302 slides to the inner wall of the mounting seat 33 on the other side. At this time, the elastic strip 304 moves against the inner wall of the mounting seat 33. When it encounters a suitable position, the elastic strip 304 loses its resistance and inserts into the slot on the mounting seat 33. At the same time, the annular strip 301 will move the mounting seat 33 on one side to the other side. When the two parts of the mounting seat 33 are joined together, the locking bar 303 is inserted into the positioning hole on the other side of the mounting seat 33 to complete the universal adjustment, which is convenient for the application of more valves 9. It should be noted that the mounting seat 33 is not a whole ring, but has a notch and is not made of rigid material. The two mounting seats 33 can be joined together to form a whole.

[0131] like Figure 10 , Figure 11 As shown, the air outlet component includes:

[0132] Vacuum bag 36 is disposed inside the mounting base 33;

[0133] The nozzle 38, which has multiple nozzles, is installed on the outside of the vacuum bladder 36 and can be used with the extension plate 34;

[0134] When the extension plate 34 needs to be pushed during operation, the drive component rotates and contacts the vacuum bag 36. The vacuum bag 36 is impacted and deformed. The gas inside the vacuum bag 36 is ejected through the nozzle 38 to the side of the extension plate 34, so that the extension plate 34 has the function of extension, which facilitates adsorption on the surface of the valve 9.

[0135] like Figure 10 As shown, the driving component includes:

[0136] The main shaft 30 is rotatably positioned at the center of valve 9;

[0137] The bottom end of the spindle 30 is connected to a second motor and is connected to the drive end of the second motor;

[0138] The second telescopic plate 300 is fixedly installed on the outside of the main shaft 30.

[0139] During operation, when air blowing is required, the second motor is driven. After the second motor rotates, it drives the main shaft 30 to move. While the main shaft 30 rotates, it drives the second telescopic plate 300 to extend. After the second telescopic plate 300 extends, it contacts the vacuum bag 36. The vacuum bag 36 is squeezed and deformed, and the internal gas is ejected, pushing the extension plate 34 out of the mounting base 33. The extension plate 34 extends and moves towards the upper surface of the valve 9. At the same time as it extends, it uses the suction strip 35 to adsorb the debris on the upper surface of the valve 9, which facilitates timely driving of the extension plate 34 and the suction strip 35 to adsorb debris and burrs in the holes.

[0140] Working principle:

[0141] First, place valve 9 on the rotary table 7, adjust the height of the clamping parts by electric lever 11, and clamp the inner and outer diameters of valve 9 by crossbar 12 to ensure stability; the anti-vibration design improves processing quality, and the circulating cleaning system extends equipment life;

[0142] The Z-axis platform 5 on the crossbeam column 3 drives the drilling machine 6 to move to the preset drilling position;

[0143] The rotary table 7 rotates the valve 9 according to the indexing requirements, and the drilling machine 6 drills holes layer by layer in a low-speed constant feed mode, first drilling small holes and then drilling the large holes formed around them to complete the finishing process.

[0144] Adsorption start-up: When air blowing is required, the second motor is driven. After the second motor rotates, it drives the main shaft 30 to move. While the main shaft 30 rotates, it drives the second telescopic plate 300 to extend. After the second telescopic plate 300 extends, it contacts the vacuum bag 36. The vacuum bag 36 is squeezed and deformed, and the internal gas is ejected, pushing the extension plate 34 out of the mounting base 33. The extension plate 34 extends and moves towards the upper surface of the valve 9. At the same time, it adsorbs the debris on the upper surface of the valve 9 through the suction strip 35, which facilitates the timely driving of the extension plate 34 and the suction strip 35 to adsorb debris and burrs in the hole; Dynamic chip removal: The gas-driven adsorption component covers the surface of the valve 9 and the inside of the hole. Combined with negative pressure recovery, it avoids secondary pollution; High-precision drilling and automated chip removal are integrated to reduce manual intervention;

[0145] Burr Recovery: After the debris on the upper surface of valve 9 is absorbed by the suction strip 35, the second telescopic plate 300 gradually retracts. At this time, the extension plate 34 moves back to reset inside the mounting base 33. The mounting base 33 is connected to the recovery block 32. At this time, the control valve opening of the three-way valve 323 is opened, the second pipe 322 and the first pipe 321 are closed, the air inlet pipe 325 is opened, and the fan 324 is started. The upper part of the fan 324 is the air outlet area. The fan 324 blows the air upwards, and the air blows to the extension plate 34. The vibration of the display plate 34 shakes the burrs and debris on the suction strip 35 into the inside of the recycling block 32. A negative pressure zone is formed at the bottom of the blower 324. The negative pressure enters the storage tube 21 through the air inlet pipe 325. A negative pressure is generated inside the storage tube 21. The negative pressure draws the debris and burrs inside the recycling block 32 into the storage tube 21 through the second pipe 322 and the first pipe 321, thus forming a closed loop to complete centralized processing. Closed-loop control: The fully closed-loop system of the rotary worktable 7 ensures indexing accuracy, and the braking system 8 reduces load fluctuations.

[0146] Hole cleaning: The suction strip 35 adsorbs debris on the upper surface of valve 9 and also sucks up burrs inside the borehole; the sealing cover 19 closes to form a sealed space, improving the negative pressure effect.

[0147] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A drilling device for an automatic indexing flange of a large-diameter valve, comprising a base (1) and a crossbeam column (3) fixedly installed above the base (1), an X-axis platform (4) is provided above the crossbeam column (3), a Z-axis platform (5) is slidably provided on one side of the X-axis platform (4), a drilling machine (6) is fixed on the Z-axis platform (5), a rotary table (7) driven by a servo motor is provided above the base (1), a valve (9) is provided above the rotary table (7), the rotary table (7) supports the rotation of the valve (9) for drilling the indexing flange, and a braking system (8) is provided on the outside of the rotary table (7), characterized in that, Also includes: The clamping part is located above the base (1) and outside the rotary table (7) to clamp the valve (9). The clamping part includes a clamping member and a lowering member. The clamping member is disposed above the valve (9) and connected to the base (1). The clamping member is connected to the lowering member, and the lowering member is disposed on the inner wall of the clamping member. The chip removal section is located above the valve (9) and on the inner wall of the valve (9) to clean up the debris after drilling the valve (9); The chip removal part includes an adsorption component and a storage component. The adsorption component is disposed above the valve (9), and the general component is disposed on the inner wall of the valve (9). The storage component is connected to the adsorption component. A circulation component is located outside the valve (9) and connected to the chip removal section to recover burrs; The circulation component includes an air outlet and a driving component. The air outlet is located on one side of the receiving component and is connected to the driving component. The driving component is located outside the air outlet. The adsorption element includes: An electric rotating shaft (311) is set on the outside of the crossbeam column (3), with a direct drive motor at one end and connected to the output end of the direct drive motor; The first telescopic plate (31) is located on the outside of the electric rotating shaft (311); The mounting seat (33) is located on one side of the electric rotating shaft (311) and below the first telescopic plate (31); An extension plate (34) is provided on the inside of the mounting base (33); Suction strips (35), having multiple strips, are fixedly installed below the extension plate (34); The locking parts are located on the inner wall of the mounting base (33); The storage component includes: The recycling block (32) is fixedly installed on the inner wall of the mounting base (33); Pipeline 2 (322) has three sections, symmetrically arranged on the outside of the recycling block (32); A three-way valve (323) is fixedly installed above pipe two (322), and a control valve is installed above it; Pipeline 1 (321) is fixedly installed on one side of the three-way valve (323); A fan (324) is positioned above the main shaft (30); The intake pipe (325) is located outside the storage pipe (21); A through groove is provided between the mounting base (33) and the recycling block (32).

2. The automatic indexing flange drilling equipment for large-diameter valves according to claim 1, characterized in that: The clamping element includes: Three electric rods (11) are symmetrically arranged above the base (1) and around the valve (9). Three first motors are symmetrically arranged around the rotating worktable (7) on the base (1) and drive vertically upward. An electric pole (11) is fixed to the drive end of the first motor; An electric telescopic plate (13) is installed above the electric pole (11); A horizontal strip (12) is slidably connected to the inner wall of the electric telescopic plate (13); The clamping plate (15) has two parts, one fixed below the electric telescopic plate (13) and the other fixed on the crossbar plate (12).

3. The automatic indexing flange drilling equipment for large-diameter valves according to claim 2, characterized in that: The lowering component includes: A fixed arc plate (16) is set on the inner wall of a clamping plate (15) on one side; The upright plate (17) is fixed below the fixed arc plate (16).

4. The automatic indexing flange drilling equipment for large-diameter valves according to claim 3, characterized in that: The lowering component further includes: The rotating shaft (18) is located on the outside of the upright plate (17).

5. The automatic indexing flange drilling equipment for large-diameter valves according to claim 4, characterized in that: The lowering component further includes: The sealing cover (19) is rotatably positioned outside the rotating shaft (18) and in contact with the inner side of the upright plate (17); The lower sealing cover (20) is located below the upper sealing cover (19) and can be sealed together with the upper sealing cover (19); Storage tube (21) is fixedly installed at the bottom of the upright plate (17).

6. The automatic indexing flange drilling equipment for large-diameter valves according to claim 1, characterized in that: The locking component includes: An annular strip (301) is provided on the inner wall of the mounting base (33); The plug rod (302) is positioned above the annular strip (301); The elastic strip (304) is movably installed above the plug rod (302) and penetrates the inner wall of the mounting base (33); The lower surface of the mounting base (33) is provided with a plurality of slots that cooperate with the elastic strip (304) so ​​that the elastic strip (304) can be inserted for positioning; A positioning lock hole is provided on one side of the mounting base (33); The lock bar (303) is fixedly installed on one side of the mounting base (33) and cooperates with the positioning lock hole opened on the other side of the mounting base (33).

7. The automatic indexing flange drilling equipment for large-diameter valves according to claim 1, characterized in that: The air outlet component includes: A vacuum bag (36) is disposed inside the mounting base (33); The nozzle (38) has multiple nozzles, which are installed on the outside of the vacuum bladder (36) and can be used with the extension plate (34).

8. The automatic indexing flange drilling equipment for large-diameter valves according to claim 1, characterized in that: The driving component includes: The main shaft (30) is rotatably positioned at the center of the valve (9); The bottom end of the main shaft (30) is connected to a second motor and is connected to the drive end of the second motor; The second telescopic plate (300) is fixedly installed on the outside of the main shaft (30).

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