Flange tapping device

Abstract

The invention relates to the field of drilling machines, in particular to a flange tapping device which comprises a base table, two supporting plates used for erecting a flange are symmetrically arranged on the base table, and a plurality of receding holes allowing drill rods to penetrate through are formed in each supporting plate; trepanning units are arranged on the two sides of the base table; the drilling rods for drilling are divided into two groups, and each group of drilling rods is mounted in the end shell, so that enough space is formed in the end shell for mounting a driving power source for driving the drilling rods to rotate, and meanwhile, enough space is formed between every two groups of drilling rods, so that the drilling rods with different sizes and specifications can be mounted; generated chippings cannot touch the two drill rods at the same time, and the situation that the chippings are wound on the two drill rods, and stable operation of the drill rods is affected is avoided; and the two sets of drill rods synchronously open the flange, and the flange opening machining efficiency can be doubled.

Description

Technical Field

[0001] The invention relates to the field of drilling machines, in particular to a flange hole opening device. Background Art

[0002] The flange as a whole is usually disc-shaped, and multiple fixing holes are opened at the eccentric position of the flange through a hole-opening device. The number of holes in the flange is a more specific technical issue, which is usually closely related to factors such as the type, size, usage scenario, and standard specifications of the flange. For example, in terms of flange type, flat welding flanges usually have fewer holes, generally with 4 fixing holes; butt welding flanges have relatively more holes, generally with 8 fixing holes; for example, in terms of usage scenarios, when it needs to withstand high pressure, the flange can generally have up to 12 or 16 fixing holes.

[0003] When processing multiple fixing holes on a flange, there are two ways, one is to process the fixing holes one by one, and the other is to process multiple fixing holes at one time; the former processes one by one, which is obviously less efficient, while the latter processes multiple fixing holes at one time. Due to the constraints of the overall size of the flange and the volume of the hole-opening equipment, that is, the spacing between the drill rods, only half of the total number of fixing holes can be processed at one time, and all the fixing holes cannot be processed at one time. There is still room for improvement in processing efficiency.

[0004] Therefore, a flange opening device is proposed to solve the above problems. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a flange hole opening device described in the present invention comprises a base, two support plates for erecting the flange are symmetrically arranged on the base, and each support plate is provided with a plurality of clearance holes for the drill rod to pass through; A hole opening unit is arranged on both sides of the base, and the hole opening unit includes a slide plate, each of which is slidably connected to an end shell, and a plurality of drill rods are evenly arranged on the end surface of the end shell opposite to the support plate, and the end of each drill rod passes through the end shell and is connected to a motor in the end shell that drives the drill rod to rotate, and the drill rods on the two end shells are staggered; the position of the clearance hole on the support plate matches the position of the drill rod; the motor drives the drill rod to rotate, and the end shell drives the drill rod to slide along the direction of the slide plate, and the drill rod passes through the clearance hole to drill the flange.

[0007] Preferably, the bottom of each support plate is slidably connected to the base; A pre-pressing assembly is arranged on the side wall of each end shell opposite to the support plate. The pre-pressing assembly comprises an elastic telescopic rod fixedly connected to the end shell, a pressure plate is fixedly connected to the end of the elastic telescopic rod, and a plurality of No. 1 holes for the drill rod to pass through are arranged on the pressure plate.

[0008] Preferably, a placement groove is formed in the middle position between the two support plates. The placement groove penetrates upward through the top of the support plate. A support assembly with a support flange is provided between the two placement grooves. The support assembly includes a support block. A rotating hole is formed in the center position of the support block, and a rotating groove is formed inside the support block. The rotating groove is coaxially arranged with the rotating hole. A rotating body is arranged in the rotating hole and the rotating groove. A plurality of convex parts are arranged on the outer ring of the rotating body, and a hexagonal groove is formed at the end of the rotating body. A plurality of arc-shaped top plates are evenly arranged on the outer ring of the support block. A sliding rod is fixedly connected to the inner side wall of the top plate. The end of the sliding rod penetrates into the rotating groove. When the rotating body is rotated, the convex part pushes the sliding rod outwards, and the top plate presses against the inner ring of the flange.

[0009] Preferably, a plurality of bayonets are formed on the outer rings of both ends of the support block. And extension bodies are provided at both ends of the support block. A plurality of blocks adapted to the bayonets are arranged at an eccentric position at one end of the extension body, and a rod adapted to the groove is arranged at the center position at one end of the extension body.

[0010] Preferably, a plurality of setscrews connected by threads are arranged on each support plate; a second hole for the setscrew to penetrate is formed in the pressing plate.

[0011] Preferably, a notch is formed at the end of each sliding rod, and a rubber block is arranged at the end of each convex part. The rubber block is embedded in the notch, and the convex part abuts against the end of the sliding rod.

[0012] Preferably, a cooling component is arranged on each pressing plate. The cooling component includes liquid inlet pipes arranged on both sides of the end shell. The end of the liquid inlet pipe extends to the pressing plate, and a trigger mechanism for controlling the flow of the coolant is arranged at the end of the liquid inlet pipe. A liquid outlet pipe is communicated with the trigger mechanism. The end of the liquid outlet pipe extends above the guide support plate, and the drainage direction of the liquid outlet pipe points to the flange.

[0013] Preferably, the number of the base platforms is two. The two base platforms are connected together by a connecting rod. The two base platforms are slidably connected to a guide rail arranged at their bottoms; Chamfering units are further arranged on both sides of the guide rail. The chamfering units are used for machining chamfers at the flange opening positions.

[0014] Preferably, limiting plates are symmetrically arranged on the outer rings of the other ends of each extension body; a base block is arranged at the inner bottom of the placement groove. A limiting groove is formed on the upper surface of the base block. The extension body is installed in the placement groove, and the limiting plate is embedded in the limiting groove.

[0015] Preferably, guide rods are arranged at the same side positions of the two base platforms; a guide groove is formed on the side wall of the sliding plate opposite to the base platform. The guide rod is embedded in the guide groove and slides.

[0016] The beneficial effects of the present invention are as follows: 1. In the present invention, the flange hole-opening device is designed to divide the drill rods for opening holes into two groups. Each group of drill rods is installed in the end shell, so that there is enough space in the end shell to install a driving power source for driving the drill rods to rotate. At the same time, there is enough space between each group of drill rods to install drill rods of different sizes. In addition, during the drilling process of the drill rods, the debris generated will not touch the two drill rods at the same time, so as to avoid the debris being entangled on the two drill rods and affecting the stable operation of the drill rods. Furthermore, the fixing holes on the flange are also arranged at large and small intervals. The drill rods of one group can be replaced with smaller diameter drill rods, and the drill rods of the other group can be replaced with larger diameter drill rods. It can be flexibly applied to the hole-opening processing of flanges of various specifications.

[0017] 2. In the present invention, a chamfering unit is provided to cooperate with a hole-opening unit, so that the opened fixed holes can be chamfered. Meanwhile, the chamfering and the hole-opening do not interfere with each other and can be operated in parallel. In addition, chamfering, unloading and loading operations can be performed during the hole-opening time period, thereby further improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the flange opening device in the present invention; Figure 2 A top view of the flange opening device of the present invention; Figure 3 It is a three-dimensional diagram of the cooperation between the guide rail and the base in the present invention; Figure 4 It is a three-dimensional diagram of the coordination between two adjacent bases in the present invention; Figure 5 It is a top view of the cooperation between two adjacent bases in the present invention; Figure 6 A first-view stereoscopic view of the support plate of the present invention; Figure 7 A second perspective stereoscopic view of the support plate in the present invention; Figure 8 A schematic diagram of the distribution of the clearance holes on two adjacent support plates in the present invention; Figure 9 It is a three-dimensional diagram of the cooperation between the hole opening unit and the chamfering unit in the present invention; Figure 10 is a three-dimensional diagram of the opening unit in the present invention; Figure 11 A three-dimensional diagram of a pressure plate in the present invention; Figure 12 is a cross-sectional view of the trigger mechanism of the present invention; Figure 13 It is a three-dimensional diagram of the matching of the flange and the supporting assembly in the present invention; Figure 14 is a three-dimensional diagram of the support assembly of the present invention; Figure 15Isometric view of the support block in the present invention; Figure 16 Is Figure 15 Cross-sectional view in the A-A direction in; Figure 17 Cross-sectional view of the support block in the present invention; Figure 18 Isometric view of the extension body in the present invention.

[0019] In the figure: 101, flange; 1, base; 2, support plate; 3, relief hole; 4, slide plate; 5, end shell; 6, drill pipe; 7, elastic telescopic rod; 8, pressing plate; 9, first hole; 10, placement groove; 11, support block; 12, rotation hole; 13, rotation groove; 14, rotating body; 15, convex part; 16, groove; 17, slide bar; 18, bayonet; 19, extension body; 20, clamping block; 21, clamping rod; 22, setscrew; 23, second hole; 24, notch; 25, rubber block; 26, liquid inlet pipe; 27, trigger mechanism; 28, liquid outlet pipe; 29, base shell; 30, trigger button; 31, compression spring; 32, third hole; 33, connecting rod; 34, guide rail; 35, lead screw; 36, chamfering unit; 37, limiting plate; 38, base block; 39, limiting groove; 40, guide rod; 41, guide groove; 42, top plate; 43, slider; 44, rubber plate. Detailed implementation manners

[0020] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0021] In order to solve the technical problems proposed in the background art and improve the drilling efficiency of the flange 101, an embodiment of the present invention provides a flange opening device. Referring to Figures 1-10 , the flange opening device includes a base 1, two support plates 2 for erecting the flange 101 are symmetrically arranged on the base 1, and a plurality of relief holes 3 for the drill pipe 6 to penetrate are opened on each support plate 2; opening units are arranged on both sides of the base 1, the opening unit includes a slide plate 4, an end shell 5 is slidably connected to each slide plate 4, a plurality of drill pipes 6 are evenly arranged on the end face of the end shell 5 opposite to the support plate 2, the end of each drill pipe 6 penetrates into the end shell 5 and is connected to a motor in the end shell 5 for driving the drill pipe 6 to rotate, and the drill pipes 6 on the two end shells 5 are staggered; the positions of the relief holes 3 on the support plate 2 match the positions of the drill pipes 6; the motor drives the drill pipe 6 to rotate, and the end shell 5 drives the drill pipe 6 to slide along the direction of the slide plate 4, and the drill pipe 6 penetrates through the relief hole 3 to drill the flange 101; In this embodiment, specifically, the servo motor combined with the PLC control end shell 5 can drive the drill rod 6 to slide along the slide plate 4 in terms of speed, direction and progress, so as to achieve the advancement and retreat of the drill rod 6; two support plates 2 are mounted on the base 1, and the flange 101 to be processed is placed between the two support plates 2; Specifically, the specific operation process of drilling a hole in the flange 101 using the flange hole drilling device is as follows: Step S1: Loading: placing the flange 101 between two support plates 2, and placing the flange 101 in a vertical state; Step S2: drilling holes: synchronously drive two hydraulic cylinders, the two hydraulic cylinders respectively push the end shells 5 connected thereto to move toward the support plate 2, and at the same time, the motors in the two end shells 5 drive the drill rods 6 connected thereto to rotate at high speed; the total number of drill rods 6 arranged on the two end shells 5 is the number of holes to be drilled on the flange 101, that is, the drill rods 6 that can drill holes on the flange 101 at one time are evenly divided on the two end shells 5 on both sides of the flange 101, and holes are drilled synchronously from both sides of the flange 101, and the drill rods 6 on the two end shells 5 are staggered, so as to achieve the purpose of drilling one hole on the flange 101 for each drill rod 6, and ensure that the drill rods 6 can machine uniform fixing holes on the flange 101; the drill rods 6 on both sides of the flange 101 rotate at high speed while penetrating the make way holes 3 on the support plate 2, and drill fixing holes on the flange 101; Step S3: unloading: synchronously driving the two hydraulic cylinders to drive the rear side of the end shell 5 away from the flange 101, and then removing the processed flange 101; Then, the above step S1 of loading, step S2 of drilling and step S3 of unloading are repeated to perform continuous drilling work; The flange hole opening device divides the drill rods 6 for opening holes into two groups, and each group of drill rods 6 is installed in the end shell 5, so that there is enough space in the end shell 5 to install the driving power source for driving the drill rods 6 to rotate. At the same time, there is enough space between each group of drill rods 6 to install drill rods 6 of different sizes. For example, the flange 101 to be processed can be a butt-welding flange, and the outer ring diameter of the butt-welding flange is 280MM or 285MM, and the center circle diameter of the fixing holes thereon is 240MM, and the diameter of each fixing hole is 23MM. The position of the clearance hole 3 on the support plate 2 matches the position of the drill rod 6, and the inner circle diameter of each clearance hole 3 is controlled at 25MM. At the same time, the position of each drill rod 6 on the end shell 5 matches the position of the fixing hole to be processed on the butt-welding flange, and the outer circle diameter of each drill rod 6 is controlled to be less than 25MM, and at the same time matches the diameter of each fixing hole; The drill pipes 6 are distributed on two end shells 3, and there is enough space between adjacent drill pipes. During the process of opening holes in the drill pipes 6, the generated debris will not touch two adjacent drill pipes 6 at the same time, avoiding the entanglement of the debris on two adjacent drill pipes 6 and affecting the stable operation of the drill pipes 6. Moreover, the fixing holes on the flange 101 are also arranged with different sizes. One group of drill pipes 6 can be replaced with smaller-diameter drill pipes 6, and the other group of drill pipes 6 can be replaced with larger-diameter drill pipes 6, which can be flexibly applied to the hole-opening processing of various specifications of flanges 101. To replace the drill pipes 6, open the end shell 3, loosen the fastening bolts fixing the drill pipes 6, and then replace the drill pipes 6 one by one. Generally, the drill pipes 6 do not need to be replaced. Usually, flanges 101 of the same specification are processed in batches, and the drill pipes 6 are replaced only when the flange materials are changed.

[0022] Refer to Figures 1-10 Furthermore, the bottom of each support plate 2 is slidably connected to the base 1. And, a preloading assembly is provided on the side wall of each end shell 5 opposite to the support plate 2. The preloading assembly includes an elastic telescopic rod 7 fixed on the end shell 5. A pressing plate 8 is fixed to the end of the elastic telescopic rod 7, and a plurality of first holes 9 for the drill pipes 6 to pass through are formed in the pressing plate 8. Sliders 43 are arranged on the lower surface of each support plate 2. The sliders 43 are slidably connected to the chutes formed on the upper surface of the base 1 through springs. The elastic force of the springs can separate two adjacent support plates 2 to create space for the loading and unloading of the flanges 101. In the initial state, the space between two adjacent support plates 2 is large enough to smoothly place the flange 101. Some flanges 101 have a large thickness. During loading, the flange 101 can be clamped by the support plates 2 and placed in a vertical state. However, some flanges 101 have a small thickness. During loading, the support plates 2 cannot clamp the flange 101, and it is also difficult to place the flange 101 in a vertical state. When the drill pipes 6 contact the inclined flange 101, the hole-opening position will deviate, affecting the hole-opening quality of the flange 101. Therefore, a preloading assembly is provided, which can pre-clamp the flange 101 with a small thickness in a vertical state between two support plates 2. The specific operation of the preloading assembly is as follows: after loading, the hydraulic cylinder drives the end shell 5 to move towards the support plate 2. The support plate 2 drives the elastic telescopic rod 7 to move towards the support plate 2. At the same time, the elastic telescopic rod 7 drives the pressing plate 8 to press on the support plate 2. Two adjacent support plates 2 approach each other along the base 1 and clamp the flange 101. Then, the hydraulic cylinder pushes the end shell 5 to move. The drill pipes 6 sequentially pass through the first holes 9 and the relief holes 3 and touch the surface of the flange 101. Then, the high-speed rotating drill pipes 6 open fixing holes in the flange 101. After the hole opening is completed, the end shell 5 retracts away from the support plate 2. At this time, the drill rod 6 first disengages from the flange 101, and then the pressure plate 8 disengages from the support plate 2. Ensure that when the drill rod 6 retracts, the flange 101 is still squeezed and clamped by the support plate 2. If the pressure plate 8 first disengages from the support plate 2, the flange 101 will tilt, and the drill rod 6 will mill the fixing hole for the second time, resulting in the failure of the fixing hole processing. The setting of the preloading assembly is used to stably clamp the flange 101 to ensure the smooth hole opening of the flange 101 and the quality of the processed fixing holes. Moreover, the preloading assembly can also cooperate with two sets of drill rods 6 of different specifications. The drill rods 6 of different specifications not only have different diameters, but also have different overall lengths. Usually, the drill rod 6 with a smaller diameter also has a relatively smaller length. If a set of drill rods 6 with a smaller diameter is used, the moving stroke of the drill rod 6 with a smaller diameter touching the flange 101 is greater than the moving stroke of the drill rod 6 with a larger diameter touching the flange 101. If the two sets of drill rods 6 do not touch the flange 101 synchronously, it will inevitably cause the flange 101 to tilt. The preloading assembly can avoid the above problems, clamp the flange 101, and ensure that the flange 101 can be stably in a vertical state.

[0023] Refer to Figures 4-8 and Figures 13-18 As shown in [Figure Reference] and [Another Figure Reference], a placement groove 10 is opened at the middle position between the two support plates 2. The placement groove 10 penetrates upward through the top of the support plate 2. A support assembly for supporting the flange 101 is provided between the two placement grooves 10. The support assembly includes a support block 11. A rotation hole 12 is opened at the center position of the support block 11. A rotation groove 13 is opened inside the support block 11. The rotation groove 13 is coaxially arranged with the rotation hole 12. A rotating body 14 is provided in the rotation hole 12 and the rotation groove 13. A plurality of convex portions 15 are provided on the outer ring of the rotating body 14. A hexagonal groove 16 is opened at the end of the rotating body 14. A plurality of arc-shaped top plates 42 are uniformly arranged on the outer ring of the support block 11. A sliding rod 17 is fixedly connected to the inner side wall of the top plate 42. The end of the sliding rod 17 penetrates into the rotation groove 13. When the rotating body 14 is rotated, the convex portion 15 pushes the sliding rod 17 outwards, and the top plate 42 presses the inner ring of the flange 101. Since the flange 101 has multiple diameter specifications, in order to ensure that the fixing holes are evenly distributed on the flange 101, a support assembly that can center the flange 101 on the support plate 2 is provided, so that the axis of the flange 101 coincides with the axis of the circle formed by a certain set of drill rods 6. The specific operation of the support component is as follows. Place the support component at the center position of the flange 101, and then rotate the rotating body 14. The rotating body 14 drives the convex part 15 to deflect. The convex part 15 externally presses against the sliding rod 17, and the sliding rod 17 presses the top plate 42 against the inner ring surface at the center of the flange 101. At this time, the axis of the support block 11 coincides with the axis of the flange 101. The bottom of the placement groove 10 is semi-circular, and its axis coincides with the axis of the circle formed by a certain group of drill rods 6. The end of the support block 11 is seated in the placement groove 10. At this time, the axis of the support block 11, the axis of the placement groove 10, and the axis of the circle formed by the drill rods 6 coincide, and the drill rods 6 can process uniform fixing holes on the flange 101.

[0024] Moreover, the support component is also helpful for the feeding process of the flange 101. In advance, install the support component at the center position of the flange 101 on one side of the flange opening device and prepare it in advance. Then, during feeding, directly place the support component together with the flange 101 between two adjacent support plates 2. Through the support block 11, the flange 101 can be quickly placed vertically, and there is no need to repeatedly adjust the state of the flange 101, improving the feeding efficiency. Considering the stability and adaptability of the support component assembled on the flange 101, a replaceable rubber plate 44 can be set on the surface of the top plate 42, as Figure 17 shown. The rubber plate 44 is assembled on the outer surface of the top plate 42 and is fixed by bolts installed on the inner curved surface of the top plate 42. The bolts penetrate the top plate 42 and fix the rubber plate 44, ensuring the flatness of the outer curved surface of the rubber plate 44, increasing the friction between the inner ring of the flange 101 and the support component, and achieving a good fixing effect. In order to adapt to the fixation of flanges 101 with different inner ring sizes, the arc curvature of the outer wall of the rubber plate 44 is adjusted by adjusting the thickness of different positions of the rubber plate 44, so that the arc curvature of the outer wall of the rubber plate 44 is the same as the curvature of the inner ring of the flange 101, and then ensuring that the rubber plate 44 and the flange 101 are fixed by surface-to-surface contact, ensuring the fixing effect of the flange 101.

[0025] Refer to Figures 6-8 and Figures 13-18 . Multiple bayonets 18 are opened on the outer circles of both ends of the support block 11, and extension bodies 19 are provided at both ends of the support block 11. At the eccentric position of one end of the extension body 19, multiple blocks 20 adapted to the bayonets 18 are provided, and at the center position of one end of the extension body 19, a rod 21 adapted to the groove 16 is provided. The extension body 19 is provided to extend the end length of the support block 11, facilitating the loading and unloading operations of the flange 101. During specific operations, first, the support assembly is installed at the center position of the flange 101. Then, the latch 20 on the extension body 19 is aligned with the bayonet 18, and the extension body 19 can be installed on the support block 11. When the extension body 19 is installed on the support block 11, the latch rod 21 moves along the rotation hole 12, and the end of the latch rod 21 finally engages in the groove 16. The extension body 19 is clamped to the end of the support block 11, and the latch rod 21 is embedded in the groove 16, which can restrain the rotation of the rotating body 14, thus stabilizing the support assembly and the flange 101, enabling the support assembly to effectively support at the inner ring position of the center of the flange 101.

[0026] Refer to Figures 1-8 On each of the support plates 2, a plurality of setscrews 22 connected by threads are provided; a second hole 23 for the setscrew 22 to penetrate is formed on the pressing plate 8, and the second hole 23 avoids the setscrew 22 to prevent the ends of the setscrew 22 from being uneven, so that the pressing plate 8 cannot be completely pressed against the outer side wall of the support plate 2; The flange 101 has various specifications. For example, for the neck - butt welded flange 101, one end face has a part that transitions with a round pipe, and the combined thickness of this part and the flange 101 is relatively large. When the support plates 2 clamp this neck - butt welded flange 101, two adjacent support plates 2 cannot synchronously clamp the flange 101. At this time, the length of the inner end of the setscrew 22 protruding from the inner side wall of the support plate 2 can be adjusted by rotation. When two adjacent support plates 2 press against the flange 101, the setscrew 22 can replace the support plate 2 to clamp and fix the flange 101; or when the thickness of the flange 101 is relatively small, the support assembly protrudes from both end faces of the flange 101. If the support plate 2 presses against the flange 101, the support plate 2 cannot touch the end face of the flange 101 but presses against the support assembly, resulting in the failure of clamping and fixing the flange 101. At this time, the setscrew 22 can be rotated, and the setscrew 22 replaces the support plate 2 to press against the end face of the flange 101 to fix the flange 101.

[0027] Refer to Figures 13-17 At the end of each of the sliding rods 17, a notch 24 is formed, and at the end of each of the convex parts 15, a rubber block 25 is provided. The rubber block 25 is embedded in the notch 24, and the convex part 15 abuts against the end of the sliding rod 17; The convex part 15 is used to externally push the sliding rod 17, and the rubber block 25 is embedded in the notch 24 to restrict the relative sliding misalignment between the convex part 15 and the sliding rod 17. After the convex part 15 abuts against the sliding rod 17, the convex part 15 can stably externally push the sliding rod 17 to prevent the convex part 15 from sliding off the sliding rod 17, resulting in the failure of installing the support assembly and the flange 101.

[0028] Refer to Figures 10-12, each of the pressing plates 8 is provided with a cooling assembly, the cooling assembly includes a liquid inlet pipe 26 arranged on both sides of the end shell 5, the end of the liquid inlet pipe 26 extends to the pressing plate 8, and the end of the liquid inlet pipe 26 is provided with a trigger mechanism 27 for controlling the flow of the coolant, and the trigger mechanism 27 is connected to a liquid outlet pipe 28, the end of the liquid outlet pipe 28 extends to above the support plate 2, and the discharge direction of the liquid outlet pipe 28 points to the flange 101; In the embodiment of the present invention, the trigger mechanism 27 is designed to control the flow of the coolant, and the trigger mechanism 27 includes a base shell 29, the upper end of the base shell 29 is connected to the liquid inlet pipe 26, the lower end of the base shell 29 is connected to the liquid outlet pipe 28, and a trigger button 30 is arranged on one side of the base shell 29. The trigger button 30 is slidably connected to the base block 38 through a compression spring 31, and a third hole 32 for connecting the liquid inlet pipe 26 and the liquid outlet pipe 28 is provided on the trigger button 30; when the pressure plate 8 is pressed on the outer wall of the support plate 2, the trigger button 30 is pressed on the support plate 2, and the trigger button 30 moves into the base shell 29. The trigger button 30 is activated, and the No. 3 hole 32 connects the liquid inlet pipe 26 and the liquid outlet pipe 28, and the coolant flows along the liquid inlet pipe 26 and the liquid outlet pipe 28, and the coolant is sprayed on the surface of the flange 101 and the drill rod 6 to perform cooling and temperature reduction protection and lubrication protection; when the pressing plate 8 is separated from the supporting plate 2, the trigger button 30 is reset under the action of the compression spring 31 connected thereto. At this time, the No. 3 hole 32 is staggered from the liquid inlet pipe 26 and the liquid outlet pipe 28, and the trigger button 30 blocks the liquid inlet pipe 26 and the liquid outlet pipe 28. When loading and unloading, the coolant is controlled to stop flowing and spraying, thereby achieving the purpose of saving coolant.

[0029] Reference Figures 1-9 There are two bases 1, and the two bases 1 are connected together by a connecting rod 33. The two bases 1 are slidably connected to a guide rail 34 arranged at the bottom thereof; the bottoms of the two bases 1 are slidably connected to the guide rail 34, and a screw rod 35 for driving the movement thereof is arranged at the bottom of the base 1. The screw rod 35 is driven to rotate forward and reversely by an external motor, and the motor can be started and stopped by a PLC, and can control the movement stroke of the base 1 on the guide rail 34, so that the flange 101 on the base 1 can be accurately moved to a position relative to the chamfering unit 36 or the hole opening unit; The guide rail 34 is also provided with chamfering units 36 on both sides, and the chamfering units 36 are used to process chamfers at the opening positions of the flange 101; like Figure 2 As shown, chamfering units 36 are symmetrically arranged at both ends of the guide rail 34, and a hole punching unit is arranged at the middle position of the guide rail 34; when the hole punching unit at the middle position of the guide rail 34 completes punching a hole in the flange 101, the two bases 1 move to the left synchronously, and the flange 101 of the left base 1 is the flange 101 that has been punched, and then the edge position of the fixed hole is chamfered, while the flange 101 on the right base 1 is the new flange 101 to be processed; The set chamfering unit 36 has basically the same structure as the opening unit. The only difference between the two is that a chamfering drill bit is installed on the chamfering unit 36, and a boring rod 6 is installed on the opening unit. Moreover, the chamfering unit 36 and the opening unit perform the same steps. The chamfering takes less time than the boring. After the chamfering of the left flange 101 is completed, the blanking of the flange 101 can be carried out, and then the feeding of the flange 101 is carried out immediately. At the end of the feeding, it is exactly the time when the boring of the right flange 101 is completed. Then, the two bases 1 move synchronously to the right along the guide rail 34. The left flange 101 moves to a position opposite to the opening unit for boring operation, and the right flange 101 that has been bored moves to the right end of the guide rail 34 for chamfering operation. This flange boring device not only achieves the purpose of boring processing, but also can chamfer the opened fixed holes. At the same time, chamfering and boring do not interfere with each other and can be operated in parallel. Moreover, during the boring time period, chamfering, blanking and feeding operations can be carried out, and the efficiency is further improved.

[0030] Refer to Figures 1-16 , a limiting plate 37 is symmetrically arranged on the outer ring at the other end of each extension body 19; a base block 38 is arranged at the inner bottom of the placing groove 10, a limiting groove 39 is opened on the upper surface of the base block 38, the extension body 19 is installed in the placing groove 10, and the limiting plate 37 is embedded in the limiting groove 39; through the cooperation of the limiting plate 37 and the limiting groove 39, the rotation of the supporting assembly is restricted, thereby restricting the rotation of the flange 101. When the flange 101 after boring is moved from the middle position of the guide rail 34 to one end position, the deflection of the flange 101 is restricted by the limiting plate 37, so that the chamfering drill bit can accurately face the opened fixed hole, ensuring the processing of high-precision chamfers.

[0031] Refer to Figures 1-10 , guide rods 40 are arranged at the same side position of the two bases 1; a guide groove 41 is opened on the side wall of the sliding plate 4 opposite to the base 1, and the guide rods 40 are embedded in the guide groove 41 for sliding. The base 1 moves back and forth along the guide rail 34, while the guide rods 40 slide along the inside of the guide groove 41 to restrict the movement of the base 1, ensuring the straightness of the movement of the base 1, which helps to improve the chamfering processing accuracy.

[0032] In summary, in the present invention, the designed flange hole-opening device divides the drill rod 6 for hole opening into two groups, and each group of drill rods 6 is installed in the end housing 5, so that there is enough space in the end housing 5 to install the driving power source for driving the drill rod 6 to rotate. At the same time, the two groups of drill rods 6 open holes in the flange 101 synchronously, which can double the hole-opening processing efficiency of the flange 101. In addition, a chamfering unit 36 is provided to cooperate with the hole-opening unit, which can chamfer the opened fixing holes. At the same time, chamfering and hole opening do not interfere with each other and can be operated in parallel. Moreover, during the hole-opening period, chamfering, blanking, and loading operations are carried out, and the efficiency is further improved.

[0033] The foregoing has shown and described 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. The above embodiments and the descriptions in the specification only illustrate 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 the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A flange hole-opening device, characterized in that: It includes a base, on which two support plates for mounting flanges are symmetrically arranged, and a plurality of relief holes for the drill rods to pass through are formed on each support plate; On both sides of the base, an opening unit is provided. The opening unit includes a sliding plate. On each sliding plate, an end shell is slidably connected. On the end face of the end shell opposite to the support plate, a plurality of drill rods are evenly arranged. The end of each drill rod penetrates into the end shell and is connected to a motor in the end shell that drives the drill rod to rotate. And the drill rods on the two end shells are staggered; the positions of the relief holes on the support plate match the positions of the drill rods; the motor drives the drill rods to rotate, and the end shell drives the drill rods to slide along the direction of the sliding plate. The drill rods penetrate through the relief holes to drill the flange.

2. The flange hole opening device according to claim 1, wherein: The bottom of each support plate is slidably connected to the base; On the side wall of each end shell opposite to the support plate, a preloading assembly is provided. The preloading assembly includes an elastic telescopic rod fixed on the end shell. The end of the elastic telescopic rod is fixed with a pressing plate, and a plurality of first holes for the drill rods to pass through are formed on the pressing plate.

3. The flange hole-opening device according to claim 2, characterized in that: At the middle position between the two support plates, a placement groove is formed. The placement groove penetrates upward through the top of the support plate. And between the two placement grooves, a support assembly for supporting the flange is provided. The support assembly includes a support block. A rotating hole is formed at the center position of the support block. A rotating groove is formed inside the support block. The rotating groove and the rotating hole are coaxially arranged. A rotating body is arranged in the rotating hole and the rotating groove. A plurality of convex parts are arranged on the outer ring of the rotating body. A hexagonal groove is formed at the end of the rotating body; A plurality of arc-shaped top plates are evenly arranged on the outer ring of the support block. A sliding rod is fixed on the inner side wall of the top plate. The end of the sliding rod penetrates into the rotating groove. By rotating the rotating body, the convex part pushes the sliding rod outwards, and the top plate presses the inner ring of the flange.

4. The flange hole opening device according to claim 3, characterized in that: A plurality of clamping openings are formed on the outer rings at both ends of the support block. And at both ends of the support block, extension bodies are provided. At the eccentric position of one end of the extension body, a plurality of clamping blocks adapted to the clamping openings are arranged. At the center position of one end of the extension body, a clamping rod adapted to the groove is arranged.

5. The flanged hole opening device according to claim 3, characterized in that: A plurality of screwed-in set screws are arranged on each support plate; a second hole for the set screw to pass through is formed on the pressing plate.

6. The flange hole-opening device according to claim 3, characterized in that: A notch is formed at the end of each sliding rod. A rubber block is arranged at the end of each convex part. The rubber block is embedded in the notch, and the convex part abuts against the end of the sliding rod.

7. A flange punching device according to claim 5, characterized in that: A cooling assembly is arranged on each pressing plate. The cooling assembly includes liquid inlet pipes arranged on both sides of the end shell. The end of the liquid inlet pipe extends to the pressing plate. And a triggering mechanism for controlling the flow of the coolant is arranged at the end of the liquid inlet pipe. And a liquid outlet pipe is communicated with the triggering mechanism. The end of the liquid outlet pipe extends above the support plate, and the liquid discharging direction of the liquid outlet pipe points to the flange.

8. The flanged hole-opening device according to claim 2, wherein: The number of bases is two. The two bases are connected together by a connecting rod. The two bases are slidably connected to the guide rails arranged at their bottoms; Chamfering units are also arranged on both sides of the guide rails. The chamfering units are used for machining chamfers at the flange opening positions.

9. The flanged hole-opening device according to claim 4, characterized in that: Limit plates are symmetrically arranged on the outer rings at the other ends of each extension body; a base block is arranged at the bottom inside the placement groove. A limit groove is formed on the upper surface of the base block. The extension body is installed in the placement groove, and the limit plate is embedded in the limit groove.

10. A flange hole opening device according to claim 8, characterized in that: Guide rods are arranged at the same side position of the two bases; a guide groove is formed on the side wall of the sliding plate opposite to the base. The guide rod is embedded in the guide groove and slides.

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