High-precision positioning tool for flange plate turning machine tool

Abstract

The invention discloses a high-precision positioning tool for a flange plate turning machine tool, and relates to the technical field of machining tools, the high-precision positioning tool comprises a workbench, a control rack arranged on the workbench, a drilling machine body arranged on the control rack, and a supporting frame installed on the workbench in a mirror image mode; flanges with different diameters and thicknesses are clamped in a self-adaptive mode through the metal elastic pieces and the clamping plates which are arranged in a mirror image mode, the angle can be freely adjusted in the flange clamping process through the clamping components during work of the motor, drilling can be conveniently conducted on different parts of the flange, the balls are popped out to make contact with the surfaces of the flanges by reducing the clamping force, and the machining precision is improved. The punching position of the flange plate can be adjusted more conveniently through rolling of the balls, after the flange plate is rotated to adjust the punching position, the flange plate is further clamped, rapid clamping and positioning of the flange plate are achieved, clamping of the flange does not need to be loosened in the flange rotating process, and compared with the prior art, the flange clamping device has the advantages of being higher in adaptability, more comprehensive in angle adjustment, high in safety and the like.

Description

Technical Field

[0001] This invention relates to the field of machining tooling technology, specifically a high-precision positioning tooling for a flange turning machine tool. Background Technology

[0002] As is well known, a flange is a disc-shaped metal connector. Its core function is to achieve a detachable connection of pipes, valves, equipment, and other components through the cooperation of the surrounding bolt holes and sealing gaskets. It has structural stability and sealing performance. According to its structure, it can be divided into various types such as flat welding, butt welding, and threaded. The sealing surface design includes flat, raised face, and other forms to adapt to different media environments. After the flange is manufactured, it needs to be processed by machining tools such as drilling or grinding. During the processing, positioning devices are used to clamp and fix the flange to maintain its stability during processing, making the processing more accurate and improving the product qualification rate.

[0003] Because flanges come in a wide variety of specifications, there are also many types of positioning fixtures used on flange turning machines. Most factories use positioning equipment that matches the flange model to position the flange. However, a factory may produce multiple types of flanges, and using different types of positioning fixtures not only increases costs but also makes them more cumbersome to use. Currently, most positioning equipment on the market can also adaptively clamp flanges of different diameters. For example, by using clamping rods distributed at equal angles, the clamping rods can be moved towards the center to clamp and position flanges of different diameters. There are also equipment that uses densely arranged elastic clamping rods to position the flange vertically, meeting the production needs of flanges of many specifications.

[0004] These positioning fixtures have advantages such as adjustability and quick and simple operation, but there are still some problems in their use:

[0005] 1. The clamping rods, which are distributed at equal angles, move synchronously toward the center, which can clamp flanges of different diameters. However, it cannot clamp flanges vertically, so it is not suitable when drilling holes in the side wall of the flange is required.

[0006] 2. The system uses a mirror-symmetrical arrangement of elastic clamping rods to achieve multi-directional clamping through relative movement. It can accommodate flanges of different diameters and can also be vertically fixed, making it highly adaptable. However, the main problem is that when adjusting the drilling position by rotating the flange, it is necessary to frequently loosen and re-clamp the flange. The clamping force is relatively large, and the operator's hands frequently enter the clamping area, posing a safety hazard of mechanical crushing.

[0007] Therefore, this invention proposes a high-precision positioning fixture for flange turning machine tools. Summary of the Invention

[0008] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide a high-precision positioning fixture for flange turning machine tools, thereby solving the problem mentioned in the background art of how to clamp flanges at arbitrary angles and adjust the drilling position without frequently releasing the clamping mechanism.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a high-precision positioning fixture for a flange turning machine tool, comprising a worktable, a control frame mounted on the worktable, a drilling machine body mounted on the control frame, and a support frame mirror-mounted on the worktable, and further comprising:

[0010] The motor is installed on one side of the support frame, the electric push rod is set at one end of the motor's rotating shaft, the push rod column is fixed to one end of the electric push rod, and the hydraulic cylinder is sleeved on one end of the push rod column.

[0011] A clamping component located below the drilling machine body, whose flange angle can be adjusted arbitrarily according to processing requirements;

[0012] A stabilizing component that is mirrored on the upper and lower sides of the clamping component and adaptively clamps based on the flange thickness, and a control rod that is mirrored on the upper and lower sides of the hydraulic cylinder for automatically driving the stabilizing component to clamp.

[0013] The clamping component includes a metal spring that adapts to the clamping flange based on its own memory.

[0014] The metal spring is provided with balls that assist in the rotation of the flange;

[0015] The stabilizing components include a clamping plate to reinforce the flange and prevent it from falling off.

[0016] Preferably, a bearing is embedded on one side of the support frame, and the motor shaft passes through the support frame via the bearing;

[0017] The outer wall of the motor's rotating shaft is fixedly connected to the inner ring of the bearing.

[0018] Preferably, a limit ring is fixedly connected to one side of the hydraulic cylinder;

[0019] The limiting ring has a groove inside, and a first spring is fixedly installed on the inner wall of the groove.

[0020] One end of the first spring is fixedly connected to a limit block;

[0021] One side of the limiting block is an inclined surface;

[0022] The outer wall of the limiting block is slidably connected to the inner wall of the groove.

[0023] Preferably, a limiting groove is mirror-shaped on the outer wall of the push rod column;

[0024] One end of the limiting block extends into the interior of the limiting groove, and the limiting block and the limiting groove are slidably connected.

[0025] Preferably, a threaded channel is provided on one side of the limiting ring, and the threaded channel communicates with the groove;

[0026] The inner wall of the threaded channel is threaded with a threaded rod.

[0027] A limiting piece is fixedly sleeved at one end of the threaded rod that extends into the groove.

[0028] Preferably, a first sealing plug is fixedly connected to one end of the push rod column;

[0029] The outer wall of the first sealing plug is slidably connected to the inner wall of the oil cylinder;

[0030] A connecting plate is fixedly connected to the other side of the hydraulic cylinder;

[0031] A connecting rod is slidably sleeved on the connecting plate;

[0032] One end of the connecting rod extends into the interior of the oil cylinder and is slidably connected to the oil cylinder;

[0033] A sealing plate is fixedly connected to one end of the connecting rod that extends into the oil cylinder;

[0034] The sealing plate is composed of a support rod and an arc-shaped plate, and the outer wall of the arc-shaped plate is slidably connected to the inner wall of the oil cylinder.

[0035] The inner wall of the oil cylinder has an oil outlet channel, and the oil outlet channel is blocked by a sealing plate.

[0036] Preferably, the clamping component further includes an elastic telescopic rod that rotates on one side of the connecting plate, one end of which is rotatably connected to the outer wall of the metal spring sheet;

[0037] The metal spring sheet has an arc-shaped structure;

[0038] A through groove is provided on one side of the metal spring, and the ball is slidably sleeved with the through groove;

[0039] The ball is composed of a spherical shell and steel balls, with the steel balls extending to the outside of the shell;

[0040] A second spring is fixedly connected to the outer wall of the ball, and one end of the second spring is fixedly connected to one side of the connecting plate.

[0041] Preferably, the inner wall of the metal spring is provided with an arc-shaped groove, and the inner wall of the arc-shaped groove is provided with a sliding channel;

[0042] One end of the connecting rod is slidably connected to the sliding channel;

[0043] The connecting rod is fixedly connected to a limiting plate at one end that passes through the metal spring sheet;

[0044] A third spring is fixedly installed on the outer wall of the metal spring, and one end of the third spring is fixedly connected to one side of the connecting plate.

[0045] Preferably, the outer wall of the hydraulic cylinder is fixedly mounted with a first oil pipe and a second oil pipe in a mirror image;

[0046] Both the first and second oil pipes have oil ports on their inner walls.

[0047] The inner wall of the first oil pipe is slidably connected to a second sealing plug, and the inner wall of the second oil pipe is slidably connected to a third sealing plug.

[0048] Preferably, the outer wall of the second oil pipe has a vertical channel, and the control rod is slidably sleeved with the vertical channel;

[0049] One end of the control rod extending into the second oil pipe is fixedly connected to the third sealing plug;

[0050] The other end of the control rod is fixedly connected to the outer wall of the clamping plate.

[0051] Compared with the prior art, the beneficial effects of the present invention are:

[0052] 1. This invention uses mirrored metal springs to clamp flanges of different diameters, and mirrored clamping plates to clamp flanges of different thicknesses. The two clamping plates securely clamp the top and bottom of the flange, further improving stability and avoiding the need for excessive clamping force that could cause wear on the flange's outer wall. The motor's operation allows for arbitrary angle adjustment during flange clamping via the clamping components, facilitating drilling at different parts of the flange. By reducing the clamping force, the ball bearings are ejected and contact the flange surface, making it easier to adjust the drilling position. After adjusting the drilling position by rotating the flange, the flange is further clamped, achieving rapid flange clamping and positioning. This flange rotation process does not require releasing the clamp, offering advantages such as higher adaptability, more comprehensive angle adjustment, and higher safety compared to existing technologies.

[0053] 2. Several balls are evenly distributed on the metal spring and the clamping plate. The ball in the middle of the metal spring is movable and supported by the second spring. When the inner wall of the metal spring is tightly fitted with the flange, the ball in the middle of the metal spring will retract, so that the inner wall of the metal spring is tightly fitted with the flange when it clamps the flange firmly. The bottom of the clamping plate is evenly provided with mounting grooves, and the balls slide inside the mounting grooves. In addition, when the clamping plate clamps the flange, the balls will be subjected to a reaction force that squeezes the spring and retracts into the mounting groove. The surface of the clamping plate is in complete contact with the surface of the flange, thereby increasing the contact area and friction when clamping the flange, thus improving stability. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention.

[0055] Figure 2 This is a schematic diagram of the overall structure of the flange horizontal clamping of the present invention.

[0056] Figure 3 This is a schematic diagram of the overall structure of the flange oblique clamping of the present invention.

[0057] Figure 4 This is a schematic diagram of the overall structure of the flange vertical clamping according to the present invention.

[0058] Figure 5 This is a partial structural diagram of the flange horizontal clamping method of the present invention.

[0059] Figure 6 This is a partial structural diagram of the oblique clamping of the flange according to the present invention.

[0060] Figure 7 This is a partial structural diagram of the vertical clamping of the flange according to the present invention.

[0061] Figure 8 This is a first-view schematic diagram of the clamping component in this invention.

[0062] Figure 9 for Figure 8 Enlarged view of the structure at point A in the middle.

[0063] Figure 10 This is a second-view schematic diagram of the clamping component in this invention.

[0064] Figure 11 This is a cross-sectional view of the hydraulic cylinder, the first oil pipe, and the second oil pipe in this invention.

[0065] Figure 12 This is a schematic diagram of the connecting rod in this invention.

[0066] Figure 13 for Figure 11Enlarged view of the structure at point B.

[0067] Figure 14 This is a schematic diagram showing the state of relative clamping of the clamping plates in this invention.

[0068] Figure 15 This is a schematic diagram of the threaded rod in this invention.

[0069] Figure 16 This is a schematic diagram of the ball bearing structure in this invention.

[0070] Figure 17 This is a schematic diagram of the flange without drilled holes.

[0071] Figure 18 This is a schematic diagram of the structure after drilling holes in the flange.

[0072] In the diagram: 1. Workbench; 2. Control frame; 3. Drilling machine body; 4. Clamping plate; 5. Support frame; 6. Motor; 7. Electric push rod; 8. Push rod column; 81. First sealing plug; 82. Limiting groove; 9. Hydraulic cylinder; 91. Limiting ring; 92. First spring; 93. Limiting block; 94. Threaded rod; 10. Connecting plate; 101. Elastic telescopic rod; 102. Metal spring; 103. Ball bearing; 104. Second spring; 11. Connecting rod; 111. Sealing plate; 112. Limiting plate; 113. Third spring; 12. First oil pipe; 121. Second sealing plug; 122. Second oil pipe; 123. Third sealing plug; 124. Control rod. Detailed Implementation

[0073] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0074] Please see Figures 1 to 18 This invention provides a technical solution: a high-precision positioning fixture for a flange turning machine tool, comprising a worktable 1, a control frame 2 mounted on the worktable 1, a drilling machine body 3 mounted on the control frame 2, and a support frame 5 mirror-mounted on the worktable 1, and further comprising:

[0075] The motor 6 is installed on one side of the support frame 5, the electric push rod 7 is set at one end of the rotating shaft of the motor 6, the push rod column 8 is fixed to one end of the push rod head of the electric push rod 7, and the oil cylinder 9 is sleeved on one end of the push rod column 8.

[0076] A clamping component located below the drilling machine body 3, whose flange angle can be adjusted arbitrarily according to processing requirements;

[0077] A stabilizing component that is mirrored on the upper and lower sides of the clamping component and adaptively clamps based on the flange thickness, and a control rod 124 that is mirrored on the upper and lower sides of the hydraulic cylinder 9 for automatically driving the stabilizing component to clamp.

[0078] The clamping components include a metal spring 102 that adapts to the clamping flange based on its own memory;

[0079] The metal spring 102 is provided with ball bearings 103 that assist in the rotation of the flange;

[0080] The stabilizing components include a clamping plate 4 to reinforce the flange and prevent it from falling off.

[0081] In practice, the control frame 2, the drilling machine body 3, the motor 6 and the electric push rod 7 are all existing devices, which will not be explained in detail here. The control frame 2 and the drilling machine body 3 can be adjusted in height and horizontal position. The high-speed rotation of the drill bit on the drilling machine body 3 can perform drilling on the flange.

[0082] A bearing is embedded on one side of the support frame 5, and the rotating shaft of the motor 6 passes through the support frame 5 through the bearing;

[0083] The outer wall of the rotating shaft of motor 6 is fixedly connected to the inner ring of the bearing.

[0084] In practice, the motor 6 is mounted on the support frame 5 via a bracket. The operation of the motor 6 can drive the electric push rod 7 to rotate. Therefore, after the clamping component firmly clamps the flange, the angle of the flange can be adjusted arbitrarily according to the processing requirements.

[0085] A limit ring 91 is fixedly connected to one side of the hydraulic cylinder 9;

[0086] The inner mirror of the limiting ring 91 has a groove, and the inner wall of the groove is fixedly installed with a first spring 92;

[0087] One end of the first spring 92 is fixedly connected to a limit block 93;

[0088] One side of the limiting block 93 is a slope;

[0089] The outer wall of the limiting block 93 is slidably connected to the inner wall of the groove.

[0090] In specific implementation, the side of the limiting block 93 relative to the electric push rod 7 is inclined, and the side relative to the clamping component is also inclined. When the inclined surface of the limiting block 93 is subjected to force, it can play a guiding role, and the limiting block 93 will retract towards the inner wall of the groove. When the straight surface of the limiting block 93 is subjected to force, it will play a limiting role and will not retract towards the inner wall of the groove.

[0091] A limiting groove 82 is mirror-shaped on the outer wall of the push rod column 8;

[0092] One end of the limiting block 93 extends into the interior of the limiting groove 82, and the limiting block 93 is slidably connected to the limiting groove 82.

[0093] In practice, when the push rod head of the electric push rod 7 extends and drives the push rod column 8 to move, the limiting block 93 will retract, and the push rod column 8 will not be limited by the limiting block 93. When the push rod head of the electric push rod 7 retracts and drives the push rod column 8 to reset, after the push rod column 8 moves a certain distance, the vertical surface of the limiting block 93 contacts the inner wall of the limiting groove 82. Therefore, the push rod column 8 will be limited by the limiting block 93, which will drive the oil cylinder 9 to move together.

[0094] A threaded channel is mirror-image-opened on one side of the limiting ring 91, and the threaded channel communicates with the groove;

[0095] The inner wall of the threaded channel is threaded with a threaded rod 94;

[0096] The threaded rod 94 extends into the groove and is fixedly fitted with a limiting piece at one end.

[0097] In practical implementation, the limiting piece can play a limiting role, preventing the threaded rod 94 from disengaging from the limiting ring 91 when rotating the threaded rod 94.

[0098] One end of the push rod 8 is fixedly connected to a first sealing plug 81;

[0099] The outer wall of the first sealing plug 81 is slidably connected to the inner wall of the oil cylinder 9;

[0100] A connecting plate 10 is fixedly connected to the other side of the hydraulic cylinder 9;

[0101] A connecting rod 11 is slidably sleeved on the connecting plate 10;

[0102] One end of the connecting rod 11 extends into the interior of the oil cylinder 9 and is slidably connected to the oil cylinder 9;

[0103] A sealing plate 111 is fixedly connected to one end of the connecting rod 11 that extends into the oil cylinder 9;

[0104] The sealing plate 111 is composed of a support rod and an arc-shaped plate, and the outer wall of the arc-shaped plate is slidably connected to the inner wall of the oil cylinder 9;

[0105] The inner wall of the oil cylinder 9 has an oil outlet channel, and the sealing plate 111 blocks the oil outlet channel.

[0106] In practice, the sealing plate 111 seals the oil outlet channel, preventing the oil inside the cylinder 9 from being discharged. Therefore, when the push rod 8 moves, it will first drive the metal spring 102 to clamp the outer wall of the flange through the cylinder 9 and the connecting plate 10.

[0107] The clamping component also includes an elastic telescopic rod 101 that rotates on one side of the connecting plate 10, with one end of the elastic telescopic rod 101 rotatably connected to the outer wall of the metal spring sheet 102;

[0108] The metal shrapnel 102 has an arc-shaped structure;

[0109] A through groove is provided on one side of the metal spring 102, and the ball 103 is slidably sleeved with the through groove;

[0110] The ball bearing 103 is composed of a spherical shell and steel balls, with the steel balls extending to the outside of the shell;

[0111] A second spring 104 is fixedly connected to the outer wall of the ball 103, and one end of the second spring 104 is fixedly connected to one side of the connecting plate 10.

[0112] In specific implementation, there are several balls 103, which are evenly distributed on the metal spring 102 and the clamping plate 4. The balls 103 at both ends of the metal spring 102 are fixed and will not retract. The balls 103 in the middle of the metal spring 102 are movable and supported by the second spring 104. When the inner wall of the metal spring 102 is tightly fitted with the flange, the balls 103 will retract and compress the spring. When there is a gap between the inner wall of the metal spring 102 and the flange, the balls 103 will reset through the second spring 104. The bottom of the clamping plate 4 is evenly provided with mounting grooves. The balls 103 slide inside the mounting grooves and are connected to the mounting grooves through springs. When the clamping plate 4 clamps the flange, the balls 103 will be subjected to a reaction force that compresses the springs and retracts into the mounting grooves. The surface of the clamping plate 4 is in complete contact with the surface of the flange, increasing the contact area and friction, thereby improving stability.

[0113] The inner wall of the metal spring 102 is provided with an arc-shaped groove, and the inner wall of the arc-shaped groove is provided with a sliding channel.

[0114] One end of the connecting rod 11 is slidably connected to the sliding channel;

[0115] One end of the connecting rod 11, which passes through the metal spring 102, is fixedly connected to the limiting plate 112;

[0116] A third spring 113 is fixedly installed on the outer wall of the metal spring 102, and one end of the third spring 113 is fixedly connected to one side of the connecting plate 10.

[0117] In practice, when the metal spring 102 clamps the flange tightly, the ball 103 located in the middle of the metal spring 102 will retract, thereby increasing the contact area between the metal spring 102 and the outer wall of the flange and improving the stability of the flange clamping.

[0118] The outer wall of the hydraulic cylinder 9 is fixedly mounted with a first oil pipe 12 and a second oil pipe 122.

[0119] Oil ports are provided on the inner walls of both the first oil pipe 12 and the second oil pipe 122;

[0120] The inner wall of the first oil pipe 12 is slidably connected to a second sealing plug 121, and the inner wall of the second oil pipe 122 is slidably connected to a third sealing plug 123.

[0121] In practice, the two oil ports are connected. When the second sealing plug 121 moves upward, it will squeeze the oil inside the first oil pipe 12 into the second oil pipe 122 through the oil port, causing the third sealing plug 123 to move downward.

[0122] The outer wall of the second oil pipe 122 is provided with a vertical channel, and the control rod 124 is slidably sleeved with the vertical channel;

[0123] One end of the control lever 124 extends into the second oil pipe 122 and is fixedly connected to the third sealing plug 123;

[0124] The other end of the control lever 124 is fixedly connected to the outer wall of the clamping plate 4.

[0125] In practice, when all the oil inside the cylinder 9 is squeezed into the first oil pipe 12, the third sealing plug 123 moves downward to its maximum extent and is above the vertical channel, so there will be no oil leakage from the vertical channel inside the second oil pipe 122.

[0126] Working principle: When using this high-precision positioning fixture for flange turning machine tools, the flange to be processed is placed between two metal springs 102. The electric push rod 7 is activated, and the push rod head of the electric push rod 7 drives the hydraulic cylinder 9 and the metal springs 102 to move towards the flange. The metal springs 102 will contact the outer wall of the flange and slowly clamp the flange. Since the forces are mutual, when the metal springs 102 are subjected to the reaction force of the flange, the push rod head of the electric push rod 7 pushes the first sealing plug 81 through the push rod column 8. The sealing plate 111 blocks the oil outlet channel on the inner wall of the hydraulic cylinder 9, and the oil cannot be discharged. Therefore, the push rod column 8 will drive the metal springs 102 to forcibly clamp the flange through the hydraulic cylinder 9, the connecting plate 10, and the elastic telescopic rod 101. The metal springs 102 are deformable and have high hardness. The metal springs 102 are deformed by the obstruction of the outer wall of the flange and finally fit against the outer wall of the flange, thus achieving the clamping of the flange.

[0127] When the metal spring 102 firmly clamps the outer wall of the flange, its inner wall will fit tightly against the flange. The connecting rod 11, under the reaction force, will drive the sealing plate 111 to move. At this time, the sealing plate 111 will no longer block the oil outlet channel on the inner wall of the oil cylinder 9. At this time, the electric push rod 7 will continue to push the first sealing plug 81, which will squeeze the oil inside the oil cylinder 9 into the inside of the first oil pipe 12 through the oil outlet channel. The oil pushes the second sealing plug 121 upward, and the oil inside the first oil pipe 12 will enter the inside of the second oil pipe 122 through the oil port and push the third sealing plug 123 downward. The third sealing plug 123 drives the control rod 124 to move downward, and the two clamping plates 4 will move in opposite directions (see reference). Figure 14 Therefore, after the two metal spring clips 102 clamp the outer wall of the flange, the two clamping plates 4 will clamp the top and bottom of the flange.

[0128] When the metal spring 102 clamps the flange tightly, the ball 103 located in the middle of the metal spring 102 will retract, thus increasing the contact area between the metal spring 102 and the outer wall of the flange, making the clamping effect better. At this time, the drilling machine body 3 is started. The drilling machine body 3 can move up and down and horizontally. After the drilling machine body 3 is aligned with the position of the flange to be drilled, it moves downward to drill the flange.

[0129] It should be noted that the flanges are marked with the areas that need to be drilled during the manufacturing process, so that the drill bit can find the required drilling location.

[0130] refer to Figure 1 - Figure 7 After drilling the top hole of the flange, when drilling holes in the bevel or outer wall of the flange is required, motor 6 is started. The rotating shaft of motor 6 drives the electric push rod 7 to rotate. At this time, the clamping components rotate together, thus allowing the flange to be angled. When drilling holes in the bevel of the flange is required, motor 6 drives the flange to rotate through the electric push rod 7, clamping components, and other structures. Figure 2 , Figure 6 As shown, when drilling is required on the outer wall of the flange, motor 6 drives the flange to rotate via electric push rod 7, clamping components, and other structures. Figure 4 , Figure 7 The state shown allows for adjustment of the flange angle to any value according to the flange processing requirements.

[0131] After drilling the part of the flange that is not in contact with the metal spring 102, when it is necessary to rotate the flange to expose the clamped surface, start the electric push rod 7 to retract. The electric push rod 7 drives the push rod column 8 to move towards the motor 6. The push rod column 8 drives the first sealing plug 81 to reset a certain distance. The first sealing plug 81 will draw a small amount of oil pushed into the first oil pipe 12 back to the oil cylinder 9 through negative pressure. Through the same principle, the second sealing plug 121 moves upward a small distance. Therefore, the two clamping plates 4 will move a small distance in opposite directions. At this time, the ball bearing 103 on the clamping plate 4 will be ejected by the spring, and the steel ball on the ball bearing 103 will contact the flange surface.

[0132] As the push rod 8 continues to retract, the side wall of the limiting block 93 contacts the inner wall of the limiting groove 82. The push rod 8 is limited by the side of the limiting block 93, and will drive the oil cylinder 9 and the clamping component to move a small distance together through the limiting ring 91. At this time, the two ends of the metal spring 102 are still tightly attached to the outer wall of the flange through elasticity, while the inner wall of the metal spring 102 and the outer wall of the flange will have a small gap. At this time, the ball 103 located in the middle of the metal spring 102 will be reset by the second spring 104. The ball 103 contacts the outer wall of the flange. At this time, the top, bottom and outer wall of the flange are all in contact with the ball 103, so the flange can be rotated to expose the clamped surface of the flange.

[0133] After exposing the clamped surface of the flange, the electric push rod 7 is activated again to extend the push rod head of the electric push rod 7. At this time, the first sealing plug 81 is pushed by the push rod column 8. Through the same principle, the metal spring 102 and the clamping plate 4 firmly clamp the outer wall of the flange again, and the drilling machine body 3 can then drill holes in the flange.

[0134] After the entire flange is drilled, when drilling the next flange, the push rod head of the electric push rod 7 continues to retract, and the first sealing plug 81 will draw a large amount of oil back to the oil cylinder 9 through negative pressure. At this time, the clamping plate 4 gradually resets, and there is a large gap between the clamping plate 4 and the metal spring 102. At this time, the flange can be removed by moving it up or down. The next flange is placed between the two metal springs 102, and the electric push rod 7 is started to extend its push rod head. The flange is clamped by the same principle, and the drilling work can continue.

[0135] After processing a batch of flanges of the same specification, when clamping flanges of different specifications is required, the threaded rod 94 is rotated, and the threaded rod 94 slowly moves towards the limiting block 93. The limiting block 93 has an inclined surface on one side relative to the threaded rod 94. Therefore, one end of the threaded rod 94 will drive the limiting block 93 to retract into the groove of the inner wall of the limiting ring 91 through the inclined surface of the limiting block 93. At this time, the push rod column 8 is no longer limited by the limiting block 93. The retraction of the push rod head of the electric push rod 7 can drive the push rod column 8, connecting rod 11, metal spring 102, clamping plate 4 and other structures to reset, which is convenient for processing the next batch of flanges.

[0136] It should be noted that after clamping the flanges of the next batch, the threaded rod 94 is rotated in the opposite direction to reset the threaded rod 94. The limit block 93 can be reset by the first spring 92. The swing head clamps the flanges through the same working principle as above.

[0137] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision positioning fixture for a flange turning machine tool, comprising a worktable (1), a control frame (2) mounted on the worktable (1), a drilling machine body (3) mounted on the control frame (2), and a support frame (5) mirror-mounted on the worktable (1), characterized in that: Also includes: The motor (6) installed on one side of the support frame (5), the electric push rod (7) set at one end of the rotating shaft of the motor (6), the push rod column (8) fixed at one end of the electric push rod (7), and the oil cylinder (9) sleeved on one end of the push rod column (8); A clamping component located below the drilling machine body (3) with an adjustable flange angle based on processing requirements; A stabilizing component with adaptive clamping based on flange thickness is mirrored on the upper and lower sides of the clamping component, and a control rod (124) with mirrored arrangement on the upper and lower sides of the oil cylinder (9) is used for automatic driving of the stabilizing component clamping. The clamping component includes a metal spring (102) that adapts to the clamping flange based on its own memory. The metal spring (102) is provided with balls (103) to assist the rotation of the flange. The stabilizing components include a clamping plate (4) for reinforcing the flange to prevent it from falling off.

2. The high-precision positioning fixture for a flange turning machine tool according to claim 1, characterized in that: A bearing is embedded on one side of the support frame (5), and the rotating shaft of the motor (6) passes through the support frame (5) through the bearing. The outer wall of the rotating shaft of the motor (6) is fixedly connected to the inner ring of the bearing.

3. The high-precision positioning fixture for a flange turning machine tool according to claim 1, characterized in that: A limit ring (91) is fixedly connected to one side of the oil cylinder (9); The limiting ring (91) has a groove inside, and a first spring (92) is fixedly installed on the inner wall of the groove. One end of the first spring (92) is fixedly connected to a limit block (93); One side of the limiting block (93) is an inclined surface; The outer wall of the limiting block (93) is slidably connected to the inner wall of the groove.

4. A high-precision positioning fixture for a flange turning machine tool according to claim 3, characterized in that: The outer wall of the push rod column (8) is mirror-image-formed with a limiting groove (82); One end of the limiting block (93) extends into the interior of the limiting groove (82), and the limiting block (93) and the limiting groove (82) are slidably connected.

5. A high-precision positioning fixture for a flange turning machine tool according to claim 4, characterized in that: The limiting ring (91) has a threaded channel on one side, and the threaded channel communicates with the groove; The inner wall of the threaded channel is threaded with a threaded rod (94). The threaded rod (94) extends into the groove and is fixedly fitted with a limiting piece at one end.

6. A high-precision positioning fixture for a flange turning machine tool according to claim 1, characterized in that: One end of the push rod (8) is fixedly connected to a first sealing plug (81); The outer wall of the first sealing plug (81) is slidably connected to the inner wall of the oil cylinder (9); A connecting plate (10) is fixedly connected to the other side of the oil cylinder (9); A connecting rod (11) is slidably sleeved on the connecting plate (10); One end of the connecting rod (11) extends into the interior of the oil cylinder (9) and is slidably connected to the oil cylinder (9); A sealing plate (111) is fixedly connected to one end of the connecting rod (11) that extends into the oil cylinder (9); The sealing plate (111) is composed of a support rod and an arc plate, and the outer wall of the arc plate is slidably connected to the inner wall of the oil cylinder (9); The inner wall of the oil cylinder (9) is provided with an oil outlet channel, and the sealing plate (111) blocks the oil outlet channel.

7. A high-precision positioning fixture for a flange turning machine tool according to claim 6, characterized in that: The clamping component also includes an elastic telescopic rod (101) that rotates on one side of the connecting plate (10), one end of which is rotatably connected to the outer wall of the metal spring sheet (102); The metal spring (102) has an arc-shaped structure; A through groove is provided on one side of the metal spring (102), and the ball (103) is slidably sleeved with the through groove; The ball (103) is composed of a spherical shell and steel balls, with the steel balls extending to the outside of the shell; The outer wall of the ball (103) is fixedly connected to a second spring (104), and one end of the second spring (104) is fixedly connected to one side of the connecting plate (10).

8. A high-precision positioning fixture for a flange turning machine tool according to claim 7, characterized in that: The inner wall of the metal spring (102) is provided with an arc-shaped groove, and the inner wall of the arc-shaped groove is provided with a sliding channel. One end of the connecting rod (11) is slidably sleeved with the sliding channel; The connecting rod (11) is fixedly connected to a limiting plate (112) through one end of the metal spring sheet (102). A third spring (113) is fixedly installed on the outer wall of the metal spring (102), and one end of the third spring (113) is fixedly connected to one side of the connecting plate (10).

9. A high-precision positioning fixture for a flange turning machine tool according to claim 8, characterized in that: The outer wall of the oil cylinder (9) is fixedly mounted with a first oil pipe (12) and a second oil pipe (122). Oil ports are provided on the inner walls of both the first oil pipe (12) and the second oil pipe (122); The inner wall of the first oil pipe (12) is slidably connected to a second sealing plug (121), and the inner wall of the second oil pipe (122) is slidably connected to a third sealing plug (123).

10. A high-precision positioning fixture for a flange turning machine tool according to claim 9, characterized in that: The outer wall of the second oil pipe (122) is provided with a vertical channel, and the control rod (124) is slidably sleeved with the vertical channel; The control rod (124) extends into the second oil pipe (122) and is fixedly connected to the third sealing plug (123); The other end of the control rod (124) is fixedly connected to the outer wall of the clamping plate (4).

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