A flange machining drilling device

Abstract

The application relates to the technical field of flange processing equipment, in particular to a drilling device for flange processing. The device comprises a base, a stand, a Z-axis stroke assembly, a drilling assembly, a control box, a stroke mechanism, a fixing rod, a rotating mechanism and a clamping mechanism. The rotating mechanism is driven by a first motor to mesh with a first gear and an outer tooth ring, drives the outer rotating ring and the rotating disc to rotate, and realizes automatic and accurate indexing of the circumferential hole of the flange. In the clamping mechanism, a second motor drives the umbrella-shaped gear plate to rotate by meshing with a second gear and a third gear, the umbrella-shaped gear plate is simultaneously meshed with multiple bevel gears to drive the lead screws to rotate synchronously, drives the clamping blocks to move synchronously to realize the centering and clamping of the flange. The electromagnet, the air cylinder and the spring are matched to switch the umbrella-shaped gear plate and the bevel gear between the meshing and disengaging states, so that the lead screw is prevented from loosening during indexing. The device can complete automatic indexing and drilling of flanges of different specifications without complex programming, is simple to operate, has high machining precision and reliable clamping.

Description

Technical Field

[0001] This invention relates to the field of flange processing equipment technology, specifically to a drilling device for flange processing. Background Technology

[0002] As a key component in pipe connections, equipment connections, and valve installation, the machining accuracy of the circumferential mounting holes of flanges directly affects assembly quality and operational reliability. In the flange manufacturing process, drilling the circumferentially divided holes is one of the most critical steps; the positional and dimensional accuracy of the holes directly determines the flange's connection strength and sealing performance.

[0003] Currently, the drilling of circumferential holes in flanges mainly relies on two methods: CNC machine tools and conventional drilling machines. When using CNC machine tools, operators need to create separate machining programs and set corresponding drilling and indexing parameters for flanges of different specifications (different diameters, different numbers of holes, different hole spacings). However, flange products have a wide variety of specifications and models, and the number of holes, hole diameters, pitch circle diameters, and hole spacings of flanges of different sizes are all different. Each specification requires separate programming and parameter settings. In this process, parameter entry is tedious and prone to errors due to negligence. Once a programming error occurs, it will directly cause the scrapping of a batch of products. At the same time, during long-term continuous machining, complex machining programs are prone to bugs or control command drift due to factors such as system resource consumption and accumulated errors in data processing. This causes the machining accuracy to gradually deviate from the set value, the hole position deviation to increase, and seriously affect the machining quality of the flanges. In addition, CNC equipment has high purchase costs and expensive maintenance costs, and also requires a high level of technical skills from operators, making it difficult for small and medium-sized flange processing enterprises to widely equip themselves with it.

[0004] When machining flanges using conventional drilling machines, circumferential indexing and positioning typically rely on manual marking by the operator or simple indexing fixtures. The accuracy of the drilling position is highly dependent on the operator's skill and experience. Manual marking suffers from significant visual and cumulative errors, making it difficult to guarantee indexing accuracy. Furthermore, after machining each hole, the flange needs to be manually rotated and repositioned, which is cumbersome and inefficient. On the other hand, the flange is subjected to significant cutting torque and axial force during drilling. If the clamping force is insufficient or the clamping method is improper, the flange is prone to lateral swaying or circumferential rotation. Excessive clamping force, on the other hand, may leave indentations on the flange surface or cause deformation of thin-walled flanges. Existing flange machining methods are prone to positional misalignment, and long-term use leads to fixture wear, resulting in unstable clamping accuracy and a gradual accumulation of clamping errors, further reducing the positional accuracy of the drilling and causing quality problems such as hole deviation and inconsistent hole spacing, resulting in a high scrap rate. Therefore, improvements are needed. Summary of the Invention

[0005] The purpose of this invention is to provide a drilling device for flange processing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for flange processing, comprising a base, a column fixedly connected to the rear top of the base, a Z-axis travel assembly mounted on the front side of the column, a drilling assembly mounted on the front side of the Z-axis travel assembly, a control box mounted on the rear side of the column, a travel mechanism mounted on the front top of the base, a fixed rod mounted on the top of the travel mechanism, a rotating mechanism mounted on the top of the fixed rod, and a clamping mechanism mounted on the top of the rotating mechanism; The rotating mechanism includes a locking block that is engaged between fixed rods. A chassis is fixedly connected to the top of the locking block. An inner rotating ring is fixedly connected to the top of the locking block. An outer rotating ring is rotatably connected to the outside of the inner rotating ring. A rotating disk is fixedly connected to the top of the outer rotating ring. An external gear ring is fixedly connected to the outer wall of the outer rotating ring. A first gear meshes with the front side of the external gear ring. A first motor is fixedly connected to the middle of the first gear. A fixed frame is fixedly connected to the outside of the first motor. The rear side of the fixed frame is fixedly connected to the bottom of the chassis. The clamping mechanism includes an umbrella-shaped base plate, which is fixedly connected to the top of a rotating disk. Adjacent rotating disks are fixedly connected to fixed blocks. A lead screw is rotatably connected to the center of each fixed block. A moving block is threadedly connected to the lead screw near its center. A clamping block is inserted into the top of the moving block. A bevel gear is fixedly connected to one end of the lead screw. An umbrella-shaped gear meshes with the bottom of the bevel gear. A telescopic inner rod is fixedly connected to the bottom of the umbrella gear. A telescopic outer rod is slidably connected to the outer wall of the telescopic inner rod. The bottom of the telescopic outer rod is rotatably connected to the center of the chassis. A third gear is fixedly connected to the top of the telescopic inner rod. A second gear meshes with the front of the third gear. A second motor is fixedly connected to the center of the second gear. A cylinder is fixedly connected to the top of the chassis behind the third gear. An electromagnet is fixedly connected to the top of the cylinder.

[0007] Preferably, the X-axis travel assembly, Y-axis travel assembly, and Z-axis travel assembly are all composed of a motor, a lead screw, a ball nut pair, a slide rail, a mounting base, and a sliding frame. The top of the sliding frame of the Y-axis travel assembly is fixedly connected to the mounting base of the X-axis travel assembly, and the top of the sliding frame of the X-axis travel assembly is fixedly connected to a fixing rod. A drilling assembly is installed on the front side of the sliding frame of the Z-axis travel assembly.

[0008] Preferably, the drilling assembly comprises a lifting base, a motor, a pulley assembly, a rotating rod, a drill bit holder, and a drill bit. The stroke mechanism, the Z-axis stroke assembly, the drilling assembly, the first motor, and the second motor are all electrically connected to the control box.

[0009] Preferably, there are multiple fixing rods, and a ring of locking blocks is distributed between the multiple fixing rods.

[0010] Preferably, the inner rotating ring has a bottom rotating ring groove at the top, and a ball is rolled in the bottom rotating ring groove of the inner rotating ring. The outer rotating ring has a top rotating ring groove corresponding to the ball, and a ball is rolled in the top rotating ring groove. The inner rotating ring and the outer rotating ring are rotatably connected by the ball.

[0011] Preferably, a fixed sleeve is fixedly connected to the top center of the chassis, and a bearing is interference-fitted inside the fixed sleeve. The inner ring of the bearing is interference-fitted with the outer wall of the telescopic outer rod. A sliding groove is opened near the top center of the telescopic outer rod, and a sliding block is slidably connected to the top of the sliding groove. The inner side of the sliding block is fixedly connected to the outer wall of the telescopic inner rod.

[0012] Preferably, the fixed sleeve has a retaining ring threadedly connected to the top of the bearing, and the telescopic inner rod and the telescopic outer rod have springs sleeved between the retaining ring and the third gear on their outer sides.

[0013] Preferably, the bottom of the second motor is fixedly connected to the top of the chassis, the bottom of the cylinder is fixedly connected to the top of the chassis, and the top of the rotating disk is densely surrounded by umbrella-shaped base plates at equal intervals. A slot is opened in the middle of the inner side of the umbrella-shaped base plates. Limiting strips are fixedly connected to the bottom of both sides of the umbrella-shaped base plates. A mounting base is fixedly connected to the middle of the top of the rotating disk. A limiting block is fixedly connected to the outside of the mounting base to the slot. The limiting block is inserted into the slot. An insert is fixedly connected to the outside of the mounting base to the limiting strip. The limiting strip is inserted into the bottom of the insert.

[0014] Preferably, a ball nut pair is fixedly connected to the bottom center of the movable block, and the movable block is threaded to the outer wall of the lead screw through the ball nut pair. Sliding rods are slidably connected to both sides of the movable block, and one end of the sliding rod is fixedly connected to the rear side of the fixed block. Insertion holes are opened on both sides of the movable block, and a pin is inserted into the insertion hole of the movable block. The top end of the pin is fixedly connected to the bottom of the clamping block.

[0015] Preferably, elastic strips are fixedly connected to both sides of the clamping block, and inserts are fixedly connected to the side of the elastic strip away from the clamping block. A pin is fixedly connected to the bottom of the insert. Positioning holes are opened in both the fixing block and the mounting base corresponding to the pins. The inserts on the opposite side of the elastic strips of the clamping block are inserted into the positioning holes of the fixing block and the mounting base respectively through the pins. An installation hole is opened in the middle of the mounting base, and a circular baffle is threaded to the top of the installation hole.

[0016] Compared with the prior art, the present invention provides a drilling device for flange processing, which has the following advantages: 1. This flange machining drilling device, through a rotating mechanism, uses a first motor to drive a first gear to rotate. The first gear meshes with an outer gear ring, causing the outer rotating ring to rotate. The rotating disk at the top of the outer rotating ring rotates accordingly. A locking block engages with a fixed rod to ensure the stability of the chassis during rotation. The inner rotating ring is fixed to the chassis, and the outer rotating ring is rotatably connected to the inner rotating ring via ball bearings. The ball bearings roll between the bottom rotating ring groove of the inner rotating ring and the top rotating ring groove of the outer rotating ring, achieving smooth rotation of the outer rotating ring relative to the inner rotating ring while bearing the axial load generated during machining. After the flange is clamped onto the rotating disk, the control box controls the rotation angle of the first motor according to the preset number of holes and indexing angle, driving the rotating disk to rotate a fixed angle each time (e.g., 45° for 8 holes, 30° for 12 holes, etc.), so that the positions of the flange to be drilled are sequentially aligned with the drilling assembly. This achieves automatic and precise indexing of the flange's circumferential holes, avoiding visual and cumulative errors from manual marking and positioning, and solving the problems of poor indexing accuracy and cumbersome operation in ordinary drilling machine machining.

[0017] 2. This flange machining drilling device, through the installation of a clamping mechanism, uses a second motor to drive a second gear to rotate. The second gear meshes with a third gear, causing the telescopic inner rod to rotate. The bevel-shaped gear at the top of the telescopic inner rod rotates simultaneously. The bevel-shaped gear simultaneously meshes with multiple bevel gears, driving each lead screw to rotate synchronously. The lead screw drives a moving block to move along the lead screw axis. The clamping block at the top of the moving block moves synchronously with the moving block, clamping the flange from the inner hole outwards or from the outer circle inwards. The simultaneous action of each clamping block under the synchronous transmission of the bevel-shaped gear and the bevel gears achieves centering clamping of the flange, ensuring the coincidence of the flange center with the rotation center of the rotating disk. This solves the problem of flange position misalignment caused by unreasonable clamping methods in ordinary drilling machines.

[0018] 3. This flange machining drilling device, through the coordinated structure of an electromagnet, cylinder, and spring, allows for adjustment of the clamping force when necessary. The cylinder first extends, pushing the electromagnet upwards until it contacts the bottom surface of the bevel gear. Then, the electromagnet is energized, generating magnetic force to firmly attract the bevel gear. The cylinder then retracts, causing the bevel gear to move downwards against the spring force, disengaging it from the bevel gear. At this time, when the first motor drives the rotating disk for indexing, the bevel gear on the rotating disk rotates with it. The bevel gear, disengaged from the bevel gear and attracted and fixed to the base by the electromagnet, does not rotate with the rotating disk. This avoids the problem of the bevel gear passively rotating the bevel gear during indexing, preventing accidental loosening of the lead screw and ensuring the stability of the clamping state during machining. When the clamping force needs to be adjusted again, the electromagnet is de-energized and demagnetized. The bevel gear automatically rises and resets under the restoring force of the spring, re-engaging with the bevel gear. The clamping force can then be readjusted by driving the second motor. This structure enables reliable switching between clamping adjustment and indexing rotation. The electromagnet, cylinder, and spring work together to flexibly switch between engagement and disengagement between the bevel gear and the bevel plate. Simultaneously, the telescopic inner rod slides axially through a sliding block and a sliding groove in the telescopic outer rod, guiding the lifting and lowering motion of the bevel gear.

[0019] 4. This flange machining drilling device comprises a Y-axis travel assembly and an X-axis travel assembly. A fixed rod is mounted on the top of the sliding frame of the X-axis travel assembly, and the X-axis travel assembly is mounted on the top of the sliding frame of the Y-axis travel assembly. A rotating mechanism and a clamping mechanism are mounted on the fixed rod. The Y-axis travel assembly drives the X-axis travel assembly and its upper components to move along the Y-axis, while the X-axis travel assembly drives the fixed rod and its upper components to move along the X-axis, thereby causing the flange on the rotating disk to perform two-dimensional position adjustment in the horizontal plane. When machining flanges of different sizes, the coordinated movement of the Y-axis and X-axis travel assemblies aligns the center position of the flange with the drill bit of the drilling assembly, ensuring that the pitch circle diameter of each hole matches the preset value, thus achieving adaptable machining of flanges of different specifications. When machining circumferentially divided holes on a flange, the rotating mechanism directly drives the rotating disk to rotate at the preset indexing angle to complete the positioning of each hole. There is no need to write complex machining programs for each flange specification. The operator only needs to input the basic parameters such as the number of holes and the pitch circle diameter on the control box, and the system can automatically complete the drilling cycle. This avoids the cumbersome programming of CNC machine tools, the easy error in parameter input, and the program bugs and control command drift problems that may occur during long-term operation. It also reduces the difficulty of operating the equipment and the technical requirements for the operator. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort: Figure 1 This is a schematic diagram of one side of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 A schematic diagram from the rear view showing the coordination of the travel mechanism, the rotation mechanism, and the clamping mechanism; Figure 4 A bottom view diagram illustrating the coordination between the travel mechanism, the rotation mechanism, and the clamping mechanism; Figure 5 Schematic diagram of removing the telescopic cover from the travel mechanism; Figure 6 A bottom view diagram illustrating the coordination between the fixed rod and the rotating mechanism; Figure 7 A schematic diagram showing the separation of the chassis, fixing rods, and locking blocks; Figure 8 Internal schematic diagram of the clamping mechanism inside the rotating disk after removing the elastic strip; Figure 9 A bottom view diagram showing the structure of the chassis, external gear ring, first gear, rotating disk, etc. Figure 10 A schematic diagram from one side of the structure, including the chassis, external gear ring, first gear, and rotating disk. Figure 11 This is a schematic diagram of the clamping mechanism; Figure 12 A schematic diagram showing the assembly of components such as the cylinder, bevel gear, second gear, and third gear; Figure 13 A schematic diagram showing the separation of the cylinder, bevel gear, second gear, third gear, and other components. Figure 14 A top view diagram showing the coordination of adjacent sector-shaped base plates, lead screws, clamping blocks, and other structural components; Figure 15 This is a schematic diagram showing the fit of structures such as elastic sheets and clamping blocks.

[0021] In the diagram: 1. Base; 2. Travel mechanism; 21. Y-axis travel assembly; 22. X-axis travel assembly; 3. Control box; 4. Column; 5. Z-axis travel assembly; 6. Drilling assembly; 7. Fixing rod; 8. Rotating mechanism; 81. Clamping block; 811. Screw; 82. Rotating disk; 83. Chassis; 831. Fixing sleeve; 84. External gear ring; 841. First motor; 842. Fixing bracket; 843. First gear; 85. Outer rotating ring; 86. Inner rotating ring; 861. Ball bearing; 87. Mounting seat; 871. Limiting block; 88. Insertion block; 89. Circular 9. Baffle; 91. Clamping mechanism; 92. Umbrella-shaped base plate; 93. Limiting strip; 94. Bayonet; 95. Lead screw; 96. Bevel gear; 97. Umbrella-shaped gear disc; 98. Spring; 99. Telescopic inner rod; 90. Telescopic outer rod; 91. Sliding block; 92. Bearing; 90. Retaining ring; 91. Clamping block; 92. Insert post; 93. Insert plate; 94. Elastic strip; 95. Fixing block; 96. Sliding rod; 97. Moving block; 98. Cylinder; 99. Electromagnet; 90. Second motor; 991. Second gear; 992. Third gear. Detailed Implementation

[0022] 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.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] This invention provides the following technical solutions: Example 1 Please see Figure 1-15 A drilling device for flange processing includes a base 1, a column 4 fixedly connected to the rear top of the base 1, a Z-axis travel assembly 5 mounted on the front of the column 4, a drilling assembly 6 mounted on the front of the Z-axis travel assembly 5, a control box 3 mounted on the rear of the column 4, a travel mechanism 2 mounted on the front top of the base 1, a fixed rod 7 mounted on the top of the travel mechanism 2, a rotating mechanism 8 mounted on the top of the fixed rod 7, and a clamping mechanism 9 mounted on the top of the rotating mechanism 8.

[0025] The rotating mechanism 8 includes a locking block 81, which is locked between the fixed rods 7. A chassis 83 is fixedly connected to the top of the locking block 81. An inner rotating ring 86 is fixedly connected to the top of the locking block 81. An outer rotating ring 85 is rotatably connected to the outside of the inner rotating ring 86. A rotating disk 82 is fixedly connected to the top of the outer rotating ring 85. An outer toothed ring 84 is fixedly connected to the outer wall of the outer rotating ring 85. A first gear 843 meshes with the front side of the outer toothed ring 84. A first motor 841 is fixedly connected to the middle of the first gear 843. A fixed frame 842 is fixedly connected to the outside of the first motor 841. The rear side of the fixed frame 842 is fixedly connected to the bottom of the chassis 83.

[0026] The clamping mechanism 9 includes an umbrella-shaped base plate 91, which is fixedly connected to the top of the rotating disk 82. Fixed blocks 95 are fixedly connected between adjacent rotating disks 82. A lead screw 92 is rotatably connected to the middle of the fixed blocks 95. A moving block 97 is threadedly connected to the lead screw 92 near its center. A clamping block 94 is inserted into the top of the moving block 97. A bevel gear 921 is fixedly connected to one end of the inner side of the lead screw 92. An umbrella-shaped gear 93 meshes with the bottom of the bevel gear 921. A telescopic mechanism is fixedly connected to the bottom of the umbrella gear 93. The inner rod 932 is slidably connected to the outer wall of the telescopic inner rod 932, and the bottom of the telescopic outer rod 933 is rotatably connected to the middle of the chassis 83. The telescopic inner rod 932 is fixedly connected to a third gear 992 near the top, and a second gear 991 is meshed with the front side of the third gear 992. A second motor 99 is fixedly connected to the middle of the second gear 991. A cylinder 98 is fixedly connected to the top of the chassis 83 behind the third gear 992, and an electromagnet 981 is fixedly connected to the top of the cylinder 98.

[0027] The Y-axis travel assembly 21, X-axis travel assembly 22, and Z-axis travel assembly 5 are all composed of a motor, lead screw, ball bearing nut pair, slide rail, mounting base, and sliding frame. The top of the sliding frame of the Y-axis travel assembly 21 is fixedly connected to the mounting base of the X-axis travel assembly 22, and the top of the sliding frame of the X-axis travel assembly 22 is fixedly connected to the fixing rod 7. A drilling assembly 6 is installed on the front side of the sliding frame of the Z-axis travel assembly 5. The drilling assembly 6 is composed of a lifting base, motor, pulley set, rotating rod, drill bit holder, and drill bit. The travel mechanism 2, Z-axis travel assembly 5, drilling assembly 6, first motor 841, and second motor 99 are all electrically connected to the control box 3.

[0028] Multiple fixing rods 7 are provided, and a ring of locking blocks 81 is distributed among the multiple fixing rods 7. The top of the inner rotating ring 86 has a bottom rotating ring groove, and a ball bearing 861 is rolled in the bottom rotating ring groove of the inner rotating ring 86. The outer rotating ring 85 has a top rotating ring groove corresponding to the ball bearing 861, and a ball bearing 861 is rolled in the top rotating ring groove. The inner rotating ring 86 and the outer rotating ring 85 are rotatably connected through the ball bearing 861. A fixing sleeve 831 is fixedly connected to the top center of the chassis 83. A bearing 935 is interference-fitted in the fixing sleeve 831. The inner ring of the bearing 935 is interference-fitted with the outer wall of the telescopic outer rod 933. A sliding groove is opened near the top center of the telescopic outer rod 933. A sliding block 934 is slidably connected to the top of the sliding groove. The inner side of the sliding block 934 is fixedly connected to the outer wall of the telescopic inner rod 932. The fixed sleeve 831 has a retaining ring 936 threadedly connected to the top of the bearing 935. The telescopic inner rod 932 and the telescopic outer rod 933 have a spring 931 sleeved between the retaining ring 936 and the third gear 992.

[0029] The bottom of the second motor 99 is fixedly connected to the top of the chassis 83, and the bottom of the cylinder 98 is fixedly connected to the top of the chassis 83. Umbrella-shaped base plates 91 are densely arranged in a circle at equal intervals on the top of the rotating disk 82. A slot 912 is opened in the middle of the inner side of the umbrella-shaped base plate 91. Limiting strips 911 are fixedly connected to the bottom of both sides of the umbrella-shaped base plate 91. A mounting base 87 is fixedly connected to the middle of the top of the rotating disk 82. A limiting block 871 is fixedly connected to the outer side of the mounting base 87 corresponding to the slot 912. The limiting block 871 is inserted into the slot 912. An insert 88 is fixedly connected to the outer side of the mounting base 87 corresponding to the limiting strip 911. The limiting strip 911 is inserted into the bottom of the insert 88. A ball bearing nut assembly is fixedly connected to the bottom center of the movable block 97. The movable block 97 is threadedly connected to the outer wall of the lead screw 92 through the ball bearing nut assembly. Sliding rods 96 are slidably connected to both sides of the movable block 97. One end of the sliding rod 96 is fixedly connected to the rear side of the fixed block 95. Insertion holes are opened on both sides of the movable block 97. Insert pins 941 are inserted into the insertion holes of the movable block 97. The top of the insert pins 941 is fixedly connected to the bottom of the clamping block 94. Elastic strips 943 are fixedly connected to both sides of the clamping block 94. Insert pieces 942 are fixedly connected to the side of the elastic strips 943 away from the clamping block 94. Pins are fixedly connected to the bottom of the insert pieces 942. Positioning holes are opened on both the fixed block 95 and the mounting base 87 corresponding to the pins. Insert pieces 942 on the side of the elastic strips 943 away from each other on both sides of the clamping block 94 are inserted into the positioning holes of the fixed block 95 and the mounting base 87 respectively through the pins. A mounting hole is opened in the middle of the mounting base 87. A circular baffle 89 is threadedly connected to the top of the mounting hole.

[0030] In this embodiment, a rotating mechanism 8 is provided. The first motor 841 drives the first gear 843 to rotate. The first gear 843 meshes with the outer gear ring 84, causing the outer rotating ring 85 to rotate. The rotating disk 82 on the top of the outer rotating ring 85 rotates accordingly. The locking block 81 is engaged with the fixing rod 7 to ensure that the chassis 83 remains stable during rotation. The inner rotating ring 86 is fixed on the chassis 83. The outer rotating ring 85 is rotatably connected to the inner rotating ring 86 through the ball bearings 861. The ball bearings 861 roll between the bottom rotating ring groove of the inner rotating ring 86 and the top rotating ring groove of the outer rotating ring 85, which not only achieves smooth rotation of the outer rotating ring 85 relative to the inner rotating ring 86, but also bears the axial load generated during processing. After the flange is clamped on the rotating disk 82, the control box 3 controls the rotation angle of the first motor 841 according to the preset number of holes and the indexing angle, driving the rotating disk 82 to rotate a fixed angle each time, so that the position of the flange to be drilled is aligned with the drilling assembly 6 in sequence, realizing the automatic and precise indexing of the flange circumferential holes.

[0031] By setting up a clamping mechanism 9, the second motor 99 drives the second gear 991 to rotate. The second gear 991 meshes with the third gear 992, causing the telescopic inner rod 932 to rotate. The bevel gear 93 at the top of the telescopic inner rod 932 rotates along with it. The bevel gear 93 meshes with multiple bevel gears 921 simultaneously, causing each lead screw 92 to rotate synchronously. The lead screw 92 drives the moving block 97 to move axially along the lead screw 92. The clamping block 94 at the top of the moving block 97 moves synchronously with the moving block 97, clamping from the inner hole of the flange outward or from the outer circle of the flange inward. Each clamping block 94 operates simultaneously under the synchronous transmission of the bevel gear 93 and the bevel gears 921, achieving centering and clamping of the flange. The clamping blocks 94 are quickly replaced by inserting into the insertion holes of the moving block 97 via insert pins 941. The elastic strip 943 forms a shield on both sides of the clamping block 94, isolating the lead screw 92 from the drilling area, effectively preventing metal chips generated during drilling from splashing into the threaded part of the lead screw 92, avoiding the problem of chip accumulation causing the lead screw 92 to jam or wear to be aggravated, and ensuring the stability and reliability of the clamping mechanism 9 for long-term use.

[0032] By configuring the electromagnet 981, cylinder 98, and spring 931, when the clamping force of the clamping block 94 needs to be adjusted, the cylinder 98 first extends to push the electromagnet 981 upwards until it is in contact with the bottom surface of the bevel gear 93. Then, the electromagnet 981 is energized to generate magnetic force, which firmly attracts the bevel gear 93. The cylinder 98 then retracts, causing the bevel gear 93 to move downwards against the force of the spring 931, disengaging the bevel gear 93 from the bevel gear 921. At this time, when the first motor 841 drives the rotating disk 82 to perform indexing rotation, the bevel gear 921 on the rotating disk 82 rotates with the rotating disk 82. However, the bevel gear 93, having disengaged from the bevel gear 921 and attracted and fixed to the base 83 by the electromagnet 981, does not rotate with the rotating disk 82. This avoids the problem of the bevel gear 921 driving the bevel gear 93 to rotate passively during the indexing process, which could cause the lead screw 92 to accidentally loosen. When the clamping force needs to be readjusted, the electromagnet 981 is de-energized and demagnetized, and the bevel gear 93 automatically rises and resets under the restoring force of the spring 931, re-engaging with the bevel gear 921. At the same time, the telescopic inner rod 932 slides axially through the sliding block 934 and the sliding groove of the telescopic outer rod 933, guiding the lifting and lowering movement of the bevel gear 93.

[0033] By setting up a Y-axis travel assembly 21 and an X-axis travel assembly 22, with the fixed rod 7 mounted on the top of the sliding frame of the X-axis travel assembly 22 and the X-axis travel assembly 22 mounted on the top of the sliding frame of the Y-axis travel assembly 21, the Y-axis travel assembly 21 drives the X-axis travel assembly 22 and its upper components to move along the Y-axis, and the X-axis travel assembly 22 drives the fixed rod 7 and its upper components to move along the X-axis. This causes the flange on the rotating disk 82 to perform two-dimensional position adjustment in the horizontal plane, achieving adaptive processing for flanges of different specifications. When it is necessary to process equally spaced holes in the flange circumference, the rotating mechanism 8 directly drives the rotating disk 82 to rotate at a preset indexing angle to complete the positioning of each hole. There is no need to write a complex processing program for each flange specification. The operator only needs to input the basic parameters such as the number of holes and the pitch circle diameter of the flange on the control box 3, and the system can automatically complete the drilling cycle.

[0034] Example 2 Please see Figure 1-15 Furthermore, based on Embodiment 1, the working principle and effect of the rotating mechanism 8 are further explained.

[0035] In the rotating mechanism 8, the first motor 841 drives the first gear 843 to rotate. The first gear 843, through meshing with the outer gear ring 84, drives the outer rotating ring 85 to rotate, and the rotating disk 82 on the top of the outer rotating ring 85 rotates accordingly. The locking block 81 is engaged between the fixed rods 7 to ensure that the chassis 83 remains stable during rotation. The inner rotating ring 86 is fixed to the chassis 83, and the outer rotating ring 85 is rotatably connected to the inner rotating ring 86 through the ball bearings 861. The ball bearings 861 roll between the bottom rotating ring groove of the inner rotating ring 86 and the top rotating ring groove of the outer rotating ring 85, which not only achieves smooth rotation of the outer rotating ring 85 relative to the inner rotating ring 86, but also bears the axial load generated during processing.

[0036] After the flange is clamped onto the rotating disk 82, the control box 3 controls the rotation angle of the first motor 841 according to the preset number of holes and indexing angle, driving the rotating disk 82 to rotate by a fixed angle each time (e.g., 45° for 8 holes, 30° for 12 holes, etc.), so that the positions of the holes to be drilled on the flange are sequentially aligned with the drilling assembly 6, realizing automatic and precise indexing of the flange circumferential holes. This automatic indexing method eliminates the need for manual marking and positioning, avoids visual errors and cumulative errors, solves the problems of poor indexing accuracy and cumbersome operation when processing with ordinary drilling machines, and greatly improves the processing accuracy and efficiency of the flange circumferential holes.

[0037] Example 3 Please see Figure 1-15 Furthermore, based on Embodiment 1 and Embodiment 2, the structure and working principle of the clamping mechanism 9 are further explained.

[0038] In the clamping mechanism 9, the second motor 99 drives the second gear 991 to rotate. The second gear 991 meshes with the third gear 992, causing the telescopic inner rod 932 to rotate. The bevel gear 93 at the top of the telescopic inner rod 932 rotates along with it. The bevel gear 93 simultaneously meshes with multiple bevel gears 921, causing each lead screw 92 to rotate synchronously. The lead screw 92 drives the moving block 97 to move axially along the lead screw 92 through the ball nut pair. The clamping block 94 at the top of the moving block 97 moves synchronously with the moving block 97, clamping from the inner hole of the flange outward or from the outer circle of the flange inward.

[0039] Each clamping block 94 operates simultaneously under the synchronous transmission of the bevel gear 93 and the bevel gear 921, achieving centering and clamping of the flange and ensuring that the flange center coincides with the rotation center of the rotating disk 82. The clamping blocks 94 are quickly replaced by inserting into the insertion holes of the moving block 97 via insert pins 941. The appropriate size of the clamping block 94 can be replaced according to different flange specifications (hole diameter or outer diameter), expanding the applicability of the device. The elastic strips 943 form a shield on both sides of the clamping blocks 94, isolating the lead screw 92 from the drilling area, effectively preventing metal debris generated during drilling from splashing into the threaded part of the lead screw 92, avoiding the problem of debris accumulation causing the lead screw 92 to jam or experience accelerated wear.

[0040] Example 4 Please see Figure 1-15 Furthermore, based on the aforementioned embodiments, the cooperative structure and working process of the electromagnet 981, cylinder 98, and spring 931 are further described.

[0041] When it is necessary to adjust the clamping force of the clamping block 94, the cylinder 98 first extends to push the electromagnet 981 upward to fit against the bottom surface of the bevel gear 93. Then, the electromagnet 981 is energized to generate magnetic force to firmly attract the bevel gear 93. The cylinder 98 then retracts to drive the bevel gear 93 to move downward against the force of the spring 931, so that the bevel gear 93 disengages from the bevel gear 921.

[0042] At this time, when the first motor 841 drives the rotating disk 82 to perform indexing rotation, the bevel gear 921 on the rotating disk 82 rotates together with the rotating disk 82, while the bevel gear disk 93 disengages from the bevel gear 921 and is attracted and fixed to the chassis 83 by the electromagnet 981, and does not rotate with the rotating disk 82. This avoids the problem of the bevel gear 921 driving the bevel gear disk 93 to rotate passively during the indexing process, causing the lead screw 92 to accidentally loosen, and ensures the stability of the clamping state during the processing.

[0043] When the clamping force needs to be readjusted, the electromagnet 981 is de-energized and demagnetized. The bevel gear 93 automatically rises and resets under the restoring force of the spring 931, re-engaging with the bevel gear 921. The clamping block 94 can then be readjusted via the second motor 99. This structure reliably switches between clamping adjustment and indexing rotation. The electromagnet 981, cylinder 98, and spring 931 work together to flexibly switch between engagement and disengagement between the bevel gear 93 and the bevel gear 921. Simultaneously, the telescopic inner rod 932 slides axially through the sliding block 934 and the sliding groove of the telescopic outer rod 933, guiding the lifting and lowering movement of the bevel gear 93.

[0044] Example 5 Please see Figure 1-15 Furthermore, based on the aforementioned embodiments, the structure and working principle of the stroke mechanism 2 will be further explained.

[0045] The travel mechanism 2 includes a Y-axis travel assembly 21 and an X-axis travel assembly 22. A fixed rod 7 is mounted on the top of the sliding frame of the X-axis travel assembly 22, and the X-axis travel assembly 22 is mounted on the top of the sliding frame of the Y-axis travel assembly 21. A rotating mechanism 8 and a clamping mechanism 9 are mounted on the fixed rod 7. The Y-axis travel assembly 21 drives the X-axis travel assembly 22 and its upper components to move along the Y-axis, while the X-axis travel assembly 22 drives the fixed rod 7 and its upper components to move along the X-axis, thereby causing the flange on the rotating disk 82 to perform two-dimensional position adjustment in the horizontal plane.

[0046] When processing flanges of different sizes, the coordinated movement of the Y-axis travel assembly 21 and the X-axis travel assembly 22 aligns the center position of the flange with the drill bit of the drilling assembly 6, ensuring that the pitch circle diameter of each hole matches the preset value, thus achieving adaptable processing for flanges of different specifications. When processing circumferentially divided holes on the flange, the rotating mechanism 8 directly drives the rotating disk 82 to rotate at the preset pitch angle to complete the positioning of each hole. There is no need to write complex processing programs for each flange specification. The operator only needs to input the basic parameters such as the number of holes and the pitch circle diameter on the control box 3, and the system can automatically complete the drilling cycle. This avoids the cumbersome programming of CNC machine tools, the easy error in parameter input, and the program bugs and control command drift problems that may occur during long-term operation, reducing the difficulty of equipment operation and the technical requirements for operators.

[0047] Actual operation process In actual operation, when this device is used, firstly, according to the specifications and dimensions of the flange to be processed, select the appropriate size clamping block 94 and insert it into the insertion hole on the top of the moving block 97, and place the flange on the top of the rotating disk 82. The second motor 99 drives the second gear 991 to rotate, which in turn drives the telescopic inner rod 932 to rotate through the third gear 992. The bevel gear 93 rotates with the telescopic inner rod 932 and simultaneously meshes with each bevel gear 921, driving each lead screw 92 to rotate synchronously. The moving block 97 drives the clamping block 94 to move towards the flange, clamping it from the inner hole of the flange outward or from the outer circle of the flange inward, thus centering and clamping the flange onto the rotating disk 82. After clamping is completed, cylinder 98 extends and pushes electromagnet 981 upward to fit against the bottom surface of bevel gear 93. Electromagnet 981 is energized and attracts bevel gear 93. Cylinder 98 retracts and drives bevel gear 93 to move downward against the force of spring 931, so that bevel gear 93 disengages from bevel gear 921.

[0048] The operator then inputs parameters such as the number of holes and the pitch circle diameter of the flange into the control box 3. The control box 3 controls the Z-axis travel assembly 5 to drive the drilling assembly 6 downwards to drill holes in the flange. After drilling one hole, the drilling assembly 6 retracts, and the control box 3 controls the first motor 841 to drive the first gear 843 to rotate. This, through the external gear ring 84, drives the rotating disk 82 to rotate by one indexing angle, moving the flange to the next hole position below the drilling assembly 6 for drilling the next hole. This indexing-drilling cycle is repeated until all holes in the flange's circumference are drilled.

[0049] During the indexing rotation, the bevel gear 93 is disengaged from the bevel gear 921. The bevel gear 921 on the rotating disk 82 rotates with the rotating disk 82, while the bevel gear 93 is attracted and fixed to the base 83 by the electromagnet 981 and does not rotate with the rotating disk 82, ensuring the stability of the clamping state during the indexing process. When different specifications of flanges need to be processed, the flange center position is adjusted to align with the drill bit of the drilling assembly 6 through the linkage movement of the Y-axis travel assembly 21 and the X-axis travel assembly 22 to meet the processing requirements of holes with different pitch circle diameters. When it is necessary to replace the clamping block 94, the insert pin 941 is pulled out from the insertion hole of the moving block 97, and the clamping block 94 of the corresponding size is replaced. The operation is simple and quick.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A drilling device for flange processing, comprising a base (1), characterized in that: A column (4) is fixedly connected to the rear top of the base (1). A Z-axis travel assembly (5) is installed on the front side of the column (4). A drilling assembly (6) is installed on the front side of the Z-axis travel assembly (5). A control box (3) is installed on the rear side of the column (4). A travel mechanism (2) is installed on the front top of the base (1). A fixing rod (7) is installed on the top of the travel mechanism (2). A rotating mechanism (8) is installed on the top of the fixing rod (7). A clamping mechanism (9) is installed on the top of the rotating mechanism (8). The rotating mechanism (8) includes a locking block (81), which is locked between the fixed rods (7). A chassis (83) is fixedly connected to the top of the locking block (81). An inner rotating ring (86) is fixedly connected to the top of the locking block (81). An outer rotating ring (85) is rotatably connected to the outer side of the inner rotating ring (86). A rotating disk (82) is fixedly connected to the top of the outer rotating ring (85). An outer toothed ring (84) is fixedly connected to the outer wall of the outer rotating ring (85). A first gear (843) meshes with the front side of the outer toothed ring (84). A first motor (841) is fixedly connected to the middle of the first gear (843). A fixed frame (842) is fixedly connected to the outer side of the first motor (841). The rear side of the fixed frame (842) is fixedly connected to the bottom of the chassis (83). The clamping mechanism (9) includes an umbrella-shaped base plate (91), which is fixedly connected to the top of a rotating disk (82). A fixed block (95) is fixedly connected between adjacent rotating disks (82). A lead screw (92) is rotatably connected to the middle of the fixed block (95). A moving block (97) is threadedly connected to the lead screw (92) near its center. A clamping block (94) is inserted into the top of the moving block (97). A bevel gear (921) is fixedly connected to one end of the inner side of the lead screw (92). An umbrella-shaped gear disk (93) meshes with the bottom of the bevel gear (921). The bottom of the umbrella-shaped gear disk (93) is fixedly connected to... There is a telescopic inner rod (932), and a telescopic outer rod (933) is slidably connected to the outer wall of the telescopic inner rod (932). The bottom of the telescopic outer rod (933) is rotatably connected to the middle of the chassis (83). A third gear (992) is fixedly connected to the top of the telescopic inner rod (932). A second gear (991) meshes with the front side of the third gear (992). A second motor (99) is fixedly connected to the middle of the second gear (991). A cylinder (98) is fixedly connected to the top of the chassis (83) behind the third gear (992). An electromagnet (981) is fixedly connected to the top of the cylinder (98). When the electromagnet (981) is energized, it attracts the bevel gear (93), causing the bevel gear (93) to disengage from the bevel gear (921).

2. The drilling device for flange processing according to claim 1, characterized in that: The X-axis travel assembly (22), Y-axis travel assembly (21) and Z-axis travel assembly (5) are all composed of a motor, lead screw, ball nut pair, slide rail, mounting base and sliding frame. The top of the sliding frame of the Y-axis travel assembly (21) is fixedly connected to the mounting base (87) of the X-axis travel assembly (22). The top of the sliding frame of the X-axis travel assembly (22) is fixedly connected to a fixing rod (7). The front side of the sliding frame of the Z-axis travel assembly (5) is equipped with a drilling assembly (6).

3. The drilling device for flange processing according to claim 1, characterized in that: The drilling assembly (6) is composed of a lifting seat, a motor, a pulley group, a rotating rod, a drill bit seat and a drill bit. The stroke mechanism (2), the Z-axis stroke assembly (5), the drilling assembly (6), the first motor (841) and the second motor (99) are all electrically connected to the control box (3).

4. The drilling device for flange processing according to claim 1, characterized in that: The fixing rod (7) is provided with multiple rods, and a ring of locking blocks (81) is distributed between the multiple fixing rods (7).

5. The drilling device for flange processing according to claim 1, characterized in that: The inner rotating ring (86) has a bottom rotating ring groove at the top, and a ball (861) is rolled in the bottom rotating ring groove of the inner rotating ring (86). The outer rotating ring (85) has a top rotating ring groove corresponding to the ball (861), and a ball (861) is rolled in the top rotating ring groove. The inner rotating ring (86) and the outer rotating ring (85) are rotatably connected by the ball (861).

6. The drilling device for flange processing according to claim 1, characterized in that: A fixed sleeve (831) is fixedly connected to the top center of the chassis (83). A bearing (935) is interference-fitted inside the fixed sleeve (831). The inner ring of the bearing (935) is interference-fitted with the outer wall of the telescopic outer rod (933). A sliding groove is opened near the top center of the telescopic outer rod (933). A sliding block (934) is slidably connected to the top of the sliding groove. The inner side of the sliding block (934) is fixedly connected to the outer wall of the telescopic inner rod (932).

7. A drilling device for flange processing according to claim 6, characterized in that: The fixed sleeve (831) has a retaining ring (936) threadedly connected to the top of the bearing (935). The telescopic inner rod (932) and the telescopic outer rod (933) have springs (931) sleeved between the retaining ring (936) and the third gear (992) on their outer sides.

8. A drilling device for flange processing according to claim 1, characterized in that: The bottom of the second motor (99) is fixedly connected to the top of the chassis (83), the bottom of the cylinder (98) is fixedly connected to the top of the chassis (83), and the top of the rotating disk (82) is densely surrounded by umbrella-shaped base plates (91) at equal intervals. A slot (912) is opened in the middle of the inner side of the umbrella-shaped base plate (91). Limiting strips (911) are fixedly connected to the bottom of both sides of the umbrella-shaped base plate (91). A mounting base (87) is fixedly connected to the middle of the top of the rotating disk (82). A limiting block (871) is fixedly connected to the outside of the mounting base (87) in relation to the slot (912). The limiting block (871) is inserted into the slot (912). An insert (88) is fixedly connected to the outside of the mounting base (87) in relation to the limiting strip (911). The limiting strip (911) is inserted into the bottom of the insert (88).

9. A drilling device for flange processing according to claim 1, characterized in that: The movable block (97) is fixedly connected to the middle of the bottom of the ball nut pair. The movable block (97) is threaded to the outer wall of the lead screw (92) through the ball nut pair. The movable block (97) is slidably connected to the two sides of the movable block (97). The front end of the sliding rod (96) is fixedly connected to the rear side of the fixed block (95). The movable block (97) has insertion holes on both sides. The movable block (97) has a pin (941) inserted into the insertion hole. The top of the pin (941) is fixedly connected to the bottom of the clamping block (94).

10. A drilling device for flange processing according to claim 1, characterized in that: Both sides of the clamping block (94) are fixedly connected with elastic strips (943). The side of the elastic strip (943) away from the clamping block (94) is fixedly connected with a insert (942). The bottom of the insert (942) is fixedly connected with a pin. The fixing block (95) and the mounting base (87) are both provided with positioning holes corresponding to the pins. The elastic strips (943) on both sides of the clamping block (94) are respectively inserted into the positioning holes of the fixing block (95) and the mounting base (87) through the pins at the bottom of the insert (942). The mounting base (87) is provided with a mounting hole in the middle. A circular baffle (89) is threadedly connected to the top of the mounting hole.

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