High-precision flange punching machine tool

Abstract

The invention relates to the technical field of flange machining equipment, in particular to a high-precision flange punching machine tool which comprises a support, a punching assembly, a feeding assembly, a fixing assembly and a correcting assembly. The punching assembly comprises a hydraulic oil cylinder, a fixing clamp, a punching head and a several-meter bolt. The hydraulic oil cylinder is connected with the bracket; the fixing clamp is fixedly arranged on the hydraulic oil cylinder; a mounting groove is formed in the fixing clamp; a threaded hole is formed in the fixing clamp; a matching hole is formed in the punching head; the several-meter bolt is arranged in the matching hole in a penetrating mode and connected with the fixing clamp in a threaded mode. The feeding assembly is arranged on the support and used for driving the hydraulic oil cylinder to move. The fixing assembly is arranged on the support and used for fixing a flange to be machined. The correcting assembly is arranged on the support and used for correcting the punching head. The product quality of flanges can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of flange processing equipment, and in particular to a high-precision flange punching machine tool. Background Art

[0002] In order to facilitate the installation of flanges, it is necessary to punch holes on the side wall for installing several-meter bolts. Flange punching machine is an important equipment in flange punching production and is widely used in the production of various flanges.

[0003] When punching the flange side wall, the operator needs to fix the flange on the frame and then use the punching tool to punch. In the actual mass production process, it is very easy to have poor consistency in the hole size after the flange processing due to tool wear, which makes it difficult to ensure product quality. Summary of the invention

[0004] In order to improve the product quality of flanges, the present application provides a high-precision flange punching machine.

[0005] The present application provides a high-precision flange punching machine tool, which adopts the following technical solution: A high-precision flange punching machine tool, comprising a bracket, a punching assembly, a feed assembly, a fixing assembly and a proofreading assembly; the punching assembly comprises a hydraulic cylinder, a fixing fixture, a punching head and a punching bolt; the fixed end of the hydraulic cylinder is connected to the bracket; the fixing fixture is fixedly arranged at the movable end of the hydraulic cylinder; the fixing fixture is provided with a mounting groove; the punching head is adapted to the mounting groove; the fixing fixture is provided with a threaded hole; the punching head is provided with a matching hole; the punching bolt is passed through the threaded hole and the matching hole, and the punching bolt is threadedly connected to the fixing fixture; the feed assembly is arranged on the bracket, and the feed assembly is used to drive the hydraulic cylinder to move; the fixing assembly is arranged on the bracket, and the fixing assembly is used to fix the flange to be processed; the proofreading assembly is arranged on the bracket, and the proofreading assembly is used to proofread the punching head.

[0006] By adopting the above technical solution, when punching the flange side wall, the operator fixes the flange to be processed on the fixing assembly, and then uses the proofreading assembly to proofread the punching head. If the punching head is worn, the operator removes the bolts through the thread, then removes the punching head from the installation slot, and replaces the new punching head into the installation slot, and then fixes the punching head with the fixing fixture using the bolts inserted in the threaded hole and the matching hole, and then uses the proofreading assembly to proofread the punching head again, repeating the above process until the new punching head is coaxially installed with the fixing fixture, and the operator uses the feed assembly to drive the hydraulic cylinder to move directly above the position to be punched, and then starts the hydraulic cylinder, which drives the punching head to move in the direction of approaching and away from the flange to be processed, thereby completing the punching operation of the flange to be processed. The proofreading assembly is used to proofread the punching head before each punching. If wear occurs, the operator can replace the punching head in time, thereby avoiding the problem of poor consistency of hole size after flange processing due to tool wear, and improving the product quality of the flange.

[0007] Optionally, the proofreading component includes a proofreading block, a laser displacement sensor, a buzzer and a controller; the proofreading block is arranged on the bracket, and a proofreading groove is opened on the proofreading block; at least four laser displacement sensors are evenly arranged along the circumference of the proofreading groove and are fixedly connected to the proofreading block, and the laser displacement sensor is used to detect the distance information between itself and the punching head, and convert it into a distance signal and input it into the controller; the buzzer is fixedly arranged on the bracket, and the buzzer is used to emit an alarm sound; the controller is fixedly arranged on the bracket, and the controller is electrically connected to the laser displacement sensor and the buzzer, and the controller is used to control the working state of the buzzer according to the distance signal transmitted by the laser displacement sensor.

[0008] By adopting the above technical solution, when calibrating the punching head, the operator uses the feed assembly to drive the hydraulic cylinder to move the punching head into the calibration groove. At this time, the laser displacement sensor is in working state, and the laser displacement sensor detects the distance information between itself and the punching head. The controller determines whether the punching head is worn according to the distance signal transmitted by the laser displacement sensor. If the punching head is worn, the controller controls the buzzer to sound an alarm to remind the operator to replace the punching head, thereby realizing the calibration of the punching head and being able to promptly remind the operator to replace the punching head, further avoiding the worn tool from punching holes in the flange, thereby improving the product quality of the flange.

[0009] Optionally, the proofreading assembly is rotatably connected to the bracket, and the proofreading assembly further comprises a first steering gear, which is fixedly disposed on the bracket and is used to drive the proofreading block to rotate.

[0010] By adopting the above technical solution, when the punching head is calibrated, the first servo is used to drive the calibration block to rotate, so that the laser displacement sensor rotates relative to the punching head. The laser displacement sensor can detect the punching head from different angles, thereby improving the accuracy of the punching head calibration.

[0011] Optionally, the fixing assembly includes a fixing column, a turntable, a clamping block, a first motor and a first positioning ring; the fixing column is arranged on the bracket, and the axial direction of the fixing column is perpendicular to the axial direction of the punching head; the turntable is coaxially arranged inside the fixing column and is rotatably connected to the fixing column, and the turntable is provided with a planar thread; the fixing column is evenly provided with at least three sliding grooves along its own circumference; the clamping block is evenly provided with at least three sliding grooves along the circumference of the fixing column, the clamping block corresponds to the sliding groove one by one, one end of the clamping block is slidably arranged in the sliding groove, the clamping block is provided with a planar thread, and the planar thread on the clamping block is meshed with the planar thread on the turntable; the first motor is fixedly arranged on the fixing column, and the first motor is used to drive the turntable to rotate; the first positioning ring is coaxially fixedly arranged on the fixing column.

[0012] By adopting the above technical solution, when installing the flange to be processed, the operator first sets the flange to be processed on the fixed column, and the flange to be processed abuts against the first positioning ring, so as to determine the position of the flange to be processed along the axial direction of the fixed column, and then the operator starts the first motor, and the first motor drives the turntable to rotate, and the turntable drives the clamping block to move together in the direction away from the fixed column, so as to abut against the flange to be processed and fix the flange to be processed, and the turntable is used to drive multiple fixed columns to move together, so that the flange to be processed can be coaxially fixed on the fixed column, thereby avoiding deviation when punching the side wall of the flange to be processed, thereby improving the product quality of the flange.

[0013] Optionally, the fixing assembly further includes a second steering gear, the second steering gear is fixedly disposed on the bracket, and the fixing column is coaxially fixedly connected to an output shaft of the second steering gear.

[0014] By adopting the above technical solution, the second steering gear is used to drive the fixed column to rotate, thereby driving the flange to be processed to rotate, so as to facilitate punching at different positions of the side wall of the flange to be processed, thereby being able to adapt to the punching processing of different types of flanges.

[0015] Optionally, the feed assembly includes an X-axis feed component and a Z-axis feed component; the axis of the fixed column, the axis of the punching head, and the axis of the proofreading groove are all located in the same plane; the X-axis feed component includes a driving pulley, a driven pulley, a synchronous belt, a second motor and a first mounting block; the driving pulley and the driven pulley are both rotatably arranged on the bracket; the synchronous belt is wound around the driving pulley and the driven pulley; the second motor is fixedly arranged on the bracket, and the second motor is used to drive the driving pulley to rotate; the first mounting block is slidably connected to the bracket and fixedly connected to the synchronous belt; the Z-axis feed component is arranged on the first mounting block, and the Z-axis feed component is used to drive the hydraulic cylinder to move and feed along a direction perpendicular to the axis of the fixed column.

[0016] By adopting the above technical solution, the second motor is used to drive the active pulley to rotate, thereby driving the driven pulley and the synchronous belt to rotate. The synchronous belt drives the first mounting block to move during the movement, and cooperates with the Z-axis feed component to drive the hydraulic cylinder to move. Since the axis of the fixed column, the axis of the punching head, and the axis of the proofreading groove are all located in the same plane, when punching the side wall of the flange, it is only necessary for the punching head to move in two directions. Compared with the traditional three-direction movement, the possible errors are reduced, and the possible deviations in the flange punching are further reduced, thereby improving the product quality of the flange.

[0017] Optionally, the Z-axis feed component includes a guide rail, a lead screw, a second mounting block and a third motor; the guide rail is fixedly arranged on the first mounting block; the lead screw is rotatably arranged on the first mounting block, and the axial direction of the lead screw and the axial direction of the guide rail are both perpendicular to the axial direction of the fixed column; the second mounting block is slidingly connected to the guide rail and is threadedly connected to the lead screw; the third motor is fixedly arranged on the first mounting block, and the third motor is used to drive the lead screw to rotate; the fixed end of the hydraulic cylinder is fixedly arranged on the second mounting block.

[0018] By adopting the above technical solution, the third motor is used to drive the lead screw to rotate, thereby driving the second mounting block to slide along the guide rail, thereby driving the hydraulic cylinder to slide along the guide rail, and cooperating with the X-axis feed component to drive the hydraulic cylinder to move.

[0019] Optionally, a loading assembly is provided on the bracket, and the loading assembly includes a positioning column and a cylinder; the positioning column is coaxially arranged with the fixed column; the cylinder is coaxially arranged with the fixed column, the fixed end of the cylinder is fixedly arranged on the bracket, and the positioning column is threadedly connected with the movable end of the cylinder; a second positioning ring is coaxially fixedly arranged on the positioning column.

[0020] By adopting the above technical solution, when fixing and installing the flange to be processed, the operator first sets the flange to be processed on the positioning column, and makes the flange end face abut against the second positioning ring, and then uses the cylinder extension to move the flange to be processed in the direction close to the fixed column, so that the flange to be processed is set on the fixed column, and then starts the first motor to drive the clamp to clamp the flange to be processed. It is ensured that when the clamp fixes the flange to be processed, the flange to be processed and the fixed column are in a coaxial state, thereby ensuring that the flange to be processed and the fixed column can be installed coaxially, further reducing the deviation that may occur in the flange punching, thereby improving the product quality of the flange. The operator can replace the positioning column with different outer diameters through the thread, so that it can adapt to the punching of flanges of different models.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: By setting up the proofreading component, the punching head is proofread before each punching. If wear occurs, the operator can replace the punching head in time, thus avoiding the problem of poor hole size consistency after flange processing due to tool wear, and improving the product quality of the flange; By setting a fixing assembly and using a turntable to drive multiple fixing columns to move together, the flange to be processed can be coaxially fixed on the fixing column, avoiding deviation when punching the side wall of the flange to be processed, thereby improving the product quality of the flange; By setting up the feed assembly, since the axis of the fixed column, the axis of the punching head, and the axis of the proofreading groove are all located in the same plane, when punching the side wall of the flange, it is only necessary for the punching head to move in two directions. Compared with the traditional three-direction movement, the possible errors are reduced, and the possible deviations in the flange punching are further reduced, thereby improving the product quality of the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 It is an embodiment of the present application; Figure 3 yes Figure 2 A partial enlarged view of the middle A; Figure 4 yes Figure 1 A partial enlarged view of point B in the middle; Figure 5 yes Figure 2 A partial enlarged view of point C in the middle; Figure 6 It is a partial enlarged view of the embodiment of the present application to show the installation slot; Figure 7 yes Figure 1 A partial enlarged view of point D in the middle; Figure 8 yes Figure 2 A partial enlarged view of point E in the middle.

[0023] Description of reference numerals: 1. Bracket; 2. Punching assembly; 21. Hydraulic cylinder; 22. Fixing fixture; 221. Mounting slot; 222. Threaded hole; 23. Punching head; 231. Matching hole; 24. Several-meter bolt; 3. Feed assembly; 31. X-axis feed component; 311. driving pulley; 312. driven pulley; 313. synchronous belt; 314. second motor; 315. first mounting block; 32. Z-axis feed component; 321. guide rail; 322. lead screw; 323. second mounting block; 324. third motor; 4. Fixing assembly; 41. Fixing column; 411. Slideway; 42. Turntable; 43. Clamping block; 44. First motor; 45. First positioning ring; 46. Second steering gear; 5. Proofreading assembly; 51. Proofreading block; 511. Proofreading slot; 52. Laser displacement sensor; 53. Buzzer; 54. Controller; 55. First servo; 6. Loading assembly; 61. Positioning column; 611. Second positioning ring; 62. Cylinder. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-8 This application is described in further detail.

[0025] The present application embodiment discloses a high-precision flange punching machine tool. Figure 1 and Figure 2 The high-precision flange punching machine tool comprises a bracket 1, and a fixing component 4 is arranged on the bracket 1. Figure 2 and Figure 3 The fixing assembly 4 includes a second steering gear 46, a fixing column 41, a rotating disk 42, a clamping block 43, a first motor 44 and a first positioning ring 45. The second steering gear 46 is fixedly arranged on the bracket 1, and the output shaft of the second steering gear 46 is arranged horizontally. The fixing column 41 is coaxially fixedly connected with the output shaft of the second steering gear 46.

[0026] The turntable 42 is coaxially arranged inside the fixed column 41. The turntable 42 is rotatably connected with the fixed column 41, and the rotation axis is the same as the axis of the fixed column 41. A flat thread is arranged on the side of the turntable 42 away from the second steering gear 46. The fixed column 41 is evenly provided with three slide grooves 411 along its own circumference. The slide grooves 411 are located on the side of the turntable 42 away from the second steering gear 46. There are three clamping blocks 43, which correspond to the slide grooves 411 one by one. One end of the clamping block 43 is slidably arranged in the slide groove 411, and the sliding axis is arranged along the radial direction of the fixed column 41. A flat thread is arranged on the side of the clamping block 43 close to the turntable 42, and the flat thread on the clamping block 43 is engaged with the flat thread on the turntable 42. The first motor 44 is fixedly arranged inside the fixed column 41, and the output shaft of the first motor 44 is coaxially fixedly connected with the turntable 42. The first positioning ring 45 is coaxially fixedly arranged on the fixed column 41.

[0027] Reference Figure 1 and Figure 2 The bracket 1 is provided with a feeding assembly 6, which includes a cylinder 62 and a positioning column 61. The cylinder 62 is coaxially arranged with the fixed column 41, and the fixed end of the cylinder 62 is fixedly connected with the bracket 1. The positioning column 61 is located between the cylinder 62 and the fixed column 41, and the positioning column 61 is coaxially arranged with the cylinder 62, and the positioning column 61 is threadedly connected with the movable end of the cylinder 62. A second positioning ring 611 is coaxially fixedly arranged on the positioning column 61.

[0028] Reference Figure 1 and Figure 4 A feeding assembly 3 is provided on the bracket 1, and the feeding assembly 3 is located at the top of the fixed column 41. The feeding assembly 3 includes an X-axis feeding component 31 and a Z-axis feeding component 32. The X-axis feeding component 31 includes a driving pulley 311, a driven pulley 312, a synchronous belt 313, a second motor 314 and a first mounting block 315. The axis of the driving pulley 311 is parallel to the axis of the driven pulley 312, and the driving pulley 311 and the driven pulley 312 are both rotatably connected to the bracket 1. The synchronous belt 313 is wound around the driving pulley 311 and the driven pulley 312, and the synchronous belt 313 is meshed with the driving pulley 311 and the driven pulley 312. The second motor 314 is fixedly arranged on the bracket 1, and the output shaft of the second motor 314 is coaxially and fixedly connected to the driving pulley 311. The first mounting block 315 is slidably connected to the bracket 1 , and the sliding axis is parallel to the axis of the fixing column 41 . The first mounting block 315 is fixedly connected to the synchronous belt 313 .

[0029] The Z-axis feeding component 32 includes a guide rail 321, a lead screw 322, a second mounting block 323 and a third motor 324. Two guide rails 321 are arranged in parallel and are fixedly arranged on the first mounting block 315. The length direction of the guide rail 321 is perpendicular to the axis of the fixed column 41. The lead screw 322 is arranged in parallel with the guide rail 321, the lead screw 322 is located between the two guide rails 321, and the lead screw 322 is rotatably connected to the first mounting block 315. The second mounting block 323 is sleeved on the guide rail 321 and the lead screw 322. The second mounting block 323 is slidably connected to the guide rail 321, and the sliding axis is arranged along the length direction of the guide rail 321. The second mounting block 323 is threadedly connected to the lead screw 322. The third motor 324 is fixedly arranged on the first mounting block 315, and the output shaft of the third motor 324 is coaxially fixedly connected to the lead screw 322.

[0030] Reference Figure 5 and Figure 6 , a punching assembly 2 is arranged on the second mounting block 323, and the punching assembly 2 includes a hydraulic cylinder 21, a fixing fixture 22, a punching head 23 and a few bolts 24. The length direction of the hydraulic cylinder 21 is perpendicular to the axis of the fixing column 41, the fixed end of the hydraulic cylinder 21 is fixedly connected to the second mounting block 323, and the movable end of the hydraulic cylinder 21 is located at the bottom of the fixed end of the hydraulic cylinder 21. The fixing fixture 22 is fixedly arranged on the movable end of the hydraulic cylinder 21, and a mounting groove 221 is coaxially provided at the bottom of the fixing fixture 22. The punching head 23 is adapted to the mounting groove 221, and one end of the punching head 23 is located in the mounting groove 221. Four threaded holes 222 are evenly provided on the side wall of the fixing fixture 22 along its own circumference. Four matching holes 231 are evenly provided on the punching head 23 along its own circumference, and the matching holes 231 correspond to the threaded holes 222 one by one. Four bolts 24 are provided, and the bolts 24 correspond to the threaded holes 222 one by one. The bolts 24 are inserted into the threaded holes 222 and the matching holes 231 , and the bolts 24 are threadedly connected to the fixing fixture 22 .

[0031] Reference Figure 7 and Figure 8, a proofreading assembly 5 is arranged on the bracket 1, and the proofreading assembly 5 includes a proofreading block 51, a first steering gear 55, a laser displacement sensor 52, a buzzer 53 and a controller 54. The proofreading block 51 is located at the bottom of the punching head 23, and the proofreading block 51 is rotatably arranged on the bracket 1, and the rotation axis is arranged parallel to the axis of the punching head 23, and a proofreading groove 511 is coaxially provided on the top of the proofreading block 51. The first steering gear 55 is fixedly arranged on the bracket 1, and the output shaft of the first steering gear 55 is coaxially fixedly connected with the proofreading block 51. Four laser displacement sensors 52 are arranged uniformly along the circumference of the proofreading block 51, and the laser displacement sensors 52 are fixedly arranged on the side wall of the proofreading groove 511. The laser displacement sensor 52 is used to detect the distance information between itself and the punching head 23, and convert it into a distance signal to input into the controller 54. The buzzer 53 is fixedly arranged on the bracket 1, and the buzzer 53 is used to emit an alarm sound. The controller 54 is fixedly mounted on the bracket 1 , and is electrically connected to the first steering engine 55 , the laser displacement sensor 52 , and the buzzer 53 . The controller 54 is used to control the working state of the buzzer 53 according to the distance signal transmitted by the laser displacement sensor 52 .

[0032] The circumference of the punching head 23, the axis of the fixing column 41 and the axis of the calibration block 51 are all located in the same vertical plane.

[0033] The implementation principle of a high-precision flange punching machine tool in the embodiment of the present application is: When punching the flange side wall, the operator sets the flange to be processed on the positioning column 61, and makes the flange end face abut against the second positioning ring 611, and then uses the cylinder 62 to extend and move the flange to be processed in the direction close to the fixed column 41, so that the flange to be processed is set on the fixed column 41 and abuts against the first positioning ring 45, and then the operator starts the first motor 44, and the first motor 44 drives the turntable 42 to rotate, thereby driving the clamping block 43 to slide away from the fixed column 41 along the length direction of the slide groove 411 until the clamping block 43 abuts against the inner wall of the flange to be processed, thereby coaxially fixing the flange to be processed on the fixed column 41, and then the operator drives the cylinder 62 to contract and reset, thereby driving the positioning column 61 to move away from the flange to be processed, and the installation and fixation of the flange to be processed is completed.

[0034] After the flange to be processed is installed and fixed, the operator uses the second motor 314 to drive the active pulley 311 to rotate. The active pulley 311 drives the first mounting block 315 to slide in the horizontal direction through the synchronous belt 313 and the driven pulley 312. At the same time, the third motor 324 is in a working state. The third motor 324 drives the lead screw 322 to rotate, thereby driving the second mounting block 323 to slide in the vertical direction. The second motor 314 and the third motor 324 work together to move the punching head 23 into the proofreading groove 511. At this time, the laser displacement sensor 52 is in a working state. The four laser displacement sensors 52 detect the distance information between themselves and the punching head 23, and convert it into a distance signal to input into the controller 54. The first servo 55 is used to drive the proofreading block 51 to rotate, so that the laser displacement sensor 52 can detect the punching head 23 from different angles. After repeating several times, the controller 54 records the received distance signal and determines whether the punching head 23 is worn.

[0035] If the punching head 23 is worn, the controller 54 controls the buzzer 53 to sound an alarm, and then the operator uses the second motor 314 and the third motor 324 to move the punching head 23 to a position away from the proofreading block 51, and then removes the bolts 24 to disengage the punching head 23 from the fixing fixture 22. The operator then replaces the new punching head 23 in the mounting groove 221, and inserts the bolts 24 into the threaded hole 222 and the mating hole 231, thereby fixing the punching head 23 to the fixing fixture 22. The above process is repeated, and the punching head 23 is proofread again until the punching head 23 is not worn and is installed correctly.

[0036] After the punching head 23 is calibrated, the operator uses the second motor 314 and the third motor 324 to move the punching head 23 to the top of the flange to be processed, and above the position to be punched. The operator then starts the hydraulic cylinder 21 to extend, driving the fixing fixture 22 to move downward, so that the punching head 23 moves in the direction close to and away from the flange to be processed, and punches the flange to be processed. The operator then uses the second servo engine 46 to drive the fixing column 41 to rotate a preset angle, so that the flange to be processed rotates a preset angle, and continues to punch until the punching is completed. The operator then uses the first motor 44 to drive the turntable 42 to rotate in the opposite direction, so that the clamp 43 moves in the direction close to the fixing column 41, thereby removing the processed flange and performing punching processing on the next flange.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-precision flange punching machine tool, characterized in that: The invention comprises a support (1), a punching assembly (2), a feeding assembly (3), a fixing assembly (4) and a proofreading assembly (5); the punching assembly (2) comprises a hydraulic cylinder (21), a fixing fixture (22), a punching head (23) and a plurality of bolts (24); the fixing end of the hydraulic cylinder (21) is connected to the support (1); the fixing fixture (22) is fixedly arranged on the movable end of the hydraulic cylinder (21); the fixing fixture (22) is provided with a mounting groove (221); the punching head (23) is matched with the mounting groove (221); the fixing fixture (22) is provided with a threaded hole (222); the punching head (23) is provided with a plurality of threaded holes (222); the punching head (23) is provided with a plurality of threaded holes (222); the plurality of threaded holes (222) are ... The support (23) is provided with a matching hole (231); the threaded bolt (24) is inserted into the threaded hole (222) and the matching hole (231), and the threaded bolt (24) is threadedly connected to the fixing fixture (22); the feeding assembly (3) is arranged on the support (1), and the feeding assembly (3) is used to drive the hydraulic cylinder (21) to move; the fixing assembly (4) is arranged on the support (1), and the fixing assembly (4) is used to fix the flange to be processed; the calibration assembly (5) is arranged on the support (1), and the calibration assembly (5) is used to calibrate the punching head (23).

2. The high-precision flange punching machine tool according to claim 1, characterized in that: The calibration component (5) comprises a calibration block (51), a laser displacement sensor (52), a buzzer (53) and a controller (54); the calibration block (51) is arranged on the bracket (1), and a calibration groove (511) is provided on the calibration block (51); at least four laser displacement sensors (52) are evenly arranged along the circumference of the calibration groove (511) and are fixedly connected to the calibration block (51); the laser displacement sensors (52) are used to detect the distance between themselves and the punching head (23). The distance information is converted into a distance signal and input into the controller (54); the buzzer (53) is fixedly arranged on the bracket (1), and the buzzer (53) is used to emit an alarm sound; the controller (54) is fixedly arranged on the bracket (1), the controller (54) is electrically connected to the laser displacement sensor (52) and the buzzer (53), and the controller (54) is used to control the working state of the buzzer (53) according to the distance signal transmitted by the laser displacement sensor (52).

3. The high-precision flange punching machine tool according to claim 2, characterized in that: The proofreading assembly (5) is rotatably connected to the bracket (1), and the proofreading assembly (5) further comprises a first steering gear (55). The first steering gear (55) is fixedly arranged on the bracket (1), and the first steering gear (55) is used to drive the proofreading block (51) to rotate.

4. The high-precision flange punching machine tool according to claim 2, characterized in that: The fixing assembly (4) comprises a fixing column (41), a rotating disk (42), a clamping block (43), a first motor (44) and a first positioning ring (45); the fixing column (41) is arranged on the bracket (1), and the axial direction of the fixing column (41) is perpendicular to the axial direction of the punching head (23); the rotating disk (42) is coaxially arranged inside the fixing column (41) and is rotatably connected to the fixing column (41), and a planar thread is arranged on the rotating disk (42); the fixing column (41) is evenly provided with at least three sliding grooves (411) along its circumference; the clamping block (43) is arranged along the fixing column (41) and the fixing column (41) is provided with a first motor (44) and a first positioning ring (45); At least three clamping blocks (43) are evenly arranged around the circumference of the fixed column (41); the clamping blocks (43) correspond to the sliding grooves (411) one by one; one end of the clamping block (43) is slidably arranged in the sliding groove (411); a plane thread is arranged on the clamping block (43); and the plane thread on the clamping block (43) is meshed with the plane thread on the rotating disk (42); the first motor (44) is fixedly arranged on the fixed column (41); the first motor (44) is used to drive the rotating disk (42) to rotate; and the first positioning ring (45) is coaxially fixedly arranged on the fixed column (41).

5. The high-precision flange punching machine tool according to claim 4, characterized in that: The fixing assembly (4) further comprises a second steering gear (46), wherein the second steering gear (46) is fixedly arranged on the bracket (1), and the fixing column (41) is coaxially fixedly connected to an output shaft of the second steering gear (46).

6. The high-precision flange punching machine tool according to claim 4, characterized in that: The feeding assembly (3) comprises an X-axis feeding component (31) and a Z-axis feeding component (32); the axis of the fixed column (41), the axis of the punching head (23), and the axis of the calibration groove (511) are all located in the same plane; the X-axis feeding component (31) comprises a driving pulley (311), a driven pulley (312), a synchronous belt (313), a second motor (314), and a first mounting block (315); the driving pulley (311) and the driven pulley (312) are both rotatably disposed on the bracket (1); the synchronous belt (313) is wound around the driving pulley (311) and the driven pulley (312). The driving pulley (311) and the driven pulley (312) are mounted on the bracket (1); the second motor (314) is fixedly arranged on the bracket (1), and the second motor (314) is used to drive the driving pulley (311) to rotate; the first mounting block (315) is slidably connected to the bracket (1) and fixedly connected to the synchronous belt (313); the Z-axis feeding component (32) is arranged on the first mounting block (315), and the Z-axis feeding component (32) is used to drive the hydraulic cylinder (21) to move and feed along an axial direction perpendicular to the fixed column (41).

7. The high-precision flange punching machine tool according to claim 6, characterized in that: The Z-axis feeding component (32) comprises a guide rail (321), a lead screw (322), a second mounting block (323) and a third motor (324); the guide rail (321) is fixedly mounted on the first mounting block (315); the lead screw (322) is rotatably mounted on the first mounting block (315), and the axial direction of the lead screw (322) and the axial direction of the guide rail (321) are both perpendicular to the axial direction of the fixed column (41); the second mounting block (323) is slidably connected to the guide rail (321) and is threadedly connected to the lead screw (322); the third motor (324) is fixedly mounted on the first mounting block (315), and the third motor (324) is used to drive the lead screw (322) to rotate; the fixed end of the hydraulic cylinder (21) is fixedly mounted on the second mounting block (323).

8. The high-precision flange punching machine tool according to claim 4, characterized in that: A loading assembly (6) is arranged on the bracket (1), and the loading assembly (6) comprises a positioning column (61) and a cylinder (62); the positioning column (61) is coaxially arranged with the fixed column (41); the cylinder (62) is coaxially arranged with the fixed column (41), the fixed end of the cylinder (62) is fixedly arranged on the bracket (1), and the positioning column (61) is threadedly connected to the movable end of the cylinder (62); a second positioning ring (611) is coaxially fixedly arranged on the positioning column (61).

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