Hole machining device for rapid positioning of flange plate

Abstract

The invention relates to the technical field of punching and positioning, and discloses a flange plate quick positioning hole machining device which comprises a horizontally-arranged workbench, a flange plate support is arranged on the left side of the top of the workbench, and a flange plate is rotationally connected to the flange plate support on the workbench; through the arrangement of a positioning plug pin and a first spring, after the positioning plug pin is aligned to a first flange hole, the positioning plug pin moves downwards under the elastic action of the first spring to drive a first traction assembly to drag a first convex block to extrude a second convex block to move towards a third convex block, so that the second convex block and the third convex block are connected, and a positioning shaft sleeve and a positioning sleeve are fixed; at the moment, the angle orientation of the positioning rod is limited, in the next punching process of the flange plate, it is not needed to manually rotate the positioning rod with the positioning shaft sleeve as the axis to find the next punching position, the punching position can be accurately and rapidly found by directly rotating the flange plate, the punching precision is guaranteed, and meanwhile the punching efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hole punching and positioning, and in particular to a hole processing device for rapid positioning of a flange plate. Background Art

[0002] There are relatively few large-scale drilling and milling machines. Workpieces that need to be processed by large-scale drilling machines generally need to be sent out to factories with corresponding equipment for processing, and then transported back after processing. The whole process is time-consuming and labor-intensive, and long-distance transportation can easily cause damage to the workpiece.

[0003] Chinese invention patent CN110421195B discloses a large flange workpiece drilling and positioning device, including a horizontally arranged workbench, a vertically arranged drilling machine is provided on the right side of the top surface of the workbench, a vertical positioning plate support is provided on the left side of the drilling machine, a horizontal positioning plate is provided in the positioning plate support, a positioning sleeve is provided on the left side of the positioning plate, a circular flange support is provided on the left side of the positioning plate support, a flange is provided on the upper part of the flange support, a center positioning pin is provided at the center of the top surface of the flange, a horizontally arranged positioning rod is provided at the relative position of the top of the flange, vertical through holes are provided at both ends of the positioning rod, a plurality of processing holes are evenly provided in the circumference of the flange, and an auxiliary support is provided at the relative position of the lower part of the flange. The beneficial effects of the present invention are: not only can accurately positioned holes be punched on large flange-type workpieces, but also the operation is simple.

[0004] In the above-mentioned comparative documents, holes are drilled on large flange workpieces by calculating and then presetting positioning rods. However, in the actual operation process, the following problems exist: since both ends of the positioning rod are movably connected and the angle of the positioning rod is not fixed, each time the next drilling position is found, the positioning rod needs to be manually operated to find the accurate drilling position, which reduces the drilling efficiency.

[0005] Therefore, it is necessary to provide a hole processing device for rapid positioning of a flange plate to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a hole processing device for quickly positioning a flange plate, so as to solve the defects of the prior art mentioned in the above background technology. Since both ends of the positioning rod are movably connected and the angle of the positioning rod is not fixed, it is necessary to manually operate the positioning rod to find the accurate punching position each time looking for the next punching position, thereby reducing the punching efficiency and other problems.

[0007] Based on the above ideas, the present invention provides the following technical solutions: it includes a horizontally arranged workbench, a flange support is arranged on the left side of the top of the workbench, the flange plate is rotatably connected to the flange support on the workbench, a drilling machine is arranged on the right side of the top of the workbench, a positioning plate is arranged directly below the drill bit of the drilling machine, a positioning sleeve is fixedly installed inside the positioning plate, a positioning sleeve is arranged on the outside of the positioning sleeve, the positioning sleeve and the positioning sleeve are fixed by a second protrusion, a third protrusion is arranged on one side of the second protrusion, a first protrusion is arranged on the other side of the second protrusion, and a first traction assembly is arranged at the end of the first protrusion close to the second protrusion ; A positioning rod is fixedly connected to the outer side of the positioning sleeve, and a sleeve is fixedly connected to the end of the positioning rod away from the positioning sleeve. The interior of the sleeve is connected to a positioning pin through a first spring, and the top of the positioning pin is fixedly connected to the first traction assembly. After the first hole is punched in the flange plate, the flange plate is rotated, and the positioning rod is rotated with the positioning sleeve as the axis so that the positioning pin is aligned with the first flange hole. The positioning pin moves downward under the elastic force of the first spring, driving the first traction assembly to pull the first protrusion to squeeze the second protrusion and move toward the direction of the third protrusion, so that the second protrusion and the third protrusion are connected, thereby fixing the positioning sleeve and the positioning sleeve.

[0008] As a further solution of the present invention: the first traction assembly includes three first pulleys and a first pull rope, wherein two of the first pulleys are rotatably connected to the positioning rod, and one is located at the top of one side of the positioning rod, and one is located at the bottom of the other side of the positioning rod, and the third first pulley is rotatably connected to the sleeve; the first pull rope passes through the three first pulleys in sequence, and one end of the first pull rope passes through the sleeve and is fixed to the positioning pin, and the other end passes through the positioning sleeve and is connected to the first protrusion.

[0009] As a further solution of the present invention: the side of the first protrusion close to the second protrusion is set to an arc surface, the two sides of the second protrusion are set to arc surfaces, the cross-sectional shape of the middle part of the outer side of the positioning sleeve is set to a trapezoid, and a slot is provided on the top of the second protrusion; the third protrusion is connected to the positioning sleeve through a second spring, the side of the third protrusion close to the second protrusion is set to an arc surface, and the third protrusion is adapted to the slot.

[0010] As a further solution of the present invention: a support block is arranged near the bottom of the flange plate, the support block is arranged directly below the drill bit, and a through hole is opened on the top of the support block, and the position of the through hole is on the same vertical line as the drill bit; two groups of fixing blocks are symmetrically arranged on the top of the flange plate, and the two groups of fixing blocks are driven to lift, clamp or loosen by a driving assembly Open flange plate.

[0011] As a further solution of the present invention: the driving assembly includes a rotating rod, which passes through the support plate and rotates with it, and two groups of symmetrically arranged turntables are fixedly connected to the outside of the rotating rod, and a sliding groove is opened on the turntable, and the fixed block is slidably connected to the inside of the sliding groove; and one end of the fixed block passes through the sliding groove and is slidably connected to the support plate.

[0012] As a further solution of the present invention: a limiting assembly is arranged on the outer side of the rotating rod, and the limiting assembly includes a ratchet, and the ratchet is fixedly connected to the outer side of the rotating rod. A pawl is arranged on one side of the ratchet, and the pawl is fixed to the support rod through a torsion spring, and the support rod is fixedly connected to the support plate.

[0013] As a further solution of the present invention: the rotating rod and the positioning pin are connected via a second traction assembly, the second traction assembly includes two second pulleys, one of the second pulleys is rotatably connected to the positioning rod, and the other second pulley is rotatably connected to the rotating rod via a one-way damping bearing, a second pull rope is sleeved on the outer side of the second pulley, one end of the second pull rope is fixedly connected to the second pulley on the outer side of the rotating rod, and the other end passes through a sleeve and is fixedly connected to the top end of the positioning pin.

[0014] As a further solution of the present invention: the length of the second pull rope can be adjusted according to the distance from the punching position of the flange to the center point of the flange.

[0015] Compared with the prior art, the beneficial effect of the present invention is that, through the setting of the positioning pin and the first spring, after the first hole is punched on the flange plate, the flange plate is rotated, and the positioning rod is rotated with the positioning sleeve as the axis to find the punching position of the second flange plate, so that the positioning pin is aligned with the first flange hole, the positioning pin is moved downward by the elastic force of the first spring to drive the first traction assembly to pull the first protrusion to squeeze the second protrusion and move toward the direction of the third protrusion, so that the second protrusion and the third protrusion are connected, and the positioning sleeve and the positioning sleeve are fixed. At this time, the angle direction of the positioning rod is limited. In the subsequent punching of the flange plate, there is no need to manually rotate the positioning rod with the positioning sleeve as the axis to find the next punching position. The punching position can be found accurately and quickly by directly rotating the flange plate, thereby ensuring the punching accuracy and improving the punching efficiency.

[0016] Compared with the prior art, the beneficial effect of the present invention is that a support block is provided at the bottom of the flange plate near the flange drilling position to prevent the flange plate from tilting during drilling and improve the drilling accuracy. The stability and drilling accuracy of the flange plate are further improved by clamping from the top of the flange plate with two sets of fixing blocks.

[0017] Compared with the prior art, the beneficial effect of the present invention is that, through the setting of the second traction component and the cooperation of the driving component, while releasing the fixation of the flange plate, the positioning pin can be taken out from the last hole that has been opened, and continue to find the next punching point, saving an operation step and further improving the efficiency of punching. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a main structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the positioning rod structure of the present invention; Figure 3 It is a schematic diagram of the positioning latch structure of the present invention; Figure 4 It is a schematic diagram of the positioning sleeve structure of the present invention; Figure 5 The present invention Figure 4 A schematic diagram of the enlarged structure at point A; Figure 6 It is a schematic diagram of the structure of the fixed block of the present invention; Figure 7 It is a schematic diagram of the structure of the drive assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the turntable of the present invention; Fig. 9 It is a schematic diagram of the structure of the limit assembly of the present invention.

[0020] In the figure: 1. sleeve; 2. positioning rod; 201. positioning sleeve; 3. positioning pin; 301. first spring; 4. first traction assembly; 401. first pulley; 402. first pull rope; 403. first protrusion; 5. second protrusion; 501. slot; 6. third protrusion; 601. second spring; 7. positioning sleeve; 8. driving assembly; 801. rotating rod; 802. turntable; 803. slide slot; 9. second traction assembly; 901. second pulley; 902. second pull rope; 10. fixing block; 11. limiting assembly; 1101. ratchet; 1102. pawl; 1103. torsion spring; 12. drilling machine; 13. support block. DETAILED DESCRIPTION

[0021] Embodiment 1, as Figures 1 to 5As shown, a hole processing device for rapid positioning of a flange plate comprises a horizontally arranged workbench, a flange support is arranged on the left side of the top of the workbench, the flange plate is rotatably connected to the flange support on the workbench, a drilling machine 12 is arranged on the right side of the top of the workbench, a positioning plate is arranged directly below the drill bit of the drilling machine 12, a positioning sleeve 7 is fixedly installed inside the positioning plate, a positioning sleeve 201 is arranged on the outside of the positioning sleeve 7, the positioning sleeve 201 and the positioning sleeve 7 are fixed by a second protrusion 5, a third protrusion 6 is arranged on one side of the second protrusion 5, a first protrusion 403 is arranged on the other side of the second protrusion 5, and a first traction component 4 is arranged on the end of the first protrusion 403 close to the second protrusion 5; a positioning rod 2 is fixedly connected to the outside of the positioning sleeve 201, a sleeve 1 is fixedly connected to the end of the positioning rod 2 away from the positioning sleeve 201, a positioning pin 3 is connected to the inside of the sleeve 1 through a first spring 301, and the top of the positioning pin 3 is fixedly connected to the first traction component 4.

[0022] In this embodiment, the flange plate is placed on the flange support in advance, and the center positioning pin is installed, and the flange plate and the flange support are rotatably connected together. This is the prior art and will not be described in detail here. The positioning sleeve 7 is coaxially arranged with the drill bit, and the inner diameter of the positioning sleeve 7 is equal to the outer diameter of the drill bit. The distance between the two through holes of the positioning rod 2 is calculated according to the diameter of the flange plate, the number of processed holes, and the position of the processed holes. The positioning rod 2 is processed. Here, the outer diameter of the positioning pin 3 is equal to the inner diameter of the positioning sleeve 7. Therefore, when the positioning rod 2 is processed, the positioning sleeve 201 is rotatably installed on the outside of the positioning sleeve 7, and the angular direction of the positioning rod 2 is roughly adjusted with the axis of the positioning sleeve 201. At this time, the initial state of the positioning pin 3 is almost completely retracted into the interior of the sleeve 1, and the bottom end of the positioning pin 3 is in contact with the upper surface of the flange plate; After the first hole is punched in the flange plate, the drill bit is driven upward by the drilling machine 12, the flange plate is rotated, and then the positioning rod 2 is rotated with the positioning sleeve 201 as the axis to find the punching position of the second flange plate, so that the positioning pin 3 is aligned with the first flange hole. The positioning pin 3 moves downward under the elastic force of the first spring 301, driving the first traction assembly 4 to pull the first protrusion 403 to squeeze the second protrusion 5 to move toward the direction of the third protrusion 6, so that the second protrusion 5 and the third protrusion 6 are connected, and the positioning sleeve 201 and the positioning sleeve 7 are fixed. At this time, the angle direction of the positioning rod 2 is limited.

[0023] Furthermore, the first traction assembly 4 includes three first pulleys 401 and a first pull rope 402, wherein two first pulleys 401 are rotatably connected to the positioning rod 2, and one is located at the top of one side of the positioning rod 2, and the other is located at the bottom of the other side of the positioning rod 2, and the third first pulley 401 is rotatably connected to the sleeve 1; the first pull rope 402 passes through the three first pulleys 401 in sequence, and one end of the first pull rope 402 passes through the sleeve 1 and is fixed to the positioning pin 3, and the other end passes through the positioning sleeve 201 and is connected to the first protrusion 403.

[0024] In this embodiment, when the flange plate is rotated so that the positioning pin 3 is aligned with the first hole, the positioning pin 3 moves toward the hole under the elastic force of the first spring 301. At this time, the positioning pin 3 moves to drive the first pull rope 402 to pull the first protrusion 403 to move toward the second protrusion 5.

[0025] Furthermore, the side of the first protrusion 403 close to the second protrusion 5 is set to an arc surface, both sides of the second protrusion 5 are set to arc surfaces, the cross-sectional shape of the middle part of the outer side of the positioning sleeve 7 is set to a trapezoid, and a slot 501 is opened on the top of the second protrusion 5; the third protrusion 6 is connected to the positioning sleeve 201 through a second spring 601, and the side of the third protrusion 6 close to the second protrusion 5 is set to an arc surface, and the third protrusion 6 is adapted to the slot 501.

[0026] In this embodiment, when the first protrusion 403 moves toward the direction of the second protrusion 5 under the traction of the first pull rope 402, the arc surface of the first protrusion 403 squeezes the second protrusion 5 to move in the direction of the third protrusion 6, and the third protrusion 6 overcomes the force of the second spring 601 and shrinks in the direction of the second spring 601 under the squeezing of the second protrusion 5, until the second protrusion 5 continues to move in the direction of the third protrusion 6, so that the third protrusion 6 is aligned with the slot 501, and the third protrusion 6 is stuck in the slot 501 under the force of the second spring 601, so that the second protrusion 5 and the third protrusion 6 are fixed, and at this time, the second protrusion 5 is tightly pressed against the arc surface position of the positioning sleeve 7 with one end of the positioning sleeve 7, so that the relationship between the positioning sleeve 201 and the positioning sleeve 7 changes from a rotating connection to a fixed connection. It should be emphasized here that the elastic force of the first spring 301 is greater than the elastic force of the second spring 601.

[0027] Embodiment 2, as Figures 6 to 9 As shown, a support block 13 is arranged near the bottom of the flange plate, the support block 13 is arranged just below the drill bit, and a through hole is opened on the top of the support block 13, and the position of the through hole is on the same vertical line as the drill bit; two groups of fixing blocks 10 are symmetrically arranged on the top of the flange plate, and the two groups of fixing blocks 10 are driven by the driving assembly 8 to lift, clamp or loosen Open flange plate.

[0028] In this embodiment, a support block 13 is provided at the bottom of the flange plate near the flange drilling position to prevent the flange plate from tilting during drilling and improve the drilling accuracy. The stability and drilling accuracy of the flange plate are further improved by clamping from the top of the flange plate with two sets of fixing blocks 10.

[0029] Furthermore, the driving assembly 8 includes a rotating rod 801, which passes through the support plate and rotates therewith. Two groups of symmetrically arranged turntables 802 are fixedly connected to the outside of the rotating rod 801. The turntables 802 are provided with sliding grooves 803. The fixed block 10 is slidably connected to the inside of the sliding grooves 803; and one end of the fixed block 10 passes through the sliding grooves 803 and is slidably connected to the support plate.

[0030] After the flange plate is placed on the top of the support block 13, the rotating rod 801 can be rotated to drive the turntable 802 to rotate. The rotation of the turntable 802 makes the fixed block 10 simultaneously located in the slide groove 803 and the slide groove of the support plate to slide, and the fixed block 10 can be driven down in turn to clamp the upper and lower parts of the flange plate, start the drilling machine 12, and start to open the first hole on the flange plate. After the first hole is drilled, the rotating rod 801 can be rotated in the opposite direction according to the same working principle to drive the fixed block 10 to lift up, and the second drilling point is found by rotating the positioning rod 2 and the flange plate, and the flange plate is fixed again using the fixed block 10.

[0031] Furthermore, a limit assembly 11 is provided on the outer side of the rotating rod 801, and the limit assembly 11 includes a ratchet 1101, which is fixedly connected to the outer side of the rotating rod 801, and a pawl 1102 is provided on one side of the ratchet 1101, and the pawl 1102 is fixed to the support rod through a torsion spring 1103, and the support rod is fixedly connected to the support plate.

[0032] In this embodiment, when the rotating rod 801 is rotated to drive the fixed block 10 to move downward, the ratchet 1101 rotates simultaneously with the rotating rod 801, and the ratchet 1101 can only rotate in one direction under the limitation of the pawl 1102. Therefore, after the fixed block 10 fixes the flange plate, the rotating rod 801 will not reverse. When the flange plate is released, the pawl 1102 is rotated. At this time, the ratchet 1101 loses the limitation of the pawl 1102, and the rotating rod 801 can be rotated in the opposite direction to drive the fixed block 10 to move upward. After the fixed block 10 is reset, the pawl 1102 is reset under the action of the torsion spring 1103.

[0033] As a further solution of the present invention: the rotating rod 801 is connected to the positioning pin 3 through a second traction assembly 9, the second traction assembly 9 includes two second pulleys 901, one of the second pulleys 901 is rotatably connected to the positioning rod 2, and the other second pulley 901 is rotatably connected to the rotating rod 801 through a one-way damping bearing, and a second pull rope 902 is sleeved on the outer side of the second pulley 901, one end of the second pull rope 902 is fixedly connected to the second pulley 901 on the outer side of the rotating rod 801, and the other end passes through the sleeve 1 and is fixedly connected to the top end of the positioning pin 3.

[0034] In this embodiment, after the second hole is opened, the rotating rod 801 is rotated in the opposite direction to drive the fixed block 10 to move upward to loosen the flange plate. While the rotating rod 801 rotates in the opposite direction, it drives the second pulley 901 to rotate. The positioning pin 3 is pulled by the cooperation of the second pulley 901 and the second pull rope 902 to overcome the force of the first spring 301 and move upward in the direction away from the first hole until the positioning pin 3 is disengaged from the first hole. At this time, the flange plate can continue to be rotated. Since the angle of the positioning rod 2 has been determined when searching for the second hole, when the flange plate is rotated, when the second hole that has been opened is aligned with the positioning pin 3, the positioning pin 3 is inserted into the second hole that has been opened by the force of the first spring 301. At this time, the third hole to be opened is located directly below the drill bit. This process is repeated and so on until all the holes on the flange plate are opened. It should be emphasized here that the second pulley 901 located outside the rotating rod 801 does not rotate when the rotating rod 801 rotates in the positive direction to drive the fixed block 10 to descend.

[0035] Furthermore, the length of the second pull rope 902 can be adjusted according to the distance from the flange punching position to the flange center point.

[0036] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hole processing device for rapid positioning of a flange plate, comprising a horizontally arranged workbench, a flange support is arranged on the left side of the top of the workbench, the flange plate is rotatably connected to the flange support on the workbench, a drilling machine (12) is arranged on the right side of the top of the workbench, and a positioning plate is arranged directly below the drill bit of the drilling machine (12), characterized in that: A positioning sleeve (7) is fixedly installed inside the positioning plate, a positioning shaft sleeve (201) is arranged outside the positioning sleeve (7), the positioning shaft sleeve (201) and the positioning sleeve (7) are fixed via a second protrusion (5), a third protrusion (6) is arranged on one side of the second protrusion (5), a first protrusion (403) is arranged on the other side of the second protrusion (5), and a first traction assembly (4) is arranged at one end of the first protrusion (403) close to the second protrusion (5); The outer side of the positioning sleeve (201) is fixedly connected to a positioning rod (2); one end of the positioning rod (2) away from the positioning sleeve (201) is fixedly connected to a sleeve (1); the interior of the sleeve (1) is connected to a positioning pin (3) via a first spring (301); the top end of the positioning pin (3) is fixedly connected to a first traction assembly (4); after the first hole is punched on the flange plate, the flange plate is rotated, and the positioning rod (2) is rotated with the positioning sleeve (201) as the axis, so that the positioning pin (3) is aligned with the first flange hole. The positioning pin (3) is moved downward by the elastic force of the first spring (301), driving the first traction assembly (4) to pull the first protrusion (403) to squeeze the second protrusion (5) and move it in the direction of the third protrusion (6), so that the second protrusion (5) and the third protrusion (6) are connected, and the positioning sleeve (201) and the positioning sleeve (7) are fixed.

2. A flange plate rapid positioning hole processing device according to claim 1, characterized in that: The first traction assembly (4) comprises three first pulleys (401) and a first pull rope (402), wherein two of the first pulleys (401) are rotatably connected to the positioning rod (2), one is located at the top of one side of the positioning rod (2), and the other is located at the bottom of the other side of the positioning rod (2), and the third first pulley (401) is rotatably connected to the sleeve (1); The first pull rope (402) passes through the three first pulleys (401) in sequence, and one end of the first pull rope (402) passes through the sleeve (1) and is fixed to the positioning pin (3), while the other end passes through the positioning sleeve (201) and is connected to the first protrusion (403).

3. The hole processing device for rapid positioning of flange plate according to claim 1, characterized in that: The side of the first protrusion (403) close to the second protrusion (5) is arranged as an arc surface, the two sides of the second protrusion (5) are arranged as arc surfaces, the cross-sectional shape of the middle part of the outer side of the positioning sleeve (7) is arranged as a trapezoid, and the top of the second protrusion (5) is provided with a slot (501); The third protrusion (6) is connected to the positioning sleeve (201) via a second spring (601), and a side of the third protrusion (6) close to the second protrusion (5) is configured as an arc surface. The third protrusion (6) is matched with the slot (501).

4. The hole processing device for rapid positioning of flange plate according to claim 1, characterized in that: A support block (13) is arranged near the bottom of the flange plate, the support block (13) is arranged directly below the drill bit, and a through hole is opened on the top of the support block (13), and the position of the through hole is on the same vertical line as the drill bit; Two groups of fixing blocks (10) are symmetrically arranged on the top of the flange plate, and the two groups of fixing blocks (10) are driven to rise and fall by a driving assembly (8) to clamp or release the flange plate.

5. A flange plate rapid positioning hole processing device according to claim 4, characterized in that: The driving assembly (8) comprises a rotating rod (801), the rotating rod (801) passes through the supporting plate and rotates with it, two groups of symmetrically arranged rotating disks (802) are fixedly connected to the outside of the rotating rod (801), the rotating disks (802) are provided with sliding grooves (803), and the fixed block (10) is slidably connected to the inside of the sliding grooves (803); One end of the fixed block (10) passes through the slide groove (803) and is slidably connected to the support plate.

6. A flange plate rapid positioning hole processing device according to claim 5, characterized in that: A limit assembly (11) is arranged on the outer side of the rotating rod (801), the limit assembly (11) comprising a ratchet (1101), the ratchet (1101) being fixedly connected to the outer side of the rotating rod (801), a pawl (1102) being arranged on one side of the ratchet (1101), the pawl (1102) being fixed to a support rod via a torsion spring (1103), and the support rod being fixedly connected to a support plate.

7. A flange plate rapid positioning hole processing device according to claim 6, characterized in that: The rotating rod (801) and the positioning pin (3) are connected via a second traction assembly (9), the second traction assembly (9) comprising two second pulleys (901), one of the second pulleys (901) being rotatably connected to the positioning rod (2), and the other second pulley (901) being rotatably connected to the rotating rod (801) via a one-way damping bearing, a second pull rope (902) being sleeved on the outer side of the second pulley (901), one end of the second pull rope (902) being fixedly connected to the second pulley (901) on the outer side of the rotating rod (801), and the other end of the second pull rope (902) passing through a sleeve (1) and being fixedly connected to the top end of the positioning pin (3).

8. The hole processing device for rapid positioning of flange plate according to claim 7, characterized in that: The length of the second pull rope (902) can be adjusted according to the distance from the flange punching position to the flange center point.

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