Automatic drilling tool for H-shaped steel column

Abstract

The invention relates to the technical field of steel drilling, in particular to an H-shaped steel column automatic drilling tool which is characterized in that the H-shaped steel column automatic drilling tool comprises a machine tool, second drilling assemblies used for drilling a wing plate of H-shaped steel are arranged on the two sides of the top face of the machine tool respectively, and side pressing assemblies used for clamping the H-shaped steel are symmetrically arranged between the two second drilling assemblies; the side pressing assembly is in sliding connection with the top face of the machine tool, conveying assemblies are arranged on the two sides of the side pressing assembly correspondingly and fixedly connected with the two sides of the top face of the machine tool, and a first drilling assembly used for drilling a web of the H-shaped steel is arranged above the machine tool. According to the overturning-free drilling device, overturning-free drilling operation can be conducted on the H-shaped steel under the condition that the H-shaped steel is not overturned, the precision of the drilling position can be effectively improved, meanwhile, the efficiency of the drilling procedure can be improved, the labor intensity of workers is effectively reduced, and the safety of operators is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of steel drilling, in particular to an automatic drilling tool for an H-shaped steel column. Background Art

[0002] High-speed rail contact network pillars generally use H-shaped steel columns for contact network support. H-shaped steel column flanges and webs need to be drilled to meet the installation of wrist arms, shoulder frames or other equipment on site. Drilling is a basic process in mechanical processing, and its processing cost and efficiency are related to the production efficiency and cost of the product. At present, H-shaped steel column drilling adopts radial drilling machine plus drilling template. The cross-section of the steel is "I-shaped", which requires separate processing of the three sides of the steel. When one side is processed, it needs to be turned over for processing on the other side. Due to the large volume and weight of H-shaped steel, it is very difficult to turn over the H-shaped steel column. At present, manual methods are mostly used to turn over H-shaped steel, which requires the cooperation of cranes. Not only is the work efficiency low and the operation is cumbersome, but it also requires many operators and poor safety. Moreover, due to the use of manual drilling, the positioning accuracy is poor, and quality problems such as the hole position deviation exceeding the relevant standards often occur, resulting in rework and repair, which not only increases production costs, but also further reduces production efficiency, and cannot meet the construction period requirements of on-site batch supply.

[0003] Therefore, there is an urgent need for an automatic drilling tool for H-shaped steel columns, which can perform non-flipping drilling operations on H-shaped steel without flipping the H-shaped steel. This can not only effectively improve the accuracy of the drilling position, but also improve the efficiency of the drilling process, effectively reduce the labor intensity of workers, and ensure the safety of operators. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic drilling tool for H-shaped steel columns to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following scheme: an automatic drilling tool for H-shaped steel columns, comprising a machine tool, second drilling assemblies for drilling holes in the wing plates of the H-shaped steel are respectively arranged on both sides of the top surface of the machine tool, side clamping assemblies for clamping the H-shaped steel are symmetrically arranged between the two second drilling assemblies, the side clamping assemblies are slidably connected to the top surface of the machine tool, transmission assemblies are respectively arranged on both sides of the side clamping assemblies, the transmission assemblies are fixedly connected to both sides of the top surface of the machine tool, and a first drilling assembly for drilling holes in the web of the H-shaped steel is arranged above the machine tool.

[0006] Preferably, a first slide groove is provided in the top surface of the machine tool, two first movable plates are slidably connected in the first slide groove, and one end of the first movable plate extending out of the first slide groove is fixedly connected to the side clamping assembly.

[0007] Preferably, the two first movable plates are symmetrically arranged.

[0008] Preferably, the side clamping assembly includes a plurality of fixed plates, the bottom surface of the fixed plate is fixedly connected to the first movable plate, the fixed end of the third hydraulic cylinder is fixedly connected inside the fixed plate, and the piston end of the third hydraulic cylinder extending outside the top surface of the fixed plate is fixedly connected to a clamping plate.

[0009] Preferably, a plurality of the fixing plates are arranged at equal intervals, and a gap is left between two adjacent fixing plates for the second drilling assembly to drill holes in the wing plates of the H-shaped steel.

[0010] Preferably, the second drilling assembly includes a second support plate, second CNC slides are respectively installed on both sides of the second support plate, the second CNC slide is slidably connected to a support column on a side away from the second support plate, a plurality of fixed ends of fourth hydraulic cylinders are fixedly connected to the second support plate, the piston end of the fourth hydraulic cylinder is fixedly connected to a second drilling spindle box, the second drilling spindle box is arranged toward the fixed plate, and the second drilling spindle box is arranged in a one-to-one correspondence with the gap.

[0011] Preferably, the first drilling assembly includes a top frame arranged above the machine tool, a first support plate is slidably connected to the top frame, first CNC slides are respectively installed on both sides of the first support plate, a side of the first CNC slide away from the first support plate is slidably connected to the inner wall of the top frame, a plurality of fixed ends of second hydraulic cylinders are fixedly connected to the first support plate, a first drilling spindle box is fixedly connected to the piston end of the second hydraulic cylinder, and the first drilling spindle box is arranged toward the machine tool.

[0012] Preferably, one end of the support column is fixedly connected to the machine tool, and the other end of the support column is fixedly connected to the top frame.

[0013] Preferably, the conveying assembly comprises a support platform fixedly connected to the machine tool, and two sides of one end of the support platform facing away from the machine tool are respectively fixedly connected with fixed blocks, and a roller is rotatably connected between the two fixed blocks.

[0014] Preferably, an automatic feeding assembly for conveying H-shaped steel is provided on one side of the machine tool, and the automatic feeding assembly is arranged corresponding to any of the rollers.

[0015] The present invention discloses the following technical effects:

[0016] The present invention can clamp the H-shaped steel on the machine tool through the side clamping assembly, and then drill the web of the H-shaped steel through the first drilling assembly and the wing plate of the H-shaped steel through the second drilling assembly. The H-shaped steel can be drilled without flipping over the H-shaped steel, which can not only effectively improve the accuracy of the drilling position, but also improve the efficiency of the drilling process, effectively reduce the labor intensity of workers, and ensure the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the machine tool, support column and top frame of the present invention;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the machine tool of the present invention;

[0021] Figure 4 It is a side structural schematic diagram of the side clamping device of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the fixing plate of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the transmission component of the present invention;

[0024] Among them, 1. machine tool; 2. first drilling assembly; 3. side clamping assembly; 4. second drilling assembly; 5. support table; 11. first slide; 12. second slide; 13. first movable plate; 14. first hydraulic cylinder; 15. slider; 21. top frame; 22. first CNC slide; 23. third slide; 24. second hydraulic cylinder; 31. fixed plate; 32. clamping plate; 33. third hydraulic cylinder; 41. support column; 42. second CNC slide; 43. fourth slide; 44. fourth hydraulic cylinder; 51. fixed block; 52. roller. DETAILED DESCRIPTION

[0025] The possible implementation schemes found in the art are:

[0026] The patent with patent announcement number CN221734871U discloses an H-steel column drilling device, including a base, a gantry, a gearbox beam, a drive unit, a drill chuck and a workbench. The gantry is guided to slide on the base and can be locked in position; the workbench is arranged on the base and can place multiple H-steel columns arranged side by side, the gearbox beam is horizontally mounted between two columns of the gantry and can be guided to slide in the vertical direction and lock the height position, the drive unit is arranged on the gearbox beam and outputs to the input end of the gearbox beam, the output end of the gearbox beam is multiple and arranged side by side downward, and a drill chuck is installed on the output end of the gearbox beam, and the drill chuck clamps the drill bit to complete the processing of the fixed hole on the H steel column.

[0027] The driving unit specifically adopts a first reduction motor, and a driving gear, an intermediate transmission gear and an output gear are arranged in the gearbox beam. The downward output shaft of the first reduction motor is coaxially connected to the driving gear, and the intermediate transmission gear is meshed with the driving gear and the output gear; there are multiple intermediate transmission gears and output gears and they are arranged in a line, and the driving gear and the bottom shaft of each output gear are connected to the drill chuck through a tapered sleeve.

[0028] It also includes a second reduction motor. A linear guide and a rack are vertically arranged on the inner side of the gantry column. End boxes are respectively arranged at both ends of the gearbox beam. A slider is arranged on the side of the end box facing the gantry column. The slider guides and slides on the linear guide. The second reduction motor is arranged on the end box. A lifting gear is installed on the output end of the second reduction motor with a braking function. The lifting gear is meshed with the rack.

[0029] Columns extend from both ends of the top crossbeam of the gantry, and the cantilever end of the crossbeam and the outer side wall of the column are reinforced by triangular rib plates.

[0030] An electromagnet seat is provided at the bottom of the gantry column, and the electromagnet seat can be adsorbed on the steel base.

[0031] It also includes a bottom wheel assembly, which includes a mounting plate, a compression sleeve and a directional wheel. The mounting plate is arranged on the top surface of the electromagnet seat and is fixed in the middle with bolts. Both ends of the mounting plate protrude out of the electromagnet seat and the bottom is respectively fixedly connected to the compression sleeve, and the bottom of the compression sleeve is fixedly connected to the directional wheel. When the electromagnet seat is not adsorbed, the compression sleeve releases the compression state to allow the electromagnet seat to be suspended in the air, and the directional wheel moves along the long side direction of the base.

[0032] Concave positioning platforms are provided at two long side positions of the base, and directional wheels are provided along the long side direction of the base, and the directional wheels run on the positioning platforms.

[0033] A plurality of H-steel columns are placed side by side on the table of a workbench, with the wing plates of the H-steel columns facing the drill chuck; a positioning block is arranged on the workbench, and the positioning block limits the two sides of the wing plates at the bottom of the H-steel columns.

[0034] This patent sets an input end and multiple output ends through the gearbox beam, which can drive multiple output ends to rotate at high speed under the drive of a drive unit. The drill chuck installed on the output end clamps the drill bit to complete the processing of the fixing holes on the wing plate of the H steel column. The gearbox beam is raised and lowered once to complete the simultaneous processing of multiple fixing holes, which greatly improves the processing efficiency. Through the longitudinal movement of the gantry, the next group of fixing holes can be processed simultaneously without re-clamping the H steel column.

[0035] The patented H-steel column drilling device has multiple drill chucks installed under the gearbox beam, which can process multiple H-steel columns at the same time, greatly improving the working efficiency.

[0036] In addition, the patent reasonably sets the transmission gear in the gearbox beam, and the bottom shafts of the output gear and the driving gear are used as the output end, so that one input and multiple outputs can be achieved, and drilling can be performed synchronously. By setting a linear guide and a rack on the inner side of the column of the gantry, and cooperating with a slider and a lifting gear, the vertical guide displacement of the gearbox beam is realized and can be locked at any height position within the travel range. By protruding the outer wall of the column through the crossbeam and reinforcing it with a rib plate, the structural strength of the gantry can be increased, the stability can be improved, and the drilling processing accuracy can be improved. By setting the electromagnet seat at the bottom of the gantry column and positioning it by an electromagnetic adsorption base, the longitudinal displacement of the gantry can be quickly positioned and quickly enter the drilling station; by setting the bottom wheel assembly, the electromagnet seat is suspended by the reset force of the compression spring, and the directional wheel moves along the long side direction of the base, which is convenient for adjusting the longitudinal position of the gantry and realizing the drilling operation of fixed holes at different heights. By setting the positioning platform at the long side of the base, the directional wheel can be guided and positioned to avoid the deviation of the gantry. By limiting the two side edges of the bottom wing plate of the H-steel column through the positioning block, the H-steel column can be quickly positioned to ensure that the relative positions of the drill chuck and the H-steel column are accurate and consistent.

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figure 1-Figure 6The present invention provides an automatic drilling tool for H-shaped steel columns, comprising a machine tool 1, wherein second drilling assemblies 4 for drilling holes in the wing plates of the H-shaped steel are respectively arranged on both sides of the top surface of the machine tool 1, and side clamping assemblies 3 for clamping the H-shaped steel are symmetrically arranged between the two second drilling assemblies 4, the side clamping assemblies 3 are slidably connected to the top surface of the machine tool 1, and transmission assemblies are respectively arranged on both sides of the side clamping assemblies 3, and the transmission assemblies are fixedly connected to both sides of the top surface of the machine tool 1, and a first drilling assembly 2 for drilling holes in the web of the H-shaped steel is arranged above the machine tool 1.

[0040] The present invention can clamp the H-beam on the machine tool 1 through the side clamping component 3, and then drill the web of the H-beam through the first drilling component 2 and the wing plate of the H-beam through the second drilling component 4. The H-beam can be drilled without flipping over the H-beam, which can not only effectively improve the accuracy of the drilling position, but also improve the efficiency of the drilling process, effectively reduce the labor intensity of workers, and ensure the safety of operators.

[0041] Further optimization scheme, a first slide groove 11 is provided in the top surface of the machine tool 1, and two first movable plates 13 are slidably connected in the first slide groove 11, and one end of the first movable plate 13 extending outside the first slide groove 11 is fixedly connected to the side clamping assembly 3. Slide blocks 15 are fixedly connected to both ends of the first movable plate 13, and the slide block 15 is slidably connected to the second slide groove 12, and the second slide groove 12 is provided on the inner wall of the first slide groove 11; the first movable plate 13 moves along the first slide groove 11 by the movement of the slide block 15 along the second slide groove 12, so that the first movable plate 13 can stably drive the side clamping assembly 3 to move.

[0042] In a further optimized solution, the two first movable plates 13 are symmetrically arranged. The ends of the two first movable plates 13 that are away from each other are respectively fixedly connected with the piston ends of a plurality of first hydraulic cylinders 14, the fixed ends of the first hydraulic cylinders 14 penetrate the inner wall of the first slide groove 11 and extend out of the machine tool 1, the fixed ends of the first hydraulic cylinders 14 are fixedly connected to the machine tool 1, and the plurality of first hydraulic cylinders 14 work synchronously, so that the two first movable plates 13 can be close to or away from each other.

[0043] According to a further optimization scheme, the side clamping assembly 3 includes a plurality of fixed plates 31, the bottom surface of the fixed plate 31 is fixedly connected to the first movable plate 13, the fixed end of the third hydraulic cylinder 33 is fixedly connected inside the fixed plate 31, and the piston end of the third hydraulic cylinder 33 extending out of the top surface of the fixed plate 31 is fixedly connected to a clamping plate 32.

[0044] The piston end of the third hydraulic cylinder 33 drives the clamping plate 32 to rise and fall, so that the clamping plate 32 can clamp the end of the wing plate of the H-beam. At the same time, the fixing plate 31 can effectively clamp the wing plate, that is, the H-beam can be effectively clamped by the clamping plate 32 and the fixing plate 31.

[0045] In a further optimized solution, a plurality of fixing plates 31 are arranged at equal intervals, and a gap is left between two adjacent fixing plates 31 for the second drilling assembly 4 to drill holes in the wing plate of the H-beam. Through the gap, the second drilling assembly 4 can effectively drill holes in the wing plate of the H-beam.

[0046] A further optimized solution is that the second drilling assembly 4 includes a second support plate, and second CNC slides 42 are respectively installed on both sides of the second support plate, and the second CNC slide 42 is slidably connected to a support column 41 on the side away from the second support plate, and a plurality of fixed ends of fourth hydraulic cylinders 44 are fixedly connected to the second support plate, and the piston end of the fourth hydraulic cylinder 44 is fixedly connected to the second drilling spindle box, the second drilling spindle box is arranged toward the fixed plate 31, and the second drilling spindle box and the gap are arranged one-to-one.

[0047] A fourth slide groove 43 is respectively provided on one side opposite to the two support columns 41, and the fourth slide groove 43 is slidably connected to the second CNC slide 42. The second support plate is driven to rise and fall through the second CNC slide 42, and the second support plate drives the fourth hydraulic cylinder 44 to rise and fall, and the fourth hydraulic cylinder 44 drives the second drilling spindle box to rise and fall, so that the second drilling spindle box can drill holes in the wing plate of the H-shaped steel.

[0048] A further optimized solution is that the first drilling assembly 2 includes a top frame 21 arranged above the machine tool 1, and a first support plate is slidably connected in the top frame 21. First CNC slides 22 are respectively installed on both sides of the first support plate. The side of the first CNC slide 22 away from the first support plate is slidably connected to the inner wall of the top frame 21, and a plurality of fixed ends of second hydraulic cylinders 24 are fixedly connected to the first support plate. The piston end of the second hydraulic cylinder 24 is fixedly connected to the first drilling spindle box, and the first drilling spindle box is arranged toward the machine tool 1.

[0049] A third slide groove 23 is provided on the inner wall opposite to the top frame 21, and the third slide groove 23 is slidably connected to the first CNC slide 22. The first CNC slide 22 drives the first support plate to move, the first support rod drives the second hydraulic cylinder 24 to move, and the second hydraulic cylinder 24 drives the first drilling spindle box to move, so that the first drilling spindle box can drill holes in the web of the H-shaped steel.

[0050] The first drilling spindle box has the same structure as the second drilling spindle box. The frequency conversion motor installed on the box body of the drilling spindle box drives the spindle through gear reduction. The selected spindle completes the feeding and drilling operation. This process adopts an automatic travel mechanism, that is, there is no need to set the feed position. The spindle can quickly contact the workpiece and automatically drill holes.

[0051] The drilling spindle boxes are all hydraulically controlled, without the need to manually set the effective length of the drill bit and the thickness of the workpiece being drilled, and can automatically switch between fast forward, working forward, and fast reverse. This conversion is achieved through the combined action of the machine, electricity, and hydraulics, without any idle stroke consumption, convenient operation, and further improved efficiency. The spindle speed of each drilling spindle box is steplessly adjusted by the frequency converter, and the feed speed is steplessly adjusted by the speed regulating valve. It can be quickly adjusted within a wide range according to factors such as the workpiece material and the drilling diameter; each drilling spindle box can be operated independently and can complete the drilling operation at the same time, which greatly improves efficiency.

[0052] In order to cool the drill bit, an aerosol cooling system is also provided. The drilling cooling flexible nozzles of the aerosol cooling system are respectively installed on each drilling spindle box, so that the spray position of the nozzle can be easily adjusted so that it is always on the drill bit surface near the drilling section. The aerosol cooling is achieved by adding air and high-pressure water. The advantages are less coolant consumption, cost saving, environmental protection, and reduced wear of the drill bit.

[0053] Aerosol cooling system is a highly efficient cooling technology widely used in many fields. Aerosol cooling system utilizes the characteristics of gas-liquid two-phase flow to improve cooling efficiency by atomizing liquid and mixing it with gas to form an aerosol mixture. Aerosol cooling system atomizes liquid (usually water) into tiny droplets through a nozzle and mixes it with gas (usually air). This aerosol mixture has a large surface area and can absorb and transfer heat more efficiently.

[0054] The aerosol cooling system will also be combined with ultrasonic atomization technology to further improve the atomization effect and cooling efficiency.

[0055] The first CNC slide 22 and the second CNC slide 42 have the same structure. The CNC slides include a slide, a slide seat and a servo drive system. Each slide is a CNC axis. Each CNC axis is guided by a precision linear rolling guide and driven by an AC servo motor and a ball screw to ensure its positioning accuracy; that is, the CNC slide is guided by a linear guide and the ball screw is driven by a servo motor for CNC positioning to adjust the exact position of drilling.

[0056] CNC slide is an important part of CNC machine tools, which can realize high-precision and high-efficiency automatic processing. It is widely used in mechanical processing, metal processing, woodworking and other fields, and realizes automatic processing of workpieces through program control, which greatly improves processing efficiency and accuracy.

[0057] The working principle of CNC slide is:

[0058] Program writing: Write the processing program according to the processing requirements of the workpiece, including motion instructions, coordinate points, tool information, etc.

[0059] Set the workpiece coordinate origin: Before starting processing, set the workpiece coordinate origin and align the workpiece coordinate origin with the slide coordinate origin.

[0060] Clamping the workpiece: Install the workpiece to be processed on the CNC slide and fix it appropriately.

[0061] Adjust tool position: Adjust tool position and cutting depth according to program requirements.

[0062] Run program: Start the CNC slide running program, and the CNC slide will automatically perform processing operations according to the instructions in the program, the set path and speed.

[0063] In a further optimized solution, one end of the support column 41 is fixedly connected to the machine tool 1, and the other end of the support column 41 is fixedly connected to the top frame 21, so that the top frame 21 can be stably located above the machine tool 1.

[0064] In a further optimized solution, the transmission assembly includes a support platform 5 fixedly connected to the machine tool 1, and fixed blocks 51 are fixedly connected to both sides of one end of the support platform 5 away from the machine tool 1, and a roller 52 is rotatably connected between the two fixed blocks 51. The two rollers 52 enable the H-shaped steel to move stably.

[0065] As a further optimization scheme, an automatic feeding assembly for conveying H-shaped steel is provided on one side of the machine tool 1 , and the automatic feeding assembly is provided corresponding to any roller 52 .

[0066] The automatic feeding assembly uses a CNC trolley for feeding, which is driven by a servo motor through a gear rack after being decelerated by a reducer, and has accurate positioning. The CNC feeding trolley adopts full closed-loop control to ensure the feeding accuracy during long-distance feeding. A photoelectric cross-beam switch is installed at the feeding end of the machine tool 1. When the H-beam is fed in, the reference line of the feeding direction of the H-beam can be quickly found, and positioning can be performed based on this, thereby achieving accurate positioning of the H-beam.

[0067] The CNC trolley feeding system usually consists of the following parts:

[0068] Servo motor: responsible for driving the movement of the trolley. Usually a high-precision servo motor is used to ensure the accuracy of feeding.

[0069] Ball screw: converts the rotational motion of the servo motor into linear motion, pushing the trolley forward or backward. Feed screw: used to push the workpiece to the specified position.

[0070] Guide rails and sliders: support and guide the movement of the feed screw to ensure the linearity of the feed.

[0071] Sensor: detects the position of the trolley and the status of the workpiece, such as whether the workpiece has been delivered.

[0072] The working principle of CNC trolley feeding is:

[0073] CNC system control: The CNC system controls the movement of the car through programming, including forward, backward, stop and other actions.

[0074] Sensor detection: The position of the trolley, the status of the workpiece and other information are detected by sensors and fed back to the CNC system to achieve closed-loop control.

[0075] Automatic feeding: The trolley automatically delivers the workpiece to the specified position according to the instructions of the CNC system, such as feeding H-beam into the machine tool 1.

[0076] In order to detect the position of the web and wing plate of the H-shaped steel, a web height detector and a wing plate width detector are also provided. The web height detector is installed on the first support plate and is used to detect the height of the web to facilitate drilling operations on the web; the wing plate width detection component is installed on the second support plate and is used to detect the width of the wing plate to facilitate drilling operations on the wing plate.

[0077] In order to carry out automated control, a PLC control system is also set up. The PLC control system is an electrical control system used in the field of industrial automation. It uses digital methods to realize the operation control of machines and equipment. The PLC control system is mainly composed of a central processor, input and output modules, power supply and communication interface.

[0078] The PLC control system is electrically connected to an automatic feeding assembly, an aerosol cooling system, a first drilling spindle box, a second drilling spindle box, a first CNC slide 22 , a second CNC slide 42 , a first hydraulic cylinder 14 , a second hydraulic cylinder 24 , a third hydraulic cylinder 33 , and a fourth hydraulic cylinder 44 .

[0079] Working process: the automatic feeding assembly transports the H-shaped steel to the machine tool 1 and places the H-shaped steel between the two side clamping assemblies 3. At this time, the piston ends of all the first hydraulic cylinders 14 extend synchronously, so that the fixing plate 31 clamps the wing plates on both sides of the H-shaped steel. Then, the piston ends of all the third hydraulic cylinders 33 are retracted, so that the clamping plate 32 can clamp the ends of the wing plates of the H-shaped steel. At this time, the H-shaped steel can be effectively fixed on the machine tool 1. Then, according to the required drilling position, the first CNC slide 22 controls the first drilling spindle box to drill the web of the H-shaped steel or the second CNC slide 42 controls the second drilling spindle box to drill the wing plates. The first drilling spindle box and the second drilling spindle box drill holes separately, that is, the first drilling spindle box and the second drilling spindle box do not drill holes at the same time. According to the drilling position, the number of the second hydraulic cylinder 24, the fourth hydraulic cylinder 44 and the first drilling spindle box and the second drilling spindle box working is controlled.

[0080] After the hole on the web is drilled, it is necessary to drill holes at other positions of the hole along the moving direction of the first drilling assembly 2. The first support plate is driven to move by the first CNC slide 22, the first support rod drives the second hydraulic cylinder 24 to move, and the second hydraulic cylinder 24 drives the first drilling spindle box to move, so that the first drilling spindle box can drill holes in the web of the H-shaped steel.

[0081] After the hole on the wing plate is drilled, it is necessary to drill holes at other positions along the moving direction of the second drilling assembly 4. The second CNC slide 42 drives the second support plate to rise and fall, and the second support plate drives the fourth hydraulic cylinder 44 to rise and fall. The fourth hydraulic cylinder 44 drives the second drilling spindle box to rise and fall, so that the second drilling spindle box can drill holes in the wing plate of the H-shaped steel.

[0082] After the drilling is completed, the clamping of the H-beam is released, and then the automatic feeding component pushes the H-beam to move so that the H-beam is in the position for the next drilling hole, and then the H-beam is clamped and drilled; repeating this process can drill holes in the position where the H-beam needs to be drilled without turning over the H-beam.

[0083] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0084] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An automatic drilling tool for H-shaped steel columns, characterized in that: The invention comprises a machine tool (1), wherein second drilling assemblies (4) for drilling holes in the wing plates of H-shaped steel are respectively arranged on both sides of the top surface of the machine tool (1), and a side clamping assembly (3) for clamping the H-shaped steel is symmetrically arranged between the two second drilling assemblies (4), the side clamping assembly (3) is slidably connected to the top surface of the machine tool (1), and transmission assemblies are respectively arranged on both sides of the side clamping assembly (3), and the transmission assemblies are fixedly connected to both sides of the top surface of the machine tool (1), and a first drilling assembly (2) for drilling holes in the web of the H-shaped steel is arranged above the machine tool (1).

2. The automatic drilling tool for H-shaped steel columns according to claim 1 is characterized in that: A first slide groove (11) is provided in the top surface of the machine tool (1), two first movable plates (13) are slidably connected in the first slide groove (11), and one end of the first movable plate (13) extending out of the first slide groove (11) is fixedly connected to the side clamping assembly (3).

3. The automatic drilling tool for H-shaped steel columns according to claim 2 is characterized in that: The two first movable plates (13) are symmetrically arranged.

4. The automatic drilling tool for H-shaped steel columns according to claim 2 is characterized in that: The side clamping assembly (3) comprises a plurality of fixed plates (31), the bottom surface of the fixed plate (31) being fixedly connected to the first movable plate (13), the fixed end of a third hydraulic cylinder (33) being fixedly connected inside the fixed plate (31), and the piston end of the third hydraulic cylinder (33) extending outside the top surface of the fixed plate (31) being fixedly connected to a clamping plate (32).

5. The automatic drilling tool for H-shaped steel columns according to claim 4 is characterized in that: A plurality of the fixing plates (31) are arranged at equal intervals, and a gap is left between two adjacent fixing plates (31) for the second drilling assembly (4) to drill holes in the wing plate of the H-shaped steel.

6. The automatic drilling tool for H-shaped steel columns according to claim 5 is characterized in that: The second drilling assembly (4) comprises a second support plate, second numerical control slides (42) are respectively installed on both sides of the second support plate, a side of the second numerical control slide (42) away from the second support plate is slidably connected to a support column (41), a plurality of fixed ends of fourth hydraulic cylinders (44) are fixedly connected to the second support plate, a piston end of the fourth hydraulic cylinder (44) is fixedly connected to a second drilling spindle box, the second drilling spindle box is arranged toward the fixed plate (31), and the second drilling spindle box is arranged in a one-to-one correspondence with the gap.

7. The automatic drilling tool for H-shaped steel columns according to claim 6 is characterized in that: The first drilling assembly (2) comprises a top frame (21) arranged above the machine tool (1), a first support plate being slidably connected inside the top frame (21), first numerical control slides (22) being respectively installed on both sides of the first support plate, a side of the first numerical control slide (22) away from the first support plate being slidably connected to the inner wall of the top frame (21), a plurality of fixed ends of second hydraulic cylinders (24) being fixedly connected to the first support plate, a piston end of the second hydraulic cylinder (24) being fixedly connected to a first drilling spindle box, and the first drilling spindle box being arranged toward the machine tool (1).

8. The automatic drilling tool for H-shaped steel columns according to claim 7 is characterized in that: One end of the support column (41) is fixedly connected to the machine tool (1), and the other end of the support column (41) is fixedly connected to the top frame (21).

9. The automatic drilling tool for H-shaped steel columns according to claim 1 is characterized in that: The transmission assembly comprises a support platform (5) fixedly connected to the machine tool (1), and fixed blocks (51) are respectively fixedly connected to both sides of one end of the support platform (5) away from the machine tool (1), and a roller (52) is rotatably connected between the two fixed blocks (51).

10. The automatic drilling tool for H-shaped steel columns according to claim 9 is characterized in that: An automatic feeding assembly for conveying H-shaped steel is arranged on one side of the machine tool (1), and the automatic feeding assembly is arranged corresponding to any one of the rollers (52).

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