Cutting machining and hot melting tapping control method and system for honeycomb steel plate

Abstract

The invention relates to the technical field of honeycomb steel plate production, and particularly provides a control method and system for hot melting tapping and cutting machining of a honeycomb steel plate. The method comprises the steps that feeding is conducted, specifically, the honeycomb steel plate is fixed to a workbench; for honeycomb steel plate cutting machining, hot melting drilling point positions are calibrated; the hot melting drill bit is driven to act, and hot melting drilling operation is conducted on the hot melting drilling point positions; a tapping main shaft is driven to act, and tapping operation is conducted on the hot melting drilling point positions where hot melting drilling is completed; after hot-melting drilling and tapping operation of all the hot-melting drilling point positions is completed, a laser cutting head is driven to act, and laser cutting operation on the front face and the back face of the honeycomb steel plate is conducted along a preset cutting path; and blanking. The honeycomb steel plate cutter solves the problems that a honeycomb steel plate cutter in the prior art is low in cutting efficiency and poor in cutter edge quality, and the efficiency is low, the working procedure is complex and additionally-installed nuts are not firm when the nuts are additionally installed on the two sides of a honeycomb steel plate in a pressing rivet mode, and the drilling and tapping efficiency and quality of the honeycomb steel plate can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of honeycomb steel plate production, and more specifically, to a method and system for cutting and hot melt tapping control of honeycomb steel plates. Background Art

[0002] A honeycomb panel is a plate made by firmly bonding two relatively thin face plates on both sides of a relatively thick honeycomb core material, also known as a honeycomb sandwich structure. A honeycomb steel plate is a product with a honeycomb core as the core material and steel plates as the two side face plates. In the modern industrial field, honeycomb steel plates are widely used in industries such as aerospace, automobile manufacturing, and building decoration due to their light weight, high strength, and good heat and sound insulation properties. During the processing of honeycomb steel plates, drilling and tapping are essential key processes, and their processing quality directly affects the subsequent assembly accuracy and service performance of honeycomb steel plates.

[0003] Currently, for the drilling and tapping of honeycomb steel plates, traditional methods usually adopt the mechanical drilling and tapping method with conventional drills and taps. However, the special honeycomb structure of honeycomb steel plates (the face plates and back plates are usually relatively thin) makes it extremely easy to have problems such as insufficient number of effective thread turns and unqualified strength during traditional drilling and tapping, seriously affecting the processing quality and product qualification rate. Therefore, a method of riveting can be used to install nuts with internal threads. This kind of riveting processing method not only has low efficiency and complex processes, but also the installed nuts are not firm and often loosen. Summary of the Invention

[0004] Based on this, in order to improve the drilling and tapping efficiency and quality of honeycomb steel plates, the present invention provides a method and system for cutting and hot melt tapping control of honeycomb steel plates, and the specific technical solutions are as follows:

[0005] A method for cutting and hot melt tapping control of honeycomb steel plates includes the following steps:

[0006] Loading, fixing the honeycomb steel plate on the workbench;

[0007] Calibrating the hot melt drilling points for the honeycomb steel plate;

[0008] Driving the hot melt drill to act and performing hot melt drilling operations on the hot melt drilling points;

[0009] Driving the tapping spindle to act and performing tapping operations on the hot melt drilling points that have completed hot melt drilling;

[0010] After the hot melt drilling and tapping operations at all hot melt drilling points are completed, driving the laser cutting head to act and performing laser cutting operations on the front and back sides of the honeycomb steel plate along a preset cutting path;

[0011] Release the honeycomb steel plate and cut the material.

[0012] The hot melt tapping control method calibrates the hot melt drilling points, drives the hot melt drill bit to operate to perform hot melt drilling on the honeycomb steel plate. Utilizing the characteristics of non-chip machining, rapid drilling, and rapid bushing forming in hot melt drilling, it can quickly complete the drilling operation of the honeycomb steel plate, improve the drilling efficiency, and solve the problems in the prior art such as low cutting efficiency of the tool for the honeycomb steel plate, poor quality of the cutting edge, and the low efficiency, complex process, and insecure nut installation by the riveting method on both sides of the honeycomb steel plate. It can improve the drilling and tapping efficiency and quality of the honeycomb steel plate.

[0013] In addition, the hot melt tapping control method first performs hot melt drilling and tapping on the honeycomb steel plate, then performs laser cutting operations on the front and back sides of the honeycomb steel plate along a preset path, and finally cuts the material. There is no need to go through multiple disassembly-positioning-clamping cycles among the three processes of hot melt drilling, thread tapping, and laser cutting, which can avoid the non-linear accumulation of systematic errors generated by each repeated clamping, improve the cutting accuracy of the honeycomb steel plate, and thus improve the processing quality of the honeycomb steel plate.

[0014] Preferably, the specific method for fixing the honeycomb steel plate on the workbench includes the following steps:

[0015] Drive the jaws installed on the workbench to move, and fix the honeycomb steel plate on the workbench.

[0016] Preferably, the specific method for driving the hot melt drill bit to operate and perform hot melt drilling on the hot melt drilling points includes the following steps:

[0017] Drive the jaws and the honeycomb steel plate to move through the XY-axis movement module installed on the workbench;

[0018] When one of the hot melt drilling points that has not completed hot melt drilling moves to directly below the hot melt drill bit, drive the hot melt drilling spindle to rotate, driving the hot melt drill bit to rotate;

[0019] Drive the hot melt drilling lifting module installed on the workbench to move, carrying the hot melt drilling spindle and the hot melt drill bit to the specified depth to complete the hot melt drilling operation on the hot melt drilling point.

[0020] Preferably, the hot melt tapping control method further includes the following steps:

[0021] Obtain the feed rate of the hot melt drill bit, the material thermal conductivity of the honeycomb steel plate, the measured molten pool temperature, the plate thickness correction factor of the honeycomb steel plate, the temperature fluctuation amount, and the nominal melting temperature;

[0022] Establish the relationship between the hot melt energy and the material flow function based on the feed rate, material thermal conductivity, measured molten pool temperature, plate thickness correction factor, temperature fluctuation amount, and nominal melting temperature, and realize the dynamic adjustment of the drilling parameters.

[0023] Preferably, the specific method of driving the laser cutting head to perform laser cutting operations on the front and back sides of the honeycomb steel plate includes the following steps:

[0024] Drive the upper laser cutting head to operate and cut the upper layer of the honeycomb steel plate;

[0025] Drive the lower laser cutting head to operate and cut the lower layer of the honeycomb steel plate.

[0026] A cutting and hot melt tapping control system for honeycomb steel plates, used to implement the hot melt tapping control method described above, includes:

[0027] A fixing module, installed on the workbench, used to fix the honeycomb steel plate on the workbench and loosen the honeycomb steel plate after the hot melt drilling and tapping at all hot melt drilling points and the cutting operation of the honeycomb steel plate are completed;

[0028] A calibration module, used to calibrate the hot melt drilling points for the honeycomb steel plate;

[0029] A hot melt drill driving module, used to drive the hot melt drill to operate and perform hot melt drilling operations on the hot melt drilling points;

[0030] A tapping driving module, used to drive the tapping spindle to operate and perform tapping operations on the hot melt drilling points that have completed hot melt drilling;

[0031] A laser cutting head, installed on the workbench, used to perform laser cutting operations on the front and back sides of the honeycomb steel plate along a preset cutting path.

[0032] Preferably, the hot melt tapping control system further includes:

[0033] A hot melt drilling lifting module, used to drive the hot melt drilling spindle and the hot melt drill to reach a specified depth and complete the hot melt drilling operation on the hot melt drilling points.

[0034] Preferably, the hot melt tapping control system further includes:

[0035] An XY-axis movement module, installed on the workbench, used to drive the gripper and the honeycomb steel plate to move;

[0036] Among them, the fixing module is a gripper.

[0037] Preferably, the laser cutting head includes:

[0038] Upper laser cutting head for cutting the upper layer of the honeycomb steel plate;

[0039] Lower laser cutting head for cutting the lower layer of the honeycomb steel plate.

[0040] Preferably, the hot melt tapping control system further includes:

[0041] Parameter acquisition module for acquiring the feed rate of the hot melt drill bit, the material thermal conductivity of the honeycomb steel plate, the measured molten pool temperature, the plate thickness correction factor of the honeycomb steel plate, the temperature fluctuation amount, and the nominal melting temperature;

[0042] Function construction module for establishing the functional relationship between the hot melt energy and the material flow according to the feed rate, the material thermal conductivity, the measured molten pool temperature, the plate thickness correction factor, the temperature fluctuation amount, and the nominal melting temperature, and realizing the dynamic adjustment of the drilling parameters. Description of the Drawings

[0043] The present invention can be further understood from the following description in conjunction with the drawings. The components in the drawings are not necessarily drawn to scale, but the emphasis is placed on showing the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0044] Figure 1 is the overall flow schematic diagram of a method for cutting and hot melt tapping control of a honeycomb steel plate in an embodiment of the present invention;

[0045] Figure 2 is the flow schematic diagram of the specific method for performing hot melt drilling operation on the hot melt drilling points in an embodiment of the present invention;

[0046] Figure 3 is the flow schematic diagram of the specific method for performing laser cutting operations on both sides of the honeycomb steel plate in an embodiment of the present invention;

[0047] Figure 4 is the overall structure schematic diagram of a system for cutting and hot melt tapping control of a honeycomb steel plate in an embodiment of the present invention. Detailed Embodiments

[0048] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with its embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and do not limit the protection scope of the present invention.

[0049] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of this invention herein are only for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0051] The "first" and "second" mentioned in this invention do not represent specific quantities and orders, but are only used for name distinction.

[0052] As Figure 1 shown, an embodiment of this invention provides a cutting processing and hot melt tapping control method for honeycomb steel plates, including the following steps:

[0053] S1, loading, fixing the honeycomb steel plate on the workbench.

[0054] The honeycomb steel plate can be loaded manually or by using a robotic arm, placed on the workbench, and then fixed by a corresponding fixing module or fixture.

[0055] Preferably, the specific method of fixing the honeycomb steel plate on the workbench includes the following steps: driving the jaws installed on the workbench to act, and fixing the honeycomb steel plate on the workbench. Specifically, the cylinder can be controlled to act, thereby driving the jaws to act and clamping and fixing the honeycomb steel plate.

[0056] S2, calibrating the hot melt drilling points for the honeycomb steel plate.

[0057] S3, driving the hot melt drill bit to act and performing hot melt drilling operations on the hot melt drilling points.

[0058] Here, the hot melt drilling operations can be performed on the hot melt drilling points by first moving the honeycomb steel plate and then driving the hot melt drill bit to move perpendicular to the honeycomb steel plate; or by first driving the hot melt drill bit to translate, and after the hot melt drill bit moves to one of the hot melt drilling points, then driving the hot melt drill bit to move perpendicular to the honeycomb steel plate to perform the hot melt drilling operations on the hot melt drilling points.

[0059] Preferably, as Figure 2As shown, in step S3, to drive the hot melt drill bit to operate and perform hot melt drilling on the hot melt drilling points, the specific method includes the following steps:

[0060] S31, drive the gripper and the honeycomb steel plate to move through the XY-axis movement module installed on the workbench.

[0061] S32, when one of the hot melt drilling points that has not completed hot melt drilling moves to directly below the hot melt drill bit, drive the hot melt drilling spindle to rotate, driving the hot melt drill bit to rotate.

[0062] S33, drive the hot melt drilling lifting module installed on the workbench to act, carrying the hot melt drilling spindle and the hot melt drill bit to the specified depth to complete the hot melt drilling operation on the hot melt drilling point.

[0063] The specified depth can be set by technicians according to experience and actual production requirements. After completing the hot melt drilling operations on all hot melt drilling points, proceed to the next step S4.

[0064] S4, drive the tapping spindle to operate and perform tapping on the hot melt drilling points that have completed hot melt drilling.

[0065] Here, the tapping operation on the hot melt drilling points that have completed hot melt drilling can be performed by first moving the honeycomb steel plate and then driving the tapping spindle to move perpendicular to the honeycomb steel plate; or by first driving the tapping spindle to translate, and after the tapping spindle moves to one of the hot melt drilling points that have completed hot melt drilling operations, then driving the tapping spindle to move perpendicular to the honeycomb steel plate to perform the tapping operation on the hot melt drilling point.

[0066] S5, after completing the hot melt drilling and tapping operations on all hot melt drilling points, drive the laser cutting head to operate and perform laser cutting operations on the front and back sides of the honeycomb steel plate along a preset path.

[0067] Preferably, as Figure 3 shown, in step S5, the specific method of driving the laser cutting head to operate and perform laser cutting operations on the front and back sides of the honeycomb steel plate along a preset cutting path includes the following steps:

[0068] S51, drive the honeycomb steel plate to move along the preset cutting path through the XY-axis movement module installed on the workbench and pass under the upper laser cutting head, so that the upper laser cutting head completes the cutting of the upper layer of the honeycomb steel plate along the preset cutting path.

[0069] S52, driving the honeycomb steel plate to move along a preset cutting path and pass over the lower laser cutting head through an XY axis moving module installed on the workbench, so that the lower laser cutting head completes cutting of the lower plate of the honeycomb steel plate along the preset cutting path.

[0070] Here, the hot melt tapping control method first performs hot melt drilling and tapping operations on the honeycomb steel plate, and then performs laser cutting operations, and finally cuts the material. The three processes of hot melt drilling, wire tapping and laser cutting do not require multiple disassembly-positioning-clamping cycles, which can avoid the nonlinear accumulation of system errors caused by each repeated clamping, improve the cutting accuracy of the honeycomb steel plate, and then improve the processing quality of the honeycomb steel plate.

[0071] S6, loosen the honeycomb steel plate and cut the material.

[0072] The honeycomb steel plate that has completed the drilling and tapping operations can be unloaded from the workbench by manual unloading or by clamping with a robotic arm.

[0073] The hot melt tapping control method calibrates the hot melt drilling points and drives the hot melt drill bit to perform hot melt drilling operations on the honeycomb steel plate. The characteristics of hot melt drilling, chipless processing, rapid drilling and rapid bushing forming can be used to quickly complete the drilling operation of the honeycomb steel plate, thereby improving the drilling efficiency. The problems of low efficiency, complicated procedures and loose nuts installed by riveting nuts on both sides of the honeycomb steel plate in the prior art are solved, thereby improving the drilling and tapping efficiency and quality of the honeycomb steel plate.

[0074] In one embodiment, the cutting processing and hot melt tapping control method for honeycomb steel plate further includes the following steps:

[0075] Obtain the feed speed of the hot melt drill, the material thermal conductivity of the honeycomb steel plate, the measured molten pool temperature, the thickness correction factor of the honeycomb steel plate, the temperature fluctuation amount and the nominal melting temperature;

[0076] The relationship between the hot melt energy and the material flow function is established according to the feed speed, material thermal conductivity, measured molten pool temperature, plate thickness correction factor, temperature fluctuation and nominal melting temperature. Realize dynamic adjustment of drilling parameters.

[0077] Specifically, E represents the hot melt energy, k represents the thermal conductivity correction coefficient of the material, which is related to the honeycomb structure density of the honeycomb steel plate, V represents the feed speed, T melt represents the measured molten pool temperature, δ represents the plate thickness correction factor, ΔT represents the temperature fluctuation, β represents the time attenuation coefficient, e represents the natural constant, and T nominal represents the nominal melting temperature and n represents the empirical index.

[0078] The thermal conductivity correction coefficient of the material characterizes the thermal conductivity of the honeycomb structure of the honeycomb steel plate, which has a negative correlation with the material porosity. It can be calibrated through the melt flow rate experiment, and the value range is 0.8 - 1.2. The feed rate can be understood as the axial displacement of the hot melt drill per unit time. Its setting needs to be dynamically matched with the melt pool temperature. Too high will cause heat accumulation, and too low will cause material springback. The value range is 0.2 - 5.0 mm / s. The measured melt pool temperature can be obtained through infrared thermal imaging or embedded thermocouples.

[0079] Plate thickness correction factor h represents the plate thickness, with the unit of mm. For example, when the plate thickness is 2 mm, δ = 1.002, and when it is 3 mm, δ = 1.0045. This shows that when the plate thickness increases, δ increases, and the feed rate is compensated.

[0080] The time decay coefficient reflects the time dependence of the heat accumulation effect and can be calibrated through experiments. The typical value is 0.02 - 0.15 s -1 ; The temperature fluctuation = real-time temperature - nominal melting temperature. The nominal melting temperature can be determined based on the phase transition point of the material obtained by DSC differential scanning calorimetry; The empirical exponent is based on the thermal sensitivity of the material, n = 1.2 for carbon steel and n = 1.5 for stainless steel.

[0081] This function innovatively couples the material structure parameter (k), the motion parameter (V), and the thermodynamic parameter (T melt ) to achieve non-linear compensation of temperature fluctuations through the exponential term The denominator term δ·(1 - e -β·t ) reflects the attenuation adjustment of the time cumulative effect on the energy input, which has physical consistency with the time term in the heat conduction equation and can achieve dynamic compensation of the heat input parameters.

[0082] In one of the embodiments, the hot melt tapping control method drills a 2-mm-thick stainless steel honeycomb steel plate with the following initial conditions:

[0083] Honeycomb structure density: 85% (k = 1.05);

[0084]

[0085] Nominal melting temperature T nominal = 600 °C;

[0086] Empirical exponent n = 1.5 (thermal sensitivity of stainless steel).

[0087] According to The process of dynamically adjusting the drilling parameters is as follows:

[0088] 1. Temperature monitoring: The melt pool temperature T melt = 615 °C, ΔT = 15 °C

[0089] The temperature compensation coefficient is increased by 3.9%, and the heat input needs to be reduced to balance the temperature fluctuation.

[0090] 2. Time decay correction: The processing time t = 8 seconds, β = 0.1 s -1 , 1 - e -β·t = 1 - e -0.8 ≈0.551 The denominator term increases, and the hot melt energy needs to be adjusted through the numerator term.

[0091] 3. Parameter adjustment strategy:

[0092] 3.1 Reduce the feed rate: The original feed rate = 3 mm / s → adjusted to 2.5 mm / s (a decrease of 16.7%);

[0093] 3.2 Optimize the thermal conductivity: Due to the high honeycomb density, k = 1.05 does not need to be adjusted.

[0094] 3.3 Real-time verification: After adjustment, the hot melt energy drops by 12%, and the molten pool temperature stabilizes at 605 ± 5 °C, meeting the temperature fluctuation threshold (±5%).

[0095] In one of the embodiments, the hot melt tapping control method drills holes in a 3-mm-thick carbon steel honeycomb steel plate, and the initial conditions are as follows:

[0096] Honeycomb structure density: 70% (k = 0.95);

[0097]

[0098] Nominal melting temperature T nominal = 550 °C;

[0099] Empirical index n = 1.2 (stainless steel thermal sensitivity).

[0100] According to The process of dynamically adjusting the drilling parameters is as follows:

[0101] 1. Temperature monitoring: The molten pool temperature T melt = 530 °C, ΔT = -20 °C

[0102] The temperature compensation coefficient is increased by 4.4%, and the heat input needs to be increased to balance the temperature fluctuation.

[0103] 2. Time decay correction: The processing time t = 12 seconds, β = 0.08 s -1 , 1 - e -β·t = 1 - e -0.96 ≈0.617 The denominator term increases, and the numerator term needs to be adjusted synchronously.

[0104] 3. Parameter adjustment strategy:

[0105] 3.1 Reduce feed speed: original feed speed = 1.5mm / s → adjusted to 1.8mm / s (increase by 20%);

[0106] 3.2 Optimize thermal conductivity: Due to the low honeycomb density, k=0.95 is corrected to 1.02.

[0107] 3.3 Power compensation: heating power increased by 10%;

[0108] 3.4 Experimental verification: Heat affected zone width = 0.18mm (meets the standard), material springback ≤ 0.1mm.

[0109] In summary, the cutting processing and hot melt tapping control system for honeycomb steel plates realizes dynamic adjustment of drilling parameters by establishing a functional relationship between hot melt energy and material flow. Experimental verification shows that it is beneficial to improving the drilling quality of honeycomb steel plates.

[0110] In one embodiment of the present invention, the hot melt tapping control method further includes obtaining the spectrum of the molten pool acoustic emission signal during hot melt drilling, analyzing the spectrum of the molten pool acoustic emission signal using short-time Fourier transform, and extracting the phase change characteristic frequency f. When f>15kHz, the empirical index n increases by 0.1-0.3 (corresponding to the rapid formation stage of austenite), preferably 0.2, and when f<8kHz, n decreases by 0.05-0.15 (corresponding to the martensite transformation stage), preferably 0.10.

[0111] This embodiment breaks through the traditional fixed empirical index mode and creates the first dynamic mapping relationship between the molten pool acoustic emission characteristics and the empirical index n value. Compared with the traditional method of fixed empirical index value, it can improve parameter adaptability, thereby further improving the processing efficiency and quality of hot melt drilling of honeycomb steel plates.

[0112] An embodiment of the present invention further provides a cutting and hot melt tapping control system for honeycomb steel plates, which is used to implement the hot melt tapping control method. Figure 4 As shown, it includes a fixing module, a calibration module, a hot melt drill driving module, a tapping driving module and a laser cutting head.

[0113] The fixing module is installed on the workbench, and is used to fix the honeycomb steel plate on the workbench and loosen the honeycomb steel plate after the hot melt drilling and tapping at all hot melt drilling points and the cutting of the honeycomb steel plate are completed.

[0114] The fixing module is a clamping claw, on which a distance sensor can be installed to sense whether the honeycomb steel plate is placed in place. The clamping claw is driven by a clamping claw cylinder, which can automatically adjust the air pressure according to the weight of the honeycomb steel plate to balance the weight of the honeycomb steel plate.

[0115] The calibration module is used to calibrate the hot melt drilling points for the honeycomb steel plate. Here, a corresponding layout software program for calibrating the hot melt drilling points is set in the calibration module.

[0116] The hot melt drill bit driving module is used to drive the hot melt drill bit to act and perform hot melt drilling operations on the hot melt drilling points; the tapping driving module is used to drive the tapping main shaft to act and perform tapping operations on the hot melt drilling points that have completed hot melt drilling.

[0117] The hot melt tapping control system further includes a hot melt drilling lifting module installed on the workbench. The hot melt drilling lifting module is used to drive the hot melt drilling main shaft and the hot melt drill bit to move in a direction perpendicular to the honeycomb steel plate and reach a specified depth, so as to complete the hot melt drilling operation on the hot melt drilling points.

[0118] Preferably, the hot melt tapping control system further includes an XY-axis moving module. The XY-axis moving module is installed on the workbench and is used to drive the clamping jaw and the honeycomb steel plate to move; the XY-axis moving module is also used to drive the honeycomb steel plate to move along a preset cutting path and pass under the upper laser cutting head, so that the upper laser cutting head completes the cutting of the upper layer plate of the honeycomb steel plate along the preset cutting path, and drive the honeycomb steel plate to move along the preset cutting path and pass above the lower laser cutting head, so that the lower laser cutting head completes the cutting of the lower layer plate of the honeycomb steel plate along the preset cutting path.

[0119] Specifically, the maximum unloaded moving speed of a single axis of the XY-axis moving module is 60 m / min. The rotation speed range of the hot melt drilling main shaft is 2400 - 2800 r / min, and the power is 800 W. It can be a servo motor main shaft with adjustable speed and position. The hot melt drilling beat of the system is about 1.8 s / piece, and the tapping beat is 2.5 - 3.0 s / piece.

[0120] The laser cutting head is installed on the workbench and is used to perform laser cutting operations on the front and back sides of the honeycomb steel plate along a preset path;

[0121] Preferably, the laser cutting head includes an upper laser cutting head and a lower laser cutting head.

[0122] The upper laser cutting head is used to cut the upper layer plate of the honeycomb steel plate; the lower laser cutting head is used to cut the lower layer plate of the honeycomb steel plate. The cutting speed of the upper laser cutting head and the lower laser cutting head is about 8 m / min.

[0123] In this embodiment, the hot melt tapping control system first performs hot melt drilling and tapping operations on the honeycomb steel plate, and then performs laser cutting operations, and finally unloads the material. The three processes of hot melt drilling, wire tapping and laser cutting do not require multiple disassembly-positioning-clamping cycles, which can avoid the nonlinear accumulation of system errors caused by each repeated clamping, improve the cutting accuracy of the honeycomb steel plate, and further improve the processing quality of the honeycomb steel plate.

[0124] The hot melt tapping control system calibrates the hot melt drilling points and drives the hot melt drill bit to perform hot melt drilling operations on the honeycomb steel plate. By utilizing the characteristics of hot melt drilling such as chipless processing, rapid drilling and rapid bushing forming, the drilling operation of the honeycomb steel plate can be completed quickly, thereby improving the drilling efficiency and product quality.

[0125] The hot melt tapping control system also includes a parameter acquisition module and a function construction module.

[0126] The parameter acquisition module is used to obtain the feed speed of the hot melt drill, the material thermal conductivity of the honeycomb steel plate, the measured molten pool temperature, the plate thickness correction factor of the honeycomb steel plate, the temperature fluctuation amount and the nominal melting temperature; the function construction module is used to establish the hot melt energy and material flow function relationship according to the feed speed, material thermal conductivity, measured molten pool temperature, plate thickness correction factor, temperature fluctuation amount and nominal melting temperature. Realize dynamic adjustment of drilling parameters.

[0127] Specifically, E represents the hot melt energy, k represents the thermal conductivity correction coefficient of the material, which is related to the honeycomb structure density of the honeycomb steel plate, V represents the feed speed, T melt represents the measured molten pool temperature, δ represents the plate thickness correction factor, ΔT represents the temperature fluctuation, β represents the time attenuation coefficient, e represents the natural constant, and T nominal represents the nominal melting temperature and n represents the empirical index.

[0128] The functional relationship Innovatively combines material structure parameters (k), motion parameters (V) and thermodynamic parameters (T melt ) is coupled through the exponential term To achieve nonlinear compensation of temperature fluctuation, the denominator δ·(1-e -β·t ) reflects the attenuation regulation of energy input by the time accumulation effect, which is physically consistent with the time term in the heat conduction equation and can realize dynamic compensation of heat input parameters.

[0129] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0130] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A cutting and hot melt tapping control method for honeycomb steel plates, characterized in that, The blanking processing and hot melt tapping control method includes the following steps: Loading, fixing the honeycomb steel plate on the workbench; For the honeycomb steel plate, calibrating the hot melt drilling points; Driving the hot melt drill bit to act, and performing hot melt drilling operations on the hot melt drilling points; Driving the tapping spindle to act, and performing tapping operations on the hot melt drilling points that have completed hot melt drilling; After the hot melt drilling and tapping operations at all hot melt drilling points are completed, driving the laser cutting head to act, and performing laser cutting operations on the front and back sides of the honeycomb steel plate along a preset cutting path; Loosening the honeycomb steel plate and unloading.

2. The cutting and hot melt tapping control method for cellular steel plates as described in claim 1, wherein, The specific method of fixing the honeycomb steel plate on the workbench includes the following steps: Driving the jaws installed on the workbench to act, and fixing the honeycomb steel plate on the workbench.

3. The method for cutting and hot melt tapping control of a honeycomb steel plate according to claim 2, characterized in that, The specific method of driving the hot melt drill bit to act and performing hot melt drilling operations on the hot melt drilling points includes the following steps: Driving the jaws and the honeycomb steel plate to move through the XY-axis movement module installed on the workbench; When one of the hot melt drilling points that have not completed hot melt drilling moves to directly below the hot melt drill bit, driving the hot melt drilling spindle to rotate, driving the hot melt drill bit to rotate; Driving the hot melt drilling lifting module installed on the workbench to act, carrying the hot melt drilling spindle and the hot melt drill bit to reach the specified depth, and completing the hot melt drilling operation on the hot melt drilling point.

4. The cutting and hot melt tapping control method for honeycomb steel plates according to claim 3, wherein The hot melt tapping control method further includes the following steps: Obtaining the feed speed of the hot melt drill bit, the material thermal conductivity of the honeycomb steel plate, the measured molten pool temperature, the plate thickness correction factor of the honeycomb steel plate, the temperature fluctuation amount, and the nominal melting temperature; Establishing the relationship between hot melt energy and material flow function according to the feed speed, material thermal conductivity, measured molten pool temperature, plate thickness correction factor, temperature fluctuation amount, and nominal melting temperature, and realizing the dynamic adjustment of drilling parameters.

5. A method for cutting and hot melt tapping control of honeycomb steel plates according to claim 4, characterized in that, The specific method of driving the laser cutting head to act and performing laser cutting operations on the front and back sides of the honeycomb steel plate includes the following steps: Driving the upper laser cutting head to act, and cutting the upper layer of the honeycomb steel plate; Driving the lower laser cutting head to act, and cutting the lower layer of the honeycomb steel plate.

6. A cutting and hot melt tapping control system for honeycomb steel plates, which is used to implement the cutting and hot melt tapping control method described in any one of claims 1-5, and is characterized in that, The blanking processing and hot melt tapping control system includes: A fixing module, installed on the workbench, for fixing the honeycomb steel plate on the workbench and loosening the honeycomb steel plate after the hot melt drilling, tapping, and blanking operations of the honeycomb steel plate at all hot melt drilling points are completed; A calibration module, for calibrating the hot melt drilling points for the honeycomb steel plate; A hot melt drill bit driving module, for driving the hot melt drill bit to act and performing hot melt drilling operations on the hot melt drilling points; A tapping driving module, for driving the tapping spindle to act and performing tapping operations on the hot melt drilling points that have completed hot melt drilling; A laser cutting head, installed on the workbench, for performing laser cutting operations on the front and back sides of the honeycomb steel plate along a preset cutting path.

7. The cutting and hot melt tapping control system for honeycomb steel plates according to claim 6, wherein The blanking processing and hot melt tapping control system further includes: A hot melt drilling lifting module, for driving the hot melt drilling spindle and the hot melt drill bit to reach the specified depth, and completing the hot melt drilling operation on the hot melt drilling point.

8. A cutting and hot melt tapping control system for honeycomb steel plates as described in claim 7, characterized in that, The blanking processing and hot melt tapping control system further includes: The XY-axis moving module is installed on the workbench and is used to drive the gripper and the honeycomb steel plate to move; Among them, the fixed module is the gripper.

9. The cutting and hot melt tapping control system for honeycomb steel plates according to claim 8, wherein, The laser cutting head includes: The upper laser cutting head is used to cut the upper layer of the honeycomb steel plate; The lower laser cutting head is used to cut the lower layer of the honeycomb steel plate.

10. A cutting and hot melt tapping control system for honeycomb steel plates as described in claim 9, characterized in that, The blanking processing and hot melt tapping control system further includes: The parameter acquisition module is used to acquire the feed speed of the hot melt drill bit, the material thermal conductivity of the honeycomb steel plate, the measured molten pool temperature, the plate thickness correction factor of the honeycomb steel plate, the temperature fluctuation amount, and the nominal melting temperature; The function construction module is used to establish the relationship between the hot melt energy and the material flow function according to the feed speed, the material thermal conductivity, the measured molten pool temperature, the plate thickness correction factor, the temperature fluctuation amount, and the nominal melting temperature, so as to realize the dynamic adjustment of the drilling parameters.

Images