A processing system of a radome forming mold

Abstract

The present application relates to the technical field of welding control, and particularly relates to a processing system of a radar cover forming die, which comprises a temperature tracking module, a first ring gap formed by cooperation of a first die segment and a second die segment at a bottom end, a circle of detachable thermocouple arrays arranged on an outer surface of a male die corresponding to the first ring gap in a circumferential direction, each thermocouple measuring point corresponding to a to-be-welded point, and a space temperature sensor arranged at the center of a bottom plate in a cavity of the male die; an execution module used for welding the to-be-welded ring gap; a control module connected with the temperature tracking module and the execution module, respectively, based on collected data of the temperature tracking module to control and map the welding point; the welded area can complete heat conduction and convection cooling, so as to reduce deformation caused by temperature gradient. Compared with a traditional method of fixed sequence or experience jump welding, the assembly reference can be kept stable in the welding process, and the die thermal deformation caused by temperature concentration can be effectively slowed down.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding control, in particular to a processing system of a radar cover forming die. BACKGROUND

[0002] The mold structure design plays an important role in product production, and the three-dimensional space surface of the radar cover is relatively complex, and the surface quality requirement is high, so the processing forming process is very important. The die has a great influence on the forming quality of the radar cover, and the size of the aircraft radar cover is large, and the size of the forming die is larger. The aircraft radar cover is formed by the way of combining the female die and the male die, in order to ensure convenience, it is generally processed by the way of segmented manufacturing and then connected in turn.

[0003] For example, Chinese patent publication No. CN205130194U discloses a radar cover composite material forming die, which belongs to the field of forming die, comprising a die body, the die body is provided with a working surface matched with the radar cover, the working surface is the outer side surface of the die body, and the working surface is in contact with the inner side surface of the radar cover. The outer side surface of the die body is used as the working surface to manufacture the radar cover. It is formed by welding.

[0004] However, due to the influence of the shape of the radar cover on the curved surface of the radar, if the manufacturing precision has a slight deviation, the effect will be unsatisfactory, and the existing scheme lacks sufficient analysis and heat control for the welding process, which may cause the forming die to be easily deformed slightly due to the welding process, thereby affecting the forming precision of the die. SUMMARY

[0005] Therefore, the present application provides a processing system of a radar cover forming die to solve the technical problem that due to the influence of the shape of the radar cover on the curved surface of the radar, if the manufacturing precision has a slight deviation, the effect will be unsatisfactory, and the existing scheme lacks sufficient analysis and heat control for the welding process, which may cause the forming die to be easily deformed slightly due to the welding process, thereby affecting the forming precision of the die.

[0006] To achieve the above purpose, the present application provides a processing system of a radar cover forming die for welding assembly of a radar cover forming die male die, the radar cover forming die male die is formed by cooperating with multiple die segments, and the processing system of the radar cover forming die comprises a temperature tracking module, an execution module and a control module.

[0007] The temperature tracking module is arranged to: after the first ring gap is formed by cooperation of the first mold section and the second mold section at the bottom end, a circle of detachable thermocouple arrays is arranged on the outer surface of the male mold corresponding to the first ring gap in the circumferential direction, each thermocouple measuring point corresponds to a welding point one by one, and a space temperature sensor is arranged at the center of the bottom plate in the inner cavity of the male mold; the execution module is used to implement welding on the ring gap to be welded; and the control module is connected with the temperature tracking module and the execution module, and is configured to execute the following processes to control the welding point:

[0008] An initial welding point is determined from the welding points of the first ring gap, and welding is started;

[0009] The point temperature collected by each thermocouple and the space temperature collected by the space temperature sensor are obtained, the next welding point is selected based on the point temperature and the space temperature and the heat balance criterion pre-stored in the control module, and the first ring gap is welded one by one;

[0010] After the second ring gap is formed by cooperation of the third mold section and the second mold section, the welding points of the first ring gap are sequentially mapped to the second ring gap according to a preset mapping rule, and the second ring gap is welded;

[0011] The heat balance criterion at least requires that the difference between the point temperature and the space temperature of the selected welding point is less than a first threshold value, and the point temperature of the adjacent welded point is less than a second threshold value, so that the circumferential heat field of the ring gap tends to be balanced.

[0012] As a preferred technical solution of the processing system of the radome forming mold, the heat balance criterion pre-stored in the control module further includes the following priority rules:

[0013] When the difference between the point temperature and the space temperature of the welding point to be welded is not greater than the first threshold value, and the point temperatures of the adjacent welded points on both sides of the welding point to be welded are not higher than the second threshold value, the welding point to be welded is selected as a selectable point;

[0014] In the selectable points, a point with an angular interval of not less than a preset angular interval from the previous welding point is preferentially selected;

[0015] If there are still multiple selectable points, the selectable point with the lowest point temperature is selected;

[0016] If it still cannot be determined, a point on the opposite side in a circumferential symmetrical position with the last welding point is selected, and if the point on the opposite side has been welded, the next welding point is determined by sequentially extending from the point on the opposite side in the clockwise direction.

[0017] As a preferred technical solution of the processing system of the radome forming mold, the heat balance criterion pre-stored in the control module further includes the following priority rules:

[0018] Only the to-be-welded point position in a continuous cooling state, i.e., the point position temperature continuously decreases and the cooling amount is not less than a third threshold value within a continuous sampling period, is selected as the optional point position;

[0019] In the optional point position, the point position with the largest cooling rate is preferentially selected, and the angular interval between the point position and the last welded point position is not less than a preset angular interval;

[0020] When all the to-be-welded point positions do not satisfy the continuous cooling state, the control execution module suspends welding and waits for a preset cooling time slot, and then selects a point position that satisfies the condition;

[0021] When there is still no point position that satisfies the condition after the preset cooling time slot, a point position that is symmetrically located on the opposite side of the last welded point position is selected, and if the point position on the opposite side has been welded, the next welded point position is determined by sequentially extending from the point position on the opposite side in a clockwise direction.

[0022] As a preferred technical solution of the processing system of the radome forming die, the preset mapping rule of the control module includes:

[0023] Equal-angle mapping is performed with respect to the die axis, the welding point position sequence of the first ring joint is projected to the second ring joint in the same angular order, the initial welding point position after mapping is rotated by a fixed offset angle around the axis, the fixed offset angle is equal to half of the average angular interval of adjacent point positions of the first ring joint, if the mapped landing position is located in a reinforcing rib, a fastener or a tool avoidance area, the point position is migrated to the nearest allowed landing position without changing the relative order, and the angular interval of any two adjacent point positions after mapping is not less than the minimum angular interval of the first ring joint.

[0024] As a preferred technical solution of the processing system of the radome forming die, the preset mapping rule of the control module is fine-tuned based on the temperature characteristics in the first ring joint process, and specifically includes:

[0025] The control module determines whether the difference between the point position temperature and the space temperature of each angular section when the thermal equilibrium criterion is executed is less than a first threshold value, and the cooling time required for the point position temperature of each angular section to decrease to a second threshold value, according to the temperature record of the first ring joint, and marks the angular section with a point position temperature and a space temperature difference not less than the first threshold value as a hot spot area;

[0026] When generating the mapping point position sequence of the second ring joint, the initial welding point position is rotated to an angular position at which the first several welding point positions do not fall into the hot spot area;

[0027] The mapping point position sequence falling into the hot spot area is uniformly moved;

[0028] For the angular section with the shortest cooling time in the first ring joint, the corresponding mapping point position sequence is moved forward;

[0029] The center of the angular section is the welding point of the first circumferential seam, and the number of angular sections is the same as the number of welding points of the first circumferential seam.

[0030] As a preferred technical solution for the processing system of the radar dome forming mold, the detachable thermocouple array includes 8 to 24 thermocouples, each thermocouple is fixed to the outer surface of the male mold by a magnetic clamp, and the thermocouples are of type K or type T.

[0031] As a preferred technical solution for the processing system of the radar dome forming mold, the space temperature sensor is an armored thermal resistor, which is fixed to the mounting hole of the base plate through a threaded interface.

[0032] As a preferred technical solution for the processing system of the radar dome forming mold, the angular range of the reinforcing rib, fastener or tooling clearance area is automatically identified by the CAD model pre-stored in the control module.

[0033] As a preferred technical solution for the processing system of the radar dome forming mold, the space temperature sensor is an explosion-proof thermocouple, which is fixed to the base plate by a magnetic clamp.

[0034] As a preferred technical solution for the processing system of radar dome forming mold, the control module is integrated into an industrial computer or PLC controller.

[0035] Compared with existing technologies, the advantages of this invention lie in its step-by-step temperature analysis of the welding process, with point and sequence control dominated by the temperature field as the core. It combines the local temperature of the outer surface thermocouple array with the internal cavity temperature, continuously making decisions about the next point during the welding process, thus actively dispersing heat input circumferentially and between layers. If the heat-affected zone near the weld is repeatedly heated in a short period, it will form uneven thermal stress and shrinkage; conversely, the point selection method of this invention allows the welded area to complete heat conduction and convection cooling, thereby reducing the deformation driving force caused by temperature gradients. Unlike traditional methods of skip welding according to a fixed sequence or experience, this invention uses dynamic point selection based on sensors to keep the assembly reference stable during the welding process.

[0036] In particular, since the installation scenarios of radar domes are not all standard circles, there are many irregular ring-shaped structures. Implementing the technical solution of this invention in such scenarios can effectively avoid further temperature concentration caused by irregular shapes. It can also ensure that the rhythm of ring seam formation can be reproduced for irregular structures. Subsequent layers can inherit and stagger this rhythm, thereby improving the consistency and controllability of the overall assembly.

[0037] Further, the temperature tracking module is configured, and the thermocouples are arranged in one-to-one correspondence on the outer surface of the welding points. The temperature measurement on the outer surface can perceive the temperature change caused by welding in the shortest heat path, and reduce the signal lag caused by the difference in material thermal conductivity in different directions. The sensor is detachable, avoiding repeated wiring and fixing between different modules and different ring seams. It does not damage the surface quality and does not interfere with the relative movement of the welding gun and the tool, and is suitable for reuse in multi-batch assembly. Since each measurement point has a clear spatial correlation with the welding point, the selection decision made by the control module has a clear physical direction, reducing the uncertainty caused by indirect temperature measurement. The spatial temperature sensor arranged at the center of the inner cavity bottom is used as a temperature reference for each measurement point on the outer surface. This position is in the central region of the temperature field of the inner cavity and is affected by the combined effects of heat conduction and convection of each point. It can reflect the slow changes of the overall thermal environment. Taking the spatial temperature as a reference to calculate the difference between each point and the environment can offset the systematic bias caused by environmental temperature drift, preheating stage and equipment heat dissipation difference, improve the comparability across time periods and modules, and make the strategy more portable between different equipment and stations. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 The structure block diagram of the processing system of the radar cover forming die of the embodiment of the present application is shown in the figure.

[0039] Figure 2 The cooperation schematic diagram of the radar cover forming die of the embodiment of the present application is shown in the figure.

[0040] Figure 3 The flowchart of executing the heat balance criterion of the embodiment of the present application is shown in the figure. Figure 1

[0041] Figure 4 The flowchart of executing the heat balance criterion of the embodiment of the present application is shown in the figure. Figure 2

[0042] In the figure: 1, third module; 2, second module; 3, first module; 4, second ring seam; 5, first ring seam. DETAILED DESCRIPTION

[0043] In order to make the purpose and advantages of the present application clearer and more apparent, the present application will be further described below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0044] ​​In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0046] For the convenience of understanding the present application, please refer to Figure 2 As shown in the drawings, the present embodiment illustrates the matching structure of the radome forming die, when assembling the male die of the radome forming die, first, the first die segment 3 and the second die segment 2 are matched to form the first ring gap 5, after welding, the second die segment 2 and the third die segment 1 are matched to form the second ring gap 4, after welding, the top die segment is installed to complete the processing of the male die of the radome forming die, and finally the forming of the radome is completed by the matching of the female die and the male die. It should be understood that the example given in the present embodiment is only the matching structure of the radome forming die of the conventional shape, and there are many special-shaped annular pyramids in the actual scene, and the present application scheme is suitable for this special-shaped type. And most of the male dies are made of relatively thin plates for die segment forming, and the welding thermal deformation problem described in the present application can be clearly detected and found.

[0047] Please refer to Figure 1 Please refer to Figure 3 As shown in the drawings, the present embodiment provides a processing system of a radome forming die, which is used for the welding assembly of the male die of the radome forming die. The processing system of the radome forming die comprises a temperature tracking module, an execution module and a control module. In the present embodiment, the control module is integrated in an industrial computer, and can also be integrated in a PLC controller.

[0048] The temperature tracking module is arranged as follows: after the first ring gap is formed by the cooperation of the first die segment and the second die segment at the bottom end, a circle of detachable thermocouple array is arranged on the outer surface of the male die corresponding to the first ring gap in the circumferential direction, the measuring points of each thermocouple correspond one by one to the welding points, and a space temperature sensor is arranged at the center of the bottom plate in the inner cavity of the male die; the execution module is used to implement welding on the to-be-welded ring gap; the control module is connected with the temperature tracking module and the execution module respectively, and is configured to execute the following processes to control the welding points:

[0049] An initial welding point is determined from the to-be-welded point positions of the first ring seam and welding is started;

[0050] The point position temperature collected by each thermocouple and the space temperature collected by the space temperature sensor are acquired, the next welding point position is selected based on the point position temperature and the space temperature and the thermal balance criterion pre-stored in the control module, the first ring seam is welded one by one after being selected,

[0051] After the second ring seam is assembled by the third mold segment and the second mold segment, the welding point positions of the first ring seam are sequentially mapped to the second ring seam according to a preset mapping rule, and the second ring seam is welded.

[0052] The thermal balance criterion at least requires that the difference between the point position temperature and the space temperature of the selected welding point position is less than a first threshold value, and the point position temperature of the adjacent welded point position is less than a second threshold value, so that the circumferential thermal field of the ring seam tends to be balanced.

[0053] In detail, during the segmented welding assembly process of the radome forming mold, the temperature tracking module composed of the outer surface thermocouple array and the inner cavity space temperature sensor is used in combination with the online point selection strategy of the control module to disperse and control the circumferential heat input of the ring seam, thereby reducing the local heat concentration and assembly stress accumulation caused by welding without changing the existing structure and clamping scheme. After the first ring seam is assembled by the first mold segment and the second mold segment, an initial welding point is selected from the set of un-welded point positions and welding is started. During welding, the control module continuously receives the point position temperature of each thermocouple and the space temperature at the center of the bottom plate, and according to the pre-stored thermal balance criterion, the point position with lower temperature and adjacent to the fully cooled welded area is preferentially selected as the next welding point position. Through the above-mentioned cycle, the actual trajectory of the ring seam circumferential interval skip welding is formed. After the first ring seam is completed, the second ring seam is assembled by the third mold segment and the second mold segment, the control module projects the point positions obtained from the first ring seam to the second ring seam according to the preset mapping rule, and there are more than three mold segments at present, which can project the remaining upper ring seam under the premise that the cross-sectional shape of different heights is similar. In this way, the assembly efficiency can be effectively improved while ensuring the temperature requirement.

[0054] Through the above settings, the thermal field of the ring seam is more uniform, the phase distribution of the heat input is more orderly, and the stability of the assembly reference is higher. The subsequent upper ring seam can inherit the partition rhythm obtained from the lower layer, thereby reducing the risk of heat superposition in the same generatrix direction.

[0055] Exemplarily, in the embodiment, the first difference value is set as 30°C, and the second threshold value is set as 120°C. The threshold values can be obtained by a finite number of calibration tests on test pieces of the same material, the same thickness and the same groove form. In the test, the peak temperature, the interval time and the deformation trend are recorded, a simple linear regression or a segmented regression is used to fit the correlation between the temperature difference and the micro-deformation, and the turning point of the regression curve or the inflection point within the safety margin is taken as the setting of the first threshold value and the second threshold value.

[0056] To further avoid the risk of heat superposition, the embodiment sets switchable following two priority rules for the pre-stored heat balance criterion of the control module.

[0057] Referring to FIG. 1, Figure 4 As shown in FIG. 1, the first priority rule is a selected point rule with clear priority and easy to implement on an industrial controller, including:

[0058] Step S1, when the difference between the point temperature of the to-be-welded point and the space temperature is not greater than the first threshold value, and the point temperatures of the adjacent welded points on both sides of the to-be-welded point are not higher than the second threshold value, the to-be-welded point is selected as a selectable point.

[0059] Step S2, in the selectable points, a point with an angular interval not less than a preset angular interval from the previous welding point is preferentially selected.

[0060] Step S3, if there are still multiple selectable points, a selectable point with the lowest temperature is selected.

[0061] Step S4, if it is still impossible to determine, a point at a circumferential symmetric position opposite to the last welding point is selected, and if the point opposite to the last welding point has been welded, the next welding point is determined by sequentially extending from the point opposite to the last welding point in a clockwise direction.

[0062] In detail, in the above embodiment, the heat input is naturally dispersed to multiple quadrants, and the post-weld shrinkage tends to cancel each other out, so that the selected point process has a clear sequence and certainty. It is ensured that the landing point is allowed only when the candidate point has a small temperature difference with the environment and the adjacent welded area has been sufficiently cooled, which is derived from the basic principle of preventing heat from flowing back to the original area in a short time; the minimum angular interval limits the repeated heating of the welding gun in the vicinity, in line with the spatial expansion law of the heat affected zone; on this basis, the point with a lower temperature is selected to further flatten the circumferential temperature distribution; the symmetry priority makes the shrinkage in the same quadrant tend to be balanced.

[0063] Referring to FIG. 2, ​ As shown in FIG. 2, the second priority rule can avoid repeated heating of the same heat affected zone in a short time window in a scene where the welding rhythm needs to be adapted in real time:

[0064] Step S01, only the to-be-welded point position in a continuous cooling state is selected as an optional point position, and the continuous cooling state is that the temperature of the point position continuously decreases in a continuous sampling period and the cooling amount is not less than a third threshold value (10°C in this embodiment);

[0065] Step S02, in the optional point positions, the point position with the largest cooling rate is preferentially selected, and the angular interval between the point position and the last welded point position is not less than a preset angular interval (45° in this embodiment);

[0066] Step S03, when all to-be-welded point positions do not satisfy the continuous cooling state, the control execution module suspends welding and waits for a preset cooling time interval (1 minute and 30 seconds in this embodiment), and then selects a point position that satisfies the condition;

[0067] Step S04, when there is still no point position that satisfies the condition after the preset cooling time interval, a point position opposite to the last welded point position in a circumferential symmetric position is selected, and if the point position opposite to the last welded point position has been welded, the next welded point position is determined by sequentially extending from the point position opposite to the last welded point position in a clockwise direction.

[0068] It should be understood that the third threshold value, the preset cooling time interval, and the preset angular interval can be set to other values according to actual scenes, and the above purpose is to automatically slow down the pace or switch to a remote quadrant when the thermal field is biased, so as to maintain overall thermal balance. The system only introduces heat input when the heat affected zone has significantly fallen, and the mechanism is to avoid heat accumulation caused by heating again when the heat has not yet moved out. The waiting time interval can make the system actively delay during the heat field peak period, and adapt to the natural heat dissipation process of the material and structure; if there is still no point position that satisfies the condition after waiting, the system jumps to the opposite quadrant, and the principle is to maximize the circumferential distance to break the time correlation of the local temperature peak. This refinement enables the system to maintain the pace when facing external disturbances such as environmental wind speed, tool heat dissipation, or temporary shielding, and embodies the adaptive and robust characteristics.

[0069] To ensure that the temperature change rule of the matched mold shape obtained by the first girth analysis and the obtained welding strategy are fully utilized, the preset mapping rule configured for the control module includes:

[0070] The welding point positions of the first ring seam are projected to the second ring seam in the same angular sequence by equiangular mapping with the mold axis as the reference; the initial welding point positions after mapping are rotated clockwise around the axis by a fixed offset angle, which is equal to half of the average angular interval of adjacent point positions of the first ring seam; if the mapped position is located in a reinforcing rib, a fastener or a tool avoiding area (in some cases, there is no reinforcing rib, fastener or tool avoiding area, so the mapping can be directly skipped, and the angular range of the reinforcing rib, fastener or tool avoiding area is automatically identified by the CAD model pre-stored in the control module), the position is moved to the nearest allowed position without changing the relative sequence; the angular interval of any two adjacent point positions after mapping is not less than the minimum angular interval of the first ring seam. In detail, the welding point positions of the first ring seam are copied to the second ring seam in the same angular sequence by equiangular mapping with the mold axis as the reference, and the starting point is rotated around the axis by a fixed offset angle, so that the first several point positions of the second ring seam avoid the previous heat-affected zone of the first ring seam. The fixed offset angle is half of the average angular interval of adjacent point positions of the first ring seam, so as to ensure the stagger of the upper and lower layers in the angular direction. If the mapped position is located in a reinforcing rib, a fastener or a tool avoiding area, the position is moved to the nearest allowed position without changing the overall sequence. After the mapping is completed, the angular interval of any two adjacent point positions is checked, which is not less than the minimum angular interval of the first ring seam, so as to maintain the consistency of the rhythm.

[0071] In the above embodiment, the second ring seam inherits the rhythm of the first ring seam and realizes overall phase staggering, and the heat input of the upper and lower ring seams does not overlap each other, so that the overall geometry after assembly is more stable. The point positions of the first ring seam are mapped to the second ring seam in the same angular sequence, and a fixed offset angle is applied to the whole, so as to stagger the heat input of the upper and lower layers in the angular direction. The principle is the same. The same circumferential sequence retains the verified rhythm, and the fixed offset makes the starting welding phase of the second layer avoid the hot spot of the first layer, thereby reducing the heat superposition in the same generatrix direction. The avoidance migration of the reinforcing rib, the fastener and the tool ensures the weldability and accessibility of the landing point environment; the minimum angular interval is maintained, so that both layers comply with the same rhythm constraint. The deformation transmission caused by the interlayer thermal coupling is reduced.

[0072] To further optimize the subsequent welding influence, the pre-set mapping rule of the control module is adjusted based on the temperature characteristics in the first ring seam process, specifically including:

[0073] The control module determines whether the difference between the point temperature and the space temperature of each angular section when the heat balance criterion is executed is less than the first threshold value, and the cooling time required for the point temperature of the angular section to drop to the second threshold value, and marks the angular section whose difference between the point temperature and the space temperature is not less than the first threshold value as a hot spot area;

[0074] When generating the mapping point sequence of the second circumferential seam, the initial welding point is rotated to an angular position so that the first few welding points do not fall into the hot spot area.

[0075] The mapping points falling into the hotspot area are uniformly shifted to the next position;

[0076] For the angular segment with the shortest cooling time in the first annular joint, the corresponding mapping points are shifted forward in sequence.

[0077] Among them, the center of the angular section is the welding point of the first circumferential seam, and the number of angular sections is the same as the number of welding points of the first circumferential seam.

[0078] In detail, the purpose of the above settings is to ensure that the heat input of the second circumferential seam complements that of the first circumferential seam in both timing and space. Specifically, it delays the heat input in the heat-sensitive area and advances it in the fast-cooling area, thereby further reducing the probability of localized heat accumulation. When forming the second circumferential seam sequence, analysis of the temperature records of the first circumferential seam is incorporated. Hot spots and fast-cooling areas are first identified, and then the welding initiation phase, local point sequence, and spacing are adjusted accordingly. The thermal behavior already occurring is transformed into a strategy for avoiding and reinforcing the next layer, with fast-cooling areas being prioritized to utilize their superior heat dissipation capacity to absorb new heat input.

[0079] In this embodiment, the detachable thermocouple array comprises 8 to 24 thermocouples, each fixed to the outer surface of the male mold by a magnetic clamp. The thermocouples are either type K or type T. The space temperature sensor is a sheathed resistance temperature detector (RTD), fixed to a pre-set mounting hole on the base plate via a threaded interface; or the space temperature sensor is an explosion-proof thermocouple, fixed to the base plate by a magnetic clamp. This effectively avoids interference from welding during data acquisition.

[0080] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

[0081] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention; various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A processing system of a radome forming mold for a welding assembly of a radome forming mold punch, the radome forming mold punch being formed by fitting a plurality of mold segments, characterized by, The processing system of the radome forming die comprises: a temperature tracking module configured to: after the first ring gap is formed by the cooperation of the first die segment and the second die segment at the bottom end, arrange a circle of detachable thermocouple arrays on the outer surface of the male die corresponding to the first ring gap in the circumferential direction, each thermocouple measuring point corresponding to a welding point, and set a space temperature sensor at the center of the bottom plate in the inner cavity of the male die; an execution module for welding the ring gap to be welded; a control module connected with the temperature tracking module and the execution module, configured to perform the following processes to control the welding point: determine the initial welding point from the welding points of the first ring gap and start welding; acquire the point temperature collected by each thermocouple and the space temperature collected by the space temperature sensor, select the next welding point based on the point temperature and the space temperature and the pre-stored thermal equilibrium criterion of the control module, and sequentially select and complete the welding of the first ring gap; after the second ring gap is formed by the cooperation of the third die segment and the second die segment, sequentially map the welding points of the first ring gap to the second ring gap according to a preset mapping rule and complete the welding of the second ring gap; wherein the thermal equilibrium criterion requires at least that the difference between the point temperature and the space temperature of the selected welding point is less than a first threshold value, and the point temperature of the adjacent welded point is less than a second threshold value, so that the circumferential thermal field of the ring gap tends to be balanced.

2. The processing system of claim 1, wherein, The pre-stored thermal equilibrium criterion of the control module further comprises the following priority rules: when the difference between the point temperature and the space temperature of the welding point is not greater than the first threshold value, and the point temperature of the adjacent welded point on both sides of the welding point is not higher than the second threshold value, the welding point is selected as the optional point; in the optional points, the point with an angular interval not less than a preset angular interval from the previous welding point is preferentially selected; if there are still multiple optional points, the optional point with the lowest point temperature is selected; if it still cannot be determined, the opposite side point in the circumferentially symmetrical position with the last welding point is selected, and if the opposite side point has been welded, the next welding point is determined by sequentially extending from the opposite side point in the clockwise direction.

3. The processing system of claim 1, wherein, The pre-stored thermal equilibrium criterion of the control module further comprises the following priority rules: only the welding point in the continuous cooling state is selected as the optional point, and the continuous cooling state is that the point temperature continuously decreases and the cooling amount is not less than a third threshold value within a continuous sampling period; in the optional points, the point with the maximum cooling rate is preferentially selected, and the angular interval between the point and the last welding point is not less than a preset angular interval; when all the welding points do not meet the continuous cooling state, the control execution module pauses the welding and waits for a preset cooling time slot, and then selects the point that meets the condition; when there is still no point that meets the condition after the preset cooling time slot, the opposite side point in the circumferentially symmetrical position with the last welding point is selected, and if the opposite side point has been welded, the next welding point is determined by sequentially extending from the opposite side point in the clockwise direction.

4. The processing system of claim 1, wherein, The preset mapping rule of the control module comprises: The welding point positions of the first girth joint are projected to the second girth joint in the same angular order after isometric mapping based on the mold axis; the mapped initial welding point positions are rotated by a fixed offset angle, which is equal to half of the average angular distance between adjacent point positions of the first girth joint; if the mapped position falls in a reinforcing rib, a fastener or a tool avoidance area, the position is moved to the nearest allowable position without changing the relative order; the angular distance between any two adjacent point positions after mapping is not less than the minimum angular distance of the first girth joint.

5. The processing system of claim 4, wherein, The preset mapping rule of the control module is fine-tuned based on temperature characteristics in the first girth joint process, and specifically includes: The control module determines whether the difference between the point temperature and the space temperature of each angular section when the heat balance criterion is executed is less than the first threshold value, and the cooling time required for the point temperature of the angular section to drop to the second threshold value according to the temperature record of the first girth joint, and accordingly marks the angular section whose difference between the point temperature and the space temperature is not less than the first threshold value as a hot spot area; When generating the mapping point position sequence of the second girth joint, the initial welding point positions are rotated to angular positions where the first several welding point positions do not fall into the hot spot area; The mapping point position sequence that falls into the hot spot area is uniformly moved backward; The mapping point position sequence of the angular section with the shortest cooling time in the first girth joint is moved forward; The center of the angular section is the welding point position of the first girth joint, and the number of angular sections is the same as the number of welding point positions of the first girth joint.

6. The processing system of claim 1, wherein, The detachable thermocouple array contains 8 to 24 thermocouples, each thermocouple is fixed to the outer surface of the male mold by a magnetic clamp, and the thermocouple type is K-type thermocouple or T-type thermocouple.

7. The processing system of claim 1, wherein, The space temperature sensor is an armored thermal resistance fixed to the mounting hole of the bottom plate through a threaded interface.

8. The processing system of claim 4, wherein, The angular range of the reinforcing rib, fastener or tool avoidance area is automatically identified by the CAD model pre-stored in the control module.

9. The processing system of claim 1, wherein, The space temperature sensor is an explosion-proof thermocouple fixed to the bottom plate by a magnetic clamp.

10. The processing system of claim 1, wherein, The control module is integrated into an industrial computer or a PLC controller.

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