Method and system for optimizing eccentric shaft forging process based on image generation

Abstract

The application discloses a method and system for optimizing eccentric shaft forging process based on image generation, and relates to the technical field of mechanical manufacturing. The method comprises the following steps: establishing a forging forming monitoring mechanism, recording a forming image sequence, and extracting a symmetric section in which an external shape change enters a stable state; identifying a time interval in which the external shape change speed of an eccentric area is reduced but the local area is still changing, performing brightness trajectory analysis on the images in the interval, determining the time at which the brightness change direction reverses, generating a metal fiber running direction change risk marker; adjusting the process rhythm according to the marker to form a delayed shaping time sequence; and implementing segmented rhythm control along the sequence, inserting deformation release with unequal time intervals in the forming process to make the metal flow develop section by section. The application realizes dynamic identification of the stable shape stage but internal deformation, avoids early termination of shaping due to misjudgment, and promotes continuous transition of internal metal flow lines through risk markers and segmented rhythm control, thereby improving forming quality and service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical manufacturing, in particular to an eccentric shaft forging process optimization method and system based on image generation. BACKGROUND

[0002] The eccentric shaft forging process optimization based on image generation refers to, in the eccentric shaft forging production process, collecting or constructing multi-source image information reflecting the blank form, metal flow, deformation area distribution and forming stage characteristics, and generating, reconstructing, synthesizing and fusing the image information to form a forging process image expression result capable of comprehensively expressing the characteristics of different processes, so as to intuitively depict the deformation law of the eccentric shaft and the forming state of the eccentric structure under different forging processes; on this basis, the deformation unevenness, material accumulation, eccentric load concentration and local defect trend presented after image synthesis and fusion are used to make targeted adjustments to the forging sequence, deformation distribution, heating rhythm and forming rhythm, so that the forging process can be optimized around the forming needs of the asymmetric structure of the eccentric shaft, thereby realizing the visual analysis and precise optimization of the forging process at the process level.

[0003] The prior art has the following disadvantages:

[0004] Under the existing technical conditions, in the forging forming process at the final forging stage of the eccentric shaft, the forming result obtained based on image generation mainly reflects the external geometric contour of the forged piece, and when the generated image presents approximately symmetrical external features at this stage, it is easy to make the forging process optimization process misjudge that the current deformation state has reached sufficient balance, so that the key sizing process that should be continued is prematurely ended in the process control; however, in the actual forging process, the metal inside the eccentric structure is still in a complex asymmetric plastic flow state, and the internal metal fiber orientation has not completed continuous transition, and premature termination of sizing will cause the metal fiber flow line in the eccentric position to reverse or even interrupt in a sudden mutation, which type of defect is difficult to identify through appearance image in the forming stage, but under the long-term action of alternating load after the eccentric shaft is put into service, it will quickly evolve into a weak area with high local stress concentration, thereby significantly increasing the risk of instantaneous fatigue fracture of the eccentric shaft during operation.

[0005] The above information disclosed in the background section is only used to strengthen the understanding of the background of the present disclosure, and therefore it can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] The purpose of the present application is to provide an eccentric shaft forging process optimization method and system based on image generation to solve the problems in the background.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a method for optimizing eccentric shaft forging process based on image generation, comprising the following steps:

[0008] A continuous monitoring mechanism for the forming stage of the eccentric shaft forging is established, the shape changes at each forming time are recorded in time sequence as a forming image sequence, and the symmetric section where the shape change enters a stable state is extracted from the forming image sequence to identify the stage where the appearance is stable but the internal deformation has not ended;

[0009] The time comparison is performed on the forming images before and after the symmetric section where the shape change enters a stable state, the time interval where the shape change speed of the eccentric area is reduced but the local morphology is still changing is identified, and the prompt section where the appearance is stable but the internal deformation is still changing is formed;

[0010] The brightness trajectory analysis is performed on the forming images of the eccentric area in the prompt section, the time position where the brightness change direction appears reverse change is determined, the metal fiber direction change risk mark is generated to indicate the internal metal flow mutation risk;

[0011] According to the metal fiber direction change risk mark, the forming section corresponding to the risk mark is adjusted in process rhythm, the eccentric area is kept in controlled deformation in the section and the reshaping time is delayed, and the delayed reshaping time sequence is formed;

[0012] The segmented adjusting forming rhythm control is implemented along the delayed reshaping time sequence, the deformation release process with unequal time intervals is inserted in the continuous forming process, the internal metal flow of the eccentric area is developed segment by segment, the rhythm staggered adjusting path is formed, and the metal fiber mutation risk caused by the shape symmetry is reduced.

[0013] Preferably, the step of establishing a continuous monitoring mechanism for the forming stage of the eccentric shaft forging is as follows:

[0014] The monitoring area of the forming equipment is correspondingly arranged with the forming area of the eccentric shaft blank, the shape change information of the eccentric shaft in the forming process is obtained through a multi-angle imaging device, and a continuous acquisition time reference is established to ensure the time continuity of image recording;

[0015] The continuous forming images are archived in time sequence, the geometric feature parameters of the eccentric part, the main shaft area and the transition zone are extracted for each frame of image, the shape change curve is generated to reflect the evolution process of the shape of the eccentric shaft;

[0016] The symmetry analysis is performed on the time interval where the shape change curve changes gently, the symmetric section where the shape change is stable is determined by comparing the contour differences of adjacent images, and the stage where the appearance is stable but the internal deformation has not ended is identified;

[0017] The symmetrical section with stable appearance change is marked in the forming image sequence, and a corresponding relationship between appearance stability and internal deformation not being completed is established, which is used for key monitoring and data analysis in the subsequent forming process.

[0018] Preferably, in the establishment of the corresponding relationship between appearance stability and internal deformation not being completed, the time information of each frame of forming image is synchronously associated with the eccentric shaft appearance contour information by inserting a time identifier in the forming image sequence, so that the appearance change curve is corresponded with the time sequence, thereby realizing the dynamic matching of the eccentric shaft appearance change and the internal deformation state in the continuous monitoring process, and providing accurate time basis for subsequent risk analysis and shaping rhythm adjustment.

[0019] Preferably, the time comparison of the front and rear forming images of the symmetrical section with stable appearance change is as follows:

[0020] The symmetrical section with stable appearance change is taken as the central interval of time sequence analysis, the forming images corresponding to the adjacent time nodes are selected and arranged, and the view angle and scale of the images are uniformly adjusted to form the continuous appearance change trajectory;

[0021] The contour features of the symmetrical section with stable appearance change and the forming images of the time nodes before and after it in the time sequence are compared, and the time interval in which the eccentric region appearance change speed is reduced but the local morphology is still continuously changing is identified;

[0022] The forming images in the identified time interval are continuously morphologically superimposed to determine the extension direction of the local region morphology change and form the comprehensive judgment of appearance stability and internal change;

[0023] The identified time interval is marked in the forming image sequence, the time boundary of the prompt section is established, and the state record of appearance stability and internal change is formed.

[0024] Preferably, in the marking of the identified time interval in the forming image sequence, the start and end times of the time interval are correspondingly set with the forming process time axis, and the duration of the local morphology change and the eccentric region change trend are recorded, so that the prompt section has a time positioning function in the subsequent forming process, to realize real-time identification and process rhythm adjustment of the appearance stability and internal change stage.

[0025] Preferably, for the prompt section of appearance stability and internal change, the steps of brightness trajectory analysis of the eccentric region forming image in the prompt section are as follows:

[0026] The continuous forming images of the eccentric region in the prompt section are regionally divided and brightness is extracted, and the brightness information of the eccentric part and the transition zone is recorded in time sequence to form a continuous brightness distribution sequence;

[0027] time comparison is made around the luminance change trajectory of the eccentric area in the prompt section, a continuous change trend of the luminance change direction is determined, and a time position at which the luminance direction reverses is captured;

[0028] The time position at which the luminance direction reverses is compared with the corresponding shaped image, a local area with a sharp luminance change is identified, and a time and space correlation is established to determine the shaped section;

[0029] A metal fiber direction change risk marker is generated according to the time position at which the luminance change direction reverses, and the risk marker is embedded in the shaped image sequence to indicate the internal metal flow mutation risk.

[0030] Preferably, in the process of generating the metal fiber direction change risk marker, the time sequence tracking of the luminance change direction is introduced in the continuous shaped image of the prompt section, the duration of the luminance reversal is correspondingly associated with the metal flow trend inside the eccentric area, and the risk marker can reflect the dynamic process of the metal fiber direction adjustment, so as to realize the time sequence-based rhythmized control in the subsequent shaping stage.

[0031] Preferably, according to the metal fiber direction change risk marker, the steps of adjusting the process rhythm of the shaped section corresponding to the risk marker are as follows:

[0032] The time position corresponding to the metal fiber direction change risk marker is matched with the time axis of the shaped image sequence, the specific shaped section where the risk marker is located is determined, and a synchronization relationship between the risk marker and the process time axis is established;

[0033] The process rhythm is re-planned in the shaped section corresponding to the risk marker, the eccentric area is kept deformed under control by prolonging the plastic action time, and the continuous transition of the metal fiber flow is realized;

[0034] The re-planned rhythm arrangement is embedded in the overall shaping process to form a delayed shaping time sequence, and a smooth transition section is set on the time axis to ensure the continuity of the rhythm adjustment;

[0035] The end point of the shaping process is constrained by taking the delayed shaping time sequence as a time control reference, so that the internal metal flow reaches a continuous state before the shaping process is terminated.

[0036] Preferably, the steps of implementing the segmented adjustment of the shaping rhythm control along the delayed shaping time sequence are as follows:

[0037] The delayed shaping time sequence is segmented and divided according to the evolution characteristics of the internal metal flow of the eccentric area, so that each segment corresponds to an independent controlled deformation interval, and the start and end points of the segment maintain a corresponding relationship with the time position of the metal fiber direction change risk marker;

[0038] By introducing deformation release processes with unequal time intervals between the segments of the delayed forming time sequence, the metal flow in the eccentric region can achieve staged stress relief and flow direction adjustment during continuous forming.

[0039] The segmented rhythm of the delayed shaping time series is coordinated in an integrated manner, so that the controlled deformation and deformation release process form a continuous cyclical rhythm structure and achieve a staggered adjustment path in time.

[0040] Using the delayed forming time sequence as the rhythm benchmark for the forging process, the segmented deformation and deformation release processes are carried out alternately, and the end point of the forming process is constrained.

[0041] An image-based eccentric shaft forging process optimization system includes a forming monitoring module, a stable zone identification module, a risk analysis module, a rhythm adjustment module, and a rhythm control module.

[0042] The forming monitoring module establishes a continuous monitoring mechanism for the forming stage of eccentric shaft forging. It records the shape changes at each forming moment in chronological order as a forming image sequence, and extracts the symmetrical segments from the forming image sequence that have entered a stable state of shape change, which are used to identify the stage where the appearance is stable but the internal deformation has not ended.

[0043] The stable region identification module compares the before and after images of symmetrical sections where the shape changes have entered a stable state over time. It identifies the time interval in which the shape change rate of the off-center region decreases but the local shape is still changing, forming a prompt section where the appearance is stable but the interior is still changing.

[0044] The risk analysis module performs brightness trajectory analysis on the eccentric region forming image in the warning section, determines the time position when the brightness change direction reverses, and generates a risk marker for the change in metal fiber orientation to indicate the risk of sudden changes in internal metal flow.

[0045] The rhythm adjustment module adjusts the process rhythm of the forming section corresponding to the risk mark based on the risk mark of the metal fiber direction change, so that the eccentric area maintains controlled deformation in the section and delays the forming time, forming a delayed forming time sequence.

[0046] The rhythm control module implements segmented adjustment of forming rhythm control along the delayed forming time sequence. During the continuous forming process, it inserts deformation release processes with unequal time intervals, so that the metal flow inside the eccentric area unfolds segment by segment, forming an adjustment path with staggered rhythms, reducing the risk of metal fiber abrupt changes caused by shape symmetry.

[0047] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0048] The application realizes dynamic identification of the internal deformation state in the shape stabilization stage by establishing a continuous monitoring mechanism in the eccentric shaft forging forming stage and combining time sequence image analysis, so that the judgment basis of the forging process is changed from the appearance form to the coordinated characteristics of the shape and internal flow. By identifying the prompt section of the stable appearance but the changing interior, the misjudgment in the symmetrical state of the shape can be effectively avoided, the shaping process is continued to the stage where the metal flow continuously transitions, thereby improving the control accuracy of the eccentric shaft forming stage, and ensuring the continuity of the internal structure and the balance of the plastic flow.

[0049] The application introduces the metal fiber trend change risk marker into the process rhythm adjustment and segmented rhythm control, so that the delayed shaping time sequence and the deformation release process forming time dimension are out of rhythm, and the internal metal flow of the eccentric area is gradually developed. The rhythm control mode realizes smooth adjustment of the internal stress and flow direction of the eccentric part, reduces the flow line mutation caused by the early termination or rhythm concentration of shaping, and realizes the continuous transition of the internal metal fiber direction of the eccentric shaft in the forming process, thereby improving the forming quality and service life. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0051] Figure 1 The method flowchart of the eccentric shaft forging process optimization method generated based on images according to the present application;

[0052] Figure 2 The module schematic diagram of the eccentric shaft forging process optimization system based on image generation according to the present application. DETAILED DESCRIPTION

[0053] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these example implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art.

[0054] The present application provides an eccentric shaft forging process optimization method based on image generation as shown in Figure 1 The method comprises the following steps:

[0055] A continuous monitoring mechanism for the forging forming stage of the eccentric shaft is established, and the shape changes at each forming time are recorded in time sequence as a forming image sequence. The symmetric section of the shape change entering the stable state is extracted from the forming image sequence, which is used to identify the forming stage where the appearance is basically stable and the internal deformation has not ended.

[0056] Through the whole process image recording and analysis, the continuous tracking of the shape change of the eccentric shaft in the forging forming stage is realized to identify the forming stage where the shape change enters the stable state and the internal deformation has not ended, thereby providing a basis for subsequent forming rhythm control. The specific steps are as follows:

[0057] Before the forging forming of the eccentric shaft starts, the monitoring area of the forming equipment is arranged corresponding to the forming area of the eccentric shaft blank. The shape change information of the eccentric shaft in the forming process is obtained through a multi-angle imaging device, and a continuous acquisition time reference is established to ensure the time continuity of image recording. The imaging device should cover the entire deformation range of the eccentric shaft, especially the deformation area of the eccentric part, so as to be able to record the shape evolution of the eccentric shaft from the initial forming to the final forging stage during the forging process. The core of the forming monitoring mechanism is to establish a continuous acquisition time reference, so that each forming stamping or plastic deformation can be corresponded to a specific time point and triggered synchronously with the image acquisition signal, thereby ensuring the continuity and traceability of the forming image in time sequence. In this process, each frame of forming image contains the contour information of the current eccentric shaft shape and the time identification of the deformation stage, which is used to build the time sequence image basis required for subsequent analysis.

[0058] After obtaining the continuous forming images, the images are archived in time sequence, and the shape features of each frame of forming image are extracted. At this time, in order to accurately capture the dynamic change of the eccentric shaft shape, the geometric feature parameters of the eccentric part, the main shaft area and the transition zone of the eccentric segment in each frame of image need to be extracted, including the eccentric radius, the contour line curvature and the change trend of the cross-sectional shape. By extracting these geometric feature parameters frame by frame, the shape change curve reflecting the evolution process of the eccentric shaft shape can be generated. With the advancement of the forging process, when the shape change curve changes smoothly in a certain time interval, and the geometric difference between adjacent frames of images is significantly reduced, it can be judged that the shape change in this interval enters the stable state. This stage usually corresponds to the stage where the external shape of the eccentric shaft has basically formed, but the internal metal flow has not been completely and uniformly distributed. Through this process, the corresponding relationship between the shape change and the time sequence is preliminarily established, which provides a basis for subsequent extraction of the section where the shape change enters the stable state.

[0059] After identifying the time interval of the smooth change of the profile change curve, further symmetry analysis can be performed on the continuous forming images in the interval to determine the symmetry section that truly belongs to the profile stable state. Specifically, symmetry analysis can be performed on the time interval in which the profile change curve enters the stable state, the symmetry section in which the profile change enters the stable state is determined by comparing the profile differences of adjacent images, and the stage in which the appearance is stable and the internal deformation is not completed is identified. In this step, the profiles of adjacent images in the time sequence are compared, and the profile differences of the eccentric shaft in the axial and radial directions are analyzed. When the profile presents an approximately symmetrical or stable geometric relationship in multiple directions, it can be determined that the section belongs to the symmetry section in which the profile change enters the stable state. At this time, the change rate of the symmetry section is cross-compared in combination with the profile change curve generated in the previous sub-step to ensure that the change rate is at a low level. Through the above comparison, the appearance stable interval of the eccentric shaft in the forming process can be accurately determined, and the interval is used as a key reference for subsequent stage analysis. At this time, the appearance has entered the stable state, but according to the forming experience and internal metal flow characteristics, it is judged that the internal deformation at this stage is often not completed, so this section needs to be specially identified in order to prolong the shaping duration of the corresponding stage in process control and prevent the forming process from ending too early.

[0060] The identified symmetry section in which the profile change enters the stable state is labeled in the entire forming image sequence, and a corresponding relationship between the appearance stability and the internal deformation not being completed is established to form a complete forming stage identification mechanism. When establishing the corresponding relationship between the appearance stability and the internal deformation not being completed, the time information of each frame of forming image is synchronously associated with the eccentric shaft profile information by inserting a time identifier in the forming image sequence, so that the profile change curve and the time sequence form a corresponding relationship, thereby realizing dynamic matching of the eccentric shaft profile change and the internal deformation state in the continuous monitoring process, so as to focus on monitoring this section in the subsequent forming process. When the eccentric shaft enters this stage, the monitoring mechanism can continuously track the small trend of the profile change so as to capture possible signs of subtle changes while the appearance remains stable, providing data support for subsequent risk analysis and process adjustment. The key to this stage is to form a clear judgment zone of “appearance stable but internal deformation still in progress”, so that the forging process has a clear boundary on the time axis. Through such time-layered monitoring, the whole process recording and accurate stage identification of the eccentric shaft forming process can be realized, providing a basis for preventing the appearance symmetry from covering up the internal deformation.

[0061] The time comparison (i.e. comparison in time sequence) is performed on the forming images before and after the symmetry section in which the profile change enters the stable state, the time interval in which the profile change speed of the eccentric region is reduced but the local morphology is still changing is identified, and the prompt section in which the appearance is stable but the internal deformation is still changing is formed, which is used to reflect the state of the appearance stable covering the internal deformation adjustment;

[0062] By time extension analysis on the symmetrical section of the established continuous forming image sequence where the shape change enters a stable state, a comparison relationship is constructed to reveal the persistent deformation characteristics of internal metal flow under the stable appearance state, thereby forming a prompt section of stable appearance but internal changes. The specific steps are as follows:

[0063] After completing the extraction of the symmetrical section where the shape change enters a stable state, the symmetrical section is taken as the center interval of time sequence analysis, and the forming images corresponding to the adjacent time nodes (for example, multiple adjacent time nodes) before and after the symmetrical section are sorted. Each group of time nodes is arranged in the time sequence of the forging process rhythm, so that the symmetrical section where the shape change enters a stable state is located in the middle position of the sequence. In this way, a continuous shape change trajectory can be formed in the time dimension, which includes both the rapid deformation stage before the shape tends to be stable and the subtle change stage after the shape tends to be stable. On this basis, the perspective and scale of the images are uniformly adjusted to form a continuous shape change trajectory. Specifically, all selected forming images can be uniformly adjusted to the same perspective and scale to ensure the comparability of the images in spatial position. Through this uniform processing, the shape change of the eccentric shaft at different stages of the forming process can be reflected in a continuous form, providing an accurate basis for subsequent comparative analysis.

[0064] The contour features of the symmetrical section where the shape change enters a stable state and the forming images corresponding to the time nodes before and after the symmetrical section in the time sequence are compared, and the shape change trend of the eccentric region is observed to identify the time interval where the shape change speed of the eccentric region decreases but the local morphology still changes continuously. In this process, the shape change of the main shaft area around the eccentric shaft, the eccentric position, and the transition section are compared frame by frame. Through step-by-step comparison in time sequence, it can be found that as the forming stage advances, the overall contour change rate of the eccentric position slows down significantly, while the morphology of the local detail area is still continuously adjusted. For example, at the eccentric end face of the eccentric shaft or the transition area of the eccentric radius, the change amplitude of the shape contour is small, but the local contour line still shows signs of slight deformation. This difference reflects that although the appearance enters a stable state, the internal stress and metal flow are still in a slow adjustment stage. By continuously observing the continuity of the local morphology in the time sequence, the time interval range where the shape change speed significantly decreases but the local morphology still changes continuously can be confirmed.

[0065] After identifying the time interval in which the shape change speed decreases but the local morphology is still changing, the continuous morphology of the shaped image in this time interval is superimposed to determine the extension direction of the local area morphology change and form a comprehensive judgment of stable appearance but internal change. In this process, the adjacent images in the time sequence are continuously superimposed to make the macroscopic stable characteristics and the microscopic local change characteristics of the shape in the same view domain. Through this superimposed observation, it can be found that although the overall contour line has tended to coincide, the subtle contour of the local area still shows fluctuation or offset characteristics. Especially in the area where the eccentric part is stressed, the local morphology will appear a small range of deformation extension or internal shrinkage phenomenon, and the extension corresponds to the slow flow and orientation adjustment of the internal metal fiber. By comparing the local changes at the continuous time nodes in time, a time interval with stable appearance but continuous internal deformation can be determined, and the interval is confirmed as the core time range of the prompt section.

[0066] The identified time interval in which the shape change speed decreases but the local morphology is still changing is marked in the shaped image sequence to establish the time boundary of the prompt section and form a record of the state of stable appearance but internal change. When marking the identified time interval in the shaped image sequence, the start and end times of the time interval can be set corresponding to the forming process time axis, and the duration of the local morphology change and the change trend of the eccentric area can be recorded, so that the prompt section has a time positioning function in the subsequent forming process. Specifically, in order to ensure that the prompt section has a clear recognition meaning in the subsequent process adjustment, the start and end times corresponding to the interval need to be corresponded to the forming process time axis, and a record of the state of stable appearance but internal change is formed. The record includes the start and end times of the shape change trend stable section, the duration of the local morphology change, and the change trend of the eccentric area. In the subsequent forging process, when the shape image of the eccentric shaft enters the prompt section, it can be judged according to the time range that the current forging is in a state of stable appearance but internal deformation. By clearly marking the boundary of the prompt section in the shaped image sequence, the subsequent forming control stage can take delay shaping or rhythm adjustment measures for the section, so as to prevent the shaping process from being terminated too early due to the shape entering the stable state. This step not only realizes the time comparison of shape change, but also establishes a dynamic connection between stable appearance and continuous internal deformation on the time axis, providing a basic reference for precise control of the forging process.

[0067] For the prompt section of stable appearance but internal change, the brightness trajectory analysis is performed on the shaped image of the eccentric area in the prompt section to determine the time position where the brightness change direction appears reverse change, and a metal fiber direction change risk marker is generated to indicate the forming section where the internal metal flow may mutate;

[0068] By tracking the intensity level of the forming image of the eccentric area within the hint section, the implicit trend of the metal in the internal flow and orientation change is revealed in the time dimension, and the forming section where the metal fiber direction may mutate is determined through the reverse feature recognition of the intensity change direction, providing the basis for the dynamic adjustment of the subsequent process rhythm. The specific steps are as follows:

[0069] In the obtained hint section with stable appearance and still changing inside, the continuous forming image of the eccentric area is regionally divided and the intensity is extracted, and the intensity information of the eccentric part and the transition zone is recorded in time sequence to form a continuous intensity distribution sequence. Since the shape change corresponding to the hint section has entered the stable state, the traditional geometric feature change is not enough to reflect the internal plastic flow, therefore, the intensity layer of the eccentric part in the eccentric shaft forming image is subdivided in this step to establish a continuous intensity distribution that can be used to observe the small changes of the metal surface state. Specifically, in the image of the eccentric shaft forming area, the key area including the eccentric part and its transition zone is selected as the analysis range, and the intensity information in this range is recorded in time sequence, so that each frame of image corresponds to the surface intensity distribution state of the eccentric area at a specific time point. In this process, the intensity information of each time node and the time sequence form a one-to-one correspondence, thereby constituting the intensity trajectory basic data reflecting the change of the metal flow state. Through this preparation process, the eccentric area in the hint section is converted into a time sequence that can be continuously analyzed, providing a prerequisite for the subsequent judgment of the intensity change direction.

[0070] After establishing the continuous intensity distribution sequence, the time comparison is carried out around the intensity change trajectory of the eccentric area in the hint section to determine the continuous change trend of the intensity change direction and capture the time position of the reverse change of the intensity direction. This step compares the change trend of the intensity of the eccentric area in each frame of forming image in time to observe its change law with the forging rhythm. In the stable appearance stage, the overall intensity change rate is usually low, but in the part where the eccentric area is stressed, the intensity may still fluctuate slightly, which reflects the coupling relationship between the surface temperature, plastic strain and metal flow adjustment. Through the comparison of the continuous time sequence, it can be found that the intensity gradually changes in a certain direction within a certain time interval, such as from bright to dark or from dark to bright, which usually corresponds to the main direction of metal flow. As the forming process continues, when the internal stress state of the metal is adjusted or the flow direction is reversed locally, the direction of the intensity change will also be reversed, forming a change trend opposite to the previous stage. Through the continuous comparison of the time sequence, the time position where the change direction changes from positive to negative can be accurately captured, and the forming time corresponding to this time position reflects the critical state of the adjustment of the metal fiber flow direction.

[0071] After determining the time position of the reverse change of the brightness change direction, the time position of the reverse change of the brightness change direction is compared with the corresponding forming image to identify the local area with sharp brightness change and establish the correlation between time and space to determine the forming section. Specifically, the forming images of several frames before and after the time point are comprehensively compared to analyze the spatial distribution characteristics of the change of the metal fiber direction. At this time, in combination with the continuous brightness trajectory in the prompt section, the local area with the most sharp brightness change can be identified in the eccentric area, and these areas often correspond to the parts where the internal metal flow direction starts to redistribute. By observing the continuity of the brightness change of these local areas in the time sequence, it can be found that when the brightness direction changes reversely, the originally continuous and extended brightness band distribution will appear slight fracture or offset phenomenon, which represents the mutation trend of the metal fiber direction in the internal plastic flow. By correlating the time position with the spatial position, a time-space composite relationship can be formed in the forming image of the eccentric area, so as to determine the specific forming section, which is the key area where the metal fiber flow direction changes. This process realizes the mapping from the brightness change trajectory to the metal flow trend, and reveals the actual dynamics of the internal fiber direction adjustment under the stable appearance state.

[0072] After determining the time position of the reverse change of the brightness change direction and the corresponding forming section, the risk marker of the metal fiber direction change is generated for the forming section to form the metal fiber direction change risk marker which can be used for the control of the forging process. Specifically, the metal fiber direction change risk marker can be generated according to the time position of the reverse change of the brightness change direction, and the risk marker can be embedded in the sequence of forming images to indicate the mutation risk of the internal metal flow. Moreover, in the process of generating the metal fiber direction change risk marker, the time sequence tracking of the brightness change direction can be introduced in the continuous forming images of the prompt section, the duration of the brightness reverse change is correspondingly associated with the metal flow trend inside the eccentric area, so that the risk marker can reflect the dynamic process of the metal fiber direction adjustment. The risk marker corresponds to a specific time on the time axis one by one, and forms the identification marker with the mutual correlation between time and space with the spatial position in the forming image as the reference. By embedding the risk marker in the sequence of continuous forming images, the time period when the metal flow may mutate can be quickly identified in the subsequent forming process. When the forging process enters the risk interval, the forming rhythm can be adjusted or the shaping time can be prolonged according to the risk marker prompt, so as to ensure the continuity of the internal metal flow and the smooth transition of the fiber orientation in the eccentric part. The generation of the marker not only reflects the time sequence characteristics of the metal flow, but also provides a dynamic reference based on image information for the forging process. Through the establishment of the risk marker, the internal structure change hidden in the appearance stable stage is clearly recorded, so that the monitoring of the forming process is more comprehensive and the process control is more accurate.

[0073] According to the metal fiber direction change risk mark, the process rhythm of the corresponding forming section of the risk mark is adjusted, the eccentric area is kept in controlled deformation in the section, and the shaping time is delayed, and a delayed shaping time sequence is formed to constrain the end point of the forming process;

[0074] The generated metal fiber direction change risk mark is mapped and associated with the time sequence of the forming process, the shaping rhythm is dynamically reconstructed through identification and rhythm extension of the risk section, the eccentric area is kept in a sustained controlled plastic deformation state in the risk mark corresponding section, and a delayed shaping time sequence is formed to constrain the end point of the forming process. The specific steps are as follows:

[0075] After obtaining the metal fiber direction change risk mark, the time position corresponding to the metal fiber direction change risk mark is matched with the time axis of the forming image sequence, the specific forming section where the risk mark is located is determined, and the synchronization relationship between the risk mark and the process time axis is established. Since the risk mark reflects the possibility of mutation of the internal flow direction of the metal, its corresponding time position is usually in the stage of stable appearance but still adjusting the internal metal fiber. At this stage, the appearance profile of the eccentric area has changed smoothly, while the flow direction of the internal metal fiber is still being fine-tuned. If shaping is terminated at this time, it is easy to cause discontinuity or local folding of the flow line. In order to prevent this from happening, this step establishes the synchronization relationship between the risk mark and the process time axis, determines the time range covered by the risk mark, and defines it as the target section for rhythm adjustment. This section becomes the key interval that needs to be delayed in the forging process, providing an accurate time reference for subsequent rhythm extension.

[0076] After the forming section corresponding to the risk mark is determined, the process rhythm of the section is re-planned, the plastic action time is prolonged to keep the eccentric area in controlled deformation and realize the continuous transition of metal fiber flow, so as to realize the controlled shaping extension. This step is based on the time range of the risk mark to adjust the deformation rhythm of the eccentric area. Specifically, in the risk section, instead of ending shaping according to the original process rhythm, the plastic action time is prolonged to keep the metal fiber flow continuously transitioned. In order to ensure controlled deformation during the delay, this step controls the time interval and deformation rate of the forging rhythm to keep the eccentric area in a low-rate stress state within the time corresponding to the risk mark, so as to promote the internal metal flow to continue under the premise of not damaging the appearance stability. When the metal fiber completes the direction transition in the eccentric position, it gradually enters the shaping end stage. Through this delay control method, the internal flow direction mutation problem caused by premature termination of shaping can be effectively avoided in the risk section, thereby ensuring the continuity of the internal metal flow of the eccentric shaft.

[0077] After the re-planning of the risk section rhythm is completed, the re-planned rhythm arrangement is embedded into the overall shaping process to form a delayed shaping time sequence and set a smooth transition section on the time axis to ensure the continuity of the rhythm adjustment. The time sequence is based on the original process time axis, and a new rhythm distribution is formed by extending the shaping duration in the section corresponding to the risk mark. The delayed shaping time sequence not only includes the main delay section corresponding to the risk mark, but also includes the smooth transition section before and after it to ensure the continuity and controllability of the rhythm adjustment. By setting continuous gradual change sections in the delayed shaping time sequence, the natural transition from the regular rhythm to the delay rhythm can be achieved in the forging process, so that the stress release in the eccentric area and the adjustment of the metal flow direction are synchronized. In this process, the time position of the risk mark becomes the core node of the rhythm extension, and the end point of the shaping process will be redefined according to the end of the delay sequence. In this way, after the process rhythm is rearranged, the end of the shaping process is no longer based solely on the shape stability, but on the internal metal flow reaching a continuous state.

[0078] After the delayed shaping time sequence is formed, it is used to constrain the end point of the shaping process, thereby establishing a dynamic correspondence between shape stability and internal flow balance. Specifically, the delayed shaping time sequence can be used as a time control reference to constrain the end point of the shaping process, so that the internal metal flow reaches a continuous state before the shaping process is terminated. In this step, the delayed shaping time sequence is used as a time control reference for the forging rhythm to determine the termination time of the shaping process. When the eccentric shaft enters the terminal section of the delayed shaping time sequence during the shaping process, the system does not immediately terminate the shaping, but continues to maintain the controlled deformation of the eccentric area according to the rhythm extension law of the time sequence, so that the internal metal fibers complete a smooth transition in direction under the continuous plastic action. When the end of the time sequence is reached, it means that the internal metal flow has reached a continuous state and the stress state has reached a balance, at which point the shaping process is terminated, thereby realizing the process termination guided by the internal structure state. Through this delay constraint method, the phenomenon of premature termination hidden by appearance stability can be effectively prevented, and the internal structure of the eccentric area can be fully transitioned in the controlled deformation. This process ultimately forms a rhythm extension closed loop driven by the risk mark, which makes the forging process consistent with the evolution of the internal metal flow in the time dimension, and achieves the purpose of optimizing the shaping stage control.

[0079] The shaping rhythm control is implemented in sections along the delayed shaping time sequence, and the deformation release process with different time intervals is inserted into the continuous shaping process, so that the internal metal flow of the eccentric area is developed in sections, forming a rhythm staggered adjustment path, and reducing the risk of internal metal fiber mutation caused by the appearance of symmetry from the process level;

[0080] By further time structure reconstruction on the formed delayed shaping time sequence, the continuous delayed shaping stage is divided into multiple controlled segmented deformation intervals, and different time interval deformation release stages are rhythmically inserted between these intervals, to realize step-by-step unfolding of metal flow and segmented balance of internal stress, so that the entire eccentric shaft forging process forms a staggered rhythm structure in the time dimension, thereby improving the continuity and orientation consistency of internal metal flow. The specific steps are as follows:

[0081] After forming the delayed shaping time sequence, the time sequence is segmented and divided according to the evolution characteristics of the internal metal flow in the eccentric region, so that each segment corresponds to a relatively independent controlled deformation interval. The principle of division is based on the time sequence characteristics corresponding to the metal fiber trend change risk markers, so that the start and end time points of each segment correspond to the time position of the risk markers. In specific operation, the entire delayed shaping time sequence is divided into several continuous but unequal length time segments, each time segment is used to realize plastic adjustment of a specific stage. In this way, the continuous shaping stage is converted into a series of rhythmic controlled periods, and the stress state, deformation speed and flow direction of the eccentric region in each period are in a stable and controllable dynamic balance state. This segmentation not only makes the shaping process on the time axis more refined, but also provides a clear time limit for the subsequent insertion of the deformation release stage, so that the controlled deformation and release process can realize orderly alternation in time.

[0082] The deformation release process with unequal time intervals is introduced between the segments of the delayed shaping time sequence, so that the metal flow in the eccentric region can obtain phased stress relief and flow adjustment in the continuous forming process. The deformation release process refers to the process of appropriately slowing down the stress intensity and deformation rate of the eccentric region while maintaining the continuity of forming, so that the internal metal fiber flow can be unfolded step by step along the time dimension. In this process, the duration of each deformation release is set according to the stress accumulation degree and flow trend of the previous segment, so that the release stage and the controlled deformation stage form an interlaced distribution rhythm in time. This unequal time interval arrangement can make the eccentric region obtain different degrees of stress relaxation and flow adjustment at different time points, avoiding concentrated strain at a single time node, thereby preventing the internal metal flow line from changing direction or breaking due to stress mutation. Through this process, the delayed shaping time sequence is transformed from a single delay into a dynamic sequence with a segmented rhythm structure, making the metal flow in the eccentric region more balanced, continuous and controllable.

[0083] After the completion of the insertion of the deformation release stage, the segmented rhythm of the entire delayed shaping time sequence is integrated and coordinated, so that the controlled deformation and the deformation release process form a continuous cycle rhythm structure and realize a rhythm staggered adjustment path in time. The coordination process takes the time axis as the main line, smoothly connects the deformation intensity and the release interval of each segment, so that the forging rhythm remains continuous in the macroscopic view, and forms a rhythm staggered adjustment path in the microscopic view. Through this rhythm structure, the metal flow in the eccentric region is no longer in the form of continuous advancement in a single direction, but presents a segmented and rhythmical expansion process in time. Each segment of deformation release corresponds to a slight adjustment of the internal flow direction, so that the metal fiber orientation realizes a natural transition between multiple stress actions and relaxation. Especially in the eccentric position, due to the flow deviation caused by the asymmetric structure, the segmented rhythm control can effectively correct it, and the internal metal flow direction realizes a smooth transition in the time dimension, thereby preventing the local flow direction from reversing due to the appearance of symmetry.

[0084] After the completion of the segmented control of the rhythm stagger, the entire delayed shaping time sequence is taken as the rhythm reference of the forging process, so that the segmented deformation and the deformation release process are alternately performed and the end point of the forming process is constrained. In this stage, the segmented deformation and the deformation release process are alternately performed according to the predetermined rhythm, so that the internal metal flow of the eccentric region in the forming process is expanded segment by segment in the time dimension and gradually tends to be balanced. With the advancement of each segmented rhythm, the stress field and flow field in the eccentric shaft present the transition characteristics from concentration to dispersion and from mutation to gentle in the time sequence. When the last segmented rhythm is completed, the metal fiber direction of the eccentric region reaches a continuous state and the flow is sufficient, at which time the shaping process naturally enters the finishing stage. The end point of the forming is determined according to the end of the delayed shaping time sequence, so as to ensure the synchronization of the stability of the appearance and the internal balance. Through this rhythm staggered adjustment path, the eccentric shaft maintains stable appearance while the internal metal flow is fully developed, the flow continuity is maintained, and the internal stress is released segment by segment, so that the entire forging process realizes the unity of the appearance and the internal flow state from the process level.

[0085] The present application realizes the dynamic identification of the internal deformation state in the appearance stabilization stage by establishing a continuous monitoring mechanism during the forging forming stage of the eccentric shaft and combining time sequence image analysis, so that the judgment basis of the forging process is changed from the appearance form to the coordinated characteristics of the appearance and the internal flow. Through the identification of the prompt segment with stable appearance but changing internal, the misjudgment under the appearance symmetry state can be effectively avoided, so that the shaping process continues to the stage where the metal flow continuous transition is completed, thereby improving the control accuracy of the forming stage of the eccentric shaft and ensuring the continuity of the internal structure and the balance of the plastic flow.

[0086] The present application introduces a metal fiber direction change risk mark into the process rhythm adjustment and segmented rhythm control, so that the delayed shaping time sequence and the unequal interval deformation release process form a rhythm stagger in the time dimension, and the internal metal flow of the eccentric area gradually expands. The rhythm control mode realizes smooth adjustment of the internal stress and flow direction of the eccentric part, reduces the flow line mutation caused by early termination of shaping or concentrated rhythm, realizes continuous transition of the internal metal fiber direction of the eccentric shaft during the forming process, and improves the forming quality and service life.

[0087] The present application provides an eccentric shaft forging process optimization system based on image generation as shown in the figure, which comprises a forming monitoring module, a stable zone identification module, a risk analysis module, a rhythm adjustment module and a rhythm control module. Figure 2

[0088] The forming monitoring module establishes a continuous monitoring mechanism for the eccentric shaft forging forming stage, records the shape change at each forming time in time sequence as a forming image sequence, and extracts the symmetric section where the shape change enters the stable state from the forming image sequence, which is used to identify the stage where the appearance is stable but the internal deformation is not completed.

[0089] The stable zone identification module compares the time of the symmetric section where the shape change enters the stable state before and after the forming image, identifies the time interval where the shape change speed of the eccentric area is reduced but the local morphology is still changing, and forms a prompt section where the appearance is stable but the internal deformation is still changing.

[0090] The risk analysis module analyzes the brightness trajectory of the eccentric area forming image in the prompt section, determines the time position where the brightness change direction appears reverse change, generates a metal fiber direction change risk mark, and is used to indicate the internal metal flow mutation risk.

[0091] The rhythm adjustment module adjusts the process rhythm of the forming section corresponding to the risk mark according to the metal fiber direction change risk mark, so that the eccentric area remains controlled deformation and delays the shaping time in the section, forming a delayed shaping time sequence.

[0092] The rhythm control module implements segmented adjustment of the forming rhythm control along the delayed shaping time sequence, inserts a deformation release process with unequal time intervals in the continuous forming process, makes the internal metal flow of the eccentric area expand segment by segment, forms a rhythm staggered adjustment path, and reduces the metal fiber mutation risk caused by the symmetry of the appearance.

[0093] The eccentric shaft forging process optimization method based on image generation provided by the embodiment of the present application is realized by the above-mentioned eccentric shaft forging process optimization system based on image generation. The specific method and process of the eccentric shaft forging process optimization system based on image generation are described in the above-mentioned embodiment of the eccentric shaft forging process optimization method based on image generation, which will not be repeated here.​

[0094] Certain exemplary embodiments of the present application have been described above by way of illustration, and it is to be understood that various modifications will be apparent to those of ordinary skill in the art, without departing from the spirit and scope of the present application. Accordingly, the above description is to be construed as illustrative only and not as limiting of the scope of the present application.

Claims

1. A method for optimizing a flow of an off-center forging based on image generation, characterized in that, The method comprises the following steps: establishing a continuous monitoring mechanism for the eccentric shaft forging forming stage, recording the shape changes of each forming time in time sequence as a forming image sequence, extracting the symmetric section of the shape change entering the stable state from the forming image sequence; comparing the front and rear forming images of the symmetric section of the shape change entering the stable state in time, identifying the time interval of the eccentric region shape change speed reduction but local morphology still changing, forming the prompt section of the appearance stability but the internal still changing; analyzing the brightness trajectory of the forming image of the eccentric region in the prompt section, determining the time position of the reverse change of the brightness change direction, and generating a metal fiber direction change risk marker; according to the metal fiber direction change risk marker, adjusting the process rhythm of the forming section corresponding to the risk marker, making the eccentric region maintain controlled deformation in the section and delaying the shaping time, and forming a delayed shaping time sequence; implementing segmented adjusting forming rhythm control along the delayed shaping time sequence, inserting deformation release processes with different time intervals in the continuous forming process, making the internal metal flow of the eccentric region develop segment by segment, and forming a rhythm staggered adjusting path.

2. The image-generated off-center axis forging process optimization method of claim 1, wherein, The steps of establishing a continuous monitoring mechanism for the eccentric shaft forging forming stage are as follows: corresponding arrangement of the monitoring area of the forming equipment and the forming area of the eccentric shaft blank, obtaining the shape change information of the eccentric shaft in the forming process through a multi-angle imaging device, and establishing a continuous acquisition time reference to ensure the time continuity of image recording; archiving the continuous forming images in time sequence, extracting the geometric feature parameters of the eccentric part, the main shaft region and the transition zone for each frame of image, generating a shape change curve to reflect the evolution process of the eccentric shaft shape, and symmetry analysis of the shape change curve in the time interval of gentle change, determining the symmetric section of stable shape change by comparing the contour differences of adjacent images, and identifying the stage of stable appearance but internal deformation not ending; annotating the symmetric section of stable shape change in the forming image sequence, and establishing the corresponding relationship between the stable appearance and the internal deformation not ending.

3. The image-generated off-center axis forging process optimization method of claim 2, wherein, When establishing the corresponding relationship between the stable appearance and the internal deformation not ending, by inserting a time identifier in the forming image sequence, the time information of each frame of forming image is synchronously associated with the eccentric shaft contour information, so that the shape change curve and the time sequence form a corresponding relationship, thereby realizing the dynamic matching of the eccentric shaft shape change and the internal deformation state in the continuous monitoring process.

4. The image-generated off-center axis forging process optimization method of claim 2, wherein, The steps of comparing the front and rear forming images of the symmetric section of the shape change entering the stable state in time are as follows: taking the symmetric section of stable shape change as the center interval of time sequence analysis, selecting the forming images corresponding to the adjacent time nodes before and after to arrange, and uniformly adjusting the perspective and proportion of the images to form a continuous shape change trajectory; comparing the contour features of the symmetric section of stable shape change and the forming images of the time nodes before and after in the time sequence, identifying the time interval of the eccentric region shape change speed reduction but local morphology still changing; The identified time interval is marked in the forming image sequence to establish the time boundary of the prompt section and form a state record of stable appearance and internal changes. When marking the identified time interval in the forming image sequence, the start and end times of the time interval are set in correspondence with the forming process time axis, and the duration of local morphological changes and the trend of eccentric region changes are recorded, so that the prompt section has a time positioning function in the subsequent forming process.

5. The image-generated off-center axis forging process optimization method of claim 4, wherein, For the prompt section with stable appearance and internal changes, the steps of brightness trajectory analysis of the eccentric region forming image in the prompt section are as follows:

6. The image-generated off-center axis forging process optimization method of claim 4, wherein, The continuous forming images of the eccentric region in the prompt section are regionally divided and brightness is extracted, and the brightness information of the eccentric part and the transition zone is recorded in time sequence to form a continuous brightness distribution sequence; Time comparison is performed around the brightness change trajectory of the eccentric region in the prompt section to determine the continuous change trend of the brightness change direction and capture the time position of the reverse change of the brightness direction; The time position of the reverse change of the brightness direction is compared with the corresponding forming image to identify the local region with sharp brightness change and establish the correlation between time and space to determine the forming section; According to the reverse change time position of the brightness change direction, a metal fiber direction change risk mark is generated, and the risk mark is embedded in the forming image sequence to indicate the risk of internal metal flow mutation. In the process of generating the metal fiber direction change risk mark, the time sequence tracking of the brightness change direction is introduced in the continuous forming image of the prompt section, the duration of the brightness reverse change is correspondingly associated with the metal flow trend in the eccentric region, and the risk mark can reflect the dynamic process of the metal fiber direction adjustment.

7. The image-generated off-center axis forging process optimization method of claim 6, wherein, According to the metal fiber direction change risk mark, the steps of adjusting the process rhythm of the forming section corresponding to the risk mark are as follows:

8. The image-generated off-center axis forging process optimization method of claim 6, wherein, The time position corresponding to the metal fiber direction change risk mark is matched with the time axis of the forming image sequence to determine the specific forming section where the risk mark is located and establish the synchronization relationship between the risk mark and the process time axis; The process rhythm is re-planned in the forming section corresponding to the risk mark, the eccentric region is kept under controlled deformation by prolonging the plastic action time, and the continuous transition of metal fiber flow is realized; The re-planned rhythm arrangement is embedded in the overall forming process to form a delayed shaping time sequence and set a smooth transition section on the time axis to ensure the continuity of the rhythm adjustment; Taking the delayed shaping time sequence as the time control reference, the end point of the shaping process is constrained, so that the internal metal flow reaches a continuous state before the shaping process is terminated. The steps of segmental adjustment of the forming rhythm control along the delayed shaping time sequence are as follows:

9. The image-generated off-center axis forging process optimization method of claim 8, wherein, The delayed shaping time sequence is segmented according to the evolution characteristics of the internal metal flow of the eccentric region, so that each segment corresponds to an independent controlled deformation interval, and the start and end points of the segment are in corresponding relationship with the time position of the metal fiber direction change risk mark; ​ The deformation release process with unequal time intervals is introduced between the segments of the delayed shaping time sequence, so that the metal flow in the eccentric area obtains phased stress relief and flow adjustment in continuous shaping; The segment rhythm of the delayed shaping time sequence is coordinated, so that the controlled deformation and the deformation release process form a continuous cycle rhythm structure and realize the rhythm staggered adjustment path in time; The delayed shaping time sequence is taken as the rhythm reference of the forging process, so that the segmented deformation and the deformation release process are alternately performed and the end point of the shaping process is constrained.

10. An image-based off-center forging process optimization system for implementing the image-based off-center forging process optimization method of any of claims 1-9, wherein, The system includes a shaping monitoring module, a stable zone identification module, a risk analysis module, a rhythm adjustment module, and a rhythm control module. The shaping monitoring module establishes a continuous monitoring mechanism for the eccentric shaft forging shaping stage, records the shape changes at each shaping time in time sequence as a shaping image sequence, and extracts the symmetric section where the shape changes enter the stable state from the shaping image sequence. The stable zone identification module compares the shaping images before and after the symmetric section where the shape changes enter the stable state, identifies the time interval where the eccentric area shape change speed is reduced but the local morphology is still changing, and forms the prompt section where the appearance is stable but the interior is still changing. The risk analysis module analyzes the brightness trajectory of the eccentric area shaping image in the prompt section, determines the time position where the brightness change direction appears reverse change, and generates the metal fiber direction change risk marker. The rhythm adjustment module adjusts the process rhythm of the shaping section corresponding to the risk marker according to the metal fiber direction change risk marker, so that the eccentric area maintains controlled deformation and delayed shaping time in this section, forming a delayed shaping time sequence. The rhythm control module implements segmented adjustment of the shaping rhythm along the delayed shaping time sequence, inserts the deformation release process with unequal time intervals in the continuous shaping process, so that the internal metal flow of the eccentric area develops segment by segment, forming a rhythm staggered adjustment path.

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