A cutting control method for ceramic fiber composite gasket variable pitch zoning

Abstract

The present application relates to a kind of ceramic fiber composite gasket variable pitch partition cutting control method, comprising: obtaining the cutting profile of the formed ceramic fiber composite gasket, with target cutting edge as reference, according to profile curvature, the cutting profile is divided into more than two cutting sections, and test cutting path is formed in each cutting section, the fiber bridging length between finished product side and waste side and the fiber overhanging length of cut edge are collected in the cutting resistance fluctuation value of test cutting process;When any collection value reaches corresponding preset decision value, corresponding cutting section is determined as drag fiber cutting section, and more than two short cutting units are divided in drag fiber cutting section, fiber breaking pitch is formed, according to the fiber bridging length and fiber involvement direction after the cutting of previous short cutting unit, the fiber breaking pitch and cutting direction of subsequent short cutting unit are adjusted, so that ceramic fiber is segmented and cut off, after short cutting unit cutting, along target cutting edge, cutting is through, improve the neatness and size consistency of cut edge.

Description

Technical Field

[0001] This invention relates to the field of ceramic fiber composite gasket cutting control technology, specifically a cutting control method for ceramic fiber composite gaskets with variable pitch partitioning. Background Technology

[0002] In existing technologies, ceramic fiber liners, ceramic fiber boards, and ceramic fiber blankets are typically formed by combining a large number of chopped or interwoven fibers with binders, expanding materials, and reinforcing components. They are lightweight, high-temperature resistant, compressible, and resilient, and are widely used in automotive exhaust purification devices, thermal insulation and sealing structures, and fire-resistant insulation components. After forming, these materials need to be cut or trimmed according to the drawing outline to obtain structures such as end overlaps, irregular shape avoidance, and finished outer contour edges. Because the fibers are interwoven inside the liner, and there may be continuous fiber entanglement between the finished and waste sides, the fibers are easily dragged, crossed, extended, or partially torn when the cutting tool advances along the predetermined edge, resulting in rough cut edges, dimensional deviations, and unstable sealing during subsequent assembly.

[0003] With the increasing demand for green manufacturing and new energy equipment manufacturing, the processing consistency and material utilization rate of ceramic fiber composite gaskets in scenarios such as thermal management of new energy vehicles, thermal protection of power batteries, thermal insulation and sealing of energy storage equipment, and low-energy-consumption refractory insulation components have also attracted attention. If a lot of burrs, rework, or scrap is generated during the cutting stage, it will not only affect the sealing effect of subsequent assembly, but also increase the load of scrap materials and dust handling, as well as the idle time of equipment, which is not conducive to energy conservation, consumption reduction, and low-carbon production.

[0004] For example, patent document CN108911793B discloses a modified aluminosilicate refractory ceramic fiber and a sealing gasket. The modified aluminosilicate refractory ceramic fiber is made into a wet gasket blank, dried, and then cut into shape for use as a sealing gasket in a motor vehicle exhaust purification device. This illustrates that the manufacturing process of ceramic fiber gaskets typically includes a cutting step after forming. Publication document CN217670282U discloses a ceramic fiber board production device that improves cutting stability through a clamping mechanism and collects dust and debris generated during cutting through a dust collection mechanism. While these solutions can improve the processing conditions of ceramic fiber products from the perspectives of material preparation, clamping stability, or dust collection, they primarily focus on material properties, workpiece fixation, or the processing environment. They do not establish adaptive cutting control to address the fiber dragging problem caused by changes in curvature and fiber entanglement direction during the cutting of pre-formed ceramic fiber composite gaskets with irregular contours.

[0005] Especially when the liner contour has straight sections, small-radius corner sections, end overlap sections, or local concave and convex edges, the stress state and fiber entanglement pattern of each cutting segment are not consistent. If a uniform cutting spacing, uniform advancing direction, or single through-cutting method is still used, the non-fiber-dragging area may be over-processed, while the fiber-dragging area is difficult to cut in time. If the tool path is adjusted solely based on the operator's experience, the judgment is lagging and inconsistent, making it difficult to meet the requirements of batch processing for the edge quality and dimensional stability of the finished product. Therefore, the existing technology still needs a cutting control method that can divide the cutting segments based on the contour curvature, identify the fiber-dragging cutting segments during trial cutting, and adjust the fiber breaking spacing and cutting direction of the short cutting unit according to the fiber bridging length and fiber entanglement direction.

[0006] Therefore, in addition to improving the quality of the cut, the cutting control method also needs to take into account the requirements of green manufacturing. Under the premise of ensuring the stability of the finished product edge, it should reduce repeated cutting, ineffective stroke and over-processing, so as to control material consumption, tool wear and dust removal energy consumption, thereby better adapting to the requirements of mass production and energy-saving production of new energy related thermal insulation and sealing products. Summary of the Invention

[0007] The purpose of this invention is to provide a cutting control method for variable-pitch partitioning of ceramic fiber composite liner, thereby solving some of the drawbacks and shortcomings pointed out in the background art.

[0008] The present invention adopts the following technical solution to solve the above-mentioned technical problems: Obtain the cut contour of the formed ceramic fiber composite liner. Based on the target cutting edge, divide the cut contour into two or more cutting segments according to the contour curvature. Form a trial cutting path in each cutting segment and collect the cutting resistance fluctuation value, the fiber bridging length between the finished product side and the waste side, and the fiber extension length at the cut edge during the trial cutting process. When any collected value during the trial cutting process reaches the corresponding preset judgment value, the corresponding cutting segment is determined as a fiber-driven cutting segment; when each collected value does not reach the corresponding preset judgment value, the corresponding cutting segment is determined as a non-fiber-driven cutting segment, and cutting is performed continuously according to the preset cutting interval. Within the fiber-dragging cutting section, the fiber-dragging cutting section is divided into two or more short-cutting units, so that a fiber breakage spacing is formed between adjacent short-cutting units. The fiber breakage spacing and cutting direction of the next short-cutting unit are adjusted according to the fiber bridging length and fiber traction direction after the previous short-cutting unit is cut, so that the ceramic fiber is cut in segments. After the short-cutting unit is cut, it is cut through along the target cutting edge.

[0009] Furthermore, within the fiber-dragging cutting section, the extension direction of the target cutting edge is used as the cutting advance direction, and the cutting direction of the next short cutting unit is determined according to the fiber entanglement direction of the previous short cutting unit; when the fiber entanglement direction of the previous short cutting unit is consistent with the cutting advance direction, the next short cutting unit adopts reverse cutting to cut off the fiber entanglement between adjacent short cutting units.

[0010] Furthermore, within the fiber-dragging cutting section, when a fiber bridging is detected between the finished product side and the waste side after the short-cutting unit cuts, the cutting endpoint of the next short-cutting unit is shifted to the waste side in a direction perpendicular to the target cutting edge, so that the continuous fiber entanglement position is transferred from the target cutting edge to the waste side.

[0011] Furthermore, after the fiber-dragging cutting section completes the cutting of two or more short-cut units, a bridging detection is performed on the terminal position of the fiber-dragging cutting section; when a fiber bridging that crosses the target cutting edge and connects the finished product side and the waste side is detected, opposing short cuts are formed on both sides of the terminal position, so that the intersection of the opposing short cuts deviates from the target cutting edge.

[0012] Furthermore, when the cutting endpoint of the next stub unit shifts to the waste side, the fiber exit point formed on the finished product side by the fiber entanglement is used as the avoidance reference, so that the cutting endpoint is located at a preset offset position of the fiber exit point toward the waste side, and the intersection of adjacent stub units is deviated from the target cutting edge.

[0013] Furthermore, after the continuous fiber entanglement position is transferred to the waste side, if fiber entanglement is still detected after the next stub unit cuts, the waste side offset of the next stub unit is increased by a preset step value; if no fiber entanglement is detected after the next stub unit cuts, the waste side offset of the next stub unit is decreased by the preset step value.

[0014] Furthermore, after the continuous fiber entanglement position is transferred from the target cutting edge to the waste side, a short-distance supplementary cut is first performed on the transferred continuous fiber entanglement position on the waste side. The cutting length of the short-distance supplementary cut is set according to the length of the continuous fiber entanglement position, and then a subsequent through-cut is performed along the target cutting edge.

[0015] Furthermore, when there is a fiber bridging at the terminal position, the offset side of the fiber bridging is first determined based on the target cutting edge; if the fiber bridging is biased towards the finished product side, the opposing short cuts near the finished product side are executed before the opposing short cuts near the waste side, and the endpoint of the opposing short cuts near the finished product side is deviated from the target cutting edge.

[0016] Furthermore, the intersection position of the opposing short cuts is determined according to the bridging length of the fiber bridging; when the bridging length reaches a preset length threshold, the intersection position shifts towards the waste side, and the overlap length between the opposing short cuts on both sides is increased according to a preset overlap adjustment value.

[0017] Furthermore, when the bridging length reaches a preset length threshold and the fiber bridging is biased towards the waste side relative to the target cutting edge, a short cut is first performed near the waste side to form a traction weakening opening, and then a short cut is performed near the finished product side, so that the fiber bridging breaks towards the waste side at the intersection.

[0018] This invention first obtains the cut contour of the pre-formed ceramic fiber composite liner, and then divides it into two or more cutting segments according to the curvature of the contour, based on the target cutting edge. This allows contour areas with different curvatures and different stress states to be identified and processed separately. At the same time, a trial cutting path is formed in each cutting segment, and the cutting resistance fluctuation value, the fiber bridging length between the finished product side and the waste side, and the fiber extension length at the cut edge are collected. This allows for the determination of the fiber dragging cutting segment and the non-fiber dragging cutting segment based on the actual cutting state, avoiding the problems of miscutting, dragging, or edge roughness caused by continuous cutting of the entire contour at a single interval.

[0019] This invention further divides the fiber-dragging cutting section into two or more short-cutting units, creating a fiber breakage spacing between adjacent short-cutting units. The fiber breakage spacing and cutting direction of the subsequent short-cutting unit are adjusted based on the fiber bridging length and fiber entanglement direction after the previous short-cutting unit. This allows the continuous fibers to be segmented, weakened, and cut, reducing the entanglement transfer between the finished product side and the waste side. After completing the short-cutting unit cutting, a continuous cut is made along the target cutting edge, which helps improve the neatness and dimensional consistency of the cut edge, reduces the pulling of waste-side fibers on the finished product edge, and improves the stability and finished product qualification rate of the irregular contour cutting of ceramic fiber composite gaskets. Attached Figure Description

[0020] Figure 1 This is a flowchart illustrating the variable-pitch zoned cutting control process for the ceramic fiber composite liner of the present invention.

[0021] Figure 2 This is a risk assessment diagram for the trial cutting of the fiber optic cutting section in Embodiment 1 of the present invention.

[0022] Figure 3 This is a diagram showing the reverse cutting of the short-cut unit and the control of the fiber breakage spacing in Embodiment 1 of the present invention.

[0023] Figure 4 This is a diagram of the waste side offset and short-distance cutting path in Embodiment 1 of the present invention.

[0024] Figure 5This is a diagram showing the terminal fiber bridging detection and offset side determination in Embodiment 2 of the present invention.

[0025] Figure 6 This is a diagram showing the adjustment of the intersection position offset and overlap length in Embodiment 2 of the present invention.

[0026] Figure 7 This is a diagram showing the sequence of opposite short cuts and the control of traction weakening in Embodiment 2 of the present invention. Detailed Implementation

[0027] As attached Figure 1 As shown, in one specific embodiment, the pre-formed ceramic fiber composite liner is first positioned, and the outline to be cut is obtained through visual recognition, contour scanning, or preset processing data. The position in the outline to be cut that will form the outer edge of the final product is determined as the target cutting edge. Then, using the target cutting edge as the cutting reference, the outline to be cut is divided into two or more cutting segments according to the curvature changes at different positions. The division of cutting segments can be based on straight segments, gentle arc segments, sharp bend segments, concave corner segments, or positions where the contour direction changes significantly, so that the cutting direction and material stress state within the same cutting segment are relatively consistent. For each cutting segment, a corresponding trial cutting path is first formed. The trial cutting path can be set on the scrap side near the target cutting edge or at a position that does not affect the quality of the finished product edge, and it covers the area in the cutting segment that easily reflects changes in cutting resistance and fiber entanglement. During the trial cutting, the cutting resistance fluctuation value, the fiber bridging length between the finished product side and the scrap side, and the fiber extension length at the cut edge are collected. The cutting resistance fluctuation value can be obtained from the load change of the cutting drive mechanism, and the fiber bridging length and fiber extension length can be obtained through image detection device, distance measuring device or manual detection data.

[0028] In the above segmentation process, the requirements of green manufacturing and energy conservation can also be used as auxiliary constraints for cutting path optimization. Specifically, for cutting segments with low non-fiber dragging risk, continuous cutting is maintained at a preset cutting interval. For cutting segments with high fiber dragging risk, short cutting, reverse cutting, or waste side offset processing is performed to avoid using high-density, multi-time cutting paths for the entire contour, thereby reducing the number of reciprocating motions and invalid running time at the cutting execution end.

[0029] After completing the trial cut data collection, the collected cutting resistance fluctuation value, fiber bridging length, and fiber extension length are compared with the corresponding preset judgment values. The preset judgment values ​​can be pre-set based on historical cutting data of ceramic fiber composite liners of the same material, sample trial cut results, or finished product edge quality requirements, and correspond to three types of detection items: cutting resistance fluctuation, fiber bridging, and fiber extension. When any collected value during the trial cut reaches the corresponding preset judgment value, it indicates that the cutting segment is prone to fiber traction, bridging, or extension during the cutting process; therefore, this cutting segment is identified as a fiber-dragging cutting segment. When none of the collected values ​​reach the corresponding preset judgment value, it indicates that the fiber traction risk of this cutting segment is low; therefore, this cutting segment is identified as a non-fiber-dragging cutting segment, and continuous cutting is performed on this segment according to the preset cutting interval. The preset cutting interval can be pre-set based on the cutting tool width, liner thickness, fiber density, and target edge quality requirements, ensuring that adjacent cutting positions continuously cover the non-fiber-dragging cutting segment.

[0030] For areas identified as fiber-dragging cutting segments, instead of performing a complete through-cut, the segment is first divided into two or more short-cutting units, creating fiber breakage gaps between adjacent units. The length and fiber breakage gap of each short-cutting unit can be pre-set based on the extension length, curvature, ceramic fiber arrangement direction, and cutting width of the cutting end of the fiber-dragging cutting segment. This allows multiple short-cutting units to sequentially cover the area to be processed along the segment, with the fiber breakage gap located in the non-finished product area or waste area near the target cutting edge. After each short-cutting unit is completed, the fiber bridging length and fiber entanglement direction near that unit are detected, and the fiber breakage gap and cutting direction of the next short-cutting unit are adjusted based on the detection results. The fiber entanglement direction can be determined by identifying the extension direction of residual fibers crossing the cut, the outward extension direction of fiber ends, or the direction of pull on the waste side. This segmented short-cutting method ensures that the ceramic fibers are cut segment by segment within the fiber-dragging cutting segment, reducing the possibility of continuous fibers being pulled out along the target cutting edge. After the short cutting unit is completed, a through cut is then made along the target cutting edge to form a more stable target cutting edge.

[0031] Based on the above specific implementation, for the area identified as the fiber-dragging cutting segment, the extension direction of the target cutting edge can be set as the cutting advance direction. The cutting advance direction is used to determine the arrangement direction and cutting sequence of the short-cutting units within the fiber-dragging cutting segment. After completing the cutting of the previous short-cutting unit, the entanglement direction of the residual fibers at the previous short-cutting unit is detected and compared with the cutting advance direction. When the fiber entanglement direction is consistent with the cutting advance direction, it indicates that the residual fibers are easily further pulled by the continued advancement of the subsequent short-cutting unit, which may form a continuous entanglement between adjacent short-cutting units. When the fiber entanglement direction is inconsistent with the cutting advance direction, the original cutting direction can be maintained for the subsequent short-cutting unit cutting, or only the fiber breakage spacing of the subsequent short-cutting unit can be adjusted to maintain the fiber breakage effect between adjacent short-cutting units.

[0032] To avoid the aforementioned continuous entanglement, a reverse cutting method is adopted during the subsequent stubbed unit cutting, which is opposite to the cutting advance direction. In this case, the cutting tool or cutting execution end enters the subsequent stubbed unit from the end furthest from the previous stubbed unit and moves towards the previous stubbed unit, so that the cutting force is opposite to or intersects with the fiber entanglement direction at the previous stubbed unit. During reverse cutting, the entry position of the cutting tool or cutting execution end can be set in the non-finished product area on the waste side or outside the target cutting edge, and the pulling effect on the finished product edge is reduced when approaching the previous stubbed unit. This reverse cutting method creates a fiber-breaking effect between adjacent stubbed units, cutting off the fiber entanglement that originally extended along the cutting advance direction, thereby reducing the degree of continuous fiber stretching within the fiber-dragging cutting section and improving the neatness of the target cutting edge during subsequent through-cutting.

[0033] Based on the above specific implementation method, after completing the cutting of any short-cut unit within the fiber-dragging cutting section, the finished product side and waste side near the short-cut unit are inspected. When fiber bridging is detected between the finished product side and the waste side, it indicates that the ceramic fiber at that location has not been completely broken at the target cutting edge, and continuous fibers may be entangled along the target cutting edge. In this case, when performing the cutting of the next short-cut unit, the cutting endpoint of the next short-cut unit is no longer made to fall directly on the target cutting edge, but rather the cutting endpoint of the next short-cut unit is shifted to the waste side in a direction perpendicular to the target cutting edge. The waste side offset amount can be preset or adjusted sequentially according to the degree of fiber bridging, the fiber exit point position, and the allowable trimming range of the finished product edge, so that the cutting endpoint can avoid the edge of the finished product side. Through this offset method, the position of continuous fiber entanglement is transferred from the target cutting edge to the waste side, thereby reducing the pulling effect of continuous fibers on the edge of the finished product side.

[0034] When determining the cutting endpoint of the next chopped unit, the fiber exit point formed on the finished product side can be used as an avoidance reference. Based on the position of this exit point, the cutting endpoint is set at a preset offset position facing the waste side, so that the intersection of the chopped units does not directly pass through the target cutting edge. This avoids secondary fiber pulling or edge gaps on the finished product side during intersection cutting and guides the fiber entanglement to the waste area. After the continuous fiber entanglement position is transferred to the waste side, the cutting result of the next chopped unit continues to be monitored. If fiber entanglement is still detected after the next chopped unit cuts, the waste side offset of the next chopped unit is increased by a preset step value, so that the subsequent cutting endpoint is further away from the target cutting edge. If no fiber entanglement is detected after the next chopped unit cuts, the waste side offset of the next chopped unit is decreased by the preset step value, so that the cutting path gradually approaches the target cutting edge. The preset step value can be preset according to the positioning accuracy of the cutting equipment, the padding thickness, the waste side allowance, and the allowable deviation of the target edge. This ensures the fiber breaking effect while preventing the cutting path from deviating from the target cutting edge for a long time.

[0035] After the continuous fiber entanglement position has been transferred from the target cutting edge to the waste side, a short-distance supplementary cut can be performed on the waste side at the transferred continuous fiber entanglement position. The cutting length of the short-distance supplementary cut is set according to the length of the continuous fiber entanglement position, so that the remaining entangled fibers on the waste side are cut off. The start and end points of the short-distance supplementary cut can both be set in the waste side area, and a clearance interval is maintained between the short-distance supplementary cut path and the target cutting edge to avoid the supplementary cut process from pulling the edge of the finished product side again. After completing the short-distance supplementary cut, subsequent through-cutting is performed along the target cutting edge. Since the continuous fiber entanglement has been pre-transferred and cut on the waste side, the fiber tension on the target cutting edge during subsequent through-cutting is reduced, thereby improving the integrity and stability of the ceramic fiber composite gasket cutting edge.

[0036] Based on the above specific implementation method, after the fiber-dragging cutting section completes the cutting of two or more short-cut units, bridging detection is performed on the terminal position of the fiber-dragging cutting section. This terminal position can be the connection point between the fiber-dragging cutting section and an adjacent cutting section, or it can be a position where continuous fibers are likely to remain after the short-cut units are finished. Bridging detection can be performed using an image detection device, a contour detection device, or cutting resistance feedback data. The image detection device can identify continuous fiber images crossing the target cutting edge, the contour detection device can identify unseparated local connection areas on both sides of the cut, and the cutting resistance feedback data can reflect the load changes when fiber entanglement still exists at the terminal position. When a fiber bridging is detected that crosses the target cutting edge and connects the finished product side and the waste side, it indicates that the fiber at the terminal position has not been completely broken at the target cutting edge. At this time, opposing short cuts are formed on both sides of the terminal position, causing the short-cut paths on both sides to extend towards each other, and the intersection of the opposing short cuts is deviated from the target cutting edge. By setting the intersection position away from the target cutting edge, the intersection of the opposing short cuts can be prevented from directly affecting the edge of the finished product side, thereby reducing the risk of burrs, gaps, or fiber tearing at the terminal position.

[0037] When fiber bridging exists at the terminal position, the offset side of the fiber bridging is first determined based on the target cutting edge. The offset side of the fiber bridging can be determined by comparing the position of the fiber bridging body relative to the target cutting edge; when the fiber bridging body is closer to the finished product side, it is determined to be biased towards the finished product side; when the fiber bridging body is closer to the waste side, it is determined to be biased towards the waste side. If the fiber bridging is biased towards the finished product side, a short cut towards the opposite direction closer to the finished product side is performed first, so that the fiber entanglement near the finished product side is weakened or cut off first. The endpoint of the short cut towards the opposite direction closer to the finished product side is set to a position away from the target cutting edge, so that the cutting endpoint does not fall directly on the edge of the finished product side. Then, a short cut towards the opposite direction closer to the waste side is performed, so that the residual fibers are released towards the waste side. Through this cutting sequence, the fiber entanglement on the finished product side can be controlled first, and then the residual entanglement can be guided to the waste side, thereby improving the integrity of the target cutting edge.

[0038] The intersection position of the opposing short cuts can be determined based on the bridging length of the fiber bridging. The bridging length can be obtained by detecting the extension range of the continuous fiber bridging area between the finished product side and the waste side, or by the visible length of the unbroken fibers in the terminal position image. When the bridging length reaches a preset length threshold, it indicates that the residual fiber entanglement range at the terminal position is large. If the intersection position is still close to the target cutting edge, it is easy to cause pulling on the finished product side during through-cutting. Therefore, the intersection position is shifted towards the waste side, and the overlap length between the opposing short cuts on both sides is increased according to the preset overlap adjustment value, so that the opposing short cuts on both sides can cover a longer fiber bridging area. The preset length threshold and preset overlap adjustment value can be preset based on the padding fiber length, fiber density, cutting tool width, and allowable waste allowance at the terminal position. If the bridging length reaches the preset length threshold, and the fiber bridging is biased towards the waste side relative to the target cutting edge, then the opposing short cuts closer to the waste side are performed first to form a traction weakening opening on the waste side. This traction weakening opening is used to reduce the pulling effect of the fiber bridging on the finished product side. Then, perform opposing short cuts near the finished product side, causing the fiber bridging to break at the intersection towards the waste side. This process ensures that the fiber bridging breakage point at the terminal position is far from the target cut edge, reducing the impact of subsequent through-cutting on the edge quality of the finished product.

[0039] Example 1: In one embodiment, Company A controls the cutting of a pre-formed ceramic fiber composite liner with a thickness of 8mm. The liner is first placed on a cutting platform, and its planar displacement is restricted by a positioning fixture. Then, a visual recognition device acquires the outline to be cut. The position within the outline to be cut that forms the outer edge of the final product is determined as the target cutting edge. Using this target cutting edge as the cutting reference, the outline is divided into multiple cutting segments based on the curvature changes at different positions.

[0040] For each cutting segment, a trial cutting path is first formed on the scrap side near the target cutting edge, covering the location in the corresponding cutting segment where the contour direction changes significantly. During the trial cutting, the cutting resistance fluctuation value is collected through the cutting drive mechanism, and the fiber bridging length between the finished product side and the scrap side is collected through the image detection device, as well as the fiber extension length at the cut edge. The cutting resistance fluctuation value reflects the degree of material resistance change when the tool passes through the cutting segment, the fiber bridging length reflects the degree to which the ceramic fibers on both sides of the cut are not broken, and the fiber extension length reflects the degree to which residual fibers near the target cutting edge are pulled out. Figure 2 The normalized results of three test cuts show the determination status of cut segment A. The ratio of each collected value to the corresponding determination value is higher than the fiber drag determination line, which can intuitively reflect the necessity for this cut segment to enter the short cut control process.

[0041] In this embodiment, whether a cutting segment is a fiber-dragging cutting segment is first determined according to a single-item threshold rule. That is, when any of the collected values—cutting resistance fluctuation value, fiber bridging length between the finished product side and the waste side, and fiber extension length at the cut edge—reaches the corresponding preset judgment value, the corresponding cutting segment is determined to be a fiber-dragging cutting segment. Based on the above single-item threshold determination, a comprehensive fiber-dragging risk evaluation value can also be calculated to characterize the degree of fiber-dragging risk of the corresponding cutting segment and serve as a reference for setting subsequent short-cutting unit length, fiber breakage spacing, waste side offset, or recutting sequence. The comprehensive fiber-dragging risk evaluation value satisfies the following relationship:

[0042] In the formula, This is the comprehensive risk assessment value for fiber optic cable dragging. These are the cutting resistance fluctuation values ​​collected during the trial cutting process. The preset resistance fluctuation judgment value, This refers to the fiber bridging length between the finished product side and the waste material side. To preset the bridging length determination value, The length of the fiber extension at the cut edge. The preset extension length determination value, These are the weights corresponding to the cutting resistance fluctuation, fiber bridging length, and fiber extension length, respectively. The purpose of this relationship is to normalize and comprehensively evaluate the three types of fiber dragging-related detection quantities that have been collected, so as to reflect the strength of the fiber dragging risk in the cutting segment; this comprehensive evaluation value of fiber dragging risk does not replace the judgment rule that a fiber dragging cutting segment is determined when any of the aforementioned individual collected values ​​reaches the corresponding preset judgment value.

[0043] For example, when test-cutting section A, the collected cutting resistance fluctuation value is 6.8N, the preset resistance fluctuation judgment value is 5.0N, the fiber bridging length is 1.2mm, the preset bridging length judgment value is 1.0mm, the fiber extension length is 0.6mm, the preset extension length judgment value is 0.5mm, and the weights a, b, and c are 0.40, 0.35, and 0.25 respectively. Then:

[0044] As calculated above, the comprehensive risk assessment value for fiber dragging in section A is 1.264, and its cutting resistance fluctuation value, fiber bridging length, and fiber extension length all reach the corresponding preset judgment values. Therefore, according to the single-item threshold judgment rule, section A is determined as a fiber dragging cutting section. Simultaneously, the parameter adjustment intensity for subsequent short-cutting processing of this section can be determined according to the risk grading rule below, based on the comprehensive risk assessment value for fiber dragging. For cutting sections where none of the collected values ​​reach the corresponding preset judgment values, they are determined as non-fiber dragging cutting sections and are continuously cut according to the preset cutting interval.

[0045] To clarify the correspondence between the comprehensive risk assessment value of fiber dragging and the parameter adjustment intensity, in this embodiment, the comprehensive risk assessment value of fiber dragging is denoted as R. R is used to select the parameter level for subsequent short-cutting processing after the cutting segment has been identified as the fiber dragging cutting segment. Its related parameters include the short-cutting unit length, fiber breakage spacing, cutting direction, waste side offset, short-distance supplementary cutting length or number of times, and the offset and overlap length of the opposite short-cutting intersection position in the terminal bridging process.

[0046] Specifically, 1.00 and 1.20 can be used as the risk classification boundaries for R. When R is lower than 1.00 but is determined to be a fiber dragging cutting segment because any single collected value reaches the corresponding preset judgment value, it is determined to be a mild fiber dragging risk. Short cutting is performed according to the basic short cutting unit length and the basic fiber breakage spacing, and reverse cutting is only used when the fiber entanglement direction is consistent with the cutting advancement direction. When 1.00≤R<1.20, it is determined to be a moderate fiber dragging risk. The basic short cutting unit length is shortened by a preset length level, and the fiber breakage spacing of the next short cutting unit is reduced according to the aforementioned fiber breakage spacing relationship. When R≥1.20, it is determined to be a severe fiber dragging risk. On the basis of the moderate fiber dragging risk adjustment, the short cutting unit length is further shortened, the fiber breakage spacing is reduced, and the waste side offset, short-distance supplementary cutting length, or opposite short cutting overlap length is increased, so that the entangled fibers are weakened and broken preferentially on the waste side.

[0047] The above risk classification does not change the individual threshold judgment rules, but is only used to determine the parameter adjustment intensity of subsequent short-cutting processes. Within the same risk level, each parameter is still successively corrected based on the fiber bridging length, fiber entanglement direction, and terminal bridging length detected by the previous short-cutting unit. Taking cutting segment A as an example, R is 1.264, corresponding to a severe fiber dragging risk. Therefore, subsequent short-cutting processes adopt shorter short-cutting units, smaller fiber breakage spacing, necessary reverse cutting, larger waste side offset, and waste side short-distance supplementary cutting or opposite short-cutting overlap control.

[0048] For segment A, which is identified as a fiber-dragging cutting segment, instead of directly cutting through the target cutting edge, the segment is first divided into multiple short-cutting units, creating fiber breakage gaps between adjacent units. These short-cutting units are arranged sequentially along the extension direction of the target cutting edge, which serves as the cutting direction. After each short-cutting unit is cut, an image detection device detects the fiber bridging length and fiber entanglement direction near that unit, determining the fiber breakage gap and cutting direction for the next short-cutting unit accordingly. Figure 3 The target cutting edge is used as the dividing line between the finished product side and the waste side. Multiple short cutting units are arranged sequentially along the same fiber-dragging cutting section, showing the coordination relationship between fiber breakage spacing, forward cutting and reverse cutting in the same area.

[0049] In this embodiment, the fiber breakage spacing is the distance between two adjacent chopped units in the direction of extension of the target cutting edge. The fiber breakage spacing is used to control the degree to which fibers are weakened and cut between adjacent chopped units. When the fiber breakage spacing is too large, continuous fibers between the finished product side and the waste side are prone to bridging between adjacent chopped units; when the fiber breakage spacing is too small, although it is beneficial for fiber breakage, it may cause repeated cutting in the same area. Therefore, in this embodiment, the fiber breakage spacing of the subsequent chopped unit is adjusted according to the fiber bridging length and fiber entanglement direction after the previous chopped unit is cut.

[0050] Specifically, let the first The short cut unit and the first The current fiber breakage spacing between the short-cut units is , No. The fiber bridging length detected after cutting each short-cut unit is: The target control length is The spacing adjustment coefficient is The directional compensation amount is When the first When the fiber entanglement direction after cutting by a short chopped unit is consistent with the cutting advance direction, the direction flag value is taken. When the first When the fiber entanglement direction after cutting by a short chopped unit is inconsistent with the cutting propulsion direction, the direction flag value is taken. The fiber break spacing corresponding to the next short-cut unit. The following relationship must be satisfied:

[0051] In the formula, This represents the current fiber break spacing. This refers to the fiber breakage spacing corresponding to the next short-cut unit. For the first Fiber bridging length detected after cutting a short chopped unit To control the length of the target, This is the spacing adjustment coefficient. This is the direction flag value. This is the directional compensation amount. Wherein, Limiting the fiber break spacing to a preset minimum. and preset maximum fiber break spacing Between; when calculated Less than At that time, according to Execute, when the calculation is obtained Greater than At that time, according to implement.

[0052] The control logic of this relationship lies in: when the fiber bridging length... Greater than the target control length When the fiber bridging length is low, it indicates that there is still significant continuous fiber entanglement near the previous chopped unit. In this case, reducing the fiber breakage distance of the subsequent chopped unit makes the subsequent chopped unit closer to the previous chopped unit, thereby improving the fiber breakage coverage between adjacent chopped units; when the fiber bridging length is low... Less than or equal to the target control length When the fiber entanglement risk is reduced, the fiber breakage spacing of the subsequent stubbing unit can be appropriately increased to reduce repeated cutting. When the fiber entanglement direction is consistent with the cutting advance direction, it indicates that the residual fibers are easily pulled along with subsequent cuts; therefore, directional compensation can be applied. Further reduce the fiber breakage spacing and make the subsequent short-cut unit use reverse cutting.

[0053] For example, the current fiber break spacing The fiber bridging length detected after the previous chopped unit is 0.8 mm. The target control length is 1.2mm. The spacing adjustment coefficient is 0.8mm. The directional compensation is 0.5. The value is 0.2mm. When the fiber entanglement direction of the previous stub unit is consistent with the cutting advance direction, ,but:

[0054] Therefore, the fiber breakage spacing between the subsequent chopped unit and the preceding chopped unit is determined to be 0.4 mm, and the subsequent chopped unit uses reverse cutting. By reducing the fiber breakage spacing and using reverse cutting, the continuous fibers between adjacent chopped units can be cut off, reducing the possibility of continuous traction of ceramic fibers along the target cutting edge. When the fiber bridging length is still detected to be greater than the target control length after the subsequent chopped unit cuts, the fiber breakage spacing of the next subsequent chopped unit is further reduced according to the above formula; when no fiber bridging is detected after the subsequent chopped unit cuts, or the fiber bridging length is less than the target control length, the fiber breakage spacing of the next subsequent chopped unit is appropriately increased according to the above formula, so that the chopped path gradually returns to the preset spacing range. Thus, the fiber breakage spacing can be dynamically adjusted according to the fiber bridging state and traction direction, thereby ensuring the fiber breaking effect while avoiding over-processing of the dragging fiber cutting segment.

[0055] If, after a stub unit cuts, the direction of residual fiber entanglement is detected to be consistent with the cutting direction, it indicates that the residual fiber is easily pulled by the subsequent stub unit. In this case, the subsequent stub unit employs a reverse cutting method, opposite to the cutting direction. The cutting tool enters the subsequent stub unit from the end furthest from the previous stub unit and moves towards the previous stub unit, thus creating a cutting force that is opposite to or intersects the fiber entanglement direction at the previous stub unit. This reverse cutting method severs the continuous fibers between adjacent stub units, reducing the likelihood of ceramic fibers being continuously pulled out along the target cutting edge. Figure 3 The direction of fiber entanglement is located near the target cutting edge, and the cutting direction of the subsequent short cutting unit is opposite to it. This reflects that the reverse cutting does not change the overall cutting benchmark, but weakens the local fiber entanglement at the short cutting unit level.

[0056] When a fiber bridging is detected between the finished product side and the waste side after the chopped strand unit cuts, the cutting endpoint of the next chopped strand unit is shifted to the waste side in a direction perpendicular to the target cutting edge. The fiber exit point formed on the finished product side is used as a reference point to ensure the cutting endpoint of the next chopped strand unit is positioned with that exit point facing the waste side. This prevents the intersection of adjacent chopped strand units from directly falling on the target cutting edge, thereby transferring the continuous fiber bridging position from the target cutting edge to the waste side and reducing the risk of secondary fiber pulling or gap formation on the finished product side edge. Figure 4 The broken line change of the offset endpoint on the waste side illustrates the process of adjusting the offset according to the detection results, where the 1.0mm offset position corresponds to the control state after the entanglement position is transferred to the waste side.

[0057] In this embodiment, the waste-side offset of the subsequent short-cutting unit is determined according to the following formula:

[0058] In the formula, This is the waste-side offset of the next short-cut unit. This represents the waste-side offset corresponding to the current short-cut unit. This is the offset adjustment coefficient. The detected fiber bridging length, The target control length is defined as follows: when the detected fiber bridging length is greater than the target control length, it indicates that the continuous fibers may still pull on the edge of the finished product, requiring the cutting endpoint of the next short-cutting unit to be further shifted towards the waste side; when the detected fiber bridging length is not greater than the target control length, the offset can be reduced, allowing the cutting path to gradually approach the target cutting edge.

[0059] For example, the waste side offset corresponding to the current short-cut unit. The detected fiber bridging length is 0.8 mm. The target control length is 1.2mm. The offset adjustment coefficient is 0.8mm. If the value is 0.5, then:

[0060] This determines that the cutting endpoint of the next chopped unit is offset 1.0 mm towards the waste side relative to the target cutting edge. The cutting control system generates the endpoint position of the next chopped unit based on this offset and determines whether to perform reverse cutting based on the fiber entanglement direction of the previous chopped unit. If fiber entanglement is still detected after the next chopped unit cuts, the waste side offset of the next chopped unit is increased by a preset step value; if no fiber entanglement is detected after the next chopped unit cuts, the waste side offset of the next chopped unit is decreased by a preset step value, so that the subsequent cutting path gradually approaches the target cutting edge.

[0061] After the continuous fiber attachment position has been transferred from the target cutting edge to the waste side, a short-distance supplementary cut is first performed on the waste side at the transferred continuous fiber attachment position. The start and end points of the short-distance supplementary cut are both located in the waste side area, and the cutting length of the short-distance supplementary cut is set according to the actual length of the continuous fiber attachment position, so that the remaining attachment fibers on the waste side are cut off. After completing the short-distance supplementary cut, a through cut is then performed along the target cutting edge. Figure 4 The short-to-medium distance recutting path is located on the waste side of the target cutting edge, which corresponds to the offset endpoint and the continuous fiber entanglement position. This indicates that the recutting action is performed after the entanglement position has avoided the finished product side edge, thereby avoiding the recutting process from pulling the target cutting edge again.

[0062] Through the aforementioned control method, the ceramic fibers within the fiber-dragging cutting section are first segmented and cut by multiple short-cutting units. Then, through reverse cutting, waste-side offsetting, and short-distance supplementary cutting, the continuous fiber traction position is guided to the waste side and cut. Consequently, during subsequent through-cutting along the target cutting edge, the fiber traction on the finished product edge is reduced, and burrs, gaps, and fiber protrusion at the target cutting edge are suppressed, thereby improving the integrity and stability of the cut edge of the ceramic fiber composite gasket.

[0063] During batch processing, the cutting control system can also track the number of trial cuts, short-distance recuts, waste material side offsets, and rework volume for each batch, and update the preset judgment values ​​and path parameters accordingly. This ensures that subsequent batches reduce repeated cutting and invalid strokes while maintaining fiber breaking effectiveness. This parameter update process reduces tool wear, drive mechanism energy consumption, and dust handling load, making it suitable for green manufacturing and energy-saving production of new energy products such as thermal protection pads for new energy vehicles and energy storage insulation pads.

[0064] Example 2: In one embodiment, Company A performs a final bridging process on a ceramic fiber composite liner that has undergone preliminary short-cutting. The ceramic fiber composite liner is 8mm thick. First, the outline to be cut is obtained using a visual recognition device, and the position used to form the outer edge of the final product is taken as the target cutting edge. Based on the curvature change of the outline to be cut, the outline is divided into multiple cutting segments, and the cutting resistance fluctuation value, fiber bridging length, and fiber extension length are collected through trial cutting paths to determine the fiber dragging cutting segments.

[0065] Within the fiber-dragging cutting section, the section is first divided into multiple short-cutting units, creating fiber breakage gaps between adjacent units. The cutting direction and fiber breakage gaps of the subsequent short-cutting unit are then adjusted according to the fiber bridging length and fiber entanglement direction after the previous unit's cut. After completing the cutting of two or more short-cutting units, bridging detection is performed on the terminal positions of the fiber-dragging cutting section. The terminal position is the connection point between the fiber-dragging cutting section and adjacent cutting sections, or a location where continuous fibers are likely to remain after the short-cutting unit is completed.

[0066] Bridging detection can be performed jointly by an image detection device and a contour detection device. The image detection device is used to identify continuous fiber images that cross the target cutting edge, while the contour detection device is used to identify localized connection areas between the finished product side and the waste side that are not separated. When a fiber bridging is detected that crosses the target cutting edge and connects the finished product side and the waste side, it indicates that the ceramic fiber at the terminal position has not been completely severed at the target cutting edge. If a through-cut is performed directly, the residual fiber at the terminal position may continue to pull on the edge of the finished product side. Figure 5 As shown, the target cutting edge separates the finished product side from the waste side. The fiber bridging in the terminal detection area extends from near the finished product side to the waste side. The bridging length B is marked as 2.4mm, which reflects that there is still a continuous entanglement across the target cutting edge at the terminal position.

[0067] In this embodiment, the offset side of the fiber bridging is first determined based on the target cutting edge. If the main body of the fiber bridging is located on the side of the target cutting edge facing the finished product side, the fiber bridging is determined to be biased towards the finished product side; if the main body of the fiber bridging is located on the side of the target cutting edge facing the waste material side, the fiber bridging is determined to be biased towards the waste material side. After determining the offset side, opposing short cuts are formed on both sides of the terminal position, so that the short cut paths on both sides extend towards each other, and the intersection of the opposing short cuts is offset from the target cutting edge. Figure 5 The medium-fiber bridging body is located in the waste-side region below the target cutting edge, so its detection results correspond to the processing state biased towards the waste side.

[0068] When fiber bridging is biased towards the finished product side, a short cut is first performed near the finished product side to weaken or cut off the fiber entanglement near the finished product side. The endpoint of the short cut near the finished product side does not fall directly on the target cutting edge, but is set at a position away from the target cutting edge. Then, a short cut is performed near the waste side to release the remaining fibers to the waste side, thereby avoiding secondary pulling on the edge of the finished product side caused by the terminal convergence cut.

[0069] When fiber bridging is biased towards the waste side, first determine whether the offset of the waste side at the intersection needs to be increased based on the bridging length. The bridging length is the visible length of the continuous fiber bridging area along the fiber extension direction at the terminal position, or it can be determined by the length of unbroken fibers in the image detection results. When the bridging length reaches a preset length threshold, it indicates that the residual fiber entanglement range at the terminal position is large, and the intersection position of the opposing short cuts needs to be offset towards the waste side so that the bridging break position is far away from the target cutting edge.

[0070] In this embodiment, the offset of the converging position of the opposing short cuts relative to the waste side of the target cutting edge satisfies the following relationship:

[0071] In the formula, The offset of the intersection point of the opposing short cuts relative to the target cutting edge towards the scrap side. This is the offset of the basic waste side. This is the offset adjustment coefficient. The detected fiber bridging length, The preset length threshold is used. The derivation logic of this relationship is that the larger the bridging length, the longer the continuous fiber remains at the terminal position, and the further away the intersection position needs to be from the target cutting edge. Therefore, based on the offset of the basic waste side, the offset is increased according to the part of the bridging length that exceeds the preset length threshold.

[0072] For example, the bridging length detected at the end position of the fiber optic cable cut section. The length is 2.4mm, and the preset length threshold is [not specified]. The offset of the base waste side is 1.5mm. The offset adjustment coefficient is 0.6mm. If the value is 0.4, then:

[0073] Therefore, the intersection point of the opposing short cuts is determined to be offset by 0.96 mm towards the scrap side relative to the target cutting edge. This intersection point does not fall on the target cutting edge, but is located in the scrap side region, causing the opposing short cuts on both sides to intersect on the scrap side, thereby reducing the impact of the intersection cut on the finished product edge. Figure 6As shown, as the bridging length B increases from 1.5mm to 2.4mm, the offset of the intersection position increases from 0.60mm to 0.96mm. This relationship shows that the intersection position gradually moves away from the target cutting edge as the bridging length increases.

[0074] After determining the intersection point, the overlap length between the two opposing short cuts is also determined based on the bridging length. The overlap length ensures that the two opposing short cuts cover the continuous fiber bridging area at the termination point, preventing unbroken fibers from remaining between the two short cut paths. The overlap length satisfies the following relationship:

[0075] In the formula, The overlap length between two opposing short cuts. Based on the overlap length, This is the overlap adjustment coefficient. The detected fiber bridging length, The preset length threshold is used. The derivation logic of this relationship is that the larger the portion of the bridging length exceeds the preset length threshold, the longer the continuous fiber area that needs to be covered. Therefore, the overlap length between the two opposing short cuts is increased based on the basic overlap length.

[0076] For example, the basic overlap length The bridging length is 0.8mm. The length is 2.4mm, and the preset length threshold is [not specified]. The overlap adjustment coefficient is 1.5mm. If the value is 0.5, then:

[0077] Therefore, the overlap length between the two opposing short cuts is determined to be 1.25 mm. The cutting control system generates opposing short cut paths based on the waste side offset of 0.96 mm and the overlap length of 1.25 mm, so that the two short cut paths intersect on the waste side and cover the detected fiber bridging area. Figure 6 The overlap length of the mid-phase short cut increases from 0.80 mm to 1.25 mm as the bridging length increases, indicating that the overlap length matches the bridging coverage area and does not leave uncut fibers at the terminal position due to the increase in the length of the bridging area.

[0078] When the bridging length reaches a preset length threshold and the fiber bridging is biased towards the waste side relative to the target cut edge, a short cut towards the waste side is performed first to create a traction weakening opening on the waste side. This traction weakening opening is used to preferentially weaken the pulling effect of the continuous fibers on the finished product side. Then, another short cut towards the finished product side is performed, causing the fiber bridging to break towards the waste side at the intersection point, and the break point does not fall on the target cut edge. Figure 7As shown, the waste side short cuts move towards the intersection position and form a traction weakening opening, and the finished product side short cuts then move towards the same intersection position. The intersection position is offset by 0.96mm from the target cutting edge towards the waste side, and a 1.25mm overlap coverage area is formed between the two short cuts.

[0079] After the opposing short cuts are completed, bridging detection is performed again at the terminal position. If fiber bridging across the target cut edge is still detected, the intersection position is shifted towards the waste side, and the coverage of the next set of opposing short cuts is increased; if no fiber bridging is detected, subsequent through cuts are performed along the target cut edge to ensure a smooth connection between the terminal position and the adjacent cut segment. Figure 7 The confluence point is located in the waste side area, and the traction weakening port is arranged adjacent to the short cutting path facing each other on the waste side, which can ensure that the subsequent through-cutting avoids the main fiber breakage position when passing the target cutting edge.

[0080] In the above manner, the fiber bridging at the end of the fiber cutting section is first identified, and then the cutting sequence and intersection area are determined based on the bridging offset side, bridging length, waste side offset at the intersection position, and the overlapping length of the opposite short cuts. This makes the fiber bridging breakage position far away from the target cutting edge, reduces burrs, gaps, and fiber tearing at the end position, and improves the integrity and stability of the side edge of the finished ceramic fiber composite liner.

Claims

1. A method for controlling the cutting of a ceramic fiber composite liner with variable-pitch partitions, characterized in that, include: Obtain the cut contour of the formed ceramic fiber composite liner. Based on the target cutting edge, divide the cut contour into two or more cutting segments according to the contour curvature. Form a trial cutting path in each cutting segment and collect the cutting resistance fluctuation value, the fiber bridging length between the finished product side and the waste side, and the fiber extension length at the cut edge during the trial cutting process. When any collected value during the trial cutting process reaches the corresponding preset judgment value, the corresponding cutting segment is determined as the fiber-to-wire cutting segment; When any collected value fails to reach the corresponding preset judgment value, the corresponding cutting segment is determined as a non-fiber-dragging cutting segment and cut continuously according to the preset cutting interval. Within the fiber-dragging cutting section, the fiber-dragging cutting section is divided into two or more short-cutting units, so that a fiber breakage spacing is formed between adjacent short-cutting units. The fiber breakage spacing and cutting direction of the next short-cutting unit are adjusted according to the fiber bridging length and fiber traction direction after the previous short-cutting unit is cut, so that the ceramic fiber is cut in segments. After the short-cutting unit is cut, it is cut through along the target cutting edge.

2. The method for controlling the cutting of variable-pitch partitions in ceramic fiber composite pads according to claim 1, characterized in that, Within the fiber-dragging cutting section, the extension direction of the target cutting edge is used as the cutting advance direction, and the cutting direction of the next short cutting unit is determined according to the fiber entanglement direction of the previous short cutting unit; when the fiber entanglement direction of the previous short cutting unit is consistent with the cutting advance direction, the next short cutting unit adopts reverse cutting to cut off the fiber entanglement between adjacent short cutting units.

3. The method for controlling the cutting of variable-pitch partitions in ceramic fiber composite pads according to claim 1, characterized in that, Within the fiber-dragging cutting section, when the stub cutting unit detects a fiber bridging between the finished product side and the waste side after cutting, the cutting endpoint of the next stub cutting unit is shifted to the waste side in a direction perpendicular to the target cutting edge, so that the continuous fiber entanglement position is transferred from the target cutting edge to the waste side.

4. The method for controlling the cutting of variable-pitch partitions in ceramic fiber composite pads according to claim 1, characterized in that, After two or more short-cut units are cut in the fiber-dragging cutting section, bridging detection is performed on the terminal position of the fiber-dragging cutting section. When a fiber bridging that crosses the target cutting edge and connects the finished product side and the waste side is detected, opposing short cuts are formed on both sides of the terminal position, so that the intersection of the opposing short cuts deviates from the target cutting edge.

5. The method for controlling the cutting of variable-pitch partitions in ceramic fiber composite liner according to claim 3, characterized in that, When the cutting endpoint of the next short cutting unit shifts to the waste side, the fiber exit point formed on the finished product side by the fiber entanglement is used as the avoidance reference, so that the cutting endpoint is located at a preset offset position of the fiber exit point toward the waste side, and the intersection of adjacent short cutting units is deviated from the target cutting edge.

6. The method for controlling the cutting of variable-pitch partitions in ceramic fiber composite liner according to claim 3, characterized in that, After the continuous fiber entanglement position is transferred to the waste side, if fiber entanglement is still detected after the next stub cutting unit, the waste side offset of the next stub cutting unit is increased by a preset step value; if no fiber entanglement is detected after the next stub cutting unit, the waste side offset of the next stub cutting unit is decreased by the preset step value.

7. The method for controlling the cutting of variable-pitch partitions in ceramic fiber composite pads according to claim 3, characterized in that, After the continuous fiber entanglement position is transferred from the target cutting edge to the waste side, a short-distance supplementary cut is first performed on the transferred continuous fiber entanglement position on the waste side. The cutting length of the short-distance supplementary cut is set according to the length of the continuous fiber entanglement position, and then a subsequent through-cut is performed along the target cutting edge.

8. The method for controlling the cutting of variable-pitch partitions in ceramic fiber composite liner according to claim 4, characterized in that, When there is a fiber bridging at the terminal position, the offset side of the fiber bridging is first determined based on the target cutting edge; if the fiber bridging is biased towards the finished product side, the opposing short cuts near the finished product side are executed before the opposing short cuts near the waste side, and the endpoint of the opposing short cuts near the finished product side is deviated from the target cutting edge.

9. The method for controlling the cutting of variable-pitch partitions in ceramic fiber composite liner according to claim 4, characterized in that, The intersection position of the opposing short cuts is determined according to the bridging length of the fiber bridging; when the bridging length reaches a preset length threshold, the intersection position is shifted to the waste side, and the overlap length between the opposing short cuts on both sides is increased according to a preset overlap adjustment value.

10. The method for controlling the cutting of variable-pitch partitions in ceramic fiber composite liner according to claim 9, characterized in that, When the bridging length reaches a preset length threshold and the fiber bridging is biased toward the waste side relative to the target cutting edge, a short cut is first performed near the waste side to form a traction weakening opening, and then a short cut is performed near the finished product side, so that the fiber bridging breaks toward the waste side at the intersection.

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