52 results about "Rejection rate" patented technology

The invention relates to the technical field of metal casting and powder metallurgy, in particular to a pressure self-adaption adjusting method and system for multi-material forging and pressing, and the method comprises the steps that 1, forging and pressing equipment and a parameter collecting system are initialized; 2, multi-parameter data in the forging and pressing process are collected in real time; 3, calculating the dynamic deformation resistance of the material based on the real-time parameters; step 4, generating a self-adaptive pressure regulation value according to the dynamic deformation resistance; 5, controlling a pressure executing mechanism to output a target pressure value; and 6, the forging and pressing process is continuously monitored and terminated, the step 2 to the step 5 are repeated until the displacement of the die reaches a preset forging and pressing completion position, the central processing unit sends out a termination signal, the pressure execution mechanism gradually unloads pressure to complete the forging and pressing process, and all parameters and adjustment records are stored for quality analysis. Through accurate pressure control and a closed-loop feedback mechanism, defects caused by too high or too low pressure are avoided, the rejection rate is remarkably reduced, and the qualified rate of products is increased.

The invention discloses an alloy bonding process parameter optimization method and system, and relates to the technical field of data processing, and the method comprises the steps: presetting a target microstructure state, and constructing an evaluation index system; actual microstructure data of a bonding interface in the alloy bonding process are obtained, and key evolution characteristics are marked to determine the thickness of a diffusion layer and grain size distribution; by comparing the actual microstructure data with the target microstructure state, a relation model of process parameters and microstructures is established, and first prediction is completed; analyzing the dynamic characteristics of the diffusion layer through the result of the first prediction, and completing second prediction in combination with a thermodynamic-diffusion threshold value; and deducing an optimal process parameter combination through a second prediction result to realize a target microstructure state. According to the method, the problems of target fuzziness, insufficient model precision and the like are effectively solved, the bonding quality and stability are remarkably improved, the rejection rate and the cost are reduced, and an innovative solution is provided for high-performance material processing.

The invention discloses a clamping and supporting tool for thin-wall parts, and relates to the field of clamping and supporting tools, the clamping and supporting tool comprises a box body part, a square inner groove is formed in the middle of one end of the box body part, a first clamping tool is arranged in the square inner groove, and the first clamping tool is of a frame type structure and is matched with the square inner groove in the box body part; a plurality of first inner grooves which are symmetrically distributed are formed in the peripheral wall of the first clamping tool, the first inner grooves are blind grooves, and clamping springs are fixedly installed at the bottoms of the first inner grooves; by means of the combined structure of a frame type / rod-shaped clamp, an elastic support and a process plate, traditional rigid clamping is replaced, clamping force can be evenly dispersed, plastic deformation during thin-wall part machining is effectively avoided, the size precision, shape tolerance and surface smoothness of parts are guaranteed, and the rejection rate of the parts is reduced; and meanwhile, damage to the inner wall caused by excessive supporting is prevented through the process plate (or the follow-up process plate), and the qualification rate of parts is further increased.

The invention discloses a non-standard mould base batch forming method and system, and relates to the technical field of mould base forming, and the method comprises the following steps: firstly, clamping a plurality of non-standard mould base workpieces to be machined on a machining platform of machining equipment, constructing a workpiece coordinate system according to a workpiece design reference, and determining a machining center coordinate system according to an equipment fixed reference point; then acquiring a reference angle and coordinate system parameters when the workpiece is initially clamped, measuring coordinate data of at least three feature points in a measurement coordinate system, and calculating a conversion matrix of an actual coordinate system relative to a machining center coordinate system according to the coordinate data; identifying features of to-be-processed parts of workpieces, selecting an adaptive processing strategy from a standard database, generating an actual processing path in combination with a conversion matrix, gathering the same tool processing parts according to the processing strategy, generating a tool path instruction in combination with cutting parameters, and processing a plurality of workpieces in batches according to the path and the instruction, so that accumulation of coordinate conversion errors is effectively avoided; therefore, the position precision of the to-be-machined part is ensured and the rejection rate is reduced.

The invention discloses an optimization method for an online quenching process of an aluminum alloy profile and a device used by the optimization method. According to the method, a test article is subjected to a quenching test in an off-line quenching system to obtain an optimal quenching scheme, and then the optimal quenching scheme is applied to an on-line quenching process. During the quenching test, carrying out initial quenching by adopting a profile test article, acquiring and judging whether the deformation of the profile test article meets the requirement or not, if not, adjusting a quenching scheme, carrying out the quenching test again by adopting a new test article until the deformation meets the requirement, then carrying out heat treatment, detecting and judging whether the mechanical property meets the requirement or not, and if not, adjusting the quenching scheme; and taking the final quenching scheme as the optimal scheme until the requirements are met. By adopting the optimization method, the rejection rate of aluminum alloy quenching can be obviously reduced, the production cost is reduced and the production efficiency is improved on the premise of ensuring the performance of an aluminum alloy profile product.

The invention provides an investment precision casting riser design method based on a reliability algorithm. The investment precision casting riser design method comprises the steps that process parameters of actual casting production and the fluctuation range of the parameters are determined; preliminarily designing a placement position and a size optimization range of a riser through a modulus method; performing integrated calculation to obtain defect conditions under different parameters; establishing a data model of casting riser size, process parameters and defects; establishing a fluctuation parameter group taking a design value as a reference; establishing the relationship between the riser size design value and the casting reliability; and optimization is carried out by taking the casting reliability reaching the standard as the constraint condition and taking the maximization of the actual casting yield as the target, and the optimized riser size is obtained. According to the method, a past design mode depending on experience is avoided as much as possible, and the process yield and rejection rate are effectively and intelligently balanced, so that the overall yield of castings is improved, the development cycle is shortened, and the production efficiency is improved.

The invention discloses a sorting and stacking method and a sorting and stacking device, and relates to the technical field of sorting and stacking. Firstly, a plurality of flat plate pieces conveyed by a first conveying line are sorted to a stacking and conveying mechanism through a sorting mechanical arm; then, the stacked parts are conveyed to a second conveying line through a stacking conveying mechanism, if Hlt; if M / 3, LMAXlt is determined; m / 2-N / 2, and if H is greater than or equal to M / 3, LMAX = M / 2-N / 2 to prevent interference between the stack conveying mechanism and the rack, H is the width of the flat plate piece in the second direction, M is the width of the rack in the second direction, LMAX is the maximum translation distance of the stack conveying mechanism in the second direction, and N is the width of the stack table in the second direction. According to the sorting and stacking method provided by the invention, sorting and stacking of the flat plates with different sizes can be realized, the universality is good, the cost is reduced, the economic benefit is improved, time and labor are saved, the sorting and stacking efficiency is improved, and the damage risk and the rejection rate are reduced.

The heading machine comprises a working plate, a feeding mechanism used for feeding screws needing to be machined is fixedly installed on one side of the top of the working plate, and a positioning mechanism is fixedly installed at the position, located on one side of the feeding mechanism, of the top of the working plate. And a stamping mechanism for extruding and forming screws in the positioning mechanism is fixedly mounted at the top of the working plate. By arranging the feeding mechanism, screws needing to be machined can be conveyed, then the arranged transferring mechanism can transfer materials in the feeding mechanism to the position of the positioning mechanism, and then the punching mechanism can push the screws transferred in the transferring mechanism to the interior of the positioning mechanism to be positioned. And then the punching mechanism continuously moves, the head of the screw can be formed through the positioning mechanism, the positioning mechanism can push the screw to retreat after the head of the screw is formed, and therefore the transferring mechanism can be conveniently used for taking the screw.

The invention discloses a residual stress deformation constrained thin-wall blade high-speed milling process parameter inverse solution method. The method comprises the following steps: constructing a residual stress gradient distribution characterization function of a block-shaped workpiece; iterating optimal values of a plurality of undetermined coefficients of the residual stress gradient distribution representation function, and calculating equivalent residual stress in the feeding direction and equivalent residual stress in the width cutting direction; fitting a mapping relation between the equivalent residual stress and the main shaft rotating speed, the roll angle and the feed amount per tooth, calculating the equivalent residual stress, applying the calculated equivalent residual stress to a corresponding position of the finite element model of the thin-wall blade, and fitting a deformation relation; step 3, establishing an optimization model according to the deformation relationship, and solving the optimization model by using a genetic algorithm to obtain the spindle rotating speed and the feed per tooth; due to the fact that the machining precision and the machining stability are improved, the rejection rate is reduced, and waste of raw materials and the cost of repeated machining are reduced.

The utility model discloses a bidirectional composite punching die, which belongs to the technical field of stamping dies and comprises a lower die and an upper die, a positioning seat is arranged on the upper surface of the lower die, a workpiece is placed on the positioning seat, and a guide mechanism is arranged between the lower die and the upper die. A top punching mechanism and a side punching mechanism which are adjacently distributed are arranged on the lower surface of the upper die, and the top punching mechanism and the side punching mechanism are used for synchronously punching the top and the inclined face of the workpiece. The problem of position deviation caused by sequential stamping in a traditional method is effectively solved, the consistency and stability of product quality are greatly improved, the rejection rate is effectively reduced, workpieces do not need to frequently run among multiple dies, the process conversion time and the waiting time of operators are greatly shortened, and the production efficiency is improved. And the efficiency of the whole production process is obviously improved.

The invention belongs to the technical field of machining, and particularly provides an engine test bench plate spring structure machining process method which comprises the following steps: S1, preparing a blank of a required specification and size of a part, and blanking the blank; s2, the blanked workpiece is subjected to heat treatment; s3, carrying out linear cutting on the workpiece subjected to heat treatment, wherein the linear cutting is carried out twice or three times; and S4, hole milling machining is conducted on the workpiece obtained after linear cutting, and forming machining of the plate spring is completed. S5, flaw detection is conducted on the formed plate springs, and the formed plate springs meeting the standard are screened; s6, the formed plate spring meeting the standard is subjected to surface treatment, plate spring machining is completed, the problems that in the existing plate spring part machining process, deformation is prone to occurring, and the thickness is uneven are solved, and the rejection rate is high; in the machining process of the plate spring part, the problems of deformation and uneven thickness are not prone to occurring, and the yield is high.

The invention discloses a real-time monitoring method for unbalance loading of a punching machine. The method is characterized in that loads of a left connecting rod and a right connecting rod on the punching machine are detected in real time; the method comprises the following steps: deducing a general relational expression of an unbalance loading force F based on a torsion balance principle, setting a relational expression of a reference position unbalance loading resultant force F 'in a control system of a punching machine, comparing a real-time load difference value F0 of a left connecting rod and a right connecting rod with the reference position unbalance loading resultant force F', and when F0 is more than or equal to 0.8 F 'and less than F', giving out an early warning by the control system; when F0 is larger than or equal to F ', the control system controls the punching machine to stop emergently and gives an alarm; the method has the advantages that the unbalance loading condition of the punching machine can be monitored and early warned in real time, an operator does not need to judge the unbalance loading condition of equipment by himself, and reliable protection is provided for the equipment and a die by adopting a graded early warning mode; meanwhile, due to real-time monitoring and early warning of unbalance loading of the punching machine, the stability and reliability of punching precision are ensured, the quality of punched products is improved, and the product size deviation and the rejection rate caused by unbalance loading are reduced.

The utility model discloses a special indexing device for processing a titanium alloy workpiece, which belongs to the technical field of titanium alloy workpiece processing and comprises a base and a plate body positioned on the base, the plate body is integrally welded on the base, an indexing plate designed in a C shape is mounted on the inner side of the plate body, and the indexing plate is positioned on the base. A ratchet wheel and a pawl installed above the ratchet wheel are further arranged in the disc body, a handle is further installed in the disc body, the handle is of a cylindrical design, and one side of the handle penetrates through the side portion of the disc body and horizontally extends to the outside, so that people can operate the handle on the outer side of the disc body, and the handle is connected with the ratchet wheel in a matched mode. The ratchet wheel can be driven when the handle rotates, and a plurality of semi-annular cams are installed on the inner wall of the disc body. According to the indexing device special for machining the titanium alloy workpiece, the machining efficiency of titanium parts is improved, the workpiece deformation problem caused by strict control over the clamping force is solved, the rejection rate of products is greatly reduced, and the strict size precision is controlled.

The invention belongs to the technical field of forging, and particularly relates to a forging process of a gearbox body, which specifically comprises the following steps: blanking, heating, upsetting, finish forging, punching and trimming, heat treatment, shot blasting, flaw detection and inspection and warehousing. The steel billet raw material is in a round bar shape, the diameter of the steel billet raw material is 145-155 mm, and the weight of the steel billet raw material is 25 In the heating procedure, the temperature of the blank is controlled to be 1170-1230 DEG C; in the upsetting process, the obtained steel billet is placed above a forging die and is punched and stretched by a punch, so that the whole die is filled with the blank to form a blank piece, and the upsetting height is 60-65 mm; in the finish forging procedure, the temperature after forging is controlled to be 800 DEG C or above, and the striking energy of the first four machines is controlled to be 30%; in the heat treatment procedure, Rm is 650-800 N / mm, the hardness HB is 205-245, and the metallographic grade is 1-4, the forming process of the gearbox body is changed from extrusion to stretching through the forging technology, the problem of clamping marks on the gearbox body is thoroughly solved, the product rejection rate is greatly reduced, and the production cost is reduced.

The invention discloses a method for forecasting the abrasion loss of a six-rack ultra-high strength steel cold rolling working roll. The method comprises the steps that rolling data of six racks are collected; the sliding abrasion loss and the rolling abrasion loss between the working rollers of the racks and the strip steel and between the working rollers of the racks and the middle rollers are calculated; correcting by comprehensively considering the influence of the temperature on the hardness of the roller; and outputting the abrasion loss of each rack. According to the invention, the wear condition of the working roll of each rack can be visually presented, the roll body needing to be replaced can be accurately positioned, the consumption cost is effectively reduced, reliable data support is provided for field staff, the stability and the high efficiency of the cold rolling process are ensured, the product quality problem caused by wear is avoided, the rejection rate is reduced, and the overall production efficiency is improved.

The utility model discloses an adjustable positioning metal product cutting device, relates to the technical field of metal processing equipment, and aims to solve the technical problems that the size error of a processed product is large, the production requirement cannot be met, the rejection rate is increased and the production cost is increased as the cutting precision is seriously influenced by the deviation of a current metal rod. Comprising a workbench, a cutting machine is fixedly arranged at the top of the workbench, a clamping piece and an extruding piece are further arranged on the workbench, the clamping piece comprises a limiting seat, an arc groove attached to the surface of a metal stick is formed in the top of the limiting seat, and clamping strips are movably installed at the two ends of the top of the limiting seat; under the action of the electric push rod, the arc-shaped pressing plate in the extrusion piece can apply pressure to the metal stick from the upper portion, the arc-shaped pressing plate and the clamping piece below form the up-down cooperative limiting effect, and the metal stick cutting device has the advantages that in the cutting process, the pressure is dispersed, the stress at the cutting position is uniform, and the cutting precision is improved.

A method for producing a camera. The method includes: providing prefabricated components; adjusting at least two of these prefabricated components relative to one another in accordance with at least one specified optimality criterion; and adhesively bonding the components to one another in the adjusted state; wherein prior data characterizing a specific specimen of at least one of the prefabricated components, and / or measured data in respect of the optical performance of the combination of the components adjusted with respect to one another, are mapped by a trained machine learning model onto a prediction for the optical performance that the camera will deliver once it has run through at least one additional production step after the adhesive bonding; and this prediction is used as feedback for an influencing action on the production process.

The invention provides a pouring control method and a pouring system, and relates to the technical field of pouring equipment. The pouring control method comprises the steps that the current material injection stage of pouring equipment is obtained, and the pouring equipment comprises a mold and a vacuum degree adjusting device; and based on the current material injection stage, determining a target adjustment strategy of the vacuum degree adjustment device in a plurality of preset adjustment strategies. And a vacuum degree adjusting device is controlled to adjust the vacuum degree of a cavity of the mold according to the target adjusting strategy, so that the cavity of the mold is in the vacuum degree corresponding to the current material injection stage. In the pouring process, the vacuum degree of the cavity is adjusted in real time, the production cost can be reduced, and the situation that the quality is poor or the rejection rate is high due to the bubble problem can be relieved.

The invention relates to the field of precision casting, and particularly discloses a nozzle ring blade patching polishing detection method, which comprises the following steps of: preparing a trailing edge detection sample plate and a chord length detection sample plate according to the design size of a blade, aligning the trailing edge detection sample plate with an exhaust edge of the blade and inserting, and observing whether the trailing edge detection sample plate is completely inserted into the exhaust edge of the blade; appropriate polishing is carried out according to the clearance between the inner wall of the trailing edge detection sample plate and the blade exhaust edge, the chord length detection sample plate is attached to the back side of the blade, and the normal distance between the chord length detection sample plate on the back side of the blade and the end face of the trailing edge detection sample plate is measured; the trailing edge detection sample plate and the chord length detection sample plate are prepared according to the theoretical model contour of the blade and are attached to the blade, whether the blade exhaust edge patch is polished in place or not is judged according to the distance between the trailing edge detection sample plate and the chord length detection sample plate, operation is easy and convenient, the polishing amount can be repeatedly corrected in the polishing process, production efficiency is improved, and production cost is reduced. The accuracy of polishing amount is easy to control, and the rejection rate is reduced.

The invention discloses a metering production scheduling platform integrated management method and system, and relates to the technical field of product production scheduling management, and the method comprises the steps: obtaining order information of a metering production scheduling platform; performing data reading on a database of the measurement production scheduling platform to obtain historical data and material inventory information; screening the material inventory information based on the product raw material composition information, and determining the number of raw materials; and performing judgment processing based on the raw material quantity and the product quantity. The material inventory information is retrieved through the order information, it is ensured that raw materials in the inventory can be used in production, in addition, in the production process, the raw materials are analyzed, damaged raw materials are prevented from being machined into products, the rejection rate is reduced, meanwhile, the product number and the product machining completion time are corrected, and the production efficiency is improved. The data of the product in the production process is more accurate, the state of the machining equipment is monitored, overload of the machining equipment is avoided, and the service life of the machining equipment is prolonged.

The invention discloses a method for improving the quality of a casting blank and reducing rolling scabs of a wire rod, belongs to a steelmaking metallurgy technology, and provides a scheme aiming at the problem of high rejection rate in the prior art. Factors of rolled metal scabbing caused by casting blank quality defects are systematically controlled, and casting blank skin bubbles, casting blank center cracks, casting blank surface vibration mark depth at a high pulling speed and cleaning difficulty of casting blank residual cutting slag are reduced. And in combination with a field production process, a process route and parameter design conforming to actual production are formulated, the casting blank quality is effectively controlled, and the rolled metal surface scabbing defect is greatly reduced.

The invention discloses a full-automatic batten-shaped workpiece two-way straightening machine in the technical field of plate straightening, which comprises a supporting unit, a pressure applying unit and a control unit, the supporting unit comprises a base, a main supporting part and a secondary supporting part which are symmetrically arranged above the base, and turnover parts which are respectively arranged at the two ends of the base; the main supporting part is located between the overturning parts arranged at the two ends of the base. The automatic detection straightening system is arranged, the straightening efficiency and precision are greatly improved, the straightening component is matched with the main supporting component and the auxiliary supporting component, the upper side and the lower side of a batten workpiece can be straightened under the condition that the workpiece is not turned over, the number of times of turning over the workpiece is reduced, the use flexibility of the device is remarkably improved, and the production cost is reduced. And the main supporting part and the overturning part can provide supporting from the lower portion and the two ends of the workpiece correspondingly when overturning is necessary, the problem that the straightness is reduced due to the dead weight is avoided, the straightening quality is improved, and the rejection rate is reduced.

The invention discloses a cavity insert grinding and polishing machining process, and belongs to the technical field of cavity insert grinding and polishing. The cavity insert grinding and polishing machining process comprises the following steps that S1, materials are selected; s2, grinding machine mechanical grinding; a high-precision numerical control grinding machine is adopted to preliminarily grind the cavity insert, and grinding wheels of different models are sequentially replaced to grind the cavity insert; s3, manual polishing treatment is conducted through a pneumatic polishing machine; s4, electroplating treatment is conducted, a layer of compact metal film is formed on the surface of the cavity insert in an electrolytic deposition mode, the surface hardness and abrasion resistance are enhanced, the attractiveness of the cavity insert is improved, corrosion can be effectively prevented, and the service life is prolonged; s5, product detection; the cavity insert is machined through the technology, high stability and uniformity of a workpiece in the machining process are guaranteed, smooth and uniform surface quality is provided, compared with a traditional technology, the yield is increased by about 20%, and rework and the rejection rate are greatly reduced.

The utility model relates to the technical field of dies, and discloses a die capable of reducing the rejection rate. The mold capable of reducing the rejection rate comprises a lower mold body, an equipment frame is arranged on the right side of the lower mold body, and a cleaning structure is arranged on the left side of the lower mold body. By arranging the limiting rods, the limiting grooves, the extrusion blocks and the threaded rods, the extending distances of the four extrusion blocks are adjusted in advance according to the abrasion condition of the limiting grooves, the limiting rods continuously move upwards when rotating on the outer walls of the threaded rods through the threaded grooves in the inner sides, and the circular truncated cone columns at the bottom ends of the threaded rods extrude the four arc-shaped frames in the limiting rods; after the arc-shaped frame is stressed, the springs and the extrusion blocks on the inner wall are extruded, the extrusion blocks penetrate through the movable grooves to extend outwards, the extending distance is adjusted, the adjusted limiting rods can be tightly clamped with the abraded limiting grooves through the four extrusion blocks, then the upper die and the lower die are tightly combined, the pressed and formed product does not have defects, and the rejection rate can be reduced.

The utility model provides a die plate for blanking a sealing ring, and belongs to the technical field of dies. The problem of how to reduce the rejection rate of sealing ring production is solved. According to the die plate for blanking the sealing ring, a plurality of blanking holes are formed in the die plate, a plurality of first clearance grooves are formed in the die plate, every four first clearance grooves form a group, a containing area is formed in the position, located in each group of first clearance grooves, of the die plate, and the blanking holes are formed in the containing areas. The template for blanking the sealing ring can reduce the rejection rate of sealing ring production.

The invention discloses a claw pole production and processing method which can repair part of claw poles with flaws to reduce the rejection rate of the claw poles, so that the production cost of the claw poles and the recovery cost of the scrapped claw poles are reduced. The surface performance of the claw pole is improved through annealing treatment, and the structure defect of the claw pole is eliminated, so that the possibility of flaws of the claw pole is reduced; and the claw pole is shaped for multiple times and multiple sections through the shaping machine cylinder, so that the shaping accuracy of the claw pole is improved.

The utility model relates to the technical field of metal container forming, and discloses a novel structure arch bottom forming die which comprises a die base installed on a cold extruding machine body, a male die and a female die, the male die and the female die are used for arch bottom forming, and the male die comprises a second punch. The female die comprises a die ring and a first punch. The die ring and the first punch are both fixedly installed on the die base, and meanwhile the die ring is arranged on the periphery of the first punch in a sleeving mode. The punch tip of the second punch is of an inwards-concave structure matched with the arch bottom, the top of the first punch is of an outwards-convex structure matched with the arch bottom, and the inwards-concave structure is matched with the outwards-convex structure; an inner ring is fixedly arranged in the die ring and arranged outside the top of the first punch in a sleeving mode. The second punch and the first punch are horizontally arranged oppositely, and meanwhile the second punch and the inner ring are in clearance fit with the clearance larger than zero. The forming height of the arch bottom is increased, the production standard is met, the strength and the pressure-bearing performance of the bottom of the aerosol can are enhanced, the production efficiency and the yield are improved, and the rejection rate is remarkably reduced.

The utility model relates to the technical field of stamping manufacturing devices, and discloses a metal label stamping manufacturing device which comprises a stamping mechanism, a clamping mechanism is arranged at the bottom of the stamping mechanism, and a main body mechanism is arranged at the bottom of the clamping mechanism. The stamping mechanism is arranged, the first stamping shaft and the second stamping shaft are arranged in the stamping mechanism, and the stamping disc is arranged in the stamping mechanism, so that each stamping action can reach preset pressure and position, and the consistency of finished products and the quality of detail processing are improved; by means of a linkage system of the first rotating shaft, the second rotating shaft and the belt and assistance of the first rolling shaft and the second rolling shaft, real-time power transmission and angle fine adjustment are achieved, it is ensured that materials are evenly stressed in the punching process, the rejection rate is reduced, a stable material positioning platform is provided through the clamping mechanism, and the machining efficiency is improved. It is guaranteed that the workpiece does not shift in the high-speed stamping process, and production safety and efficiency are improved.

The invention discloses an intelligent flexible fettling method, relates to the technical field of electric porcelain insulator production and processing, and aims to solve the technical problems that traditional fettling is low in efficiency, poor in precision and insufficient in consistency, and the prior art cannot cope with material shrinkage fluctuation caused by cutting heat. The core innovation of the method lies in breaking the industry inherent cognition of independent regulation and control of cutting parameters and shrinkage compensation, constructing a cutting heat-material shrinkage rate coupling model, reversely deducing actual shrinkage rate deviation by collecting cutting temperature data in real time, synchronously and dynamically correcting allowance compensation parameters and cutting parameters of a fine trimming section, and achieving cooperative coupling regulation and control of the allowance compensation parameters and the cutting parameters. According to the method, equipment does not need to be newly added, associated regulation and control of the cutting heat and the shrinkage rate are achieved only through software logic innovation, the machining precision is remarkably improved, the rejection rate of finished products is greatly reduced, and the method can be widely applied to the field of precision machining of ceramics and composite materials and is high in economical efficiency and generalizability.

The invention discloses a method for improving the dimensional stability of an ultra-high-strength steel cold stamping forming part, which comprises the following steps: S1, acquiring different optimal production parameters corresponding to parts produced by adopting ultra-high-strength steel materials with different performance intervals, constructing a production parameter database based on the performance interval information and the optimal production parameters of the ultrahigh-strength steel material; and S2, performance interval information of the ultrahigh-strength steel material provided by production is obtained, the optimal production parameters matched with the performance interval information are automatically selected from the production parameter database according to the performance interval information, and then parts are produced according to the selected optimal production parameters. According to the method, the optimal production parameters can be automatically selected from the production parameter database along with the change of the material performance of the ultrahigh-strength steel material during part production, so that the part production is not influenced by the material performance fluctuation of each supply, the production efficiency is improved, the stability of the part size is ensured, the part qualification rate is improved, and the production cost is reduced. And the rejection rate of materials and parts is reduced.