63 results about "Waviness" patented technology

The invention provides a three-dimensional skin waviness fitting analysis method. The method comprises the following steps: performing boundary analysis on skin point cloud data obtained by laser measurement, performing interpolation sampling from the point cloud data according to a specified area and resolution to obtain point cloud coordinates which can reflect the real condition of the skin and are regularly arranged, performing bicubic spline surface least square approximation based on a sampling point set, and calculating the skin point cloud data according to the bicubic spline surface least square approximation. The method comprises the following steps: acquiring a reference curved surface reflecting the overall distribution trend of an analysis area, calculating distance deviation from a sampling point to the reference curved surface, carrying out filtering smoothing processing, forming a smooth deviation curved surface capable of reflecting the deviation condition of a measurement curved surface, extracting information such as wave crest and wave trough positions, wave amplitude, wavelength and slope in the deviation curved surface, and carrying out skin waviness characteristic analysis. According to the method, the tiny waviness characteristics of the irregular curvature surface of the aircraft can be extracted, the skin waviness distribution condition can be visually displayed, and the method has the advantages of being wide in applicability, small in error, high in reliability, low in time cost and the like.

The invention provides an aviation nacelle part waviness automatic detection and evaluation method, and belongs to the field of product production detection, and the method comprises the steps: carrying out the protocol scanning of part surface contour features, and obtaining the undistorted coordinate point discrete point cloud data of the actual surface contour; filtering the point cloud data; obtaining a piece of flattened deviation value discrete point cloud data; obtaining a flattened deviation value continuous curve by adopting a general standard curve reduction method; extracting waviness components, and obtaining a curve center line; obtaining a crest value and a trough value participating in calculation; and calculating the maximum wave amplitude, the waviness and the slope for evaluating the waviness by using the wave peak value and the wave trough value. According to the method, the relation between the minimum cut-off wavelength of the waviness and the sampling interval is stipulated, the undistorted reduction of the surface profile curve is ensured, the influence of non-waviness profile components in the digital evaluation of the waviness is eliminated through a combined calculation method, and the evaluation accuracy of the waviness of the aviation nacelle part is improved.

The invention belongs to the field of data processing, and particularly relates to a three-dimensional roughness evaluation method for a rock mass structural plane, which comprises the following steps of: performing multi-scale decomposition on point cloud data by utilizing two-dimensional continuous wavelet transform, and introducing scale confidence to correct the unreliability of small-scale analysis; the method comprises the following steps: automatically identifying valley point scales in a double logarithm correction scale roughness spectrum, and separating macroscopic undulations and microcosmic rough bodies representing roughness types; according to the method, the total roughness and the wave roughness energy ratio are combined, a double-threshold classification system is established, rock mass structural surfaces are divided into four types, and therefore more accurate and more physical mechanical response prediction and parameter bases are provided for stability analysis and support design of geotechnical engineering.

A blank sheet which is a material for an outer plate component for an automobile includes a steel sheet. A rolling direction of the steel sheet extends along a longitudinal direction of the blank sheet, and a thickness is 0.6 mm or less. The steel sheet may have a chemical composition in which arithmetic average waviness Wa is 0.10 to 0.30 μm. The steel sheet may have a chemical composition in which ΔC calculated from C20 that is a C content at a depth position of 20 μm from a surface, C60 that is a C content at a depth position of 60 μm from the surface, and Expression (1) is 0.20 to 0.90 mass % / mm, and a tensile strength is 500 MPa or greater,ΔC=(C60−C20) / (0.04)  (1).

By analyzing the micro-texture of the machined surface, inverse estimation of tool mounting eccentricity is realized on the machine tool. [Solution] Under predetermined workpiece parameters, simulation machining is performed based on multiple parameter sets obtained based on different tool parameters, tool attitude parameter settings, and cutting parameters, and the surface shape after machining for each parameter set is obtained. An optimization variable set is constructed based on each parameter set, and the optimization variable set when waviness is most sensitive to changes in tool mounting eccentricity is determined. The tool mounting eccentricity during machining of the workpiece sample is calculated using the constructed relationship between the tool mounting error and the peak-to-peak value of waviness. If the tool mounting eccentricity exceeds the predetermined value, the bull nose end mill is reattached and the workpiece sample is replaced so that the workpiece can be actually machined, and this calculation of tool mounting eccentricity is repeated until the tool mounting eccentricity becomes smaller than the predetermined value.

The invention discloses an aircraft surface waviness measurement and analysis method and system, and the method comprises the steps: scanning the surface of an aircraft according to a planned path through employing a three-coordinate measuring machine and a scanning probe, obtaining scanning data, and obtaining the scanning data for evaluation through employing a segmented scanning and segment-to-segment direct splicing mode for a hole, a pin and other structural parts; fitting based on scanning data to obtain a point deviation data set, calculating corresponding point arc length data based on the point deviation data and the point coordinate data on this basis, and drawing a graph by taking a horizontal axis as the point arc length data and a longitudinal axis as the point deviation data; and determining the surface waviness of the airplane by combining the derivative at the intersection point of the point deviation data curve and the transverse axis and the distance between the wave crest and the wave trough, thereby realizing the efficient and accurate measurement of cavities, welding seams and other obstacle structures on the outer surface of a large-scale airplane part or the whole machine and the accurate calculation of the waviness.

The invention relates to the technical field of machining part non-ideal surface generation, and particularly discloses a wavelet and fractal-considered assembly junction surface construction method which comprises the following steps: S1, according to an ideal mathematical model of an assembly junction surface, S2, comparing calculation methods of different fractal parameters, S3, aiming at the part assembly junction surface in different machining modes, calculating fractal fractal parameters according to a calculation method of the different fractal parameters; s4, the assembly junction surface is regarded as a structure formed by superposition of contours of different scales, S5, a power spectrum analysis method is introduced to analyze the surface contour curve characteristics of the assembly junction surface, and S6, according to the isotropic or anisotropic properties of the surface of the assembly junction surface in different machining modes, the surface contour curve characteristics of the assembly junction surface are analyzed. The statistical distribution characteristic parameters determined in the step S3 are introduced into characterization of the assembly joint surface; and S7, the contour curve characteristic parameters extracted in the step S4 are associated with the fractal parameters determined in the step S2. According to the method, multi-scale decomposition is carried out on the assembly joint surface through wavelet transform, and the specificity information of the roughness contour, the waviness contour and the shape error contour can be effectively extracted.

The application relates to the technical field of non-ideal surface generation of machined parts, and particularly discloses a construction method of an assembly joint surface considering wavelet and fractals, which comprises the following steps: S1, according to an ideal numerical model of the assembly joint surface; S2, comparing calculation methods of different fractal parameters; S3, aiming at the assembly joint surface of parts under different machining modes; S4, regarding the assembly joint surface as a structure formed by superposition of different scale contours; S5, introducing a power spectrum analysis method to analyze the surface contour curve characteristics of the assembly joint surface; S6, according to the isotropic or anisotropic properties of the assembly joint surface under different machining modes, introducing the statistical distribution characteristic parameters determined in step S3 into the representation of the assembly joint surface; and S7, associating the contour curve characteristic parameters extracted in step S4 with the fractal parameters determined in step S2. Through multi-scale decomposition of the assembly joint surface by wavelet transform, the specific information of the roughness contour, the waviness contour and the shape error contour can be effectively extracted.

Method for producing a workpiece (64) made of quartz glass, which has at least one melt-polished workpiece surface (113) for use in a plasma-assisted manufacturing process, comprising the process steps: a) Providing a workpiece (64) made of quartz glass which has at least one raw surface (111) produced by cutting or machining, and b) Polishing the raw surface (111) to the polished workpiece surface (113) by laser polishing using at least one laser beam (81) moving relative to the raw surface (111), wherein the relative movement is generated by superimposing a translational-oscillating movement and a feed movement, wherein, as a result of the translational-oscillating movement, a quasi-line (87) is generated by a relative velocity between the raw surface (111) and the laser beam (81) above 500 mm / s, and wherein the feed movement has a relative velocity between the raw surface (111) and the laser beam (81) between 1 mm / s and 50 mm / s, c) and wherein a polished workpiece surface (113) is produced which has a micro-roughness and waviness, wherein the white light interferometry at a spatial wavelength λ OMicroroughness measured in the range of 1 µm to 10 µm has a surface roughness Sa of less than 0.5 nm, characterized in that the measurement is taken by means of a white light interferometer at a spatial wavelength in the range λ O Surface roughness (waviness) measured from 100 µm to 1000 µm has a value Sa of more than 5 nm, where the quasi-line (87) has a radiation intensity within the quasi-line (87) on the workpiece (64) between 10 W / cm² 2 and 1000 W / cm² 2 is produced wherein, for laser polishing of an annular end face (80) of a hollow cylindrical workpiece (64), the feed movement comprises rotation of the end face (80) about the longitudinal axis (84), and the translational-oscillating movement comprises a reversing movement of the laser beam (81) between an inner workpiece surface (85) and an outer workpiece surface (86), and wherein the speed of the translational-oscillating movement is set higher in the region of the inner surface (85) than in the region of the outer surface (86).

The application discloses a method for controlling surface wave of a stamping cover outer plate reverse-drawing forming area, which comprises position control of effective line round of the reverse-drawing forming area of a process piece; after the first surface of the process piece is centered in a forming die, the first surface of the reverse-drawing forming area of the process piece is forcibly corrected in a bulging state, the forming die convex model surface is first reduced, then the forming die pressure material surface is correspondingly compensated; when the first surface of the reverse-drawing forming area of the process piece is in the bulging state, the forming die pressure material surface corresponding to the reverse-drawing forming area of the process piece is finally matched and researched at high speed for production verification. The application takes the accurate process piece position as a prerequisite, and correspondingly reduces the forming die convex model surface and correspondingly compensates the forming die pressure material surface, so that the forming die pressure material matching state can be controlled and high-speed production verification can be realized, thereby effectively and stably solving the surface wave problem of the stamping cover outer plate reverse-drawing forming area.

This invention provides a method for evaluating unvulcanized rubber that quantitatively assesses the occurrence of warping during extrusion molding of unvulcanized rubber components, thereby eliminating variations in evaluation by operators and enabling efficient evaluation. [Solution] An evaluation method for unvulcanized rubber comprising: an unvulcanized rubber composition preparation step of preparing an unvulcanized rubber composition corresponding to an unvulcanized rubber member; a test piece extrusion molding step of extruding the prepared unvulcanized rubber composition into a test piece of a predetermined shape using an extrusion molding device; an image acquisition step of acquiring an image of the obtained test piece from the thickness direction; an image processing step of processing the acquired image of the test piece and extracting the contour of the test piece from the image; a circumference estimation step of estimating the circumference of the test piece from the extracted contour of the test piece; and a waviness condition evaluation step of evaluating the waviness condition that occurred in the test piece from the estimated circumference of the test piece.

This invention discloses a method for controlling the edge waviness problem at the head of wide, thin steel plates, relating to the field of steel plate processing quality control technology. The specific steps include obtaining a preset value Fb for the bending roll force. 预 Determine Fb 预 Rolling length L acting on the head of the steel plate 头 Before the steel plate is bitten in during the finishing rolling stage, follow Fb 预 A bending force is applied to create a negative convexity in the transverse loaded roll gap of the rolls; rolling begins when the head of the steel plate bites in, continuing until the rolling length reaches L. 头 Then, restore the bending roll force to its initial value and continue subsequent steel plate rolling. Using the method of this invention, the problem of edge waviness at the head of wide, thin steel plates can be effectively controlled, enabling the straightness of the steel plate head to reach 1.2mm / 1000mm.

This invention discloses a ferritic stainless steel coil for bicycle rims and its manufacturing method. The method includes: hot-rolled coil annealing and pickling, with an annealing temperature of 900℃≤T1≤1000℃ and an annealing time of 1.0~1.5min / mm; cold rolling in the first pass, with a rolling deformation rate of 70%~88%; continuous annealing of the cold-rolled coil, with an H2 dew point of -40℃~-60℃, a residual oxygen content of <5ppm, an annealing temperature of 900℃≤T2≤980℃, and an annealing time of 1.0~1.2min / mm; cold rolling in the second pass, with a rolling deformation rate of 10.0%~13.0%, and a first pass rolling deformation rate of 5.0%~6.5%; leveling, with a leveling elongation rate ≥0.10%, and the edge waviness of the coil controlled to ≤0.020mm. The ferritic stainless steel coil for bicycle rims produced by this invention can achieve a good match between rigidity and springback. Its properties, thickness, shape and roughness can meet the manufacturing process requirements of bicycle rims as well as the performance requirements of corrosion resistance, high springback, high load-bearing capacity and long service life.

The invention discloses a double-layer worm grinding wheel for grinding a high-precision gear and a preparation method of the double-layer worm grinding wheel, the grinding wheel is composed of a coarse grinding layer and a fine grinding layer, and the coarse grinding layer is mainly used for rapidly removing allowance of the gear through a worm grinding wheel with the large particle size; according to the fine grinding layer, the tooth surface of the gear is polished through a worm grinding wheel with the small particle size, and therefore high-efficiency and high-precision grinding machining on the gear is achieved. The forming process of layered feeding and multi-step pressurizing is adopted, the double-layer worm grinding wheel which is controllable in density and hardness, clear in layer interface and free of layering and cracking is prepared, the double-layer worm grinding wheel is adopted for machining a high-precision gear, the machining efficiency can be improved by 20% under the condition that the service life of the grinding wheel is not shortened, and the surface waviness, ffalpha, of the gear is smaller than or equal to 0.7 micrometer.

The invention provides a method for predicting the surface waviness of a cold-rolled sheet for an automobile, and belongs to the technical field of surface quality detection of the cold-rolled sheet for the automobile. The method comprises the following steps: cutting a cold-rolled sheet for an automobile into a plurality of square samples with preset sizes by using linear cutting equipment, preparing speckles on the surface of one sample as a first sample, and taking the rest samples as samples without speckles; continuously loading the first sample through a plate forming tester, gradually drawing the first sample from a plane to form a cup shape, and ending the loading until the first sample has a failure characteristic; in the loading process, continuously collecting surface images of the first sample at a preset frequency through a digital image correlation measurement system, obtaining a strain-displacement fitting formula in combination with synchronous data, and determining target displacement corresponding to a preset dependent variable; and respectively stamping samples without prepared speckles to a target displacement, measuring the waviness of the cup-shaped sample, and fitting a strain-waviness mapping relation model to realize accurate prediction of the surface waviness of the cold-rolled sheet.

This application provides a data processing method for laser thickness measurement of strip steel. The method includes: acquiring initial laser thickness measurement data of strip steel; filtering and removing outliers and edge data of the strip steel to obtain preprocessed data; performing a first filtering on the preprocessed data to extract surface roughness data to obtain first-filtered data; performing a second filtering on the first-filtered data to extract waviness data to obtain second-filtered data; and calculating the second-filtered data according to at least one preset profile index to output data corresponding to at least one profile index. The technical solution provided by this application reduces the fluctuation of laser thickness measurement data to a certain extent.

Provided is an aluminum alloy plate for a magnetic disk, which is capable of reducing fine waviness after plating even if the content of Mn is low. Provided is an aluminum alloy plate for a magnetic disk, the aluminum alloy plate satisfying 3.0-6.5 mass% of Mg, 0.1 mass% or less of Mn, 0.01-0.35 mass% of Cr, 0.1 mass% or less of Fe, and 0.1 mass% or less of Si, and satisfying at least one of 0.01-0.5 mass% of Cu and 0.01-0.5 mass% of Zn, the remainder comprising impurities and Al, the average crystal grain diameter of the surface being 45 [mu] m or less, and the area ratio of the Brass orientation ({011} < 211 >) in the crystal orientation distribution of the surface being 11% or less.

This component extraction device comprises: a calculation unit that calculates a threshold value set for a filter on the basis of processing information indicating a condition for processing a processed surface by a tool; and an extraction unit that extracts at least one of a surface property component, a waviness component, and a shape component from processed surface data indicating the state of the processed surface using a filter to which the threshold value calculated by the calculation unit is set.

A metal strip (2) that extends in a width direction (yB) over a strip width (b) from an operator-side to a drive-side strip edge (4, 5) runs out of a roll stand (1) in a direction of transport (xB). An evaluation means (13) iteratively and repeatedly receives from a camera (8) an image (B) of the metal strip (2) captured by the camera (8). The camera (8) is arranged laterally above the metal strip (2). The evaluation means (13) determines, in a two-dimensional coordinate system relating to the respective image (B), for the operator-side and the drive-side strip edge (4, 5), the value of the one coordinate (y) as a function of the other coordinate (x) and thereby determines in the respective image (B) a characteristic of the respective strip edge (4, 5) as a function of the other coordinate (x). The evaluation means (13) uses the functional characteristic of the respective strip edge (4, 5) within a respective evaluation range (16) of the images (B) to determine a measure (M1, M2) for the edge waviness of the respective strip edge (4, 5).

This invention relates to the field of new materials technology, specifically to a low-optical-distortion, spotless, large-curvature tempered glass and its forming method. The glass substrate includes a glass matrix with a preset curvature and a large projected area. The surface physical tempering stress value of the glass substrate is 90MPa~150MPa, and the stress difference between different areas of its surface is controlled within 5MPa. Under anisotropic observation conditions, the glass substrate has no visible stress marks on its surface, and its transmitted optical distortion intensity is no greater than 0.05 diopter, with reflection waviness controlled within a preset extremely low threshold. By precisely controlling the surface physical tempering stress value between 90MPa and 150MPa, and creatively controlling the stress difference between different areas of its surface within 5MPa, the stress gradient approaches zero. This extreme stress uniformity fundamentally eliminates the optical birefringence phenomenon caused by local stress abrupt changes, resulting in completely no visible stress marks on the glass under anisotropic observation conditions.

The invention relates to the technical field of polishing jigs, in particular to an embedded type cavity polishing jig and a manufacturing method. In the industry, CNC carving is adopted for producing a polishing jig, burrs and knife patterns are prone to being generated and need to be removed through manual grinding, and the machining efficiency is low; a fiber rubber plate is generally adopted as a polishing jig, the rigidity is too high, the flexibility is insufficient, and when brittle materials are polished, the defects of edge breakage, scratches, edge raised grains and the like are prone to occurring. According to the embedded type cavity polishing jig and the manufacturing method, the jig base plate is manufactured through the punch forming process, burrs and knife lines are avoided, manual grinding is not needed, and the machining efficiency is improved. The jig base plate is provided with the cavity, the flexible inlay strip is tightly attached to the inner wall of the cavity, and the flexible inlay strip can absorb collision energy during polishing, so that the defects of edge breakage, scratching, edge raised grains and the like of the polishing piece made of the fragile material are reduced, and the yield of the polishing piece is increased.

This invention discloses a method and system for measuring and analyzing the surface waviness of aircraft. It employs a coordinate measuring machine and a scanning probe to scan the aircraft surface along a planned path to obtain scan data. For structural components such as holes and pins, segmented scanning and direct segment splicing are used to obtain scan data for evaluation. A set of point deviation data is obtained by fitting the scan data. Based on this, the corresponding point arc length data is calculated using the point deviation data and point coordinate data. A graph is plotted with the horizontal axis representing the point arc length data and the vertical axis representing the point deviation data. The surface waviness of the aircraft is determined by combining the derivative of the point deviation data curve at the intersection with the horizontal axis and the distance between the peaks and troughs. This achieves efficient and accurate measurement and calculation of waviness for large aircraft components or the outer surface of the entire aircraft where there are obstacles such as holes and welds.

The invention discloses a high-precision forming machining method for a U-shaped copper shield of a large steam-turbine generator, and relates to the technical field of large steam-turbine generator manufacturing. The high-precision forming machining method comprises the steps that the copper shield is split into a plurality of copper plates, and weld joints keep away from functional structure holes; friction stir welding tailor welding is adopted, and an N-1 advanced machining strategy is matched to reserve a matched machined part so as to guarantee the circumferential size precision; machining allowance is reserved on the blank, surface precision cutting is used for replacing compression molding, and welding stress and wave degree are eliminated; a basic hole is drilled in advance to serve as an absolute reference original point for functional hole machining; and a special tool is adopted for rigid protection in the whole process. Welding defects and stress concentration can be effectively eliminated, the flatness of the copper shielding surface is improved, precise attachment with the pressing ring is achieved, the problems of too high temperature rise and potential difference ignition are solved, meanwhile, the machining precision of the functional structure hole is guaranteed, the rejection rate is reduced, and the method is suitable for high-precision manufacturing of the large steam turbine generator stator end magnetic flux leakage shielding part.

To reduce waviness in irregularly shaped cross-section wires. [Solution] The method for manufacturing irregularly shaped cross-section wire comprises a preliminary drawing step in which an annealed wire with a circular cross-section is passed through a round die having a circular drawing hole, and a deformation drawing step in which the wire that has passed through the round die is sequentially passed through two or more irregularly shaped dies, each having a flattened cross-sectional shape with at least one pair of parallel sides. The total reduction in surface area is 56% or more and 70% or less.

The utility model belongs to the technical field of precise instrument manufacturing, and discloses a waviness measurement auxiliary device. The waviness measurement auxiliary device comprises a bearing assembly and a supporting assembly, the bearing assembly comprises a lap joint plate, the lap joint plate is provided with a lap joint plane and a bearing plane which are oppositely arranged, the lap joint plane is used for being attached to a surface to be measured, and the bearing plane is used for supporting a waviness instrument; the supporting assembly comprises a supporting rod and an adjusting piece, the supporting rod penetrates through the bearing assembly, and the adjusting piece can drive the bearing assembly to move along the supporting rod. The waviness measurement auxiliary device can play an auxiliary supporting role on the waviness instrument, so that the waviness instrument can stably and accurately measure a to-be-measured surface without being limited by the size of the to-be-measured surface, and the adjusting piece can adjust the position of the bearing assembly on the supporting rod. Therefore, the bearing assembly can be stably erected on to-be-measured surfaces with different heights, the application range of the waviness instrument is expanded, and the waviness instrument has high practicability.

Provided is a sliding member in which a first member having a low hardness and a second member having a high hardness slide against each other via a lubricant. The sliding member has an optimized profile relationship between large waviness and fine roughness applied to the first member, improved retention and wettability of the lubricant, and increased seizure resistance. In the sliding member in which the first member and the second member having a higher hardness than the first member slide against each other via a lubricant, an isotropic texture in which a valley area is 1000 μm2 / mm or more and 20000 μm2 / mm or less and RLo (λc: 0.08 mm) is 1% or more and 12% or less is applied to a part of the first member which is in contact with the second member.

This invention relates to the fields of machine learning and tooth surface waviness prediction. It discloses a method, apparatus, and device for predicting the waviness of tooth surfaces ground by worm gear grinding. The method includes: acquiring vibration signals from the grinding wheel spindle in three directions during worm gear grinding of helical gears and annotating them with semantic information to obtain an annotated dataset; constructing a tooth surface waviness prediction model based on the Goose optimization algorithm and optimizing an Extreme Learning Machine (ELM); inputting the vibration signals from the annotated dataset into the tooth surface waviness prediction model, and iteratively optimizing the input weights and biases of the ELM using a parameter optimization module to obtain a trained tooth surface waviness prediction model; and real-time acquiring the vibration signals of the workpiece being processed, extracting features from the real-time vibration signals using a feature extraction module, and then inputting the extracted features into the trained tooth surface waviness prediction model to obtain the ghost-order amplitude of the tooth surface waviness. This invention can improve the accuracy and efficiency of waviness prediction for worm gear grinding.

This invention discloses a rolling method for 1.2mm ultra-thin hot-rolled patterned steel plates in the field of hot-rolled steel production. The method includes the following steps: using ordinary carbon steel and controlling the thickness and length of the steel billet; heating using a hot-feeding and hot-charging method; performing rough rolling and finish rolling; laminar flow cooling of the finished steel plate; and finally coiling. This invention uses a slab of appropriate length, which helps reduce the temperature difference between the intermediate billet and the head and tail of the coil. The hot-feeding and hot-charging method increases the core temperature of the slab, facilitating stable rolling. Four passes of rough rolling further reduce the temperature drop at the finish rolling inlet. During finish rolling, by rationally controlling the rolling speed, plate crown, looper amount, bending roll force, and roll shifting amount, the resulting 1.2mm thick patterned plate has advantages such as good rolling stability, good pattern morphology, and excellent overall performance. It avoids defects such as rolled-off ends, waviness, and scrap in existing technologies, and can improve the yield of ultra-thin hot-rolled patterned plates.

The application relates to the technical field of machining processes, and discloses a prediction method and device for circumferential waviness of an outer circle grinding machining part and a terminal, the method comprising the following steps: acquiring a grinding wheel parameter and a workpiece parameter during outer circle grinding machining; acquiring a machining motion parameter during outer circle grinding machining; calculating a circumferential waviness amplitude value of the outer circle grinding part based on the grinding wheel parameter, the workpiece parameter and the machining motion parameter; obtaining a function of the circumferential waviness profile in a polar coordinate system; and obtaining the circumferential waviness profile based on the function. The grinding wheel parameter, the workpiece parameter and the machining motion parameter during outer circle grinding are acquired, the amplitude value is calculated by using an amplitude calculation coefficient, the profile function is calculated by using a profile calculation coefficient, the functions of predicting the grinding waviness profile and the amplitude value of the workpiece before grinding machining are realized, and theoretical basis is provided for pre-judging whether the machining precision of the part is qualified and for optimizing suitable machining process parameters.

The application relates to the technical field of bearing machining, and discloses a polishing device for bearing machining and a polishing method thereof. The device comprises a polishing table, a polishing wheel, a motor one, a moving block, a rotary clamping assembly, a guide groove, a screw rod, a motor two, and a curved cooling water pipe and a nozzle integrated on the moving block. The method comprises the following steps: calculating energy coefficients and temperature coefficients representing grinding heat generation and heat load in real time; calculating cooling supply-heat load dynamic matching degrees and direction symbols based on the energy coefficients and the temperature coefficients and cooling parameters; calculating process stability coefficients based on acoustic emission and waviness signals; and finally comprehensively calculating and adjusting target cooling liquid injection pressure through a preset model by comprehensively considering the above coefficients and basic pressure. The application realizes real-time, accurate and self-adaptive matching of cooling supply and grinding heat load, and effectively improves the machining quality, stability and efficiency of bearing polishing.