88 results about "Dressing method" patented technology

The invention relates to the technical field of cycloidal gear finishing, in particular to a grinding finishing method, equipment and device applied to the cycloidal gear machining process, and the method comprises the steps that the difference between the energy of all cutting force data in the main frequency neighborhood in the frequency domain and the total energy within the preset duration before all moments and the change trend of all temperature data are analyzed, and the cutting force data in the main frequency neighborhood in the frequency domain is obtained; high-frequency vibration heat risk degree; based on all the high-frequency vibration heat risk degrees and all the vibration data in a preset time period before the current moment, a modal decomposition algorithm is adopted to construct a first feature value; and on the basis of all the state data and all the high-frequency vibration heat risk degrees in a preset time period before the current moment, a second feature value is constructed by adopting a principal component analysis algorithm, a comprehensive feature value is determined by combining the first feature value, and the finishing speed and the feeding amount are adjusted. According to the method, the problem of self-adaptive lag of the trimming parameters is solved, and distortion of the cutting edge contour in the machining process of the cycloidal wheel due to multi-physics field interference is eliminated.

The invention relates to a grinding wheel dressing method and device, computer equipment, a computer readable storage medium and a computer program product. The method is applied to the grinding machine, the grinding machine comprises a grinding wheel and a dressing wheel, the side face of the dressing wheel is perpendicular to the end face of the grinding wheel, and the method comprises the steps that dressing parameters of the grinding wheel are obtained based on the interval time, and the dressing parameters comprise the dressing feed amount; according to the dressing feed amount, the dressing grinding wheel is controlled to dressed the grinding wheel, and the dressed grinding wheel is obtained; the first thinning amount of the first mark position of the dressed grinding wheel and the second thinning amount of the second mark position of the dressed grinding wheel are obtained; according to the second thinning amount, the compensation amount of the first thinning amount is determined; and the finished grinding wheel is finished again according to the compensation amount, finishing is stopped until the total thinning amount or the maximum finishing number of times of the grinding wheel is reached, and the finished target grinding wheel is obtained. By adopting the method, the grinding wheel dressing efficiency can be improved, and manual participation is reduced.

The invention belongs to the related technical field of grinding wheel dressing, and discloses a small-diameter ball head grinding wheel in-place precise dressing method and system based on multi-source information fusion. The method comprises the following steps: S1, rough finishing: (a) obtaining the coordinate of each point on a to-be-finished ball-end grinding wheel, calculating the rough finishing amount, and finishing the to-be-finished ball-end grinding wheel according to the rough finishing amount; (b) the step (a) is repeated until the difference value between the maximum distance and the minimum distance of the small-diameter ball head grinding wheel to be finished meets the rough finishing preset threshold value requirement; s2, fine finishing: (a) acquiring slice contours of the to-be-finished ball-end grinding wheel at different latitudes; and the finishing time of the contour of each slice layer under different latitudes is calculated, and fine finishing is carried out according to the finishing time until the characteristic parameters of each slice layer of the to-be-finished ball-end grinding wheel meet the preset requirements of fine finishing. By means of the method, precise and efficient finishing of the ball-end grinding wheel is achieved, the service life of the grinding wheel is prolonged, production cost is saved, and machining quality and efficiency are guaranteed.

The invention discloses a flexible dressing method for a grinding wheel with a complex profile, which comprises the following steps: S1, acquiring a grinding wheel profile, and acquiring a continuous fine dressing curve by adopting an equidistant line method according to the grinding wheel profile; s2, extracting entity segment data information of the continuous fine finishing curve to obtain fine finishing track information; s3, presetting a theoretical single cutting depth, discretizing the continuous fine finishing curve to obtain fine finishing discrete points, and creating a fine finishing discrete track according to the fine finishing discrete points; s4, constructing a profiling allowance distribution model; comprising the steps that a rough finishing boundary and a tool retracting position boundary are established based on fine finishing discrete points according to preset profiling allowance, and a rough finishing track is established according to the rough finishing boundary and the tool retracting position boundary; and S5, the grinding wheel is trimmed according to the rough trimming discrete track and the fine trimming discrete track in sequence. According to the method, the continuous fine dressing curve is automatically dispersed, and the dressing path under the condition of profiling allowance is designed, so that the grinding wheel dressing flexibility degree and the dressing accuracy and universality are improved.

The present invention provides a method for shaping a grinding wheel (16), which is used in a wafer (W) chamfering device for rough machining, performs shaping at a high speed by using a rough grinding dresser (10-1) so that the grinding wheel (16) becomes a rough-grinding target shape, leaving a machining allowance for shaping, and when the grinding wheel (16) reaches a permissible range of the rough-grinding target shape, performs shaping at a high speed by using the rough grinding dresser (10-1). The present invention relates to a method for shaping and dressing a grinding wheel having a complex groove shape, in which the grinding wheel is shaped and dressed into a target shape for fine grinding using a fine grinding dresser (10-2) having a larger grinding wheel particle size number than a coarse grinding dresser (10-1) as a fine grinding, whereby not only the molding of the grinding wheel having a complex groove shape can be performed with high precision and high quality, but also the time required for shaping and dressing a difficult-to-machine material can be shortened.

The invention discloses a few-axis-point dressing method for a drum-shaped worm grinding wheel. The dressing precision of a face gear worm grinding wheel is improved by avoiding the requirement of the grinding wheel for a tilting axis of a machine tool. The nominal slotting cutter is perpendicular to the axis of the grinding wheel, and the end face profile of the nominal slotting cutter is consistent with the section profile of a grinding wheel shaft, so that the requirement of a dressing wheel on a machine tool deflection shaft is avoided, the number of machine tool movement shafts participating in linkage in the grinding wheel dressing process is reduced, and the grinding wheel dressing precision is further improved; according to the method, only three machine tool shafts are used for finishing the worm grinding wheel of the opposite gear in a linkage mode, a grinding wheel rotating shaft, a radial moving shaft and an axial moving shaft are included, and a finishing path uniformizing method is provided so that precise and efficient finishing machining of the worm grinding wheel profile can be guaranteed. According to the method, the defects of high cost, poor flexibility and existence of principle errors of the formed dressing wheel can be avoided, and a theoretical foundation is laid for reverse adjustment of the tooth grinding error of the face gear or generating grinding of the tooth surface of the complex modified face gear.

The invention discloses a worm grinding wheel point finishing method for simplifying track point input. The worm grinding wheel point finishing method comprises the following steps that firstly, slotting cutter design parameters consistent with the normal section of a worm grinding wheel are deduced; 2, establishing a slotting cutter tooth surface equation, and solving a contact point of a point finishing wheel and a worm grinding wheel to obtain a point finishing track point; 3, establishing a theoretical motion relation between the point finishing wheel and the worm grinding wheel, and deducing a theoretical transformation matrix; 4, based on a machine tool kinematic chain, the actual motion relation between the point finishing wheel and the worm grinding wheel is established, and an actual transformation matrix is deduced; 5, the theoretical transformation matrix and the actual transformation matrix are combined, and a linkage relational expression of all shafts of the machine tool is solved; and 6, the machine tool is guided to execute finishing operation based on the linkage relational expression, the point finishing track points are only input once during first-time finishing, the problem that track control points need to be input for multiple times during multiple times of point finishing is solved, the operation efficiency of multiple times of point finishing can be remarkably improved, and the sand contour precision after finishing can be ensured.

An apparatus for synchronous laser-conformal and mechanical dressing of a forming surface of a diamond grinding tool, relating to the field of grinding tool dressing. The apparatus comprises Y-direction, X-direction, and Z-direction motion platforms configured to slide relative to one another. A laser head rotation shaft is vertically slidably arranged on the Z-direction motion platform, and a laser head is mounted on the laser head rotation shaft. A grinding tool rotation shaft is arranged on the Y-direction motion platform, a diamond grinding tool is arranged on the grinding tool rotation shaft, and a mechanical dressing mechanism is arranged on the Y-direction motion platform. The dressing method comprises: mounting the diamond grinding tool on the grinding tool rotation shaft, and adjusting the initial angle and position of the laser head; fine-tuning the relative position between the laser head and a forming surface of the diamond grinding tool and performing laser dressing; after the diamond grinding tool has rotated half a revolution, adjusting the position of a mechanical dressing wheel to begin mechanical dressing; and dressing the two sides of the forming surface of the diamond grinding tool respectively by means of mechanical dressing and laser dressing. The present invention achieves uniform removal and effective compensation for a concave-surface profile by laser, thereby improving the dressing accuracy and dressing efficiency of concave-surface diamond grinding tools.

The invention discloses a segmented combined type worm grinding wheel based on spiral surface structuring and a laser finishing method, and belongs to the technical field of precise gear grinding. The working surface of the inner side of a spiral tooth groove of the worm grinding wheel at least comprises a section of structured area and a section of unstructured area in the axial direction; the structured area is provided with a crescent groove used for forming a grinding fluid storage and abrasive dust discharge channel in the grinding process. And the unstructured area keeps a continuous grinding surface and is used for finishing the surface of the machined workpiece in the structured area. According to the method, the laser processing head is controlled through multi-axis linkage to accurately describe an arc-shaped processing track in a spiral expansion coordinate system, the morphology consistency and the space precision of grooves are guaranteed, and the manufactured worm grinding wheel has good cooling, chip removal and accurate grinding performance and is suitable for high-efficiency and high-precision gear manufacturing.

The application relates to a grinding wheel dressing device and a grinding wheel dressing method, which are used for dressing the teeth of two grinding wheels in a double-sided grinding device. The grinding wheel dressing device comprises a first dressing wheel and a second dressing wheel, which are used for dressing the teeth of the two grinding wheels respectively; a moving structure is used for controlling the first dressing wheel or the second dressing wheel to move; and a dressing structure is used for sending instructions to the moving structure, so as to control the first dressing wheel or the second dressing wheel to dress the teeth of the corresponding grinding wheel. The teeth of the grinding wheels in the double-sided grinding device are dressed, damage caused by the teeth of the grinding wheels to silicon wafers is avoided, and the product yield is improved.

The invention discloses a composite worm grinding wheel and a dressing method thereof.The composite worm grinding wheel is composed of a surface micro-structured grinding wheel body and a fine grinding wheel body which are axially connected into a whole, the surface micro-structured grinding wheel body adopts ultrasonic vibration to assist a single-point diamond pen in dressing, and a large number of separated-continuous oblique curve micro grooves are dressed in the tooth side face; cutting force, heat production and the temperature of a contact area are reduced by reducing the contact layer, the effective blade grinding number of the grinding wheel during grinding is increased, and the problems of blockage of the grinding wheel and thermal damage to the surface of a workpiece are effectively solved; a fine grinding working face is formed on the outer side tooth face of the fine grinding wheel, and the problem that the surface roughness is large is solved by using grinding materials with the large particle size number. The device integrates the functions of rough grinding and accurate grinding, machining is completed through one-time clamping, repeated clamping and positioning errors are reduced, materials are efficiently removed, chip removal and heat dissipation are improved, the machining precision and size consistency are improved, and the contradiction that efficiency, heat dissipation and surface quality are difficult to consider in the generating grinding process is solved.

The invention relates to the field of grinding wheel dressing, in particular to a novel binder accurate grinding roller grinding wheel and a surface dressing method.The device adopted in the surface dressing method comprises a rack, a control table and a grinding wheel frame are fixedly arranged at the upper end of the rack, a grinding wheel cover is fixedly arranged on one side of the grinding wheel frame, and a grinding wheel body is rotationally installed in the grinding wheel cover; a driving motor is fixedly arranged at the bottom of the rack and is in transmission connection with the grinding wheel body through a reduction gearbox, a first sliding table is fixedly arranged at the upper end of the rack, a second sliding table is slidably installed on the first sliding table in a matched mode, a dressing table is slidably installed at the upper end of the second sliding table in a matched mode, a clamping base is fixedly arranged on the dressing table, and a dressing pen is fixedly clamped in the clamping base. The progressive machining and finishing process combining rough finishing and fine finishing can be achieved on the grinding wheel body, operation is easy, finishing precision is high, the vibration problem can be thoroughly solved according to feedback data of vibration detection, and finishing quality can be improved.

To shorten the dressing time of a grinding wheel.SOLUTION: A dressing board 120 includes a first dressing grinding wheel 121 for shaping and a second dressing grinding wheel 122 for dressing, arranged under the first dressing grinding wheel 121. Thus, by lowering a rough grinding wheel 306 while grinding the dressing board 120 with the rotating rough grinding wheel 306, the rough grinding wheel 306 is allowed to cut into the first dressing grinding wheel 121 for shaping and the second dressing grinding wheel 122 for dressing, in this order. Therefore, shaping and dressing of the rough grinding wheel 306 can be easily performed without moving the rough grinding wheel 306 in the horizontal direction. Thus, the dressing time of the rough grinding wheel 306 can be shortened.SELECTED DRAWING: Figure 6

The invention relates to the technical field of centerless grinding machines, in particular to a centerless grinding machine grinding wheel high-steady-state finishing control method which can stably finish a high-precision grinding wheel in the dynamic process, a machine tool is provided with an MPM dynamic balancing instrument and adopts a marble lathe bed, and a three-phase asynchronous motor or a spindle motor is selected as a grinding wheel motor. A servo motor with the rated rotating speed of 3000r / min is selected as a diamond roller motor; in the process of dressing the grinding wheel by the diamond roller, the same-direction dressing mode that the linear velocity value VRlr when the spindle of the diamond roller rotates divided by the linear velocity value VGW when the spindle of the grinding wheel rotates is a fixed value qd is adopted; the dressing feeding of the grinding wheel dresser is controlled by a U shaft, and a fixed grinding wheel dressing amount is carried out each time of dressing.

To provide a dressing device for a grindstone, a dressing method for a grindstone, and a control program that can obtain more uniform sharpness over the entire grindstone surface.SOLUTION: A dressing device includes: a grindstone holding unit 30 capable of rotating a grindstone 12; a dresser holding unit 40 capable of holding a dresser 36 for dressing the grindstone 12; a moving mechanism unit 70 that moves at least one of the grindstone holding unit 30 and the dresser holding unit 40 so that the dresser 36 and the grindstone 12 are scanned relative to each other; and a control device 51 that controls the moving mechanism unit 70 so that when the dresser 36 contacts a large-diameter portion 210 of the grindstone surface 21, the dresser 36 and the grindstone 12 are scanned relative to each other at a first speed, and when the dresser 36 contacts a small-diameter portion 220 of the grindstone surface 21, the dresser 36 and the grindstone 12 are scanned relative to each other at a second speed higher than the first speed.SELECTED DRAWING: Figure 1

The present invention relates to an auto dressing apparatus for a superabrasive wheel of machine tools and an auto dressing method, wherein, when dressing the superabrasive wheel, a dressing reference position is automatically corrected and calculated according to measured values of a dressing wheel and measurements of the superabrasive wheel, and the superabrasive wheel is automatically dressed by moving a polishing spindle to the dressing reference position such that dressing is performed within a single machine tool without moving the superabrasive wheel to a separate dressing device, thus saving dressing time and costs, improving processing precision and quality through accurate dressing, maximizing productivity by reducing non-processing time, and improving safety and convenience for operators.

To provide a dicing device which eliminates a need for positioning of a dress board which was needed for setting a dressing range, and to provide a dressing method.SOLUTION: A dicing device grinds a dress board disposed in a dress stage with a blade to perform dressing of the blade. The dressing device includes: an imaging unit for acquiring an image of the dress board disposed in the dress stage; and a control unit for obtaining an attitude of the dress board based on the image and setting a dressing range which can be ground with the blade based on the obtained attitude.SELECTED DRAWING: Figure 1

The invention discloses a video virtual reloading method and system based on human body whole body mask guidance. The method comprises the following steps: extracting a human body whole body mask sequence, a skeleton key point sequence and a scene prompt word for describing a video scene from a video to be reloaded; a video generation network is constructed based on a diffusion converter DiT, a human whole body mask sequence and a skeleton key point sequence of a specified character are spliced with a Noisy Latent in a channel dimension to serve as input of the DiT network, scene prompt words and visual feature codes of to-be-changed clothes are injected into a converter module of the DiT network after being processed through a cross attention mechanism, and the scene prompt words and the visual feature codes of the to-be-changed clothes are converted into the scene prompt words and the visual feature codes of the to-be-changed clothes. And as content and style guidance of video generation, the DiT network executes a reverse diffusion process under multiple guides, generates a reloaded video and completes a virtual figure reloading task. According to the method, the quality, diversity and controllability of video reloading generation are remarkably improved, and a new technology and a new paradigm are provided for a reloading model in practical application.

To provide a new technique for suppressing occurrence of warpage of a dressing tool when a processing groove is formed in the dressing tool.SOLUTION: A dressing tool for dressing a blade of a cutting blade includes: a dressing layer which is composed of at least abrasive grains and a binding material fixing the abrasive grains; and a magnetic layer which is provided on one surface side of the dressing layer, and has magnetism.SELECTED DRAWING: Figure 2

The invention provides a Monel alloy plate blank edge defect online detection and coping method, and relates to the technical field of alloy plate quality detection, and the method comprises the following steps: receiving a detection instruction, and synchronously sending a scanning signal and an acquisition signal; a temperature field set on the light spot moving track is obtained, the temperature field set comprises light spot coordinates of a plurality of detection light spots and a cooling process sequence corresponding to each light spot coordinate of the edge of the plate blank, and the cooling process sequence comprises process temperatures at a plurality of sampling moments starting from the moment of laser closing; according to the cooling process sequence corresponding to each light spot coordinate, obtaining a cooling rate characteristic value corresponding to each light spot coordinate; taking a point position of the edge part of the plate blank corresponding to the light spot coordinate of which the cooling rate characteristic value is smaller than a first preset threshold value as a first defect point position; and based on all the first defect point positions, a target grinding path is obtained, and the grinding device is controlled to grind the edge of the plate blank according to the target grinding path. The invention provides an efficient, accurate and automatic online detection and coping integrated solution.

The invention discloses a multi-angle dress changing method and system, electronic equipment and a storage medium, and the method comprises the steps: obtaining a model drawing and at least one dress-up drawing, and determining the type of each dress-up drawing; generating an attention weight matrix corresponding to each dress-up picture based on the type of each dress-up picture and the model picture; performing multi-view analysis on each dress-up picture to generate a target potential space picture of each dress-up picture consistent with the angle of the model picture; performing primary noise addition on the set of the target potential space diagrams of the dress-up diagrams to obtain final dress-up space features; performing multiple times of noise addition on a weighted potential space diagram of the model diagram in the overall space features to obtain final model space features; wherein the overall spatial feature comprises a weighted potential spatial map of the model chart obtained by combining an attention weight matrix corresponding to each dress-up chart with a potential spatial map of the model chart, and a final dress-up spatial feature; and redrawing based on the final spatial features of the model to obtain a reloading model drawing.

To provide a processing device that enables the economical use of dresser boards. [Solution] The processing apparatus includes a holding means for holding the dresser board 12, a cutting means that rotatably supports a rotating shaft on which a cutting blade 26 is mounted, an X-axis moving means for moving the holding means in the X-axis direction, a Y-axis moving means for moving the cutting means in the Y-axis direction, a Z-axis moving means for moving the cutting means in the Z-axis direction, and a control means. The control means calculates the width of the cut formed in the dresser board 12 from the outer diameter (d) of the cutting blade 26 and the amount of cut (t) into the dresser board 12 as ω = 2(dt-t 2 ) 1 / 2 The calculated (ω) is used as the basis to set the index amount (Xi) of the cutting blade 26 in the X-axis direction relative to the dresser board 12.

Provided is a polishing pad dressing method capable of more uniformly dressing a polishing pad even when the surface of a rotating platform is curved. A method for dressing a polishing pad (100), in which a grindstone (12) of a pad dresser (1) to which the grindstone (12) is attached is pressed against the polishing pad (100) affixed to a polishing platform, and the grindstone (12) is brought into sliding contact with the polishing pad (100), whereby the polishing pad (100) is dressed. The radius of curvature (R1) of the dressing surface (12b) of the grindstone (12), which is in sliding contact with the polishing pad (100), in the radial direction of the polishing platform can be changed.

The present invention discloses an intelligent redrawing method and device for clothing texture replacement. The present invention adopts a structure-guided three-stage generation pipeline. First, the input structure map is enhanced through a super-resolution network to retain the clothing outline; secondly, a four-way continuous texture splicing strategy is introduced, combined with edge continuity loss to improve the seamlessness and naturalness of texture laying; finally, a conditional diffusion model is used to generate high-fidelity, personalized clothing images under the dual guidance of the depth map and the line drawing structure map and the spliced ​​texture map. Compared with the texture migration and virtual dressing methods, the present invention has higher structure retention and texture control capabilities, supports multi-modal input and diversified image editing, and improves the realism, controllability and application scalability of clothing images.

The embodiment of the invention discloses a virtual object reloading method and device, computer equipment, a medium and a program product, a target virtual object with a first hollow area is displayed, the first hollow area is an area corresponding to at least one wearable element of the target virtual object, and a first preview image located below the first hollow area can be displayed. The shot picture is displayed in real time based on the shooting function. And after a user executes a photographing operation, in response to the photographing operation for the photographing reloading function, fusing a first preview image obtained when the photographing operation is obtained to the first hollow area to obtain a first filling area, and obtaining a target virtual object with the first filling area. Therefore, the clothes changing function and the photographing function are combined, and the photographing and clothes changing function is obtained. According to the technical scheme, the wearable element is made into the hollowed-out area in advance, so that the shot preview image is displayed in the hollowed-out area based on the photographing and clothes changing function, clothes changing is completed, the operation complexity of clothes changing is reduced, and the rendering efficiency and the user experience feeling are improved.

The invention relates to a dressing mechanism for a grinding wheel of a centerless external thread grinding machine. The grinding roller is arranged corresponding to a grinding wheel and is driven by a driving device to rotate around the axis; the vertical feeding mechanism drives the grinding roller to move back and forth relative to the grinding wheel; the horizontal feeding mechanism drives the grinding roller to move in a left-right adjusting mode, the swing mechanism drives the grinding roller to rotate so that the axis of the grinding roller and the axis of the grinding wheel can form a corresponding included angle, and the swing mechanism drives the grinding roller to rotate to adjust the grinding angle of the grinding roller so that grinding wheels with different machining requirements can be dressed. And meanwhile, the vertical feeding mechanism and the horizontal feeding mechanism are arranged to drive the grinding roller to move, so that the grinding roller can finish and process the grinding wheel at one time.

The embodiment of the present application provides a discharge dressing method, system, equipment and medium based on the height of the abrasive grains coming out of the edge, which belongs to the field of diamond dressing technology. The method includes: obtaining the grinding wheel parameters of the diamond grinding wheel, extracting the fuzzy control strategy, the abrasive grains coming out of the edge height change threshold, the motion parameters and the power supply parameters from the database according to the grinding wheel parameters, and calculating the target discharge power according to the grinding wheel parameters; operating the CNC machine tool and performing pulse discharge according to the motion parameters and the power supply parameters, and calculating the real-time discharge power according to the pulse discharge waveform; then, calculating the abrasive grains coming out of the edge height of the diamond grinding wheel at different discharge times, when the difference in the coming out height is greater than the abrasive grains coming out of the edge height change threshold, updating the fuzzy control strategy; if the power difference between the real-time discharge power and the target discharge power is greater than the preset power deviation threshold, using the updated fuzzy control strategy to adjust the motion parameters and the power supply parameters. The present application can improve the accuracy of diamond dressing.

The present application relates to the field of grinding control, especially to a diamond grinding wheel dressing method and system. The method comprises the following steps: firstly, collecting the three-dimensional point cloud of the grinding wheel, and using a Kalman filtering mechanism combining wear model prediction and real-time data observation to accurately correct the three-dimensional point cloud to obtain the real wear state of the grinding wheel. Then, based on the corrected three-dimensional point cloud, an electrochemical activity degree for representing the electrolytic dressing efficiency of each point of the grinding wheel is calculated. Next, the electrochemical activity degree, the theoretical dressing amount of each point of the grinding wheel and the expected normal wear amount are taken as parameters, and an energy density matrix representing the dressing intensity requirement of each position of the grinding wheel is obtained by solving an objective function. Finally, the present application implements the adaptive and high-precision dressing of the grinding wheel by combining dynamic sensing and model prediction.

To provide a dressing device, a dressing method, and a tip manufacturing method capable of suitably controlling relative movement of a dresser board and a grinding wheel in a direction crossing a sliding surface during dressing or a load applied between them during dressing.SOLUTION: The dressing apparatus includes a board holding part that holds the dresser board, a moving part that moves the board holding part and the grindstones relative to each other in a direction intersecting sliding surfaces of the grindstones and the dresser board, and a measuring part that measures a load applied to the dresser board.SELECTED DRAWING: Figure 2

To provide a dressing method and a dressing device that can efficiently dress a grinding member.SOLUTION: The dressing method is for a grinding member (4) including abrasive grains and a binder for binding the abrasive grains, and comprises: a dressing step of causing the grinding member (4) and a dressing member (5) to collide with each other. In the dressing step, the dressing method may cause the grinding member to collide with the dressing member (5) having a hardness higher than that of the grinding member (4) based on a bonding degree of the abrasive grains by the binder.SELECTED DRAWING: Figure 1