39results about How to "Improve grinding surface quality" patented technology

The invention discloses a diamond grinding wheel, which has multi-layer abrasive particle orderly arrangement, is high in bonding strength and is convenient to repair after being worn, and a production method thereof. The production method comprises steps of processing a grinding wheel basal body, cleaning and the like. According to the diamond grinding wheel and the production method thereof disclosed by the invention, a laser material increasing technology is adopted to accurately process, so that processing precision and processing quality are improved; a sandwich structure is adopted for sintering, so that the abrasive particles are prevented from moving, protruding height of the abrasive particles is guaranteed to be consistent, orderly arrangement of the diamond abrasive particles is realized, a chip space during grinding is great, grinding force is reduced, a grinding temperature is reduced, grinding efficiency is improved, and grinding surface quality is improved; power of a laser unit is controlled for controlling a sintering temperature, so that the diamond abrasive particles are prevented from graphitizing, and a metal bonder is combined with the diamond abrasive particles in a high-strength metallurgical mode; a manufacturing process further can be simplified; and the diamond grinding wheel is finished layer by layer after being worn, and then is continuously used, so that finishing is convenient, and the service life of the diamond grinding wheel is long.

The invention relates to a vertical post displacement grinder, comprising the grinder, carriage, grinding head, working platform and side front vertical post, X directional displacement guide track at the bottom of the carriage with the X drive mechanism connected to the machine, both sides of the middle of the vertical post having Z guide track sliders and Z dual axial drive mechanism and connected to the top of the carriage, with the machine in overall case plat, and the working platform fixed on the machine. It improves moving velocity and working efficiency, shortens moving distance, alleviating machine self weight and stability, effectively increasing machining precision, with dual axial gravity drive structure to improve the balance of the horizontal moving force and anti vibration feature for the benefit of the grinding surface quality.

The invention relates to the technical field of computers, and discloses a deformed curved surface grinding method, device and system based on computer vision, and the method comprises the steps that initial grinding parameters are set, and accurate grinding is conducted along an initial grinding track; obtaining a grinding surface image of the workpiece every time the workpiece is ground, and uniformly dividing the grinding surface image into n sub-images; inputting the n sub-images into a classification model to obtain corresponding n classification results; if the n classification results all show that polishing is completed, it is determined that polishing of the workpiece is completed; if the n classification results are all continuous grinding, continuous grinding is carried out according to the initial grinding parameters and the initial grinding track; and if the n classification results are that polishing is completed and polishing is continued, the initial grinding track and the initial grinding parameters are optimized according to the center point coordinates of all the to-be-polished areas, and the to-be-polished areas are ground according to the optimized grinding track and the optimized grinding parameters. Over-grinding and under-grinding can be avoided, and the grinding precision is improved.

The invention discloses an ultrasound-assisted vaporization cooling double-circle grinding system with an improved fog gun. The ultrasound-assisted vaporization cooling double-circle grinding system comprises a grinding wheel and a roller, wherein the roller is externally tangent to the grinding wheel. A case is arranged at one side of a grinding wheel support. A double-rod support is vertically arranged at the top of the case. A fog gun barrel is mounted at the top end of the double-rod support through a rotating shaft. A jet flow annular pipe net and an atomization annular pipe net are fixedto the front end of the fog gun barrel. The bottom end of the jet flow annular pipe net is connected to a metering pump through a liquid supply pipe. The bottom end of the atomization annular pipe net is connected to the case through a fog supply pipe. An electric control cabinet is arranged at one side of the case. The flow speeds of the jet flow annular pipe net and the atomization annular pipenet and the rotating speeds of a hub and a fan blade assembly are adjusted, the ratios of jet flow liquid drops to atomization liquid drops and air are changed, and meanwhile, the rate that jetting is conducted toward a grinding area in an integrally-columnar form is changed; axial ultrasonic vibration and longitudinal ultrasonic vibration are added to assist in the grinding process, and the Leidenfrost effect is reduced; and the grinding cooling effect is enhanced, and the grinding surface quality is improved.

A cathode device for the in-line high-speed electrolytic grinding for sharpening has a cathode cavity with terminal and insulating cover on its top, electrolyte feeding inlet, and the lower open arc part which is composed of 3 strip holes, front and back baffle plates, and a flexible shielding plate with an open slot. It can generate a continuous and compact oxidized film on the surface of abrasive disc.

The invention discloses a 3D printing grinding wheel with cooling channels, a laser 3D printer and a preparation method of the 3D printing grinding wheel and relates to the field of grinding wheel manufacturing. The 3D printing grinding wheel is provided with the internal cooling channels. Each internal cooling channel is formed by connecting micro channels communicating with one another. The internal cooling channels are optimized and designed through three-dimensional modeling software. The 3D printing grinding wheel is formed by conducting 3D printing forming on metallic bond and superhardabrasive materials. According to the 3D printing grinding wheel manufactured by the laser 3D printer through the preparation method, the metallic bond and superhard abrasive material grinding wheel with the internal cooling channels is manufactured through the laser 3D printing technology. The internal cooling channels are formed by connecting micro channels communicating with one another. In thegrinding process, the grinding wheel can effectively improve the permeability and wettability of grinding fluid, improve heat dissipation in a grinding zone, reduce grinding burns and improve the quality of ground surfaces.

The invention discloses a metal bonding agent 3D printing grinding wheel with a random porous structure and a device and method. The metal bonding agent 3D printing grinding wheel comprises a grindingwheel base body and a grinding wheel grinding main body, wherein the grinding wheel grinding main body is arranged at the outer side of the grinding wheel base body in a sleeving manner. The grindingwheel grinding main body is formed through 3D printing and provided with the random porous structure and comprises a metal bonding agent and a superhard grinding material. The ratio of the volume ofthe random porous structure to the volume of the grinding wheel grinding main body ranges from 15% to 45%. By means of the metal bonding agent 3D printing grinding wheel, the porosity and chipping containing space of the metal bonding agent 3D printing grinding wheel can be greatly increased; heat dissipation of a grinding area is improved; grinding burns are reduced; and grinding surface qualityis improved.

The invention discloses an impeller supercharging solid self-lubricating grinding wheel matrix structure. An impeller centrifugal pump structure is introduced into manufacturing of a grinding wheel; and the matrix structure mainly comprises a grinding wheel base plate and an impeller cover plate. An impeller is arranged on an impeller pedestal designed in the inner cavity of the grinding wheel base plate, the outer edge of the grinding wheel base plate is provided with a ring slot, and a one-way air inlet valve is arranged on the inner wall of the ring slot; during grinding, a main shaft of the grinding wheel drives the impeller in the inner cavity to simultaneously rotate at a high speed, so that high-pressure airflow is generated in the inner cavity; the high-pressure airflow bursts through the one-way air inlet valve, so that a solid lubricating agent filled in the ring slot is continually and properly precipitated on the surface of the grinding wheel under driving coaction of the high-pressure airflow, a centrifugal force, grinding heat and the like through micro pores on the outer wall of the inner cavity of the ring slot. The structure is simple and facilitates to popularize; and through the structure, the solid lubricating agent in the grinding wheel can be conveyed to a grinding arc area reliably with low cost, so that dry grinding can be realized.

The ultrasonic-assisted vaporization cooling double-circle grinding system with a fog cannon of the present invention includes: a grinding wheel and a roller that is circumscribed with it. A grinding wheel frame is provided on one side of the chassis. A double-rod bracket is vertically provided on the top of the chassis. The double-rod bracket The top of the fog cannon barrel is installed through the rotating shaft. The front end of the fog cannon barrel is fixed with a jet annular pipe network and an atomization annular pipe network. The bottom end of the jet annular pipe network is connected to the dosing pump through a liquid supply pipe. The bottom end of the ring-mounted pipe network is connected to the chassis through the mist supply pipe, and an electric control box is provided on one side of the chassis; by adjusting the flow rates of the jet annular pipe network, the atomization annular pipe network, and the flow rates of the hub and fan blade assembly respectively Rotation speed, changing the ratio of jet droplets, atomized droplets, and air, while changing the overall cylindrical spray rate to the grinding area, adding axial and longitudinal ultrasonic vibrations to assist the grinding process, and reducing the Leidenfrost effect should, enhance the grinding cooling effect and improve the grinding surface quality.

The invention discloses a grinding and thinning method for glass. The grinding and thinning method comprises the following steps of adopting a paralleled surface grinding machine as processing equipment; taking upper and lower grinding wheels or polishing pads as cutting tools; using a water-based cutting fluid to cool and lubricate a workpiece; and placing a glass workpiece between an upper cutting tool and a lower cutting tool for grinding, wherein a feeding mode of the processing equipment is that the mode of circular motion or linear motion is adopted for feeding; end faces of the upper and lower cutting tools work by adopting a parallel or angle opening mode, and the maximum cutting thickness of the workpiece is not more than granularity values of the cutting tools. By adopting the grinding and thinning method disclosed by the invention, the time for processing mobile phone glass is about 3S; compared with a traditional method, the grinding and thinning method disclosed by the invention has the advantages that the efficiency is improved by 6 times, the thickness dimensions of the workpieces are stable and controllable, the quality and the yield of products are improved, and labor intensity is reduced; and in addition, high-efficiency and high-quality automatic production of glass (such as a mobile phone glass panel and a sapphire panel) is easily realized.

The invention discloses a special dressing liquid for an ELID (Electrolytic In-process Dressing) composite material and a preparation method of the special dressing liquid and belongs to the field ofprecise-ultraprecise on-line electrolysis trimming and dressing. The special dressing liquid comprises the following constitution components: engine oil, soybean oil, thiopropyl triethoxy silane, dodecyl succinate diethanolamide, dimethicone, molybdenum disulfide, dialkyl phosphorodithioic zinc, nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, silicone emulsion, a morpholinederivative, boric acid, methyl benzotriazole, naphthenate, tri-m-tolyl phosphate, sulfide fatty acid ester, diethanol amine, triethanolamine, lauric acid, polyethylene glycol, sodium phosphate and deionized water. The dressing liquid has functions of electrolysis removal and trimming grinding in addition to properties of common dressing liquids, excellent cutting performance of grinding granulesin grinding wheels can be constantly maintained, and the problems that a composite material is low in removal rate, built-up edges are generated and processing surface quality and precision are low inthe machining process can be solved.

The invention discloses a grinding head device for grinding a silicon core or other crystalline materials and relates to the technical field of grinders. The grinding head device comprises a mounting plate (14), a shaft seat (9), a motor (17), a transmission mechanism and grinding wheels. The grinding head device is characterized by further comprising a planet system, wherein the planet system comprises pinions, a large gear (13) and a shaft cylinder (12); the large gear (13) is connected with the mounting plate (14) fixedly; the pinions are meshed with the large gear (13) respectively; the shaft cylinder (12) is connected with the shaft seat (9) through a bearing (1); the pinions are arranged at one end of the shaft cylinder (12); and the grinding wheels are arranged at the other end of the shaft cylinder (12). The grinding head device can meet a requirement of grinding an end head of the silicon core in a hole-type lapping technology; and working efficiency is high.

The invention relates to a method for controlling the grinding efficiency and the surface quality of a particle-reinforced titanium-based composite material. The particle-reinforced titanium-based composite material is composed of a Ti-6Al-4V titanium alloy base body and TiC or TiB reinforced particles distributed in a diffused mode. A single-layer brazing CBN grinding wheel is adopted to grind the particle-reinforced titanium-based composite material. The linear speed of the grinding wheel is 30 m / s. The feeding speed ranges from 3000 mm / min to 12000 mm / min. The grinding depth ranges from 0.005 mm to 0.030 mm. The reinforced particles on the surface of the particle-reinforced titanium-based composite material are removed in a cut mode by controlling settings of parameters in the rough grinding step, the semi-fine-grinding step, the fine grinding step and the buffing step, and accordingly the surface grinding quality is improved.

The invention discloses a diamond grinding wheel, which has multi-layer abrasive particle orderly arrangement, is high in bonding strength and is convenient to repair after being worn, and a production method thereof. The production method comprises steps of processing a grinding wheel basal body, cleaning and the like. According to the diamond grinding wheel and the production method thereof disclosed by the invention, a laser material increasing technology is adopted to accurately process, so that processing precision and processing quality are improved; a sandwich structure is adopted for sintering, so that the abrasive particles are prevented from moving, protruding height of the abrasive particles is guaranteed to be consistent, orderly arrangement of the diamond abrasive particles is realized, a chip space during grinding is great, grinding force is reduced, a grinding temperature is reduced, grinding efficiency is improved, and grinding surface quality is improved; power of a laser unit is controlled for controlling a sintering temperature, so that the diamond abrasive particles are prevented from graphitizing, and a metal bonder is combined with the diamond abrasive particles in a high-strength metallurgical mode; a manufacturing process further can be simplified; and the diamond grinding wheel is finished layer by layer after being worn, and then is continuously used, so that finishing is convenient, and the service life of the diamond grinding wheel is long.

The invention discloses a diamond grinding wheel with orderly arranged crystal-oriented abrasives. The diamond grinding wheel with the orderly arranged crystal-oriented abrasives is characterized in that the grinding wheel comprises a base body and an abrasive layer, the abrasive layer is composed of a large number of honeycomb-shaped micro-grinding units and a large number of cross-shaped micro-channels; the micro-grinding units are composed of amorphous carbon, diamond bonding layers and a plurality of crystal-oriented diamond abrasive grains; the amorphous carbon enables the abrasive crystals to be oriented, and the top surface of each abrasive grain is a smooth {100} crystal plane, and the side surface of each abrasive grain is a high-hardness {111} crystal plane, so that the cutting performance and wear resistance of the abrasive grains are enhances; the abrasive grains are connected into one body through the diamond bonding layers, a single abrasive grain can be prevented from falling off, the exposure height of the abrasive grains can be increased up to 60%-70% of the height of the micro-grinding units, and the service life of the grinding wheel is prolonged; the large number of honeycomb-shaped micro-grinding units are arranged orderly in a stagger mode, and the gaps of the honeycomb-shaped micro-grinding units form the large number of cross-shaped micro-channels; and the structure of the grinding wheel improves the effective flow rate of grinding fluid and chip removal ability and significantly enhances the grinding performance of the grinding wheel.

The invention discloses a low-damage machining method based on a sapphire crystal orientation and machining direction synergistic principle. The low-damage machining method comprises the following steps that S1, before sapphire machining, sapphire is oriented by adopting an X-ray crystal orientation device; S2, the sapphire is clamped on a CNC precision grinding machine, and the axial direction of a grinding wheel in the CNC precision grinding machine is arranged to be parallel to the c-axis direction of the sapphire; and S3, machining process parameters are set through programming, the sapphire is machined through the CNC precision grinding machine, for the M-face sapphire, the grinding wheel conducts grinding in the a-axis direction, and for the A-face sapphire, the grinding wheel conducts grinding in the m-axis direction. According to the method, the selected machining direction is beneficial to reducing the grinding force, reducing the possibility of falling of abrasive particles and improving the surface quality of sapphire grinding machining, and particularly, the method is of great significance to the manufacturing technology of large-size sapphires and groove type structures.

The invention relates to a vertical post displacement grinder, comprising the grinder, carriage, grinding head, working platform and side front vertical post, X directional displacement guide track at the bottom of the carriage with the X drive mechanism connected to the machine, both sides of the middle of the vertical post having Z guide track sliders and Z dual axial drive mechanism and connected to the top of the carriage, with the machine in overall case plat, and the working platform fixed on the machine. It improves moving velocity and working efficiency, shortens moving distance, alleviating machine self weight and stability, effectively increasing machining precision, with dual axial gravity drive structure to improve the balance of the horizontal moving force and anti vibration feature for the benefit of the grinding surface quality.

The invention provides a sectional compensation method for ball screw machining. The method is characterized by comprising following steps: acquiring a reference curve obtained through the analysis and calculation of a ball screw machining process; determining a reference error circle; acquiring the slope of a reference common tangent according to the center of the reference error circle and an origin point of the reference curve; determining the center of the reference error circle point by point along the reference curve from the origin point, and acquiring the slope of the common tangent according to the point and the center of the reference error circle; setting the point in the reference curve as the segment point for sectional compensation when the slope of the common tangent is equal to the slope of the reference common tangent; determining the center of the reference error circle point by point along the reference curve from the segment point until the slope of the common tangent is equal to the slope of the reference common tangent within a certain range, sequentially acquiring all the segment points, and obtaining corresponding segment pitch compensation values according to all the segment points; and performing sectional compensation according to the segment pitch compensation values.

The invention discloses a nanoscale high-temperature sintered ceramic abrasive which comprises the following components in percentage by mass: 40-50% of a common abrasive, 2-5% of an additive and the balance of a ceramic bond superhard abrasive, the sum of the components is 100%, and the common abrasive is a mixture of sintered compact corundum, aluminum oxide and brown aluminum oxide which are mixed in equal proportion; the additive comprises the following components in parts by mass: 7-20 parts of titanium calcium aluminate, 3-8 parts of brazing filler metal, 3-15 parts of silicon carbide, 10-20 parts of a binding agent, 2-5 parts of a wetting agent and 1-3 parts of a dispersing agent; 1-3 parts of a curing agent, 8-15 parts of V2O5 sol and 1-4 parts of a sintering additive; the preparation method is simple and easy to implement, and the prepared abrasive is good in binding property with a binding agent and has excellent performance such as good hardness and abrasion resistance.

The invention discloses a grinding fluid special for precision machining ELID of an aluminum-based diamond composite material. The electrolytic capacity of the grinding fluid is improved, and an aluminum matrix and an iron-based grinding wheel in aluminum-based diamond are effectively electrolyzed. Meanwhile, a compact oxidation film can be formed on the grinding wheel and the metal surface, and a machine tool, a workpiece and a cutter are prevented from being corroded. The grinding fluid is high in aluminum-based diamond machining efficiency, low in cost, high in removal rate, good in surface quality of machined workpieces and high in machining precision. Meanwhile, the grinding fluid is green and pollution-free, has no harm to human bodies and the environment, meets the requirement for precise and ultra-precise online electrolytic finishing mirror surface machining of workpieces, and is suitable for precise machining of the aluminum-based diamond composite material.

The invention discloses a diamond grinding wheel with crystal oriented abrasives arranged in order, which is characterized in that the grinding wheel comprises a matrix and an abrasive layer, and the abrasive layer is composed of a large number of honeycomb-shaped micro-grinding units and a large number of intersecting micro-channels; the micro-grinding The cutting unit is composed of amorphous carbon, diamond bonding layer and diamond abrasive grains oriented by multiple crystals; amorphous carbon enables the orientation of abrasive grain crystals, and the top surface of each abrasive grain is a smooth {100} crystal plane, and the sides are uniform It is a high-hardness {111} crystal surface, which enhances the cutting performance and wear resistance of the abrasive grains; the diamond bonding layer connects multiple abrasive grains into one body, which can prevent single abrasive grains from falling off, and the edge height of the abrasive grains can be increased 60%~70% of the height of the micro-grinding unit prolongs the service life of the grinding wheel; a large number of honeycomb-shaped micro-grinding units are arranged in a staggered order, and the gaps form a large number of cross-shaped micro-channels. The structure of the grinding wheel improves the The effective flow rate and chip removal capacity of grinding fluid significantly enhance the grinding performance of the grinding wheel.

The invention discloses a film forming performance regulating and controlling method for large-granularity multi-layer brazing diamond grinding wheel electrolytic oxidation film. An electrolyte spraying device is adopted for accurately controlling spraying of a carbon nano tube containing electrolyte and a carbon nanosphere containing electrolyte in the grinding wheel grinding particle sharpeningstage, and a layer of composite oxidation film with large adhering force and the self-lubrication function can be generated on the surface. In the grinding wheel grinding particle abrasion stage, onlythe carbon nano tube containing electrolyte with the higher electrolysis capability is sprayed, the electrolysis voltage, the electrolysis time and other electrolysis parameters are improved, the thickness of the oxidation film is rapidly increased, abraded grinding particles disengage in time, and the sharpness and the scrap containing space of a large-granularity multi-layer brazing grinding wheel are effectively guaranteed. The film forming performance regulating and controlling method effectively solves the problem about difficult trimming of the large-granularity multi-layer brazing diamond grinding wheel, and the effect that the large-granularity multi-layer brazing diamond grinding wheel can achieve efficient precision machining in the whole grinding process can be achieved as well.

A closed Y-shaped nozzle for ultrahigh-speed grinding has a main body with an inclined primary jet opening having slot shape and an upward secondary jet opening. Said primary has a flexible shielding plate with an open slot and a movable baffle plate for isolating the high-speed airflow in grinding region and allowing the use of low pressure to supply liquid.

A closed Y-shaped nozzle for ultrahigh-speed grinding has a main body with an inclined primary jet opening having slot shape and an upward secondary jet opening. Said primary has a flexible shielding plate with an open slot and a movable baffle plate for isolating the high-speed airflow in grinding region and allowing the use of low pressure to supply liquid.

The invention discloses a ceramic bond grinding tool for oriented arrangement of abrasives and a preparation method thereof. The grinding tool is prepared by the method comprising the following steps: 1) the abrasives, a ceramic bond, a dispersing agent and a solvent are taken for mixing a slurry; 2) the obtained slurry is injected in a mold, and is put in a magnetic field with a strength of 1-50 T for magnetizing to obtain magnetized slurry; and 3) the magnetized slurry is dried and demolded to obtain a biscuit; and the biscuit is sintered and cured to obtain the ceramic bond grinding tool. In the ceramic bond grinding tool for oriented arrangement of abrasives, after the slurry is injected in the mold, the slurry is stood in the high-strength magnetic field; under the effect of electromagnetic force, the abrasives rotate to generate oriented arrangement; the ceramic bond grinding tool for oriented arrangement of abrasives is prepared through the oriented arrangement of the abrasives; an effective cutting edge in the grinding of the grinding tool is added; the grinding capacity of the grinding tool is improved; and the grinding surface quality is improved.

The invention provides a large gear adhesive belt tooth grinding machine, and relates to a large gear machining device. The large gear adhesive belt tooth grinding machine comprises a machine base, a stand column, a rotating working table, a servo motor, a ball screw I and a power head, and is characterized in that the rotating working table is assembled at one end of the upper portion of the machine base, the stand column is assembled at the other end of the upper portion of the machine base, the power head is assembled on the stand column through a swallow-tail-shaped guide rail I, the servo motor is assembled on the stand column and connected with the ball screw I on the power head so as to drive the power head to move up and down along the swallow-tail-shaped guide rail I, and the rotating working table is assembled on the machine base through the guide rail, connected with a rapid oil cylinder on the machine base and driven by the rapid oil cylinder to move leftward and rightward along the guide rail. The large gear adhesive belt tooth grinding machine has the advantages of being novel in structure, easy and convenient to machine, convenient to use, high in grinding efficiency, high in adaptability, high in machined product quality, short in auxiliary time and the like, and therefore the large gear adhesive belt tooth grinding machine is a novel large gear adhesive belt tooth grinding machine which integrates economical efficiency and practicability.

The invention discloses a grinding wheel improving grinding cooling and grinding quality. The thickness of the grinding wheel is larger than or equal to 20 mm. The two end faces of the grinding wheelare each provided with an annular groove. When the diameter of the grinding wheel is larger than 200 mm and smaller than or equal to 500 mm, is larger than 500 mm and smaller than or equal to 600 mm,and is larger than 600 mm, the thickness of the annular grooves is 5-10 mm, 15-20 mm and 25-40 mm correspondingly, and the depth of the annular grooves is 1-2 mm, 2-3 mm and 2-3 mm correspondingly. The circumference between the annular groove in each end face of the grinding wheel and the outer circle surface is provided with a plurality of evenly distributed and eccentric straight grooves which achieving communication of the corresponding annular groove and the outer circle surface, the width of the straight grooves is 2-4 mm, and the depth of the straight grooves is the same as that of the annular grooves. On the end faces of the grinding wheel, the included angle alpha between the connection line of the intersection point of the center axis of the straight grooves and the outside grooveedges of the annular grooves and the center of the grinding wheel, and the center axis of the straight grooves is 10-20 degrees, when the diameter of the grinding wheel is larger than 200 mm and smaller than or equal to 500 mm, is larger than 500 mm and smaller than or equal to 600 mm, and is larger than 600 mm, the included angles of center lines of adjacent straight grooves are 18 degrees, 7.5degrees and 6 degrees correspondingly. According to the grinding wheel, grinding cooling is significantly improved, service life is significantly prolonged, and grinding quality is improved.