41results about How to "Large amount of grinding" patented technology

The invention provides a wear resistant cast iron roll collar used for aligning a steel rail and a preparation method, which belong to the technical field of steel rail processing. The prior wear resistant cast iron roll collar used for aligning the steel rail has the defects of easy occurrence of cracks, complicated manufacture process and the like in quenching process. The method is to compound a wear resistant outer layer with a magnesium iron inner layer into an integral roll collar by centrifuge casting, wherein the wear resistant outer layer comprises the following ingredients in weight percentage: 3.0 to 3.4 percent of C, 1.5 to 2.0 percent of Si, 1.2 to 1.6 percent of Mn, 0.2 to 0.4 percent of Nb, 0.03 to 0.06 percent of RE, 0.03 to 0.06 percent of Mg, 2.5 to 3.0 percent of Ni, 0.4 to 0.6 percent of Mo, 0.8 to 1.2 percent of Cu, 1.5 to 1.8 percent of Cr, 1.0 to 1.4 percent of V, 0.03 to 0.08 percent of B, 0.002 to 0.005 percent of Te, 0.01 to 0.03 percent of Ba, less than or equal to 0.06 percent of P, less than 0.03 percent of S, and the balancing being Fe. The invention has the advantages of high hardness of the roll collar, good wear resistance, simple production process and low production cost.

The invention discloses a numerical control full-automatic tooth-profile strength molding grinder, which comprise a grinder body, a working table, a grinding head, a grinding wheel dresser, an automatic feeding mechanism, a grinding head transverse feeding mechanism, a grinding head vertical feeding mechanism, a clamp, a work piece fixed-length feeding device, a medium pressure and large flow cooling and lubricating and high pressure washing pumping station, a precise filter and a numerical control system. In the invention, the grinding wheel dresser is arranged at the back of the working table; when a machine tool is arranged at the position of stop working, the grinding wheel is positioned between the working table and the grinding wheel dresser, and does not touch the work piece and the dresser; when the machine tool is grinding, the grinding wheel moves in working feed forward, and grinds the work piece in strength molding; when the grinding wheel needs dressing, the grinding wheel moves backward and passes through the grinding wheel dresser to finish the dressing and the depth control of the machining dimension, therefore the dimension of the grinding wheel changed by the dressing will not influence the machining precision. The machine tool can finish a full-automatic cycle movement through a four or five-axis numerical control system.

A technology for machining a roller bearing outer ring for a drafting system of a textile machine comprises the machining steps of blank turning, heat treatment, rough grinding of an outer circle, rough grinding of end faces, fine grinding of the outer circle, fine grinding of end faces, final grinding of the outer circle, final grinding of end faces, supergrinding of the outer circle, grinding of a trench, fine grinding of the trench, washing and assembly. According to the technology for machining the roller bearing outer ring for the drafting system of the textile machine, bold exploration and renovation of the process and the structural improvement of a fixture are performed, the optimum technological parameter is selected, and 97% control rate of products can be achieved under the condition that the technological requirement of full-height inner end faces for the external circle perpendicular error is up to 0.005mm.

The invention discloses a ball mill which comprises a stator cylinder body consisting of a bottom surface, an outer-circle cylinder wall and an inner-circle cylinder wall and a rotor cylinder body consisting of a top surface, a rotor cylinder wall, a central post and a connecting shaft, wherein the rotor cylinder wall is arranged between the outer-circle cylinder wall and the inner-circle cylinder wall, the central post is arranged in the inner-circle cylinder wall, an outer-circle grinding cavity is formed between the outer-circle cylinder wall and the rotor cylinder wall, a middle-circle grinding cavity is formed between the rotor cylinder wall and the inner-circle cylinder wall, and an inner-circle grinding cavity is formed between the inner-circle cylinder wall and the central post, so that the ball mill disclosed by the invention is provided with three grinding cavities, and the material enters from a material inlet, and is sequentially ground by the outer-circle grinding cavity, the middle-circle grinding cavity and the inner-circle grinding cavity, screened by a screening device, and discharged outside a material outlet, therefore, compared with the ball mill which is provided with only one grinding cavity, the ball mill is higher in grinding quantity, and higher in grinding efficiency.

The invention provides a tile grinding cooling method and device. Grinding is conducted in a dustproof cover, in the grinding process, cooling gas flows out of the outlet of the bottom end of a transmission shaft in the middle of a grinding wheel, flows out of the grinding wheel along the space between the grinding wheel and a tile surface from the middle of the grinding wheel in a radial mode, and then converges and flows out of an exhaust opening of the lower portion of the dustproof cover; or, the cooling gas flows out from an inner cavity of the dustproof cover to the position, for grinding a tile, of the grinding wheel, and then converges and flows out of the exhaust opening of the lower portion of the dustproof cover after cooling the grinding face of the grinding wheel. Compared with the prior art, the tile grinding cooling method and device have the advantages that the grinding tool does not need to exert large pressure on the tile, the temperature of the grinding tool during grinding can be effectively decreased, and burn marks and scratches are avoided.

The invention relates to a method for grinding metallic workpieces containing, in particular, nickel, whereby a rotationally driven grinding wheel (2) is continuously dressed by a rotationally driven dressing wheel (3) during the grinding of the workpiece (1) by the continual advance (vfrd) of the dressing wheel. In order to increase the grinding capacity, the invention provides that with a dressing advance velocity of 1 to 2 mum per rotation of the grinding wheel and with a circumferential velocity of the grinding wheel (vs) of at least 45 m/s, the advance (table velocity vt) is set such that the rate of metal removal is at least 90 mm<3>/mms.

The invention provides a resin binder grinding tool and a manufacturing method thereof, and belongs to the technical field of machining equipment. The resin binder grinding tool comprises a substrate and a grinding layer. Raw materials of the grinding layer comprise, by weight, 61-66 parts of phenolic resin powder, 0-8 parts of zinc oxide, 0-5 parts of barium sulfate, 0-4 parts of sodium carbonate, 5-9 parts of semi-hydrated gypsum powder, 3-4 parts of white carbon black, 5-10 parts of poly-butyraldehyde, 3-6 parts of zinc stearate, 0-6 parts of zirconium oxide and 4.5-5 parts of diamond. The resin binder grinding tool made from the raw materials is suitable for accurate grinding of tile biscuits.

The invention relates to the field of grinding machining, in particular to special-shaped casting inner surface grinding equipment which comprises a center shaft, a grinding mechanism and an adjusting mechanism, the center shaft extends in the left-right direction, and the center shaft is driven by an external driving element to rotate and feed from right to left; each polishing mechanism comprises two polishing units, when the polishing units rotate along with the center shaft and the diameters of the inner surfaces of the castings are different, the swing amplitudes of swing arms of the two polishing units are different, the adjusting mechanisms enable the mass centers of the polishing units with the large swing amplitudes to be closer to the center shaft, and the acting force of the polishing units on the inner surfaces of the castings is reduced by reducing the centrifugal force of the polishing units. Therefore, the grinding amount of the grinding unit on the inner surface of the casting is reduced; and the adjusting mechanism enables the mass center of the polishing unit with the small swing amplitude to be farther away from the center shaft, the acting force of the polishing unit on the inner surface of the casting is increased by increasing the centrifugal force of the polishing unit, and therefore the grinding amount of the polishing unit on the inner surface of the casting is increased, and the deformation degree of the inner surface of the casting is overall reduced.

The invention discloses a steel rail fat edge grinding device and a steel rail grinding wagon. The grinding device comprises a frame arranged at the bottom of the steel rail grinding wagon, a traction mechanism mounted between the frame and the bottom of the steel rail grinding wagonfor transmitting traction force and driving the steel rail grinding unit to perform grinding operation along a rail, and a steel rail polishing unit mounted on the frame and configured into an end face polishing unit or a cambered surface polishing unit. The end face grinding unit is used for conducting targeted grinding on the fat edge of the inner side of the steel rail, and the cambered surface grinding unit is used for conducting profile enveloping grinding on the steel rail. The technical problems that an existing grinding device is single in strategy, the grinding mode cannot be adjusted according to actual needs, the requirement for large grinding amount cannot be met at the same time, plastic fat edges of the steel rail cannot be removed, and what can be guaranteed is that the profile and the surface roughness of the ground steel rail meet the requirements can be solved.

The invention discloses a grinding method for the roller groove profiles of a chain riveting machine and belongs to the technical field of grinding. The grinding method comprises the steps of (a) driving upper and lower two groups of rollers to rotate by a driving main shaft, (b) selecting an electric grinding machine on which a thin grinding wheel and turning on the electric grinding machine for running, (c) putting the grinding wheel rotating at a high speed to the V-shaped groove of one roller from the left side or the right side of the roller and adjusting the grinding wheel to be flush with one side of the V-shaped groove for grinding according to the angle of the V-shaped groove, and grinding the groove on the other side of the V-shaped groove by use of the same method, (d) repeating the step (c) to grind the V-shaped grooves of the upper and lower two groups of rollers, and (e) fine adjusting the space between the upper and lower two groups of rollers to compensate the quantity of grinding of the roller groove profiles. The grinding method for the roller groove profiles of the chain riveting machine is capable of realizing quick grinding of the roller groove profiles without demounting the rollers, and is good in grinding quality, and meanwhile, simple and easy to operate, and low in quantity of grinding on the rollers; the rollers are durable and a matching error generated by re-mounting after turning removal is avoided.

The present disclosure relates to a motor rotor and an IPM motor. The motor rotor comprises an iron core (110), mounting grooves (111) recessed from the end face of the iron core (110) and magnets (120) embedded in the mounting groove, wherein the mounting groove extends in a direction from the middle portion of the iron core to an outer peripheral surface, the magnets comprise first magnets and second magnets which are arranged at intervals in the extending directions of the mounting grooves, the magnetizing direction of the first magnets is perpendicular to the extending directions of the mounting grooves, the first magnets are fixed to the radial outer sides of the second magnets, and the coercive force of the first magnets is larger than that of the second magnets. According to the invention, the first magnets and the second magnets are arranged at intervals, the mode that the first magnets and the second magnets are combined into a whole through a complex bonding technology with higher cost does not need to be considered, and the problem that the two kinds of magnets combined into a whole are separated due to the fact that a binding agent is softened due to temperature rise in the working process is fundamentally eradicated.