30results about How to "Processing size is large" patented technology

The invention discloses a processing technology of a robot RV speed reducer needle gear shell, and belongs to the technical field of robot RV speed reducer processing. The processing technology includes the steps that precise casting or forging is carried out on a needle gear shell blank; the needle gear shell blank is clamped after the surface of the needle gear shell blank is machined, and the rotation center of the needle gear shell blank is taken as a positioning reference; the end face of the needle gear shell blank, a bearing position of a roller pin bearing and bearing positions of two main bearings are machined; finish machining is carried out on the inner surface of the roller pin bearing according to the positioning reference; finish machining is carried out on a roller pin groove in line contact with a roller pin of the roller pin bearing according to the positioning reference; inner grooves are simultaneously machined in the bearing positions of the two main bearings in a finish machining mode according to the positioning reference; finish machining is carried out on the outer surface of the needle gear blank. The needle gear shell machined according to the steps improves machining precision and the parallelism degree of the bearing positions of the main bearings, guarantees coaxiality, the position degree and cylindricity of the main bearings after installation, achieves one-time clamping, can meet requirements of multiple process parameters, improves machining precision and installation precision of the needle gear shell, reduces accumulated errors, meets the high-precision requirements, and prolongs service life.

The invention discloses an integrated machining method of a planet carrier of a robot RV reducer, and belongs to the technical field of robot RV reducer machining. The method comprises the steps as follows: forging a first casing and a second casing, and performing hot extrusion on the first casing and the second casing respectively; performing thermal refining; performing tempering; performing finish machining on end surfaces respectively; connecting the first casing with the second casing to be clamped to a clamp, and performing finish machining on inner holes formed in the first casing and the second casing with a center of gyration serving as a locating basis; performing finish machining on outer surface with the locating basis; directly machining inner rings of rolling bearings on the first casing and the second casing; accurately grinding an outer track on each inner ring simultaneously; and performing finish machining bearing positions of three tapered roller bearings on the first casing and the second casing with the location reference, and directly machining outer rings of the tapered roller bearings. With the adoption of the method, the mounting accuracy, the manufacturing accuracy and the transmission accuracy are ensured, the requirement for high accuracy is met, the service life is prolonged, machining and assembling errors and accumulative errors are reduced, the output torque is increased, and the machining cost is effectively reduced.

The invention relates to a batch-type grinding method of a hard coating material, comprising the following steps: carrying out alternate batch-type grinding by adopting a grinding wheel feeding way and a grinding wheel no-feeding way in the grinding process; when the grinding wheel feeding way is adopted, carrying out high-speed or ultra high-speed grinding; when the grinding wheel no-feeding wayis adopted, carrying out no-load reciprocatory grinding; and after every time of feed grinding of a grinding wheel, carrying out the no-load reciprocatory grinding for 2-20 times according to the actual condition; wherein the high-speed or ultra high-speed grinding comprises that the primary feed grinding depth is 10-15mu m, the feeding speed of an operating platform is 6000-30000mm/min, and the linear speed of the grinding wheel is 80-200m/s. In the invention, variation of the actual grinding depth caused by elastic deformation and heat deformation of the grinding wheel and workpieces can beeliminated to the utmost extent, the heat produced at high-speed grinding can be timely released, and the grinding wheel can maintain to be sharp, thus the material removing rate is improved, the grinding surface burning is effectively reduced, the grinding wheel loss and production cost are greatly reduced, and the good processing quality is obtained.

The invention relates to a method for producing eccentric concrete post mould, wherein it comprises that: first, preparing needed elements as tube wall, longitudinal bar, annular bar, bolt, end plate, etc; then connecting and welding said elements; at least, finely processing half steel mould and whole mould, and turning integrity, to obtain the final product. The matched board and tube wall are cold drawn to fine size via cold drawer and mould, to save material and improve quality; the end plate and rolling wheel are made from plate bended by compressor to save steel.

The invention discloses a 3D printing system for dynamic imaging and a printing method thereof and belongs to the technical field of 3D printing. The printing method comprises the following steps of taking a spatial light modulator as a dynamic pattern generation apparatus; carrying out beam collimation and shaping by an exposure light source through an illuminating system; radiating the surface of the spatial light modulator to radiate the dynamic pattern on the surface of the spatial light modulator to the surface of a two-dimensional displacement platform through a projecting exposure objective; matching continuous loading of the dynamic pattern and scanning movement of the two-dimensional displacement platform synchronously; and further controlling the position of a focal face of a projecting lens for scan exposure layer by layer to achieve high precision, large area and dynamic imaging 3D printing. The system solves the problem that high precision and large area cannot be considered at the same time in a conventional 3D printing process, achieves joint-free high precision 3D printing of a meter-scale structure, and can be widely applied to various industrial manufacturing demands.

The invention discloses a method for preparing quartz glass millimeter-scale deep micropores by using a femtosecond laser filament effect. The method comprises the following steps that a quartz glasssample is cleaned, an optical path is built, the optical path includes a femtosecond laser, the femtosecond laser outputs a light beam with circular section to pass through a reflector, a beam splitter prism and a shutter, a circular light spot laser beam is focused through a large-focal-length plano-convex lens to obtain the condition that a femtosecond laser filament vertically irradiates on a processing station of a movable objective table, the femtosecond laser device, the shutter and the movable objective table are connected with a computer, and the computer is used for adjusting the femtosecond laser device to output different laser parameters to control the length and the action time of the femtosecond laser filaments; and the quartz glass sample is fixed to a processing station ofthe movable objective table, through femtosecond laser irradiation, the computer is used for controlling the movable objective table to move in the vertical directionto change the defocusing amount soas to change the position of the light filament in a material, and finally deep micropores are obtained. The method is simple to operate and high in processing efficiency, and a complex post-treatment process is not needed.

The invention discloses a multilayer coupling structure for photon chip mode field conversion, the lower layer in the coupling structure is a conical structure, the upper layer is an optical waveguide structure with a large size, and a light beam transmitted in the lower layer conical structure is gradually transferred to the upper layer optical waveguide structure for transmission. High-efficiency light beam transmission between the photon chip and the optical fiber is achieved, and the advantages of being low in coupling loss and easy to prepare are achieved. The invention further discloses a structure preparation method based on the chemical mechanical polishing method. The structure preparation method has the advantages of being low in cost, high in machining efficiency, simple in process, high in yield and the like.

The invention discloses an automatic radial feeding tool rest for an end face boring lathe. The tool rest comprises a toolbar, a tool rest body and a tool bit, wherein the tool rest body is arranged on the toolbar; an automatic radial feeding structure is arranged between the tool rest body and the tool bit, and comprises a screw rod, a sliding seat, and a ratchet mechanism and a gear set, which are arranged on the tool rest body and used for driving the screw rod to rotate; the tool bit is arranged at one end of the sliding seat; the other end of the sliding seat is matched with the screw rod through a nut seat on the sliding seat. According to the tool rest, the tool bit can be automatically and radially fed without manual operation, so that the labor intensity of a worker is reduced, the machining efficiency is improved, and the range of a machining size is widened.

The invention provides a processing method of a drop cake-shaped bounce large-size super-hydrophobic cone column array. The processing method comprises the following steps: processing a preparation mold: setting a nanosecond laser processing parameter, processing cone hole array molds with the diameter being 180 to 1260 microns, the separation distance being less than or equal to 290 microns and the height being 500 to 2000 microns on a metal base plate, etching, cleaning and blow-drying to obtain a pouring mold; performing curing treatment and directly demolding to obtain a polymer cone column array; and performing low surface energy modification on the obtained polymer cone column array by adopting a fluoro-alkyl silane or stearic acid solution to obtain the super-hydrophobic cone columnarray. The method has the advantages that the method is simple, easy to operate and low in cost; materials and templates can be reused; the prepared cone column array is large in size and wide in range and has stable super-hydrophobic property; and the prepared super-hydrophobic cone column array can enable the liquid-solid contact time to be reduced by 60 percent and can effectively drop cake-shaped bounce and prevent the occurrence of an icing phenomenon.

The invention provides a preparation method of a high-specific-stiffness aluminum silicon carbide structural part. Silicon carbide particles and silicon carbide whiskers are mixed according to a proportion, and a certain quantity of the silicon carbide whiskers is added into the silicon carbide particles, so that the strength and toughness of a silicon carbide green body are effectively improved; an aluminum silicon carbide composite material casting formed after a prefabricated part containing the silicon carbide whiskers is infiltrated into an aluminum alloy solution has high specific stiffness, specific strength and wear resistance; and through the method of adding mixed powder into a preheated mold, and carrying out stacking, jolt ramming and aluminum filling, the two working procedures of pressing and sintering forming for the silicon carbide prefabricated part are reduced, the process of powder filling and aluminum filling is adopted and is not limited by the product structure, the machining size is increased, a high-volume aluminum silicon carbide machining working procedure is avoided, the process flow is simplified, the productivity is improved, the cost is reduced, the yield is increased, and the production period is shortened. The invention further provides a high-specific-stiffness aluminum silicon carbide structural part which is compact, excellent in performance and wide in application range.

The invention discloses a rotary ultraviolet exposure machine. The rotary ultraviolet exposure machine comprises a conveyer table, a coating machine and an exposure machine, wherein the coating machine is located on one side of the coating machine, the conveyer table sequentially penetrates through the coating machine and the exposure machine, and an ultraviolet light source generator is arrangedat the top of the exposure machine; an exposure cavity is formed in the middle of the exposure machine, a rotary exposer is arranged on the exposure cavity and is connected to the ultraviolet light source generator through a light source; a first base crossbeam and a second base crossbeam are mounted on the lower surface of the conveyer table, and the first base crossbeam is arranged on a coatingquakeproof base below the coating machine; and the second base crossbeam is arranged on an exposure quakeproof base below the exposure machine. The rotary ultraviolet exposure machine has the characteristics that an exposure mask plate is not required, the machining speed is high, the machining efficiency is high, the machining size is large, and the machining compatibility is strong.

The invention discloses a hard alloy hole boring cutter, which mainly comprises a cutter body, a cutter slice, a cutter pressing screw, a positioning screw and a pressing plate, wherein a cylindrical hole is formed in one end head of the cutter body; the cutter pressing screw is formed by a cylindrical segment, a conical segment and a screw segment with a screw thread; the screw segment of the cutter pressing screw is connected to the cutter body through the cylindrical hole; the cutter slice is tightly propped against the conical segment of the cutter pressing screw; when the cutter pressing screw is screwed in, the cutter slice tightly propped against the conical segment extends outwards; and the cutter slice is fastened by tightening the positioning screw through the pressing plate. When the cutter pressing screw is screwed out, the cutter slice tightly propped against the conical segment contracts to the center, so that the machining size is reduced; and when the positioning screw is screwed in, the cutter slice tightly propped against the conical segment extends outwards, so that the machining size is enlarged; and the hole boring cutter can work on a presetter, so that the auxiliary time of replacement and regulation of the cutter is reduced and the production efficiency is improved greatly. In addition, the hard alloy hole boring cutter also has the advantages of good machining quality, reduction in production cost and high economic benefit.

The invention belongs to the field of titanium alloys and discloses a graphene oxide enhanced titanium alloy and a preparation method thereof. The graphene oxide enhanced titanium alloy comprises thefollowing components in percent by weight: 0.10-0.30% of magnesium, 0.45-0.50% of graphene oxide and the balance titanium and inevitable impurities. The preparation method comprises the following steps of selecting magnesium, graphene oxide and titanium to smelt to obtain a casting blank; annealing the casting blank at 910-960 DEG C; forging the annealed casting blank into a bar at 800-960 DEG C;and carrying out aging treatment on the bar at 700-800 DEG C and insulting the bar for 1-2 hours. By making full use of solution strengthening action of Mg and neutral stability action of Mg on alphaphase and beta phase, the preparation method is simple in process and good in processing performance. The ductility of the prepared graphene oxide enhanced titanium alloy is not reduced or even is improved while the prepared graphene oxide enhanced titanium alloy is high in strength, so that a titanium alloy material has excellent strength and plasticity and can be processed into products with larger dimensions.