37results about How to "Guaranteed roughness requirements" patented technology

The invention discloses a lifter bore drilling cutter assembly and a lifter bore machining method. The cutter assembly comprises an internal-cooled pilot step drill bit and a heavy-metal hot shrink-fit shank. The internal-cooled pilot step drill bit is of a step structure with internal cooling holes and specifically comprises a core bit, an expanding section, a chamfering section and a drill bit shank, wherein the diameter of the core bit is the smallest to enable the core bit to avoid cross main oil passage holes when the core bit drills the bottom hole of the lifter bore; the internal cooling holes are formed in the end part of the core bit; the expanding section is close to the core bit; the chamfering section is connected with the expanding section; and the internal-cooled pilot step drill bit is installed on the heavy-metal hot shrink-fit shank through the drill bit shank. By machining the bottom hole of the lifter bore through the heavy-metal hot shrink-fit shank in cooperation with internal-cooled pilot step drill bit, the problems that the cutter is unevenly stressed and the elliptical aperture is apt to occur during the machining of offset cross lifter bores are well solved. In addition, by using a diamond honing reamer to hone and ream the lifter hole, the requirement on the roughness of the lifter hole is satisfied and the durability of the cutter is improved.

The invention relates to a processing technology for the impeller cover of the shaft seal main pump of a nuclear power plant. After the impeller cover blank (1) is placed on the lathe workbench (2) for alignment, the impeller cover blank (1) is fixed with the claws (3) of the workbench ), turning the upper position (4) of the inner and outer circles of the impeller cover blank (1); place the tire (5) on the lathe workbench (2) for alignment, and fix the tire (5) with the workbench claws (3) ), turn the impeller cover (7) into the seam (6) of the tire (5), put the threaded tie rod (9) at both ends into the threaded hole (27) of the lathe table (2) . The thin-walled position of the impeller cover turned by the process method of the present invention will not be deformed, and the lock plate groove is very stable when processing the lock plate groove, so that the lock plate groove can obtain a very high position degree and surface roughness, which solves the problem that manual tools cannot process the lock plate groove. Meet the precision requirements, greatly improve the production capacity and economic benefits of the enterprise and process efficiency.

The invention discloses a surface treatment method of an anti-wear ring of a cylinder sleeve. The surface treatment method comprises steps as follows: 1) a formed anti-wear ring of the cylinder sleeveis pretreated, and pretreatment means phosphorization processing; 2) the pretreated anti-wear ring of the cylinder sleeve is subjected laser surface strengthening, wherein the treatment parts comprise an inner hole and a cutting edge of the anti-wear ring; 3) the treated anti-wear ring of the cylinder sleeve is polished; 4) checking and packaging are performed. By means of the surface treatment method, the problems of wear resistance, corrosion resistance, hardness and the like of the anti-wear ring of the cylinder sleeve can be effectively solved, the anti-wear ring of the cylinder sleeve can be used for a long time, and high-frequency replacement and unnecessary waste are avoided; besides, wear of the cylinder sleeve can also be reduced, engine oil is prevented from moving upwards intoa combustion chamber, consumption of the engine oil is reduced, fuel gas leakage is reduced, granularity emission is reduced, the sealing property is improved, and power of an engine is increased.

The invention relates to a micro-groove structure processing tool and method at the outlet end of an inner plug of an engine injector. The method is as follows: designing a clamping tool that is convenient for clamping of a wire cutting machine tool and can ensure accurate positioning of the inner plug parts, and then the wire cutting equipment is precisely located. Clamp it on the inner bolt of the tooling, then precisely align the initial position of the electrode wire according to the position of the micro-groove structure to be processed, then set the electric machining parameters to process the first pair of micro-groove structures, and finally repeat the precision when processing the subsequent micro-groove structures. Find out. The tooling includes a cylindrical alignment part, and there are bosses on both sides of the alignment part. The boss on one side is recorded as the clamping part, which is used to clamp the wire cutting equipment, and the boss on the other side is recorded as the positioning part. The outer surface of the positioning part is closely matched with the central concave hole of the mounting flange, the clamping part, the alignment part and the positioning part are coaxial, and the bottom surface of the alignment part is perpendicular to the cylindrical surface of the clamping part. The invention solves the processing problem required by the high precision of the outlet structure of the inner plug in the injector.

The invention discloses a method for machining a perpendicularity gauge. A process for machining a movable gauge by the method includes 1), material preparation; 2), a lathing procedure implemented by lathe operators for lathing an outer circle and an inner hole and forming protective tables at two ends of the movable gauge; 3), a heat treatment procedure; 4), a sand blowing procedure; 5), a surface treatment procedure; 6), an inner hole grinding procedure; 7), an artificial aging procedure; 8), inner hole grinding; 9), a procedure for lathing off the protective tables at the two ends of the movable gauge; 10), a procedure for grinding two end surfaces of the movable gauge; 11), polishing sharp edges of a working portion of the movable gauge. The method has the advantages that the working step for forming the protective tables and the working procedure for lathing off the protective tables are added to the method, and forming ranges of flared openings are included within ranges of the protective tables, so that the problem that flared openings are formed at two ends of an existing movable gauge is effectively solved.

The invention provides a non-spherical surface element shaping and processing method by using a numerical control tangent revolution method and a device thereof, and relates to an optical element processing technique. The processing method and the device can always conduct the tangent point processing for the meridional profile curve of any designed and given axisymmetrical non-spherical surface (including higher order and quadric spherical surface) and spherical surface element, so as to obtain a theoretical continuous smooth high precision surface without corrugation. The tangent point processing of the non-spherical surface is realized through the rotation of a workpiece and an abrasive wheel, and the numerical control linkage of an oscillating shaft, a workpiece shat and an abrasive axle. The tangent point processing of the spherical surface is realized through the rotation of the workpiece and the abrasive wheel, the oscillation of the oscillating shaft and the fixation of the abrasive axle at a certain distance. The processing technique has the advantages of good commonality, high precision and processing efficiency, easily ensured surface roughness and surface texture, low processing cost and the like.

The invention provides a steel rolling motor shaft shoulder end face movable turning device. The steel rolling motor shaft shoulder end face movable turning device comprises a transverse feeding device and a longitudinal feeding device; the straight line between the point of a turning tool and the center of a motor shaft is regulated to parallel to the axis line of a lead screw II, so that a motor rotates, steel rolling motor shaft shoulder end face turning can be realized on working site, time, labor and cost are saved, and the flatness and the roughness of the technical requirements can be ensured; and because the steel rolling motor shaft shoulder end face movable turning device is movably arranged on the plane of a bearing seat and a bottom plate is fixed by using screw holes in the plane of the bearing seat, the device is convenient for disassembly and assembly.

The invention relates to process equipment for precisely machining a thin-wall aluminum alloy cone and a machining process thereof. The process equipment comprises a worktable; a clamping jaw is mounted on the worktable; a process ring matched with the clamping jaw is mounted on the clamping jaw, and is coated with a workpiece; and the internal of the workpiece is pressed through a pressing cone ring. The process equipment is compact and reasonable in structure and convenient for operation; and the equipment and the process can conveniently finish machining of the aluminum alloy cone, are suitable for batch production, are convenient for clamping, prevent deformation caused by clamping force, guarantee the machining precision, increase the contact area, reduce vibration of the thin-wall workpiece, guarantee the roughness requirement, once mold all surfaces, and prevent cutter joint marks and repeated clamping.

The invention discloses a wheel groove broach layered multi-tool tooth groove rough / finish-milling method. The method comprises a wheel groove broach rough-milling tooth groove machining step and a finish-milling tooth groove machining step, wherein the rough-milling tooth groove machining step comprises four steps of rough-milling machining programs; the first step of rough-milling machining program adopts three-tool machining and sequentially performs rough-milling on the middle, the toothed back and the toothed rake angle of the wheel groove broach; the second step of rough-milling machining program adopts two-tool machining and sequentially performs rough-milling on the toothed back and the toothed rake angle of the broach; the third step of rough-milling machining program adopts two-tool machining and sequentially performs rough-milling on the toothed back and the toothed rake angle of the broach; the fourth step of rough-milling machining program adopts one-tool machining and sequentially performs rough-milling on the middle of the broach; and the finish-milling tooth groove machining step performs finish-milling on the tooth groove twice, namely sequentially performing finish-milling on the toothed back of the tooth groove and performing finish-milling on the toothed rake angle of the tooth groove. The method has the advantages of high precision, high efficiency, low cost and the like and is particularly suitable for a large-pitch large-groove depth wheel groove broach.

The invention relates to the field of turning processing of dust-proof grooves on workpieces, in particular to a processing method for controlling dust-proof grooves with angles. Through the turning tool, first process the bottom end surface of the dustproof groove, then process the curvature radius R of the bottom groove of the dustproof groove and the groove angle β of the dustproof cover, and finally process the rib width hL of the dustproof cover. The present invention starts from optimizing the process of machining the dust-proof tank, ensures the dimensional accuracy and surface roughness required by the process of the dust-proof tank, strengthens the detection of the processing process, and controls the product quality to ensure the qualified rate of the dust-proof tank after capping.

The invention relates to an inlay type combined die structure comprising a die sleeve, wherein a back pad is arranged in the die sleeve; a die body is arrange on the back pad in the die sleeve; a forming groove is arranged on the die body; an inlaid piece slot is arranged in the forming groove; an inlaid piece is arranged in the inlaid piece slot; the upper forming surface of the forming groove is shaped like an arc; the inlaid piece is of a + shape or a linear shape or a +- shape; the inlaid piece slot is a through hole on the die body; the die body is made from a material with good toughness; and the inlaid piece is made from an abrasion-proof material. By adopting the structure, the inlay type is adopted to replace an integral type, so that stress concentration is avoided and the phenomenon that root is easy to break off does not happen; the mold is processed by adopting wire cutting, so that the processing is easy, the polishing can be carried out, the roughness requirement of the mold can be guaranteed, the service life of the mold is prolonged and the factory cost of products is reduced.

The invention discloses a chute machining method for the inner wall face of a case of an aero-engine. The method comprises the following steps that a, a five-axis numerical control machine tool is selected as machining equipment; b, the tool assembly manner is improved, a through-connection angle head is used for carrying out through connection on a tool on a machine tool spindle, and the machine tool spindle stretching into the case in the axial direction of the case and the tool for machining the inner wall face of the case in the radial direction of the case are formed; c, the tool is selected, the diameter of a handle of the tool ranges from phi6 to phi10, the diameter of a cutting part ranges from phi4 to phi7, the length-diameter ratio of the tool ranges from 1:7 to 1:10, and therefore tool vibration brought by through connection of the tool in the machining process is reduced; d, a chute machining process path is selected, and a circulation machining manner is adopted so as to guarantee the surface roughness of chutes and improve the machining efficiency; and e, all chute design positions on the inner wall face of the case are machined, and the formed case is obtained. The requirements for the sizes and the roughness of the chutes are guaranteed; and tool consumption is greatly reduced, and the machining cost is reduced.

The invention relates to a method for machining a steel ball sealing conical surface. A hole of the required depth is machined through a drill with a 70-degree conical angle, a conical surface of the required angle is machined through a drill with a 60-degree conical angle, the drill with the 60-degree conical angle is coaxial with the hole machined the first time, and depths of the holes manufactured the two times are identical. According to the method, cutters with different conical angles are used for machining the required steel ball sealing conical surface, so that the required size and roughness of the steel ball sealing conical surface are guaranteed, the operation is simple, large-batch production requirements of enterprises are met under the condition of meeting technical requirements, and costs are saved for enterprises.

The invention discloses an auxiliary mechanism for a return plate of an axial piston pump, relates to the technical field of axial piston pumps, and comprises a wear-resistant plate, a plurality of wear-resistant guard plates and a plurality of connecting components. The wear-resistant plate includes an annular plate and multiple Two ear-shaped protruding plates arranged circumferentially along the outer edge of the annular plate, a wear-resistant guard plate is arranged below each ear-shaped protruding plate, and a connecting component is used to connect a wear-resistant guard plate and an ear-shaped protruding plate, The connection assembly is used to fix the wear-resistant plate and the wear-resistant plate on the end cover. The wear-resistant plate includes an arc-shaped main plate and an arc-shaped support plate arranged at the inner lower part of the arc-shaped main plate, the wear-resistant plate and the wear-resistant guard The return disc is placed between the plates, the arc-shaped support plate is used for supporting the return disc, and the inner side of the arc-shaped main plate is used for positioning the return disc. The auxiliary mechanism of the return plate of the axial plunger pump provided by the present invention can ensure the oil film gap of the sliding shoe pair, can ensure the reliable return of the plunger, and can save maintenance costs in the later stage.