43results about How to "Uniform balance" patented technology

The invention discloses a profiling forging method of a large cylinder forge piece provided with internal and external steps. According to the profiling forging method of the large cylinder forge piece provided with the internal and external steps, raw material consumption and machining allowance can be reduced under the premise that internal quality is guaranteed. The profiling forging method comprises steps as follows: A, tongs hold is performed; B, rolling, drawing and blanking are performed; C, upsetting and punching are performed; D, a common mandrel is subjected to pre-reaming until a step saddle can penetrate into a forging stock; E, step saddle pre-drawing is adopted to enable an inner hole of the forging stock to form the step, an outer contour of the forging stock forms a step cylinder shape, and meanwhile, the length of the forging stock meets the technical processing size; F, the step saddle and a step reaming anvil are adopted for hole reaming forming. With the adoption of the profiling forging method, natural streamline of metal can be prevented from being cut off, so that fibers of the forge piece are continuous, and improvement of synthesized mechanical properties of the forge piece is facilitated.

An electrode for electrolytic grooving of blisks is integrally of a hollow finger-shaped structure. An electrolyte channel is arranged inside the electrode, narrow grooves (1) with the widths of 0.6mm are circumferentially arranged at intervals of 1mm and are positioned at locations distanced from the upper edge of an outer profile close to a finger end of the electrode by 1/3-1/2, an electrolyte delivery pipeline (2) is disposed inside the electrode, a plugging structure (3) is arranged at the finger end so that the electrolyte delivery pipeline (2) is of a blind hole structure, and electrolyte only can flow out from the narrow grooves (1). A machining method for electrolytic grooving of the blisks includes that the electrode for electrolytic grooving of the blisks is used as a special tool, and an anode of a workpiece is dissolved in the electrolyte under the action of an electric field, so that the purpose of performing dimension machining for the workpiece is achieved; and the pressure of the electrolyte ranges from 4MPa to 6MPa, and the allowance reserved on a profile of a blisk body is 3.5mm. The electrode and the machining method have the advantages that the allowance reserved during electrolytic machining is uniform, high precision of repetition can be realized easily, a good flow field is obtained during electrolytic machining, and machining efficiency is high.

The invention discloses a forging process for nuclear power rotor and other large shaft parts, which can be used for effectively solving the forging problem of a high-grade rotor with a super large specification. The process specifically comprises the following steps of: (1) drawing out a steel ingot to form a flat square by using a WHF (Wide die Heavy blow Forging) method; (2) performing erecting and upsetting on the flat square; (3) drawing out the upset steel billet to the flat square again by using the WHF method; and (4) compacting the four sides and the center of the flat square, wherein the 'flat square' specifically means a cuboid-shaped steel billet. In accordance with the result of flaw detection (UT(Ultrasonic Test) and MT (Magnetic particle Test)), no flaw (phi is above 0.6), for which recording is required, is found in a 1100MW rotor piece manufactured by using 550t steel billets, and the quality is superior; based on the dimension of a workpiece, all the dimensions of various parts of a forge piece can meet the processing requirement, and the forging allowance is uniform; the control state of forging grain size is deduced from a UT state subsequent to thermal treatment after forging, the desired effect is completely achieved, and no phenomenon of coarse crystal or mixed crystal happens.

In an image generation unit, a light emitting part is formed using a self-emitting OLED device, and thereby, high-contrast images can be formed and the life of the light emitting part and the life of the virtual image display apparatus are extended. Even when the light emitted in the light emitting part has deviation in color balance, a half-mirror layer that has light transmissivity and realizes see-through vision is a reflection film having wavelength dependence, and thereby, a uniform color balance of image lights is achieved and images in good conditions are visually recognized.

The invention discloses a fitting method of blade surface data. The method comprises the steps of the fixing of centers and radiuses of intake and exhaust sides, the fixing of arcs in polynomial fitting blade body surface and blade surface, and the fixing of the maximum thickness value of the blade body surface. According to the method,The repeated computing amount and the computing time of designers are greatly reduced, the computation of the blade surface data is enabled to be accomplished in seconds, the whole bade development time is shortened by one third, the data accuracy and the jig design accuracy of blade surfaces are improved, the precision forging technology is improved, and the requirements of modern digital machining equipment are met. Blades machined through the fitting method is smooth in solid surfaces, the phenomenon of back which usually occurs in traditional blade bodies manually adjusted can not occur, the blade body profile line of a blade forge piece designed on the basis of the surface is smooth, a final die cavity is not required to be repeatedly repaired, and the forming quality of the blade forge piece is improved.

The invention discloses an automatic panel replacing and machining machine which comprises a rack, a material box, four-face halving clamps, machine heads and turnover mechanisms. The rack comprises a horizontal seat frame and a vertical frame, and a sliding work platform is assembled on the horizontal seat frame. The material box is arranged at the front end of the work platform and provided with stacking sorting cavities. The four-face halving clamps are assembled on the work platform and at the rear end of the material box, each four-face halving clamp comprises an absorption structure, four halving blocks and a four-face drive assembly, and a containing cavity is defined by the four halving blocks of each four-face halving clamp together. The machine heads are assembled on the vertical frame and above the positions corresponding to the four-face halving clamps, and the machine heads slide in the vertical direction and left-right direction of the horizontal seat frame. The turnover mechanisms are arranged on the machine heads and comprise turnover drive assemblies and vacuum nozzles right opposite to a panel on the material box, the turnover drive assemblies drive the vacuum nozzles to turn over so that the panel between the material box and the containing cavities can be transferred through the vacuum nozzles, and the aim of automatic panel replacing and machining is achieved.

The invention relates to the technical field of machining, in particular to a processing method of a titanium alloy TA15 thin-wall long boss. The processing method particularly comprises the followingsteps: removing the margin of a middle arm, removing the margin of the right side of the boss, removing the margin of the left side of the boss, finish-milling the middle arc, finish-milling the right side of the boss and finish-milling the left side of the boss. The processing method is mainly applied to milling of an axial long boss of the new generation aero-engine titanium alloy TA15 material, the adverse effects of machining deformation of thin part structure wall and long axial size in the processing process of thin-wall guide pipe parts are avoided, the technical bottlenecks of programming of milling processing numerical control program and determination of milling processing process parameters are overcome, and the shape and the size precision requirements of the titanium alloy TA15 material thin-wall long boss parts are guaranteed effectively.

The invention discloses automatic panel replacing and machining equipment which comprises a rack, material boxes, four-face halving clamps, machine heads, a sheet-by-sheet conveying mechanism and a transfer mechanism. The rack comprises a horizontal seat frame and a vertical frame. The material boxes are arranged on the horizontal seat frame and provided with stacking sorting cavities. The sheet-by-sheet conveying mechanism is arranged on the horizontal seat frame and arranged adjacent to the material boxes, and is provided with a stacking cavity and a pushing assembly. The four-face halving clamps are assembled on the horizontal seat frame and arranged adjacent to the material boxes, so that a panel is halved and clamped. The transfer mechanism is responsible for conveying the panel conveyed by the pushing assembly to the four-face halving clamps, and responsible for conveying the panel at the four-face halving clamps into the stacking sorting cavities in the material boxes. The machine heads are suspended above the positions corresponding to the four-face halving clamps, the machine heads slide in the vertical direction, the left-right direction and the front-back direction of the horizontal seat frame to machine the panel halved and clamped by the four-face halving clamps, and the aim of automatic panel replacing and machining is achieved.

The invention discloses a machining method for a sealing tape of a valve seat ring of a cylinder cover. The method comprises the steps: firstly roughly machining the bottom surface of the cylinder cover; roughly machining a positioning pin hole on the bottom surface of the cylinder cover; taking the positioning pin hole roughly machined on the bottom surface as reference to machine a closed plug hole on the cylinder cover as middle reference; taking the closed plug hole as the machining reference to finely machine a valve guide pipe bottom hole, a valve seat ring bottom hole, a bottom-surface positioning pin hole and the bottom surface of the cylinder cover on the same set of fixture of the same equipment to the final sizes; pressing the valve guide pipe and the valve seat ring; and finally taking the bottom-surface positioning pin hole and the bottom surface of the cylinder cover as the machining reference to machine an inner hole of the valve guide pipe and the sealing tape of an inner hole of the valve seat ring. The bottom holes of the inner hole of the valve guide pipe and the sealing tape of the inner hole of the valve seat ring are machined at the same time by using the machining references, the allowance for continued machining is uniform, and the coaxiality of the sealing tape of the valve seat ring relative to the inner hole of the valve guide pipe meets the process requirements.

The invention discloses a direct-driven zero-drive complete-numerical-control spline shaft milling machine. The direct-driven zero-drive complete-numerical-control spline shaft milling machine comprises a transmission system, a numerical control system, a structural system, and matched devices; the transmission system is composed of six servo axes, including axis A, axis B, axis C, axis X, axis Y, and axis Z, and complete-numerical-control operation is realized; one end of a milling machine body is provided with a workpiece main spindle box, and the other end is provided with a tailstock box; the middle part of the milling machine body is provided with a cutter spindle housing used for driving hobbing cutters to rotate; the milling machine body is provided with a translation device used for translation along X, Y, and Z axis directions; the X, Y, and Z axes are arranged to be vertical to each other in the space; the X axis is arranged along the front-back direction, the Y axis is arranged along the upper-lower direction, and the Z axis is arranged along the left-right direction; an infrared ray tool setting gauge is arranged in front of the milling machine body. According to the direct-driven zero-drive complete-numerical-control spline shaft milling machine, a direct-driven zero-drive mode is adopted, accumulative error and division error are avoided completely; processing accuracy is high; high-speed high-efficiency operation is realized via a full closed-loop numerical control system; dry cutting processing and secondary hobbing can be realized; and product surface quality is excellent.