47results about How to "Processing state is stable" patented technology

The invention relates to an ultra-precise processing method for the circular conical surface of a fluid static pressure sealing ring for a nuclear primary pump, which belongs to the technical field of precise processing and is characterized in that the sealing ring is clamped in the center of a rotating work table, the radius of a cup-shaped grinding wheel is 75 to 250mm, the distance from the crossing point of the end surface of the cup-shaped grinding wheel and a rotating axis of the cup-shaped grinding wheel to a rotating axis of the rotating work table is 100 to 350mm, according to the principle that the taper error of the surface generated by the grinding is smaller than the given taper tolerance, an inclination angle of the rotating axis of the cup-shaped grinding wheel relative to the rotating axis of the rotating work table and an included angle between the rotating axis of the cup-shaped grinding wheel and a straight line are selected, wherein the straight line passes throughthe crossing point of the end surface of the cup-shaped grinding wheel and the rotating axis of the cup-shaped grinding wheel and is vertically intersected with the rotating axis of the rotating worktable. During grinding, the rotating work table and the cup-shaped grinding wheel do rotating movement, the cup-shaped grinding wheel feeds along the rotating axis of the rotating work table, and thecutting-in grinding is carried out by the end surface of the cup-shaped grinding wheel. The ultra-precise processing method has the effects and benefits that the machine tool structure is simple, andthe high-precise and low-surface-roughness grinding of the circular conical surface of the fluid static pressure sealing ring for the nuclear primary pump can be realized.

A machining method for complex surfaces of liquid hybrid type mechanical seal rings belongs to the technical field of precision machining and is characterized in that a sum of the square of diameter of a cup wheel and the square of medium diameter of a sloped corrugate face is equal to a square of a doubled distance from an intersection of the end face of the wheel and a rotational axis of the wheel to a rotational axis of a rotary worktable, an inclination angle of the wheel is equal to a largest radial outline inclination angle of the sloped corrugate face, rotation of the rotary worktable, reciprocating swing of a swing worktable and periodic following are in linked control when the sloped corrugate face is ground, the end face of the wheel is used for constant micro-feed cut-in grinding in the cutting depth direction of the wheel, the rotary worktable is in constant-speed rotation when a seal dam face is ground, and the end face of the wheel is used for constant micro-speed cut-in grinding in the cutting depth direction of the wheel. The machining method has the advantages that machining high in surface shape precision and low in surface roughness for the complex surface of a hydrodynamic pressure seal ring is achieved, while the hydrodynamic pressure seal ring is composed of a flat circular dam face and a sloped corrugate face which has slight inclined linear radial outline and peripherally and periodically changing inclination.

The invention relates to a designing method of a feeding speed postprocessor used for multi-axis linkage electrosparking. For multi-axis linkage electrosparking machining in which rotary axes are involved, the control object is the relative distance between an electrode and a workpiece, and the unknown radiuses of the rotary axes cause fluctuation of the machining speed. From models of the electrode and the workpiece, the movement coefficients of all movement axes are defined through the rotary radiuses. On the basis, each line of G code movement coefficients are synthesized through a weighted average method to obtain a movement proportionality coefficient, the originally planned feeding speed of each line of G codes is multiplied by the movement proportionality coefficient of the line, and the machining program is updated. Speed fluctuation caused by unmatched dimension can be greatly reduced, the unstable discharging state of movement in which the rotary axes are involved is avoided, the frequency of open circuits and short circuits is reduced, and the electrosparking efficiency is improved.

The invention discloses a complex molded surface grinding method for a three-axis linkage mechanical sealing ring and belongs to the technical field of complex molded surface grinding. The method is characterized in that a workpiece shaft, a cup-shaped grinding wheel, a grinding wheel shaft, a swinging work table, and a linear movement platform are adopted; the workpiece shaft is arranged on the swinging work table; the grinding wheel shaft is arranged on the linear movement platform; the rotation axis of the grinding wheel shaft is perpendicularly intersected with the swinging axis of the swinging work table; and the direction of the rotation axis of the grinding wheel shaft is parallel to the movement direction of the linear movement platform, and crush grinding is performed through the end face of the grinding wheel. When an inclined corrugated surface is ground, the rotary motion of the workpiece shaft, the reciprocating swinging of the swinging work table and the linear movement of the linear movement platform are controlled in a coordinated way. When a dam surface is ground, the rotation axis of the cup-shaped grinding wheel is parallel to that of the workpiece shaft. The method has the advantages that the high-surface shape accuracy and low-surface roughness complex molded surface machining of a fluid dynamic pressure sealing ring consisting of the flat annular dam face and the inclined corrugated surface of which the radial contour is a slightly inclined straight line and the inclined angle changes periodically along the circumferential direction can be realized.

An impedance matching method for a plasma processing device is disclosed. The method comprises the following steps: the impedance matching device is connected between a plasma processing device and a variable frequency power source; the impedance matching method comprises the variable frequency power source, a first variable capacitor, a second variable capacitor and an electric inductor; a resonant frequency scope of the plasma processing device is obtained; the impedance matching device enters a frequency adjusting mode which comprises a plurality of frequency adjusting steps; an output frequency of the variable frequency power source in a next step is obtained; if the output frequency in the next step is not in the resonant frequency scope, loop execution the frequency adjusting steps is carried out till impedance matching is realized; if the output frequency in the next step is in the resonant frequency scope, the frequency adjusting mode is halted, and the impedance matching device enters a capacitance adjusting step; the first variable capacitor is adjusted according to currently detected reflection power signals of the plasma processing device. The impedance matching method for the plasma processing device enables state stability of plasmas, plasma processing quality improvement, and plasma processing state stability.

The invention discloses a precise electrolytic machining process for a multi-tooth turbine blade, and relates to the technical field of electrolytic machining for turbine blades. The precise electrolytic machining process for the multi-tooth turbine blade comprises the steps of preparation for a tool cathode, installation for the tool cathode, electrolytic machining for a bamboo joint hole and the like. According to the invention, the defects of a traditional method are overcome, and under the condition of high voltage, the stability of the machining process can still be guaranteed, so that the electrolytic machining efficiency is increased, and the machining time is shortened; and when the temperature of an electrolyte rises, the flow speed of the electrolyte can be adjusted through an adjusting module so as to accelerate heat dissipation of an electrolytic machining area, so that stable control over the temperature of the electrolyte is achieved.

The invention provides a layered machining technology of laser equipment. The layered machining technology comprises a laser device, a transfer assembly for driving the laser device to perform three-axis operation, and a five-axis convex rotating wheel table positioned below the laser device and used for a product to be placed, wherein a laser head is arranged in the laser device, and the layered machining technology comprises the following steps of S1, framing, specifically, coating a native model of a product needing to be covered with textures obtained through conversion or created by three-dimensional software with a three-dimensional texture style obtained through conversion or created by CAM software, generating framing blocks by utilizing the CAM software, and generating a slice file; S2, machining depth setting, specifically, setting the machining depth according to the requirement of product machining precision, and automatically calculating a framed hierarchical three-dimensional texture file through CAM software; S3, operation; and S4, machining. By means of the layered machining technology of the laser equipment, layered laser machining can be conducted on irregular three-dimensional products, the laser machining quality and machining precision of the products are improved, and large-scale assembly line production can be achieved.

The invention belongs to the technical field of additive manufacturing control, and particularly relates to an adaptive control system architecture for powder-feeding laser additive manufacturing. Thesystem comprises a complete system architecture including process planning, equipment composition, an industrial control system, data acquisition and display, data management, online detection, and PSD control. The adaptive control system can not only significantly improve the forming quality and forming precision of the powder-feeding laser additive, but also can achieve the purposes of increasing the strength of the formed part and reducing the external defects of the formed part.

Provided is an innovative belt-shaped lubricating material for dry wiredrawing which not only can be used under severe wiredrawing processing conditions such as those of high temperature/high pressure/high speed as well as conventional powdered or granular lubricants for dry wiredrawing but also can cope with diameter reduction to a wide range of wire diameters ranging from a small diameter to a large diameter and a wide range of linear speeds ranging from a low speed to a high speed, has excellent functionalities such as lubricity, followability, spreadability, adhesiveness, heat resistance, processability, workability, safety, durability and productivity irrespective of a processed shape, is effective in improving work environments and is friendly to the global environment.

The belt-shaped lubricating material for dry wiredrawing includes a film containing 10 to 90% by weight of a metal salt of a saturated fatty acid and 10 to 90% by weight of a thermoplastic resin.

The invention relates to an efficient machining method for a complex window in a thin-wall carburizing area, and belongs to the technical field of cutting machining. The method comprises the steps that firstly, a small-diameter end mill is adopted to conduct layered removal on a carburized layer from two perpendicular angles of a window, then a drill bit is adopted to conduct drilling removal on four corner positions of the window, and finally a large-diameter end mill is adopted to conduct layered removal on the window.

The invention discloses an embedded groove type clamp spring assembly and a method for drilling hard alloy materials by using the embedded groove type clamp spring assembly. The embedded groove type clamp spring assembly comprises a drilling bit, a top end external member, a rod body piece and a clamp spring positioning piece. The method for drilling hard alloy materials by using the embedded groove type clamp spring assembly comprises the following steps of: step 1, fixing the hard alloy materials; step 2, clamping the embedded groove type clamp spring assembly through a spanner drill chuck; and step 3, drilling the hard alloy materials. The embedded groove type clamp spring assembly and the method for drilling hard alloy materials by using the embedded groove type clamp spring assembly can effectively drill through holes, the appearance of the through holes is complete, the whole machining process is stable, and machining is facilitated.