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418results about How to "Increased processing flexibility" patented technology

Knowledge graph management method and system based on semantic space mapping

The invention belongs to the technical field of text semantic processing and semantic webs, and particularly relates to a knowledge graph management method and system based on semantic space mapping. The method comprises the steps of semantic vector construction, semantic space mapping and knowledge graph management, wherein the step of knowledge graph management comprises three sub-steps of semantic clustering, semantic duplication eliminating and semantic annotation. A text unit describing edge / nodal points of a knowledge graph is projected to a semantic space, and vector representation of the edge / nodal points on the semantic space is obtained by vector accumulation; on the basis, multiple management tasks of the knowledge graph are achieved. The system correspondingly comprises a semantic vector construction module, a semantic space mapping module and a knowledge graph management module. The defects that a conventional knowledge graph management method is sensitive to factors such as word deformation, synonym variation and grammatical form variation are overcome, the situation of difference of the number of words can be easily handled in a vector accumulation mode, and further knowledge graph management tasks such as semantic clustering, semantic duplication eliminating and semantic annotation are easily achieved.
Owner:FUDAN UNIV

Small-sized five-axis machining center

The invention relates to a small-sized five-axis machining center which comprises a base structure (1), an XYZ vertical shaft structure (2) and a BC rotary table (3). The small-size five-axis machining center is characterized in that the base structure (1) is L-shaped and comprises an X-axis substrate (1-2) and an internally hollow machine tool base (1-1); the X-axis substrate (1-2) is arranged on the machine tool base (1-1) and the X-axis substrate and the machine tool base are of integral structures or fixation connection molding structures; an X-axis ball screw (1-3), a Y-axis ball screw (2-6), a Z-axis ball screw (2-4), two X-axis guide tracks (1-4), two Y-axis guide tracks (2-7) and two Z-axis guide tracks (2-5) are arranged on the X-axis substrate (1-2); the BC rotary table (3) is arranged on a table plate of the machine tool base (1-1) and is arranged beside the positive plane of the X-axis substrate (1-2); a funnel-shaped structure chip discharge port (1-5) is arranged on the table plane of the machine tool base (1-1); and a connecting hole (1-6) of the BC rotary table (3) is arranged at the positive plane of the X-axis substrate (1-2). The small-sized five-axis machining center has the characteristics of being convenient to operate, high in production efficiency, low in cost and attractive and harmonious.
Owner:广州市技师学院

Wire-width-variable laser galvanometer scanning quick etching method and device

The invention discloses a wire-width-variable laser galvanometer scanning quick etching method and device. The principle that after laser beam is defocused, the power density gradient becomes small, and a light spot becomes large is used, a high-speed galvanometer scanning error accurate correcting method is used, by setting different focusing and defocusing laser processing distances and corresponding power parameters and laser galvanometer scanning parameters, the size of the laser light spot is controlled, large light spot raster scanning filling after defocusing is carried out is on an image filling zone, and then an image contour is subjected to vector scanning drawing. For different working distances, galvanometer scanning error correcting is carried out first, a high-accuracy galvanometer scanning locating table is formed, and the fact that the same high-accuracy galvanometer scanning locating effect is obtained at different laser processing distances is guaranteed. Quick accurate etching on images with different wire widths can be achieved, etching accuracy and processing speed are considered at the same time, the method and device can be widely used a plane etching system and a three-dimensional laser etching system, and the processing efficiency of equipment is improved.
Owner:武汉飞能达激光技术有限公司

Method and device for improving metal cladding deposition additive manufacturing accuracy by means of laser edge cutting

The invention discloses a method and a device for improving the metal cladding deposition additive manufacturing accuracy by means of laser edge cutting. The method includes 1), depositing a first layer of metal droplets, and cutting and machining side surfaces of the first layer of deposited metal by the aid of laser; 2), depositing a second layer of metal droplets, and cutting and machining side surfaces of the second layer of deposited metal by the aid of laser; 3), depositing an N layer of metal droplets, and cutting and machining side surfaces of the N layer of deposited metal by the aid of laser; 4), repeating the same procedure until metal droplets are completely deposited and side surfaces of the last layer of deposited metal are cut and machined so that the metal cladding deposition forming accuracy is improved. The method and the device have the advantages that the machining flexibility is high owing to a laser edge cutting mode, the quality of products is stable, a heat affected zone is small, the follow-up machining amount is low, the micro-machine precision machining accuracy and efficiency are effectively improved, the probability of batch production of parts of micro-machines is effectively increased, and the machining cost is lowered.
Owner:徐州中伦光伏材料有限公司

Electrolytic milling-grinding machining tool cathode with efficiency and precision and electrolytic milling-grinding method

InactiveCN108406018AReduced contact depthFully contactedHigh current densityContact depth
The invention relates to an electrolytic milling-grinding machining tool cathode with efficiency and precision and an electrolytic milling-grinding method, and belongs to the field of electrolytic milling-grinding composite machining. According to the electrolytic milling-grinding machining tool cathode and the electrolytic milling-grinding method, a plurality of arc-shaped grooves at equal intervals are formed in the lower end of the side wall of the tool cathode, the side walls of the grooves are insulated, and diamond abrasive particles are inlaid in the wall surfaces of the portions, except for the grooves, of the side wall of a cathode base body through a resin binder, so that electrochemical anodic dissolution only exists in the surfaces of the portions, opposite to the grooves, of aworkpiece, at the moment, the depths of the grooves become a part of a machining gap, accordingly the contact depth between the diamond abrasive particles in the portions, except for the grooves, ofthe side wall of the cathode base body and the machining surface of the workpiece is increased, then the grinding effect of the diamond abrasive particles on the workpiece in the electrolytic milling-grinding process is enhanced, and the precision and the surface quality of the electrolytic milling-grinding machining can be improved; and moreover, compared with the electrolytic milling-grinding finish machining under the low current density in the past, the tool cathode can adopt higher current density, and the machining efficiency can be improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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