762results about How to "High shape accuracy" patented technology

A game apparatus allows a virtual object to act in a mixed reality space as if it had its own will. A player can play a game with the virtual object. Rules for controlling the action patterns of the virtual object on the basis of the objective of the game, and the relative positional relationship between the virtual object and the real object is pre-stored. The next action pattern of the virtual object is determined based on an operator command, the stored rule(s), a simulation progress status, and geometric information of a real object(s).

The invention discloses a method for compensating a rebounding error of an automobile cover panel based on numerical simulation. The method comprises the following steps of: constructing an ideal model of a stamping part in a computer, acquiring a finite element model of an original stamping die on the basis of the ideal model of the stamping part by a numerical simulation technology, and performing small-equidistance offsetting on the finite element model of the original stamping die to acquire the finite element model of a new die; stamping and forming the two dies and simulating the rebounding by the numerical simulation technology, and exporting grid data for rebounding analysis; and performing discrete Fourier transform on the grid data of the stamping part, which does not rebound, of the two dies, and the grid data of the stamping part, which rebounds, of the two dies respectively, and calculating a die molded surface which is subjected to compensation and correction by using a frequency domain transfer function concept of a linear system to acquire a computer-aided design (CAD) molded surface of the ideal die corresponding to an ideal stamping part. By performing numerical simulation of rebounding compensation on the die molded surface, a correction die size which can eliminate a geometric error caused by the rebounding of a workpiece can be obtained to ensure that the stamping part with high shape accuracy is obtained.

The invention provides hot-forming, punching and edge-cutting integral technology and a hot-forming, punching and edge-cutting integral die for high strength steel parts. The integral technology comprises the following steps: arranging an edge-cutting and punching tool on a hot-forming die of the high strength steel parts; placing high strength steel plate materials which is heated to be completely austenized into the hot-forming die for punching before hot stamping forming of the high strength steel plate materials; utilizing the edge-cutting and punching tool on the hot-forming die to perform edge-cutting and punching operations on workpieces subjected to stamping after the hot-forming die is closed; cooling the hot-forming die after the operations are over; and utilizing die components which contact formed parts to quench the formed parts. The integral die comprises a forming convex die, a forming concave die, an upper punching tool, a lower punching tool, an upper edge-cutting tool and a lower edge-cutting tool. The integral technology and the integral die reduce the production cost of the hot-formed parts, and shorten the production period of the hot-formed parts; and the hot-formed parts have high edge-cutting and punching quality and high dimension precision and shape precision.

The invention discloses a metal wire rod precision alignment cutting device and a method. The device comprises a double-layer machine frame. A front end guiding tank, a revolving alignment tank, a traction mechanism, a back end guiding tank, a cutting mechanism and a machinery sizing mechanism are arranged on the top portion of the double-layer machine frame. The revolving alignment tank comprises a revolving alignment straight tank support seat, an alignment guiding tank, a plurality of alignment modules and a protection cover. The traction mechanism comprises a traction mechanism support seat, a servo motor, a driving friction wheel and a driven friction wheel. The cutting mechanism comprises a cutting wheel support frame, an air cylinder, a cutting wheel motor and a slice-shaped cutting wheel. The machinery sizing mechanism comprises a horizontal scale plate, a pressure sensor, an infrared transmitting sensor and an infrared receiving sensor. The method includes the steps that the metal wire rod enters the revolving alignment tank through a front end guiding rank. The metal wire rod is alignmented, tracted, cut and prepared and enters the next working circulation. The metal wire rod precision alignment cutting device and the method is high in automatic degree. The shape of the cut metal line segment and the size precision are high. The cutting opening is smooth, free of deckle edge and free of splitting off. The metal wire rod precision alignment cutting device and the method are strong in practicality.

The invention discloses a small-caliber non-spherical permanent magnet magnetorheological polishing processing machine tool, which belongs to the technical field of grinding-polishing processing, and is used for solving the problem that the shape and size accuracy requirements of a processed part cannot be met since each position of a small-caliber non-spherical curved surface to be processed cannot be contacted during processing of workpieces with the conventional polishing processing equipment. A workbench is arranged on an X axis linear unit of an XY precision movable platform; an organ protection cover is arranged between the edge of the workbench and a cover plate; a workpiece main shaft is arranged on the workbench through a workpiece main shaft bracket; a Z axis linear unit is arranged on a portal frame; a revolving table is arranged on the Z axis linear unit through a right-angle connecting frame; the shaft end of a rotating shaft in the revolving table is connected with a polishing head main shaft bracket through a two-dimensional precision fine adjustment displacement table; and the polishing head main shaft bracket has a certain inclination angle, so that an included angle between a polishing head main shaft on the polishing head main shaft bracket and a horizontal plane is 40-45 degrees. The machine tool is suitable for ultra-precision polishing processing of high-accuracy small-caliber non-spherical parts.

The invention belongs to the technical field of optical device manufacturing and relates to a method for improving shape accuracy and processing efficiency of an off-axis aspheric mirror, comprising the following steps: (1) designing a rotary aspheric surface as well as a primary and secondary consubstantial structure for the primary body according to the size and the dimension of the off-axis aspheric mirror to be processed, i.e. a secondary body, and determining the amount of the off-axis aspheric secondary bodies to be processed at one time; (2) disposing through holes on a primary body blank piece; (3) placing all secondary body blank pieces into the through holes and fixing on a lathe after integrating into a cylindrical integrated work piece, and processing a spherical surface closest to the rotary aspheric surface on the integrated work piece; (4) generating a processing path of cutting tools based on the shape of the rotary aspheric surface, reprocessing the spherical surface by utilizing an ultra-precision lathe and carrying out form error analysis and compensating processing according to the measured integrated rotary aspheric surface shape. The provided method is simpleand easy to realize, has the advantages of high-efficiency, easy detachability and high shape accuracy and can realize high-efficient processing on an off-axis aspheric surface with high shape accuracy.

The invention provides a sheet adsorption device, a transport device and an image forming apparatus, for obtaining stable adsorbability, and little noises caused by air flowing and alternation of the load of a negative pressure generating mechanism and reduced power consumption, independent of the size and gradient of the adsorbent sheet. A flow path shifting unit (70) selects the section of the flow path according to the presence of recording media for covering a suction hole (42). Accordingly, air flow at the suction hole (42) not covered by the recording media is relatively reduced, therefore, no matter of the size and the gradient of the adsorbent sheet, stable adsorbability is obtained, the sheet adsorption device (30) is obtained, wherein the noises and alternation of the adsorbent load caused by air flow are reduced.

The invention belongs to the field of advanced manufacturing, and particularly relates to a hot isostatic pressing two-step forming method of a high temperature alloy compact piece. The method includes two steps of hot isostatic pressing, according to a first step of hot isostatic pressing, a formation control mold is controlled to deform at a low temperature or pressure, part pressed blanks high in precision of shapes and sizes are obtained, wrapping sleeve limitation does not exist in a second forming step, the temperature and the pressure which are most suitable for formation material are adopted, both holes left in the first step are eliminated, compactness is improved, and the precision of the shapes and the sizes is guaranteed, and good organizational performance under the most suitable temperature and the most suitable pressure is obtained. Due to the fact that the temperature and the pressure in the first forming step are low, material choosing problem of complicated formation control molds is solved, material which is difficult to process and high in high temperature yield strength is not required to be chosen as a formation control type mold core, and manufacture cost of the mold is reduced.

The invention relates to a device for pressing and mounting a thin-wall sleeve, which can solve the problem that the thin-wall sleeve is difficult to press and mount. The device comprises a press head, a basic shaft, a sliding sleeve, an upper floating retention sleeve, a lower floating retention sleeve, a copper sleeve and the like. The upper end face of the basic shaft is provided with a flange plate which is coaxially connected on a fixed fixture block by screws, an annular clamping groove of the fixed fixture block is clamped and hooped on a shaft journal at the upper part of the upper floating retention sleeve, the lower floating retention sleeve is coaxially positioned at the lower part of the upper floating retention sleeve, the upper floating retention sleeve and the lower floating retention sleeve are connected into a whole by the nuts of the retention sleeves, and the copper sleeve is sleeved and arranged on the lower floating retention sleeve. The sliding sleeve is arranged in the upper floating retention sleeve and the lower floating retention sleeve, and the middle part of the external diameter of the sliding sleeve is provided with a piston ring; and the lower half section of the sliding sleeve is provided with a solid shaft, and the end face of the solid shaft is provided with three centripetal tapered wedge T-shaped grooves which are uniformly distributed along a circumferential direction. The device has simple structure and convenient operation and can carry out pressing and mounting motions as long as the thin-wall sleeve is sleeved into the press head and a jack catch of a control button extends out, so that the parts of the thin-wall sleeve obtain higher pressing and mounting accuracy, and the effective guarantee is provided for enhancing the quality of a class of cylinder body.

A stamping step of forming a plurality of band-shaped core sheets (11), (12) having arc-shaped segment core sheets (15), (15a), the adjacent segment core sheets (15), (15a) connected together by narrow-width connecting portions (16), (16a) provided therebetween, the segment core sheets (15), (15a) having a plurality of pole sections (13), (14), (13a), (14a) protruding radially outward; and an annular shape forming step of winding the plurality of band-shaped core sheets (11), (12) in a spiral form while bending the band-shaped core sheets (11), (12) at the connecting portions (16), (16a) and superimposing the pole sections (13), (14), (13a), (14a) vertically one on another, thereby laminating the band-shaped core sheets (11), (12); wherein in the stamping step, notches (23a), (23) to be positioned in correspondence with the connecting portions (16), (16a) bent in the annular shape forming step are formed at radially outward sides of joining portions (22a), (22), the joining portions joining the adjacent pole sections (13a), (14a), (13), (14) in the segment core sheets (15a), (15) and positioned above and below the bent connecting portions (16), (16a).

A ring magnet manufacturing method includes the steps of stacking a plurality of radially oriented ring-shaped powder compacts (102) in an axial direction thereof to produce a ring-shaped powder compact rod, sintering the ring-shaped powder compact rod to produce a sintered ring-shaped powder compact rod (300) in which the ring-shaped powder compacts (102) are joined together, and dividing the sintered ring-shaped powder compact rod (300). In this ring magnet manufacturing method, protruding parts (103) are formed on upper end surfaces of the ring-shaped powder compacts (102) which will be located in uppermost layers of individual sintered ring magnets (100), for example, such that the ring-shaped powder compacts (102) are joined with a reduced joint strength at specific boundary regions of the sintered ring-shaped powder compact rod (300) where the protruding parts (103) are located than at the other boundary regions. The sintered ring magnets (100) are obtained by dividing the sintered ring-shaped powder compact rod (300) at the specific boundary regions having the reduced joint strength.

The invention discloses a diamond grinding wheel of an elliptical working face and a mutual wear forming and trimming method thereof. The profile of an axial section of a working face of the diamond grinding wheel is an elliptical arc profile; an end face of the diamond grinding wheel is an elliptical face; in the method, a diamond grinding wheel tool travels from left to right to a top point of an elliptical arc at a first starting point outside one side of a silicon carbide grinding stone along an elliptical arc traveling path, is then lifted along a first circular arc tangential to the top point and with a radius of more than 2mm, next travels from right to left to the top point of the elliptical arc from a second starting point outside the other side of the grinding stone along the elliptical arc traveling path and is lifted along a second circular arc tangential to the top point and with a radius of more than 2 mm. Compared with the conventional circular face diamond grinding wheel, the elliptical face diamond grinding wheel has the advantages that: a flatter grinding wheel elliptical working face and a workpiece curved surface can be used for complexing to grind, the number of effective grinding particles is increased, and the surface quality and the shape accuracy of curved surface grinding are improved.

A method of manufacturing a high strength steel sheet containing, in mass %, C: 0.02 to 0.04%, Si: at most 0.4%, Mn: 0.5-3.0%, P: at most 0.15%, S: at most 0.03%, Al: at most 0.50%, N: at most 0.01%, and Mo: 0.01-1.0%. The method includes performing hot rough rolling either directly or after heating to a temperature of at most 1300° C., commencing hot finish rolling either directly or after reheating or holding, completing finish rolling at a temperature of at least 780° C., performing coiling after cooling to a temperature of 750° C. or below at an average cooling rate of at least 3° C./second, heating to an annealing temperature of at least 700° C. and then cooling to a temperature of 600° C. or below at an average cooling rate of at least 3° C./second, then holding in a temperature range of 450-600° C. for at least 10 seconds, and performing hot dip galvanizing after cooling.

The tapping screw has a screw thread having a non-circular shape. Accordingly, when the tapping screw is screwed into the prepared hole formed in the attached member such as a steel plate, etc., the contact area of the screw thread and the circumferential face of the prepared hole of the attached member can be reduced in comparison with the screw thread having a circular outer shape. Accordingly, the screwing torque can be reduced. Further, since the top portion of the screw thread of the square outer shape has a rising shape without being broken, the biting property of the screw thread with respect to the prepared hole formed in the attached member is improved so that a female screw can be precisely threaded on the inner circumferential face of the prepared hole by the screw thread.

A manufacturing method of a liquid ejection head including an ejection outlet forming member provided with an ejection outlet for ejecting liquid and a flow passage communicating with the ejection outlet is constituted by the steps of: preparing a substrate on which a flow passage wall forming member for forming a part of a wall of the flow passage and a solid layer having a shape of a part of the flow passage contact each other, wherein the flow passage wall forming member has a height, from a surface of the substrate, substantially equal to that of the solid layer; providing a first layer, on the solid layer and the flow passage wall forming member, formed of a negative photosensitive resin material for forming another part of the wall of the flow passage; exposing to light a portion of the first layer correspondingly to the another part of the wall of the flow passage; providing a second layer, on the exposed first layer, formed of a negative photosensitive resin material to constitute the ejection outlet forming member; exposing to light a portion of the second layer correspondingly to the ejection outlet forming member; and forming the ejection outlet and another part of the flow passage by removing unexposed portions of the first layer and the second layer.

In a method for manufacturing a droplet discharge head, a first mold is prepared having first convexity portions shaped like pressure chambers of the droplet discharge head. A slurry is filled into the first mold, and the first mold is placed on a first porous plate. A solvent included in the slurry permeates into the first porous plate. The slurry is dried to form a first compact. Similarly, a second mold is prepared which has second convexity portions shaped like nozzle sections of the droplet discharge head. The slurry is filled into the second mold, and the second mold is placed on a second porous plate. The solvent included in the slurry permeates into the second porous plate. The slurry is dried to form a second compact. Thereafter, the first compact and the second compact are press bonded and fired.

A heat exchanger 10 includes a brazing heat exchanging tube S and a fin 4. The heat exchanging tube S and the fin 4 are brazed with each other via the brazing layer 11 of the heat exchanging tube S. The brazing layer 11 is formed by spraying of a brazing material consisting of Si: 6 to 15 mass%, Zn :1 to 20 mass%, at least one of Cu: 0.3 to 0.6 mass% and Mn: 0.3 to 1. 5 mass, and the balance being aluminum and inevitable impurities.

A photo-fabrication apparatus comprises a stage for holding a photosensitive member which is a substrate coated with a photosensitive material, a head part for emitting a spatially-modulated light beam to said photosensitive member and a computer. The head part has a DMD having a plurality of micromirrors arranged in a two-dimensional array, and a light beam from a light source is reflected on only some of the group of micromirrors in the DMD which have a predetermined tilt angle and led onto the photosensitive member. In the photo-fabrication apparatus, the tilt angle of each micromirror in the DMD is controlled by the computer. This can control the quantity of irradiation light for an irradiation region on the photosensitive member corresponding to each micromirror, to perform an exposure in accordance with a three-dimensional shape of a desired object for a short time. The exposed photosensitive member is developed by another apparatus.

A method of manufacturing a micro lens that can enhance the accuracy of landing positions of droplets and can fabricate a micro lens with good shape accuracy, a micro lens, an optical device, an optical transmitting device, a laser printer, head and a laser printer are provided. In a method of manufacturing a micro lens, a given number of droplets of a lens material are ejected from a droplet ejection head on a base member formed on a substrate. The method includes stopping relative movement between the substrate and the droplet ejection head; and ejecting a plurality of the droplets on a given position on the substrate from the droplet ejection head.