91results about How to "High precision manufacturing" patented technology

The invention discloses a method for manufacturing dentate special-shaped ceramic components by injection molding, belonging to the technical field of high-performance ceramic preparation. The methodcomprises the following steps: evenly mixing 81wt% to 90wt% of ceramic powder and 10wt% to 19wt% of organic binders by weight percentage to obtain an injection-molding mixture, injection-molding the injection-molding mixture on an injection-molding machine with the injection temperature being 175 to 195 DEG C, to obtain a green body, and de-molding within 2 minutes after the injection, so as to obtain a molded green body; and then, subjecting the molded green body to water-extraction degreasing and thermal degreasing, sintering the degreased green body at 1,350 to 1,550 DEG C, holding for 1 to4 hours and furnace-cooling to obtain the ceramic components. The invention has the advantages of high automation degree, high molding and degreasing efficiencies, even green body, high dimensional accuracy and surface smoothness of sintered products, and environment-friendly and energy-saving manufacture.

An exhaust control valve has a valve housing and a valve body rotatably contained within the valve housing. The valve body cooperates with the valve housing for controlling the flow of exhaust gas. A transmission member rotationally drives a valve shaft of the valve body. The valve body is formed in a cylindrical shape and coaxially with an axis line of the valve shaft. The valve body and the valve shaft are made from a one-piece body by casting. This arrangement provides an exhaust control valve for an engine having a valve body that provides excellent sealing properties, demonstrates high response to driving torque and is easy to manufacture through casting.

The invention relates to a method for producing a scattered radiation grating or collimator (4) for a radiation type, the scattered radiation grating or collimator consisting of at least one geometrically predeterminable base body (6) The base body (6) has a channel or a channel groove (5) extending between its two opposing surfaces for the passage of the primary beam of the beam type. The method is characterized in that the base body ( 6 ) is formed by die-casting or stereolithography from a structural material that absorbs strongly this type of radiation. The use of the method allows the production of scattered radiation gratings or collimators with high precision using only a small number of method steps.

The invention relates to a dynamic liquid bearing which can confirm axial space needed in working, and relative production, and main axle motor, wherein said bearing (101) at least comprises axle (7), an axle sleeve (8) rotationally relative to the axle (7), the first cam element (6) fixed on the axle (7), and the second cam element (9) fixed on the axle (7). In addition, said production comprises: 1, sheathing axle sleeve (8) on the axle (7); inserting second cam element (9) into axle (7); 2, pushing the axial upper end of second cam element (9); 3, holding said pushing operation, welding axle (7) and the second cam element (9), to fix the second cam element (9) on the axle (7).

To provide a method for fabricating a high precision diffraction optical element capable of enhancing diffraction efficiency. [MEANS FOR SOLVING PROBLEMS] A diffraction optical element having a periodical stepwise profile is fabricated by repeating a series of processes for exposing and developing a substrate (1) coated with resist (2) through a mask to form a resist pattern and then etching the resist pattern. In the first process, a pattern having a width identical to that of the step is formed and then the width of the pattern is increased in the subsequent processes. When fabricating a seven-step diffraction optical element assuming the level difference of step is D, the second, fourth and sixth step portions are etched with depth D in the first process the ninth step portion is etched with depth 2D in the second process, the fifth, sixth and seventh step portions are etched with depth 2D in the third process, and the third, fourth, fifth, sixth and seventh step portions are etched with depth 2D in the fourth process.

An image pickup including a light emission portion (20) that irradiates an object with near infrared; and an image pickup portion (10) that receives a reflection light image of the object by the near infrared. The image pickup portion includes a lens array containing a substrate on which multiple lenses to respectively receive the reflection light image of the object by the near infrared are arranged; a light shield spacer that shields beams of light that have passed through the lens array from each other; a color filter separated into areas according to beams of light that pass through the light shield spacer, each of which transmits only particular beams of near infrared depending on the wavelengths thereof; and an image pickup element that simultaneously obtains multiple images of the object which are formed of each of the particular beams of near infrared having independent wavelengths that have passed through each of the areas of the color filter.

A method for manufacturing a master for concavo-convex pattern transfer, which enables highly accurate manufacture of a master carrying a concavo-convex pattern including a convex portion at a large aspect ratio, and a method for manufacturing a stamp using the master are provided. A mask layer is formed in a predetermined pattern on an object to be etched having a higher rigidity than that of a resist material. The object to be etched is then etched so as to form a concavo-convex pattern on the surface thereof to obtain a master for concavo-convex pattern transfer. A material having a lower etching rate than that of the resist material and that of the object to be etched is used as a material of the mask layer.

The invention provides variable-tread axles of trailer, in the state of freely advancing and retreating of inside axle relative to outside axle and in the variable-tread axles, realizing stopping the rotation of inside axle and needing no spline to position vehicle at the same time, in addition, realizing enlarging the widening amount of the tread. It has: the outside axle supported on the bodywork by plate springs, the inside axle supporting the wheel, the hydraulic cylinder device driving the inside axle in the axial direction and the locking device fixing the inside axle..

A method of manufacturing the molded stator of a dynamo electric machine comprises a lamination step for constituting a split lamination core group structure (7) by laminating a plurality of core sheets (6) in each of which a plurality of core pieces (61) are bonded to one coupling part through a bridge (62), a winding step for winding a coil around the tooth of each split lamination core (71) of the split lamination core group structure (7), a cutting step for cutting the split lamination core (71), around which a coil is wound, at the bridge and separating the split lamination core, a temporary fixing step for shaping a plurality of split lamination cores (71) into an annular stator (2) and fixing the stator temporarily, and a molding step for setting the stator (2) in a die by inserting a mold mandrel (10) to the inner circumferential side of the stator, and fixing the outer circumferential surface of the stator (2) with resin.

The invention provides a tape cutting apparatus, a tap printing apparatus having the same, and a method of controlling a stepping motor. The tape cutting apparatus includes: a half cutter (62) configured to cut a body tape (Ta) or a release tape (Tb) with respect to a processed tape (T) having the release tape (Tb) adhered to the body tape (Ta); a stepping motor (63) configured to cause the half cutter (62) to perform a cutting operation; and a motor control unit (200) configured to control the stepping motor (63), wherein the motor control unit (200) is configured to continue the cutting operation until the stepping motor (63) loses steps.

An apparatus for manufacturing an iron core comprising: a plate thickness measurement unit for measuring a thickness of the strip as an intermediate product of the iron core; an inlet guide for positioning the strip in a widthwise direction thereof; a mil roll unit for performing a rolling-bending process to the strip fed out of the inlet guide; a restraint jig for shaping the strip fed out of the mil unit and holding a curvature thereof constant; and a curvature measurement unit for measuring a curvature of the strip to which the rolling-bending process has been performed by using said mill roll. Position control of the inlet guide, the pressure roll unit, and the restraint jig is performed based on at least one of the plate thickness and the curvature of the strip.

The invention discloses a suppression method for partial discharge at a flange of a GIS / GIL supporting insulator. According to the invention, reduction of electric field intensity in a flange-side local air gap area is taken as an optimization target, and optimal space distribution of flange-side insulation internal dielectric parameters of supporting insulator is solved by using a variable density or level set algorithm; and extracting the geometric contour of a high-dielectric region by using an image segmentation algorithm, and acquiring a CAD drawing of the geometric shape of the high-dielectric region through a parameter modeling mode. According to the invention, dielectric functional gradient material distribution is introduced in consideration of the mechanical properties and interface bonding strength of a cast workpiece, the structural design of a high-dielectric area workpiece is improved; a high-dielectric composite material is prepared in a high-dielectric filler / polymer blending mode, and manufacturing of the workpiece is completed through 3D printing; and finally, the high-dielectric workpiece is put into a traditional epoxy pouring metal mold, and thermocuring epoxy resin is poured to complete manufacturing of the supporting insulator.

A displacement pump with variable volume flow having a casing; a chamber with an inlet opening on a low pressure side and an outlet opening on a high pressure side for a fluid; an internal rotor capable of rotation about a rotational axis (DI); a ring having a central ring axis (DA) surrounding the internal rotor and forming together with the ring, at least one delivery cell in which fluid is delivered from a low pressure side to a high pressure side of the pump; and an adjusting device which, during an adjusting movement, rolls off on the casing without slipping is provided. The internal rotor is fixed to the adjusting device and rotatble about the rotational axis (DI), and the position of the rotational axis (DI) relative to the central ring axis (DA) of the ring is adjusted by the adjusting movement of the adjusting device.

The invention discloses powder bonding 3D printing equipment and method for preparing a complex geological model. The equipment comprises a rack, a transverse guide rail, a powder laying and bonding assembly stepping motor, a powder laying and bonding assembly, a small longitudinal beam stepping motor, a small longitudinal beam, a longitudinal guide rail, a crack cutting device stepping motor, a crack cutting device, a crack filling device stepping motor, a crack filling device, a lifting forming chamber and a control system. According to the powder bonding 3D printing equipment, through cooperative work among the steps of powder laying, binder injection bonding and forming, crack cutting, crack filling, lifting platform movement and the like, simultaneous printing of hard rock, soft rockand other multi-strength rock materials and a complex crack network is achieved for the first time through a layer-by-layer stacking method, and a high-precision complex geological model is prepared;and the problem of manufacturing a three-dimensional physical model of a complex geological structure is solved.

The invention relates to a vane pump, comprising a rotor, which is supported in a pump housing and driven by a shaft, a plurality of vane plates supported in the rotor in a radially movable manner, and an outer ring that surrounds the rotor and the vane plates, the outer ring being arranged either directly in the pump housing or in an adjusting ring that can be moved in the pump housing along specified paths. The invention is based on the aim of developing a vane pump that among other things lowers the frictional and leakage losses, ensures the pump chambers are filled and drained optimally in regard to flow, in the lower rotational speed ranged as well as in the upper rotational speed range, significantly reduces the power losses, also is easy to manufacture and assemble in regard to production and significantly reduces the production costs, at the same time is insensitive to particles, minimizes the wear of the assemblies, and ensures the reliability and service life and a high specific delivery volume flow at high volumetric efficiency, both at low rotational speeds and high rotational speeds. The vane pump according to the invention is characterized in particular in that a cylinder guide (13) is arranged in the hollow rotor shaft (24), in which cylinder guide a freely rotating synchronizing cylinder (15) that is not rigidly connected to the adjacent assemblies is guided, wherein vane-shaped vane plate guide webs (14), which are associated with bearing grooves (4) arranged in the wall of the hollow rotor shaft (24) and which radially protrude beyond the hollow rotor shaft (24) in the vicinity of said bearing grooves (4) by approximately 0.75 to 1.8 times the diameter of the synchronizing cylinder (15) and which have bearing grooves (4), are rigidly arranged on the hollow rotor shaft (24) in such a way that the hollow rotor shaft (24) forms a vane rotor (3) together with vane plate guide webs (14), and outlet opening(s) (10), which extend completely through the adjusting slide and which extend radially with respect to the inner cylinder (6) and which are opposite the inlet nodule(s) (9) arranged in the side walls of the pump housing (1) on the pump side, are arranged in the adjusting slide (7).

The invention relates to a milling machine for producing a dental component, such as a crown or an abutment for example, from a blank. The milling machine includes a stop and a holder for the blank. The invention is characterized in that the holder is designed such that the holder can be surrounded by a mounting, which surrounds the holder, of the blank, and the surrounding mounting of the blank can be brought into contact with the stop for positioning purposes. The invention further relates to a corresponding blank.

A combination of electrodes that are cylindrical and an asymmetric arrangement of cylindrical and planar electrodes are used to create electric fields that compensate for toroidal curvature in a toroidal ion trap, the design lending itself to high precision manufacturing and miniaturization, converging ion paths that enhance detection, higher pressure operation, and optimization of the shape of the electric fields by careful arrangement of the electrodes.

The device for manufacturing tire ply material efficiently and with high precision is equipped with: a first gripping-moving device provided with a first gripping tool, which grips the first connection edge of a cut piece at the emplacement position, on the tip of a first robot arm; and a second gripping-moving device provided with a second gripping tool, which grips the second connection edge, on the tip of a second robot arm. The first gripping tool comprises a gripping means on one side that grips the end portion on one side of the first connection edge of the cut piece and a gripping means on the other side that grips the end portion on the other side of the cut piece, and is provided with a stretching means that draws the gripping means away from each other to stretch the cut piece gripped therewith.

The invention provides a clutch gear manufacturing apparatus of the clutch gear for restraining the increase of process number, while manufacturing multiple tapered synchronization device and a clutch gear manufacturing method. The clutch gear manufacturing apparatus includes a die (16) that allows a clutch gear primary product (Wb), which has spline teeth (1) with chamfers (1a) formed in an outer peripheral surface of the primary product (Wb), to be disposed in the die (16), and includes a blade(16a) capable of forming reverse tapers (1b) at the spline teeth (1); a punch (18) capable of pressing down the primary product (Wb) disposed in the die (16) so that the spline teeth (1) are pressed by the blade (16a); a knockout sleeve (17) that receives the primary product (Wb) which is pressed down by the punch (18); and a punch pin (31) that forms a cone hole (4) in a side surface of the primary product (Wb) while the spline teeth (1) are pressed by the blade (16a).

The inventon provides a method for manufacturing surface unevenness, by which a desired uneven shape can be formed easily at a high accuracy by using a photomask. On one side of a photosensitive film (10) composed of a photosensitive resin composite, a mask member (20) having a light permeable section and a non light permeable section is arranged at an interval from the photosensitive film (10), and a light diffusing member (30) is arranged on the side opposite to the photosensitive film (10) of the mask member (20). Light is applied from a light source arranged on the side opposite to the mask member (20) of the light diffusing member (30), and a photosensitive film (10) is exposed through the light diffusing member (30) and the light permeable section of the mask member (20). An exposedsection or unexposed section of the photosensitive film (10) is removed by development, and unevenness determined by the shape of the exposed section or the unexposed section is formed on the photosensitive film (10). In the exposure, exposure conditions such as haze of the light diffusing member (30) are controlled, and the shape of the exposed section or the unexposed section is controlled.

Collection optics (10) are used with one or more light emitting diodes (106) to produce, e.g., collimated light. The collection optics (10) are produced in multiple pieces including a small reflective ring (102) that surrounds the one or more light emitting diodes (106). The reflective ring (102) may be positioned relative to the LEDs (106), using a mesa (112) upon which the LEDs (106) are mounted, as a lateral positioning guide. A separate upper reflector (104) uses the reflective ring (102) as a lateral positioning guide during assembly. The reflective ring (102) and the upper reflector (104) include reflective sidewalls that are approximately continuous when the reflective ring (102) and upper reflector (104) are assembled.