41 results about "Micro geometry" patented technology

An implant for surgical insertion into tissue of a patient includes a microgeometric, repetitive pattern, in the form of a multiplicity of alternating ridges and grooves, each having an established width in a range of about 2 to about 25 microns, and an established depth in a range of about 2 to about 25 microns, each groove having a base and a wall; and a microgeometric random surface pattern, applied over the repetitive surface pattern, defining a multiplicity of micro-pits having dimensions in a range of about 0.1 to about 4 microns.

The invention relates to the field of laser processing, in particular to a method and a device for compositely preparing a surface-layer biomimetic structure by mechanical effects based on laser carving and laser shock, which are particularly suitable for processing a biomimetic surface and a friction pair surface. The method is characterized by comprising the following steps: firstly preparing a regular micro geometrical appearance with certain density (space), width, depth, angle and shape on the surface of a workpiece by the laser carving technology; and then forcedly processing the micro geometrical appearance area by laser shock to process a microstructure which has the required shape and management mode and is optimally matched with the requirement of lubricating property on the surface of the workpiece. The device for the implementation method comprises a control device, a nanosecond laser generator, a laser beam I, a light guide tube I, a totally reflecting mirror I, a light spot adjusting device I, a fiber laser, a laser beam II, a light guide tube II, a totally reflecting mirror II, a light spot adjusting device II, an automatic spraying device, a restrain layer, an absorption layer, the workpiece, a workpiece fixture system and a five-axis working platform.

A micro-geometry measuring device capable of reducing measuring force thereof for avoiding damage on micro-geometry of workpiece surface and measuring at a high-speed is provided. The micro-geometry measuring device has a stylus mechanism having a stylus mechanism provided to an arm and having a stylus body, a measuring force adjusting mechanism for adjusting a measuring force working between the stylus body and the workpiece, a displacement sensor for detecting a position of the arm, and a measuring force controller for controlling the measuring force adjusting mechanism. The stylus mechanism includes a vibrator for resonantly vibrating the stylus body, and a detector for detecting vibration status changing when the stylus body touches the workpiece. The change in vibration of the stylus body vibrated by the vibrator is directly detected by the detector and a signal therefrom is fed back to the measuring force controller to keep constant measuring force working between the stylus body and the workpiece.

The invention is a forming mould and a manufacturing method of a laser texturing metal plastic. After being processed by the laser, the hardness of a surface of the forming mould of laser texturing metal plastic is HV800 to 10000, which has the microstructure of crater-shaped micro-geometrical structure consisting of spacing and unevenly distributed micro pits and bosses around the micro pits. Wherein, the geometric parameters of the crater-shaped micro-geometrical structure are: the pit diameter (B) of the pit is 20 to 500 Mu m; the height (h) of the boss is 1 to 8 Mu m; the width (b) of the boss is 3 to 20 Mu m; and distance D between two adjacent pits is 50 to 500 Mu m. The invention has an advantage that surface material is microscopically hardened and pinning is macroscopically strengthened when plastic forming is practiced by the mould, thereby greatly improving properties of wear resistance of the mould. In addition, the micro pits on the surface of the mould can be used fro storing lubrication oil and gathering wear particles, thereby improving lubrication state of the mould to have an effect of lubrication and friction-reducing. And the special laser texturing structure of the surface optimizes forming the technology of the metal plastic.

A fine feed mechanism (50) and a coarse feed mechanism (60) respectively for minutely and greatly displacing a stylus (12) is provided to a microscopic geometry measuring device (1), so that the respective mechanisms (50, 60) are combinedly actuated for easily controlling the movement of the stylus (12) in a wide range at a short time. Further, a movable balancing portion (53) moving in a direction opposite to a movable driving portion (52) is provided to the fine feed mechanism (50). Since a reaction force caused by the movement of the movable driving portion (52) is cancelled by another reaction force caused by the movement of the movable balancing portion (53) at a fixed portion (51), no mechanical interference is caused between the respective mechanisms (50, 60), thus accurately controlling the movement of the stylus (12).

A microscopic geometry cutting device includes: a controller that outputs a timer count start command in starting a driving program which controls a drive of an X-axis or a Y-axis moving mechanism; an arrival time calculator that calculates an arrival time from when the timer count start command is output till when the cutter arrives at a machining start position in accordance with relative moving speed information of the moving mechanisms and machining start position information of a workpiece W; an elapsed time determiner that determines whether an elapsed time from when the timer count start command is output is coincident with the arrival time and outputs a trigger signal when the elapsed time is coincident with the arrival time; and a reciprocating stage driver that drives the reciprocating stage in a manner that the cutter advances and retracts in a predetermined cutting depth in response to the trigger signal.

This invention provides a method and an apparatus of measuring a micro-structure, capable of evaluating a geometry of a micro-structure formed typically on the surface of a semiconductor substrate, in a non-destructive, easy, precise and quantitative manner. A reflection spectrum of a sample having a known dimension of a target micro-geometry is measured (A1), features (waveform parameters) which strongly correlate to a dimension of the measured micro-geometry are determined (A2), a relation between the dimension of the micro-geometry and the waveform parameters is found (A3), and a dimension of the micro-structure having an unknown dimension is finally determined using this relation and based on the reflection spectrum obtained therefrom (A4, A5).

The invention provides a construction method of a carbon fiber composite material equivalent dielectric constant model. A common equivalent dielectric constant model is established from the axial direction of carbon fibers and the radial direction of the carbon fibers aiming at a composite material with the carbon fibers in the cross section, which are arrayed in a rectangular shape; a shielding efficiency expression formula of a carbon fiber composite material is established according to a transmission line theory; actual shielding efficiency of a plurality of frequency points on the carbon fiber composite material is calculated through simulation; the shielding efficiency expression formula of the carbon fiber composite material is combined according to actual shielding efficiency of a plurality of frequency points, which are calculated by the simulation; and unknown parameters in the common equivalent dielectric constant model of the carbon fiber composite material are obtained by utilizing least squares inversion, and construction of the common equivalent dielectric constant model of the carbon fiber composite material is finished. By adopting the construction method provided by the invention, the difficulty that excessive meshes are divided, caused by an inner micro-geometry structure of the carbon fiber composite material in an actual numerical value simulation process, is overcome; and numerical value simulation of shielding efficiency, magnetic wave transmission property and the like of the composite material is convenient to realize, and the construction method is simple in calculation and convenient to realize.

The invention discloses a carbon/carbon composite and metallic material compound cooker and a production method. The method is characterized by comprising the steps of carbon/carbon composite material outer layer green body manufacture, liquid phase impregnation, calcination reduction, metal material inner layer green body manufacture and composite treatment. The manufactured compound cooker comprises a carbon/carbon composite material outer layer green body, a metal material inner layer green body, and a connecting layer connecting the carbon/carbon composite material outer layer green body and the metal material inner layer green body. The method is simple in technology. The metal connecting layer is prepared on the surface of the carbon/carbon composite through the liquid phase impregnation and the calcination reduction, and the chemical component and the micro-geometry structure of the surface of the carbon/carbon composite are changed. Moreover, the attached metal connecting layer and the metal materials have good compatibility, so that the produced carbon/carbon composite and metallic material compound cooker has the advantages of being quick in heating, high in heat efficiency, light, corrosion resistant, high in strength and the like compared with an existing single-iron electromagnetic heating cooker or other existing multi-metal electromagnetic heating cookers.

The invention provides a tooth surface equal interval sampling method used for improving the gear measuring precision. In a gear measuring process, the problem that the tooth profile measuring precision of a gear measuring instrument is affected by the shortcomings of the existing data acquisition technology is solved, and the problem that corresponding error curve reference of tool and gear grinding is inaccurate is solved. The problems that addendum sampling points are sparser than dedendum sampling points and the tooth surface microscopic geometry cannot be integrally and truly reflected are solved. The gear measuring precision is improved. Error curves and actual tooth profile points are one-to-one corresponding for visual analysis, which is conducive to the gear error analysis and provides reference for gear tool grinding.

The invention relates to a calculation method for quantitatively evaluating the sealing performance of a non-API oil sleeve joint. The method comprises the following steps: firstly, combining a MonteCarlo random normal distribution sampling formula with sealing surface roughness; and carrying out simulation to obtain a contour curve of the sealing surface, obtaining simulation curve geometric common characteristics according to contour curve geometric morphology characteristic statistical data under different sample capacities and surface roughness, and establishing a metal-to-metal sealing microscopic leakage model; then deducing a gas leakage rate calculation formula containing the microscopic geometrical morphology characteristics of the sealing surface by combining the characteristicsof the leaked gas, and finally, according to the processing parameters of the main sealing structure of the non-API oil casing pipe joint, obtaining the total sealing pre-tightening pressure of the main sealing surface, and performing calculating to obtain the total gas leakage rate of the main sealing structure, thereby obtaining the non-API oil casing pipe joint sealing performance quantitativeevaluation and prediction method. The influence of sealing machining parameters of multiple oil casing pipe joints and the characteristic of leaked gas on the leakage rate is considered.

The invention discloses a high-performance surface composite strengthening method for shaft parts, and belongs to the field of surface machining of metal materials. The surface composite strengtheningmethod comprises the following steps that S1, carrying out radial vibration turning on the shaft parts, and forming a specific regular distributed micron scale/nano scale microcosmic geometrical morphology on the surfaces of the shaft parts; S2, coating the surfaces; and S3, carrying out mechanical reinforcement treatment on the coating surfaces by adopting an ultrasonic rolling processing technology. Compared with the prior art, the high-performance surface composite strengthening method for the shaft parts can greatly improve the bonding strength of a bonding interface of a base material and a coating layer, meanwhile, the hardness, the fatigue strength and the wear-resistant and corrosion-resistant shaft parts of the final forming surfaces are improved, and the method has good popularization and application values.

The invention provides a micro geometrical morphology measurement system which is used for measuring the micro geometrical morphology of a test piece. The micro geometrical morphology measurement system comprises a first scanning device, a second scanning device and a flat substrate. The first probe of the first scanning device is contacted with the test piece. The second probe of the second scanning device is contacted with the flat substrate. The second scanning device or the flat substrate and the first scanning device are synchronously actuated so that the first probe is enabled to move on the test piece and the second probe is enabled to move on the flat substrate. The micro geometrical morphology of the test piece is obtained via calculation of first displacement of the first pivotally rotatable arm of the first scanning device and second displacement of the second pivotally rotatable arm of the second scanning device.

The invention discloses a surface polishing process for a metal part. The surface polishing process is specifically carried out according to the following steps that firstly, the surface of the metalpart is subjected to high pressure washing, is placed in cleaning liquid for degreasing treatment, is dried and is then ultrasonically cleaned; the metal part is then placed into a polishing solutionfor polishing, and pickling, neutralization, rinsing and drying are carried out; and finally, metal anti-rust wax is applied to the surface of the metal part. According to the surface polishing process, an environment-friendly polishing process is adopted, the operation is simple, running cost is low, safety and environmental protection are achieved, the micro-geometry shape of the metal surface can be can improved after polishing, the micro-roughness of the metal surface is reduced, and the gloss of the metal surface is improved.

The invention discloses a lighting liquid crystal display panel. The lighting liquid crystal display panel comprises an upper glass plate, a lower glass plate, a liquid crystal, a circuit and the like. The lower glass plate is used for achieving the light guiding function, and comprises a light inlet face, a light outlet face and a light guiding body, wherein the light inlet face is arranged on the side face of the lower glass plate and rightly opposite to light beams emitted by a light source of the light inlet face, the part of light beams directly enter the lower glass plate through the light inlet face, the other part of light beams are reflected by a reflecting cover to enter the lower glass plate through the light inlet face; the light outlet face is arranged on the upper bottom face of the lower glass plate and used for guiding out the light beams in the lower glass plate; the light guiding body is arranged on the lower bottom face of the lower glass plate or arranged inside the lower glass plate and parallel to the light outlet face; a plurality of micro geometries for reflecting or refracting the light beams are sequentially arranged on the light guiding body. By means of the lighting liquid crystal display panel, the light guiding effect of an original backlighting source can be developed through the lower glass plate, propagation media and paths of light are greatly reduced, and the using ratio of light and the light outlet efficiency of the liquid crystal display panel are improved.

A piston for internal combustion diesel engine having a piston diameter of 180 to 650 mm, includes a top part and a body part connectable to each other, the top part defining, when installed in a cylinder of the engine, the piston side of a combustion chamber, and the body part having an aperture for a gudgeon pin, bosses for distributing forces, when in use, between the piston and the gudgeon pin, the body part having an interior, an outer surface and operable connecting surfaces. The interior of the body part includes an interior wall having a macro geometry of wavy surface, where a wave has a length of 3 to 25 mm and a height of 0.3 to 3 mm, the wavy surface having a micro geometry measurable as a surface roughness of 5 to 9 μm.

The invention discloses a metal fire melted mark quantitative metallography and phase analysis system and method. The system comprises an image collecting module, a first preprocessing module, a crystal boundary extracting module, a first test module, a second preprocessing module, a first analysis module, a second analysis module, a second test module, a second test module, a judgement module andan output module. The quantitative assessment analysis can be performed on the morphology, the element ingredient, the phase ingredient, the crystal particle number and the crystal particle size of metal fire melted marks, so that the fire evidence identification efficiency and accuracy are improved; according to regional melted mark transmission electron microscopy test and X-ray diffractive phase analytical instrument test, data mining and image processing machines can be used for recognition; the microscopic geometry size, the morphological characteristics, the regional element ingredientand structure, the phase ingredient and the phase ingredient distribution rule of the metal fire melted marks in different firing modes are uncovered; the serialized, systematized and standardized study on the fire marks is realized.

A capsule device suitable for insertion into a lumen of a patient, the lumen having a lumen wall, wherein the capsule device (100, 200, 300, 400, 500) comprises a) a capsule housing (110, 120, 210, 220) having an outside shape formed as a rounded object and defining an exterior surface, and b) a tissue interfacing component (130, 230) disposed relative to the capsule housing (110, 120, 210, 220), the tissue interfacing component (130, 230) configured to interact with the lumen wall at a target location, wherein the capsule device is configured as a self-righting capsule having a geometric center and a center of mass offset from the geometric center along a first axis, wherein when the capsule device (100, 200, 300, 400, 500) is supported by the tissue of the lumen wall while being oriented so that the centre of mass is offset laterally from the geometric center the capsule device experiences an externally applied torque due to gravity acting to orient the capsule device with the first axis oriented along the direction of gravity to enable the tissue interfacing component (130, 230) to interact with the lumen wall at the target location, wherein at least a portion of the exterior surface of the capsule device (100, 200, 300, 400, 500) has a surface property exhibiting one or more surface properties selected from the group consisting of a surface coating, a surface roughness, a surface geometry, and a surface micro-geometry, and wherein said surface property is selected to provide low friction, such as low static friction, ensuring slipping movement of the capsule device relative to the tissue of the lumen wall when said externally applied torque due to gravity acts on the capsule device.