Dancer detecting mechanism capable of achieving variable-tension adjustment and control

The invention discloses a dancer detecting mechanism capable of achieving variable-tension adjustment and control. The dancer detecting mechanism can be particularly used for variable-tension precise adjustment and control during layer changing winding of optical fiber windings. According to the dancer detecting mechanism capable of achieving variable-tension adjustment and control, a minitype ball screw transmission pair is driven by a stepping motor to enable the position of a sliding poise in the length direction of a swing rod to be changed accurately, position detection is conducted on the swing rod through an angle transducer, and thus the swing rod is kept at the horizontal position in the moment balance state. Through changing of the position of the sliding poise and precise detection and control over the horizontal balanced position of the swing rod, the tension of an optical fiber which is wound after layer changing can meet the requirement for a new stable value, automatic variable-tension ...

High intensity alloyed steel linkage rod deep cooling embrittlement bulge-breaking process

The invention provides a process for deep-cooling, embrittling and broken-expanding of a connecting rod of high-rigid alloy steel, relating to an improvement of the process for processing engine components. The process comprises the following steps of: a. putting the connecting rod in liquid nitrogen for deep cooling for more than 5 minutes; basically deep cooling of the connecting rod to a test piece core part after ending of heat exchange; and measuring temperature at a fracture of the cracked test piece same as surface temperature of the test piece; b. keeping the deep cooling temperature to be lower than 156 DEG C below zero; c. placing an expanding sleeve in a macropore of the connecting rod and fixing the connecting rod on an operating board of a pressure machine, and punching the expanding sleeve by an expanding head to expand the connecting rod to be broken. The process has the advantages of changing tractility of the connecting rod of a high-power engine, and ensuring radically ...

Qualitative fiber identification method

The invention discloses a qualitative fiber identification method which belongs to the technical field of component analysis and comprises the following steps: establishment of a fiber standard sample database, to be more specific, taking different types of fiber standard samples, crushing, mixing evenly, performing thermogravimetric analysis to obtain thermogravimetric analysis data of the different types of fiber standard samples to establish the fiber standard sample database; and identification and determination, to be more specific, crushing and mixing evenly a fiber sample, performing thermogravimetric analysis to obtain thermogravimetric analysis data of the fiber sample, then comparing with data in the fiber standard sample database to determine the type of the fiber sample. The method using thermogravimetric analysis for fiber analysis to obtain the thermogravimetric analysis data, by use of the characteristic that different types of fibers have different thermogravimetric curves ...

Grinding, polishing and inspection integrated machining equipment for small-caliber aspheric optical element

The grinding, polishing and detecting integrated machining equipment for the small-caliber aspheric optical element is characterized by comprising a lathe bed, a grinding mechanism, a rough polishing mechanism, a fine polishing mechanism, a detecting mechanism and a workpiece clamping and conveying mechanism, wherein the grinding mechanism, the rough polishing mechanism, the fine polishing mechanism and the detecting mechanism are arranged on the lathe bed, and the workpiece clamping and conveying mechanism is used for clamping and conveying the small-caliber aspheric optical element. The polishing machine has the advantages that the grinding mechanism, the rough polishing mechanism, the fine polishing mechanism, the detection mechanism and the workpiece clamping and conveying mechanism are integrated, the overall size is small, and the requirement for the installation space is low; meanwhile, the automation and intelligence degree is improved through automatic conveying of the workpieces ...

Barrel-type roller grinding device

A grinding device for processing a drum-shaped roller belongs to the machining technology field. The invention is characterized in that a precision platform is taken as the bed; a hydrodynamic-hydrostatic grinding wheel system, a precision work-arbor system, a Y-axis precision rectilinear motion platform and a Z-axis precision turntable are arranged on the bed; in the turning and the rectilinear motions, the double-shaft numerical-control linkage is adopted, and the machining track can be controlled via changing the linear feed amount and the angular displacement. The grinding device has the advantages of solving the technical difficulties in machining the drum-shaped roller, ensuring the machining precision and the working efficiency of the drum-shaped roller, satisfying the developing requirement of increasing the oil-supply pressure in a novel engine, having definite significance for improving the design level and the manufacture level of a vehicle dynamical system.

Numerical control polishing machine for optical elements

The invention relates to a digital control polishing machine tool of a non-spherical optical element with large caliber, which pertains to the technical filed of optical machine building and is characterized in that: the machine tool essentially consists of a base system, an upright column system and a crossbeam system; the base system comprises a base, an X-axis feeding system, an A-axis overturning feeding system and a C-axis revolved feeding system; the crossbeam system comprises a crossbeam, a Y-axis feeding system, a Z-axis feeding system, a power planetary polishing head and a polishingdie. A four link rod locating mechanism is adopted to realize 16 translation of the polishing die; the machine tool has the advantages that: five-axis digital control and the manner of four-axis linking motion are adopted in the digital control polishing machine tool of the optical element; the overturning and rotating structure of a work piece is utilized, thus causing the polishing position to keep ...

High-precision cylinder sleeve inner wall enclosed special-shaped curve groove processing method

The invention relates to a high-precision cylinder sleeve inner wall enclosed special-shaped curve groove processing method, wherein the method is especially suitable for high-precision milling and grinding processing of a cylinder sleeve inner wall enclosed special-shaped curve groove with a large breadth-depth ratio. A mathematical model establishment method for cylinder sleeve inner wall enclosed special-shaped curve groove numerical-controlled programming is brought forward; a self-adaption screening method is used for determining a feed step length calculation method; a method of VC++ program code generation is utilized; and a numerical control system is used for carrying out parameter configuration and a program instruction programming method is used. Therefore, problems processing tool deformation during numerical-controlled milling and grinding wheel wearing and correction during tool vibration control and grinding can be solved; and precise processing of the cylinder sleeve inner ...

High-rigidity and high-precision nut seat driving connection device

The invention discloses a high-rigidity and high-precision nut seat driving connection device for high-precision connection of a static pressure guide rail and a ball screw in a precision grinder. The device comprises a lead screw (6), a lead screw nut (4) matched with the lead screw (6), a nut connecting sleeve (5) connected with the nut (4), and a guide rail connecting plate (1) sleeved outsidethe nut connecting sleeve (5); and the periphery of the guide rail connecting plate (1) is provided with four same stop blocks (2), two same stop block covers (7), three rollers (3), (8) and (10) with same shapes and sizes and different functions fixed on the vertical surface of the lead screw (6), anti-rotating stop blocks (9) and (11) and a stop block connecting plate (12), wherein a line contact structure is adopted among the stop blocks, the rollers and the guide rail connecting plate. An anti-rotating roller (10) is linearly contacted with the anti-rotating stop blocks (9) and (11), gapsare ...

High-rigidity and high-precision nut seat driving connection device

The invention discloses a high-rigidity and high-precision nut seat driving connection device for high-precision connection of a static pressure guide rail and a ball screw in a precision grinder. The device comprises a lead screw (6), a lead screw nut (4) matched with the lead screw (6), a nut connecting sleeve (5) connected with the nut (4), and a guide rail connecting plate (1) sleeved outside the nut connecting sleeve (5); and the periphery of the guide rail connecting plate (1) is provided with four same stop blocks (2), two same stop block covers (7), three rollers (3), (8) and (10) with same shapes and sizes and different functions fixed on the vertical surface of the lead screw (6), anti-rotating stop blocks (9) and (11) and a stop block connecting plate (12), wherein a line contact structure is adopted among the stop blocks, the rollers and the guide rail connecting plate. An anti-rotating roller (10) is linearly contacted with the anti-rotating stop blocks (9) and (11), gaps are ...

Barrel-type roller grinding device

A grinding device for processing a drum-shaped roller belongs to the machining technology field. The invention is characterized in that a precision platform is taken as the bed; a hydrodynamic-hydrostatic grinding wheel system, a precision work-arbor system, a Y-axis precision rectilinear motion platform and a Z-axis precision turntable are arranged on the bed; in the turning and the rectilinear motions, the double-shaft numerical-control linkage is adopted, and the machining track can be controlled via changing the linear feed amount and the angular displacement. The grinding device has the advantages of solving the technical difficulties in machining the drum-shaped roller, ensuring the machining precision and the working efficiency of the drum-shaped roller, satisfying the developing requirement of increasing the oil-supply pressure in a novel engine, having definite significance for improving the design level and the manufacture level of a vehicle dynamical system.

Water evaporation rate testing instrument

The invention provides a water evaporation rate testing instrument which comprises a base provided with a baseplate, a central shaft capable of being rotationally mounted on the baseplate, a sample holder turning plate capable of being rotationally mounted on the central shaft, sample holders fixed on the sample holder turning plate, a weighting device positioned above the sample holders, and a lifting device used for lifting the sample holder turning plate; each sample holder comprises two supporting columns vertically mounted on the sample holder turning plate and a sample hanging rod used for hanging a sample, wherein first concave positions used for bearing the two ends of the sample hanging rod are formed at the upper ends of the two supporting column; the weighing device comprises two U-shaped hangers, and second concave positions used for holding the sample hanging rods for weighting are formed at the tops of the two U-shaped hangers; when the sample holder turning plate goes down ...

High-precision drilling machining method and technology for single-tube hole expanding of inner hole of crawler plate

A high-precision drilling machining method and technology for single-tube hole expanding of an inner hole of a crawler plate particularly can be applied to precise machining of the inner hole of the crawler plate with high strength, high rigidity, high precision and high efficiency; clamping deformation of a thin-wall round pipe fitting is overcome; the problem of clamping and positioning of the rough outer surface of the crawler plate during the numerical control turning in the deep hole machiningis solved; the key technological difficulties of removing surface scratches and tool retracting marks in the deep hole machining are overcome by changing a tool body structure and an external chip removable manner; the online torque monitoring technology is adopted, and the feeding amount is automatically adjusted; the service life of a drill bit is prolonged; the scheme that a steel ball extrusion method is utilized for improving the smooth finish and the uniformity of the inner hole is provided ...

Cone calorimeter support special for light thin sample

A disclosed cone calorimeter support special for a light thin sample is a square support formed by a single or multiple metal wire rods, the square support is put in a sample combustion box of a cone calorimeter for fixing the light thin sample, and the profile dimension of the square support is equal to or less than the box port dimension of the sample combustion box. The square support prepared by the metal wire rods has a centrosymmetric picture, when the light sample with a thickness of about 0.2 mm is laminated to a thickness of 3 mm according to a routine test requirement and is put in the sample combustion box, the square support is placed on the light thin sample for fixing the light thin sample, so as to prevent that the light thin sample generates obvious warping or skewing or even floating with air flow during combustion and the test result has an obvious error. By additionally arranging the special support, it is possible to employ the cone calorimeter to test the light thin ...

Efficient cryogenic expansion breaking processing method used for positioning faces of connecting rod cover and connecting rod body of high-strength high-toughness steel connecting rod

The invention discloses an efficient cryogenic expansion breaking processing method used for positioning faces of a connecting rod cover and a connecting rod body of a high-strength high-toughness steel connecting rod. The method includes the steps: 1), adopting a laser processing method to radially process two symmetrically-distributed stress centralizing grooves in two faces of the inner side of a connecting rod big-head hole respectively; 2), placing the high-strength high-toughness steel connecting rod with the stress centralizing grooves processed in a liquid nitrogen storage tank for cryogenic treatment; 3), fixing the high-strength high-toughness steel connecting rod on a machine body of a press machine through a tool, and using a single-side wedge-shaped press head arranged on the press machine to quickly press the connecting rod down into the connecting rod big-head hole to complete expansion breaking of the connecting rod big-head hole. The efficient cryogenic expansion breaking ...

Workpiece step conveying driving system

The invention relates to a workpiece step conveying driving system which can realize a step conveying function, which is applied to the field of workpiece step conveying production in a large automatic production line, can overcome and make up the defects of a prior conveying technology on the multistation, long distance and heavy load conveying capacity, sufficiently ensure the requirements on step precision as well as reliability and stability of running and flexibly control the step working rhythm on site. The system comprises a power-driving part, double rotor clutch devices and a driven part, wherein the power-driving part takes a motor as a power source and can meet the requirements on step rhythm and production efficiency through three-level speed reduction; the driven part can achieve the step driving function, stop accumulated errors and ensure the step precision and the running stability through the function combination of a slider-crank mechanism, a rack and spur gear mechanism ...

High-precision cylindrical sleeve inner wall closed special-shaped curved slot detecting device

The invention relates to a high-precision cylindrical sleeve inner wall closed special-shaped curved slot detecting device which is especially suitable for precise detection of the work curved surface of an inner wall closed special-shaped curved slot. The device comprises a workpiece spindle transmission system, a lathe bed, a depth feed shaft transmission system, a linear feed shaft transmission system, a detecting device, a numerical control system and an inductive micrometer. By linkage of a linear feed shaft and a workpiece spindle, the data of the inductive micrometer is collected and saved in a computer, precise detection of the work curved surface of the cylindrical sleeve inner wall closed special-shaped curved slot is achieved, and the machining precision requirements for the work curved surface of the high-strength and high-rigidity inner wall closed special-shaped curved slot can be satisfied.

Synchronous detection method for aspheric surface micro-structures of optical elements

Provided is a synchronous detection method for aspheric surface micro-structures of optical elements. The method includes the steps that a beam of laser light is emitted by a laser and is divided into two beams after passing through a first diaphragm, wherein one beam of the laser light is emitted on the surface of an object to be detected in an integrating sphere after being emitted on a focus lens; an photoelectric receiving device is installed on the integrating sphere and used for receiving scattered light of the integrating sphere, and a reflected light receiver is arranged on a portion in the reflecting direction of the light beam emitted on the object to be detected, wherein the reflected beam of light is absorbed through a light absorption device and enters a computer as the reference light beam after being subjected to photovoltaic conversion; scattered radiation Rd and reflected radiation Rs of the object to be detected can be measured through the devices, and then a subsurface ...

Planet initiative polishing device of optical elements and method

The invention relates to a planetary active polishing device of an optical element and a method thereof, which pertains to the technical filed of optical machine manufacturing and is characterized in that: a polishing die is flexibly connected with a power planetary polishing head by a ball head; a plunger piston pushes a push rod of the ball head to press the polishing die to the polishing surface of a work piece; a polishing head device adopts a four link rod locating mechanism; the polishing die is caused to make planetary power rotation by the transmission from the transmission of a planetary motor through a flexible shaft and a transmission mechanism; different orbital radiuses can be obtained by adjusting the position of the polishing die with an adjusting screw. The device and the method have the advantages that: the polishing die is flexibly connected with the polishing head by the ball head, thus being convenient for transmitting compressed air to the polishing head by an air duct ...

Combined device for boring, reaming, guiding and turning discharging of plate body deep hole

A combined device for boring, reaming, guiding and turning discharging of a plate body deep hole is characterized in that a spindle box, a cutter and a self guide system are arranged on an engine base in sequence from left to right; the self guide system comprises a guide sleeve and a workpiece; the tail end of the cutter is connected with a spindle of the spindle box; the spindle, the cutter, the guide sleeve and an unmachined bottom hole of the workpiece are concentrically formed; the cutter performs deep hole machining on the workpiece by the guiding of the guide sleeve; the finished hole finished by machining is used as self guide of the cutter for machining of the next stage; generated iron turning is discharged from the front part by a turning discharging system. The problem that the size precision and shape precision of hole machining as well as the deep hole machining are limited by a draw ratio is solved, the pressure cooling liquid turning cutting and continuous turning discharging ...

Bullet-tail full bounce detecting device

The invention relates to a bullet-tail full bounce detecting device capable of automatically detecting the full bounce tolerances of the bullet-tail bourrelets of mortar bullets, which is applied to the automatic production lines of mortar bullet assemblies and can overcome and make up the technical shortage and defect that the traditional bullet-tail full bounce detecting device fully relies on manual operation. The device is directly installed on a pipeline frame body, lifts bullet bodies from a pipeline traveling fixture through adopting an automatic lifting mechanism and supports the bullet bodies through a supporting position according to detecting requirements; the device realizes the axial position and radial compression of the bullet bodies through adopting an axial positioning mechanism and a compressing mechanism to prevent the bullet bodies from generating axial and radial pulsation when detecting, thereby ensuring measuring precision; the device drives a driving support wheels ...

High precision uniform numerical control polishing device of optical elements

The invention relates to a high-precision even digital control polishing device of an optical element, which pertains to the technical filed of optical machine manufacturing and is characterized in that: an A-axis overturned feeding system is driven by an A-axis servo motor; a work piece is driven by a worm and gear pair and a gear pair and does an overturning motion around the A axis; a C-axis revolved feeding system is driven by a revolving servo motor; a rotary table is finally driven by the worm and gear pair, thus causing the work piece to rotate around the C-axis; the worm and gear pair has the structure of an anti-backlash sliding block; in a power polishing head system, a polishing die can not only rotate transversely, but also can rotate in a planetary way. The device has the advantages of changing the position of a polishing point, ensuring the polishing position to be in a horizontal state all the time, determining the manner of high-precision even digital control polishing, ...

Variable tension adjustment and control device capable of being used for precision winding of optical fiber

The invention discloses a variable tension adjustment and control device capable of being used for precision winding of an optical fiber. The device comprises a releasing mechanism, a dance wheel adjusting mechanism, a tension detection mechanism and a panel, wherein a printed winding motor is used as a releasing motor of the variable tension adjustment and control device; a micro ball screw transmission pair is driven through a step motor to accurately change a rider position in the length direction of a swing rod; the position of the swing rod is detected by using an angle sensor, so that the swing rod is kept at a horizontal position in a moment balance state; the optical fiber tension after layer replacement winding achieves a new stable value requirement by changing the rider position, and precision detection and control of the horizontal balance position of the swing rod; thus variable tension adjustment and control during layer replacement winding of the optical fiber winding are ...

Determination method for components in inner and external layers of skin-core-structured dual-component high polymer fiber

The invention discloses a determination method for components in inner and external layers of a skin-core-structured dual-component high polymer fiber. The determination method comprises the following steps: placing the skin-core-structured dual-component high polymer fiber in a Hartz slicer and cutting out fibers; mixing potassium bromide with the fibers, carrying out grinding and tablet compressing so as to obtain a transparent compressed tablet and drying the transparent compressed tablet; installing the dried transparent compressed tablet on a transmission accessory of a Fourier infrared spectrometer for testing, setting a scanning range of 400 to 4000/cm and resolution of 1 to 4/cm and carrying out scanning 16 to 64 times so as to obtain an infrared spectrogram; and taking and drying a skin-core-structured dual-component high polymer fiber bundle, installing the fiber bundle on the crystal of a multiple reflection accessory of the Fourier infrared spectrometer, setting a scanning range ...

Test system and test method for light absorption heating performance of textile

The invention provides a test system and a test method for the light absorption heating performance of a textile. The test system comprises a test device, a signal acquisition device connected with the test device, and a data processing device connected with the signal acquisition device; the test device comprises a support frame, a light source device and a test table, wherein the support frame has a prismatic framework and comprises a plurality of vertical struts; the light source device is arranged on the vertical struts, can slide along the vertical struts and comprises a spot lamp; the test table is arranged at the bottom of the support frame and used for placing a sample to be tested, the test table comprises a temperature probe for sensing the temperature of the sample to be tested, and the temperature probe is connected to the signal acquisition device. By adopting the simple-structure and easy-to-operate system and method for testing the light absorption heating performance of ...

Honing technology and equipment for cylinder sleeve of engine

Precise angle drive device used in vacuum environment

The invention relates to a precise angle drive device used in a vacuum environment. The precise angle drive device comprises a support base, a connecting sleeve, a connecting base, a rotary platform which rotates around an X-shaft, a first ion source clamping arm, a second ion source clamping arm, a rotary platform which rotates around a Y-shaft, a driven rotary shaft, an ion source and a control system. The precise angle drive device is directly driven by a motor; compared with rotary motion systems which adopt rotary motors, gears and the like, the precise angle drive device is good for improving cleanness of a vacuum room as no intermediate transmission link exists and efficiently improves repeated positioning precision as no reverse motion gap exists. The precise angle drive device is compact and simple in structure, convenient to manufacture and install, high in motion response frequency of a transmission structure, fast in motion speed, and is satisfied with precise control requirements ...

Plunger spiral groove high-speed numerical control grinding technique and device

A plunger helix high-speed numerical-control grinding process and the equipment relate to the improvements on the machining process and the equipment of an engine component. The process is as follows: a CBD grinding wheel is adopted for improving the strength and the abrasion resistance of the grinding wheel; a high-frequency timing rigid electric main shaft is adopted for improving the smoothness of the main shaft in high-speed running; and air-cooling and vibrating systems are adopted for increasing vibration action, reducing feed and adding grinding wheel axial trace displacement. The equipment is as follows: the feeds of the transverse X-axis, the longitudinal Y-axis and the rotary A-axis adopt a numerical-control feed grinder, the main shaft is the high-frequency timing rigid electric main shaft, the air-cooling and the vibrating systems are adopted at the same time, and the grinding wheel is the CBD grinding wheel. The plunger helix high-speed numerical-control grinding process and ...

Device for highly-precisely machining inner hole in track shoe through single pipe reamer

The invention discloses a device for highly-precisely machining an inner hole in a track shoe through a single pipe reamer, and particularly discloses a device which can precisely machine the inner hole in the track shoe in a high-strength, high-rigidity, high-precision and high-efficiency mode. The device is composed of a tool main shaft transmission system, a liner feed shaft transmission system, a lathe bed, a hydraulic clamp system, a slide table transmission system, a tail top system and a numerical control system. The problems that during numerical turning in deep hole machining, a cutter bar vibrates, chips are difficult to break and discharge, the inner surface is scratched and a tool is hit are solved; the machining precision and surface roughness of the deep hole can be achieved through one-time flaring and drilling instead of ordinary drilling, flaring and reaming procedures; the manufacturing precision of machining of the inner hole in the track shoe is improved, the production ...

Numerical control polishing machine for optical elements

The invention relates to a digital control polishing machine tool of a non-spherical optical element with large caliber, which pertains to the technical filed of optical machine building and is characterized in that: the machine tool essentially consists of a base system, an upright column system and a crossbeam system; the base system comprises a base, an X-axis feeding system, an A-axis overturning feeding system and a C-axis revolved feeding system; the crossbeam system comprises a crossbeam, a Y-axis feeding system, a Z-axis feeding system, a power planetary polishing head and a polishing die. A four link rod locating mechanism is adopted to realize 16 translation of the polishing die; the machine tool has the advantages that: five-axis digital control and the manner of four-axis linking motion are adopted in the digital control polishing machine tool of the optical element; the overturning and rotating structure of a work piece is utilized, thus causing the polishing position to keep ...

Method for testing light and thin sample by cone calorimeter

The invention discloses a method for testing a light and thin sample by a cone calorimeter. The method comprises the following steps: cutting a light and thin sample to be tested into a pre-set size; drying the light and thin sample; calibrating all indexes according to a use method of the cone calorimeter; covering the light and thin sample to be tested with a tin foil and putting the light and thin sample into a sample combustion box of the cone calorimeter; putting a special bracket for fixing the light and thin sample; when the light and thin sample with the thickness of about 0.2mm is put into the sample combustion box, staking the light and thin samples according to a conventional testing requirement until the thickness is more than 3mm and putting the light and thin samples into the sample combustion box; and putting the special bracket for fixing the light and thin samples so as to prevent the situation that the light and thin samples are obviously warped and deviated in a combustion ...

Efficient numerically controlled polishing process and apparatus for great aperture aspherical optical elements

The efficient numerically controlled polishing process and apparatus for great aperture aspherical optical elements belongs to the field of precise optical machine technology. The polishing process includes: constituting polishing process model based on the profile data obtained through measurement with interferometer or other instrument, determining the machining path, speed, pressure and other parameters of the element under the control of computer to perform simulating machining, verifying the technological parameters based on the simulating machining results and determining the ultimate technological parameters, creating NC program and machining. The present invention has high machining efficiency and high machining precision.

Bullet-tail full bounce detecting device

The invention relates to a bullet-tail full bounce detecting device capable of automatically detecting the full bounce tolerances of the bullet-tail bourrelets of mortar bullets, which is applied to the automatic production lines of mortar bullet assemblies and can overcome and make up the technical shortage and defect that the traditional bullet-tail full bounce detecting device fully relies on manual operation. The device is directly installed on a pipeline frame body, lifts bullet bodies from a pipeline traveling fixture through adopting an automatic lifting mechanism and supports the bullet bodies through a supporting position according to detecting requirements; the device realizes the axial position and radial compression of the bullet bodies through adopting an axial positioning mechanism and a compressing mechanism to prevent the bullet bodies from generating axial and radial pulsation when detecting, thereby ensuring measuring precision; the device drives a driving support wheels ...

Nano modified pervaporation membrane material and preparation method and application thereof

The invention relates to a preparation method of a novel nano modified pervaporation membrane. In the method, the adsorption property of a photo-cured membrane is improved by adjusting the ratio of the required polar and nonpolar raw materials in a synthesis process of membrane extraction materials, adding nano SiO2 in the preparation process and modifying nano SiO2. Moreover, an ultraviolet (UV) photo-cured group can be introduced, so that the prepared membrane material has the characteristic of UV photo-cured glue and is used for preparing a selective pervaporation membrane. By treating the membrane with hydrofluoric acid with relatively low concentration, proper pores can be generated in the membrane surface due to the corrosivity of hydrofluoric acid against SiO2. In the method, by combining a selectivity-adjustable membrane extraction material synthesis method with a UV photo-curing technology for quick membrane formation, the prepared pervaporation membrane is structurally adjustable ...

Honing technology and equipment for cylinder sleeve of engine

The honing equipment consists of controller, honing agent feeder, honing head and fixture. During honing, the grinding sheet in the honing head is closed to the inner wall of cylinder sleeve and is driven by the honing head to perform vertical reciprocation and rotation while the abrasive, a mixture of silicon carbide and abrasive oil, is fed into the sleeve continuously. By using the technology and equipment of the present invention, the inner surface of the sleeve may have certain roughness, solidified layer and residual stress, and this is favorable to form discontinuous and evenly distributed oil storing holes, raise the fatigue strength, abrasive resistance and service life of the inner surface of the sleeve. The present invention can meet the requirement in raising power of booster engine and eliminate the environmental pollution of phosphorization.

Grinding device for intersection of circular conical surface and cylindrical surface of valve opening of pump body of monoblock pump

The invention discloses a grinding device for intersection of a circular conical surface and a cylindrical surface of a valve opening of a pump body of a monoblock pump. The device is suitable for grinding on the valve opening of the pump body of the monoblock pump with the intersected high-precision circular conical surface and cylindrical surface. Grinding on the circular conical surface and the cylindrical surface of the valve opening of the pump body is realized through one-time clamping, a grinding wheel and a clamp do not need to be replaced, the problem of low coaxial accuracy of center lines of the two surfaces caused by twice clamping is avoided, the conical surface of the grinding wheel is adopted to grind the conical surface of the valve opening of the pump body, and the cylindrical surface of the grinding wheel is adopted to grind the cylindrical surface of the valve opening of the pump body.

Numerical control strong torsional measurement test stand of torsion shaft

The invention relates to a numerical control test device capable of performing a large torsion measurement on a torsion shaft of a crawler-type running vehicle. A servo motor is used as a power source and is connected with a magnetic powder brake mechanism; torsional moment is applied to a tested torsion shaft by using a transmission mechanism of a large transmission ratio planetary gear to drivea cross slider combined mechanism and front and rear clamping mechanisms; and simultaneously an industrial control machine is used as a man-machine interface by which torsion shaft process parametersof different vehicle types can be set, wherein the parameters comprise torsion direction, torsion angle, torsion times, retaining time at the largest torsion angle and the like, and the man-machine interface has the functions of displaying and recording tested parameters. Through the test stand, the angle and torsion moment variation curves can be displayed in real time, the pretorsion strengthening ...

High-compactness precision linear driving device applied to vacuum environment

The invention relates to a high-compactness precision linear driving device applied to a vacuum environment, comprising a base. The high-compactness precision linear driving device is characterized in that the base is composed of an X-axis motion system, a Y-axis motion system and a Z-axis motion system sequentially from bottom to top; a second guide rail mounting plate of the Y-axis motion system is mounted on a first guide rail slide block connecting plate of the X-axis motion system by bolts; the bottom surface of an L-shaped frame of the Z-axis motion system is connected to a second guide rail slide block connecting plate of the Y-axis motion system by bolts; the Z-axis motion system can move linearly along an X axis and a Y axis; and the Z-axis motion system can move along a Z axis which is vertical to an X-Y plane, and an ion source incident angle operating system is connected to the Z-axis motion system by a bolt. Compared with a linear motion system adopting a rotary motor screw ...

Clamping device for focused ion beam equipment and focused ion beam equipment

The invention relates to a clamping device for focused ion beam equipment. The clamping device comprises a base; the device is characterized in that the device further comprises a rotating part which is rotatably arranged on the base; the movement mechanism is arranged on the base and is used for driving the rotating part to rotate; and the chuck is arranged on the rotating piece and is used for clamping a sample. The invention further relates to the focused ion beam equipment applying the clamping device for the focused ion beam equipment.

Concave-belly camshaft precision processing technology and device

The invention relates to a precision processing technology and a device for grinding a small concave surface of a concave-belly camshaft. The precision processing technology is applied to an oil pump camshaft and an air-distribution camshaft of a diesel engine, can overcome and make up the insufficiency and the defects of a small concave arc curved surface high-precision and high-efficiency grinding technology of the concave-belly camshaft and is suitable for processing various concave-belly camshafts efficiently. The device adopts a double-grinding-wheel grinding system which comprises a large-grinding-wheel grinding system for grinding the shape of a cam and a liquid floated small-grinding-wheel high-speed grinding system for grinding the concave-belly curved surface of the cam and precisely processing the cam curved surface finally, thus, the device number is saved, and the shape precision of the concave-belly camshaft can be satisfied. The running track of the small grinding wheel is ...

Efficient numerically controlled polishing process and apparatus for great aperture aspherical optical elements

The efficient numerically controlled polishing process and apparatus for great aperture aspherical optical elements belongs to the field of precise optical machine technology. The polishing process includes: constituting polishing process model based on the profile data obtained through measurement with interferometer or other instrument, determining the machining path, speed, pressure and other parameters of the element under the control of computer to perform simulating machining, verifying the technological parameters based on the simulating machining results and determining the ultimate technological parameters, creating NC program and machining. The present invention has high machining efficiency and high machining precision.

Device for processing high-accuracy cylinder sleeve inner wall closed special-shaped curved groove

The invention relates to a device for processing a high-accuracy cylinder sleeve inner wall closed curved groove, in particular to a device which can be used for integrally and precisely processing a high-intensity and high-rigidity cylinder sleeve inner wall closed special-shaped curved groove. The device consists of a workpiece spindle transmission system, a bed, a hydraulic clamp system, a tool milling spindle transmission system, a deep feeding shaft transmission system, a linear feeding shaft transmission system, a data acquisition feedback system and a numerical control system, improves the manufacturing accuracy, the integral intensity and the rigidity of the cylinder sleeve inner wall closed special-shaped curved groove, reduces the production period and cost, solves the key technical problems of deformation and vibration control of a processing tool in the numerical control milling process, wear and correction of a grinding wheel in the numerical control grinding process and the ...