49results about How to "Avoid micro deformation" patented technology

The invention relates to an ultraviolet light curing optical adhesive. By weight, the ultraviolet light polymerization optical adhesive comprises 50-100 parts of prepolymer, 20-90 parts of inertia resin, 35-70 parts of monomer, 5-12 parts of photoinitiator, 2-3 parts of coupling agents and 1-2 parts of addition agents. Contraction generated by curing of the ultraviolet light curing optical adhesive is very small, hardness of curing material is small, the flexibility of molecular chains is high and internal stress generated by curing is further absorbed.

The invention discloses an apparatus suitable for accuracy calibration of multiple-pipe material measuring one-way instrument. A high precision workbench 2 is provided on a base plate, one end of the workbench is provided with a universal fixture 3, an adjusting rack 5 arranging a standard displacement apparatus is provided on an appropriate position of a bar-shaped slot 4 of the workbench 2, a conical gauge chucking tool 6 is provided on the base plate at one side of the workbench 2. The invention can calibrate one-way instrument of each country, be used for the steel tube producing enterprise, the oil field mechanical manufacturing enterprise, the pipe material quality detection department and the pipe material using unit, also can be used as standard transferring means of country and locality metering departments.

The invention discloses a multi-roller calendering device which comprises a pressing mechanism, a gap fine-adjustment mechanism, a first pressing roller, a second pressing roller, a first calendering roller and a second calendering roller, wherein the first calendering roller and the second calendering roller are located between the first pressing roller and the second pressing roller. The first pressing roller drives the first calendering roller to rotate, and the second pressing roller drives the second calendering roller to rotate. Pressure of the pressing mechanism acts on the first pressing roller. The gap fine-adjustment mechanism is located between the first pressing roller and the second pressing roller and used for adjusting the working gap between the first calendering roller and the second calendering roller. Materials are subjected to calendering molding in the working gap. The multi-roller calendering device has the beneficial effects that pressure of the pressing mechanism acts on the corresponding pressing roller, uniform stress of the pressing rollers is applied to the calendering rollers in the longitudinal direction, the defect of uneven longitudinal arrangement of a lithium film due to the overlarge gap of the calendering rollers is overcome, and the defect of the uneven thickness of the lithium film due to deformation of the calendering rollers is also overcome.

The invention relates to a sealing and fixing device for testing an aerospace gyro motor in a high-temperature and low-temperature environment. The sealing and fixing device comprises an end cover, ashell, a base and a motor mounting bracket; the end cover is fixedly connected with the upper end of the shell through threads; high and low temperature resistant silica glass is mounted in an upper glass interlayer mounting concave table of the end cover and a lower glass interlayer mounting concave table of the shell; an upper sealing ring and a lower sealing ring are embedded in an upper annular groove of the end cover and a lower annular groove of the shell respectively, and the upper sealing ring and the lower sealing ring are distributed to be tightly attached to the upper end face and the lower end face of the high-temperature-resistant and low-temperature-resistant silica glass; the shell is arranged above the base, the flange end of the shell is fixedly connected with the base through screws, and the annular boss at the lower end of the shell is in insertion fit with the annular groove in the upper end of the base in a clearance fit mode. The motor mounting bracket is arrangedin the annular groove in the upper end of the base, and the motor mounting bracket and the base are fixed through screws and positioned through positioning pins. Under the temperature environment within the range of -10 DEG C to +80 DEG C, a stable working state can be provided for the motor.

The invention discloses a three-section crawler telescoping airplane traction device. The airplane traction device comprises a head assembly (1), an outer cylinder assembly (2), a telescopic sleeve assembly (3), an airplane wheel connector (4), a capstan assembly (5) and a lifting mechanism (6), wherein the outer cylinder assembly (2) comprises an outer cylinder (201) and a case boy (202); crawler-type bearings (203) are arranged on the side walls of the case body (202); the telescopic sleeve assembly (3) comprises a telescopic rod A (301), a guide head (302), rolling wheels (303) and rotating shafts (304); the head assembly (1) comprises a telescopic rod B (101), a shaft sleeve (102), a pull-ring connector (103) and a pull ring (104); the telescopic rod B (101) and the telescopic rod A (103) are arranged in the outer cylinder (201) in a sleeving manner. The airplane traction device disclosed by the invention has the benefits that the airplane traction device can quickly stretch out and draw back, is convenient to operate, and has no loose components; the whole airplane traction device is convenient to park and store, and carry and transfer, and the ground area occupied by the airplane traction device during transfer is reduced.

The invention relates to a shell assembly of a high-speed optical signal transmitting device and the high-speed optical signal transmitting device. The shell assembly comprises a shell, a heat sink substrate, a laser and a driving chip, the heat sink substrate, the laser and the driving chip are packaged in the shell, and the laser and the driving chip are adjacently placed on the heat sink substrate according to the axis direction of the shell. The driving chip and the laser are adjacently arranged on the heat sink substrate and packaged in the shell, so that a connecting line of the driving chip and the laser is as short as possible, long wiring between the driving chip and a semiconductor laser is avoided, the parasitic inductance and the parasitic capacitance caused by the long wiring are reduced, and the use bandwidth of a light emitting device is improved, so that the high-speed optical signal transmitting device can easily work at the speed of 25Gb / s and above, and is more suitable for being applied to the high-speed optical communication devices. Meanwhile, a non-turning linear light path design is adopted, a part of light turning elements and procedures are reduced, and the cost of the high-speed optical signal transmitting device is effectively reduced.

The invention discloses a processing and developing process of an intelligent automatic gearbox. The processing and developing process of the intelligent automatic gearbox comprises the following operation steps that S1, a blank is casted; S2, a bottom plane after rough milling is used as a rough reference surface, and during rough milling, a filler block is fixed to a gearbox body blank; S3, a bottom plane after finishing milling is used as the finishing reference surface, and during finishing milling, a filler block is fixed to a gearbox body blank; S4, hole processing is carried out; S5, front steps on the front of the gearbox body blank is subjected to rough milling and semi-finish milling in sequence; S6, the bottom surface of the gearbox body blank is drilled and tapped to make threaded holes; and S7, fine boring is carried out on shaft holes; S8, oiling and sealing are carried out after the cleaning inspection is qualified. The small deformation of a gearbox body under pressurecan be effectively avoided by additionally arranging the filler block on the inner side of the processing surface to effectively ensure the processing accuracy of the gearbox body. The method of simultaneous processing on two sides is adopted to avoid processing accumulation of errors when planes are changed.

The invention discloses a waterproof ceramic tile adhesive material which is prepared from the following components in parts by weight: 40-60 parts of cement, 40-50 parts of grading aggregate, 1-10 parts of mineral filling permeable material, 0.5-3 parts of water retaining agent, 0.1-1 part of antifoaming agent, 0.1-0.5 part of anti-sagging agent, 0.1-1 part of water repellent, 0.5-2 parts of superplasticizer, 2-5 parts of re-dispersible latex powder, 0.1-1 part of anti-cracking fiber, 0.1-2 parts of anti-saltpetering agent, 0.1-0.5 part of thixotropic lubricant, 3-5 parts of expanding agent, 0.1-0.3 part of early strength agent and 0.01-0.05 part of retarder. The waterproof ceramic tile adhesive material disclosed by the invention can be used for pasting ceramic tiles, realizes a waterproof anti-permeation function with low shrinkage and high compaction, has the characteristics of high bonding strength and strong environmental adaptability, and provides a guarantee to the building and personal safety.

The invention discloses a NCK high-speed servo feeder and a control method thereof. The feeder comprises a base, main engine boards are symmetrically arranged on the base, a lower roller and an upperroller are arranged between the main engine boards through a bearing, the lower roller and the upper roller are arranged in parallel and are matched to clamp a material, a servo motor for driving thelower roller and the upper roller to work is arranged on the base, the control method comprises the steps of switching the work mode of the servo motor between the displacement mode and the moment mode, clamping and loosening of the material are controlled, and the stamping precision is ensured; and a loosening assembly does not need to be arranged, control through one servo motor is achieved, theequipment cost and the control cost of the feeder are greatly reduced, and meanwhile, due to the fact that the loosening assembly easily damaged is abandoned, the service life of the feeder is prolonged.

The invention provides a pointing mechanism with a micro-vibration isolation characteristic, and the mechanism comprises a first flexible support device, a second flexible support device, an azimuth angle movement mechanism and a rotary disc bearing gear, wherein the bottom of a pitching support base is fixedly connected to the azimuth angle movement mechanism; a first side ring of the first flexible supporting device is fixedly installed on the inner side of one end of the pitching supporting base, a fourth side ring of the second flexible supporting device is fixedly installed on the inner side of the other end of the pitching supporting base, one side of a first lug plate of the pitching platform is fixedly installed on a second side wheel, and the other side of the first lug plate is fixedly installed on a first driven wheel. One side of the second lug plate is fixedly installed on the third side wheel, and the other side of the second lug plate of the pitching platform is fixedlyinstalled on the second driven wheel. And a driving bevel gear of the driving mechanism is meshed with the driven bevel gear. According to the invention, the rigidity of a local structure on a micro-vibration transmission path can be reduced, and micro-vibration is isolated, so that the influence of micro-vibration on the control precision of the pointing mechanism is effectively solved.

The invention relates to a micro-deformation control process for a split axle box body. The micro-deformation control process specifically comprises the following steps: carrying out blank casting onan upper box body and a lower box body separately; carrying out rough machining on single elements; carrying out heat treatment on the single elements; carrying out finish machining on the single elements; carrying out box combination, machining a bearing hole, a node hole and the two end surfaces of the axle box body and a node, machining a labyrinth groove in the inner surface of the bearing hole as well as a shock absorber seat, a cowcatcher installation seat, a top surface, a bottom surface and a cylinder which surround the axle box body by taking the machined bearing hole, node hole and end surfaces as location reference; carrying out semi-finish milling and boring for the bearing hole; carrying out box splitting, and then placing the box bodies under a room-temperature condition andcarrying out aging treatment separately; carrying out fine trimming on a box splitting surface; carrying out box combination and carrying out semi-finish milling and boring for the bearing hole; carrying out box splitting, and then carrying out polishing; and carrying out box combination again, detecting the axle box body subjected to the box combination, and then carrying out sand blasting and painting. According to the micro-deformation control process disclosed by the invention, the micro-deformation of the axle box body is prevented and controlled simultaneously in many aspects through reasonable optimization for a process flow and optimization for process parameters, so that the product pass percent is increased, the production period is ensured, and the production cost is lowered.