136results about How to "Eliminate machining errors" patented technology

The present invention provides a high-speed image acquisition and processing system. The system comprises a beam splitter prism, two CCD cameras, a camera adjusting device and an FPGA. The beam splitter prism is used for splitting incident light into two sub light beams to respectively enter the two CCD cameras. The camera adjusting device is used for adjusting the spatial positions of the two CCD cameras. The FPGA includes a camera timing control unit, an image synthesis unit and an image pre-processing unit. The camera timing control unit is used for sending pulse control signals, via two triggering wires, to the two CCD cameras to control the two CCD cameras to be triggered by time and make exposures at different times for acquiring images. The image synthesis unit combines the images of the two CCD cameras into a continuous image. The image pre-processing unit is used to pre-process the image. The high-speed image acquisition and processing system of the present invention achieves high-frequency image acquisition with low-frequency image sensors, so that the device cost is significantly lowered, the image collection acquisition is increased, and the system is particularly suitable for image acquisition and processing of high-speed moving object measurement.

The invention discloses a connecting structure used for a suspend-dome structure. The suspend-dome structure is a structure formed by connecting an upper chord single-layer spherical reticulated shell, an oblique cable and hoop cables through a vertical compression rod. In the connecting structure, the oblique cable, the hoop cables and the vertical compression rod are connected with each other through a welded hollow spherical joint. The welded hollow spherical joint forms three holes in the horizontal hoop cable direction, wherein two holes allow one hoop cable to penetrate the welded hollow spherical joint and be anchored through a cast anchor, the other hole allows a washer inside the welded hollow spherical joint to be anchored with a screw cap to form a connecting cable head, and the connecting cable head is connected with a threaded sleeve through the other hoop cable; the welded hollow spherical joint forms the other hole in the oblique cable direction, the washer used inside the welded hollow spherical joint is anchored with the screw cap to form the other connecting cable head, and the connecting cable head is connected with the hoop cables through the threaded sleeve. After the connecting structure is adopted, the construction of the suspend-dome structure is very convenient, the cable force can be adjusted times and again, and the disadvantage that the cable force in the prior suspend-dome structure engineering is difficult to be consistent with the theoretical value can be overcome.

The invention discloses a pedestrian protecting vehicle scriber used for a collision test, which comprises a movable base arranged in the Y direction, a horizontal moving rack, a longitudinal moving rod and a scribing rod, wherein the movable base is provided with a self-arranged leveling and fixing device; the horizontal moving rack and the movable base are in Y-direction sliding fit; a Z-direction extending vertical strut is fixed on the horizontal moving rack; the longitudinal moving rod is horizontally arranged on the vertical strut along the X direction; the longitudinal moving rod can horizontally slide along the X direction and the Z direction on the vertical strut and is locked and positioned; the scribing rod is arranged on one end of the longitudinal moving rod by a universal joint; and a space angle between the scribing rod and the longitudinal moving rod can be regulated at will. The pedestrian protecting vehicle scriber has the characteristics of low working intensity, high scribing efficiency and high scribing precision, is convenient and simple to operate, is convenient to move and saves space, can be made of belt trough aluminium profile, aluminium alloy plates and few steel materials to guarantee integral strength and have portability. The pedestrian protecting vehicle scriber is suitable for various vehicle collision test processes to serve as an auxiliary tool to carry out pedestrian protecting scribing operation.

The invention discloses an aviation structural part automatic avoiding clamp device. The device comprises a bottom plate, a clamping unit, a detection unit, a supporting unit and a tool setting element. The clamping unit comprises four rotary clamping air cylinders, every two rotary clamping air cylinders form a group, and the rotary clamping air cylinders are divided into a first rotary clampingair cylinder group and a second rotary clamping air cylinder group. The supporting unit comprises at least three supporting plates which are arranged on the bottom plate, and a straight line is evenlydistributed under a clamped part. By means of multi-point clamping, the contact mode of a clamp and the part is improved, and machining errors caused by most of the clamping factors are effectively eliminated. A sensor is used for accurate positioning and pneumatic element control, so that a machining tool is automatically avoided, and machining efficiency and the machining errors caused by repeated clamping are greatly improved. According to the device, machining requirements of the whole structural part of an aircraft can be efficiently met at high quality, and the operation is convenient and fast.

The invention discloses a curtain wall production and processing method based on a BIM technology, and belongs to the technical field of curtain walls. The curtain wall production and processing method comprises the following steps of S1, designing a drawing; S2, performing statistics on shared parameters; S3, performing node deepening arrangement; S4, performing location optimization; S5, performing software programming; S6, performing information statistics; S7, providing a drawing; and S8, processing and installing. In the construction preparation stage, the BIM technology is adopted, a curtain wall three-dimensional model is established first, and an external wall in the design is divided and subjected to typesetting; before factory production and processing, early mounting simulationcontrol is carried out, and relevant content of a curtain wall discharging list is checked, so that the occasions that material models, sizes and quantities do not fit real on-site conditions during later mounting, so that manpower, materials, the construction period and other costs are increased invisibly are reduced. Meanwhile, the appearance and cost risks of the project are integrally controlled in advance.

This holder process technology is once positioning, processing step of half-ball hole, rivet hole. It is ensuring the changable and raising processing precision.

The invention discloses an automobile door closure corner edge covering mechanism. The automobile door closure corner edge covering mechanism is characterized in that a lower step face is arranged at one end of a base, and lug shaft supporting blocks are arranged on the two sides of the lower step face respectively; an air cylinder base of an air cylinder is hinged to the lug shaft supporting blocks through pin shafts and can swing around the lug shaft supporting blocks to provide drive force; a pressing cutter is fixedly installed on the front end face of a pressing cutter installing block through a bolt, and the tail of the pressing cutter installing block is hinged to the end of a piston rod of the air cylinder through a pin shaft; the work face of the pressing cutter is provided with a profile matched with the workpiece corner closing digital analogy; and parallel four-bar mechanisms are symmetrically arranged on the two sides of the base and composed of two pairs of parallel connecting rods, the pressing cutter installing block and the base, the bottom ends of the connecting rods are hinged to the sides of the base, and the upper ends of the connecting rods are hinged to the sides of the pressing cutter installing blocks. The pressing cutter is driven through pushing of the air cylinder to carry out the edge covering action. The automobile door closure corner edge covering mechanism is stable in edge covering effect and good in forming performance.

The invention discloses an integrated grinding/turning mechanism of a grinding lathe for ball valve bodies, which comprises a lathe base (1), a ball-clamping device (51), a ball-jacking device (52) and a grinding-disc rotating control device (53), wherein the lathe base, the opposite surface of the grinding-disc rotating control device and the side edge of the ball-clamping device are respectively provided with a turning device (50); and the turning device is composed of a ball-turning saddle, a ball-turning sliding plate, a turning head assembly, a sliding-plate longitudinal movement control assembly and a saddle horizontal movement control assembly. By using the integrated grinding/turning mechanism disclosed by the invention, the head part of a machined part is clamped by the ball-clamping device, the tail part of the machined part is jacked by the ball-jacking device, the surface of the machined part is ground by the grinding-disc rotating control device, and the surface of the machined part is turned on a same machine by the turning device, thereby eliminating the processing errors caused by respectively carrying out grinding and turning on different machines, improving the surface grinding machining precision and quality of a workpiece (in particular to a ball valve body), and improving the operating efficiency.

It relates to the processing of electric lift that comprises the normalizing rough turning, fine turning, milling slot, calibration, fine grinding shaft radius, featuring in the rough turning before the fine one, with the processing of the small tapering hole C processing with the A and B end central hole, with pass rate reaching over 98%.

The invention relates to the field of precision machinery and aerospace optical technology, and in particular discloses a floating support device for on-ground gravity unloading of aerospace optical load, comprising an unloading base, and multiple sets of gravity unloading devices arranged on the unloading base. The gravity unloading devices are fixedly arranged under the optical load. The floating support device also comprises multiple sets of fixed support devices arranged on the back of the optical load. Gravity unloading in the direction of the gravity vector can be achieved by the gravityunloading devices, thereby offsetting the maximum deformation introduced by the gravity of the large optomechanical structure, and significantly alleviating the effect brought by the inconsistency ofsky-earth mechanics on the accuracy of on-ground installation and alignment as well as the quality of on-orbit imaging of aerospace optical loading. Therefore, the invention provides basic image quality for on-ground pre-installation and alignment as well as active optical correction for high-sensitivity optical components. In addition, through on-ground gravity unloading, the unnecessary designof the large aperture optical load optomechanical structure and the launching cost can be greatly reduced, and the use efficiency of the aerospace vehicle can be improved.

The invention discloses a testing table for detecting the relaxation of high voltage breaker closing spring stress, which comprises a substrate, a spring fixing plate, a spring moving platform, a screw rod fixing plate, a hand wheel and a speed reducer. The spring fixing plate and the screw rod fixing plate are fixedly arranged on the substrate; the spring moving platform is capable of sliding in the track of the T shaped groove arranged on the substrate through a T shaped sliding block. The spring fixing plate is provided with a plurality of pressure pulling sensors. The spring moving platform is provided with corresponding suspension ring screw nails. The to-be-tested springs are placed between the suspension ring screw nails and the pressure pulling sensors. The spring moving platform is connected with the screw rod fixing plate through a leading screw and nut mechanism; the screw rod fixing plate is provided with a clamping groove. The transmission screw rod of the leading screw and nut mechanism is provided with a clamping ring cooperating with the clamping groove. The hand wheel is connected to the end part of the transmission screw rod through the speed reducer. Through the hand wheel and the speed reducer, great torque is provided to the transmission screw rod so that the leading screw and nut mechanism can provide strong pulling force to the spring moving platform and that a plurality of the to-be-tested springs are tested at the same time.

The invention relates to the technical field of the aviation product manufacturing process and aircraft daily maintenance and guarantees, and particularly discloses a mechanical balance weight type airplane service support lifting platform. The mechanical balance weight type airplane service support lifting platform comprises an outer well lid assembly, an inner well lid assembly, a hand-lifting lock assembly, a foot-stepping lock assembly and a sliding bearing assembly. The outer well lid assembly comprises an outer well lid, fixed guide rails and a pulley assembly. The pulley assembly is installed on the outer sides of the fixed guide rails. The inner well lid assembly comprises an inner well lid, movable guide rails and a connection beam. The connection beam is installed on the inner sides of the two movable guide rails. The hand-lifting lock assembly is installed on the inner well lid. The foot-stepping lock assembly is installed on the connection beam. The sliding bearing assembly is installed on the movable guide rails. The movable guide rails slide along the fixed guide rails through the sliding bearing assembly. The mechanical balance weight type airplane service support lifting platform has the beneficial effects that the inner well lid is controlled to move and stop through mechanical locks, and the safety reliability is high; the sliding bearing assembly ensures that the inner well lid part operates stably, and the cable abrasion is relieved; and the pulley assembly prevents a balance weight assembly from interfering with other parts, and noise is reduced.

This invention relates to a kind of intelligence workpiece corrective system and its correcting method , includes the working table, PC machine, controller, strike hammer, one end of the said working table sets up signal collection device, the said signal collection device includes the scan device and processor connected mutually, PC machine links with the processor of the said signal collection device, the controller includes actuating mechanism and treatment element connected mutually, the treatment element of the controller links with the said PC machine, the actuating mechanism of the said controller links the strike hammer. And this system has adopt automation treating , has resolved the correcting problem of the cosh material and specially appointed stick type workpiece geared to the needs of medium-sized and small enterprises, has improved the production efficacy, and the system has decreased the correcting number of the workpiece on maximal degree, has removed various unnecessary treating error; On the other hand, has changed the tradition work manner that the scene work of the worker, has realized the long-range supervisory control to deformation workpiece, has kept away the noise and other bad factor's damage effect to the human body.

A drive control system of an optical scanning head comprises an upper following lens drive module, a benchmark lens drive module and a lower following lens drive module. The upper following lens drive module drives an upper following optical wedge to rotate, the lower following lens drive module drives a lower following optical wedge to rotate, and the benchmark lens drive module drives a benchmark optical wedge to rotate at a benchmark speed. The upper following lens drive module and the lower following lens drive module comprise an even automatic control adjuster, a phase difference measurement module, an upper following lens driver and a lower following lens. Locating signals of the optical wedges are collected by a hollow encoder, given phase difference signals are compared with phase difference signals collected between the upper following optical wedge and the lower following optical wedge, an error amount is obtained, a motor is driven to move according to motor rotation speed control signals newly generated by the error amount, rotation speed of the upper following optical wedge and the lower following optical wedge is changed until the error amount is in a permissible range.

The invention provides a laser etching preparation method for a surface array microstructure on the basis of a curved surface workpiece appearance. The method includes the steps that the free curved surface workpiece appearance to be processed is measured by the adoption of a reverse engineering method in a modeling mode, and design graph layout of the surface array microstructure is conducted on the basis of a reconstructed curved surface model; then, laser etching processing path planning is conducted on a design graph, the spatial orientation of a laser processing head relative to a free curved surface workpiece is adjusted according to a tangent plane where a processing path is located, a geometric center point and a corresponding outer-normal vector, laser beams are reflected to the free curved surface workpiece in the normal direction, and laser etching processing is conducted on geometric lines one by one. According to the method, it can be effectively guaranteed that the focus of the laser beams is located on the surface of the free curved surface workpiece all the time in the processing procedure or a certain defocusing distance exists between the focus of the laser beams and the surface of the free curved surface workpiece, a brand new accurate focusing laser processing method is provided, layout and processing errors of the surface array microstructure graph are completely eliminated, and accuracy and stability of laser etching processing technical quality are ensured.

The invention provides a machining method of a glass mold. The machining method comprises the following steps of parison casting, parison outer circular surface turning, mold matched surface milling, side surface positioning benchmark milling, spray welding, matched surface refining, machining of other mold parts and finished product forming. In the parison outer circular surface turning step, a correction outer circular molded line corresponding to the parison outer circular surface is obtained by utilizing an image processing technology, then a positioning hole is formed by adopting the correction outer circular molded line as the benchmark, the distance between the correction outer circular molded line and the parison outer circular surface is used as the turning removal, so that the irregular problem of the outer circular molded surface can be primarily solved. By adopting the machining method, the matching precision of the glass mold matched surface can be further improved, and the qualification rate of products can be effectively increased.

The invention discloses a photoelectric number-carrying method for a photoelectric direct-reading remote water meter. The method comprises the steps that when character wheel code tracks are arranged, the position of a photoelectric geminate transistor on a photoelectric emission small plate remains unchanged, the high-order code track is lagged by 5-10 degrees compared with the adjacent low-order code track, then a software algorithm is adopted for correcting high-order lagging, the software algorithm is that when the unit and the decade are both in the number carrying state, 10 is added to the hundred place; when neither the unit nor the decade is in the number carrying state, 5 is added to each of all other places except the unit; when the unit is in the number carrying state and the decade is not in the number carrying state, 5 is added to each of all other places except the unit and the decade; when all low-order places sequentially adjacent to high-order places are all in the number carrying state, 10 is added to each of the high-order places. By means of the photoelectric number-carrying method, when the character wheel code tracks are arranged, the high-order places of the character wheel code tracks are lagged, then the software algorithm is adopted for correcting high-order lagging, the situation that in the character wheel number carrying process, the situation that high-order character wheel number carrying is lagged behind low-order character wheel number carrying due to character wheel code track processing errors and photoelectric geminate transistor position errors is avoided, and a number carrying data error is avoided.

The invention relates to a gap-adjustable ultrasonic rolling device capable of stably outputting. The gap-adjustable ultrasonic rolling device capable of stably outputting comprises a pressing cap, anadjusting ring, a fixing cover, a sliding sleeve and a tool seat, wherein the pressing cap, the adjusting ring, the fixing cover and the sliding sleeve are hollow and sequentially connected in the axial direction, the tool seat is arranged on the outer side of the sliding sleeve in a sleeving mode, and the sliding sleeve is in sliding fit with the tool seat; inner cavities of the pressing cap, the fixing cover and the sliding sleeve are communicated with each other to form an installation chamber, the installation chamber is internally provided with a ball, a top cap, an amplitude-change lever and a transducer which are sequentially connected, the ball partially extends out of the outer wall of the pressing cap, and the amplitude-change lever is connected with the fixing cover; and the adjusting ring is arranged between the pressing cap and the fixing cover. According to the ultrasonic rolling device, the adjusting ring is additionally arranged between the pressing cap and the fixingcover, so that the ball clearance is controllable, the amplitude-change lever with a flange is adopted, the flange is arranged at the node position of the amplitude-change lever, the output effect ofthe amplitude-change lever is not influenced, and the amplitude-change lever is fixed at the same time, so that the output of the amplitude-change lever is more stable; and a spring is arranged at thelower end of the device to play a buffering and protecting role.