8results about How to "Achieve high-precision assembly" patented technology

The invention belongs to the field of nuclear power, and discloses a method for controlling butt welding straightness of a thick-wall stainless steel pipe, which comprises the following steps of: processing a welding groove of the stainless steel pipe; the machined steel pipe is assembled; spot welding and fixing; rotating the workpiece to measure the rotation jerk value of the workpiece, and recording a first displacement value; backing welding is conducted on a weld joint; repeating displacement value measurement again to obtain a second displacement value; the two displacement values are compared, and the straightness deformation direction and size after one weld joint is welded are determined; the welding starting position is adjusted to the reverse side where the welding deformation direction is determined; carrying out filling welding; and repeating the second displacement value acquisition until the stainless steel pipe is welded. A special weld groove is used, gapless assembly is performed, and a specific spot welding process is matched; according to the method, an automatic argon arc welding method is used, welding deformation of each welding seam is monitored in the welding process, and the direction of an arcing point of the next welding seam is controlled according to the current deformation direction, so that the straightness of the large-wall-thickness stainless steel pipe after butt welding is controlled.

The invention relates to a thin-wall complex flow channel liquid cooling structure high-energy beam welding method, and belongs to the field of metal materials and processes. Manufacturing an assembling and shape correcting clamp; the fixed base is horizontally placed, and the thin-wall complex flow channel liquid cooling structure is horizontally placed on the upper surface of the fixed base; horizontally placing a cover plate on the upper surface of the thin-wall complex flow channel liquid cooling structure; a pressing plate is horizontally placed on the upper surface of the cover plate; the pressing plate is fixedly connected with the fixed base through a tensioning screw; spot welding is conducted on the cover plate, and after spot welding is completed, the pressing plate is dismantled; formally welding the cover plate; after welding is completed, stress relief annealing treatment is conducted at high pressure and high temperature, and forming is conducted; according to the method, the welding seam is smooth and good in forming after welding, the internal quality meets the QJ20645-2016 requirement, the pressure of the laser welding seam is maintained for 60 min under 0.8 MPa, the laser welding seam is fatigued for 1000 weeks under 0.8 MPa, the leak rate is smaller than or equal to 1.0 * 10 <-10 > Pa.m < 3 > / s, the strength coefficient of a laser welding joint is larger than or equal to 0.9, and the flatness is smaller than or equal to 0.2 mm.

The present application relates to a kind of pipeline digital manufacturing-oriented pipeline butt joint method. Including by means of target ball, a plurality of robot coordinate system is unified to tracker coordinate system, then joint or tee is installed on the clamping mechanism of robot end, respectively scans joint or tee installed on the mechanism of robot end using scanner, point cloud registration is carried out to the design model and scanning model of joint and tee, the conversion matrix between design model and scanning model is calculated, while analyzing the relative pose relationship between each joint and tee of design model, the motion planning of joint and tee from initial position to terminal position is realized using robot off-line programming, if there is no interference, robot moves to corresponding position, the section of conduit with slot is put into circular positioning slot by hand, and the positioning butt joint between pipeline and joint is completed. Further realize automatic assembly, speed up pipeline digital manufacturing process.

The application provides a motor assembling device and method of an electric composite turbocharger, and belongs to the field of ship power turbochargers. The assembling problem of an integrated motor of an electric composite turbocharger is solved. The motor rotor of the device is fixed on a compression impeller, a guide block is installed on the motor rotor shaft, a motor stator is fixed outside the motor rotor, the motor stator is installed on a motor support frame, a centering flange and a tension and compression flange are sequentially installed behind the motor stator, a locking flange is installed at the center of the centering flange, a tension and compression screw rod passes through the locking flange and the tension and compression flange, one end of a motor guide rod is axially fixed with the motor support frame, and the other end is fixedly positioned with the locking flange. The application has the advantages of ingenious design, convenient installation, efficient assembling and the like.

This invention discloses a single-lock curtain wall with a non-intrusive clamp hoisting component and its construction method, belonging to the field of building curtain wall technology. It solves the technical problems of traditional post-installed embedded components damaging the main structure, difficult rebar installation, low installation accuracy, and poor adaptability. The single-lock curtain wall includes a post-installed clamp assembly, a beam structure, a reinforced load-bearing component, a hoisting cable assembly, and a curtain wall assembly. The post-installed clamp assembly consists of a load-bearing plate, a tie plate, a reinforcing plate, and a hoisting plate. It forms a ring-shaped non-intrusive structure by bonding and welding with architectural AB adhesive. Combined with the differentiated reinforcement structure of the beam structure, it achieves uniform load transfer. The construction method includes on-site material customization, non-intrusive installation of the clamp assembly, precise curtain wall suspension, and intelligent monitoring with a total station. The monitoring system captures millimeter-level displacement through a prism, forming a closed-loop control of measurement-feedback-adjustment.

The application relates to the technical field of ultrasonic riveting, and relates to a 224G high-speed wire harness assembly method and system based on ultrasonic riveting, which comprises the following steps: pretreating high-speed wire harness raw materials to obtain pre-riveting wire harness; aligning the pre-riveting wire harness with a pre-constructed target connector to obtain a wire harness to be riveted; riveting the wire harness to be riveted by using ultrasonic parameter values, environmental temperature values and riveting time, monitoring the wire harness to be riveted in real time based on a riveting monitoring instruction, obtaining a compression offset value and an energy absorption value; obtaining an updated ultrasonic frequency value by using a fuzzy control algorithm based on the compression offset value and the energy absorption value, obtaining a pre-confirmed high-speed wire harness by using the updated ultrasonic frequency value; performing quality detection on the pre-confirmed high-speed wire harness to obtain a target high-speed wire harness, and realizing the assembly of the high-speed wire harness based on the target high-speed wire harness. The application can realize high-precision assembly of high-speed wire harness by using ultrasonic riveting.

The utility model relates to the technical field of shaft sleeves, in particular to an assembly structure and an assembly type shaft sleeve, which comprise a clamping seal plate, the clamping seal plate is mounted at one end of a shaft sleeve body, an assembly ring is integrally formed on the surface of the clamping seal plate, the assembly ring is inserted into one end of the shaft sleeve body, a screw rod is fixed on the surface of the assembly ring, the screw rod penetrates through the shaft sleeve body, and the shaft sleeve body is fixed on the assembly ring. One end of the shaft sleeve body is screwed with a nut; the assembling structure and the assembling type shaft sleeve have the advantages that the assembling structure and the assembling type shaft sleeve are combined through the specific assembling structure so that high-precision assembling of the shaft sleeve can be achieved, the assembling process is simpler, more convenient and faster through the design of the assembling structure, and meanwhile the assembling precision and the performance of the shaft sleeve are improved.

The utility model belongs to the field of electronic manufacturing technology provides a kind of thick copper PCB printed board upper through reflow soldering pin's fixing device, the device includes fixed plate and sliding adjustment mechanism.The front of fixed plate is equipped with at least one clamping thick copper PCB printed board's circuit board clamping mechanism.The back of fixed plate is detachably equipped with the pin fixing mechanism corresponding with each circuit board clamping mechanism, and the pin fixing mechanism is clamped the pin to be welded to thick copper PCB printed board on it.Sliding adjustment mechanism is arranged on the back of fixed plate, and the position of pin in pin hole is adjusted along the vertical direction by relative motion drive pin fixing mechanism, so that pin protrudes or sinks into pin hole.The fixing device of the utility model hides pin completely in PCB inside in the stage of printing tin paste, and reliably exposes in subsequent process, which can solve the problems of unstable pin positioning, tin paste printing pollution, poor welding quality and inability to realize full-line automation in the prior art.