12results about How to "High shaping precision" patented technology

The invention discloses a diffractive optical element design method based on automatic differentiation and a free-form surface technology, and belongs to the field of optical design. The implementation method comprises the following steps: expressing phase distribution corresponding to a diffractive optical element as superposition of multiple layers of local free-form surfaces; calculating the intensity distribution of the input light field which is modulated by the diffractive optical element and then propagated to a target plane through a scalar diffraction theory; and in combination with automatic differential and multi-scale optimization strategies, phase distribution is optimized by adopting a gradient descent method. The phase distribution of the diffractive optical element is represented by a continuous and smooth free-form surface, so that the phase surface is always continuous and smooth in the optimization process, the curvature distribution of the curved surface is further restrained in the optimization process, and the processing difficulty of the diffractive optical element is reduced; in the optimization process, random phases and phase singular points are avoided, and speckle noise is suppressed; the superposition representation phase distribution of multiple layers of local free-form surfaces is adopted, and a multi-scale optimization strategy is matched, so that the dependence on an initial phase can be eliminated, and the convergence of iteration is ensured.

The invention provides metal plate hydraulic shaping equipment which comprises a workbench and a hydraulic mechanism, a metal plate is placed on the upper surface of the workbench, a hydraulic assembly moves in the length direction of a door-shaped frame and comprises a hydraulic main body and a hydraulic stand column, and the hydraulic stand column penetrates out of the bottom end of the hydraulic main body. A distance measuring device is assembled on the outer wall of the hydraulic body and provided with a guide line, a bearing is assembled on the outer wall of the hydraulic stand column, the end, away from the distance measuring device, of the guide line is hung to the outer ring of the bearing, and a digital display instrument is assembled on the door-shaped frame and electrically connected with the distance measuring device and displays the extending distance of the guide line. The workbench is provided with a plurality of sets of material moving mechanisms, and each material moving mechanism comprises a material moving rail and a sliding device arranged in the material moving rail. The device is used for solving the problems that in the prior art, errors exist in measurement of the pressing distance of a hydraulic stand column, and placement and position adjustment of a large-mass metal plate on a workbench are inconvenient.

The invention relates to the technical field of automobile part machining, and discloses an automobile door frame stamping part high-precision shaping and correcting device which comprises a bottom plate and a top plate, stand columns are fixedly arranged at the four corners of the top end of the bottom plate, the bottom end of the top plate is fixedly connected with the bottom ends of the stand columns, and a sliding table in sliding connection with the stand columns is arranged at the bottom end of the top plate; a driving mechanism for driving the sliding table to ascend and descend is arranged at the top end of the top plate, a flat plate is arranged at the bottom end of the sliding table, a top mold is fixedly installed at the bottom end of the flat plate, screw rods are fixedly arranged at the four corners of the top end of the flat plate, and sliding rods in sliding connection with the sliding table are fixedly arranged at the top ends of the screw rods; by arranging a sliding rod, a spring, a gasket, a ring type pressure sensor and an adjusting mechanism, when a hydraulic cylinder drives a sliding table to move downwards, the spring is compressed between the sliding table and the gasket, rigid thrust of the hydraulic cylinder is converted into flexible pressure, and the spring can absorb pressure pulsation and mechanical impact of a hydraulic system.

The utility model relates to a cell module shaping mechanism, especially a cell module shaping device. A cell module shaping device, including the setting of push -pad group one and push -pad group two of the surface of the setting board for supporting cell module is set up mutually perpendicular, push -pad group one includes two mirror image settings push -pad no.

The utility model relates to the technical field of forging equipment, and provides a tank body shaping machine, which comprises a fixed seat, a big arm, a workbench and a driving head, the big arm is arranged on the fixed seat in a sliding manner and penetrates through the fixed seat; the workbench is arranged on the large arm, and a shaping die is arranged on the workbench; the driving head is slidably arranged on the large arm and used for driving the shaping die to expand. According to the tank body shaping machine, the fixing seat is arranged, and the large arm penetrates through the fixing seat, so that the tank body shaping machine can be carried on a heating furnace by virtue of the fixing seat, and the tank wall can be conveniently shaped by the worktable and the driving head; meanwhile, due to the fact that the penetrating structure is adopted, the length of the portion, located below the fixing base, of the large arm can be reduced, the shaping device is suitable for shaping the tank close to the tank opening, and the shaping range is expanded.

The utility model provides a shaping device. The shaping device comprises a carrier and a cover. The carrier comprises a base and a lower die fixed to the base. The lower die comprises a first lower die surface used for bearing a to-be-shaped product, the first lower die surface is in a wave shape, and a plurality of micron-sized first grooves are formed in the first lower die surface. The cover tool comprises a cover plate arranged above the base and an upper die fixed to the cover plate. The upper die comprises a first upper die surface. The first upper die surface faces the first lower die surface, the first upper die surface is in a wave shape, a plurality of micron-sized second grooves are formed, and the first upper die surface and the first grooves are arranged in a mirror image mode. The cover plate bears acting force to move towards the base to drive the upper die to apply downward pressure to the to-be-shaped product on the lower die, so that the upper die and the lower die jointly extrude the to-be-shaped product in parallel, the to-be-shaped product is pressed into the surface of the to-be-shaped product through the first groove and the second groove, classification before shaping is not needed, and shaping precision is improved.

This utility model discloses a mold side forming mold structure, including a mounting platform, a top pressing mechanism, a mounting snap-fit ​​mechanism, and a stabilizing mechanism. The top pressing mechanism includes a support frame and a snap-fit ​​rod. The mounting snap-fit ​​mechanism includes a locking spring block and a counter-tension spring rod. The stabilizing mechanism includes a rotating frame and a double-layer clamping ring. The top pressing mechanism provides overall stable support to ensure that the structure does not shake during the pressing process. The top pressing cylinder provides precise and controllable pressure to ensure the stability of the workpiece position during the forming process. The symmetrically designed side plates enhance the structural rigidity and improve the forming accuracy. The mounting snap-fit ​​mechanism realizes precise locking and unlocking operations and enables rapid locking and releasing of the snap-fit ​​rod. In conjunction with the guide groove, locking spring block, and counter-tension spring rod structure, the assembly convenience and locking reliability are improved.

The utility model provides a production line for directly forming a square longitudinal welded pipe, which belongs to the technical field of square pipe forming and comprises a feeding rack, a leveling rack, a rough forming rack, a single-side forming rack, a fine forming rack, an extrusion roller rack, a scraping welding rack, a polishing rack, a sizing rack and a square pipe straightening rack which are sequentially arranged along the moving direction of a square pipe. A plurality of rough forming racks are arranged, and a guide rack is arranged between every two adjacent rough forming racks; and a cooling water tank is arranged between the polishing machine frame and the sizing machine frame. According to the rough forming machine frame, the two sides of a steel belt are preliminarily bent, the guide machine frame is arranged between every two adjacent rough forming machine frames, and the steel belt and folded edges are corrected and guided after each time of bending, so that the final forming precision of a square pipe is improved, and the problems that the final error is large and the precision is poor due to accumulative errors are solved; after being polished, the primarily-formed square tube is cooled through the cooling water tank, thermal deformation is eliminated, and the sizing precision of the sizing rack is improved.

This disclosure relates to a hair treatment apparatus. A hair treatment apparatus for treating hair extending along the hair direction. The hair treatment apparatus includes an air outlet system for guiding airflow away from the hair treatment apparatus. The apparatus also includes a rotating connector for rotatably connecting the hair treatment apparatus to a handle portion, and the rotating connector is configured to bias the orientation of the air outlet system relative to gravity and / or the hair direction to a predetermined orientation, at least during use of the hair treatment apparatus.

The application belongs to the technical field of semiconductor packaging, and particularly relates to a device and method for shaping and bonding of a carrier tape flip solder metal electrode; the method comprises the following steps: positioning and sleeving an integrated device of a metal electrode and PI into a lower mold according to a positioning pin; sequentially sleeving springs on all guide pins of the lower mold; placing an upper mold on the lower mold so that guide pin through holes of the upper mold are aligned with the guide pins; vertically applying pressure to a middle position of the upper mold, and alternately tightening the pressure screws; when the gap between the upper mold and the lower mold is 2mm, stop tightening the pressure screws; placing a shaping clamp in the center of a pressure test table, and tightly pressing the upper and lower molds with a pressure of 150N; alternately tightening two fixing screws, and taking the shaping clamp off the test table when the feedback force is within the range of 150N+5N; the application has the characteristics of high efficiency, reliability, simplicity, practicality, good alignment, and effective reduction of welding stress.

The present application relates to the technical field of tunnel construction, and particularly relates to a tunnel concrete spraying and shaping trolley and a shaping method. The trolley comprises: a trolley frame assembly, the bottom of the trolley frame assembly being provided with a walking system, the trolley frame assembly being provided with a scanning device and an electrical intelligent system; a multi-arm splicing profiling and shaping system, the multi-arm splicing profiling and shaping system comprising a rotating frame, a centering sliding device, a plurality of shaping mechanical arms and a plurality of rolling devices, the centering sliding device being connected to the trolley frame assembly, the rotating frame being connected to the centering sliding device, the shaping mechanical arms being connected to the rotating frame, and the rolling devices being one-to-one connected to the shaping mechanical arms. The present application solves the technical problems that the scanning technology in the prior art cannot adapt to the high dust working condition under concrete spraying, the overall profile flatness of the sprayed surface is difficult to control, the shaping efficiency is low, and the shaping process is complicated when the tunnel concrete is sprayed and then shaped.

The utility model relates to the technical field of electrolytic copper production, in particular to an electrolytic copper shaping device which comprises a working table placed on the ground, a U-shaped frame is fixedly arranged on the working table, a hydraulic cylinder is arranged on the U-shaped frame, a pressing plate is arranged at the telescopic end of the hydraulic cylinder, an extending table is arranged on the back face of the working table, and a pressing plate is arranged on the extending table. And an electromagnetic guide rail is arranged on the extension table, a sliding block is arranged on the electromagnetic guide rail, a taking and placing mechanism is arranged on the sliding block, and the taking and placing mechanism is used for taking and placing the electrolytic copper sheets before and after shaping. The servo motor, the electric telescopic rod and the vacuum suction cup work cooperatively, copper sheets can be accurately grabbed, moved and placed, manual intervention is reduced, production efficiency is improved, automatic taking and placing of the copper sheets are achieved through the electromagnetic guide rail and the taking and placing mechanism, manual operation of workers is not needed, the risk that the hands are pinched by a press machine is thoroughly avoided, and production efficiency is improved. And potential safety hazards are obviously reduced.