7results about How to "Guaranteed geometric accuracy" patented technology

This utility model discloses a busbar trunking cutting and shearing device, applied in the field of power distribution equipment processing technology. It includes a trunking plate B, with side plates B slidably connected to both sides of the inner wall of the trunking plate B. A connecting rod B is bolted to opposite sides of the two side plates B. Sliding sleeves are bolted to the top and bottom of the connecting rod B. This utility model uses concentric clamping to evenly distribute cutting stress, avoiding twisting or local deformation of the busbar trunking due to unilateral force, maintaining the geometric accuracy of the conductor arrangement, effectively offsetting vibrations generated by the contact between the tool and the material during cutting, reducing the risk of chipped edges, and avoiding tilted or stepped cross-sections caused by workpiece offset. Timely separation avoids slippage or tipping of the cut piece due to gravity and mechanical stress, reducing secondary injuries such as pinching and collisions. The separation action reduces continuous friction between the cutting surface and the tool, preventing the expansion of burrs and extending the tool's service life.

The utility model provides a kind of for special-shaped vacuum bag of special-shaped mould, the special-shaped mould includes the mould cavity of trapezoidal cross section;The special-shaped vacuum bag is set on the mould cavity and seals the mould cavity;The cross-sectional shape of the special-shaped vacuum bag includes the main body structure of convex letter shape, and the main body structure includes sequentially arranged from top to bottom center protruding portion, lateral recess portion and base portion.The special-shaped vacuum bag provided by the utility model can meet the requirement of air tightness and vacuum keeping when applied to special-shaped mould, ensure the forming quality of composite material, avoid bubble, void and other problems.

This invention discloses a robust 3D hair reconstruction method with adaptive Gaussian ellipsoids and complex lighting, relating to the fields of 3D vision and computer graphics. Addressing the problems of sparse Gaussian ellipsoid distribution, unreliable orientation supervision signals, and geometric and texture coupling interference in existing multi-view hair reconstruction methods under non-ideal lighting, this invention employs a two-stage approach. It utilizes anisotropic Gaussian units to implicitly encode hair orientation and directly transfers the photometric constraint gradient to hair nodes through hair-aligned Gaussian dual representation, achieving efficient and high-precision hair-level reconstruction. Simultaneously, an adaptive lighting preprocessing flow is constructed, using a visual language model to locate low-quality viewpoints and dynamically setting the upper limit of Gaussian density. A three-stage adaptive density strategy is used to fill geometric gaps. Decoupled two-stage optimization is employed to eliminate lighting bias and restore true hair color. Furthermore, confidence-weighted orientation loss and 3D interpolation-guided upsampling are used to improve the orientation field quality and constraint coverage.

This invention relates to the field of mechanical manufacturing technology and discloses a manufacturing process for a worm gear used in the dexterous hand of a humanoid robot, comprising the following specific steps: Step 1: Material selection and pretreatment; Step 2: Rough turning and semi-finish turning; Step 3: Thread forming; Step 4: Heat treatment process, placing the worm gear formed in Step 3 into a vacuum heat treatment furnace for further processing; Step 5: Fine grinding and polishing; Step 6: Cleaning and rust prevention treatment. This invention achieves austenitization by heating the worm gear to 820℃~880℃ at a rate of 8℃ / min~12℃ / min in a vacuum heat treatment furnace, holding it at that temperature for 20min~40min, followed by high-pressure gas quenching, with the cooling rate controlled at 60℃ / s~100℃ / s. A closed-loop control using an infrared thermometer ensures an axial temperature difference ≤15℃, effectively solving the problem of uneven temperature distribution caused by differences in cross-sectional dimensions.

This invention discloses a large-arc bend injection mold and molding method, belonging to the field of injection molding technology. The mold includes a moving mold, a fixed mold, and a core mold with a circular arc core; it also includes a demolding drive mechanism for driving the core mold and product to generate a first displacement away from the fixed mold; and a pointer-type rotary demolding mechanism, which includes a pointer push rod and a push ring rotating around the axis of the circular arc core. During demolding, after the product is lifted with the core mold, the pointer push rod drives the push ring to swing along the circular arc path to push the product out. This invention also reduces the covering force by performing pre-demolding through an assisted demolding mechanism and ensures the stability of the core mold during injection molding using a core positioning mechanism. This invention replaces the traditional hot bending process with one-time injection molding, solving the problems of low production efficiency, poor roundness, and easy cracking caused by thermal stress in existing technologies for large-arc bend pipes, significantly improving the geometric accuracy and operational reliability of the product, and is particularly suitable for ultra-high voltage converter valve cooling system pipelines.

This invention provides a wood cutting machine, including a negative pressure conveying device and a cutting device. The cutting device includes a support, a crossbeam, a first drive mechanism, a working arm, a second drive mechanism, and a cutting mechanism. The crossbeam is vertically and vertically mounted on the support; the working arm is horizontally and horizontally mounted on the crossbeam; and the cutting mechanism is mounted on the working arm via an angle adjustment structure. In use, the first drive mechanism drives the crossbeam to move vertically, the second drive mechanism drives the working arm to move horizontally, and the angle adjustment structure drives the cutting mechanism to swing within a preset angle range. This invention, through the coordinated operation of the first drive mechanism, the second drive mechanism, and the angle adjustment structure, achieves motion control of the cutting mechanism in three dimensions: vertical, horizontal, and angular. It can adapt to complex cutting needs, avoids dimensional deviations and roughness problems caused by manual cutting, reduces reliance on operator experience and skills, avoids extensive manual intervention, and reduces labor intensity.

The utility model relates to a kind of gasket ring adhesive medium forming devices, comprising: mould closing mechanism, it includes: upper die holder, upper die body, punch and lower die body, the upper die holder is movably arranged in one side of lower die body, the upper die body is connected to upper die holder, accommodating cavity and forming cavity are formed between the upper die body and lower die body respectively, the accommodating cavity is filled with medium;Forming mechanism, it includes: first sealing ring and second sealing ring respectively arranged in upper die body and lower die body, the first sealing ring and second sealing ring are respectively provided with first stop face and second stop face. The utility model can effectively solve the wrinkling defects caused by compressive stress in C-shaped cross-section bulging, while ensuring the geometric accuracy and increasing the material utilization.