14results 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.

The utility model discloses a calcium fluoride sludge building material forming and maintaining integrated device which comprises a feeding mechanism and a forming mechanism, a maintaining mechanism is arranged on the forming mechanism, the feeding mechanism comprises a feeding hopper, an equipment frame, a feeding frame and a second hydraulic telescopic rod, and the feeding hopper is fixedly installed on the equipment frame; the feeding frame is located at the lower end of the feeding hopper and slidably connected with the equipment frame, the second hydraulic telescopic rod is fixedly installed on the feeding hopper and drives the feeding frame, the forming mechanism comprises an upper pressing die, a lower pressing die, a third hydraulic telescopic rod and a fourth hydraulic telescopic rod, and the upper pressing die is slidably connected with the equipment frame through the third hydraulic telescopic rod; the lower pressing die is in sliding connection with the equipment frame through a fourth hydraulic telescopic rod. The device has the advantages of high integration degree, accurate automatic control and good curing effect, and solves the problems of low production efficiency, high blank breakage rate and poor product crack resistance caused by separation of molding and curing in the traditional process.

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.

The invention provides a high-order continuity maintenance and error control method in an STL curved surface reconstruction process, and relates to the technical field of three-dimensional modeling, and the method comprises the steps: obtaining the connection information of discrete data, constructing a continuous normal vector field based on spherical harmonic decomposition, carrying out the frequency domain processing of a vertex coordinate and a normal vector, and recognizing high-frequency details, and calculating a main curvature direction to determine an insertion control point, and iteratively optimizing the normal deviation until convergence. According to the method, the high-order continuity of the STL curved surface can be effectively kept, the reconstruction error is accurately controlled, and the geometric accuracy and quality of the reconstructed curved surface are improved.

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.

The utility model provides an interlayer bonding strength tester and an encoder assembly thereof, and belongs to the technical field of paper quality detection. The encoder comprises an encoder shell arranged between the rear end of a swing main shaft and a frame body, a grating disc is arranged in the encoder shell, the rear end of the swing main shaft penetrates through a main shaft hole of the encoder shell and is fixed to the grating disc, and a photoelectric sensor is arranged between the encoder shell and the grating disc. And at least one first bearing positioned outside the encoder shell is arranged between the swinging main shaft and the frame body. The bearing is externally arranged to block the transmission path of kinetic energy of the test swing rod to the interior of the encoder shell, non-contact angle measurement is achieved, interference of mechanical friction to signals is eliminated, energy consumption can be effectively reduced, and measurement precision can be effectively improved.

The invention relates to a high-voltage pulse deburring device and a using method thereof, and belongs to the technical field of electric vacuum device manufacturing, the high-voltage pulse deburring device comprises an ignition power supply unit, a pulse modulation and boosting unit, an energy power supply unit, a pulse forming network, a detection power supply unit and an output terminal, high-voltage ignition pulses are modulated by the pulse modulation and boosting unit; the energy power supply unit outputs a second direct-current voltage; and the detection power supply unit outputs a third direct-current high voltage and cooperates with the double-range leakage current detection meter to perform a withstand voltage test. According to the invention, the functions of ignition, ablation and detection are integrated, and the deburring process which is efficient, energy-saving, accurate and controllable in energy, free of damage to electrodes and simplified in process is realized through ignition and ablation separation design, pulse width and hot melting time constant matching, automatic switching of circuit isolation devices and safe interlocking of a control unit.

The application discloses a precision grinding method for a cutter assembly, the cutter assembly and application, and the cutter assembly has a precision ground cutter head, cutter square and cutter rod, and the precision grinding method comprises the following steps: welding the cutter head to the end of the cutter square which is processed by grinding to form an integrated cutter; coarsely grinding the cutter by fixing the cutter on a coarse grinding seat, determining the zero point of the cutter head, adjusting the first grinding wheel based on the cutter band parameters and the first grinding parameters and the zero point to coarsely grind the two sides and the end of the cutter head, and obtaining left and right cutter surfaces and a coarsely ground auxiliary surface; finely grinding the cutter by fixing the cutter on a fine grinding seat, determining the cutter reference surface, adjusting the second grinding wheel based on the second grinding parameters and the zero point to finely grind the two sides of the cutter head, and obtaining left and right cutter bands; and adjusting and positioning the finely ground cutter by performing a planar finishing treatment on the finely ground cutter and adjusting the cutter to be fixed on the cutter rod according to a preset rotation radius. The application can stably and efficiently prepare the cutter with high precision, excellent blade geometry and surface quality.

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.

The invention relates to the technical field of badminton racket manufacturing, and particularly discloses badminton racket frame preforming equipment and a forming process thereof. The equipment comprises a pressing unit, a jacking unit and an inner mold unit, the pressing unit fastens an upper outer mold and a lower outer mold through a V-shaped frame, and the forming surface of the outer mold is provided with a vacuumizing micropore and is connected with a vacuum generation device through an air pipe penetrating through the V-shaped frame; the inner mold unit comprises an elastic bag body and a top cover, profiling supporting assemblies are symmetrically arranged on the top cover, a hollow rod driven by a motor is arranged on a supporting and unfolding part of the inner mold unit, and an inner cavity of the elastic bag body is divided into a plurality of independent pressurizing areas. The jacking unit is provided with a partition plate capable of moving up and down. According to the technology, forming is completed through the steps of profiling supporting, forming of a temporary supporting face through stretching of a hollow rod, laying, retraction and remaining of a laminated layer, mold closing, vacuum adsorption, partitioned pressurization, heating curing, demolding and the like. According to the invention, the lamination adhesion is effectively avoided, the differentiated pressurizing, integrated supporting, heating and maintaining functions are realized, and the forming quality and the equipment maintainability are obviously improved.

The utility model discloses a latticed shell structure of a vertical face large-opening large-span ellipsoid, and relates to the technical field of latticed shell structures. Comprising a center node, a mounting mechanism for a vertical-face large-opening large-span ellipsoid reticulated shell frame is arranged on the outer side of the center node, the mounting mechanism comprises a clamping assembly, the clamping assembly comprises a positioning groove formed in the outer wall of the center node, and a first reticulated shell frame is clamped in the positioning groove; after the latticed shell frame on the outer wall of the center joint is installed, the screw rod is rotated to enable the supporting block to ascend through the telescopic sleeve rod, the supporting groove in the top end of the supporting rod on the outer wall of the supporting block is driven to conduct jacking, and the supporting rod is driven to rotate. And the supporting grooves are supported and clamped at the joint of the first reticulated shell frame and the second reticulated shell frame, so that the load is uniformly transmitted to the supporting blocks, additional supporting points are provided for the reticulated shell frames, and the rigidity and the stability of the whole structure are improved.