12results about How to "Eliminate positioning errors" patented technology

This invention belongs to the field of additive-subtractive composite manufacturing technology, and discloses a five-axis linkage additive-subtractive composite machine tool and control system. The machine bed base assembly has left and right guide rail seats symmetrically fixed on both sides of its top. The worktable is fixed in the middle of the machine bed between the two guide rail seats. An integral crossbeam is mounted across the top surface of the left and right guide rail seats and can move linearly along the X-axis. Two independent machining units are mounted in parallel along the Y-axis on the integral crossbeam: the subtractive side crossbeam slide plate carries a subtractive slide block and a subtractive electric spindle actuator, and the additive side crossbeam slide plate carries an additive Z-axis slide table and a double-swing additive head. The worktable is divided along the X-axis into a subtractive-specific machining area, a composite machining area, and an additive-specific machining area. The two machining units can operate independently in their respective dedicated areas, or enter the composite machining area at different times to collaboratively complete the additive-subtractive composite machining. This invention combines high structural rigidity with machining flexibility, avoids secondary workpiece clamping errors, and significantly improves machining efficiency and accuracy.

This invention provides a system and method for the automatic assembly of screws on large antenna arrays. The system includes an assembly mechanism, which includes an end effector; a linear motion mechanism, on which the assembly mechanism is mounted and moves along a first horizontal direction under the drive of the linear motion mechanism; a lifting mechanism, disposed on one side of the linear motion mechanism along a second horizontal direction; the antenna array can move vertically under the drive of the lifting mechanism; a vision mechanism, fixed to the end effector, for acquiring feature images of screw holes on the antenna array; and a control unit, electrically connected to the linear motion mechanism, the lifting mechanism, the assembly mechanism, and the vision mechanism. The control unit controls the linear motion mechanism and the lifting mechanism to adjust the relative position of the end effector and the screw holes on the large antenna array, and completes the precise alignment of the end effector and the screw holes based on the feature images of the screw holes acquired by the vision mechanism, so that the end effector completes the screw tightening assembly.

This invention relates to the field of lawn maintenance technology, and discloses a fusion perception method, device, equipment, and medium suitable for autonomous mobile devices. By introducing dynamic inverse perspective transformation assisted by lidar, it achieves a visual image projected onto a three-dimensional real terrain. Combined with deep fusion of visual and lidar data, it generates a high-precision, semantically rich three-dimensional environment model. This model can effectively reflect the terrain undulations and obstacle distribution in complex lawn environments, achieving multimodal perception with good environmental adaptability and high real-time performance on a low-cost hardware platform, supporting accurate and safe navigation and efficient task execution for the autonomous mobile device. It breaks the strong assumption of an absolutely flat ground surface, utilizing real-time lidar data to construct a non-planar ground model, achieving deep fusion of visual and lidar information, thereby improving perception accuracy and robustness with low-cost hardware configuration.

This invention discloses a multifunctional analyzer combining CL-LIBS-LA-ICP-MS, comprising a laser optical path module, an electronic excitation system, a spectral detection module, a sample chamber, and a mass spectrometry detection module. The laser optical path module includes a laser source, a beam adjustment system, a scanning galvanometer, and a coaxial microscopic observation system. The spectral detection module includes a light signal collection end, an echelle grating spectrometer, a gated camera, and a timing control module. Another aspect of this invention discloses an analytical method, comprising setting the environment to vacuum and performing CL imaging scanning; selecting a LIBS test area based on the CL imaging scan image and performing LIBS scanning; selecting a third test area based on the LIBS scan results, filling the sample chamber with carrier gas, and performing laser ablation mass spectrometry detection. This invention eliminates the positioning error caused by sample transfer between multiple instruments during combined techniques, provides more comprehensive information on the structure and composition of the sample, and further improves the detection efficiency of the entire method through two screening test ranges.

This utility model discloses a machining fixture for the main boom of an aerial work platform, comprising: a machine tool worktable and an end positioning and clamping device, a rotary clamping device, and a tail-side pushing and clamping device mounted on the machine tool worktable. The end positioning and clamping device, the rotary clamping device, and the tail-side pushing and clamping device are arranged sequentially at the front, middle, and rear of the machine tool worktable, and the three can automatically and collaboratively clamp the main boom of the aerial work platform. This application achieves automatic positioning and multi-point collaborative clamping of the main boom workpiece, eliminating positioning errors caused by manual operation. The hydraulic drive system ensures synchronous operation of each clamping device, shortening the clamping preparation time. The adaptive adjustment mechanism is compatible with workpieces of different specifications, reducing the number of tooling changes. The composite clamping method disperses contact stress, preventing clamping deformation of thin-walled structural parts. The multi-directional constraint mechanism effectively suppresses machining vibration and improves the positional accuracy of hole machining.

The utility model discloses a multilayer printed circuit board blind hole inspection device belongs to the field of circuit board, a multilayer printed circuit board blind hole inspection device, including equipment base, the top of equipment base is fixed with the U -shaped equipment frame, and the bottom of U -shaped equipment frame inside is provided with industrial camera, and the top of equipment base is provided with the clamping mechanism for circuit board clamping, and the top of equipment base still is provided with the turnover mechanism for clamping mechanism turnover, and the clamping mechanism includes the U -shaped frame, and the one end bolt fixing of U -shaped frame has the fourth drive motor, through the setting of clamping mechanism and turnover mechanism, makes two U -shaped clamping post can hold the circuit board of different size to the blind hole detection of circuit board, makes the circuit board can turn over, realizes the double -sided automatic detection of circuit board, eliminates the positioning error caused by manual turnover, reduces manual intervention, improves detection efficiency.

The application discloses a laser cutting production line for chain manufacturing and relates to the technical field of chain production cutting tools. The production line comprises a positioning table, a first lead screw, a guide rod, a limiting block, a guide roller and a detection assembly, and is provided with a data acquisition unit, a data processing unit and a control execution unit. The detection assembly comprises a supporting table, a second lead screw and a laser sensor and the like structure, can collect material size and position signals, drive a servo motor and a driving motor to act after data processing, drive the displacement of the limiting block and the laser sensor, realize automatic centering positioning of the material and self-adaptive adjustment of the detection position, and simultaneously configure a closed-loop correction unit to correct the position of the limiting block in real time. The application can replace manual adjustment, improve positioning and cutting precision, adapt to processing of materials of multiple specifications, shorten the debugging time, reduce production cost, and improve the automation level and production efficiency of the production line.

This invention discloses a flexible material conveying and packaging device and its control method, including an input conveyor belt, a clamping platform, a blocking mechanism, a guiding clamping mechanism, a sorting platform, a transfer platform, a transfer mechanism, and an output mechanism. The blocking mechanism guides the material to the clamping platform; a vision detection unit identifies the orientation of the material's long side; the guiding clamping mechanism, driven by a first multi-axis robot, rotates to be parallel to the long side of the material, receives a single row of material, and transfers it to the sorting platform, repeating this operation to accumulate and form an initial aligned array of materials; the sorting clamps push and straighten the material to form a regular array; the regular array is moved to the transfer platform and precisely positioned by positioning clamps; the transfer mechanism, driven by a second multi-axis robot, loads the regular array into a box. This invention achieves high precision, high flexibility, and a compact layout for material sorting and boxing through two-stage sorting and multi-axis robot handling.

This invention discloses a multi-station three-dimensional shaft pulling device and its usage method for a high-speed film production line. The shaft pulling device includes a shaft pulling mechanism, a transverse movement mechanism, and an upper shaft mechanism connected sequentially along the conveying direction of the air-expanding shaft. The shaft pulling mechanism has a shaft pulling station, and the upper shaft mechanism has an upper shaft station. The shaft pulling mechanism and the upper shaft mechanism are respectively located on opposite sides of the transverse movement mechanism. In the transverse movement mechanism, the first transverse movement movable frame moves horizontally relative to the transverse movement fixed frame, and its extreme positions are the shaft pulling station and the upper shaft station. The second transverse movement movable frame moves horizontally relative to the first transverse movement movable frame, and its extreme positions are the opposite sides of the first transverse movement movable frame. The usage method is to place the multi-station three-dimensional shaft pulling device near the winding mechanism of the high-speed film production line. The air-expanding shaft is pulled out by the shaft pulling mechanism. The first and second transverse movement movable frames in the transverse movement mechanism move horizontally. After receiving the air-expanding shaft at the shaft pulling station, it is sent to the upper shaft station.

The utility model discloses a kind of battery and bluetooth device, wherein battery includes shell, electric core and insulation structure.The shell has accommodating cavity and the mounting hole being communicated with accommodating cavity;Electric core includes electric core main body and first tab, and electric core main body includes the first pole piece and the second pole piece woundly arranged, first tab is connected to first pole piece and extends to the outside of accommodating cavity via mounting hole along first direction, and first tab includes connecting portion, and connecting portion is located at the outside of accommodating cavity, for being connected with external circuit;Insulation structure is used to make first tab and shell insulation arrangement.Therefore, when the battery of the present embodiment is installed on bluetooth device, the extension direction of first tab can be directly observed to adjust the angle of external circuit, without the need to refer to the identification outside the shell, thereby eliminating the position error of first tab due to the installation error of electric core and top cover, thereby enhancing the elimination effect of external circuit on current noise.

This invention relates to the field of biomedical imaging and clinical monitoring technology, and discloses a lower limb wearable photoacoustic tomography hemodynamic monitoring device and imaging method, including an adaptive flexible detection front end, a main unit, and a pneumatic servo coupling subsystem. The front end integrates ultrasonic array elements, optical waveguides, and strain sensors. The pneumatic system controls the pressure of the flexible airbag based on hysteresis dead zone logic to maintain coupling stability and prevent frequent start-stop oscillations of the micro-pump. The optical subsystem uses a reference photodiode to acquire a single-pulse energy reference signal; the signal processing subsystem combines strain data and reflection peak time to correct the three-dimensional coordinates of the array elements; it introduces the energy reference signal for normalization to eliminate laser pulse fluctuation errors; it combines local curvature to generate compensation coefficients to correct acoustic beam divergence and decouple the actual blood flow velocity; and it performs sliding window integration processing on risk factors to suppress false alarms. This invention improves the monitoring accuracy and reliability of deep hemodynamic parameters under non-planar detection conditions.

This invention discloses a PCB boss coplanarity grinding device, relating to the field of PCB processing technology. It includes: a mounting frame comprising an arc-shaped cover, with a first support and a second support respectively on the left and right sides of the arc-shaped cover; a power assembly comprising a first motor mounted on the first support and transmission columns rotatably nested at both ends of the arc-shaped cover, the first motor and the transmission columns being connected via gear transmission, and a transmission shaft slidingly passing through the transmission columns; and a grinding assembly located between the two transmission shafts, comprising a main shaft, on which low-copper grinding wheels and high-copper grinding wheels are alternately sleeved. This invention, by alternately sleeved low-copper and high-copper grinding wheels on the main shaft, enables the high and low copper layers to achieve the required coplanarity after a single grinding operation. Furthermore, the grinding assembly and power assembly are quick and easy to assemble and replace.