136results about How to "Avoid Positioning Errors" patented technology

The invention discloses a fault location method based on primary and secondary fusion complete pole-mounted circuit breakers, and relates to the field of power distribution network fault judgment, and the method comprises the following steps: selecting one pole-mounted circuit breaker between pole-mounted circuit breakers of a power transmission line as a master device, and taking the other pole-mounted circuit breakers as slave devices; the main equipment is configured to be a pole-mounted circuit breaker with the best 4G / 5G signal or a pole-mounted circuit breaker closest to the main station; optical fibers are connected among the pole-mounted circuit breakers and ad hoc networks are formed; the pole-mounted circuit breakers are subjected to time synchronization through optical fibers. When the device is applied, devices on the whole line are cascaded through optical fiber communication, ultrahigh time precision is provided, the fault distance measurement accuracy is improved, the network safety problem is completely eradicated in an ad hoc network mode, the device is not affected by networks and regions, and active fault detection and fault distance measurement are achieved by actively sending pulse signals.

The invention provides a traction device and a control method.The traction device comprises a support, a sliding assembly, a linear motor and a clamping mechanism, the support is arranged on a traction plane, the sliding assembly is limited to move in the direction parallel to the traction plane, the traction end of the linear motor is connected with the sliding assembly, and the sliding assembly is dragged through controlled movement of the traction end; therefore, the clamping mechanism and the clamped tool move along with the sliding assembly. According to the traction device, due to the fact that the linear motor is matched with the sliding assembly, the problems that a traditional driving mode is insufficient in load capacity and limited in power output are solved, the limiting moving direction of the sliding assembly ensures that the tool is stable, further, the clamping mechanism ensures that the tool does not generate displacement or positioning errors in the clamping state, and by means of the technical means, the machining efficiency is improved. The problems that an existing traction device is insufficient in load, low in efficiency, poor in stability and inaccurate in tool positioning in the heavy tool traction process are effectively solved.

The invention discloses a remote sensing positioning marking device for land management surveying and mapping, and particularly relates to the technical field of land management surveying and mapping, the remote sensing positioning marking device comprises a base and a mounting seat, the upper end of the base is fixedly connected with a supporting frame, and the inner surface of the base and the inner surface of the supporting frame are jointly provided with a fixing assembly; the upper end of the fixing assembly and the inner surface of the mounting base are jointly provided with a clamping protection assembly. According to the remote sensing positioning and marking device for land management surveying and mapping, through the arrangement of the supporting mechanism and the lifting mechanism, the base and the supporting frame are used for supporting, meanwhile, the height of the supporting frame is correspondingly adjusted, stable positioning and marking can be achieved in different terrains and under the ground, and meanwhile by adjusting the height of the supporting frame, the positioning and marking efficiency is improved. It is ensured that the device is always kept in the optimal working state, surveying and mapping precision and efficiency are improved, supporting force can be stably controlled in a hydraulic mode, equipment deviation or inclination caused by uneven ground is prevented, and surveying and mapping data accuracy and reliability are ensured.

The utility model relates to bone hook coordinate mapping positioning equipment suitable for spinal surgery, which comprises a bearing rod, the bearing rod is connected with an adjusting rod through an adjusting shaft, a plurality of guide devices are arranged on the outer side of the bearing rod and the outer side of the adjusting rod, each guide device comprises a guide seat, and a bone power cutting groove is formed in the outer side of each guide seat. A bone hook groove is formed in the guide seat, and a plurality of bone hook assemblies are arranged in the bone hook groove through mapping assemblies. Therefore, the angles of the bearing rod and the adjusting rod can be properly adjusted, the physiological curve of the back of the human body can be fitted, and subsequent positioning errors are avoided. The angle of the guiding device can be adjusted, and a proper angle can be provided according to the mapping requirement. The guiding device can achieve stable positioning of the orthopedic power depth limiter installed subsequently, and sliding is avoided. The bone hook assembly can achieve accurate mapping of bone surface contact point coordinates, and the operation precision is improved.

The invention relates to the technical field of silver contact production, in particular to special-shaped silver contact continuous cold heading equipment which comprises a rack, and the rack comprises a first mounting plate and a second mounting plate; a stamping assembly is arranged on the first mounting plate, and a plurality of stamping heads are arranged on the stamping assembly; a feeding port, a transverse moving plate and a plurality of molds are arranged on the second mounting plate, a plurality of clamping assemblies are arranged on the transverse moving plate, and through cooperation of the transverse moving plate and the multiple clamping assemblies, the equipment can complete different procedures of multiple silver contact blanks at the same time, the production efficiency is remarkably improved, the clamping assemblies and the transverse moving plate move synchronously, and the production efficiency is improved. According to the silver contact blank conveying device, precise conveying of silver contact blanks among the dies is guaranteed, positioning errors possibly generated in traditional chain plate type conveying are avoided, and therefore the machining precision is improved, the clamping assembly loosens a workpiece in the stamping process, direct contact between a stamping head and the clamping assembly is effectively avoided, abrasion of the stamping head is reduced, and the service life of the device is prolonged.

The invention relates to vibrating diaphragm direct welding equipment and a vibrating diaphragm direct welding method for a moving coil and flat plate combined earphone. The equipment comprises a solder smearing mechanism, an image positioning mechanism, a laser source, a galvanometer mechanism, a spraying mechanism, a displacement mechanism, a controller and other key components. In the welding process, the device accurately recognizes the position of the metal ring through the image positioning mechanism, laser welding of a welding hole in the metal ring and laser cutting of a vibrating diaphragm base material outside the metal ring are achieved at the same time in one-circle scanning through the laser source and the galvanometer mechanism, and the size of the cut metal ring is equal to that of the vibrating diaphragm base material; complex steps and errors caused by independent positioning of the vibrating diaphragm in the prior art are avoided. The high-precision processing capability of the equipment ensures the precision and consistency of diaphragm manufacturing, and the production efficiency and the product quality are improved.

The invention discloses a laser marking quality automatic evaluation method based on machine vision. The method comprises the following steps of S1, collecting a laser marking image and performing preprocessing; s2, inputting the preprocessed image into an image segmentation network constructed based on FastSAM to generate a segmentation mask image; s3, extracting a marking area communication block according to the segmented mask image, and constructing an image sub-area set; s4, normalizing the sizes of the image sub-regions, constructing three-channel enhanced input, inputting the three-channel enhanced input into an image coding network constructed based on the OfficientViT, and extracting an image-level feature vector; s5, inputting the image-level feature vector into an ArcFace angle interval classification module, and outputting a defect type classification result; s6, calculating a multi-dimensional quality scoring index; and S7, inputting the multi-dimensional quality scoring indexes into a weighting function to generate a comprehensive scoring result, comparing the comprehensive scoring result with a qualified threshold, and outputting an evaluation result. According to the method, a region perception image segmentation strategy and a lightweight feature coding mechanism are combined, and automatic identification and quality evaluation of character defects in the laser marking image are realized.

The utility model relates to new energy automobile technical field especially, more particularly to a kind of automatic new energy automobile battery assembly platform lifting equipment, its technical scheme includes: displacement mechanism, operation platform is installed on the displacement mechanism, displacement mechanism one end rotatably installed has lifting mechanism, the lifting mechanism is used to guide vehicle to enter operation platform;Adjusting mechanism is movably inserted on the operation platform, and the adjusting mechanism is used to adjust the size of the reserved space for vehicle tire to enter on operation platform according to the wheel track of different vehicles.The utility model has the advantages of adapting to the wheel track of various vehicle models to realize the stable lifting of vehicle, solves the positioning error problem of existing lifting equipment when vehicle lifting positioning.

The invention discloses a multifunctional machine tool for gear end face finish machining, and relates to the technical field of gear machining, the multifunctional machine tool comprises a grinding assembly arranged on a rotating frame and used for machining the gear end face, a chamfering assembly used for chamfering a gear inner hole, and a reference block arranged on an operation table, the grinding assembly is provided with an end face contact piece corresponding to the reference block, when the grinding assembly is fed in the axial direction, the end face contact piece can make contact with the reference block, the chamfering assembly is installed on a lifting plate, and the lifting plate is further provided with a reference follower used for limiting axial operation of the chamfering assembly. The gear end face finish machining and inner hole chamfering device has the advantages that the end face grinding assembly and the chamfering assembly are arranged on the same rotating frame, the reference block serves as a unified axial reference datum, gear end face finish machining and inner hole chamfering machining can be continuously completed in the one-time clamping state, and the datum consistency between the two working procedures is effectively guaranteed.

The utility model relates to an accurate sampling device for a titanium alloy cast ingot. The device comprises a stand column, a pull rod bracket, a hinge, a rotating shaft, a pull rod ruler and a marking seal, the pull rod supports are evenly distributed on the periphery of the stand column in the circumferential direction, and the upper ends of the pull rod supports are hinged to the outer side of the upper portion of the stand column through hinges. The inner end of the pull rod ruler is connected to the outer side of the lower portion of the stand column through a rotating shaft rotating pair. And the marking seal is correspondingly arranged at the outer end of the pull rod ruler. According to the utility model, the accurate sampling of the cast ingot can be realized, and the relative position of each sampling point has high contrast, so that the accuracy of the analysis result of the component uniformity of the cast ingot is improved.

The utility model provides a kind of automatic alignment assembly device of single fuse and terminal cap, it is related to equipment technical field, and it includes: connecting piece, mould, guide component, pneumatic accessory and product material;Connecting piece includes base, dome, first lower connecting block, first upper connecting block, second lower connecting block, second upper connecting block and lower mould fixed block;Product material includes terminal cap and single fuse semi-finished product;Mould includes lower mould and upper mould;Dome and upper mould hole are located on the opposite face of upper mould respectively.Block hole, lower mould cavity, upper mould hole, dome are coaxial setting;Guide component includes first guide pillar, second guide pillar, first linear bearing, second linear bearing;First upper connecting block and second upper connecting block are fixedly connected with upper mould;Lower mould is provided with lower vent hole that is communicated with lower mould cavity;Upper mould is provided with upper vent hole that is communicated with upper mould hole;Pneumatic accessory is connected with lower vent hole and upper vent hole respectively.Improve production efficiency and product yield.

This utility model discloses a steel structure weld flaw detection scanning mechanism, relating to the field of steel structure inspection technology. The weld flaw detection scanning mechanism includes a base and a flaw detector mounted on the base, as well as a lifting assembly, an angle control assembly, a lateral movement assembly, and a moving assembly. This utility model, through the lifting assembly and the probe fixed on the lifting platform, can perform flaw detection on welds at high positions, improving detection efficiency. Simultaneously, the angle control assembly allows for arbitrary control of the probe angle, thus meeting the flaw detection needs of non-linear welds and improving the comprehensiveness and accuracy of flaw detection. The device, through signal feedback from the flaw detector in the lateral movement assembly and in conjunction with a PLC controller, can stop the probe's detection movement in real time when a weld defect is detected, thereby achieving precise positioning of the welding defect and avoiding positional errors caused by human error during handheld inspection.

This application discloses a coating fixture, including a first clamping plate and a second clamping plate. The first clamping plate is provided with a plurality of mounting slots and a plurality of first coating positions, which are arranged in a one-to-one correspondence. The mounting slots communicate with their corresponding first coating positions and are used to accommodate a quartz crystal wafer. The second clamping plate is connected to the first clamping plate and covers the mounting slots. The second clamping plate is provided with a plurality of second coating positions, which correspond one-to-one with the first coating positions. In the orthographic projection direction, the second coating positions and their corresponding first coating positions are symmetrically arranged about the center line of the mounting slot. The coating fixture of this application can ensure that the coating on the two surfaces of the quartz crystal wafer maintains concentric symmetry, which is beneficial for maintaining the key indicators such as the electrical performance and vibration characteristics of the quartz crystal wafer and improving the product qualification rate.

The invention discloses a high-power connector with low resistance and high heat dissipation for quick connection, and relates to the field of connectors, the high-power connector comprises a support frame, reeds and busbar clamping bodies, the two busbar clamping bodies are assembled on the support frame, the busbar clamping bodies are integrally formed stamping parts, and the surfaces of the busbar clamping bodies are not provided with holes, so that the high-current passing capacity is ensured; a clamping space is formed between the two busbar clamping bodies, a reed is assembled between one end, far away from the clamping space, of each busbar clamping body and the supporting frame, a rear contact is formed at one end of each busbar clamping body, a front contact is formed at the other end of each busbar clamping body, and under the action of the reeds, the busbar clamping bodies are in contact with the supporting frame. The rear contacts of the two busbar clamping bodies are enabled to clamp the second busbar, the busbar clamping bodies are enabled to be unfolded by taking the rear contacts as rotating points, and the front contacts of the two busbar clamping bodies are enabled to clamp the first busbar, so that the problem of position errors of the first busbar and the second busbar caused by manufacturing tolerance or external reasons is solved, normal transmission of current is realized, and an abnormal interruption phenomenon is avoided.

A transport system, a positioning device, a positioning method, a computer program product and a computer-readable recording medium. The positioning device comprises: a plurality of electronic tags arranged to be arranged at equal intervals along a line segment; and a fixed-frequency sampling module arranged to be able to move around the line segment. The fixed-frequency sampling module has two antenna parts and a positioning part. The positioning part is electrically connected to the two antenna parts. The two antenna parts couple the plurality of electronic tags and read the wireless radio frequency identification signals from the plurality of electronic tags at a fixed frequency. The positioning part estimates a coordinate on the line segment according to a plurality of identifiers and a plurality of intensity distribution curves from the wireless radio frequency identification signals. The antenna spacing between the two antenna parts is: d2=(n+0.5)×d1, d1 is a tag spacing between two adjacent electronic tags, n is an integer, and n≧0.

The utility model is suitable for the technical field of clamp, provides a kind of automobile side wall assembly clamp positioning pin subassembly, including positioning pin body;Pin head is movably connected in the bottom end of positioning pin body, and through-hole is opened in the pin head;Fixed groove is opened in the inside upper end of positioning pin body, and the inside of the positioning pin body in the top of fixed groove is equipped with thread groove, and the inside of the positioning pin body in the top of thread groove is equipped with through slot;Connecting rod is set in the inside of through slot, and the bottom end of connecting rod is fixedly connected with the thread rod extending to the inside of thread groove, and the bottom end of thread rod is fixedly connected with the fixed block extending to the inside of fixed groove.The automobile side wall assembly clamp positioning pin subassembly provided by the scheme utilizes four abutting structures, can be centrally clamped and positioned to positioning pin body inserted into the inside of positioning hole, ensure that positioning pin body and positioning hole are at the same axial center, reduce positioning error, and can improve the clamping property of positioning pin body and the inner wall of positioning hole.

The invention relates to the technical field of electronic component processing, in particular to an electronic component pin forming device which comprises a forming unit which comprises a machine body, a cutting assembly and a polishing assembly, and the cutting assembly and the polishing assembly are arranged at the top of the machine body. The feeding unit comprises a conveying assembly arranged on the top of the machine body. The device has the beneficial effects that through cooperation of the forming unit and the feeding unit, pin forming and grinding integrated machining is achieved, bending forming and fixed-length cutting are completed at the same time through one-time punching by means of cooperation of a waste discharge notch formed in a female die and a male die cutter, positioning errors and efficiency losses caused by step-by-step machining are avoided, meanwhile, a first air bag is arranged on the inner wall of a grinding frame, and machining efficiency is improved. The air bag pressing block on the back face of the adsorption assembly synchronously extrudes the second air bag, the friction piece is driven to be attached to the pin in a self-adaptive mode, the polishing pressure can be automatically adjusted without a motor, the structure is simplified, energy consumption and cost are reduced, multi-face synchronous polishing can be achieved, and it is ensured that burrs are evenly removed.

This utility model relates to the field of printing device technology, and in particular to a portable, trouble-resistant label printer. A portable, trouble-resistant label printer includes a printer body with an inner cavity, within which a paper jamming assembly and a guide groove are disposed. The paper jamming assembly includes: a connecting seat located on one side of the guide groove; a first paper jammer hinged to the connecting seat at a certain angle; a torsion spring, used to generate a restoring force applied to the first paper jammer when the angle between the first paper jammer and the connecting seat changes; and a second paper jammer movably mounted in the guide groove. This solution effectively solves problems such as difficult paper loading, high paper jam rate, severe printing misalignment, and difficulty in cleaning sensors in the prior art, significantly improving the user experience and reliability of label printers.

The application discloses a kind of new material foam detection tooling of yellowing resistance, it is related to new material detection technical field, including workbench, the workbench is fixed with positioning seat, and positioning seat is opened with recess for foam positioning, the workbench upper end surface is fixed with backplate, the backplate is opened with recessed guide groove in middle position, the guide groove below is provided with the guide rail fixed on backplate.The new material foam detection tooling of yellowing resistance, by switching structure, two sealed boxes integrated with ultraviolet lamp assembly and color difference instrument assembly are driven by single cylinder respectively, so that it can be sealed with the same positioning seat on sample in turn, so as to integrate traditional separate aging and detection process in one equipment, automatically switch working mode by pneumatic control, completely eliminate sample transfer link, avoid positioning error and human interference caused by secondary clamping, greatly improve the coherence of test process, degree of automation and reliability of result.

The invention discloses medical equipment and a digestive tract three-dimensional model modeling method and device. The method comprises the following steps: acquiring an acquisition pose set and an image data set; calculating a relative pose set according to the image data set; fusing the collection pose set and the relative pose set to obtain an absolute pose set; generating point cloud data of the alimentary canal according to the absolute pose set and the image data set; and generating a three-dimensional model of the alimentary canal according to the point cloud data and the image data set. According to the modeling method of the digestive tract three-dimensional model, the collected pose information and the pose information determined according to the image are fused at the same time, more accurate positioning is carried out by combining information in two dimensions, the precision of the three-dimensional model can be remarkably improved, the diagnosis and treatment quality of digestive tract diseases can be improved, and the modeling method has important social and economic benefits.

This utility model discloses a mold inspection device for rubber mold manufacturing. The key technical features include a base plate; a movable adjustment component is disposed on the upper surface of the base plate; a support seat is mounted on the upper surface of the movable adjustment component; a guide rod cylinder is mounted on the upper surface of the support seat; and a vacuum suction cup is mounted on the upper surface of the guide rod cylinder. A rubber mold body is adsorbed and disposed on the upper surface of the vacuum suction cup. The height adjustment of the rubber mold body by the guide rod cylinder enables the mold inspection equipment to measure and inspect rubber mold bodies of different specifications at accurate positions, thereby significantly improving the reliability and repeatability of the inspection results. Simultaneously, the precise adjustment of the movable adjustment component ensures that the mold maintains a consistent trajectory and position during movement, while the vacuum suction cup firmly and accurately fixes the rubber mold body, avoiding positioning errors caused by loosening or displacement, thus ensuring that each mold can be evaluated according to strict quality standards.

This invention discloses an aluminum extrusion die assembly, belonging to the field of aluminum composite processing technology. It includes a fixed die and a guiding part, as well as a composite processing part. The composite processing part includes a moving die, an execution part, a punching part, and a transmission part. The moving die is equipped with a locking part for automatic positioning when the forming is complete. The aluminum material is processed by the composite processing part. During the stamping stage, the pressure from the execution part is transmitted to the moving die through the punching part and the transmission part for forming. When the forming is complete, the locking part automatically positions the moving die and drives the transmission part to switch states, causing the pressure from the execution part to directly act on the punching part, punching and polishing the formed aluminum material. This invention integrates stamping, punching, and polishing into a single die assembly, requiring only one drive component to automatically complete multiple continuous processing steps, reducing equipment costs and failure rates, and improving processing efficiency and accuracy.

The application relates to a double-tank structure and an automatic detection device, the double-tank structure comprising a double tank, a variable-diameter column pin and a liquid inlet joint, the double tank comprising a first tank and a second tank arranged side by side, the first tank and the second tank being communicated through an overflow groove; a plunger hole is formed in the double tank, a part of the plunger hole is located at the position of the overflow groove and extends along the depth direction of the overflow groove to penetrate the double tank; a through hole communicated with the plunger hole is formed in the tank wall of the first tank; the variable-diameter column pin is slidably inserted into the plunger hole and can be sealed with the hole wall of the plunger hole; a ring groove is formed in the variable-diameter column pin; the liquid inlet joint is fixedly inserted into the plunger hole and located below the variable-diameter column pin; wherein the variable-diameter column pin can slide relative to the double tank under the push of the medium injected by the liquid inlet joint, so that the liquid inlet joint, the first tank, the ring groove and the second tank are sequentially communicated.

The invention relates to the technical field of automobile stamping part welding, in particular to an automobile stamping part welding clamp which is characterized in that a clamping mechanism is arranged on a driving table, an assembling mechanism is arranged above the clamping mechanism, and a detection mechanism is arranged on the assembling mechanism; according to the device, stable horizontal limiting can be conducted on the middle of the spoke, vertical positioning can be conducted on the rim, unified concentric limiting can be conducted on the spoke and the rim, balanced downward pressure can be synchronously applied to the middle and the outer edge of the spoke, and even radial pressure can be synchronously applied to the inner side of the outer edge of the spoke; the assembly clearance between the two parts and the deformation state in the stress release process of the spoke can be effectively detected; effective rigid limiting can be carried out on all spatial degrees of freedom, possibly causing relative deflection, of the spoke and the rim; the spoke and rim assembly can be directly welded without being conveyed, transferred and secondarily clamped.

The utility model relates to the technical field of ellipsometer application, in particular to an ellipsometer platform capable of synchronously adjusting light paths. An ellipsometric platform capable of synchronously adjusting light paths comprises a base and a parallelogram connecting rod mechanism vertically arranged on the base, and the parallelogram connecting rod mechanism comprises a first connecting rod, a second connecting rod, a first laser fixing plate, a second laser fixing plate, a fixing pin and an adjusting block capable of moving in the vertical direction; one end of the first connecting rod is hinged with the adjusting block, and the other end is hinged with the upper end of the first laser fixing plate; one end of the second connecting rod is hinged with the adjusting block, and the other end is hinged with the upper end of the second laser fixing plate; the lower end of the first laser fixing plate and the lower end of the second laser fixing plate are both hinged to a fixing pin. Based on the parallelogram principle, geometric forced synchronization of an incident angle and a reflection angle is achieved, angle adjustment is simple, and cost is moderate.

The present invention relates to the field of lathe feeding technology, specifically to a feeding mechanism and operation process of a high-precision lathe, including a pushing mechanism mounting frame, a pushing assembly is arranged under the pushing mechanism mounting frame, and a guide frame assembly is arranged above the pushing mechanism mounting frame, and the beneficial effects are: the pushing frame is driven by a cam guide rail to move backward under the guide frame, so that the rods fall into the fixed guide rails from the guide frame in sequence, and a pushing pad is added to the pushing frame so that when the pushing frame is reset, the rods on the fixed guide rails are directly pushed into the positioning moving frame, and the pushing guide rails arranged on the outer side of the positioning moving frame adopt a design of narrow front and wide back so that the positioning moving frame can continuously clamp the rods when moving so that they are fixed and moved accurately to the claw disk processing parts of the lathe, thereby avoiding position errors caused by the rolling of the rods, and solving the problem that when the rods are pushed by the push plates in the prior art, the round rods are prone to rolling, resulting in difficulty in calibrating the position with the claw disk.

The application discloses a machining device and relates to the technical field of part machining. The machining device comprises a clamping mechanism, a turnover mechanism and a working mechanism. The clamping mechanism is used for clamping and positioning a workpiece. The turnover mechanism can be connected with the clamping mechanism and is used for driving the clamping mechanism and the workpiece thereon to turn over. The working mechanism is arranged on one side of the clamping mechanism and is used for machining the workpiece. The turnover mechanism can be connected with the clamping mechanism and is used for driving the clamping mechanism to turn over so that the front surface and the back surface of the workpiece on the clamping mechanism are alternated. The workpiece is machined by the working mechanism. The continuous and automatic operation of double-sided machining is realized. The machining efficiency is significantly improved. After turning over, the position of the workpiece only changes in space posture. The relative position reference during back surface machining is consistent with that during front surface machining. Therefore, the position precision of drilling and tapping is greatly improved. The smoothness of subsequent screw assembly is improved. The final assembly quality of products is improved.

The utility model discloses a measurer convenient to operate, which belongs to the field of measuring appliances and comprises an arc-shaped plate, a vertical plate is fixedly connected to the bottom of the arc-shaped plate, a storage box is fixedly connected to the front side of the arc-shaped plate, and a rotating shaft is movably sleeved in the storage box; according to the measurer convenient to operate, through the arrangement of the arc-shaped plate, the vertical plate, the storage box and the tape, the arc-shaped plate can be directly clamped at the position 10 cm above the elbow cross grain of the arm of a patient, the tape is pulled to measure the arm circumference of the position, in this way, the arm circumference measuring process is simpler and more convenient, the measuring position does not shift, and the measuring accuracy is improved. According to the measuring tape for the arm circumference of the patient, position errors are effectively prevented, the rotating shaft, the mounting block and the rotating button are arranged, the measuring tape can be retracted after the measuring tape is wound by one circle, the measuring tape can be tightly attached to the arm skin of the patient, the measuring errors can be reduced, and therefore the arm circumference measuring result is more accurate.

A laser cutting conveying line belongs to the technical field of conveying devices, is used for conveying plate cutting, and comprises a frame, a waste conveying system, a positioning air cylinder, a conveying assembly, a guide assembly and a blocking assembly, and the waste conveying system is arranged in an inner cavity of the frame and used for conveying plate waste; the multiple positioning air cylinders are arranged above the frame in the front-back direction and used for restraining and guiding the plates in the front-back direction. According to the laser cutting device, the side edge constraint guiding system is matched with the end limiting structure, three-dimensional positioning control can be carried out on a plate, a track is corrected in real time, positioning errors are avoided, the cutting precision is improved, and efficient and stable operation of laser cutting operation is guaranteed; according to the automatic waste collecting and conveying system, waste generated by laser cutting of the plates is automatically conveyed, centralized treatment of the waste is achieved, the equipment cleaning and maintaining period is greatly shortened, and the links of plate conveying, cutting, waste collecting and the like are effectively integrated.

The application discloses a photogrammetry target and positioning method for an on-orbit strong solar stray light environment, and belongs to the technical field of satellite antenna on-orbit shape measurement. The target comprises a central glass microsphere directional back reflection area and a low reflectivity edge area arranged at the periphery of the central glass microsphere directional back reflection area, and the low reflectivity edge area is used for forming a local low response transition zone between the central back reflection area and a strong stray light background. An original image containing the target is collected; a top hat transformation is performed on the original image to obtain an enhanced image; edge detection is performed on the enhanced image, and candidate areas are screened according to the geometric features of the target to determine a target effective area; the gray values of the corresponding areas in the original image are recalled, and a gray weighted centroid method is used to calculate the target center coordinates. The application solves the problem that the target edge cannot be identified in the strong solar stray light environment, and improves the stability and precision of the target center positioning.