26results about How to "Accuracy impact" patented technology

The invention discloses a temperature rise control method adopting a microswitch to replace a water flow sensor. The temperature rise control method comprises the following steps that the microswitch detects that water flow passes through, heating is conducted for a period of time with the initial power P0, the temperature is made to rise from T0 to T1, the pre-judged water flow q0 in a pipeline is calculated according to a formula, and then the first heating power P1 is calculated according to the set temperature T and the water flow q0; the water body is heated at the first heating power P1, the power is finely adjusted through a PID algorithm, after the time delta t, the water temperature constantly reaches T < set >, at the moment, the second power P < constant > is recorded, the temperature rise rate v is calculated, and then the temperature rise rate v is compared with the standard temperature rise rate v < standard >; if the deviation between the temperature rise rate and the standard rate is within + / -10% and the output power is Pconstant, the PID algorithm is used for fine adjustment to control the heating power, so that the water temperature is constant to be Tconstant, the temperature rise rate is calculated and compared with the standard rate every time interval t1, and the previous step is returned to judge whether the deviation between the temperature rise rate and the standard rate is within + / -10%; if the temperature rise rate and the standard rate are not within the deviation range of + / -10%, constant heating is conducted for a period of time with P, the temperature rise delta T3 is calculated, qA is calculated, PA and output power PA are calculated according to qA, and the heating power is finely adjusted and controlled through a PID algorithm. The accuracy of water flow detection is not affected by incrustation, temperature rise is regulated and controlled according to the measured water flow, the constant temperature speed is high, better use experience is provided for a user, and the service life of a product is also prolonged.

The utility model discloses a machine tool lubricating system which comprises a main body unit, the main body unit comprises a lead screw sleeve and an adjusting lead screw, the adjusting lead screw is in meshed connection with the lead screw sleeve, one side of the lead screw sleeve is fixedly connected with a sliding block, a through hole is formed in the center of the sliding block, a sliding rod is arranged in the through hole, and the adjusting lead screw is arranged in the sliding rod. A sliding sleeve, a push rod and a push plate are arranged on the cross rod, two grooves are symmetrically formed in the two sides of the sliding block, an oil tank is fixedly connected to the upper end of the sliding block, a cavity is formed in the sliding block, an oil collecting hole is formed in the through hole and communicated with the cavity, and the two sets of lubricating assemblies are arranged. The piston plate is driven to move through the cross rod, the piston plate extrudes lubricating oil in the straight barrel, and the lubricating oil is sprayed to the sliding rod through the spraying pipe and the spraying head, so that the lubricating oil is added to the sliding rod in time, the subsequent machining precision of a machine tool is prevented from being influenced, and the product quality is guaranteed.

The utility model discloses an aquaculture feed nutritional ingredient detection analyzer which comprises an installation base, a vibration assembly is arranged at the top of the installation base, a discharging plate is arranged at the top of the installation base through the vibration assembly, and fixing plates are fixedly arranged on the front side and the rear side of the discharging plate. A screen is fixedly arranged between the opposite faces of the fixing plates. The aquaculture feed is screened by the screen mesh, so that the particle sizes of detected aquaculture feed particles are kept consistent, meanwhile, the screened aquaculture feed is subjected to vibration discharging by the discharging plate, so that the aquaculture feed uniformly falls onto the conveying assembly, and the aquaculture feed is detected by the detection assembly; the influence on the accuracy of the detected sample caused by the drifting of the spectrum base line of the feed sample due to stacking is avoided, the accurate analysis on the content of each component due to the mutual overlapping interference of absorption peaks is avoided, and the influence on the accuracy of the final detected sample due to different particle sizes is avoided.

The invention relates to a machine tool unit driven by an electric motor, comprising a stator unit (2) and a rotor unit (3), which has at least one rotor shaft (105) and can be rotated about an axis of rotation (D), said rotor unit (3) comprising at least one tool receiving unit, the tool receiving unit has a tool clamping device for fixing and clamping a releasably fixed shank of the tool (50), at least one tool sensor (5) is provided for detecting a load on the tool (50), and at least one electromagnetic drive system is provided for driving the tool (50) on the tool receiving unit. The machine tool unit has improved accuracy and / or by means of the machine tool unit, the accuracy of machining by a corresponding machine tool can be improved. This is achieved according to the invention in that at least one weakening structure (30) is arranged between the tool sensor (5) and the axis of rotation (D) in order to increase the mechanical offset when the tool (50) is loaded and / or when the loading situation of the rotor unit (3) or a component thereof changes.

The application relates to the technical field of steel structure engineering and discloses a fastening detection equipment for steel structure engineering, which aims to solve the problem that the detection position of a steel plate changes, thereby affecting the accuracy of detection data. The extension edge is arranged with the moving mechanism, the extension edge is used for limiting the front and back positions of the steel plate, the contact plate is used for limiting the left and right positions of the steel plate, the detection position of the steel plate is opposite to the pressing mechanism, and therefore the accuracy of detection data is avoided from being affected.

This invention provides a slide rail for a high-precision servo CNC punch press with a double-link toggle mechanism, comprising: a punching table, a punch press body, a punching device, a slider, and a slide groove. The punch press body is disposed on the top of the punching table. Two slide grooves are respectively formed on both sides of the inner cavity wall of the punch press body. A lead screw is rotatably mounted inside the slide groove. The slider is threadedly engaged with the outer surface of the lead screw. The punching device is fixedly connected to the surface of the slider. This invention provides a slide rail for a high-precision servo CNC punch press with a double-link toggle mechanism. By adding rollers to the surface of the punching device and allowing them to slide up and down inside a limiting groove, the double constraint of the lead screw and rollers maintains the accuracy of the punching device's sliding on the slide rail surface. This avoids the wear of the lead screw affecting the up and down movement of the punching device, preventing lateral forces that could affect the punching accuracy, thus meeting the processing requirements of precision parts and improving the practicality of the device.

This invention discloses a machine vision-based weld defect detection device for mechanical manufacturing welded parts, including a worktable, a camera mounted on a support, an image processing device mounted on the front of the top of the worktable, a cleaning mechanism mounted on a U-shaped frame, a water tank mounted on the top surface of the U-shaped frame with a mixing mechanism inside, a cleaning mechanism mounted on a second U-shaped frame, a fixing mechanism on the top surface of a second connecting rod, a connecting block fixed to the bottom of the second connecting rod, a servo motor mounted on the side of the worktable, and a drive mechanism mounted on the output shaft of the servo motor. This invention utilizes the coordinated use of adjusting component one, adjusting component two, the drive mechanism, the cleaning mechanism, and the tilting mechanism to first bring the welded part into contact with the grinding block, facilitating the removal of residual weld slag, spatter, and oxide scale from the weld seam. This prevents residual weld slag, spatter, and oxide scale from obscuring weld defects and improves the accuracy of weld seam detection.

The invention discloses a food microorganism rapid detection device for food detection, and relates to the technical field of food detection, the food microorganism rapid detection device for food detection comprises a fluorescence detector, one side of the fluorescence detector is fixedly connected with a fluorescence detection cabin, and the food microorganism rapid detection device for food detection is provided with a test column, a swab and a protective film cover; when the test column and the swab are pulled out from the inside of the test tube and the swab is moved to be close to food, the liquid bag piece is pinched, so that the fragile piece is disconnected from the limiting block, the limiting of the protective film cover is relieved, the protective film cover falls off from the outer side of the swab, and the phenomenon that the swab is damaged when the swab is used can be effectively prevented. In the prior art, a user does not move a swab to the vicinity of food, the swab is in contact with the surfaces of other objects due to carelessness of the user, the swab is polluted, and when the swab is used for collecting a food sample for food microorganism detection, the accuracy of a detection result is influenced, and the accuracy of a food microorganism detection result is influenced.

The application discloses a high-temperature ultraviolet ammonia monitoring device and relates to the field of ammonia monitoring devices.The device comprises a case, an air inlet pipe is installed on the case, a detection box is installed in the case, an air outlet pipe is also installed on the case, an air inlet branch pipe is installed on the right side of the detection box, an air outlet branch pipe is installed on the left side of the detection box, and the air outlet branch pipe is connected with the air outlet pipe; a sampling mechanism is arranged in the detection box and is used for separately sampling and sealing the detected gas; a channel switching mechanism is used for controlling the flow direction of the gas.The high-temperature ultraviolet ammonia monitoring device adopts the sampling mechanism, can realize the separate sampling and sealing of the dynamic measured gas, and can make the measured gas sample in a sealed space, thereby avoiding the influence of air flow turbulence on the accuracy of the detection data, avoiding the detection error caused by the dilution of the ammonia concentration due to the gas flow, and ensuring the accuracy of the detection data.

The utility model provides a kind of code reader and code reading equipment, code reader includes: host shell, code reading module and light source component;Code reading module is fixedly arranged in host shell, and the opposite ends of host shell are provided with connecting portion, and light source component is located the outside of host shell and is detachably connected with host shell by connecting portion.The utility model can expand the application scenario of code reader.

The application is suitable for the field of cable accessory composite interface test, and provides a test plug structure and a cable accessory composite interface electrical characteristic test device, wherein the test plug structure comprises a mounting seat, a sleeve seat assembly, the sleeve seat assembly is installed on the mounting seat and can move along the axial direction of the mounting seat, a plurality of support arms are arranged at intervals along the circumferential direction of the sleeve seat assembly, a support joint is arranged between the support arm and the sleeve seat assembly, one end of the support joint is rotationally connected with the support arm, and the other end is rotationally connected with the sleeve seat assembly; when the sleeve seat assembly moves, the support joint is driven to rotate, the support joint drives the clamping ends of the plurality of support arms to move close to or away from each other, and is used for clamping the insulation sample. The test plug structure of the application not only facilitates the quick assembly and disassembly of the insulation sample, but also significantly improves the test efficiency and reduces the damage and loss of the insulation sample caused by frequent operation.

The embodiments of the present application disclose a reference line determination method, device, equipment and medium, which belong to the technical field of autonomous driving and can be applied to closed parks such as ports and logistics, or urban transportation, or highways, etc. Since the path point information on the target route and the perception information of the target vehicle are generally measured, there is no calculation error in this information, so that the accuracy of the reference line information determined based on the measured path point information on the target route and the perception information of the target vehicle is higher, avoiding the influence of the accuracy of the map algorithm on the accuracy of the determined reference line information, and there is no need to perform complex indexing and path planning operations, which greatly reduces the amount of calculation required to determine the reference line information, reduces the hardware computing power requirements of the electronic equipment that determines the reference line, and reduces the cost of the electronic equipment.

This utility model belongs to the technical field of power system insulation material testing and research, specifically a composite stress aging device for composite insulators. A first motor is fixedly connected to the side wall of the workbench near the workbench; a first lead screw is rotatably connected to the output end of the first motor; two symmetrically arranged supports are slidably connected to the middle of the first lead screw; a limit frame is fixedly connected to the top of the supports; two symmetrically arranged limit bolts are slidably connected to the middle of the limit frame; and a spring clamp is fixedly connected to the middle of the limit frame near the limit bolts. Through the above structure, the combined use of the limit bolts and the spring clamp can accurately position the composite insulator in the test position, ensuring that the insulator is in the correct stress state during testing, improving the accuracy of the test, and avoiding slippage or displacement of the insulator during tensile testing, which would lead to uneven stress on the insulator during tensile testing and thus affect the accuracy of the test results.

A plurality of floating assemblies are arranged on a bearing plate at intervals, each floating assembly comprises a floating block, the floating blocks are arranged on the bearing plate in a sliding and penetrating mode, the two ends of each floating block protrude out of the bearing plate respectively, meanwhile, a plurality of detection assemblies are installed below the bearing plate, each detection assembly comprises a displacement sensor, and the displacement sensors are arranged on the bearing plate. The displacement sensor directly faces the floating block and is used for detecting the height of the floating block. Thus, after a product is placed on the bearing plate, the product is pressed on the floating blocks to enable the floating blocks to move downwards, the height of the floating blocks is detected through the high-precision displacement sensor, the detected height data of the floating blocks are compared with preset data through the controller, and whether the flatness of the product is qualified or not can be rapidly judged. According to the mode of feeding back the flatness of the product through point type detection, the detection precision and the detection efficiency can be greatly improved.

This utility model discloses a micrometer calibration device, relating to the technical field of calibration devices. It includes a protective shell, with a slide rail fixedly connected to the top of the inner wall of the protective shell. A threaded hole is provided on the left side of the protective shell, and a self-locking screw is threadedly connected to the left side of the protective shell. The self-locking screw has a circular hole inside, and a knob is fixedly connected to one end of the self-locking screw. This utility model uses a top column to push a fixing mechanism to move, causing the micrometer body to move closer to a standard block. When the micrometer body contacts the standard block, the force required to rotate the micrometer body increases. Spring 1 effectively prevents the top column from squeezing the standard block, preventing the knob 2 from rotating. Knob 2 drives the rotating screw of the micrometer body to rotate via a rotating shaft and connecting block, thereby enabling measurement of the standard block. When the micrometer body contacts the standard block, the increased rotational force causes spring 2 to undergo torsional deformation, thus preventing excessive force from squeezing the standard block.

The utility model relates to the technical field of cutters, and particularly discloses a gun drill. The cutter bar is coaxially connected with the cutter handle; the tool bit is coaxially connected with the tool bar, and the end face, deviating from the tool bar, of the tool bit is provided with a front tool face, a blade and a rear tool face which are sequentially connected; the chip grooves are formed in the side face of the tool bar and the side face of the tool bit, one ends of the chip grooves extend to the end face of the tool bar and penetrate through the front tool face, the blade and the rear tool face, and the other ends of the chip grooves and the tool handle are arranged at intervals; the first chip breaker groove is formed in the front cutter face, the cutting edge and the rear cutter face, and one end of the first chip breaker groove penetrates through the rear cutter face and communicates with the chip removal groove. According to the gun drill, the chip breaking function can be achieved, the chip winding phenomenon is reduced, and the deep hole machining efficiency is improved.

The application discloses a sensing device and a washing machine, and relates to the technical field of turbidity sensor design, wherein the sensing device comprises a base, a shell and a first protruding part; the base is provided with a turbidity sensor, a temperature sensor and a pressure sensor; the shell comprises a first shell and a second shell; the base, the turbidity sensor, the temperature sensor and the pressure sensor are arranged in the first shell; the second shell is arranged on the outer sidewall of the first shell; a plurality of first protruding parts are arranged; the plurality of first protruding parts are arranged on the outer sidewall of the second shell in sequence; a gap is arranged between two adjacent first protruding parts; and the gap is used for clamping connection with the washing machine; the application adjusts the depth of the sensing device in the washing machine drum by arranging a plurality of first protruding parts, so as to adapt to washing machines of different specifications, improve flexibility and reduce cost.

The application relates to the technical field of semiconductor manufacturing, and provides a semiconductor structure preparation method, a semiconductor structure and a memory. The semiconductor structure preparation method comprises the following steps: providing a substrate; forming a stack layer on the substrate, the stack layer being provided with a plurality of active lines arranged at intervals, forming a plurality of transfer columns in the stack layer; forming an interval structure outside the transfer columns and forming an etching hole; etching a second composite mask layer and an active line of an initial semiconductor layer along the etching hole to form a plurality of discrete active region masks; and etching the substrate along the active region masks to form a plurality of discrete active regions. The application can effectively reduce the preparation difficulty of the active region, improve the LCDU of the active region, and improve the performance of the semiconductor structure.

This invention provides a method and device for monitoring leakage in a converter valve, belonging to the field of leakage monitoring technology. It includes a valve tower, with a water collection tray fixedly connected to its bottom. The inner bottom wall of the water collection tray has an inclined surface sloping towards the center. A water inlet cylinder is fixedly connected to the inner bottom wall of the water collection tray. The outer top wall of the water inlet cylinder has several first locking grooves arranged in a circumferential array. The outer wall of the water inlet cylinder near the first locking grooves has several water inlet channels arranged in a circumferential array. First locking posts are symmetrically fixedly connected to the outer wall of the water inlet cylinder near the bottom. A monitoring component is also included, used to monitor leakage in the converter valve, and connected to the water inlet cylinder. This invention, by setting up a monitoring component, simplifies the alarm triggering method when coolant enters the device, and avoids the influence of colloidal substances on the alarm triggering accuracy.

This invention proposes an overload-prevention adapter, comprising an adapter body and an external heat dissipation assembly for cooling the adapter body. The heat dissipation assembly includes at least one active heat dissipation unit and at least one passive heat dissipation unit. The adapter body's outer shell is a closed structure. The passive heat dissipation unit is thermally connected to a heat source inside the adapter body, conducting heat from the adapter body to the outside. The active heat dissipation unit is located outside the adapter body and provides forced air cooling to the passive heat dissipation unit. This invention effectively prevents external dust from entering the adapter body through ventilation holes or fan gaps, ensuring that the accuracy of the adapter's overload protection is not affected by dust.

The utility model relates to the field of motors, in particular to a linear motor and a machine tool, which comprise a fixed assembly, a movable assembly, a primary assembly and a secondary assembly, a first magnetic matching piece and a second magnetic matching piece are arranged on the primary assembly, and a third magnetic matching piece and a fourth magnetic matching piece are arranged on the secondary assembly. The first magnetic matching piece and the third magnetic matching piece form a first magnetic matching set, the second magnetic matching piece and the fourth magnetic matching piece form a second magnetic matching set, and the vertical component force of the first magnetic matching set and the vertical component force of the second magnetic matching set are configured to be opposite in direction. The vertical magnetic force of the first magnetic fitting piece and the vertical magnetic force of the third magnetic fitting piece are offset, the vertical magnetic force of the second magnetic fitting piece and the vertical magnetic force of the fourth magnetic fitting piece are offset, and the situation that the vertical magnetic force between the magnetic fitting pieces directly acts on the workbench and influences the precision of the workbench is avoided.

The invention belongs to the technical field of welding, and particularly relates to a clamping type multi-angle welding robot and a welding method. Comprising a welding workbench, a multi-axis rotary welding robot is installed on the welding workbench, a welding gun on the multi-axis rotary welding robot is connected with a machined part in a matched mode, and the machined part is connected with a moving closing and clamping assembly in a matched mode; the moving clamping assembly comprises a linkage square plate arranged on the welding workbench, and the linkage square plate is connected with the bottom face of the welding workbench through a bolt. A bidirectional telescopic cylinder is mounted on the linkage square plate; through the multi-rotation angle adjusting unit, the machined part can be adjusted to a proper angle according to different welding requirements to be welded by the multi-axis rotary welding robot, the situation that the machined part needs to be disassembled and assembled again when the welding angle of the machined part is adjusted is avoided, the working intensity is reduced, and meanwhile the welding efficiency is improved; and the limitation of the device in use is reduced.

The application discloses a kind of electroplating tank liquid particle real-time monitoring system and method, it is related to monitoring technical field;To solve the problem of smaller function range;The real-time monitoring system, including tank body, implementation unit is fixed in the top of tank body by detachable equipment structure, the detachable equipment structure includes connecting rod, fixed block is fixedly connected to the both ends of connecting rod, the top outer wall of one fixed block is fixedly connected with processor for analyzing and processing monitoring information.The real-time monitoring method includes the following steps: implementation unit is equipped on tank body by detachable equipment structure, so that sleeve is in-depth tank liquid.The application is monitored to tank liquid in real time on line, and then obtains the distribution monitoring data of particle in tank liquid under different liquid level, improves the accuracy of detection operation, saves the energy of people long time in field monitoring, expands the function use range of monitoring system, meets the demand of field monitoring.

The utility model discloses an automatic measuring head of a rapid cylindricity instrument, which relates to the technical field of rapid cylindricity instruments and comprises a measuring head body, a mounting seat is fixedly mounted on the outer wall of the measuring head body, a protection mechanism is arranged on the outer wall of the mounting seat, and limiting mechanisms are arranged at two ends of the protection mechanism. The protection mechanism comprises a guide seat, a square frame is arranged at the lower end of the guide seat, guide holes are formed in the two sides of the square frame in a penetrating mode, blocking plates are slidably installed in the two guide holes, three long rods are arranged at the upper end of the guide seat, and concave plates are fixedly installed at the upper ends of the three long rods. According to the utility model, the measuring head body can be protected and sealed, dust particles are prevented from being attached to the measuring head body, a measuring system is ensured not to generate system errors, and the accuracy of a measuring result is not influenced.

This invention relates to a titanium alloy leading edge forming mold for composite fan blades of aero-engines. The mold is used for diffusion bonding forming of a first preform (4) and a second preform (5). It includes a lower mold (2) for assembling the second preform (5), a core mold (3) for placing between the first preform (4) and the second preform (5), and an upper mold (1) for pressing on top of the first preform (4). Each of the first preform (4), the second preform (5), and the core mold (3) has an ear piece (7) at its end. This ear piece (7) extends out of the mold when the upper mold (1) and the lower mold (2) are closed. The ear pieces (7) of the first preform (4), the second preform (5), and the core mold (3) are fixed by pins (6). Compared with the prior art, this invention has advantages such as convenient processing and high precision.

The application provides a high-precision linear slide table, belonging to the technical field of linear slide tables, which comprises a base, a slide table mechanism, a shell, a gap, and a limiting assembly. The slide table mechanism is arranged on the base. The shell is arranged on the base. The slide table mechanism is arranged between the base and the shell, so that the shell protects the slide table mechanism. The slide table mechanism has a sliding part extending to the outside of the shell through the gap. The sealing strip on the dustproof belt can be pressed into the inside of the groove through the pressing structure on the slide table mechanism. The cooperation between the sealing strip and the groove can effectively prevent dust from entering the inside of the equipment from between the dustproof belt and the shell. The limiting assembly can then fix the sealing strip, effectively preventing the sealing strip from separating from the inside of the groove and reducing the dustproof effect. The device avoids using magnetic parts, so that the sensor is not interfered with during use, thereby avoiding affecting the precision of the device.