53results about How to "High pressure accuracy" patented technology

The invention discloses a 64-channel polymer lithium-ion battery formation clamp machine, which comprises a rack, a pressure control device, a 64-channel laminated board, a temperature control cabinet and a battery formation cabinet, wherein the pressure control device is arranged on the rack; the 64-channel laminated board is arranged on the pressure control device and comprises a heating plate, clamp pressure plates, temperature sensors, connection chains, silica gel plates and battery tab contact pins for clamping tabs of polymer lithium-ion batteries; a plurality of clamp pressure plates are arranged in parallel; one polymer lithium-ion battery is clamped between every two clamp pressure plates; each heating plate is attached to the surface, for clamping the corresponding polymer lithium-ion battery, of the corresponding clamp pressure plate; each silica gel plate is attached to the surface opposite to the surface on which the corresponding heating plate is arranged; each temperature sensor is arranged in the corresponding clamp pressure plate; and the end parts of the clamp pressure plates are mutually connected through the connection chains. Pressurization, heating and formation are integrated into one clamp, so that the transfer process among the procedures is reduced.

The invention discloses a spray pipe plug cover structure for a solid-liquid rocket engine ground test. According to the spray pipe plug cover structure, the function of reliably breaking a diaphragm when the pressure intensity of a combustion chamber reaches a set value can be achieved, and the function of the diaphragm in the real working process of a spray pipe can be completely simulated in the test. The spray pipe plug cover structure comprises the diaphragm, a spray pipe plug cover and a long screw, wherein the plug cover diaphragm and a sealing ring are arranged at the end face of the outlet of the spray pipe in a combined mode and are positioned by a spray pipe plug cover tool. The diaphragm, the sealing ring and the spray pipe plug cover are positioned by a spray pipe shell and are fixedly connected and fastened to the head of the spray pipe through a long bolt so as to fix the position of the diaphragm. According to the spray pipe plug cover structure, the diaphragm, the spray pipe plug cover, a spray pipe heat insulation layer and the spray pipe shell are sealed through the sealing ring, so that the air impermeability of the combustion chamber is guaranteed; the diaphragm is convenient to process and install, and the uniformity of the breakage pressure intensity of the diaphragm is good through repeated test verification; and just the diaphragm needs to be replaced during repeated tests, and the spray pipe can be repeatedly used, so that the economical efficiency is good.

The invention belongs to an axial pressing device used after winding of a large-size transformer coil. The device solves the problem of a large stroke of equipment by replacing a screw rod with oil cylinders, and the oil cylinders have better rigidity and strength. The parallelism of the equipment is subjected to position control by taking a rolling grating as a displacement sensor, and the position precision is fed back to an electro-hydraulic servo valve by a control system, so the high-precision synchronous control on four sets of oil cylinders is realized. The axial pressing device used after winding of the large-size transformer coil has the characteristics of being novel and unique in integral structure, concise and attractive in appearance, small in occupation area and the like. The pressed coil has precise height and accurate pressure value, the coil pressing process is safe and reliable, and the insulation of the coil can be completely kept. The axial pressing device used after the winding of the large-sized transformer coil is particularly suitable for pressing high-voltage and ultrahigh-voltage coils.

A pressure sensor, which is to be used in an environment involving vibrations, includes a case and a sensor chip. The case has an inner surface that is to be disposed perpendicular to a direction of the vibrations. The sensor chip is to sense a pressure in the environment and generate a sensing signal representative of the sensed pressure. The sensor chip has a pressure-receiving surface and is secured in the case with the pressure-receiving surface perpendicular to the inner surface of the case. With such an arrangement, since the pressure-receiving surface of the sensor chip is accordingly to be parallel to the direction of the vibrations, the influence of the vibrations on the pressure-receiving surface can be minimized. Consequently, high accuracy of the pressure sensor can be ensured.

A pressure sensor includes: a housing; an attachment portion coupled to the housing and having a pressure input orifice; a diaphragm sealing the pressure input orifice of the attachment portion and having a first surface that is a pressure receiving surface; and a pressure sensitive unit having a detecting axis in a direction in which a force is detected. In the sensor, an end of the pressure sensitive unit is connected to a central area of a second surface of the diaphragm, another end of the pressure sensitive unit is connected to the housing, and the detecting axis is approximately orthogonal to the pressure receiving surface.

Disclosed are an air-oxygen mixing airway for a respirator, the respirator and a method. The air-oxygen mixing airway comprises an anti-turbulence member and an air-oxygen mixing cavity, the anti-turbulence member comprises an oxygen way and an air way, two ends of the air way are open, the left end of the oxygen way is closed while the right end of the same is provided with an oxygen barrier piece, and an oxygen inlet is arranged on the outer side of the oxygen barrier piece. The respirator comprises an oxygen way, an air way and an air-oxygen mixing chamber provided with the air-oxygen mixing airway, an oxygen miniature proportional valve, an oxygen flow sensor and an air intercepting member are arranged on the oxygen way, a fan, an air pressure adjusting valve, an air flow sensor and an air intercepting member are arranged on the air way, and opening degree of the oxygen valve is adjusted to adjust oxygen flowing speed according to oxygen concentration of mixed gas needing to be output and air flowing speed measured by the air flow sensor. The anti-turbulence member is adopted in the air-oxygen mixing airway, and can cooperate with the flow sensors which are high in accuracy and low in power consumption, and the oxygen barrier piece is utilized, so that accuracy of air-oxygen mixed gas can be improved.

The invention discloses a novel segmented stator core turnplate welding machine which comprises a case, a protecting cover, a worktable, a plurality of fixing tools, a loading device, a shaping device, a soldering device, a testing device, an unloading device, a comprehensive detector, iron cores and a manipulator. The fixing tools are mounted on a turnplate, the iron cores are fixed to the fixingtools, the loading device, the shaping device, the soldering device, the testing device and the unloading device are fixed to the worktable, and the loading device, the shaping device, the solderingdevice, the testing device, the unloading device and the fixing tools are joined and matched one another. Automatic loading is achieved by means of the integral arrangement. Insulation paper of the iron cores is shaped, pins of the iron cores are soldered, the resistance values, insulating property and resistance to pressure of the iron cores are detected automatically, and the iron cores are unloaded automatically. The whole process is finished within only 8 seconds, so that the work efficiency is improved greatly and the novel segmented stator core turnplate welding machine is stable and reliable.

A method for manufacturing a resistive element includes: preparing a substrate including an n-type silicon layer; doping the silicon layer with an impurity to thereby form a resistive region; heat-treating the resistive region by any of rapid thermal annealing, flash lamp annealing, and excimer laser annealing; and epitaxially growing silicon on the resistive region to thereby form a covering layer.

The invention relates to a gel strength measuring method and device. The method is characterized by including the steps: 1) preparing the measuring device and gel solution with the weight percentage content of 1.5%; 2) placing the gel solution on a gravity sensing platform of the measuring device; 3) making zero for weight data of the measuring device by a data reset key of a keyboard of the measuring device; 4) adjusting a tightening adjustment screw of the measuring device, enabling a detecting head to pressure on the surface of gel to be detected, and driving the detecting head to apply pressure to the surface of the gel by a spiral expansion joint; 5) acquiring information of the surface of the gel bearing the pressure by the aid of a gravity sensor of the bottom surface of the gravity sensing platform, converting the information by an A/D (analog to digital) conversion module of the measuring device, transmitting the converted information to a control processing unit, and processing the information; 6) locking maximum pressure born by the surface of the gel before being broken and duration time bearing the maximum pressure by the control processing unit when the gel is broken by gravity. The measuring method has the advantages that the measuring device is simple in structure, high in accuracy and efficiency, short in measuring time and the like.

An electric pneumatic coupled pressure foot of an automatic drilling tail end executor is installed on a spindle base plate, wherein a drilling spindle is installed on the spindle base plate, the spindle base plate is installed on an internal cross sliding table of the tail end executor, and the drilling spindle performs feed with movements of the spindle base plate on the cross sliding table. The electric pneumatic coupled pressure foot is characterized in that the pressure foot comprises a pressure foot body and a pressure foot servo system, the pressure foot body is connected with a pressure foot base, and the pressure foot servo system comprises a servo motor, driving air cylinders, a control servo motor and an upper computer for the driving air cylinders. The upper computer is installed on a tail end executor controller, the servo motor drives a ball screw, a first least screw connecting plate is fixed to a lead screw, the driving air cylinders are symmetrically arranged on two sides of the lead screw and are installed at the bottom of the first least screw connecting plate, the output ends of the driving air cylinder are connected with the pressure foot body, and the first least screw connecting plate is installed on guide rails through slide blocks.

The invention id suitable for the technical field of automatic equipment, and provides a bagging machine. The bagging machine comprises a base as well as a drive device, a feeding device, a bag bin and a pressure measuring device which are sequentially arranged on the base, wherein the drive device drives the feeding device to rotate; a feeding bin is arranged on the feeding device; the discharge hole of the feeding device is provided with the barrel-shaped bag bin; the tail end of the bag bin is provided with the pressure measuring device; the pressure measuring device comprises a hydraulic cylinder; the end part of the piston rod of the hydraulic cylinder is provided with a platform; and the platform can enter the bag bin in a telescopic mode. The bagging machine is simple in structure, is easy to operate, and is low in manufacturing cost; automatic bagging is realized through a packing auger conveying device, and pressure in a bag is measured in real time by the pressure measuring time, so that automatic filling with constant pressure is realized, and therefore, the bagging speed is high, the labor power is saved, the problem that the degree of tightness of the bagging is uneven is effectively solved, and the pressure precision is high.

The invention provides a forging and pressing line intelligent control system which comprises an intelligent mold recognition unit used for recognizing parameter information of molds of a forging and pressing line, storing the parameter information and making preparations for subsequent calling of the parameter information. and a workshop intelligent management unit, which can receive the parameter information, form forging and pressing line process data including the parameter information, analyze the forging and pressing line process data, formulate process parameters of the forging and pressing line, and transmit the process parameters to the forging and pressing line to control the production operation of the forging and pressing line.

The invention discloses a method, system and device for measuring surface pressure of a wing, and the method comprises the following steps of the first step, dividing the wing into a plurality of wingblocks by a block division strategy, so that there is no gradient in the surface pressure between each point in each wing block; the second step, obtaining the position of a strain measurement pointon the wing based on the finite element model and the block strategy; the third step, installing a strain measurement component at the position of the strain measurement point on the wing to perform the strain measurement; and the fourth step, obtaining the pressure of each wing block on the wing according to the measured strain data, that is, obtaining a pressure distribution value on the wing. By dividing the wing into a plurality of wing blocks by the block division strategy, obtaining the position of the strain measurement point on the wing by using the finite element model and its calculation results, and reversely calculating the actual pressure value of the wing during the work process by combining the measurement of the actual strain of the strain measurement point on the wing, theprecision of the surface pressure obtained of the wing is high, the implementation method is convenient, the economy is high, and the efficiency is high.

The invention relates to the technical field of forging, in particular to a lateral support pressing mechanism for a numerical control bending machine. The mechanism comprises a fixed bracket fixed on one side of a lower mold of the numerical control bending machine, and a longitudinal lead screw positioned between the fixed bracket and the lower mold of the numerical control bending machine; the longitudinal lead screw is coated with a main cylinder; an upper fixed mounting base is arranged at the upper end of the main cylinder; and a lower fixed mounting base is arranged at the lower end of the main cylinder. The lateral support pressing mechanism for the numerical control bending machine respectively performs fixed connection for an upper pressing rod and a lower support rod through threaded connection of the upper and lower ends of the main cylinder with the upper fixed connecting base and the lower fixed connecting base with internal thread connecting holes on the surfaces, respectively adjusts gaps between the upper and lower fixed connecting bases through linkage of a control rod on a control base with a transmission rod, can freely adjust the height according to the workpiece thickness, further improves the support pressing precision, and promotes the production efficiency.

The invention discloses a hydraulic drive device and system. The device comprises a hydraulic pump, a hydraulic bypass and a control unit. The hydraulic pump pumps hydraulic fluids from a reservoir to a hydraulic outputting line, the hydraulic bypass is connected with the reservoir through the hydraulic outputting line, an adjustable flow unit is arranged in the hydraulic bypass, and the control unit controls the flow unit to adjust the flow of the hydraulic fluids in the hydraulic bypass according to operation conditions. According to the hydraulic drive system, the hydraulic outputting line is connected with one or more hydraulic actuators. By means of the hydraulic drive device and system, the flow of the hydraulic fluids in the hydraulic bypass can be adjusted, the pressure accuracy is improved, and energy is saved.

The invention discloses a contact type semiconductor material test head which comprises a shell and a probe combination arranged in the shell; wherein the probe combination comprises flat tension spring sand probes; and the two sides of each flat tension spring are symmetric. Each flat tension spring comprises a spring end at the lower part and an extending end at the upper part, the probe is fixed at the center of the spring end, and the extending end is in a hollow flat plate shape. A plurality of flat tension springs are overlapped together and arranged in the shell through the extending ends, the spring ends of the flat tension springs are arranged at the lower part of the shell, and an insulating film isolation layer is arranged between every two adjacent flat tension springs. The spring end of each flat tension spring comprises spring parts arranged on the two sides and a middle part arranged between the two spring parts, a vertical clamping groove is formed in the center of themiddle part, and the probe is arranged in a vertical clamping groove arranged in the center of the middle part. According to the invention, the lateral force is completely eliminated, the structure issimple, the number of parts is small, and the distance between the probes can be greatly reduced. The negative influence on the overall test precision caused by the edge effect in the test is reduced, the test precision is high, the cost is low, and the service life is long.