50results about How to "Guaranteed precision control" patented technology

The invention relates to a spacecraft anti-interference attitude control method in a condition of a damaged actuating mechanism. The method provides a spacecraft anti-interference attitude control system for conditions that a spacecraft actuating mechanism is physically attacked by an opponent in a space confrontation and a spacecraft platform has an external environment interference and a systemnon-modeling dynamic influence. The method includes: firstly, establishing a spacecraft attitude control system model in conditions of the damaged actuating mechanism, the external environment interference and the system non-modeling dynamic influence; then designing an interference observer, and estimating an equivalence interference caused by the external environment interference and the systemnon-modeling dynamics; designing a learning observer for an actuating mechanism failure fault, caused by an attack, of the actuating mechanism, and reconstructing the actuating mechanism fault; and finally designing a composite controller according to an equivalence interference estimate and actuating mechanism fault reconstruction information, and constructing the spacecraft anti-interference attitude control method in the condition of the damaged actuating mechanism. The method is applicable to high-precision and high-reliability control of the spacecraft attitude control system.

The invention relates to a lathe tailstock hole grinding fixture. The fixture comprises a core shaft (1); a tapered guide sleeve (2) is arranged in the middle of the core shaft (1); a taper sleeve (3) is arranged on the guide sleeve (2); the taper sleeve (3) consists of three taper sleeve blocks; a grinding spiral groove (4) is formed on the surface of each of the three taper sleeve blocks, a spring mounting groove (6) is formed on each of the front and rear sides of each grinding spiral groove (4), a spring (5) is arranged in each spring mounting groove (6), and the three taper sleeve blocks are fixed through the springs (5); a washer (9) and an adjusting nut (10) are arranged at each of the front end and the rear end of the taper sleeve (3); and grinding sand (7) is arranged on the surface of the taper sleeve (3). The lathe tailstock hole grinding fixture is simple in structure and convenient to operate, can be used for lathes of the same model, is low in manufacturing cost and high in grinding efficiency, and can effectively ensure the precision control of surface roughness, roundness, cylindricity and the like of a lathe tailstock hole.

The invention brings forward a three-dimensional printing method with the arrangement of a reference point. A print head operates in a static state, and a workbench carries out three-dimensional motion and can rotate. Specific work steps are as follows: selecting a point which always remains motionless relative to the workbench as a reference point; adding the reference point into a three-dimensional network model; computing three-dimensional distance from each feature point in the three-dimensional network model to the reference point; slicing the three-dimensional network model for layering and acquiring molding information at each layer; moving the workbench to adjust relative position between the workbench and the print head, and carrying out layered printing; and acquiring a printing model. The invention brings forward the three-dimensional printing method with the arrangement of a reference point. By the method, printing deviation can effectively be reduced and printing precision and efficiency can be raised.

The invention discloses a method for quickly and accurately positioning a bolt. The method comprises the following steps of manufacturing a prism support; fixing the prism support on the bolt to be measured through an upper nut and a lower nut; fixing a prism on a prism substrate; fixing the prism substrate on the support through a prism substrate fixing bolt; adjusting the prism substrate to enable the center of the prism to be aligned to the center of the bolt; and using a total station to measure the position of the bolt. According to the method, the bolt can be positioned and measured quickly and efficiently, accuracy control for bolt measuring can be guaranteed, and besides, the measuring control efficiency is greatly improved.

The invention provides a three-dimensional printing machine with a multi-dimensional motion workbench. The three-dimensional printing machine comprises a base, first rails, a first supporting frame, second rails, a second supporting frame, a telescopic rod, a workbench, a spraying head bracket, one or multiple printing spraying heads, one or multiple material boxes and the like, wherein the first rails are mounted on the base; the first supporting frame is mounted on the first rails and can move along the length direction of the first rails; the second rails are mounted on the first supporting frame and are perpendicular to the first rails; the second supporting frame is mounted on the second rails and can move along the length direction of the second rails; the workbench is mounted on the second supporting frame through the telescopic rod and can move in the height direction; the spraying head bracket is mounted on the base; the printing spraying heads are mounted on the spraying head bracket and are positioned above the workbench; the material boxes are mounted on the base; the printing spraying heads are connected with the material boxes in a one-to-one correspondence manner. The printing spraying heads of the three-dimensional printing machine are fixedly mounted, so that the continuity of printing material outputting is kept, and the printing effect can be enhanced.

The invention relates to the field of bearing machining, in particular to automatic machining equipment for a bearing outer ring. The equipment comprises a vibration disc, a conveying belt and a machining mechanism, wherein the end, far away from the vibrating disc, of the conveying belt is provided with a pushing mechanism, the machining mechanism comprises a rotating mechanism, a ring grinding mechanism, a groove grinding mechanism and a pushing mechanism, the rotating mechanism comprises a cam cutting machine, a first supporting frame, a rotating disc, a rotating rod and a rotating table, the rotating disc is arranged at the top of the cam cutting machine, the rotating rod is fixedly arranged at the top of the rotating disc, the pushing mechanism is located between the rotating disc andthe rotating table, and the pushing mechanism, the ring grinding mechanism and the groove grinding mechanism are sequentially distributed along the circumferential direction of the rotating table. According to the automatic machining equipment for the bearing outer ring, outer ring grinding and outer groove grinding are simultaneously conducted by adopting the mechanism, the waste of a large quantity of area of sites is reduced, the automatic feeding mode of the vibrating disc and the mode of automatic alignment of conical ejector pins are adopted, so that the precision of feeding is controlled, and the machining precision of the bearings is more accurate.

The present invention provides a simple detection device of circularity and linearity of bar stock. Four parallel guide rails are installed on a platform, consisting of a linear motor work guide rail, a guide rail 1, a speed regulation motor work guide rail and a guide rail 2. The linear motor work guide rail is provided with a linear motor and a gauge stand 2; the speed regulation motor work guide rail is provided with a speed regulation motor 1 and a speed regulation motor 2, a double-row cylindrical roller bearing 1 is connected with the speed regulation motor 1 and the speed regulation motor 2, and a double-row cylindrical roller bearing 2 is arranged at a corresponding bearing pedestal; the gauge stand 1 is arranged on the guide rail 2; when rod materials to be detected are putted on the double-row cylindrical roller bearing 1 and the double-row cylindrical roller bearing 2, a dial indicator is arranged on the gauge stand 1, the dial indicator and the position of the rod materials to be detected are observed, the rod materials to be detected begin to rotate, and the maximum difference of pointer bouncing is recorded; and the dial indicator is arranged on the gauge stand 2, the rod materials to be detected are contacted with the guide rail 1, and the reading difference during the movement of the pointer is recorded. The simple detection device of circularity and linearity of bar stock is rapid, accurate in detection, low in cost, simple in operation, high in rechecking efficiency and saved in both time and labor.

The invention discloses a high-performance hard alloy material, and belongs to the field of hard alloy materials. The high-performance hard alloy material is prepared by the following raw materials inparts by weight: 65-80 parts of WC, 5-10 parts of Co, 10-15 parts of TiC, 3-8 parts of Ni, and 0.2-0.7 part of grain growth inhibiting agent; preferentially, the high-performance hard alloy materialis prepared by the following raw materials in parts by weight: 70-75 parts of WC, 7-9 parts of Co, 12-14 parts of TiC, 4-6 parts of Ni, and 0.3-0.5 part of grain growth inhibiting agent; the grain growth inhibiting agent is TaC; and the weights of all the components have the following relations: Ni / (Co+Ni) is not more than 0.4 and not less than 0.3; and (0.06WC+0.2TiC) / (WC+Co+TiC+Ni) is not more than 0.08 and not less than 0.05. Through improvement of the formula, the high-performance hard alloy material reduces adding of such expensive materials as Co and TaC, so that the production cost is reduced; and through reasonable batching, the hardness, the toughness and the cutting performance of the finally prepared high-performance hard alloy material are greatly improved compared with a traditional hard alloy material.

The invention belongs to the field of assembly of small-caliber bullets, and in particular relates to a screw-in type electric primer explosion-proof screwing machine used in the assembly of small-caliber bullets. A screw-in type electric primer explosion-proof tightening machine of the present invention includes a cartridge cup, a jacking mechanism, a positioning and clamping mechanism, a pit device for automatically pressurizing and searching for a screw-in type electric primer, an air circuit system, a control part and controlling software. The jacking mechanism of the screw-in electric primer explosion-proof screwing machine is installed on the machine base, the cartridge cup is located above the jacking mechanism, and the positioning and clamping mechanism, automatic pressurization and the pit device for finding the screw-in electric primer are located in the cartridge in turn. The top of the cylinder cups are installed on the rack. The air source, valve, air pipe and the pneumatic actuators of the above mechanical parts form an air circuit system. The control software is set in the controller of the control part, and the controller and the control software control the operation of the above-mentioned mechanical structure. The screw-in electric primer explosion-proof tightening machine of the present invention can automatically complete the screwing of the screw-in electric primer, it solves the problem of automatically finding the pit on the screw-in electric primer, and can ensure the precision control of the screw-in electric primer tightening depth , to ensure product quality, realize the separation of man and machine, and ensure the safety of production personnel.

The invention discloses a high-precision electric punching machine, which includes a driving motor, a punching device, a processor and a circuit box. frame, the support frame is fixed with a rail connected to the casing, a driving motor is arranged above the puncher, a workbench is connected below the puncher, and an operation panel is installed on the right side of the casing and a power cord, and an operation panel is fixed above the power cord, a transmission chain is installed on the left side of the processor, a running wheel is fixed on the upper and lower ends of the transmission chain, and a host motor is installed on the right side of the running wheel . This high-precision electric punching machine has installable and detachable bolts on the puncher, which is more convenient to replace. The movement stroke is 0-20, the working range is wide, and there are many types of processing materials. There are scales and fixers on the workbench. device, accurate precision control, high work efficiency, and avoid processing defects.

The invention provides a remote quality control system suitable for a water quality multi-parameter monitor and a using method. The remote quality control system comprises the water quality multi-parameter monitor, a quality control cup, a multi-way valve, a peristaltic pump, an injection pump, a control module, an industrial personal computer, an air filter, a pure water bottle and a plurality ofmother liquor bottles. The pure water bottle, the mother liquor bottles and the air filter are respectively connected to the multi-way valve, the multi-way valve is connected to the quality control cup through a switchable peristaltic pump passage and an injection pump passage, a monitoring pipeline of the water quality multi-parameter monitor is connected to the quality control cup, and a liquidlevel monitoring and overflowing device is arranged in the quality control cup. A second interface at the tail end of the multi-way valve is connected with the pure water bottle; The industrial personal computer communicates with the control module, a quality control system with more complex components is formed, configuration of quality control liquid with various parameters can be provided, solution dosage reminding can also be provided, one system is used, different quality control requirements are met, and the remote quality control system is designed to be modular and easy to expand.

The invention discloses an integral filter element testing system. The integral filter element testing system is composed of a water supply system and a testing system, wherein the water supply system supplies water to the testing system through a main water supply pipe, the testing system comprises a loading module, a control module, a flushing module, a pressure regulating module, a sampling module, a sensing module, a detecting module and a reporting module, the control module is used for regulation process control, and the reporting module conducts data transmission, reception and computing analysis on various parameters, data, control states and the like and displays the parameters, data, control states and the like. A stable, repeatable and efficient testing environment can be provided for performance testing of a filter element, multiple filter elements can be tested simultaneously or independently, testing efficiency is improved greatly, testing environment and testing regulation can be precisely controlled, testing precision can be controlled more accurately, testing water can be recycled by 70% or more through matching of the water supply system and the testing system, more energy is saved, and environment friendliness is better realized.

The invention discloses a steady-state no-load test method for mechanical characteristics of a motor. The method comprises the steps: S1, applying a rated voltage U01 to a motor, and measuring the no-load current I01 and the no-load rotating speed n01 of the motor when the motor operates to a steady state; S2, applying a voltage U02 to the motor, and when the motor operates to a steady state, measuring the no-load rotating speed n02 of the motor, wherein the voltage U02 is smaller than the rated voltage U01; S3, obtaining an expression that the current I, the rotating speed n, the output power P2 and the efficiency eta of the motor change along with the load torque T; and S4, obtaining the locked-rotor torque TD of the motor, selecting a plurality of values with the load torque T being 0-TD, and substituting into the expression of S3 to obtain a mechanical characteristic curve of the motor. The method has the advantages that the method can adapt to testing of more types of motors, the testing mode is simple, the testing cost is low, and compared with an acceleration torque transient mechanical characteristic testing method, the accuracy is better controlled, and the obtained characteristic curve is more accurate.

The invention provides a manufacturing method of an ink-jet printing digital micro-fluidic chip, which comprises the following steps of: 1, designing an electrode circuit pattern to be printed, and preparing a thin film serving as a dielectric layer; 2, according to the electrode circuit pattern, using an ink-jet printer for carrying out ink-jet printing of nanoscale conductive ink on one face of the dielectric layer so as to carry out single-layer circuit printing or complex circuit printing; and 3, coating the other surface of the dielectric layer with a hydrophobic layer. According to the manufacturing method of the ink-jet printing digital micro-fluidic chip, high-precision resolution ink layer control is carried out by utilizing ink jet of an ink-jet printer, the problems that steps are generated in an electrode gap and liquid is blocked are solved, the problem of separation of an electrode and a lead is solved, and the influence of short circuit in a complex circuit design is effectively avoided. The ink-jet printing process is relatively simple, low in cost and high in precision, is suitable for repeated test requirements of the digital micro-fluidic chip in the research field, can greatly improve the working precision and efficiency of the digital micro-fluidic chip, and has practicability.

The invention belongs to the technical field of silicon rod machining and particularly relates to a semiconductor crystal rod Notch forming center calibration device comprising a clamping device, a center measurement device and a V groove grinding device, and the center measurement device and the V groove grinding device are arranged on the two sides of the clamping device correspondingly. The invention further relates to a calibration method. Firstly, center calibration is conducted through the center measurement device and a high-precision center calibration rod, and then center calibrationis conducted through the V groove grinding device and the high-precision center calibration rod. Through the semiconductor crystal rod Notch forming center calibration device and method, the problem that when a Notch groove is formed in a semiconductor crystal rod, semiconductor grinding equipment cannot be calibrated by a tool is solved, and the method for calibration through the calibration device is convenient and reliable and is an effective method for fast calibrating the Notch groove.

The invention discloses a pile column connection precise positioning pouring system and a construction method. The pile column connection precise positioning pouring system comprises a steel stand column, a drilled pile, a control frame connected to a supporting platform, a first jack connected between the control frame and the horizontal direction of the steel stand column, a second jack connected between a protective cylinder and the horizontal direction of the steel stand column, and a feeding pipe inserted into the steel stand column. During construction, by arranging the control frame, the steel stand column can be effectively borne; by arranging the supporting platform, the supporting platform can be fixedly connected through a bearing arm pre-connected to the steel stand column; by arranging the first jack and the second jack, installation is facilitated, and adjustment, clamping and fixing are facilitated; and the first jack and the second jack are jointly controlled through a verticality adjusting controller, so that cooperation and synchronous control are facilitated. Through pouring construction of different grades of concrete, the overall construction of the steel stand column and the drilled pile is guaranteed, and effective construction during concrete grade conversion and precision control in the process are guaranteed.

The invention discloses a cutting head follow-up control system. The system comprises a host, a sensor module and a driving assembly, wherein the host is electrically connected with the sensor moduleand the driving assembly separately, the sensor module is used for measuring physical characteristics of a laser cutting head nozzle, converting the physical characteristics into signals and transmitting the signals to the host, the host sends a corresponding control instruction to the driving assembly after receiving the signals, the sensor module comprises a capacitance measuring unit and a temperature measuring unit, the capacitance measuring unit is used for detecting capacitance signal between the laser cutting head nozzle and a to-be-cut workpiece, and the temperature measuring unit is used for detecting the temperature of the capacitance measuring unit. According to the follow-up control system, the follow-up control precision is improved, the follow-up control system can automatically give an alarm and stop in case of abnormal operation, the overall precision of laser cutting operation is guaranteed, an operator can conveniently store, analyze and estimate all data appearing infollow-up control, the use condition of the follow-up control system can be better monitored, and maintenance management in the later period is facilitated.

The invention relates to the field of a printing machine, in particular to a precision printing machine. The precision printing machine comprises a machine shell, an annular card absorbing belt, a paper inlet channel dust-removing roller and a printing head; the dust-removing roller is arranged in front of the annular card absorbing belt and comprises a dust-removing active rotary roller and a dust-removing passive rotary roller; a card dust-removing sensor is arranged in front of the dust-removing roller; the printing head is hinged in front of the card dust-removing sensor; a printing rollerdriven by a printing motor to rotate is arranged below the printing head; transmission gears which are mutually engaged are arranged between a motor shaft of the printing motor and a roller shaft ofthe dust-removing active rotary roller; the control end of the card dust-removing sensor is connected with a card absorbing motor through a cable; a front positioning roller, a back positioning rollerand a positioning sensor are arranged in front of and at back of the printing roller; and the control end of the positioning end is connected with the printing motor through a cable. The precision printing machine provided by the invention is simple in structure, high in printing precision and good in printing effect and can prevent the printing roller or card paper from being worn.

The invention relates to the technical field of casting equipment, in particular to a manipulator for an automatic casting production line. The manipulator is characterized in that a second conveyor is arranged on one side of the outer end of a first conveyor, a third conveyor is arranged on the other side of the outer end of the first conveyor, a group of connecting frames are fixedly mounted between the first conveyor and the second conveyor, a clamping manipulator is arranged on one side of the bottom end of each connecting frame, a first manipulator mechanism is fixedly mounted on one side of the top end of the first conveyor, and a paint spraying mechanism is fixedly mounted on the side, close to the first manipulator mechanism, of the outer wall of the first conveyor. According to the manipulator for the automatic casting production line, the whole device can achieve simple, convenient and efficient workpiece forging, the working efficiency of a user is effectively improved, and a better use prospect is brought.

The invention relates to a garment edge folding hot press forming device and method, and the garment edge folding hot press forming device comprises a hot press forming mechanism and an edge folding positioning mechanism; the edge folding positioning mechanism comprises a positioning long strip, one long edge side of the positioning long strip is connected with a pressing plate, the lower surface of the pressing plate is flush with the lower surface of the positioning long strip, a support is arranged on the machine table, the pressing plate is hinged to the support, and the machine table is further provided with a supporting table used for supporting the pressing plate. The positioning long strip comprises an upper long plate and a lower long plate, and the two sides of the upper long plate and the lower long plate in the width direction are connected; a partition cavity is formed between the upper long plate and the lower long plate, a conveying belt connected end to end is wound around the upper long plate in the length direction, the outer surface of the conveying belt is covered with a fixing belt, the two side edges of the fixing belt in the width direction are fixed to the conveying belt, and long holes extending in the width direction of the fixing belt are evenly formed in the middle of the fixing belt in the length direction. The garment edge folding hot press forming difficulty can be reduced, and the forming precision can be improved.

The invention belongs to the technical field of underwater pile foundation construction. The ultra-long large-diameter pile foundation underwater operation platform unit comprises a supporting barrel and a cantilever positioning guide frame, a guide assembly is arranged on the cantilever positioning guide frame and used for conducting radial limiting supporting on the supporting barrel, a supporting assembly is arranged on the supporting barrel, and the supporting assembly is used for supporting the supporting barrel. The supporting assembly is used for supporting the cantilever positioning guide frame. The invention further discloses a super-long large-diameter pile foundation underwater operation platform and a construction method. The overall arrangement is reasonable, the problems existing in construction of an existing ultra-long large-diameter pile foundation operation platform can be effectively solved, the structural stability and the construction efficiency are improved, modular arrangement can be achieved, and construction and control over the structural stability are more convenient.

The invention relates to the field of electric heating paste, in particular to medium and low temperature curing electric heating paste and a preparation method thereof, and the medium and low temperature curing electric heating paste comprises the following raw materials by weight: 3-15% of graphite powder, 0.5-6% of carbon powder, 0.1-3% of white carbon black, 3-10% of nickel powder, 1-15% of molybdenum powder, 0.5-10% of boron nitride, 1-4% of silicon carbide, 0.1-25% of silver powder, 35-70% of a binder, 0.1-3% of an auxiliary agent, and 0.1-15% of a solvent. A medium-low temperature curing mode is adopted, the curing process is simple, medium-low temperature energy consumption is small, it can be guaranteed that the substrate is not prone to deformation, precision control is more accurate, the resistance value deviation can be small, and the medium-low temperature curing mode can further improve the effect of being used in cooperation with other carrier materials with low melting points.

The invention discloses a self-adaption positioning control system of a bridge detection vehicle. The bridge detection vehicle comprises walking boots and a walking trolley, wherein the walking boots are devices which are used for detecting close contact and fixation between the detection trolley and a bridge; the walking boots comprise a trolley rail, telescopic guide wheels and telescopic fastening hooks; the walking trolley is a driving device of the detection vehicle, and is used for driving the walking boots and the detection vehicle to walk on the upper chord of the bridge; the walking trolley comprises a telescopic main support and walking wheels. The system comprises a walking-boot section changing control module and a walking trolley control module, wherein the walking-boot section changing control module is used for controlling the walking boots to change sections; the walking trolley control module is used for controlling the walking trolley to walk within a target section after the walking boots stop walking and are positioned by the horizontal fastening hooks. Through the adoption of the control system disclosed by the invention, the control with needed accuracy can be guaranteed. The control system has very important and general reference value and very important and general popularizing value for similar engineering machinery and bridge machinery.

The invention discloses a self-adaption positioning control system of a bridge detection vehicle. The bridge detection vehicle comprises walking boots and a walking trolley, wherein the walking boots are devices which are used for detecting close contact and fixation between the detection trolley and a bridge; the walking boots comprise a trolley rail, telescopic guide wheels and telescopic fastening hooks; the walking trolley is a driving device of the detection vehicle, and is used for driving the walking boots and the detection vehicle to walk on the upper chord of the bridge; the walking trolley comprises a telescopic main support and walking wheels. The system comprises a walking-boot section changing control module and a walking trolley control module, wherein the walking-boot section changing control module is used for controlling the walking boots to change sections; the walking trolley control module is used for controlling the walking trolley to walk within a target section after the walking boots stop walking and are positioned by the horizontal fastening hooks. Through the adoption of the control system disclosed by the invention, the control with needed accuracy can be guaranteed. The control system has very important and general reference value and very important and general popularizing value for similar engineering machinery and bridge machinery.

The invention relates to an overturning shaping die for an automobile framework part. The overturning shaping die comprises an upper die and a lower die; a profiling positioning block, a rotating shaft and two bearing seats are arranged on the lower die, and a magnet is arranged on the profiling positioning block; a profiling side pressing block and a reset assembly are arranged on the side, located on the profiling positioning block, of the lower die in a sliding mode, a driving gear is coaxially fixed to the rotating shaft, and a driving rack is arranged on the profiling side pressing block;a flexible pressing head is connected to the upper die in an elastic manner; a side cutter is also arranged on the upper die; a side shaping block is movably arranged in the profiling side pressing block in a penetrating mode; a reset piece is arranged on the profiling side pressing block; and a shaping female die is arranged on the profiling positioning block. According to the overturning shaping die for the automobile framework part, the overall structure is reasonable and compact, feeding and discharging are conducted in the forward direction, shaping precision control can be guaranteed, in addition, turning and shaping power is provided through the single-side cutter, the die structure can be simplified, and the stability of the product in the deflection process can be guaranteed through the design of the flexible pressing head and the magnet.

A high-strength steel assembled ship moon pool assembly technology is characterized by comprising the following steps that a concave moon pool is machined and completed on a concave bed-jig, a convexmoon pool is machined and completed on a convex bed-jig, the concave moon pool and the convex moon pool are folded to form the moon pool, the whole moon pool is hoisted and arranged on a ship, the concave bed-jig and the convex bed-jig adopt integrally formed groove faces, any two adjacent faces of a concave groove of the concave bed-jig and a convex groove of the convex bed-jig are perpendicularto each other, and the moon pool adopts high-strength steel. The high-strength steel assembled ship moon pool assembly technology has the advantages that a separated manufacturing manner is adopted, the moon pool is manufactured away from a platform, deformation, caused by internal stress of a large steel structure of the platform, of the moon pool is avoided, and meanwhile the whole precision control of the moon pool is guaranteed through segmented control over the moon pool components.