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Aiming at the problems of low efficiency, poor reliability, and high labor cost in manual inspection of injection gears, the production and processing technology of injection gears are studied, the production environment of injection gears is analyzed, and a system integrating feeding, positioning, detection and sorting is designed. Automatic testing equipment. Through the establishment of a three-dimensional model of the mechanical system, the automatic control scheme of the mechanical system was designed, and the automatic control software was developed to realize the automatic guidance and precise positioning of the injection gear path on the production line, the clear acquisition of the gear image to be inspected, and the processing software according to the visual information of the host computer According to the test results, the injection gear is automatically sorted for good and defective products; finally, the test equipment is used in conjunction with the upper computer test software to conduct an experiment. The experimental results show that the speed of the glass turntable and the end face bounce have no effect on the test results, and the sorting accuracy of the inspected products by the blanking mechanism is 100%; the equipment can be deeply integrated with the injection gear production line to realize the production, inspection and sorting of the injection gear Choose integration. [ABSTRACT FROM AUTHOR]

Aiming at the low efficiency of traditional manual assembly motor bearings,and the vertical installation method has some shortcomings such as large area coverage,low generalization,complex equipment and high cost,a method and equipment of automatic installation of motor bearings based on horizontal type was put forward. A coaxial horizontal arrangement of the main motor and the positioning axis of the mounted bearing were adopted. The characteristics of the outer circumference of the main motor and the bearing component was used,to select the horizontal placement of the V-shaped block to position the main motor and the bearing,so that the feeding and positioning of the bearing are completely automated. The bearing feeding device,assembly mechanism,automatic transmission mechanism and PLC control system of horizontal installation equipment were designed. The results show that the equipment has a high degree of general automation,simple mechanism,small space occupation,good safety performance. [ABSTRACT FROM AUTHOR]

Aiming at the problems of time-consuming for laboring manual filling process of paraffin oil in the process of grease production, and difficulty in ensuring accuracy and real-time performance, an automatic filling device of paraffin oil that can automatically fill material, weigh and fill was studied, which based on the analysis of technological process and field layout. The mechanical structure of the device was made of aluminum profile as the base material, and the up-down distribution structure was adopted to integrate feeding, weighing and filling processes. PLC was adopted as the control system for electrical control, the structure of the control system was designed, the hardware composition of the control system to be raised. Based on PLC, the program of analog quantity information collection and communication with the weighing controller was compiled. The corresponding trapezoidal diagram and the configuration of man-machine interface were written. The results indicate that the device has the advantages of simple structure, smooth operation, high filling precision, greatly improves production automation. [ABSTRACT FROM AUTHOR]

Ａｉｍｉｎｇ ａｔ ｔｈｅ ｐｒｏｂｌｅｍ ｏｆ ｃｏｍｐｌｅｘ ｓｔｒｕｃｔｕｒｅꎬ ｐｏｏｒ ｂｒｏａｃｈｉｎｇ ａｃｃｕｒａｃｙꎬ ｕｎｅｖｅｎ ｂｒｏａｃｈｉｎｇ ｏｎ ｔｈｅ ｔｒａｄｉｔｉｏｎａｌ ｖｅｒｔｉｃａｌ ｉｎｔｅｒｎａｌ ｂｒｏａｃ￣ ｈｉｎｇ ｍａｃｈｉｎｅ ｗｉｔｈ ｈｙｄｒａｕｌｉｃ ｄｒｉｖｅꎬ ａ ｖｅｒｔｉｃａｌ ｉｎｔｅｒｎａｌ ｂｒｏａｃｈｉｎｇ ｍａｃｈｉｎｅ ｄｒｉｖｅｎ ｂｙ ｅｌｅｃｔｒｉｃａｌ ｓｅｒｖｏ ｓｙｓｔｅｍｓ ｗａｓ ｄｅｖｅｌｏｐｍｅｎｔ. Ｔｈｅ ｔｅｃｈｎｉｃａｌ ｐｒｉｎｃｉｐｌｅꎬ ｍａｉｎ ｐｅｒｆｏｒｍａｎｃｅ ｐａｒａｍｅｔｅｒｓ ｏｆ ｂｒｏａｃｈｉｎｇ ｍａｃｈｉｎｅ ａｎｄ ｔｈｅ ｃｕｔｔｉｎｇ ｐａｒａｍｅｔｅｒｓ ｏｆ ｗｏｒｋｐｉｅｃｅ ｗｅｒｅ ｐｒｏｖｉｄｅｄ. Ｔｈｅ ｗｈｏｌｅ ｍｅｃｈａｎｉｃａｌ ｓｔｒｕｃｔｕｒｅ ａｎｄ ｋｅｙ ｆｕｎｃｔｉｏｎ ｍｅｃｈａｎｉｓｍ ｏｆ ｂｒｏａｃｈｉｎｇ ｍａｃｈｉｎｅ ｗｅｒｅ ｄｅｓｉｇｎｅｄꎬ ａｎｄ ｔｈｅ ｄｅｓｉｇｎ ｏｆ ｂｒｏａｃｈ ｔｏｏｌ ａｎｄ ｔｈｅ ｃａｌｃｕｌａｔｉｏｎ ｏｆ ｂｒｏａｃｈｉｎｇ ｆｏｒｃｅ ｗｅｒｅ ｃａｒｒｉｅｄ ｏｕｔ. Ｔｈｅ ｅｌｅｃｔｒｉｃａｌ ｃｏｎｔｒｏｌ ｓｙｓｔｅｍ ｏｆ ｂｒｏａｃｈｉｎｇ ｍａｃｈｉｎｅ ｗａｓ ｄｅｓｉｇｎｅｄꎬ ａｎｄ ｔｈｅ ｃｏｎｔｒｏｌ ｐｒｉｎｃｉｐｌｅ ｏｆ ｅｌｅｃｔｒｉｃ ｓｅｒｖｏ ｄｒｉｖｅ ｓｙｓ￣ ｔｅｍ ａｎｄ ｔｈｅ ｄｅｓｉｇｎ ｐｒｉｎｃｉｐｌｅ ｏｆ ｅｌｅｃｔｒｏｎｉｃ ｃｏｎｔｒｏｌ ｓｏｆｔｗａｒｅ ｓｙｓｔｅｍ ｗｅｒｅ ａｎａｌｙｚｅｄ ｉｎ ｄｅｔａｉｌ. Ｔｈｅ ｖｅｒｔｉｃａｌ ｉｎｔｅｒｎａｌ ｂｒｏａｃｈｉｎｇ ｍａｃｈｉｎｅ ｄｒｉｖｅｎ ｂｙ ｅｌｅｃｔｒｉｃａｌ ｓｅｒｖｏ ｓｙｓｔｅｍｓ ｗａｓ ｕｓｅｄ ｉｎ ｂｒｏａｃｈｉｎｇ ｉｎｔｅｒｎａｌ ｓｐｌｉｎｅ ａｆｔｅｒ ｓｕｃｃｅｓｓｆｕｌｌｙ ｄｅｖｅｌｏｐｍｅｎｔ. Ｔｈｅ ｂｒｏａｃｈｉｎｇ ｔｅｓｔ ｒｅｓｕｌｔｓ ｓｈｏｗ ｔｈａｔ ｔｈｅ ｖｅｒｔｉｃａｌ ｉｎｔｅｒｎａｌ ｂｒｏａｃｈｉｎｇ ｍａｃｈｉｎｅ ｄｒｉｖｅｎ ｂｙ ｅｌｅｃｔｒｉｃａｌ ｓｅｒｖｏ ｓｙｓｔｅｍｓ ｉｓ ｃｏｎｖｅｎｉｅｎｔ ａｎｄ ｓａｆｅｔｙ ｏｐｅｒａｔｉｏｎꎬ ｓｔａｂｌｅ ｒｕｎｎｉｎｇꎬ ａｎｄ ｔｈｅ ａｃｃｕｒａｃｙ ｍｅｅｔｓ ｔｈｅ ｒｅｑｕｉｒｅｍｅｎｔ ｏｆ ｔｈｅ ｍａｃｈｉｎｅｄ ｗｏｒｋｐｉｅｃｅ. [ABSTRACT FROM AUTHOR]

Aiming at some probolem of the high speed tain carrige preassembly,such as non-reusable,poor flexibility and low degree of automation,the high speed railway carriage flexible preassembly was studied.The preassembly conposed of the internal and external walking gantry and corresponding manipulator was proposed.The power of the internal gantry manipulator positional movement and positioning of the assembly points was provided by the external walking gantry manipulator.The flexible assembly control system combined with PLC control software and human-machine interface software was achieved through development of distribute control system based on delta touch screen and PLC.The pre-assembly process automation and intelligence was achived finally through the PC software planning and management.The experimental results show that the system can realize the real simulation of the railway carriage assembly environment,and accurately locate the position of the key components inside the carriage,further more it can flexibly configure according to carriage conditions to achieve a number of functions such as flexible assembly.This system has some practicability and promotion value. [ABSTRACT FROM AUTHOR]

Aiming at the heavy energy-consumption of the central air conditioning system, by analyzing the structure and working principle, it was clear that electronic expansion valve as throttling element and the control of electronic expansion valve were the key factor to achieve energy saving and reliable operation, a control system of screw chiller based on S7-200 PLC and MCGS configuration monitoring was designed. To control the superheat of refrigeration system, the incremental PID algorithm was used to control the opening of the electronic expansion valve. To realize compressor four section accommodation energy regulation, the balanced load algorithm was used. The hardware design, PLC control program and MCGS configuration software program design were completed. The results indicate that the control system has friendly man-machine interface, high intelligent level and reliable performance. [ABSTRACT FROM AUTHOR]

Aiming at the heavy energy-consumption of the central air conditioning system, by analyzing the structure and working principle, it was clear that electronic expansion valve as throttling element and the control of electronic expansion valve were the key factor to achieve energy saving and reliable operation, a control system of screw chiller based on S7-200 PLC and MCGS configuration monitoring was designed. To control the superheat of refrigeration system, the incremental PID algorithm was used to control the opening of the electronic expansion valve. To realize compressor four section accommodation energy regulation, the balanced load algorithm was used .The hardware design, PLC control program and MCGS configuration software program design were completed. The results indicate that the control system has friendly man-machine interface, high intelligent level and reliable performance. [ABSTRACT FROM AUTHOR]

Aiming at the problem of lower reliability of a sand transport experiment, the hard redundancy technique was investigated. Based on SIEMENS PLC 400H, respectively in the CPU, communication network and the host computer, the control system of a sand transport test stand with redundancy and fault safety function was established. Meanwhile，the control and parameters acquisition of 315kw inverter of SIEMENS MIDIMASTER series were realized through USS protocol and Y-Link module, then the interference of high power inverter was reduced and the acquisition parameters were enriched. The results indicate that the fault-tolerance performance of the redundancy control system is very high, and the control failure which is caused by crash, communication interrupt, CPU fault and so on, can be effectively avoided. So the control reliability of the test stand is improved greatly. [ABSTRACT FROM AUTHOR]

Aiming at the problems of the traditional tapping processing craft of nut’ whose processing efficiency was low and there existed potential danger’ multiple research was applied on the nut tapping processing including feeding’ positioning’ clamping’ tapping’ unloading’ etc. A set of full-automatic feeding and tapping system was designed for processing of nut. This system can be mainly divided into these sub systems; automatic feeding system (Vibrating plate)’ automatic tapping and processing console system. 3D modeling software Solid works was used in the structural design of the vibrating plate and the processing console. For the electrical control part’ Mitsubishi PLC programming software Gx-Developer 8.86 was used in the design of the ladder diagram’ and Mitsubishi PLC simulation software GX-Simulator 6 was used to verify the feasibility of the ladder diagram. The results indicate that the system can adapt to the requirements of the production of flexible automation processing with high reliability’ which will become effective measures and main methods to improve labor productivity and the working conditions’ it having a wide application prospect. [ABSTRACT FROM AUTHOR]

Aiming at automatic gelatinizing, loading and unloading aluminum frames which were needed in the assembly process of solar panel, reasonable operation process of the aluminum frame was programmed, the control strategy of gelatinizing, loading and unloading aluminum frame was researched. And an automatic control scheme was put forward. It's mechanical structure was established by Solid Works software, and it's control system was designed by PLC and HMI. Through the PLC controlling servo motor and electromagnetic valve, the ball screw, synchronous belt and cylinder were driven, then the motion of loading material, gelatinizing, unloading material were completed. During equipment debugging, the results indicate that the agencies can work cooperatively, cooperating with touch-screen, high production efficiency can be acquired, and it also can save work time and human resources, this equipment can satisfy the mass automation production of the enterprise. [ABSTRACT FROM AUTHOR]

In order to solve the problems of transporting the welding parts to the work place by means of manual trolleys, in a factory which manufactured large steel structure, a transport vehicle calling system was designed. The system could transfer the welding parts to the positions automatically and effectively. Based on PLC core control technology, the software and hardware of the control system were designed. The electrical control system schematic and PLC interface address allocation table were designed. The calculation method in the limit current resistance of the seven segment digital tube was analyzed by examples. The main components of the system detail table were provided. A flow chart of the main program and the related functions programs were included. The requests of the software function test could get by the touch screen simulation. And after it was passed by the site installation, then was produced. The research results show; the control system fully meets the control requirements. It is stable and reliable, flexible and convenient to control. It can improve the production effectively. [ABSTRACT FROM AUTHOR]

Aiming at the problems of the stability of heating,furnace automatic control instruments and real-time monitoring. The problems of heating furnace temperature control system, cascade control system, temperature & pressure setting of furnace and safety interlock system were discussed. Some accidents were analyzed , such as the entrance of high-pressure blower was reduced, heating furnace stopped because of low air pressure and the water-level increased due to unreliable water level treasuring which results in the water-level of heating furnace increases. The high pressure blower PI automatic regulation system and PLC real-time monitoring technology were summarized. Some suggestions were given on how to improve PI controller, PLC control program and methods for the abnormal state of equipments in real-time monitoring. The results of study show that the two high-pressure blower inlet regulator are flexible, convenient and stable. No interference problems. The monitoring for the bottom water level of heating furnace and the accident rate are reduced greatly. The automatic control system of heating furnace after being optimized has the characteristics of stability, high precision and low failure rate, which reaches the standards of the design. [ABSTRACT FROM AUTHOR]

Aiming at the problem of output splitting force unstable, large impact in processing, and low automation degree of the connecting rod fracture splitting machine tool, the machine mechanical structure and hydraulic system were introduced, then high pressure and large flow output of the hydraulic cylinder and eliminating the gap between the work-piece and fixture were studied. It′s was proposed that the pressure sensor combined with accumulator were used to optimize the control strategy of hydraulic system. Also, the connecting rod fracture process was improved. The machine tool control system included hardware system and software system, the hardware of the control system was designed based on Mitsubishi PLC, touch screen and A/D input module, and the following programs were designed: process parameters setting, real-time monitoring, automatic operation, fault alarming. The results indicate that the control system can real-time monitor hydraulic system to ensure the output of splitting force and load speed of the force, the machine works stability, and is convenient to operate. [ABSTRACT FROM AUTHOR]

Aiming at realizing linear interpolation for a robot based on PLC controler, the methods were studied to reduce the requirements of the controller′s hardware configuration and performance for the robot linear interpolation motion. A linear interpolation algorithm based on constant time intervals (namely is constant time period method) was proposed. The interpolation period was used to adjust the interpolation precision, thus further to change the requirements of controller′s running speed and data storage space. The interpolation algorithm was applied and verified on a self-developed four joints stamping loading and unloading robot based on Panasonic FP-X PLC controller. The qualitative and quantitative analyses of interpolation error were also carried out. The results indicate that the proposed algorithm can fully run on a general PLC without interpolation commands and meet the requirements of linear interpolation precision, which is important to reduce the development cost of robot. [ABSTRACT FROM AUTHOR]

The thermal expansion valve is one of the important parts in automobile air-conditioning, which affect the refrigerating effect, operation life and so on. Aiming at the weakness of current test methods and the lack of performance test system, the performances test methods were investigated for degree of superheat, inter-leakage and durability. The test methods for degree of superheat and inter-leakage were proposed based on the flow principle and differential pressure principle separately, and the time parameters for durability test were optimized. Meantime, a kind of testing system was investigated based on PLC control technology, in which the graphical programming language VB was used as control software development tool. The test system could implement automatic test of thermal expansion valve on the degree of superheat, inter-leakage and endurance performance according to standard testing requirements. The experimental results indicate that the proposed test methods can meet the primary performance test demand and the designed test system has higher measurement accuracy, test efficiency and automatic level for thermal expansive valve. [ABSTRACT FROM AUTHOR]

Aiming at realizing the removal of hydraulic system testing equipments, modular design was implemented. The whole system was divided into two modules F the module of powersource and testing and the module of auxiliary oil source and control. The hydraulic testing system was divided into two sealed cabins through rational distribution and can be moved to the desired offshore drilling platform through lifting and transportation. The controlling system also take distribution as the control strategy. PLC and intelligent instruments were taken as the lower computer and IPCs(industrial personal computer) and monitors constituent for the upper computer. The hardware configuration and software programming of PLC were accomplished through utilizing STEP7. The HMI was configured on the IPC by WinCC. Two control modes of totally automatic control and half automatic control were realized at last. The hydraulic components testing tasks can be realized efficiently through actually using. [ABSTRACT FROM AUTHOR]

Aiming at realizing the monitoring of the stage position in real time and lifting with high accuracy, the communication between host-computer and PLC, the FINS protocol and the communication instructions of variable-frequency drive were introduced, and the stage control system based on RS485serial communication and Ethernet was designed and implemented. Based on VC ++ 6. 0software development platform and the Winsock ActiveX, the position of the stage can be obtained by reading the PLC's acquisition data of encoder pulse. The stage could be controlled to move independently or jointly by sending commands to the variable-frequency drive machines with the serial communication module. And a method of lifting control through writing the memory of PLC was presented. During the commissioning, a method of amending the stopping distance was presented to ensure the accuracy of stop position. The application results indicate that the system is stable, flexible and low cost, and can meet the design requirements. [ABSTRACT FROM AUTHOR]

Aiming at the problem of weak monitoring ability, poor reliability and low automation level, sensor, programmable logic controller, paralleling and protection unit, power console were applied into integrated ship power control system. After the analysis of demands, the relationship among management layer, control layer and data layer was established. A comprehensive ship power control method was put forward. The system was applied in kinds of experiments and ships, the results indicate that the system can improve monitoring ability, reliability and automation level. It can also ensure the safety, reliability, quality and economy of the ship power system. [ABSTRACT FROM AUTHOR]

Aiming at the characteristics of high control requirements and a large number of control object in Modern stage control system, as well as the problems of the traditional relay stage control system such as automatic positioning difficulties, high failure rate, the heavy maintenance and etc, combining the development and characteristics of fieldbus technology, the control strategy and application of the real-time dynamic control on the modern stage equipment were presented, which is to the touch screen as man-machine interface, S7-300PLC as the control core, through the Profibus fieldbus control AC variable frequency speed regulation system based on MDX61B converter to achieve. Several applications and system control methods in modern stage control system were provided, which is based on Profibus fieldbus and AC variable frequency speed regulation system of MDX61B converter. The results indicate that the centralized control for the dispersion function unit is realized through the fieldbus technology, the system has a fast dynamic response, high reliability and economy of the superior characteristics. On the development and research of modern stage control technology has a certain reference value. [ABSTRACT FROM AUTHOR]

Aiming at the problems of intense work, high risk, low precision and complex operation, a large thrust linear induction motor (LIM) was designed, programmable logic controller (PLC) was used to realized the whole functions of wood processing, the woodworking machine was proposed and designed finally. Linear induction motor(LIM) was used to drive the workbench so as to cut the wood, and a servo motor was used to feed the wood with a given cutting thickness. A programmable logic controller (PLC) was wutlized to control the LIM and servo motor respectively for a dynamically regulated cutting speed, as well as for setting and displaying the system parameters in the human-computer interface. The results indicate that the system reduces the labor intensity and manual help; on the other hand, it has a higher reliability, longer life and more flexible use compared to the conventional drive system which is fed by a servo motor through a ball-screw mechanism. [ABSTRACT FROM AUTHOR]

Aiming at the disadvantages of conventional mechanical cam; points or lines contact, highpressure, easy to wear, noise, difficult to machine, an electronic cam was designed. The cam motion characteristics, motion curve, motorcontrol, servo control was studied, a design of electronic cam control system based on Mitsubishi Q series PLC was proposed with double CPU servo control, which can deal with the sequential control and motion control, the control precision and control efficiency was improved. A closed loop control mode was employed. The servo-motor's position and speed instructions were calculated by the position encoder, which drive the push rod move straightly back and forth. At the same time, as a comparison with electronic cam, a mechanical cam structure was maded. The experiment results indicate that can any kinds of reciprocating motion can be gained by using the electronic cam. By adjusting the input curve of electronic cam, the effect of completely replacing the mechanical cam can be realized. [ABSTRACT FROM AUTHOR]

Aiming at load distribution in paper machine drive control system, load distribution causes, influence and mathematical algorithm for paper machine were studied, load distribution control scheme based on PLC network communication was put forward, and by using Matlab/Simulink toolbox, load distribution control scheme was simulated. Finally, by using Matlab software, GUI interface "Trace. FIG" was developed. The collected signal was filter processed by "Trace. FIG", and was displayed on the graphics coordinate data waveform. The results indicate that, this control scheme can real-time monitor the paper machine drive current, and adjust the frequency through the ModBus communication, load distribution can be realized. This control scheme sunning stable and reliable since the working. [ABSTRACT FROM AUTHOR]

Aiming at the problems of low automation degree, high labor costs, low polishing eeficiency, diificult polishing and no-failure warning for large-scale screw polishing machine, programmable logic controller (PLC) technology and human-machine interface were used on the control system of the machine. After the analysis of the rotational speed of large-scale screw and movement speed of polishing belt, the relationship of the rotational speed of two motors was established. It was proposed that adjusting the initial position of the large screw in dynamic regulation, detecting the position of the abrasive belt with a limit switch, and detecting the operating temperature of the motor by the temperature sensor. The overall block diagram, flow chart and an electrical schematic diagram of the control system were given. Moreover, control software for the system was developed. The results indicate that, the control system can solve the problems of diificult polishing and low eficiency for traditional large-scale screw. The interface of the control system gets the advantages of simple and easy to operation. The introduction of sound and light alarms is convenient for discovering and maintaining troubles of motor, and improves safety performance of the system. [ABSTRACT FROM AUTHOR]