Automatic production mode of cylindrical gear processing

Automatic production mode of cylindrical gear processing

1. Application and development of industrial robot technology Industrial robot is a wide range of robots, composed of operators, controllers, servo drive systems and detection sensor devices. It is a humanoid operation, automatic control, and reprogrammable electromechanical automatic production equipment. It can automatically complete various operations in three-dimensional space, especially suitable for multi-variety, batch and flexible production, improving working conditions, stability, and improving product quality It plays a very important role in improving productivity and rapidly updating products. In the field of modern manufacturing, with the rapid development of industrial automation, industrial robots have become the core equipment of automation. The interaction with the working environment is significantly different from that of general industrial CNC equipment. Generally speaking, industrial robots have the following remarkable characteristics:

(1) Imitation function. Industrial robots sense the working environment through various sensors to realize self-adaptation. The purpose of industrial automation is to imitate the waist, arm, wrist, paw and other parts.

(2) Programmable. As an important part of flexible manufacturing system, the programmable ability of industrial robot is the embodiment of its ability to adapt to changes in the working environment.

(3) Generality. Industrial robots are generally divided into general robots and special robots. For general industrial robots, only different terminal actuators need to be replaced to complete corresponding production tasks.

(4) Good environmental interaction. Without human intervention, intelligent industrial robots have the ability to adapt and control the working environment and the ability to plan themselves.

2 The production mode of gear automation is introduced in combination with the large-scale workshop automation project. The gear processing process is shown in Table 1. The layout of automatic production line for cylindrical gear processing is shown in Figure 1. The structure design of the gear processing automation system is as follows:

2.1 The blank storage rack and finished product storage rack are manually placed on the turntable. This turntable has 12 workstations, each of which has about 20 blanks stacked. The manipulator has a workstation (feeding position) I in the range of motion, and the manipulator can remove the blank at the top. Jacking device is set under the station. After the blank at the top is removed, the jacking device operates and sends the next blank to the top for the manipulator to use I for the next material withdrawal. In this action, after this row of blank is grabbed, the rotary table rotates clockwise for an angle, and turns the next row of blank to the loading position I of the manipulator I to grab. This is repeated to realize automatic feeding. The structure of the finished product storage rack is the same as that of the blank storage rack, and the action is opposite. The manipulator III blanking action is realized. After the finished product storage rack is full, the signal is sent out and the manual blanking action is performed.

2.2 Chain plate line A and chain plate line B Due to the large overall dimensions of CNC lathe 1 and CNC lathe 2, the range of motion of manipulator I and manipulator II is limited, so chain plate line A is used to realize the transportation of OP1 between them. Robot I places OP1 at the left end of chain plate line A, the motor of chain plate line A operates, drives OP1, and transports OP1 to the right end. There is a positioning mechanism to realize positioning, sensors detect materials, send signals, and manipulator II comes to grab. Chain plate line B is similar to chain plate line A in function, realizing the OP3 transportation of manipulator II and manipulator III. Each manipulator executive end is equipped with two claws, One claw is responsible for the OP1 outer circle and positive end CNC lathe 1OP2 inner circle and reverse end CNC lathe 2OP3 inner hole accuracy hole detector OP4 gear hobbing machine OP5 dryer OP6 chamfering machine OP7 dryer OP8 shaving machine OP9 drying dryer Figure 1 layout diagram of automatic production line for cylindrical gear processing ◆ equipment application and research equipment application and research ◆ loading and unloading actions of engineering equipment in Phase 483 of Electromechanical Information, Phase 21, 2016, The other hand is responsible for the loading and unloading of the processing equipment, which can realize fast loading and unloading like a human hand. The CNC lathe 1 corresponding to manipulator I is used for loading and unloading, the CNC lathe 2 corresponding to manipulator II is used for loading and unloading, and the gear hobbing machine, chamfering machine and shaving machine corresponding to manipulator III are used for loading and unloading. After the gear hobbing machine, chamfering machine and shaving machine are processed, the workpiece needs to be placed on the dryer. After drying, manipulator III is used for loading and unloading the next process.

2.3 The general control console is specially developed for the whole cylindrical gear processing automation production line, which can display the status information of each module in the subsystem and operate the equipment. It can be used in the automatic production line composed of CNC machine tools and robots, and can also be connected to the factory LAN to support remote equipment monitoring and process management, and realize the seamless combination of production automation and information and network. The above automatic production line for cylindrical gear processing is a new mode of gear processing. The number of processing equipment can be configured according to the processing time of each process, such as the long processing time of CNC lathe, and the manipulator II CNC lathe can be placed more; Manipulator III has a lot of corresponding processing equipment, so it can establish multiple units, and then use chain plate line for OP2 transmission. According to different situations, the number of processing equipment and manipulators can be configured, and the layout is flexible, which can improve equipment utilization and production efficiency.

Conclusion Gears are widely used in the mechanical industry, especially in the fields of automobiles and heavy machinery. Continuous meshing of gears can transmit motion and power. At present, most enterprises use manual operation in the process of gear chamfering and deburring, which is not only inefficient, but also has hidden dangers of industrial accidents for operators. In order to reduce production costs, improve labor productivity and improve labor conditions, many processing and manufacturing enterprises without exception turn their attention to industrial robots. Industrial robots are highly automated and mechanized mechanical equipment in the process of industrial production. They realize the organic combination of automation and mechanization. They are used in some environments with poor working environment, labor intensity and difficult for human beings to adapt. They can not only reduce labor intensity, but also improve labor productivity. Therefore, they are widely used in national defense, medical treatment and industrial production. It is of practical significance to study the new mode of gear automatic production to adapt to the development trend of the times. Analysis of tower crane anti-overturning stability Zhang Zhuo (Jiangsu Special Equipment Supervision and Inspection Institute (Wuxi Branch), Wuxi 214174, Jiangsu Province) Abstract: Since the reform and opening up, with the rapid growth of China's economic scale, the construction of high-rise buildings has also developed rapidly. As the main high-rise vertical transportation machinery, tower crane is widely used in the construction of main works. However, compared with other types of cranes, tower cranes have a higher center of gravity. When the whole crane loses its stability, it is easy to overturn and seriously threaten personnel and equipment. Therefore, how to ensure the stability of tower crane in the process of installation, operation and disassembly, so that it can better complete the lifting work, is the key problem to be solved in the construction industry. Firstly, the main factors of tower crane overturning are introduced, and then the checking calculation method of tower crane anti-overturning stability is analyzed to provide technical reference for improving tower crane. Key words: tower crane; Anti-overturning; Stability check calculation 0 Introduction tower crane is a crane that is perpendicular to the tower body and rotates the boom. Compared with crawler crane, tower crane has the advantages of larger boom length, lighter structure, higher lifting height, larger rotation radius, proximity to buildings, and high reuse rate. Therefore, it is widely used in building construction, especially in high-rise buildings, which plays an important role in speeding up the construction progress, shortening the construction period, ensuring the smooth construction and reducing the project cost. In the 1950s, the former Soviet Union introduced tower crane design and manufacturing technology and began to produce in China. After more than 60 years of development, the scale of China's tower crane industry has continued to expand, and the design and production technology has continued to improve. Especially since the reform and opening up, China's tower crane production has entered a period of rapid development, with a complete series of spectrum processing capabilities, which are exported to countries around the world. According to statistics, China exported 3928 tower cranes in 2014, with an export of 462183000 US dollars. At the same time, with the continuous development of China's construction industry, the demand for tower cranes is also increasing year by year. It is expected that this development trend will continue for some time. But at the same time, the problem of tower crane has also aroused widespread concern. The tower crane has complex structure and relatively bad working environment, resulting in frequent accidents. Among tower crane accidents, overturning accidents account for a high proportion and cause great personnel and economic losses. This paper first introduces the main factors that promote the overturning of tower crane, and then analyzes the checking method of tower crane's anti-overturning stability, which provides a technical reference for fundamentally improving the performance of tower crane.