Multi-axis synchronized control of a broaching machine with permanent magnet AC servo motors
Permanent magnet AC servo motor, with power continuity, power transmission loss degree is low and other characteristics, in the modern industrial efficient production, occupies an unignorable position. Based on this, this paper combines the basic principles of permanent magnet AC servo motor design, focusing on the permanent magnet AC servo motor, the application of multi-axis synchronous holding system in the pull-down bed, to realize the comprehensive utilization of new technologies, to enhance the social and industrial development of the effect of technical work.
High-speed power transmission mode, for the modernization of industrial resource development to provide a guarantee for the tendency of the modern society chemical technology innovation, provides a more reliable guide. In order to further bring into play the advantages brought about by the efficient production of new industries, it is necessary to seek a way to provide long-term power protection for industrial work, based on the permanent magnet AC servo motor can meet the power transmission needs, and to realize the integrated guidance of the digital and intelligent chemical industry production structure.
1. The working principle of permanent magnet AC servo motor
Permanent magnet AC servo motor, the application of internal use of electric motors for asynchronous motor drive conversion, driven by the external broach power transmission, so that the lower broaching bed in the knife surface work, always controlled on the basis of the motor operating rate, so as to ensure that the motor drives the card knife cycle of work. When the permanent magnet AC servo motor running frequency, and the internal screw rotary encoder data rotation rate is the same, the collection of information program, will implement the monitoring board and the cooperation table docking movement, the realization of the main skateboard power control part, always remain stable, thus circumventing the problem of traditional mechanical power loss, driven by the motor to do the work of the cyclic cycle.
2. Based on permanent magnet AC servo motor under the broaching machine multi-axis synchronization control system analysis
(1) Differential signal transmission of machine tools
Compared with the traditional signal processing mode, permanent magnet AC servo motor, in the pull-down machine multi-axis synchronous power structure, can be the same sex transmission signal, converted to differential transmission signal, we call this signal for RS-485 signal. The difference between this type of signal and the traditional signal is that it can synchronize the same signal transmission to the different windows of the pull-down machine tool, thus ensuring that the stage of the machine tool to do the work of the signal transmission, and the high efficiency of the mechanical hardware to do the work of the mode of mutual coincidence, to ensure the stability of the signal transmission.
For example: a pull-down machine tool signal strength of 5, the traditional signal transmission, is in accordance with the order of the signal transmission from near to far, therefore, the pull-down machine tool for each work state, are the first time to do the work of a smooth, slow work in the late state. When the permanent magnet AC servo machine is used for processing, the structure of each work process is to copy the same signal strength, and then carry out stage-by-stage signal processing. This comprehensive signal transmission method can always ensure that the work rate of the pull-down machine tool is stable, and realize the stability of the machine tool work.
(2) Program exchange protocol
The use of permanent magnet AC motor structure, also with the help of standardized information transmission mode, that is, MODBUS protocol as a representative of the lower broaching bed structure transmission tendency. On the one hand, MODBUS protocol program, two broaching servo system and a knife system connection part, add a terminal resistance system; On the other hand, the protocol in order to ensure that the motor power transmission rate is stable, the implementation of power transmission mode of coordinated operation.
When the multi-axis control structure of the broaching machine carries out the power transmission, the system can be based on the design, the MODBUS protocol transmission code, converted into a control command, and on the basis of permanent electromagnetic induction mode, the implementation of the cyclic transmission of the power of the broaching machine. This coordinated transmission mode can enhance the rate of information transmission and ensure the automated adjustment of the program commands of the machine control section when the pull-down machine control system rotates cyclically, thus ensuring the rate of transmission of the system’s work and realizing the cyclic adjustment of the work system.
(3) Machine tool servo parameter evaluation system
The permanent magnet AC motor implements the synchronization adjustment of the machine tool transmission mode on the basis of the multi-axis motor transmission control of the broaching machine.
First, the internal program of the multi-axis transmission of the pull-down bed sets the communication parameters for information transmission. When the transmission structure of the pull-down motor meets the parameter criteria for signal transmission, the machine structure will maintain stable transmission; otherwise, the machine conduction structure of the various parts of the pull-down bed multi-axis will be in temporary stasis. In other words, the permanent magnet AC motor in the pull-down bed multi-axis control state of the work done, so that multiple servo control tool work rate, are adjusted to a uniform rate. Pull-down machine multi-axis work, there will be no servo tool work differently, resulting in the occurrence of the pull-down machine work waste.
Secondly, permanent magnet AC motor in the pull-down machine tool multi-axis control system applications, but also the application of servo test wave interface for information transfer. For example: a section of the servo signal wave test results for the 10-16 smooth fluctuation section, then the permanent magnet AC motor for power transmission guidance, the system first permanent magnet servo transmission wave monitoring, and then with the help of MODBS communication protocol signals, the implementation of the signal transmission data acquisition until the pull-down multi-axis machine tool to do the work of the data, the same as the signal wave information captured by the PC image of the signal wave, the permanent magnet signal wave before the completion of a signal transmission cycle. Considered to be completed a signal transmission cycle, the start of signal transmission. Its system later transmission system for self-check, the internal program code is also automatically positioned to ensure the stability of the servo structure performance signal detection waveform.
Finally, the operation of the permanent magnet AC servo motor under the broaching machine multi-axis operation mode, but also in the process of program cyclic rotation, retaining the external power and internal program coding docking space. When the pull-down bed multi-axis transmission structure, the signal transmission process is like a slide show, one by one, the pull-down machine tool multi-axis operation of the external program, the implementation of information replacement, to ensure that the motor pull-down bed multi-axis synchronization control system information transmission.
(4) Machine Tool Work Conduction
Motor pull-down bed multi-axis synchronization control system, is based on the basis of the traditional machine tool cutting work on the basis of the implementation of work on the linkage conduction. Permanent magnet AC servo motor of each work, in addition to timely feedback on the actual situation of machine tool products cutting, but also on the motor under the broaching machine multi-axis synchronization control system, fault problems for feedback. For example: permanent magnet AC servo system transmission work, are used in binary, decimal, and hexadecimal parameter information, the correctness of the data signal conduction, therefore, when the multi-axis mechanical control system of the downward sliding bed failure, permanent magnet AC servo motor, cycle work program binary will be changed in the first time, the signal transmission structure of the signal transmission code, naturally, will also be changed, to ensure that motor The accuracy test of the problem of the failure of the multi-axis synchronization control system of the down-drawing bed.
3. Conclusion
In summary, the analysis of multi-axis synchronous control system of broaching machine based on permanent magnet AC servo motor is a representative of the comprehensive upgrading of modern industrial technology. On this basis, in order to give full play to the advantages of the multi-axis synchronous control system of the pull-down bed under permanent magnet AC servo motor, the comprehensive guidance of the differential signal transmission of the machine tool, the program exchange protocol, the servo parameter evaluation system of the machine tool, as well as the work conduction of the machine tool should be guaranteed. Therefore, the exploration of multi-axis synchronous control system of broaching machine based on permanent magnet AC servo motor will be the representative of comprehensive upgrading of industrial technology in the new period.