經(jīng)濟(jì)型數(shù)控車床進(jìn)給伺服系統(tǒng)設(shè)計(jì)
經(jīng)濟(jì)型數(shù)控車床進(jìn)給伺服系統(tǒng)設(shè)計(jì),經(jīng)濟(jì)型,數(shù)控車床,進(jìn)給,伺服系統(tǒng),設(shè)計(jì)
GENERAL DESING INTRODUCTION
GENERAL DESING INTRODUCTION
As science and technology and social development of the continuous production of the machine product quality and productivity of the ever-increasing demands. Machining process automation to achieve the above request is the most important one, It not only improve the efficiency of production and reduce production costs, but also improve the worker's labor condition consumedly.Full-function CNC System although function abundant, but the cost is high, my general difficulties in the acquisition of small and medium enterprises. our country general of medium the small scaled business enterprise purchase difficulty, and hope to transform the original machine, NC, automation transformation, to improve production efficiency. Moreover, enterprises now have a large number of general machine tools, complete with CNC machine tools is simply impossible to replace. and alternative from the machine idle up will lead to waste, in order to solve these problems, should follow the general transformation of CNC machine tool path. It is in such circumstances, the general transformation of CNC lathe.
And from the United States, Japan and other countries the process of industrialization, transformation of CNC machine tools is also essential. Number control reformation tool machine to occupy a greater comparison, such as in earlier period, Japan of have 26 percent tool machines to pass by in the big business enterprise number control a reformation, in small business enterprise then 74 percent have in the United States many number control profession to turn a company, provide a tool machine number to control a reformation service for the world-wide locations.Therefore, the general transformation of CNC machine tools is not only the necessary and promising. especially the SMEs especially.
NC general transformation of general machine tools must do certain parts of the transformation, accompanied NC devices so that the NC machine tools with its ability to transform the purpose of the following :
（1）From the capital increase efficiency and transform the idle equipment, machine tools to play the original functions and transformation of the new features, raising machine value.
（2）In order to improve production efficiency NC transformation.
（3）In order to adapt to multiple types of small batch production of parts for NC transformation.
（4）For technical workers with lower grades can be processed into high-quality parts and products to improve productivity for NC transformation.
（5）To reduce the overall equipment investment for the project NC transformation. All these objectives are centered on the fact that raising the functional machine with relatively small price to be higher machine performance. To this end, we ordinary CA6140 lathe for the study.
The design principle is : to satisfy the overall layout of the machine under the conditions of the original as much as possible the use of zero, components, minimize the changes, particularly for the larger machine parts. This can greatly reduce costs and shorten the manufacturing cycle. Undertaking economic NC machine tool design, although unlike the transformation of structure size stringent design, However, we should also make reference to the same type of machine. In preliminary calculation then, fashion, the structure is relatively compact size.
Design of the main tasks are :
1,Translate the 5000 printing symbols foreign materials.
2,Mechanical parts design modifications :
(1) Feed a part of assembly drawings, blueprints, 0
(2) Several major components map.
3, The hardware design
NC paint system hardware circuit, drawing on the 1st.
4, software design :
(1) NC program diagram design, drawing on the 1st;
(2) 8031 MCU and stepper motor interface maps, drawings on the 1st.
The actual tasks are : to identify the overall program; Mechanical parts (ball screw and gear drive stepper motor) the specific design; CNC system hardware design and software design.
Design of system configuration and main technical specifications :
The system consists of MCS-51 microcontroller 8031 the system, interface circuit, driving circuits and components such as stepper motors, and open-loop system is a control system. Its main technical functions and parameters are as follows :
system control part. Used 8031 system, the keyboard and display panel mounted on.
(2) System environment working conditions. The range of temperature is from 12 degrees below zero centigrade to 40 centigrade; The range of humidity is from of 40 percent to 80 percent .
(3) stepper motor. 150BF a Taiwan-based motor driving voltage of 110 V; Current Phase is 2 .5A ; step angle is 0 . 75 ° / step.
After transformation, CNC lathe processing capacity, the level of automation and processing accuracy noticeably improved, and overall production efficiency has been greatly improved, then our economic situation, it is a good direction for research.
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