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1、机械毕业设计外文翻译原文(万能!) CA6140 lathe CNC turret design transformation L i Yunchao Northeast China Electric Power University 132022 China 466595838 Abstract: The transformation of ordinary machine tools are CNC machining of small and medium enterprises to improve the accuracy of a way to reduce the auxilia
2、ry processing time is now shorter processing time is a major means of automatic rotary tool holder so the transformation is the main part of NC. Keywords: CNC turret rotation transformation of the Hall element 1 Introduction Machine is the basis of equipment manufacturing industry, which directly af
3、fects the level of technology manufacturing industry. Currently, the processing center as the representative of the NC machine tool commonly used by developed countries has become a modern industrial manufacturing plant processing unit. From the development of general machine tools to CNC machine to
4、ols, machine tool structure in the transmission and a leap forward with this adaptation, CNC machine tools in its structural design will surely require new design methods and theories to guide. China as a developing country, the CNC machine tools are expensive, some SMEs unable to acquire CNC machin
5、e, so the general transformation of NC machine tools is a better and more economical way, a CK6140 needs funds 115,000, while the CA6140 CNC Lathe 2.7 million renovation needs. Machine tool holder is one of the main components, but also one of the objects need to transform NC. Turret accuracy, rigid
6、ity and reliability of a direct impact on machine performance, in the deadly machine analysis, the deadly turret is the highest degree, digital control system to issue commands, the turret does not turn position, knife switch bit errors, misplaced turret, turret alarm, turret tool change and a serie
7、s of failures can not be normal so that the machine will not work properly. This paper briefly describes the economic CA6140 Machine Tool CNC turret part of the transformation of the transformation of design. The need for reform knife, according to the modified object to determine the main processin
8、g machine. If using a knife to complete the processing on this machine, there is no need to transform the knife. For multi-knife, such as lathe modified take three or four knives to complete all the sewing process, we must transform the turret components. That removed the original manual turret, fit
9、ted with electric or hydraulic drive controlled by the numerical control device of automatic knife. Turret lathe is mainly used for holding the cutting tool used, so a direct impact on the structure function of the cutting lathe and cutting efficiency, according to the type of machine tool holder, p
10、roperties and use the occasion of the comprehensive comparison, the specific use by the Changzhou Wang of CNC equipment factory production L D4-CK6140 four-station automatic rotary tool holder. The turret has shifted fast, high positioning accuracy, the advantages of tangential torque, sending trans
11、location by the Hall element, long life. Rotating turret with automatic replacement of ordinary knife, remove the original turret and small slide plate, put LD4-CK6140 electric knife. 2, the turret control design 2.1 The process of tool change Rotating turret tool change, the first cutter release (l
12、ift), cutter knife near translocation arrived at the designated position, the last cutter reset (drop) clamping. When the control 2022 Second International Conference on Digital Manufacturing & Automation instruction issued by ATC, through the interface circuit to the motor is transferred, by the st
13、ructure of transmission and drive down knife tooth plate on the knife and have a elevation action. Then turret body translocation, when the tool holder indexable cutter to need, the Hall switch feedback signal to the motor reversal, the tool rest stops, so that it falls in that location, after the k
14、nife to achieve precise positioning, Turret clamping motor to reverse, when the two teeth to a certain clamping force plate, the numerical control device issued a directive to stop the motor reversal, reverse and prevent the motor overload stop the destruction to complete a tool change process. 2.2
15、Implementation of ATC functions Turret tool change process to achieve through the auxiliary control PL C. Set up a Hall sensor position detection tool, knife switch signal as a PLC input signals. PLC on the turret of all the I / O signal processing logic and judge, to achieve turret tool change the
16、order of the process control and automatic tool selection, tool change to allow the signals sent by the CNC system. Switch signal is defined as X (ie the interface of the I signal) PLC output to the tool holder of the switch signal is defined as Y (ie the interface of the O signal) by setting the sy
17、stem parameters in the PL C hardware configuration coefficient and system parameters . Figure 1 controls the turret main circuit operation Figure 2, the Hall element letter tray Figure 1 is to control the operation of the main circuit turret, turret motor controlled by the KM1 Forward looking forwar
18、d to achieve knife knife, knife motor reversal by the KM2 control to achieve reverse lock knife; Figure 2 letter tray the Hall element, the tool rest on every knife is a fixed cutter, the cutter by the Hall switch in place testing, tool change program instruction specified by the target tool number,
19、 tool change system operation to the instruction. ATC will be issued to allow the PLC signal, turret motor clockwise rotation, Hall switch blade position detection, if detected, the cutter location and procedures consistent with the target knife position, the knife to stop the clockwise rotation of
20、the inverse clockwise rotation, tool holder locking reverse positioning. If the requirement can not be completed within the time monitoring the forward and reverse locking tool selection, tool change process is automatically ended, the election monitoring tool time and time lock set by the PLC timer
21、. 3, Conclusion In the NC lathe, the methods described in this paper is easy to implement, especially in the economic transformation of the NC can be widely used. Practice has proved that after transformation, using three-phase asynchronous machine motor, worm gear, the transmission ratio can be lar
22、ger, stable tool change, reliability, and to overcome the traditional machine tool supporting the shortcomings of long processing time, tool change time is short, high efficiency . References 1?CNC Technology Machinery Industry Press, second edition Zhu Xiaochun 2?Guangxi School Metal Cutting Machine Tools Machinery Industry Beijing: China Machine Press. 1979,2 3?Department of Beijing Institute of Aeronautics CNC machining the structure and transmission. Beijing: National Defence Industry Press .2022,1