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双语推荐：G指令

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论述了数控编程中正确使用G指令的意义。以数控车工编程为例,指出了G指令使用中存在的几个问题,介绍了正确使用G指令的几点心得,供广大数控编程初学者共同探讨、借鉴。
This paper discusses the proper use of G instruction in NC programming .Taking a NC lathe programming as example ,the paper points out some issues which should be pay attention in the usage of G instructions ,to provide some reference for the beginners to NC programming .

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FANUC-0i数控车削加工轴类零件使用G71指令编程方便，加工效率较高。但是，G71指令加工轮廓必须具备径向尺寸单调递增、递减的限制条件，不能直接加工凹形轴类零件。本文通过实例阐述了综合、灵活应用G71、G73、G70指令加工凹形轴类零件的方法与技巧，既保障了零件的加工精度又提高了加工效率。
FANUC 0 the numerical control turning processing shaft parts I use G71 instruction programming convenient, machining efficiency is higher. G71 processing instruction outline, however, must have a radial size constraints of monotone increasing and decreasing, cannot be directly processed hollow shaft parts. In this paper, through examples the application of comprehensive, flexible, G71, G73 G70 instruction processing and the method and skill of hollow shaft parts, guaranteeing the machining precision of parts and improve the processing efficiency.

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本文对FANUC Oi-mate数控车床在手工编程中用到的粗车指令G71与G73进行了应用上的对比分析,叙述了G71、G73在走刀路线上的不同,并举例说明G71和G73指令的不同使用方法及需要注意的事项。
The paper makes an analysis and comparison on the application of FANUC Oi-mate CNC lathe used in manual programming of coarse instructions of G71 and G73 , the G71 , G73 in the tool path on the different matters , and illustrates the different usage of G71 and G73 instructions and need to pay attention to .

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对教材上的坐标旋转指令(G68)应用例题的程序进行仿真加工,结果发现与图纸要求的形状不相符,分析其原因是该指令没有坐标原点平移的功能。要正确使用该指令实现加工,可以先采用坐标原点平移,再旋转的方法;或采用先控制刀具运动到旋转中心,再执行旋转指令,旋转指令后的程序段都采用增量值编程的方法。对这两种方法进行编程和仿真加工,结果显示符合图纸要求。
After the simulation machining of the program of the example applied in coordinate rotation com-mand (G68) in the text book ,it is discovered that the result is inconsistent with the shape required in the drawing .The reason is that there is no translation of the origin of coordinate in this order .In order to use it correctly ,two ways can be used ,translation of the origin of coordinate ,then revolving ;or controlling the tool moving to the rotating center ,then revolving .T he result of simulation machining is equal to the paper .

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在数控生产实训的教学过程中,学生根据零件图能够手工编制出零件加工程序,却因为不会对刀而加工不出合格的零件。有鉴于此,针对数控生产实训教学过程中采用FANUC 0iT系统的数控车床,结合复杂零件的手工编程实例,依次使用刀具补偿T指令、G54~G59指令和G50指令3种方法进行了对刀操作,并详尽阐述了3种多刀对刀方法的步骤、注意事项、区别及联系,为数控教学和中小企业的实际对刀提供了参考。
According to part drawing,the students can program NC programming manually in teaching process of CNC production training,but most of them dont process qualified parts because of lack of the adjusting tool methods knowledge. Through manual NC program example of complex part,three different useful manual adjusting tool methods were introduced by using FANUC 0iT system NC lathe in teaching process of the CNC production training. These three manual adjusting tool methods were using the instruction for the cutter compensation T,G54~G59,and G50 in turn. The steps,using attentions,distinctions and relations of these methods to manual adjusting tool were discussed in detail. It provides instructive reference for practical manual adjusting tool of NC teaching and small and medium-sized enterprises.

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数控车削加工中内（外）径粗加工复合循环G71指令使用较多，很我学生不理解其中参数的含义，只能照搬照套，不能根据具体情况灵活运用，笔者根据自己多年的教学经验总结了一些方法，使学生能更好地掌握数控车G71指令的运用。
CNC turning inner (outer) diameter roughing cycle G71 instruction using more complex, many students do not understand the meaning of the parameters, can only copy the photo sets, not flexible use depending on the circumstances, through his years of teaching lessons some methods so that students can better understand the use of CNC lathe G71 in-struction.

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介绍了数控加工中心有基准刀时的对刀过程,在对刀过程中快速确定刀具长度补偿的方法,分析该方法的特点。同时介绍了可编程数据输入指令G10的格式,结合加工实例,以Fanuc Oi Mate数控系统的格式,阐述了通过G10指令在程序中改变刀具长度补偿值的编程方法。
In this paper, the process of NC machining center with a reference tool knife is introduced, rapid determination method of tool length compensation in the cutting process and the characteristics of this method are analyzed .At the same time programmable data input G10 format is introduced , and combining with the machining examples , based on Fanuc oi Mate CNC system format, the change of the programming method of tool length compensation value is expounded through the G10 instruc-tion in the program.

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本文针对现在的教材和文章仅对G73指令格式进行阐述,未对指令功能参数进行详细讲解,参数选取方法不明确的问题进行分析,解决参数选取不当造成的首次空切或过切的问题,对学习者起到正确的指导作用。
The current textbook only expounds the format of G73 command code and fails to explain the functional parameters of the command code, and the parameter selection method is not clear. Based on this, this article aims to solve the empty cutting or overcutting caused by improper selection of parameter. It is of guiding significance for learners.

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对于椭圆的数控加工尚无现成的指令可以调用,须用宏程序来实现。分析总结了各类椭圆数控加工宏程序,运用FANUC数控系统的宏程序G代码调用功能,开发了椭圆插补功能指令G100,通过预置一个椭圆加工通用宏程序并设定机床参数,使椭圆的数控加工象加工圆弧一样简单方便,大大简化了程序,有效地提高了加工效率。
No ready-made instructions can call for elliptic processing , it should be in macro programs to achieve .Analysed all kinds of macro programs of the elliptic processing ,used the function of G code calls macros of FANUC numerical control system , developed elliptic interpolation function G 100 instructions,through the preset a elliptic processing general macros and setting ma-chine parameters ,makes the elliptical processing become so easy as arc processing ,simplifies the programming greatly ,effectively improves the machining efficiency .

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介绍圆弧插补指令G02,G03在数控编程中的灵活应用,有效地提高了程序编制的效率及G02,G03选用的准确性,确保了工件的加工质量。
This paper introduces the flexible application of circular arc interpolation instruction G02, G03 in NC programming, which effectively improves the efficiency of programming and accuracy of choosing G02, G03 and ensures the machining quality of workpiece.

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