自动换刀外文资料翻译.docx

Automatically change tool device (ATC) and form Nc machine tools in order to further improve productivity, further compression not cutting time, modern machine gradually developed in a machine to finish in a pack processes or all process of processing. Nc machine tools in order to succeed in a clamping workpiece finish mul t iple work step, to cut auxiliary time and reduce the error due to multiple installation workpiece, usually with automatically change knife system. More on workpiece set process but the storage and replace Tool device is called automatically change Tool device (Automatic Tool Changer, ATC) ; Automatic Tool automatically Change dao (ATC) system as by stronger control system and Change knife device component. On the basis of CNC milling machine, if match again with knives and automatic tool changer, constitutes processing center (Machining center abbreviation MC)• In this kind of CNC machine, automatic cutter replacement device (ATC) is indispensable. Such as processing center machine and say more processes automatically change knife nc machine tools, it is mainly refers to have automatically change knife and automatical 1 y change the workpiece machining position of nc machine tools, can work with automatic cutter replacement device is typical of machining center machine, and thenecessary conditions of process. Automatically change device to the function of machine, processing efficiency greatly. Because ord in ary nc vertical mil ling machi ne is the medium and small parts of the general, its most needs a few knife processing (10), and, within the tool is increase automatically change tool device and while automatically transform spin die speed. Can reduce lcibor in tensity, reduce cutter replacement time machine, it raised the automation degree, and also to improve the labor productivity.Therefore, nc vertical milling machine as the largest number of CNC milling machine, application scope and most extensive a, on the added can quickly and accurately change the sword automatical 1y change tool device is very necessary.All kinds of numerically-controlled machine too1’s automatically change the structure of machine tool device depends on the type, machining scope and cutlery type and quantity, etc. This device can be divided into the following several main form:1) rotary cutter cutter replacement formNc lathe use rotary cutter is a simple automatically change tool device. According to the different processing object, can be designed to sifang and hex cutter or other various forms. Rotary cutter separately on the four, six or installed by the tool, and more nc device instructions transposition change knife. Rotdry cutter on the structure must have good strength and rigidity, and reasonable positioning structure, to ensure that the rotary cutter in every inversion is the highest possible after repositioning precision. Such as: CK7815 numerical controlled lathe adopts BA200L cut ter, its working cycle is: the throats of nc device receives a loosen a turned to command the position of instruction requirement a c1amping gave the inversion exit signal•2) change main shaft head cutter replacement formWith rotary tool in the nc machine tools, replace main shaft head for the knife is a simple change dao style. Main shaft head tong have horizontal wind vertical two kinds, and common turret of inversion to replace main shaft head to realize automatic changing swords. Each spindle head with each process in advance of rotary tool needed to change cutters, when receive ins true tion, the main shaft head and, in turn, turn to processing position and connected to the main movernent driven corresponding rotation, and tool spindle is not in other position of spindie are processed with the main sports withdraw.Turret spindle head way of changing tools saves the main adva nt age is automei tic loose clip, uni oad ing dcio fittings knife, clamping and tool handling a series of complicated to operate, thereby significantly reducing the cutter replacement time, improve the reliability of the cutter replacement, but due to st rue tu ral causes and space position of spindle component of the restrictions, the number of poor and spindle rigidity may not many. Therefore turret spindie head change knife usually only applies to process less, precision less demanding nc machine tools, such as CNC milling machine-3) take knife library automatically change knife formKnife 1 ibrary automatical 1 y change by knife knife forms are device component library and tool exchange. At present this change in the nc machine knife met hod of the most widely used. Knife library of nc tool device automatically change spindle box and turret spin die head, because in the heads tock compared only a spindle, so the spindle component has eno ugh so that they can meet various stiffness of the precision machining requirements. In addition, the knife library can deposit quantity of knives, can undertake more complex components。