【正文】 C NC drilling file bed. 2. system for the automatic tool change Figure shows the knife and the whole machine tool CNC machine tools for the appearance of Fig. Figure shows the knife and splittype machine to the appearance of CNC machine tool plans. At this point, knife storage capacity, a heavier tool can, and often additional transport unit to plete the knife between the spindle and cutting tool transport. Daidao the knife from the ATC, the election knives, automatic loading and unloading machine tool and tool exchange institutions (manipulator), posed of four parts, used widely. Tool Automatic Tool Change When CNC tool code and the code in line with directives of the tool selected, the rotary cutter knives will be sent to the ATC position, waiting to grab manipulator. Random knife election is the advantage of the cutter knife in the order has nothing to do with the processing sequence, the same tool can be used repeatedly. Therefore, the relatively small number of knives, knife the corresponding smaller. Random elections knife on the tool must be coded to identify. There are three main coding. 1. Tool coding. Adopt special knife handle structure coding, the drawbars on the knife handle backend packages such as spacing of the coding part of the locknut fixed. Coding diameter ring diameter of a size two, respectively, said that binary 1 and 0 to the two rings are different, can be a series of code. For example, there are six small diameter of the ring can be made to distinguish between 63 (261 = 63) of the coding tool. All of 0 normally not allowed to use the the manipulator system, the whole process more plicated ATC. We must first used in the processing of all installed in the standard tool on the knife handle in the machine outside the presize, according to a certain way Add to the knife. ATC, selected first in the knife knife, and then from ATC, from the knife from the knife or spindle, exchange, the new knife into the spindle, the old knife back into the knife. ATC, as thenly a spindle, spindle ponents to high stiffness to meet the machining requirements. The number of establishments in larger knife, which can meet the more plex parts of the machining processes, significantly improving productivity. Daidao system for the automatic tool change applied to drilling centres and CNC machining centers. The parison drawn Daidao automatic tool change system is the most promising. Conclusion Focused on in today39。 Rotary ATC devices can be used horizontal machine, can also be used for vertical machining centers. 2. 2 ATC headturret installed With rotating CNC machine tool often used such ATC devices, with a few turret head spindle, each with a spindle on both knives, the first tower interim process can be automatic tool changerealization. The advantage is simple structure, tool change time is short, only about 2 s. However, due to spatial constraints, the number of spindle can not be too much, usually only apply to processes less, not to high precision machine tools, such as the NC drill, such as CNC milling machine. In recent years there has been a mechanical hand and the turret head with a knife for the automatic tool change ATC devices, as shown in Figure . It is in fact a turret head ATC, and the knifeATC device bination. The principle is as follows: when using the tool spindle 4 processing tool, the manipulator 2 will be the next step to the need for the tool does not work on the tool spindle 3 until after the pletion of this process , the first rotary turret 180 186。傳統的人工記帳管理方式 , 效率低下 , 錯誤率高 , 且信息數據不能共享 , 刀具的使用狀態(tài)和壽命周期無法跟蹤 , 不能適應當前信息化管理需要。支架 由立柱、橫梁、上下導向環(huán)軌、支撐地軌組成。其中 13 列為插座式刀架 , 1 列為抽屜式刀架 , 每個刀架背部通過銷軸與上、下輸送鏈鏈板聯接 , 底部安裝滾輪 , 鏈條轉動帶動刀架沿地軌轉動。 1)電氣傳動 水平旋轉刀具儲存系統各機械的動作都屬于反復短時工作制。 結構簡單 、 緊湊 ,應用較多 ,但刀具單環(huán)排列 ,空間利用率低 。由于刀庫位置固定，換刀動作由主軸完成，無需機械手。 (2)任意選擇目前大多數的數控系統都采用任意選刀的方式，其分為刀套編碼、刀具編碼和記憶式等三種。 ,特點和適用范圍 自動回轉刀架是數控機床上使用的一種簡單的自動換刀裝置，有四方刀架和六角刀架等多種形式，回轉刀架上分別安裝有四把、六把或更多的刀具，并按數控指令進行換刀。與此同時，刀具庫運動到適當位置，換刀裝置回轉并同時與主軸、刀具庫 的刀具相配合 。主要缺點是刀具必須存放在與主軸平行的平面內，與側置后置刀具庫相比，切屑及切削液易進入刀夾，因此必須對刀具另加防護。但由于受空間位置的限制，主軸數目不能太多，通常只適用于工序較少、精度要就不高的機床，如數控鉆 床、數控銑