Improve productivity, more flexible change and reduce manufacturing cost, these elements have extremely tall allure to machining center and the user of milling machine of dragon door type. German machine tool made manufacturer Axa company pose these challenges to oneself. Shorten as far as possible nonproductive additional time, raise the utilization rate of the automation degree of the machine tool and machine tool, to the engineer of research and development of Axa company, the high dynamic performance of this and machine tool and precision are same, also be the fixed target that continues to develop machining center and milling machine of dragon door type. 2002 the beginning of the year, company formulate concern the device that change a knife and raising machine tool tigidity while, reach the new plan of higher dynamic performance, develop from this gave VSC and VHC-M 2 model and 3 model the machine tool of series of new generation S such as machining center, this machine tool (M) deserve what to move together in X direction trade knife unit. Machining center of vertical of series of graph 1 VSC 3/50 XTS is mixed of library of circumgyrate head, fixed knife contain have sex automatically catch provided XTS to trade knife unit, the device that change a knife is in charge of cutting tool between knife library and main shaft carry increase knife library size 2004 the end of the year, develop machining center of the first batch of VHC-3-XTS to raising the demand of knife library capacity to bring about. This series machining center is rolled out on the AXA exhibition that the portion did oneself in this company in March 2005, XTS machine tool welcomes by the market. Accordingly, this series product continues to expand again now, make XTS changes knife device to also can be used at VSC and VHC series machine tool consequently, and norms has two kinds of type: Y axis runs method to be 600 Mm; Structural dimension also has 50 model, y axis runs method to be under 900 Mm, and also apply to SK50 main shaft, basically use at heavy cut treatment. The newest NSC series machining center that studies achievement was to deploy perpendicular moving workbench and take new-style XTS (XTS = Extended Tool Shop) the head of VHC series circumgyrate of the device that change a knife machining center. Change with the cutting tool of the S series machine tool that develops 3 years ago systematic photograph is similar, XTS knife library also is on bad terms moving workbench moves together. S series machine tool contains have sex catch provided whole knife library, knife library contains actuating device of intelligent pilot provide for oneself, follow workbench moves together; With S series machine tool contrary, XTS changes the knife library of knife device is fixed installation. Of actuating device of provide for oneself have sex catch a responsible cutting tool between cutting tool library and main shaft carry. Secure cutting tool library to be comprised by the individual chain that installs in couples up and down, because axis of chain edge X is collateral,arrange, the number of cutting tool position is OK and consequently arbitrary augment. Of high dynamic performance change a knife to catch by each the double cross with adjustable height is received catch form, in acceleration very high case falls, catch a traversal speed that can reach 100 M/min on X axis direction. Graph machining center moving method is in type of door of 2 VPC 55 dragon 2300 Mm, 1400 Mm and 800 Mm can be amounted to most on X axis, Y axis and Z axis, main shaft is the largest revolution resembles S series machine tool for 9000r/ Min same, between the hind machine tool that the set of the outfit that change a knife of XTS series protects at getting at the back of X axis shield in. As a result of whole change the process also has at the back of X axis shield, consequently won't as a result of workshop in change a knife to catch provide and produce collision phenomenon. Use this kind of plan to have following a few advantages: (1) changes knife device and cutting tool to need not follow workbench to move together again. Can improve the dynamic performance of axial drive so. For instance workbench is below the case with very high acceleration is OK also the fast route that uses 40 M/min has campaign. (The component of 2) workbench got improve and rising in rigid respect. (Because 3) is tall of dynamic function change a knife to catch got optimizing on weight, changed knife time to also get shortening accordingly consequently. (4) secures the knife library of installation to be able to accomplish the collateral installation of cutting tool, reduce nonproductive auxiliary time from this. (5) because of cutting tool change to be put at the back of X axis shield to undertake entirely, prevented the collision that the interference factor that has because of changing a knife to catch in workshop causes. (Chain of 6) knife warehouse becomes fluctuation double arrange, can narrowing as far as possible cover an area of the size that cutting tool library increases below area circumstance. As a result of this kind of double chain collateral arrange, the capacity of cutting tool library can expand arbitrarily. As a result of the structure reliable, dynamic performance is good and simple, function is rigid get ameliorative again, this kind of plan agrees with to be used extensively when the average machine spare parts of the small lot in treatment. Making corresponding configuration case to the machine tool, use a circle for instance workbench, fast rotate workbench and circumgyrate job head, also can complete the treatment of the intricate work such as face and 5 5 axes treatment and car treatment. Changing often below workpiece circumstance, XTS changes knife device to be able to withhold a large number of cutting tool on the machine tool. Union uses tray to change implement, can realize unmanned production. This grandfather department returned development to give dragon door form machining center series. The dragon door formula that uses circumgyrate job head and workbench of VPC-U series circle for instance machining center, raised VPC 45 U and series of VPC 55 U, and VPC series is perpendicular machining center raised dragon door pattern VPC 45 and VPC 55 series (graph 2 with the graph 3) . Type of door of the compact construction that VPC series includes the place on slideway dragon machining center. Regard Gantry as the machine tool, mix of 2 drive on the Y axis of this kind of machine tool survey a system. Place height the machine tool workbench that low, edge handles installation, make working space large special be helpful for operating. The device that change a knife got very good protection changes knife device to be in of the machine tool hind got very good protection. Compact model unifinication structure means can be in cover an area of the tigidity that the machine tool raises while the area is dinky. The marked characteristic of this kind of machine tool is to ran method to lengthen, workshop expanded, function rose, equipment is more comprehensive also. For instance the moving method of machine tool of vertical of series of VPC 45/55 U is mixed in X axis, Y axis 2300mm, 1400mm and 900mm can be amounted to most on Z axis. Graph type of door of the 3 VPC 55-U that use head of circumgyrate main shaft and circular workbench dragon machining center is opposite according to cutting tool and die manufacturer the demand that increases workpiece weight, company made response is, use the base that strengthens tigidity and new development larger circular workbench RTA6. The planar diameter of workbench is 1500 Mm, bear amounts to 3500kg. Besides existing circumgyrate working head uses Hirth gear interlocking device and stepless clamping apparatus besides, head of type circumgyrate main shaft is inserted inside the new-style stepless that accessory complemented to be used at 5 axes to machine again now. Because used new-style actuating device, cutting power also got rising, ED of SK40 main shaft is 40% when power amounts to 40 KW, torque is 255 Nm; ED of SK50 main shaft is 40% when power amounts to 57 KW, torque is 357 Nm. Space of work of this series machine tool is large, tigidity is tall, agree with especially treatment cutting tool and mould, also agree with spare parts of type of treatment big template. To mould of 5 axes treatment, also can use now head of type circumgyrate job is inserted inside stepless. Larger Z body runs method and bigger circular workbench to be able to have 5 treatment to large and stereo workpiece. CNC MillingCNC Machining