In recent years, because be quantified the diversification of the product, less and of component complication with each passing day, the demand of the machine tool of high to can be being machined efficiently additional value and high accuracy component adds metallic cutting manufacturing industry increasingly. Graph the outline drawing of 1 machine tool (NT4200DCG) the treatment working procedure of complex part uses background of machine tool of research and development normally dispersive means and means of intensive of treatment working procedure these two kinds of mode. Treatment working procedure is dispersive means is to point to use much stage machine tool integratedly (lathe and machining center) , every the machine tool is finished onefold or a few working procedure. Machining means of working procedure intensive is to point to all treatment that will finish place of a work to need with a machine tool working procedure. The treatment of intensive type is reducing manufacturing cycle, inventory, equipment to cover an area of precision of area, contented treatment to ask to wait for a respect to occupy very large dominant position. For manufacturer of this machine tool the home already developed those who make a variety of norms to be able to come true muti_function the compound machine tool of treatment, these muti_function compound machine tools experiment in spaceflight aviation component, car appliance of equipment of industry of energy of product, oil, medical treatment equipment, pressworked to the treatment of equipment, mould and construction industry machinery gets applied extensively in the domain and obtain considerable economic benefits. Speak of compound treatment, normally understanding is Che Xi compound machine tool basically applies at milling of gear hobbing treatment, grinding treatment, cant, bore to wait for treatment working procedure. But a large number of market research confirm however, actually the user takes the basic function such as the turning of pair of complex parts and milling seriously more, implementation holds clip and shorten thereby treatment is periodic. That is to say, a few very special treatment technology are not is the property that broad client values most. So, dark essence machine raises the ability of turning ability milling of compound machine tool to be jumping-off place with utmost ground, developed the new generation with lathe and completely shirt-sleeve machining center compound treatment opportunity. Machine tool essentials pursues plan of structure of 4 lathe bed pursues the 1 compound machine tool that is new development (the exterior graph of NT4200DCG) , graph the 2 structural models that are its. Can seeing this machine tool is to have much axis (the machine tool that X, Y, Z, B, C) moves. Two turning main shaft, a tool carrier, milling tool main shaft deserves to have trade knife unit automatically. From the graph 3 can see, be had to come true and be the same as the process capability with type lathe and same machining center, turning respect chooses horizontal lathe bed, advocate how deputy turning main shaft and knife clip are on same plane decrease to be out of shape by lathe bed heat thereby the machining error that cause. The strong point of lathe bed distributings equably in two side, bring to bear on when cutting force so at lathe bed, its and the machine tool in the past (graph 3 different pictures) the stability with better than having look. The heat between main shaft and tool carrier is out of shape the displacement that cause is the main influencing factor of precision of treatment of turning component external diameter, internal diameter, the symmetry on structure of this machine tool makes lathe bed and tool carrier have very good thermal stability. Respect of milling of this machine tool uses the main shaft of horizontal machining center, airframe uses structure of the box in box and drive of double guide screw to be measured in order to reduce mobile material, raise athletic rate thereby and improve character of machine tool trends. Main shaft drift uses 8 horn structure (4) seeing a picture, of machine tool slideway decorate submit V form, can make sure this component has enough stiffness so. Tool main shaft is OK and corresponding the arbor form that Big Plus, HSK, KM, CAPTO differs 4 kinds this (graph 5) , give an user more freedom so spend the cutting tool that will choose to differ. Design personnel undertook be optimizinged integratedly designing to main shaft of the B axis of this machine tool, turning and journey, use Build-in-motor main shaft direct drive electric machinery (the technology of DD Motor) , make the treatment area of this kind of compound machine tool quite wide. If the graph is shown 6 times, the journey of Y axis can amount to 4200mm, this main feature makes this machine tool can process bigger limits form and do not need turning main shaft to undertake graduation dislocation. The main strong point of the machine tool 1. This compound treatment machine tool has the stroke with compare of machining center photograph, c axis need not rotate to be able to be the aperture of 250mm in order to machine interval namely. Reduce the whirligig of an axis so, can obtain very tall treatment precision. 2.
Main shaft is highest slewing speed 12000r/min, tool main shaft is highest slewing speed 100r/min, have the milling capacity of machining center. 3.
Tool exchange time uses high speed automatic tool changes knife structure, decrease be not handling time, its and the machine tool photograph in the past are compared, handling time reduces an in part. 4.
B axis uses direct drive electric machinery, rotate speed coming back is spent can achieve 100r/min. Can undertake is the graduation circumgyrate of the unit with 1 ° . It and general worm turbine drive design photograph comparing, the amount of its component has very old rate decrease, so dependability has very big rise. It also can undertake 0.
0001 ° spend the circumgyrate of the aleatoric angle of the unit. Because use technology of drive of direct electric machinery, won't produce transmission system lag. It can realize 5 axes linkage completely to machine complex part. 5.
Highest acceleration is the machine tool: X axis 0.
Axis of 8g, Y 0.
Axis of 4g, Z 0.
6g. Use structure of drive of centre of gravity, the vibration of the machine tool gets be inhibitioned effectively, blame cutting time shortens, productivity gets rising. 6.
Design of this machine tool has heat to be out of shape the smallest new hot symmetrical structure, and its are electronic-controlled ark, the heat source of controller of oily temperature of main shaft refrigeration and lathe bed execute segregation, reduce them to be affected to the heat of lathe bed. 7.
What compound treatment machine tool has is linear the amount with rotor is much, the amount of heat source increases as much, so the design implements cooling technical measure to drive guide screw from time to tome, electric machinery baseplate also has independent and cooling measure. 8.
This machine tool has the equipment that interference is forecasted and defends complex operating system in real time. Function of compound treatment machine tool is much, athletic orgnaization is complex also, operation mistake or the machine tool that program mistake can cause collide. Because had the machine tool of new development to equip,real opportunity instrument moves monitoring system, it prevents the happening of machine tool collision effectively. Head of air cylinder of engine of car of □ of treatment example introduction (graph 7) turbine of □ aircraft engine (graph 8) this case uses treatment of 5 axes linkage, material is the alloy club material of diametical 150mm long 150mm, 12000r/min of main shaft slewing speed. The tool is the ball head knife of radius 6mm. Lamina of □ aircraft engine (graph 9) graph this case uses the engine blade of 9 planes control of 4 axes linkage, the center of workpiece is propped up through two main shaft, be machined material is aluminium alloy, what using cutting tool is radius the ball head knife that is 6mm. Machining a condition is: 4000r/min of main shaft slewing speed, the slewing speed 100r/min of B axis. CNC Milling
CNC Machining