Google翻译结果
CNC machine tool technology, the latest developments in
CNC machine tool is moving fast, efficient and high-precision direction, in order to enhance market competitiveness, the machine tool manufacturers in the design and manufacture of CNC machine tools used in a number of new technologies, such as linear motors, high-performance cooling systems, multi-processing system open CNC systems and networks, such as manufacturing systems. These advanced technologies are applied to the new CNC machine tools.
1 linear motor
Advanced linear motor drives have been widely used in CNC milling machines and CNC lathes. It is not only in the above f = 60m/min cutting feed rate conditions, high-speed machining of parts and rapid Chip, while improving machining accuracy. Linear servo motors have to speed up response time and improve accuracy of servo control and precision machining characteristics, which can be an excellent way to expand the processing capacity of CNC machine tools. The usual rotary - linear motion drive system, because of its inherent quality, inertia, lead, lag and vibration and other issues will affect the quality of parts machining. CNC machine tools in the linear motor is installed on the above problem does not exist. At present, Mazak, Mori Seiki, Okuma, and companies such as Cincinnati Machine will have a new type linear motor for CNC machine tools, machine tools so that the feed rate of f = 60m/min or more, rapid transfer speed of f = 120m/min, machine tool acceleration up to 2g. At present, the use of linear motors also exist, such as the carrying capacity of small, fever and so on, need to be improved in the future.
2 high efficiency cooling system
For high-speed CNC cutting machine, the shaft to the f = 60m/min feed rate for cutting the next, which will make use of ball screw of CNC machine tools produced in the processing of high temperature, severe impact on the dimensional accuracy of parts and machine tool positioning accuracy. By Hitachi Seiki developed ball screw cooler, through the hollow ball screw transmission to cool the coolant to the cooling screw size and stability of the purpose of processing. Makino cooler developed electronic control systems, ball screws can be monitored by the temperature rise generated by friction, so that ball screw to maintain the temperature within the permissible range. In addition to the cooling of the ball screw, and the high-speed rotation of the spindle to strictly control the temperature rise. Yamazen will pressure p = 6.89MPa of coolant through the spindle center hole of the machine spindle, tool and processing components for cooling. It not only can guarantee the workpiece, cutting tool from the effects of temperature rise, to improve tool life, but also to make cuttings from the smooth, clean up the processing environment. By rail in order to avoid the effects of temperature rise, Hitachi and bearing manufacturers to jointly develop a brand for the Eco-Eco grease the rails with a cooling, lubricating effect, and no harmful substances, can be self-lubricating and does not require special equipment and so on. Many manufacturers use to prove that it has a good effect and economic benefits.
百度翻译结果
The up-to-date CNC machine tool technology development CNC machine tool develops , is to strengthen marketplace competition to high speed , high-effect and the high-accuracy direction , the machine tool manufacturer has adopt a lot of new technique in every country in CNC machine tool design fabrication, for example straight line electric motor , high-effect cooling system , multifunctional treating system , open type CNC system and network fabrication system etc.These advanced technologies all apply to the new CNC machine tool product at present. The advanced straight line of 1 straight line electric motor electric motor drive is used for CNC milling machine and CNC lathe already broadly. It can move downwards in f = 60 the above m/min feed speed cutting condition not only , carry out quick-cutting on the part and arrange crumbs rapidly, can improve part treating accuracy at the same time. The electric motor has a straight line being able to accelerate servo speed of response, the characteristic improving servo control accuracy and machine tool treating accuracy , the working ability being able to expand the CNC machine tool extremely good as a result. General gyration linear motion drive system, because of whose inherent mass , inertia , advance , problem such as lagging and vibrating, treating mass that can affect a part. But, assembling the straight line electric motor on CNC machine tool is not to have the above problem. At present, Mazak , dark essence machine , companies such as big coves and Cincinnati Machine all already use straight line electric motor for new model CNC machine tool , make the machine tool feed speed reach f = above 60 m/min, the fleetness moves speed reaching f = 120 m/min, machine tool acceleration amounts to 2 gs. At present, be having if load support capability is small , generate heat to wait problem on straight line electric motor sigmatism , be needing giving an improvement on the days to come. 2 high-effect cooling system CNC machine tools to the quick-cutting being in progress, every axis is going to carry out cutting under f = 60 m/min feed speed , this only is capable to do a messenger adopt ball the screw CNC machine tool comes into being in treating high temperature, affect the part dimension accuracy and machine tool allocation accuracy gravely. Ball that the company develops from Hitachi essence machine the screw chiller, comes to cool down by the fact that the ball in the medium altitude transfers cooling liquid in screw , achieves the screw cooling down and stable finish size purpose. Development Makino company electron chiller navar, may monitor ball rising because screw rubbing the temperature waiting to come into being , the screw temperature keeps messenger ball within the allowed band. Except that screw carries out a cooling on ball, the temperature to the vertiginate chief axis rises also needing to subjugate. The Yamazen company cools down pressure for p = 6.89 MPa cooling liquid by the fact that the chief axis centre hole is in progress to the machine tool chief axis , cutter and treating part. It not only can ensure that workpiece , the cutter accept the effect that the temperature rises , improve cutter life time , can use smooth snapout of cuttings , the environment purifying treating. Accept the effect that the temperature rises for avoiding slide way, the company of Hitachi unites with axle bearing manufacturer for Eco-Eco slide way grease developing out a shop sign, merit such as having cool down , lubricating effect well , there being no hazardous wastes , being able to carry out automation lubrication and not need a rig. A lot of manufacturer uses a certificate , it has the fine effect and economic effect.
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