Rate of feed of program of use numerical control optimizes software, those who get is handling time not just shorten. Most die manufacturer can think, shorten CNC Machining time, it is to raise efficiency and one of optimal ways that increase gain capacity. Feed rate needs to optimize likewise, it is easier that this understanding rises. But if be in,the circumstance that does not have relevant cutting information falls, want to realize this kind to optimize special difficulty. CAM system decides without specific means the material purify of every time is measured. For this, process designing personnel must assume this one job, visible to be being undertaken by the material of purify, in order to obtain the information in flow. Normally the circumstance falls, rate of affirmatory first-rate feed is the difficult problem that personnel of numerical control process designing and machinist must face. The worst cutting requirement that the feed rate that they choose represented cycle of cutting tool life, treatment and likelihood to appear 3 person between eclectic. This feed leads may final meeting to become need purify the ideal feed rate of some kind of workpiece with a lot of material or cutting worst condition. However, rate of this kind of feed also may waste time, make in other and certain circumstance cutting condition becomes even very flooey. Feed rate is machining the hand in the process to move adjust. Seasoned machinist can hear the little movement of cutting tool excess load exquisitely, use change feed rate in machine tool begin next. Machine tool operator is replaced exclusively adjust pattern, it is according to needing to reduce feed is led normally. System of most numerical control allows in the condition when, the function that raises feed rate is very finite also. As the progress of material of cutting tool, cutting tool and CAM software, use correct feed rate to undertake every time cutting becomes more and more important. However, the treatment strategy that a lot of CAM system place use and cutting mode, to common treatment efficiency is not tall, aperture of open mode chamfer is outline treatment, for instance complex appearance rough machining, complex sunken antrum or planar rough machining. Some software package can detect and the material of treatment excessive, raw area and surface blend a division, but to function of this one automation, efficiency normally not tall. Accordingly, many time is being cut for nothing by waste or in whole workpiece surface on adagio feed. In addition, the likelihood also meets this cutting tool move with the method of incorrect or small effect. The feed rate of small effect can spin treatment cycle, destroy workpiece surface, those who increase cutting tool wear away and attaint tool. The function is powerful and the intuitionistic software that produces a tool to be able to help programmer optimize cutting tool method automatically is indispensable. This kind of software can read access to control program file (G code program or output directly by CAM system) , break up cutting tool motion automatically into a certain number of paragraphs small (decide through the setting that in software the user defines) . Next, this software assigns the material purify quantity according to each paragraphs optimal feed rate. Finally, output an as same as program of original numerical control new program, improved feed rate only, and won't change contrail of cutting tool method. On one hand, it is automatic that rate of feed of numerical control program optimizes software, be in namely before program of numerical control of machine tool to load, already decided optimal feed is led. On the other hand, it used the professional knowledge of personnel of numerical control process designing and machinist, decide for specific cutting requirement optimal feed is led. The user inputs good feed rate for the treatment condition of a few predefine. Capacities of all sorts of machine tool of element such as (type of horsepower, main shaft, rapid floating rate, cooling fluid) , type of the tigidity of fixed device and clamping apparatus, cutting tool (number of material, tine, length) , can affect cutting process. Newer fine tuning besides afore-mentioned elements, other settings, if accumulate purify the most roughly,angle of width of deepness of rate, initiative feed rate, cutting, cutting, cutting and cutting tool wear away etc, also can use the optimal feed rate that determines each paragraphs of cutting. The newer likelihood of software includes to repeat adjust, the process such as test and fine tuning, but need not repeat run this imitate (graph 1) . Moving imitate hind, all cutting information can store rise. Graph 1 repeat adjust, of test and program of fine tuning numerical control optimize a setting, need not run imitate to connect general reason condition to fall afresh, of different type optimize a technology to agree with the different level in machining a process. When planar rough machining, material with a constant deepness cutting, but the width change of cut is very big. Lead to achieve the optimal feed that here cutting condition issues, optimize deepness of cutting of Lv of software take an examination and cutting width. Use the information that provides in process of test and verify, this software with respect to what can decide cutting tool way purify measures every material that goes up small paragraphs. Next, personnel of process designing of use numerical control or the information that machine tool operator provides, appoint optimal feed to lead (graph 2) . Graph material purify measures 2 basises to optimize feed rate automatically, treatment cycle can shorten significantly in semifinishing machining phase, the typical feature of cutting is: Arrive from initial outline rough machining in the whole process of final take shape, big range ground changes the load of cutting tool. To realize flowing semifinishing machining, want to undertake optimizing to feed rate, in order to carry constant bulk purify rate. The angle of the data capacity that optimizes Lv of software unified exam and cutting tool contact and outline cut. Besides the rate of purify of the largest volume that assigns by the user, osculatory area and angle also are used to the corresponding feed rate that determines each paragraphs of cutting. Accordingly, feed rate changes continuously in cutting process, in order to carry constant bulk purify rate, get the semifinishing machining face of high quality. On today's high speed machining center, with extremely tall feed rate and main shaft rotate speed undertake cutting is very common be spendinged gently. Below this kind of circumstance, the means of material of every tooth contact is crucial. Too low feed rate can produce asp, vibration and workpiece sclerosis, bring about exterior surface roughness difference and cutting tool discard as useless prematurely. Exorbitant feed rate can cause exorbitant cutting load to appear insecure element, cause the disastrous trouble of cutting tool, main shaft, clamping apparatus and machine tool. Undertake optimizing to feed rate, maintain the constant ply that cut bits through ensuring all cutting are machined, can solve these problems. This kind of technology applies to high speed finish machining especially. The occurrence of CAM software, finished the job of the difficult problem that solves almost impossibly before 10 years and take time. The innovation of these software changed the way of CNC Machining, saved time, cost and resource at the same time, annual technical progress is in make optimize software to become a function increasingly powerful, intuitionistic manufacturing tool. CNC Milling