The line segment that avoids control to go up is approximate

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The machine tool with current Css" Type=text/css Rel=stylesheet> controls limit of the existence when means is being used at processing imperceptible form. That is to say, because be commonly,through be opposite Zuo of cutting tool course undertakes smallish break up, will edit NC program with line segment approximation, when raising treatment precision accordingly, data bulk can increase, make CAM processing expends a large number of time. And, numerical control device makes time also needs when unscrambling to NC program. Be in especially in exceeding imperceptible nicety to machine, NC program can break up amount to to measure more small line segment, put in a lot of problem in efficiency respect. Not only such, precision also is put in the problem, for instance, when wanting cut to give appearance of smooth free curved surface originally, the course Zuo of cutting tool often appears however delicate zigzag. Accordingly, sanded Dick (Sodick) development went not by NC program, the direct control system that dictates to shift of behavioral controller take-off directly however " DirectMotion " , deploy was in on the machining center such as AZ150 (graph 1) . DirectMotion can make of cutting tool add decelerate to become fluent, and still can reduce those who add decelerate to produce frequency. Graph the different DirectMotion of means of 1 ordinary control and DirectMotion is calculated directly through three-dimensional module axial action statement, not by NC program issues a statement namely. DirectMotion can be in control equipment inside buy CAM function, because this requires an input only,CAD data can undertake optimal cutting. Additional, directMotion still can move on the PC that buy has the system like control equipment inside, can use axial shift to dictate the movement to the machine tool undertakes imitate accordingly. That is to say, the case that can use MC to undertake cutting through emersion will master actual cutting time and feed speed. And still can show the feed rate that includes to add decelerate inside through color, according to needing to be opposite Zuo of course of cutting tool, cutting tool reachs cutting condition to undertake correction. DirectMotion control system is in cutting 0.

When the groove appearance of 5mm square, although raise feed rate to very tall 1080mm/ minute, on corner place, also make an appointment with 1µm to control only with the deviation between CAD data. And, feed speed is 360mm/ minute if, do not have dimension deviation almost (graph 2) . And the customary feed rate that although be indicated originally,controls a method is very high, but also can rise at most only commonly actually 300 ～ 400mm/ or so minutes. Graph 2 0.

Cutting of 5mm square groove adds decelerate mediumly to dominate the data that the DirectMotion that You Shadi overcomes obtains. Workpiece is equivalent to SK D11(HRC60) , cutting tool is CBN agglomeration body, the diameter is 100µm. Main shaft rotate speed is bell of 120 thousand rotation per minute, treatment deepness is 0.

2mm, handling time is every groove 2 minutes, groove is 100. Although be in 1080mm/ minute below high speed feed, as controallable also as the deviation between target cost inside 1µm limits. CNC Milling CNC Machining