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分类: 网络与安全
2012-12-17 15:11:52
Fortunately, for you, the home craftsman, those days are gone. It is now entirely possible, practical, and affordable to own your own CNC router, CNC mill, CNC lathe, CNC laser cutter, or CNC plasma cutter. With only the most basic PC computer, a couple of hundred dollars worth of software, a similar investment in hardware and electronics, and your own ingenuity, YOU can have a CNC machine in your home workshop. "But you've allowed other defendants to be represented by an ostrich and an aardvark." "Because they attended Harvard Law School." "All right, I'll take the aardvark." "Why not the ostrich." She smiled. She was pretty sure the ostrich had been eating her irises, but she didn't want to say so. When people discover that I am an economist, they rarely ask me for laser engraver my views on subjects that economists know a bit about ¨C such as how to respond to climate change or pay less at a supermarket. Instead they ask me what will happen to the economy. Why it is that people won't take ¡°I don't really know¡± for an answer? People often chuckle about the forecasting skills of laser cutting machine economists, but after the sniggers die down, they keep demanding more forecasts. Is there any reason to believe that economists can deliver? One answer laser cutting can be gleaned from previous forecasts.
Back in 1995, the economist and FT columnist John Kay examined the record of 34 British forecasters from 1987 to 1994, and he concluded that they were birds of a feather. They tended to make similar forecasts, and then the economy disobligingly did something else, with cnc woodworking router economic growth usually falling outside the range of all 34 forecasters. Your reason is clouded by awe. You are watching instead with the breathless alertness of a child, watching and listening, and there is nothing to hear except the cadence of dripping water. man on the platform high above turns the hand-valve and tightens his grip on the lever. A new sound begins, pure and profound, a sigh of release. Known as the Promenade Samuel-De Champlain, the revitalized landscape is split into three sections, one of which includes four theme gardens. In one of these gardens, Tremca Group, the prefabricated concrete manufacturer involved with the project, placed four 12- by 15-foot concrete walls, says Stephan Martineau, technical sales representative for Tremca. The configurations of the machine are defined based on the way the laser beam will hit the object to be cut. There are three main configurations that act on two axes, the X and the Y. The first configuration is referred to as moving material. In this setup, the material to be cut is put beneath the cutter head.
The second configuration is the hybrid laser. The table and the cutter head operate in opposing directions, giving the best stability of the beam's path. The third configuration is the flying optic configuration, employed by Maloya, where the cutting head is the piece of the machine that is moving. The object being cut is static and this type of setup creates neat work. Its rate of motion is also the fastest among the three setups. The flying optic system also does not require clamping down the material being cut, aiding in the speed of the workflow. There are also machines utilizing up to six axes.
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