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Author Topic: CNC Machining  (Read 420 times)
jvpl
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« Reply #15 on: July 16, 2010, 12:55:46 PM »

The most modern CAD/CAM systems that generate CNC tool paths for these parts still employ the traditional method of assign a fixed and low machining feed rate for a number of cutter paths, based on the worst case cut geometry. This can result in significant tolerance deviation, variation in cutting loads, and more cutting time.
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singam
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« Reply #16 on: July 27, 2010, 09:52:06 AM »

A milling machine (also see synonyms below) is a machine tool used to machine solid materials. Milling machines are often classed in two basic forms, horizontal and vertical, which refers to the orientation of the main spindle. Both types range in size from small, bench-mounted devices to room-sized machines. Unlike a drill press, which holds the workpiece stationary as the drill moves axially to penetrate the material, milling machines also move the workpiece radially against the rotating milling cutter, which cuts on its sides as well as its tip. Workpiece and cutter movement are precisely controlled to less than 0.001 in (0.025 mm), usually by means of precision ground slides and leadscrews or analogous technology. Milling machines may be manually operated, mechanically automated, or digitally automated via computer numerical control (CNC).
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kanmani
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« Reply #17 on: August 14, 2010, 06:40:24 AM »

Computer numerical control (CNC) is a computer "controller" that reads G-code and M-code commands and drives a machine tool, a powered mechanical device typically used to fabricate components by the selective removal of material. CNC does numerically directed interpolation of a cutting tool in the work envelope of a machine. The operating parameters of the CNC can be altered via the Master Control Unit (MCU) of the machine.
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