Archive for the ‘equipment’ Category

CNC machinery and tools

April 20, 2007

A CNC machine tool is a powered mechanical device used to fabricate metal components of machines by the selective removal of metal. The term machine tool is usually reserved for tools that used a power source other than human movement, but they can be powered by people if appropriately set up. Many historians of technology consider that the true machine tools were born when direct human involvement was removed from the shaping or stamping process of the different kinds of tools. For instance, they consider that lathe machine tools were invented around 1751 by Jacques de Vaucanson because he was the first to mount the cutting instrument on a mechanically adjustable head, taking it out of the hands of the operator.
Related equipment and machinery: CNC vertical machining center, cnc horizontal machining center, CNC turning center, CNC rotary table and indexers, Automation Production and manufacturing, Stewart platform, Drills, EDMs, Lathes, Milling machines, Wood routers , Sheet metal works Hot-wire foam cutters Plasma cuttings Water jet cutters Laser cutting Oxy-fuel CNC turning centers, vertical machining centers, horizontal machining centers, Multi-Tasking machines, 5-axis machines mill drill CNC VMC technology HMC rotary tables CAD CAM lathes, vertical horizontal machine tools, 5-axis, cnc magazine, computer numerical control, mold machine, toolroom mill FMS, gantry, pallet changer, trunnion, spindle, g-code, metalcutting, metalworking, milling machines, Collet lathes, machine tools, mill, milling center, indexer, rotary, machinery, automation. cnc router. wood cnc router. table top cnc router. plastic cnc router. low cost cnc router. cnc router video. cnc video. cnc router pics. cnc router images. video of cnc router. cnc router images. CAD CAM software. cnc plasma. cnc router control. cnc router table. cnc router cutting. cnc router in USA. small cnc router. cnc router machines. cnc router for milling. Guitar making cnc. artcam. cnc wax. cnc router for wax. cnc routers for jewelry. cnc routers for rings. cnc routers 4th axis. cnc routers servo. cnc routers steppers. cnc routers for aluminum. cnc routers for brass. cnc plasmas for metals. cnc plasmas with hypertherm. cabinet cnc routers mdf cnc routers computer numeric controlled computer milling computer aided designing computer aided machining machining was cnc numeric control linear motion Vector Art for cnc Relief Aat for cnc

Blogs Directory

Advertisements

CNC Plasma Cutting Machines

April 19, 2007

Plasma cutting machine

Plasma cutting is a process used to cut steel and other metals (or sometimes other materials) using a plasma torch. In this process, an inert gas (in some units, compressed air) is blown at high speed out of a nozzle; at the same time an electrical arc is formed through that gas from the nozzle to the surface being cut, turning some of that gas to plasma. This plasma is sufficiently hot to melt the metal and moving sufficiently fast to blow molten metal away from the cut. The result is very much like cutting butter with a hot jet of air. Plasma cutters have also been used in CNC machinery. Manufacturers such as Retro Systems and Plasma CAM build CNC cutting tables, some with the cutter built in to the table. The idea behind CNC tables is to allow a computer to control the torch head making clean sharp cuts. Modern CNC plasma equipment is capable of multi-axis cutting of thick material, allowing opportunities for complex welding seams on CNC welding equipment that is not possible otherwise. For thinner material cutting, plasma cutting is being progressively replaced by laser cutting, due mainly to the laser cutter’s superior hole-cutting abilities. A specialized use of CNC controlled Plasma Cutters has been in the HVAC industry. Software will process information on ductwork and create flat patterns to be cut on the cutting table by the plasma torch. This technology has enormously increased productivity within the industry since its introduction in the early 1980’s. A typical HVAC cutting machine is Plasma Automation’s Vicon Cutting Table Plasma cutters use a number of methods to start the pilot arc, depending on the environment the unit is to be used in and its age. Older cutters use a high voltage, high frequency circuit to start the arc. This method has a number of disadvantages, including risk of electrocution, difficulty of repair, sparkgap maintenance, and the large amount of radio frequency emissions. Plasma cutters working near sensitive electronics, such as CNC hardware or computers, use the contact start method. The nozzle and electrode are in contact. The nozzle is the cathode, and the electrode is the anode. When the plasma gas begins to flow, the nozzle is blown forward. A third, less common method is capacitive discharge into the primary circuit via a Silicon Controlled Rectifier. PC: plasma cutting machines also plasma systems cutting or plasma.