Machining, part processing filing

The tool path generation step is thus the second step in the design-to-part process flow. The input for this step is a CAD file, while the output of this step in the process flow is the machine-independent tool path data (called CLDATA-file or Cutter Location DATA-file). 

Similar to other rapid prototyping techniques, ACR s EFF process begins with a 3D drawing (AutoCAD,. DXF, etc...) of the component to be fabricated. The file is imported into ACR proprietary software and sliced into the individual layers and fill patterns which will be utilized to build the part. The fill pattern in each successive layer ultimately becomes an extrusion path for the EFF machine to follow while extruding the chosen material in the shape of the component being fabricated. 

The advantages of LOM lie in no chemical changes and minimal heating, so shrinkage and stress-induced deformation is very small. The process runs at room temperature so a developing time is not required. The laser only has to cut file part contour and hatching, not all the internal area. Moreover, no support structures are needed for overhangs. The system is inexpensive to maintain, no toxic materials are used, and these machines are well suited to desktop operation. But the surface is... 

Separate compilation is the ability to develop a program in several independent pieces. Each piece is stored in its own file in the computer, and each can be edited and worked on separately. Each source file is independently translated (compiled) into a machine language file, which is called an object file. After the individual parts have been written and compiled, they are combined to form a complete program in a process called linking. 

Machines, processes, people, and whole situations are stored in the brain and can be recalled at will, like files from the hard disc of a computer. This cuts down enormously on the amount of information about any scene which an individual needs to take in in order to perceive and understand it. But where the real world differs from the expectation, problems occur. This is roost often the case with situations which go against population stereotypes, for example a machine on which moving a lever downwards turns it off. Other population stereotypes are red for danger and stop, clockwise turns the volume up or shuts the valve. These examples are very widely shared, but in other cases stereotypes for one population may contradict those held by others, e.g. you turn the light on by putting the switch down in Britain but by pushing it up in the USA and parts of Europe. 

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