Submitted by staff member on Sat, 03/07/2015 - 10:26
The contour of a part - also known as a profile - is normally programmed for milling applications by establishing the depth in the Z axis first, then moving the cutting tool individually along the X axis, Y axis, or both axes simultaneously. For turning applications, either the X axis or the Z axis, or both axes can be used to face, turn or bore a contour. For both types of machining, each contour element contour requires one block of nutting motion.
Submitted by staff member on Sun, 02/15/2015 - 13:41
A CNC program is a series of instructions, assigned to different tools and operations. If such a program includes two or more repetitive instructions, its structure should be changed from a single long program to two or more separate programs. Each repetitive instruction is written only once and called when required. This is the main concept of subprograms. Figure below shows a typical part layout repeated at different locations.