Syntax, canned cycles, coordinate systems, tool compensations, and safe programming protocols.
Heidenhain PLANE SPATIAL and Cycle 19 define a dynamic tilted coordinate system (3+2 axis machining), allowing programmers to execute 2D/3D toolpaths on angled part faces with automatic kinematics transformation.
CYCLE800 is the standard swivel cycle in Siemens Sinumerik controllers, transforming the active workpiece coordinate system to any spatial plane for 3+2 multi-sided milling and drilling.
G00 commands non-cutting rapid positioning at the machine maximum traverse rate, while G01 commands controlled linear interpolation at a specified feed rate (F) for cutting.
G41 (cutter left) and G42 (cutter right) shift the toolpath automatically by the radius stored in the tool geometry register (D-offset), allowing programmed part contours to remain independent of cutter size.
G71 is a 2-line canned cycle for CNC turning that automatically generates multi-pass longitudinal roughing toolpaths from a simple profile definition, drastically reducing program length.
G96 maintains a Constant Surface Speed (CSS in m/min or SFM) by dynamically accelerating spindle RPM as the tool turns smaller part diameters, maximizing tool life and finish uniformity.
G02 (clockwise) and G03 (counter-clockwise) are modal CNC G-codes that command cutting tools to follow circular and helical arcs along defined coordinate planes.
G43 activates positive tool length offset compensation, instructing the CNC controller to offset the Z-axis position based on the physical length of the active tool stored in the tool table.
G83 is a canned cycle for deep-hole drilling that repeatedly feeds into the material by an incremental peck depth (Q) and retracts completely to the initial plane (R) to evacuate chips and deliver coolant.
